CN113369709A - Method and system for reducing brake impact of exchange - Google Patents
Method and system for reducing brake impact of exchange Download PDFInfo
- Publication number
- CN113369709A CN113369709A CN202110648944.XA CN202110648944A CN113369709A CN 113369709 A CN113369709 A CN 113369709A CN 202110648944 A CN202110648944 A CN 202110648944A CN 113369709 A CN113369709 A CN 113369709A
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- light curtain
- exchange
- exchange platform
- servo motor
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000004888 barrier function Effects 0.000 claims abstract description 12
- 230000001960 triggered effect Effects 0.000 abstract description 16
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 8
- 238000003698 laser cutting Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
The invention relates to a method and a system for reducing brake impact of an exchange platform, wherein the method comprises the following steps: the method comprises the following steps: arranging an inner layer light curtain surrounding the exposed surface of the exchange platform on the exchange platform; step two: arranging an outer layer light curtain surrounding the inner layer light curtain outside the inner layer light curtain; step three: the barrier shields the outer light curtain, and the function of decelerating the exchange station to stop is started; step four: the barrier shields the inner light curtain and the emergency stop function of the exchange is started. When the light curtain surrounding the exchange platform is shielded and triggered, the outer-layer safety light curtain is necessarily shielded before the inner-layer safety light curtain is shielded by an operator, so that the exchange platform is decelerated and stopped firstly and then is stopped emergently, the safety requirement that the exchange platform is stopped in time after the safety light curtain is shielded can be met, the brake impact generated when the exchange platform is stopped emergently can be reduced, or the brake impact is avoided, and the service life of the transmission structure of the exchange platform is prolonged.
Description
Technical Field
The invention relates to the field of laser cutting machines, in particular to a method and a system for reducing brake impact of an exchange platform.
Background
In the field of planar laser cutting, people have an increasing demand for a structure of a planar laser cutting machine with an exchange workbench in order to improve the processing efficiency and the productivity of equipment. Along with the development of high-power lasers, the laser cutting speed is higher and higher, the requirement of people on the exchange speed of an exchange platform is also higher and higher, the cost of a servo motor is reduced due to the maturity of the domestic brand of the servo motor, and therefore more and more exchange platforms of the planar laser cutting machine in China are driven by the servo motor, so that the exchange speed of the exchange platform is greatly improved. In order to avoid the risk of hurting people during the operation of the exchange, a safety light curtain is generally added on the exposed surface of the exchange for detection and protection. For example, chinese patent publication No. CN210997066U, published as 2020, 7, and 14, discloses a gantry three-dimensional five-axis laser cutting machine, in which a safety light curtain is arranged behind an exchange station, and when the safety light curtain is blocked, the work of the exchange station is stopped promptly, thereby effectively avoiding the occurrence of safety accidents.
However, since the speed of the servo motor of the exchange station is too fast, the work of the exchange station is stopped immediately after the safety light curtain is shielded, that is, the servo motor is stopped immediately, which causes the transmission structure (including the chain and the pin shaft) of the exchange station to be damaged easily due to strong impact.
Disclosure of Invention
The invention provides a method and a system for reducing the brake impact of an exchange platform, aiming at solving the problem that the exchange platform generates strong brake impact after a safety light curtain of a laser cutting machine in the prior art is triggered.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for reducing brake impact of an exchange comprises the following steps:
the method comprises the following steps: arranging an inner layer light curtain surrounding the exposed surface of the exchange platform on the exchange platform;
step two: arranging an outer layer light curtain surrounding the inner layer light curtain outside the inner layer light curtain;
step three: the barrier shields the outer light curtain, and the function of decelerating the exchange station to stop is started;
step four: the barrier shields the inner light curtain and the emergency stop function of the exchange is started.
In the above technical solution, when the outer light curtain is shielded by an obstacle (which may be an operator or any object), the servo motor of the exchange station decelerates to a stop state, and starts to gradually decelerate to stop. If an obstacle blocks the inner layer light curtain in the process of reducing the speed of the servo motor, the servo motor stops immediately. But since the servo motor has already started to decelerate, the brake impact is also smaller because the speed of the servo motor is slower than the initial speed. The outer safety light curtain is necessarily shielded before the inner safety light curtain is shielded by the barrier, so that the exchange station is ensured to be stopped in an emergency after being decelerated and stopped.
Preferably, the inlayer light curtain with distance between the skin light curtain is not less than 30 centimetres, and under this distance, no matter how fast operating personnel's speed, after triggering skin light curtain servo motor all can slow down a period earlier, the inlayer light curtain could be triggered, ensures that the servo motor of switching center has the time of slowing down.
Preferably, the distance between the inner layer light curtain and the outer layer light curtain is 30 centimeters, and the occupied area for constructing the outer layer light curtain is reduced.
The system comprises the exchange platform, at least one inner layer light curtain, a controller, a servo motor for driving the exchange platform to move and an outer layer light curtain, wherein the inner layer light curtain is positioned on the exposed surface of the exchange platform, and the outer layer light curtain is positioned on one side of the inner layer light curtain, which is far away from the exchange platform; the inner layer light curtain, the outer layer light curtain and the servo motor are all electrically connected with the controller; the inner layer light curtain is shielded, and the controller controls the servo motor to stop emergently; the outer layer light curtain is shielded, and the controller controls the servo motor to decelerate to stop. The system may be used to implement the method described above.
In the system, after the outer layer light curtain is shielded and triggered, the electric signal is sent to the signal interface of the servo motor for deceleration until the servo motor is stopped through the controller, so that the servo motor enters a deceleration state. If the servo motor is in the process of decelerating, after the inner layer light curtain is shielded and triggered, an electric signal triggered by the inner layer light curtain is sent to a signal interface of the servo motor for emergency stop through the controller, and the servo motor stops rotating. But since the servo motor has already started to decelerate, the brake impact is also smaller because the speed of the servo motor is slower than the initial speed.
Preferably, the outer layer light curtain surrounds the exposed surface of the inner layer light curtain on the side far away from the exchange station, and an operator can necessarily shield the outer layer safety light curtain before shielding the inner layer safety light curtain, which is equivalent to ensuring that the exchange station is decelerated firstly and then stopped emergently.
Preferably, the inner light curtain comprises a first inner light curtain group, a second inner light curtain group and a third inner light curtain group, which are respectively located on three exposed surfaces of the exchange platform; the outer light curtain includes with first outer light curtain group that first inlayer light curtain group corresponds, the second outer light curtain group that corresponds with second inlayer light curtain group and the outer light curtain group of third that corresponds with third inlayer light curtain group.
Preferably, the distance between the outer layer light curtain and the inner layer light curtain is not less than 30 cm. At the distance, no matter how fast the speed of the operator is, the servo motor can be decelerated for a period of time after the outer light curtain is triggered, and the inner light curtain can be triggered to ensure that the servo motor of the exchange platform has the time for decelerating.
Preferably, the outer light curtain with the distance between the inlayer light curtain is 30 centimetres, reduces and constructs the shared area of outer light curtain.
Preferably, the controller is a PLC controller. A logic control circuit is built in the PLC to realize the function of decelerating to stop of the outer layer light curtain trigger servo motor and the function of emergency stop of the inner layer light curtain trigger servo motor. The method for constructing the logic control circuit is conventional in the art and will not be described in detail here.
Preferably, the inner layer light curtain and the outer layer light curtain are fixed on the bottom surface through fasteners, so that the inner layer light curtain and the outer layer light curtain are prevented from shifting in the using process, and the distance between the inner layer light curtain and the outer layer light curtain and the distance between the inner layer light curtain and the exchange platform are prevented from being influenced, so that safety accidents caused by untimely deceleration or sudden stop are avoided.
Compared with the prior art, the invention has the beneficial effects that: when the light curtain surrounding the exchange platform is shielded and triggered, the outer light curtain is necessarily shielded before the inner light curtain is shielded by an operator, so that the exchange platform is decelerated and stopped firstly and then is stopped emergently, the safety requirement that the exchange platform is stopped in time after the safety light curtain is shielded can be met, the brake impact generated when the exchange platform is stopped emergently can be reduced, or the brake impact is avoided, and the service life of the transmission structure of the exchange platform is prolonged.
Drawings
FIG. 1 is a flow chart of a method of reducing the brake shock of an exchange according to the present invention;
FIG. 2 is a schematic diagram of a system for reducing the brake shock of an exchange according to the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1
FIG. 1 shows an embodiment of a method for reducing the brake shock of an exchange, comprising the steps of:
the method comprises the following steps: arranging an inner layer light curtain surrounding the exposed surface of the exchange platform on the exchange platform;
step two: arranging an outer layer light curtain surrounding the inner layer light curtain outside the inner layer light curtain;
step three: the barrier shields the outer light curtain, and the function of decelerating the exchange station to stop is started;
step four: the barrier shields the inner light curtain and the emergency stop function of the exchange is started.
Wherein, the distance between inlayer light curtain and the outer light curtain is not less than 30 centimetres, and under this distance, no matter how fast operating personnel's speed, after triggering outer light curtain servo motor all can slow down a period earlier, inlayer light curtain could be triggered, ensures that the servo motor of change table has the time of slowing down.
Specifically, the distance between the inner layer light curtain and the outer layer light curtain is 30 centimeters, and the occupied area for constructing the outer layer light curtain is reduced.
The working principle or working process of the embodiment is as follows: when the outer light curtain is shielded by an obstacle (which can be an operator or any object), the servo motor of the exchange platform is decelerated to a stop state, and the exchange platform starts to gradually decelerate until the exchange platform stops. If an obstacle blocks the inner layer light curtain in the process of reducing the speed of the servo motor, the servo motor stops immediately. But since the servo motor has already started to decelerate, the brake impact is also smaller because the speed of the servo motor is slower than the initial speed. The outer safety light curtain is necessarily shielded before the inner safety light curtain is shielded by the barrier, so that the exchange station is ensured to be stopped in an emergency after being decelerated and stopped.
The beneficial effects of this embodiment: when the light curtain surrounding the exchange platform is shielded and triggered, the outer-layer safety light curtain is necessarily shielded before the inner-layer safety light curtain is shielded by an operator, so that the exchange platform is decelerated and stopped firstly and then is stopped emergently, the safety requirement that the exchange platform is stopped in time after the safety light curtain is shielded can be met, the brake impact generated when the exchange platform is stopped emergently can be reduced, or the brake impact is avoided, and the service life of the transmission structure of the exchange platform is prolonged.
Example 2
Fig. 2 shows an embodiment of a system capable of reducing the braking impact of the exchange platform 1, which includes the exchange platform 1, at least one inner light curtain 2, a controller, a servo motor for driving the exchange platform 1 to move, and an outer light curtain 3, wherein the inner light curtain 2 is located on the exposed surface of the exchange platform 1, and the outer light curtain 3 is located on the side of the inner light curtain 2 away from the exchange platform 1; the inner layer light curtain 2 and the outer layer light curtain 3 are both electrically connected with the controller; the inner layer light curtain 2 is shielded, and the controller controls the servo motor to stop emergently; the outer light curtain 3 is sheltered from, and the servo motor speed reduction is controlled to the controller to stop. This system can be used to implement the method of example 1 above.
Wherein, outer light curtain 3 surrounds the outside exposed surface of inner light curtain 2, and operating personnel will shelter from outer safe light curtain earlier necessarily before sheltering from inner safe light curtain, and this is equivalent to having guaranteed that the switching board 1 is that the speed reduction stops earlier then promptly stops.
In this embodiment, the exchange station has three exposed surfaces, and the inner light curtain 2 includes a first inner light curtain group 201, a second inner light curtain group 202, and a third inner light curtain group 203, which are respectively located on the three exposed surfaces of the exchange station 1; the outer layer light curtain 3 includes a first outer layer light curtain group 301 corresponding to the first inner layer light curtain group 201, a second outer layer light curtain group corresponding to the second inner layer light curtain group 202, and a third outer layer light curtain group 303 corresponding to the third inner layer light curtain group 203.
In particular, the distance between the outer light curtain 3 and the inner light curtain 2 is not less than 30 cm, in this embodiment 30 cm. At this distance, no matter how fast the speed of the operator is, the servo motor will decelerate for a period of time after triggering the outer light curtain 3, and then the inner light curtain 2 can be triggered, so as to ensure that the servo motor of the exchange station 1 has the deceleration time.
Wherein, the controller is a PLC controller. A logic control circuit is built in the PLC to realize the function of decelerating to stop of the outer layer light curtain 3 triggering the servo motor and the function of emergency stop of the inner layer light curtain 2 triggering the servo motor. The method for constructing the logic control circuit is conventional in the art and will not be described in detail here.
In addition, the inner layer light curtain 2 and the outer layer light curtain 3 are fixed on the bottom surface through fasteners, so that the inner layer light curtain 2 and the outer layer light curtain 3 are prevented from shifting in the using process, the distance between the influences and the exchange platform 1 are prevented, and safety accidents caused by untimely deceleration or sudden stop are avoided.
The working principle or working process of the embodiment is as follows: in the system, after the outer light curtain 3 is shielded and triggered by the barrier, the electric signal is sent to the deceleration-to-stop interface of the servo motor through the controller, so that the servo motor enters a deceleration state until the servo motor stops. If the inner layer light curtain 2 is shielded and triggered by the barrier in the deceleration process of the servo motor, an electric signal triggered by the inner layer light curtain 2 is sent to an emergency stop interface of the servo motor through the controller, and the servo motor stops rotating. But since the servo motor has already started to decelerate, the brake impact is also smaller because the speed of the servo motor is slower than the initial speed.
The beneficial effects of this embodiment: when the light curtain surrounding the exchange platform 1 is shielded and triggered, because an operator can necessarily shield the outer safety light curtain before shielding the inner safety light curtain, the exchange platform 1 is firstly decelerated and stopped and then emergently stopped, the safety requirement that the exchange platform 1 is stopped in time after the safety light curtain is shielded can be met, the brake impact generated when the exchange platform 1 is emergently stopped can be reduced, or the brake impact is avoided, and the service life of the transmission structure of the exchange platform 1 is prolonged.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A method for reducing brake impact of an exchange is characterized by comprising the following steps:
the method comprises the following steps: arranging an inner layer light curtain surrounding the exposed surface of the exchange platform on the exchange platform;
step two: arranging an outer layer light curtain surrounding the inner layer light curtain outside the inner layer light curtain;
step three: the barrier shields the outer light curtain, and the function of decelerating the exchange station to stop is started;
step four: the barrier shields the inner light curtain and the emergency stop function of the exchange is started.
2. The method of claim 1, wherein the distance between the inner light curtain and the outer light curtain is not less than 30 cm.
3. The method of claim 2, wherein the distance between the inner light curtain and the outer light curtain is 30 cm.
4. The system for reducing the brake impact of the exchange platform comprises the exchange platform (1), at least one inner light curtain (2), a controller and a servo motor for driving the exchange platform (1) to move, wherein the servo motor is electrically connected with the controller, and the inner light curtain (2) is positioned on the exposed surface of the exchange platform (1), and is characterized by further comprising an outer light curtain (3), wherein the outer light curtain (3) is positioned on one side, away from the exchange platform (1), of the inner light curtain (2); the inner layer light curtain (2) and the outer layer light curtain (3) are electrically connected with the controller; the inner layer light curtain (2) is shielded, and the controller controls the servo motor to stop emergently; the outer layer light curtain (3) is shielded, and the controller controls the servo motor to decelerate to stop.
5. A system for reducing the braking impact on an exchange (1) according to claim 4, characterized in that the outer light curtain (3) surrounds the exposed surface of the inner light curtain (2) on the side away from the exchange (1).
6. The system for reducing the braking impact of the exchange platform according to claim 5, wherein the inner light curtain (2) comprises a first inner light curtain group (201), a second inner light curtain group (202) and a third inner light curtain group (203), which are respectively located on three exposed surfaces of the exchange platform (1); the outer light curtain (3) comprises a first outer light curtain group (301) corresponding to the first inner light curtain group (201), a second outer light curtain group (302) corresponding to the second inner light curtain group (202) and a third outer light curtain group (303) corresponding to the third inner light curtain group (203).
7. A system for reducing the braking impact on exchange desks according to claim 4 characterized in that the distance between said outer light curtain (3) and said inner light curtain (2) is not less than 30 cm.
8. A system for reducing the braking impact of an exchange according to claim 7, characterized in that the distance between the outer light curtain (3) and the inner light curtain (2) is 30 cm.
9. The system for reducing board brake impact of an exchange of claim 4, wherein the controller is a PLC controller.
10. A system for reducing the braking impact of an exchange according to claim 4, characterized in that the inner light curtain (2) and the outer light curtain (3) are fixed to the bottom surface by means of fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648944.XA CN113369709A (en) | 2021-06-10 | 2021-06-10 | Method and system for reducing brake impact of exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648944.XA CN113369709A (en) | 2021-06-10 | 2021-06-10 | Method and system for reducing brake impact of exchange |
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| Publication Number | Publication Date |
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| CN113369709A true CN113369709A (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110648944.XA Pending CN113369709A (en) | 2021-06-10 | 2021-06-10 | Method and system for reducing brake impact of exchange |
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| CN (1) | CN113369709A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514322A (en) * | 2018-11-02 | 2019-03-26 | 拓卡奔马机电科技有限公司 | Cutting security protection system and method |
| CN109877505A (en) * | 2019-04-19 | 2019-06-14 | 河海大学常州校区 | A kind of welding unit based on PLC |
| US20200001460A1 (en) * | 2017-06-13 | 2020-01-02 | Sumitomo Riko Company Limited | Safety device |
| CN211015135U (en) * | 2019-11-26 | 2020-07-14 | 广东原点智能技术有限公司 | Personnel safety protection system for automatic production workshop |
| CN210997066U (en) * | 2019-07-26 | 2020-07-14 | 华工法利莱切焊系统工程有限公司 | Gantry type three-dimensional five-axis laser cutting machine |
-
2021
- 2021-06-10 CN CN202110648944.XA patent/CN113369709A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200001460A1 (en) * | 2017-06-13 | 2020-01-02 | Sumitomo Riko Company Limited | Safety device |
| CN109514322A (en) * | 2018-11-02 | 2019-03-26 | 拓卡奔马机电科技有限公司 | Cutting security protection system and method |
| CN109877505A (en) * | 2019-04-19 | 2019-06-14 | 河海大学常州校区 | A kind of welding unit based on PLC |
| CN210997066U (en) * | 2019-07-26 | 2020-07-14 | 华工法利莱切焊系统工程有限公司 | Gantry type three-dimensional five-axis laser cutting machine |
| CN211015135U (en) * | 2019-11-26 | 2020-07-14 | 广东原点智能技术有限公司 | Personnel safety protection system for automatic production workshop |
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Application publication date: 20210910 |