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CN-116174264-B - Electric glue gun and rack driving device

CN116174264BCN 116174264 BCN116174264 BCN 116174264BCN-116174264-B

Abstract

The invention provides an electric glue gun, which comprises a gun body, wherein a motor controlled by a button switch is arranged in the gun body, the motor is connected with a speed reducing mechanism, the tail end of the motor is provided with an output shaft, a driving gear is sleeved around the output shaft, the outer end of the output shaft is provided with a sun gear, a planet carrier combined with a plurality of planet gears is arranged beside the driving gear, the inner side and the outer side of each planet gear are respectively meshed with the sun gear and a clutch gear ring which can be switched between a fixed state and a free rotation state, a rack which is meshed with the driving gear is arranged on the gun body in a penetrating way, and the rack can be released and pulled back to be reset after the driving gear is pushed by the driving gear through switching the state of the clutch gear ring.

Inventors

  • LI YISONG
  • ZHANG LIJIANG

Assignees

  • 车王电子(宁波)有限公司

Dates

Publication Date
20260508
Application Date
20211126

Claims (10)

  1. 1. An electric glue gun, comprising: a shell comprising a gun body and a grab handle connected to the bottom of the gun body; the rubber cylinder bracket is connected to the front end of the gun body; A control device, a button switch is arranged on the front side of the grab handle; A rack driving device arranged in the gun body and provided with a motor controlled to start by the button switch, the motor is connected with a transversely arranged speed reducing mechanism, the tail end of the speed reducing mechanism is provided with an output shaft, the outer end of the output shaft is provided with a sun gear, a driving assembly is rotatably sleeved around the output shaft and comprises a driving gear and a planet carrier concentrically combined with the side of the driving gear, the driving gear is rotatably sleeved on the output shaft, the planet carrier is combined with a plurality of rotatable planet gears, the sun gear is meshed with the inner side of each planet gear, the outer side of each planet gear is meshed with a clutch gear ring, the clutch gear ring can be switched between a first state with fixed position and a second state with free rotation, and The rack can penetrate the gun body in a forward and backward direction, the rack is meshed with the driving gear of the driving assembly, and the front end of the rack penetrates the rubber cylinder bracket from the gun body forward.
  2. 2. The electric glue gun according to claim 1, wherein the outer peripheral surface of the clutch ring is provided with at least one key slot, a circular rotating groove is formed in the housing, the clutch ring is rotatably arranged in the rotating groove, a transversely extending track is arranged at one side around the rotating groove, the track is provided with a notch, the notch is at least partially communicated with the rotating groove, a key block is arranged on the track, part of the key block protrudes out of the notch, the key block can transversely move between a first position and a second position, and the part of the key block protruding out of the notch is embedded into the key slot of the clutch ring when in the first position, so that the clutch ring is in a first state.
  3. 3. The electric glue gun according to claim 2, wherein the front end face of the gun body is provided with a front hole, the rear side of the gun body is provided with a rear hole, the rack driving device is provided with a gear box, the gear box is provided with a middle shell, a front disc and a motor seat which are respectively connected with the front side and the rear side of the middle shell, the front disc is embedded in the front hole, the middle shell is internally provided with a mounting space, the rotary groove is formed on one side of the middle shell and is internally communicated with the mounting space, the middle shell and the front disc penetrate through a rack hole which linearly extends along the front-rear direction, a part of the rack hole penetrates through the top side of the mounting space, the top side of the driving gear extends into the rack hole, the rack penetrates through the rack hole and is meshed with the top side of the driving gear, the rear end of the rack penetrates out backwards from the rear hole, and the motor is combined with the motor seat, and the speed reducing mechanism is arranged in the mounting space.
  4. 4. The electric glue gun according to claim 3, wherein a deflector rod hole is transversely penetrated through the gun body, a rotary groove sealing cover is combined on the outer side of the rotary groove, a convex part is formed on one side around the rotary groove sealing cover, a groove body transversely penetrated through the track is formed in the track, the convex part seals the outer end of the groove body and can be used for accommodating the part of the key block protruding out of the notch, a spring is arranged on the groove body, two ends of the spring are respectively abutted against the key block and the convex part in a compressed mode, a pressing part is protruded towards the inner end of the groove body by the key block, a deflector rod is penetrated through the deflector rod hole, a poking piece is extended on the part of the deflector rod positioned in the gun body, the free end of the poking piece transversely stretches into the inner end of the groove body, and when the deflector rod is transversely poked, the poking piece presses the pressing part of the key block, the key block is moved to the second position and separated from the key groove, and the clutch ring is released to enable the clutch ring to be in the second state.
  5. 5. The electric glue gun according to claim 3 or 4, wherein a pull handle is combined with the rear end of the rack, a top seat is arranged on the middle shell, a penetrating rod extends backwards from the top seat, a cover is sleeved on the penetrating rod, a spring is sleeved on the penetrating rod, part of the spring is accommodated in the cover, an abutting part extends backwards from the cover and protrudes backwards out of the rear end of the rack hole and is positioned right in front of the front end edge of the pull handle, a trigger rod extends forwards from one side of the cover, a micro switch is arranged beside the top seat, and a press button is arranged on the micro switch and can be pressed when the trigger rod moves forwards along with the cover, and the micro switch is triggered to force the motor to stop running.
  6. 6. The electric glue gun according to any one of claims 1 to 4, wherein a side opening is provided at one side of the gun body, a control circuit board is provided in the housing, the push button switch and the motor are electrically connected to the control circuit board, respectively, and a speed adjusting knob is combined to the control circuit board, a portion of the speed adjusting knob extends out of the side opening, and the speed adjusting knob is used for controlling the rotation speed of the motor.
  7. 7. The electric glue gun of any one of claims 1 to 4, wherein the reduction mechanism comprises more than one set of planetary gear sets connected in sequence.
  8. 8. A rack drive device, characterized by comprising: The gear box is provided with a middle shell, a front disc and a motor seat, wherein the front disc and the motor seat are respectively connected to the front side and the rear side of the middle shell; A motor, which is combined with the motor seat; The speed reducing mechanism is transversely arranged in the installation space and connected with the motor, the tail end of the speed reducing mechanism is provided with an output shaft, and the outer end of the output shaft is provided with a sun gear; A driving assembly rotatably sleeved on the output shaft and having a driving gear and a planet carrier concentrically combined with the side of the driving gear, the driving gear rotatably sleeved on the output shaft, the planet carrier combined with a plurality of rotatable planet gears, the sun gear engaged with the inner side of each planet gear, the top side of the driving gear extending into the rack hole, and The clutch gear ring is arranged in the installation space and meshed with the outer side of each planetary gear, and the clutch gear ring can be switched between a first state with fixed position and a second state capable of freely rotating.
  9. 9. The rack driving device as claimed in claim 8, wherein at least one key groove is formed on an outer circumferential surface of the clutch ring, a circular rotating groove is formed on one side of the middle case and the inside of the circular rotating groove is communicated with the installation space, the clutch ring is rotatably disposed in the rotating groove, a rail extending transversely is disposed on one side around the rotating groove, the rail is provided with a notch at least partially communicated with the rotating groove, a key block is disposed on the rail, a part of the key block protrudes out of the notch, the key block can move transversely between a first position and a second position, and a part of the key block protruding out of the notch in the first position is embedded into the key groove of the clutch ring to enable the clutch ring to be in a first state.
  10. 10. The rack driving device as claimed in claim 9, wherein a rotary slot cover is combined to an outer side of the rotary slot, a boss portion is formed at a side around the rotary slot cover, a slot body is formed in the rail to transversely penetrate the rail, the boss portion closes an outer end of the slot body and is used for accommodating a portion of the key block protruding out of the slot opening, a spring is disposed at the slot body, two ends of the spring are pressed against the key block and the boss portion respectively, the key block protrudes toward an inner end of the slot body to form a pressing portion, and the pressing portion of the key block is used for being pressed by a toggle member.

Description

Electric glue gun and rack driving device Technical Field The invention relates to an electric tool, in particular to an electric glue gun and a rack driving device. Background The existing electric glue gun drives a rack to advance by an electric rack driving device in the gun body, a glue cylinder support is connected to the front end of the gun body, and a glue cylinder is arranged on the glue cylinder support. When the rack driving device drives the rack to push forwards, the rack can push the piston in the rubber cylinder forwards, and the glue solution in the rubber cylinder is pushed forwards out of the front end of the rubber cylinder for use. When the electric glue gun is used, in order to release the rack which advances to the limit position, the rack can be pulled back to the original position to push the piston in the glue barrel again, the driving gear of the rack is directly driven by the rack driving device to be provided with a clutch structure, but the motor, the planetary reduction gear set and the driving gear with the clutch structure of the existing rack driving device are respectively arranged at three different axial positions, so that the volume of the rack driving device is larger, and the machine body of the electric glue gun cannot be miniaturized. Disclosure of Invention Therefore, the present invention is directed to an electric glue gun with a coaxial speed reducing mechanism and a driving assembly for directly driving a rack, so as to reduce the volume occupied by the driving assembly and the clutch structure thereof, and achieve the effect of miniaturizing the electric glue gun. In order to achieve the above objective, the present invention provides an electric glue gun, comprising a housing, a glue cylinder bracket, a control device, a rack driving device, and a rack. The shell comprises a gun body, a grab handle connected to the bottom of the gun body, and a rubber cylinder bracket connected to the front end of the gun body. The control device is provided with a button switch at the front side of the grip. The rack driving device is arranged in the gun body and is provided with a motor controlled to be started by the button switch, the motor is connected with a transversely arranged speed reducing mechanism, the tail end of the speed reducing mechanism is provided with an output shaft, the outer end of the output shaft is provided with a sun gear, a driving assembly is rotatably sleeved around the output shaft and comprises a driving gear and a planet carrier concentrically combined with the side of the driving gear, the planet carrier is combined with a plurality of rotatable planet gears, the sun gear is meshed with the inner side of each planet gear, the outer side of each planet gear is meshed with a clutch gear ring, and the clutch gear ring can be switched between a first state with a fixed position and a second state with free rotation. The rack can penetrate the gun body in a forward and backward direction, the rack is meshed with the driving gear of the driving assembly, and the front end of the rack penetrates the rubber cylinder bracket from the gun body forward. In order to achieve the above objective, the present invention provides a rack driving device, which includes a gear box, a motor, a reduction mechanism, a driving assembly, and a clutch ring. The gear box is provided with a middle shell, a front disc and a motor seat, wherein the front disc and the motor seat are respectively connected to the front side and the rear side of the middle shell, an installation space is formed in the middle shell, a rack hole extending in a straight line along the front-rear direction is formed in the middle shell and the front disc in a penetrating mode, and part of the rack hole penetrates through the top side of the installation space. The motor is combined with the motor seat. The speed reducing mechanism is transversely arranged in the installation space and connected with the motor, the tail end of the speed reducing mechanism is provided with an output shaft, and the outer end of the output shaft is provided with a sun gear. The driving assembly is rotatably sleeved on the output shaft and is provided with a driving gear and a planet carrier concentrically combined with the side of the driving gear, the planet carrier is combined with a plurality of rotatable planet gears, the sun gear is meshed with the inner side of each planet gear, and the top side of the driving gear extends into the rack hole. The clutch gear ring is arranged in the installation space and meshed with the outer side of each planetary gear, and can be switched between a first state with fixed position and a second state capable of freely rotating. When the clutch gear ring is in the first state, the sun gear at the tail end of the speed reducing mechanism can drive each planetary gear of the driving assembly to rotate around the clutch gear ring, so that the driving assembly can rotate and drive