Hole drawing device for pipe body of wind instrument

Abstract

The utility model belongs to the technical field of musical instrument manufacturing, and particularly relates to a blow pipe musical instrument pipe body hole drawing device which comprises a supporting platform, a positioning shaft clamped and fixed through the end of a fixing base is arranged on the supporting platform, and a forming module is embedded in the arc face of the positioning shaft in the radial direction. A limiting top shaft is arranged above the positioning shaft, the end face of the limiting top shaft abuts against the arc face of the positioning shaft in a radial fit mode, a hole pulling shaft moving up and down is arranged above the limiting top shaft, and the hole pulling shaft axially penetrates through the limiting top shaft and extends into the positioning shaft to be connected with the forming module. The positioning shaft is sleeved with the pipe fitting, the pipe fitting holes correspond to the forming modules on the positioning shaft in a one-to-one mode, the pipe body structure can be prevented from being extruded by a fixing clamp to deform in the hole pulling process, the forming modules are arranged in the embedding grooves, and the hole pulling shaft is guided to stretch into the forming modules through the limiting jacking shafts.

Description

Technical Field

[0001] This utility model belongs to the field of musical instrument manufacturing technology, specifically relating to a device for removing holes from the body of a wind instrument. Background Technology

[0002] The key system of wind instruments is the key mechanism for controlling pitch and timbre. Depending on the type of instrument, the key structure and function vary. Pitch is primarily adjusted by changing the length of the pipe, with the key system playing a crucial role. Modern brass instruments use metal linkages and universal joints in their key systems, improving structural stability and key response speed, reducing intonation problems caused by wear, and featuring a more ergonomic key layout that enhances playing comfort and flexibility.

[0003] A hole-pulling device for an oil separator, disclosed in patent CN209189565U, belongs to the field of hole-pulling. It includes a hole-pulling machine and a pulling die. The hole-pulling machine includes a frame and a hole-pulling device mounted on the frame. The hole-pulling device includes a mounting plate mounted on the upper plate of the frame and a motor. A groove is provided in the mounting plate along the X-axis direction. A slider is mounted on the motor and inserted into the groove, matching its shape. The pulling die includes a pulling head and a fixed mold with an arc groove mounted on the upper plate of the frame. A circular hole is provided in the arc groove. The front end of the pulling head has a shrinking structure, and its tail end is equipped with a pulling rod. When the hole-pulling device is working, the output shaft of the motor passes through the circular hole and works in conjunction with the pulling head. This invention can accurately and efficiently perform hole-pulling and flange-flanging work on oil separators, producing through-hole flanges with uniform wall thickness and consistent height, which is beneficial for subsequent processing of the oil separator.

[0004] In the above scheme, the puller head is inserted into the oil separator through the puller rod, so that the front end of the puller head is aligned with the center of the hole to be processed. The motor is started so that the front end of the motor output shaft passes through the round hole and the hole to be processed and is threadedly connected to the puller head. However, the puller head connected by the puller rod lacks stability when it is inserted into the interior. Especially when it is threadedly connected to the front end of the shaft, the puller head is easily deflected by the axial and circumferential driving, thus hindering the accuracy of the alignment between the puller head and the hole to be processed. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing a device for removing holes from the body of a wind instrument that can solve the above-mentioned technical issues.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hole-pulling device for a wind instrument includes a support platform. A positioning shaft is fixed by clamping the end of a fixed seat on the support platform. A forming module is radially embedded on the arc surface of the positioning shaft. A limiting top shaft is provided above the positioning shaft, with its end face radially engaging with the arc surface of the positioning shaft. A hole-pulling shaft that moves up and down is provided above the limiting top shaft. The hole-pulling shaft extends axially through the limiting top shaft and into the positioning shaft, connecting with the forming module.

[0008] In the aforementioned device for drawing holes in the body of a wind instrument, a limiting bracket is provided above the positioning shaft, and the limiting top shaft is movably inserted into a guide through hole vertically opened at the top of the limiting bracket, with its lower end radially engaging and abutting against the arc surface of the positioning shaft.

[0009] In the aforementioned device for pulling holes in the body of a wind instrument, the lower end of the limiting top shaft is provided with an arc-shaped limiting surface, which is matched with the arc surface of the positioning shaft at a position corresponding to the forming module.

[0010] In the aforementioned device for drawing holes in the body of a wind instrument, a module cavity is provided on the limiting surface, and the shape of the module cavity matches that of the forming module.

[0011] In the aforementioned device for pulling holes in the body of a wind instrument, a vertically swinging top shaft lever is provided on the limiting bracket. The swinging end of the top shaft lever is connected to the limiting top shaft through a linkage rod, driving the lower end face of the limiting top shaft to abut against the positioning shaft.

[0012] In the aforementioned device for pulling holes in the body of a wind instrument, a horizontally swinging top shaft pressure plate is provided at the top of the limiting bracket. The top shaft pressure plate swings to above the top shaft lever and presses against the upper end of the top shaft lever, so that the lower end of the top shaft lever remains in contact with the arc surface of the positioning shaft.

[0013] In the aforementioned device for pulling holes in the body of a wind instrument, a touch sensor is provided on the limiting bracket to control the movement of the top shaft pressure plate. The touch sensor is triggered by the swing of the top shaft lever.

[0014] In the aforementioned device for removing holes from the body of a wind instrument, a polygonal module groove is radially formed on the arc surface of the positioning shaft, and the forming module is fitted into the module groove with a clearance, wherein the height of the forming module is less than the depth of the module groove.

[0015] In the aforementioned device for drawing holes in the body of a wind instrument, the forming module is provided with a threaded hole perpendicular to the bottom of the module groove, the threaded hole is threadedly connected to the end of the drawing shaft that can rotate circumferentially, and an annular forming surface is provided around the threaded hole.

[0016] In the aforementioned device for removing holes from the body of a wind instrument, a limit block is provided on the side of the positioning shaft near the fixed base.

[0017] The advantages of this utility model are:

[0018] The fitting is sleeved on the outside of the positioning shaft, so that the hole of the fitting corresponds one-to-one with each forming module on the positioning shaft. This can prevent the tube body structure from being deformed by the pressure of the fixing fixture during the hole pulling. The forming module is embedded in the groove and a limiting top shaft guides the hole pulling shaft to extend into it, ensuring that the hole pulling shaft and the forming module can be accurately connected. This also allows the forming module to evenly squeeze the hole of the fitting. At the same time, the limiting top shaft abuts against the periphery of the hole of the fitting to prevent the hole pulling flange from causing the tube body to deform together, thereby improving the hole pulling quality of the tube body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the upper end of the limiting top shaft of this utility model.

[0021] Figure 3 This is a schematic diagram of the fitting of the lower end of the limiting top shaft of this utility model.

[0022] Figure 4 This is a schematic diagram of the limiting bracket structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the molding module structure of this utility model.

[0024] Figure 6 This is a schematic diagram of the limiting top shaft structure of this utility model.

[0025] In the diagram, there are: support platform 1, fixed seat 11, limit bracket 12, positioning shaft 2, forming module 21, module slot 22, threaded hole 23, forming surface 24, limit block 25, limit top shaft 3, limit surface 31, module cavity 32, top shaft lever 33, top shaft pressure plate 34, touch sensor 35, and hole-pulling shaft 4. Detailed Implementation

[0026] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.

[0027] like Figures 1-6As shown, the hole-pulling device for the body of a wind instrument includes a support platform 1. A positioning shaft 2 is fixed on the support platform 1 by clamping the end of a fixing seat 11. A forming module 21 is radially embedded on the arc surface of the positioning shaft 2. A limiting top shaft 3 is provided above the positioning shaft 2, with its end face radially engaging with the arc surface of the positioning shaft 2. A hole-pulling shaft 4 that moves up and down is provided above the limiting top shaft 3. The hole-pulling shaft 4 extends axially through the limiting top shaft 3 and into the positioning shaft 2 to connect with the forming module 21.

[0028] That is, the fitting is sleeved on the outside of the positioning shaft, so that the hole of the fitting corresponds to each forming module on the positioning shaft. This can prevent the tube body structure from being deformed by the pressure of the fixing fixture during the hole pulling. The forming module is embedded in the groove and has a limiting top shaft to guide the hole pulling shaft to extend into it, ensuring that the hole pulling shaft and the forming module can be accurately connected, and that the forming module can evenly squeeze the hole of the fitting. At the same time, the limiting top shaft abuts against the periphery of the hole of the fitting to prevent the hole pulling flange from causing the tube body to deform together, thereby improving the hole pulling quality of the tube body.

[0029] In this embodiment, a limiting bracket 12 is provided above the positioning shaft 2, and the limiting top shaft 3 is movably inserted into the guide through hole vertically opened at the top of the limiting bracket 12 and its lower end is radially engaged with and abuts against the arc surface of the positioning shaft 2.

[0030] The limiting bracket 12 spans above the positioning shaft 2, and a through hole with the same diameter as the limiting top shaft 3 is opened on the top of the limiting bracket 12, so that the limiting top shaft 3 can move stably up and down in the through hole. At the same time, the lower end face abuts against the surface of the tube sleeve on the positioning shaft 2, so that the forming module 21 will not lift the tube upward when it rises to pull the hole.

[0031] In this embodiment, the lower end of the limiting top shaft 3 is provided with an arc-shaped limiting surface 31, which is matched with the arc surface of the positioning shaft 2 and the position corresponding to the forming module 21.

[0032] The limiting surface 31 fits perfectly against the surface of the pipe fitting sleeved on the positioning shaft 2, evenly distributing the resisting force to prevent the limiting top shaft 3 from squeezing and damaging the surface of the pipe fitting when the hole is pulled out.

[0033] In this embodiment, a module cavity 32 is provided on the limiting surface 31, and the shape of the module cavity 32 matches that of the molding module 21.

[0034] When the forming module 21 is pulled out, it will partially protrude from the hole of the pipe, so that the hole forms a flange effect. Therefore, a space with the same shape as the protruding part of the forming module 21 should be opened on the limiting surface 31. When the forming module 21 enters the module cavity 32, the inner wall of the module cavity 32 and the inner and outer sides of the limiting surface 31 jointly squeeze and clamp the outer flange, so that the forming shape of the flange is more standardized and uniform.

[0035] In this embodiment, the limiting bracket 12 is provided with a longitudinally swinging top shaft lever 33. The swinging end of the top shaft lever 33 is connected to the limiting top shaft 3 through a linkage rod, driving the lower end face of the limiting top shaft 3 to abut against the positioning shaft 2.

[0036] The top shaft lever 33 is driven by a rotary cylinder inside the limiting bracket 12. When the end of the top shaft lever 33 swings upward, it drives the limiting top shaft 3 to rise, so that the lower end of the limiting top shaft 3 is disengaged from the pipe, thereby allowing the positioning shaft 2 to drive the pipe to move axially into the next hole-pulling position. When the end of the top shaft lever 33 swings downward, it drives the limiting top shaft 3 to fall, so that the lower end of the limiting top shaft 3 abuts against the pipe to stably pull the hole.

[0037] In this embodiment, the top of the limiting bracket 12 is provided with a horizontally swinging top shaft pressure plate 34. The top shaft pressure plate 34 swings to above the top shaft lever 33 and presses against the upper end of the top shaft lever 33, so that the lower end of the top shaft lever 33 is kept in contact with the arc surface of the positioning shaft 2.

[0038] When preparing to pull the hole, the limiting top shaft 3 will move down and its lower end will abut against the pipe fitting. At this time, the top shaft pressure plate 34 will be driven by the rotary cylinder in the limiting bracket 12 to swing to the upper side of the limiting top shaft 3 to block and prevent the limiting top shaft 3 from being driven when pulling the hole.

[0039] In this embodiment, the limiting bracket 12 is provided with a touch sensor 35 that controls the movement of the top shaft pressure plate 34. The touch sensor 35 is triggered by the swing of the top shaft lever 33.

[0040] When the top shaft lever 33 swings upward, part of the rod height exceeds the top of the limit bracket 12, which will block the swing path of the top shaft pressure plate 34. Therefore, a touch sensor 35 is set to detect the position of the top shaft lever 33 and the limit top shaft 3 to avoid damage caused by collision between moving parts.

[0041] In this embodiment, a polygonal module groove 22 is radially formed on the arc surface of the positioning shaft 2, and the forming module 21 is fitted into the module groove 22 with a clearance, and the height of the forming module 21 is less than the depth of the module groove 22.

[0042] The fitting needs to be mounted on the positioning shaft 2 for processing. The forming module 21 cannot be higher than the slot of the module groove 22. The inner wall of the module groove 22 is set as a polygon similar to the forming module 21 to restrict the rotation of the forming module 21, so that the threaded connection between the forming module 21 and the hole-pulling shaft 4 is smoother.

[0043] In this embodiment, the molding module 21 is provided with a threaded hole 23 perpendicular to the bottom of the module slot 22. The threaded hole 23 is threadedly connected to the end of the circumferentially rotatable hole-pulling shaft 4. An annular molding surface 24 is provided around the threaded hole 23.

[0044] The threaded hole 23 is perpendicular to the bottom of the groove, which can be well aligned with the end of the pull hole shaft 4 for connection, thus ensuring that the forming module 21 rises radially along the pipe; the forming surface 24 and the inner wall of the module cavity 32 jointly squeeze and clamp the outer flange, further improving the quality of the flange after forming.

[0045] In this embodiment, a limit block 25 is provided on the side of the positioning shaft 2 near the fixed base 11.

[0046] One end of the fitting has a notch that can be inserted into and matched with the limiting block 25, so that the hole of the fitting can accurately correspond to the module slot 22 and the forming module 21 therein.

[0047] The fixed gripper of the fixed base 11 is connected to a linear cylinder for axial extension and retraction of the positioning shaft 2; the hole-pulling shaft 4 is driven and connected by a robotic arm installed on the support platform 1. The fixed gripper of the robotic arm is connected in series with a rotary cylinder and a linear cylinder, so that the hole-pulling shaft 4 can complete the up and down hole-pulling action and the threaded connection action with the forming module 21.

[0048] All the cylinders used for driving were purchased commercially.

[0049] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A device for the extraction of a bore from a body of a wind instrument, comprising a support platform (1), characterised in that, The support platform (1) is provided with a positioning shaft (2) that is clamped and fixed by the end of the fixing seat (11). A forming module (21) is radially embedded on the arc surface of the positioning shaft (2). A limiting top shaft (3) is provided above the positioning shaft (2) with its end face radially engaged with the arc surface of the positioning shaft (2). A hole-pulling shaft (4) that moves up and down is provided above the limiting top shaft (3). The hole-pulling shaft (4) passes through the limiting top shaft (3) and extends into the positioning shaft (2) to connect with the forming module (21).

2. A mouthpiece hole for a wind instrument according to claim 1, wherein A limiting bracket (12) is provided above the positioning shaft (2). The limiting top shaft (3) is movably inserted into the guide through hole vertically opened at the top of the limiting bracket (12) and its lower end is radially engaged with the arc surface of the positioning shaft (2).

3. The mouthpiece hole of a wind instrument device according to claim 2, wherein, The lower end of the limiting top shaft (3) is provided with an arc-shaped limiting surface (31), which is matched with the arc surface of the positioning shaft (2) and the position corresponding to the forming module (21).

4. The mouthpiece hole of a wind instrument of claim 3, wherein, The limiting surface (31) has a module cavity (32) that matches the shape of the molding module (21).

5. The mouthpiece hole of claim 2, wherein, The limiting bracket (12) is provided with a longitudinally swinging top shaft lever (33). The swinging end of the top shaft lever (33) is connected to the limiting top shaft (3) through a linkage rod, driving the lower end face of the limiting top shaft (3) to abut against the positioning shaft (2).

6. The mouthpiece hole of a wind instrument of claim 5, wherein, The top of the limiting bracket (12) is provided with a horizontally swinging top shaft pressure plate (34). The top shaft pressure plate (34) swings to the top shaft lever (33) and presses against the upper end of the top shaft lever (33), so that the lower end of the top shaft lever (33) is kept in contact with the arc surface of the positioning shaft (2).

7. The mouthpiece hole of a wind instrument of claim 6, wherein, The limiting bracket (12) is provided with a touch sensor (35) for controlling the movement of the top shaft pressure plate (34), and the touch sensor (35) is triggered by the swing of the top shaft lever (33).

8. The mouthpiece hole of claim 1, wherein, The positioning shaft (2) has a polygonal module slot (22) radially opened on the arc surface. The forming module (21) is fitted into the module slot (22) with a gap. The height of the forming module (21) is less than the depth of the module slot (22).

9. The mouthpiece hole of a wind instrument of claim 8, wherein, The molding module (21) is provided with a threaded hole (23) perpendicular to the bottom of the module slot (22). The threaded hole (23) is threadedly connected to the end of the circumferentially rotatable hole-pulling shaft (4). An annular molding surface (24) is provided around the threaded hole (23).

10. The device for pulling holes in the body of a wind instrument according to claim 1, characterized in that, A limit block (25) is provided on the side of the positioning shaft (2) near the fixed seat (11).

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