Machining device for welding impeller of centrifugal fan

Abstract

The invention belongs to the technical field of fan impeller machining, and discloses a centrifugal fan welding impeller machining device which comprises a raw material conveyor and a machining machine body, a punching machine is fixedly installed at the top end of the inner wall of the machining machine body, a workbench is installed in the machining machine body, and a plurality of mold grooves are formed in the workbench; a raw material conveying roller is fixedly installed on the left side of the machining machine body, a first punching cutter is fixedly installed on the left half portion of the bottom end of the punching machine, and a second punching cutter is fixedly installed on the right half portion of the bottom end of the punching machine. A second ejector pin is fixedly mounted in the mold groove in the right half part of the workbench; compared with direct stamping of the whole blade, distributed stamping is carried out on the metal plate to be machined, the phenomenon that the blade is clamped in the die groove in the stamping process is effectively reduced, and therefore the stamping production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of fan impeller processing, and in particular relates to a processing device for a centrifugal fan welded impeller. Background Art

[0002] A centrifugal fan is a mechanical device that relies on input mechanical energy and uses a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction, converting kinetic energy into potential energy, increasing the gas pressure and discharging the gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and air intake of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; inflation and propulsion of wind tunnel wind sources and hovercraft, etc.

[0003] When the existing centrifugal fan impeller processing equipment is in use, the metal sheet to be processed is placed on the workbench, and external force is applied to the metal sheet through hydraulic equipment to cause it to undergo plastic deformation or separation, thereby obtaining an impeller part of the desired shape and size. However, directly stamping the entire blade will cause the blade to be subjected to excessive pressure and become stuck inside the mold slot, making it inconvenient to remove the stamped blade from the mold slot, thereby affecting production efficiency. Summary of the invention

[0004] The present invention aims at the problem that directly stamping the entire blade in the prior art will cause the blade to be subjected to excessive pressure and get stuck inside the die groove, making it inconvenient to remove the stamped blade from the die groove, thereby affecting production efficiency. The present invention proposes the following technical solutions:

[0005] A processing device for welding impellers of centrifugal fans, comprising: a raw material conveyor and a processing body, a punching machine is fixedly installed on the top of the inner wall of the processing body, a workbench is installed inside the processing body, a plurality of mold grooves are opened inside the workbench, a raw material conveying roller is fixedly installed on the left side of the processing body, a first punching knife is fixedly installed on the left half of the bottom end of the punching machine, a second punching knife is fixedly installed on the right half of the bottom end of the punching machine, a first ejector is fixedly installed inside the mold groove of the left half of the workbench, a second ejector is fixedly installed inside the mold groove of the right half of the workbench, a waste stretching roller is installed on the right side of the processing body, and an ejection mechanism is installed on the right half of the inside of the processing body;

[0006] The ejection mechanism includes a driving motor 1 fixedly mounted on the inner wall of the processing machine body, the output shaft of the driving motor 1 is connected to a rotating shaft via a flat key, a cam is fixedly sleeved on the outer surface of the rotating shaft, a push rod is slidably mounted inside the workbench, and an ejection block is fixedly connected to one end of the push rod away from the cam.

[0007] As a preferred embodiment of the above technical solution, a fixing ring block 1 is fixedly sleeved on the outer surface of the push rod, a spring 1 is fixedly connected to the outer side of the fixing ring block 1, an end of the spring 1 away from the fixing ring block 1 is fixedly connected to a fixing ring block 2, and an end of the fixing ring block 2 away from the spring 1 is fixedly installed on the outer surface of the workbench.

[0008] As a preferred embodiment of the above technical solution, an arc-shaped groove is formed on an end surface of the push rod close to the cam, and the outer surface of the cam is in close contact with the inner wall of the arc-shaped groove of the push rod.

[0009] As a preferred embodiment of the above technical solution, a transverse moving and lifting mechanism is installed on the inner left half of the workbench, and the transverse moving and lifting mechanism includes a driving motor 2 fixedly installed on the outer surface of the workbench, the output shaft of the driving motor 2 is fixedly connected to a disc, a connecting rod is fixedly installed on the outer surface of the disc, the outer surface of the connecting rod of the disc is rotatably connected to a connecting shaft, and the end of the connecting shaft away from the disc is rotatably connected to a cross bar.

[0010] As a preferred embodiment of the above technical solution, a vertical rod is slidably installed at one end of the horizontal rod inside the workbench, and a pressure sensor 1 is fixedly installed on the top of the vertical rod.

[0011] As a preferred embodiment of the above technical solution, the cross bar is slidably installed inside the workbench, and the opposite ends of the cross bar and the vertical bar are both arranged as inclined surfaces and are in close contact with each other.

[0012] As a preferred embodiment of the above technical solution, a unloading mechanism is installed at the bottom end of the workbench, and the unloading mechanism includes a cylinder fixedly installed at the bottom end of the workbench, the output end of the cylinder is fixedly connected to a moving block, the top end of the moving block is fixedly connected to a fixed block, the outer surface of the fixed block is installed with a second pressure sensor, and the bottom end of the workbench is located directly below the fixed block and is fixedly connected with an inclined plate.

[0013] As a preferred embodiment of the above technical solution, springs 2 are symmetrically fixedly connected to the outer surface of the fixing block, and two ends of the two springs 2 away from the fixing block are fixedly connected to the same stopper.

[0014] As a preferred embodiment of the above technical solution, the shapes of the fixing block and the stop block are both set to be crescent-shaped, and the widths of the fixing block and the stop block are equal.

[0015] The beneficial effects of the present invention are:

[0016] (1) By performing distributed stamping on the metal sheet to be processed, a portion of the centrifugal fan impeller blade is first stamped, and then the remaining portion of the centrifugal fan impeller is stamped. Compared with directly stamping the entire blade, the phenomenon of the blade being stuck inside the die groove during the stamping process is effectively reduced, thereby improving stamping production efficiency and reducing production costs;

[0017] (2) By installing a transverse lifting mechanism, the driving motor 1 drives the cross bar to move inside the workbench, thereby pushing out the vertical bar, and using the pressure sensor 1 to detect the pressure change, it is possible to accurately detect whether part of the blade is completely cut during the initial stamping process;

[0018] (3) Through the installed unloading mechanism, when the block is squeezed and moves toward the direction close to the pressure sensor 2, the pressure detected by the pressure sensor 2 increases, and it is determined that the entire blade is completely cut off. Then the cylinder starts to work, so that the completely cut blade slides out of the device along the inclined plate and is collected through the collecting box previously installed under the inclined plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 What is shown is a schematic diagram of the overall structure of a processing device for welding impellers of a centrifugal fan;

[0020] Figure 2 What is shown is the structural schematic diagram of the processing machine body;

[0021] Figure 3 Shown is a schematic diagram of the bottom structure of the punching machine;

[0022] Figure 4 What is shown is the schematic diagram of the internal structure of the processing machine body;

[0023] Figure 5 What is shown is a partial structural schematic diagram of the interior of the workbench;

[0024] Figure 6 What is shown is a schematic diagram of the structure of the ejection mechanism;

[0025] Figure 7 What is shown is the structural schematic diagram of the transverse lifting mechanism;

[0026] Figure 8 What is shown is the structural schematic diagram of the material unloading mechanism;

[0027] Fig. 9 Shown is a cross-sectional view of the internal transverse movement and lifting mechanism of the workbench;

[0028] Fig.10 Shown is a cross-sectional view of the unloading mechanism at the bottom end of the workbench.

[0029] In the figure: 1. raw material conveyor; 2. processing machine body; 21. punching machine; 22. workbench; 23. mold groove; 24. raw material transport roller; 25. first punching knife; 26. second punching knife; 27. first ejector; 28. second ejector; 3. scrap stretching roller; 4. ejector mechanism; 41. driving motor 1; 42. rotating shaft; 43. cam; 44. ejector rod; 45. fixed ring block 1; 46. spring 1; 47. fixed ring block 2; 48. ejector block; 5. transverse lifting mechanism; 51. driving motor 2; 52. connecting shaft; 53. cross bar; 54. vertical bar; 55. pressure sensor 1; 56. disc; 6. unloading mechanism; 61. cylinder; 62. moving block; 63. fixed block; 64. spring 2; 65. pressure sensor 2; 66. stopper; 67. inclined plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] Example 1

[0032] The present invention provides a processing device for welding impellers of centrifugal fans, such as Figures 1 to 10As shown, it includes a raw material conveyor 1 and a processing body 2, a punching machine 21 is fixedly installed on the top of the inner wall of the processing body 2, a workbench 22 is installed inside the processing body 2, and a plurality of mold grooves 23 are opened inside the workbench 22, a raw material conveying roller 24 is fixedly installed on the left side of the processing body 2, a first punching knife 25 is fixedly installed on the left half of the bottom end of the punching machine 21, and a second punching knife 26 is fixedly installed on the right half of the bottom end of the punching machine 21, the number of the first punching knife 25 and the second punching knife 26 are both set to two, and the number of the mold grooves 23 is opened to four, the shape of the first punching knife 25 is set to a part of the whole blade to be processed, and the shape of the second punching knife 26 is set to the remaining part of the whole blade to be processed. The first punching knife 25 is used to cut the raw material that is first cut by the first punching knife 25, and then the second punching knife 26 is used to cut the remaining uncut blades as a whole. A first ejector pin 27 is fixedly installed inside the mold groove 23 of the left half of the workbench 22, and a second ejector pin 28 is fixedly installed inside the mold groove 23 of the right half of the workbench 22. The extended height of the first ejector pin 27 is the same as the depth of the opened mold groove 23, and the first ejector pin 27 is installed at the position of the mold groove 23 corresponding to the first punching knife 25. The extended height of the second ejector pin 28 is half of the depth of the mold groove 23, and the second ejector pin 28 is installed at the position of the mold groove 23 corresponding to the second punching knife 26. A waste stretching roller 3 is installed on the right side of the processing body 2. When in use, the metal sheet raw material for processing the centrifugal fan impeller is installed on the raw material conveyor 1, the metal sheet raw material is stretched so that it passes through the raw material transport roller 24 and is laid flat on the surface of the workbench 22, and the end of the metal sheet raw material away from the raw material conveyor 1 is wrapped around the outer surface of the waste stretching roller 3, and then the waste stretching roller 3 is started to rotate to maintain a certain speed, and the punching machine 21 is started to punch and cut the raw material laid flat on the surface of the workbench 22. The above are all prior arts and will not be repeated here; the ejection mechanism 4 is installed on the right half of the interior of the processing body 2, and the ejection mechanism 4 includes a driving motor 41 fixedly installed on the inner wall of the processing body 2, and the output shaft of the driving motor 41 is connected to the rotating shaft through a flat key. The outer surface of the rotating shaft 42 is fixedly sleeved with a cam 43, and the inside of the workbench 22 is slidably installed with a push rod 44, and the end of the push rod 44 away from the cam 43 is fixedly connected with an ejection block 48. An arc groove is provided on the end surface of the push rod 44 close to the cam 43, and the outer surface of the cam 43 is in contact with the inner wall of the arc groove of the push rod 44. The driving motor 41 is started to drive the rotating shaft 42 to rotate. When the rotating shaft 42 rotates, it drives the cam 43 to rotate, and then the raised part of the cam 43 rotates and in contact with the inner wall of the arc groove of the push rod 44, so that the push rod 44 drives the ejection block 48 to move in the direction close to the second ejector 28, and then the completely cut blade is ejected, so that the cut blade is discharged smoothly.

[0033] like Figure 5 and Figure 6 As shown, the outer surface of the ejector rod 44 is fixedly sleeved with a fixing ring block 45, the outer side of the fixing ring block 45 is fixedly connected with a spring 46, the end of the spring 46 away from the fixing ring block 45 is fixedly connected with a fixing ring block 2 47, and the end of the fixing ring block 27 away from the spring 46 is fixedly installed on the outer surface of the workbench 22, and when the cam 43 rotates to make its protruding portion fit and contact the inner wall of the arc groove of the ejector rod 44, the spring 46 is compressed and deformed, and when the cam 43 continues to rotate to make its protruding portion completely separate from the arc groove inside the ejector rod 44, the compressed spring 46 returns to its original state, thereby driving the ejector rod 44 and the ejection block 48 to move in a direction away from the second ejector pin 28, so that the ejector rod 44 and the ejection block 48 return to their original positions, thereby realizing the reciprocating work of the ejector rod 44 and the ejection block 48.

[0034] like Figure 4 , Figure 7 and Fig. 9 As shown, a transverse movement and lifting mechanism 5 is installed on the left half of the interior of the workbench 22, and the transverse movement and lifting mechanism 5 includes a driving motor 2 51 fixedly installed on the outer surface of the workbench 22, and the output shaft of the driving motor 2 51 is fixedly connected to a disc 56, and a connecting rod is fixedly installed on the outer surface of the disc 56, and the outer surface of the connecting rod of the disc 56 is rotatably connected to a connecting shaft 52, and the end of the connecting shaft 52 away from the disc 56 is rotatably connected to a cross bar 53, and the cross bar 53 is slidably installed inside the workbench 22, and a vertical rod 54 is slidably installed at one end of the cross bar 53 inside the workbench 22, and a pressure sensor 1 55 is fixedly installed on the top of the vertical rod 54, and the opposite ends of the cross bar 53 and the vertical rod 54 are set to be inclined surfaces and are in contact with each other. When the driving motor 2 51 is started, it drives the disc 56 to rotate, and when the disc 56 rotates, it drives the disc When the connecting rod 53 moves toward the vertical rod 54, the inclined surfaces of the cross rod 53 and the vertical rod 54 fit and contact each other, so that the movement of the vertical rod 54 drives the pressure sensor 55 to slide upward, so that the pressure sensor 55 performs pressure detection on the blades preliminarily punched by the first punching knife 25. When the pressure detected by the pressure sensor 55 is too large, it indicates that part of the blade preliminarily punched by the first punching knife 25 has not been completely cut, thereby promptly reminding the staff to adjust the punching work to ensure the quality and efficiency of the blade punching process.

[0035] like Figure 8 and Fig.10As shown, a feeding mechanism 6 is installed at the bottom end of the workbench 22, and the feeding mechanism 6 includes a cylinder 61 fixedly installed at the bottom end of the workbench 22, and a moving block 62 is fixedly connected to the output end of the cylinder 61, and a fixed block 63 is fixedly connected to the top of the moving block 62. A pressure sensor 65 is installed on the outer surface of the fixed block 63. The bottom end of the workbench 22 is located directly below the fixed block 63 and is fixedly connected to an inclined plate 67. The outer surface of the fixed block 63 is symmetrically fixedly connected to springs 64, and the ends of the two springs 64 away from the fixed block 63 are fixedly connected to the same stopper 66. The shapes of the fixed block 63 and the stopper 66 are both set to be crescent-shaped, and the widths of the fixed block 63 and the stopper 66 are equal. A slide groove is provided inside the workbench 22 corresponding to the outer sides of the fixed block 63 and the stopper 66. The blades punched by the second punching knife 26 are completely cut off and fall to the second ejector pin. 28, under the ejection action of the ejection block 48, the completely fallen blade moves in the direction close to the stopper 66, so that the stopper 66 squeezes the pressure sensor 2 65 and the spring 2 64 is compressed and deformed. By observing the pressure change of the pressure sensor 2 65, it is judged whether the blade is completely cut off. If the blade is not completely cut and falls to the top of the second ejector pin 28, the stopper 66 is not squeezed and the pressure sensor 2 65 has no obvious pressure change. If the pressure sensor 2 65 detects a significant pressure increase, the blade is completely cut and falls to the top of the second ejector pin 28, and the cylinder 61 starts to work to drive the fixed block 63 to move away from the second ejector pin 28, so that the completely cut blade is ejected by the ejection block 48 and falls onto the inclined plate 67, and the material collecting box installed below the inclined plate 67 completes the collection of the cut blade.

[0036] Working principle: When in use, the raw material wound on the raw material conveyor 1 passes through the raw material transport roller 24 and is laid flat on the surface of the workbench 22. The end of the raw material away from the raw material conveyor 1 is installed on the waste stretching roller 3. The waste stretching roller 3 is started to work so that it drives the raw material to move slowly. Then the punching machine 21 works to punch the raw material on the surface of the workbench 22. The raw material is partially cut by the first punching knife 25. When the partially cut raw material moves to the position corresponding to the second punching knife 26, the remaining uncut raw material is cut by the second punching knife 26. The cut part is cut to avoid directly punching the entire blade and causing the blade to be stuck in the mold groove 23. Then the driving motor 41 is driven to drive the rotating shaft 42 to rotate. When the rotating shaft 42 rotates, the cam 43 is driven to rotate, so that the raised part of the cam 43 is in contact with the arc groove of the ejector rod 44, so that the spring 46 is compressed, and the ejector rod 44 and the ejection block 48 move in the direction close to the second ejector pin 28, so that the ejection block 48 ejects the blade that has been completely cut and dropped, effectively reducing the phenomenon of the blade being stuck in the mold groove 23.

[0037] The drive motor 2 51 is started to drive the disc 56 to rotate. When the disc 56 rotates, it drives the connecting rod fixedly connected to the surface of the disc 56 to make a circular motion. When the connecting rod on the surface of the disc 56 makes a circular motion, it drives the connecting shaft 52 to swing back and forth, thereby making the cross bar 53 slide back and forth inside the workbench 22. When the cross bar 53 slides in the direction close to the vertical rod 54, the inclined surfaces of the cross bar 53 and the vertical rod 54 fit and contact each other, making the vertical rod 54 slide upward, thereby driving the pressure sensor 1 55 to move. When the pressure sensor 1 55 moves, it contacts the raw material that has been partially cut by the first punching knife 25. By monitoring the value change of the pressure sensor 1 55, it is determined whether the part of the raw material cut by the first punching knife 25 is completely cut. If the value of the pressure sensor 1 55 is too large, the part of the raw material cut by the first punching knife 25 is not completely cut, thereby promptly reminding the staff to adjust the punching work to ensure the quality and efficiency of the punching process.

[0038] When the blade partially cut by the first punching knife 25 is transported to the corresponding position of the second punching knife 26, it is further cut by the second punching knife 26 so that the whole blade falls completely to the top of the second ejector pin 28. At this time, the ejection block 48 ejects the fallen blade so that the blade moves toward the direction close to the stopper 66, thereby compressing the spring 2 64 and driving the stopper 66 to squeeze the pressure sensor 2 65. By observing the pressure value change of the pressure sensor 2 65, it is judged whether the blade is completely cut and falls to the top of the second ejector pin 28. If the ejection block 48 moves toward the direction close to the second ejector pin 28, When the value of the second pressure sensor 65 does not change, the blades cut by the second punching knife 26 are not completely cut and fall off. If the value of the second pressure sensor 65 increases significantly, the blades cut by the second punching knife 26 are completely cut and fall to the top of the second ejector pin 28. Then the cylinder 61 starts to drive the fixed block 63 to move away from the second ejector pin 28, so that the stopper 66 no longer blocks the cut blades. At this time, the ejection block 48 continues to eject the cut blades, thereby squeezing the blades out and dropping them onto the inclined plate 67, thereby collecting and sorting the cut blades.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A processing device for welding impellers of centrifugal fans, characterized in that: include: A raw material conveyor (1) and a processing machine body (2), wherein a punching machine (21) is fixedly installed at the top of the inner wall of the processing machine body (2), a workbench (22) is installed inside the processing machine body (2), a plurality of mold grooves (23) are opened inside the workbench (22), a raw material conveying roller (24) is fixedly installed on the left side of the processing machine body (2), a first punching knife (25) is fixedly installed on the left half of the bottom end of the punching machine (21), a second punching knife (26) is fixedly installed on the right half of the bottom end of the punching machine (21), a first ejector pin (27) is fixedly installed inside the mold groove (23) of the left half of the working table (22), a second ejector pin (28) is fixedly installed inside the mold groove (23) of the right half of the working table (22), a waste stretching roller (3) is installed on the right side of the processing machine body (2), and an ejection mechanism (4) is installed on the right half of the inside of the processing machine body (2); The ejection mechanism (4) comprises a driving motor (41) fixedly mounted on the inner wall of the processing machine body (2); the output shaft of the driving motor (41) is connected to a rotating shaft (42) via a flat key; a cam (43) is fixedly sleeved on the outer surface of the rotating shaft (42); a push rod (44) is slidably mounted inside the workbench (22); and an ejection block (48) is fixedly connected to one end of the push rod (44) away from the cam (43).

2. The processing device for welding impeller of centrifugal fan according to claim 1, characterized in that: The outer surface of the push rod (44) is fixedly sleeved with a fixing ring block 1 (45), the outer side of the fixing ring block 1 (45) is fixedly connected with a spring 1 (46), the end of the spring 1 (46) away from the fixing ring block 1 (45) is fixedly connected with a fixing ring block 2 (47), and the end of the fixing ring block 2 (47) away from the spring 1 (46) is fixedly installed on the outer surface of the workbench (22).

3. The processing device for welding impeller of centrifugal fan according to claim 2, characterized in that: An arc-shaped groove is formed on one end surface of the push rod (44) close to the cam (43), and the outer surface of the cam (43) is in close contact with the inner wall of the arc-shaped groove of the push rod (44).

4. The processing device for welding impeller of centrifugal fan according to claim 1, characterized in that: A transverse movement and lifting mechanism (5) is installed in the inner left half of the workbench (22), and the transverse movement and lifting mechanism (5) includes a second drive motor (51) fixedly installed on the outer surface of the workbench (22), and the output shaft of the second drive motor (51) is fixedly connected to a disk (56), and a connecting rod is fixedly installed on the outer surface of the disk (56), and the outer surface of the connecting rod of the disk (56) is rotatably connected to a connecting shaft (52), and the end of the connecting shaft (52) away from the disk (56) is rotatably connected to a cross bar (53).

5. The processing device for welding impeller of centrifugal fan according to claim 4, characterized in that: A vertical rod (54) is slidably mounted on one end of the horizontal rod (53) inside the workbench (22), and a pressure sensor (55) is fixedly mounted on the top of the vertical rod (54).

6. The processing device for welding impeller of centrifugal fan according to claim 4, characterized in that: The cross bar (53) is slidably mounted inside the workbench (22), and the opposite ends of the cross bar (53) and the vertical bar (54) are both arranged as inclined surfaces and are in close contact with each other.

7. The processing device for welding impeller of centrifugal fan according to claim 1, characterized in that: A material unloading mechanism (6) is installed at the bottom end of the workbench (22), and the material unloading mechanism (6) comprises a cylinder (61) fixedly installed at the bottom end of the workbench (22), the output end of the cylinder (61) is fixedly connected to a moving block (62), the top end of the moving block (62) is fixedly connected to a fixed block (63), a second pressure sensor (65) is installed on the outer surface of the fixed block (63), and an inclined plate (67) is fixedly connected to the bottom end of the workbench (22) directly below the fixed block (63).

8. The processing device for welding impeller of centrifugal fan according to claim 7, characterized in that: The outer surface of the fixed block (63) is symmetrically fixedly connected with a second spring (64), and one end of the two second springs (64) away from the fixed block (63) is fixedly connected with the same stopper (66).

9. The processing device for welding impeller of centrifugal fan according to claim 8, characterized in that: The shapes of the fixing block (63) and the stop block (66) are both set to be crescent-shaped, and the widths of the fixing block (63) and the stop block (66) are equal.

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