Production device for harp resonator and production method thereof

Abstract

The production device comprises a shell, a drying groove is formed in the front side of the shell, a sealing door is installed at a groove opening of the drying groove, and a handle is installed on the sealing door; the placing mechanism comprises a rotating shaft rotationally connected between the upper inner wall and the lower inner wall of the drying groove, the placing mechanism comprises a plurality of mounting strips fixedly connected to the side wall of the rotating shaft, the other side of each mounting strip is fixedly connected with a placing plate, and a placing groove is formed in the upper end of each placing plate; a plurality of openings are formed in each placing plate in a penetrating manner; and the heating mechanism comprises a hollow disc arranged at the bottom in the shell. In the actual use process of the device, the overall drying efficiency is effectively improved, and during drying, a cyclic heating mode is adopted, so that heat energy waste is reduced, and meanwhile, water vapor generated during drying can be treated.

Description

Technical Field

[0001] The invention relates to the field of musical instrument processing, and in particular to a production device and a production method for a harp resonance box. Background Art

[0002] The resonance box of a harp is an important structural part. It is usually located at the back of the harp and is in the shape of a narrow trapezoid. The function of the resonance box is to amplify the sound produced by the vibration of the strings, increase the volume, and give the instrument a richer timbre. There are usually decorative carvings on the resonance box of the harp, and different harps may have different design styles. In some special harp designs, the shape and position of the resonance box may also be different;

[0003] In the production process of harp resonance boxes, one of the important steps is the drying of wood materials. Traditional drying devices simply put them into a drying box, resulting in poor actual drying effect. The drying process will produce water vapor. If the water vapor is not processed, it will easily affect the dried wood. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a production device for a harp resonance box. In actual use, the device effectively improves the overall drying efficiency and adopts a circulating heating method during drying, which not only reduces the waste of heat energy but also can process the water vapor generated by drying.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A production device for a harp resonance box, comprising a shell, a drying groove is provided on the front side of the shell, a sealing door is installed at the groove of the drying groove, and a handle is installed on the sealing door; a placement mechanism, the placement mechanism includes a rotating shaft rotatably connected between the upper and lower inner walls of the drying groove, the placement mechanism includes a plurality of mounting strips fixedly connected to the side wall of the rotating shaft, the other side of each of the mounting strips is fixedly connected to a placement plate, the upper end of each of the placement plates is provided with a placement groove, and each of the placement plates is penetrated by a plurality of openings; a heating mechanism, the heating mechanism includes a hollow disk arranged at the bottom of the shell, the inner top of the hollow disk is provided with a plurality of diversion holes, and the inner bottom of the hollow disk is provided with a plurality of electric heating rings; a driving mechanism, the driving mechanism is used to drive the rotating shaft to rotate; a gas flow mechanism, the gas flow mechanism cooperates with the heating mechanism.

[0007] Preferably, the driving mechanism includes a mounting frame installed on the upper end of the shell, the upper end of the rotating shaft extends to the outside, a driving motor is installed on the mounting frame, and pulleys are installed on the output shaft of the driving motor and the rotating shaft, and the two pulleys are connected by a transmission belt.

[0008] Preferably, the gas flow mechanism includes a piston cylinder fixedly connected to the upper end of the shell, a piston block that can slide left and right is arranged in the piston cylinder, the upper end of the rotating shaft is fixedly connected to a rotating disk, the eccentric point of the upper end of the rotating disk is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the left side of the piston block.

[0009] Preferably, a connecting box is fixedly connected to the right side of the shell, a columnar cavity is arranged in the connecting box, a drying cylinder is fixedly connected to the upper end of the connecting box, a drying assembly is arranged in the drying cylinder, the right side space of the piston cylinder is connected with the inner top space of the drying tank through a first one-way tube, the right side space of the piston cylinder is connected with the inner top space of the drying cylinder through a second one-way tube, the inner bottom space of the drying cylinder is connected with the columnar cavity through a first connecting port, and the middle space of the drying cylinder is connected with the interior of the hollow disk through a connecting tube.

[0010] Preferably, one-way valves are installed inside the first one-way tube and the second one-way tube. The one-way valve inside the first one-way tube flows from the top space in the drying tank to the space on the right side of the piston cylinder in one direction, and the one-way valve inside the second one-way tube flows from the space on the right side of the piston cylinder to the top space in the drying cylinder in one direction.

[0011] Preferably, an air hole is opened at the inner bottom of the columnar cavity, a piston column which can slide up and down is arranged in the columnar cavity, and the lower end of the piston column is elastically connected to the inner bottom of the columnar cavity through a spring.

[0012] Preferably, the inner top space of the columnar cavity is connected to the drying tank through a second connecting port, a normally open solenoid valve is installed inside the second connecting port, and the normally open solenoid valve and the driving motor are in the same series circuit.

[0013] Preferably, a cooling cylinder is fixedly connected to the right side of the shell, and the cooling cylinder is filled with temperature-conducting oil. The liquid level of the temperature-conducting oil is at half of the inner cavity of the cooling cylinder, and a semiconductor refrigeration component is installed on the right side wall of the cooling cylinder. The refrigeration end of the semiconductor refrigeration component extends to the interior of the cooling cylinder, and the left and right inner wall parts of the cooling cylinder are rotatably connected to a second rotating shaft, and a plurality of stirring rods are fixedly connected at equal intervals on the outside of the second rotating shaft. The inner bottom space of the cooling cylinder is connected to the interior of the connecting pipe through the second connecting pipe, and the inner top space of the cooling cylinder is connected to the interior of the connecting pipe through the first connecting pipe, and the first connecting pipe, the second connecting pipe and the connecting pipe located below the cooling cylinder are all equipped with normally closed solenoid valves.

[0014] Preferably, the left end of the second rotating shaft extends to the inside of the drying tank and is installed with a first rotating shaft, a second bevel gear is installed on the first rotating shaft, a first bevel gear is installed on the rotating shaft, and the first bevel gear is meshed with the second bevel gear.

[0015] The present invention also discloses a method for producing a harp resonance box, which adopts the above-mentioned production device and comprises the following steps:

[0016] Step 1: Use computer-aided design software to create a three-dimensional model of the resonance box;

[0017] Step 2: Select spruce or maple and put it into the production device for drying;

[0018] Step 3: Use CNC machine tools to cut and shape the wood according to the design drawings;

[0019] Step 4: Assemble the components into a complete resonance box structure by gluing and nailing;

[0020] Step 5: Surface treatment process of sanding, painting and oiling the resonance box;

[0021] Step 6: Tune and acoustically test the harp resonance box.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Through the designed linkage mechanism of driving motor, pulley, transmission belt, rotating shaft, rotating disk, connecting rod and piston block, the circulating pumping and heating of gas in the drying tank are realized, which effectively improves the drying efficiency of wood. At the same time, the heating effect of the electric heating ring is combined with the water vapor absorption function of the drying component to ensure the continuous drying of gas during the circulation process, reduce energy consumption and improve energy utilization efficiency.

[0024] 2. Driven by the driving motor, the rotating shaft not only drives the circulation of gas, but also realizes the rotation of wood, so that the wood can be fully contacted with the hot gas evenly ejected from the pores, thereby ensuring that all parts of the wood can be evenly and effectively dried, improving the drying quality.

[0025] 3. The drying tank always maintains a low pressure state. This design is conducive to the rapid evaporation of moisture inside the wood, further shortening the drying cycle and improving production efficiency.

[0026] 4. After drying is completed, the normal air pressure in the drying tank can be restored by automatically opening the normally open solenoid valve, which is convenient for opening the sealed door and taking out the wood.

[0027] 5. By precisely controlling the switch states of the normally closed solenoid valve and the normally open solenoid valve, the flexible switching of the gas circulation path is realized. During the drying process, the gas directly enters the hollow disk through the connecting pipe, which improves the efficiency; after the drying is completed, the gas path is changed so that it passes through the connecting pipe, the second connecting pipe, the cooling cylinder, the first connecting pipe and enters the hollow disk again. During this process, the semiconductor refrigeration component can be started to cool the temperature-conducting oil, effectively realizing the cooling treatment of the internal circulating gas and avoiding the discomfort or injury to the staff caused by the direct escape of hot gas.

[0028] 6. Through the transmission mechanism of the rotating shaft, the first bevel gear and the second bevel gear, the first rotating shaft and the second rotating shaft are driven to rotate, thereby driving the multiple stirring rods to rotate. This design not only promotes the flow of the temperature transfer oil, but also significantly improves the uniformity of the temperature of the temperature transfer oil, making the heat exchange process more efficient and uniform, and further optimizing the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure;

[0031] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A;

[0032] Figure 4 This is a schematic diagram of the connection between one of the placement plates and the mounting bar;

[0033] Figure 5 A schematic diagram of the structure of the connection between the driving mechanism and the gas flow mechanism;

[0034] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0035] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure;

[0036] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure.

[0037] In the figure: 1 shell, 2 sealing door, 3 mounting frame, 4 driving motor, 5 rotating shaft, 6 piston cylinder, 7 connecting box, 8 drying cylinder, 9 connecting pipe, 10 drying groove, 11 placing plate, 12 hollow disk, 13 diverter hole, 14 first one-way pipe, 15 second one-way pipe, 16 drying assembly, 17 first connecting port, 18 second connecting port, 19 piston column, 20 spring, 21 air hole, 22 mounting bar, 23 placing groove, 24 opening, 25 electric heating ring, 26 pulley, 27 transmission belt, 28 rotating disk, 29 connecting rod, 30 piston block, 31 cooling cylinder, 32 first connecting pipe, 33 second connecting pipe, 34 semiconductor refrigeration component, 35 first bevel gear, 36 second bevel gear, 37 first rotating shaft, 38 second rotating shaft, 39 stirring rod. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Example 1

[0041] Reference Figure 1-Figure 5 A production device for a harp resonance box includes a housing 1, a drying slot 10 is provided on the front side of the housing 1, a sealing door 2 is installed at the notch of the drying slot 10, and a handle is installed on the sealing door 2, through which wood can be conveniently taken in and out;

[0042] As an embodiment of the present invention, it also includes a placement mechanism, which includes a rotating shaft 5 rotatably connected between the upper and lower inner walls of the drying tank 10, and the placement mechanism includes a plurality of mounting bars 22 fixedly connected to the side wall of the rotating shaft 5, and the other side of each mounting bar 22 is fixedly connected to a placement plate 11, and the upper end of each placement plate 11 is provided with a placement groove 23, and each placement plate 11 is penetrated with a plurality of openings 24;

[0043] As an embodiment of the present invention, a heating mechanism is also included, the heating mechanism includes a hollow disk 12 arranged at the bottom of the shell 1, a plurality of diversion holes 13 are opened at the inner top of the hollow disk 12, and a plurality of electric heating rings 25 are installed at the bottom of the hollow disk 12;

[0044] As an embodiment of the present invention, a driving mechanism is further included, and the driving mechanism is used to drive the rotating shaft 5 to rotate. The driving mechanism includes a mounting frame 3 installed at the upper end of the housing 1, and the upper end of the rotating shaft 5 extends to the outside. A driving motor 4 is installed on the mounting frame 3, and a pulley 26 is installed on the output shaft of the driving motor 4 and the rotating shaft 5. The two pulleys 26 are connected by a transmission belt 27.

[0045] As an embodiment of the present invention, it also includes a gas flow mechanism, which cooperates with the heating mechanism. The gas flow mechanism includes a piston cylinder 6 fixedly connected to the upper end of the shell 1, a piston block 30 that can slide left and right is arranged in the piston cylinder 6, a rotating disk 28 is fixedly connected to the upper end of the rotating shaft 5, and a connecting rod 29 is rotatably connected to the eccentric part of the upper end of the rotating disk 28, and the other end of the connecting rod 29 is rotatably connected to the left side of the piston block 30. A connecting box 7 is fixedly connected to the right side of the shell 1, and a columnar cavity is arranged in the connecting box 7. A drying cylinder 8 is fixedly connected to the upper end of the connecting box 7, and a drying assembly 16 is arranged in the drying cylinder 8. The right side space of the piston cylinder 6 is connected to the inner top space of the drying tank 10 through the first one-way tube 14, and the right side space of the piston cylinder 6 is connected to the inner top space of the drying cylinder 8 through the second one-way tube 15. The inner bottom space of the drying cylinder 8 is connected to the columnar cavity through the first connecting port 17, and the middle space of the drying cylinder 8 is connected to the inside of the hollow disk 12 through the connecting pipe 9.

[0046] As an embodiment of the present invention, a one-way valve is installed inside the first one-way tube 14 and the second one-way tube 15. The one-way valve inside the first one-way tube 14 flows in a one-way direction from the top space in the drying tank 10 to the right space of the piston cylinder 6, and the one-way valve inside the second one-way tube 15 flows in a one-way direction from the right space of the piston cylinder 6 to the top space in the drying cylinder 8.

[0047] As an embodiment of the present invention, an air hole 21 is opened at the inner bottom of the columnar cavity, and a piston column 19 that can slide up and down is arranged in the columnar cavity. The lower end of the piston column 19 is elastically connected to the inner bottom of the columnar cavity through a spring 20. The inner top space of the columnar cavity is connected to the drying tank 10 through a second connecting port 18. A normally open solenoid valve is installed inside the second connecting port 18. The normally open solenoid valve and the drive motor 4 are in the same series circuit.

[0048] In the present invention, when in use, after the staff opens the sealing door 2, they put a plurality of woods into a plurality of placement slots 23, close the sealing door 2, and start the driving motor 4 and the electric heating ring 25 at the same time. After the driving motor 4 is started, the rotating shaft 5 will rotate through the transmission of the pulley 26 and the transmission belt 27, which will drive the rotating disk 28 to rotate, and then the piston block 30 will be reciprocated left and right by the connecting rod 29. The left and right reciprocating motion of the piston block 30 will be through the cooperation of the first one-way tube 14 and the second one-way tube 15, so that the gas in the drying tank 10 is sucked into the drying cylinder 8, and finally enters the inner top space of the columnar cavity. In this process, the amount of gas in the drying tank 10 is continuously reduced, while the amount of gas at the top of the columnar cavity is continuously increased, thereby pushing the piston column 19 to move downward and compressing the spring 20. When the piston column 19 is lower than the connection point between the connecting tube 9 and the columnar cavity, the gas will be released through the connecting tube 9, enter the hollow disk 12, and finally spray out from the plurality of diversion holes 13;

[0049] By adopting the above method, a one-way gas flow will eventually be generated in the drying tank 10, the piston cylinder 6, the drying cylinder 8, the columnar cavity and the drying tank 10. The gas flow will perform circulating gas heating, and at the same time, the drying component 16 will be used to absorb the water vapor in the gas. In addition, the drying tank 10 is always kept at a low pressure, which can promote the evaporation of water in the wood therein and improve the drying efficiency.

[0050] Furthermore, the rotation of the rotating shaft 5 will also drive the multiple wood pieces to rotate, and after contacting with the uniform gas ejected from the multiple diversion holes 13, the uniformity of drying is effectively improved;

[0051] After drying is completed, the drive motor 4 and the electric heating ring 25 are turned off. At this time, the normally open solenoid valve is de-energized and turned on. Under the elastic action of the spring 20, the piston column 19 moves upward, and the gas in the columnar cavity will eventually be released into the drying tank 10, so that the air pressure in the drying tank 10 is in a normal state, which is convenient for opening the sealing door 2.

[0052] Example 2

[0053] Reference Figure 6-Figure 8The difference between this embodiment and embodiment 1 is that a cooling cylinder 31 is fixedly connected to the right side of the shell 1, and the cooling cylinder 31 is filled with temperature-conducting oil. The liquid level of the temperature-conducting oil is half of the inner cavity of the cooling cylinder 31. A semiconductor refrigeration component 34 is installed on the right side wall of the cooling cylinder 31. Furthermore, the semiconductor refrigeration component 34 consists of a semiconductor refrigeration sheet and a heat dissipation wind mechanism. This is a prior art and is not elaborated in detail here. The refrigeration end of the semiconductor refrigeration component 34 extends to the inside of the cooling cylinder 31, and the inner wall components on the left and right sides of the cooling cylinder 31 are rotatably connected to the second rotating shaft 38. A plurality of stirring rods 39 are fixedly connected to the outside of the second rotating shaft 38 at equal intervals. The inner bottom space of the cooling cylinder 31 is connected to the inside of the connecting pipe 9 through the second connecting pipe 33, and the inner top space of the cooling cylinder 31 is connected to the inner top space through the first A connecting pipe 32 is connected to the inside of the connecting pipe 9. The first connecting pipe 32, the second connecting pipe 33 and the connecting pipe 9 are all equipped with normally closed solenoid valves located below the cooling tube 31. During the entire drying process, the normally closed solenoid valves inside the first connecting pipe 32 and the second connecting pipe 33 are in a closed state, while the normally closed solenoid valve inside the connecting pipe 9 is open. When the subsequent drying is completed, the normally closed solenoid valves inside the first connecting pipe 32 and the second connecting pipe 33 are opened, while the normally closed solenoid valve inside the connecting pipe 9 is closed. The left end of the second rotating shaft 38 extends to the inside of the drying tank 10 and is equipped with a first rotating shaft 37. A second bevel gear 36 is installed on the first rotating shaft 37. A first bevel gear 35 is installed on the rotating shaft 5. The first bevel gear 35 is meshed with the second bevel gear 36.

[0054] In actual use, during drying, the normally closed solenoid valves inside the first connecting pipe 32 and the second connecting pipe 33 are in a closed state, while the normally closed solenoid valve inside the connecting pipe 9 is open, so the gas discharged from the connecting box 7 directly enters the hollow disk 12 through the connecting pipe 9. When the subsequent drying is completed (the driving motor 4 is not turned off at the first time), the normally closed solenoid valves inside the first connecting pipe 32 and the second connecting pipe 33 are opened, and the normally open solenoid valve inside the connecting pipe 9 is closed, so that the gas discharged from the connecting box 7 will pass through the connecting pipe 9, the second connecting pipe 33, the cooling tube 31, the first connecting pipe 32, the connecting pipe 9 and the hollow disk 12. In this process, the semiconductor refrigeration component 34 can also be started to cool the temperature conducting oil. In this way, when the gas passes through, it can be cooled by heat exchange to achieve internal circulation gas cooling, so as to avoid the direct diffusion of hot air after the staff opens the sealing door 2 and affects the staff;

[0055] In addition, when the rotating shaft 5 rotates, the first rotating shaft 37 will be rotated through the transmission of the first bevel gear 35 and the second bevel gear 36, and then the second rotating shaft 38 will be rotated, and finally the multiple stirring rods 39 will be rotated. By adopting this method, the temperature of the temperature transfer oil can be more uniform and the heat exchange effect can be more uniform.

[0056] The present invention also discloses a method for producing a harp resonance box, which adopts the above-mentioned production device and comprises the following steps:

[0057] Step 1: Use computer-aided design software to create a three-dimensional model of the resonance box;

[0058] Step 2: Select spruce or maple and put it into the production device for drying;

[0059] Step 3: Use CNC machine tools to cut and shape the wood according to the design drawings;

[0060] Step 4: Assemble the components into a complete resonance box structure by gluing and nailing;

[0061] Step 5: Surface treatment process of sanding, painting and oiling the resonance box;

[0062] Step 6: Tune and acoustically test the harp resonance box.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A production device for a harp resonance box, characterized in that: include: A shell (1), wherein a drying groove (10) is provided on the front side of the shell (1), a sealing door (2) is installed at the notch of the drying groove (10), and a handle is installed on the sealing door (2); A placement mechanism, the placement mechanism comprising a rotating shaft (5) rotatably connected between the upper and lower inner walls of the drying tank (10), the placement mechanism comprising a plurality of mounting strips (22) fixedly connected to the side wall of the rotating shaft (5), the other side of each mounting strip (22) being fixedly connected to a placement plate (11), the upper end of each placement plate (11) being provided with a placement groove (23), and each placement plate (11) being provided with a plurality of openings (24); A heating mechanism, the heating mechanism comprising a hollow disk (12) arranged at the inner bottom of the shell (1), a plurality of diversion holes (13) being opened at the inner top of the hollow disk (12), and a plurality of electric heating rings (25) being installed at the inner bottom of the hollow disk (12); A driving mechanism, the driving mechanism is used to drive the rotating shaft (5) to rotate; A gas flow mechanism cooperates with the heating mechanism.

2. A harp resonance box production device according to claim 1, characterized in that: The driving mechanism comprises a mounting frame (3) mounted on the upper end of the housing (1), the upper end of the rotating shaft (5) extending to the outside, a driving motor (4) mounted on the mounting frame (3), a pulley (26) mounted on the output shaft of the driving motor (4) and the rotating shaft (5), and the two pulleys (26) are connected by a transmission belt (27).

3. A harp resonance box production device according to claim 2, characterized in that: The gas flow mechanism comprises a piston cylinder (6) fixedly connected to the upper end of the housing (1), a piston block (30) which can slide left and right is arranged in the piston cylinder (6), a rotating disk (28) is fixedly connected to the upper end of the rotating shaft (5), a connecting rod (29) is rotatably connected to the eccentric part of the upper end of the rotating disk (28), and the other end of the connecting rod (29) is rotatably connected to the left side of the piston block (30).

4. A harp resonance box production device according to claim 3, characterized in that: The right side of the shell (1) is fixedly connected to a connection box (7), a columnar cavity is arranged in the connection box (7), the upper end of the connection box (7) is fixedly connected to a drying cylinder (8), a drying assembly (16) is arranged in the drying cylinder (8), the right side space of the piston cylinder (6) is connected to the inner top space of the drying tank (10) through a first one-way tube (14), the right side space of the piston cylinder (6) is connected to the inner top space of the drying cylinder (8) through a second one-way tube (15), the inner bottom space of the drying cylinder (8) is connected to the columnar cavity through a first connecting port (17), and the middle space of the drying cylinder (8) is connected to the inside of the hollow disk (12) through a connecting tube (9).

5. A harp resonance box production device according to claim 4, characterized in that: One-way valves are installed inside the first one-way tube (14) and the second one-way tube (15). The one-way valve inside the first one-way tube (14) flows in a one-way direction from the top space inside the drying tank (10) to the right space of the piston cylinder (6), while the one-way valve inside the second one-way tube (15) flows in a one-way direction from the right space of the piston cylinder (6) to the top space inside the drying cylinder (8).

6. A harp resonance box production device according to claim 4, characterized in that: An air hole (21) is provided at the inner bottom of the columnar cavity. A piston column (19) which can slide up and down is arranged in the columnar cavity. The lower end of the piston column (19) is elastically connected to the inner bottom of the columnar cavity via a spring (20).

7. A harp resonance box production device according to claim 4, characterized in that: The inner top space of the columnar cavity is connected to the drying tank (10) via a second connecting port (18), a normally open electromagnetic valve is installed inside the second connecting port (18), and the normally open electromagnetic valve and the driving motor (4) are in the same series circuit.

8. The production device for a harp resonance box according to claim 4, characterized in that: A cooling cylinder (31) is fixedly connected to the right side of the shell (1), and the cooling cylinder (31) is filled with temperature-conducting oil. The liquid level of the temperature-conducting oil is at half of the inner cavity of the cooling cylinder (31). A semiconductor refrigeration component (34) is installed on the right side wall of the cooling cylinder (31), and the refrigeration end of the semiconductor refrigeration component (34) extends into the interior of the cooling cylinder (31). The left and right inner wall components of the cooling cylinder (31) are rotatably connected to a second rotating shaft (38), and a plurality of stirring rods (39) are fixedly connected to the outer side of the second rotating shaft (38) at equal intervals. The inner bottom space of the cooling cylinder (31) is connected to the interior of the connecting pipe (9) through the second connecting pipe (33), and the inner top space of the cooling cylinder (31) is connected to the interior of the connecting pipe (9) through the first connecting pipe (32). The first connecting pipe (32), the second connecting pipe (33) and the connecting pipe (9) are all installed with normally closed electromagnetic valves at the bottom of the cooling cylinder (31).

9. The production device for a harp resonance box according to claim 4, characterized in that: The left end of the second rotating shaft (38) extends into the interior of the drying tank (10) and is installed with a first rotating shaft (37), a second bevel gear (36) is installed on the first rotating shaft (37), a first bevel gear (35) is installed on the rotating shaft (5), and the first bevel gear (35) is meshed with the second bevel gear (36).

10. A method for producing a harp resonance box, using the production device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Use computer-aided design software to create a three-dimensional model of the resonance box; Step 2: Select spruce or maple and put it into the production device for drying; Step 3: Use CNC machine tools to cut and shape the wood according to the design drawings; Step 4: Assemble the components into a complete resonance box structure by gluing and nailing; Step 5: Surface treatment process of sanding, painting and oiling the resonance box; Step 6: Tune and acoustically test the harp resonance box.

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