Damp-proof spraying device for inner cavity of violin resonator

Abstract

The invention discloses a violin resonator inner cavity damp-proof spraying device which comprises a spraying supporting device and further comprises a lockrand fixing device, the lockrand fixing device is arranged in the spraying supporting device and comprises a supporting bottom frame, a gland frame and a violin panel, the violin panel comprises a panel body and a back plate, and the panel body is arranged on the back plate. A supporting frame is fixedly installed at the top end of the supporting bottom frame, a supporting template is fixedly installed on the inner side of the top end of the supporting frame, a positioning groove is formed in the middle of the top end of the supporting template, and an obstacle avoiding groove is formed in the position, located in the positioning groove, of the middle of the top end of the supporting template in a penetrating mode. According to the invention, a panel or a back plate of the violin is fixedly overlocked through the pressing edge locking frame in the overlock fixing device, and a bonding part is shielded, so that the moistureproof paint is only sprayed on an inner cavity part of the panel or the back plate of the violin in the process of spraying the moistureproof paint, and the bonding between the panel or the back plate and a side plate is not influenced.

Description

Technical Field

[0001] The present invention relates to the field of violin manufacturing, and specifically to a moisture-proof spraying device for the inner cavity of a violin resonance box. Background Technique

[0002] The violin is a bowed string instrument and is known as the queen of musical instruments. It has a unique timbre and rich expressiveness and is one of the most important instruments in the string section of a modern orchestra. The violin is relatively small, with a body length of about 35.5 cm, and is composed of a curved front panel, back panel, and side panels glued together. Generally, the inner cavity of the violin resonance box does not need to be moisture-proof treated. However, for violins used in some areas with high air humidity all year round, special moisture-proof treatment is required to increase the service life of the violin.

[0003] The moisture-proof treatment of the inner cavity of the violin resonance box is divided into finished product spraying and semi-finished product spraying. For finished product spraying, moisture-proof paint is sprayed into the inner cavity of the resonance box through the f-holes. However, due to the small size of the f-holes, spraying is inconvenient and the effect of uniform spraying cannot be achieved. For semi-finished product spraying, it is carried out before the front panel, back panel, and side panels are glued together. Since the front panel, back panel, and side panels are glued together with glue, the traditional spraying method will completely cover the inner sides of the front panel and back panel. Subsequently, after the paint surface dries, the moisture-proof paint at the glued parts of the front panel and back panel needs to be scraped off before bonding with the side panels, otherwise the bonding will not be firm and is likely to fall off. And during the scraping process, the flatness of the paint surface will be damaged, thus affecting the moisture-proof effect. Therefore, there is an urgent need for a moisture-proof spraying device for the inner cavity of a violin resonance box to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a moisture-proof spraying device for the inner cavity of a violin resonance box to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A moisture-proof spraying device for the inner cavity of a violin resonance box, including a spraying support device, and further including a edge-locking and fixing device. The edge-locking and fixing device is arranged inside the spraying support device. The edge-locking and fixing device includes a support bottom frame, a pressing cover frame, and a violin front panel. The violin front panel includes a front panel and a back panel. The top of the support bottom frame is fixedly installed with a support frame. The inner top of the support frame is fixedly installed with a support template. A positioning groove is opened in the middle of the top of the support template. An obstacle avoidance groove is penetrated through the middle of the top of the support template inside the positioning groove. A rubber pad is fixedly pasted inside the positioning groove;

[0006] One end of the gland frame is fixedly installed with a fixed connecting rod. An insertion slot is provided inside the gland frame. The end of the fixed connecting rod close to the gland frame is provided with a slot identical to the insertion slot. The middle of the end of the fixed connecting rod away from the gland frame is rotatably connected with a threaded rod. A locking nut is threadedly connected to the threaded end of the threaded rod. A lower pressing template is movably inserted into the insertion slot. A spraying hole is penetratingly provided in the middle of the lower pressing template. A lower pressing lock frame is fixedly connected inside the spraying hole. A masking tape is fixedly pasted inside the lower pressing lock frame. One end of the gland frame away from the fixed connecting rod is rotatably connected with a support rod through a hinge shaft.

[0007] Preferably, the support rod is fixedly installed at the top end of the support frame. The top end of the support rod is flush with the top end of the gland frame, and the bottom end of the support rod is lower than the bottom end of the gland frame.

[0008] Preferably, an insertion slot is provided in the middle of one end of the support frame. The threaded end of the threaded rod is movably clamped inside the insertion slot. A material discharging hole is penetratingly provided at one end of the support template close to the insertion slot.

[0009] Preferably, the spraying support device includes a paint spraying machine, a support bottom plate and a sliding frame. The paint spraying machine is arranged at one end of the support bottom plate. A feeding hose is fixedly installed at the output end of the paint spraying machine. Four support rods are fixedly connected to the top end of the support bottom plate in a uniformly symmetric manner. A limiting slide rod is fixedly installed on two support rods on the same side. A gear guide rail is fixedly connected below the limiting slide rod on two support rods on the same side. A leakage receiving tray is fixedly installed between the two gear guide rails. The leakage receiving tray is located at one end of the gear guide rail close to the paint spraying machine.

[0010] Preferably, sliding blocks are respectively fixedly connected to both ends of the sliding frame. A spraying pipe is fixedly installed inside the top end of the sliding frame. Two atomizing nozzles are symmetrically and fixedly installed at the bottom end of the spraying pipe. Limiting insertion holes are uniformly penetratingly provided inside the sliding frame. The nozzle end of the atomizing nozzle passes through the limiting insertion hole and is located below the sliding frame. A servo motor is fixedly installed in the middle of one side of the sliding frame. A second bevel gear is rotatably installed in the middle of one side of the sliding frame close to the servo motor. The top end of the second bevel gear is fixedly installed at the driving end of the servo motor. A rotating shaft is rotatably installed in the middle of one side of the sliding frame close to the servo motor. Gears are respectively fixedly installed at both ends of the rotating shaft. A first bevel gear is fixedly installed on one side of the middle of the rotating shaft. The first bevel gear is meshed and connected with the second bevel gear.

[0011] Preferably, the sliding block is slidably connected to the limiting slide bar. The top end of the gear guide rail is evenly provided with gear teeth, and the gear is meshed and connected to the gear guide rail through the gear teeth at the top end of the gear guide rail. One end of the spraying pipe away from the atomizing nozzle is fixedly installed at one end of the feeding hose away from the paint spraying machine.

[0012] Preferably, the support frame is fixedly installed in the middle of the top end of the support bottom plate.

[0013] Preferably, the violin panel is placed inside the positioning groove. The outer bottom end of the violin panel is in contact connection with the top end of the rubber pad. The downwardly convex part at the bottom end of the violin panel is located inside the obstacle avoidance groove. The outer top end of the violin panel is in contact connection with the bottom end of the pressing lock border.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] In the present invention, the pressing lock border in the edge locking and fixing device fixes and locks the edge of the violin panel or back plate, covering the bonding part, so as to achieve that only the inner cavity part of the violin panel or back plate is sprayed during the spraying of the moisture-proof paint, without affecting the bonding between the panel or back plate and the side plate, and there is no need to scrape the paint surface, maintaining the flatness of the paint surface, thus ensuring the moisture-proof effect. And by pasting replaceable masking tape on the inner side of the pressing lock border, it is used to isolate the direct spraying of the moisture-proof paint on the inner side of the pressing lock border and affect the spraying effect. The support template and the pressing template in the edge locking and fixing device are both of replaceable design and can be applicable to the spraying operation of the inner cavity of violins of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic three-dimensional structure diagram of the main body of the present invention;

[0017] Figure 2 is a schematic diagram of the second state structure of the main body in the present invention;

[0018] Figure 3 is a schematic diagram of the spraying support device structure in the present invention;

[0019] Figure 4 is a schematic diagram of a partial structure of the sliding frame in the present invention;

[0020] Figure 5 is a schematic diagram of the edge locking and fixing device structure in the present invention;

[0021] Figure 6 is a schematic diagram of the internal structure of the edge locking and fixing device in the present invention;

[0022] Figure 7 is a schematic diagram of a partial split structure of the gland frame in the present invention.

[0023] In the figure: 1 - spraying support device, 2 - edge-locking fixing device, 3 - paint spraying machine, 4 - support bottom plate, 5 - support rod, 6 - limit slide bar, 7 - gear guide rail, 8 - leakage receiving tray, 9 - sliding frame, 10 - material conveying hose, 11 - spraying pipe, 12 - atomizing nozzle, 13 - servo motor, 14 - limit jack, 15 - rotating shaft, 16 - gear, 17 - first bevel gear, 18 - second bevel gear, 19 - sliding block, 20 - support chassis, 21 - support frame, 22 - gland frame, 23 - insertion slot, 24 - support template, 25 - positioning slot, 26 - obstacle avoidance slot, 27 - blanking hole, 28 - rubber pad, 29 - violin panel, 30 - fixed connecting rod, 31 - threaded rod, 32 - locking nut, 33 - insertion card slot, 34 - pressing down template, 35 - spraying groove hole, 36 - pressing down edge-locking frame, 37 - masking tape, 38 - support rod. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1 、 Figure 2 、 Figures 5 - 7 , an embodiment provided by the present invention: a moisture-proof spraying device for the inner cavity of a violin resonance box, including a spraying support device 1, and further including an edge-locking fixing device 2. The edge-locking fixing device 2 is arranged inside the spraying support device 1. The edge-locking fixing device 2 includes a support chassis 20, a gland frame 22 and a violin panel 29. The violin panel 29 includes a panel and a back plate. The top end of the support chassis 20 is fixedly installed with a support frame 21. The inner side of the top end of the support frame 21 is fixedly installed with a support template 24. A positioning slot 25 is opened in the middle of the top end of the support template 24. The violin panel 29 is placed inside the positioning slot 25, and the violin panel 29 is positioned through the positioning slot 25. An obstacle avoidance slot 26 is penetrated through the middle of the top end of the support template 24 inside the positioning slot 25. The downwardly protruding part of the bottom end of the violin panel 29 is located inside the obstacle avoidance slot 26. The bottom end of the violin panel 29 is the outer side of the violin, and both sides of the violin have a convex arc outward. By opening the obstacle avoidance slot 26, the protruding part of the violin panel 29 can be made to be suspended in the air, avoiding extrusion deformation or damage. A rubber pad 28 is fixedly pasted inside the positioning slot 25, and the outer side of the bottom end of the violin panel 29 is in contact connection with the top end of the rubber pad 28;

[0026] One end of the gland frame 22 is fixedly installed with a fixed connecting rod 30. An insertion slot 33 is provided inside the gland frame 22. A slot identical to the insertion slot 33 is provided at one end of the fixed connecting rod 30 close to the gland frame 22. The middle of the end of the fixed connecting rod 30 away from the gland frame 22 is rotatably connected with a threaded rod 31. A locking nut 32 is threadedly connected to the threaded end of the threaded rod 31. A lower pressing template 34 is movably inserted inside the insertion slot 33. When replacing or installing the lower pressing template 34, first remove the fixed connecting rod 30 and insert the lower pressing template 34 of the corresponding size inside the insertion slot 33, and then install the fixed connecting rod 30 on the gland frame 22 through bolts. At this time, one end of the lower pressing template 34 close to the fixed connecting rod 30 is inserted into the slot provided on the fixed connecting rod 30, thereby fixing the lower pressing template 34. A spraying hole 35 is provided through the middle of the lower pressing template 34. A lower pressing lock frame 36 is fixedly connected inside the spraying hole 35. When the gland frame 22 is placed horizontally, the bottom end of the lower pressing lock frame 36 is lower than the top end of the support template 24. The inner area of the lower pressing lock frame 36 is the spraying area. A masking tape 37 is fixedly pasted inside the lower pressing lock frame 36. Since the lower pressing template 34 is frequently used, long-term spraying will cause a relatively thick moisture-proof paint layer to adhere to the inside of the lower pressing lock frame 36. By pasting the masking tape 37, the moisture-proof paint is prevented from being directly sprayed inside the lower pressing lock frame 36. When too much moisture-proof paint adheres to the masking tape 37 and affects the product quality, only need to remove the masking tape 37 and replace it with a new one. One end of the gland frame 22 away from the fixed connecting rod 30 is rotatably connected with a support rod 38 through a hinge shaft. The outer side of the top end of the violin panel 29 is in contact connection with the bottom end of the lower pressing lock frame 36. When fixing the violin panel 29, rotate the gland frame 22 close to the violin panel 29. The rotation of the gland frame 22 drives the lower pressing template 34 and the lower pressing lock frame 36 to rotate. When the bottom end of the lower pressing lock frame 36 close to the support rod 38 touches the top end of the violin panel 29, the bottom end of the lower pressing lock frame 36 squeezes the violin panel 29 to move downward and squeezes the rubber pad 28 at the bottom end of the violin panel 29 until the bottom end of the lower pressing lock frame 36 is completely closely attached to the top end of the violin panel 29. At this time, the violin panel 29 is squeezed and fixed.

[0027] The support rod 38 is fixedly installed at the top of the support frame 21. The top of the support rod 38 is flush with the top of the gland frame 22, and the bottom of the support rod 38 is lower than the bottom of the gland frame 22. A socket groove 23 is provided in the middle of one end of the support frame 21. The threaded end of the threaded rod 31 is movably clamped inside the socket groove 23. When the threaded rod 31 is rotated and inserted inside the socket groove 23, the locking nut 32 is rotated upward until the top of the locking nut 32 abuts against the bottom end of the support frame 21 near the socket groove 23, thereby locking the gland frame 22. A material discharging hole 27 is provided through one end of the support template 24 near the socket groove 23. Through the provided material discharging hole 27, the bottom end of one end of the violin panel 29 near the socket groove 23 is in an overhead state, which is convenient for lifting and taking out the violin panel 29 after spraying. Both the support template 24 and the lower pressing template 34 are of a replaceable design, which is convenient for spraying operations on violin panels 29 of different sizes.

[0028] Refer to Figure 3 and Figure 4 , the spraying support device 1 includes a paint spraying machine 3, a support base plate 4 and a sliding frame 9. The paint spraying machine 3 is arranged at one end of the support base plate 4. The support frame 21 is fixedly installed in the middle of the top of the support base plate 4. A material conveying hose 10 is fixedly installed at the output end of the paint spraying machine 3. Four support rods 5 are fixedly connected symmetrically and evenly at the top of the support base plate 4. A limiting slide rod 6 is fixedly installed on two support rods 5 on the same side. A gear guide rail 7 is fixedly connected below the limiting slide rod 6 on two support rods 5 on the same side. A leakage receiving tray 8 is fixedly installed between the two gear guide rails 7. The leakage receiving tray 8 is located at one end of the gear guide rail 7 close to the paint spraying machine 3. Sliding blocks 19 are respectively fixedly connected to both ends of the sliding frame 9. A spraying pipe 11 is fixedly installed inside the top of the sliding frame 9. Two atomizing nozzles 12 are symmetrically fixedly installed at the bottom end of the spraying pipe 11. Limiting insertion holes 14 are evenly provided through the inside of the sliding frame 9. The nozzle end of the atomizing nozzle 12 passes through the limiting insertion hole 14 and is located below the sliding frame 9. The atomizing nozzle 12 is limited by the limiting insertion hole 14 to prevent the atomizing nozzle 12 from rotating due to excessive pressure during spraying, which affects the spraying effect. A servo motor 13 is fixedly installed in the middle of one side of the sliding frame 9. A second bevel gear 18 is rotatably installed in the middle of one side of the sliding frame 9 close to the servo motor 13. The top of the second bevel gear 18 is fixedly installed at the driving end of the servo motor 13. A rotating shaft 15 is rotatably installed in the middle of one side of the sliding frame 9 close to the servo motor 13. Gears 16 are respectively fixedly installed at both ends of the rotating shaft 15. A first bevel gear 17 is fixedly installed on one side of the middle of the rotating shaft 15. The first bevel gear 17 is meshed and connected with the second bevel gear 18. The driving end of the servo motor 13 drives the second bevel gear 18 to rotate. The rotation of the second bevel gear 18 drives the first bevel gear 17 to rotate, thereby driving the rotating shaft 15 to rotate. The rotation of the rotating shaft 15 drives the two gears 16 to rotate synchronously, thereby achieving the effect of reciprocating and evenly spraying the moisture-proof paint.

[0029] The sliding block 19 is slidably connected to the limiting slide bar 6. The top end of the gear guide rail 7 is evenly provided with gear teeth. The gear 16 is meshed and connected to the gear guide rail 7 through the gear teeth at the top end of the gear guide rail 7. The two rotating gears 16 move synchronously at the top ends of the gear guide rails 7 on both sides respectively, thereby driving the two sliding blocks 19 to slide on the two limiting slide bars 6 respectively. By sliding the sliding block 19 on the limiting slide bar 6, a limit is imposed on the movement of the gear 16, so that it remains moving at the top end of the gear guide rail 7. One end of the spraying pipe 11 away from the atomizing nozzle 12 is fixedly installed at one end of the feeding hose 10 away from the paint spraying machine 3.

[0030] Working principle: During use, first install the corresponding support template 24 and the pressing template 34 according to the size of the violin panel 29 for which the moisture-proof paint surface needs to be sprayed. Install the support template 24 of the corresponding size inside the support frame 21. Then, remove the fixed connecting rod 30 by external force and insert the pressing template 34 of the corresponding size inside the insertion slot 33. Then, install the fixed connecting rod 30 on the gland frame 22 by bolts to fix the pressing template 34. Then, paste a circle of masking tape 37 inside the lower pressing lock frame 36. After installation, place the violin panel 29 inside the positioning slot 25, and the outer bottom end of the violin panel 29 is located at the top end of the rubber pad 28. Then, rotate the gland frame 22 close to the violin panel 29 by external force. The rotation of the gland frame 22 drives the pressing template 34 to rotate, thereby driving the lower pressing lock frame 36 to rotate. When the end of the lower pressing lock frame 36 close to the support rod 38 at the bottom touches the top end of the violin panel 29, the bottom end of the lower pressing lock frame 36 squeezes the violin panel 29 to move downward, squeezing the rubber pad 28 at the bottom end of the violin panel 29 until the bottom end of the lower pressing lock frame 36 is completely close to the top end of the violin panel 29. At this time, rotate the threaded rod 31 close to the insertion slot 23 by external force until the threaded rod 31 is inserted inside the insertion slot 23. Then, rotate the locking nut 32 upward by external force to be close to the bottom end of the support frame 21 close to the insertion slot 23 until the top end of the locking nut 32 is close to the bottom end of the support frame 21. At this time, the outer part of the top end of the violin panel 29 is squeezed and blocked by the lower pressing lock frame 36. Then, the spraying operation can be started;

[0031] Start the paint spraying machine 3 and the servo motor 13 to start the spraying operation. The paint spraying machine 3 transports the moisture-proof paint to the spraying pipe 11 through the material conveying hose 10. The spraying pipe 11 sprays the moisture-proof paint downward through the atomizing nozzle 12. The driving end of the servo motor 13 drives the second bevel gear 18 to rotate. Since the first bevel gear 17 and the second bevel gear 18 are meshed and connected, and the gear 16 is meshed and connected with the gear guide rail 7 through the gear teeth at the top of the gear guide rail 7, the rotation of the second bevel gear 18 drives the first bevel gear 17 to rotate. The rotating first bevel gear 17 drives the rotating shaft 15 to rotate. The rotation of the rotating shaft 15 drives the gears 16 at both ends to rotate synchronously. The rotating gears 16 move on the top of the gear guide rail 7 through the gear teeth at the top of the gear guide rail 7, thereby driving the sliding frame 9 to slide on the limit slide rod 6 through the sliding block 19. The movement of the sliding frame 9 drives the spraying pipe 11 and the atomizing nozzle 12 to move, so as to spray the moisture-proof paint on the top of the violin panel 29 located below. When the sliding frame 9 moves to one end of the limit slide rod 6 away from the paint spraying machine 3, control the servo motor 13 to reverse to drive the sliding frame 9 to move in the reverse direction, and so on to spray the moisture-proof paint on the top of the violin panel 29. When the spraying of the moisture-proof paint is completed, drive the sliding frame 9 to move to the top of the leakage receiving tray 8 through the servo motor 13, and turn off the paint spraying machine 3 and the servo motor 13. At this time, the moisture-proof paint remaining at the nozzle end of the atomizing nozzle 12 drips into the interior of the leakage receiving tray 8;

[0032] After the spraying operation is completed, remove the violin panel 29. Manually turn the locking nut 32 downward to move away from the insertion slot 23, and turn the threaded rod 31 upward to disengage from the inside of the insertion slot 23. Then turn the pressing cover frame 22 upward until the top of the pressing cover frame 22 touches the side of the leakage receiving tray 8. Then drag the violin panel 29 upward through the material discharging hole 27, take out the violin panel 29 from the inside of the positioning slot 25 and place it in the drying area for the next process. Since the outer side of the top of the violin panel 29 is squeezed by the downward pressing lock frame 36, the outer side of the top of the violin panel 29 is blocked during the spraying process, and the moisture-proof paint cannot be sprayed on the outer side of the top of the violin panel 29. Then place a new violin panel 29 inside the positioning slot 25 to continue a new round of spraying operation.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A moisture-proof spraying device for the inner cavity of a violin resonance box, comprising a spraying support device (1), characterized in that: It also includes a locking edge fixing device (2), the locking edge fixing device (2) is arranged inside the spraying support device (1), the locking edge fixing device (2) includes a supporting base frame (20), a pressure cover frame (22) and a violin panel (29), the violin panel (29) includes a panel and a back panel, a supporting frame (21) is fixedly installed at the top of the supporting base frame (20), a supporting template (24) is fixedly installed on the inner side of the top of the supporting frame (21), a positioning groove (25) is opened in the middle of the top of the supporting template (24), an obstacle avoidance groove (26) is opened in the middle of the top of the supporting template (24) and is located inside the positioning groove (25), and a rubber pad (28) is fixedly attached to the inner side of the positioning groove (25); A fixed connecting rod (30) is fixedly installed at one end of the gland frame (22), a plug-in card slot (33) is provided on the inner side of the gland frame (22), a card slot identical to the plug-in card slot (33) is provided at one end of the fixed connecting rod (30) close to the gland frame (22), a threaded rod (31) is rotatably connected to the middle of one end of the fixed connecting rod (30) away from the gland frame (22), and a locking nut is threadedly connected to the threaded end of the threaded rod (31) (32), a pressing template (34) is movably inserted into the inner side of the plug-in slot (33), a spraying slot hole (35) is penetrated through the middle of the pressing template (34), a pressing lock frame (36) is fixedly connected to the inner side of the spraying slot hole (35), a masking tape (37) is fixedly attached to the inner side of the pressing lock frame (36), and one end of the pressing cover frame (22) away from the fixed connecting rod (30) is rotatably connected to a support rod (38) through a hinge shaft.

2. A moisture-proof spraying device for the inner cavity of a violin resonance box according to claim 1, characterized in that: The support rod (38) is fixedly mounted on the top of the support frame (21), the top of the support rod (38) is flush with the top of the pressure cover frame (22), and the bottom of the support rod (38) is lower than the bottom of the pressure cover frame (22).

3. A moisture-proof spraying device for the inner cavity of a violin resonance box according to claim 2, characterized in that: A plug-in slot (23) is provided in the middle of one end of the support frame (21), the threaded end of the threaded rod (31) is movably clamped on the inner side of the plug-in slot (23), and a feed hole (27) is provided through one end of the support template (24) close to the plug-in slot (23).

4. A moisture-proof spraying device for the inner cavity of a violin resonance box according to claim 1, characterized in that: The spraying support device (1) comprises a paint sprayer (3), a support base plate (4) and a sliding frame (9), wherein the paint sprayer (3) is arranged at one end of the support base plate (4), a material delivery hose (10) is fixedly installed at the output end of the paint sprayer (3), four support rods (5) are evenly and symmetrically fixedly connected to the top of the support base plate (4), a limit slide bar (6) is fixedly installed on two support rods (5) located on the same side, a gear guide rail (7) is fixedly connected to the two support rods (5) located on the same side below the limit slide bar (6), a leakage plate (8) is fixedly installed between the two gear guide rails (7), and the leakage plate (8) is located at one end of the gear guide rail (7) close to the paint sprayer (3).

5. A moisture-proof spraying device for the inner cavity of a violin resonance box according to claim 4, characterized in that: The two ends of the slide frame (9) are respectively fixedly connected with sliding blocks (19); a spray pipe (11) is fixedly installed on the inner side of the top end of the slide frame (9); two atomizing nozzles (12) are symmetrically fixedly installed on the bottom end of the spray pipe (11); the inner side of the slide frame (9) is evenly penetrated with limited insertion holes (14); the nozzle end of the atomizing nozzle (12) passes through the limited insertion hole (14) and is located below the slide frame (9); a servo motor (13) is fixedly installed in the middle of one side of the slide frame (9); the slide frame (9) A second bevel gear (18) is rotatably mounted on the middle of a side close to the servo motor (13), and the top end of the second bevel gear (18) is fixedly mounted on the driving end of the servo motor (13). A rotating shaft (15) is rotatably mounted on a side of the slide frame (9) close to the servo motor (13), and gears (16) are fixedly mounted on both ends of the rotating shaft (15). A first bevel gear (17) is fixedly mounted on one side of the middle of the rotating shaft (15), and the first bevel gear (17) and the second bevel gear (18) are meshingly connected.

6. A moisture-proof spraying device for the inner cavity of a violin resonance box according to claim 5, characterized in that: The sliding block (19) is slidably connected to the limiting sliding rod (6), the top end of the gear guide rail (7) is evenly provided with gear teeth, the gear (16) is meshedly connected with the gear guide rail (7) through the gear teeth at the top end of the gear guide rail (7), and the end of the spray pipe (11) away from the atomizing nozzle (12) is fixedly installed on the end of the material delivery hose (10) away from the paint spraying machine (3).

7. The moisture-proof spraying device for the inner cavity of a violin resonance box according to claim 4, characterized in that: The support frame (21) is fixedly mounted at the middle of the top end of the support base plate (4).

8. The moisture-proof spraying device for the inner cavity of a violin resonance box according to claim 1, characterized in that: The violin panel (29) is placed on the inner side of the positioning groove (25), the outer side of the bottom end of the violin panel (29) is in contact with the top end of the rubber pad (28), the downwardly protruding portion of the bottom end of the violin panel (29) is located on the inner side of the obstacle avoidance groove (26), and the outer side of the top end of the violin panel (29) is in contact with the bottom end of the push-down lock frame (36).

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