CN206551250U - A kind of portable cutters - Google Patents
A kind of portable cutters Download PDFInfo
- Publication number
- CN206551250U CN206551250U CN201720230053.1U CN201720230053U CN206551250U CN 206551250 U CN206551250 U CN 206551250U CN 201720230053 U CN201720230053 U CN 201720230053U CN 206551250 U CN206551250 U CN 206551250U
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- coupled
- protective cover
- saw blade
- signal
- circuit
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Abstract
The utility model discloses a kind of portable cutters, including body, it is arranged on the saw blade of body one end, the protective cover being arranged on above saw blade and the handle for being fixed on body side, protective cover both sides lower edge is provided with along the evenly distributed pulley of protective cover length direction, the pulley lower end is less than body lower surface, the protective cover is dorsad held with handle and is provided with directive wheel, the directive wheel lower end is in same level with pulley lower end, and the directive wheel is in same vertical plane with saw blade.A kind of portable cutters of the present utility model, chip, which is sputtered, during preventing from cutting comes and hurts operating personnel.
Description
Technical field
The utility model is related to cutting equipment technical field, more specifically, it relates to a kind of portable cutters.
Background technology
Portable cutters are mainly used in the cutting of building stones sheet material, ceramic tile and concrete etc..Current portable cutters
Including body, the saw blade of body one end and the protective cover being arranged on above saw blade are arranged on, but chip is still in cutting
It can be easy to sputter and, easily hurt operating personnel, it is therefore desirable to propose a kind of new scheme to solve this problem.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of portable cutters, to prevent
Chip sputters to come and hurt operating personnel when only cutting.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of portable cutting
Machine, including body, it is arranged on the saw blade of body one end, the protective cover being arranged on above saw blade and the hand for being fixed on body side
Handle, protective cover both sides lower edge is provided with along the evenly distributed pulley of protective cover length direction, and the pulley lower end is low
In body lower surface, the protective cover is dorsad held with handle and is provided with directive wheel, and the directive wheel lower end is in pulley lower end
In same level, the directive wheel is in same vertical plane with saw blade.
By using above-mentioned technical proposal, the lower edge in protective cover both sides sets evenly distributed along protective cover length direction
Pulley, and pulley lower end be less than body lower surface so that cutting when, protective cover lower edge can be close to cut
Body surface, can effectively prevent chip during cutting from sputtering to come, and hurt operating personnel；Again in protective cover and handle dorsad
End is provided with directive wheel, and directive wheel lower end is in same level with pulley lower end so that when pulley and cut object and connect
When touching, directive wheel is also contacted with material to be cut body phase, and directive wheel is in same vertical plane with saw blade so that can be by being oriented to
Wheel moves to ensure sharpnes of cuts along line of cut.
The utility model is further arranged to：The body lower end is provided with bottom plate, and the bottom plate is in pulley lower end
In same level.
By using above-mentioned technical proposal, the bottom plate that same level is in pulley lower end is set in body lower end, made
In cutting, body can be connected on cut object by bottom plate, on the one hand, can be cut in cutting without portable
Cutting mill, it is more laborsaving；On the other hand, it can replace being lived the other end of cut object with hand pressure in addition.
The utility model is further arranged to：The body is provided with water pipe, and the protective cover is provided with towards saw blade
Shower nozzle, the protective cover is provided with the fixed mount for stationary nozzle, and the water pipe is connected with shower nozzle.
By using above-mentioned technical proposal, the shower nozzle towards saw blade is fixed with by fixed mount in dust cover, and in body
The water pipe being connected with shower nozzle is set, cooling can be played a part of to saw blade, also play the effect of depositing dust.
The utility model is further arranged to：Magnetic valve, the magnetic valve connection are provided between the water pipe and shower nozzle
There is automatic opening-closing, the automatic opening-closing includes, detection unit, on the protective cover for being arranged at saw blade side, for examining
Survey the temperature of saw blade, and output temperature detection signal；Control unit, is coupled to the detection unit, for receiving and responding to
The temperature detection signal, to control the keying of magnetic valve；And power subsystem, to provide work for the automatic opening-closing
Make voltage.
By using above-mentioned technical proposal, the magnetic valve for being connected with automatic opening-closing is set between water pipe and shower nozzle,
Saw blade temperature is detected by detection unit, and output temperature detection signal, only when saw blade temperature is higher than setting value, control
Unit processed controls magnetic valve to open according to temperature detection signal, and shower nozzle sprays water to saw blade, to reduce saw blade temperature, saves water money
Source.
The utility model is further arranged to：The detection unit includes temperature sensor, and the temperature sensor is fixed
In on the protective cover of saw blade side, the temperature sensor is coupled with control unit, and output temperature detection signal.
The utility model is further arranged to：Described control unit controls the keying of magnetic valve according to temperature detection signal,
After the temperature detection signal that detection unit is exported is higher than predetermined value and predetermined hold-time, control unit opens solenoid valve.
The utility model is further arranged to：Described control unit includes, comparison circuit, is coupled to detection unit, is used for
The temperature detection signal received is compared with reference voltage and exports a comparison signal；Anti-clutter circuit, is coupled to comparison electric
Road, for controlling OFF signal according to the situation of change output one of comparison signal in the scheduled time；On-off circuit, is coupled to anti-tampering electricity
Road, for according to the break-make between control OFF signal control magnetic valve and power subsystem.
The utility model is further arranged to：The comparison circuit includes, reference voltage generating circuit, with one first electricity
Resistance, its one end is coupled to the second direct current, and the other end is grounded after being connected with a second resistance；Wherein, from first resistor and second
The reference voltage is produced between resistance；Comparator, it is described with an in-phase input end, an inverting input and an output end
In-phase input end is coupled to the output end of temperature sensor, and inverting input is coupled to reference voltage, and output end output one is compared
Signal.
The utility model is further arranged to：The anti-clutter circuit includes, delay circuit, and its input is coupled to described
The output end of comparison circuit simultaneously exports a delay comparison signal；And with door, with two inputs and an output end, it
The output end of the output end coupling of one input and delay circuit, the second input and comparison circuit is coupled, the output of its output end
Control OFF signal.
The utility model is further arranged to：The on-off circuit includes, NPN triode, its grounded emitter, and base stage is led to
Cross a 3rd resistor be coupled to the control OFF signal and by one the 4th resistance and emitter stage altogether；Relay, its coil one end
The first direct current is coupled to, the other end is coupled to the colelctor electrode of the NPN triode, and its normally opened contact switch is serially connected with power subsystem
Between magnetic valve；Diode, its negative electrode is coupled to first direct current, anode be coupled to the colelctor electrode of NPN triode with after
The tie point of the coil of electrical equipment.
In summary, the utility model has the advantages that：When portable cutters carry out cutting operation, pass through
Temperature sensor is detected in real time to the temperature of saw blade, when saw blade temperature is more than setting value, the temperature of temperature sensor output
Degree detection signal is more than reference voltage, and comparator output high level is input to after delay circuit, delay predetermined time and exported, if
Instantly comparator output is still high level, then the control OFF signal exported with door is high level, turns on NPN triode, relay
It is powered, inner-core adhesive normally opened contact switch turns on AC power and magnetic valve, and magnetic valve is opened, and shower nozzle starts to saw blade
Water spray, to reduce saw blade temperature.
Brief description of the drawings
Fig. 1 is structural representation one of the present utility model；
Fig. 2 is structural representation two of the present utility model；
Fig. 3 is circuit diagram of the present utility model；
Fig. 4 is the circuit diagram of power subsystem.
In figure：1st, body；2nd, saw blade；3rd, protective cover；4th, handle；5th, pulley；6th, directive wheel；7th, bottom plate；8th, water pipe；9th, spray
Head；10th, fixed mount；11st, magnetic valve；12nd, control unit；14th, comparison circuit；15th, anti-clutter circuit；16th, on-off circuit；17、
Reference voltage generating circuit.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
A kind of portable cutters, as shown in figure 1, including body 1, being arranged on the saw blade 2 of the one end of body 1, being arranged on saw
Motor is installed in the protective cover 3 of the top of piece 2 and the handle 4 for being fixed on the side of body 1, body 1, saw blade 2 is fixed on motor
Output shaft on, protective cover 3 is fixed on the body 1 of the side of saw blade 2, and saw blade 2 is set in protective cover 3.In protective cover 3
The lower edge of both sides is rotatably connected to along the evenly distributed pulley 5 of the length direction of protective cover 3, and the lower end of pulley 5 is less than body 1
Lower surface so that cutting when, the lower edge of protective cover 3 can be close to cut body surface, can effectively prevent cutting
When chip sputter, and hurt operating personnel.In protective cover 3, dorsad the one end of handle 4 is rotatably connected to a directive wheel 6, leads
It is in the lower end of wheel 6 and the lower end of pulley 5 in same level, and directive wheel 6 is on same vertical plane with saw blade 2,
So that when pulley 5 and cut object and when contacting, directive wheel 6 is also contacted with material to be cut body phase, directive wheel 6 with saw blade 2
In in same vertical plane so that can move to ensure sharpnes of cuts along line of cut by directive wheel 6.Under body 1
End face fixes a bottom plate 7, and bottom plate 7 is in same level with the lower end of pulley 5 so that in cutting, body 1 can pass through bottom
Plate 7 is connected on cut object, can replace being lived the other end of cut object with hand pressure in addition.
As shown in Figure 1 and Figure 2, shower nozzle 9 is provided with by fixed mount 10 on protective cover 3, body 1, which runs through, water pipe 8, water pipe 8
One end connects water source, and the other end is connected with shower nozzle 9, and shower nozzle 9 plays the cooling effect to saw blade 2, and cut towards saw blade 2
The effect of depositing dust when cutting.
As shown in Figure 2 and Figure 3, magnetic valve 11 is mounted between water pipe 8 and shower nozzle 9, and magnetic valve 11 is connected with and opened automatically
Device is closed, automatic opening-closing includes, detection unit, on the protective cover 3 for being arranged at the side of saw blade 2, the temperature for detecting saw blade 2
Degree, and output temperature detection signal；Control unit 12, is coupled to detection unit, for receiving and responding to temperature detection signal,
To control the keying of magnetic valve 11；And power subsystem, to provide operating voltage for automatic opening-closing.
In the utility model, power unit circuit figure passes through as shown in figure 4, its input is coupled to 220V AC powers
The first direct current Vout_1 is exported after rectification decompression filtering, first direct current Vout_1 is 12V；Second direct current Vout_2,
Second direct current Vout_2 is 5V, so that control unit 12 is used, in addition, direct to magnetic valve from the input of power subsystem
11 power supplies, the i.e. power supply of magnetic valve 11 are 220V AC powers.
Detection unit includes temperature sensor, and temperature sensor is fixed on the protective cover 3 of saw blade side, temperature sensor
Coupled with control unit 12, and output temperature detection signal.
Control unit 12 controls the keying of magnetic valve 11 according to temperature detection signal, the temperature detection exported when detection unit
After signal is higher than predetermined value and predetermined hold-time, the opens solenoid valve 11 of control unit 12.
Control unit 12 in the utility model includes, comparison circuit 14 is coupled to detection unit, for that will receive
Temperature detection signal exports a comparison signal compared with reference voltage；Anti-clutter circuit 15, is coupled to comparison circuit 14, is used for
OFF signal is controlled according to the situation of change output one of comparison signal in the scheduled time；On-off circuit 16, is coupled to anti-clutter circuit 15,
For according to the break-make between control OFF signal control magnetic valve 11 and power subsystem.
Wherein, comparison circuit 14 includes, a reference voltage generating circuit 17, with a first resistor R1, its one end coupling
In the second direct current Vout_2, the other end is grounded after being connected with a second resistance R2；Wherein, from first resistor R1 and second resistance
Reference voltage is produced between R2；One comparator A, with an in-phase input end, an inverting input and an output end, homophase input
End is coupled to the output end of temperature sensor 13, and inverting input is coupled to reference voltage, and output end exports a comparison signal.Than
It is active voltage comparator compared with device A, its power access end is coupled to the second direct current Vout_2, earth terminal ground connection.
Anti-clutter circuit 15 includes, delay circuit, and its input, which is coupled to the output end of comparison circuit 14 and exports one, to be prolonged
When comparison signal；And with door AND_1, with two inputs and an output end, its first input end and delay circuit
Output end is coupled, and the output end of the second input and comparison circuit 14 is coupled, its output end output control OFF signal.
Delay circuit can select the delay circuit being made up of 555 chips for core in the utility model, due to delay electricity
Road has been disclosed, and is prior art, and those skilled in the art should be understood its operation principle, no longer goes to live in the household of one's in-laws on getting married tell herein.
In addition, on-off circuit 16 includes, a NPN triode Q1, its grounded emitter, base stage passes through a 3rd resistor R3 couplings
Be connected to control OFF signal and by one the 4th resistance R4 and emitter stage altogether；One relay KM, it is straight that its coil one end is coupled to first
Flow electricity Vout_1, the other end is coupled to the colelctor electrode of the NPN triode Q1, its normally opened contact switch S be serially connected with power subsystem and
Between magnetic valve 11；One diode D1, its negative electrode is coupled to first direct current Vout_1, and anode is coupled to NPN triode Q1
Colelctor electrode and relay KM coil tie point.
The operation principle of automatic opening-closing is as follows：When portable cutters carry out cutting operation, pass through TEMP
Device is detected in real time to the temperature of saw blade 2, when the temperature of saw blade 2 is more than setting value, the temperature detection of temperature sensor output
Signal is more than reference voltage, and comparator A output high level is input to after delay circuit, delay predetermined time and exported, if instantly
Comparator A outputs are still high level, then the control OFF signal exported with door AND_1 is high level, turns on NPN triode Q1, relay
Device KM is powered, inner-core adhesive normally opened contact switch S, and conducting AC power and magnetic valve 11, magnetic valve 11 are opened, shower nozzle 9
Start to spray water to saw blade 2, to reduce the temperature of saw blade 2.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of portable cutters, including body（1）, be arranged on body（1）The saw blade of one end（2）, be arranged on saw blade（2）On
The protective cover of side（3）And it is fixed on body（1）The handle of side（4）, it is characterised in that：The protective cover（3）Both sides are following
Edge is provided with along protective cover（3）The evenly distributed pulley of length direction（5）, the pulley（5）Lower end is less than body（1）Lower end
Face, the protective cover（3）With handle（4）Dorsad end is provided with directive wheel（6）, the directive wheel（6）Lower end and pulley（5）Lower end
In same level, the directive wheel（6）With saw blade（2）In same vertical plane.
2. a kind of portable cutters according to claim 1, it is characterised in that：The body（1）Lower end is provided with bottom
Plate（7）, the bottom plate（7）With pulley（5）Lower end is in same level.
3. a kind of portable cutters according to claim 1, it is characterised in that：The body（1）It is provided with water pipe
（8）, the protective cover（3）It is provided with towards saw blade（2）Shower nozzle（9）, the protective cover（3）It is provided with for stationary nozzle
（9）Fixed mount（10）, the water pipe（8）With shower nozzle（9）It is connected.
4. a kind of portable cutters according to claim 3, it is characterised in that：The water pipe（8）With shower nozzle（9）Between
It is provided with magnetic valve（11）, the magnetic valve（11）Automatic opening-closing is connected with, the automatic opening-closing includes,
Detection unit, is arranged at saw blade（2）The protective cover of side（3）On, for detecting saw blade（2）Temperature, and output temperature
Detect signal；
Control unit（12）, the detection unit is coupled to, for receiving and responding to the temperature detection signal, to control electricity
Magnet valve（11）Keying；
And power subsystem, to provide operating voltage for the automatic opening-closing.
5. a kind of portable cutters according to claim 4, it is characterised in that：The detection unit includes TEMP
Device, the temperature sensor is fixed on the protective cover of saw blade side（3）On, the temperature sensor and control unit（12）Coupling
Connect, and output temperature detection signal.
6. a kind of portable cutters according to claim 5, it is characterised in that：Described control unit（12）According to temperature
Detect signal control magnetic valve（11）Keying, when the temperature detection signal that detection unit is exported is higher than predetermined value and persistently making a reservation for
After time, control unit（12）Opens solenoid valve（11）.
7. a kind of portable cutters according to claim 6, it is characterised in that：Described control unit（12）Including,
Comparison circuit（14）, be coupled to detection unit, for by the temperature detection signal received compared with reference voltage it is more defeated
Go out a comparison signal；
Anti-clutter circuit（15）, it is coupled to comparison circuit（14）, it is defeated for the situation of change according to comparison signal in the scheduled time
Go out a control OFF signal；
On-off circuit（16）, it is coupled to anti-clutter circuit（15）, for according to control OFF signal control magnetic valve（11）With power supply list
Break-make between member.
8. a kind of portable cutters according to claim 7, it is characterised in that：The comparison circuit（14）Including,
Reference voltage generating circuit（17）, with a first resistor, its one end is coupled to the second direct current, the other end and one second
It is grounded after resistant series；Wherein, the reference voltage is produced between first resistor and second resistance；
Comparator, with an in-phase input end, an inverting input and an output end, the in-phase input end is coupled to temperature biography
The output end of sensor, inverting input is coupled to reference voltage, and output end exports a comparison signal.
9. a kind of portable cutters according to claim 8, it is characterised in that：The anti-clutter circuit（15）Including,
Delay circuit, its input is coupled to the comparison circuit（14）Output end and export one be delayed comparison signal；And
With door, with two inputs and an output end, the output end of its first input end and delay circuit is coupled, and second is defeated
Enter end and comparison circuit（14）Output end coupling, its output end output control OFF signal.
10. a kind of portable cutters according to claim 9, it is characterised in that：The on-off circuit（16）Including,
NPN triode, its grounded emitter, base stage is coupled to the control OFF signal and by one the 4th electricity by a 3rd resistor
Resistance and emitter stage are altogether；
Relay, its coil one end is coupled to the first direct current, and the other end is coupled to the colelctor electrode of the NPN triode, and its is normally opened
Contact switch is serially connected with power subsystem and magnetic valve（11）Between；
Diode, its negative electrode is coupled to first direct current, and anode is coupled to the colelctor electrode of NPN triode and the coil of relay
Tie point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720230053.1U CN206551250U (en) | 2017-03-10 | 2017-03-10 | A kind of portable cutters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720230053.1U CN206551250U (en) | 2017-03-10 | 2017-03-10 | A kind of portable cutters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206551250U true CN206551250U (en) | 2017-10-13 |
Family
ID=60363487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720230053.1U Expired - Fee Related CN206551250U (en) | 2017-03-10 | 2017-03-10 | A kind of portable cutters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206551250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877713A (en) * | 2017-12-12 | 2018-04-06 | 胡才春 | A kind of multifunctional groove box cutting machine and its application method |
-
2017
- 2017-03-10 CN CN201720230053.1U patent/CN206551250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877713A (en) * | 2017-12-12 | 2018-04-06 | 胡才春 | A kind of multifunctional groove box cutting machine and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20180310 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |