CN116749040B

CN116749040B - Automatic guitar frame grinding device and method

Info

Publication number: CN116749040B
Application number: CN202311021511.7A
Authority: CN
Inventors: 颜彬
Original assignee: Wuhan Jiahua Musical Instrument Co ltd
Current assignee: Wuhan Jiahua Musical Instrument Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2023-10-17
Anticipated expiration: 2043-08-15
Also published as: CN116749040A

Abstract

The utility model relates to the technical field of automatic guitar polishing, in particular to an automatic guitar frame grinding device and a method thereof, wherein the automatic guitar frame grinding device comprises a base for placing a body and a polishing mechanism arranged above the base for polishing a side plate of the body; according to the utility model, the body is fixed, the polishing rollers adaptively move along the edge of the body to perform full-automatic polishing, so that the polishing efficiency is accelerated, and the two parts with different sizes of the body are respectively polished in a reciprocating manner by adopting the double polishing rollers, so that only one polishing roller is used for polishing, and the deformation degree of the elastic telescopic bracket is overlarge in the polishing process.

Description

Automatic guitar frame grinding device and method

Technical Field

The utility model relates to the technical field of automatic guitar polishing, in particular to an automatic guitar frame polishing device and method.

Background

A guitar is a common musical instrument, wherein a guitar body is a main component part of the guitar and consists of a back plate, a panel and side plates, wherein the panel is provided with a circular sound hole; the frame of the guitar body needs to be polished after the guitar body is manufactured, so that the feel of the guitar body is better, and the subsequent painting uniformity is facilitated.

The Chinese patent with publication number of CN209520727 discloses a guitar surface polisher, which comprises a working platform, a first polishing mechanism and a second polishing mechanism, wherein a first rotating motor is used for driving a first polishing piece to rotate so as to polish a guitar side plate, a first driving device is used for driving a fixing plate to move so as to drive the first polishing piece to move, two ends of a spring are respectively connected with a connecting piece and the fixing plate, and when the connecting piece moves along with the fixing plate, a certain angle exists between the connecting piece and the fixing piece so as to enable the first polishing piece to prop against the guitar side plate to polish the guitar side plate; the second rotating motor drives the second polishing piece to rotate and is positioned above the guitar, and the panel or the bottom plate of the guitar can be polished.

Above-mentioned patent application is when polishing the body, adopt single first grinding piece rotatory in-process inefficiency of polishing, and single first grinding piece rotatory mode of polishing can not be so that the body atress even, influence the effect of polishing, and can only reciprocate the polishing to body one side frame in the above-mentioned patent application, still need switch the body position of polishing if polishing, unable full-automatic polishing, and above-mentioned patent application is when polishing the body, more can't accomplish the self-adaptation and keep the tensioning dynamics to come to laminate the body frame and often can lead to the body to polish the effect to have the deviation.

Disclosure of Invention

The utility model provides an automatic guitar frame grinding device and method, which are used for solving the problems of low grinding efficiency and deviation of grinding effect in the related art when a body is ground.

The utility model provides an automatic guitar frame grinding device which comprises a base for placing a body and a grinding mechanism arranged above the base and used for grinding side plates of the body, wherein the base is of a circular hollow structure, a preliminary positioning group is arranged on the base, an air cylinder is fixedly arranged on the upper surface of the base near the edge, the top of the air cylinder is provided with the grinding mechanism, the grinding mechanism comprises a transverse plate fixedly connected to the top of the air cylinder, two grinding components are rotatably arranged on the lower surface of the transverse plate, a fixing mechanism is arranged at the bottom of the transverse plate, the fixing mechanism comprises a circular shaft fixed on the lower surface of the transverse plate, and the circular shaft is positioned between the two grinding components.

The utility model discloses a circular shaft, including the surface middle part fixed mounting of circular shaft, the diameter of pushing the platform from bottom to top increases gradually, and the outside of circular shaft is located the below slip cap of pushing the platform and is equipped with the collar, slide along its radial direction on the collar and be provided with a plurality of circumference distribution's internal stay subassembly, the surface mounting of circular shaft is provided with a plurality of circumference distribution's limiting plate, and the top of limiting plate contacts with the bottom of collar.

A plurality of circumferentially distributed rectangular through grooves are formed in the top of the mounting ring, and the inner support assembly is located in the rectangular through grooves and moves along the radial direction of the mounting ring.

In one possible implementation mode, the upper surface of diaphragm is kept away from the one end of cylinder and is provided with bi-directional motor, and the subassembly of polishing is including rotating a pivot that sets up at diaphragm lower surface, and one of them pivot and bi-directional motor's output fixed connection is equipped with the band pulley in the pivot, and two band pulleys pass through No. two conveyer belt transmission and connect, the bottom fixedly connected with elastic expansion bracket of pivot, the tip rotation of elastic expansion bracket is provided with No. two pivots, and the bottom fixed mounting of No. two pivots has the roller of polishing.

In one possible implementation mode, the second rotating shaft penetrates through the end part of the elastic telescopic support, the top end of the second rotating shaft is in transmission connection with the first rotating shaft through a first conveying belt, the top of the elastic telescopic support is vertically provided with a vertical rod, the vertical rod is located inside the first conveying belt, a through hole is formed in one side, facing the first conveying belt, of the vertical rod, a -shaped seat is elastically connected in the through hole in a sliding mode, a tensioning wheel is installed at the opening of the -shaped seat in a rotating mode, and the tensioning wheel is in contact with the first conveying belt.

In one possible implementation mode, the polishing roller comprises a mounting frame fixed at the bottom end of the second rotating shaft, wherein the mounting frame is composed of a circular plate and a plurality of arc-shaped strips which are integrally formed on the lower surface of the circular plate and are circumferentially distributed, and polishing sheets are embedded between two adjacent arc-shaped strips.

In one possible implementation mode, the preliminary positioning group comprises sliding grooves, waist-shaped rings, a cylinder seat and semi-spheres, two groups of symmetrical sliding grooves are formed in the upper surface of the base, each group of sliding grooves comprises three sliding grooves which are parallel to each other and are not flush with each other in end parts, the waist-shaped rings are arranged in the sliding grooves by means of bottom end fixing, the waist-shaped rings are slidably arranged on the upper surface of the sliding grooves, ropes penetrating through the waist-shaped rings are connected to the bottoms of all the cylinder seats, the other ends of the ropes are wound on winding mechanisms arranged in the base, and the semi-spheres are elastically and slidably connected to the tops of the cylinder seats.

In one possible implementation, the cylinder seat is made of metal, the waist-shaped ring is an electromagnet, and the magnetism of the waist-shaped ring is gradually enhanced from one end close to the body to one end far from the body.

In one possible implementation mode, the internal stay subassembly includes two rectangle strips of fixing in the inside bottom of rectangle logical groove, and two rectangle strips distribute at the both sides inner wall of rectangle logical groove, and have the interval between two rectangle strips, and the top of two rectangle strips slides jointly and is provided with the movable plate, the movable plate passes through compression spring and one side inner wall fixed connection of rectangle logical groove, the bottom of rectangle strip still is connected with L shape connecting rod, and the interval that the vertical section of L shape connecting rod passed between two rectangle strips leads to the below, and has the clearance between the horizontal segment of L shape connecting rod and the bottom of rectangle strip, the terminal fixedly connected with arc internal stay board of horizontal segment of L shape connecting rod, the top of movable plate is close to one side corner rotation of pushing table and is inlayed and is equipped with the roller.

In addition, the utility model also provides a guitar automatic frame grinding method which is completed by adopting a guitar automatic frame grinding device in a matching way, and specifically comprises the following steps: s1, preliminary fixing of a body: the body is placed on the upper surface of the base manually, and the preliminary positioning group is used for preliminary positioning of the body.

S2, locking and fixing after fine tuning of the body: then the cylinder work drives the diaphragm to descend, the polishing assembly and the fixing mechanism descend synchronously at the moment, the round shaft descends to enable the bottom end of the round shaft and the arc-shaped inner supporting plate to be inserted into the sound hole first, the round shaft continuously descends until the lower surface of the mounting ring is in contact with the upper surface of the body, the round shaft continuously descends at the moment, the mounting ring is limited and does not descend any more, the pushing table gradually pushes the moving plate to move in the descending process along with the round shaft, the moving plate drives the arc-shaped inner supporting plate to expand synchronously, the compression spring is compressed gradually to deform at the moment, fine adjustment and calibration are carried out on the position of the body through the arc-shaped inner supporting plate which moves synchronously until the arc-shaped inner supporting plate supports and fixes the body, and then the primary positioning group plays a role of multi-point limiting on the edge of the body.

S3, polishing the frame of the body: after the fixing mechanism completely fixes the body, the cylinder stops contracting, and the two polishing assemblies are utilized to polish the frame of the body in a reciprocating mode.

The above technical solutions in the embodiments of the present utility model have at least one of the following technical effects: 1. the utility model adopts the preliminary positioning group to carry out preliminary positioning on the body, prepares for the next step of the fixing mechanism to find the sound hole on the body, and is convenient for the subsequent fine tuning and locking fixation of the body; the fixing mechanism and the polishing mechanism are driven to descend through the air cylinder, so that the polishing mechanism reaches a polishing position and the fixing mechanism performs fine adjustment and locking on the body synchronously, and the preparation time before polishing the body is saved.

2. According to the utility model, the body is fixed, the polishing rollers adaptively move along the edge of the body to perform full-automatic polishing, so that the polishing efficiency is accelerated, and the double polishing rollers are adopted to respectively perform reciprocating polishing on two parts with different sizes of the body, so that only one polishing roller is adopted to polish, the deformation degree of the elastic telescopic bracket in the polishing process is overlarge, and the polishing efficiency is higher.

3. The movement and rotation power of the polishing roller is derived from a first rotating shaft, namely, one driving force is adopted to realize the movement and rotation of the polishing roller in the two polishing assemblies.

Drawings

Fig. 1 is a schematic perspective view of an automatic guitar frame grinding device and a guitar body according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of an automatic guitar frame grinding device according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a polishing mechanism and a fixing mechanism of an automatic guitar frame polishing device according to an embodiment of the present utility model.

Fig. 4 is an enlarged schematic view of the area a in fig. 3.

Fig. 5 is a schematic perspective view of a fixing mechanism of an automatic guitar frame grinding device according to an embodiment of the present utility model.

Fig. 6 is one of the partial cutaway views of the fixing mechanism of the automatic guitar framing device provided by the embodiment of the utility model.

Fig. 7 is an enlarged schematic view of region B in fig. 6.

Fig. 8 is a second partial sectional view of a fixing mechanism of an automatic guitar frame grinding device according to an embodiment of the present utility model.

Fig. 9 is a schematic structural view of a polishing subject body of the present utility model.

Fig. 10 is a schematic top view of a guitar automatic frame grinding device according to an embodiment of the present utility model, wherein a cross plate is omitted and the guitar automatic frame grinding device and a body are assembled.

In the figure: 1. a base; 11. a chute; 12. a waist-shaped ring; 13. a cylinder seat; 14. a semicircle sphere; 2. a cylinder; 3. a polishing mechanism; 31. a cross plate; 32. a bi-directional motor; 33. a polishing assembly; 331. a first rotating shaft; 332. a belt wheel; 333. an elastic telescopic bracket; 334. a second rotating shaft; 335. a first conveyor belt; 336. a grinding roller; 3361. a mounting frame; 3362. polishing the sheet; 337. a vertical rod; 3371. a through hole; 338. shaped seat; 339. a tensioning wheel; 34. a second conveyor belt; 4. a fixing mechanism; 41. a circular shaft; 42. a mounting ring; 421. rectangular through grooves; 43. a limiting plate; 44. an inner support assembly; 441. a rectangular bar; 442. a moving plate; 443. an L-shaped connecting rod; 444. an arc-shaped inner supporting plate; 445. a compression spring; 446. a roller; 45. a pushing table; 5. a body; 51. and a sound hole.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described below and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

Please refer to fig. 1, fig. 2 and fig. 9, an automatic guitar grinding frame device, including the base 1 that is used for placing the body 5 and set up the grinding machanism 3 that is used for polishing to the frame of body 5 in base 1 top, base 1 is circular hollow structure, is provided with preliminary location group on the base 1, and preliminary location group includes spout 11, waist type ring 12, drum seat 13 and semicircle ball 14, two sets of symmetrical spout 11 have been seted up to the upper surface of base 1, and every spout 11 of group includes three spout 11 that are parallel to each other and tip is not parallel to each other, and the inside of spout 11 is provided with waist type ring 12 near the bottom mounting, and the inside of spout 11 is located waist type ring 12's upper surface slip and is provided with drum seat 13, and all drum seat 13 bottoms all are connected with the rope that runs through waist type ring 12, and the other end of rope all winds on the winding machanism that sets up in base 1 inside (rope and winding machanism are prior art, not shown in the figure), the top elasticity sliding connection of drum seat 13 has semicircle ball 14.

The cylindrical seat 13 is made of metal, the waist-shaped ring 12 is an electromagnet, the magnetism of the waist-shaped ring 12 is gradually enhanced from one end close to the body 5 to one end far away from the body 5, the cylindrical seats 13 in the two groups of sliding grooves 11 are conveniently placed between all the cylindrical seats 13 due to the fact that the cylindrical seats 13 are mutually far away by the strong magnetic force end of the waist-shaped ring 12 under the condition that the cylindrical seats 13 are not pulled by ropes, and when the winding mechanism winding ropes pull all the cylindrical seats 13 to synchronously move, the cylindrical seats 13 gradually approach the body 5, and meanwhile the cylindrical seats 13 are always kept close to the upper surfaces of the waist-shaped ring 12.

Referring to fig. 1 and 3, an air cylinder 2 is fixedly mounted on the upper surface of the base 1 near the edge, a polishing mechanism 3 is disposed on the top of the air cylinder 2, the polishing mechanism 3 comprises a transverse plate 31 fixedly connected to the top of the air cylinder 2, a bi-directional motor 32 is disposed at one end of the upper surface of the transverse plate 31 far away from the air cylinder 2, two polishing assemblies 33 are rotatably disposed on the lower surface of the transverse plate 31, the polishing assemblies 33 comprise a first rotating shaft 331 rotatably disposed on the lower surface of the transverse plate 31, one of the first rotating shaft 331 is fixedly connected with the output end of the bi-directional motor 32, a belt wheel 332 is fixedly sleeved on the first rotating shaft 331, the two belt wheels 332 are in transmission connection through a second conveying belt 34, the bottom fixedly connected with elastic telescopic bracket 333 of pivot 331, the tip rotation of elastic telescopic bracket 333 is provided with No. two pivots 334, no. two pivots 334 run through the tip of elastic telescopic bracket 333, no. two pivots 334's bottom fixed mounting has the roller 336 that polishes, no. two pivots 334's top is connected with pivot 331 transmission through a conveyer belt 335, wherein, no. two pivot 334's diameter is less than the diameter of pivot 331, the elastic telescopic bracket 333 extension direction in two polishing assemblies 33 is opposite, and two elastic telescopic bracket 333's initial length is different, initially, two rollers 336 are located No. two conveyer belt 34's both sides.

With continued reference to fig. 3, the polishing roller 336 includes a mounting frame 3361 fixed at the bottom end of the second rotating shaft 334, the mounting frame 3361 is composed of a circular plate and a plurality of arc strips integrally formed on the lower surface of the circular plate and distributed circumferentially, polishing sheets 3362 are embedded between two adjacent arc strips, the polishing sheets 3362 are detachably arranged to facilitate replacement of the polishing sheets 3362 used for a long time, and polishing sheets 3362 with different polishing precision can be replaced.

Referring to fig. 3 and 4, the top of the elastic telescopic bracket 333 is vertically provided with a vertical rod 337, the vertical rod 337 is located inside the first conveyor 335, a through hole 3371 is formed in one side of the vertical rod 337 facing the first conveyor 335, a -shaped seat 338 is elastically and slidably connected in the through hole 3371, a tensioning wheel 339 is rotatably mounted at an opening of the -shaped seat 338, and the tensioning wheel 339 contacts with the first conveyor 335.

When the polishing roller 336 does not work, the elastic telescopic bracket 333 is in a contracted state, and at this time, because the distance between the second rotating shaft 334 and the first rotating shaft 331 is reduced, the extrusion force of the first conveyor belt 335 to the tensioning wheel 339 is reduced, and the -shaped seat 338 slides out of the through hole 3371 to drive the tensioning wheel 339 to prop the first conveyor belt 335, so that the first conveyor belt 335 is always in a tensioning state.

Referring to fig. 1, 3 and 5, a fixing mechanism 4 is disposed at the bottom of the transverse plate 31, the fixing mechanism 4 includes a circular shaft 41 fixed on the lower surface of the transverse plate 31, the circular shaft 41 is located between two first rotating shafts 331, the circular shaft 41 penetrates through the inside of the second conveyor 34, a pushing table 45 is fixedly mounted in the middle of the outer surface of the circular shaft 41, the diameter of the pushing table 45 gradually increases from bottom to top, a mounting ring 42 is slidably sleeved below the pushing table 45 outside the circular shaft 41, and a plurality of circumferentially distributed inner support assemblies 44 are slidably disposed on the mounting ring 42 along the radial direction thereof.

Referring to fig. 6, 7 and 8, a plurality of circumferentially distributed limiting plates 43 are fixedly disposed on the outer surface of the circular shaft 41, the top of the limiting plates 43 is in contact with the bottom of the mounting ring 42, the limiting plates 43 are alternately distributed with the inner supporting component 44, a plurality of circumferentially distributed rectangular through grooves 421 are formed in the top of the mounting ring 42, the inner supporting component 44 is located in the rectangular through grooves 421 and moves along the radial direction of the mounting ring 42, the inner supporting component 44 comprises two rectangular strips 441 fixed at the bottom end inside the rectangular through grooves 421, the two rectangular strips 441 are distributed on the inner walls of the two rectangular through grooves 421, a space exists between the two rectangular strips 441, a moving plate 442 is slidably disposed at the top of the two rectangular strips 441, the moving plate 442 is fixedly connected with one inner wall of the rectangular through grooves by a compression spring 445, the bottom end of the rectangular strips 441 is also connected with an L-shaped connecting rod 443, a vertical section of the L-shaped connecting rod 443 passes through the space between the two rectangular strips 441 to the lower side, the horizontal section of the L-shaped connecting rod 441 and the bottom section of the L-shaped connecting rod 441 is pushed by the L-shaped connecting rod 443, and the bottom section of the L-shaped connecting rod 441 is pushed by the roller table 446 to be close to the roller table 45, and the roller table 45 is pushed by the roller table 45.

When the fixing mechanism 4 is not in operation, the mounting ring 42 is in contact with the upper surface of the limiting plate 43, and the pushing table 45 is not in contact with the roller 446.

The working process comprises the following steps: the body 5 is placed on the base 1 at first, and preliminary positioning is carried out on the body 5 by utilizing the preliminary positioning group, then the cylinder 2 works to drive the transverse plate 31 to descend, at this moment, the fixing mechanism 4 also descends synchronously therewith, afterwards, the round shaft 41 and the arc-shaped inner supporting plate 444 are inserted into the sound hole 51, the round shaft 41 is not required to be completely aligned with the center of the sound hole 51, only the fact that all the arc-shaped inner supporting plates 444 can enter the sound hole 51 is guaranteed, the lower surface of the mounting ring 42 can be firstly contacted with the upper surface of the body 5 in the continuous descending process of the round shaft 41, at this moment, the round shaft 41 descends continuously, the mounting ring 42 is limited to descend, the pushing table 45 gradually reduces a gap between the round shaft 41 and the roller 446 to finally push the roller 446 to move, the moving plate 442 drives the arc-shaped inner supporting plate 444 to expand synchronously, the position of the body 5 is calibrated through the arc-shaped inner supporting plate 444 until the arc-shaped inner supporting plate 444 is fixedly supported on the body 5, at the moment, the round shaft 41 descends continuously, the mounting ring 42 is limited by the two side frames of the motor is completely and the two polishing units are completely pressed close to the base 32 after the two polishing units are completely lowered, and the two polishing units are completely pressed together with the base 32 are completely and the base is completely moved.

In addition, the utility model also provides a guitar automatic frame grinding method, which is specifically completed by adopting a guitar automatic frame grinding device, and comprises the following steps: s1, preliminary fixing of the body 5: the body 5 is manually placed on the upper surface of the base 1 according to the view angle of fig. 1, then the winding mechanism works to wind the rope, the pulling force of the rope to the cylinder seat 13 overcomes the adsorption force of the strong magnetic force end of the waist-shaped ring 12 to the cylinder seat 13, so that the cylinder seat 13 approaches to the body 5 under the action of the pulling force, when the semicircular ball 14 is in contact with the body 5, the winding mechanism does not work any more, and the semicircular balls 14 on the six cylinder seats 13 perform preliminary positioning on the body 5.

S2, locking and fixing after fine adjustment of the body 5: then the cylinder 2 works to drive the transverse plate 31 to descend, at this moment, the polishing assembly 33 and the fixing mechanism 4 descend synchronously, the round shaft 41 descends to enable the bottom end of the round shaft 41 and the arc-shaped inner supporting plate 444 to be inserted into the sound hole 51, the round shaft 41 continuously descends until the lower surface of the mounting ring 42 is in contact with the upper surface of the body 5, at this moment, the round shaft 41 continues to descend, the mounting ring 42 is limited and does not descend any more, the pushing table 45 gradually pushes the moving plate 442 to move in the descending process along with the round shaft 41, so that the moving plate 442 drives the arc-shaped inner supporting plate 444 to expand synchronously, at this moment, the compression spring 445 is compressed and deformed gradually, fine adjustment and calibration are carried out on the position of the body 5 through the arc-shaped inner supporting plate 444 which moves synchronously until the arc-shaped inner supporting plate 444 supports and fixes the body 5, then the winding mechanism continues to wind the ropes, pulls the round cylinder seat 13 to approach the body 5 until the semi-round balls 14 are in contact with the body 5, and the multiple semi-round balls 14 play a role of multi-point limiting on the edge of the body 5.

S3, polishing the frame of the body 5: in the synchronous descending process of the polishing assembly 33, when the bottom end of the polishing roller 336 is about to be close to the upper surface of the body 5, the elastic telescopic bracket 333 needs to be pulled outwards manually to enable the elastic telescopic bracket 333 to extend, the polishing roller 336 is correspondingly enabled to be attached to the frame of the body 5, after the body 5 is completely fixed by the fixing mechanism 4, the two polishing rollers 336 are also moved to a position close to the upper surface of the base 1, afterwards, the cylinder 2 stops contracting, the bi-directional motor 32 is started, the bi-directional motor 32 drives one of the first rotating shafts 331 to rotate, the other first rotating shaft 331 synchronously rotates under the transmission action of the belt pulley 332 and the second conveyor belt 34, the two first rotating shafts 331 drive the elastic telescopic bracket 333 and the polishing roller 336 which are respectively connected to synchronously rotate, meanwhile, the second rotating shafts 334 also drive the polishing roller 336 to rotate under the transmission action of the first conveyor belt 335, the polishing roller 336 is always contacted with the frame of the body 5 in the process of moving along the frame of the body 5, thereby finishing polishing of the frame of the body 5, when the polishing roller 336 pushes the first rotating shaft 331 to rotate, the second rotating shaft 331 drives the semi-spherical ball 14 to retract under the action of the single semi-spherical ball 14, and the semi-spherical ball 14 is not influenced by the action of the semi-spherical ball 14, and the rest semi-spherical ball 14 is retracted under the action of the semi-spherical ball 14 is not influenced by the action of the single semi-spherical ball 14.

It should be noted that: after the body 5 is fixed by the fixing mechanism 4 and the preliminary positioning set, the axes of the first rotating shafts 331 are approximately aligned to the centers of the two halves of the body 5, (as shown in fig. 10), and the polishing rollers 336 on the first rotating shafts 331 respectively polish the two halves of the body 5 in a reciprocating manner, that is, the rotation angle of the first rotating shafts 331 ranges from 270 degrees to 360 degrees, so that polishing by only one polishing roller 336 is avoided, and the deformation degree of the elastic telescopic bracket 333 in the polishing process is too large.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or slidably connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle according to the present utility model should be covered in the protection scope of the present utility model.

Claims

1. An automatic frame device that grinds of guitar, its characterized in that: including base (1) and the grinding machanism (3) that are used for placing body (5) that are used for polishing to the curb plate of body (5) of setting in base (1) top, base (1) are circular hollow structure, are provided with preliminary location group on base (1), the upper surface of base (1) is close to edge fixed mounting has cylinder (2), and the top of cylinder (2) is provided with grinding machanism (3), grinding machanism (3) including diaphragm (31) of fixed connection at cylinder (2) top, the lower surface rotation of diaphragm (31) is provided with two grinding assemblies (33), the bottom of diaphragm (31) is provided with fixed establishment (4), fixed establishment (4) are including fixing round axle (41) at diaphragm (31) lower surface, and round axle (41) are located between two grinding assemblies (33).

One end of the upper surface of the transverse plate (31) far away from the air cylinder (2) is provided with a bidirectional motor (32), the polishing assembly (33) comprises a first rotating shaft (331) which is rotatably arranged on the lower surface of the transverse plate (31), one of the first rotating shafts (331) is fixedly connected with the output end of the bidirectional motor (32), a belt wheel (332) is fixedly sleeved on the first rotating shaft (331), the two belt wheels (332) are in transmission connection through a second conveying belt (34), the bottom end of the first rotating shaft (331) is fixedly connected with an elastic telescopic bracket (333), the end part of the elastic telescopic bracket (333) is rotatably provided with a second rotating shaft (334), and the bottom end of the second rotating shaft (334) is fixedly provided with a polishing roller (336);

the second rotating shaft (334) penetrates through the end part of the elastic telescopic support (333), the top end of the second rotating shaft (334) is in transmission connection with the first rotating shaft (331) through a first conveyor belt (335), a vertical rod (337) is vertically arranged at the top of the elastic telescopic support (333), the vertical rod (337) is positioned in the first conveyor belt (335), a through hole (3371) is formed in one side of the vertical rod (337) facing the first conveyor belt (335), a -shaped seat (338) is elastically and slidably connected in the through hole (3371), a tensioning wheel (339) is rotatably arranged at the opening of the -shaped seat (338), and the tensioning wheel (339) is in contact with the first conveyor belt (335);

the middle part of the outer surface of the circular shaft (41) is fixedly provided with a pushing table (45), the diameter of the pushing table (45) is gradually increased from bottom to top, a mounting ring (42) is sleeved on the outer part of the circular shaft (41) and positioned below the pushing table (45) in a sliding manner, a plurality of circumferentially distributed inner support assemblies (44) are slidably arranged on the mounting ring (42) along the radial direction of the mounting ring, a plurality of circumferentially distributed limiting plates (43) are fixedly arranged on the outer surface of the circular shaft (41), and the top of the limiting plates (43) are contacted with the bottom of the mounting ring (42);

a plurality of circumferentially distributed rectangular through grooves (421) are formed in the top of the mounting ring (42), the inner support assembly (44) is located in the rectangular through grooves (421) and moves along the radial direction of the mounting ring (42).

2. The automatic guitar framing device of claim 1, wherein: the polishing roller (336) comprises a mounting frame (3361) fixed at the bottom end of the second rotating shaft (334), wherein the mounting frame (3361) is composed of a circular plate and a plurality of arc strips which are integrally formed on the lower surface of the circular plate and are distributed circumferentially, and polishing sheets (3362) are embedded between two adjacent arc strips.

3. The automatic guitar framing device of claim 1, wherein: the preliminary positioning group comprises sliding grooves (11), waist-shaped rings (12), cylinder seats (13) and semi-balls (14), two groups of symmetrical sliding grooves (11) are formed in the upper surface of the base (1), each group of sliding grooves (11) comprises three sliding grooves (11) which are parallel to each other and are not flush in end parts, the waist-shaped rings (12) are arranged in the sliding grooves (11) by means of bottom end fixing, the cylinder seats (13) are slidably arranged on the upper surface of the waist-shaped rings (12) in the sliding grooves (11), ropes penetrating through the waist-shaped rings (12) are connected to the bottoms of all the cylinder seats (13), the other ends of the ropes are wound on winding mechanisms arranged in the base (1), and the semi-balls (14) are elastically and slidably connected to the tops of the cylinder seats (13).

4. An automatic guitar framing device as in claim 3 wherein: the cylindrical seat (13) is made of metal, the waist-shaped ring (12) is an electromagnet, and the magnetism of the waist-shaped ring (12) is gradually enhanced from one end close to the body (5) to one end far away from the body (5).

5. The automatic guitar framing device of claim 1, wherein: the inner support assembly (44) comprises two rectangular strips (441) fixed at the bottom end inside the rectangular through groove (421), the two rectangular strips (441) are distributed on the inner walls of the two sides of the rectangular through groove (421), a gap exists between the two rectangular strips (441), the tops of the two rectangular strips (441) are provided with a movable plate (442) in a sliding mode, the movable plate (442) is fixedly connected with the inner wall of one side of the rectangular through groove (421) through a compression spring (445), the bottom end of the rectangular strip (441) is further connected with an L-shaped connecting rod (443), the vertical section of the L-shaped connecting rod (443) passes through the gap between the two rectangular strips (441) and is led to the lower side, a gap exists between the horizontal section of the L-shaped connecting rod (443) and the bottom of the rectangular strips (441), the end of the horizontal section of the L-shaped connecting rod (443) is fixedly connected with an arc-shaped inner support plate (444), and the top end of the movable plate (442) is close to one side of the pushing table (45) to rotate and is embedded with a roller (446).

6. An automatic guitar frame grinding method which is completed by adopting the automatic guitar frame grinding device as claimed in claim 5, and specifically comprises the following steps:

s1, preliminary fixing of a body: manually placing the body on the upper surface of the base (1), and primarily positioning the body by the primary positioning group;

s2, locking and fixing after fine tuning of the body: then the cylinder (2) works to drive the transverse plate (31) to descend, at the moment, the polishing assembly (33) and the fixing mechanism (4) synchronously descend, the round shaft (41) descends to enable the bottom end of the round shaft and the arc-shaped inner supporting plate (444) to be inserted into the sound hole first, the round shaft (41) continuously descends until the lower surface of the mounting ring (42) is in contact with the upper surface of the body, at the moment, the round shaft (41) continuously descends, the mounting ring (42) is limited and does not descend any more, the pushing table (45) gradually pushes the moving plate (442) to move in the descending process along with the round shaft (41), the moving plate (442) drives the arc-shaped inner supporting plate (444) to synchronously expand outwards, at the moment, the compression spring (445) is gradually compressed to deform, fine adjustment is carried out on the position of the body through the arc-shaped inner supporting plate (444) until the arc-shaped inner supporting plate (444) supports the body, and then the preliminary positioning group plays a role of multipoint limiting on the edge of the body;

s3, polishing the frame of the body: after the body is completely fixed by the fixing mechanism (4), the cylinder (2) stops shrinking, and the two polishing assemblies (33) are utilized to polish the frame of the body in a reciprocating manner.