JP3521397B2 - Coolant circulation device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to cutting while supplying a cooling liquid to a cutting edge (including "perforation" in the present specification).
When performing, the suspension formed by mixing the chips generated by cutting with the cooling liquid is collected by a suction pump, the chips are removed by filtering the suspension, and the cooling liquid is supplied again to the cutting edge as cooling liquid. For the improvement of the cooling liquid circulation device.

[0002]

2. Description of the Related Art When cutting a floor or the like while supplying a cooling liquid to a cutting edge, a suspension formed by mixing chips generated by the cutting and the cooling liquid is collected and filtered to obtain a chip. The cooling liquid circulating device for removing the water and supplying it again to the cutting edge as the cooling liquid has already been disclosed by the present applicant in Japanese Patent Application No. 11-2484.
No. 23 is disclosed.

As one example thereof, FIG. 4 shows a cooling liquid circulating device applied to a punching machine for punching a floor surface. According to this cooling liquid circulation device 1 ′, the suspension water formed by mixing the cooling water supplied to the cutting edge of the bit 3 of the drilling machine 2 and the chips generated by drilling is once received by the water receiving pad 4,
Then, it is sent to the storage tank 6 by the suction pump 5. The suspended water sent to the storage tank 6 is filtered by a filter 7 to remove chips, and then supplied again as cooling water by the circulation pump 8 to the cutting edge of the bit 3.

[0004]

However, the cooling water supplied to the cutting edge of the bit 3 is not so large,
Suspended water is not always accumulated in the water receiving pad 4, so that if the suction pump 5 is constantly operated at a constant output, the suction pump 5 may suck air and cause a failure. . Then, such a problem occurs in the cooling liquid circulation device configured to collect the suspension by the suction pump regardless of the type of the cutting target or the cutting machine.

In view of the above, an object of the present invention is to smooth the cutting work by preventing a failure due to the air suction of the suction pump in the cooling liquid circulating device configured to collect the suspension by the suction pump. To do.

[0006]

That is, according to the invention of claim 1, when cutting is performed while supplying the cooling liquid to the cutting edge, chips produced by the cutting and the cooling liquid are mixed.
The suspension accumulated on the water receiving pad is collected with a suction pump,
A device for removing the chips by filtering this and supplying again to the blade edge by a circulation pump as a cooling liquid, comprising an intermittent operating means for intermittently operating the suction pump, wherein the intermittent operating means is the suction Pump and ex
The connection terminal of the circulation pump and the connection terminal of the power supply,
A suction pump and a tool for controlling on / off of the circulation pump.
It is placed in parallel with the intimer and this twin timer
Transformer and relay connected to the twin timer
The switch and the AC current stepped down by the transformer
Diode bridging converted to direct current and sent to the connection terminal
Power to the twin timer and transformer.
And a switch for turning it on and off.

According to the cooling liquid circulating device having such a structure, the intermittent operation means intermittently operates the suction pump to intermittently collect the suspension, so that when the suspension accumulated around the cutting edge is small in amount. In addition, it is possible to avoid a situation in which the suction pump sucks air and causes a failure, and it is possible to achieve smooth cutting work. And by the twin timer,
Since the on time and off time can be set independently,
Accurate control of intermittent operation of suction pump with simple structure
You can Specifically, suspension accumulated around the cutting edge
Cycle timer for liquids above a certain volume and below a certain volume
Im depending on the time of the timer on and off
If set, the suction pump sucks air and fails.
The situation can be avoided and the cutting work can be facilitated.
it can. Also, connect the power supply device connected to the suction pump to
The built-in marker simplifies the overall configuration of the device.
You can

Further, according to a second aspect of the invention, when cutting is performed while supplying the cooling liquid to the cutting edge, the suspension collected in the water receiving pad formed by mixing the chips produced by the cutting and the cooling liquid. Is collected by a suction pump, and the chips are removed by filtering it .
A device for supplying to said cutting edge I, the suction pump
The intermittent operation means for intermittently operating the
The stage is a sensor that detects the amount of suspension in the water receiving pad.
And limit switch are installed, and the suspension accumulated around the cutting edge.
Cycle timer for liquids above a certain volume and below a certain volume
The cooling liquid circulation device is operated intermittently according to the im .

[0009] According to the cooling liquid circulating apparatus having the above configuration, intake
In order to operate the pulling pump intermittently, the amount of suspended water is below a certain level
When the sensor detects that something is
The limit switch turns off in response to the issue.

[0010]

[0011]

[0012]

[0013]

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the description, the same elements will be denoted by the same reference symbols, without redundant description.

FIG. 1 is a schematic configuration diagram of an embodiment of a cooling liquid circulation device according to the present invention. In the cooling liquid circulating device 1A shown in the figure, the perforator 2 perforates the floor surface with the cutting edge of the bit 3, and cooling water is supplied to the cutting edge of the bit 3. Further, the water receiving pad 4 is arranged so as to surround the cutting edge of the bit 3, and prevents the suspended water formed by mixing the chips generated by the cutting of the floor surface and the cooling water from scattering around. Play a role.

The suction pump 5 plays a role of sucking the suspended water accumulated in the water receiving pad 4 and sending it to the storage tank 6. Further, the storage tank 6 has a filter 7 and a circulation pump 8 built therein, and temporarily stores the suspension water sent from the suction pump 5. And filter 7
Plays a role of filtering the suspended water sent from the suction pump 5 to remove chips and regenerating this as cooling water. The cooling water regenerated by the filter 7 flows to the storage tank 6, where it is stored for a while in order to settle fine impurities. The cooling water from which even the fine impurities have been removed in this way is recirculated to the bit 3 by the circulation pump 8.
Will be supplied to the cutting edge.

The structure up to this point is the same as that of the conventional cooling liquid circulating device 1'shown in FIG.
A connects the suction pump 5 and the circulation pump 8 to a power supply box 9A, which is the same power supply device, and connects the power supply box 9A to an AC power supply box.
The point of connection to the power source 10 is different from the above-described cooling liquid circulation device 1'of FIG.

The circuit configuration of the power supply box 9A is shown in FIG. In the figure, the outlet 9a is an AC power source 1
0, and the connectors 9b and 9c are the connection terminals for the outlet 5a of the suction pump 5 and the outlet 8a of the circulation pump 8, respectively.

When the outlet 9a is connected to the AC power source 10, the indicator lamp 9d is lit regardless of whether the switch 9e is on or off. The switch 9e is a twin timer 9
It plays a role of turning on and off the power supply to the f and the transformer 9g.

The twin timer 9f is arranged in parallel with the transformer 9g, and is energized / de-energized by turning on / off the switch 9e, and plays a central role as a control means for on / off controlling the suction pump 5. A relay switch 9h is connected to the twin timer 9f, and the ON time of the relay switch 9h can be set by operating the button T1 of the twin timer 9f, and similarly, the relay switch 9h can be operated by operating the button T2. The off time of 9h can be set.

The transformer 9g includes a switch 9e and a diode bridge 9 which will be described later in parallel with the twin timer 9f.
It is arranged between i and 9j and plays a role of dropping the current supplied from the AC power source 10 to a voltage value suitable for the suction pump 5 and the circulation pump 8. For example, here, the current supplied from the 100 volt AC power supply 10 is
It is assumed that a voltage value of 4 V is applied to the diode bridge 9i and a voltage value of 12 V is applied to the diode bridge 9j.

The relay switch 9h is a twin timer 9
It is connected to f and plays a role of turning on / off the power supply from the transformer 9g to the diode bridge 9i. Further, the diode bridges 9i and 9j play a role of converting the alternating current stepped down by the transformer 9g into a direct current and sending it to the connectors 9b and 9c, and are connected in parallel to the transformer 9g.

Power supply box 9A having the above circuit configuration
In, when the outlet 9a is connected to the AC power source 10, the indicator lamp 9d lights up. Then, when the switch 9e is off, the indicator lamp 9d only lights up, but when the switch 9e is turned on, a current also flows through the twin timer 9f and the transformer 9g.

Even when the twin timer 9f is energized, the relay switch 9h is turned off during the set off time. Therefore, at this time, no current flows through the diode bridge 9i and the suction pump 5 does not operate. On the other hand, regardless of whether the twin timer 9f is on or off, the diode bridge 9j causes a current stepped down by the transformer 9g to flow when the switch 9e is turned on. That is, when the switch 9e is turned on, the twin timer 9
During the set off time of f, the suction pump 5 does not operate, and only the circulation pump 8 operates.

Next, during the set ON time of the twin timer 9f, the relay switch 9h is turned on, a current also flows through the diode bridge 9i, and the suction pump 5 operates. That is, when the switch 9e is turned on, if the twin timer 9f is in the set on-time, both the suction pump 5 and the circulation pump 8 are activated.

As described above, by controlling the twin timer 9f to turn on and off, the circulation pump 8 can be operated continuously and the suction pump 5 can be operated intermittently. In particular, if the ON time and OFF time of the twin timer 9f are set in correspondence with the cycle time when the amount of the suspension accumulated around the blade edge is equal to or more than a certain amount and when the amount is less than the certain amount, the suction pump 5 blows air. It is possible to avoid the situation of sucking and causing a failure, and it is possible to facilitate the cutting work.

In this embodiment, the suction pump 5 and the circulation pump 8 are connected to the same power source box 9A, but the present invention is not limited to this, and the circulation pump 8 is connected to another power source box. Alternatively, in addition to the circulation pump 8, another pump or other equipment may be connected to the power supply box 9A to which the suction pump 5 is connected.
Further, although the twin timer 9f is built in the power supply box 9A in this embodiment, both may be provided separately, and the circuit configuration of the power supply box 9A is not limited to that shown in this embodiment. Further, the twin timer 9f need not be able to set the ON time and the OFF time independently of each other, and the suction pump 5 may be ON / OFF controlled by means other than the timer. For example,
A sensor for detecting the amount of suspended water and a limit switch are provided on the water receiving pad 4, and when the sensor detects that the amount of suspended water is below a certain level, the limit switch is turned off by receiving a signal from this sensor. Things can be considered. Furthermore, the intermittent operation means for intermittently operating the suction pump 5 does not need to control the suction pump 5 on and off as in the present embodiment. Moreover, the intermittent actuating means is not limited to one based on an electrical method, but may be based on a mechanical method, or both may be used together.

Incidentally, the cooling liquid circulating device may be applied to a road surface cutter as shown in FIG. 3, instead of being applied to a punching machine. It should be noted that the cooling liquid circulation device 1B applied to the road surface cutter 11 in the same figure does not have a circulation pump, and the suspended water sent to the storage tank 6 by the suction pump 5 is filtered by the filter 7 to become cooling water again, and the self-weight Since it is configured to be pressed into the blade again by
Needless to say, it has a configuration corresponding to this. The power supply box 9B includes an engine-driven generator 12
It is connected to the.

As described above, according to the cooling liquid circulating apparatus of the first aspect, the intermittent operation means intermittently operates the suction pump to intermittently collect the suspension, so that the suspension is collected around the blade edge. It is possible to avoid a situation in which the suction pump sucks air and causes a failure when the amount of the suspension is small, and it is possible to facilitate the cutting work. Also cold
According to the effluent circulation device, the control means is turned on and off.
Simple because it includes a timer that can set the time independently
With this configuration, the intermittent operation state of the suction pump can be accurately controlled.
You can Specifically, the suspension accumulated around the cutting edge
Cycle time above a certain amount and below a certain amount
Set the on time and off time of the timer according to
If you do so, the suction pump may suck air and malfunction.
Can be avoided and the cutting work can be facilitated.
It Furthermore, depending on the work process and the amount of cooling liquid, the suction pump
The intermittent operation state can be adjusted accurately. And
A timer is built into the power supply connected to the suction pump.
Therefore, the configuration of the entire device can be simplified.
It

Further, according to the cooling liquid circulating device of the second aspect, the amount of suspended water is kept constant in order to intermittently operate the suction pump.
When the sensor detects that it is below a certain limit, this sensor
The limit switch to turn off when receiving a signal from
Become. Furthermore, the intermittent operation state of the suction pump can be adjusted appropriately according to the work process and the amount of cooling liquid.

[0031]

[0032]

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a cooling liquid circulation device according to the present invention.

FIG. 2 is a circuit configuration diagram of a power supply box in the cooling fluid circulation device shown in FIG.

FIG. 3 is a schematic configuration diagram showing another embodiment of a cooling liquid circulation device according to the present invention.

FIG. 4 is a conventional example of a cooling liquid circulation device used in a punching machine for punching a floor surface.

[Explanation of symbols]

1A, 1B, 1 '... Coolant circulation device 2 ... Punch 3 ... bit 4… Water receiving pad 5 ... Suction pump 5a ... Outlet 6 ... Reservoir 7 ... Filter 8… Circulation pump 8a ... Outlet 9A, 9B ... Power supply box 9a ... Outlet 9b, 9c ... Connector 9d ... Indicator light 9e ... switch 9f ... Twin timer 9g ... trance 9h ... Relay switch 9i, 9j ... Diode bridge 10 ... AC power supply 11… Road cutter 12 ... Generator

Claims (2)

(57) [Claims] 1. When performing cutting while supplying a cooling liquid to the cutting edge, a suspension pump collects a suspension collected in a water receiving pad formed by mixing chips generated by the cutting and the cooling liquid, A device that removes the chips by filtering and supplies again to the blade edge by a circulation pump as a cooling liquid, comprising an intermittent operation means for intermittently operating the suction pump,
The intermittent operation means includes the suction pump and the circulation port.
Pump connection terminal, power supply connection terminal, and suction pump
And a twin tie for controlling the on / off of the circulation pump
Marr and the trans
And a relay switch connected to the twin timer
And the AC current stepped down by the transformer
A diode bridge that is converted to and sent to the connection terminal,
Turns on / off power to the twin timer and transformer
And a switch for controlling the cooling liquid circulation device. 2. When performing cutting while supplying a cooling liquid to the cutting edge, a suspension pump collects a suspension collected in a water receiving pad formed by mixing chips generated by the cutting and the cooling liquid. Is a device that removes the chips by filtering, and supplies again to the blade edge by a circulation pump as a cooling liquid, comprising an intermittent operation means for intermittently operating the suction pump,
The intermittent operation means detects the amount of suspension on the water receiving pad.
A cutting sensor and limit switch are installed to
When the amount of suspension that accumulates on a side exceeds a certain amount and when it falls below a certain amount
A cooling liquid circulation device that operates intermittently according to the cycle time .