CN110630574A

CN110630574A - Speed reduction device, cylinder system and control method thereof

Info

Publication number: CN110630574A
Application number: CN201910837164.2A
Authority: CN
Inventors: 邢映彪; 何俊华; 廖晓亮; 邵亮亮; 倪晓生
Original assignee: Guangzhou Tongda Auto Electric Co Ltd
Current assignee: Guangzhou Tongda Auto Electric Co Ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2019-12-31

Abstract

The invention discloses a speed reducing device, an air cylinder system and a control method of the speed reducing device. When the piston rod moves to a certain position, the auxiliary part arranged on the piston rod can be sensed by the sensing part, the sensing part can send a signal at the moment, the speed of the piston rod is reduced by the speed reduction assembly, the speed reduction device can control the motion speed of the piston rod, and the piston rod is prevented from impacting the cylinder greatly due to the fact that the piston rod cannot decelerate at the tail end of the stroke in time, so that the cylinder can be protected, and the service life of the cylinder is prolonged.

Description

Speed reduction device, cylinder system and control method thereof

Technical Field

The invention relates to the technical field of cylinder equipment, in particular to a speed reducing device, a cylinder system and a control method of the speed reducing device.

Background

The control system and the actuating mechanism of the traditional pneumatic system are very simple, each cylinder can complete the switching of air paths only by being provided with one electromagnetic valve to perform motion control, but the moving speed of a piston rod of the cylinder at the tail end of a stroke is large, the impact force on a piston end cover is large, and the service life of the cylinder can be influenced.

Disclosure of Invention

Based on the above, the present invention provides a reduction gear, a cylinder system and a control method thereof, which can improve the service life, and overcome the defects of the prior art.

The technical scheme is as follows:

the utility model provides a decelerator, includes sensing assembly and speed reduction subassembly, sensing assembly includes auxiliary member and response piece, the auxiliary member is used for setting up on the piston rod of cylinder, the response piece with speed reduction subassembly electric connection works as the response piece senses during the auxiliary member, the response piece is used for controlling speed reduction subassembly reduces the speed of piston rod.

When the piston rod moves to a certain position, the auxiliary part arranged on the piston rod can be sensed by the sensing part, the sensing part can send a signal at the moment, the speed of the piston rod is reduced by the speed reduction assembly, the speed reduction device can control the motion speed of the piston rod, and the piston rod is prevented from impacting the cylinder greatly due to the fact that the piston rod cannot decelerate at the tail end of the stroke in time, so that the cylinder can be protected, and the service life of the cylinder is prolonged.

In one embodiment, the speed reduction device further includes a controller, the speed reduction assembly includes a switch valve and a damping valve, the switch valve and the damping valve are both used for being communicated with the same air port of the air cylinder, the sensing element is electrically connected with the switch valve through the controller, and when the sensing element senses the auxiliary element, the controller is used for receiving a signal of the sensing element and controlling the switch valve to be closed.

In one embodiment, the reduction gear further includes a two-position five-way solenoid valve, the two-position five-way solenoid valve includes a first working port, a second working port, a first exhaust port, a second exhaust port and an inlet port, the first working port and the second working port are respectively used for being communicated with two air ports of the air cylinder, and the switch valve and the damping valve are respectively communicated with the first exhaust port and the second exhaust port.

In one embodiment, the reduction gear further includes a first three-way joint and a second three-way joint, two ports of the first three-way joint are respectively communicated with the first discharge port and the second discharge port, two ports of the second three-way joint are respectively communicated with the on-off valve and the damping valve, and the other port of the first three-way joint is communicated with the other port of the second three-way joint.

In one embodiment, the above speed reducer further comprises a filter valve, the filter valve being in communication with the inlet port.

In one embodiment, the auxiliary member is a magnetic induction material, and the induction member is a magnetic induction switch.

An air cylinder system comprises an air cylinder and the speed reducing device, wherein the auxiliary part is arranged on a piston rod of the air cylinder.

When the piston rod moves to a certain position, the auxiliary part arranged on the piston rod can be sensed by the sensing part, the sensing part can send a signal at the moment, the speed of the piston rod is reduced by the speed reduction assembly, the moving speed of the piston rod can be controlled by the air cylinder system, the piston rod is prevented from impacting the air cylinder greatly due to the fact that the piston rod cannot decelerate at the tail end of a stroke in time, therefore, the air cylinder can be protected, and the service life of the air cylinder is prolonged.

In one embodiment, the number of the sensing members is at least two, when the piston rod moves to one end of the stroke, one of the sensing members is arranged opposite to the auxiliary member, and when the piston rod moves to the other end of the stroke, the other sensing member is arranged corresponding to the auxiliary member.

In one embodiment, the part of the piston rod, which is located outside the cylinder body of the cylinder, is a mounting part, and the auxiliary part is arranged on the mounting part.

A control method of an air cylinder system comprises an air cylinder, a sensing assembly and a speed reducing assembly, wherein the sensing assembly comprises a sensing piece and an auxiliary piece, the speed reducing assembly comprises a switch valve and a damping valve, the auxiliary piece is arranged on a piston rod of the air cylinder, the sensing piece is used for sensing the auxiliary piece, the switch valve and the damping valve are communicated with the same air port of the air cylinder, and the switch valve is normally opened, and the control method comprises the following steps:

when the sensing piece senses the auxiliary piece on the piston rod, a position signal is output;

and the switch valve receives the position signal and closes, so that the gas in the cylinder passes through the damping valve.

According to the control method of the air cylinder system, when the sensing part senses the auxiliary part, the position signal is output, the position signal can control the switch valve to be closed, at the moment, the air exhaust or air intake of the air cylinder is controlled by the damping valve, the damping valve can damp the circulation of air, the air passing speed is reduced, the moving speed of the piston rod can be reduced, the impact force of the piston or the piston rod on the end cover of the air cylinder is reduced, and the service life of the air cylinder is prolonged.

Drawings

FIG. 1 is a first schematic structural diagram of a cylinder system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a cylinder system according to an embodiment of the present invention.

Description of reference numerals:

100. the device comprises a sensing assembly, 110, an auxiliary assembly, 120, a sensing assembly, 200, a speed reduction assembly, 210, a switch valve, 220, a damping valve, 400, a two-position five-way electromagnetic valve, 310, a first three-way connector, 320, a second three-way connector, 500, a filter valve, 10, an air cylinder, 11, a piston rod, 11a, an installation part, 12, an end cover, 13 and a piston.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

As shown in fig. 1 and 2, an embodiment discloses a deceleration device, which includes a sensing component 100 and a deceleration component 200, wherein the sensing component 100 includes an auxiliary component 110 and a sensing component 120, the auxiliary component 110 is configured to be disposed on a piston rod 11 of an air cylinder 10, the sensing component 120 is electrically connected to the deceleration component 200, and when the sensing component 120 senses the auxiliary component 110, the sensing component 120 is configured to control the deceleration component 200 to reduce a speed of the piston rod 11.

When the piston rod 11 moves to a certain position, the speed reducer can sense the auxiliary element 110 arranged on the piston rod 11 through the sensing element 120, and the sensing element 120 can send a signal to enable the speed reducer assembly 200 to reduce the speed of the piston rod 11, so that the speed reducer can control the movement speed of the piston rod 11, and prevent the piston rod 11 from having larger impact on the cylinder 10 due to the fact that the piston rod 11 cannot decelerate at the tail end of the stroke in time, the cylinder 10 can be protected, and the service life of the cylinder 10 can be prolonged.

In one embodiment, as shown in fig. 1 and 2, the deceleration device further includes a controller, the deceleration component 200 includes a switch valve 210 and a damping valve 220, the switch valve 210 and the damping valve 220 are both used for communicating with one of the air ports of the cylinder 10, the sensing element 120 is electrically connected to the switch valve through the controller, and when the sensing element 120 senses the auxiliary element 110, the controller is used for receiving a signal of the sensing element 120 and controlling the switch valve 210 to close. Because the damping valve 220 has an effect of obstructing gas, when the auxiliary element 110 on the piston rod 11 is not sensed by the sensing element 120, the gas in the cylinder 10 flows through the switch valve 210 through the gas port, when the sensing element 120 senses the auxiliary element 110, the sensing element 120 sends a signal to close the switch valve 210, at this time, the gas can only flow through the damping valve 220, but the damping valve 220 can increase the exhaust damping of the gas, so that the exhaust speed is reduced, and further the moving speed of the piston rod 11 is reduced, so that the impact force of the piston rod 11 on the cylinder end cover 12 can be reduced, and the service life of the cylinder 10 can be prolonged.

Alternatively, the on-off valve 210 is a direct-acting valve, and the on-off valve 210 is kept in a normally open state, and when the sensing element 120 senses the tape assistant 110, the sensing element 120 outputs a signal to control the on-off valve 210 to close.

In other embodiments, the deceleration assembly 200 also includes a power supply circuit, a first electromagnet and a second electromagnet, the power supply circuit is used for supplying power to the first electromagnet and the second electromagnet, the power supply circuit is provided with a switch, the sensing element 120 is electrically connected to the switch, and the switch is kept in a normally open state, the sensing element 120 outputs a signal to close the switch, the magnetic poles of the first electromagnet and the second electromagnet after being electrified are the same, the first electromagnet is disposed on the piston 13, and the second electromagnet is disposed on the end cover 12. At this time, when the sensing member 120 senses the belt auxiliary member 110, the sensing member 120 outputs a signal to turn off the switch, the power supply circuit supplies power to make the first electromagnet and the second electromagnet have the same magnetic pole and repel each other, and at this time, the piston 13 receives a repulsive force far away from the end cover 12, so that the moving speed of the piston rod 11 is reduced.

In one embodiment, as shown in fig. 1 and 2, the speed reducer further includes a two-position five-way solenoid valve 300, where the two-position five-way solenoid valve includes a first working port, a second working port, a first exhaust port, a second exhaust port, and an inlet port, the first working port and the second working port are respectively used for communicating with two air ports of the cylinder 10, and the on-off valve 210 and the damping valve 220 are respectively communicated with the first exhaust port or the second exhaust port. The two-position five-way solenoid valve 300 has two operating positions, and the exhaust or intake of the cylinder 10 can be controlled by the two-position five-way solenoid valve 300, so that the piston 13 reciprocates in two opposite directions.

In other embodiments, there are two on-off valves 210 and two damping valves 220, and one set of the on-off valves 210 and the damping valves 220 is communicated with one air port of the cylinder 10. In this case, the two sets of the on-off valves 210 and the damping valve 220 can be used to control the exhaust of the two ports of the cylinder 10.

As shown in fig. 1 and 2, the two-position five-way solenoid valve 300 can switch between left and right operating positions, wherein the reference numerals "a" and "B" respectively represent a first operating port and a second operating port, the reference numeral "P" represents an inlet port, and the reference numerals "R" and "S" respectively represent a first outlet port and a second outlet port.

In one embodiment, as shown in fig. 1 and 2, the reduction gear further includes a first three-way joint 410 and a second three-way joint 420, two interfaces of the first three-way joint 410 are respectively communicated with the first discharge port and the second discharge port, two interfaces of the second three-way joint 420 are respectively communicated with the on-off valve 210 and the damping valve 220, and the other interface of the first three-way joint 410 is communicated with the other interface of the second three-way joint 420. The three-way joint can be conveniently installed and connected.

In other embodiments, a four-way joint may be used instead of two three-way joints, and four ports of the four-way joint are respectively communicated with the first discharge port, the second discharge port, the switch valve 210 and the damping valve 220.

In one embodiment, as shown in fig. 1 and 2, the reduction device further includes a filter valve 500, and the filter valve 500 is communicated with the inlet port. The filter valve 500 can filter the gas entering the piston 13, so as to prevent impurities in the gas from affecting the normal operation of the cylinder 10.

Specifically, when the coil on the right side of the two-position five-way electromagnetic valve 300 is electrified, the piston rod 11 of the cylinder 10 starts to retract, and at the moment, the exhaust gas of the cylinder 10 is exhausted through the switch valve 210 and the damping valve 220; when the sensing member 120 senses the auxiliary member 110, the exhaust port of the switch valve 210 is closed, and at this time, the exhaust gas of the cylinder 10 can be exhausted only through the damping valve 220, and the exhaust gas damping is increased, so that the exhaust gas speed is reduced, the retraction speed of the cylinder 10 is reduced, and the impact force applied to the cylinder 10 is reduced; or

When the coil on the left side of the two-position five-way electromagnetic valve 300 is electrified, the piston rod 11 of the cylinder 10 starts to extend, and at the moment, the exhaust gas of the cylinder 10 is exhausted through the switch valve 210 and the damping valve 220; when the sensing member 120 senses the auxiliary member 110, the exhaust port of the switch valve 210 is closed, and at this time, the exhaust gas of the cylinder 10 can be exhausted only through the damping valve 220, and the exhaust gas damping is increased, so that the exhaust speed is reduced, the extending speed of the cylinder 10 is reduced, and the impact force applied to the cylinder 10 is reduced.

In one embodiment, the auxiliary element 110 is a magnetically sensitive material, and the sensing element 120 is a magnetically sensitive switch. When the auxiliary member 110 moves to the sensing range of the sensing member 120, the sensing member 120 can sense the auxiliary member 110 and output a signal, so that the gas flows through the damping valve 220, thereby reducing the moving speed of the piston rod 11.

Specifically, the auxiliary 110 is a magnet.

In other embodiments, the sensing element 120 is a position sensor, and the sensing element 120 can output a signal when the auxiliary element 110 moves to the relative position of the sensing element 120. In this case, the sensing member 120 may be an infrared position sensor or an optoelectronic position sensor.

As shown in fig. 1 and fig. 2, an embodiment discloses an air cylinder system, which includes an air cylinder 10 and the above speed reducer, wherein an auxiliary member 110 is disposed on a piston rod 11 of the air cylinder 10.

When the piston rod 11 moves to a certain position, the cylinder system can sense the auxiliary element 110 arranged on the piston rod 11 through the sensing element 120, and at the moment, the sensing element 120 can send a signal to enable the speed reduction assembly 200 to reduce the speed of the piston rod 11, so that the cylinder system can control the movement speed of the piston rod 11, and the piston rod 11 is prevented from having larger impact on the cylinder 10 due to the fact that the piston rod 11 cannot be reduced at the tail end of the stroke in time, the cylinder 10 can be protected, and the service life of the cylinder 10 is prolonged.

In one embodiment, as shown in fig. 2, the number of the sensing members 120 is at least two, one of the sensing members 120 is disposed opposite to the auxiliary member 110 when the piston rod 11 moves to one end of the stroke, and the other sensing member 120 is disposed corresponding to the auxiliary member 110 when the piston rod 11 moves to the other end of the stroke. In the above-mentioned structure, no matter which end of piston 13 removal to cylinder 10, auxiliary member 110 and output signal can all be sensed to response piece 120, makes speed reduction assembly 200 reduce the translation rate of piston rod 11, can be better prevent that piston rod 11 from causing the impact to end cover 12, protection cylinder 10, improvement cylinder 10's life.

Optionally, two sensors are disposed on the piston rod 11, the sensing element 120 is disposed between the two sensors, the sensors are electrically connected to the controller, the two sensors are also used for sensing the auxiliary element 110, when the sensors sense the auxiliary element 110, the sensors output a recovery signal to the controller, and the controller controls the on-off valve 210 to open. Specifically, when the piston 13 moves to the end of its stroke, the sensor senses the auxiliary. The piston 13 moves to a position close to the end cap 12 at this time, and then the piston 13 is moved in a reverse direction, and the on-off valve 210 is opened at this time to facilitate the movement of the piston 13.

In one embodiment, as shown in fig. 1 and 2, a portion of the piston rod 11 located outside the cylinder body of the cylinder 10 is a mounting portion 11a, and the auxiliary member 110 is disposed on the mounting portion 11 a. At this time, the auxiliary member 110 and the sensing member 120 are convenient to install, and the existing cylinder 10 can be directly modified, so that the cost is reduced.

In one embodiment, a cushion pad is provided at the end cap 12 of the cylinder 10. In this case, the cushion effect can be improved by the cushion pad, and the end cap 12 can be further prevented from being impacted.

Optionally, the cushion is a rubber material.

The embodiment discloses a control method of an air cylinder system, the air cylinder system comprises an air cylinder 10, a sensing assembly 100 and a speed reducing assembly 200, the sensing assembly 100 comprises a sensing part 120 and an auxiliary part 110, the speed reducing assembly 200 comprises a switch valve 210 and a damping valve 220, the auxiliary part 110 is arranged on a piston rod 11 of the air cylinder 10, the sensing part 120 is used for sensing the auxiliary part 110, the switch valve 210 and the damping valve 220 are both communicated with the same air port of the air cylinder 10, and the switch valve 210 is normally open, and the control method comprises the following steps:

when the sensing member 120 senses the auxiliary member 110 on the piston rod, a position signal is output;

the on-off valve 210 receives the position signal and closes to allow the gas in the cylinder 10 to pass through the damping valve 220.

According to the control method of the cylinder system, when the sensing element 120 senses the auxiliary element 110, a position signal is output, the position signal can control the switch valve 210 to be closed, at this time, the exhaust or intake of the cylinder 10 is controlled by the damping valve 220, and the damping valve 220 can damp the circulation of gas and reduce the gas passing speed, so that the moving speed of the piston rod 11 can be reduced, the impact force of the piston 13 or the piston rod 11 on the cylinder end cover 12 is reduced, and the service life of the cylinder 10 is prolonged.

Optionally, the outputting the position signal when the sensing element 120 senses the auxiliary element 110 on the piston rod includes the following steps:

when the piston 13 moves to the deceleration position on its stroke, the sensing element 120 senses the auxiliary element 110 and outputs a position signal, where the stroke of the piston is L, the distance between the deceleration position and the middle point of the stroke of the piston is s, and L/2> s ≧ L/4.

At this moment, the power output of the cylinder 10 is not influenced, the moving speed of the piston 13 and the piston rod 11 can be timely reduced, the piston 13 and the piston rod 11 are prevented from impacting the cylinder end cover 12, and the protection effect on the cylinder 10 is good.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a decelerator, its characterized in that includes response subassembly and speed reduction subassembly, the response subassembly includes auxiliary member and response piece, the auxiliary member is used for setting up on the piston rod of cylinder, the response piece with speed reduction subassembly electric connection, when the response piece senses when the auxiliary member, the response piece is used for controlling speed reduction subassembly reduces the speed of piston rod.

2. The deceleration device according to claim 1, further comprising a controller, wherein the deceleration assembly comprises a switch valve and a damper valve, the switch valve and the damper valve are both used for communicating with the same air port of the cylinder, the sensing member is electrically connected with the switch valve through the controller, and when the sensing member senses the auxiliary member, the controller is used for receiving a signal of the sensing member and controlling the switch valve to close.

3. The reduction gear according to claim 2, characterized by further comprising a two-position five-way solenoid valve, the two-position five-way solenoid valve comprising a first working port, a second working port, a first exhaust port, a second exhaust port and an inlet port, the first working port and the second working port being respectively configured to communicate with two air ports of the cylinder, the on-off valve and the damping valve being respectively configured to communicate with the first exhaust port and the second exhaust port.

4. The reduction apparatus according to claim 3, further comprising a first three-way joint and a second three-way joint, wherein two ports of the first three-way joint communicate with the first discharge port and the second discharge port, respectively, two ports of the second three-way joint communicate with the on-off valve and the damping valve, respectively, and the other port of the first three-way joint communicates with the other port of the second three-way joint.

5. A decelerator according to claim 4, further including a filter valve in communication with the inlet port.

6. A decelerator mechanism as claimed in any one of claims 1 to 5, wherein the auxiliary member is magnetically responsive material and the inductive member is a magnetically responsive switch.

7. A cylinder system comprising a cylinder and a reduction unit according to any one of claims 1 to 6, the auxiliary member being provided on a piston rod of the cylinder.

8. The cylinder system according to claim 7, wherein the number of the sensing members is at least two, one of the sensing members is disposed opposite to the auxiliary member when the piston rod moves to one end of the stroke, and the other sensing member is disposed corresponding to the auxiliary member when the piston rod moves to the other end of the stroke.

9. The cylinder system according to claim 7, wherein the portion of the piston rod located outside the cylinder body of the cylinder is a mounting portion on which the auxiliary member is provided.

10. The control method of the air cylinder system is characterized in that the air cylinder system comprises an air cylinder, an induction component and a speed reduction component, the induction component comprises an induction piece and an auxiliary piece, the speed reduction component comprises a switch valve and a damping valve, the auxiliary piece is arranged on a piston rod of the air cylinder, the induction piece is used for inducing the auxiliary piece, the switch valve and the damping valve are communicated with the same air port of the air cylinder, and the switch valve is normally opened, and the control method comprises the following steps: