Base punching device of low-vibration centrifugal fan

Abstract

The base punching device of the low-vibration centrifugal fan comprises a machine frame, a middle supporting frame is fixed to the middle of the top face of a top plate of the machine frame, edge fixing plates are fixed to the left portion, the right portion, the front portion and the rear portion of the top face of the top plate of the middle supporting frame, and two threaded through holes are formed in the middle of each edge fixing plate. Screw rod parts of the adjusting bolts are connected into the corresponding threaded through holes in a threaded mode, the inner ends of the screw rod parts of the adjusting bolts extend out of the inner sides of the edge fixing plates, the ends of the screw rod parts of the two adjusting bolts on the same side are movably connected to the clamping plates on the same side, and a rectangular frame-shaped base to be machined is placed in the middle of the top face of the top plate of the rack. The outer side walls of the side plates of the base are tightly attached to the corresponding side clamping plates. Machining is convenient, four mounting holes in the whole base can be machined at a time, the machining efficiency is high, the effect is good, the manual labor amount is greatly reduced, and the device is suitable for mass production.

Description

Technical field:

[0001] The utility model relates to the technical field of fan processing equipment, and more specifically to a base punching device for a low-vibration centrifugal fan. Background technology:

[0002] When the existing centrifugal fan is in use, it drives the impeller in the volute to rotate through the operation of the motor. When the motor and the impeller rotate, a lot of vibration will be generated. Therefore, in order to reduce noise and improve its operating stability, it is necessary to install a shock absorbing mechanism on the base. Therefore, it is necessary to process the mounting hole on the base.

[0003] The existing method is to manually place the base under the drilling machine for processing one by one, that is, after processing one mounting hole, the base needs to be rotated, and another processing position thereof is facing the drill bit for further processing. The processing efficiency is low and the manual labor is very large. Utility model content:

[0004] The purpose of the utility model is to provide a base punching device for a low-vibration centrifugal fan in view of the shortcomings of the prior art. It is easy to process and can complete the processing of four mounting holes on the entire base at one time. It has high processing efficiency and good effect, greatly reduces the amount of manual labor, and is suitable for mass production.

[0005] The technical solutions of the utility model are as follows:

[0006] A base punching device for a low-vibration centrifugal fan comprises a frame, an intermediate support frame is fixed to the middle of the top surface of the top plate of the frame, and side fixing plates are fixed to the left, right, front and rear of the top surface of the top plate of the intermediate support frame, and two screw-connected through holes are formed in the middle of each side fixing plate, and the screw part of the adjusting bolt is screwed in the corresponding screw-connected through hole, and the inner end of the screw part of the adjusting bolt extends out of the inner side of the side fixing plate, and the ends of the screw parts of the two adjusting bolts on the same side are movably connected to the same side clamping plate, and the rectangular frame-shaped base to be processed is placed in the middle of the top surface of the top plate of the frame, and the outer side wall of the side plate of the base is close to the corresponding side clamping plate;

[0007] An upper support frame is installed above the top plate of the frame, a pushing cylinder is fixed to the top surface of the top plate of the upper support frame, the bottom end of the push rod of the pushing cylinder extends out of the bottom surface of the top plate of the upper support frame and is fixed to a lifting frame, a lower horizontal fixing plate is fixed to the bottom surface of the lifting frame, the front and rear parts of the left and right sides of the lower horizontal fixing plate are movably connected with a main rotating shaft through bearings, the bottom end of the main rotating shaft extends out of the bottom surface of the lower horizontal fixing plate and is fixed to a punching head, and the punching head faces the bottom bent edge of the left or right side of the base.

[0008] A vertical through hole extending vertically downward is formed on the top surface of the middle support frame directly below the punching head.

[0009] Guide blocks are fixed to the middle parts of the left and right walls of the lower horizontal fixed plate;

[0010] The upper support frame includes vertical side panels fixed to the left and right sides of the top surface of the top plate of the frame, the top plate is fixed to the top surfaces of the two vertical side panels, and the middle parts of the inner side walls of the two vertical side panels are fixed with vertically extending guide grooves, and the guide blocks are inserted and matched in the guide grooves of the corresponding guide grooves. The guide blocks can ensure the stable lifting of the lower horizontal fixed plate, and at the same time, it is not easy to cause deflection and other problems during lifting.

[0011] A pushing cylinder is fixed to the left and right parts of the top surface of the top plate of the upper support frame. The bottom end of the push rod of the pushing cylinder extends out of the bottom surface of the top plate of the upper support frame and is movably connected to a fixing seat through a hinge shaft. The fixing seat is fixed to the top surface of the lifting frame.

[0012] A main rotating motor is fixed to the middle of the top surface of the top plate of the lifting frame, the bottom end of the output shaft of the main rotating motor extends out of the bottom surface of the top plate of the lifting frame and is fixed with a driving gear, the top end of the main rotating shaft extends out of the top surface of the lower horizontal fixed plate and is fixed with a transmission gear, an idler shaft is movably connected with the lower horizontal fixed plate between the transmission gear and the driving gear through a bearing, an intermediate transmission gear is fixed on the idler shaft, the intermediate transmission gear is meshed with the driving gear, and the intermediate transmission gear is meshed with the corresponding transmission gear.

[0013] The beneficial effects of the utility model are:

[0014] It is easy to process and can process four mounting holes on the entire base at one time. It has high processing efficiency and good effect, greatly reduces manual labor, and is suitable for mass production. Description of the drawings:

[0015] Figure 1 It is a partial structural schematic diagram of the utility model;

[0016] Figure 2 It is a partial top view above the lower horizontal fixing plate of the utility model;

[0017] Figure 3 It is a partial top view of the top plate of the rack. Specific implementation method:

[0018] Example: See Figures 1 to 3As shown, a base punching device for a low-vibration centrifugal fan comprises a frame 10, wherein an intermediate support frame 20 is fixed to the middle of the top surface of the top plate of the frame 10, and edge fixing plates 21 are fixed to the left, right, front and rear of the top surface of the top plate of the intermediate support frame 20, and two screw-connected through holes are formed in the middle of each edge fixing plate 21, and the screw portion of the adjusting bolt 22 is screwed into the corresponding screw-connected through hole, and the inner end of the screw portion of the adjusting bolt 22 extends out of the inner side of the edge fixing plate 21, and the ends of the screw portions of the two adjusting bolts 22 on the same side are movably connected to the same side clamping plate 23, and the rectangular frame-shaped base 100 to be processed is placed in the middle of the top surface of the top plate of the frame 10, and the outer side wall of the side plate of the base 100 is tightly attached to the anti-slip layer fixed on the inner side wall of the corresponding side clamping plate 23;

[0019] It can adjust the position of the side clamping plate 23 by rotating the corresponding two adjusting bolts 22 as needed, so as to clamp and fix the base 100. Moreover, it can also change the horizontal position of the base 100 according to the change of the position of the side clamping plate 23 to ensure the accuracy of the clamping position of the base 100 and ensure that the subsequent punching head 35 can be aligned with the bottom bent edge 101 of the corresponding side of the base 100.

[0020] Furthermore, an upper support frame 30 is installed above the top plate of the frame 10, and the upper support frame 30 includes vertical side panels fixed to the left and right sides of the top surface of the top plate of the frame 10, and the top plate is fixed to the top surfaces of the two vertical side panels, and vertically extending guide grooves are fixed to the middle parts of the inner side walls of the two vertical side panels, and pushing cylinders 31 are fixed to the left and right parts of the top surface of the top plate of the upper support frame 30, and the bottom end of the push rod of the pushing cylinder 31 extends out of the bottom surface of the top plate of the upper support frame 30 and is movably connected to a fixed seat 311 through a hinge shaft, and the fixed seat 311 is fixed on the top surface of the lifting frame 32. With this structure, when the push rods of the two pushing cylinders 31 are pushed, there is a small time difference (that is, there is a very small gap, such as a 0.1 second difference in the start-up of the two), and it can still lift the lower horizontal fixed plate 33 normally.

[0021] A lower horizontal fixing plate 33 is fixed to the bottom surface of the lifting frame 32, and guide blocks 1 are fixed to the middle of the left and right walls of the lower horizontal fixing plate 33. The guide blocks 1 are inserted into the guide grooves of the corresponding guide groove bodies and match them.

[0022] Furthermore, the front and rear parts of the left and right sides of the lower horizontal fixed plate 33 are movably connected to the main rotating shaft 34 through bearings. The bottom end of the main rotating shaft 34 extends out of the bottom surface of the lower horizontal fixed plate 33 and is fixed with a punching head 35. The punching head 35 faces the bottom bent edge 101 that is horizontally bent inwardly formed at the bottom of the side panel on the left or right side of the base 100.

[0023] A vertical through hole 24 extending vertically downward is formed on the top surface of the intermediate support frame 20 directly below the punching head 35 .

[0024] The bottom end of the vertical through hole 24 is formed with a horizontal through groove extending left and right, the outer end of the horizontal through groove extends out of the left wall or right wall of the middle support frame 20, the inner end of the horizontal through groove is communicated with the bottom through groove formed on the middle bottom surface of the middle support frame 20, and the bottom through groove is communicated with the middle through groove of the top plate of the frame 10. The scraps in the vertical through hole 24 during the processing can fall along the vertical through hole 24 to the horizontal through groove, which is convenient for cleaning.

[0025] Furthermore, a main rotating motor 321 is fixed to the middle of the top surface of the top plate of the lifting frame 32, the bottom end of the output shaft of the main rotating motor 321 extends out of the bottom surface of the top plate of the lifting frame 32 and is fixed with a driving gear 322, the top end of the main rotating shaft 34 extends out of the top surface of the lower horizontal fixed plate 33 and is fixed with a transmission gear 341, an idler shaft is movably connected to the lower horizontal fixed plate 33 between the transmission gear 341 and the driving gear 322 through a bearing, an intermediate transmission gear 323 is fixed on the idler shaft, the intermediate transmission gear 323 is meshed with the driving gear 322, and the intermediate transmission gear 323 is meshed with the corresponding transmission gear 341.

[0026] The main rotating motor 321 is inserted into the middle through groove of the top plate of the upper support frame 30 .

[0027] The front and rear bottom surfaces of the lower horizontal fixed plate 33 are both fixed with a buffer pressing device 50 , and the bottom of the buffer pressing device 50 faces the top surface of the bottom bending plate of the front or rear part of the base 100 .

[0028] The buffer pressing device 50 includes an upper fixed block 51 fixed to the left and right parts of the bottom surface of the front and rear parts of the lower horizontal fixed plate 33, a lower sleeve block 52 is provided below the upper fixed block 51, a slot is formed in the middle part of the top surface of the lower sleeve block 52, a plurality of buffer springs 53 are inserted in the slot, the bottom end of the buffer spring 53 is fixed to the bottom surface of the slot, the top end of the buffer spring 53 is fixed to the bottom surface of the upper fixed block 51, the lower part of the upper fixed block 51 is inserted in the upper part of the slot and cooperates with the slot, the bottom surface of the lower sleeve block 52 faces the top surface of the bottom bent plate formed by the bottom inner wall of the side panel at the front or rear of the base 100.

[0029] When this embodiment is used, the rectangular frame-shaped base 100 to be processed is placed in the middle of the top surface of the top plate of the frame 10, and the outer side wall of the side plate of the base 100 is closely attached to the anti-slip layer fixed on the inner side wall of the corresponding side clamping plate 23;

[0030] The position of the side clamping plate 23 can be adjusted by rotating the two corresponding adjusting bolts 22 as needed to ensure the accuracy of the clamping position. Since some bases 100 in a batch of bases 100 may have deviations in size, it is necessary to change the position of the side clamping plate 23 by rotating the corresponding adjusting bolts 22 to ensure the positioning and clamping of the base 100.

[0031] Then, the main rotating motor 321 is operated to rotate the driving gear 322, and drives the four intermediate transmission gears 323 to rotate, and then drives the four transmission gears 341 to rotate, so that the punching head 35 rotates, and then, the four punching heads 35 are pushed by the push rods of the two pushing oil cylinders 31, so that the four punching heads 35 descend. During the descending process, the bottom surfaces of all the lower sleeve blocks 52 are first pressed against the top surfaces of the corresponding front or rear bottom bending plates of the base 100, and further compacted;

[0032] Then, as the lower horizontal fixed plate 33 descends, all the buffer springs 53 are compressed. At the same time, the four punching heads 35 descend and rotate to punch holes at the corresponding positions of the bottom bending edges 101 of the left and right parts of the base 100. The processing can be completed in one time, with good effect and high efficiency.

[0033] After the processing is completed, all parts are returned to their positions, and the adjusting bolts 22 are loosened, the base 100 can be taken out, and then a new base 100 can be installed for processing, which is very convenient.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A base punching device for a low-vibration centrifugal fan, comprising a frame (10), characterized in that: An intermediate support frame (20) is fixed to the middle of the top surface of the top plate of the frame (10), and side fixing plates (21) are fixed to the left, right, front and rear of the top surface of the top plate of the intermediate support frame (20), and two screw-connecting through holes are formed in the middle of each side fixing plate (21), and the screw rod portion of the adjusting bolt (22) is screwed into the corresponding screw-connecting through hole, and the inner end of the screw rod portion of the adjusting bolt (22) extends out of the inner side of the side fixing plate (21), and the ends of the screw rod portions of the two adjusting bolts (22) on the same side are movably connected to the same side clamping plate (23), and the rectangular frame-shaped base (100) to be processed is placed in the middle of the top surface of the top plate of the frame (10), and the outer side wall of the side plate of the base (100) is tightly attached to the corresponding side clamping plate (23); An upper support frame (30) is installed above the top plate of the frame (10), a pushing cylinder (31) is fixed to the top surface of the top plate of the upper support frame (30), the bottom end of the push rod of the pushing cylinder (31) extends out of the bottom surface of the top plate of the upper support frame (30) and is fixed to a lifting frame (32), a lower horizontal fixing plate (33) is fixed to the bottom surface of the lifting frame (32), the front and rear parts of the left and right sides of the lower horizontal fixing plate (33) are movably connected to a main rotating shaft (34) through bearings, the bottom end of the main rotating shaft (34) extends out of the bottom surface of the lower horizontal fixing plate (33) and is fixed to a punching head (35), and the punching head (35) faces the bottom bending edge (101) on the left or right side of the base (100).

2. The base punching device for a low-vibration centrifugal fan according to claim 1, characterized in that: A vertical through hole (24) extending vertically downward is formed on the top surface of the intermediate support frame (20) directly below the punching head (35).

3. The base punching device for a low-vibration centrifugal fan according to claim 2, characterized in that: The bottom end of the vertical through hole (24) is formed with a transverse through groove extending left and right, the outer end of the transverse through groove extends out of the left wall or right wall of the middle support frame (20), the inner end of the transverse through groove is communicated with a bottom through groove formed on the middle bottom surface of the middle support frame (20), and the bottom through groove is communicated with the middle through groove of the top plate of the frame (10).

4. The base punching device for a low-vibration centrifugal fan according to claim 1, characterized in that: A guide block (1) is fixed to the middle of the left side wall and the right side wall of the lower horizontal fixing plate (33); The upper support frame (30) comprises vertical side panels fixed on the left and right sides of the top surface of the top plate of the frame (10), the top plate is fixed on the top surfaces of the two vertical side panels, and vertically extending guide groove bodies are fixed to the middle parts of the inner side walls of the two vertical side panels, and the guide blocks (1) are inserted into the guide grooves of the corresponding guide groove bodies and cooperate with each other.

5. The base punching device for a low-vibration centrifugal fan according to claim 1, characterized in that: A pushing cylinder (31) is fixed to the left and right parts of the top surface of the top plate of the upper support frame (30); the bottom end of the push rod of the pushing cylinder (31) extends out of the bottom surface of the top plate of the upper support frame (30) and is movably connected to a fixing seat (311) via a hinge shaft; the fixing seat (311) is fixed to the top surface of the lifting frame (32).

6. The base punching device for a low-vibration centrifugal fan according to claim 4, characterized in that: A main rotating motor (321) is fixed to the middle of the top surface of the top plate of the lifting frame (32); the bottom end of the output shaft of the main rotating motor (321) extends out of the bottom surface of the top plate of the lifting frame (32) and is fixed with a driving gear (322); the top end of the main rotating shaft (34) extends out of the top surface of the lower horizontal fixing plate (33) and is fixed with a transmission gear (341); an idler shaft is movably connected to the lower horizontal fixing plate (33) between the transmission gear (341) and the driving gear (322) through a bearing; an intermediate transmission gear (323) is fixed to the idler shaft; the intermediate transmission gear (323) is meshed with the driving gear (322); and the intermediate transmission gear (323) is meshed with the corresponding transmission gear (341).

7. The base punching device for a low-vibration centrifugal fan according to claim 6, characterized in that: The main rotating motor (321) is inserted into a middle through slot of the top plate of the upper support frame (30).

8. The base punching device for a low-vibration centrifugal fan according to claim 1, characterized in that: The front and rear bottom surfaces of the lower horizontal fixed plate (33) are both fixed with a buffer pressing device (50), and the bottom of the buffer pressing device (50) faces the top surface of the bottom bending plate of the front or rear of the base (100).

9. The base punching device for a low-vibration centrifugal fan according to claim 8, characterized in that: The buffer pressing device (50) comprises an upper fixed block (51) fixed to the left and right parts of the bottom surface of the front and rear parts of the lower horizontal fixed plate (33); a lower sleeve block (52) is provided below the upper fixed block (51); a slot is formed in the middle of the top surface of the lower sleeve block (52); a plurality of buffer springs (53) are inserted in the slot; the bottom end of the buffer spring (53) is fixed to the bottom surface of the slot; the top end of the buffer spring (53) is fixed to the bottom surface of the upper fixed block (51); the lower part of the upper fixed block (51) is inserted in the upper part of the slot and matched with the slot; the bottom surface of the lower sleeve block (52) faces the top surface of the bottom bending plate of the front or rear part of the base (100).

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