A device and method for forming a round shape of cork pieces at the end of a musical instrument

Abstract

The present invention discloses a device and method for forming a cork sheet at the end of a musical instrument into a circle, relating to the field of musical instruments, including an operating table, a musical instrument pressing and rotating assembly being arranged on the operating table, at least one swinging lifting mechanism for placing a cork sheet body being arranged on the operating table, at least a portion of the swinging lifting mechanism being located directly below at least one end of the musical instrument body pressed by the musical instrument pressing and rotating assembly and having a variable spacing from the musical instrument body, and at least a portion of the swinging lifting mechanism being provided with a rotating moving part having a rotation direction opposite to that of the musical instrument pressing and rotating assembly, the musical instrument pressing and rotating assembly and the swinging lifting mechanism enable the cork sheet body to be formed into a circle in the circumference of at least one end of the musical instrument body, and the cork sheet body with colloid is formed into a circle on the musical instrument body by the mutual cooperation of the swinging lifting mechanism and the musical instrument pressing and rotating assembly, and the present application improves working efficiency and the effect after forming the circle.

Description

Technical Field

[0001] The present invention relates to the technical field of musical instruments, and in particular to a device and method for forming a round shape of cork pieces at the end of a musical instrument. Background Art

[0002] Musical instruments generally refer to objects that can produce timbre and rhythm using various methods. They are generally categorized as traditional Chinese instruments and Western instruments. For example, the flute is one type of musical instrument. After production, the flute's ends are rounded with a layer of cork, which is then polished. The purpose of the rounded cork is to facilitate later processing and enhance the flute's aesthetics. Examples of musical instruments include the clarinet.

[0003] The existing method of forming the cork sheets into a circle at the end of a musical instrument is to manually roll the cork sheets around the end of the instrument. This manual method is inefficient and has poor forming effect, resulting in unsatisfactory sealing performance. Therefore, we propose a device for forming the cork sheets into a circle at the end of a musical instrument to solve the above problem. Summary of the Invention

[0004] The invention provides a device and method for forming a circle of cork pieces for the end of a musical instrument, which solves the current technical problems of slow forming efficiency and poor forming effect of forming a circle of cork pieces for the end of a musical instrument.

[0005] In order to solve the above technical problems, the present invention provides a device for forming a cork sheet at the end of a musical instrument into a circle, comprising an operating table, on which a musical instrument pressing and rotating assembly is arranged, and on which at least one swinging lifting mechanism for placing a cork sheet body is provided, at least a portion of the swinging lifting mechanism is located directly below at least one end of the musical instrument body pressed by the musical instrument pressing and rotating assembly and has a variable spacing from the musical instrument body, and at least a portion of the swinging lifting mechanism is provided with a rotating moving part with a rotation direction opposite to that of the musical instrument pressing and rotating assembly, and the musical instrument pressing and rotating assembly and the swinging lifting mechanism make the cork sheet body rounded in the circumference of at least one end of the musical instrument body; and during the rounding, the thickness of the cork sheet body at any position is greater than the vertical spacing between the musical instrument body and the highest position of the rotating moving part.

[0006] Preferably, the swinging lifting mechanism includes a swing arm hinged to the operating table at one end, and a placement groove for placing the cork sheet body is provided on the upper surface of the swing arm, and a spacing cancellation component for driving the swing arm to swing up and down is provided on the operating table, the cantilever end of the swing arm has a variable spacing with the instrument body, and the rotating moving part at least partially protrudes from the bottom of the placement groove and is located directly below the corresponding end of the instrument body.

[0007] The above technical solution is adopted: a swing-type lifting mechanism includes a swing arm hinged to an operating table at one end, and a placement groove for placing a cork sheet body is provided on the upper surface of the swing arm, a spacing cancellation component for driving the swing arm to swing up and down is provided on the operating table, a variable spacing is left between the cantilever end of the swing arm and the instrument body, and the rotating moving part at least partially protrudes from the bottom of the placement groove and is located directly below the corresponding end of the instrument body, the upper surface of the cork sheet body is evenly coated with colloid, and then the cork sheet body is placed in the placement groove, the instrument body is tightened and rotated by the instrument pressing rotating component, and then the swing arm is driven upward by the spacing cancellation component to contact the rotating instrument body. At the moment of contact, the rotating instrument body can round the cork sheet body with colloid on the instrument body.

[0008] Preferably, the rotating member is a freely rotating roller.

[0009] By adopting the above technical solution, the rotating moving part is a freely rotating roller, which can better realize the movement of the cork sheet body toward the instrument body, and further facilitate the rounding and shaping of the cork sheet body on the instrument body.

[0010] Preferably, both sides of the end of the swing arm where the rotary moving part is provided are provided with cork width-direction limiting portions respectively extending upward and imitating at least a part of the circumference of the instrument body.

[0011] The above technical solution is adopted: by providing upwardly extending cork sheet width limiting parts on both sides of one end of the swing arm where the rotating moving part is provided and imitating at least part of the circumference of the instrument body, the limiting parts prevent the cork sheet body from being rounded and formed on the instrument body, and can form limitations on the two long sides of the cork sheet body.

[0012] Preferably, the bottom of one end of the placement groove where the rotating moving part is provided has a track guiding slope extending upwards. The track guiding slope can more effectively form the cork sheet body into a circle on the instrument body.

[0013] Preferably, the swing arm is movably connected to a fixed seat fixed on the operating table through a hinge structure, and at least a portion of the spacing cancellation component extends out of the upper surface of the operating table and is hingedly connected to the swing arm, and the fixed seat and the spacing cancellation component cause the swing arm to be suspended.

[0014] The above technical solution is adopted: the swing arm is movably connected to the fixed seat fixed on the operating table through a hinge structure, and at least part of the spacing cancellation component extends out of the upper surface of the operating table and is hingedly connected to the swing arm. The fixed seat and the spacing cancellation component make the swing arm suspended, and the swing arm is driven up and down by the spacing cancellation component. The spacing cancellation component is a pneumatic cylinder or an oil cylinder.

[0015] Preferably, the musical instrument pressing and rotating assembly includes an adjusting seat and a driving seat, the adjusting seat and the driving seat are arranged on the operating table, the driving seat is provided with a first rotating shaft, and the adjusting seat is provided with a second rotating shaft.

[0016] The above technical solution is adopted: the musical instrument is pressed against the rotating assembly including an adjustment seat and a driving seat, the adjustment seat and the driving seat are arranged on the operating table, the driving seat is provided with a first rotating shaft, the adjustment seat is provided with a second rotating shaft, and the driving seat can adopt a servo motor.

[0017] Preferably, a positioning baffle is further provided on the operating table, and the positioning baffle is provided at one end close to the adjustment seat, and the adjustment seat can be adjusted along the length direction of the operating table.

[0018] The above technical solution is adopted: a positioning baffle is also provided on the operating table, and the positioning baffle is provided at one end close to the adjustment seat. The adjustment seat can be adjusted along the length direction of the operating table, and the adjustment of the adjustment seat can be achieved by adjusting the screw structure in the existing technology.

[0019] Preferably, the first rotating shaft and the driving seat are detachably connected.

[0020] The above technical solution is adopted: the first rotating shaft and the driving seat are detachably connected, which facilitates the replacement of the first rotating shaft, thereby better adapting to musical instruments of different sizes and types.

[0021] Preferably, a threaded hole is provided on the first rotating shaft, a fastening screw is provided in the threaded hole, the first rotating shaft is inserted into the output end of the driving seat, and is fixed to the output end of the driving seat by the fastening screw.

[0022] The above technical solution is adopted: a threaded hole is opened on the first rotating shaft, a fastening screw is set in the threaded hole, the first rotating shaft is inserted into the output end of the driving seat, and is fixed to the output end of the driving seat by the fastening screw, which facilitates installation and disassembly between the first rotating shaft and the driving seat.

[0023] The present application also provides a method for forming a circle of cork pieces for the end of a musical instrument, using the device for forming a circle of cork pieces for the end of a musical instrument, and the method for forming a circle of cork pieces for the end of a musical instrument comprises the following steps:

[0024] S1. A first inclined surface is provided on one end of a surface of a cork sheet body provided with a colloid, a second inclined surface is provided on the other end of another surface of the cork sheet body, and two corners of the surface of the cork sheet body are chamfered, and the colloid is applied to the surface of the cork sheet body;

[0025] S2. Place the cork sheet body in S1 on a swing-type lifting mechanism with the colloid facing upward, and then assemble the instrument body to the instrument abutting and rotating assembly, with at least one end of the cork sheet body positioned directly below a corresponding end of the instrument body and a variable spacing between the cork sheet body and the instrument body;

[0026] S3, canceling the variable spacing in S2, so that the cork sheet body contacts the instrument body;

[0027] S4. Start the instrument pressing rotating assembly and drive the instrument body to rotate. During the rotation, the colloid on the cork sheet body adheres to the outer peripheral surface of the corresponding end of the instrument body. When the first inclined surface and the second inclined surface are matched and fixed together, the cork sheet body is formed into a circle on the instrument body.

[0028] Compared with the related art, the present invention has the following beneficial effects:

[0029] Compared with the traditional round forming of cork pieces at the end of musical instruments, the present invention is provided with a swinging lifting mechanism and a musical instrument pressing and rotating component. During operation, the upper surface of the cork piece is evenly coated with colloid in advance, and the musical instrument body is fixed and rotated by the musical instrument pressing and rotating component. Then the cork piece body is placed on the swinging lifting mechanism, and the swinging lifting mechanism is controlled to lift it so that the side of the cork piece body with the colloid contacts the rotating musical instrument body, so that the cork piece body with the colloid can be rounded in the circumferential direction of the musical instrument. At the same time, the rotating moving part in the swinging lifting mechanism with a rotation direction opposite to that of the musical instrument pressing and rotating component can better assist the cork piece body with the colloid to move toward the musical instrument body, and round it on the musical instrument body. The above assembly method not only improves productivity, but also ensures the roundness of the round forming, so that the quality of the product is guaranteed to be consistent.

[0030] The thickness of the cork sheet body at any position is greater than the vertical distance between the musical instrument body and the highest position of the rotating moving part. At this time, the circular molding will cause the cork sheet body to deform in the thickness and width directions, so that the surface of the cork sheet body provided with the colloid can fully contact the musical instrument body, ensuring that the cork sheet body will not be displaced axially and circumferentially relative to the musical instrument body after the circular molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a device for forming a circle of cork pieces at the end of a musical instrument;

[0032] Figure 2 A top view of a device for forming a circle of cork pieces at the end of a musical instrument;

[0033] Figure 3 This is a schematic diagram of the structure of a swing-type lifting mechanism in a device for forming a round shape of cork pieces at the end of a musical instrument;

[0034] Figure 4 A schematic diagram of the disassembly of a driving seat and a first rotating shaft in a device for forming a cork piece at the end of a musical instrument;

[0035] Figure 5 A schematic diagram of a musical instrument end cork piece group forming device;

[0036] Figure 6 This is a schematic diagram of a cork sheet forming a circle;

[0037] Figure 7 This is a schematic structural diagram of the first solution of Example 4 for forming a cork sheet into a circle;

[0038] Figure 8 This is a schematic structural diagram of the second embodiment of the fourth embodiment of the round-shaped cork sheet assembly.

[0039] Numbers in the figure: 1. operating table; 2. driving seat; 3. adjusting seat; 4. first rotating shaft; 41. threaded hole; 42. fastening screw; 5. second rotating shaft; 6. swinging lifting mechanism; 61. fixing seat; 62. swinging arm; 63. spacing cancellation component; 64. placement groove; 65. limiting part; 66. rotating moving part; 67. trajectory guiding inclined plane; 68. arc-shaped elastic sheet; 69. contact wheel; 7. instrument body; 8. cork sheet body; 80. first inclined plane; 81. second inclined plane; 9. positioning baffle; 10. instrument pressing rotating component. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] Example 1, as Figure 1-Figure 5As shown, a device for forming a cork sheet at the end of a musical instrument into a circle includes an operating table 1, on which is mounted a musical instrument abutting and rotating assembly 10 capable of abutting and controlling the rotation of the musical instrument. The operating table 1 also includes at least one swinging support mechanism 6 for placing a cork sheet body 8. At least a portion of the swinging support mechanism 6 is positioned directly below at least one end of a musical instrument body 7 abutted by the musical instrument abutting and rotating assembly 10, with a variable spacing therebetween. Furthermore, at least a portion of the swinging support mechanism 6 is provided with a rotating member 66 that rotates in a direction opposite to that of the musical instrument abutting and rotating assembly 10. The musical instrument abutting and rotating assembly 10 and the swinging support mechanism 6 cause the cork sheet body 8 to be formed into a circle around at least one end of the musical instrument body 7. During the forming process, the thickness of the cork sheet body 8 at any position is greater than the vertical spacing between the musical instrument body 7 and the highest position of the rotating member 66. This forming process compresses the thickness of the cork sheet body 8, thereby ensuring a secure bond between the cork sheet body 8 and the musical instrument body 7.

[0042] like Figure 6 As shown, the cork sheet body 8 has a first inclined surface 80 at one end of one surface provided with the colloid, and a second inclined surface 81 is provided at the other end of the other surface of the cork sheet body 8. Here, the one end and the other end are opposite ends of the cork sheet body 8 but are not the same surface. When the cork sheet body 8 is rounded, the first inclined surface 80 and the second inclined surface 81 are matched and fixed together to ensure the roundness of the cork sheet body 8 after rounding.

[0043] The thickness of the cork sheet body 8 at any position is greater than the vertical distance between the musical instrument body 7 and the highest position of the rotating moving part 66. At this time, the circular molding will cause the cork sheet body 8 to deform in the thickness and width directions, so that the surface of the cork sheet body 8 with the colloid can fully contact the musical instrument body 7, ensuring that the cork sheet body 8 will not be displaced axially and circumferentially relative to the musical instrument body 7 after the circular molding.

[0044] like Figure 5 As shown, during operation, the upper surface of the cork sheet body 8 is evenly coated with colloid in advance, and the musical instrument body 7 is fixed and rotated by the musical instrument pressing and rotating assembly 10, and then the cork sheet body 8 is placed on at least one swinging lifting mechanism 6. For example, if the musical instrument body 7 is a single-end and the cork sheet body 8 needs to be rounded, the swinging lifting mechanism 6 is controlled to lift up so that the side of the cork sheet body 8 with the colloid contacts the rotating musical instrument body 7, so that the cork sheet body 8 with the colloid can be rounded in the circumferential direction of the musical instrument. At the same time, the rotating moving part 66 in the swinging lifting mechanism 6, which is opposite to the rotation direction of the musical instrument pressing and rotating assembly 10, can better assist the cork sheet body 8 with the colloid to move toward the musical instrument body 7 and form it into a circle on the musical instrument body 7.

[0045] Of course, if both ends of the instrument body 7 need to be rounded, two swing-type lifting mechanisms 6 are provided, and the two cork sheet bodies 8 are placed on the corresponding swing-type lifting mechanisms 6 respectively, and then the above-mentioned rounding and forming action is repeated.

[0046] Alternatively, if both ends of the instrument body 7 need to be rounded, the swing-type lifting mechanism 6 is set as one, and a cork sheet body 8 is placed on the swing-type lifting mechanism 6. When one end of the instrument body 7 is completed, the instrument body 7 is disassembled and turned 180° to perform the rounding operation of the other end, and the processing can also be completed.

[0047] The working principle of this embodiment is as follows:

[0048] A method for forming a circle of cork pieces for the end of a musical instrument, using a device for forming a circle of cork pieces for the end of a musical instrument, and the method for forming a circle comprises the following steps:

[0049] S1. A first inclined surface 80 is provided on one end of one surface of the cork sheet body 8 provided with the adhesive, a second inclined surface 81 is provided on the other end of the other surface of the cork sheet body 8, and two corners of one surface of the cork sheet body 8 are chamfered, and the adhesive is applied to one surface of the cork sheet body 8;

[0050] S2. Place the cork sheet body 8 in S1 with the colloid facing upwards on the swinging lifting mechanism 6, then assemble the musical instrument body 7 to the musical instrument tightening rotating assembly 10, and at least one end of the cork sheet body 8 is located directly below the corresponding end of the musical instrument body 7 and a variable distance is left between the cork sheet body 8 and the musical instrument body 7; the variable distance is a distance at an acute angle.

[0051] S3, canceling the variable spacing in S2, so that the cork sheet body 8 contacts the instrument body 7;

[0052] S4. Start the instrument pressing rotating assembly 10 and drive the instrument body 7 to rotate. During the rotation, the colloid on the cork sheet body 8 adheres to the outer peripheral surface of the corresponding end of the instrument body 7. When the first inclined surface 80 and the second inclined surface 81 are aligned and fixed together, the cork sheet body 8 is formed into a circle on the instrument body 7.

[0053] After the cork sheet body 8 is assembled into a circle on the instrument body 7, it is rotated at least once.

[0054] The matching connection between the first bevel 80 and the second bevel 81 avoids the phenomenon of the two ends being disengaged due to the small connection area of ​​the ends, thereby ensuring the sealing performance. The chamfer can be used to store the glue overflowed when squeezing the cork sheet body 8.

[0055] Example 2, as Figure 1-Figure 5 As shown, the swing-type lifting mechanism 6 includes a swing arm 62 hinged at one end to the operating table 1 and in a tilted downward state under normal circumstances, and a placement groove 64 for placing the cork sheet body 8 is provided on the upper surface of the swing arm 62. A spacing cancellation component 63 for driving the swing arm 62 to swing up and down is provided on the operating table 1. The cantilever end of the swing arm 62 leaves a variable spacing with the instrument body 7, and the rotating moving member 66 at least partially protrudes from the bottom of the placement groove 64 and is located directly below the corresponding end of the instrument body 7. The upper surface of the cork sheet body 8 is evenly coated with colloid, and then the cork sheet body 8 is placed in the placement groove 64. The instrument body 7 is fixed and rotated by the instrument pressing and rotating component 10. The swing arm 62 is then driven by the spacing cancellation component 63 to swing upward and contact the rotating instrument body 7. At the moment of contact, the rotating instrument body 7 can round the cork sheet body 8 with colloid on the instrument body 7.

[0056] like Figure 3 As shown, the rotating moving member 66 is a freely rotating roller, which can better realize the movement of the cork sheet body 8 toward the instrument body 7, and further facilitate the cork sheet body 8 to be formed into a circle on the instrument body 7;

[0057] like Figure 3 As shown, on either side of the end of the swing arm 62 where the rotary member 66 is located, there are upwardly extending cork width-direction stoppers 65 shaped to resemble at least a portion of the circumference of the instrument body 7. The cork width-direction stoppers 65 have arcuate grooves, with a height gap between the lowest point of the arcuate groove and the highest point of the rotary member 66. The thickness of the cork is greater than this height gap. Specifically, the cork width-direction stoppers 65 have arcuate notches, with a soft layer, such as rubber, applied over the arcuate notches to prevent the cork width-direction stoppers 65 from damaging the instrument body.

[0058] like Figure 3 As shown, the bottom of one end of the placement groove 64 where a rotating moving part 66 is provided has an upwardly extending track guide slope 67, which can more effectively assemble the cork sheet body 8 into a circle on the instrument body 7; the track guide slope 67 plays a guiding role for the cork sheet body 8 during the circle forming.

[0059] like Figure 5As shown, the swing arm 62 is movably connected to the fixing base 61 fixed on the operating table 1 through a hinge structure, and at least a portion of the spacing cancellation component 63 extends out of the upper surface of the operating table 1 and is hingedly connected to the swing arm 62. The fixing base 61 and the spacing cancellation component 63 make the swing arm 62 suspended. The swing arm 62 is driven up and down by the spacing cancellation component 63. The spacing cancellation component 63 is a cylinder. The up and down swinging of the swing arm 62 is achieved by raising and lowering the cylinder. When the cork sheet body 8 needs to be formed into a circle on the instrument body 7, the cylinder is raised. When the circle forming is completed, the cylinder is lowered to facilitate the next round of circle forming work.

[0060] like Figure 1 As shown, the musical instrument abutting rotating assembly 10 includes an adjusting seat 3 and a driving seat 2, which are arranged on an operating table 1, a first rotating shaft 4 is arranged on the driving seat 2, and a second rotating shaft 5 is arranged on the adjusting seat 3. The driving seat 2 can adopt a servo motor;

[0061] like Figure 2 As shown, the operating table 1 is further provided with a positioning baffle 9, which is arranged at one end close to the adjustment seat 3. The adjustment seat 3 can be adjusted along the length direction of the operating table 1. The position adjustment of the adjustment seat 3 relative to the drive seat 2 can be adjusted by a screw drive assembly in the prior art.

[0062] like Figure 4 As shown, the first rotating shaft 4 and the driving seat 2 are detachably connected, which facilitates the replacement of the first rotating shaft 4, thereby better adapting to and fixing musical instruments of different sizes and types;

[0063] like Figure 4 As shown, a threaded hole 41 is provided on the first rotating shaft 4, and a fastening screw 42 is provided in the threaded hole 41. The first rotating shaft 4 is inserted into the output end of the driving seat 2 and is fixed to the output end of the driving seat 2 by the fastening screw 42, so as to facilitate installation and disassembly between the first rotating shaft 4 and the driving seat 2.

[0064] Embodiment 3: Based on the above-mentioned embodiment 1 or embodiment 2, this embodiment further discloses the following solution: the circumferential surface of the rotating moving part 66 is provided with an embossed pattern to increase friction.

[0065] Example 4, based on the above-mentioned Example 2 or Example 3, as Figure 7 or Figure 8 As shown, a resistance component is provided on the track guiding inclined surface 67, which elastically presses against the outer peripheral surface of the cork sheet body 8 assembled and formed on the instrument body 7. The resistance component can play a pre-compression and damping role on the cork sheet body 8 on the instrument body 7 when the cork sheet body 8 is initially assembled and formed, so as to prevent the cork sheet body 8 from falling off the instrument body 7.

[0066] Specifically, the first type: Figure 7 As shown, the resistance assembly of this embodiment includes an arcuate elastic piece 68 that protrudes toward the rotating member 66. The lower end of the arcuate elastic piece 68 is fixed to the track guide inclined surface 67, while the upper end of the arcuate elastic piece 68 is free. The arcuate elastic piece 68 is formed by bending a metal elastic plate into an arc shape. At the same time, the arcuate elastic piece 68 is fixed to the track guide inclined surface 67 by screws or other means. The track guide inclined surface 67 and the arcuate elastic piece 68 form a pressure relief space.

[0067] Secondly, the curved elastic piece 68 is in tangential contact with the outer circumference of the cork sheet body 8. For example, the first inclined surface 80 pre-contacts the curved elastic piece 68, and the curved elastic piece 68 contacts the first inclined surface 80 along the width direction of the cork sheet body 8. During this process, the elastic force of the curved elastic piece 68 creates a damping force on the first inclined surface 80, which can, to a certain extent, strengthen the adhesion of the cork sheet body 8 to the instrument body 7.

[0068] like Figure 8 As shown, the second type: the abutment assembly includes a plurality of obliquely arranged pins, and each pin is provided with a contact wheel 69, which is a rubber wheel. The contact wheel 69 is in tangential contact with the outer peripheral surface of the cork sheet body 8.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for forming a cork sheet into a round shape at the end of a musical instrument, comprising an operating table (1), on which a musical instrument pressing and rotating assembly (10) is arranged, characterized in that: At least one swing-type lifting mechanism (6) for placing a cork sheet body (8) is provided on the operating table (1), at least a portion of the swing-type lifting mechanism (6) is located directly below at least one end of the instrument body (7) pressed by the instrument pressing rotating assembly (10) and has a variable spacing with the instrument body (7), and at least a portion of the swing-type lifting mechanism (6) is provided with a rotating moving part (66) rotating in the opposite direction to the instrument pressing rotating assembly (10), the instrument pressing rotating assembly (10) and the swing-type lifting mechanism (6) make the cork sheet body (8) form a circle around at least one end of the instrument body (7); and when the circle is formed, the thickness of any position of the cork sheet body (8) is greater than the vertical spacing between the highest position of the instrument body (7) and the rotating moving part (66); The swing-type lifting mechanism (6) includes a swing arm (62) hinged at one end to the operating table (1), and a placement groove (64) for placing the cork sheet body (8) is provided on the upper surface of the swing arm (62), and a spacing cancellation component (63) for driving the swing arm (62) to swing up and down is provided on the operating table (1), a cantilever end of the swing arm (62) and the instrument body (7) have a variable spacing, and the rotating moving part (66) at least partially protrudes from the bottom of the placement groove (64) and is located directly below the corresponding end of the instrument body (7); The swing arm (62) is provided with a cork sheet width direction limiting portion (65) extending upward and imitating at least a part of the circumference of the instrument body (7) on both sides of one end of the rotating moving part (66), the cork sheet width direction limiting portion (65) having a circular arc notch, and a soft layer provided on the circular arc notch; the placement groove (64) is provided with a track guide inclined surface (67) extending upward in an arc shape at the bottom of one end of the rotating moving part (66); and a resistance component is provided on the track guide inclined surface (67) for elastically pressing against the outer peripheral surface of the cork sheet body (8) formed on the instrument body (7).

2. The device for forming a round shape of cork pieces at the end of a musical instrument according to claim 1, characterized in that: The rotating moving part (66) is a freely rotating roller.

3. The device for forming a round shape of cork pieces at the end of a musical instrument according to claim 1, characterized in that: The swing arm (62) is movably connected to a fixed seat (61) fixed on the operating table (1) through a hinge structure, and at least a portion of the spacing cancellation component (63) extends out from the upper surface of the operating table (1) and is hingedly connected to the swing arm (62). The fixed seat (61) and the spacing cancellation component (63) enable the swing arm (62) to be suspended.

4. The device for forming a round shape of cork pieces at the end of a musical instrument according to claim 1, characterized in that: The musical instrument pressing rotation assembly (10) comprises an adjustment seat (3) and a driving seat (2), wherein the adjustment seat (3) and the driving seat (2) are arranged on the operating table (1), a first rotating shaft (4) is arranged on the driving seat (2), and a second rotating shaft (5) is arranged on the adjustment seat (3).

5. The device for forming a round shape of cork pieces at the end of a musical instrument according to claim 4, characterized in that: The operating table (1) is also provided with a positioning baffle (9), which is arranged at one end close to the adjustment seat (3), and the adjustment seat (3) can be adjusted along the length direction of the operating table (1).

6. The device for forming a round shape of cork pieces at the end of a musical instrument according to claim 4, characterized in that: The first rotating shaft (4) and the driving seat (2) are detachably connected.

7. A method for forming a cork sheet for the end of a musical instrument, using the device for forming a cork sheet for the end of a musical instrument according to any one of claims 1 to 6, characterized in that: The circle forming method comprises the following steps: S1, a cork sheet body (8) is provided with a first inclined surface (80) at one end of a surface of the colloid, a second inclined surface (81) is provided at the other end of another surface of the cork sheet body (8), and two corners of one surface of the cork sheet body (8) are chamfered, and the colloid is applied to one surface of the cork sheet body (8); S2, placing the cork sheet body (8) in S1 with the colloid facing upward on the swing-type lifting mechanism (6), and then assembling the instrument body (7) on the instrument pressing and rotating assembly (10), and at least one end of the cork sheet body (8) is located directly below the corresponding end of the instrument body (7) and a variable distance is left between the cork sheet body (8) and the instrument body (7); S3, canceling the variable spacing in S2, so that the cork sheet body (8) contacts the instrument body (7); S4. Start the instrument pressing rotating assembly (10) and drive the instrument body (7) to rotate. During the rotation, the colloid on the cork sheet body (8) adheres to the outer peripheral surface of the corresponding end of the instrument body (7). When the first inclined surface (80) and the second inclined surface (81) are matched and fixed together, the cork sheet body (8) is formed into a circle on the instrument body (7).

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