Automobile parts welding device

Abstract

The present invention discloses an automobile parts welding device, which relates to the technical field of positioning welding of cylindrical workpieces. The automobile parts welding device comprises a bed, wherein the top of the bed is fixedly connected to a top cover, the top of the inner wall of the top cover is fixedly connected to a welding assembly, the top of the bed is fixedly connected to a thermally variable fixing assembly, the thermally variable fixing assembly comprises a C-shaped copper rail, the top of the C-shaped copper rail is slidably connected to a sliding sleeve, the sliding sleeve is internally rotatably connected to an elastic clamping mechanism, the right side of the elastic clamping mechanism is fixedly connected to an induction assembly, and the front of the bed is fixedly connected to an electric control cabinet. The automobile parts welding device, by providing an elastic clamping mechanism, a thermally variable fixing assembly, and an induction assembly, enhances the holding force of the parts raw material by means of thermal deformation, thereby improving the stability and clamping accuracy of the fixed parts, and thus improving the welding accuracy and welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of cylindrical workpiece positioning welding, in particular to an automobile parts welding device. Background Art

[0002] Shaft parts are an important component of machinery, mainly used to support and transmit motion, torque or bending moment. In the automotive industry, common shaft parts include drive shafts and steering shafts. These shaft parts generally go through cutting, forging, blank processing, part heat treatment, welding, finishing, and inspection before they can be manufactured.

[0003] Patent application publication number CN116586885A discloses an automotive parts welding device, which includes a base, a horizontal plate, a vertical plate, a welding assembly, a clamping assembly, a rotating assembly, and a cleaning assembly. The horizontal plate is mounted on the base via the vertical plate, the welding assembly is on the base, and the clamping assembly is mounted on the base via a moving assembly. It includes a support plate, a clamping rod, a push block, etc. The rotating assembly is slidably engaged with the vertical plate and connected to the clamping assembly, which includes a pressing plate, a pressing roller, a first drive motor, and a linkage assembly.

[0004] This patent provides an automobile parts welding device, in which the clamping assembly is prone to wear due to the clamping mechanism during long-term use and frequent adjustment, resulting in a decrease in clamping accuracy, which in turn leads to a decrease in the welding quality of shaft parts. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automobile parts welding device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automobile parts welding device, comprising a bed base, a top cover fixedly connected to the top of the bed base, a welding assembly fixedly connected to the top of the inner wall of the top cover, a thermally variable fixing assembly fixedly connected to the top of the bed base, the thermally variable fixing assembly comprising a C-shaped copper rail, a sliding sleeve slidably connected to the top of the C-shaped copper rail, an elastic clamping mechanism rotatably connected to the inside of the sliding sleeve, an induction assembly fixedly connected to the right side of the elastic clamping mechanism, and an electric control cabinet fixedly connected to the front of the bed base;

[0007] The elastic clamping mechanism comprises:

[0008] A rotating column, which is rotatably connected to the inside of the sliding sleeve. A rectangular blind hole is opened on the right side of the rotating column, which serves as the installation base of the entire elastic clamping mechanism;

[0009] A sliding clamping plate is slidably connected to the interior of the rectangular blind hole of the rotating column and is used to clamp automobile shaft parts;

[0010] The thermally variable fixing frame is fixedly connected to the bottom of the sliding clamping plate and is used to increase the contact area of the elastic clamping mechanism for fixing the shaft parts, thereby increasing the stability of the elastic clamping mechanism for fixing the shaft parts.

[0011] Preferably, a rectangular blind hole is provided on the top of the bed base, rectangular through holes are provided on both sides of the bed base, electric push rods are fixedly connected to both sides of the rectangular blind hole of the bed base, and the electric push rods are electrically connected to the electric control cabinet through wires.

[0012] Preferably, the welding assembly includes a welding gun bracket, which is fixedly connected to the top of the inner wall of the top cover, and a welding gun body is fixedly connected to the bottom of the welding gun bracket. The welding gun body is electrically connected to the electric control cabinet through a wire and is used to perform welding work on automobile shaft parts.

[0013] Preferably, the sliding sleeve includes an inverted T-shaped slide, which is used to realize the sliding of the sliding sleeve on the thermally variable fixed component. The left cross-section of the inverted T-shaped slide is an inverted T-shape, and the interior of the inverted T-shaped slide is a hollow structure. The top, front and back of the inverted T-shaped slide are all provided with rectangular through holes. The left side of the inverted T-shaped slide is fixedly connected to a motor bracket, and the top of the motor bracket is fixedly connected to a servo motor for driving the elastic clamping mechanism to rotate. The top of the inverted T-shaped slide is connected to a horizontal sleeve, and the horizontal sleeve is used to support the rotating column.

[0014] Preferably, the left side of the inverted T-shaped slide is rotatably connected to a push rod sleeve, and the left side of the push rod sleeve is fixedly connected to the right side of the electric push rod, so as to enable the electric push rod to push the sliding sleeve for sliding adjustment, and at the same time convert part of the vibration during the welding process into repeated rotation of a smaller amplitude. The number of the sliding sleeves is two and they are symmetrically distributed on the top of the C-shaped copper rail.

[0015] Preferably, the left side cross-section of the C-shaped copper rail is C-shaped, and there are two C-shaped copper rails, which are symmetrically distributed on the top of the bed base. The C-shaped copper rail is used to achieve stable sliding of the sliding sleeve and utilize heat absorption deformation to assist in stabilizing the sliding sleeve. The surface of the C-shaped copper rail is inlaid with a graphite plate to improve lubricity and thermal conductivity.

[0016] Preferably, the thermally variable fixing assembly includes a thermally variable sleeve core, which includes an inverted T-shaped heat core, which is used to transfer the heat transferred by the parts during the welding process and fix the sliding sleeve frame through thermal deformation. The inverted T-shaped heat core is fixedly connected to the inside of the inverted T-shaped slide frame, and the top of the inverted T-shaped heat core is fixedly connected to a copper ring, and the copper ring is fixedly connected to the inside of the horizontal sleeve. The top and bottom of the inverted T-shaped heat core are both slidably connected to the inside of the C-shaped copper rail. The number of the thermally variable sleeve cores is two.

[0017] Preferably, the rotating column is rotatably connected to the inside of the copper ring, the back of the rotating column is fixedly connected to the servo motor, the right side of the rotating column is rotatably connected to the left surface of the inside of the horizontal sleeve, the number of rectangular blind holes on the right side of the rotating column is three, and they are symmetrically distributed about the central axis of the rotating column, and the rotating column is made of cast iron to reduce the interference of vibration on the welding process.

[0018] The top of the sliding clamp is fixedly connected to a limit baffle for assisting the horizontal limitation of the sliding clamp and improving the stability of the sliding clamp when the sliding clamp is clamped. The right side of the limit baffle and the top of the sliding clamp are fixedly connected to reinforcing ribs. The thermally variable fixing frame includes a copper bottom plate, the top of the copper bottom plate is fixedly connected to the bottom of the sliding clamp, and the sliding rod is slidably connected to the copper bottom plate. The top of the rectangular through hole of the rotating column is fixedly connected to a heat transfer pad for expanding the heat transfer area of the thermally variable fixing frame, the heat transfer pad is slidably connected to the sliding rod, and the bottom of the heat transfer pad is fixedly connected to the top of the sliding clamp by a spring, and the sliding rod is located on the left side of the limit baffle. The number of the rotating columns is two, and the number of the sliding clamp, the limit baffle, the thermally variable fixing frame, and the heat transfer pad are all six, each three forming a group, and the two groups of rotating columns are symmetrically distributed on both sides.

[0019] Preferably, the sensing component includes a sensor bracket, the left side of the sensor bracket is fixedly connected to the right side of the horizontal sleeve, a temperature probe is plugged into the top of the sensor bracket, which is used to detect the surface temperature of the raw material of the automotive shaft parts directly below it, and a laser rangefinder is fixedly connected to the bottom of the sensor bracket, the laser rangefinder is located to the right of the temperature probe, and the laser rangefinder is used to detect the distance from it to the surface of the raw material of the automotive shaft parts directly below it in real time. The temperature probe and the laser rangefinder are electrically connected to the electric control cabinet through wires, and are used to feed back the detected temperature and distance data to the electric control cabinet to assist the electric control cabinet in regulating the working state of the device. There are two sensing components, and the other one is located in the horizontal sleeve on the right.

[0020] The present invention provides an automobile parts welding device having the following beneficial effects:

[0021] 1. This automobile parts welding device, by setting up an elastic clamping mechanism and using a sliding clamping plate in conjunction with a spring, realizes self-adaptation to the size of the raw materials of automobile shaft parts. It uses a thermally variable fixing frame and a copper base plate to absorb heat and cause thermal deformation to enhance the holding force on the raw materials of the parts, thereby improving the stability and clamping accuracy of the fixed parts, thereby improving the welding accuracy and welding quality.

[0022] 2. This automobile parts welding device absorbs the vibration generated during the rotation process by cooperating with the sliding clamp and the rotating column, thereby reducing the impact of vibration on the welding accuracy of the parts. The rotating column is combined with the copper sleeve to improve the absorption and transmission effect of vibration, while facilitating the dissipation and transmission of excess heat, preventing excessive temperature from affecting the physical properties of the parts raw materials themselves, thereby maintaining the welding quality. The sliding sleeve is matched with the electric push rod to accurately adjust the position of the sliding sleeve, thereby improving the docking accuracy before welding and assisting in improving the welding quality.

[0023] 3. This automobile parts welding device, by providing a thermally variable fixing component and utilizing a C-shaped copper rail in conjunction with a thermally variable sleeve core, reduces frictional resistance during sliding, thereby reducing the impact of frictional resistance on the precision of butted parts before welding, thereby improving welding quality. At the same time, the thermally variable sleeve core is utilized to transfer heat to achieve thermal deformation, thereby increasing the contact area between the C-shaped copper rail, the thermally variable sleeve core, and the sliding sleeve frame, thereby reducing the impact of vibration on the stability of the sliding sleeve frame, improving the stability of the sliding sleeve frame during the welding process, and further improving the quality of welding.

[0024] 4. This automobile parts welding device, by setting up an induction component, cooperates with the servo motor, electric push rod, and electric control cabinet to achieve real-time detection of the surface temperature and vibration amplitude of the part raw material during the welding process, and can adjust the working status of the servo motor and electric push rod in real time according to the detection data, thereby assisting in improving the clamping accuracy, improving the welding quality and welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the front side of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure on the left side of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall internal structure of the top move of the present invention;

[0028] Figure 4 This is a schematic diagram of the overall structure of the sliding splint of the present invention;

[0029] Figure 5 This is a schematic diagram of the position structure of the sliding splint and the rotating column of the present invention;

[0030] Figure 6 This is a cross-sectional view of the internal structure of the transmission column of the present invention;

[0031] Figure 7 This is a schematic diagram of the positional relationship between the C-shaped copper rail and the bed base of the present invention;

[0032] Figure 8 Schematic diagram of the positional relationship between the thermally variable sleeve core and the C-shaped copper rail of the present invention.

[0033] In the figure: 1. Bed base; 2. Top cover; 3. Welding assembly; 31. Welding gun bracket; 32. Welding gun body; 4. Elastic clamping mechanism; 41. Sliding splint; 42. Limit baffle; 43. Thermal change fixing frame; 431. Copper bottom plate; 432. Slide rod; 44. Heat transfer pad; 45. Rotating column; 5. Sliding sleeve; 51. Horizontal sleeve; 52. Inverted T-shaped slide; 53. Motor bracket; 54. Push rod sleeve; 6. Electric push rod; 7. Electric control cabinet; 8. Induction assembly; 81. Sensor bracket; 82. Temperature probe; 83. Laser rangefinder; 9. Thermal change fixing assembly; 91. C-shaped copper rail; 92. Thermal change sleeve core; 921. Inverted T-shaped heat core; 922. Copper ring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0036] Example 1

[0037] See also Figure 1-2 The present invention provides a technical solution: an automobile parts welding device, including a bed base 1, which is the installation base of the entire device, a rectangular blind hole is opened on the top of the bed base 1, and rectangular through holes are opened on both sides of the bed base 1. The top of the bed base 1 is fixedly connected to a top cover 2, and the top of the inner wall of the top cover 2 is fixedly connected to a welding assembly 3. The welding assembly 3 includes a welding gun bracket 31, which is fixedly connected to the top of the inner wall of the top cover 2. The bottom of the welding gun bracket 31 is fixedly connected to a welding gun body 32. The welding gun body 32 is electrically connected to an electric control cabinet 7 through a wire, and is used to perform welding work on raw materials of automobile shaft parts;

[0038] A thermally variable fixing component 9 is fixedly connected to the top of the bed base 1. The thermally variable fixing component 9 includes a C-shaped copper rail 91, which is used to realize the sliding of the sliding sleeve 5. The top of the C-shaped copper rail 91 is slidably connected to the sliding sleeve 5. The sliding sleeve 5 is internally rotatably connected to an elastic clamping mechanism 4. The right side of the elastic clamping mechanism 4 is fixedly connected to an induction component 8. The front of the bed base 1 is fixedly connected to an electric control cabinet 7. Both sides of the rectangular blind hole of the bed base 1 are fixedly connected to electric push rods 6. The electric push rods 6 are electrically connected to the electric control cabinet 7 through wires.

[0039] When in use, before starting the device, the raw materials of automobile shaft parts to be welded are respectively fixed to the elastic clamping mechanisms 4 at both ends. After the raw materials of automobile shaft parts are firmly clamped in the elastic clamping mechanisms 4, the device is started by the electric control cabinet 7. After the electric control cabinet 7 is started, the electric push rod 6, the sliding sleeve 5, and the welding assembly 3 are controlled to start. After the electric push rod 6 is started, the position of the sliding sleeve 5 is adjusted under the regulation of the electric control cabinet 7 so that the automobile shaft parts at both ends are fitted and docked. Then the electric control cabinet 7 controls the welding assembly 3 to work, and the welding gun body 32 welds the fitting surfaces of the parts. During the welding process, the induction component 8 transmits the detection data back to the electric control cabinet 7 in real time. The electric control cabinet 7 adjusts the working status of the electric push rod 6, the welding assembly 3 and the servo motor in time according to the returned data. After welding is completed, the control device is closed through the electric control cabinet 7. After the electric control cabinet 7 is closed, the welding assembly 3, the sliding sleeve 5, and the electric push rod 6 stop working, and then the welded parts are taken out from the elastic clamping mechanism 4 to complete the welding.

[0040] Example 2

[0041] See also Figure 1-6 Based on the first embodiment, the present invention provides a technical solution:

[0042] The sliding sleeve 5 includes an inverted T-shaped slide 52, which is used to realize the sliding of the sliding sleeve 5 on the thermally variable fixed component 9. The left cross-section of the inverted T-shaped slide 52 is an inverted T-shape, and the interior of the inverted T-shaped slide 52 is a hollow structure. The inverted T-shaped slide 52 is made of alloy steel. The top, front and back of the inverted T-shaped slide 52 are all provided with rectangular through holes for accommodating the thermally variable sleeve core 92. The left side of the inverted T-shaped slide 52 is fixedly connected to a motor bracket 53, and the top of the motor bracket 53 is fixedly connected to a servo motor for driving the elastic clamping mechanism 4 to rotate. The servo motor is electrically connected to the electric control cabinet 7 through a wire for transmitting the speed and direction of rotation to the electric control cabinet 7. Parameters such as, auxiliary electric control cabinet 7 adjusts the welding process, the top of inverted T-shaped slide 52 is connected with a horizontal sleeve 51, the horizontal sleeve 51 is used to carry the rotating column 45, the horizontal sleeve 51 is made of alloy steel, the left side of the inverted T-shaped slide 52 is rotatably connected with a push rod sleeve 54, the left side of the push rod sleeve 54 is fixedly connected to the right side of the electric push rod 6, which is used to realize the electric push rod 6 pushing the sliding sleeve 5 for sliding adjustment, and at the same time converting part of the vibration in the welding process into a smaller amplitude repeated rotation. There are two sliding sleeves 5 and they are symmetrically distributed on the top of the C-shaped copper rail 91, which are used to simultaneously clamp the parts to be welded.

[0043] The sensing assembly 8 includes a sensor bracket 81, the left side of the sensor bracket 81 is fixedly connected to the right side of the horizontal sleeve 51, and a temperature probe 82 is inserted into the top of the sensor bracket 81 for detecting the surface temperature of the raw material of the automobile shaft parts directly below it. A laser rangefinder 83 is fixedly connected to the bottom of the sensor bracket 81, and the laser rangefinder 83 is located to the right of the temperature probe 82. The laser rangefinder 83 is used to detect the distance from it to the surface of the raw material of the automobile shaft parts directly below it in real time. The temperature probe 82 and the laser rangefinder 83 are both electrically connected to the electric control cabinet 7 through wires, and are used to feed back the detected temperature and distance data to the electric control cabinet 7 to assist the electric control cabinet 7 in regulating the working state of the device. There are two sensing assemblies 8, and the other sensing assembly 8 is located on the right side of the horizontal sleeve 51.

[0044] When in use, after fixing the part raw material to the elastic clamping mechanism 4 and starting the device, the electric push rod 6 is controlled to start by the electric control cabinet 7. After the electric push rod 6 is started, the push rod pushes the push rod sleeve 54 to move to the center position, and the push rod sleeve 54 drives the inverted T-shaped slide 52 to move, and the inverted T-shaped slide 52 drives the horizontal sleeve 51 to move, and the horizontal sleeve 51 drives the elastic clamping mechanism 4 to move, and then drives the part raw material to move through the elastic clamping mechanism 4. When the welding surfaces of the part raw materials at both ends are in contact, the push rod of the electric push rod 6 cannot move forward, which causes the motor current of the electric push rod 6 to increase. When the electric control cabinet 7 detects the increase in the motor current of the electric push rod 6, it determines that the welding surfaces of the part raw materials at both ends have been in contact, and then closes the electric push rod 6 to complete the welding surface butt connection process of the part raw materials at both ends;

[0045] After the docking is completed, the device starts the welding assembly 3 through the electric control cabinet 7, and the welding assembly 3 starts to weld the parts. At the same time, the electric control cabinet 7 controls the servo motor on the top of the motor bracket 53 to start working. The servo motor on the top of the motor bracket 53 drives the part raw material to rotate, and cooperates with the welding assembly 3 to weld the contact surface. During this process, the servo motor on the top of the motor bracket 53 feeds back the speed and direction of rotation to the electric control cabinet 7 in real time. The electric control cabinet 7 adjusts the speed of the servo motors at both ends in real time according to the data fed back by the servo motor to ensure that the two part raw materials do not rotate relative to each other, thereby affecting the welding quality and welding accuracy.

[0046] At the same time, the temperature probe 82 and the laser rangefinder 83 provide real-time feedback of the temperature data and distance data near the welding surface. The electric control cabinet 7 judges the dimensional data changes caused by the thermal deformation of the part material and the vibration amplitude of the part material during the welding operation based on the changes in the temperature data and distance data, and then adjusts the working status of the welding assembly 3, the electric push rod 6 and the servo motor to ensure the welding accuracy and quality.

[0047] Example 3

[0048] See also Figure 1-8 Based on the first and second embodiments, the present invention provides a technical solution: the elastic clamping mechanism 4 includes:

[0049] The sliding clamping plate 41 is slidably connected to the rectangular blind hole of the rotating column 45 to clamp the automobile shaft parts;

[0050] The limit baffle 42 is fixedly connected to the top of the sliding clamping plate 41. The right side of the limit baffle 42 and the top of the sliding clamping plate 41 are fixedly connected with reinforcing ribs to assist the horizontal limitation of the sliding clamping plate 41 and improve the stability of the sliding clamping plate 41 when clamping;

[0051] The thermally variable fixing frame 43 is fixedly connected to the bottom of the sliding clamping plate 41 and is used to increase the contact area of the elastic clamping mechanism 4 for fixing the shaft-like parts, thereby increasing the stability of the elastic clamping mechanism 4 in fixing the shaft-like parts. The thermally variable fixing frame 43 includes a copper base plate 431, the top of the copper base plate 431 is fixedly connected to the bottom of the sliding clamping plate 41, and a sliding rod 432 is slidably connected to the top of the sliding clamping plate 41. The sliding rod 432 is slidably connected to the copper base plate 431 and is located on the left side of the limit baffle 42;

[0052] Heat transfer pad 44 is fixedly connected to the top of the rectangular through hole of the rotating column 45, which is used to expand the heat transfer area of the thermal change fixing frame 43. The heat transfer pad 44 is slidably connected to the sliding rod 432, and the bottom of the heat transfer pad 44 is fixedly connected to the top of the sliding clamping plate 41 through a spring;

[0053] The rotating column 45 is rotatably connected to the interior of the sliding sleeve 5. A rectangular blind hole is provided on the right side of the rotating column 45, which serves as the mounting base for the entire elastic clamping mechanism 4 and is used to reduce vibration interference with the welding process. The rotating column 45 is rotatably connected to the interior of the copper collar 922. The right side of the rotating column 45 is rotatably connected to the left surface of the interior of the horizontal sleeve 51. The back of the rotating column 45 is fixedly connected to the servo motor. There are three rectangular blind holes on the right side of the rotating column 45, and they are symmetrically distributed about the central axis of the rotating column 45. The rotating column 45 is made of cast iron, and there are two rotating columns 45.

[0054] The number of sliding clamping plates 41, limiting baffles 42, thermally variable fixing frames 43, and heat transfer pads 44 are all six, with three forming a group. Two groups of rotating columns 45 are symmetrically distributed on both sides. The elastic clamping mechanism 4 realizes adaptive adjustment to the size of the raw materials of automobile shaft parts, strengthens the holding force of the raw materials, improves the stability and clamping accuracy of the fixed parts, and thus improves the welding accuracy and quality.

[0055] The left side cross section of the C-shaped copper rail 91 is C-shaped. There are two C-shaped copper rails 91, which are symmetrically distributed on the top of the bed base 1. The C-shaped copper rail 91 is used to achieve stable sliding of the sliding sleeve 5 and use heat absorption deformation to assist in stabilizing the sliding sleeve 5. The surface of the C-shaped copper rail 91 is inlaid with a graphite plate to improve lubricity and thermal conductivity. The thermally variable fixing component 9 includes a thermally variable sleeve core 92, which is used to transfer the heat transferred by the parts during the welding process and fix the sliding sleeve 5 through thermal deformation. The thermally variable sleeve core 92 includes an inverted T-shaped heat core 921, which is fixedly connected to the inside of the inverted T-shaped slide 52. The inverted T-shaped heat core A copper ring 922 is fixedly connected to the top of 921, and the copper ring 922 is fixedly connected to the inside of the horizontal sleeve 51, which is conducive to dissipating and transferring excess heat and preventing excessive temperature from affecting the physical properties of the part material itself, thereby maintaining the welding quality. The top and bottom of the inverted T-shaped hot core 921 are both slidably connected to the inside of the C-shaped copper rail 91. There are two thermally variable sleeve cores 92, which increase the contact area between the C-shaped copper rail 91 and the thermally variable sleeve core 92 and the sliding sleeve frame 5, thereby reducing the impact of vibration on the stability of the sliding sleeve frame 5, improving the stability of the sliding sleeve frame 5 during the welding process, and further improving the welding quality.

[0056] When in use, before starting the device, the shaft part material to be welded is fed into the elastic clamping mechanism 4 from the right side of the elastic clamping mechanism 4. When the left side of the material contacts the bottom of the copper bottom plate 431, the copper bottom plate 431 is pushed by the surface of the material, and moves along the radial direction of the rotating column 45 and the slide rod 432 inside the rectangular blind hole of the rotating column 45, while squeezing the spring until the part material is completely clamped by the elastic clamping mechanism 4. After the clamping is firm, the device is started through the electric control cabinet 7, and the part material is welded through the welding assembly 3. During the welding process, the welding surface will gradually heat up as the welding process proceeds, and the heat will gradually transfer from the welding surface to the two ends of the part, and then the heat will be transferred to the slide rod 4 through the copper bottom plate 431. 32, and then transferred to the heat transfer pad 44 by the sliding rod 432, and then transferred from the heat transfer pad 44 to the rotating column 45, and then transferred from the rotating column 45 to the copper ring 922, and then the heat is transferred from the copper ring 922 to the inverted T-shaped heat core 921, and finally transferred to the C-shaped copper rail 91 through the inverted T-shaped heat core 921. The excess heat is dissipated into the nearby air through the surface of the C-shaped copper rail 91, thereby preventing excessive heat from affecting the physical properties of the raw material parts and thus reducing the welding performance. During the sliding process, since the surface of the C-shaped copper rail 91 is inlaid with a graphite plate, the sliding sleeve 5 will slide more smoothly during the sliding process, which helps to improve the adjustment accuracy of the electric push rod 6, thereby improving the welding accuracy and welding quality of the device;

[0057] In the process of dissipating heat, the thermally variable fixing component 9 continuously absorbs heat from the welding of the parts raw materials while dissipating heat. After absorbing heat, the thermally variable fixing frame 43, the C-shaped copper rail 91, and the thermally variable sleeve core 92 are thermally deformed and expand outward. After the outward expansion, the contact area between the copper bottom plate 431 and the surface of the parts is increased, and the pressure between the copper bottom plate 431 and the surface of the parts is increased, thereby increasing the clamping stability. At the same time, the expansion of the surface of the sliding rod 432 increases the contact area with the sliding clamping plate 41 and the copper bottom plate 431. The sliding clamping plate 41 is prevented from loosening during the clamping process, which in turn causes a decrease in stability and a decrease in welding quality. At the same time, the inverted T-shaped hot core 921 and the C-shaped copper rail 91 will also expand outward after absorbing heat, thereby increasing the contact area and pressure between the C-shaped copper rail 91 and the inverted T-shaped hot core 921, and between the C-shaped copper rail 91 and the inverted T-shaped slide 52, thereby improving the clamping stability of the elastic clamping mechanism 4 and the sliding sleeve 5, and preventing the clamping from being unstable due to long-term use, thereby reducing the welding accuracy and welding quality.

[0058] During the welding process, the vibration generated by the rotation of the raw material is transmitted to the slide rod 432 through the copper bottom plate 431, and then transmitted to the heat transfer pad 44 by the slide rod 432, and then transmitted from the heat transfer pad 44 to the rotating column 45, and then transmitted to the copper ring 922 by the rotating column 45, and then the heat is transferred from the copper ring 922 to the inverted T-shaped heat core 921, and finally transmitted to the C-shaped copper rail 91 through the inverted T-shaped heat core 921, and then transmitted to the bed base 1 by the C-shaped copper rail 91, and finally the vibration is transmitted to the ground surface, thereby offsetting the vibration generated by the rotation of the part raw material and reducing the adverse effects of vibration on welding accuracy.

[0059] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automobile parts welding device, comprising a bed (1), characterized in that: The top of the bed base (1) is fixedly connected to a top cover (2), the top of the inner wall of the top cover (2) is fixedly connected to a welding assembly (3), the top of the bed base (1) is fixedly connected to a thermally variable fixing assembly (9), the thermally variable fixing assembly (9) comprises a C-shaped copper rail (91), the left side cross section of the C-shaped copper rail (91) is C-shaped, the surface of the C-shaped copper rail (91) is inlaid with a graphite plate for improving lubricity and thermal conductivity, the number of the C-shaped copper rails (91) is two, and they are symmetrically distributed on the top of the bed base (1), the thermally variable fixing assembly (9) comprises a thermally variable sleeve core (92), which is used to transfer heat transferred by the parts during welding and fix the sliding sleeve (5) in the form of thermal deformation, the thermally variable sleeve core (92) comprises an inverted T-shaped heat core (921), the inverted T-shaped heat core (921) is fixedly connected to the inside of the inverted T-shaped slide (52), the top of the C-shaped copper rail (91) is slidably connected to a sliding sleeve (5), the sliding sleeve (5) includes an inverted T-shaped slide (52), which is used to realize the sliding of the sliding sleeve (5) on the thermally variable fixed component (9), the left side cross-section of the inverted T-shaped slide (52) is an inverted T-shape, the inside of the inverted T-shaped slide (52) is a hollow structure, the material of the inverted T-shaped slide (52) is alloy steel, the inside of the sliding sleeve (5) is rotatably connected to an elastic clamping mechanism (4), the right side of the elastic clamping mechanism (4) is fixedly connected to an induction component (8), and the front of the bed base (1) is fixedly connected to an electric control cabinet (7); The elastic clamping mechanism (4) comprises: A rotating column (45), the rotating column (45) is rotatably connected to the inside of the sliding sleeve (5), and a rectangular blind hole is opened on the right side of the rotating column (45), which serves as the installation base of the entire elastic clamping mechanism (4); A sliding clamping plate (41), wherein the sliding clamping plate (41) is slidably connected to the inside of the rectangular blind hole of the rotating column (45) and is used to clamp automobile shaft parts; A thermally variable fixing frame (43) is fixedly connected to the bottom of the sliding clamp (41) and is used to increase the contact area of the elastic clamping mechanism (4) for fixing the shaft-like parts, thereby increasing the stability of the elastic clamping mechanism (4) for fixing the shaft-like parts. The thermally variable fixing frame (43) includes a copper base plate (431), the top of the copper base plate (431) is fixedly connected to the bottom of the sliding clamp (41), and the top of the sliding clamp (41) is slidably connected to a sliding rod (432), and the sliding rod (432) is slidably connected to the copper base plate (431).

2. The automobile parts welding device according to claim 1, characterized in that: A rectangular blind hole is provided on the top of the bed base (1), and rectangular through holes are provided on both sides of the bed base (1). Electric push rods (6) are fixedly connected to both sides of the rectangular blind hole of the bed base (1), and the electric push rods (6) are electrically connected to the electric control cabinet (7) through a wire.

3. The automobile parts welding device according to claim 1, characterized in that: The welding assembly (3) includes a welding gun bracket (31), the welding gun bracket (31) is fixedly connected to the top of the inner wall of the top cover (2), and the bottom of the welding gun bracket (31) is fixedly connected to a welding gun body (32), and the welding gun body (32) is electrically connected to the electric control cabinet (7) through a wire, and is used to perform welding work on automobile shaft parts.

4. The automobile parts welding device according to claim 2, characterized in that: Rectangular through holes are provided on the top, front and back of the inverted T-shaped slide (52). A motor bracket (53) is fixedly connected to the left side of the inverted T-shaped slide (52). A servo motor is fixedly connected to the top of the motor bracket (53) for driving the elastic clamping mechanism (4) to rotate. A transverse sleeve (51) is connected to the top of the inverted T-shaped slide (52). The transverse sleeve (51) is used to support the rotating column (45). The transverse sleeve (51) is made of alloy steel.

5. The automobile parts welding device according to claim 4, characterized in that: The left side of the inverted T-shaped slide (52) is rotatably connected to a push rod sleeve (54), and the left side of the push rod sleeve (54) is fixedly connected to the right side of the electric push rod (6), so as to enable the electric push rod (6) to push the sliding sleeve (5) for sliding adjustment, and at the same time convert part of the vibration during the welding process into repeated rotation of a smaller amplitude. The number of the sliding sleeves (5) is two and they are symmetrically distributed on the top of the C-shaped copper rail (91).

6. The automobile parts welding device according to claim 4, characterized in that: The C-shaped copper rail (91) is used to achieve stable sliding of the sliding sleeve (5), and utilizes heat absorption deformation to assist in stabilizing the sliding sleeve (5).

7. The automobile parts welding device according to claim 6, characterized in that: The top of the inverted T-shaped heat core (921) is fixedly connected to a copper ring (922), and the copper ring (922) is fixedly connected to the inside of the horizontal sleeve (51). The top and bottom of the inverted T-shaped heat core (921) are both slidably connected to the inside of the C-shaped copper rail (91). The number of the thermally variable sleeve cores (92) is two.

8. The automobile parts welding device according to claim 7, characterized in that: The rotating column (45) is rotatably connected to the inside of the copper ring (922), and the back of the rotating column (45) is fixedly connected to the servo motor. The number of rectangular blind holes on the right side of the rotating column (45) is three, and they are symmetrically distributed about the central axis of the rotating column (45). The right side of the rotating column (45) is rotatably connected to the left surface of the inside of the horizontal sleeve (51). The rotating column (45) is made of cast iron and is used to reduce the interference of vibration on the welding process.

9. The automobile parts welding device according to claim 8, characterized in that: The top of the sliding splint (41) is fixedly connected to a limiting baffle (42) for assisting the horizontal limiting of the sliding splint (41) and improving the stability of the sliding splint (41) when clamping. The right side of the limiting baffle (42) and the top of the sliding splint (41) are fixedly connected with reinforcing ribs. The thermally variable fixing frame (43) includes a copper bottom plate (431). The top of the copper bottom plate (431) is fixedly connected to the bottom of the sliding splint (41). The top of the rectangular through hole of the rotating column (45) is fixedly connected to a heat transfer pad (44) for expanding The heat transfer area of the thermally variable fixed frame (43) is large, the heat transfer pad (44) is slidably connected to the slide rod (432), the bottom of the heat transfer pad (44) is fixedly connected to the top of the sliding clamp (41) through a spring, the slide rod (432) is located on the left side of the limit baffle (42), the number of the rotating columns (45) is two, the number of the sliding clamp (41), the limit baffle (42), the thermally variable fixed frame (43), and the heat transfer pad (44) are all six, each three forming a group, and the two groups are symmetrically distributed on the rotating columns (45) on both sides.

10. The automobile parts welding device according to claim 4, characterized in that: The sensing component (8) includes a sensor bracket (81), the left side of the sensor bracket (81) is fixedly connected to the right side of the horizontal sleeve (51), the top of the sensor bracket (81) is plugged with a temperature probe (82) for detecting the surface temperature of the raw material of the automobile shaft part directly below it, and the bottom of the sensor bracket (81) is fixedly connected with a laser rangefinder (83), the laser rangefinder (83) is located on the right side of the temperature probe (82), and the laser rangefinder (83) is used to detect the distance from it to the surface of the raw material of the automobile shaft part directly below it in real time. The temperature probe (82) and the laser rangefinder (83) are both electrically connected to the electric control cabinet (7) through wires, and are used to feed back the detected temperature and distance data to the electric control cabinet (7), so as to assist the electric control cabinet (7) in regulating the working state of the device. The number of the sensing components (8) is two, and the other one is located on the right side of the horizontal sleeve (51).

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