A rotating mechanism for processing a musical instrument sound tube assembly

Abstract

The cam is secured to the base by a spring, and the spring, when in contact with the base, engages with the cam, engages with the base member, and engages with the spring member to engage with the base member.

Description

Technical Field

[0001] The invention relates to a device for processing a musical instrument sound tube, in particular to a device for rotating the musical instrument sound tube during processing. Background Art

[0002] like Figure 1 、 2 As shown, the sound tube assembly of the musical instrument generally consists of a front cover 11, a sound tube 12 and a rear cover 13. The outer circumference of the sound tube is distributed with tone teeth 121 arranged according to the music. These tone teeth pluck the keys of the matching musical instrument sound pieces, causing the keys to vibrate and emit sounds, thereby completing the performance of the music.

[0003] The existing tone tooth forming process involves first punching out protruding tone teeth from a rectangular sheet of material. This sheet is then rolled into a cylindrical shape, with the protruding tone teeth positioned on the outer circumference of the cylindrical shape. Because the protruding tone teeth vary in height, playing the keys of the tone plate creates a disharmony in both rhythm and loudness, affecting the musical quality. Therefore, the tone teeth of the tone cylinder need to be reprocessed to ensure they remain concentric as they rotate around the axis of the cylinder assembly.

[0004] The existing method for processing the tone teeth of the musical instrument sound cylinder is to manually place the sound cylinder assembly into the driving device 4, align the notch 1111 of the front cover of the sound cylinder assembly with the small boss 41 of the driving device 4, use the top cone 3 to press the tapered hole of the rear cover 13 of the sound cylinder assembly, and use the notch 1111 of the front cover of the sound cylinder and the small boss 41 of the driving device to rotate the sound cylinder assembly around the axis, and then use a tool to turn the tone teeth of different heights, or use a grinding wheel to grind the tone teeth of different heights. Figure 3 .

[0005] Since the notch 1111 of the front end cover is very small in the circumferential direction, when the speaker assembly is manually placed into the driving device 4, it takes a long time to align the notch 1111 of the front end cover of the speaker assembly with the small boss 41 of the driving device. When the top cone 31 presses the speaker assembly tightly, it is necessary to keep the speaker assembly from deviating from the small boss 41 of the driving device. If the small boss of the driving device cannot be accurately embedded in the notch 1111 of the front end cover of the speaker assembly, the small boss 41 of the driving device 4 will press the open annular platform 111 of the front end cover, and the speaker assembly 2 can only rotate together relying on the pre-tightening friction force. When entering turning or grinding, the pre-tightening friction force changes due to the change of cutting or grinding force, causing the speaker assembly to jump and the tone teeth to deform. In addition, friction will also cause the speaker assembly to heat up and slip easily, causing the speaker assembly to bounce, and it is impossible to continue processing, and the processing efficiency is significantly reduced. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a rotating mechanism for processing the sound tube assembly of a musical instrument. The rotating mechanism can ensure the processing quality of the sound tube assembly and improve the processing efficiency.

[0007] The technical solution adopted by the present invention to solve the above problems is: a rotating mechanism for processing the sound cylinder assembly of an eight-tone piano, including a tightening mechanism, a driver, and a driving rod assembly. The driving rod assembly is fixed to the rotating part of the driver, the tightening mechanism is opposite to the driving rod assembly and is on the same axis, and the sound cylinder assembly is placed between the tightening mechanism and the driving rod assembly. The driving rod assembly includes a driving rod guide plate, a spring, a spring seat, a spring pad, a driving rod and a base. The base is provided with a accommodating cavity, and the spring pad, spring seat, and driving rod guide plate are placed in the accommodating cavity in sequence. The outer end of the base is fixed A fixed driving rod guide plate is provided on the spring seat, and a plurality of through holes for accommodating springs are provided. One end of the spring is limited by the spring pad, and the other end is placed in the through hole and limited by the tail of the driving rod. The driving rod guide plate is provided with a guide hole corresponding to the through hole on the spring seat. The tail of the driving rod is larger than the front part, and its front part can pass through the guide hole of the driving rod guide plate, and its tail part cannot pass through the guide hole of the driving rod guide plate. The tail part can be inserted into the through hole of the spring seat and connected with the other end of the spring. The driving rod corresponds to the annular platform of the front end cover of the musical instrument sound tube, and the driving rod can be inserted into the gap of the annular platform.

[0008] Preferably, a through screw hole perpendicular to the cavity is provided at the outer end of the base, and a set screw is passed through the through screw hole at the outer end of the base to fix the drive rod guide plate, which facilitates disassembly and assembly.

[0009] Preferably, there are several drive rods and springs, evenly distributed along the circumference, corresponding to the annular platform of the front end cover of the music box sound tube. When the drive rod assembly rotates, the drive rod can rotate smoothly on the front end cover of the music box sound tube. Since there are several drive rods, the intervals between adjacent drive rods are short, so they can be quickly inserted into the gap of the annular platform.

[0010] More specifically, the driver is a motor.

[0011] Compared with the prior art, the advantages of the present invention are that the driving rod of the mechanism can be elastically supported on the open annular platform of the front end cover of the music instrument sound tube by a spring, and can conveniently fall into the notch of the annular platform as the driver rotates, so that the driving rod can drive the music instrument sound tube to rotate synchronously, and the tone teeth on the music instrument sound tube can be conveniently processed subsequently, such as turning or grinding, thereby realizing the automated processing of the music instrument sound tube assembly, ensuring the quality of the music instrument sound tube, avoiding damage to the tone teeth, and greatly improving the production efficiency of the music instrument sound tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of an existing eight-tone piano sound tube.

[0013] Figure 2 It is a three-dimensional schematic diagram of the existing eight-tone piano sound tube from another direction.

[0014] Figure 3 It is a schematic diagram of the structure of the existing eight-tone piano sound tube component driver.

[0015] Figure 4 2 is an exploded schematic diagram of a drive rod assembly according to an embodiment of the present invention.

[0016] Figure 5 It is a cross-sectional view of the driver and speaker assembly according to an embodiment of the present invention.

[0017] Figure 6 It is a schematic diagram of the driver structure of an embodiment of the present invention.

[0018] Figure 7 It is a perspective view of another structure of the drive rod assembly.

[0019] Figure 8 It is a three-dimensional diagram of another structure of the drive rod assembly. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 、 2 As shown, the sound cylinder assembly 1 includes a front end cover 11 , a rear end cover 13 and a sound cylinder 12 .

[0022] An annular platform 111 is provided on the front end cover 11 , and a notch 1111 is provided on the annular platform 111 , into which the driving rod 6 described below can be inserted.

[0023] The rear end cover 13 is provided with a centering cone hole 131 , which cooperates with the supporting cone 31 of the tightening mechanism 3 to position the rear end of the sound cylinder 12 .

[0024] The sound cylinder 12 is provided with sound teeth 121 on its circumference.

[0025] In order to process the tone teeth 121 of the sound cylinder assembly 1, a rotating mechanism for processing the sound cylinder assembly of the musical instrument is invented, which includes a tightening mechanism 3, a driver 4, and a driving rod assembly 6.

[0026] The driving rod assembly 6 is fixed on the rotating part of the driver 4 , the tightening mechanism 3 is opposite to the driving rod assembly 6 and is on the same axis, and the sound cylinder assembly 1 is placed between the tightening mechanism 3 and the driving rod assembly 6 .

[0027] In this embodiment, a supporting cone 31 is provided at the front end of the tightening mechanism 3 , and the supporting cone 31 can be pushed into the centering cone hole 131 on the end cover 13 to position the sound cylinder assembly 1 together with the driving rod assembly 6 .

[0028] The driving rod assembly 6 includes a driving rod guide plate 67 , a spring 65 , a spring seat 64 , a spring pad 63 , a driving rod 66 , a set screw 62 and a base 61 .

[0029] The base 61 is provided with a accommodating cavity 611, and the spring pad 63, spring seat 64, and drive rod guide plate 67 are placed in the accommodating cavity 611 in sequence. The outer end of the base 61 is provided with a through screw hole 612 perpendicular to the cavity 611, and the fastening screw 62 fixes the drive rod guide plate 67 through the through screw hole 611 at the outer end of the base 61.

[0030] The spring seat 64 is provided with a plurality of through holes 641 for accommodating the spring 65 . One end of the spring 65 is limited by the spring pad 63 , and the other end is placed in the through hole 641 and limited by the tail 662 of the driving rod 66 .

[0031] The driving rod guide plate 67 is provided with a guide hole 671 corresponding to the through hole 641. The position of the guide hole 671 corresponds to the annular platform 111 of the sound cylinder assembly 1, ensuring that when the sound cylinder assembly 1 is placed in the sound cylinder rotating mechanism, the driving rod 66 passing through the guide hole 671 falls on the annular platform 111.

[0032] The tail portion 662 of the driving rod 66 is larger than the front portion 661. The front portion 661 can pass through the guide hole 671 of the driving rod guide plate 67, while the tail portion 662 cannot pass through the guide hole 671 of the driving rod guide plate 67. The tail portion 662 can be inserted into the through hole 641 of the spring seat 64 and connected to the other end of the spring 65.

[0033] When assembling the driving rod assembly 6, the spring pad 63, spring seat 64, spring 65, driving rod 66, and driving rod guide plate 67 are sequentially installed into the accommodating cavity 611 provided in the base 61. The driving rod 66 passes through the through hole 671 of the driving rod guide plate 67, and the driving rod guide plate 67 is locked with a set screw 62 passing through the through screw hole 612 of the base 61. The front end of the driving rod 66 is exposed from the guide hole 671 of the driving rod guide plate 67 and is guided by it, and the rear end of the driving rod 66 is tightened by the spring 65.

[0034] When the driving rod assembly 6 is used, the other end of the driving rod assembly 6 is fixed to the rotating shaft of the driver 4 through its base 61, and the sound cylinder assembly 2 is placed between the tightening mechanism 3 and the driving rod assembly 6. When the cone 31 of the tightening mechanism 3 is inserted into the centering cone hole 131 of the rear end cover 13 of the sound cylinder assembly to tighten the sound cylinder assembly, the annular platform 111 of the front end cover of the sound cylinder assembly is also tightened by the driving rod 66 of the driving rod assembly 6. Figure 5When the driving motor rotates, when the driving rod 66 is at the position of the front end cover open annular platform 111, the driving motor cannot drive the sound cylinder assembly 2 to rotate, and the driving rod 66 will continue to rotate around the front end cover open annular platform 111. When the rotation is at the gap 1111 of the open annular platform 111, the driving rod 66 is embedded in the front end cover gap 1111. Figure 6 The driving motor can drive the sound cylinder assembly to rotate. At this time, the turning tool or the grinding head automatic feeding mechanism can complete the turning or grinding of the sound teeth of the moving sound cylinder assembly.

[0035] In this embodiment, the number of driving rods 66 and springs 65 is 10 and they are evenly distributed along the circumference. In practice, the number of driving rods and springs can be varied. For example, there can be two driving rods and two springs, and the two driving rods are symmetrically arranged along the circumference. Figure 7 , even the drive rod and spring are one, see Figure 8 The working principles of these driving rod assemblies with different numbers of driving rods and springs are the same or similar, that is, under the action of the spring 65, the driving rod 66 supports the open annular platform 111 of the sound cylinder assembly. During the rotation process, when the driving rod 66 falls into the notch 1111, the sound cylinder assembly and the driving assembly are rotated as a whole by the driving motor, which will not be described in detail here.

Claims

1. A rotary mechanism for processing a musical instrument sound tube assembly, characterized in that: The cam is secured to the base via a spring, and the spring means is secured to the base via a latching mechanism, wherein the cam is secured to the base via a latching mechanism.

2. The rotary mechanism for processing a musical instrument sound cylinder assembly according to claim 1, characterized in that: The outer end of the base is provided with a through screw hole perpendicular to the cavity, and a set screw is passed through the through screw hole at the outer end of the base to fix the driving rod guide plate.

3. The rotary mechanism for processing a musical instrument sound cylinder assembly according to claim 1 or 2, characterized in that: There are several driving rods and springs, which are evenly distributed along the circumference and correspond to the annular platform of the front end cover of the musical instrument sound tube.

4. The rotary mechanism for machining a musical instrument sound cylinder assembly according to claim 1 or 2, characterized in that: The driver is a motor.

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