JP6984849B2 - Coating gun - Google Patents

Description

The present invention relates to a coating gun.

Patent Document 1 discloses a hand-held coating gun (hot melt gun) that discharges hot melt from a nozzle of a gun body. A heater is provided in the gun body to maintain the melted state of the supplied hot melt or to adjust the viscosity, and the hot melt is discharged from the nozzle in the melted state.

With this coating gun, it is necessary to connect a cable for supplying power to the heater to the gun body. When applying hot melt to the upper surface of a horizontally placed object to be coated, the hot melt is discharged downward from the nozzle, so in order to perform the application work efficiently, the cable is hung above the coating gun and installed. .. For that purpose, it is preferable to provide a receptacle derived from the heater on the upper surface of the gun body and connect a cable to the receptacle.

In addition, if a hook is provided on the upper surface of the gun body so that the hook can be hooked on a bracket or the like when the application of hot melt is interrupted or finished, the application gun can be hung and stored away from the object to be coated. Can be left.

Japanese Unexamined Patent Publication No. 61-38656

In order to improve the operability of the gun body, it is preferable to reduce the size and weight of the gun body. However, if the hook and receptacle are to be placed on the upper surface of the gun body as described above after the gun body is miniaturized, the hook must be made smaller. If the hook is made smaller, it will be difficult to hook it on the bracket, so countermeasures are desired.

The present invention has been completed based on the above circumstances, and an object of the present invention is to increase the size of the hook while reducing the size of the gun body.

The coating gun of the present invention is
A gun body equipped with a nozzle that discharges the coating agent,
A hook that protrudes from the outer surface of the gun body and can be hooked on a fixing member.
It is equipped with a receptacle that is derived from the device inside the gun body and to which a cable that conducts electricity is connected to the device.
The receptacle is provided on the hook.

Even if there is a limit to the allowable installation area of the hook and receptacle on the outer surface of the gun body, the size of the hook can be increased.

Perspective view of the coating gun of Example 1 Partial notch side view of the coating gun A plan sectional view of the front end of the body constituting the coating gun.

The present invention comprises a connecting portion provided on the gun body to which a hose for supplying the coating agent to the gun body is connected, and a connecting member connecting the hose connected to the connecting portion and the hook. May be provided. According to this configuration, it is possible to prevent twisting around the axis of the hose and deformation such as bending the axis of the hose.

INDUSTRIAL APPLICABILITY The present invention is provided on the gun body and is provided on the hook so as to be substantially parallel to the connection portion and the connection portion to which the hose for supplying the coating agent to the gun body is connected. It may be provided with a housing unit that can be accommodated. According to this configuration, the cable can be routed along the outer circumference of the hose, so that it is possible to prevent other members from interfering with the cable.

In the present invention, the contactable region of the hook with the fixing member may be made of a material softer than the fixing member. According to this configuration, when the hook hits the fixing member, it is possible to prevent the fixing member from being damaged or deformed.

INDUSTRIAL APPLICABILITY The present invention may include a mounting portion that opens to the bottom surface of the grip of the gun body and to which the receptacle can be mounted. According to this configuration, the receptacle can be selectively attached to one of the hook and the grip.

<Example 1>
Hereinafter, Example 1 embodying the present invention will be described with reference to FIGS. 1 to 3. The coating gun 10 of the first embodiment is a hand gun for applying the hot melt 35 (coating agent according to claim) to the surface of an object to be coated (not shown). The coating gun 10 includes a gun body 11, a nozzle 16 for discharging hot melt 35, a trigger 18, a hook 20, a heater 27 (the device according to claim), and a receptacle 30. .. In the following description, the front-back and up-down directions are based on the state in which the coating gun 10 is oriented to horizontally discharge the hot melt 35.

The gun body 11 includes a body 12 in the front-rear direction and a grip 14 extending downward from the rear end portion of the body 12. The body 12 is configured by assembling two parts, a front member 13F to which the nozzle 16 is attached and a rear member 13R integrally with the grip 14.

The front side member 13F can be assembled to the rear side member 13R into a top-out form shown by a solid line in FIG. 2 and a bottom-out form shown by an imaginary line in FIG. The lower-out form is a form in which the front member 13F is turned upside down with respect to the upper-out form. When the front member 13F is in the top-out form, the upper surface of the front member 13F has a form in which the internal space of the body 12 and the outside are communicated with each other, and a tubular connecting portion 15 is formed.

A hose 36 for supplying the material of the hot melt 35 to the gun body 11 can be connected to the connection portion 15. The axial direction of the connecting portion 15 is a direction extending diagonally upward and backward from the upper surface of the front member 13F. Therefore, the hose 36 attached to the connecting portion 15 extends diagonally upward and backward from the upper surface of the body 12.

A nozzle 16 is attached to the front end surface of the body 12 (front member 13F). As shown in FIG. 3, a flow path 17 of the hot melt 35 is formed at the front end portion in the body 12 so as to communicate with the nozzle 16. The flow path 17 is provided with a needle valve 19 that opens and closes by manual operation of the trigger 18.

A hook 20 is integrally formed on the upper surface of the rear member 13R constituting the body 12 of the gun body 11. The hook 20 has a hook hole 21 penetrating in the left-right direction. The side view shape of the hook 20 and the hook hole 21 is a substantially triangular shape with the upper surface of the body 12 as the base. The hook 20 has a form in which the hole edges of the hook holes 21 are connected over the entire circumference.

When the coating work by the coating gun 10 is interrupted or completed, the hooking hole 21 is hooked on the fixing member 38 such as a bracket provided in the coating booth, and the coating gun 10 is stored in a suspended state without coming into contact with the object to be coated. be able to.

Since the hook 20 is integrally formed with the gun body 11 (body 12), it is relatively hard. Therefore, there is a concern that the fixing member 38 may be damaged by the hook 20. As a countermeasure, for example, as shown in FIG. 2, a pad 22 made of a material softer than the fixing member 38 can be attached to the upper end portion of the hook hole 21.

The hook 20 has a front cylindrical portion 23F projecting diagonally upward and backward from a substantially central portion of the upper surface of the body 12 in the front-rear direction, and a rear tubular portion 23R projecting diagonally upward and forward from the rear end portion on the upper surface of the body 12. And have. The upper end of the front cylindrical portion 23F and the upper end of the rear tubular portion 23R communicate with each other. The internal space of the front cylindrical portion 23F is an accommodating portion 24 communicating with the internal space of the body 12. The upper end of the accommodating portion 24 is opened diagonally upward and backward to the outside of the hook 20. The axis of the front cylindrical portion 23F (accommodation portion 24) is substantially parallel to the axis of the connection portion 15.

A connecting member 25 having a ring-shaped tightening portion 26 is fixed to the front cylindrical portion 23F. The ring-shaped tightening portion 26 is fitted onto the connection end portion 36E attached to the connection portion 15 of the hose 36, and the hose 36 is tightened so as to reduce the diameter. The connection end portion 36E of the hose 36 is fixed to the hook 20 in a positioned state by the connecting member 25. As a result, the connection end 36E of the hose 36 is held in a state of being substantially parallel to the front cylindrical portion 23F, and is restricted from being displaced in the front-rear direction or the left-right direction. The load on the mounting site is reduced. Since the connection end portion 36E of the hose 36 is restricted from rotating around the axis by the connecting member 25, there is no possibility that the hose 36 will be twisted.

The heater 27 is an electric device for maintaining the molten state of the hot melt 35 supplied in the flow path 17 or for adjusting the viscosity of the hot melt 35, and is housed inside the front member 13F. An internal cable 28 including a power supply circuit for supplying power to the heater 27 is derived from the heater 27, and the internal cable 28 is arranged in the body 12 (rear side member 13R). In addition to the power supply circuit, the internal cable 28 includes a detection signal transmission circuit of a temperature sensor (not shown) that detects the temperature of the hot melt 35, a ground circuit, and a cutoff circuit that cuts off the power supply to the heater 27 when overheated. .. A receptacle 30 which is a means for connecting to an external cable 37 (cable according to claim), which will be described later, is attached to the lead-out end of the internal cable 28.

The internal cable 28 is arranged in a bent state in the internal space of the body 12. The receptacle 30 attached to the extending end of the internal cable 28 is attached to the accommodating portion 24 of the hook 20. An external cable 37 (cable according to claim) routed to the outside of the gun main body 11 is connected to the receptacle 30. The external cable 37 is connected to the internal cable 28 via the receptacle 30, and like the internal cable 28, includes a power supply circuit to the heater 27, a detection signal transmission circuit of the temperature sensor, a ground circuit, and a cutoff circuit. ..

The inside of the grip 14 is a wiring space in which the internal cable 28 can be routed. The grip 14 is formed with a mounting portion 31 that opens to the lower end surface of the grip 14. The receptacle 30 can be attached to the attachment portion 31. Further, when the receptacle 30 is provided on the mounting portion 31 of the grip 14, the external cable 37 is led out downward from the lower end portion of the grip 14, so that the front member 13F of the body 12 is in a downward-mounted form and the connecting portion 15 is provided. Keep it facing down. In this way, the hose 36 can be routed so as to be led downward from the front end portion of the body 12.

The coating gun 10 of this embodiment has a gun body 11 provided with a nozzle 16 for discharging the hot melt 35 and a form protruding from the outer surface (upper surface) of the gun body 11 and can be hooked on the fixing member 38. It includes a hook 20 and a receptacle 30 connected to a heater 27 in the gun body 11 via an internal cable 28 and to which an external cable 37 for energizing the heater 27 is connected.

In order to improve the operability when manually operating the gun body 11, it is preferable to reduce the size and weight of the gun body 11. However, if the hook 20 and the receptacle 30 are arranged side by side on the upper surface of the gun body 11 after the gun body 11 is miniaturized, the installation space of the hook 20 is restricted, and the hook 20 must be made smaller. If the hook 20 is made smaller, the workability when hooking the hook 20 on the fixing member 38 is deteriorated.

In the coating gun 10 of the present embodiment, a receptacle 30 is provided on the hook 20 as a means for preventing the workability when hooking the hook 20 from being impaired while reducing the size of the gun body 11. Specifically, an accommodating portion 24 is formed inside the hook 20, and the receptacle 30 is accommodated in the accommodating portion 24. According to this configuration, the hook 20 can be increased in size even if the allowable installation area of the hook 20 and the receptacle 30 on the outer surface of the gun main body 11 is limited.

Further, in the gun body 11, in addition to the connecting portion 15 to which the hose 36 for supplying the hot melt 35 to the gun body 11 is connected, the connecting member 25 connecting the hose 36 connected to the connecting portion 15 and the hook 20 is connected. Is provided. According to this configuration, it is possible to prevent twisting around the axis of the hose 36 and deformation such as bending the axis of the hose 36. Further, the accommodating portion 24 accommodating the receptacle 30 is provided so as to be substantially in parallel with the connecting portion 15 to which the hose 36 is connected. According to this configuration, the cable can be routed along the outer circumference of the hose 36, so that it is possible to prevent other members from interfering with the cable.

Further, since the contactable region (upper end portion of the hook hole 21) of the hook 20 with the fixing member 38 is made of a material softer than the fixing member 38, when the hook 20 hits the fixing member 38, , It is possible to prevent the fixing member 38 from being damaged or deformed. Further, a mounting portion 31 to which the receptacle 30 can be mounted is opened on the bottom surface of the grip 14 of the gun body 11. According to this configuration, the receptacle 30 can be selectively attached to one of the hook 20 (accommodation portion 24) and the grip 14 (mounting portion 31).

<Other Examples>
The present invention is not limited to the examples described in the above description and drawings, and for example, the following examples are also included in the technical scope of the present invention.
(1) In the above embodiment, the hook is integrally formed with the gun body, but the hook may be a separate part from the gun body.
(2) In the above embodiment, the hook is made of only the same material as the gun body, but the hook is a base portion made of the same material as the gun body and a separate body attached to at least a part of the surface of the base portion. It may be in the form of including a member.
(3) In the above embodiment, the side view shape of the hook is substantially triangular, but the side view shape of the hook may be a trapezoid, a square, an arc shape, or the like.
(4) In the above embodiment, the hook is in a form in which the hole edge portion of the hook hole is connected over the entire circumference, but the hook is a substantially C-shape with a part of the hook hole opened to the outer peripheral side, substantially J. It may be a glyph, a V-shape, or the like.
(5) In the above embodiment, the hook is arranged on the upper surface of the gun body, but the hook may be arranged on the side surface or the back surface (rear surface) of the gun body.
(6) In the above embodiment, the axis of the connecting portion is oblique to the upper surface of the gun body, but the axis of the connecting portion may be perpendicular to the upper surface of the gun body, and the axis of the connecting portion may be perpendicular to the upper surface of the gun body. It may be parallel to the top surface.
(7) In the above embodiment, the axis of the accommodating portion is oblique to the upper surface of the gun body, but the axis of the accommodating portion may be perpendicular to the upper surface of the gun body, and the axis of the accommodating portion may be perpendicular to the upper surface of the gun body. It may be parallel to the top surface.
(8) In the above embodiment, the axis of the connecting portion and the axis of the accommodating portion are parallel, but the axis of the connecting portion may be oblique to the axis of the accommodating portion.
(9) In the above embodiment, the coating gun is for applying hot melt, but the present invention is not limited to the coating gun for hot melt, but is not limited to the coating gun for hot melt, but also for the coating gun for paint and the sealer for discharging the sealing material. Can also be applied.
(10) In the above embodiment, the coating gun is a hand gun for coating by a manual trigger operation, but the present invention is an automatic gun (robot) for automatically coating based on a control program, sensor information, or the like. Can also be applied.

10 ... Coating gun 11 ... Gun body 14 ... Grip 15 ... Connection part 16 ... Nozzle 20 ... Hook 24 ... Accommodation part 25 ... Connecting member 27 ... Heater (equipment)
30 ... Receptacle 31 ... Mounting part 35 ... Hot melt (coating agent)
36 ... Hose 37 ... External cable (cable)
38 ... Fixing member

Claims (5)

A gun body equipped with a nozzle that discharges the coating agent,
A hook that protrudes from the outer surface of the gun body and can be hooked on a fixing member.
It is equipped with a receptacle that is derived from the device inside the gun body and to which a cable that conducts electricity is connected to the device.
A coating gun characterized in that the receptacle is provided on the hook. A connection portion provided on the gun body and to which a hose for supplying the coating agent to the gun body is connected.
The coating gun according to claim 1, further comprising a connecting member for connecting the hose connected to the connecting portion and the hook. A connection portion provided on the gun body and to which a hose for supplying the coating agent to the gun body is connected.
The coating gun according to claim 1 or 2, wherein the hook is provided on the hook so as to be substantially parallel to the connection portion, and is provided with a housing portion capable of accommodating the receptacle. The coating gun according to any one of claims 1 to 3, wherein the contactable region of the hook with the fixing member is made of a material softer than the fixing member. The coating gun according to any one of claims 1 to 4, wherein an opening is provided on the bottom surface of the grip of the gun body and a mounting portion to which the receptacle can be mounted is provided.

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