The present application provides a hot melt gun including a housing having a cavity, a heating assembly mounted within the cavity and a connecting rod, wherein the housing is provided with a first through port; the heating assembly extends out of the housing from the first through port; and the connecting rod is a poor conductor of heat, and both ends thereof are respectively connected to the housing and the heating assembly, and the heating assembly is spaced apart from the housing. According to the hot melt gun provided by the present application, the heating assembly is spaced apart from the housing, a poor conductor of heat is selected as a connecting rod, the heating assembly is connected to the housing, the overall structure is simple and stable, the heat generated by the heating assembly during processing directly acts on the glue stick.

A method of repairing a first automotive part that includes providing a connector tab and applying a fluidic thermoplastic material to the connector tab and/or the first automotive part to attach the connector tab to the first automotive part. The connector tab comprises: a retainer portion sized to attach to the first automotive part, wherein the retainer portion has a plurality of holes formed therethrough, and wherein the plurality of holes is configured to receive the fluidic thermoplastic material to secure the retainer portion to the first automotive part; and a coupler portion defining a shape corresponding to a portion of the first automotive part, the coupler portion forming a coupler, which is configured to operably engage another coupler of a second automotive part.

A three-dimensional drawing device can include a housing configured for to be held in user's hand, shaped to allow manipulation of the housing like a pen, and configured to accept a strand of thermoplastic material. The drawing device has a nozzle assembly with an exit nozzle and a motor connected to a gear train that engages the strand such that rotation of the motor causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object. The motor can be controlled using a variable speed control mechanism or first and second actuators, thereby controlling movement of the strand, for example, to advance or retract the strand relative to the nozzle assembly.

A timed glue gun includes a glue pushing unit including a trigger, a glue pushing member and a heating member for melting the hot melt glue stick ,and a control unit including a timing member and an alarm member. The trigger is at a released position, and is operable to be pressed to a triggered position. The timing member starts to count upwards from zero when the heating member starts to heat up, and controls the alarm member to emit a first alarm signal when counting to a first elapsed time. The alarm member emits a second alarm signal when the timing member counts to a second elapsed time longer than the first elapsed time in response to continuous location of the trigger at the released position for the second elapsed time during heating of the heating member.

A hot melt glue gun with a base includes a hot melt glue gun and an auxiliary base detachably mounted to the hot melt glue gun. The hot melt glue gun includes a bottom. The bottom is flat and includes two lateral sides. Each of the two lateral sides of the bottom includes a groove and a coupling groove in communication with the groove.

The auxiliary base includes a base body having a flat bottom and two arms extending from the flat bottom. Each of the two arms includes a coupling block. Each coupling block is detachably coupled with one of the coupling grooves.

A hot melt glue gun with an automatic glue stick feeding structure includes a gun-shaped housing, a press button, an automatic glue stick feeding device, a hot melt unit, a nozzle, and a control unit. The automatic glue stick feeding device includes a casing and a synchronous motor having a transmission shaft. The casing includes a transmission gear, an inlet, and at least one gear train having upper and lower gears and a passage. The control unit includes a control printed circuit board, a micro switch, a forward relay output control portion, and a rearward relay output control portion. A glue stick is moved forwards when a user slightly presses the press button. When the press button is not pressed, the glue stick moves rearwards, avoiding continuous dripping of the molten glue through a nozzle.

A hot melt glue gun with an automatic glue stick feeding structure includes a gun-shaped housing, a press button, an automatic glue stick feeding device, a hot melt unit, a nozzle, and a control unit. The automatic glue stick feeding device includes a casing and a synchronous motor having a transmission shaft. The casing includes a transmission gear, an inlet, and at least one gear train having upper and lower gears and a passage. The control unit includes a control printed circuit board, a micro switch, a forward relay output control portion, and a rearward relay output control portion. A glue stick is moved forwards when a user slightly presses the press button. When the press button is not pressed, the glue stick moves rearwards, avoiding continuous dripping of the molten glue through a nozzle.

An electric hot melt glue pen for melting a glue stick includes a pen housing having a stick passage, a heating assembly including a heating tube and a heating sleeve layer which is wound around the heating tube for heating the heating tube, a control assembly including a control circuit board, and a driving assembly arranged to drive the glue stick to move forward toward the heating tube along the stick passage.

A three-dimensional (3D) drawing pen can include a housing that has a port that permits insertion of a strand of material into the housing. The strand can be moved through the housing toward a nozzle assembly configured to permit the strand to be extruded out of the 3D drawing pen in a form that retains its shape against gravity in free space to draw a 3D object.

An apparatus comprising a three-dimensional (3D) drawing pen can permit a user to draw a 3D object in free space that retains its shape against gravity. The 3D drawing pen can include a body, a sensor supported by the body, a motor, and a nozzle assembly disposed at a distal end of the body. The motor can drive material toward the nozzle assembly upon actuation by the sensor. The nozzle assembly can include an extruder and an exit nozzle. The extruder can have a heating element for melting material and permitting the material to be extruded out of the exit nozzle in a solid form upon actuation of the motor by the sensor. The user can manipulate the 3D drawing pen to draw a 3D object that retains its shape against gravity.