CN112983928A - Protection system suitable for cylinder - Google Patents
Protection system suitable for cylinder Download PDFInfo
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- CN112983928A CN112983928A CN202110328153.9A CN202110328153A CN112983928A CN 112983928 A CN112983928 A CN 112983928A CN 202110328153 A CN202110328153 A CN 202110328153A CN 112983928 A CN112983928 A CN 112983928A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Actuator (AREA)
Abstract
The invention discloses a protection system suitable for a cylinder, which comprises a main control mechanism, a sub-control mechanism and a protection main body, wherein the main control mechanism comprises a main control body and a sub-control body; an air outlet pipe of the main control mechanism is arranged on an air inlet of the sub-control mechanism; the other air outlet pipe of the main control mechanism is arranged on an air port of the protection main body; an air outlet pipe of the sub-control mechanism is arranged on the other air port of the protection main body; the main control mechanism is a first two-position five-way electromagnetic valve, and an air outlet pipe A of the first two-position five-way electromagnetic valve is arranged on an air port on the right side of the air cylinder; and the air outlet pipe B of the two-position five-way electromagnetic valve is arranged on the sub-control mechanism. The cylinder is realized in a non-acting state, the gas at the two ends of the piston of the cylinder is in an open state, the piston can quickly release the pressure, the cylinder is not easy to damage under the reaction force, the cylinder explosion probability is obviously reduced, and the service life of the cylinder is effectively prolonged. In addition, because the gas at the two ends of the piston of the cylinder is in an open state, the state of the force application equipment of the cylinder does not need to be frequently adjusted, and the service life of the force application equipment is prolonged.
Description
Technical Field
The invention relates to the field of cylinders, in particular to a protection system suitable for a cylinder.
Background
The cylinder is a pneumatic actuator for converting pressure energy of compressed gas into mechanical energy in pneumatic transmission. The cylinder has two types of reciprocating linear motion and reciprocating swing. The cylinders which do reciprocating linear motion can be divided into 4 types of single-acting cylinders, double-acting cylinders, diaphragm type cylinders and impact cylinders. When in use, the electromagnetic valve is often used together with the electromagnetic valve. Specifically, under the control of a two-position five-port electromagnetic valve, if the electrified cylinder rod extends, the power-off cylinder rod retracts, and vice versa, only two working states exist, and the cylinder rod is in a stressed state regardless of extension or retraction.
The existing cylinder protection system, such as a transfer cylinder intelligent buffer control device disclosed in chinese patent No. CN204783970U, includes a transfer cylinder, a pull rope sensor, a PLC control box, a valve plate, an air bag, a forward proximity switch, a backward proximity switch, and a three-way air switch, where the pull rope sensor is fixed at the head of the transfer cylinder, the PLC control box is installed on the body of the transfer cylinder, two air outlet interfaces of the valve plate are respectively connected to the head and tail air inlet interfaces of the transfer cylinder, and the air outlet interface of the air bag is connected to the main air inlet interface of the valve plate; the valve plate is provided with a first two-position five-way electromagnetic valve and a second two-position five-way electromagnetic valve, the first two-position five-way pneumatic reversing valve and the second two-position five-way pneumatic reversing valve, two interfaces of the first two-position five-way electromagnetic valve are respectively connected with an upper interface and a lower interface of the first two-position five-way pneumatic reversing valve, two interfaces of the second two-position five-way electromagnetic valve are respectively connected with an upper interface and a lower interface of the second two-position five-way pneumatic reversing valve, two interfaces of the first two-position five-way pneumatic reversing valve are respectively connected with a three-way pneumatic switch advancing interface and a regulating valve, and two interfaces of the second two-position five-way pneumatic reversing valve are respectively connected; the forward approach switch is arranged at the handle of the three-way air switch, and the backward approach switch is arranged on the stay cord fixing bracket.
However, under some working conditions, such as a pressing operation, the transfer cylinder is transferred from a non-working position to a working position in a pressing assembly process, and the transfer speed is high, so that the transfer distance is difficult to control on the premise of ensuring the pressing effect, and at the moment, the cylinder rod is often damaged by a reverse force, so that the damage of the cylinder and the air circuit element is caused, and particularly, when the cylinder rod is matched with high-power pressing equipment such as an oil cylinder, the damage probability of the cylinder and the air circuit element is higher.
Disclosure of Invention
The invention provides a protection system suitable for an air cylinder, which solves the problem that an air cylinder and an air path element are damaged due to the action of reverse force on an air cylinder rod in processes such as pressing in workpiece assembly and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a protection system suitable for a cylinder comprises a main body frame, a pressing mechanism, a cylinder protection system, a conveying mechanism and an intelligent control mechanism.
The main body frame includes a base and a stand.
The base is a cuboid I, a rack is arranged above the base, and the rack is a Z-shaped column hollow container; a rectangular through hole I, a rectangular through hole II, a rectangular through hole III and a rectangular groove I are arranged on an upper bottom plate of the Z-shaped cylindrical hollow container; the rectangular through hole I and the rectangular through hole II are respectively positioned on the left side and the right side of the upper bottom plate and are parallel to each other; the rectangular through hole III is positioned between the rectangular through hole I and the rectangular through hole II; the first rectangular groove is positioned behind the second rectangular through hole.
The pressing mechanism comprises an air cylinder pressing device and an oil cylinder pressing device.
The cylinder pressing device comprises a power cylinder and a first pressing frame.
The power cylinder is arranged on the upper bottom plate of the Z-shaped cylinder hollow container through the mounting frame and is positioned on the left side of the rectangular through hole I; the movable end of the power cylinder is provided with a first pressing frame.
And the first press fit frame comprises an adjusting clamping base and an adsorption table.
The adjusting and clamping base comprises a cross-shaped platform, an adjusting screw rod I and a buffer pad.
The cross-shaped platform is arranged at the movable end of the power cylinder, four positioning blocks are arranged on the right side face of the cross-shaped platform, adjusting screw holes are formed in the positioning blocks, the adjusting screw holes in the positioning blocks are connected with a first adjusting screw rod through bolts, and a cushion pad is arranged at one end of the first adjusting screw rod.
The adsorption platform is an inverted cylindrical container which is arranged on the cross-shaped platform, and an electromagnet is arranged in the inverted cylindrical container.
The oil cylinder pressing device comprises a power oil cylinder and a pressing frame II.
The power oil cylinder is arranged on the upper bottom plate of the Z-shaped column hollow container through the mounting frame and is positioned on the right side of the rectangular through hole II; the movable end of the power cylinder is provided with a second pressing frame.
And the second press fit frame comprises an adjustable press seat and a support plate pushing frame.
The adjustable pressure seat is a cuboid plate, the lower bottom surface of the adjustable pressure seat is arranged at the movable end of the power cylinder, and a plurality of positioning pin holes are formed in the adjustable pressure seat at equal intervals.
The support plate pushing frame comprises a fixed strip and a movable strip.
The fixing strip is arranged on the adjustable pressing seat through the L-shaped mounting frame, two positioning screw holes are formed in the fixing strip, two adjusting screw rods are connected with the positioning screw holes in the fixing strip through bolts, and one ends of the adjusting screw rods are arranged on the movable strip through rolling bearings.
The movable strips are equidistantly provided with a plurality of square open through grooves.
The cylinder protection system comprises a main control mechanism and a sub-control mechanism.
An air outlet pipe of the main control mechanism is arranged on an air inlet of the sub-control mechanism; the other air outlet pipe of the main control mechanism is arranged on an air port of the protection main body; an air outlet pipe of the sub-control mechanism is arranged on the other air port of the protection main body.
The main control mechanism is a first two-position five-way electromagnetic valve, and an air outlet pipe A of the first two-position five-way electromagnetic valve is arranged on an air port on the right side of the power cylinder; an air outlet pipe B of the two-position five-way electromagnetic valve is arranged on the sub-control mechanism;
the sub-control mechanism is a two-position five-way electromagnetic valve II, an air inlet of the two-position five-way electromagnetic valve II is fixedly connected with an air outlet pipe B of the two-position five-way electromagnetic valve I through a connecting pipe, and the air outlet pipe B of the two-position five-way electromagnetic valve II is arranged on an air port on the left side of the power cylinder.
The conveying mechanism comprises an input device, an output device and an auxiliary transmission device.
The input device comprises a plurality of first roll shafts and a first servo motor.
The first roll shaft is arranged in the second rectangular through hole in an equal distance mode through the mounting frame, and one end of the first roll shaft is in transmission connection with the servo motor.
The output device comprises a plurality of second roll shafts and a second servo motor.
The second roll shaft is arranged in the first rectangular through hole in an equal distance mode through the mounting frame, and one end of the second roll shaft is in transmission connection with the second servo motor.
The auxiliary transmission device comprises a fixed structure and a movable structure.
The fixed knot constructs including a plurality of roller three, and the roller three sets up in rectangle through-hole three through the mounting bracket equidistance, and the roller three place horizontal plane is higher than roller two and roller one place horizontal plane.
The movable structure comprises a first push rod motor, a weighing panel and a roller.
The first push rod motor is arranged on a lower bottom plate of the Z-shaped cylinder hollow container, and a weighing panel is arranged at the movable end of the first push rod motor.
The upper bottom surface of the weighing panel is provided with a plurality of rollers through a mounting rack; the weighing panel is positioned below the first rectangular through hole, the second rectangular through hole and the third rectangular through hole.
The roller wheels are respectively positioned below the first rectangular through hole and the second rectangular through hole, a plurality of limiting blocks are arranged on the upper bottom surface of the weighing panel, the limiting blocks are positioned on the outer sides of the roller wheels, and the limiting blocks are higher than the roller wheels; the distance between the rollers and the distance between the limiting blocks are matched with the distance between the first roll shaft and the distance between the second roll shaft; the distance between the through grooves with the square openings is matched with the distance between the limiting blocks.
The intelligent control mechanism comprises a limit control sensing device and an offside detection sensing device.
The limit control induction device comprises a positioning strip and an induction limit strip.
The positioning strip is arranged on an upper bottom plate of the Z-shaped cylindrical hollow container, two positioning screw holes are formed in the positioning strip, a third adjusting screw rod is connected in each positioning screw hole of the positioning strip through a bolt, and one end of the third adjusting screw rod is arranged on the induction limiting strip through a rolling bearing; the lower bottom surface of the induction limit strip is provided with a distance sensor.
The offside detection sensing device comprises a fixed block and a detection block.
The fixed block is arranged in the first rectangular groove, a positioning screw hole is formed in the fixed block, a bolt is connected with a fourth adjusting screw rod in the positioning screw hole in the fixed block, and one end of the fourth adjusting screw rod is arranged on the detection block through a rolling bearing.
An infrared obstacle avoidance sensor is arranged on the upper bottom surface of the detection block; the position of the infrared obstacle avoidance sensor is higher than the limiting control induction device.
A microprocessor is arranged in the Z-shaped cylinder hollow container, and a touch sensor module is arranged on the outer side wall of the Z-shaped cylinder hollow container.
The device comprises a two-position five-way electromagnetic valve I, a two-position five-way electromagnetic valve II, a servo motor I, a servo motor II, a push rod motor I, a distance sensor, an infrared obstacle avoidance sensor, a touch sensor module and a microprocessor, wherein the two-position five-way electromagnetic valve I, the two-position five-way electromagnetic valve II, the servo motor I, the servo motor II.
Compared with the prior art, the method has the beneficial effects that:
according to the invention, through the integrated arrangement of the main control mechanism, the sub-control mechanism and the protection main body, the air cylinders can be in an open state at two ends of the piston of the air cylinder under a non-acting state, the piston can quickly release pressure, the air cylinders are not easy to damage under a reaction force, the cylinder explosion probability is obviously reduced, and the service life of the air cylinders is effectively prolonged. In addition, because the gas at the two ends of the piston of the cylinder is in an open state, the state of the force application equipment of the cylinder does not need to be frequently adjusted, and the service life of the force application equipment is prolonged.
Drawings
FIG. 1 is an assembled view of the present invention;
FIG. 2 is a schematic structural diagram of a two-position five-way solenoid valve according to the present invention;
FIG. 3 is a schematic structural view of a two-position five-way solenoid valve of the present invention;
FIG. 4 is a schematic diagram of the direction of the two-position five-way solenoid valve I and the two-position five-way solenoid valve II;
FIG. 5 is a schematic diagram of the gas trend of the two-position five-way solenoid valve I being powered on and the two-position five-way solenoid valve II being powered off according to the present invention;
FIG. 6 is a schematic diagram of the gas flow direction when the two-position five-way solenoid valve I is powered off and the two-position five-way solenoid valve II is powered off or on;
FIG. 7 is a schematic front view of a partial cross-sectional structure of the present invention;
FIG. 8 is a schematic top view of the present invention;
FIG. 9 is a schematic view of a bearing and workpiece upper part of the present invention;
FIG. 10 is a schematic view of the assembled state of the bearing and the workpiece according to the present invention;
FIG. 11 is a schematic view showing an over-distance operation state of a cylinder during assembly of a bearing and a workpiece according to the present invention;
FIG. 12 is a schematic view showing the operation of a conventional cylinder in accordance with embodiment 3 of the present invention;
fig. 13 is a schematic operation diagram of three working states in embodiment 3 of the present invention.
In the figure: 101. two-position five-way electromagnetic valve I, 102, two-position five-way electromagnetic valve II, 103, air cylinder, 201, base, 202, rack, 203, rectangular through hole I, 204, rectangular through hole II, 205, rectangular through hole III, 206, rectangular groove I, 301, power cylinder, 302, cross-shaped platform, 303, adsorption table, 401, power cylinder, 402, adjustable pressing seat, 403, fixed strip, 404, movable strip, 501, roller shaft I, 502, roller shaft II, 503, roller shaft III, 504, push rod motor I, 505, weighing panel, 506, roller, 507, limiting block, 601, positioning strip, 602, induction limiting strip, 603, fixed block, 604, detection block, 701, oil cylinder, 801, two-position five-way electromagnetic valve III, 802, common air cylinder I, 901, two-position five-way electromagnetic valve A, 902, two-position five-way electromagnetic valve B, 903. A second common cylinder,
1011. The two-position five-way electromagnetic valve comprises a first two-position five-way electromagnetic valve air inlet, 1012, a first two-position five-way electromagnetic valve 01 air outlet, 1013, a first two-position five-way electromagnetic valve 02 air outlet, 1014, a first two-position five-way electromagnetic valve B air outlet, 1015, a first two-position five-way electromagnetic valve A air outlet, 1021, a second two-position five-way electromagnetic valve air inlet, 1022, a second two-position five-way electromagnetic valve 01 air outlet, 1023, a second two-position five-way electromagnetic valve 02 air outlet, 1024, a second two-position five-way electromagnetic valve B.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Embodiment 1, referring to fig. 1 to 6, a protection system for a cylinder includes a main control mechanism, a sub-control mechanism, and a protection body.
An air outlet pipe of the main control mechanism is arranged on an air inlet of the sub-control mechanism; the other air outlet pipe of the main control mechanism is arranged on an air port of the protection main body; an air outlet pipe of the sub-control mechanism is arranged on the other air port of the protection main body.
The main control mechanism is a two-position five-way electromagnetic valve I101, and an air outlet pipe 1015 of the two-position five-way electromagnetic valve I A is arranged on an air port on the right side of the air cylinder 103; the two-position five-way electromagnetic valve B air outlet pipe 1014 is arranged on the sub-control mechanism.
The sub-control mechanism is a two-position five-way electromagnetic valve II 102, a two-position five-way electromagnetic valve II air inlet 1021 is fixedly connected with a two-position five-way electromagnetic valve I B air outlet pipe 1014 through a connecting pipe, and a B air outlet pipe 1024 of the two-position five-way electromagnetic valve II is arranged on an air port on the left side of the air cylinder 103.
The working principle and the using method are as follows:
three working conditions of the cylinder are obtained by connecting two-position five-way electromagnetic valves in series, and two air ports of the cylinder 103 are communicated with the atmosphere under the third working condition.
The specific process is as follows:
an air outlet pipe 1015 of the first two-position five-way electromagnetic valve A is arranged on an air port of the air cylinder 103, and an air outlet pipe B of the first two-position five-way electromagnetic valve B is arranged on an air inlet of the second two-position five-way electromagnetic valve;
under the normal working condition of the machine,
in the first working condition, the first two-position five-way solenoid valve 101 and the second two-position five-way solenoid valve 102 are electrified, gas flows through the first two-position five-way solenoid valve B gas outlet pipe 1014 to the second two-position five-way solenoid valve B gas outlet pipe 1024 to normally supply gas to the cylinder 103, and gas on the other side of the piston of the cylinder 103 flows out through the first two-position five-way solenoid valve A gas outlet pipe 1015 to the first two-position five-way solenoid valve 02 gas outlet pipe 1013.
In the second working condition, the first two-position five-way electromagnetic valve 101 is powered off, the second two-position five-way electromagnetic valve 102 is powered on or powered off, and gas is supplied to the cylinder 103 through the gas outlet pipe 1015 of the first two-position five-way electromagnetic valve A.
When the second two-position five-way electromagnetic valve 102 is electrified, gas on the other side of the piston of the cylinder 103 flows out from an air outlet pipe 1024 of the second two-position five-way electromagnetic valve B to an air outlet pipe 1012 of the first two-position five-way electromagnetic valve 01.
And under the condition that the second two-position five-way electromagnetic valve 102 is powered off, gas on the other side of the piston of the cylinder 103 flows out through a gas outlet pipe B of the second two-position five-way electromagnetic valve.
The above two operating conditions are the process of advancing or retracting the piston in the cylinder 103.
In the third working condition, the first two-position five-way electromagnetic valve 101 is powered on, the second two-position five-way electromagnetic valve 102 is powered off, and the gas flows through the gas outlet pipe 1015 of the first two-position five-way electromagnetic valve to the gas outlet pipe 1025 of the second two-position five-way electromagnetic valve A and finally flows into the atmosphere (the air pump does not need to be turned off, so that the time is saved, and the service life of the air pump is prolonged.
And the gas on one side of the piston flows out from the gas outlet pipe 1024 of the two-position five-way electromagnetic valve II B to the gas outlet pipe 1022 of the two-position five-way electromagnetic valve II 01.
Gas on the other side of the piston flows out from the gas outlet pipe 1015 of the two-position five-way electromagnetic valve A to the gas outlet pipe 1013 of the two-position five-way electromagnetic valve 02.
In the invention, the gas at the two ends of the piston is in an open state, the piston can quickly release the pressure, the cylinder 103 cannot be damaged under the reaction force applied by the matched equipment, the cylinder explosion probability is obviously reduced, and the service life of the cylinder 103 is prolonged.
In addition, the invention enables the cylinder 103 to obtain an unstressed free state, and can effectively protect the cylinder 103 and air circuit elements; the device is suitable for the condition of reverse displacement caused by uneven stress of the two oil cylinders. The structure is simple, the cost is low, and the maintenance is easy.
In the use process, the control chip and the sensor are matched, so that a better protection effect can be obtained.
Embodiment 2, referring to fig. 1 to 11, a protection system for a cylinder includes a main frame, a pressing mechanism, a cylinder protection system, a conveying mechanism, and an intelligent control mechanism.
The body frame includes a base 201 and a stage 202.
The base 201 is a cuboid I, a rack 202 is arranged above the base 201, and the rack 202 is a Z-shaped cylindrical hollow container; the upper bottom plate of the Z-shaped column hollow container is provided with a rectangular through hole I203, a rectangular through hole II 204, a rectangular through hole III 205 and a rectangular groove I206; the first rectangular through hole 203 and the second rectangular through hole 204 are respectively positioned on the left side and the right side of the upper bottom plate, and the first rectangular through hole 203 and the second rectangular through hole 204 are parallel to each other; the rectangular through hole III 205 is positioned between the rectangular through hole I203 and the rectangular through hole II 204; the first rectangular groove 206 is located behind the second rectangular through hole 204.
The pressing mechanism comprises an air cylinder pressing device and an oil cylinder pressing device.
The cylinder pressing device comprises a power cylinder 301 and a first pressing frame.
The power cylinder 301 is arranged on the upper bottom plate of the Z-shaped column hollow container through a mounting frame, and the power cylinder 301 is positioned on the left side of the rectangular through hole I203; the movable end of the power cylinder 301 is provided with a first pressing frame.
The first press fit frame comprises an adjusting clamping base and an adsorption platform 303.
The adjusting and clamping base comprises a cross-shaped platform 302, a first adjusting screw and a buffer pad.
The cross-shaped platform 302 is arranged at the movable end of the power cylinder 301, four positioning blocks are arranged on the right side face of the cross-shaped platform 302, adjusting screw holes are formed in the positioning blocks, the adjusting screw holes in the positioning blocks are connected with a first adjusting screw rod through bolts, and a cushion pad is arranged at one end of the first adjusting screw rod.
The adsorption platform 303 is an inverted cylindrical container, the inverted cylindrical container is arranged on the cross-shaped platform 302, and an electromagnet is arranged in the inverted cylindrical container.
The oil cylinder pressing device comprises a power oil cylinder 401 and a pressing frame II.
The power oil cylinder 401 is arranged on an upper bottom plate of the Z-shaped column hollow container through a mounting frame, and the power oil cylinder 401 is positioned on the right side of the rectangular through hole II 204; and a second pressing frame is arranged at the movable end of the power cylinder 401.
The second pressing frame comprises an adjustable pressing base 402 and a carrier pushing frame.
The adjustable pressing seat 402 is a cuboid plate, the lower bottom surface of the adjustable pressing seat 402 is arranged at the movable end of the power cylinder 401, and a plurality of positioning pin holes are formed in the adjustable pressing seat 402 at equal intervals.
The carrier plate pushing frame comprises a fixed strip 403 and a movable strip 404.
The fixing strip 403 is arranged on the adjustable pressing seat 402 through an L-shaped mounting frame, two positioning screw holes are formed in the fixing strip 403, a second adjusting screw rod is connected with the positioning screw holes in the fixing strip 403 through bolts, and one end of the second adjusting screw rod is arranged on the movable strip 404 through a rolling bearing.
A plurality of square open through grooves are equidistantly arranged on the movable strip 404.
The cylinder protection system comprises a main control mechanism and a sub-control mechanism.
An air outlet pipe of the main control mechanism is arranged on an air inlet of the sub-control mechanism; the other air outlet pipe of the main control mechanism is arranged on an air port of the protection main body; an air outlet pipe of the sub-control mechanism is arranged on the other air port of the protection main body.
The main control mechanism is a two-position five-way electromagnetic valve I101, and an air outlet pipe 1015 of the two-position five-way electromagnetic valve I A is arranged on an air port on the right side of the power cylinder 301; an air outlet pipe 1014 of the two-position five-way electromagnetic valve B is arranged on the sub-control mechanism;
the sub-control mechanism is a two-position five-way electromagnetic valve II 102, a two-position five-way electromagnetic valve II air inlet 1021 is fixedly connected with a two-position five-way electromagnetic valve I B air outlet pipe 1014 through a connecting pipe, and a two-position five-way electromagnetic valve II B air outlet pipe 1024 is arranged on a left air port of the power cylinder 301.
The conveying mechanism comprises an input device, an output device and an auxiliary transmission device.
The input device comprises a plurality of first roll shafts 501 and a first servo motor.
The first roller shaft 501 is arranged in the second rectangular through hole 204 through the mounting rack in an equal distance mode, and one end of the first roller shaft 501 is in transmission connection with the servo motor.
The output device comprises a plurality of second roll shafts 502 and a second servo motor.
The second roller shaft 502 is arranged in the first rectangular through hole 203 through the mounting rack at equal intervals, and one end of the second roller shaft 502 is in transmission connection with the second servo motor.
The auxiliary transmission device comprises a fixed structure and a movable structure.
The fixing structure comprises a plurality of roller shafts III 503, the roller shafts III 503 are arranged in the rectangular through holes III 205 at equal intervals through mounting frames, and the horizontal plane where the roller shafts III 503 are located is higher than the horizontal plane where the roller shafts II 502 and the roller shafts I501 are located.
The movable structure comprises a first push rod motor 504, a weighing panel 505 and a roller 506.
The first push rod motor 504 is arranged on the lower bottom plate of the Z-shaped column hollow container, and a weighing panel 505 is arranged at the movable end of the first push rod motor 504.
A plurality of rollers 506 are arranged on the upper bottom surface of the weighing panel 505 through a mounting rack; the weighing panel 505 is located below the first rectangular through hole 203, the second rectangular through hole 204 and the third rectangular through hole 205.
The rollers 506 are respectively positioned below the first rectangular through hole 203 and the second rectangular through hole 204, a plurality of limiting blocks 507 are arranged on the upper bottom surface of the weighing panel 505, the limiting blocks 507 are positioned on the outer sides of the rollers 506, and the limiting blocks 507 are higher than the rollers 506; the distance between the rollers 506 and the distance between the limiting blocks 507 are matched with the distance between the first roller shaft 501 and the distance between the second roller shaft 502; the distance between the through grooves with square openings is matched with the distance between the limiting blocks 507.
The intelligent control mechanism comprises a limit control sensing device and an offside detection sensing device.
The limit control sensing device comprises a positioning strip 601 and a sensing limit strip 602.
The positioning strip 601 is arranged on an upper bottom plate of the Z-shaped cylindrical hollow container, two positioning screw holes are formed in the positioning strip 601, an adjusting screw rod III is connected in each positioning screw hole in the positioning strip 601 through a bolt, and one end of each adjusting screw rod III is arranged on the induction limiting strip 602 through a rolling bearing; a distance sensor is arranged on the lower bottom surface of the induction limit strip 602.
The offside detection sensing device comprises a fixed block 603 and a detection block 604.
The fixing block 603 is arranged in the first rectangular groove 206, a positioning screw hole is formed in the fixing block 603, a fourth adjusting screw is bolted in the positioning screw hole in the fixing block 603, and one end of the fourth adjusting screw is arranged on the detection block 604 through a rolling bearing.
An infrared obstacle avoidance sensor is arranged on the upper bottom surface of the detection block 604; the position of the infrared obstacle avoidance sensor is higher than the limiting control induction device.
A microprocessor is arranged in the Z-shaped cylinder hollow container, and a touch sensor module is arranged on the outer side wall of the Z-shaped cylinder hollow container.
The two-position five-way electromagnetic valve I101, the two-position five-way electromagnetic valve II 102, the servo motor I, the servo motor II, the push rod motor I504, the distance sensor, the infrared obstacle avoidance sensor, the touch sensor module and the microprocessor are electrically connected.
The working principle and the using method are as follows:
presetting:
the upper part of the adjustable pressing seat 402 is adjusted according to the shape of the workpiece, and parts with different specifications are installed through the positioning pin holes.
The sensing position-limiting strip 602 is adjusted to a proper position (generally, the maximum stroke end of the movable carrier plate) by adjusting the screw rod three.
And (4) carrying out no-load test operation on the equipment, adjusting the position of the detection block 604 according to the shape of the workpiece, and adjusting the position of the movable end on the clamping base.
The work is as follows:
the workpiece to be assembled is placed on a movable support plate (generally a cuboid plastic plate, and a corresponding fixing groove is formed in the cuboid plastic plate).
The bearing to be assembled is placed on the adjusting clamping base, and the electromagnet adsorbs the bearing to be assembled, so that the position of the bearing to be assembled is ensured not to deviate.
The movable carrier plate is placed on the second roller shaft 502, the distance sensor outputs signals to the microprocessor, the microprocessor outputs signals to the second servo motor, the second servo motor is started to drive the movable carrier plate to a preset position, the distance sensor outputs signals to the microprocessor again, the microprocessor outputs signals to the first push rod motor 504, the first push rod motor 504 is started to enable the weighing panel 505 to move upwards, the roller 506 is higher than the first roller shaft 501 and the second roller shaft 502, the microprocessor outputs signals to the starting devices of the power oil cylinder 401 and the power air cylinder 301 in a delayed mode, and the power oil cylinder 401 and the power air cylinder 301 start a pressing process.
After the pressing procedure is completed, the power oil cylinder 401 and the power air cylinder 301 are reset, the microprocessor outputs a signal to the first servo motor, and the first servo motor is started, so that the assembled workpiece leaves.
In this process, the ram 401 is often operated over distance due to the complexity of the workpiece and the association with other components, as shown in fig. 11. At this time, if the power cylinder 301 is still operated in the extended state, since the thrust of the power cylinder 401 is several tens times that of the power cylinder 301, the piston of the power cylinder 301 is forcibly retracted, resulting in cylinder burst damage.
In the invention, when the power cylinder 401 runs at an over-distance, the infrared obstacle avoidance sensor outputs a signal to the microprocessor, the microprocessor outputs a signal to the cylinder protection system, the two-position five-way solenoid valve I101 is electrified, the two-position five-way solenoid valve II 102 is powered off, and the power cylinder 301 enters a third working condition.
The gas enters the atmosphere from the A gas outlet pipe 1015 of the first two-position five-way electromagnetic valve to the second A gas outlet pipe 1025 of the second two-position five-way electromagnetic valve (the air pump does not need to be closed, the time is saved, and the service life of the air pump is prolonged).
And the gas on one side of the piston flows out from the gas outlet pipe 1024 of the two-position five-way electromagnetic valve II B to the gas outlet pipe 1022 of the two-position five-way electromagnetic valve II 01.
Gas on the other side of the piston flows out from the gas outlet pipe 1015 of the two-position five-way electromagnetic valve A to the gas outlet pipe 1013 of the two-position five-way electromagnetic valve 02.
The air at the two ends of the piston is in an open state, the piston can be rapidly decompressed, the power cylinder 301 cannot be damaged under the force applied by the power oil cylinder 401, the cylinder explosion probability is obviously reduced, and the service life of the cylinder is prolonged.
In addition, when the oil cylinder 701 exceeds the specified stroke (or reaches the maximum specified stroke), the power cylinder immediately enters a third working condition (namely, the protection system is regulated and controlled according to software and an oil cylinder operation rule). And converting into a free working state. Therefore, complex control programs such as various sensors, PLC and the like can be saved.
The cost is obviously reduced, and the cylinder explosion probability can be further reduced by matching the two methods.
Example 3 referring to fig. 12-13, under the control of a two-position five-way solenoid valve, if a common cylinder rod is electrified, the common cylinder rod is retracted after the electrification, and vice versa, and two working states, namely the extended state and the retracted state, the common cylinder rod is in a stressed state, as shown in fig. 12.
In FIG. 12, A, B represents the inlet and outlet of a conventional cylinder I802 or two-position five-way solenoid valve III 801, and if A is the inlet, B is the outlet; if A is the air outlet, B is the air inlet. P is the compressed air inlet and O1 and O2 are the exhaust, typically leading to the atmosphere through the muffler.
The left side of the figure 12 shows the three 801 power-off states of the two-position five-way electromagnetic valve, and P-A and B-O1 are communicated respectively; P-B and A-O2 were blocked separately. The right side of FIG. 12 is the three 801 energized state of the two-position, five-way solenoid valve with P-A and B-O1 blocked respectively; P-B and A-O2 are on, respectively.
The protection system suitable for the cylinder comprises the two-position five-way electromagnetic valve and the common cylinder, wherein the two-position five-way electromagnetic valves are adopted to control the common cylinder, so that the common cylinder can be in a free state without stress except for the two stressed working states. The unstressed free state means that two air ports A and B of a common cylinder are communicated with the atmosphere, and a piston of the common cylinder cannot be acted by a compressed air source.
Under the working condition, in the stroke of the common cylinder, the common cylinder rod is subjected to huge reverse acting force, and the common cylinder and the air circuit element cannot be damaged.
The invention is used for absorbing the reverse displacement caused by the unbalance of the two oil cylinders, and is more convenient, more economical and safer compared with the traditional servo control system.
The structural principle of the invention is shown in fig. 13, and fig. 13 is also an innovative point of the patent.
A two-position five-way electromagnetic valve A901 and a two-position five-way electromagnetic valve B902 are adopted to control a common air cylinder II 903. The port A of the two-position five-way electromagnetic valve A901 is closed by a choke, and the port B and the port P of the two-position five-way electromagnetic valve A901 are communicated with the port B of the common cylinder II 903 and the port B of the two-position five-way electromagnetic valve B902 respectively; the port of the two-position five-way electromagnetic valve B902A is connected with the port of a second common air cylinder 903A, and the port of the two-position five-way electromagnetic valve B902P is connected with a compressed air source (such as an air pump).
As shown in fig. 13, three operating states of the normal cylinder two 903 can be realized by controlling the energization states of the two-position five-way solenoid valve a 901 and the two-position five-way solenoid valve b 902, respectively. Fig. 13 shows the extended state on the left, the free state in fig. 13, and the retracted state on the right in fig. 13.
An A port of a second common cylinder 903 in a free state, A-A-O2-atmosphere; port B, B-O1-atmosphere, compressed air source is blocked at port a of two-position five-way solenoid valve a 901. The piston of the second ordinary cylinder 903 is not subjected to the acting force of the compressed air source.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
The parts not involved in the invention are realized by adopting the prior art.
Claims (9)
1. A protection system for a cylinder, comprising:
the device comprises a main control mechanism, a sub-control mechanism and a protection main body;
an air outlet pipe of the main control mechanism is arranged on an air inlet of the sub-control mechanism; the other air outlet pipe of the main control mechanism is arranged on an air port of the protection main body; an air outlet pipe of the sub-control mechanism is arranged on the other air port of the protection main body;
the main control mechanism is a first two-position five-way electromagnetic valve, and an air outlet pipe A of the first two-position five-way electromagnetic valve is arranged on an air port on the right side of the air cylinder; an air outlet pipe B of the two-position five-way electromagnetic valve is arranged on the sub-control mechanism;
the sub-control mechanism is a two-position five-way electromagnetic valve II, an air inlet of the two-position five-way electromagnetic valve II is fixedly connected with an air outlet pipe B of the two-position five-way electromagnetic valve I through a connecting pipe, and the air outlet pipe of the two-position five-way electromagnetic valve II is arranged on an air port on the left side of the air cylinder.
2. A method for using a protection system for a cylinder according to claim 1, comprising the following steps:
when the cylinder is in a non-acting state, the first two-position five-way electromagnetic valve is powered on, and the second two-position five-way electromagnetic valve is powered off;
the force application gas flows into the atmosphere from the gas outlet pipe A of the first two-position five-way electromagnetic valve to the gas outlet pipe A of the second two-position five-way electromagnetic valve;
gas on one side of the piston flows into the atmosphere from a gas outlet pipe of the two-position five-way electromagnetic valve II B to a gas outlet pipe 01;
the gas on the other side of the piston flows into the atmosphere from a gas outlet pipe A of a two-position five-way electromagnetic valve to a 02 gas outlet pipe.
3. A protection system for a cylinder, comprising:
the device comprises a main body frame, a counter-pressure mechanism, a cylinder protection system, a conveying mechanism and an intelligent control mechanism;
the main body frame comprises a base and a stand;
the opposite pressing mechanism comprises an air cylinder pressing device and an oil cylinder pressing device;
the cylinder pressing device comprises a power cylinder and a first pressing frame;
the power cylinder is arranged on the upper bottom plate of the Z-shaped cylinder hollow container through the mounting frame and is positioned on the left side of the rectangular through hole I; the movable end of the power cylinder is provided with a first pressing frame;
the first press fit frame comprises an adjusting clamping base and an adsorption table;
the adjusting and clamping base comprises a cross-shaped platform, an adjusting screw rod I and a buffer pad;
the cross-shaped platform is arranged at the movable end of the power cylinder, a positioning block is arranged on the right side surface of the cross-shaped platform, adjusting screw holes are formed in the positioning block, adjusting screws are arranged in the adjusting screw holes, and a cushion pad is arranged at one end of the first adjusting screw;
the adsorption platform is an inverted cylindrical container, the inverted cylindrical container is arranged on the cross-shaped platform, and an electromagnet is arranged in the inverted cylindrical container;
the oil cylinder pressing device comprises a power oil cylinder and a pressing frame II;
the cylinder protection system comprises a main control mechanism and a sub-control mechanism;
the conveying mechanism comprises an input device, an output device and an auxiliary transmission device;
the intelligent control mechanism comprises a limit control sensing device and an offside detection sensing device.
4. A protection system for a cylinder according to claim 3, characterized in that:
the power oil cylinder is arranged on the upper bottom plate of the Z-shaped column hollow container through the mounting frame and is positioned on the right side of the rectangular through hole II; the movable end of the power cylinder is provided with a second pressing frame;
the second pressing frame comprises an adjustable pressing seat and a support plate pushing frame;
the adjustable pressing seat is a cuboid plate, the lower bottom surface of the adjustable pressing seat is arranged at the movable end of the power cylinder, and the adjustable pressing seat is provided with a positioning pin hole;
the support plate pushing frame comprises a fixed strip and a movable strip;
the fixed strip is arranged on the adjustable pressing seat through an L-shaped mounting frame, the fixed strip is provided with a second adjusting screw rod, and one end of the second adjusting screw rod is arranged on the movable strip through a rolling bearing;
the movable strip is provided with a square open through groove.
5. A protection system for a cylinder according to claim 3, characterized in that:
the base is a cuboid I, a rack is arranged above the base, and the rack is a Z-shaped column hollow container; the upper bottom plate of the Z-shaped column hollow container is provided with a rectangular through hole I, a rectangular through hole II, a rectangular through hole III and a rectangular groove I; the rectangular through hole I and the rectangular through hole II are respectively positioned on the left side and the right side of the upper bottom plate and are parallel to each other; the rectangular through hole III is positioned between the rectangular through hole I and the rectangular through hole II; the first rectangular groove is positioned behind the second rectangular through hole.
6. A protection system for a cylinder according to claim 3, characterized in that:
the input device comprises a first roll shaft and a first servo motor;
the first roll shaft is arranged in the second rectangular through hole through a mounting frame, and one end of the first roll shaft is in transmission connection with the servo motor;
the output device comprises a second roll shaft and a second servo motor;
the second roll shaft is arranged in the first rectangular through hole through a mounting frame, and one end of the second roll shaft is in transmission connection with the second servo motor.
7. A protection system for a cylinder according to claim 3, characterized in that:
the auxiliary transmission device comprises a fixed structure and a movable structure;
the fixing structure comprises a third roll shaft, and the third roll shaft is arranged in the third rectangular through hole through an installation frame;
the movable structure comprises a first push rod motor, a weighing panel and a roller;
the first push rod motor is arranged on the lower bottom plate of the Z-shaped cylinder hollow container, and the movable end of the first push rod motor is provided with a weighing panel;
the upper bottom surface of the weighing panel is provided with rollers through a mounting rack; the weighing panel is positioned below the first rectangular through hole, the second rectangular through hole and the third rectangular through hole;
the gyro wheel is located rectangle through-hole one and rectangle through-hole two belows respectively, sets up the stopper on the panel upper bottom surface of weighing, and the stopper is located the gyro wheel outside, and the stopper is higher than the gyro wheel height.
8. A protection system for a cylinder according to claim 3, characterized in that:
the limit control induction device comprises a positioning strip and an induction limit strip;
the positioning strip is arranged on an upper bottom plate of the Z-shaped cylindrical hollow container, the positioning strip is provided with a third adjusting screw rod, and one end of the third adjusting screw rod is arranged on the induction limiting strip through a rolling bearing; a distance sensor is arranged on the lower bottom surface of the induction limit strip;
the offside detection sensing device comprises a fixed block and a detection block;
the fixed block is arranged in the rectangular groove I, the fixed block is provided with an adjusting screw rod IV, and one end of the adjusting screw rod IV is arranged on the detection block through a rolling bearing;
an infrared obstacle avoidance sensor is arranged on the upper bottom surface of the detection block; the position of the infrared obstacle avoidance sensor is higher than the limiting control induction device; a microprocessor is arranged in the Z-shaped cylinder hollow container, and a touch sensor module is arranged on the outer side wall of the Z-shaped cylinder hollow container.
9. A method for using a protection system for a cylinder according to claim 3, comprising the following steps:
step one, presetting the operation procedures of the device,
an operator adjusts the adjustable upper part of the pressing seat according to the shape of the workpiece, and installs parts with different specifications through the positioning pin holes;
an operator adjusts the induction limiting strip to a proper position through the adjusting screw rod III;
carrying out no-load test operation on the equipment, adjusting the position of the detection block according to the shape of the workpiece, and adjusting the position of a movable end on the clamping base;
step two, working, namely performing work,
placing a workpiece to be assembled on the movable carrier plate;
the bearing to be assembled is placed on the adjusting and clamping base, and is adsorbed by the electromagnet, so that the position of the bearing to be assembled is prevented from deviating;
placing a movable carrier plate on a second roll shaft, outputting a signal to a microprocessor by a distance sensor, outputting a signal to a second servo motor by the microprocessor, starting the second servo motor to drive the movable carrier plate to a preset position, outputting a signal to the microprocessor again by the distance sensor, outputting a signal to a first push rod motor by the microprocessor, starting the first push rod motor to move a weighing panel upwards, enabling a roller to be higher than the first roll shaft and the second roll shaft, outputting a signal to a starting device of a power oil cylinder and a power air cylinder in a delayed manner by the microprocessor, and starting a pressure alignment process by the power oil cylinder and the power air cylinder;
after the pressing procedure is finished, the power oil cylinder and the power air cylinder are reset, the microprocessor outputs a signal to the servo motor I, and the servo motor I is started to enable the assembled workpiece to leave;
step three, protecting the materials,
when the power cylinder runs over a distance, the infrared obstacle avoidance sensor outputs a signal to the microprocessor, the microprocessor outputs a signal to the cylinder protection system, the two-position five-way electromagnetic valve I is powered on, the two-position five-way electromagnetic valve II is powered off, and the power cylinder enters a third working condition;
the gas enters the atmosphere from the gas outlet pipe A of the first two-position five-way electromagnetic valve to the gas outlet pipe A of the second two-position five-way electromagnetic valve;
gas on one side of the piston flows out from a gas outlet pipe of the two-position five-way electromagnetic valve II B to a gas outlet pipe of the two-position five-way electromagnetic valve II 01;
the gas on the other side of the piston flows out from a gas outlet pipe A of the two-position five-way electromagnetic valve I to a gas outlet pipe 02 of the two-position five-way electromagnetic valve I;
the gas at the two ends of the piston is in an open state, the piston can quickly release pressure, and the power cylinder cannot be damaged under the force applied by the power oil cylinder, so that the cylinder explosion probability is obviously reduced, and the service life of the cylinder is prolonged;
when the oil cylinder exceeds the specified stroke, the power cylinder can be adjusted to the third working condition immediately after the pressing is finished according to software, and the power cylinder is converted into a free working state, so that the cylinder is protected.
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| CN202110328153.9A CN112983928B (en) | 2021-03-26 | 2021-03-26 | Protection system suitable for cylinder |
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| CN202110328153.9A CN112983928B (en) | 2021-03-26 | 2021-03-26 | Protection system suitable for cylinder |
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| CN112983928B CN112983928B (en) | 2023-06-30 |
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| CN102806514A (en) * | 2012-07-31 | 2012-12-05 | 濮阳贝英数控机械设备有限公司 | High-pressure and low-pressure automatic control circuit for oilstone of pneumatic super-finishing machine and working method of automatic control circuit |
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