CN114001174B - Safety pneumatic rotary joint of press - Google Patents
Safety pneumatic rotary joint of press Download PDFInfo
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- CN114001174B CN114001174B CN202111393478.1A CN202111393478A CN114001174B CN 114001174 B CN114001174 B CN 114001174B CN 202111393478 A CN202111393478 A CN 202111393478A CN 114001174 B CN114001174 B CN 114001174B
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- 238000005070 sampling Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 51
- 238000012544 monitoring process Methods 0.000 claims description 46
- 230000003068 static effect Effects 0.000 claims description 24
- 238000013459 approach Methods 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift valves
- F16K31/0627—Lift valves with movable valve member positioned between seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a safe pneumatic rotary joint of a press machine, which comprises a direct-acting balanced normally-open two-position two-way electromagnetic valve, a rotary joint and a pressure switch, wherein the direct-acting balanced normally-open two-position two-way electromagnetic valve comprises a valve core and a valve body, an input port, an exhaust port, an input channel, a sampling hole and a valve cavity are arranged on the valve body, the input port, the exhaust port and the input channel are respectively communicated with the valve cavity, the sampling hole is communicated with the input channel, and the valve core is arranged in the valve cavity in a sliding manner; the rotary joint is connected with the valve body, an output port and an output channel are arranged on the rotary joint, the output channel is communicated with the input channel, and the output port is communicated with the output channel; the pressure switch is connected with the valve body and is used for sending two different state signals of whether compressed air exists or not in the rotary joint. The pneumatic rotary joint has the functions of timely discharging compressed air in the clutch to the atmosphere when the pneumatic rotary joint is damaged and the control system of the press machine generates the fault of a safety accident, and the safety of the press machine is improved.
Description
Technical Field
The invention relates to a pneumatic rotary joint, in particular to a safe pneumatic rotary joint of a press machine.
Background
Pneumatic rotary joints are transitional connection sealing devices that input gaseous media from a static system to a dynamic rotary system.
When the pneumatic rotary joint is used in a press, the pneumatic rotary joint is connected between the safety duplex valve and the clutch, when the pneumatic rotary joint is damaged and loses the rotary function, a pipe connected with the pneumatic rotary joint can be wound and forced to die, so that the pipe can not normally convey compressed gas, the compressed gas in the clutch can not be discharged, and the press is continuously flushed, or the mechanical press is continuously flushed due to the Common Cause of Faults (CCF), and personal injury accidents are easy to occur.
Therefore, a pneumatic rotary joint capable of timely discharging compressed gas in a clutch is needed to solve the problem of continuous flushing of a press.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a safe pneumatic rotary joint of a press machine, which has a timely exhaust function, a signal sending function, and can avoid continuous flushing of the press machine and personal injury accidents. The technical scheme adopted by the invention is as follows:
a safe pneumatic rotary joint of a press comprises
The direct-acting balanced normally open two-position two-way electromagnetic valve comprises a valve core and a valve body, wherein an input port, an exhaust port, an input channel, a sampling hole and a valve cavity are formed in the valve body, the input port, the exhaust port and the input channel are respectively communicated with the valve cavity, the sampling hole is communicated with the input channel, the valve core is slidably arranged in the valve cavity and used for controlling on-off between the input port and the exhaust port, when the valve core slides to a first position, the input port is communicated with the exhaust port, and when the valve core slides to a second position, the input port is not communicated with the exhaust port;
the rotary joint is connected with the valve body, and is provided with an output port and an output channel, the output channel is communicated with the input channel, and the output port is communicated with the output channel and is used for transmitting compressed gas to the clutch; and
the pressure switch is connected to the valve body and used for sending different state signals of the rotary joint, the pressure switch is provided with a vent hole, and the vent hole is communicated with the sampling hole so as to enable compressed gas to enter the pressure switch, and the state signals of the pressure switch are changed by utilizing the pressure of the compressed gas.
Further, a valve port is arranged in the valve cavity, when the valve core moves to the position of the valve port, the valve core is positioned at a second position, and the input port is not communicated with the exhaust port;
the valve cavity is internally provided with a first spring, the first spring is abutted with the valve core, when the valve core moves from a first position to a second position, the first spring is compressed, and when the valve core moves from the second position to the first position, the first spring is reset.
Further, the input channel comprises a first input channel and a second input channel, two ends of the first input channel are respectively communicated with the input port and the second input channel, and the second input channel is communicated with the output channel;
the valve port is arranged at the joint of the valve cavity and the first input channel.
Further, a dry electromagnet is arranged in the valve cavity and used for controlling the position switching of the valve core between the first position and the second position;
the dry electromagnet comprises an electromagnet coil, a static iron core, an ejector rod and a movable iron core, wherein the electromagnet coil is fixed in the valve cavity, the static iron core and the movable iron core are sequentially arranged in the electromagnet coil, the static iron core is fixedly connected with the electromagnet coil, the movable iron core is in sliding connection with the electromagnet coil, and the movable iron core is close to or far from the static iron core by switching on and off the electromagnet coil;
the ejector rod penetrates through the static iron core, the two ends of the ejector rod are respectively connected with the movable iron core and the valve core, when the valve core is in contact with the static iron core, the valve core is in a first position, when the movable iron core approaches the static iron core, the valve core is switched from the first position to a second position under the driving of the ejector rod.
Further, a manual button and a connector are further arranged on the valve body, one end of the manual button is abutted against the movable iron core, the connector is connected with the electromagnet coil, and the connector is used for being connected with a control system of the press machine so as to control the on-off of the electromagnet coil.
Further, the rotary joint comprises a shell, the shell is connected with the valve body, and the output channel is arranged on the shell;
the output channel comprises a first output channel and a second output channel, wherein the first output channel is communicated with the second input channel, the second output channel is communicated with the first output channel, and the output port is communicated with the second output channel.
Further, a second spring, a spring pad, a sliding sleeve, a shaft retainer ring and a connector are sequentially arranged in the second output channel, and one end of the connector extends out of the shell;
the second output channel is internally and sequentially provided with a hole check ring and a bearing, the bearing is connected between the shell and the joint so as to realize the rotation of the joint, and the hole check ring is arranged at one side of the bearing away from the shaft check ring and is connected with the shell so as to fix the bearing;
the output port penetrates through the connector.
Further, the pressure switch comprises a micro switch, a switch seat, a first monitoring channel and a second monitoring channel, wherein the switch seat is connected to the valve body, the vent hole is formed in the switch seat, the first monitoring channel and the second monitoring channel are sequentially arranged in the switch seat, the first monitoring channel is communicated with the second monitoring channel, and the second monitoring channel is communicated with the vent hole;
the first monitoring channel is internally provided with a micro switch, the second monitoring channel is internally provided with a membrane, a push rod and a third spring, one end of the push rod is abutted against the membrane, the other end of the push rod stretches into the first monitoring channel, and the push rod is pushed to approach and contact the micro switch when the membrane is elastically deformed so as to realize reversing of the micro switch;
the third spring is sleeved on the push rod, one end of the third spring is abutted to the switch seat, and when the push rod is close to the micro switch, the third spring is compressed.
Further, a base for blocking the second monitoring channel is arranged on the switch seat, and the base is abutted with the diaphragm so as to fix the position of the diaphragm in the second monitoring channel.
Further, a housing for covering the first monitoring channel is arranged on the switch seat.
The invention has the advantages that:
the utility model has the advantages of pneumatic rotary joint damages and the function of timely discharging compressed air to the atmosphere in the clutch when the trouble that the press control system produced the incident, improve the security of press, utilize the cooperation of straight dynamic balance formula normally open two-position two-way solenoid valve and pressure switch for after rotary joint loses rotatory function, switch on input port and gas vent through the motion of case in the valve pocket, compressed gas is discharged from the gas vent, pressure switch receives compressed gas pressure influence change signal state simultaneously, accomplish the exhaust fault indication, improve the security of press work, avoid the unable discharge of compressed gas to cause even towards the phenomenon, avoid appearing personal injury accident.
Drawings
FIG. 1 is a schematic diagram of the structural composition of the present invention.
Fig. 2 is a first view cross-section of the present invention.
Fig. 3 is a second perspective cross-sectional view of the present invention.
Fig. 4 is a diagram of the normal operation state of the ventilation-proof device of the present invention.
Fig. 5 is a diagram of the ventilation normal operation state of the invention.
Fig. 6 is a security function activation state diagram of the present invention.
In the figure: the device comprises a 1-direct-acting balance type normally-open two-position two-way electromagnetic valve, a 2-rotary joint, a 3-pressure switch, a 101-input port, a 102-exhaust port, a 103-sampling hole, a 104-valve core, a 105-valve body, a 106-valve port, a 107-first spring, a 108-first input channel, a 109-second input channel, a 110-electromagnet coil, a 111-static iron core, a 112-ejector rod, a 113-movable iron core, a 114-manual button, a 115-plug connector, a 201-output port, a 202-shell, a 203-first output channel, a 204-second output channel, a 205-second spring, a 206-spring pad, a 207-sliding sleeve, a 208-shaft retainer ring, a 209-joint, a 210-hole retainer ring, a 211-bearing, a 301-vent hole, a 302-micro-switch, a 303-switch seat, a 304-first monitoring channel, a 305-second monitoring channel, a 306-diaphragm, a 307-push rod, a 308-third spring, a 309-base and a 310-housing.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-3, the invention provides a safe pneumatic rotary joint of a press, which comprises a direct-acting balanced normally open two-position two-way electromagnetic valve 1, a rotary joint 2 and a pressure switch 3.
The direct-acting balanced normally open two-position two-way electromagnetic valve 1 comprises a valve core 104 and a valve body 105, wherein an input port 101, an exhaust port 102, an input channel, a sampling hole 103 and a valve cavity are arranged on the valve body 105, the input port 101, the exhaust port 102 and the input channel are respectively communicated with the valve cavity, the sampling hole 103 is communicated with the input channel, the valve core 104 is slidably arranged in the valve cavity and used for controlling the on-off between the input port 101 and the exhaust port 102, when the valve core 104 slides to a first position, the input port 101 is communicated with the exhaust port 102, and when the valve core 104 slides to a second position, the input port 101 is not communicated with the exhaust port 102;
the rotary joint 2 is connected to the valve body 105, the rotary joint 2 is provided with an output port 201 and an output channel, the output channel is communicated with the input channel, and the output port 201 is communicated with the output channel and is used for transmitting compressed gas to the clutch;
the pressure switch 3 is connected to the valve body 105, and is used for sending two different status signals of whether compressed air exists in the rotary joint 2 or not, a vent 301 is arranged on the pressure switch 3, and the vent 301 is communicated with the sampling hole 103, so that compressed gas enters the pressure switch 3, and the status signal of the pressure switch 3 is changed by using the pressure of the compressed gas.
The control system of the direct-acting balanced normally-open two-position two-way electromagnetic valve 1 and the pressure switch 3 are electrically connected with a press machine, intelligent control is achieved, the control system of the press machine is a PLC controller, and the control system is a technology well known to those skilled in the art and is not described in detail herein.
The first state (normal working state without ventilation), the press is electrified, the valve core 104 of the direct-acting balanced normally open two-position two-way electromagnetic valve 1 is controlled to move from a first position to a second position in the valve cavity immediately through the control system of the press, the communication between the input port 101 and the exhaust port 102 is cut off, at the moment, the pressure switch 3 is reset, and a state signal without compressed air in a rotary joint is sent to the control system of the press; the second state (ventilation normal working state), the rotary joint ventilates, compressed gas enters through the input port 101 and is discharged from the output port 201, meanwhile, a part of compressed gas enters the pressure switch 3 through the sampling hole 103 and the vent hole 301, the pressure switch 3 is reversed under the action of the pressure of the compressed gas, and a state signal of the compressed air in the rotary joint is sent to a control system of the press; in the third state (safety function starting state), the rotary joint loses the rotary function, the direct-acting balance type normally open two-position two-way electromagnetic valve 1 is controlled by a control system of the press to cut off power, the valve core 104 moves from the second position to the first position in the valve cavity, the input port 101 is communicated with the exhaust port 102, compressed gas is discharged to the atmosphere from the exhaust port 102, the pressure of the compressed gas entering the pressure switch 3 is insufficient, the pressure switch 3 is reset, and a state signal without compressed air in the rotary joint is sent to the control system of the press, so that the purposes of timely exhausting and signal indication are achieved, continuous flushing of the press is avoided, and personal injury accidents are avoided.
In the application, a valve port 106 is arranged in the valve cavity, when the valve core 104 moves to the position of the valve port 106, the valve core 104 is in a second position, and the input port 101 is not communicated with the exhaust port 102; the valve port 106 limits the movement travel of the valve core 104 and also facilitates positioning the communication between the inlet 101 and the outlet 102.
A first spring 107 is arranged in the valve cavity, the first spring 107 is in abutting connection with the valve core 104, when the valve core 104 moves from the first position to the second position, the first spring 107 is compressed, and when the valve core 104 moves from the second position to the first position, the first spring 107 is reset; after the direct-acting balanced normally open two-position two-way electromagnetic valve 1 is powered off by the elastic force generated by the compression of the first spring 107, the valve core 104 is pushed to the first position from the second position under the action of the elastic force, so that the reset action is completed.
In some embodiments, the spool 104 is provided at one end with a receiving cavity extending along the valve cavity, and the first spring 107 is disposed within the receiving cavity, thereby limiting the position of the first spring 107.
In this application, to facilitate the installation of the components in the valve body 105, the input channel includes a first input channel 108 and a second input channel 109, two ends of the first input channel 108 are respectively communicated with the input port 101 and the second input channel 109, and the second input channel 109 is communicated with the output channel; the valve port 106 is arranged at the joint of the valve cavity and the first input channel 108, and the sampling hole 103 is communicated with the first input channel 108.
In this application, a dry electromagnet is disposed in the valve cavity to control the position of the valve core 104 between the first position and the second position.
Specifically, the dry electromagnet comprises an electromagnet coil 110, a static iron core 111, a push rod 112 and a movable iron core 113, wherein the electromagnet coil 110 is fixed in a valve cavity, the static iron core 111 and the movable iron core 113 are sequentially arranged in the electromagnet coil 110, the static iron core 111 is fixedly connected with the electromagnet coil 110, the movable iron core 113 is slidably connected with the electromagnet coil 110, and the electromagnet coil 110 is powered on and powered off to enable the movable iron core 113 to be close to or far away from the static iron core 111; the ejector rod 112 penetrates through the static iron core 111, two ends of the ejector rod 112 are respectively connected with the movable iron core 113 and the valve core 104, when the valve core 104 is in contact with the static iron core 111, the valve core 104 is in a first position, when the movable iron core 113 approaches the static iron core 111, and the valve core 104 is switched from the first position to a second position under the driving of the ejector rod 112.
The electromagnet coil 110 is electrified to generate an electromagnetic field to enable the movable iron core 113 to approach the static iron core 111, so that the movable iron core 113 drives the valve core 104 to move from a first position to a second position through the ejector rod 112 to block the valve port 106, and the communication between the input port 101 and the exhaust port 102 is cut off, and the elasticity of the first spring 107 is increased to prepare for ventilation of the rotary joint; when the electromagnet coil 110 is powered off, the electromagnetic field disappears, and the movable iron core 113, the ejector rod 112 and the valve core 104 are reset under the action of the elastic force of the first spring 107, so that the valve core 104 moves from the second position to the first position, the valve port 106 is opened, the input port 101 and the exhaust port 102 are conducted, and exhaust is realized.
In addition, the valve body 105 is further provided with a manual button 114 and a connector 115, one end of the manual button 114 abuts against the movable iron core 113, the connector 115 is connected with the electromagnet coil 110, and the connector 115 is used for being connected with a control system of the press machine so as to control the on-off of the electromagnet coil 110.
In the present application, the rotary joint 2 includes a housing 202, the housing 202 is connected to the valve body 105, and the output passage is provided on the housing 202; the output channels include a first output channel 203 and a second output channel 204, the first output channel 203 is communicated with the second input channel 109, the second output channel 204 is communicated with the first output channel 203, and the output port 201 is communicated with the second output channel 204.
In some embodiments, the first output channel 203 and the second output channel 204 are disposed vertically.
The specific structure of the rotary joint 2 is as follows: a second spring 205, a spring pad 206, a sliding sleeve 207, a shaft retainer ring 208 and a joint 209 are sequentially arranged in the second output channel 204, and one end of the joint 209 extends out of the housing 202; a hole check ring 210 and a bearing 211 are sequentially arranged in the second output channel 204, the bearing 211 is connected between the housing 202 and the joint 209 to realize rotation of the joint 209, and the hole check ring 210 is arranged on one side of the bearing 211 away from the shaft check ring 208 and is connected to the housing 202 to fix the bearing 211; the outlet 201 extends through the connector 209.
The second spring 205 provides an axial floating space for the joint 209, and the friction between the joint 209 and the sliding sleeve 207 is reduced by the shaft retainer ring 208, so that the joint 209 can rotate more smoothly.
In this application, the pressure switch 3 includes a micro switch 302, a switch seat 303, a first monitoring channel 304 and a second monitoring channel 305, the switch seat 303 is connected to the valve body 105, the vent 301 is disposed on the switch seat 303, the first monitoring channel 304 and the second monitoring channel 305 are sequentially disposed in the switch seat 303, the first monitoring channel 304 and the second monitoring channel 305 are communicated, and the second monitoring channel 305 is communicated with the vent 301; the micro switch 302 is arranged in the first monitoring channel 304, the membrane 306, the push rod 307 and the third spring 308 are arranged in the second monitoring channel 305, one end of the push rod 307 is abutted against the membrane 306, the other end of the push rod 307 stretches into the first monitoring channel 304, and the push rod 307 is pushed to approach and contact the micro switch 302 when the membrane 306 is elastically deformed so as to realize reversing of the micro switch 302; the third spring 308 is sleeved on the push rod 307, one end of the third spring 308 abuts against the switch seat 303, and when the push rod 307 approaches the micro switch 302, the third spring 308 is compressed.
The first monitoring channel 304 provides an installation space for the micro switch 302, the second monitoring channel 305 is used for installing the push rod 307 and the membrane 306, when compressed gas enters the second monitoring channel 305 from the vent 301, the pressure of the compressed gas rises to push the membrane 306 to elastically deform, then the push rod 307 is pushed to approach and contact the micro switch 302, the micro switch 303 is reversed, then the signal sent by the pressure switch 3 to the control system of the press machine is changed, and the elastic force of the third spring 308 is increased in the process that the push rod 307 approaches the micro switch 302, so that the push rod 307 is convenient to reset.
In order to facilitate the fixing of the position of the diaphragm 306 in the second monitoring channel 305, so as to generate elastic deformation in a specific direction, the switch seat 303 is provided with a base 309 for blocking the second monitoring channel 305, and the base 309 abuts against the diaphragm 306 to fix the position of the diaphragm 306 in the second monitoring channel 205.
In some embodiments, base 309 is bolted to switch housing 303, facilitating disassembly of base 309, facilitating replacement of diaphragm 306, pushrod 307, and third spring 308.
In order to facilitate the installation and replacement of the microswitch 302, the switch housing 303 is provided with a cover 310 for covering the first monitoring channel 304.
In some embodiments, the housing 310 is bolted to the switch housing 303 and the micro switch 302 is bolted to the switch housing 303.
In addition, this application is through setting up sampling hole 103, first input channel 108, second input channel 109, first output channel 203 and second output channel 204, aim at cooperation casing 202, the assembly positional relationship between switch seat 303 and the valve body 105 for whole rotary joint's structure is compacter, satisfies the position arrangement requirement between inside valve body 105, inside casing 202 and the inside each part of switch seat 303 under the condition that does not influence compressed gas flow, also can simplify the processing procedure of valve body 105, casing 202 and switch seat 303 to a certain extent, reduction in production cost.
The specific working principle of the application is as follows:
the rotary joint is in a first state (namely, the normal working state without ventilation): as shown in fig. 4, when the power supply of the press is turned on, the electromagnet coil 110 in the direct-acting balanced normally open two-position two-way electromagnetic valve 1 is powered on through the control system, after the electromagnet coil 110 is powered on, the movable iron core 113 approaches the static iron core 111 under the action of electromagnetic force, meanwhile, the ejector rod 112 and the valve core 104 are driven to move, the valve core 104 moves from the first position to the second position to abut against the valve port 106, so that the input port 101 is not conducted with the exhaust port 102, the input port 101 and the output port 201 are conducted, the elastic force of the first spring 107 is increased, the micro switch 302 in the pressure switch 3 is in an original state, and a state signal without compressed air in a rotary joint is sent to the control system of the press.
The rotary joint is in the second state (ventilation normal working state): as shown in fig. 5, the compressed gas is input into the input port 101, and enters the clutch through the input port 101, the first input channel 108, the second input channel 109, the first output channel 203, the second output channel 204 and the output port 201, the slide block of the press machine moves normally, and meanwhile, the compressed gas enters the second monitoring channel 305 through the sampling hole 103 and the vent hole 301, the pressure of the compressed gas rises, the diaphragm 306 deforms elastically under the pressure of the compressed gas, the push rod 307 is pushed to approach the micro switch 302, the elastic force of the third spring 308 increases, until the push rod 307 contacts the micro switch 302 to cause the micro switch 302 to change direction, and a state signal of the compressed air in a rotary joint is sent to the control system of the press machine.
The rotary joint is in a third state (safety function starting state), as shown in fig. 6, the rotary joint loses the rotary function, the direct-acting balanced normally open two-position two-way electromagnetic valve 1 is controlled by a control system of the press machine to break, the electromagnet coil 110 breaks down to lose electromagnetic force, the movable iron core 113, the ejector rod 112 and the valve core 104 are reset under the action of the elastic force of the first spring 107, the valve core 104 returns to the first position from the second position and opens the valve port 106, the input port 101 is communicated with the exhaust port 102, compressed gas in the clutch is discharged to the atmosphere through the second output channel 204, the first output channel 203, the second input channel 109, the first input channel 108 and the exhaust port 102, and most of compressed gas entering from the input port 101 is discharged to the atmosphere, meanwhile, the pressure of the compressed gas falls, the push rod 307 is reset under the action of the elastic force of the third spring 308 to be separated from the micro switch 302, the diaphragm 306 is reset under the action of the self elastic force, and the micro switch 302 is restored to the original state, and a state signal without compressed air in the rotary joint is sent to the control system of the press machine.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a safe pneumatic rotary joint of press which characterized in that: comprising
The direct-acting balanced normally open two-position two-way electromagnetic valve (1), the direct-acting balanced normally open two-way electromagnetic valve (1) comprises a valve core (104) and a valve body (105), an input port (101), an exhaust port (102), an input channel, a sampling hole (103) and a valve cavity are arranged on the valve body (105), the input port (101), the exhaust port (102) and the input channel are respectively communicated with the valve cavity, the sampling hole (103) is communicated with the input channel, the valve core (104) is slidably arranged in the valve cavity and used for controlling the on-off between the input port (101) and the exhaust port (102), when the valve core (104) slides to a first position, the input port (101) is communicated with the exhaust port (102), and when the valve core (104) slides to a second position, the input port (101) is not communicated with the exhaust port (102);
the rotary joint (2) is connected with the valve body (105), an output port (201) and an output channel are arranged on the rotary joint (2), the output channel is communicated with the input channel, and the output port (201) is communicated with the output channel and is used for transmitting compressed gas to the clutch; and
the pressure switch (3) is connected to the valve body (105) and is used for sending two different state signals of the compressed gas in the rotary joint (2), a vent hole (301) is arranged on the pressure switch (3), the vent hole (301) is communicated with the sampling hole (103) so as to enable the compressed gas to enter the pressure switch (3), and the state signal of the pressure switch (3) is changed by the pressure of the compressed gas;
the dry type electromagnet is arranged in the valve cavity and comprises an electromagnet coil (110), a static iron core (111), a push rod (112) and a movable iron core (113), wherein the electromagnet coil (110) is fixed in the valve cavity, the static iron core (111) and the movable iron core (113) are sequentially arranged in the electromagnet coil (110), the static iron core (111) is fixedly connected with the electromagnet coil (110), the movable iron core (113) is in sliding connection with the electromagnet coil (110), and the movable iron core (113) is close to or far away from the static iron core (111) due to the on-off of the electromagnet coil (110);
the ejector rod (112) penetrates through the static iron core (111), two ends of the ejector rod (112) are respectively connected with the movable iron core (113) and the valve core (104), when the valve core (104) is in contact with the static iron core (111), the valve core (104) is in a first position, and when the movable iron core (113) approaches the static iron core (111), the valve core (104) is switched from the first position to a second position under the driving of the ejector rod (112);
the valve body (105) is further provided with a manual button (114) and a connector (115), one end of the manual button (114) is abutted against the movable iron core (113), the connector (115) is connected with the electromagnet coil (110), and the connector (115) is used for being connected with a control system of the press machine so as to control the on-off of the electromagnet coil (110).
2. The safety pneumatic rotary joint of a press machine of claim 1, wherein: a valve port (106) is arranged in the valve cavity, when the valve core (104) moves to the valve port (106), the valve core (104) is positioned at a second position, and the input port (101) is not communicated with the exhaust port (102);
a first spring (107) is arranged in the valve cavity, the first spring (107) is in abutting connection with the valve core (104), when the valve core (104) moves from a first position to a second position, the first spring (107) is compressed, and when the valve core (104) moves from the second position to the first position, the first spring (107) is reset.
3. The safety pneumatic rotary joint of a press machine according to claim 2, wherein: the input channel comprises a first input channel (108) and a second input channel (109), two ends of the first input channel (108) are respectively communicated with an input port (101) and the second input channel (109), and the second input channel (109) is communicated with the output channel;
the valve port (106) is arranged at the joint of the valve cavity and the first input channel (108).
4. The safety pneumatic rotary joint of a press machine of claim 1, wherein: the rotary joint (2) comprises a shell (202), the shell (202) is connected to the valve body (105), and the output channel is arranged on the shell (202);
the output channels comprise a first output channel (203) and a second output channel (204), the first output channel (203) is communicated with the second input channel (109), the second output channel (204) is communicated with the first output channel (203), and the output port (201) is communicated with the second output channel (204).
5. The safety pneumatic rotary joint of a press as claimed in claim 4, wherein: a second spring (205), a spring pad (206), a sliding sleeve (207), a shaft retainer ring (208) and a connector (209) are sequentially arranged in the second output channel (204), and one end of the connector (209) extends out of the shell (202);
a hole check ring (210) and a bearing (211) are sequentially arranged in the second output channel (204), the bearing (211) is connected between the shell (202) and the joint (209) to realize the rotation of the joint (209), and the hole check ring (210) is arranged on one side of the bearing (211) away from the shaft check ring (208) and is connected with the shell (202) to fix the bearing (211);
the output port (201) penetrates through the joint (209).
6. The safety pneumatic rotary joint of a press machine of claim 1, wherein: the pressure switch (3) comprises a micro switch (302), a switch seat (303), a first monitoring channel (304) and a second monitoring channel (305), wherein the switch seat (303) is connected to the valve body (105), the vent hole (301) is formed in the switch seat (303), the first monitoring channel (304) and the second monitoring channel (305) are sequentially formed in the switch seat (303), the first monitoring channel (304) is communicated with the second monitoring channel (305), and the second monitoring channel (305) is communicated with the vent hole (301);
a micro switch (302) is arranged in the first monitoring channel (304), a membrane (306), a push rod (307) and a third spring (308) are arranged in the second monitoring channel (305), one end of the push rod (307) is abutted against the membrane (306), the other end of the push rod (307) stretches into the first monitoring channel (304), and the push rod (307) is pushed to be close to and contacted with the micro switch (302) when the membrane (306) is elastically deformed, so that the micro switch (302) is commutated;
the third spring (308) is sleeved on the push rod (307), one end of the third spring (308) is abutted against the switch seat (303), and when the push rod (307) is close to the micro switch (302), the third spring (308) is compressed.
7. The safety pneumatic rotary joint of a press as claimed in claim 6, wherein: the switch seat (303) is provided with a base (309) for blocking the second monitoring channel (305), and the base (309) is abutted with the diaphragm (306) so as to fix the position of the diaphragm (306) in the second monitoring channel (305).
8. The safety pneumatic rotary joint of a press according to claim 6 or 7, characterized in that: the switch seat (303) is provided with a housing (310) for covering the first monitoring channel (304).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111393478.1A CN114001174B (en) | 2021-11-23 | 2021-11-23 | Safety pneumatic rotary joint of press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111393478.1A CN114001174B (en) | 2021-11-23 | 2021-11-23 | Safety pneumatic rotary joint of press |
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| CN114001174A CN114001174A (en) | 2022-02-01 |
| CN114001174B true CN114001174B (en) | 2024-04-05 |
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| WO2021094128A1 (en) * | 2019-11-12 | 2021-05-20 | Nass Magnet Gmbh | Pneumatic valve apparatus for a compressed air device, and transmission-control or clutch system comprising the pneumatic valve apparatus |
| CN214248453U (en) * | 2020-12-25 | 2021-09-21 | 浙江迦南科技股份有限公司 | Rotatable automatic valve opening mechanism |
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2021
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|---|---|---|---|---|
| KR20000011388A (en) * | 1998-07-02 | 2000-02-25 | 다까다 요시유끼 | Manually operated supply and exhaust changeover valve for fluid pressure apparatus |
| CN2613628Y (en) * | 2003-04-30 | 2004-04-28 | 无锡市拓发自控设备厂 | Pneumatic rotation joint |
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| Publication number | Publication date |
|---|---|
| CN114001174A (en) | 2022-02-01 |
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