CN210290405U - Installation device for piano soundboard rib wood - Google Patents

Abstract

The utility model discloses an installation device of piano soundboard stall bar relates to the piano and makes technical field, and its technical scheme main points are: including workstation, setting frame, the die pressing mechanism of setting in the frame on the workstation, be equipped with positioning frame on the workstation, it has the recess of a plurality of confession ribbing tip joints to distribute on positioning frame's the inside wall, positioning frame is close to the lateral wall and is equipped with the bolt of being connected with the workstation on the surface. On placing the workstation with the soundboard of preliminary bonding rib stuff, the rib stuff sets up, overlaps positioning frame again on the soundboard, and the tip of rib stuff is in corresponding recess, passes through the bolt fastening with positioning frame back on the workstation, starts the die pressing mechanism with rib stuff and soundboard pressfitting, because the both ends of rib stuff all receive the restriction of corresponding recess, the unable skew that takes place of rib stuff makes the mounted position of rib stuff on the soundboard accurate.

Description

Installation device for piano soundboard rib wood

Technical Field

The utility model relates to a technical field is made to the piano, in particular to installation device of piano soundboard stall bar.

Background

The piano soundboard consists of a sound board, a rib wood, a bridge, a soundboard frame and other parts. The rib wood is an indispensable component of the sound board, the rib wood bears larger tensile stress in the sound board, two ends of the rib wood are designed into inclined rhombuses, and the bonding surface of the rib wood and the resonance board is designed into a slightly convex arc. The traditional soundboard and rib wood gluing and shaping method is that a soundboard and rib wood strips which are processed in advance are glued and bonded, and then are clamped and pressed by a clamp, a fixture and the like, so that the soundboard and the rib wood strips are shaped.

At present, chinese patent with publication number CN104240681B discloses a rib wood gluing and shaping device for a piano soundboard, which comprises a frame, a fixed die device fixed at the lower end of the frame, a movable die device mounted on the frame, and a lifting device for driving the movable die device to vertically lift, wherein the fixed die device comprises a die base, and an arc-shaped module is mounted at the upper end of the die base; the movable mold device comprises a lower pressing plate, a plurality of T-shaped grooves extending along the longitudinal direction are uniformly formed in the lower end face of the lower pressing plate, I-shaped positioning strips are inserted in the T-shaped grooves in a sleeved mode, and a cylinder group is fixed to the lower end face of each positioning strip.

The soundboard that will bond with the rib preliminary in the aforesaid patent is placed on the arc module, and cylinder group pressfitting rib wood soundboard is restarted, but because the effect of not fixing a position to the rib wood on the arc module, when using cylinder group pressfitting rib wood, the rib wood that has not bonded firmly with the soundboard is very easy pressurized and appears sliding, leads to connecting the mistake, influences the soundboard quality after the shaping.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an installation device of piano soundboard stall bar, it is fixed the rib through setting up positioning frame to reach the purpose that improves the soundboard shaping quality.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a piano soundboard stall bar's installation device, includes the workstation, sets up frame, the die pressing mechanism of setting in the frame on the workstation, be equipped with positioning frame on the workstation, it has the recess of a plurality of confession stall bar tip joints to distribute on positioning frame's the inside wall, positioning frame is close to the lateral wall be equipped with the bolt of being connected with the workstation on the surface.

Through above-mentioned technical scheme, on earlier placing the workstation with the soundboard of preliminary bonding rib stuff, the rib stuff sets up, overlaps positioning frame again on the soundboard, the tip of rib stuff is in corresponding recess, passes through the bolt fastening with positioning frame back on the workstation, starts the die pressing mechanism with rib stuff and soundboard pressfitting, because the both ends of rib stuff all receive the restriction of corresponding recess, the unable skew that takes place of rib stuff makes the mounted position of rib stuff on the soundboard accurate.

Preferably, the lower parts of the four side edges of the positioning frame are respectively provided with a backing plate adaptive to the length of the corresponding side edge, the backing plates are used for supporting the corresponding side edges of the positioning frame, and the thickness of each backing plate is the same as that of the sound plate.

Through above-mentioned technical scheme, positioning frame supports by backing plate and soundboard simultaneously, and the bolt that is used for fixing on the positioning frame is when screwing up, and the lateral wall of the corresponding side of positioning frame is fully supported so that can not appear sinking, and the inside wall of the corresponding side of positioning frame just can not lift to the reduction is to the fixed influence of stall bar.

Preferably, four backing plates are arranged in parallel two by two, and an accommodating space for placing the sound boards is formed between the four backing plates.

Through above-mentioned technical scheme, on the workstation was installed earlier to four backing plates, place the soundboard between four backing plates again, conveniently fix a position the soundboard, make the floor on the soundboard can with the better correspondence of compression moulding mechanism.

Preferably, still be equipped with a plurality of sand grips with the stall bar one-to-one on the workstation, the length direction of sand grip is the same with the length direction of recess, the both ends of sand grip are in the below of the recess that two notches on the positioning frame are relative respectively.

Through above-mentioned technical scheme, the sand grip cooperates with the die pressing mechanism, and the reinforcing is in the pressfitting power that receives between the stall bar directly over the sand grip and the soundboard, makes the connection of stall bar and soundboard inseparabler.

Preferably, the workbench is provided with a caulking groove, a bottom plate is arranged in the caulking groove, and all the raised lines are fixed on the bottom plate.

Through above-mentioned technical scheme, appear damaging when the sand grip after long-time processing, can carry out holistic change to whole bottom plate, make whole installation device can continue to use. And because the bottom plate adopts the mode of gomphosis to install on the workstation, the change of bottom plate can not cause the influence to the structure of workstation.

Preferably, the compression molding mechanism comprises a plurality of pressing strips and a plurality of cylinder groups in one-to-one correspondence with the pressing strips, the pressing strips are in one-to-one correspondence with the ribbed wood strips on the soundboard respectively, each cylinder group comprises a plurality of cylinders, the cylinders are fixed on the frame, and output shafts of the cylinders are vertically downward and connected to the corresponding pressing strips.

Through the technical scheme, the cylinders in the same cylinder group are uniformly distributed along the length direction of the corresponding pressing strips, so that the pressure of the pressing strips on the ribbed wood bars can be dispersed to multiple points, and the full fit between the ribbed wood bars and the sound board is ensured as far as possible.

Preferably, an external thread is arranged at one end, far away from the cylinder, of the output shaft of the cylinder, a through hole for the output shaft of the cylinder to pass through is formed in the pressing strip, two nuts are connected to the output shaft of the cylinder in a threaded mode and are respectively located at two ends of the through hole, and the nut located at one side, far away from the cylinder, is embedded into the pressing strip.

Through the technical scheme, the nut close to the cylinder rotates towards one side of the cylinder, so that the pressing strip can move on the output shaft of the cylinder, the nut far away from the cylinder is separated from the pressing strip, the nut far away from the cylinder is unscrewed, the pressing strip can be taken down from the output shaft of the cylinder, and the pressing strip is convenient to replace.

Preferably, filling pads are arranged at two ends of the pressing strip, and the two filling pads are located on one side, facing the workbench, of the pressing strip.

Through above-mentioned technical scheme, the packing pad is used for filling the curved both ends of rib stuff, makes the pressure that whole rib stuff received on length direction more balanced, the compactness between stiffening rib stuff and the soundboard.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

1. through the arrangement of the positioning frame, the ribbed battens are positioned firstly, and then are pressed by the pressing die mechanism, so that the installation positions of the ribbed battens are not easy to deviate, and the quality of the formed soundboard is improved;

2. through setting up the backing plate, can fix a position the soundboard, can cooperate the soundboard again to make positioning frame be in the horizontality, reinforcing positioning frame is to the location effect of rib stuff.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is an exploded view of a connection structure between a positioning frame and a table in the embodiment;

FIG. 3 is a schematic view of a connection structure between the cylinder and the compression bar in the embodiment.

Reference numerals: 1. a work table; 11. caulking grooves; 2. a frame; 3. a base plate; 4. a convex strip; 5. a positioning frame; 51. a groove; 6. a base plate; 7. a die pressing mechanism; 71. layering; 711. a through hole; 712. filling the pad; 72. a cylinder; 721. and a nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a piano soundboard stall bar's installation device, as shown in figure 1, including workstation 1, the frame 2 of setting on workstation 1, the compression moulding mechanism 7 of setting on frame 2 and the location frame 5 that is used for fixed floor, combine figure 2, workstation 1 is equipped with caulking groove 11 on the surface, it has bottom plate 3 to fill in caulking groove 11, the upper surface of bottom plate 3 and workstation 1's surface parallel and level, be equipped with a plurality of sand grip 4 with the stall bar one-to-one on the soundboard respectively on the bottom plate 3, location frame 5 locates on bottom plate 3 and is supported by all sand grip 4 together.

Referring to fig. 1 and 2, four backing plates 6 are arranged above the convex strips 4, the four backing plates 6 are arranged in parallel in pairs and form an accommodating space for placing the sound boards, the thickness of each backing plate 6 is the same as that of each sound board, and the backing plates 6 are fixed on the convex strips 4 on the corresponding sides through bolts. Positioning frame 5 comprises four curb plates, four curb plates are placed respectively at four backing plates 6, bolt fastening is passed through on corresponding backing plate 6 to one side that accommodation space was kept away from to the curb plate, one side that the curb plate is close to accommodation space is in the top of soundboard, and equally divide cloth on the inside wall of four curb plates has the recess 51 of a plurality of confession ribbed wood bar tip joints, all two liang of correspondences of recess 51 on all curb plates divide into a set ofly, two grooves 51 notches of same set of are relative, and a plurality of ribbed wood bars one-to-one on multiunit recess 51 group and the soundboard, the both ends of sand grip 4 are in the below of the recess 51 with two notches that corresponding to corresponding ribbed wood bar respectively.

Referring to fig. 1 and 2, the die pressing mechanism 7 includes a plurality of pressing bars 71 and a plurality of cylinder groups corresponding to the pressing bars 71 one by one, the plurality of pressing bars 71 correspond to the rib strips on the soundboard one by one, the length of the pressing bars 71 is also adapted to the length of the corresponding rib strips, filling pads 712 are provided on both ends of the pressing bars 71, and both filling pads 712 are located on the side of the pressing bars 71 facing the workbench 1. The cylinder group is composed of a plurality of cylinders 72, the number of the cylinders 72 in the cylinder group is related to the length of the opposite pressing strips 71, the number of the cylinders 72 arranged on the pressing strips 71 with longer length is relatively larger, the number of the cylinders 72 arranged on the pressing strips 71 with shorter length is relatively smaller, and the cylinders 72 in the same group are uniformly distributed along the length direction of the corresponding pressing strips 71. The air cylinder 72 is fixed on the frame 2, the output shafts of the air cylinders 72 are vertically downward and connected to the corresponding pressing strips 71, external threads are arranged at one ends, far away from the air cylinders 72, of the output shafts of the air cylinders 72, through holes 711 for the output shafts of the air cylinders 72 to penetrate through are formed in the pressing strips 71, two nuts 721 are connected to the output shafts of the air cylinders 72 in a threaded mode, the two nuts 721 are located at two ends of the through holes 711 respectively, and the nuts 721 located at one sides, far away from the air cylinders 72, are embedded.

In actual operation process, earlier place bottom plate 3 with sand grip 4 during the caulking groove 11 of workstation 1 upwards, pass through bolt fastening to bottom plate 3 with four backing plates 6 again, four backing plates 6 enclose into the frame shape, later place the soundboard of the good ribbed timber strip of preliminary adhesion between four backing plates 6. The four side plates are sequentially fixed to the corresponding backing plates 6 through bolts to form the positioning frames 5, the side plates are supported by the corresponding backing plates 6 together with the soundboard, and two ends of the ribbed wood bars on the soundboard are respectively placed in the corresponding grooves 51. Finally, synchronously starting the air cylinders 72 to press the pressing strips 71 onto the corresponding ribbed wood bars, and waiting for glue between the ribbed wood bars and the soundboard to solidify.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims (8)

1. The utility model provides a piano soundboard stall bar's installation device, includes workstation (1), frame (2) of setting on workstation (1), die pressing mechanism (7) of setting on frame (2), characterized by: be equipped with positioning frame (5) on workstation (1), it has recess (51) of a plurality of confession ribbing tip joints to distribute on the inside wall of positioning frame (5), positioning frame (5) are close to the bolt of being connected with workstation (1) on the surface of lateral wall.

2. A piano soundboard ribbing apparatus as defined in claim 1, wherein: the lower parts of the four side edges of the positioning frame (5) are respectively provided with a backing plate (6) matched with the corresponding side edge in length, the backing plates (6) are used for supporting the corresponding side edges of the positioning frame (5), and the thickness of the backing plates (6) is the same as that of the sound board.

3. A piano soundboard ribbing apparatus as defined in claim 2, wherein: four backing plates (6) are arranged in parallel two by two, and an accommodating space for placing the soundboard is formed between the four backing plates (6).

4. A piano soundboard ribbing apparatus as defined in claim 1, wherein: still be equipped with a plurality of sand grip (4) with the rib wood strip one-to-one on workstation (1), the length direction of sand grip (4) is the same with the length direction of recess (51), the both ends of sand grip (4) are in the below of two relative recess of notch (51) on positioning frame (5) respectively.

5. A piano soundboard ribbing apparatus as claimed in claim 4, wherein: be equipped with caulking groove (11) on workstation (1), be equipped with bottom plate (3) in caulking groove (11), all sand grip (4) are all fixed on bottom plate (3).

6. A piano soundboard ribbing apparatus as defined in claim 1, wherein: the compression molding mechanism (7) comprises a plurality of compression strips (71) and a plurality of cylinder groups in one-to-one correspondence with the compression strips (71), the compression strips (71) are in one-to-one correspondence with the ribbed wood strips on the soundboard respectively, each cylinder group comprises a plurality of cylinders (72), the cylinders (72) are fixed on the rack (2), and output shafts of the cylinders (72) are vertically downward and connected to the corresponding compression strips (71).

7. A piano soundboard ribbing apparatus as claimed in claim 6, wherein: an external thread is arranged at one end, far away from the air cylinder (72), of an output shaft of the air cylinder (72), a through hole (711) for the output shaft of the air cylinder (72) to penetrate through is formed in the pressing strip (71), two nuts (721) are connected to the output shaft of the air cylinder (72) in a threaded mode, the two nuts (721) are located at two ends of the through hole (711) respectively, and the nut (721) located at one side, far away from the air cylinder (72), is embedded into the pressing strip (71).

8. A piano soundboard ribbing apparatus as claimed in claim 6, wherein: filling pads (712) are arranged at two ends of the pressing strip (71), and the two filling pads (712) are located on one side, facing the workbench (1), of the pressing strip (71).

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