Piano combined type saddle and forming device

Abstract

The utility model provides a piano combined type string bridge and a forming device, comprising a first section of mid-high pitch string bridge in a mid-high pitch area of the string bridge, the tail end of the first section of mid-high pitch string bridge is connected with a second section of arc-shaped bending section, and the other end of the second section of arc-shaped bending section is in transition connection with a third section of bass string bridge in a bass area of the string bridge; and two ends of the second arc-shaped bending section are respectively overlapped and bonded with a first section of mid-high pitch saddle in a mid-high pitch area and a third section of low pitch saddle in a low pitch area in a staggered manner, so that the whole set of saddle substrate can be bonded into a whole. The continuity, the stability and the continuity of the saddle are ensured, the resonance effect of the piano resonance disc is enhanced, and the sound quality of the piano is improved; and by adopting the structure, the saddle has greater advantages in selection of saddle materials, solid wood materials can be saved, and the utilization rate of the materials can be improved.

Description

Technical Field

[0001] The utility model relates to the field of piano parts, in particular to a combined piano stringer and a forming device thereof. Background Art

[0002] At present, there are mainly two types of existing piano strings in the piano manufacturing industry. The first is the vertically assembled and formed stringer, which is composed of a vertically assembled and formed stringer bottom material bonded with a solid wood top material; the second is the profiled stringer with solid wood connection, which is composed of a traditional solid wood bottom material bonded with a solid wood top material. The stringer of the first structure has the disadvantages of difficult forming, long forming pressing time, difficult processing, high cost, large deformation, poor stability, and high quality requirements for the raw material veneer. The stringer of the second structure requires a large-width solid wood board, and has the disadvantages of difficult processing, low wood utilization rate, high cost, low production efficiency, and inability to meet the needs of mass production. The bottom material of the vertically assembled and formed stringer of the first structure needs to be pressed on the forming device for a long time to ensure the required arc bending and curved outer shape structure. In this process, in order to reduce deformation and ensure functions, high-quality and relatively high-cost wood veneer materials are also required for pressing and forming. The solid wood stringer of the second structure is processed with a large-width solid wood board, and a large number of machine equipment and tools need to be used manually to complete the outer shape. In this process, high-quality and large-width whole wood needs to be selected to complete. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned disadvantages of the prior art, and provide a combined piano stringer and a forming device thereof, which ensure the coherence, stability and continuity of the stringer, enhance the resonance effect of the piano soundboard, and improve the sound quality of the piano; and adopting this structure, it has greater advantages in the selection of stringer materials, can save solid wood materials, and improve the material utilization rate. The above special forming die can bend multiple layers of veneers into a preset stringer shape, meet mass production, improve production efficiency, reduce the forming difficulty, shorten the forming pressing time, and solve the problems of stringer deformation, poor stability, high quality requirements for raw material veneers, low material utilization rate, and high production cost.

[0004] In order to achieve the above technical features, the purpose of the utility model is realized as follows: a combined piano stringer includes a first middle and high pitch stringer in the middle and high pitch area of the stringer, the end of the first middle and high pitch stringer is connected with a second arc-shaped bending section, and the other end of the second arc-shaped bending section is transitionally connected with a third bass stringer in the bass area of the stringer;

[0005] The two ends of the second arc-shaped bending section are respectively overlapped and bonded with the first middle and high pitch stringer in the middle and high pitch area of the stringer and the third bass stringer in the bass area of the stringer in a staggered manner, so that the whole set of stringer bottom materials can be bonded into a whole.

[0006] In the first section, the treble bridge as a whole adopts a curved structure form. The treble bridge in the first section includes a treble bridge bottom substrate structure at the bottom layer, and a treble bridge top substrate structure is adhesively formed on the top of the treble bridge bottom substrate structure;

[0007] The treble bridge bottom substrate structure is prepared by vertically splicing and adhesively forming single boards;

[0008] The treble bridge top substrate structure is formed and prepared from a whole piece of hardwood material board.

[0009] In the third section, the bass bridge as a whole adopts a curved structure form. The bass bridge in the third section includes a bass bridge bottom substrate structure at the bottom layer, and a bass bridge top substrate structure is adhesively formed on the top of the bass bridge bottom substrate structure;

[0010] Both the bass bridge bottom substrate structure and the bass bridge top substrate structure are respectively formed and prepared from a whole piece of hardwood material board.

[0011] The second section of the arc-shaped bending section is formed and prepared from a whole piece of hardwood material board.

[0012] A forming mold for a treble vertical splicing and forming bridge of a piano, the forming mold is used for forming the treble bridge bottom substrate structure;

[0013] It includes an upper mold. An upper mold fixing structure is arranged at the top of the upper mold. The bottom end surface of the upper mold is processed with an upper arc-shaped curved surface structure, and the upper arc-shaped curved surface structure fits with the outer side surface of the bridge of the first section of the treble bridge;

[0014] It further includes a lower mold. A lower mold fixing structure is arranged at the bottom of the lower mold. The top end surface of the lower mold is processed with a lower arc-shaped curved surface structure, and the lower arc-shaped curved surface structure fits with the inner side surface of the bridge of the first section of the treble bridge.

[0015] The upper mold is formed by vertically splicing and bonding solid wood or plywood and then profiling. A number of first extended screws and nuts are installed through both sides of the upper mold;

[0016] The lower mold is formed by vertically splicing and bonding solid wood or plywood and then profiling. A number of second extended screws and nuts are installed through both sides of the lower mold.

[0017] The upper mold fixing structure and the lower mold fixing structure adopt the same structure. The upper mold fixing structure includes a mold bottom plate, and symmetrically arranged side plates are fixed on the mold bottom plate. The side plates are located on both sides of the upper mold, and screw holes are processed on the side plates. The parts where the screw holes are located are fixedly connected with the upper mold through screws.

[0018] A method for forming the substrate structure of the middle and high pitch stringer of a piano using the forming mold for the vertically assembled middle and high pitch stringer of the piano includes the following steps:

[0019] Step 1, selection of the board:

[0020] Select the veneer for preparing the substrate structure of the middle and high pitch stringer.

[0021] Step 2, processing of the veneer:

[0022] Process the veneer into a set thickness, sand it, and then stack it with glue layers.

[0023] Step 3, glue pressing and forming of the board:

[0024] Press and form the stacked veneer using the forming mold with glue.

[0025] Step 4, cutting of the board:

[0026] After the forming is completed, take out the rough blank and cut it into multiple pieces.

[0027] Step 5, forming of the substrate structure of the middle and high pitch stringer:

[0028] Finally, form the substrate structure of the middle and high pitch stringer into the first section of the middle and high pitch stringer as required.

[0029] The utility model has the following beneficial effects:

[0030] By adopting the structure of bonding multiple veneers, the substrate of the vertically assembled middle and high pitch stringer of the piano is completed. Then, the arc-shaped bending connecting section and the stringer bass substrate are processed with hardwood having the same wood grain and connected into a whole, ensuring the coherence, stability and continuity of the stringer, enhancing the resonance effect of the piano soundboard, and improving the sound quality of the piano. And by adopting this structure, there is a greater advantage in the selection of stringer materials, which can save solid wood materials and improve the material utilization rate. By using the above special forming mold, multiple veneers can be bent into the preset stringer shape, meeting mass production requirements, while improving production efficiency, reducing the forming difficulty, shortening the forming and pressing time, and solving the problems of stringer deformation, poor stability, high quality requirements for the raw material veneer, low material utilization rate and high production cost. Description of the Drawings

[0031] The following further describes the utility model in conjunction with the drawings and embodiments.

[0032] Figure 1 It is the plan view of the combined stringer of the piano of the utility model.

[0033] Figure 2 It is the front view of the first section of the middle and high pitch stringer and the second section of the arc-shaped bending section of the utility model.

[0034] Figure 3 This is the front view of the third - stage bass string bridge and the second - stage arc - bent section of the present utility model.

[0035] Figure 4 For the present utility model Figure 1 View A - A in it.

[0036] Figure 5 For the present utility model Figure 1 View B - B in it.

[0037] Figure 6 For the present utility model Figure 1 View E - E in it.

[0038] Figure 7 For the present utility model Figure 1 View F - F in it.

[0039] Figure 8 This is the front view of the forming die of the present utility model.

[0040] Figure 9 This is the side view of the forming die of the present utility model.

[0041] In the figure: the first - stage middle - high - pitched string bridge 1, the second - stage arc - bent section 2, the third - stage bass string bridge 3, the outer side surface of the string bridge 4, the inner side surface of the string bridge 5, the upper - die fixing structure 6, the upper die 7, the first lengthened screw 8, the upper arc - shaped curved surface structure 9, the lower arc - shaped curved surface structure 10, the lower die 11, the lower die 12, the lower - die fixing structure 13;

[0042] The top - material structure of the middle - high - pitched string bridge 101, the bottom - material structure of the middle - high - pitched string bridge 102;

[0043] The top - material structure of the bass string bridge 301, the bottom - material structure of the bass string bridge 302. Specific embodiments

[0044] The following further describes the embodiments of the present utility model in conjunction with the attached drawings.

[0045] Embodiment 1:

[0046] See Figure 1-7, A combined piano bridge, including the first middle and high pitch bridge 1 in the middle and high pitch area of the bridge. The end of the first middle and high pitch bridge 1 is connected to the second arc-shaped bending section 2, and the other end of the second arc-shaped bending section 2 is transitionally connected to the third bass bridge 3 in the bass area of the bridge; The two ends of the second arc-shaped bending section 2 are respectively overlapped and bonded with the first middle and high pitch bridge 1 in the middle and high pitch area of the bridge and the third bass bridge 3 in the bass area of the bridge in a staggered manner, so that the entire bridge substrate can be bonded into a whole. By adopting the above combined bridge, it can well solve the problems of the existing two-structured bridges, such as large forming difficulty, long forming pressing time, difficult processing, high cost, easy deformation, poor stability, high quality requirements for raw materials, and low production efficiency. It completes the middle and high pitch vertical splicing and forming bridge substrate of the piano through a structure of bonding multiple veneers, and then processes the arc-shaped bending connection section and the bass bridge substrate with hard wood of the same wood grain and connects them into a whole, ensuring the coherence, stability and continuity of the bridge, enhancing the resonance effect of the piano soundboard, and improving the sound quality of the piano. And by adopting this structure, it has greater advantages in the selection of bridge materials, can save solid wood materials, and improve the utilization rate of materials.

[0047] Further, the first middle and high pitch bridge 1 as a whole adopts a curve structure form. The first middle and high pitch bridge 1 includes a middle and high pitch bridge substrate structure 102 at the bottom layer, and a middle and high pitch bridge top material structure 101 is bonded and formed on the top of the middle and high pitch bridge substrate structure 102. By adopting the above first middle and high pitch bridge 1, it can be used to form the middle and high pitch bridge.

[0048] Further, the middle and high pitch bridge substrate structure 102 is prepared by vertically splicing and bonding veneers; By adopting the above structure, the coherence, stability and continuity of the bridge are ensured, the resonance effect of the piano soundboard is enhanced, and the sound quality of the piano is improved.

[0049] Further, the middle and high pitch bridge top material structure 101 is formed and prepared by using a whole piece of hard wood material board. The coherence of the bridge is ensured by the above middle and high pitch bridge top material structure 101.

[0050] Further, the third bass bridge 3 as a whole adopts a curve structure form. The third bass bridge 3 includes a bass bridge substrate structure 302 at the bottom layer, and a bass bridge top material structure 301 is bonded and formed on the top of the bass bridge substrate structure 302. By the above third bass bridge 3, the bass bridge can be formed.

[0051] Further, both the bass bridge substrate structure 302 and the bass bridge top material structure 301 are formed and prepared by using a whole piece of hard wood material board. The overall structural coherence and stability of the bass bridge are ensured by the above boards.

[0052] Further, the second arc-shaped bending section 2 is formed by using a whole piece of hardwood material board.

[0053] Example 2:

[0054] See Figure 8-9 , a forming die for a medium and high pitch vertical splicing formed stringer of a piano, the forming die is used to form the medium and high pitch stringer bottom material structure 102; including an upper die 7, an upper die fixing structure 6 is arranged at the top of the upper die 7, and an upper arc-shaped curved surface structure 9 is machined on the bottom end surface of the upper die 7, and the upper arc-shaped curved surface structure 9 fits with the stringer outer side surface 4 of the first section of medium and high pitch stringer 1; further includes a lower die 11, a lower die fixing structure 13 is arranged at the bottom of the lower die 11, and a lower arc-shaped curved surface structure 10 is machined on the top end surface of the lower die 11, and the lower arc-shaped curved surface structure 10 fits with the stringer inner side surface 5 of the first section of medium and high pitch stringer 1. Through the above-mentioned forming die, multiple layers of veneers can be bent into a preset stringer shape, which meets the requirements of mass production, improves production efficiency, reduces the difficulty of forming, shortens the forming pressing time, and solves the disadvantages of stringer deformation, poor stability, high quality requirements for raw material veneers, low material utilization rate, and high production cost.

[0055] Further, the upper die 7 is formed by vertically splicing and bonding solid wood or plywood and then profiling, and a number of first lengthening screws 8 and nuts are installed through both sides of the upper die 7; the lower die 12 is formed by vertically splicing and bonding solid wood or plywood and then profiling, and a number of second lengthening screws 12 and nuts are installed through both sides of the lower die 12. The strength and stability of the die are increased, so that the upper and lower dies are not deformed and do not come unglued under stress.

[0056] Further, the upper die fixing structure 6 and the lower die fixing structure 13 adopt the same structure. The upper die fixing structure 6 includes a die bottom plate 601, symmetrically arranged side plates 602 are fixed on the die bottom plate 601, the side plates 602 are located on both sides of the upper die 7, and screw holes 603 are machined on the side plates 602, and the parts where the screw holes 603 are located are fixedly connected to the upper die 7 through screws. Through the above-mentioned upper die fixing structure 6 and lower die fixing structure 13, it is convenient to disassemble and replace on a pressure device.

[0057] Example 3:

[0058] A method for forming the medium and high pitch stringer bottom material structure 102 by using the forming die for a medium and high pitch vertical splicing formed stringer of a piano includes the following steps:

[0059] Step 1, selection of plates:

[0060] Select the veneers used for preparing the medium and high pitch stringer bottom material structure 102.

[0061] Step 2, processing of veneers:

[0062] The single board is processed into a set thickness, sanded, and then coated with glue and stacked.

[0063] Step 3, Glue pressing and forming of the board:

[0064] The stacked single boards are glue pressed and formed using a forming mold.

[0065] Step 4, Cutting of the board:

[0066] After the forming is completed, the rough blank is taken out and cut into multiple pieces.

[0067] Step 5, Forming of the middle and high pitch bridge substrate structure 102:

[0068] Finally, the middle and high pitch bridge substrate structure 102 is processed into the middle and high pitch bridge 1 as required.

Claims

1. A combined piano stringer, characterized in that, It includes the first mid - high pitched string bridge (1) in the mid - high pitched area of the string bridge. The end of the first mid - high pitched string bridge (1) is connected to the second arc - shaped bending section (2), and the other end of the second arc - shaped bending section (2) is transitionally connected to the third bass string bridge (3) in the bass area of the string bridge; Two ends of the second arc - shaped bending section (2) are respectively adhesively bonded in a staggered and overlapping manner to the first mid - high pitched string bridge (1) in the mid - high pitched area of the string bridge and the third bass string bridge (3) in the bass area of the string bridge. In this way, the whole string bridge substrate can be adhesively bonded into a whole.

2. The combined piano bridge according to claim 1, wherein: The first mid - high pitched string bridge (1) adopts a curve structure as a whole. The first mid - high pitched string bridge (1) includes a mid - high pitched string bridge substrate structure (102) located at the bottom layer, and a mid - high pitched string bridge top - material structure (101) is adhesively formed on the top of the mid - high pitched string bridge substrate structure (102); The mid - high pitched string bridge substrate structure (102) is prepared by vertically splicing and adhesively bonding single - board; The mid - high pitched string bridge top - material structure (101) is prepared by forming a whole hard - wood material board; 3. The combined piano bridge according to claim 2, wherein: The third bass string bridge (3) adopts a curve structure as a whole. The third bass string bridge (3) includes a bass string bridge substrate structure (302) located at the bottom layer, and a bass string bridge top - material structure (301) is adhesively formed on the top of the bass string bridge substrate structure (302); Both the bass string bridge substrate structure (302) and the bass string bridge top - material structure (301) are prepared by forming a whole hard - wood material board; 4. The combined piano bridge according to claim 3, characterized in that: The second arc - shaped bending section (2) is prepared by forming a whole hard - wood material board; 5. A forming die for the vertically assembled and formed stringer of the middle and high notes of a piano, characterized in that, The forming die is used to form the mid - high pitched string bridge substrate structure (102) according to any one of claims 2 - 4; It includes an upper die (7). On the top of the upper die (7), there is an upper die fixing structure (6). The bottom end face of the upper die (7) is machined with an upper arc - shaped curved surface structure (9), and the upper arc - shaped curved surface structure (9) fits with the outer side surface (4) of the string bridge of the first mid - high pitched string bridge (1); It also includes a lower die (11). At the bottom of the lower die (11), there is a lower die fixing structure (13). The top end face of the lower die (11) is machined with a lower arc - shaped curved surface structure (10), and the lower arc - shaped curved surface structure (10) fits with the inner side surface (5) of the string bridge of the first mid - high pitched string bridge (1).

6. The forming die for the vertically assembled and formed stringer in a piano for middle and high notes according to claim 5, characterized in that, The upper die (7) is processed by vertical splicing and adhesive bonding of solid wood or plywood and then profiling. A number of first extended screws (8) and nuts are installed through both sides of the upper die (7); The lower die (11) is processed by vertical splicing and adhesive bonding of solid wood or plywood and then profiling. A number of second extended screws (12) and nuts are installed through both sides of the lower die (11).

7. The forming die for the vertically assembled and formed stringer in a piano according to claim 5, characterized in that, The upper die fixing structure (6) and the lower die fixing structure (13) adopt the same structure. The upper die fixing structure (6) includes a die bottom plate (601). On the die bottom plate (601), symmetrically arranged side plates (602) are fixed. The side plates (602) are located on both sides of the upper die (7). Screw holes (603) are machined on the side plates (602), and the parts where the screw holes (603) are located are fixedly connected to the upper die (7) through screws.

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