CN112357636B - High-synchronization material pressing system and method of automatic sheet stacking turnover machine - Google Patents
High-synchronization material pressing system and method of automatic sheet stacking turnover machine Download PDFInfo
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- CN112357636B CN112357636B CN202011045173.7A CN202011045173A CN112357636B CN 112357636 B CN112357636 B CN 112357636B CN 202011045173 A CN202011045173 A CN 202011045173A CN 112357636 B CN112357636 B CN 112357636B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H15/00—Overturning articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a high-synchronization material pressing system and a method of an automatic turnover machine for sheet stacking materials, wherein the synchronization material pressing system comprises a material pressing plate, a plurality of oil cylinders and a hydraulic system; in the hydraulic system, an electro-hydraulic proportional valve for controlling the working speed of the oil cylinder is arranged on a hydraulic pipeline of each oil cylinder; the device also comprises a speed detection module and a control module; the signal input end of the control module is connected with each speed detection module, and the signal output end of the control module is connected with each electro-hydraulic proportional valve; the control module is used for controlling the electro-hydraulic proportional valve to adjust the flow according to the movement speeds of the piston rods of the oil cylinders detected by the speed detection module, so that the movement speeds of the piston rods of the oil cylinders are consistent. The invention can accurately control the synchronous movement of the piston rods of the oil cylinders, improve the pressing effect of the material pressing plate on the sheet stack material, prevent the sheet stack material from loosening or being extruded and deformed in the overturning process, and simultaneously avoid the blocking phenomenon of the oil cylinders due to unbalanced stress.
Description
Technical Field
The invention relates to a material overturning device and method, in particular to a high-synchronization material pressing system and method of an automatic sheet stacking overturning machine.
Background
In automotive production, vehicle doors are stamped and formed from thin sheets. The incoming sheet is in a stack form prior to stamping. Because the left and right doors are symmetrical to each other, one half of the sheet stack needs to be turned 180 ° prior to stamping. For example, the utility model patent of the utility model publication of the grant bulletin number CN201089661Y discloses an automatic upset machine of sheet metal buttress material, this upset machine mainly comprises roll-over table, bottom plate, upper plate and hydro-cylinder, and wherein, the roll-over table can carry out 180 upsets, is driven by actuating mechanism, and bottom plate, upper plate and hydro-cylinder all set up on the roll-over table, and bottom plate and upper plate set up relatively, and the hydro-cylinder sets up on the upper plate, and the hydro-cylinder is a plurality of, and the equal fixed connection of the piston rod of a plurality of hydro-cylinders is on pressing the flitch. During operation, the sheet stacking material to be turned is conveyed to the bottom plate, then the oil cylinder drives the material pressing plate to move downwards and tightly press the sheet stacking material, and then the turning table turns 180 degrees, so that the sheet stacking material is turned.
In the automatic upset machine of current sheet metal buttress material, because the pressure flitch is driven by a plurality of hydro-cylinders jointly, consequently, need the piston rod synchronous motion of a plurality of hydro-cylinders, the automatic upset machine of current sheet metal buttress material is through controlling the mode that a plurality of hydro-cylinders carry out work simultaneously or stop simultaneously and control the synchronism between them, but this kind of mode is difficult to the piston rod synchronous motion of a plurality of hydro-cylinders of accurate control, the piston rod of different hydro-cylinders often the velocity of motion is not completely unanimous, on the one hand, lead to the pressure flitch to be dragged and warp, the pressure flitch is poor to the effect of compressing tightly of sheet metal buttress material, pressure distribution is inhomogeneous, the condition that sheet metal buttress material pine takes off or is extruded deformation appears easily, on the other hand, the hydro-cylinder card phenomenon appears because of the unbalanced stress in a plurality of hydro-cylinder velocity of motion.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-synchronization material pressing system of an automatic turnover machine for sheet stacking materials.
The invention also aims to provide a synchronous material pressing control method of the automatic sheet stack overturning machine.
The purpose of the invention is realized by the following technical scheme:
a high-synchronization material pressing system of an automatic sheet stacking and overturning machine comprises a material pressing plate, a plurality of oil cylinders for driving the material pressing plate and a hydraulic system for controlling the oil cylinders to work, and is characterized in that an electro-hydraulic proportional valve for controlling the working speed of the oil cylinders is arranged on a hydraulic pipeline of each oil cylinder in the hydraulic system; the device also comprises a speed detection module and a control module, wherein the speed detection module is used for detecting the movement speed of the piston rod of each oil cylinder; the signal input end of the control module is connected with each speed detection module, and the signal output end of the control module is connected with each electro-hydraulic proportional valve; the control module is used for controlling the electro-hydraulic proportional valve to adjust the flow rate according to the movement speeds of the piston rods of the oil cylinders detected by the speed detection module, so that the movement speeds of the piston rods of the oil cylinders are consistent.
Preferably, the electro-hydraulic proportional valve is an integrated electro-hydraulic proportional valve with a reversing function and a flow control function.
Preferably, the speed detection module is a pull rope displacement sensor, and a pull rope of the pull rope displacement sensor is connected to a piston rod of the oil cylinder.
Preferably, piston rods of the oil cylinders are connected with the pressure plate, a hydraulic pipeline of each oil cylinder is provided with a pressure sensor, and the pressure sensors are connected with the control module; when the material pressing plate presses the thin plate stack material and the pressure detected by the pressure sensor reaches a set value, the control module controls the piston rods of the oil cylinders to stop moving.
According to a preferable scheme of the invention, the material pressing plate comprises a material pressing power plate, a material pressing positioning plate and a material pressing supporting plate, wherein piston rods of the plurality of oil cylinders are connected to the material pressing power plate together, the material pressing power plate and the material pressing positioning plate are arranged oppositely, and a sheet stack material to be overturned is positioned between the material pressing power plate and the material pressing positioning plate; the material pressing power plate and the material pressing positioning plate are respectively provided with the material pressing supporting plate, and the material pressing supporting plate is directly pressed on the sheet stack material when in work; and clamping mechanisms for clamping or loosening the material pressing supporting plate are further arranged on the material pressing power plate and the material pressing positioning plate.
Preferably, the number of the clamping mechanisms is multiple, and each clamping mechanism comprises a rotary locking piece and a clamping driving mechanism for driving the rotary locking piece to rotate; the middle part of the rotary locking part is rotatably connected to the pressing power plate or the pressing positioning plate, one end of the rotary locking part is rotatably connected with a power output shaft of the clamping driving mechanism, and the other end of the rotary locking part is provided with a clamping hook extending towards one side; and a clamping groove matched with the clamping hook is arranged on a splicing surface of the material pressing supporting plate, which is butted with the material pressing power plate or the material pressing positioning plate.
Preferably, each clamping mechanism further comprises a link mechanism, one end of the link mechanism is rotatably connected with the power transmission shaft of the clamping driving mechanism, and the other end of the link mechanism is rotatably connected with one end of the rotating locking piece.
Preferably, the clamping mechanism further comprises a transverse moving plate and a transverse moving driving mechanism for driving the transverse moving plate to transversely move; the rotating locking piece and the clamping driving mechanism are arranged on the transverse moving plate.
A synchronous material pressing control method of an automatic sheet stacking turnover machine is characterized by comprising the following steps:
(1) the control module controls the piston rods of the oil cylinders to extend and retract by controlling the electro-hydraulic proportional valve, and the piston rods of the oil cylinders drive the pressure plate to move together;
(2) the speed detection module detects the expansion speed of the piston rod of each oil cylinder in real time and feeds the expansion speed back to the control module;
(3) the control module judges whether the real-time speed of the piston rod of each oil cylinder is consistent with the set speed or not according to the real-time speed of the piston rod of each oil cylinder fed back by the speed detection module; when the real-time speed of the piston rod of the oil cylinder is inconsistent with the set speed, the flow control is carried out by controlling the electro-hydraulic proportional valve, and then the real-time speed of the piston rod of the oil cylinder is controlled to be consistent with the set speed.
Preferably, in the process that each oil cylinder drives the material pressing plate to press the material, when the material pressing plate is about to press the thin plate stack material, the control module stops adjusting the speed of the piston rod of each oil cylinder, and when the pressing detected by the pressure sensor reaches a set pressure value, the control module controls the corresponding oil cylinder to stop working.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the synchronous material pressing system, the hydraulic system is combined with the speed detection module, the moving speed of the piston rod of each oil cylinder is fed back in real time, and the hydraulic system and the control module perform independent feedback adjustment on each oil cylinder according to the fed-back speed information, so that the moving speed of the piston cylinder of each oil cylinder is kept consistent, the synchronous motion of the piston rods of a plurality of oil cylinders is realized, the pressing effect of a material pressing plate on a sheet stacking material is further improved, the sheet stacking material is prevented from loosening or being extruded and deformed in the turning process, and the phenomenon that the oil cylinders are blocked due to unbalanced stress is avoided.
2. The hydraulic system is adopted to drive the material pressing plate to move, so that the moving precision of the material pressing plate is improved; and aiming at the automobile thin plate stacking material with very large weight, the hydraulic clamping mode is adopted for clamping, so that the clamping stability of the thin plate stacking material is favorably improved.
Drawings
FIG. 1 is a schematic diagram of a hydraulic system in a high-synchronization pressing system of the automatic sheet pile turnover machine of the present invention.
Fig. 2 is a schematic front view of the working state of the pressure plate and the clamping mechanism.
Fig. 3 is a front view of the pressure plate and the clamping mechanism.
Fig. 4 is a front view of the swaging power plate or swaging positioning plate.
Fig. 5 is a front view of the swage plate.
Figure 6 is a front view of the fixture.
Detailed Description
The present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1, the high-synchronization material pressing system of the automatic sheet stacking and overturning machine of the embodiment includes a material pressing plate 5, a plurality of oil cylinders 3 for driving the material pressing plate 5, and a hydraulic system for controlling the oil cylinders 3 to work; in the hydraulic system, an electro-hydraulic proportional valve for controlling the working speed of the oil cylinder 3 is arranged on a hydraulic pipeline of each oil cylinder 3; the device also comprises a speed detection module and a control module, wherein the speed detection module is used for detecting the movement speed of the piston rod 4 of each oil cylinder 3; the signal input end of the control module is connected with each speed detection module, and the signal output end of the control module is connected with each electro-hydraulic proportional valve; the control module is used for controlling the electro-hydraulic proportional valve to adjust the flow rate according to the movement speeds of the piston rods 4 of the oil cylinders 3 detected by the speed detection module, so that the movement speeds of the piston rods 4 of the oil cylinders 3 are consistent.
Referring to fig. 1, the electro-hydraulic proportional valve is an integrated electro-hydraulic proportional valve 1 with a reversing function and a flow control function. The integrated electro-hydraulic proportional valve 1 can realize the reversing of the oil cylinder 3, the telescopic control of the piston rod 4 and the adjustment of flow, thereby simplifying a hydraulic pipeline.
The speed detection module of the present embodiment is a pull rope displacement sensor (not shown in the figure), and a pull rope of the pull rope displacement sensor is connected to a piston rod 4 of the oil cylinder 3. The pull rope displacement sensor can detect the speed of the linearly moving object, and the speed of the piston rod 4 of the oil cylinder 3 can be detected by adopting the existing pull rope displacement sensor. In addition, the speed detection module in the present embodiment may also be formed by a photoelectric displacement sensor or other speed sensors used for detecting speed in the prior art.
Referring to fig. 1, piston rods 4 of the plurality of oil cylinders 3 are connected with a pressure plate 5, a hydraulic pipeline of each oil cylinder 3 is provided with a pressure sensor 2, and the pressure sensors 2 are connected with a control module; when the material pressing plate 5 presses the thin plate stack material and the pressure detected by the pressure sensor 2 reaches a set value, the control module controls the piston rods 4 of the oil cylinders 3 to stop moving. The purpose of adopting the preferred scheme is that when the material pressing plate 5 presses the sheet stack material, if the piston rods 4 of the oil cylinders 3 still move synchronously due to the complete deformation of the sheet stack material, the shape error of the material pressing plate 5 and other reasons, the pressing force of the corresponding positions of the piston rods 4 of the oil cylinders 3 may be different, so that the acceptance of the sheet stack material in each pressing area is uneven, the pressing effect is not good, and the sheet stack material may loosen; through the pressure sensor 2, when the pressure plate 5 presses the sheet stack material, the speed of the piston rods 4 of the oil cylinders 3 is not adjusted (the piston rods 4 move slowly according to the preset speed at the moment), and whether the corresponding oil cylinders 3 stop working is judged by judging the pressure value of the pressure sensor 2, so that the pressing force of the corresponding positions of the piston rods 4 of the oil cylinders 3 can be ensured to reach the set value, the pressing effect is ensured, and the sheet is prevented from loosening and falling in the overturning process.
Referring to fig. 1, the hydraulic system of the present embodiment further includes an oil supply module, which includes an oil tank 7 and a variable displacement pump 6 for pumping oil to the oil cylinder 3. The number of the oil cylinders 3 in this embodiment is four, wherein the pressure sensor 2 in this embodiment is disposed on an oil inlet pipe or an oil outlet pipe of a hydraulic pipeline of each oil cylinder 3, and the pressure of a piston rod 4 of the oil cylinder 3 at this time is obtained by detecting the pressure of oil in the hydraulic pipeline, so as to obtain the pressure of a position, corresponding to the oil cylinder 3, on the pressure plate 5.
Referring to fig. 1-3, the pressing plate 5 includes a pressing power plate 8, a pressing positioning plate 10 and a pressing supporting plate 9, wherein the piston rods 4 of the plurality of oil cylinders 3 are commonly connected to the pressing power plate 8, the pressing power plate 8 and the pressing positioning plate 10 are oppositely disposed, and a sheet stack to be turned is located between the pressing power plate 8 and the pressing positioning plate 10; the material pressing power plate 8 and the material pressing positioning plate 10 are respectively provided with the material pressing supporting plate 9, and the material pressing supporting plate 9 is directly pressed on the sheet stack material when in work; and a clamping mechanism 11 for clamping or loosening the material pressing supporting plate 9 is further arranged on the material pressing power plate 8 and the material pressing positioning plate 10.
Adopt above-mentioned preferred scheme's aim at, can realize continuous sheet metal buttress material's continuous upset operation, improve the operating efficiency. Specifically, before turning over, the sheet stack is stacked on the swaging support plate 9, the swaging support plate 9 and the sheet stack thereon are transferred into the turning machine by an automatic conveying mechanism or a forklift, and assuming that the swaging positioning plate 10 is located below at this time, the swaging support plate 9 bearing the sheet stack is placed on the swaging positioning plate 10, and then the swaging support plate 9 is clamped and locked on the swaging positioning plate 10 by the clamping mechanism 11 located on the swaging positioning plate 10; then, the oil cylinders 3 drive the material pressing power plate 8 and the material pressing supporting plate 9 clamped and locked on the material pressing power plate 8 to move downwards, and finally the material pressing supporting plate 9 above is pressed above the sheet stack material, so that the sheet stack material is pressed tightly; and then, the turnover machine overturns for 180 degrees, the overturned sheet stack is stacked on the material pressing supporting plate 9 on the material pressing power plate 8, then the clamping mechanism 11 on the material pressing power plate 8 loosens the corresponding material pressing supporting plate 9, and the material pressing supporting plate 9 and the sheet stack which is overturned on the material pressing supporting plate can be sent out through an automatic conveying mechanism or a forklift, so that one-time overturning operation is completed. Then, keeping the oil cylinder 3 and the pressing power plate 8 in a lower state, transferring the pressing support plates 9 of the next batch and the sheet stacks on the pressing support plates into the turnover machine by an automatic conveying mechanism or a forklift, and clamping and locking the pressing support plates 9 loaded with the sheet stacks on the pressing power plate 8 by a clamping mechanism 11 on the pressing power plate 8; then the oil cylinders 3 work to push the pressing power plate 8, the corresponding pressing support plate 9 and the thin plate stack material to be turned upwards until the pressing support plate 9 on the pressing positioning plate 10 above the pressing power plate presses the thin plate stack material, so that the thin plate stack material is pressed tightly; and then, the turnover machine overturns for 180 degrees, the overturned sheet stack is stacked on the swaging support plate 9 on the swaging positioning plate 10, then the clamping mechanism 11 on the swaging positioning plate 10 loosens the corresponding swaging support plate 9, and the swaging support plate 9 and the sheet stack which is overturned on the swaging support plate can be sent out through an automatic conveying mechanism or a forklift, so that the second overturning operation is completed. So cycle work, the upset machine can realize continuous operation, there is not idle stroke in the working process, and production efficiency is improved, simultaneously through setting up material layer board 9 and clamping machine structure 11 for the business turn over upset machine that the sheet metal buttress material can be nimble links together with material pressing power board 8 or material pressing locating plate 10 when the upset, can let material layer board 9 and the whole shifting out of sheet metal buttress material again after the upset is accomplished, has improved the speed of sheet metal buttress material business turn over upset machine, further improves production efficiency.
2-3, a plurality of clamping mechanisms 11 are provided, and each clamping mechanism 11 comprises a rotary locking member 27 and a clamping driving mechanism 14 for driving the rotary locking member 27 to rotate; the middle part of the rotary locking piece 27 is rotatably connected to the pressing power plate 8 or the pressing positioning plate 10, one end of the rotary locking piece 27 is rotatably connected with a power output shaft of the clamping driving mechanism 14, and the other end of the rotary locking piece 27 is provided with a clamping hook 15 extending towards one side; and a clamping groove 16 matched with the clamping hook 15 is arranged on the splicing surface of the pressing supporting plate 9, which is butted with the pressing power plate 8 or the pressing positioning plate 10. After the pressing power plate 8 or the pressing positioning plate 10 is spliced with the pressing support plate 9, the clamping driving mechanism 14 drives the rotating locking member 27 to rotate, so that the clamping hook 15 on the rotating locking member 27 rotates from the outside of the clamping groove 16 to the inside of the clamping groove 16, the whole pressing support plate 9 is hooked and locked, and the combination of the pressing power plate 8 or the pressing positioning plate 10 and the pressing support plate 9 is realized; similarly, when the material pressing power plate 8 or the material pressing positioning plate 10 can be separated from the material pressing supporting plate 9 by the clamping driving mechanism 14 driving the rotating locking piece 27 to rotate reversely and allowing the clamping hook 15 to rotate out of the clamping groove 16. By arranging the clamping mechanism 11, the structure is simple, and the clamping or loosening is convenient.
Referring to fig. 2 to 3, in the present embodiment, there are two clamping mechanisms 11, and the two clamping mechanisms 11 are disposed opposite to each other. The C-shaped steel materials 22 are arranged on the splicing surfaces of the material pressing supporting plate 9, two of the C-shaped steel materials 22 which are arranged oppositely correspond to the clamping hooks 15 of the rotating locking pieces 27 of the two clamping mechanisms 11, and the grooves of the two C-shaped steel materials 22 form the clamping grooves 16.
Referring to fig. 4-5, further, a positioning member 20 is disposed at a central line position of the splicing surface of the material pressing supporting plate 9, and a positioning groove 21 is disposed on a top surface of the positioning member 20; positioning lugs 19 are arranged on splicing surfaces, spliced with the material pressing supporting plate 9, of the material pressing power plate 8 and the material pressing positioning plate 10, and the positioning lugs 19 are matched with the positioning grooves 21; the positioning of the pressing supporting plate 9, the pressing power plate 8 and the pressing positioning plate 10 during splicing is realized through the arrangement of the positioning piece 20 and the positioning lug 19, so that the clamping and locking precision is improved, and the subsequent clamping precision of sheet stacking is improved. In addition, the nip surface (the side in contact with the sheet stack) of the nip plate 9 of the present embodiment is provided with a plurality of rectangular steel members 23, and the rectangular steel members 23 are provided at equal intervals.
Referring to fig. 2 to 3, the clamping mechanism 11 further includes a transverse moving plate 13 and a transverse moving driving mechanism 12 for driving the transverse moving plate 13 to move transversely; the rotating locking piece 27 and the clamping driving mechanism 14 are both arranged on the transverse line moving plate 13. Through the arrangement of the transverse line moving plate 13 and the transverse moving driving mechanism 12, the rotary locking member 27 is driven to move in the transverse direction, so that the clamping hook 15 on the rotary locking member 27 can more conveniently enter or leave the clamping groove 16 on the material pressing supporting plate 9, and the material pressing supporting plate 9 can be conveniently locked and released; meanwhile, the arrangement of the transverse moving driving mechanism and the transverse moving plate 13 can adjust the position of the clamping hook 15 on the rotary locking member 27, so that the pressing support plate 9 with different specifications and sizes can be adapted. In this embodiment, a lateral moving guide mechanism is disposed between the lateral moving plate 13 and the pressing power plate 8 and the pressing positioning plate 10, and the lateral moving guide mechanism includes a guide rail 18 fixedly disposed on the pressing power plate 8 and the pressing positioning plate 10, and a slider 17 disposed at the bottom of the lateral moving plate 13. The clamping driving mechanism 14 and the traverse driving mechanism 12 in this embodiment are both constituted by cylinders, but may also be constituted by a motor and a screw transmission mechanism or other linear driving mechanisms.
In addition, the clamping mechanism 11 of the present embodiment may also complete the locking and releasing of the swage pallet 9 only by the traverse driving mechanism 12 and the traverse moving plate 13, wherein one end of the traverse moving plate 13 is connected to the power output shaft of the traverse driving mechanism 12, and the other end of the traverse moving plate 13 is provided with the clamping hook 15. When the device works, the clamping hooks 15 on the transverse moving plate enter or leave the clamping grooves 16 on the material pressing supporting plate 9 under the driving of the transverse moving driving mechanism 12, so that the material pressing supporting plate 9 is locked or unlocked.
Referring to fig. 2, 3 and 6, the clamping mechanism 11 in the present embodiment further includes a link mechanism, one end of which is rotatably connected to the power transmission shaft of the clamping driving mechanism 14, and the other end of which is rotatably connected to one end of the rotary lock member 27. Specifically, the link mechanism of the present embodiment is combined with the rotary lock 27 to form a planar multi-link mechanism; the link mechanism comprises a first rotating piece 24, a second rotating piece 25 and a third rotating piece 26, the middle position of the first rotating piece 24 is hinged to the swaging power plate 8 or the swaging positioning plate 10, one end of the third rotating piece 26 is hinged to the swaging power plate 8 or the swaging positioning plate 10, the other end of the third rotating piece 26 is hinged to the end of the rotating locking piece 27, and the two ends of the second rotating piece 25 are hinged to the other end of the first rotating piece 24 and the middle position of the third rotating piece 26 respectively; the end of the clamping driving mechanism 14 (cylinder body of the cylinder) is also hinged with the material pressing power plate 8 or the material pressing positioning plate 10. In operation, the clamping driving mechanism 14 drives the first rotating member 24 to rotate around the rotation point between itself and the pressing power plate 8 (or the pressing positioning plate 10), and drives the third rotating member 26 to rotate around itself through the conduction of the second rotating member 25, so as to drive the clamping hook 15 of the rotating locking member 27 to enter or leave the clamping groove 16 on the pressing supporting plate 9. Set up link mechanism's aim at, in narrow and small space, the realization is to the rotation drive who rotates retaining member 27, and be favorable to the increase to rotate retaining member 27's turned angle, thereby let rotate retaining member 27 can leave the screens groove 16 of pressing material layer board 9 completely and not in the corresponding range of pressing material layer board 9 (or let rotate retaining member 27 and can rotate to the top of pressing material layer board 9), and then so that carry out lateral shifting under sideslip actuating mechanism 12's drive, realize the regulation of locking position.
Referring to fig. 1, the synchronous material pressing control method of the automatic sheet pile turnover machine of the embodiment is characterized by comprising the following steps:
(1) the control module controls the telescopic motion of the piston rods 4 of the oil cylinders 3 by controlling the electro-hydraulic proportional valve, and the piston rods 4 of the oil cylinders 3 drive the pressure plate 5 to move together;
(2) the speed detection module detects the expansion speed of the piston rod 4 of each oil cylinder 3 in real time and feeds the expansion speed back to the control module;
(3) the control module judges whether the real-time speed of the piston rod 4 of each oil cylinder 3 is consistent with the set speed or not according to the real-time speed of the piston rod 4 of each oil cylinder 3 fed back by the speed detection module; when the real-time speed of the piston rod 4 of the oil cylinder 3 is inconsistent with the set speed, the flow control is carried out by controlling the electro-hydraulic proportional valve, and then the real-time speed of the piston rod 4 of the oil cylinder 3 is controlled to be consistent with the set speed.
Further, in the process that each oil cylinder 3 drives the material pressing plate 5 to press the material, when the material pressing plate 5 presses the sheet stack material, the control module stops adjusting the speed of the piston rod 4 of each oil cylinder 3, and when the pressing detected by the pressure sensor 2 reaches a set pressure value, the control module controls the corresponding oil cylinder 3 to stop working.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and equivalents thereof, which are intended to be included in the scope of the present invention.
Claims (8)
1. A high-synchronization material pressing system of an automatic sheet stacking and overturning machine comprises a material pressing plate, a plurality of oil cylinders for driving the material pressing plate and a hydraulic system for controlling the oil cylinders to work, and is characterized in that an electro-hydraulic proportional valve for controlling the working speed of the oil cylinders is arranged on a hydraulic pipeline of each oil cylinder in the hydraulic system; the device also comprises a speed detection module and a control module, wherein the speed detection module is used for detecting the movement speed of the piston rod of each oil cylinder; the signal input end of the control module is connected with each speed detection module, and the signal output end of the control module is connected with each electro-hydraulic proportional valve; the control module is used for controlling the electro-hydraulic proportional valve to adjust the flow rate according to the movement speeds of the piston rods of the oil cylinders detected by the speed detection module so as to enable the movement speeds of the piston rods of the oil cylinders to be consistent;
the material pressing plate comprises a material pressing power plate, a material pressing positioning plate and a material pressing supporting plate, wherein piston rods of the oil cylinders are connected to the material pressing power plate together, the material pressing power plate and the material pressing positioning plate are arranged oppositely, and a sheet stack to be turned is positioned between the material pressing power plate and the material pressing positioning plate; the material pressing power plate and the material pressing positioning plate are respectively provided with the material pressing supporting plate, and the material pressing supporting plate is directly pressed on the sheet stack material when in work; clamping mechanisms for clamping or loosening the material pressing supporting plate are further arranged on the material pressing power plate and the material pressing positioning plate;
the clamping mechanism comprises a plurality of clamping mechanisms, and each clamping mechanism comprises a rotary locking part and a clamping driving mechanism for driving the rotary locking part to do rotary motion; the middle part of the rotary locking part is rotatably connected to the pressing power plate or the pressing positioning plate, one end of the rotary locking part is rotatably connected with a power output shaft of the clamping driving mechanism, and the other end of the rotary locking part is provided with a clamping hook extending towards one side; and a clamping groove matched with the clamping hook is arranged on a splicing surface of the material pressing supporting plate, which is butted with the material pressing power plate or the material pressing positioning plate.
2. The high-synchronization material pressing system of the automatic sheet stacking and overturning machine according to claim 1, wherein the electro-hydraulic proportional valve is an integrated electro-hydraulic proportional valve with reversing function and flow control function.
3. The high-synchronization pressing system of the automatic sheet stacking and overturning machine according to claim 1, wherein the speed detection module is a pull rope displacement sensor, and a pull rope of the pull rope displacement sensor is connected to a piston rod of an oil cylinder.
4. The high-synchronization material pressing system of the automatic sheet stacking and turning machine according to claim 1, wherein piston rods of the plurality of oil cylinders are connected with the material pressing plate, a hydraulic pipeline of each oil cylinder is provided with a pressure sensor, and the pressure sensors are connected with the control module; when the material pressing plate presses the thin plate stack material and the pressure detected by the pressure sensor reaches a set value, the control module controls the piston rods of the oil cylinders to stop moving.
5. A highly synchronized material pressing system for an automatic sheet pile inverting machine according to claim 1, wherein each of the grippers further comprises a link mechanism having one end rotatably connected to the power transmission shaft of the gripper driving mechanism and the other end rotatably connected to one end of the rotary lock.
6. The high-speed material pressing system of the automatic sheet stacking and overturning machine according to claim 1, wherein the clamping mechanism further comprises a transverse moving plate and a transverse moving driving mechanism for driving the transverse moving plate to move transversely; the rotating locking piece and the clamping driving mechanism are arranged on the transverse moving plate.
7. A control method of a high-synchronization pressing system using the automatic sheet pile inverting machine according to any one of claims 1 to 6, characterized by comprising the steps of:
(1) the control module controls the piston rods of the oil cylinders to extend and retract by controlling the electro-hydraulic proportional valve, and the piston rods of the oil cylinders drive the pressure plate to move together;
(2) the speed detection module detects the expansion speed of the piston rod of each oil cylinder in real time and feeds the expansion speed back to the control module;
(3) the control module judges whether the real-time speed of the piston rod of each oil cylinder is consistent with the set speed or not according to the real-time speed of the piston rod of each oil cylinder fed back by the speed detection module; when the real-time speed of the piston rod of the oil cylinder is inconsistent with the set speed, the flow control is carried out by controlling the electro-hydraulic proportional valve, and then the real-time speed of the piston rod of the oil cylinder is controlled to be consistent with the set speed.
8. The control method according to claim 7, wherein in the process that each cylinder drives the pressure plate to press the material, when the pressure plate is about to press the thin plate stack, the control module stops adjusting the speed of the piston rod of each cylinder, and when the pressing detected by the pressure sensor reaches a set pressure value, the control module controls the corresponding cylinder to stop working.
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| CN114452694A (en) * | 2022-03-16 | 2022-05-10 | 景津装备股份有限公司 | Multifunctional three-way device assisting synchronous pressing plate of double oil cylinders and filter plate pressing mechanism |
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