Musical instrument welding and fixing jig

Abstract

The utility model relates to the technical field of musical instrument manufacturing, in particular to a musical instrument welding and fixing jig which comprises a base platform, a profiling base is arranged on the base platform, a turnover support is arranged on one side of the profiling base, and the movable end of the turnover support is detachably connected with the suspended end of an angle iron frame arranged on the other side of the profiling base. The overturning support is provided with a profiling pressing plate corresponding to a profiling base below the profiling pressing plate, a workpiece fixing position is formed between the profiling pressing plate and the profiling base, and the base table is further provided with a weldment fixing assembly with one end pointing to the workpiece fixing position. The profiling base provides a stable foundation for a workpiece before the workpiece is fixed, the workpiece is preliminarily positioned according to the profiling groove and does not need to be additionally supported, the overturning support can be operated to enable the overturning plate to abut against the angle iron frame to be connected to form a frame crossing the workpiece, then the profiling pressing plate on the frame tightly presses the workpiece from the upper portion, and the profiling pressing plate and the profiling base vertically clamp the workpiece for fixing.

Description

Technical Field

[0001] This utility model belongs to the field of musical instrument manufacturing technology, specifically relating to a musical instrument welding and fixing fixture. Background Technology

[0002] The main products of the musical instrument manufacturing industry are musical instruments used in the music world—instruments that enable the re-creation of musical art. The production of musical instruments differs from the production of general industrial products. It not only requires products to have a reasonable and aesthetically pleasing appearance, but also excellent acoustic quality, including timbre, musicality, and precise pitch. Therefore, the selection of materials is extremely rigorous.

[0003] A welding and positioning fixture for an automotive dashboard bracket, disclosed in patent CN213196279U, relates to the field of dashboard bracket welding technology. It includes a worktable, with a motor fixedly connected to one side. A first bevel gear is fixedly connected to the top output shaft of the motor. A connecting rod is movably connected to one side of the worktable, with a second bevel gear fixedly connected to one end of the connecting rod. The first bevel gear and the connecting rod are connected via a transmission connection through the second bevel gear. A third bevel gear is fixedly connected to the other end of the connecting rod. A telescopic column is fixedly connected to one end of the bottom of the worktable. This automotive dashboard bracket welding and positioning fixture, by setting a second threaded rod structure at one end of the support rod, allows the support rod to extend or shorten under the action of the second threaded rod by rotating the motor. This adjusts the height of the worktable, facilitating the installation of dashboard brackets of different heights, reducing work difficulty, and improving work efficiency.

[0004] In the above solution, although the height and angle of the instrument panel bracket can be adjusted, the completed workpiece can only be removed by loosening the adjustment mechanism each time the workpiece is replaced, and the new workpiece must be fixed and adjusted again. Furthermore, the horizontal opening and closing of the clamps lacks longitudinal reference support, which makes the operation not only cumbersome but also prone to errors. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned problems by providing a musical instrument welding and fixing fixture that can solve the aforementioned technical issues.

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

[0007] A musical instrument welding fixture includes a base, on which a contour base is provided. A flip bracket is provided on one side of the contour base. The movable end of the flip bracket is detachably connected to the suspended end of an angle iron frame provided on the other side of the contour base. A contour pressure plate is provided on the flip bracket corresponding to the contour base below and forming a workpiece fixing position between the two. A welding fixture component with one end pointing to the workpiece fixing position is also provided on the base.

[0008] In the aforementioned musical instrument welding and fixing fixture, the flipping bracket includes a flipping support and a flipping plate with hinged ends. The flipping support is set on a base platform on one side of the contour base, and the flipping plate is connected to the angle iron frame on the side away from the hinge and is horizontally mounted on the contour base.

[0009] In the aforementioned musical instrument welding fixture, the flip plate is threaded with fastening bolts from top to bottom, and the fastening bolts are movably connected to the lower part of the flip plate and the conforming pressure plate.

[0010] In the aforementioned musical instrument welding and fixing fixture, the conforming pressure plate is provided with a snap-fit ​​groove, and the lower end of the fastening bolt is provided with a snap-fit ​​connector that is axially connected to the snap-fit ​​groove. The snap-fit ​​connector and the inner wall of the snap-fit ​​groove have an adjustable gap.

[0011] In the aforementioned musical instrument welding and fixing fixture, the flip support has an angle limiting surface near the hinge end that abuts against the flip plate, so that when the flip plate flips towards the contour base, it stays at the maximum angle parallel to the base.

[0012] In the aforementioned musical instrument welding and fixing fixture, the angle iron frame includes a longitudinal support rod and a transverse support rod connected at right angles. The longitudinal support rod is set on a base platform on one side of the conformal base, and the transverse support rod is connected to the flip bracket by connecting bolts on the side away from the longitudinal support rod.

[0013] In the aforementioned musical instrument welding fixture, the transverse support rod is rotatably connected to the upper end face of the longitudinal support rod, allowing the transverse support rod to swing horizontally by relying on the longitudinal support rod.

[0014] In the aforementioned musical instrument welding and fixing fixture, a rotating handle is detachably inserted into the transverse support rod for swinging the transverse support rod, and one end of the rotating handle can rotate the connecting bolt.

[0015] In the aforementioned musical instrument welding fixture, the welding part fixing assembly includes a positioning sleeve and a support shaft. The positioning sleeve is disposed on the base, and the support shaft is inserted into the positioning sleeve. A welding part slot is provided at one end of the support shaft facing the workpiece fixing position.

[0016] In the aforementioned musical instrument welding fixture, the positioning sleeve has a radially threaded through hole, and a positioning bolt is provided in the threaded through hole, with the end of the positioning bolt abutting against the arc surface of the abutting shaft.

[0017] The advantages of this utility model are:

[0018] The contour base provides a stable foundation for fixing the workpiece. The workpiece is initially positioned according to the contour groove without additional support. The flipping bracket can then be operated to place the flipping plate against the angle iron frame, forming a frame spanning the workpiece. Subsequently, the contouring pressure plate on the frame presses the workpiece down from above, clamping it between the contour base and the workpiece for fixation. Simultaneously, a welding component fixing device is configured on the base to position the welding component on the workpiece, effectively fixing the relative position of the workpiece and the welding component while ensuring convenient and quick operation. 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 support structure of this utility model.

[0021] Figure 3 This is a schematic diagram of a snap-fit ​​connector structure according to the present invention.

[0022] Figure 4 This is a schematic diagram of another type of snap-fit ​​connector structure of this utility model.

[0023] In the diagram, the components are: base 1, contour base 11, flip bracket 2, contour pressure plate 21, flip support 22, flip plate 23, fastening bolt 24, snap-fit ​​groove 25, snap-fit ​​connector 26, angle limiting surface 27, angle iron frame 3, longitudinal support rod 31, transverse support rod 32, connecting bolt 33, rotating handle 34, weldment fixing assembly 4, positioning sleeve 41, abutment shaft 42, weldment slot 43, and positioning bolt 44. Detailed Implementation

[0024] 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.

[0025] like Figures 1-4 As shown, the musical instrument welding fixture includes a base 1, on which a contour base 11 is provided. A flip bracket 2 is provided on one side of the contour base 11. The movable end of the flip bracket 2 is detachably connected to the suspended end of an angle iron frame 3 provided on the other side of the contour base 11. A contour pressure plate 21 is provided on the flip bracket 2 corresponding to the contour base 11 below and forming a workpiece fixing position between the two. A welding fixture 4 with one end pointing to the workpiece fixing position is also provided on the base 1.

[0026] In other words, the contour base is machined according to the outline of the wind instrument tube, providing lower support and positional constraints. The workpiece is initially positioned according to the contour groove without additional support. The flipping bracket can then be operated to place the flipping plate against the angle iron frame to form a frame spanning the workpiece. Subsequently, the contouring pressure plate on the frame presses the workpiece down from above, clamping it between the contour base and the workpiece for fixation. Simultaneously, a welding component fixing device is configured on the base to position the welding component on the workpiece, effectively fixing the relative position of the workpiece and the welding component while ensuring convenient and quick operation.

[0027] In this embodiment, the flip support 2 includes a flip support 22 and a flip plate 23 with hinged ends. The flip support 22 is set on the base 1 on one side of the contour base 11, and the flip plate 23 is connected to the angle iron frame 3 on the side away from the hinge and is horizontally mounted on the contour base 11.

[0028] The flip plate 23 is connected to the end of the flip support 22, which stands upright on the base 1, via a hinge, forming a component that can be flipped up and down. The length of the flip plate 23 is sufficient to cover the contoured base, ensuring stable clamping between the pressure plate and the base. After flipping one side of the base, it connects with the angle iron frame to form a closed structure, ensuring reliable positioning.

[0029] In this embodiment, the flip plate 23 is threaded with fastening bolts 24 from top to bottom, and the fastening bolts 24 are movably connected to the lower part of the flip plate 23 and the contour pressure plate 21.

[0030] The fastening bolts are threadedly engaged with the flip plate, and the lower end is rotatably engaged with the contour plate to prevent the pressure plate from rotating along with the threaded plate. The downward pressure of the contour plate on the workpiece can be adjusted by rotating the fastening bolts to change their vertical position.

[0031] In this embodiment, the contour plate 21 is provided with a snap-fit ​​groove 25, and the lower end of the fastening bolt 24 is provided with a snap-fit ​​connector 26 which is axially connected to the snap-fit ​​groove 25. The snap-fit ​​connector 26 and the inner wall of the snap-fit ​​groove 25 are provided with a movable gap.

[0032] The clamping connector 26 can be spherical or T-shaped to ensure that the contouring plate does not separate from the fastening bolts, while the movable clearance allows the contouring plate 21 to have a certain degree of mobility, so as to automatically adjust its position through the matching of the contouring concave surface with the workpiece, so that the two can make closer contact and reduce pressure concentration that could damage the workpiece.

[0033] In this embodiment, the flip support 22 is provided with an angle limiting surface 27 near the hinge end, which abuts against the flip plate 23, so that the flip plate 23 stays at the maximum angle parallel to the base 1 when it flips towards the contour base 11.

[0034] The hinged end of the flip support 22 abuts against the flip plate, preventing the flip plate from flipping more than 180° to avoid overturning, and also facilitating consistent positioning when loading and unloading materials.

[0035] In this embodiment, the angle iron frame 3 includes a longitudinal support rod 31 and a transverse support rod 32 connected at right angles. The longitudinal support rod 31 is set on the base 1 on one side of the contour base 11, and the transverse support rod 32 is connected to the flip bracket 2 on the side away from the longitudinal support rod 31 by connecting bolts 33.

[0036] The longitudinal support rod 31 is vertically mounted on the base 1, and the transverse support rod 32 is vertically connected to the upper end of the longitudinal support rod 31, maintaining parallelism with the base 1 and the flip plate 23.

[0037] In this embodiment, the transverse support rod 32 is rotatably connected to the upper end face of the longitudinal support rod 31, so that the transverse support rod 32 can swing horizontally by relying on the longitudinal support rod 31.

[0038] The rotating shaft passes vertically through the transverse support rod 32 and is connected to the upper end face of the longitudinal support rod 31, allowing the transverse support rod 32 to swing around the rotating shaft on the horizontal plane. Since the transverse support rod 32 is also located above the contour base, it may obstruct the placement path when the workpiece is placed. Therefore, the transverse support rod is designed to be rotatable to avoid the workpiece. However, the transverse support rod always maintains a horizontal relationship with the base, and can still maintain the stability of the fastening frame after being connected to the flip plate.

[0039] In this embodiment, a rotating handle 34 is detachably inserted on the transverse support rod 32 for swinging the transverse support rod 32, and one end of the rotating handle 34 is rotatably connected to the bolt 33.

[0040] The rotating handle 34 can be used as the control end when the lateral support swings, and it can also be removed to use a screwdriver to tighten or loosen bolts.

[0041] In this embodiment, the welding workpiece fixing assembly 4 includes a positioning sleeve 41 and abutting shaft 42. The positioning sleeve 41 is disposed on the base 1, and the abutting shaft 42 is inserted into the positioning sleeve 41. A welding workpiece slot 43 is provided at one end of the abutting shaft 42 facing the workpiece fixing position.

[0042] The positioning sleeve 41 is extended downward by a connecting rod and fixed to the base 1. The abutment shaft 42 is inserted in the positioning sleeve 41 and can slide axially to allow the welding groove 43 at one end to stably approach or move away from the welding point of the workpiece.

[0043] The welding part slot 43 has the same shape as the welding part, and the welding part is inserted into the welding part slot 43 from the end face of the abutment shaft 42.

[0044] Typically, the positioning sleeve 41 is tilted downward at a certain angle near the workpiece fixing position where the workpiece is placed, so that the end of the welding slot 43 of the abutment shaft 42 abuts against the workpiece welding point under the action of gravity.

[0045] In this embodiment, a threaded through hole is radially provided on the positioning sleeve 41, and a positioning bolt 44 is provided in the threaded through hole. The end of the positioning bolt 44 abuts against the arc surface of the abutment shaft 42.

[0046] After tightening the positioning bolt 44, it presses against the abutment shaft to prevent it from sliding or rotating during welding. It is usually made into contact with the hand-tightening knob and the flattening point to avoid damaging the shaft surface.

[0047] 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 musical instrument welding and fixing fixture, comprising a base (1), characterized in that, A contour base (11) is provided on the base (1), and a flip bracket (2) is provided on one side of the contour base (11). The movable end of the flip bracket (2) is detachably connected to the suspended end of the angle iron frame (3) provided on the other side of the contour base (11). A contour pressure plate (21) is provided on the flip bracket (2) corresponding to the contour base (11) below and forming a workpiece fixing position between the two. A welding fixing assembly (4) with one end pointing to the workpiece fixing position is also provided on the base (1).

2. The musical instrument welding and fixing fixture according to claim 1, characterized in that, The flipping bracket (2) includes a flipping support (22) with hinged ends and a flipping plate (23). The flipping support (22) is set on a base (1) on one side of the contour base (11). The flipping plate (23) is connected to the angle iron frame (3) on the side away from the hinge and is horizontally mounted on the contour base (11).

3. The musical instrument welding and fixing fixture according to claim 2, characterized in that, The flip plate (23) is threaded with fastening bolts (24) from top to bottom, and the fastening bolts (24) are movably connected to the lower part of the flip plate (23) and the contour pressure plate (21).

4. The musical instrument welding and fixing fixture according to claim 3, characterized in that, The contoured pressure plate (21) has a snap-fit ​​groove (25), and the lower end of the fastening bolt (24) is provided with a snap-fit ​​connector (26) which is axially connected to the snap-fit ​​groove (25). The snap-fit ​​connector (26) and the inner wall of the snap-fit ​​groove (25) have an movable gap.

5. The musical instrument welding and fixing fixture according to claim 2, characterized in that, The flip support (22) has an angle limiting surface (27) near the hinge end that abuts against the flip plate (23), so that when the flip plate (23) flips towards the contour base (11), the maximum angle stays at a position parallel to the base (1).

6. The musical instrument welding and fixing fixture according to claim 1, characterized in that, The angle iron frame (3) includes a longitudinal support rod (31) and a transverse support rod (32) connected at right angles. The longitudinal support rod (31) is set on the base (1) on one side of the contour base (11). The transverse support rod (32) is connected to the flip bracket (2) on the side away from the longitudinal support rod (31) by connecting bolts (33).

7. The musical instrument welding and fixing fixture according to claim 6, characterized in that, The transverse support rod (32) is rotatably connected to the upper end face of the longitudinal support rod (31), so that the transverse support rod (32) can swing horizontally by relying on the longitudinal support rod (31).

8. The musical instrument welding and fixing fixture according to claim 7, characterized in that, A rotating handle (34) is detachably inserted on the transverse support rod (32) for swinging the transverse support rod (32), and one end of the rotating handle (34) can rotate the connecting bolt (33).

9. The musical instrument welding and fixing fixture according to claim 1, characterized in that, The welding workpiece fixing assembly (4) includes a positioning sleeve (41) and a backing shaft (42). The positioning sleeve (41) is disposed on the base (1), and the backing shaft (42) is inserted into the positioning sleeve (41). The backing shaft (42) has a welding workpiece slot (43) at one end facing the workpiece fixing position.

10. The musical instrument welding and fixing fixture according to claim 9, characterized in that, The positioning sleeve (41) has a radially threaded through hole, and a positioning bolt (44) is provided in the threaded through hole. The end of the positioning bolt (44) abuts against the arc surface of the abutting shaft (42).

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