Laser focusing electric paint spraying gun

Abstract

The utility model relates to the technical field of surface coating tool equipment, and discloses a laser focusing electric paint spraying gun which comprises a gun body and a paint bottle, a nozzle is arranged at the front end of the gun body, a bottle cap clamp is arranged under the nozzle, an electric compression pump, a control panel and a battery pack are arranged in the gun body, a nozzle of the electric compression pump is connected with the nozzle, and the nozzle is connected with the control panel. The electric compression pump is electrically connected with the battery pack through the control panel, a control switch is arranged on the control panel, the gun body is further provided with a trigger, and an air injection switch is further arranged at the rear end of the trigger and electrically connected with the electric compression pump through the control panel. The paint bottle comprises a bottle body and a bottle cap detachably connected with the bottle body, a connecting pipe is arranged on the bottle cap, a needle head is installed at the top of the connecting pipe, a feeding pipe is connected to the bottom of the connecting pipe, and the feeding pipe extends into the bottle body; a clamping groove is formed in the side wall of the bottle cap, a bottle cap clamp of the gun body is detachably connected with the bottle cap through the clamping groove, and the needle head limiting plate is connected with the needle head in an abutting mode.

Description

Technical Field

[0001] This utility model relates to the field of surface coating tool and equipment technology, and in particular to a laser-focused electric spray gun. Background Technology

[0002] Existing spray guns mainly consist of a nozzle cap, a nozzle, a needle valve, and a gun body. During use, when the nozzle is a certain distance from the surface of the object to be treated, the trigger connected to the needle valve is pulled, and the spray liquid is sprayed onto the surface of the object. However, as portable spray guns, they require the use of pre-made paint cans with compressed air, which means that existing portable spray guns cannot use self-mixed paints.

[0003] To address the aforementioned issues, Chinese utility model patent CN219560043U discloses a portable paint spraying air pump. The main body of this air pump includes an outer assembly shell, a handheld base located below the outer assembly shell, and a paint spraying mechanism housed inside the outer assembly shell. A pneumatic paint spraying mechanism is located at the rear end of the paint spraying mechanism. The paint spraying mechanism includes an extraction unit and a protective unit. The extraction unit is located inside the outer assembly shell, and the protective unit is located at the front end of the extraction unit. This paint spraying air pump can use self-mixed paints, but because both its extraction unit and pneumatic paint spraying mechanism consume electrical energy, its energy consumption is high, and the overall manufacturing cost of the equipment is high, which is not conducive to the large-scale promotion and use of the product. Summary of the Invention

[0004] The purpose of this utility model is to develop a portable paint spray gun with lower manufacturing, use, and maintenance costs. The specific technical solution is as follows:

[0005] This utility model provides a laser-focused electric spray gun, including a gun body and a paint bottle. A nozzle is provided at the front end of the gun body, and a bottle cap clamp is located directly below the nozzle. A needle limiting plate is provided between the nozzle and the bottle cap clamp. An electric air compressor, a control board, and a battery pack are housed within the gun body. The nozzle of the electric air compressor is connected to the nozzle, and the electric air compressor is electrically connected to the battery pack via the control board. A control switch is provided on the control board. The gun body also has a trigger, one end of which is hinged... The connecting shaft is hinged to the gun body. The rear end of the trigger is also equipped with a jet switch, which is electrically connected to an electric air compressor via a control board. The paint bottle includes a bottle body and a cap detachably connected to the bottle body. A connecting tube is provided on the cap, a needle is installed at the top of the connecting tube, and a feeding tube is connected to the bottom of the connecting tube, extending into the bottle body. A clamping groove is provided on the side wall of the cap, and the cap clamp of the gun body is detachably connected to the cap via the clamping groove. The needle limiting plate is in contact with the needle.

[0006] Optionally, the gun body includes a left housing, a right housing, and a front cover that are connected to each other. The left housing and the right housing are closed to form a body cavity, a handle cavity, and a battery cavity. The electric air pump and control board are disposed in the body cavity. The air jet switch is disposed in the handle cavity and is pressed into contact with the trigger through a return spring. The battery pack is disposed in the battery cavity.

[0007] Optionally, the battery pack is a lithium-ion battery, the control board is provided with a charging connector, the outer side wall of the left housing is provided with a switch hole and a charging hole, a switch button is sleeved in the switch hole, and the switch button is in contact with the control switch.

[0008] Optionally, a display window is provided on one side of the switch hole, and a power display screen is provided on the control board. The power display screen is sleeved inside the display window, and a transparent plastic panel is pasted and fixed to the outside of the display window of the left housing.

[0009] Optionally, a nozzle is provided in the middle of the front cover, and a light-emitting LED is provided on each side of the nozzle in the horizontal direction. The light-emitting LED is electrically connected to the battery pack through a control switch, and the light from the light-emitting LED is focused directly in front of the nozzle.

[0010] Optionally, an arc-shaped concave hole is provided on each of the two sides of the nozzle in the horizontal direction. The light-emitting lamp bead is sleeved with the arc-shaped concave hole through a spherical fixing bead. The spherical fixing bead is provided with a lamp bead insertion through hole, and the light-emitting lamp bead is sleeved in the lamp bead insertion through hole.

[0011] Optionally, the light-emitting lamp bead is an infrared laser lamp bead.

[0012] Optionally, the bottle cap clip is a C-shaped clip with an opening, and the bottle cap clip is made of elastic plastic.

[0013] Optionally, a vent hole is provided on one side of the connecting tube of the bottle cap.

[0014] The beneficial effects of this utility model are:

[0015] In the use of the paint spray gun according to this embodiment, the self-mixing paint can be first loaded into the bottle, and the bottle cap connected to the supply tube can be fixed to the bottle mouth. The bottle body and the gun body are connected by the bottle cap clamping groove of the bottle cap and the bottle cap clamp of the gun body, ensuring that the needle limit is in the slot of the needle limit plate, and the tip of the needle is directly below the air jet passage of the nozzle. The control switch is turned on, and the electric air compressor is in standby mode. Pressing the trigger activates the air jet switch, and the electric air compressor operates, spraying high-speed compressed air through the nozzle. When the high-speed compressed air passes over the tip of the needle, the Venturi effect carries out the air inside the needle, creating a negative pressure in the supply tube, ultimately drawing out the paint liquid from the bottle. The drawn-out paint is dispersed by the high-speed compressed air to form a spray, which is then blown to the surface to be sprayed to complete the spraying process. Therefore, the paint spray gun of this utility model embodiment can not only spray self-mixed paint, but also has lower usage, manufacturing and subsequent maintenance costs than the prior art because the only high-energy-consuming unit is the electric air compressor. This is conducive to the large-scale promotion and use of the product and can effectively solve the problems existing in the prior art.

[0016] Furthermore, in this embodiment of the paint gun, the light from the LED beads is focused directly in front of the nozzle. That is, the light rays from the two LED beads intersect, with the intersection point located directly in front of the nozzle. The distance from the intersection point to the nozzle is equal to the optimal spraying distance, and a spherical fixing bead is then secured with adhesive. During the spraying process, if the nozzle is too far from or too close to the spray surface, the LED beads will project a large or two large light spots onto the spray surface. Only when the distance is exactly optimal will the light spot be a small, strong spot. This embodiment of the paint gun allows for direct observation of changes in the light spots on the spray surface to determine whether the nozzle is at the optimal distance, facilitating the use of the paint gun. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a laser-focused electric paint spray gun according to the present invention;

[0018] Figure 2 This is an exploded view of the parts of a laser-focused electric paint spray gun according to this utility model.

[0019] Figure 3 This is a cross-sectional view of a laser-focused electric paint spray gun according to the present invention.

[0020] Figure 4 This is a reference diagram showing the usage state of a laser-focused electric paint spray gun according to this utility model.

[0021] Explanation of icon numbers:

[0022] 01 Gun Body, 01-1 Left Shell, 01-2 Right Shell, 01-3 Front Cover, 01-4 Body Cavity, 01-5 Handle Cavity, 01-6 Battery Cavity, 011 Nozzle, 012 Bottle Cap Clip, 013 Needle Limiting Plate, 015 Slot, 016 Switch Hole, 017 Charging Hole, 018 Display Window, 019 Transparent Plastic Panel, 020 Arc-shaped Recessed Hole, 03 Electric Air Pump, 031 Nozzle, 05 Control Panel 051 Control switch, 052 Charging connector, 053 Switch button, 055 Power display screen, 06 Battery pack, 07 Trigger, 071 Hinge shaft, 072 Jet switch, 073 Return spring, 08 Paint bottle, 081 Bottle body, 082 Bottle cap, 083 Connecting tube, 084 Needle, 085 Feed tube, 086 Clamping slot, 09 Illuminating lamp bead, 091 Spherical fixing bead, 092 Lamp bead insertion hole.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The following specific examples, in conjunction with the accompanying drawings, illustrate the embodiments of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific examples, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies both A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] This utility model embodiment provides a laser-focused electric spray gun (hereinafter referred to as a spray gun), which has the following structural features:

[0028] like Figures 1 to 4As shown, this paint spray gun includes a gun body 01 and a paint bottle 08. A nozzle 011 is provided at the front end of the gun body 01, and a bottle cap clamp 012 is provided directly below the nozzle 011. A needle limiting plate 013 is provided between the nozzle 011 and the bottle cap clamp 012. An electric air compressor 03, a control board 05 and a battery pack 06 are provided inside the gun body 01. The nozzle 031 of the electric air compressor 03 is connected to the nozzle 011. The electric air compressor 03 is electrically connected to the battery pack 06 through the control board 05. A control switch 051 is provided on the control board 05. Specifically, the gun body 01 includes a left housing 01-1, a right housing 01-2, and a front cover 01-3 that are connected to each other. The left housing 01-1 and the right housing 01-2 together form a body cavity 01-4, a handle cavity 01-5, and a battery cavity 01-6. The electric air compressor 03 and the control board 05 are located in the body cavity 01-4, and the battery pack 06 is located in the battery cavity 01-6. The gun body 01 is also equipped with a trigger 07. One end of the trigger 07 is hinged to the gun body 01 via a hinge shaft 071, and the rear end of the trigger 07 is equipped with a jet switch 072. Specifically, the jet switch 072 is located in the handle cavity 015 and is pressed into contact with the trigger 07 via a return spring 073. The jet switch 072 is electrically connected to the electric air compressor 03 via the control board 05 and controls the electric air compressor to spray compressed air. The paint bottle 08 includes a bottle body 081 and a bottle cap 082 detachably connected to the bottle body 081 via a threaded or snap-fit ​​interface. A connecting tube 083 is provided on the bottle cap 082, with a needle 084 mounted on the top of the connecting tube 083 and a feeding tube 085 connected to the bottom of the connecting tube 083. The feeding tube 085 extends into the bottle body 081. The tip of the needle 084 is located directly below and in contact with the jet passage of the nozzle. A vent (not shown) is provided on one side of the connecting tube 083 of the bottle cap 082 to balance the air pressure inside and outside the bottle. A clamping groove 086 is provided on the side wall of the bottle cap 082. The bottle cap clamp 012 of the gun body 01 is detachably connected to the bottle cap 082 via the clamping groove 086. The front end of the needle limiting plate 013 is in contact with the base of the needle 084 via a snap-fit ​​groove 015.

[0029] During use, first fill the self-mixing paint into the bottle, then fix the bottle cap connected to the supply tube to the bottle opening. The bottle and gun are connected by the cap's clamping groove and the cap clamp on the gun body, ensuring the needle is positioned within the groove of the needle limiting plate, with the tip of the needle directly below the nozzle's airflow passage. Turn on the control switch; the electric air pump is in standby mode. Press the trigger to activate the airflow switch, and the electric air pump operates, spraying high-speed compressed air through the nozzle. As the high-speed compressed airflow passes the tip of the needle, the Venturi effect draws out air from the needle, creating negative pressure in the supply tube, ultimately extracting the paint from the bottle. The extracted paint is dispersed by the high-speed compressed airflow, forming a spray that is then blown onto the surface to be sprayed, completing the spraying process.

[0030] The paint spray gun of this utility model can not only spray self-mixed paint, but also has lower usage, manufacturing and subsequent maintenance costs than the prior art because the only high-energy-consuming unit is the electric air compressor. This is conducive to the large-scale promotion and use of the product and can effectively solve the problems existing in the prior art.

[0031] Additionally, the bottle cap clip 012 is a C-shaped clip with an opening, and the bottle cap clip 012 is made of elastic plastic. The deformation of the open end of the C-shaped clip makes it easier to clamp the bottle cap, facilitating the installation of the bottle body and the gun body.

[0032] In one embodiment, the battery pack 06 is a lithium-ion battery. The control board 05 is equipped with a charging connector 052. The outer wall of the left housing 01-1 has a switch hole 016 and a charging hole 017. A switch button 053 is fitted inside the switch hole 016, and the switch button 053 is in contact with a control switch 051. Simultaneously, a display window 018 is provided on one side of the switch hole 016. The control board 05 is equipped with a power display screen 055, which is fitted inside the display window 018. A transparent plastic panel 019 is adhered and fixed to the outside of the display window 018 on the left housing 01-1. The lithium-ion battery can be charged and discharged, and the remaining power of the battery pack can be observed in real time through the power display screen.

[0033] In one embodiment, a nozzle 011 is provided in the middle of the front cover 01-3, and a light-emitting LED 09 is provided on each of the two horizontal sides of the nozzle 011. Specifically, an arc-shaped concave hole 020 is provided on each of the two horizontal sides of the nozzle 011. The light-emitting LED 09 is sleeved with the arc-shaped concave hole 020 through a spherical fixing bead 091. The spherical fixing bead 091 is provided with an LED insertion through hole 092, and the light-emitting LED 09 is sleeved in the LED insertion through hole 092. The outer wall of the spherical fixing bead fits against the inner wall of the arc-shaped concave hole, which facilitates the adjustment of the light projection direction of the LED. The light-emitting LED 09 is electrically connected to the battery pack 06 through a control switch 051. The light of the light-emitting LED 09 is focused in front of the nozzle, that is, the light rays of the two light-emitting LEDs intersect each other, and the intersection point is located in front of the nozzle. According to the optimal painting distance, the distance from the intersection point to the nozzle is equal to the optimal painting distance. The spherical fixing bead is then fixed with adhesive. During the painting process, if the nozzle is too far from or too close to the paint surface, the LEDs will project a large or two bright spots onto the paint surface. Only when the distance is exactly optimal will the bright spot be a small, strong one. This embodiment of the paint gun allows users to visually determine whether the nozzle is at the optimal distance from the paint surface by observing changes in the bright spots, thus facilitating the use of the paint gun.

[0034] Preferably, the light-emitting lamp bead 09 is an infrared laser lamp bead (also known as a laser infrared lamp). Infrared laser lamp beads have a small beam divergence angle, concentrated energy, and sufficient light intensity even after propagating over a long distance. It is understood that the light-emitting lamp bead 09 can also be a lamp bead that projects blue, green, or red light, and these solutions are also within the protection scope of this utility model patent.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A laser-focused electric spray gun, comprising a gun body and a paint bottle, characterized in that, The gun body has a nozzle at its front end and a bottle cap clamp directly below the nozzle. The gun body houses an electric air compressor, a control board, and a battery pack. The nozzle of the electric air compressor is connected to the nozzle, and the electric air compressor is electrically connected to the battery pack via the control board. The control board has a control switch. The gun body also has a trigger, one end of which is hinged to the gun body via a hinge shaft. A jet switch is located at the rear end of the trigger and is electrically connected to the electric air compressor via the control board. The paint bottle includes a bottle body and a bottle cap detachably connected to the bottle body. The bottle cap has a connecting tube with a needle mounted at its top and a feed tube connected to its bottom, extending into the bottle body. The side wall of the bottle cap has a clamping groove, and the bottle cap clamp of the gun body is detachably connected to the bottle cap via the clamping groove.

2. The laser-focused electric spray gun according to claim 1, characterized in that, The gun body includes a left shell, a right shell, and a front cover that are connected to each other. The left shell and the right shell are connected to form a body cavity, a handle cavity, and a battery cavity. The electric air pump and control board are located in the body cavity. The jet switch is located in the handle cavity and is pressed into contact with the trigger through a return spring. The battery pack is located in the battery cavity.

3. The laser-focused electric spray gun according to claim 2, characterized in that, The battery pack is a lithium-ion battery. The control board is provided with a charging connector. The outer side wall of the left housing is provided with a switch hole and a charging hole. A switch button is sleeved in the switch hole and the switch button is in contact with the control switch.

4. The laser-focused electric spray gun according to claim 3, characterized in that, A display window is provided on one side of the switch hole, and a power display screen is provided on the control board. The power display screen is sleeved inside the display window, and a transparent plastic panel is pasted and fixed to the outside of the display window of the left housing.

5. The laser-focused electric spray gun according to claim 2, characterized in that, A nozzle is provided in the middle of the front cover, and a light-emitting LED is provided on each side of the nozzle in the horizontal direction. The light-emitting LED is electrically connected to the battery pack through a control switch, and the light from the light-emitting LED is focused directly in front of the nozzle.

6. The laser-focused electric spray gun according to claim 5, characterized in that, The nozzle has an arc-shaped concave hole on each side in the horizontal direction. The light-emitting lamp bead is sleeved with the arc-shaped concave hole through a spherical fixing bead. The spherical fixing bead is provided with a lamp bead insertion through hole, and the light-emitting lamp bead is sleeved in the lamp bead insertion through hole.

7. The laser-focused electric paint spray gun according to claim 5, characterized in that, The light-emitting LED is an infrared laser LED.

8. The laser-focused electric spray gun according to claim 1, characterized in that, The bottle cap clip is a C-shaped clip with an opening, and the bottle cap clip is made of elastic plastic.

9. The laser-focused electric spray gun according to claim 1, characterized in that, A vent is provided on one side of the connecting tube of the bottle cap.

10. The laser-focused electric spray gun according to claim 1, characterized in that, A needle limiting plate is provided between the nozzle and the bottle cap clamp, and the needle limiting plate is in contact with the needle.

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