A welding and forming processing equipment for cooling fan blades

Abstract

The present invention relates to the field of cold air machine blade processing, specifically a cold air machine blade welding and forming processing equipment, including a support table and a multi-dimensional welding robot installed on the support table, a blade assembly device is installed on the top of the support table, and the blade assembly device includes an assembly table fixed on the support table, a sleeve fixing mechanism for fixing the sleeve is installed at the center of the top of the assembly table, and a blade clamping mechanism for clamping the blade is arranged around the sleeve fixing mechanism. The present invention fixes the sleeve by the sleeve fixing mechanism, thereby improving the stability of the sleeve during welding, clamps the blade by the blade clamping mechanism, and then drives the blade to move inward with the clamping block and presses the blade against the outside of the sleeve, so that the multi-dimensional welding robot can directly weld the blade and the sleeve, and no spot welding is required before welding, thereby improving the efficiency of blade welding.

Description

Technical Field

[0001] The invention relates to the technical field of cooling fan blade processing, in particular to cooling fan blade welding and forming processing equipment. Background Art

[0002] An air cooler is a common industrial equipment, which consists of components such as a compressor, a condenser, an expansion valve and an evaporator. It uses the principle of refrigeration cycle to absorb and discharge heat from the air, thereby generating a large amount of cold air. It is usually widely used in industrial production, building air conditioning, HVAC systems, ventilation and other fields. The fan blades of the air cooler are an important component of the air cooler, which are used to accelerate the airflow and generate air flow.

[0003] The fan blades of the air cooler are mainly welded together by the blades and the sleeves. Before welding the existing air cooler blades, it is necessary to first use spot welding to weld the center and both ends of the connection seam between the blades and the sleeves together to fix the blades to the sleeves, and then use a welding robot to weld along the gap between the blades and the sleeves to completely weld the blades and the sleeves together. This processing method has the following shortcomings: 1. Before the welding robot performs welding, workers are required to dock the blades and the sleeves and fix the blades to the sleeves by spot welding, and then the welding robot formally welds the blades and the sleeves. The process of spot welding the blades and the sleeves together takes a long time, which reduces the efficiency of the air cooler blade welding process; 2. Since the blades are usually connected to the sleeves at an angle, workers have to align the blades and the sleeves when welding. When the sleeve is spot-welded, the inclination angle of the blade is difficult to control, which can easily cause deviations in the inclination angle of the welded blade, affecting the quality of blade welding, and directly affecting the dynamic balance and static balance of the blade. Poor welding quality may cause the blade to vibrate and become unbalanced during operation, affecting the working efficiency and stability of the fan; 3. Since the outer surface of the sleeve is an arc-shaped surface, the contact surface between the blade and the sleeve is also an arc-shaped surface, and the blade and the sleeve are prone to loose docking, resulting in a gap between the blade and the sleeve after spot welding, affecting the quality of subsequent welding. Poor welding quality may cause stress concentration and fatigue cracking of the blade during operation, affecting the service life and durability of the blade. Poor welding quality may cause the blade to fall off or fail, increasing safety hazards during equipment operation. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a cold air blower blade welding and forming processing equipment, including a support table and a multi-dimensional welding robot installed on the support table, a blade assembly device is installed on the top of the support table, the blade assembly device includes an assembly table fixed on the support table, a sleeve fixing mechanism for fixing the sleeve is installed at the center of the top of the assembly table, blade clamping mechanisms for clamping the blades are arranged around the sleeve fixing mechanism, and a driving mechanism for driving the sleeve fixing mechanism and the blade clamping mechanism is arranged inside the assembly table.

[0005] The blade clamping mechanism comprises a lower clamping assembly mounted on the top of the assembly table, an upper clamping assembly is arranged above the lower clamping assembly, and a transmission assembly for driving the upper clamping assembly to move downward is arranged at one end of the upper clamping assembly away from the sleeve fixing mechanism.

[0006] The upper clamping assembly includes a slide rail, a guide slider is slidably installed inside the slide rail, a return spring is connected to the outer side of the guide slider, one end of the return spring away from the guide slider is fixed inside the slide rail, and a clamping block is connected to the bottom of the guide slider.

[0007] The transmission assembly includes a guide column fixed inside the slide rail, an external movable sleeve of the guide column is provided with an extrusion block, a compression spring is provided at the bottom of the extrusion block, a triangular oblique block is provided below the extrusion block, the triangular oblique block is fixedly connected to the guide slider, a guide bar is fixedly connected to the outer side of the guide column, the guide bar is vertically slidably installed inside the assembly table, and the guide bar is transmission-connected to the driving mechanism.

[0008] In one possible implementation, the sleeve fixing mechanism includes a shell fixed to the top of the assembly table, a T-shaped slider is slidably installed on the top of the shell, the T-shaped slider is symmetrically distributed about the center of the shell, a fixing claw is fixedly installed on the top of the T-shaped slider, and the inner movable sleeve of the shell is provided with a spiral disk, the spiral disk is meshed with the bottom of the T-shaped slider through the spiral pattern on the top, and the bottom of the spiral disk is connected to the connecting shaft through a fixedly connected friction torque limiter.

[0009] In one possible implementation, the drive mechanism includes a drive motor located inside the assembly table, the drive motor is fixed on the top of the support table, the top of the drive motor output shaft is fixedly connected to a gear plate, the top of the gear plate is coaxially fixedly connected to the bottom of the connecting shaft, the edge of the gear plate is transmission-connected to a transmission rod, the transmission rod is movably mounted inside the assembly table, and the end of the transmission rod away from the gear plate is fixedly connected to a transmission gear.

[0010] In one possible implementation, the lower clamping assembly and the upper clamping assembly have the same structure and are symmetrically distributed on the upper and lower sides of the blade, the side of the clamping block close to the blade is an arcuate surface and a groove for limiting the blade is provided on the arcuate surface, wherein the top surface of the clamping block in the lower clamping assembly matches the bottom surface of the blade, and the bottom surface of the clamping block in the upper clamping assembly matches the top surface of the blade.

[0011] In one possible implementation, the opposing surfaces of the extrusion block and the triangular inclined block are both sloped surfaces and fit together. The sloped surface of the triangular inclined block tilts from bottom to top toward the direction close to the guide slider, and the triangular inclined block is connected to the guide slider through a rod.

[0012] In a possible implementation, the bottom end of the guide bar extends to the interior of the assembly table, a rectangular groove is provided inside the guide bar, a rack is fixedly mounted on the side wall of the rectangular groove, and the rack is meshed with a transmission gear.

[0013] In a possible implementation, the cross-section of the guide slider is T-shaped, and a ball bearing is disposed between the guide slider and the slide rail.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention fixes the shaft sleeve through a shaft sleeve fixing mechanism, thereby improving the stability of the shaft sleeve during welding, and clamps the blade through a blade clamping mechanism, and then the clamping blocks in the clamping mechanism drive the blade to move inward and press the blade against the outside of the shaft sleeve, making it convenient for a multi-dimensional welding robot to directly weld the blade and the shaft sleeve, without the need for spot welding before welding, thereby improving the efficiency of blade welding.

[0015] 2. The present invention uses a single driving source to drive the motor to control the sleeve fixing mechanism and the blade clamping mechanism to fix the sleeve and the blade respectively, thereby ensuring the stability of the sleeve and the blade during the installation process. After the lower clamping assembly and the upper clamping assembly complete the clamping of the blade, the transmission assembly that continues to move downward will drive the extrusion block to extrude the triangular bevel block, so that the clamping block can drive the blade to move inward, tightly fitting the blade and the sleeve together, ensuring the firmness of the welding between the blade and the sleeve, and improving the quality of the blade welding.

[0016] 3. The present invention symmetrically arranges a plurality of blade clamping mechanisms around the shaft sleeve fixing mechanism, which can press and fit a plurality of blades onto the shaft sleeve at the same time, and the blade clamping mechanism can ensure that each blade is installed on the shaft sleeve with the same inclination angle and spacing, thereby avoiding deviation in the inclination angle of the welded blades and uneven distribution of the blades, reducing the adverse effects on the dynamic balance and static balance of the blades, and further improving the quality of blade welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the blade assembly device of the present invention.

[0019] Figure 3 It is a schematic diagram of the blade assembly device of the present invention when assembling fan blades.

[0020] Figure 4 It is a front cross-sectional view of the blade assembly device of the present invention.

[0021] Figure 5 It is a cross-sectional view of the shaft sleeve fixing mechanism of the present invention.

[0022] Figure 6 It is a cross-sectional view of the upper clamping assembly of the present invention.

[0023] Figure 7 It is a cross-sectional view of the lower clamping assembly and the upper clamping assembly of the present invention.

[0024] In the figure: 1. support table; 2. blade assembly device; 21. assembly table; 22. sleeve fixing mechanism; 221. shell; 222. T-type slider; 223. fixing claw; 224. spiral disk; 225. friction torque limiter; 226. connecting shaft; 23. blade clamping mechanism; 231. lower clamping assembly; 232. upper clamping assembly; 2321. slide rail; 2322. guide slider; 2323. return spring; 2324. clamping block; 233. transmission assembly; 2331. guide column; 2332. extrusion block; 2333. compression spring; 2334. triangular inclined block; 2335. guide strip; 24. driving mechanism; 241. driving motor; 242. gear plate; 243. transmission rod; 244. transmission gear; 3. multi-dimensional welding robot; 4. fan blade. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4A cooling fan blade welding and forming processing equipment includes a support platform 1 and a multi-dimensional welding robot 3 installed on the support platform 1. A blade assembly device 2 is installed on the top of the support platform 1. The blade assembly device 2 includes an assembly platform 21 fixed on the support platform 1. A sleeve fixing mechanism 22 for fixing the sleeve is installed at the center of the top of the assembly platform 21. A blade clamping mechanism 23 for clamping the blade is arranged around the sleeve fixing mechanism 22. A driving mechanism 24 for driving the sleeve fixing mechanism 22 and the blade clamping mechanism 23 to work is arranged inside the assembly platform 21.

[0027] See also Figure 1 , Figure 2 and Figure 4 The blade clamping mechanism 23 includes a lower clamping component 231 installed on the top of the assembly table 21, an upper clamping component 232 is arranged above the lower clamping component 231, and a transmission component 233 for driving the upper clamping component 232 to move downward is arranged at one end of the upper clamping component 232 away from the sleeve fixing mechanism 22. The upper clamping component 232 is driven to move downward by the transmission component 233, so that the upper clamping component 232 and the lower clamping component 231 clamp and fix the blade, thereby improving the stability of the blade during welding.

[0028] See also Figure 4 , Figure 6 and Figure 7 The upper clamping assembly 232 includes a slide rail 2321, a guide slider 2322 is slidably installed inside the slide rail 2321, and the cross section of the guide slider 2322 is a T-shaped structure. A ball bearing is arranged between the guide slider 2322 and the slide rail 2321. The arrangement of the ball bearing can reduce the friction between the guide slider 2322 and the slide rail 2321, so that the guide slider 2322 can move inside the slide rail 2321. A return spring 2323 is connected to the outer side of the guide slider 2322. The return spring 2323 is far away One end of the guide slider 2322 is fixed inside the slide rail 2321. The guide slider 2322 is pulled outward by the reset spring 2323 to automatically reset the guide slider 2322. The bottom of the guide slider 2322 is connected to a clamping block 2324. After the upper clamping assembly 232 moves downward to clamp the blade together with the lower clamping assembly 231, the guide slider 2322 can also slide inside the slide rail 2321 to move the fixed blade to fit together with the surface of the sleeve.

[0029] See also Figure 3 , Figure 4 and Figure 7The lower clamping assembly 231 and the upper clamping assembly 232 have the same structure and are symmetrically distributed on the upper and lower sides of the blade. The side of the clamping block 2324 close to the blade is an arc-shaped surface and a groove for limiting the blade is provided on the arc-shaped surface, wherein the top surface of the clamping block 2324 in the lower clamping assembly 231 matches the bottom surface of the blade, and the bottom surface of the clamping block 2324 in the upper clamping assembly 232 matches the top surface of the blade. Setting the side of the clamping block 2324 close to the blade as an arc-shaped surface can make the clamping block 2324 better fit together with the blade. The design of the groove facilitates rapid positioning of the blade, improves the stability of the clamping, and at the same time enables the blade to maintain a specific inclination angle to avoid deviation in the inclination angle when the blade is welded to the sleeve.

[0030] See also Figure 4 and Figure 6 The transmission assembly 233 includes a guide column 2331 fixed inside the slide rail 2321, and the guide column 2331 is movably sleeved with an extrusion block 2332 on the outside. A compression spring 2333 is provided at the bottom of the extrusion block 2332. The compression spring 2333 is movably sleeved on the outside of the guide column 2331. The compression spring 2333 gives an upward elastic force to the extrusion block 2332. Before the clamping block 2324 presses the blade, the extrusion block 2332 contacts the upper part of the slide rail 2321, and the extrusion block 2332 will not squeeze the triangular oblique block 2334 downward. A triangular oblique block 2334 is provided below the extrusion block 2332, and the triangular oblique block 2334 is fixedly connected to the guide slider 2322. A guide bar 2335 is fixedly connected to the outer side of the guide column 2331, and the guide bar 2335 is vertically slidably installed inside the assembly table 21. The guide bar 2335 is connected to the driving mechanism 24 in transmission. When the guide bar 2335 moves downward, the guide bar 2335 will drive the guide column 2331 to move downward through the transmission of the extrusion block 2332 and the compression spring 2333. When the clamping block 2324 presses the blade, the guide bar 2335 continues to move downward, which will cause the extrusion block 2332 to compress the compression spring 2333, so that the extrusion block 2332 squeezes the triangular bevel block 2334 downward, thereby causing the triangular bevel block 2334 to push the guide slider 2322 to drive the blade to slide inward.

[0031] See also Figure 4 and Figure 6The opposite surfaces of the extrusion block 2332 and the triangular inclined block 2334 are both inclined surfaces and fit together. The inclined surface of the triangular inclined block 2334 is inclined from bottom to top toward the direction close to the guide slider 2322. The triangular inclined block 2334 is connected to the guide slider 2322 through a rod. During the downward movement of the extrusion block 2332, the extrusion block 2332 will generate an extrusion force perpendicular to the inclined surface of the triangular inclined block 2334. The horizontal component of the extrusion force will push the triangular inclined block 2334 to slide inward, and the bottom end of the guide bar 2335 extends to the interior of the assembly table 21. A rectangular groove is provided inside the guide bar 2335, and a rack is fixedly installed on the side wall of the rectangular groove. The rack is meshed with the transmission gear 244, and the guide bar 2335 is driven to move downward by the rotation of the transmission gear 244, and then the guide bar 2335 drives the upper clamping assembly 232 to move downward, so that the upper clamping assembly 232 and the lower clamping assembly 231 can clamp the blade together.

[0032] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 The sleeve fixing mechanism 22 includes a shell 221 fixed on the top of the assembly table 21, a T-shaped slider 222 is slidably installed on the top of the shell 221, and the T-shaped slider 222 is symmetrically distributed about the center of the shell 221. A fixing claw 223 is fixedly installed on the top of the T-shaped slider 222. The inner movable sleeve of the shell 221 is provided with a spiral disk 224, and the spiral disk 224 is meshed with the bottom of the T-shaped slider 222 through the spiral pattern on the top. The bottom of the spiral disk 224 is connected to the connecting shaft 226 through a fixedly connected friction torque limiter 225. Then, the driving mechanism 24 drives the spiral disk 224 to rotate through the connecting shaft 226 and the friction torque limiter 225, and the spiral disk 224 drives the T-shaped slider 222 and the fixing claw 223 to move outward and support the shaft sleeve, thereby fixing the shaft sleeve. When the fixing claw 223 abuts against the inner wall of the shaft sleeve and cannot continue to move outward, the friction torque limiter 225 will slide due to the excessive torque. At this time, the connecting shaft 226 will rotate relative to the spiral disk 224, thereby preventing the shaft sleeve fixing mechanism 22 from being damaged due to excessive torque.

[0033] See also Figure 4The driving mechanism 24 includes a driving motor 241 located inside the assembly table 21. The driving motor 241 is fixed on the top of the support table 1. The top of the output shaft of the driving motor 241 is fixedly connected with a gear plate 242. The top of the gear plate 242 is coaxially fixedly connected with the bottom of the connecting shaft 226. The edge of the gear plate 242 is transmission-connected with a transmission rod 243. The transmission rod 243 is movably sleeved inside the assembly table 21. The end of the transmission rod 243 away from the gear plate 242 is fixedly connected with a transmission gear 244. The driving motor 241 drives the gear plate 242 to rotate, and then the gear plate 242 drives the connecting shaft 226 to rotate, thereby driving the sleeve fixing mechanism 22. At the same time, the gear plate 242 drives the transmission rod 243 to rotate, so that the transmission rod 243 drives the transmission gear 244 to rotate, and the transmission gear 244 drives the guide bar 2335 to move up and down, thereby driving the upper clamping component 232.

[0034] When in use, the sleeve is placed on the housing 221, the fixing claws 223 are located inside the sleeve, and then the blade is placed on the clamping block 2324 below so that the welding edge of the blade is aligned with the sleeve.

[0035] Start the drive motor 241, and use the drive motor 241 to drive the gear plate 242 to rotate, which drives the spiral plate 224 to rotate after being transmitted by the connecting shaft 226 and the friction torque limiter 225, and drives the T-shaped slider 222 to move outward, so that the fixing claw 223 clamps it from the inside of the sleeve.

[0036] At the same time, the gear plate 242 also drives the guide bar 2335 to move downward through the transmission rod 243 and the transmission gear 244, and uses the guide bar 2335 to drive the extrusion block 2332 to move downward. After the transmission of the compression spring 2333, it drives the slide rail 2321 to move downward, so that the upper clamping block 2324 is pressed tightly on the blade to fix the blade.

[0037] Then the guide bar 2335 drives the extrusion block 2332 to continue to move downward. At this time, the compression spring 2333 will be compressed under the pressure of the extrusion block 2332. At the same time, the extrusion block 2332 will squeeze the triangular bevel block 2334, causing the triangular bevel block 2334 to slide inward. The triangular bevel block 2334 is used to drive the guide slider 2322 toward the sleeve fixing mechanism 22, so that the blade is tightly attached to the surface of the sleeve.

[0038] Then, the driving motor 241 is turned off, and the multi-dimensional welding robot 3 is controlled to weld the connection between the blade and the sleeve.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling fan blade welding and forming processing device, comprising a support platform (1) and a multi-dimensional welding robot (3) mounted on the support platform (1), Features: A blade assembly device (2) is installed on the top of the support platform (1), and the blade assembly device (2) comprises an assembly platform (21) fixed on the support platform (1); a sleeve fixing mechanism (22) for fixing the sleeve is installed at the center of the top of the assembly platform (21); blade clamping mechanisms (23) for clamping the blades are arranged around the sleeve fixing mechanism (22); and a driving mechanism (24) for driving the sleeve fixing mechanism (22) and the blade clamping mechanism (23) to work is arranged inside the assembly platform (21); The blade clamping mechanism (23) comprises a lower clamping assembly (231) mounted on the top of the assembly table (21); an upper clamping assembly (232) is arranged above the lower clamping assembly (231); and a transmission assembly (233) for driving the upper clamping assembly (232) to move downward is arranged at one end of the upper clamping assembly (232) away from the shaft sleeve fixing mechanism (22); The upper clamping assembly (232) comprises a slide rail (2321), a guide slider (2322) is slidably mounted inside the slide rail (2321), a return spring (2323) is connected to the outside of the guide slider (2322), one end of the return spring (2323) away from the guide slider (2322) is fixed inside the slide rail (2321), and a clamping block (2324) is connected to the bottom of the guide slider (2322); The transmission assembly (233) comprises a guide column (2331) fixed inside the slide rail (2321); an external movable sleeve of the guide column (2331) is provided with an extrusion block (2332); a compression spring (2333) is provided at the bottom of the extrusion block (2332); a triangular inclined block (2334) is provided below the extrusion block (2332); the triangular inclined block (2334) is fixedly connected to the guide slider (2322); a guide bar (2335) is fixedly connected to the outer side of the guide column (2331); the guide bar (2335) is vertically slidably mounted inside the assembly table (21); and the guide bar (2335) is transmission-connected to the driving mechanism (24); The shaft sleeve fixing mechanism (22) comprises a shell (221) fixed on the top of the assembly table (21); a T-shaped slider (222) is slidably mounted on the top of the shell (221); the T-shaped slider (222) is symmetrically distributed about the center of the shell (221); a fixing claw (223) is fixedly mounted on the top of the T-shaped slider (222); a spiral disk (224) is movably mounted inside the shell (221); the spiral disk (224) is meshed with the bottom of the T-shaped slider (222) via a spiral pattern on the top; and the bottom of the spiral disk (224) is connected to a connecting shaft (226) via a fixedly connected friction torque limiter (225).

2. The cooling fan blade welding and forming processing equipment according to claim 1, Features: The driving mechanism (24) comprises a driving motor (241) located inside the assembly table (21); the driving motor (241) is fixed on the top of the support table (1); the top of the output shaft of the driving motor (241) is fixedly connected to a gear plate (242); the top of the gear plate (242) is coaxially fixedly connected to the bottom of the connecting shaft (226); the edge of the gear plate (242) is drivingly connected to a driving rod (243); the driving rod (243) is movably sleeved inside the assembly table (21); and one end of the driving rod (243) away from the gear plate (242) is fixedly connected to a driving gear (244).

3. The cooling fan blade welding and forming processing equipment according to claim 1, Features: The lower clamping assembly (231) and the upper clamping assembly (232) have the same structure and are symmetrically distributed on the upper and lower sides of the blade; the side of the clamping block (2324) close to the blade is an arc-shaped surface and a groove for limiting the blade is provided on the arc-shaped surface; the top surface of the clamping block (2324) in the lower clamping assembly (231) matches the bottom surface of the blade, and the bottom surface of the clamping block (2324) in the upper clamping assembly (232) matches the top surface of the blade.

4. The cooling fan blade welding and forming processing equipment according to claim 1, Features: The opposing surfaces of the extrusion block (2332) and the triangular inclined block (2334) are both sloped surfaces and fit together. The sloped surface of the triangular inclined block (2334) is inclined from bottom to top in a direction close to the guide slider (2322). The triangular inclined block (2334) is connected to the guide slider (2322) via a rod.

5. The cooling fan blade welding and forming processing equipment according to claim 2, Features: The bottom end of the guide bar (2335) extends to the interior of the assembly table (21), and a rectangular groove begins to be formed inside the guide bar (2335). A rack is fixedly mounted on the side wall of the rectangular groove, and the rack is meshed with the transmission gear (244).

6. The cooling fan blade welding and forming processing equipment according to claim 1, Features: The cross section of the guide slider (2322) is in a T-shaped structure, and a ball bearing is provided between the guide slider (2322) and the slide rail (2321).

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