CN102248518A - Magnetic control nail gun - Google Patents
Magnetic control nail gun Download PDFInfo
- Publication number
- CN102248518A CN102248518A CN2011101880147A CN201110188014A CN102248518A CN 102248518 A CN102248518 A CN 102248518A CN 2011101880147 A CN2011101880147 A CN 2011101880147A CN 201110188014 A CN201110188014 A CN 201110188014A CN 102248518 A CN102248518 A CN 102248518A
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- armature
- control coil
- control
- resistance
- coil
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003990 capacitor Substances 0.000 claims description 41
- 230000007547 defect Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention discloses a magnetic control nail gun. The magnetic control gun is composed of a control coil, an iron core, an armature, a push rod, a reset spring and a control circuit for controlling the control coil to be switched on or switched off; one end of the armature is fixed with the push rod, the control coil is arranged in the iron core with a frustum cone-like section, the control coil centre is formed with a channel for enabling the armature and the push rod to move transversely; and one end of the reset spring is fixed on the iron core while the other end is fixed at a tail end of the armature. The coil turns are gradually reduced in a travel direction unit distance of the control coil armature. The coil turns in the control coil unit distance is in proportion to an air gap length. The magnetic control nail gun overcomes the defects of the traditional pneumatic nail gun, has small volume, light weight, simple structure, convenience in operation, low failure rate and long service life.
Description
Technical field
The present invention relates to a kind of iron nail be hammered into electric tool in woodenware or other material members, relate in particular to a kind of magnetic control nail rifle.
Background technology
At present carpenter, the used nail rifle of repairs profession all adopt " pneumatic nail gun ", and this nail gun system comprises two parts, and one is an air compressor, and it two is a pneumatic nail gun.Its operation principle is: air compressor produces the interior compressed air of pressure prescribed limit after connecting power supply, by an appendix compressed air is imported pneumatic nail gun then, behind the interior switch open of nail rifle, compressed air promotes the piston motion of nail rifle inside cylinder, and the push rod that is connected on the piston hammers into iron nail in the woodenware.Such pneumatic nail gun system bulk is big, and price is expensive, and transportation inconvenience is used trouble, and very easily entered the air that contains excess amount of dust in the piston, increases maintenance load.
Summary of the invention
The objective of the invention is: provide a kind of and utilize hot-wire coil that armature is produced electromagnetic attraction directly to promote iron nail and hammer into electric tool in the woodenware.
The present invention is as follows by the following technical programs: constitute by control coil, iron core, armature, push rod, back-moving spring and in order to the control circuit that the control control coil is switched on or switched off power supply and form; Armature one end is push rod fixedly, and control coil is arranged at the cross section and is in the iron core of truncated cone-shaped, is formed centrally in the control coil in order to make the laterally passage of operation of armature and push rod, and back-moving spring one end is fixed on the iron core, and the other end is fixed in the armature end.
Control circuit of the present invention is made of socket, bridge rectifier, control coil, first resistance to the, five resistance, filter capacitor, speed-up capacitor, charging capacitor, first triode, second triode, gauge tap, first diode, second diode; Socket connects civil power, output connects the bridge rectifier input, the bridge rectifier output also connects filter capacitor, speed-up capacitor and the first resistance parallel branch, one termination filter capacitor, the other end connects the filter capacitor other end after being connected in series first diode, speed-up capacitor with connect first transistor collector after the first resistance parallel branch other end is connected in series control coil simultaneously, first resistance and control coil series arm two ends also are connected to second diode, the second resistance cross-over connection is between the common junction and second transistor base of the control coil and first transistor collector, the 3rd resistance, the 4th resistance is connected to first respectively, the base of second triode, between emitter-base bandgap grading, gauge tap is connected to the base of second triode, between emitter-base bandgap grading; The charging capacitor cross-over connection is between first transistor base and second transistor collector, and the 5th resistance connects the colelctor electrode of second triode, is its collector load resistor.
The direct of travel unit distance interior loop number of turn of control coil armature of the present invention reduces gradually.
The number of turn of control coil unit distance interior loop of the present invention is directly proportional with air-gap length.
The present invention has overcome the defective of traditional, pneumatic nail rifle because of need configuration air compressor, and volume is little, and is in light weight, simple in structure; Overcome traditional, pneumatic and followed closely the defective that rifle need be paid close attention to air compressor air pressure at any time, easy to operate, safe and reliable; Also avoided the generation of traditional, pneumatic nail rifle because of faults such as cylinder wear, air are impure simultaneously, fault rate is low, long service life.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the circuit diagram of control circuit of the present invention.
The specific embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in detail.
The present invention constitutes by control coil 1, unshakable in one's determination 2, armature 3, copper push rod 4, back-moving spring 5 and in order to the control circuit that control control coil 1 is switched on or switched off power supply and forms.
Armature 3 one ends are push rod 4 fixedly, and control coil 1 is arranged at the cross section and is in the iron core 2 of truncated cone-shaped, is formed centrally in the control coil 1 in order to make the laterally passage 6 of operation of armature 3 and push rod 4, and back-moving spring 5 one ends are fixed on unshakable in one's determination 2, and the other end is fixed in armature 3 ends.
Control circuit is made of socket F, bridge rectifier D, control coil 1, first to the 5th resistance R 1-R5, filter capacitor C1, speed-up capacitor C2, charging capacitor C3, first, second triode BG1, BG2, gauge tap K, first, second diode D1, D2.
Socket F connects civil power, output connects bridge rectifier D input, bridge rectifier D output also meets filter capacitor C1, speed-up capacitor C2 and first resistance R, 1 parallel branch, one termination filter capacitor C1, the other end connects the filter capacitor C1 other end after being connected in series the first diode D1, speed-up capacitor C2 with connect the first triode BG1 colelctor electrode after first resistance R, the 1 parallel branch other end is connected in series control coil 1 simultaneously, first resistance R 1 is with control coil 1 series arm two ends and be connected to the second diode D2,2 cross-over connections of second resistance R are between the common junction and the second triode BG2 base stage of the control coil 1 and the first triode BG1 colelctor electrode, the 3rd resistance R 3, the 4th resistance R 4 is connected to first respectively, the second triode BG1, the base of BG2, between emitter-base bandgap grading, gauge tap is connected to the base of the second triode BG2, between emitter-base bandgap grading.Charging capacitor C3 cross-over connection is in the first triode BG1 base stage and the second triode BG2 inter-collector, and the 5th resistance connects the colelctor electrode of the second triode BG2, is its collector load resistor.
The direct of travel unit distance interior loop number of turn of control coil 1 armature reduces gradually.The number of turn of control coil 1 unit distance interior loop is directly proportional with air-gap length.
Reason is as follows: the initial density of supposing coil high order end among Fig. 1 is n.The function of density increase is K(K＞0 from left to right), then the loop density expression formula is: (n
0+ KX)
The number of turns is the coil groups A of n in the unit distance if having in the middle of air-gap L, and its centre-to-centre spacing left end magnetic pole is X, is (L-X) apart from the armature front end, and experimental result is as follows:
Calculate visible hot-wire coil of the present invention by following formula, when X → L, promptly at the armature left end, total magnetic intensity is maximum, and its size is directly proportional with current strength I, and multiply by the air-gap length L with the function K of loop density increase and add initial density n
0After be directly proportional.
Operation principle of the present invention is: produce magnetic field behind the coil electricity, main flux will constitute the closed-loop path by iron core, armature, air-gap, to armature generation electromagnetic attraction from right to left, and the push rod that is connected on the armature be hammered into iron nail in the woodenware.Because of square being inversely proportional to of the length of the size of electromagnetic attraction and air-gap, armature apneusis power of air-gap when right-hand member is very little, armature from right to left during traveling process electromagnetic attraction increase rapidly, cause whole stroke electromagnetic suction unbalanced.
The winding method of control coil of the present invention is: the number of turns of unit distance interior loop is directly proportional with the length of air-gap.The number of turns that is the unit distance interior loop reduces gradually with the direct of travel of armature.Armature is when right-hand member, and main flux is because air gap is long, and the attraction of generation is little, but near the number of turns of the coil of armature top this moment is many, and a large amount of leakage magnetic fluxs directly constitute the loop through armature top, produce the electromagnetic attraction that is caused by leakage magnetic flux greatly.And when armature walked to left end, because air gap is little, main flux can produce big suction, can make armature reach balanced at the whole electromagnetic attraction of traveling process from right to left like this.
Armature is about tens of milli paper money actuation time from right to left, and coil should cut off the power supply electromagnetic attraction is disappeared afterwards, and armature then can rely on the elastic force of spring to get back to right-hand member, for next one action ready.The present invention utilizes the energising and the outage of monostable circuit control coil.Speed-up capacitor C3 can improve coil current and be upgraded to peaked speed by zero.The perdurabgility of charging capacitor C3 and the temporary stable state of the 5th resistance R 5 decisions.The first triode BG1 ends when circuit is in stable state, the second triode BG2 saturation conduction, coil losing electricity and do not have electromagnetic attraction.When gauge tap K is connected on stable state between the base stage and emitter stage of the saturation conduction pipe second triode BG2, the big electric current that can utilize little Current Control coil to pass through like this.After gauge tap K closure, the second triode BG2 ends owing to base stage and emitter stage short circuit, power supply charges to charging capacitor C3 through the 5th resistance R 5, the first triode BG1 base stage and emitter stage, the first triode BG1 produces base current, make it become saturation conduction by ending, and make coil electricity produce electromagnetic attraction, and armature moves from right to left, and the push rod that is connected on the armature hammers into woodenware with iron nail.Meanwhile, charging capacitor C3 is because charging back both end voltage raises rapidly, and charging current constantly reduces, and the first triode BG1 is ended by saturated becoming again behind tens of approximately milli paper money.Coil does not have electromagnetic attraction because of dead electricity, and armature comes back to right-hand member because of spring force.Become the moment that ends by saturation conduction at the first triode BG1, big electric current moment vanishing by coil, the coil two ends will induce the high negative positive surge voltage down of going up, and the method that solves is fly-wheel diode in parallel or resistance capaciting absorpting circuit at the coil two ends usually.The push rod that the present invention utilizes electromagnetic attraction to make and is connected on the armature directly hammers into iron nail in the woodenware, and the first triode BG1 two ends are born voltage and will be higher than surge voltage.Therefore the present invention meets first, second diode D1, D2 respectively at the coil two ends, its objective is negative positive down surge voltage on the control coil two ends is charged to filter capacitor C1, speed-up capacitor C2 simultaneously through first, second D1, D2, electric energy is fed back again to power supply.Because the C1 capacity is bigger, the surge voltage on the control coil 1 is clamped down near supply voltage.At this moment, the voltage that is added between the first triode BG1 colelctor electrode and the emitter stage is filter capacitor C1, speed-up capacitor C2 and control coil 1 three's series voltage, because filter capacitor C1 is opposite with speed-up capacitor C2 polarity of voltage, and the voltage clamp at coil two ends is near supply voltage, so the voltage that the first triode BG1 bears still is supply voltage, avoids the danger because of high-voltage breakdown.Close when K switch this moment and have no progeny, the second triode BG2 obtains base current and saturation conduction again.Circuit reenters stable state, and the voltage of charging capacitor C3 is also by BG2,3 discharges of the 3rd resistance R, for next one action is got ready.
The present invention gets electric back monostable circuit and is in stable state, and the first triode BG1 ends, the second triode BG2 saturation conduction, and this moment, coil did not have electromagnetic attraction because of dead electricity, and armature is because spring action is in right-hand member.After gauge tap K closure, BG2 is because of base stage and emitter stage short circuit, become by saturation conduction and to end, power supply charges to charging capacitor C3 through the 5th resistance R 5, first triode BG1 base stage and the emitter stage, make the first triode BG1 produce base current, the first triode BG1 becomes saturation conduction by ending, and coil electricity produces electromagnetic attraction, and armature is advanced from right to left, the push rod that is connected with armature hammers into woodenware with iron nail, and this process is about tens of milliseconds.Meanwhile, charging capacitor C3 raises because of charging causes both end voltage, charging current reduces by the first triode BG1 base current and descends, the first triode BG1 is become by saturation conduction to be ended, coil blackout and lose electromagnetic attraction, armature comes back to right-hand member because of spring action, for next one action is got ready.After hand control switch K disconnected, the second triode BG2 is saturation conduction again, and circuit comes back to stable state, and charging capacitor C3 also is that next action is ready by the second triode BG2 and 3 discharges of the 3rd resistance R.
Claims (4)
1. magnetic control nail rifle is characterized in that: constitute by control coil, iron core, armature, push rod, back-moving spring and in order to the control circuit that the control control coil is switched on or switched off power supply and form; Armature one end is push rod fixedly, and control coil is arranged at the cross section and is in the iron core of truncated cone-shaped, is formed centrally in the control coil in order to make the laterally passage of operation of armature and push rod, and back-moving spring one end is fixed on the iron core, and the other end is fixed in the armature end.
2. magnetic control nail rifle according to claim 1, it is characterized in that: control circuit is made of socket, bridge rectifier, control coil, first resistance to the, five resistance, filter capacitor, speed-up capacitor, charging capacitor, first triode, second triode, gauge tap, first diode, second diode; Socket connects civil power, output connects the bridge rectifier input, the bridge rectifier output also connects filter capacitor, speed-up capacitor and the first resistance parallel branch, one termination filter capacitor, the other end connects the filter capacitor other end after being connected in series first diode, speed-up capacitor with connect first transistor collector after the first resistance parallel branch other end is connected in series control coil simultaneously, first resistance and control coil series arm two ends also are connected to second diode, the second resistance cross-over connection is between the common junction and second transistor base of the control coil and first transistor collector, the 3rd resistance, the 4th resistance is connected to first respectively, the base of second triode, between emitter-base bandgap grading, gauge tap is connected to the base of second triode, between emitter-base bandgap grading; The charging capacitor cross-over connection is between first transistor base and second transistor collector, and the 5th resistance connects the colelctor electrode of second triode, is its collector load resistor.
3. magnetic control nail rifle according to claim 1 and 2, it is characterized in that: the direct of travel unit distance interior loop number of turn of control coil armature reduces gradually.
4. magnetic control nail rifle according to claim 1 and 2, it is characterized in that: the number of turn of control coil unit distance interior loop is directly proportional with air-gap length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101880147A CN102248518A (en) | 2011-07-06 | 2011-07-06 | Magnetic control nail gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101880147A CN102248518A (en) | 2011-07-06 | 2011-07-06 | Magnetic control nail gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102248518A true CN102248518A (en) | 2011-11-23 |
Family
ID=44976271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101880147A Pending CN102248518A (en) | 2011-07-06 | 2011-07-06 | Magnetic control nail gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102248518A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6598775B1 (en) * | 2002-08-30 | 2003-07-29 | Tung-Hsien Chen | Hammer head assembly for power hammer |
| US6857549B1 (en) * | 2003-11-21 | 2005-02-22 | Navtor Technology Corporation | Nail driving gun with a shock-absorbing member |
| CN200948575Y (en) * | 2006-09-18 | 2007-09-19 | 李中好 | Electromagnetic power actuated setting device |
| US20090120243A1 (en) * | 2007-11-08 | 2009-05-14 | Andres Nemeth | Nail and anchor driver |
| CN201808037U (en) * | 2010-03-19 | 2011-04-27 | 黄道兴 | Electromagnetic nail gun |
| CN202155862U (en) * | 2011-07-06 | 2012-03-07 | 付国华 | Magnetic control nail gun |
-
2011
- 2011-07-06 CN CN2011101880147A patent/CN102248518A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6598775B1 (en) * | 2002-08-30 | 2003-07-29 | Tung-Hsien Chen | Hammer head assembly for power hammer |
| US6857549B1 (en) * | 2003-11-21 | 2005-02-22 | Navtor Technology Corporation | Nail driving gun with a shock-absorbing member |
| CN200948575Y (en) * | 2006-09-18 | 2007-09-19 | 李中好 | Electromagnetic power actuated setting device |
| US20090120243A1 (en) * | 2007-11-08 | 2009-05-14 | Andres Nemeth | Nail and anchor driver |
| CN201808037U (en) * | 2010-03-19 | 2011-04-27 | 黄道兴 | Electromagnetic nail gun |
| CN202155862U (en) * | 2011-07-06 | 2012-03-07 | 付国华 | Magnetic control nail gun |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20111123 |