A high-frequency welding device for manufacturing thin copper tubes and its calibration process

Abstract

The present invention relates to a high-frequency welding device for manufacturing thin copper tubes, comprising a high-frequency soldering table, on which a driving member for driving the vertical displacement of a heating coil is provided. The device is characterized in that it comprises: an equipment compartment, the equipment compartment being opened inside the high-frequency soldering table, the high-frequency soldering table being provided with a plurality of connecting ports connected to the equipment compartment, the plurality of connecting ports being distributed in an arc shape, and the connecting port in the middle portion of the high-frequency soldering table being the main connecting port; an arc path, the arc path and the plurality of connecting ports being distributed on the same arc line; a fixing column, the fixing column being vertically arranged in the main connecting port and being able to slide along the arc path; a clamping assembly, the clamping assembly being used to clamp the thin copper tube; a calibration assembly, the connecting port where the calibration assembly is located being adjacent to the main connecting port, the calibration assembly being connected to the fixing column; and a driving assembly, the driving assembly being used to drive the calibration assembly and the fixing column to slide. The present invention has the effect of improving the welding and production efficiency of thin copper tube-like metal parts and optimizing the operating procedures when welding thin copper tube-like metal parts.

Description

Technical Field

[0001] The present application relates to the field of high-frequency welding, and in particular to a high-frequency welding device for manufacturing thin copper tubes and a calibration process thereof. Background Art

[0002] Nowadays, refrigeration equipment such as air conditioners and refrigerators are essential appliances in every household. They not only provide comfort and convenience, but also keep food fresh and safe, improving quality of life. Refrigeration equipment relies on a cycle of evaporative cooling and compression. In short, the refrigerant transforms from liquid to gas in the evaporator, absorbing heat from the surrounding environment to cool the indoor environment. The gaseous refrigerant enters the condenser through the liquid inlet pipe, dissipating heat to the outside. At the same time, it transforms from gas to liquid, cools down, and flows back to the evaporator, completing a refrigeration cycle. During the refrigeration cycle, the refrigerant flows from the evaporator to the condenser through the liquid inlet pipe group, which guides the refrigerant flow.

[0003] Copper is commonly used for liquid inlet pipe assemblies due to its excellent thermal conductivity and corrosion resistance, enabling it to effectively transfer heat and resist corrosion from refrigerants and environmental chemicals. Furthermore, copper has good plasticity. Liquid inlet pipe assemblies are made by welding the ends of multiple inlet pipes to the main pipeline. Due to the small diameter of the inlet pipes, welding requires high precision, and welding of the inlet pipe assembly involves a high-frequency welding process.

[0004] High-frequency welding is a commonly used welding method. It uses a high-frequency current passing through the workpiece surface to generate frictional heat, melting the metal material on the contact surface to form a weld. It is very suitable for small-diameter copper tubes. High-frequency welding is characterized by high efficiency, high quality, and energy saving. It has a high welding speed and is suitable for automated production. Using a high-frequency welding machine to weld liquid inlet pipes can achieve mass production of copper pipe assemblies, thereby improving the production efficiency of liquid inlet pipe groups.

[0005] Briefly describe the high-frequency welding process used for thin copper tubes. Dip the welding ring in flux and put it on the connection between the thin copper tube and the main tube. Move the induction coil to the horizontal plane of the welding ring to heat it. The welding ring melts to complete the welding of the thin copper tube and the main tube.

[0006] To ensure consistent welding quality, workers should regularly check the horizontality, verticality, and concentricity of the induction coil. Furthermore, the liquid inlet pipe is not a regularly shaped workpiece. Therefore, when replacing thin copper tubes of different diameters, the welding position, specifically the feed height of the induction coil, needs to be recalibrated to avoid misalignment of the welding point, which could affect the welding of the workpiece. However, most small and medium-sized enterprises today still use traditional high-frequency welding tables, which lack calibration components. To check the horizontality of the induction coil, workers must place it on an inspection fixture after it has cooled, visually observe the induction coil's tilt, and manually adjust it. Furthermore, traditional high-frequency welding tables also suffer from shortcomings such as a lack of positioning components and weak clamping effects.

[0007] Regarding the above-mentioned related technologies, the inventor believes that for the production of thin copper tubes with small diameters and high precision requirements, the calibration of the induction coil needs to be more frequent, so it is necessary to design a calibration component structure that is easy for workers to operate, so as to shorten the time spent by workers on calibrating the induction coil as much as possible, thereby improving the production efficiency of the liquid inlet pipe group. Summary of the Invention

[0008] In order to improve the welding and production efficiency of thin copper tube-like metal parts and optimize the operation process during welding of thin copper tube-like metal parts, the present invention provides a high-frequency welding device for thin copper tube manufacturing and a calibration process flow thereof.

[0009] The present invention provides a high-frequency welding device for manufacturing thin copper tubes, which adopts the following technical solutions:

[0010] A high-frequency welding device for manufacturing thin copper tubes, comprising a high-frequency soldering table, a heating coil horizontally arranged on the high-frequency soldering table, and a driving member for driving the heating coil to move vertically. The device is characterized in that:

[0011] An equipment compartment is provided inside the high-frequency soldering station. A plurality of communication ports connected to the equipment compartment are provided on the high-frequency soldering station. The plurality of communication ports are distributed in an arc shape, and the communication port in the middle part of the high-frequency soldering station is the main communication port.

[0012] An arc path, wherein the arc path and the plurality of communication openings are alternately distributed on the same arc line, and the arc path is used to connect adjacent communication openings;

[0013] A fixed column, the fixed column is vertically arranged in the main communication port, the fixed column is coaxially arranged with the heating coil, the fixed column is arranged corresponding to the arc, and the fixed column can slide along the arc;

[0014] A clamping assembly, which is arranged at the top of the fixing column and is used to fix the thin copper tube;

[0015] A calibration component, wherein the bottom end of the calibration component is disposed in another communication port, the communication port where the calibration component is located is adjacent to the main communication port, the calibration component is connected to the fixing column, and the calibration component is used to calibrate the horizontality of the heating coil;

[0016] The driving assembly is arranged inside the equipment compartment and is used to drive the calibration assembly and the fixed column to slide along the arc.

[0017] By adopting the above technical solution, structural improvements are made on the table top of the traditional high-frequency soldering station to solve the problem that the traditional high-frequency soldering station does not have a calibration component, so as to improve the current situation where the position and level of the heating coil are frequently and repeatedly calibrated, which is troublesome. If a calibration component is set, it is necessary to first consider that the calibration component does not hinder the high-frequency welding process of the thin copper tube. The implementation solution is to set the calibration component on one side of the clamping component, and change the position of the clamping component and the calibration component in the horizontal plane when calibration is required to simplify the calibration process of the heating coil; the placement of the drive component also needs to be considered. The implementation solution is to raise the table top of the high-frequency soldering station and dig out an equipment compartment inside the high-frequency soldering station to place various machines for driving the clamping component and the calibration component. Structure; If the coil is in a state of frequent movement for a long time, it may cause the coil to be skewed, and the workers need to calibrate it regularly. In the initial state, the heating coil is set outside the fixed column and is under the clamping component. The following briefly describes the worker's calibration operation process. First, the worker adjusts the heating coil to the top of the fixed column to ensure that the movement of the fixed column will not interfere with the heating coil, and then drives the clamping component and the calibration component to move at the same time through the driving component, so that the calibration component is moved to the main connecting port, and then the driving part on the high-frequency soldering table drives the heating coil to move downward, and adjusts the horizontality and verticality of the heating coil through the calibration component. After the calibration is completed, the heating coil moves up, and the worker operates the calibration component and the driving component to reset at the same time.

[0018] Optionally, the calibration component includes:

[0019] calibration blocks;

[0020] A calibration groove, the calibration groove being provided on the calibration block, the calibration groove being adapted to the heating coil, and the groove wall height of the calibration groove being equal to the height of the heating coil;

[0021] A lifting cylinder is provided below the calibration block, the cylinder body of the lifting cylinder is vertically upwardly arranged, the piston rod end of the lifting cylinder is fixedly connected to the calibration block, and the lifting cylinder is used to change the height of the calibration block.

[0022] By adopting the above technical solution, the calibration groove is adapted to the design of the heating coil and its height is equal to the height of the heating coil, that is, when the deviation values of the horizontality and verticality of the heating coil are both 0, the top side surface of the heating coil is exactly flush with the top side surface of the calibration block. When the horizontality and verticality of the heating coil deviate, the top end of the heating coil clamped in the calibration groove protrudes from the top end of the calibration block. Taking advantage of the high plasticity of the heating coil, workers can easily adjust and reset the heating coil by rotating it or adjusting the root of the heating coil.

[0023] Optionally, the calibration component further includes:

[0024] A pressure plate, the pressure plate is arranged on the top side of the calibration block, and one side of the pressure plate is hinged to the edge of one side of the calibration block;

[0025] A leaf spring is provided at the hinge between the pressure plate and the calibration block, and is used for automatic reset of the pressure plate.

[0026] By adopting the above technical solution, the pressing plate is the main component for flattening the heating coil. When it is found that the top side of the heating coil protrudes from the top side of the calibration block, the worker moves the pressing plate to cover the calibration groove and compacts the crooked heating coil through the pressing plate. Since the heating coil is in the process of regular correction, the horizontal and vertical offsets of the heating coil are small, which can be achieved by compacting and correcting it through the pressing plate. When the worker accidentally touches the heating coil and causes the heating coil to deflect significantly, the driving part on the high-frequency soldering table should first drive the heating coil to abut against the calibration groove and then continue to move downward to correct the heating coil to a roughly horizontal position, and then the worker presses the pressing plate to complete the subsequent correction. It should be noted that in the actual workshop, in order to simplify the operation and reduce the risk of accidental touch by the worker, most of the high-frequency soldering tables have only one switch that controls the movement and power-on of the heating coil from the worker's position, and the control module of the high-frequency soldering table is far away from the worker. Therefore, in order to facilitate the worker to flexibly adjust the relative height of the calibration groove and the heating coil, a lifting cylinder is selected as a lifting part with lower safety risks to meet the component needs of the worker's frequent calibration.

[0027] Optionally, the clamping assembly includes:

[0028] A clamping groove, the clamping groove is provided at the top of the fixing post, a clamping post is fixedly connected to the center of the bottom wall of the clamping groove, the clamping post and the fixing post are coaxially arranged, and the top of the clamping post is flush with the top of the fixing post;

[0029] A plurality of clamping arc plates, wherein the plurality of clamping arc plates are arranged between the inner wall of the clamping groove and the clamping column, the plurality of clamping arc plates form a cylindrical structure surrounding the clamping column, and the top end of each clamping arc plate is arranged in a divergent and inclined manner;

[0030] A plurality of clamping springs are arranged horizontally, the same end of the plurality of clamping springs is fixedly connected to the clamping arc plate, and the other same end of the plurality of clamping springs is fixedly connected to the inner wall of the clamping groove.

[0031] By adopting the above technical solution, the diameter of the thin copper tube is relatively small, and the negligible friction loss for ordinary copper tubes may be fatal loss for thin copper tubes, so the clamping requirements for the clamping components are relatively high. The traditional rigid clamping can easily cause scratches on the thin copper tube if the workers are not paying attention. By setting springs and clamping arc plates, the traditional rigid plug-in is changed to a soft installation with spring compression and tightening, reducing the risk of friction loss of the thin copper tube during installation.

[0032] Optionally, the driving component includes:

[0033] An arc-shaped guide rail is arranged inside the equipment compartment directly below the arc, and the bottom end of the calibration block and the bottom end of the fixed column are both slidably connected to the arc-shaped guide rail;

[0034] An arc-shaped rod, the arc-shaped rod is arranged horizontally, and the two ends of the arc-shaped rod are respectively fixed to the bottom end of the fixed column and the bottom end of the calibration block;

[0035] An active mechanism is used to drive the fixed column and the calibration mechanism to slide along the arc guide rail.

[0036] By adopting the above technical solution, the arc guide rail corresponds to the arc track setting, the bottom end of the fixed column and the calibration component slides along the arc guide rail, and at the same time the top end of the fixed column and the calibration component slides along the arc track to change position. On this basis, setting the guide rail into a curved arc shape can reduce the occupied area of the high-frequency soldering station and save the design cost of the high-frequency soldering station table. At the same time, the arc guide rail bends towards the worker so that all workpieces are closer to the worker, and the worker does not need to walk back and forth to observe the operation.

[0037] Optionally, the active mechanism includes:

[0038] An arc-shaped rack is arranged inside the equipment compartment and is arranged parallel to the arc-shaped guide rail;

[0039] Two bottom plates, the two bottom plates are respectively arranged below the fixed column and the calibration block, one bottom plate is connected to the fixed column, and the other bottom plate is connected to the calibration block;

[0040] Two spur gears, the two spur gears are rotatably connected to the two base plates, and the two spur gears are respectively engaged with the arc-shaped racks;

[0041] The stepper motor is fixed vertically downward on a base plate, and the output shaft of the stepper motor passes through the base plate and is fixed to the center of a spur gear indexing circle.

[0042] By adopting the above technical solution, the arc motion trajectory can be achieved through the meshing of the arc rack and the spur gear. The stepper motor drives the spur gear along the arc rack, driving the fixed column and the calibration mechanism to slide along the arc guide rail at the same time. Compared with other arc motion methods, this method has the advantage of low cost, and the active part can be realized by only one stepper motor; in addition, in some occasions where the displacement accuracy requirements of the calibration component and the fixed column are low, the stepper motor can be replaced with other motors to save the system's operating complexity and cost.

[0043] Optionally, the high-frequency soldering station is further provided with:

[0044] A positioning column, the positioning column is vertically arranged and fixedly connected to the high-frequency soldering table;

[0045] A positioning plate is arranged horizontally, one end of the positioning plate is slidably connected to the positioning post, and a tightening bolt is provided at a portion of the positioning plate corresponding to the connection with the positioning post;

[0046] The positioning hook is horizontally arranged, and the positioning hook end is hinged on the positioning plate, and the hook end of the positioning hook can be rotated to above the positioning column.

[0047] By adopting the above technical solution, when replacing thin copper tubes of different specifications or changing the welding position of thin copper tubes, the feeding height of the heating coil is re-determined. The specific operation is briefly described as follows: under the premise that the heating coil is in the initial position, the worker installs the thin copper tubes of different specifications to be welded in the clamping assembly, and then loosens the tightening bolts on the positioning plate so that the positioning plate can move freely vertically along the positioning column, and then rotates the positioning hook, and presses the end of the positioning hook against the position of the new welding point. The worker tightens the tightening bolts to fix the positioning plate, and then slowly feeds the heating coil through the control module until the heating coil abuts the positioning hook. Since the worker needs to temporarily leave the high-frequency soldering station to operate the control module, it is necessary to ensure the tightening effect of the tightening bolts.

[0048] Optionally, the horizontal height of the portion of the positioning hook close to the hook end is lower than the horizontal height of the portion of the positioning hook close to one end of the positioning plate.

[0049] By adopting the above technical solution, the welding point is located in the middle part of the heating coil. If no height difference is set, when the hook end of the positioning hook abuts the plane where the welding point is located, the top of the heating coil abuts the positioning hook, and the welding point is located at the top of the positioning hook. The worker still needs to adjust it later, so the height of the hook end of the positioning hook needs to be slightly lowered so that the coil of the heating coil abuts the middle part of the positioning hook, and the plane where the welding point is located is in the middle part of the heating coil.

[0050] On the other hand, the present application provides a calibration process flow for high-frequency welding equipment used in the manufacture of thin copper tubes, which adopts the following technical solution:

[0051] A calibration process for high-frequency welding equipment used in the manufacture of thin copper tubes includes the following steps:

[0052] The heating coil moves upward, and the stepper motor drives the spur gear to rotate, driving the calibration component and the central axis to slide along the arc guide rail at the same time, until the calibration component moves to the bottom of the heating coil in the main connecting port;

[0053] The heating coil moves down into the calibration tank, and the worker turns the pressure plate to make the heating coil horizontal and adjusts the base of the heating coil;

[0054] The heating coil continues to move down until it is close to the high-frequency soldering table surface, and the stepper motor drives the calibration component to reset, and the center axis is reset at the same time.

[0055] By adopting the above technical solution and taking advantage of the high plasticity of the heating coil, when the heating coil is in the calibration groove, the staff presses the heating coil through the pressing plate until the heating coil is flush with the top side of the calibration block, replacing the traditional workers' steps of putting the heating coil on the calibration workpiece and manually adjusting the root of the heating coil. This improves the degree of automation of the heating coil calibration process and simplifies the workers' calibration steps.

[0056] A calibration process for high-frequency welding equipment used in the manufacture of thin copper tubes further includes the following steps:

[0057] Calibration of the heating coil feed height for thin copper tubes of different specifications:

[0058] Pass the end of the thin copper tube assembly through the heating coil and place it on the clamping assembly. Move the positioning hook to hook the part where the welding point is located. Move the heating coil upward to abut the hook end of the positioning hook.

[0059] The positioning hook is reset and the heating coil is energized.

[0060] By adopting the above technical solution, the height feed of the heating coil is adjusted on the basis of calibrating the heating coil. In the actual workshop, in order to simplify the operating procedures of the workers, only one switch is set at the operation point of the high-frequency soldering station. When welding a batch of thin copper tubes of the same specification, the control module pre-records the feed height of the heating coil. Each time the switch is pressed, the heating coil is fed to the pre-recorded height. In order to ensure the yield of the same batch of thin copper tubes, the accuracy of the pre-recorded feed height must meet the requirements. Therefore, the implementation point of this solution is that after the worker moves the positioning hook to abut the welding point, the positioning hook must be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 The figure is a schematic diagram of the overall structure of a thin copper tube workpiece manufactured by applying this scheme.

[0062] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0063] Figure 3 This is a cross-sectional view of the high-frequency soldering station designed to highlight the equipment compartment.

[0064] Figure 4 This is a structural diagram designed to highlight the internal components of the equipment compartment.

[0065] Figure 5 yes Figure 4 Magnified view of part A.

[0066] Figure 6 This is a cross-sectional view of the fixing post to highlight the snap-on assembly.

[0067] Figure 7 This is a structural diagram to highlight the calibration components.

[0068] Figure 8 This is a structural diagram designed to highlight the drive components.

[0069] Figure 9 It is a structural diagram highlighting the positioning hook.

[0070] Explanation of reference numerals: 1. Thin copper tube; 11. Liquid inlet main pipe; 12. Mounting head; 13. Liquid inlet pipe; 14. Solder ring; 2. High-frequency soldering station; 21. Output motor; 22. Heating coil; 23. Switch; 24. Equipment compartment; 25. Arc channel; 26. Connecting port; 261. Main connecting port; 262. Secondary connecting port; 3. Fixing assembly; 31. Bottom plate; 32. Adjustable distance plate; 33. Adjustable distance slide rail; 34. Adjustable distance bolt; 35. Fixing column; 36. Adjustable distance slide; 4. Calibration assembly; 41. Calibration column; 42. Calibration plate; 4 3. Guide column; 44. Calibration block; 45. Calibration groove; 46. Pressure plate; 47. Leaf spring; 48. Lifting cylinder; 5. Drive assembly; 51. Arc guide rail; 52. Arc rack; 53. Spur gear; 54. Stepper motor; 55. Arc rod; 6. Snap assembly; 61. Snap groove; 62. Snap column; 63. Snap arc plate; 64. Snap spring; 7. Positioning column; 71. Positioning plate; 72. Tightening bolt; 73. Positioning hole; 731. Positioning bolt; 74. Positioning hook; 741. Positioning groove; 75. Inclined portion. DETAILED DESCRIPTION

[0071] The following is combined with Figure 1-9 This application is described in further detail.

[0072] This embodiment discloses a thin copper tube workpiece. Figure 1A thin copper tube 1 includes a liquid inlet main pipe 11 and a mounting head 12 fixed to one end of the liquid inlet main pipe 11. Three liquid inlet pipes 13 are clamped to the side of the mounting head 12 away from the liquid inlet main pipe 11. The ends of the three liquid inlet pipes 13 closest to the mounting head 12 are all covered with solder rings 14, which abut the mounting head 12. According to the specifications of the thin copper tube 1, a suitable solder ring 14 is selected, dipped in no-clean soldering flux, and then mounted on the thin copper tube 1. The solder ring 14 must be tightly attached to the end face of the mounting head 12 to avoid gaps between the solder ring 14 and the mounting head 12, resulting in ineffective welding of the mounting head 12 and the thin copper tube 1 after welding, thereby causing quality problems.

[0073] Another aspect of the present application discloses a high-frequency welding device for manufacturing the above-mentioned thin copper tube workpiece. Figure 2 A high-frequency welding device for manufacturing thin copper tubes 1 includes a high-frequency soldering station 2 and an output motor 21 arranged on one side of the high-frequency soldering station 2. The output motor 21 is arranged vertically downward above the edge of one side of the high-frequency soldering station 2. The output end of the output motor 21 is fixedly connected to a horizontally arranged heating coil 22. The heating coil 22 extends above the high-frequency soldering station 2. A switch 23 is provided on the edge of the high-frequency soldering station 2 away from the heating coil 22. The worker's workstation is close to the switch 23; a fixing component 3 is provided on the high-frequency soldering station 2. First, in order to ensure the safety of the worker's operation and reduce the risk of accidental touch by the worker, only one switch 23 is provided at the workstation. When the worker presses the switch 23, the output motor 21 drives the heating coil 22 to feed to a pre-recorded height. After the worker fixes the thin copper tube 1 on the fixing component 3, he only needs to press the switch 23 to complete the welding.

[0074] Reference Figure 2 and Figure 3The high-frequency soldering station 2 is hollow inside and serves as an equipment warehouse 24. An arc 25 connecting to the equipment warehouse 24 is provided on the surface of the high-frequency soldering station 2. The arc 25 is curved in an arc shape toward the worker's workstation. The high-frequency soldering station 2 has two connecting ports 26 on the trajectory of the arc 25. The arc 25 is connected to the two connecting ports 26. One connecting port 26 is arranged in the middle of the high-frequency soldering station 2 opposite the switch 23 and is the main connecting port 261. The other connecting port 26 is arranged on one side of the high-frequency soldering station 2 and is the secondary connecting port 262. The fixing component 3 is arranged in the main connecting port 261, and the secondary connecting port 262 is provided with a calibration component 4 for calibrating and correcting the horizontality and verticality of the heating coil 22. A driving component 5 for driving the fixing component 3 and the calibration component 4 to slide along the arc 25 is also provided in the equipment warehouse 24. In order to simplify the surface of the high-frequency soldering station 2, the built-in driving component 5 is set in the equipment compartment 24. When the high-frequency soldering station 2 is in normal working condition, the fixing component 3 is in the main connecting port 261, and the calibration component 4 is in the secondary connecting port 262 on one side of the high-frequency soldering station 2. The calibration component 4 does not interfere with the normal welding of the high-frequency soldering station 2. When the horizontality and verticality of the heating coil 22 need to be calibrated, the staff turns on the driving component 5, and the driving component 5 drives the calibration component 4 and the fixing component 3 to slide along the arc 25 at the same time. When the fixing component 3 slides to the end of the arc 25, the calibration component 4 slides into the main connecting port 261. After the calibration is completed, the calibration component 4 and the fixing component 3 can be reset.

[0075] Reference Figure 3 and Figure 4 The fixing assembly 3 includes a horizontally arranged base plate 31 and a distance-adjusting plate 32 fixed to the surface of the base plate 31. A horizontally arranged distance-adjusting slide plate 36 is slidably connected to the distance-adjusting plate 32. A distance-adjusting slide rail 33 for slidingly guiding the distance-adjusting slide plate 36 is provided on the distance-adjusting plate 32. A sliding groove adapted to the distance-adjusting slide rail 33 is provided on the distance-adjusting slide plate 36 corresponding to the distance-adjusting slide rail 33. A distance-adjusting bolt 34 is threadedly connected to one side of the distance-adjusting slide plate 36, and the end of the distance-adjusting bolt 34 abuts against the distance-adjusting slide plate 36; a vertically arranged fixing column 35 is fixed to the top side of the distance-adjusting slide plate 36; the fixing column 35 is arranged corresponding to the arc channel 25, and the clamping assembly 6 is arranged at the top of the fixing column 35. The staff clamps the thin copper tube 1 on the top of the fixed column 35, and adjusts the position of the fixed column 35 through the distance adjustment mechanism to ensure that the fixed column 35 is in the center of the heating coil 22. The specific adjustment method is that the worker turns the distance adjustment bolt 34, and the end of the distance adjustment bolt 34 pushes the distance adjustment slide 36 along the distance adjustment slide rail 33 to achieve fine-tuning of the distance of the fixed column 35.

[0076] Reference Figure 5 and Figure 6The clamping assembly 6 includes a clamping groove 61 provided at the top of the fixed column 35, and a clamping column 62 is fixedly connected to the central part of the bottom wall of the clamping groove 61. The clamping column 62, the clamping groove 61 and the fixed column 35 are all coaxially arranged; two clamping arc plates 63 are provided on the inner side wall of the clamping groove 61, and the two clamping arc plates 63 are symmetrically distributed along the clamping column 62. The two clamping arc plates 63 form a cylindrical clamping part around the fixed column 35, and the top ends of the two clamping arc plates 63 are divergently inclined in the direction away from the clamping column 62. A plurality of horizontally arranged clamping springs 64 are fixed between the two clamping arc plates 63 and the inner wall of the clamping groove 61, and the two ends of the plurality of clamping springs 64 are respectively fixed to the clamping arc plates 63 and the inner wall of the clamping groove 61. The soft pressing of the clamping spring 64 replaces the traditional rigid clamping method, and the top of the clamping arc plate 63 is tilted to increase the accommodating space for the thin copper tube 1. At the same time, the tilted top of the clamping arc plate 63 covers the top of the fixing column 35, reducing the risk of collision between the bottom wall of the thin copper tube 1 and the top of the fixing column 35, and solving the collision and wear problem caused by traditional rigid installation. The staff aligns the bottom end of the thin copper tube 1 with the clamping column 62 for clamping, and the clamping spring 64 is compressed, and the elastic force is used to make the clamping arc plate 63 push the thin copper tube 1 against the fixing column 35.

[0077] Reference Figure 4 and Figure 7The calibration assembly 4 includes a horizontally arranged bottom plate 31 and a distance-adjusting plate 32 arranged on the bottom plate 31. The distance-adjusting plate 32 and its auxiliary distance-adjusting components in the calibration assembly 4 have the same structure as the distance-adjusting plate 32 and its auxiliary distance-adjusting components in the fixed assembly 3, and are not described in detail. The top of the distance-adjusting slide 36 is fixedly connected to a vertically arranged calibration column 41, the top of the calibration column 41 is fixedly connected to a calibration plate 42, the top of the calibration plate 42 is fixedly connected to a vertically arranged lifting cylinder 48, the top of the lifting cylinder 48 is provided with a calibration block 44, the end of the piston rod of the lifting cylinder 48 is fixedly connected to the bottom end of the calibration block 44, and the calibration block 44 is fixedly connected to the calibration Four vertically arranged guide columns 43 are arranged between the calibration plates 42. The bottom ends of the four guide columns 43 are fixedly connected to the four corners of the calibration plate 42, and the top ends of the four guide columns 43 are fixedly connected to the four corners of the bottom side of the calibration block 44. The guide columns 43 are composed of a flexible and retractable telescopic rod; a calibration groove 45 is provided on the top side of the calibration block 44, and the shape of the calibration groove 45 is adapted to the shape of the heating coil 22. The height of the calibration groove 45 is equal to the height of the heating coil 22 when there is no deviation in the horizontality and verticality; a pressure plate 46 is hinged to the edge of one side of the top side of the calibration block 44, and a leaf spring 47 is provided at the hinge point between the pressure plate 46 and the calibration block 44. The calibration component 4 mainly relies on the calibration groove 45 and the pressure plate 46 to calibrate the horizontality and verticality of the heating coil 22. When the calibration work starts, the worker moves the heating coil 22 down to abut the bottom wall of the calibration groove 45. If the heating coil 22 has a slight offset, the top of the heating coil 22 protrudes from the top part of the calibration block 44. The worker moves the pressure plate 46, and the pressure plate 46 compacts the heating coil 22, and then twists and straightens the root of the heating coil 22. The excellent shaping advantage of the heating coil 22 is used to adjust the heating coil 22, which simplifies the traditional calibration process of using calibration tooling and visually observing the deflection by the staff, and improves the accuracy of the calibration. It is worth mentioning that the output motor 21 already pushes the heating coil 22 downward, and the reason why a lifting cylinder 48 needs to be set up is that in normal work, general staff can only control the quantitative displacement of the heating coil 22, and cannot flexibly lift and lower it according to the workers' wishes during calibration. This is mainly to prevent workers from accidentally touching the control module of the heating coil 22 and causing unexpected dangers. Therefore, under the condition of taking care of the safety of the workers, the lifting cylinder 48 is added as a lifting drive component to drive the calibration block 44 with almost no safety risks. It not only ensures the safety of workers in the workshop, but also solves the problem of inconvenience in calibration. However, when applying it, it should be considered according to the actual situation. The high-frequency welding table 2 in some workshops has a lifting control component for the heating coil 22, and there is no need to set up a lifting cylinder 48.

[0078] Reference Figure 4 and Figure 8A curved guide rail 51 is provided on the bottom wall of the equipment bin 24. The curvature of the curved guide rail 51 is equal to the curvature of the arc path 25, and the curved guide rail 51 and the arc path 25 are arranged in the same vertical arc surface. The two bottom plates 31 are slidably connected to the curved guide rail 51. The bottom ends of the two bottom plates 31 are provided with a sliding groove adapted to the curved guide rail 51. An arc rod 55 is fixed between the two bottom plates 31 to connect the two bottom plates 31. An arc-shaped rack 52 parallel to the arc-shaped guide rail 51 is provided on the curved side of the bottom wall of the equipment bin 24 and the arc-shaped guide rail 51. A spur gear 53 meshing with the arc-shaped rack 52 is provided on both base plates 31. A stepper motor 54 for driving the spur gear 53 is provided on one of the base plates 31. The stepper motor 54 is vertically clamped downward inside the base plate 31, and the output shaft of the stepper motor 54 is fixedly connected to the axle part of the spur gear 53. The output shaft of the stepper motor 54 rotates to drive the spur gear 53 to rotate, and the spur gear 53 rotates along the rack meshing, thereby driving the two base plates 31 to slide along the arc guide rail 51 at the same time, realizing the sliding of the fixed column 35 and the calibration block 44 along the arc path 25 at the same time. In this step, the worker only needs to turn the switch 23 to control the operation of the stepper motor 54. The stepper motor 54 pauses when the calibration slot 45 is facing the heating coil 22. After the calibration is completed, the worker turns the switch 23 again, and the stepper motor 54 reverses the output to drive the fixed column 35 and the calibration block 44 to reset.

[0079] Reference Figure 2 and Figure 9When the locking cam 75 is in the closed position, the locking cam 73 is locked, and the locking cam 73 is locked with the support 71 of the the support frame 71, and the support 73 is locked with the support 71 of the the support frame 71. The reason for setting the positioning hook 74 is that the welding positions of the welding points of thin copper tubes 1 of different specifications are different, that is, the feeding heights of the heating coil 22 are different. For the staff who can only control the single feeding of the heating coil 22, it is necessary to reconfirm the single feeding height of the heating coil 22. The positioning hook 74 can facilitate the staff to re-accurately confirm the feeding height. The general steps are as follows: the staff toggles the positioning hook 74, and the positioning hook 74 rotates along the positioning bolt 731 until the hook end of the positioning hook 74 abuts the thin copper tube 1, loosens the tightening bolt 72 so that the positioning plate 71 can slide freely along the positioning column 7, adjusts the positioning hook 74 to the height of the welding point, and then tightens the tightening bolt 72 to limit the height of the positioning plate 71. Among them, the positioning hole 73 can change the position of the horizontal hinge point of the positioning hook 74 to meet the positioning of welding points at different positions in the horizontal plane.

[0080] The implementation principle of a high-frequency welding device for manufacturing thin copper tubes in an embodiment of the present application is as follows: the traditional high-frequency soldering station 2 lacks a calibration component 4, so that workers need to carry an additional calibration tool set on the heating coil 22 each time they position it, visually inspect the horizontal and vertical offsets of the heating coil 22, and manually adjust the heating coil 22 for correction. Based on this, the embodiment of the present application starts from the structure of the high-frequency soldering station 2, and adds an additional calibration component 4 structure for calibrating the heating coil 22 without interfering with the high-frequency welding process.

[0081] Considering that the heating coil 22 of most high-frequency welding equipment can only move vertically, a drive assembly 5 should be provided to drive the calibration assembly 4 from a position that does not interfere with the high-frequency welding process to directly below the heating coil 22 for calibration. To this end, the height of the high-frequency soldering station 2 is appropriately increased, and the interior is hollowed out to form an equipment compartment 24. The components commonly used by the staff are placed on the table of the high-frequency soldering station 2. On the one hand, this simplifies the complexity of the table tooling of the high-frequency soldering station 2, and on the other hand, the equipment compartment 24 protects the internal workpieces to prevent workers from accidentally touching them and causing safety risks.

[0082] In the embodiment of the present application, the guide rail is set to an arc shape, which can reduce the size of the high-frequency soldering station 2 and make it easier for workers to operate the calibration component 4 and the fixing component 3 at the same time.

[0083] The high-frequency welding process is described as follows: Initially, the heating coil 22 is positioned near the high-frequency soldering station 2 and around the mounting post 35. The worker aligns the installed thin copper tube 1 with the mounting post 62 and snaps it into the mounting slot 61 at the top of the mounting post 35. Then, by pressing the switch 23, the heating coil 22 moves upward to the welding point, aligning it with the center of the heating coil 22. The heating coil 22 is energized to melt the solder ring 14. After welding, a jet of air is used to cool the weld, completing the welding of the thin copper tube 1 to the mounting head 12.

[0084] Note: The horizontality and verticality stated in this application are the horizontality and verticality generally defined in the industry. The horizontality is the rotational offset of the heating coil 22 around its own center line in the horizontal plane, and further, it is the rotational offset of the heating coil 22 itself; the verticality is the rotational offset of the heating coil 22 around the connection point with the output end of the output motor 21, and further, it is the offset of the heating coil 22 as a whole.

[0085] On the other hand, the embodiments of the present application disclose a calibration process flow based on the above-mentioned high-frequency welding equipment for manufacturing thin copper tubes 1.

[0086] Calibration of the horizontality and verticality of the heating coil:

[0087] After confirming that the heating coil 22 is in the off state, the control module of the high-frequency soldering station 2 is operated to lift the heating coil 22. The worker returns to the workstation of the high-frequency soldering station 2 and drives the stepper motor 54 to rotate. The fixed column 35 and the calibration column 41 slide along the arc path 25 at the same time. When the calibration column 41 slides into the main connecting port 261, the fixed column 35 slides and connects to the end of the arc path 25 away from the secondary connecting port 262.

[0088] Press the switch 23, and the lifting cylinder 48 lifts the calibration block 44 to the bottom wall of the calibration groove 45 to the heating coil 22. The worker moves the pressing plate 46 to press the crooked heating coil 22 straight, and then bends the base of the heating coil 22 straight.

[0089] Push aside the pressing plate 46, observe that the top of the heating coil 22 is flush with the top of the calibration block 44, and then press the switch 23 again. The lifting cylinder 48 is reset. When operating the control module, the calibration column 41 and the fixed column 35 are reset at the same time.

[0090] Calibration of the heating coil feed height for thin copper tubes of different specifications:

[0091] Insert the next batch of workpieces of different specifications into the clamping groove 61, confirm the new welding point, select the appropriate positioning hole 73 as the hinge point of the positioning hook 74, and insert the positioning bolt 731 into the positioning groove 741 and the positioning hole 73 to install the positioning hook 74;

[0092] Move the positioning hook 74 so that the hook end of the positioning hook 74 abuts against the body of the thin copper tube 1, loosen the tightening bolt 72, and abut the hook end of the positioning hook 74 against the mounting head 12 of the thin copper tube 1. After maintaining the abutment between the hook end of the positioning hook 74 and the mounting head 12, tighten the positioning bolt 731 to fix the positioning hook 74;

[0093] The control module of the high-frequency soldering station 2 is operated to move the heating coil 22 upward to abut against the higher portion of the positioning hook 74 . The control module records the height of the heating coil 22 as the feeding height and resets the heating coil 22 to its initial state.

[0094] The implementation principle of the calibration process flow of a high-frequency welding equipment for manufacturing thin copper tubes in an embodiment of the present application is as follows: the calibration scheme of the heating coil 22 solves the problem of troublesome alignment of workers under traditional high-frequency welding conditions. The calibration component 4 is designed to replace the traditional workers' naked eye observation and frequent adjustments. The advantage of the higher plasticity of the heating coil 22 is utilized. The pressure plate 46 adjusts the root of the heating coil 22 after compaction, so that the heating coil 22 is fixed in the adjusted state.

[0095] The scheme for confirming the feeding height of the heating coil 22 improves the shortcoming of low accuracy caused by workers' visual inspection in the traditional mode. The setting of the inclined portion 75 of the positioning hook 74 makes the hook end of the positioning hook 74 and the plane where one end of the connecting positioning plate 71 are located at a different height. When the heating coil 22 abuts against the higher part, the welding point confirmed by the hook end is exactly in the center of the heating coil 22, thereby simplifying the process of confirming the feeding height of the heating coil 22, and achieving it in one step without the need for repeated adjustments.

[0096] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A high-frequency welding device for manufacturing thin copper tubes, comprising a high-frequency welding table (2), a heating coil (22) being horizontally arranged on the high-frequency welding table (2), and an output motor for driving the heating coil (22) to move vertically provided on the high-frequency welding table (2), characterized in that: Also includes; An equipment compartment (24), the equipment compartment (24) being provided inside the high-frequency soldering station (2), and a plurality of communication ports (26) being provided on the high-frequency soldering station (2) for communicating with the equipment compartment (24), the plurality of communication ports (26) being distributed in an arc shape, and the communication port (26) in the middle portion of the high-frequency soldering station (2) being a main communication port (261); An arc path (25), wherein the arc path (25) and the plurality of communication openings (26) are alternately distributed on the same arc line, and the arc path (25) is used to connect adjacent communication openings (26); A fixed column (35), wherein the fixed column (35) is vertically arranged in the main communication port (261), the fixed column (35) is coaxially arranged with the heating coil (22), the fixed column (35) is arranged corresponding to the arc path (25), and the fixed column (35) can slide along the arc path (25); A clamping assembly (6), the clamping assembly (6) being arranged at the top end of the fixing column (35), and the clamping assembly (6) being used to fix the thin copper tube (1); A calibration component (4), wherein the bottom end of the calibration component (4) is disposed in another communication port (26), the communication port (26) where the calibration component (4) is located is adjacent to the main communication port (261), the calibration component (4) is connected to the fixing column (35), and the calibration component (4) is used to calibrate the horizontality of the heating coil (22); A driving assembly (5) is provided inside the equipment compartment (24), and the driving assembly (5) is used to drive the calibration assembly (4) and the fixing column (35) to slide along the arc path (25).

2. The high-frequency welding equipment for manufacturing thin copper tubes according to claim 1, characterized in that: The calibration component (4) comprises: calibration block (44); a calibration groove (45), the calibration groove (45) being provided on the calibration block (44), the calibration groove (45) being adapted to the heating coil (22), and the groove wall height of the calibration groove (45) being equal to the height of the heating coil (22); A lifting cylinder (48) is provided below the calibration block (44), a cylinder body of the lifting cylinder (48) is vertically upwardly arranged, an end of a piston rod of the lifting cylinder (48) is fixedly connected to the calibration block (44), and the lifting cylinder (48) is used to change the height of the calibration block (44).

3. The high-frequency welding equipment for manufacturing thin copper tubes according to claim 2, characterized in that: The calibration component (4) further comprises: A pressure plate (46), the pressure plate (46) is arranged on the top side of the calibration block (44), and one side of the pressure plate (46) is hinged to the edge of one side of the calibration block (44); A leaf spring (47) is provided at a hinged position between the pressing plate (46) and the calibration block (44), and the leaf spring (47) is used for automatically resetting the pressing plate (46).

4. The high-frequency welding equipment for manufacturing thin copper tubes according to claim 1, characterized in that: The clamping assembly (6) comprises: A clamping groove (61), the clamping groove (61) is provided at the top end of the fixing column (35), a clamping column (62) is fixedly connected to the center portion of the bottom wall of the clamping groove (61), the clamping column (62) is coaxially arranged with the fixing column (35), and the top end of the clamping column (62) is flush with the top end of the fixing column (35); A plurality of clamping arc plates (63), wherein the plurality of clamping arc plates (63) are arranged between the inner wall of the clamping groove (61) and the clamping column (62), and the plurality of clamping arc plates (63) form a cylindrical structure surrounding the clamping column (62), and the top end of each clamping arc plate (63) is arranged in a divergent and inclined manner; A plurality of clamping springs (64) are arranged horizontally, the same ends of the plurality of clamping springs (64) are fixedly connected to the clamping arc plate (63), and the other same ends of the plurality of clamping springs (64) are fixedly connected to the inner wall of the clamping groove (61).

5. The high-frequency welding equipment for manufacturing thin copper tubes according to claim 3, characterized in that: The driving assembly (5) comprises: An arc-shaped guide rail (51) is arranged inside the equipment compartment (24) directly below the arc path (25), and the bottom end of the calibration block (44) and the bottom end of the fixed column (35) are both slidably connected to the arc-shaped guide rail (51); An arc-shaped rod (55), wherein the arc-shaped rod (55) is arranged horizontally, and both ends of the arc-shaped rod (55) are respectively fixedly connected to the bottom end of the fixing column (35) and the bottom end of the calibration block (44); An active mechanism is used to drive the fixed column (35) and the calibration component (4) to slide along the arc guide rail (51).

6. The high-frequency welding equipment for manufacturing thin copper tubes according to claim 5, characterized in that: The active mechanism includes: An arc-shaped rack (52), wherein the arc-shaped rack (52) is arranged inside the equipment compartment (24), and the arc-shaped rack (52) is arranged parallel to the arc-shaped guide rail (51); Two base plates (31), the two base plates (31) are respectively arranged below the fixing column (35) and the calibration block (44), one base plate (31) is connected to the fixing column (35), and the other base plate (31) is connected to the calibration block (44); Two spur gears (53), the two spur gears (53) are rotatably connected to the two base plates (31), and the two spur gears (53) are respectively engaged with the arc-shaped racks (52); The stepper motor (54) is fixedly connected vertically downward on the base plate (31), and the output shaft of the stepper motor (54) passes through the base plate (31) and is fixedly connected to the center of the index circle of a spur gear (53).

7. The high-frequency welding equipment for manufacturing thin copper tubes according to claim 6, characterized in that: The high-frequency soldering station (2) is also provided with: A positioning column (7), wherein the positioning column (7) is vertically arranged and fixedly connected to the surface of the high-frequency soldering table (2); A positioning plate (71), wherein the positioning plate (71) is arranged horizontally, one end of the positioning plate (71) is slidably connected to the positioning column (7), and a tightening bolt (72) is provided on the portion of the positioning plate (71) corresponding to the portion connected to the positioning column (7); The positioning hook (74) is arranged horizontally, and the end of the positioning hook (74) is hinged on the positioning plate (71). The hook end of the positioning hook (74) can be rotated to the top of the positioning column (7).

8. The high-frequency welding equipment for manufacturing thin copper tubes according to claim 7, characterized in that: The horizontal height of the portion of the positioning hook (74) close to the hook end is lower than the horizontal height of the portion of the positioning hook (74) close to one end of the positioning plate (71).

9. A calibration process for a high-frequency welding device for manufacturing thin copper tubes according to claim 7, comprising the following steps: The heating coil (22) moves upward, and the stepping motor (54) drives the spur gear (53) to rotate, driving the calibration component (4) and the fixed column (35) to slide along the arc guide rail (51) at the same time, until the calibration component (4) moves to the position directly below the heating coil (22) in the main communication port (261); The heating coil (22) moves down into the calibration groove (45), and the worker rotates the pressing plate (46) to make the heating coil (22) horizontal and adjusts the base of the heating coil (22); The heating coil (22) moves upward, and the stepping motor (54) drives the calibration component (4) and the fixing column (35) to reset simultaneously.

10. The calibration process of high-frequency welding equipment for manufacturing thin copper tubes according to claim 9 further comprises the following steps: Calibration of the heating coil feed height for thin copper tubes of different specifications: The end of the thin copper tube (1) assembly is passed through the heating coil (22) and placed on the clamping assembly (6), the positioning hook (74) is moved to hook the portion where the welding point is located, and the heating coil (22) is moved downward to abut against the hook end of the positioning hook (74); The positioning hook (74) is reset and the heating coil (22) is energized.

Images