CN110549774A - Centralized processing control method for cutting fluid of engraving center - Google Patents
Centralized processing control method for cutting fluid of engraving center Download PDFInfo
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- CN110549774A CN110549774A CN201910843626.1A CN201910843626A CN110549774A CN 110549774 A CN110549774 A CN 110549774A CN 201910843626 A CN201910843626 A CN 201910843626A CN 110549774 A CN110549774 A CN 110549774A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B1/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models
- B44B1/06—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
- B44B3/06—Accessories, e.g. tool or work holders
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Abstract
The invention discloses a centralized processing control method for cutting fluid of a carving center, which comprises n carving centers, cutting fluid water tanks of the carving centers, 1 electrical control cabinet, 1 fluid collecting tank, 1 main fluid return pipeline, 1 main fluid supply pipeline and branch cutting fluid loops, wherein the cutting fluid water tank of each carving center comprises 1 flushing pump, 3 electromagnetic valves and 1 liquid level sensor, the fluid collecting tank comprises 1 water supply pump, 1 water purification pump and 1 liquid level sensor, the electrical control cabinet is provided with n online/offline knobs for indicating whether the cutting fluid of the corresponding carving center water tank participates in automatic circulation or not, the single carving center is detected, and whether the cutting fluid of the water tank of the single carving center participates in system circulation or not is judged; adding a single engraving center into a circular queue and updating the circular queue; and detecting the circulation state of the cutting fluid for the carving centers in the circulation queue, and starting material processing. The invention realizes the full-automatic circulating filtration treatment of the waste cutting fluid of a plurality of engraving centers.
Description
Technical Field
the invention belongs to the technical field, and particularly relates to a centralized processing control method for cutting fluid of a carving center.
Background
with the continuous development of the 3C industry, the application scenes of the numerical control engraving center are more and more, and the number of the engraving centers of a common processing factory is also continuously increased. In order to manage these devices more conveniently and more effectively, the engraving centers in the workshop are often collectively placed for production and processing, and the space between the devices is smaller in order to save space. With the increase of the service time of the equipment, the cutting fluid used in the carving center gradually deteriorates and even becomes smelly. However, the concentrated placement of the engraving center makes the handling and replacement of the cutting fluid very cumbersome.
At present, the cutting fluid of the carving center is processed and replaced mainly in the following two ways:
1. The cutting fluid samples in the water tanks of all the carving centers need to be collected manually every day, and whether the cutting fluid is deteriorated or not is measured through an instrument. When the cutting fluid is found to deteriorate, the deteriorated cutting fluid in the carving center water tank needs to be manually pumped out to a waste liquid tank for recycling. Then, the residual waste residue in the dry clean water tank is cleaned. Finally, preparing clean cutting fluid according to a certain proportion and pouring the clean cutting fluid into a water tank.
2. The cutting fluid is treated in a centralized mode, an extra liquid collecting tank is used, the cutting fluid in all the carving center water tanks flows into a water return pipe through each branch pipe, then flows back into the liquid collecting tank through the water return pipe, then the incoming cutting fluid is filtered in the liquid collecting tank, and finally the filtered cutting fluid is sent into each carving center water tank through a water supply pipe, so that the circulating treatment of the cutting fluid of a plurality of carving centers is realized.
the defects and shortcomings of the prior art are as follows:
1. The manual operation mode has high working intensity, wastes time and labor, and particularly has large workload when the number of equipment is large;
2. the condition that the water quality of the cutting fluid is forgotten to be measured can occur in manual operation;
3. the total equipment quantity which can participate in cutting fluid circulation in the existing centralized processing mode is not controllable, and the total equipment quantity which can participate in cutting fluid circulation is fixed due to the fixed volume of the liquid collecting tank;
4. The existing centralized treatment mode is time-consuming, and the time for completing the circulation of the cutting fluid of all equipment in the whole system is only determined by the power of a circulating pump in each equipment water tank and a circulating pump of a liquid collecting tank.
5. The existing centralized treatment mode is relatively rigid, and the cutting fluid circulation of single equipment is difficult to control freely.
Disclosure of Invention
the invention aims to solve the technical problem of providing a centralized treatment control method for cutting fluid of a carving center aiming at the defects in the prior art, and realizing rapid and automatic circulating filtration treatment of waste cutting fluid of a plurality of carving centers.
The invention adopts the following technical scheme:
A method for controlling the centralized processing of cutting fluid in an engraving center comprises n engraving centers and cutting fluid tanks thereof, 1 electrical control cabinet, 1 fluid collecting tank, 1 main fluid return pipeline, 1 main fluid supply pipeline and each branch cutting fluid loop, wherein the cutting fluid tank of each engraving center comprises 1 flushing pump, 3 electromagnetic valves and 1 liquid level sensor, the fluid collecting tank comprises 1 water supply pump, 1 water purification pump and 1 liquid level sensor, n online/offline knobs are installed on the electrical control cabinet and used for indicating whether the cutting fluid of the corresponding engraving center water tank participates in automatic circulation, and the control method comprises the following steps:
S1, detecting the single engraving center, and judging whether the water tank cutting fluid of the single engraving center participates in system circulation;
S2, adding a single engraving center into a circular queue and updating the circular queue;
and S3, detecting the circulation state of the cutting fluid for the carving centers in the circulation queue, and starting material processing.
Specifically, in step S1, the conditions under which each engraving center participates in the automatic circulation of the cutting fluid are as follows: the engraving center is in an on-line state; a flushing pump breaker in the engraving center cutting fluid water tank is in a closed state; the water supply pump and the water purification pump circuit breaker in the liquid collection tank are both in a closed state; the emergency stop button of the electric control cabinet is not pressed; pressing a system starting button; the engraving center is in a state that the numerical control system is withdrawn or the equipment is powered off.
Further, after the carving center enters automatic circulation, a programmable controller in the electric control cabinet firstly sends a signal setting of the carving center in circulation to the corresponding carving center; meanwhile, a water outlet valve of the carving central water tank is opened, a flushing pump is opened, and waste cutting fluid flows into a fluid collection tank where the water purifying pump is located along a pipeline;
If the carving central water tank liquid level sensor reaches the lower limit or the cycle time reaches, a water inlet valve of the carving central water tank is opened, a water feeding pump in a liquid collecting tank is opened, and the filtered cutting liquid flows back to the water tank; the switch of the water outlet valve of the water tank and the switch of the flushing pump are controlled by the cutting fluid circulation time T2, and the water outlet valve and the flushing pump in the water tank are closed after the circulation time is finished;
when a water inlet valve of the carving center water tank and a water feeding pump of the liquid collecting tank are opened, filtered cutting fluid continuously flows into the water tank, after the circulation time is finished, the cutting fluid in the carving center water tank reaches the upper limit set value of a liquid level sensor in the carving center water tank, the whole carving center is circulated, and the water inlet valve of the water tank and the water feeding pump in the liquid collecting tank are closed;
If the cutting fluid circulation time T2 is not finished, the cutting fluid in the water tank reaches the upper limit of the liquid level sensor, the water inlet valve of the water tank and the water feeding pump in the liquid collecting tank are closed, the water outlet valve of the water tank and the flushing pump continue to work, the circulation time is waited to finish or the liquid level sensor of the water tank reaches the lower limit, and the final condition that the circulation time is taken as the judgment of the circulation finish is realized.
Specifically, in step S2, when the engraving center reaches the condition of allowing automatic circulation of the cutting fluid, the engraving center quits the numerical control system from the engraving center and starts to time T1, and after the time is reached, the engraving center is added to the cutting fluid circulation queue and is at the lowest level of the queue level; during this period, if the engraving center fails to reach the condition for allowing the automatic circulation of the cutting fluid for a special reason, the engraving center is out of the queue.
further, after the system is started, the PLC in the control cabinet screens the front m carving centers with the highest level in the circulating queue in each running period of the PLC, the cutting fluid of the m carving centers is in an automatic circulating process, the circulating duration is T2, after the circulating duration is finished, the carving centers exit the circulating queue and count the time T3 again to serve as the condition of entering the circulating queue again, and the complete automatic circulating control of the cutting fluid of the water tank of the carving center is realized; and if the carving center fails to reach the condition of allowing the cutting fluid to automatically circulate at a certain moment, the carving center exits from the circulating queue.
specifically, in step S3, if a certain engraving center enters the numerical control system to prepare for starting to process the material, the engraving center in which the cutting fluid is circulating continuously alarms, and cannot process the material, and when the engraving center finishes circulating the cutting fluid, the alarm is automatically removed, and the engraving center processes the material normally; the cutting fluid is in a non-automatic circulation state but is added into a carving center exit queue in the circulation queue, and the carving center normally processes materials; the cutting fluid is in the carving center which is not circulated and is not added into the circulating queue to directly process the material.
Specifically, a water purifying pump in the liquid collecting tank can pump waste cutting liquid flowing into the liquid collecting tank into the bag filter, and a water feeding pump in the liquid collecting tank can pump new filtered cutting liquid into a cutting liquid water tank of the carving center; the liquid level sensor can control the starting and stopping of the water purifying pump; and when the liquid level height of the waste cutting fluid exceeds the upper limit set value of the liquid level sensor, the water purification pump starts to work until the liquid level height of the waste cutting fluid is lower than the lower limit set value of the liquid level sensor, and the water purification pump stops working.
Specifically, all carving centers which do not meet the condition of allowing automatic circulation of the cutting fluid or meet the condition of allowing the circulation of the cutting fluid in the circulating system do not exit the numerical control system, and if the circuit breakers of the two water purification pumps in the liquid collection tank are in a closed state at the moment, the cutting fluid in the liquid collection tank is self-circulated at intervals in the liquid collection tank.
Further, the internal cutting fluid self-circulation of header tank specifically is:
and the system is timed to be T4, when the time T4 is reached, the water feeding pump in the liquid collecting tank continuously works for a time T5, all water inlet valves and water outlet valves in the carving center water tank in the cutting fluid circulating system are closed, the cutting fluid in the liquid collecting tank circulates along the main liquid return pipeline and the main liquid feeding pipeline, and the cutting fluid in the liquid collecting tank automatically circulates for the time T5.
further, if the conditions for the self-circulation in the header tank are not satisfied at any time of the self-circulation in the header tank, the self-circulation in the header tank is immediately stopped, and the water pump for the header tank is immediately stopped.
Compared with the prior art, the invention has at least the following beneficial effects:
The invention relates to a centralized processing control method of cutting fluid of a carving center, which adopts full automation to realize the circulation and processing of the cutting fluid of a water tank of the carving center, greatly reduces the replacement time of the cutting fluid and prolongs the service life of the cutting fluid; whether a certain carving center participates in the circulation of the cutting fluid or not is freely controlled through a knob; the number of the devices participating in the cutting fluid circulation is not limited by the volume of the liquid collecting tank, and the maximum (or minimum) number of the devices participating in the cutting fluid circulation in the machining center can be increased or reduced; the circulation time of the cutting fluid of a single device can be freely adjusted according to the material quality of the processing scraps; the number of devices participating in the circulation of the cutting fluid at the same time can be dynamically adjusted at any time.
Further, step S1 is a precondition for the control system to determine whether step S2 is executed, and when the control system detects that the water tank cutting fluid of the single engraving center is confirmed to participate in the system circulation, the system executes step S2.
Furthermore, one of the preconditions for the cutting fluid circulation of the engraving center is that the machine tool is in a circulation queue, and the engraving center is at the tail of the circulation queue, and only when the engraving center is in the front m stations in the circulation queue (the m value can be set), the engraving center immediately realizes the automatic cutting fluid circulation process.
Further, step S3 is to determine the carving center that is in the circulation queue but has not yet performed the cutting fluid circulation (i.e. the carving center is in the queue with the sequence number between (n-m) and n, where n is the total number of carving centers in the system. for example, the total number of carving centers is 5, 4 carving centers enter the circulation queue, the circulation queue can simultaneously circulate the first 2 carving centers, m is 2, n is 5, and the carving centers after the sequence number of 3 in the circulation queue belong to the object of the determination in step S3). And simultaneously, the engraving center withdraws from the cutting fluid circulation queue, and the cutting fluid circulation queue also updates the queue state in real time.
Furthermore, a water purifying pump in the system can send waste cutting fluid flowing into the engraving center through a fluid return pipeline into a clean cutting fluid tank where the water feeding pump is located through a bag filter. And the filtered clean cutting fluid is delivered to each engraving center cutting fluid tank through a fluid delivery pipeline by a water delivery pump. The liquid level sensor can monitor the liquid level height of the cutting fluid in the cutting fluid water tank of the engraving center in real time, and the system controller can judge whether the stopping condition of the cycle process of the engraving center is reached or not according to the feedback value of the liquid level sensor.
Further, when some engraving centers in the circulating system do not meet the conditions of the engraving center for executing the cutting fluid circulating process (such as states of tripping of a motor protector of a flushing pump of the engraving center, abnormality of a power supply circuit of the flushing pump, abnormality of a fluid inlet and outlet electromagnetic valve and the like), the system controller can generate corresponding alarms to remind field operators to check and maintain the circulating circuit of the engraving center, and simultaneously the system controller immediately stops the circulating process of the engraving center and exits the circulating process from a circulating queue.
furthermore, the cutting fluid self-circulation is that the waste cutting fluid flowing back from the carving center in the fluid collection box flows between the clean cutting fluid in the fluid collection box. When the system does not have the carving center to carry out cutting fluid circulation for a long time, the cutting fluid of two parts in the liquid collecting box can carry out self-circulation to guarantee that the cutting fluid in the liquid collecting box can flow, avoid polluting the cutting fluid because of a large amount of bacteria produced by long-time stillness, also guaranteed simultaneously that the inside cutting fluid concentration of liquid collecting box is even, improved the cutting fluid quality.
In conclusion, the invention realizes the full-automatic circulation filtration treatment of the waste cutting fluid of a plurality of engraving centers and ensures the stability of the whole operation process of the system by depending on a detection device (a liquid level sensor) and an execution device (a liquid outlet electromagnetic valve and a liquid inlet electromagnetic valve) which are positioned at a cutting fluid water tank of the engraving center and a circulation judgment condition and sudden abnormal problem treatment mechanism of the engraving center.
the technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic diagram of a single device for determining the conditions of circulation permitted to participate;
FIG. 2 is a schematic diagram of a cutting fluid circulation process of a single equipment water tank;
FIG. 3 is a schematic diagram of a circular queue update of a single device in a circular process;
FIG. 4 is a schematic view of the working state of the engraving center in a cycle process of a single device;
FIG. 5 is a schematic view of the header tank purge pump startup and shutdown process;
FIG. 6 is a schematic view of the self-circulation process of the cutting fluid inside the header tank.
Detailed Description
the invention discloses a cutting fluid centralized processing control system for an engraving center, which comprises n engraving centers, cutting fluid water tanks of the engraving centers, 1 electric control cabinet, 1 liquid collecting tank, 1 main liquid return pipeline, 1 main liquid supply pipeline and each branch cutting fluid loop, wherein n is a positive integer, each engraving center cutting fluid water tank comprises a flushing pump, 3 electromagnetic valves (a water outlet valve, a water inlet valve and a machine tool flushing valve) and 1 liquid level sensor, and the liquid collecting tank comprises 1 water supply pump, 1 water purification pump and 1 liquid level sensor.
n ON-line/OFF-line knobs are mounted ON the cabinet body of the electric control cabinet, n is a positive integer, and the ON/OFF of each knob indicates whether cutting fluid of the carving central water tank participates in automatic circulation.
The following components are installed at a single carving central water tank:
1 flushing pump, 3 solenoid valves (outlet valve, inlet valve, machine tool flushing valve) and 1 level sensor.
The aerial pipeline support comprises the following components:
1 main liquid return pipeline, 1 main liquid feeding pipeline, each branch cutting liquid loop (comprising a liquid outlet branch pipeline connected to a water outlet valve of a carving center water tank and a liquid inlet branch pipeline connected to a water inlet valve of the carving center water tank), and two cables (1 380V power cable supplies a flushing pump, 1 multi-core signal cable supplies each electromagnetic valve, a liquid level sensor and communicates with a carving center) from an electric control cabinet to each electric component of each carving center cutting liquid water tank.
The liquid collecting box comprises the following parts:
1 electrical control cabinet (the knob of "online/offline" installs and supplies manual work in the electrical cabinet side), 1 liquid trap case (contain 2 parts in the liquid trap case and respectively with main liquid return pipe way, main liquid delivery pipeline connection, liquid trap case surface mounting have 1 clean water pump, 1 water pump that send, two pump power supplies are also by electrical control cabinet control).
The invention discloses a method for centralized processing and controlling cutting fluid of a carving center, which comprises the following steps:
S1, circulating the water tank cutting fluid of the single engraving center, and judging whether the single engraving center participates in circulation in the system;
referring to fig. 1, the conditions of each engraving center participating in the automatic circulation of the cutting fluid are as follows:
1. the engraving center is in an on-line state;
2. A flushing pump breaker in the engraving center cutting fluid water tank is in a closed state;
3. The water supply pump and the water purification pump circuit breaker in the liquid collection tank are both in a closed state;
4. the emergency stop button of the electric control cabinet is not pressed;
5. Pressing a system starting button;
6. the engraving center is in a state that the numerical control system is withdrawn or the equipment is powered off.
referring to fig. 2, after the engraving center enters the automatic cycle, the programmable controller in the electrical control cabinet first sends the signal "in cycle" of the engraving center to the corresponding engraving center; meanwhile, a water outlet valve of the carving central water tank is opened, and a flushing pump is opened, so that the waste cutting fluid flows into the part of the liquid collecting tank where the water purifying pump is located along the pipeline;
if the carving central water tank liquid level sensor reaches the lower limit or the cycle time reaches, the water inlet valve of the carving central water tank is opened, the water feeding pump in the liquid collecting tank is also opened, and the filtered cutting liquid flows back to the water tank; the water outlet valve of the water tank and the flushing pump are switched on and off only by the cutting fluid circulation time T2, and the water outlet valve and the flushing pump in the water tank are closed only after the circulation time is finished.
when a water inlet valve of the carving center water tank and a water feeding pump of the liquid collecting tank are opened, filtered cutting fluid continuously flows into the water tank, if the circulation time is over, the cutting fluid in the carving center water tank reaches the upper limit set value of a liquid level sensor in the carving center water tank, at the moment, the circulation of the whole carving center is over, and the water inlet valve of the water tank and the water feeding pump in the liquid collecting tank are closed;
If the cutting fluid circulation time T2 is not finished, the cutting fluid in the water tank reaches the upper limit of the liquid level sensor, at the moment, the water inlet valve of the water tank and the water feeding pump in the liquid collecting tank are closed, the water outlet valve of the water tank and the flushing pump continue to work, the circulation time is waited for to finish again or the liquid level sensor of the water tank reaches the lower limit, and the operation is repeated continuously and repeatedly, so that the final condition that the circulation time is used for judging the circulation finish is realized.
s2, updating a circulation queue in the circulation process of the engraving center;
referring to fig. 3, when the engraving center reaches the condition of allowing the automatic circulation of the cutting fluid, the engraving center quits the numerical control system from the engraving center and starts to count a certain time T1(T1 is freely set), and after the time is reached, the engraving center is added into a cutting fluid circulation queue and is at the lowest level of the queue level; during this period, if the engraving center fails to reach the condition for allowing the automatic circulation of the cutting fluid for a particular reason, the engraving center is immediately out of the queue.
After the system is started, the PLC in the control cabinet screens out the front m (m is a positive integer) carving centers with the highest level in the circulation queue in each running period of the PLC, cutting fluid of the m carving centers is in an automatic circulation process, the circulation lasts for a certain time T2(T2 is freely set according to the types of processed materials), after the circulation duration is finished, the carving centers exit the circulation queue and count time T3 again for a period of time (T3 is freely set) to serve as the condition for entering the circulation queue again (if the carving centers enter the numerical control system at the moment, the T3 timing is immediately cleared, and the cutting fluid of the water tank of the carving center is counted and added into the circulation queue according to the time T1 after the carving centers exit the numerical control system again), so that the complete automatic circulation control of the cutting fluid of the water tank of the. If a certain carving center fails to reach the condition of allowing the automatic circulation of the cutting fluid at a certain moment due to special reasons, the carving center immediately exits from the circulation queue.
S3, please refer to FIG. 4, if a certain carving center enters the numerical control system suddenly at this time to prepare for starting to process the material, the carving center where the cutting fluid is circulating will continuously alarm and cannot process the material, when the carving center finishes the circulation of the cutting fluid, the alarm is automatically removed, and the carving center can process the material normally; the carving center, which is in a state of not automatically circulating but added into the circulating queue, of the cutting fluid can immediately exit the queue, and the carving center can normally process materials; the material can be directly processed by the carving center in which the cutting fluid is not circulated and is not added into the circulation queue.
s4, starting and closing of cleaning pump of liquid collecting box
Referring to fig. 5, the water purifying pump in the fluid collection tank is used for pumping the waste cutting fluid flowing into the fluid collection tank into the bag filter, and the water feeding pump in the fluid collection tank is used for pumping the filtered new cutting fluid into the water tank of the engraving center; a liquid level sensor is arranged in a liquid tank where the clean water pump is positioned, and the start and stop of the clean water pump are only controlled by the liquid level sensor; and when the liquid level height of the waste cutting fluid exceeds the upper limit set value of the liquid level sensor, the water purification pump starts to work until the liquid level height of the waste cutting fluid is lower than the lower limit set value of the liquid level sensor, and the water purification pump stops working.
and S5, self-circulation of the cutting fluid in the header tank.
referring to fig. 6, when all the engraving centers in the system do not satisfy the condition of allowing the automatic circulation of the cutting fluid or all the engraving centers satisfying the condition of allowing the circulation of the cutting fluid do not exit the numerical control system, if the circuit breakers of the two pumps in the fluid collection tank are both in a closed state, the fluid collection tank can realize the self-circulation of the cutting fluid in the fluid collection tank at intervals.
the specific implementation process of self-circulation is as follows:
When the conditions are met, the internal self-circulation of the liquid collection tank starts, the system accounts for a period of time T4, the time can be freely set, after the timing time T4 is up, the water pump in the liquid collection tank continuously works for a period of time T5, the time can be freely set, all water inlet valves and water outlet valves in the carved central water tank in the cutting fluid circulation system are closed, the cutting fluid in the liquid collection tank circulates along the two main pipelines at the moment, and after the duration time T5 is up, the cutting fluid self-circulation in the liquid collection tank is realized once;
If the self-circulation condition in the liquid collecting box is not met at any time of the self-circulation in the liquid collecting box, the self-circulation in the liquid collecting box stops immediately, and the water pump of the liquid collecting box stops working immediately.
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method for controlling the centralized processing of the cutting fluid of the engraving center can realize the automatic circulating processing of the cutting fluid of the water tank of the engraving center and greatly prolong the service life of the cutting fluid. The specific work flow chart comprises the following steps of judging circulation conditions allowed by single equipment, updating a cutting fluid circulation process of a water tank of the single equipment, updating a circulation queue of the circulation process of the single equipment, working states of an engraving center of the circulation process of the single equipment, starting and closing processes of a cleaning pump of a header tank and a self-circulation process of the cutting fluid in the header tank.
the above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. the utility model provides a carving center cutting fluid centralized processing control method, which is characterized in that, including n carving centers and cutting fluid water tank thereof, 1 electrical control cabinet, 1 liquid collecting tank, 1 main liquid return pipeline, 1 main liquid supply pipeline and each branch cutting fluid return circuit, the cutting fluid water tank of every carving center all includes 1 flush pump, 3 solenoid valves and 1 level sensor, contain 1 water feeding pump in the liquid collecting tank, 1 water purification pump and 1 level sensor, the electrical control cabinet is last to install n online/offline knobs and is used for instructing carving center water tank cutting fluid that corresponds whether to participate in the automatic cycle, control method's step is as follows:
S1, detecting the single engraving center, and judging whether the water tank cutting fluid of the single engraving center participates in system circulation;
S2, adding a single engraving center into a circular queue and updating the circular queue;
And S3, detecting the circulation state of the cutting fluid for the carving centers in the circulation queue, and starting material processing.
2. The method for centralized processing and controlling of cutting fluid in engraving centers as claimed in claim 1, wherein in step S1, the conditions for each engraving center to participate in the automatic circulation of cutting fluid are as follows: the engraving center is in an on-line state; a flushing pump breaker in the engraving center cutting fluid water tank is in a closed state; the water supply pump and the water purification pump circuit breaker in the liquid collection tank are both in a closed state; the emergency stop button of the electric control cabinet is not pressed; pressing a system starting button; the engraving center is in a state that the numerical control system is withdrawn or the equipment is powered off.
3. The method for centralized processing and controlling of cutting fluid of an engraving center according to claim 1 or 2, wherein after the engraving center enters the automatic cycle, a programmable controller in an electrical control cabinet firstly sets and sends a signal in the cycle of the engraving center to the corresponding engraving center; meanwhile, a water outlet valve of the carving central water tank is opened, a flushing pump is opened, and waste cutting fluid flows into a fluid collection tank where the water purifying pump is located along a pipeline;
If the carving central water tank liquid level sensor reaches the lower limit or the cycle time reaches, a water inlet valve of the carving central water tank is opened, a water feeding pump in a liquid collecting tank is opened, and the filtered cutting liquid flows back to the water tank; the switch of the water outlet valve of the water tank and the switch of the flushing pump are controlled by the cutting fluid circulation time T2, and the water outlet valve and the flushing pump in the water tank are closed after the circulation time is finished;
When a water inlet valve of the carving center water tank and a water feeding pump of the liquid collecting tank are opened, filtered cutting fluid continuously flows into the water tank, after the circulation time is finished, the cutting fluid in the carving center water tank reaches the upper limit set value of a liquid level sensor in the carving center water tank, the whole carving center is circulated, and the water inlet valve of the water tank and the water feeding pump in the liquid collecting tank are closed;
if the cutting fluid circulation time T2 is not finished, the cutting fluid in the water tank reaches the upper limit of the liquid level sensor, the water inlet valve of the water tank and the water feeding pump in the liquid collecting tank are closed, the water outlet valve of the water tank and the flushing pump continue to work, the circulation time is waited to finish or the liquid level sensor of the water tank reaches the lower limit, and the final condition that the circulation time is taken as the judgment of the circulation finish is realized.
4. the method for controlling the centralized processing of cutting fluids in an engraving center as claimed in claim 1, wherein in step S2, when the engraving center reaches the condition of allowing the automatic circulation of cutting fluids, the engraving center withdraws from the numerical control system to start timing T1, and when the timing is reached, the engraving center joins the cutting fluid circulation queue and is at the lowest level of the queue level; during this period, if the engraving center fails to reach the condition for allowing the automatic circulation of the cutting fluid for a special reason, the engraving center is out of the queue.
5. the centralized processing control method for the cutting fluid of the carving center as claimed in claim 4, characterized in that after the system is started, the PLC in the control cabinet screens out the first m carving centers with the highest level in the circulation queue in each period of operation, the m carving center cutting fluid is in an automatic circulation process, the circulation duration is T2, after the circulation duration is completed, the carving center exits the circulation queue and counts the time T3 again as the condition of entering the circulation queue again, thereby realizing the fully automatic circulation control of the cutting fluid of the water tank of the carving center; and if the carving center fails to reach the condition of allowing the cutting fluid to automatically circulate at a certain moment, the carving center exits from the circulating queue.
6. The centralized processing control method for the cutting fluid of the carving center as claimed in claim 1, wherein in step S3, if a certain carving center enters a numerical control system to prepare for starting to process the material, the carving center in which the cutting fluid is circulating continuously alarms, and cannot process the material, and when the circulation of the cutting fluid of the carving center is finished, the alarm is automatically removed, and the carving center processes the material normally; the cutting fluid is in a non-automatic circulation state but is added into a carving center exit queue in the circulation queue, and the carving center normally processes materials; the cutting fluid is in the carving center which is not circulated and is not added into the circulating queue to directly process the material.
7. The method for centralized processing and controlling of cutting fluid of an engraving center according to claim 1, wherein a clean water pump in the header tank can pump the waste cutting fluid flowing into the header tank into the bag filter, and a water feed pump in the header tank can pump the filtered new cutting fluid into the cutting fluid tank of the engraving center; the liquid level sensor can control the starting and stopping of the water purifying pump; and when the liquid level height of the waste cutting fluid exceeds the upper limit set value of the liquid level sensor, the water purification pump starts to work until the liquid level height of the waste cutting fluid is lower than the lower limit set value of the liquid level sensor, and the water purification pump stops working.
8. the centralized processing control method for the cutting fluid of the engraving centers as claimed in claim 1, wherein when all the engraving centers in the circulating system do not satisfy the condition of allowing the automatic circulation of the cutting fluid or all the engraving centers satisfying the condition of allowing the circulation of the cutting fluid do not exit the numerical control system, if the circuit breakers of the two clean water pumps in the header tank are in a closed state, the header tank realizes the self-circulation of the cutting fluid in the header tank at intervals.
9. The centralized processing control method for the cutting fluid of the engraving center as recited in claim 8, wherein the self-circulation of the cutting fluid in the header tank is specifically as follows:
and the system is timed to be T4, when the time T4 is reached, the water feeding pump in the liquid collecting tank continuously works for a time T5, all water inlet valves and water outlet valves in the carving center water tank in the cutting fluid circulating system are closed, the cutting fluid in the liquid collecting tank circulates along the main liquid return pipeline and the main liquid feeding pipeline, and the cutting fluid in the liquid collecting tank automatically circulates for the time T5.
10. The method for controlling the centralized processing of the cutting fluid at the engraving center as recited in claim 9, wherein if the condition for the internal self-circulation of the header tank is not satisfied at any time of the internal self-circulation of the header tank, the internal self-circulation of the header tank is immediately stopped, and the water pump of the header tank is immediately stopped.
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