Fixed-height movable heating auxiliary device, desoldering device and desoldering workbench

Abstract

The utility model provides a fixed-height movable heating auxiliary device, a desoldering device and a desoldering workbench, and relates to the technical field of electronic manufacturing, the fixed-height movable heating auxiliary device comprises a mounting seat and at least two swing arms; the mounting seat is used for fixedly mounting the device; the swing arms are sequentially and horizontally connected in a rotating mode, one swing arm located at the tail end is connected with the installation base, the other swing arm located at the tail end is used for being connected with a hot air gun, and at least two connection positions between the installation base and the at least two swing arms are horizontal rotating connection. Through the structure that the mounting base and the at least two swing arms are sequentially and horizontally connected in a rotating mode and at least two swing arms are connected in a horizontal rotating mode, free movement on the horizontal plane with the fixed height is achieved, and the defects that in the prior art, a handheld heat gun is unstable in temperature control, poor in operation precision and high in practicability are overcome. And the existing auxiliary device cannot realize the horizontal flexible movement of the hot air gun.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic manufacturing technical field especially relates to a fixed height mobile heating auxiliary device, dismounting and welding device and dismounting and welding workstation. BACKGROUND

[0002] In the manufacturing and repair process of electronic products, hot air gun is often used for dismounting and welding operation of electronic components. Especially for high-precision electronic products such as integrated circuit chips, the height of the hot air gun needs to be accurately controlled during dismounting and welding to maintain the distance between the hot air gun and the components to be dismounted and welded, so as to control the dismounting and welding temperature, avoid thermal damage caused by too high temperature, or too long heating time caused by too low temperature, and make the surrounding components dismount.

[0003] The traditional dismounting and welding method usually relies on manual operation of hot air gun. However, it is difficult for manual operation to maintain stable height for a long time, resulting in the change of the distance between the hot air gun outlet and the dismounted and welded components, thereby causing temperature fluctuation and affecting the dismounting and welding quality. In addition, long-time manual operation of hot air gun for dismounting and welding operation is easy to cause fatigue of the operator, thereby affecting the stability and precision of operation.

[0004] In the prior art, hot air gun is fixed at a certain height by simple bracket or clamp. However, these brackets or clamps can only provide simple fixing support and cannot realize flexible movement of hot air gun in horizontal plane, which is difficult to meet the complex and precise dismounting and welding requirements.

[0005] Therefore, a heating auxiliary device capable of assisting fixed height movement of hot air gun and realizing flexible operation in horizontal direction is needed to improve the temperature control precision, operation convenience and work efficiency of dismounting and welding process, so as to ensure the repair quality of precision electronic products. UTILITY MODEL CONTENTS

[0006] In order to overcome the problems in the related art, one of the purposes of the utility model is to provide a fixed height mobile heating auxiliary device, which is connected by at least two swing arms in turn and has at least two horizontal rotary connections, so as to realize free movement in horizontal plane at fixed height, overcome the problems of unstable temperature control and poor operation precision of handheld hot air gun in the prior art, and realize flexible movement of hot air gun in horizontal direction by using the existing auxiliary device.

[0007] A fixed height mobile heating auxiliary device comprises:

[0008] A mounting seat is used for fixed installation of the device;

[0009] At least two swing arms, which are sequentially connected by horizontal rotation, one of the swing arms at the end is connected to the mounting base, and the other swing arm at the end is used to connect the hot air gun, and the connection between the mounting base and the at least two swing arms is at least two horizontal rotation connections.

[0010] The number of swing arms can be two, three, four or more. The horizontal rotation connection can be achieved in various ways, such as pin shaft connection, ball bearing connection or other mechanisms that allow horizontal rotation, and the connection method is not limited to a specific connector, such as a damping shaft. The material of the swing arm can be made of metal, plastic, composite material or other materials with sufficient strength and heat resistance. The mounting base can be fixed on the workbench by bolt fixation, clamp fixation, welding fixation, rivet fixation, etc. The connection method of the hot air gun can be buckle connection, screw connection, magnetic attraction connection, etc., as long as it can stably connect the hot air gun.

[0011] Further, a height adjustment mechanism is connected between the mounting base and the swing arm or between the two swing arms, used to adjust the height of the hot air gun relative to the workpiece.

[0012] The height adjustment mechanism is connected between the mounting base and the swing arm or between the two swing arms, which realizes the precise control of the height of the hot air gun, further improves the temperature control accuracy in the process of disassembly and welding, and can flexibly adjust the distance between the hot air gun and the workpiece according to different workpiece heights and disassembly and welding requirements, avoiding the problem of insufficient heating or overheating caused by improper height, and improving the disassembly and welding quality and success rate.

[0013] The height adjustment mechanism can be a threaded lifting mechanism, a gear and rack lifting mechanism, a pneumatic / hydraulic lifting mechanism, a slide rail locking mechanism, etc. The position of the height adjustment mechanism is not limited to being connected between the mounting base and the swing arm or between the two swing arms. In theory, as long as the height can be adjusted, it can also be connected to other parts, such as being connected between the mounting base and the end swing arm that fixes the hot air gun. The adjustment method of the height adjustment mechanism can be manual adjustment or electric adjustment.

[0014] Further, the adjacent swing arms are staggered in the vertical direction.

[0015] The adjacent swing arms are staggered in the vertical direction, so that the swing arms can avoid interfering with each other when rotating horizontally, ensuring the smoothness and flexibility of the swing arm rotation.

[0016] The staggered way does not necessarily need to be completely staggered, but can also be partially staggered, or through special hinge structure design, interference can be avoided without completely staggering.

[0017] Further, the swing arm comprises a first swing arm, a second swing arm and a third swing arm.

[0018] One end of the first swing arm is rotationally connected to the mounting seat, and the other end is rotationally connected to the second swing arm.

[0019] The three-section swing arm structure and the specific height adjusting mechanism position ensure flexible movement in the horizontal direction, and enable the operator to more conveniently and quickly adjust the height and position of the hot air gun, thereby improving the operation efficiency.

[0020] Further, the horizontal rotation connection is realized through a damping rotation shaft.

[0021] The damping rotation shaft enables the swing arm to have a certain damping feeling during rotation, avoids free swinging of the swing arm due to accidental collision or gravity, improves the safety and stability of the device, and enables the operator to more finely control the position of the hot air gun during movement.

[0022] Further, the height adjusting mechanism is connected to the two swing arms, and the height adjusting mechanism comprises a vertically arranged threaded rod, one of the swing arms is provided with a threaded hole matched with the threaded rod, the threaded rod is threadedly matched with the threaded hole, and one end of the threaded rod is rotationally connected to the other swing arm through a rotation shaft.

[0023] The height is adjusted through the threaded matching of the threaded rod and the threaded hole, and the adjustment is simple, reliable, high in accuracy and easy to operate.

[0024] Further, the fixing mechanism is connected to the other swing arm located at the end, and the fixing mechanism comprises a fixing ring, the axis of the fixing ring is vertical, the upper end surface of the fixing ring is used for abutting against the main body of the hot air gun, and the inner diameter of the fixing ring is greater than the outer diameter of the hot air gun nozzle.

[0025] The vertical axis of the fixing ring ensures that the hot air gun can blow vertically downward, the abutment of the upper end surface of the fixing ring against the main body of the hot air gun provides stable support, and the inner diameter greater than the outer diameter of the hot air gun nozzle ensures smooth discharge of the hot air, thereby avoiding backflow.

[0026] The second purpose of the utility model is to provide a welding and dismounting device comprising the height fixing and moving heating auxiliary device.

[0027] The hot air gun is directly integrated on the end swing arm of the auxiliary device to form an integrated dismounting and welding tool.

[0028] The integrated hot air gun can not be completely integrated, but can be detachably connected.

[0029] The third purpose of the utility model is to provide a dismounting and welding workbench, which comprises the fixed-height mobile heating auxiliary device or the dismounting and welding device, and further comprises a workbench body, the mounting seat is fixed on the workbench body, and a dismounting and welding table is arranged on the table top of the workbench body and used for placing objects to be dismounted and welded.

[0030] The mounting seat of the auxiliary device or the dismounting and welding device is fixed on the workbench body to form a stable dismounting and welding platform.

[0031] Further, the dismounting and welding table comprises a base and a lifting table top.

[0032] The height of the dismounting and welding table can be flexibly adjusted according to the height of the object to be dismounted and welded by arranging the lifting table top, thereby further expanding the application range of the dismounting and welding workbench, and making the workbench adapt to dismounting and welding objects of different heights and improving the convenience and flexibility of dismounting and welding operation.

[0033] The utility model has the advantages of:

[0034] The fixed-height mobile dismounting and welding auxiliary device provided by the utility model provides stable support through the mounting seat, and is connected to the end swing arm through at least two horizontal rotary connections, so that the hot air gun connected to the end swing arm can be flexibly moved in the horizontal direction, and the flexibility and stability of the device are ensured by at least two horizontal rotary connections during the movement. BRIEF DESCRIPTION OF DRAWINGS

[0035] Fig. 1is a horizontal direction schematic view of the fixed-height mobile heating auxiliary device provided in Embodiment 1 of the present application;

[0036] Fig. 2 is a vertical direction schematic view of the fixed-height mobile heating auxiliary device provided in Embodiment 1 of the present application;

[0037] Fig. 3 is a horizontal direction schematic view of a dismounting and welding workbench provided by the present application.

[0038] Reference signs:

[0039] 100, mounting seat; 200, swing arm; 210, threaded hole; 300, height adjusting mechanism; 310, threaded rod; 320, rotating handle; 400, hot air gun; 500, damping rotating shaft; 600, fixing mechanism; 610, fixing ring; 700, workbench body; 800, dismounting and welding workbench; 810, base; 820, lifting table top. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present application will be described in more detail by referring to the attached drawings. Although the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0041] Embodiment 1

[0042] As shown in Figs. 1-3 , the present embodiment provides a fixed-height mobile heating auxiliary device, which comprises a mounting seat 100, a first swing arm 200, a second swing arm 200, a third swing arm 200, a height adjusting mechanism 300 and a fixing ring 610.

[0043] The mounting seat 100 is used to fix the entire device on a workbench. The bottom of the mounting seat 100 is provided with a threaded hole, and the mounting seat 100 can be fixed on the workbench by bolts.

[0044] The first swing arm 200, the second swing arm 200 and the third swing arm 200 are connected in sequence in the horizontal direction. One end of the first swing arm 200 is connected to the mounting seat 100 through a damping rotating shaft 500, and the other end is connected to the second swing arm 200 through a damping rotating shaft 500. Adjacent swing arms 200 are arranged in a staggered manner in the vertical direction, and the vertical heights of the first swing arm 200, the second swing arm 200 and the third swing arm 200 decrease in sequence, so that the swing arms 200 can avoid interfering with each other when rotating.

[0045] The height adjusting mechanism 300 is connected between the second swing arm 200 and the third swing arm 200. The height adjusting mechanism 300 comprises a vertically arranged threaded rod 310, a threaded sleeve and a locking nut. The end of the second swing arm 200 is provided with a mounting block, and the mounting block is provided with a vertical through hole. The threaded sleeve is fixed in the through hole, and the inner wall of the threaded sleeve is provided with an internal thread. The threaded rod 310 cooperates with the threaded sleeve, and the threaded rod 310 can move up and down in the threaded sleeve. The lower end of the threaded rod 310 is connected to the front end of the third swing arm 200 through a rotating shaft, so that the third swing arm 200 can rotate relative to the threaded rod 310. The upper end of the threaded rod 310 is provided with a rotating handle 320 for manually rotating the threaded rod 310. The threaded rod 310 and the threaded sleeve have a large frictional resistance, so that the threaded rod 310 is fixed on the threaded sleeve.

[0046] The other end of the third swing arm 200 is connected with a fixing ring 610 for fixing the hot air gun 400. The axis of the fixing ring 610 is vertical, and the inner diameter of the fixing ring 610 is slightly larger than the outer diameter of the air nozzle of the hot air gun 400, but smaller than the outer diameter of the main body of the hot air gun 400. The upper end surface of the fixing ring 610 abuts against the main body of the hot air gun 400, so as to fix the hot air gun 400 on the third swing arm 200.

[0047] In use, the mounting seat 100 is first fixed on the workbench, and then the hot air gun 400 is inserted into the fixing ring 610, so that the main body of the hot air gun 400 abuts against the upper end surface of the fixing ring 610. By rotating the rotating handle 320 of the height adjusting mechanism 300, the height of the third swing arm 200 can be adjusted, so as to adjust the height of the hot air gun 400 relative to the workpiece. By rotating the first swing arm 200, the second swing arm 200 and the third swing arm 200, the hot air gun 400 can be moved to any position above the workpiece. The use of the damping rotating shaft 500 makes the rotation of the swing arm 200 have a certain damping, and the operation is more stable.

[0048] The embodiment provides a height fixing and moving heating auxiliary device. The hot air gun 400 can be flexibly moved in the horizontal plane through the horizontal rotation connection of the first swing arm 200, the second swing arm 200 and the third swing arm 200 in sequence. The rotation of the swing arm 200 has a certain damping through the connection of the swing arm 200 and the damping rotating shaft 500, the operation is more stable, and the positioning is more accurate. The height of the hot air gun 400 can be accurately adjusted through the height adjusting mechanism 300 arranged between the second swing arm 200 and the third swing arm 200, and the distance between the hot air gun 400 and the workpiece can be flexibly adjusted according to different workpiece heights and disassembly and welding requirements. The hot air gun 400 can be conveniently fixed on the third swing arm 200 through the fixing ring 610, and the structure of the fixing ring 610 ensures that the hot air gun 400 can blow vertically downward, thereby ensuring the heating effect. The device has a simple structure and is convenient to operate, and can significantly improve the efficiency and quality of disassembly and welding work.

[0049] Example 2

[0050] like Figs. 1-3 As shown, this embodiment provides a fixed-height moving heating auxiliary device, which includes a mounting base 100, a first swing arm 200, a second swing arm 200, a third swing arm 200, a fourth swing arm 200, a height adjustment mechanism 300, and a connecting mechanism for connecting a hot air gun 400.

[0051] Mounting base 100 is used to secure the entire device to the worktable. In this embodiment, mounting base 100 is secured by riveting.

[0052] The height adjustment mechanism 300 adopts an electrically controlled linear slide rail mechanism. The linear slide rail is vertically fixed to the mounting base 100, and a slider is mounted on the rail, allowing it to slide up and down along the rail. The first swing arm 200 is fixedly connected to the slider via a connector. The slide rail contains a motor and transmission mechanism. The motor drives the slider to move up and down along the rail, which in turn moves the first swing arm 200 and all other swing arms 200 up and down, thus adjusting the height of the hot air gun 400. The control panel is located on the mounting base 100, and the start / stop of the motor and the direction of slider movement can be controlled via buttons on the control panel.

[0053] The first, second, third, and fourth swing arms 200 are sequentially connected and rotate horizontally. Adjacent swing arms 200 are connected by a damping shaft 500. The damping shaft 500 provides damping during rotation, preventing free swaying and improving operational stability and safety. Adjacent swing arms 200 are staggered vertically, with a certain height difference, to avoid interference during horizontal rotation and ensure smooth rotation.

[0054] The fourth swing arm 200, i.e., the last swing arm 200, has a connecting mechanism at its other end for connecting the hot air gun 400, which in this embodiment is a threaded connection mechanism. The end of the fourth swing arm 200 is provided with a threaded connector, and the tail of the hot air gun 400 is provided with a corresponding threaded interface. By screwing the threaded interface of the hot air gun 400 to the threaded connector of the fourth swing arm 200, the hot air gun 400 can be securely fixed to the fourth swing arm 200.

[0055] In use, the hot air gun 400 is connected to the fourth swing arm 200 through the threaded connection mechanism. The motor of the height adjustment mechanism 300 is controlled through the control panel to move the slider up and down along the slide rail, thereby adjusting the height of the hot air gun 400 relative to the workpiece. Through the rotation of the first swing arm 200, the second swing arm 200, the third swing arm 200 and the fourth swing arm 200, the hot air gun 400 can be moved to any position above the workpiece. Due to the adoption of four swing arms 200 and damping shafts 500, the movement range of the hot air gun 400 is larger, the positioning is more accurate, and the operation is more stable.

[0056] The embodiment provides a height-adjustable moving heating auxiliary device. Compared with the embodiment 1, the embodiment adopts four swing arms 200, so that the movement range of the hot air gun 400 is larger and a wider working area can be covered; the height adjustment is realized through the electric control linear slide rail mechanism, so that the height adjustment is more accurate and convenient, the height of the hot air gun 400 can be accurately controlled through the control panel, and the automation degree is higher; the threaded connection mechanism is adopted to fix the hot air gun 400, the connection is firm and reliable, and the disassembly and assembly are convenient. The device is suitable for disassembly and welding operation with high requirements for automation degree and operation accuracy, and can further improve the production efficiency.

[0057] Embodiment 3

[0058] As shown in Figs. 1-3 The embodiment provides a disassembly and welding device, which comprises a mounting seat 100, a first swing arm 200, a second swing arm 200, a third swing arm 200, a height adjustment mechanism 300 and a hot air gun 400 integrated in the third swing arm 200.

[0059] The mounting seat 100 is fixed by welding to fix the whole disassembly and welding device on the workbench.

[0060] The first swing arm 200, the second swing arm 200 and the third swing arm 200 are connected in sequence and rotate horizontally. One end of the first swing arm 200 is connected to the mounting seat 100 through the damping shaft 500, and the other end is connected to the second swing arm 200 through the damping shaft 500. The other end of the second swing arm 200 is connected to the height adjustment mechanism 300. The height adjustment mechanism 300 is rotatably connected to the third swing arm 200 through the damping shaft 500. Adjacent swing arms 200 are arranged in a staggered manner in the vertical direction, and the vertical heights of the first swing arm 200, the second swing arm 200 and the third swing arm 200 are alternately arranged one above another.

[0061] The height adjustment mechanism 300 is connected between the second swing arm 200 and the third swing arm 200, and is used for adjusting the height of the hot air gun 400 relative to the workpiece.

[0062] The height adjusting mechanism 300 adopts an electric push rod, which includes a cylinder body and a push rod. The cylinder body is fixedly connected with the end of the second swing arm 200, and the push rod is connected with the third swing arm 200 through a damping rotating shaft 500 at the end thereof. By controlling the extension and retraction of the electric push rod, the height of the third swing arm 200 can be adjusted, so as to realize the height adjustment of the hot air gun 400 integrated in the third swing arm 200.

[0063] The third swing arm 200 is integrated with the hot air gun 400. The heating assembly and the fan and other components of the hot air gun 400 are directly installed inside the third swing arm 200, and the air nozzle of the hot air gun 400 vertically extends downward from the end of the third swing arm 200.

[0064] A control center is further included, which includes a controller and a control panel. The controller is connected with the electric push rod and the hot air gun 400 integrated in the third swing arm 200, and the control panel is used for work parameters such as the temperature of the hot air gun 400, the air speed of the hot air gun 400, the hot air concentration, and the height of the hot air gun 400.

[0065] The embodiment provides a dismounting and welding device integrated with the hot air gun 400. The flexible movement of the hot air gun 400 is realized through the sequential horizontal rotation connection of the three swing arms 200. The electric push rod is adopted as the height adjusting mechanism 300, so as to realize the accurate control and remote adjustment of the height of the hot air gun 400. The hot air gun 400 is integrated in the third swing arm 200, so that the device is more compact, the integration degree is higher, and the operation is more convenient. The setting of the control center facilitates the adjustment of various work parameters of the hot air gun 400. The device has the advantages of high integration degree, high automation degree, high operation precision, and convenient use, and is suitable for occasions with high requirements on the dismounting and welding efficiency and quality.

[0066] Embodiment 4

[0067] As shown in Figs. 1-3 The embodiment provides a dismounting and welding workbench, which includes a workbench body 700 and a fixed-height mobile heating auxiliary device.

[0068] The fixed-height mobile heating auxiliary device includes a mounting seat 100, two swing arms 200, and a mechanism for fixing a hot air gun 400.

[0069] A mounting rack higher than the table top is arranged on the workbench. In the embodiment, the mounting seat 100 is fixedly connected with the bottom of the mounting rack by welding, so as to save the space of the table top.

[0070] Two swing arms 200 are connected in turn horizontally. One end of the first swing arm 200 is connected with the mounting seat 100 horizontally, and one end of the second swing arm 200 is connected with the first swing arm 200 horizontally. The horizontal rotary connection can adopt bearing connection or pin shaft connection. The material of the two swing arms 200 adopts the combination of plastic and metal, for example, the main part of the swing arm 200 adopts plastic material to reduce weight and cost, and the metal material is used at the connection of the swing arm 200 and the position with large stress to ensure the strength and stability. The swing arms 200 are arranged in vertical direction.

[0071] The auxiliary device does not set a separate height adjusting mechanism 300, and can be used by adjusting the height of the dismounting and welding table 800.

[0072] The other end of the second swing arm 200 is connected with a mechanism for fixing the hot air gun 400. In this embodiment, the mechanism for fixing the hot air gun 400 adopts a clamp. The clamp is provided with two opposite arc-shaped clamping parts, and rubber pads or silica gel pads can be arranged on the inner side of the arc-shaped clamping parts to increase the friction and protect the surface of the hot air gun 400. The distance between the two arc-shaped clamping parts can be adjusted by adjusting the bolt, so that the hot air gun 400 is tightly fixed on the second swing arm 200.

[0073] A dismounting and welding table 800 is arranged on the table top of the workbench body 700, and the dismounting and welding table 800 is used to place the workpiece to be dismounted and welded. The dismounting and welding table 800 includes a base 810 and a lifting table top 820. The lifting table top 820 is connected to the base 810 through an electric push rod. The electric push rod can control the lifting of the lifting table top 820. The lifting range of the lifting table top 820 can be designed according to actual needs, and some clamps or positioning devices can be arranged on the upper surface of the lifting table top 820 to facilitate the fixation of the workpiece to be dismounted and welded.

[0074] In use, the workpiece to be dismounted and welded is placed on the lifting table top 820 and fixed by the clamp or positioning device. Then, the height of the lifting table top 820 is adjusted by the electric push rod. Then, the hot air gun 400 is moved to the appropriate position above the workpiece by rotating the two swing arms 200. And the height is adjusted more finely by the lifting of the lifting table top 820. After adjusting the position and height, the hot air gun 400 can be started to perform the dismounting and welding work.

[0075] The embodiment provides a dismounting and welding workbench, through the sequential horizontal rotation connection of two swing arms 200, flexible movement of a hot air gun 400 in a horizontal plane is realized, the hot air gun 400 is fixed through a clamp, the structure is simple, and the dismounting and assembling are convenient, through the arrangement of a dismounting and welding table 800 on the workbench and the adoption of an electric push rod to control the lifting of a lifting table top 820, the height of the dismounting and welding table 800 can be flexibly adjusted according to different workpiece heights, and the dismounting and welding precision and quality are improved. The workbench is compact in structure, convenient to operate and capable of meeting the needs of various dismounting and welding operations.

[0076] The specific embodiments of the utility model are described in detail above, but these specific embodiments are only used to illustrate the technical scheme of the utility model, rather than limit it. The person skilled in the art can modify and change the above-mentioned embodiments according to actual needs, for example, change the number of swing arms, the form of height adjusting mechanism, the way of fixing the hot air gun, etc. These modifications and changes should fall within the protection scope of the utility model.

[0077] Unless otherwise specifically stated, the relative arrangements of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed herein, any specific value should be interpreted as merely an example, and not as a limitation. Thus, other examples of the example embodiments can have different values. It should be noted that like numbers and letters refer to like elements throughout the several views, and thus, once an element is defined in one view, it should not require further discussion in subsequent views.

[0078] In addition, it should be noted that the use of the words "first", "second", and the like, is merely to distinguish between similar items, and the above words do not have special meanings unless otherwise stated. Therefore, they should not be understood as limiting the scope of protection of the present application.

[0079] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A height-controlled moving heating auxiliary device, characterized in that, include: Mounting base (100) is used to fix the fixed height moving heating auxiliary device; At least two swing arms (200) are connected horizontally in sequence. One swing arm (200) at the end is connected to the mounting base (100), and the other swing arm (200) at the end is used to connect to the hot air gun (400). At least two of the connections between the mounting base (100) and the at least two swing arms (200) are horizontally rotatable connections.

2. The fixed-height moving heating auxiliary device according to claim 1, characterized in that: It also includes a height adjustment mechanism (300) connected between the mounting base (100) and the swing arm (200) or between the two swing arms (200) for adjusting the height of the hot air gun (400) relative to the workpiece.

3. The fixed-height moving heating auxiliary device according to claim 1 or 2, characterized in that: The adjacent swing arms (200) are staggered in the vertical direction.

4. The fixed-height moving heating auxiliary device according to claim 2, characterized in that: The swing arm (200) includes a first swing arm (200), a second swing arm (200), and a third swing arm (200); One end of the first swing arm (200) is rotatably connected to the mounting base (100), and the other end is rotatably connected to the second swing arm (200). The other end of the second swing arm (200) is connected to the height adjustment mechanism (300). The height adjustment mechanism (300) is rotatably connected to the third swing arm (200), and the other end of the third swing arm (200) is used to connect to the hot air gun (400).

5. The fixed-height moving heating auxiliary device according to claim 1 or 4, characterized in that: The horizontal rotation connection is achieved through a damping shaft (500).

6. The fixed-height moving heating auxiliary device according to claim 2, characterized in that: The height adjustment mechanism (300) connects two of the swing arms (200). The height adjustment mechanism (300) includes a vertically arranged threaded rod (310). One of the swing arms (200) is provided with a threaded hole (210) that mates with the threaded rod (310). The threaded rod (310) is threadedly engaged with the threaded hole (210). One end of the threaded rod (310) is rotatably connected to the other swing arm (200) via a rotating shaft.

7. The fixed-height moving heating auxiliary device according to claim 1, characterized in that: It also includes a fixing mechanism (600) connected to another swing arm (200) located at the end. The fixing mechanism (600) includes a fixing ring (610) with its axis vertical. The upper end face of the fixing ring (610) is used to abut against the body of the hot air gun (400). The inner diameter of the fixing ring (610) is larger than the outer diameter of the nozzle of the hot air gun (400).

8. A desoldering device, characterized in that, The device includes a fixed-height moving heating auxiliary device according to any one of claims 1-6, wherein another swing arm (200) located at the end of the fixed-height moving heating auxiliary device integrates a hot air gun (400).

9. A desoldering workbench, characterized in that, The device includes the fixed-height moving heating auxiliary device according to any one of claims 1-7 or the desoldering device according to claim 8, and further includes a workbench body (700), the mounting base (100) is fixed on the workbench body (700), and a desoldering table (800) is provided on the table surface of the workbench body (700), the desoldering table (800) is used to place the object to be desoldered.

10. The desoldering workbench according to claim 9, characterized in that: The desoldering station (800) includes a base (810) and a lifting platform (820).

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