A hot air gun head with freely adjustable size
By designing a hot air gun head with freely adjustable size, the problem of needing to replace nozzles in existing technologies has been solved. This enables stable installation and efficient and flexible adjustment of the hot air gun head, adapting to different heating needs and improving work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING INST OF MECHATRONIC TECH
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-26
AI Technical Summary
The existing hot air gun heads require changing to different sized nozzles to suit different heating areas or object shapes, which makes the operation cumbersome and affects work efficiency.
A hot air gun head with adjustable size was designed. It is fixed to the side wall of the hot air gun nozzle by a connecting device and prevented from falling by the elasticity of a spring. The size of the air outlet can be flexibly adjusted by the cooperation of the rotating block and the sliding groove of the adjusting device. It is equipped with a replaceable filter to filter impurities.
It improves the installation stability and usage efficiency of the hot air gun head, enhances its adaptability to different heating areas, ensures uniform hot air output, and simplifies the operation steps.
Smart Images

Figure CN224415369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot air gun head technology, and more specifically, it relates to a hot air gun head whose size can be freely adjusted. Background Technology
[0002] A hot air gun is a tool widely used in industrial production, maintenance, and electronics manufacturing. It is mainly used for heating, welding, drying, shrinking, and thermoforming. The hot air gun head with adjustable nozzle size can adjust the hot air coverage area and airflow intensity according to specific needs, thus adapting to different application scenarios. With the increasing demand for flexibility and efficiency, hot air gun heads with adjustable nozzle size have been widely used in electronics manufacturing, automotive repair, and plastics processing.
[0003] While existing technologies allow for the replacement of hot air gun heads of different sizes to meet the heating requirements of different workpieces, the fixed air outlet may not be flexible enough when precise control of the heating area is required or when processing objects of different shapes. This results in the need to replace different nozzles, which not only increases the number of operation steps but may also affect work efficiency. Therefore, those skilled in the art have provided a hot air gun head with an adjustable size to solve the problems mentioned in the background art.
[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a hot air gun head whose size can be freely adjusted. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hot air gun head that can be freely adjusted in size, which can fix the mounting shell to the side wall of the gun muzzle by setting a connecting device, effectively preventing the device from falling off and improving the stability during installation, and can adjust the size of the air outlet by setting an adjustment device, thereby improving the overall adaptability of the device.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a hot air gun head with adjustable size, comprising:
[0007] A connecting device for connecting to a hot air gun nozzle includes a mounting shell. The inner side wall of the mounting shell has a plurality of first sliding grooves arranged in a circular array on the rear side. Springs are respectively provided on the inner side wall of the first sliding grooves. A pressure block is slidably connected to the inner side wall of the first sliding grooves. A groove is provided on one side of the front end of the mounting shell.
[0008] The adjustment device is used to adjust the size of the air outlet, including a rotating block that is rotatably set at the front end of the mounting shell. The front end of the rotating block is rotatably connected to an air outlet pipe. The rear end of the air outlet pipe has several second sliding grooves arranged in a circular array. The front end of the rotating block is rotatably connected to several blades. The sidewalls of the blades are provided with through holes.
[0009] Preferably, an installation block is slidably connected to the inner wall of the groove, a handle is fixedly connected to one side of the installation block, and a filter screen is fixedly connected to the other side of the installation block.
[0010] Preferably, the rotating block has a plurality of grooves arranged in a circular array at its front end, and a first slider is slidably connected to the inner sidewall of each of the grooves. A second slider is fixedly connected to the front end of each of the blades. A mounting bracket is fixedly connected to the sidewall of the air outlet pipe, and the mounting bracket is fixedly connected to the front end of the mounting shell.
[0011] Preferably, one end of each of the springs is fixedly connected to the inner wall of the first slide groove, and the other end of each of the springs is fixedly connected to the other end of each of the pressure blocks.
[0012] Preferably, a plurality of the second sliders are slidably connected to the inner sidewalls of a plurality of second slide grooves.
[0013] Preferably, a plurality of the first sliders are rotatably connected to the inner sidewalls of a plurality of through holes.
[0014] Preferably, the inner sidewall of the rotating block is slidably connected to the rear sidewall of the air outlet duct.
[0015] Preferably, the filter screen is adapted to the front side of the inner wall of the mounting housing.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] 1. In this utility model, by setting a connecting device, a first sliding groove is opened on the inner side wall of the mounting shell, and a pressure block is slidably set in the first sliding groove. The mounting shell is sleeved on the position of the hot air gun nozzle. The spring force can be used to fix the mounting shell to the side wall of the gun nozzle, effectively preventing the device from falling off and improving the stability during installation.
[0018] 2. In this utility model, by setting an adjustment device, the blades can be opened and closed by rotating the rotating block during operation, utilizing the cooperation between the second slide groove and the second slider, as well as the cooperation between the first slider and the slide groove. This allows control over the size of the nozzle's air outlet, effectively improving the equipment's efficiency. It also allows adjustment of the air outlet size to accommodate the different heating areas required by different components, thus improving the overall adaptability of the device.
[0019] 3. In this utility model, a mounting block is slidably provided on the side wall of the mounting shell, and a filter screen is installed on the inner side wall of the mounting block. The filter screen can be quickly replaced by pulling the handle. The filter screen can filter out impurities and particles in the air, so that the hot air is sprayed out more evenly through the nozzle. Attached Figure Description
[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the exploded structure of this utility model;
[0023] Figure 3 This is an exploded structural diagram of the adjusting device in this utility model;
[0024] Figure 4 This is a front view schematic diagram of the structure in this utility model:
[0025] Figure 5 for Figure 4 A magnified structural diagram of point A in the middle.
[0026] 1. Connecting device; 101. Mounting shell; 102. Groove; 103. Pressure block; 104. First slide groove; 105. Spring; 2. Adjusting device; 201. Air outlet pipe; 202. Second slide groove; 203. Rotating block; 204. First slider; 205. Slide groove; 206. Blade; 207. Second slider; 208. Through hole; 209. Mounting bracket; 3. Filter screen; 4. Handle; 5. Mounting block. Detailed Implementation
[0027] like Figure 1-5 As shown, this utility model provides a hot air gun head with an adjustable size, comprising:
[0028] The connecting device 1 is used to connect to the hot air gun nozzle. It includes a mounting shell 101. The inner side wall of the mounting shell 101 has a plurality of first sliding grooves 104 arranged in a circular array on the rear side. The inner side wall of the first sliding grooves 104 is provided with springs 105 respectively. The inner side wall of the first sliding grooves 104 is slidably connected with a pressure block 103. A groove 102 is opened on one side of the front end of the mounting shell 101.
[0029] It should be noted that by setting the connecting device 1, a first sliding groove 104 is provided on the inner side wall of the mounting shell 101, and a pressure block 103 is slidably arranged in the first sliding groove 104. The mounting shell 101 is fitted onto the position of the hot air gun nozzle. The elastic force of the spring 105 can fix the mounting shell 101 to the side wall of the nozzle, effectively preventing the device from falling off and improving the stability during installation.
[0030] Adjustment device 2 adjusts the size of the air outlet by rotating a rotating block 203 located at the front end of the mounting housing 101. The front end of the rotating block 203 is rotatably connected to an air outlet pipe 201. The rear end of the air outlet pipe 201 has a number of second sliding grooves 202 arranged in a circular array. The front end of the rotating block 203 is rotatably connected to a number of blades 206. The side walls of the blades 206 are provided with through holes 208.
[0031] It should be noted that by setting the adjustment device 2, during operation, by rotating the rotating block 203, the blade 206 can be opened and closed by utilizing the cooperation between the second slide groove 202 and the second slider 207, as well as the cooperation between the first slider 204 and the slide groove 205. This allows control over the size of the air outlet of the gun muzzle, effectively improving the efficiency of the equipment. It also allows adjustment of the air outlet size to accommodate the different heating areas required by different components, thus improving the overall adaptability of the device.
[0032] An installation block 5 is slidably connected to the inner wall of the groove 102. A handle 4 is fixedly connected to one side of the installation block 5, and a filter screen 3 is fixedly connected to the other side of the installation block 5. The filter screen 3 is adapted to the front side of the inner wall of the mounting shell 101.
[0033] It should be noted that by sliding the mounting block 5 on the side wall of the mounting housing 101, and installing the filter screen 3 on the inner side wall of the mounting block 5, the filter screen 3 can be quickly replaced by pulling the handle 4. The filter screen 3 can filter out impurities and particles in the air, so that the hot air is sprayed out more evenly through the nozzle.
[0034] The front end of the rotating block 203 has a number of sliding grooves 205 arranged in a circular array. The inner sidewalls of the sliding grooves 205 are respectively slidably connected to the first sliders 204. The front ends of the blades 206 are respectively fixedly connected to the second sliders 207. The sidewall of the air outlet duct 201 is fixedly connected to the mounting bracket 209, and the mounting bracket 209 is fixedly connected to the front end of the mounting shell 101.
[0035] One end of several springs 105 is fixedly connected to the inner wall of the first slide groove 104, and the other end of several springs 105 is fixedly connected to the other end of several pressure blocks 103.
[0036] Several second sliders 207 are slidably connected to the inner sidewalls of several second slide grooves 202, several first sliders 204 are rotatably connected to the inner sidewalls of several through holes 208, and the front side of the inner sidewall of the rotating block 203 is slidably connected to the rear sidewall of the air outlet pipe 201.
[0037] Working principle: A first sliding groove 104 is provided on the inner side wall of the mounting shell 101, and a pressure block 103 is slidably arranged in the first sliding groove 104. The mounting shell 101 is fitted onto the position of the hot air gun nozzle. The spring force of the spring 105 can fix the mounting shell 101 to the side wall of the nozzle. During operation, by rotating the rotating block 203, the blade 206 can be opened and closed by the cooperation of the second sliding groove 202 and the second slider 207, as well as the cooperation of the first slider 204 and the sliding groove 205, so that the size of the air outlet of the nozzle can be controlled.
[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A hot air gun head that can be freely adjusted in size, characterized by: include: A connecting device (1) is used to connect to the hot air gun nozzle, including a mounting shell (101). The inner side wall of the mounting shell (101) has a plurality of first sliding grooves (104) arranged in a circular array on the rear side. The inner side wall of the first sliding grooves (104) is respectively provided with springs (105). The inner side wall of the first sliding grooves (104) is slidably connected with pressure blocks (103). A groove (102) is opened on one side of the front end of the mounting shell (101). The adjusting device (2) adjusts the size of the air outlet by rotating a rotating block (203) located at the front end of the mounting shell (101). The front end of the rotating block (203) is rotatably connected to an air outlet pipe (201). The rear end of the air outlet pipe (201) has several second sliding grooves (202) arranged in a circular array. The front end of the rotating block (203) is rotatably connected to several blades (206). The side walls of several blades (206) are provided with through holes (208).
2. The hot air gun head with adjustable size according to claim 1, characterized in that: An installation block (5) is slidably connected to the inner wall of the groove (102). A handle (4) is fixedly connected to one side of the installation block (5), and a filter screen (3) is fixedly connected to the other side of the installation block (5).
3. The hot air gun head with adjustable size according to claim 1, characterized in that: The front end of the rotating block (203) has a plurality of sliding grooves (205) arranged in a circular array. The inner sidewalls of the plurality of sliding grooves (205) are respectively slidably connected to the first slider (204). The front ends of the plurality of blades (206) are respectively fixedly connected to the second slider (207). The sidewall of the air outlet pipe (201) is fixedly connected to the mounting bracket (209). The mounting bracket (209) is fixedly connected to the front end of the mounting shell (101).
4. The hot air gun head with adjustable size according to claim 1, characterized in that: One end of several springs (105) is fixedly connected to the inner wall of the first slide groove (104), and the other end of several springs (105) is fixedly connected to the other end of several pressure blocks (103).
5. A hot air gun head with adjustable size according to claim 3, characterized in that: Several of the second sliders (207) are slidably connected to the inner sidewalls of several second grooves (202).
6. A hot air gun head with adjustable size according to claim 3, characterized in that: A plurality of the first sliders (204) are rotatably connected to the inner sidewalls of a plurality of through holes (208).
7. A hot air gun head with adjustable size according to claim 3, characterized in that: The inner side wall of the rotating block (203) is slidably connected to the rear side wall of the air outlet pipe (201).
8. A hot air gun head with adjustable size according to claim 2, characterized in that: The filter (3) is adapted to the front side of the inner wall of the mounting shell (101).