Automobile spring plate production device

Abstract

The invention discloses an automobile spring plate production device, and relates to the technical field of automobile spring tray production, the automobile spring plate production device comprises a base, a vibration plate and a vibrator mounted in the vibration plate, a plurality of groups of damping springs are fixedly arranged between the bottom of the vibration plate and the base, and a discharge port is fixedly formed in the vibration plate; by means of the designed screening mechanism, in the grinding process, when the size and weight of some grinding stone located in a vibration disc become smaller after long-time grinding, a shielding plate located on the surface of an inclined plate is moved upwards or downwards according to the particle size of the grinding stone needing to be screened out, and then the shielding plate can shield part of the triangular hole in size; the size of the triangular hole can be adjusted, then grinding stones can enter the discharging port under the vibration effect of the vibration disc to screen the grinding stones with different sizes, the grinding stones with different sizes in the vibration disc do not need to be integrally replaced, and the replacement cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile spring tray production, in particular to an automobile spring tray production device. Background Art

[0002] Automobile spring disc, also known as spring tray, is one of the important parts of automobile shock absorber. It plays the role of supporting automobile shock absorber spring. Its shape is mostly bowl-shaped. The spring tray of automobile shock absorber is usually mounted on the piston rod of shock absorber. During the production and processing of spring tray, it is stamped into a bowl shape by stamping equipment. There will be certain burrs on the spring tray, which needs to be ground and polished by a vibration grinder to remove the burrs and increase the glossiness of the spring tray.

[0003] In the prior art, grinding stones are placed in a vibration plate in a vibration grinder, and then a spring tray is placed in the vibration plate for grinding. During the grinding process, some grinding stones in the vibration plate will become smaller in size and weight after a long period of grinding. In order to ensure the grinding effect on the spring tray, it is necessary to take out and replace grinding stones of different sizes in the vibration plate with new grinding stones, and the larger grinding stones in the vibration plate are also taken out together with the smaller grinding stones, resulting in the larger grinding stones cannot be reused, increasing the use cost and material waste. For this reason, we propose an automobile spring plate production device. Summary of the invention

[0004] The object of the present invention is to provide a production device for automobile spring discs to solve the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automobile spring disk production device, comprising a base, a vibration disk and a vibrator installed inside the vibration disk, a plurality of groups of shock-absorbing springs are fixedly arranged between the bottom of the vibration disk and the base, a discharge port is fixedly arranged on the vibration disk, an arc-shaped baffle is arranged at one end of the discharge port, and a screening mechanism is arranged on the discharge port;

[0006] The screening mechanism includes an inclined plate, three groups of shielding plates and two groups of F-shaped frames, the inclined plate is provided with multiple groups of triangular holes inside, the shielding plate is located on the surface of the inclined plate, lower plates are fixedly provided on both end surfaces of the shielding plate, a screw rod is rotatably provided on the F-shaped frame, a nut seat is provided on the outside of the screw rod, a limiting rod is fixedly provided on the F-shaped frame, multiple groups of limiting rings are slidably provided on the outside of the limiting rod, two groups of connecting plates are fixedly provided between the nut seat and the limiting ring, a short column is fixedly provided between the limiting ring and the lower plate, a connecting motor is fixedly provided on the F-shaped frame, and the working end of the connecting motor is fixedly connected to the end of the screw rod.

[0007] Preferably, a long groove is opened inside the F-shaped frame, a movable plate is fixedly arranged on the nut seat, and the end of the movable plate passes through the interior of the long groove, the interior of the movable plate is connected with a locking screw through a thread, and the working end of the locking screw extends to the surface of the F-shaped frame.

[0008] Preferably, a plurality of groups of L-shaped connecting rods are fixedly arranged between the F-shaped frame and the inclined plate, and the F-shaped frame is located on both sides of the discharge port.

[0009] Preferably, two groups of rotating parts for opening or closing the inclined plate are arranged between the top of the inclined plate and the discharge port, and the rotating parts include disks fixed on both sides of the top of the inclined plate and arc-shaped plates located outside the disks, and the outer wall of the disks is provided with multiple groups of mounting holes evenly arranged along the circumferential direction of the disks, the interior of the arc-shaped plates is threadedly connected with T-shaped studs, and the working ends of the T-shaped studs extend to the interior of the mounting holes, and the top of the inclined plate and the discharge port are rotatably connected by hinges.

[0010] Preferably, a cross frame is fixedly provided on the top of the discharge port, and both ends of the cross frame are fixedly connected to the outer wall of the arc-shaped plate.

[0011] Preferably, the inclined plate is provided with a clearing piece for clearing smaller grinding stones blocked in the triangular holes during screening, and the clearing piece includes a mounting plate, a plurality of sets of horizontal plates are fixedly provided on the surface of the mounting plate, a plurality of sets of vertical columns are fixedly provided on the surface of the horizontal plate, a conical head is provided at the end of the vertical column, a hydraulic rod is also provided on the surface of the mounting plate, and the hydraulic rod is fixed on the surface of the inclined plate.

[0012] Preferably, a threaded opening is formed at the end of the hydraulic rod, a locking stud is fixedly provided on the conical head, and the end of the locking stud extends to the inside of the threaded opening.

[0013] Preferably, a disassembly component for disassembling and assembling the arc baffle is provided between the arc baffle and the vibration disk, the disassembly component includes a connecting frame installed on the front and back of the discharge port, the inner wall of the vibration disk is provided with two groups of grooves, the interior of the grooves is fixedly provided with fixing studs, the exterior of the fixing studs is threadedly connected with a nut ring, and the connecting frame is located between the arc baffle and the nut ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention has a screening mechanism designed so that when the volume and weight of some grinding stones in the vibration plate become smaller after a long period of grinding during the grinding process, the shielding plate on the surface of the inclined plate is moved upward or downward according to the particle size of the grinding stones to be screened out, so that the shielding plate can block a part of the size of the triangular hole, and the size of the triangular hole can be adjusted. Then, the grinding stones can enter the discharge port under the vibration of the vibration plate. At this time, the grinding stones larger than the size of the triangular hole will remain in the vibration plate and can be reused, while the grinding stones smaller than the size of the triangular hole will be discharged outward from the triangular hole. The smaller grinding stones can be screened and discharged, and there is no need to replace the grinding stones of different sizes in the vibration plate as a whole, thereby reducing the replacement cost.

[0016] (2) The present invention is designed with a rotating part. When the grinding stones in the vibration plate need to be discharged as a whole during equipment maintenance or other operations, the inclined plate can be flipped open by the rotating part so that the grinding stones in the vibration plate can be discharged. After closing the inclined plate, grinding stones of different particle sizes in the vibration plate can be screened, thereby increasing the applicability of the inclined plate for use in different situations.

[0017] (3) The cleaning piece designed in the present invention can clear the blocked grinding stones when some grinding stones enter the discharge port or pass through the triangular hole during use through the columns and conical heads on the cleaning piece. The blocked grinding stones can then be cleared by entering the triangular hole or the discharge port, thereby improving the effect of the grinding stone screening process.

[0018] (3) The present invention is designed with disassembly parts, through which the arc-shaped baffle can be opened or closed, so that the ground stone can enter the discharge port during the screening process. When in use, the ground stone can be blocked by the arc-shaped baffle to prevent it from entering the discharge port, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the vibration plate of the present invention when viewed from the left and upward;

[0021] Figure 3 It is a schematic diagram of the inclined plate and triangular hole structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the arc plate and the disc of the present invention;

[0023] Figure 5 It is a schematic diagram of the F-shaped frame and the lower plate structure of the present invention;

[0024] Figure 6 It is a rear view structural schematic diagram of the F-shaped frame of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the vibration plate of the present invention;

[0026] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of the middle part A;

[0027] Fig. 9 It is a schematic diagram of the cross-sectional structure of the discharge port and the arc-shaped baffle of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the dredging piece of the present invention;

[0029] Fig.11 It is a schematic diagram of the cross-sectional structure of a column of the present invention;

[0030] In the figure: 100, vibrating plate; 101, vibrator; 102, shock absorbing spring; 103, base; 104, discharge port; 105, arc baffle; 200, inclined plate; 201, shield plate; 202, triangular hole; 203, lower plate; 204, L-shaped connecting rod; 205, nut seat; 206, F-shaped frame; 207, connecting motor; 208, long slot; 209, moving plate; 210, locking screw; 211, Screw rod; 212, limit rod; 213, short column; 300, mounting plate; 301, hydraulic rod; 302, column; 303, conical head; 304, cross plate; 305, screw mouth; 306, locking stud; 400, cross frame; 401, T-shaped stud; 402, arc plate; 403, mounting hole; 404, disc; 500, connecting frame; 501, nut ring; 502, groove; 503, fixing stud. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1-Figure 6The present invention provides a technical solution: a production device for automobile spring disks, comprising a base 103, a vibration disk 100 and a vibrator 101 installed inside the vibration disk 100, the vibration disk 100 can be vibrated by the vibrator 101, a plurality of groups of shock absorbing springs 102 are fixedly arranged between the bottom of the vibration disk 100 and the base 103, the vibration disk 100 can be damped by the shock absorbing springs 102, a discharge port 104 is fixedly arranged on the vibration disk 100, an arc-shaped baffle 105 is arranged at one end of the discharge port 104, and a screening mechanism is arranged on the discharge port 104;

[0034] The screening mechanism includes an inclined plate 200, three sets of shielding plates 201 and two sets of F-shaped frames 206. The inclined plate 200 has multiple sets of triangular holes 202, through which the grinding stones with smaller particle sizes can be screened. The shielding plates 201 are located on the surface of the inclined plate 200. The surfaces of both ends of the shielding plates 201 are fixedly provided with lower plates 203. A screw rod 211 is rotatably provided on the F-shaped frame 206. A nut seat 205 is provided outside the screw rod 211. The nut seat 205 moves on the screw rod 211 to drive the three The shield plate 201 moves, a limit rod 212 is fixedly provided on the F-shaped frame 206, and a plurality of limit rings are slidably provided outside the limit rod 212. The limit rings slide on the limit rod 212 to limit the moving shield plate 201. Two sets of connecting plates are fixedly provided between the nut seat 205 and the limit ring, and a short column 213 is fixedly provided between the limit ring and the lower plate 203. A connecting motor 207 is fixedly provided on the F-shaped frame 206, and the working end of the connecting motor 207 is fixedly connected to the end of the screw rod 211.

[0035] The F-shaped frame 206 has a long slot 208 formed inside, a movable plate 209 is fixedly provided on the nut seat 205, and the end of the movable plate 209 passes through the inside of the long slot 208, and the inside of the movable plate 209 is connected with a locking screw 210 through a thread, and the movable plate 209 can be fixed by the locking screw 210 after the position of the shielding plate 201 is adjusted, and the shielding plate 201 can be indirectly fixed to avoid the accidental start-up of the connecting motor 207 during the screening process, resulting in a change in the position of the shielding plate 201, and then the size of the triangular hole 202 changes, affecting the screening effect of the grinding stone, and the working end of the locking screw 210 extends to the surface of the F-shaped frame 206;

[0036] A plurality of groups of L-shaped connecting rods 204 are fixedly disposed between the F-shaped frame 206 and the inclined plate 200 . The F-shaped frame 206 and the inclined plate 200 can be installed together through the L-shaped connecting rods 204 . The F-shaped frame 206 is located on both sides of the discharge port 104 .

[0037] The present invention adopts a screening mechanism designed so that when some grinding stones located in the vibration plate 100 become smaller in volume and weight after a long period of grinding during the grinding process, the shielding plate 201 located on the surface of the inclined plate 200 is moved upward or downward according to the particle size of the grinding stones screened out as needed, so that the shielding plate 201 can block a part of the triangular hole 202, and the size of the triangular hole 202 can be adjusted. Then, the grinding stones can enter the discharge port 104 under the vibration action of the vibration plate 100. At this time, the grinding stones larger than the size of the triangular hole 202 will remain in the vibration plate 100 and can be reused, while the grinding stones smaller than the size of the triangular hole 202 will be discharged outward from the triangular hole 202. The smaller grinding stones can be screened and discharged, and there is no need to replace the grinding stones of different sizes in the vibration plate 100 as a whole, thereby reducing the replacement cost.

[0038] During use, when screening out grinding stones with smaller particle sizes, the size of the triangular hole 202 is adjusted first. When adjusting, the connecting motor 207 is first started to rotate the working end of the connecting motor 207 to drive the screw rod 211 to rotate. At this time, the nut seat 205 located outside the screw rod 211 moves downward, driving the moving plate 209, the limiting ring, the short column 213 and the lower plate 203 to move. Then the lower plate 203 drives the three sets of shielding plates 201 to move. At this time, the shielding plate 201 can cover a part of the size of the triangular hole 202, and then the connecting motor is stopped. Machine 207, at this time, tighten the locking screw 210 on the movable plate 209 to lock and fix the movable plate 209 and the F-shaped frame 206. Under the vibration of the vibration plate 100, the grinding stones in the vibration plate 100 enter the discharge port 104, and then the grinding stones larger than the triangular hole 202 are retained in the vibration plate 100, and the grinding stones with larger particle sizes can be reused, while the grinding stones smaller than the triangular hole 202 are discharged outward from the triangular hole 202, and the smaller grinding stones are screened and discharged.

[0039] Example 2

[0040] Based on Example 1, please refer to Figure 1-Figure 4, two groups of rotating parts for opening or closing the inclined plate 200 are arranged between the top of the inclined plate 200 and the discharge port 104, and the rotating parts include discs 404 fixed on both sides of the top of the inclined plate 200 and arc-shaped plates 402 located outside the discs 404. When the inclined plate 200 is turned over, the discs 404 will rotate in the arc-shaped plates 402, and the outer wall of the discs 404 is evenly provided with multiple groups of mounting holes 403 along the circumferential direction of the discs 404. The inside of the arc-shaped plates 402 is connected with T-shaped studs 401 through threads, and the discs 404 on the inclined plate 200 turned over at a good angle can be fixed to the arc-shaped plates 402 through the T-shaped studs 401, and the working ends of the T-shaped studs 401 extend to the inside of the mounting holes 403, and the top of the inclined plate 200 and the discharge port 104 are rotatably connected through hinges;

[0041] A cross frame 400 is fixedly disposed on the top of the discharge port 104 , and both ends of the cross frame 400 are fixedly connected to the outer wall of the arc plate 402 .

[0042] The present invention is designed with a rotating part. When the grinding stones in the vibration plate 100 need to be discharged as a whole during equipment maintenance or other operations, the inclined plate 200 can be flipped open by the rotating part, so that the grinding stones in the vibration plate 100 can be discharged. After closing the inclined plate 200, grinding stones of different particle sizes in the vibration plate 100 can be screened, thereby increasing the applicability of the inclined plate 200 for use in different situations.

[0043] When the grinding stone in the vibration plate 100 needs to be taken out as a whole for maintenance or other operations on the equipment, the T-shaped stud 401 on the rotating part is rotated outward to loosen it, and then the working end of the T-shaped stud 401 is disengaged from the mounting hole 403 in the disc 404. At this time, the inclined plate 200 is flipped outward around the hinge to a certain angle to open the inclined plate 200, so that the corresponding mounting hole 403 is aligned with the working end of the T-shaped stud 401, and then the T-shaped stud 401 is rotated and tightened in the direction close to the arc plate 402, and then the working end of the T-shaped stud 401 enters the mounting hole 403 to lock the disc 404, and then the grinding stone in the vibration plate 100 can be completely discharged from the discharge port 104. When the discharge is completed, the inclined plate 200 can be closed according to the opposite principle. Opening the inclined plate 200 can discharge the grinding stone in the vibration plate 100, and closing the inclined plate 200 can screen the grinding stone in the vibration plate 100.

[0044] Example 3

[0045] Based on Example 2, please refer to Figure 1 , Figure 2 , Fig.10 and Fig.11The inclined plate 200 is provided with a dredging member for dredging smaller grinding stones blocked in the triangular hole 202 during screening. The dredging member includes a mounting plate 300. A plurality of transverse plates 304 are fixedly provided on the surface of the mounting plate 300. A plurality of vertical columns 302 are fixedly provided on the surface of the horizontal plate 304. A conical head 303 is provided at the end of the vertical column 302. The grinding stones blocked in the triangular hole 202 and the discharge port 104 can be dredged through the conical head 303 and the vertical column 302. A hydraulic rod 301 is also provided on the surface of the mounting plate 300, and the hydraulic rod 301 is fixed on the surface of the inclined plate 200.

[0046] A threaded opening 305 is provided at the end of the hydraulic rod 301 , and a locking stud 306 is fixedly provided on the conical head 303 . The conical head 303 which is seriously worn can be replaced through the threaded opening 305 and the locking stud 306 , and the end of the locking stud 306 extends into the inside of the threaded opening 305 .

[0047] The cleaning piece designed in the present invention can clear the blocked grinding stones when some grinding stones enter the discharge port 104 or pass through the triangular hole 202 during use, through the column 302 and the conical head 303 on the cleaning piece, into the triangular hole 202 or the discharge port 104, thereby improving the effect of the grinding stone screening process.

[0048] In use, when some grinding stones enter the discharge port 104 and become blocked or pass through the triangular hole 202 and become blocked, the hydraulic rod 301 on the mounting plate 300 is started, and the working end of the hydraulic rod 301 moves toward the inclined plate 200, driving the mounting plate 300 to move, and then the mounting plate 300 drives the cross plate 304, the column 302 and the conical head 303 to move toward the triangular hole 202, and then the ends of the conical head 303 and the column 302 penetrate into the triangular hole 202 to clear the blockage in the triangular hole 202. The grinding stone is unblocked, and at the same time, the column 302 and the conical head 303 continue to move into the discharge port 104 to unblock the grinding stone blocked in the discharge port 104, thereby improving the effect in the process of screening the grinding stone. When the conical head 303 is worn after long-term use, the conical head 303 is rotated outward to drive the locking stud 306 to rotate, and then it is disengaged from the inside of the screw mouth 305. Then, a new conical head 303 and locking stud 306 are taken out and installed back to the original position according to the above-mentioned reverse principle.

[0049] Example 4

[0050] Based on Example 3, please refer to Figure 7-Figure 9A disassembly and assembly part for disassembling the arc baffle 105 is arranged between the arc baffle 105 and the vibration plate 100, and the disassembly and assembly part includes a connecting frame 500 installed on the front and back sides of the discharge port 104, and the connecting frame 500 is located in the groove 502, and is clamped and fixed by a nut ring 501, so as to fix the arc baffle 105, and the inner wall of the vibration plate 100 is provided with two groups of grooves 502, and the interior of the groove 502 is fixedly provided with a fixing stud 503, and the exterior of the fixing stud 503 is connected to the nut ring 501 by a thread, and the connecting frame 500 is located between the arc baffle 105 and the nut ring 501.

[0051] The present invention is designed with disassembly parts, through which the arc baffle 105 can be opened or closed, which facilitates the ground stone to enter the discharge port 104 during the screening process. When in use, the ground stone is blocked by the arc baffle 105 to avoid entering the discharge port 104, which is convenient for use.

[0052] During use, when screening or discharging the grinding stone in the vibration plate 100, the nut ring 501 is turned outward to be unscrewed and taken out. At this time, the nut ring 501 will no longer clamp the connecting frame 500 on the arc baffle 105, and then the arc baffle 105 can be taken outward. At this time, the grinding stone in the vibration plate 100 will enter the discharge port 104 to be discharged outward or screened, avoiding the grinding stone from entering the discharge port 104.

[0053] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A production device for automobile spring disks, comprising a base (103), a vibration disk (100) and a vibrator (101) installed inside the vibration disk (100), a plurality of groups of damping springs (102) are fixedly arranged between the bottom of the vibration disk (100) and the base (103), a discharge port (104) is fixedly arranged on the vibration disk (100), and an arc-shaped baffle (105) is arranged at one end of the discharge port (104), characterized in that: The discharge port (104) is provided with a screening mechanism; The screening mechanism comprises an inclined plate (200), three groups of shielding plates (201) and two groups of F-shaped frames (206); a plurality of triangular holes (202) are provided inside the inclined plate (200); the shielding plates (201) are located on the surface of the inclined plate (200); lower plates (203) are fixedly provided on both end surfaces of the shielding plates (201); a screw rod (211) is rotatably provided on the F-shaped frame (206); a nut seat (205) is provided outside the screw rod (211); A limit rod (212) is fixedly arranged on the F-shaped frame (206), and a plurality of limit rings are slidably arranged outside the limit rod (212). Two sets of connecting plates are fixedly arranged between the nut seat (205) and the limit ring, and a short column (213) is fixedly arranged between the limit ring and the lower plate (203). A connecting motor (207) is fixedly arranged on the F-shaped frame (206), and a working end of the connecting motor (207) is fixedly connected to the end of the screw rod (211).

2. The automobile spring disk production device according to claim 1, characterized in that: The F-shaped frame (206) is provided with a long slot (208) inside, a movable plate (209) is fixedly arranged on the nut seat (205), and the end of the movable plate (209) passes through the inside of the long slot (208), the inside of the movable plate (209) is connected with a locking screw (210) through a thread, and the working end of the locking screw (210) extends to the surface of the F-shaped frame (206).

3. The automobile spring disk production device according to claim 1, characterized in that: A plurality of groups of L-shaped connecting rods (204) are fixedly arranged between the F-shaped frame (206) and the inclined plate (200), and the F-shaped frame (206) is located on both sides of the discharge port (104).

4. The automobile spring disk production device according to claim 1, characterized in that: Two groups of rotating parts for opening or closing the inclined plate (200) are arranged between the top of the inclined plate (200) and the discharge port (104), and the rotating parts include a disc (404) fixed on both sides of the top of the inclined plate (200) and an arc plate (402) located outside the disc (404), and the outer wall of the disc (404) is evenly provided with multiple groups of mounting holes (403) along the circumferential direction of the disc (404), the interior of the arc plate (402 is connected with a T-shaped stud (401) by threading, and the working end of the T-shaped stud (401) extends to the interior of the mounting hole (403), and the top of the inclined plate (200) and the discharge port (104) are rotatably connected by a hinge.

5. The automobile spring disk production device according to claim 4, characterized in that: A cross frame (400) is fixedly arranged on the top of the discharge port (104), and both ends of the cross frame (400) are fixedly connected to the outer wall of the arc-shaped plate (402).

6. The automobile spring disk production device according to claim 1, characterized in that: The inclined plate (200) is provided with a clearing piece for clearing smaller grinding stones blocked in the triangular hole (202) during screening, and the clearing piece includes a mounting plate (300), a plurality of sets of horizontal plates (304) are fixedly provided on the surface of the mounting plate (300), a plurality of sets of vertical columns (302) are fixedly provided on the surface of the horizontal plate (304), a conical head (303) is provided at the end of the vertical column (302), a hydraulic rod (301) is also provided on the surface of the mounting plate (300), and the hydraulic rod (301) is fixed on the surface of the inclined plate (200).

7. The automobile spring disk production device according to claim 6, characterized in that: A screw hole (305) is provided at the end of the hydraulic rod (301), a locking stud (306) is fixedly provided on the conical head (303), and the end of the locking stud (306) extends to the inside of the screw hole (305).

8. The automobile spring disk production device according to claim 1, characterized in that: A disassembly component for disassembling and assembling the arc-shaped baffle (105) is arranged between the arc-shaped baffle (105) and the vibration plate (100), and the disassembly component includes a connecting frame (500) installed on the front and back sides of the discharge port (104); the inner wall of the vibration plate (100) is provided with two groups of grooves (502); the interior of the grooves (502) is fixedly provided with fixing studs (503); the exterior of the fixing studs 503 (503) is connected to a nut ring (501) by threading; and the connecting frame (500) is located between the arc-shaped baffle (105) and the nut ring (501).

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