KR19990013249A - Electric silicone gun - Google Patents

Abstract

The present invention relates to a motor-driven silicone gun that automatically dispenses silicon.

The electric silicon gun has a silicone tube mounting portion at the front end and a body having a handle at the rear lower portion, and a pressure plate pressurizing the rear side of the silicone tube at the front end, and is installed to be able to move forward and backward on the rear upper portion of the body. And a pressure rod for discharging the silicon in the silicon tube attached thereto, and a means for moving the pressure rod forward and backward.

According to the silicon gun of the present invention having such a structure, the silicon can be automatically discharged through the motor or the solenoid when performing the bonding and sealing operation through the silicon, so that the silicon gun can be conveniently used and the silicon can be discharged without applying force. Since the silicon gun is not shaken, it has the effect of precise bonding and sealing work. In addition, there is an effect that can be used at the same time the silicon filled in a thin bag or tube by a silicon case provided in a new structure.

Description

Electric silicone gun

The present invention relates to a motor-driven silicone gun that automatically dispenses silicon.

Generally, silicone is used when bonding various members, such as fixing a glass window to a window frame, fixing a chassis to a wall, or blocking a hole or a gap.

The silicon used in this way is filled in a tube so as to be shielded from air as a liquid, and when used, it is discharged to a required portion by using a silicon gun to perform an adhesive or sealing operation.

This conventional silicon gun is equipped with a silicon-filled tube at the front end of the main body and equipped with a pressure rod to advance and retreat at the rear side, when used, the pressure rod is advanced to press the rear side of the tube so that the silicon-filled tube at the front end of the nozzle Discharge through.

However, since the silicon gun is operated manually, it is very difficult and inconvenient when discharging the silicon, and a large force must be applied when pressing the seal on the rear side, making it difficult to eject the silicon gun accurately to the required part. There is a disadvantage that precise bonding and sealing work is not possible.

Therefore, the present invention was devised to solve such a conventional problem, and an object thereof is to provide an electric silicon gun which can be used easily and conveniently by discharging silicon automatically.

1 is a perspective view of a silicon gun according to the present invention,

2 is a cross-sectional view showing the structure of a silicon gun according to the present invention;

3 is a perspective view of main parts of the silicone gun of the present invention;

Figure 4 is an exploded perspective view showing the structure of the reverse rotation gear of the reduction gear of the present invention,

5 is a motor speed change circuit for varying the motor speed of the silicon gun of the present invention;

6 is a structural diagram of a silicon gun of the present invention to be driven by a power drill,

7 is a cross-sectional view showing a structure of a pressure rod and a gear for retreating the same according to the first embodiment of the present invention;

8 is an enlarged cross-sectional view of the main part of FIG. 7;

9 is a structural diagram of a silicon gun according to a second embodiment of the present invention;

10 is a structural diagram when the pressure rod of FIG. 9 is advanced;

FIG. 11 is a structural diagram when the pressure bar of FIG. 9 retreats; FIG.

12 is a detailed view of the main part showing the structure of the current interrupt switch in FIG. 9;

13 is a structural diagram of a silicon gun according to a third embodiment of the present invention;

14 is a structural diagram of a silicon gun of a third embodiment driven by a power drill;

15 is a structural diagram of the mounting portion of the silicon tube and the silicon gun according to the fourth embodiment of the present invention;

FIG. 16 is a cross-sectional view illustrating main parts of FIG. 15. FIG.

*** Explanation of symbols for the main parts of the drawing ***

10: body 11: handle 12: mounting portion

13a, 13b: support plate 14: connecting bar 15a, 15b: support jaw

16 operating hole 17 support 20 pressure bar

21: pressure plate 22: guide groove 23: guide

30: nut gear 31: bush 40: motor

41: rotating shaft 42: drive gear 43: reduction gear

44 ring gear 45 locking jaw 46 rotating plate

47: gear 48: coil spring 49: ring

50: battery 51: button 52: switch

53a, 53b: first and second variable resistance switch 53c: analog switch

54: direction ring button 130: electric drill 131: band

132: Chuck 134: axis of rotation

(Fig. 7) (Fig. 8)

60: pressure rod 61: rack gear 62: guide groove

63: jamming jaw 64: slide 65: roller

66: bracket 67: release lever 70: worm gear

71: pinion gear

(FIG. 9) (FIG. 10) (FIG. 11) (FIG. 12)

80: pressure rod 81: operating plate 82: hole

83: spring 84: retraction prevention plate 85: hole

86: spring 87: locking step 88: current cut off switch

90: solenoid

(Fig. 13) (Fig. 14)

92: cam 93: cam surface

(Figure 15) (Figure 16)

100: case 101: locking projection 110a, 110b: cap

111: fixing groove 112: nozzle 113: flange

114: guide portion 120: support tube 121: locking projection

The electric silicon gun of the present invention for achieving the above object has a silicon tube mounting portion in the front portion and the main body is provided with a handle on the rear lower portion; A pressure rod having a pressure plate for pressing the rear side of the silicon tube at the front end thereof and capable of forward and backward moving on the upper rear side of the main body to discharge silicon in the silicon tube mounted on the silicon tube mounting unit; It consists of a means for advancing and retracting the pressure bar back and forth.

Hereinafter, the structure of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a silicone gun according to the present invention, Figure 2 is a cross-sectional view showing the structure of the silicone gun according to the present invention, as shown the silicone gun is framed body 10, and the front and rear from the top of the body The pressure rod 20 pressurizes the silicon tube 6 to discharge the silicon while advancing, and the apparatus automatically moves the pressure rod 20 forward and backward.

The main body 10 is provided with a silicon tube mounting portion 12 that supports the front and rear portions of the silicon tube 6 at the distal end of the silicon tube 6, and the handle 11 is provided at the rear lower portion. On both sides of the silicon tube mounting portion 12, support plates 13a and 13b for supporting and fixing the front and rear portions of the tube 6 are connected by a connecting bar 14. The front support plate 13a has a circular ring shape with an upper opening and a center penetrated so that the nozzle 7 of the silicon tube 6 can be placed thereon. A supporting jaw 15a for supporting the tip circumference of (6) is formed. In addition, the rear support plate 13b is bent forward to support the rear end side of the silicon tube 6, and a hole through which the pressure rod 20 passes is formed at the center thereof.

The pressure rod 20 has a screw rod structure as shown in FIG. 3, and guide grooves 22 are formed at both sides thereof in the axial direction. The pressure bar 22 is coupled to a pressure plate 21 whose tip is inserted into the rear support plate 13b of the silicon tube mounting portion 11 to press the rear side of the silicon tube 6. And the main body 10 is provided with a support 17 for supporting the pressure bar 20 spaced apart at a predetermined interval back and forth, and guides the pressure bar 20 corresponding to the guide groove 22 on both sides of the support 17. A guide 23 is provided. Therefore, the pressure rod 20 is firmly supported, so that the forward and backward operation is made stably.

On the other hand, between the support portion 17 for supporting the pressure bar 20, a thread is formed therein, the outer circumferential surface of the nut gear 30 having a gear is coupled to the outer circumference of the pressure bar 20. The front and rear surfaces of the nut gear 30 are provided with a bush 31 supported by the main body 10 to enable rotation.

The motor 40 is installed in the main body 10 under the nut gear 30. A drive gear 42 is provided at the end of the rotation shaft 41 of the motor 40, and a reduction gear 43 is engaged between the drive gear 42 and the nut gear 30.

On the other hand, the reduction gear 43 is a reverse rotation gear consisting of two bodies as shown in FIG. One body of the reverse rotation gear has a gear tooth meshing with the nut gear 30 on the outer circumferential surface and a locking jaw 45 is formed on one side of the open side and the open side of which is freely rotated on the shaft. And the other body is formed with a rotating plate 46 inserted into the open side of the ring gear 44, and is engaged with the drive gear 42 on the surface of the rotating plate 46 opposite to the ring gear 44. The gear 47 is formed integrally. A coil spring 48 is bent between the ring gear 44 and the rotary plate 46 to form a ring 49. One end of the coil spring 48 is coupled to the rotary plate 46. The bent ring 49 is coupled to the locking projection 45 of the ring gear 44.

The trigger button 51 is provided in the upper part of the front part of the handle 11 of the main body 10, and the on / off switch 52 is provided in the inside. The switch 52 and the motor 40 are electrically connected to intercept power supplied from the outside to supply and cut off power to the motor 40. And inside the handle 11, the battery 50 is installed to rotate the motor 40 by the power supplied from itself, the battery 50 is preferably a nickel cadmium battery.

FIG. 5 is a circuit diagram of varying the motor rotation speed (approximately 0 to 5000 RPM) of the silicon gun of the present invention. As shown in FIG. When the variable signal is transmitted to the analog switch 53c through the switch 53b, the number of revolutions of the motor 40 is changed by varying the voltage supplied to the analog switch 53c by the signal. In this circuit, the motor 40 can be used for both direct current and alternating current.

These variable resistance switches 53a and 53b are operated by the pressure or the moving distance of the button 51. In addition, the upper main body 10 of the button 51 is provided with a direction switching switch 54 for changing the rotation direction of the motor 40. This directional switch 54 operates a device not shown in the figure for changing the direction of the current supplied to the motor 40. At this time, the current supplied to the redirection device should be a direct current.

The operating relationship of the electric silicon gun having such a structure is as follows.

The tube 6 filled with silicon is inserted into the front side of the rear support plate 13b with the nozzle 7 facing forward, and then the front end is pushed into the support plate 13a located at the tip. When combined in this way, the nozzle 7 is placed at the center of the support plate 13a of the front end, and the front and rear end sides thereof are supported by the support jaws 15a and 15b of the respective support plates 13a and 13b so as not to be separated from side to side. do.

In this state, when the button 51 installed on the front top of the handle 11 is pressed, the switch 52 installed therein is turned on, and electricity is supplied from an external power source or an internal battery 50 so that the motor 40 operates. do.

When the drive gear 42 installed at the rotary shaft 41 end by the operation of the motor 40 is rotated through the reduction gear 43 to rotate the nut gear 30. The rotating nut gear 30 advances the screwed pressure rod 20.

By the forward operation of the pressure bar 20, the pressure plate 21 installed at the front end pushes the rear side surface of the silicon tube 6. By this operation, the silicon filled in the tube 6 is discharged forward through the nozzle 7 under pressure. At this time, the button 51 is provided with variable resistance switches 53a and 53b, and the number of rotations of the motor 40 is adjusted by adjusting the amount of current supplied through the variable resistance switches 53a and 53b and the voltage regulating circuit. Since it is possible to vary the silicon discharge rate according to the size or shape of the bonding site or the sealing site, it is convenient.

In addition, if the operation of discharging the silicon is suspended, the residual pressure is continuously applied to the tube 6 even when the pressurizing rod 20 stops moving, and the silicon is discharged to the nozzle 7 until the residual pressure is completely dissipated. It is discharged and wastes. In order to prevent such unnecessary silicon discharge, the reduction gear 43 is formed as a reverse rotation gear. That is, when advancing by the motor 40, first, the coil spring 48 coupled to the rotating plate 46 is rotated, and then the locking jaw 45 of the ring gear 44 is rotated through the coil spring 48. . Since the ring gear 44 is not rotated well because the ring gear 44 has to rotate the nut gear 30, the coil spring 48 is compressed or relaxed, and when the compression force or the relaxation force of the coil spring 48 becomes large, the ring The gear 44 is rotated. When the operation of the pressure bar 20 is stopped while rotating as described above, the pressure bar 20 is slightly retracted by reverse rotation by the restoring elasticity of the coil spring 48 that has been compressed or tensioned. By this operation, the pressure in the silicon tube 6 is alleviated, thereby preventing the unnecessary discharge of silicon.

In addition, when the adhesion and sealing through the silicon is completed or the silicon in the tube 6 is completely consumed, the pressure rod 20 must be retracted to replace the tube 6. At this time, the rotation direction of the motor 40 is changed by operating the direction change switch 54 attached to the upper part of the button 51 of the handle 11 to change the direction of the current. As the power is transmitted to the nut gear 30 in the opposite direction by this operation, the pressure rod 20 which has been advanced is retracted, and after the retraction is completed, the silicon tube 6 is detached from the mounting part 12 of the silicon gun. Just do it.

FIG. 6 is a structural diagram of the silicon gun of the present invention driven by a power drill, and as shown, the driving unit of the silicon gun of the present invention may be used as a power drill. That is, after removing the handle 11 of the main body 10, the electric drill 130 is positioned on the lower portion of the main body 10 and is securely wound around the band 131. Then, the rotary shaft 134 having the drive gear 133 engaged with the reduction gear 43 is bitten on the chuck 132 of the electric drill, and the tip of the rotary shaft is fixed to the main body 10. In this way, the price of the silicon gun can be lowered and it is economical because the existing drill can be used.

7 is a cross-sectional view showing a structure of a pressure rod and a gear for advancing and retreating the rod according to the first embodiment of the present invention. As shown, a rack gear 61 is installed at a lower portion of the pressure rod 60 and a guide groove at an upper portion thereof. 62 is formed. A worm gear 70 is provided at the lower portion of the rack gear 61, and a pinion gear 71 is installed at the rear portion of the worm gear 70 to engage the reduction gear 43 having the structure described above. Power is received from 40). And the upper part of the pressure rod 60 is equipped with the apparatus which can be easily retracted manually when retracting the pressure rod 60. FIG. As shown in FIG. 8, the locking jaw 63 is formed at both sides of the upper end of the guide groove 62, and the slide 64 is installed inside the guide groove 62. It is composed of a separation lever 67 that is combined with 64 to lift the slide (64). Rollers 65 are provided on both lower sides of the slide 64 to minimize the frictional force between the pressure rod 60 and the slide 64. The rollers 65 protrude to both sides of the slide 64. Since the distance between the rollers 65 on both sides is greater than that of the locking jaw 63 of the guide groove 62, the roller 65 is caught by the locking jaw 63, so that the slide 64 of the guide groove 62 is closed. It is not allowed to escape to the outside.

In addition, a bracket 66 is installed at an upper portion of the slide 62, and the bracket 66 is hinged to a lower end of the separation lever 67 which is axially coupled with the main body 10 and rotated up and down at an upper portion thereof. When the upper end of the (67) is rotated, the slide 64 is lifted to the upper side and both the rollers 65 are caught by the engaging jaw 63 of the guide groove 62 to lift the pressure rod 60, the pressure rod 60 ) Is separated from the lower worm gear 70. By this operation, since the pressure bar 60 is easily retracted, the pressure bar 60 can be manually retracted. After fully retracting, when the separation lever 67 is returned to its original position, the pressure rod 60 is lowered to be engaged with the worm gear 70 so that the pressure rod 60 can be automatically advanced by using the motor 40. At this time, the silicon gun of the second embodiment may use a power drill as in the structure of FIG.

9 is a structural diagram of a silicon gun according to a second embodiment of the present invention. As shown in FIG. 9, the solenoid 90 is used instead of the motor 40 as a driving means for retreating the pressure rod 80 of the silicon gun. In order to use the power of the solenoid 90, the pressure plate 80 is provided with a moving plate 81 so as to be movable back and forth. The hole 82 of the operation plate 81 through which the pressure rod 80 penetrates has a size with a little margin than the pressure rod 80.

In front of the operation plate 81, a spring 83 for restoring the operation plate 81 is provided. And the lower part of the operating plate 81 is extended and the solenoid 90 is installed in the lower front. Since the elastic force of the spring 83 installed in the front is operated horizontally to the operating plate 81, the operating plate 81 is placed in a structure perpendicular to the pressure bar (80). In addition, a retraction prevention plate 84 having the same structure as the operation plate 81 is installed at the rear side of the pressure rod 80, and the front side is supported by the main body 10 to retreat the retraction prevention plate 84 ( 86 is elastically installed. And the locking step 87 is formed at the upper end of the rear end of the main body 10 and the end is bent downward so that the upper end of the anti-retraction plate 84 can no longer be retracted. Due to this structure, the retreat prevention plate 84 is pushed in the rearward direction by the spring 86, and the upper end is caught by the catching jaw 87 so as to be inclined in the rearward direction as shown in FIG. At this time, while the retraction prevention plate 84 has an inclination, the upper and lower ends of the holes 85 press the upper and lower surfaces of the pressure rod 80 to fix the pressure rod 80.

In this state, when the button 51 is pressed, electricity is applied to the solenoid 90 to generate a magnetic force, thereby sucking the lower portion of the operating plate 81. The operating plate 81 is advanced by the solenoid 90. At this time, the lower part is advanced first as shown in FIG. 10 by receiving resistance by the elastic force of the spring 83 installed at the front. For this reason, the operation plate 81 is inclined so that the upper and lower ends of the holes 82 press the upper and lower surfaces of the pressure rod 80 so that the friction force is maximized, thereby advancing the operation plate 80 without slipping. When the operation plate 80 is completed, the user releases the button 51 to turn off the switch 52. By this operation, the power supply to the solenoid 90 is cut off and thus the magnetic force is lost. In this case, the operation plate 80, which has been advanced, is quickly retracted by the elastic force of the spring 83.

At the same time, the anti-retraction plate 84 installed at the rear side has a state close to the pressure rod 80 as shown in FIG. 10 as opposed to the operation plate 81 when the pressure rod 80 moves forward. In this state, since the frictional force with the pressure rod 80 is minimized, the pressure rod 80 is easily advanced, and when the operating plate 81, which has been advanced by the solenoid 90, is retracted, the tube under pressure The pressure rod 80 is slightly retracted by the repulsive force of 6). At this time, as shown in FIG. 11, the retraction preventing plate 84 is retracted by the elastic force of the spring 86 and at the same time, the upper end is caught by the locking jaw 87. Since the inclined state again, the frictional force with the pressure rod 80 is increased, so that the pressure rod 80 does not retreat.

In addition, as shown in FIG. 12, the current interrupt switch 88 is installed at the forward completion position of the operation plate 81. The current interrupt switch 88 is configured to interrupt one power line supplied to the motor 40 when the operation plate 81 is advanced and contacts. When the operation plate 81 is completed by the solenoid 90 by this structure, the current blocking switch 88 operates to block the current supplied to the motor 40, so that the solenoid 90 loses its magnetic force. At this time, the operating plate 81 is inclined by the elastic force of the spring 83 to advance the pressure bar, while the operating plate 81 is in a state perpendicular to the pressure bar 80 again, and the frictional force with the hole 82 is removed. You will retreat. At the same time, since the operation plate 81 which contacted the current cut-off switch 88 is dropped, power is supplied to the solenoid 90 again. In this operation, the operation plate 81 is automatically moved back and forth.

On the other hand, when the silicon in the tube 6 is used to retreat the pressure rod 90, which has been advanced in order to replace it, push the lower portion of the anti-retraction plate 84 to the rear side of the main body 10 in front of the pressure rod ( 80) and the angle of retreat prevention plate 84 is kept close to the right angle. In this state, since the movement of the pressure rod 80 is free, moving the operating rod 80 to the rear side by hand makes it easy to retreat.

As this operation is repeated, the pressure rod 80 is advanced to discharge the silicon in the tube 6.

FIG. 13 is a structural diagram of a silicon gun according to a third embodiment of the present invention. Instead of the solenoid 90, as shown in FIG. 13, the motor 40 having the cam 92 installed at the end of the rotating shaft 41 may be used. That is, a cam 40 is installed on the rear side of the operation plate 81 and has an inclined surface 93 at the front end of the rotating shaft 41 of the motor 40 and is in close contact with the lower end of the operation plate 81. 92) was installed. With this structure, when electricity is applied by pressing the button 51, the motor 40 rotates to rotate the cam 92, and the lower end of the operation plate 81 is reciprocated back and forth by the inclined surface 93 of the cam 92. Done. As the operating plate 81 is reciprocated as described above, the pressure rod 80 operates in the same manner as the silicon gun shown in FIG. 9. In this case, as shown in FIG. 14, the electric drill 130 is fixed to the lower portion of the main body 10 by the band 131, and the rotary shaft 134 having the cam 92 on the chuck 132 is used to have a structure. It may be.

15 is a structural diagram of the mounting portion of the silicon tube and the silicon gun according to the fourth embodiment of the present invention.

The silicon may be provided by being filled in a tube 6 in which the nozzle 7 is integrally formed, or may be provided by being filled in a thin film bag 8. Because of this, the silicon guns are also distributed in different structures to use the silicon provided in different forms, so users who use them have no choice but to purchase and use each silicon gun.

Therefore, in order to be able to use all of the silicon provided in different structures as a single silicon gun, as shown in FIGS. 15 and 16, the case 100 has a cylindrical tube 6 and a pocket 8 inside thereof. And a cap 110a through which a hole into which the nozzle 112 of the case 100 is fitted is coupled to a front end of the case 100, and a fixing groove bent at a right angle while being opened to the rear side at the rear end ( 111 is formed, the rear cap 110b is coupled. The nozzle 112 coupled to the hole of the cap 110a of the tip portion has a flange 113 supported on the rear side of the hole at the rear side thereof, and a hopper-shaped guide 114 is integrally formed around the flange. Removably coupled from the inside to the front of the 110a.

In addition, a support tube 120 inserted into the rear cap 110b is installed at the front end of the main body 10 corresponding thereto, and on both sides of the support tube 120, a cap 110b at the rear side of the case 100 is provided. Protrusions 121 corresponding to the fixing grooves 111 formed on both sides are provided. When coupling the case 100 protrudes on both sides of the support tube 120 while inserting the support tube 120 of the main body 10 into the rear cap 110b coupled to the rear end of the case 100. The protrusion 121 is inserted into the fixing groove 121 formed at both sides of the rear cap 110b, and then rotated to position the protrusion 121 at the end of the bent fixing groove 111b. When combined in this way, the case 100 does not fall out.

If the silicon filled in the thin film bag 8 is used, the nozzle 112 is coupled to the hole of the cap 110a coupled to the front end of the case 100 with the nozzle 112 facing forward. Then, one end of the thin bag 8 is cut and then placed in the case 100 so that the cut portion is positioned inside the nozzle 112. Then, when the case 100 is coupled as described above and the motor 40 or the solenoid 90 is driven to advance the pressure bar 80, the pressure plate 21 installed at the tip of the pressure bar 80 is the case 100. Since the silicon is pressed, the silicon is discharged to the nozzle 112. At this time, the nozzle 112 is in close contact with the rear side of the cap due to the pressure applied to the silicon, silicon does not leak between the nozzle 112 and the cap (110a), moreover, both sides of the flange 113 Since there is a guide portion 114 formed in the silicon is easily discharged to the nozzle (112).

According to the silicon gun of the present invention as described above, when the adhesion and sealing work through the silicon can be automatically discharged through the motor or solenoid, it can be used conveniently and can discharge the silicon without applying force Since the silicone gun is not shaken, there is an effect that the precise bonding and sealing work can be performed.

In addition, there is an effect that can be used at the same time the silicon filled in a thin bag or tube by a silicon case provided in a new structure.

Claims (12)

A main body having a silicon tube mounting portion at the front portion and a handle at the rear lower portion thereof; A pressure rod having a pressure plate for pressing the rear side of the silicon tube at the front end thereof and capable of forward and backward moving on the upper rear side of the main body to discharge silicon in the silicon tube mounted on the silicon tube mounting unit; And a means for advancing the pressure rod back and forth. The pressure rod of claim 1, further comprising: a pressure rod of a screw rod structure having axial guide grooves on both sides thereof; A support part having a guide sliding in correspondence with the guide groove in the front and rear portions of the main body in a section which does not interfere with the operation of the pressure bar; A nut gear having a screw thread in the center thereof and screwed to an outer circumference of the pressure rod and rotatably installed in the main body to advance and retract the pressure rod by forward and reverse rotation; A reduction gear train engaged with the nut gear; A motor having a button for operating an on / off switch at the tip of the handle and receiving the internal or external power to drive the reduction gear train; A rotation direction switching device for controlling a rotation direction of the motor by changing a direction of current; And a reduction gear installed between the rotary shaft end of the motor and the nut gear. The pressure rod of claim 1, further comprising: a pressure rod having a rack gear formed thereon; A worm gear having a pinion to which power is transmitted to a rear side thereof and engaged with the rack ear of the pressure rod; A reduction gear train engaged with the pinion; A motor for installing a switch at the front end of the handle and receiving internal or external power by the switch to drive a reduction gear train; An electric silicone gun comprising a rotation direction switching device for changing the direction of the current to control the rotation direction of the motor. According to claim 3, wherein the upper side of the pressure bar has a guide groove having a locking jaw on both sides of the upper end with an axial direction, provided with a roller at a wider interval than the locking jaw of the guide groove on both sides and having a bracket on the top A slide flowing in the guide groove; When the shaft is rotatably coupled to one side and one end is hinged to the bracket of the slide to rotate the other side is provided with a separation lever for lifting the hinged slide to separate the pressure rod from the worm gear Electric silicone gun. According to claim 2 or 3, wherein any one gear gear of the gear gear is formed on the outer circumferential surface and the engaging projection is formed on one side of the inner surface ring gear free to rotate on the shaft; A spring having one side end bent and coupled to the locking protrusion; Reverse rotation consisting of a rotating plate having a rotary plate fixed to one side end of the spring fixedly coupled to the ring gear side surface while being rotated inside the ring gear and receiving power to the other side of the rotating plate to which the spring is coupled An electric silicone gun, which is a gear. The motor of claim 1, further comprising: a motor installed at a lower rear side of the main body to rotate by receiving external power by a switch; A cam having a front surface formed on an inclined surface and installed at an end of a rotation shaft of the motor; An operating plate having an upper end coupled to the outer circumference of the pressing rod so that the upper end is extended and the lower end is extended to be in close contact with the inclined surface of the cam; A restoring spring supported by the main body on the outer circumference of the front pressure bar of the operation plate to elastically move the operation plate to the rear side horizontally; The operating plate which is coupled to the outer circumference of the pressure bar when the hole at the top presses the upper and lower ends of the pressure bar to advance the pressure bar and retracts, and becomes a state perpendicular to the pressure bar by the spring, and slides and retracts on the pressure bar. ; A retraction prevention plate installed at a rear side of the pressure rod to flow therethrough; A spring supported on the rear side of the main body to apply an elastic force to the retraction prevention plate; At the top of the rear end of the main body is provided with a latching jaw extending in the rearward direction and the end is bent downward to restrain the upper end of the retreat prevention plate no longer retreat. And the retraction stopper is vertical to facilitate the advancement of the pressure rod when the motor is fixed. The solenoid according to claim 6, wherein the driving plate is driven forward and backward to the front of the operating plate, and when the switch is turned on, the solenoid retracts by the force of the spring by losing the magnetic force when the current flows through the operating plate. Electric silicon gun characterized by the above. 8. The motorized silicon according to claim 7, wherein a current interrupt switch is provided at a forward completion position of the operating plate to block a current supplied to the solenoid by a forward operation of the automatic plate. 8. A power supply and charging device according to any one of claims 2, 3, 6, and 7, which is installed inside a handle installed at a lower rear end of the main body and electrically connected to the motor and the switch. Electric silicon gun, characterized in that the battery is provided. 2. The electric silicon gun of claim 1, wherein the battery is a nickel cadmium battery. 2. The electric silicon gun of claim 1, wherein a device for changing the number of rotations of the motor by adjusting the voltage of the supplied power is built in. 2. The mounting portion according to claim 1, wherein the mounting portion has a cylindrical case, a front end of the case has a cap having a hole into which a nozzle is fitted, and a rear side has a cap having a fixing groove bent around a side surface. The front end of the main body on which the rod is projected is provided with projections on both sides of the electric silicone gun, characterized in that the projection is inserted into the fixing groove by the rotation of the cap is firmly coupled to the cap.