CN114789377A

CN114789377A - High accuracy is edging device of little hardware for trampoline

Info

Publication number: CN114789377A
Application number: CN202210702312.1A
Authority: CN
Inventors: 孙必胜
Original assignee: Yangzhou Kangle Machinery Co ltd
Current assignee: Yangzhou Kangle Machinery Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-07-26

Abstract

The invention relates to the technical field of grinding and polishing equipment and discloses an edge grinding device for a small hardware for a high-precision trampoline. According to the invention, the adsorption part and the collection part movably sleeved with the adsorption part are arranged on the two sides of the grinding wheel, the transverse block is driven to rotate by the rotation of the grinding wheel, so that the transverse block is in discontinuous contact with the push rod and extrudes the push rod, and further the push membrane is driven to stretch and retract in a reciprocating manner, so that the form of the telescopic membrane is changed continuously, the opening of the side hole is realized, the air flow suction force is generated on the edge grinding part, the air near the edge grinding part is driven to move, the surface temperature of the edge grinding part is reduced, metal scraps are adsorbed into the adsorption part, and the scraps are prevented from scattering on the surface of the edge grinding part.

Description

High accuracy is edging device of little hardware for trampoline

Technical Field

The invention relates to the technical field of grinding and polishing equipment, in particular to an edge grinding device for a small hardware for a high-precision trampoline.

Background

The small hardware is mainly a general name of metal devices and certain small tools installed on buildings or furniture, such as nails, screws, hinges, springs and the like, and in the processing process of the small hardware, the edge of the small hardware can form a plurality of burrs and burrs which can affect the later processing and use of the hardware, so that the small hardware is polished smoothly by using an edge polishing device in order to meet the production requirements. The existing edge grinding device mainly comprises a lifting mechanism, a grinding wheel and a fixing mechanism, wherein the fixing mechanism is used for fixing a small hardware, the lifting mechanism is used for enabling the grinding wheel to be in contact with a position, needing to be polished, of the hardware, and then the grinding wheel is driven by a motor to carry out edge grinding treatment on the hardware.

However, the existing edge grinding device has some defects in the using process: little hardware can produce metal scrap when the edging to part metal scrap can be attached to the surface of little hardware, and both frictions can produce the high fever when utilizing the edging device to polish, and then the body surface temperature of little hardware risees, easily causes the piece to produce the phenomenon of scorching on its surface from this, appears the black material deposit promptly, leads to its edging effect poor.

Disclosure of Invention

Aiming at the defects of the existing edge grinding device in the use process in the background technology, the invention provides the edge grinding device for the small hardware for the high-precision trampoline, which has the advantages of effectively reducing the body surface temperature of the small hardware, adsorbing and collecting metal fragments, improving the edge grinding effect and solving the technical problems in the background technology.

The invention provides the following technical scheme: the utility model provides a high accuracy is edging device of little hardware for trampoline, includes the workstation, the top swing joint of workstation has edging piece, is located the lift post has been placed on the ground of workstation both sides, two be provided with the main shaft between the lift post, be located the fixed emery wheel that has cup jointed of main shaft surface on edging piece top, the both sides wall face fixedly connected with horizontal piece of emery wheel is located the lift post surface and the adsorption piece activity of emery wheel both sides cup joint, the one end of horizontal piece and the lateral wall contact of adsorption piece lie in the adsorption piece inside of main shaft below has seted up epicoele, lumen and cavity of resorption from top to bottom, and epicoele, lumen and cavity of resorption are linked together, the inside of epicoele is provided with pushing mechanism, the inside of lumen is provided with adsorption apparatus, lies in the adsorption piece wall of adsorption mechanism both sides has seted up the side opening, the last of side opening, The inner wall articulates there is the shutoff board down, and passes through oblique spring coupling between shutoff board and the side opening wall, the inside activity of cavity of resorption has cup jointed the collection piece, and collects the top of piece and adsorbs through shrink spring coupling between the bottom of piece.

Preferably, pushing mechanism comprises promotion membrane, catch bar and promotion pipe, keeps away from the epicoele inner wall of edging spare and one side fixed connection who promotes the membrane, the opposite side of promotion membrane and the one end fixed connection of catch bar, the other end of catch bar runs through the wall that adsorbs the piece, and the catch bar corresponds with the horizontal block position, horizontal spring has been cup jointed in the outside activity of catch bar, and the both ends of horizontal spring respectively with catch bar and epicoele inner wall connection, the bottom of promotion membrane communicates with the one end of promotion pipe.

Preferably, the adsorption device consists of a pipe fitting, a telescopic membrane, a baffle plate and an expansion piece, two ends of the pipe fitting are fixedly connected with the inner walls of two sides of the middle cavity, the interior of the pipe fitting is communicated with the side hole, the middle part of the inner wall of the pipe fitting is fixedly sleeved with the telescopic membrane, the inner walls of the pipe fittings positioned at the two sides of the telescopic membrane are fixedly sleeved with the baffle plates, the baffle plates are provided with air holes and middle holes, the middle holes are positioned at the middle parts of the baffle plates, the expansion piece is fixedly connected with the side wall of the telescopic film corresponding to the middle hole of the baffle plate and consists of two rotating rods and a rotating film, the rotating rods are positioned at the upper end and the lower end of the rotating film, and the dwang with rotate between the membrane fixed connection, the one end of dwang is articulated with flexible membrane, the top of flexible membrane communicates with the other end of propelling movement pipe, the inclined hole has been seted up on the surface of pipe fitting, the inclined hole passes through the side spring and is connected with the shutoff piece.

Preferably, the number of the transverse blocks positioned on one side of the grinding wheel is two, and the transverse blocks are uniformly arranged around the main shaft.

Preferably, the pushing membrane is made of rubber, and the cross section of the end of the pushing rod in contact with the cross block is in a semi-elliptical shape.

Preferably, the cross section of the pipe fitting is in a double-head trumpet shape with a thin middle part and two thick sides.

Preferably, be close to the inclined hole of edging spare is located the lower extreme of pipe fitting, and the shutoff piece is located the outside of pipe fitting, keeps away from the inclined hole of edging spare is located the upper end of pipe fitting, and the shutoff piece is located the inside of pipe fitting, the shutoff piece is coniform, and the bottom surface diameter of shutoff piece is compared in the diameter of inclined hole greatly.

Preferably, the section of the telescopic membrane is in the shape of a semicircle at two sides and a rectangle at the middle part, and the telescopic membrane is made of rubber.

Preferably, the side hole is square in cross section shape, the cross section shape is a combination of trapezoid and rectangle, two plugging plates in one side hole are in an arrow shape when in contact, and the direction points to one side far away from the edging piece.

The invention has the following beneficial effects:

1. according to the invention, the adsorption piece and the collection piece movably sleeved with the adsorption piece are arranged on the two sides of the grinding wheel, the grinding wheel is rotated to drive the transverse block to rotate, so that the transverse block is in discontinuous contact with the push rod and extrudes the push rod, and the push membrane is further driven to stretch and retract in a reciprocating manner, so that the form of the telescopic membrane is continuously changed, the opening of the side hole is realized, the airflow suction force is generated on the edge grinding piece, the air near the edge grinding piece is driven to move, the surface temperature of the edge grinding piece is reduced, metal fragments are adsorbed into the adsorption piece, the fragments are prevented from scattering on the surface of the edge grinding piece, and the operation can effectively prevent the fragments from burning on the surface of the edge grinding piece to generate black precipitates, and the edge grinding effect of the edge grinding piece is improved.

2. According to the invention, the pipe fitting is arranged on the outer side of the telescopic membrane, the inclined hole and the plugging block are arranged on two sides of the pipe fitting, the baffle plate and the expansion piece are arranged on two sides of the telescopic membrane, the inclined hole close to the side of the edging piece is opened when the telescopic membrane expands, so that debris in the pipe fitting is collected into the collection piece, the side hole far away from the side of the edging piece is opened, gas with heat is discharged, and the debris cannot be discharged, so that the air flow is driven to do circulating motion, the heat is locally and rapidly dissipated, the temperature of the part is reduced, the debris is effectively collected, and the adsorption piece cannot be discharged due to the movement of the air flow.

3. According to the invention, the adsorption piece and the collection piece are movably sleeved, and the adsorption piece and the collection piece are connected through the contraction spring, so that the collection piece can adjust the extension distance according to the size height of the edge grinding piece, the bottom end of the collection piece is ensured to be always contacted with the top end of the workbench, stable thrust is provided for the adsorption piece and the collection piece, the adsorption piece and the collection piece are enabled to have high stability in working, meanwhile, the collection piece is further enhanced in movement stability as the weight of the collection piece is continuously increased along with the increase of the number of fragments, and the adsorption piece is effectively prevented from being influenced by the movement of the main shaft to clean and collect the fragments.

Drawings

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention at a front view angle;

FIG. 3 is an enlarged view of a portion of the structure shown in FIG. 2;

FIG. 4 is a partial structural view of the stretchable membrane and its components shown in FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of a portion of the structure B shown in FIG. 3 according to the present invention;

FIG. 6 is an enlarged view of a portion of the structure of FIG. 3;

FIG. 7 is a schematic side sectional view of the present invention at the position of the absorbing member and the collecting member;

FIG. 8 is a side view of the outer structure of the collecting member of the present invention;

FIG. 9 is a side view of the grinding wheel of the present invention at the cross block position.

In the figure: 1. a work table; 11. grinding an edge part; 2. a lifting column; 21. a main shaft; 3. a grinding wheel; 31. a transverse block; 4. an adsorbing member; 41. an upper chamber; 42. a middle cavity; 43. a lower cavity; 44. a side hole; 5. a collecting member; 6. pushing the membrane; 61. a push rod; 62. pushing the pipe; 7. a pipe fitting; 70. an inclined hole; 71. a plugging block; 8. a stretch film; 81. a baffle plate; 82. rotating the rod; 83. rotating the film; 9. a plugging plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-2, an edge grinding device for a small hardware for a high-precision trampoline comprises a workbench 1, wherein an edge grinding part 11 is movably connected to the top end of the workbench 1, the edge grinding part 11 is composed of a fixing mechanism and the small hardware, the fixing mechanism is used for fixing the small hardware and preventing the small hardware from moving in an edge grinding process to cause poor grinding effect, lifting columns 2 are placed on the ground on two sides of the workbench 1, a main shaft 21 is arranged between the two lifting columns 2, the main shaft 21 can be used for lifting operations up and down by using the parts in the lifting columns 2, one end of the main shaft 21 is movably connected with a motor, and the motor is placed in the lifting columns 2.

Referring to fig. 2 and 9, further, the grinding wheel 3 is fixedly sleeved on the outer surface of the main shaft 21 at the top end of the edge grinding piece 11, two transverse blocks 31 are fixedly connected to two side wall surfaces of the grinding wheel 3, and the number of the transverse blocks 31 at one side of the grinding wheel 3 is two and the transverse blocks are uniformly arranged around the main shaft 21, so that the transverse blocks 31 can be in contact with the adsorbing piece 4 and the push rod 61 in the rotating process, and the inward pushing effect on the push rod 61 is realized.

Referring to fig. 2, 7-8, further, the outer surfaces of the lifting columns 2 at both sides of the grinding wheel 3 are movably sleeved with the adsorption member 4, one end of the cross block 31 is in contact with the side wall of the adsorption member 4, the adsorption member 4 below the spindle 21 is internally provided with an upper cavity 41, a middle cavity 42 and a lower cavity 43 from top to bottom, the upper cavity 41, the middle cavity 42 and the lower cavity 43 are communicated, the collection member 5 is movably sleeved inside the lower cavity 43, the top end of the collection member 5 is connected with the bottom end of the adsorption member 4 through a shrinkage spring, the bottom plate of the collection member 5 is connected with the main body in a clamping manner, and a pulling block is arranged outside the bottom plate, so that the bottom plate of the collection member 5 can be pulled, and metal debris in the bottom plate can be discharged and cleaned.

Referring to fig. 3 and 7, further, a pushing mechanism is disposed inside the upper chamber 41, the pushing mechanism is composed of a pushing membrane 6, a pushing rod 61 and a pushing tube 62, the inner wall of the upper chamber 41 far away from the edging 11 is fixedly connected to one side of the pushing membrane 6 made of rubber, the other side of the pushing membrane 6 is fixedly connected to one end of the pushing rod 61, the other end of the pushing rod 61 penetrates through the wall surface of the adsorbing member 4, the pushing rod 61 corresponds to the position of the cross block 31, the cross section of the end of the pushing rod 61 contacting with the cross block 31 is semi-elliptical, when the transverse block 31 rotates to gradually contact with the push rod 61, the push rod 61 can be pushed to displace along the inclined surface of the push rod 61 step by step to realize the extrusion of the push membrane 6, the outer side of the push rod 61 is movably sleeved with a transverse spring, and both ends of the transverse spring are respectively connected with the push rod 61 and the inner wall of the upper cavity 41, and the bottom end of the push membrane 6 is communicated with one end of the push pipe 62.

Referring to fig. 3, 6-7, further, an adsorption mechanism is disposed inside the middle cavity 42, the adsorption mechanism is composed of a pipe 7, a telescopic membrane 8, a baffle 81 and an expansion member, the pipe 7 has a double-head trumpet shape with a thin middle part and thick two sides, which enables debris sucked into the pipe 7 by following air flow to fall down along an inclined plane due to its own gravity, so as to facilitate the later-stage collection of the debris, two ends of the pipe 7 are fixedly connected with the inner walls of the two sides of the middle cavity 42, the middle part of the inner wall of the pipe 7 is fixedly sleeved with the telescopic membrane 8, the telescopic membrane 8 has a semicircular shape with two sides and a rectangular shape with a middle part, the telescopic membrane 8 is made of rubber, which can expand from both sides after air is introduced, the top end of the telescopic membrane 8 is communicated with the other end of the push pipe 62, an inclined hole 70 is disposed on the surface of the pipe 7, the inclined hole 70 is connected with a plugging block 71 through a side spring, and the plugging block 71 is conical, and the diameter of the bottom surface of the plugging block 71 is larger than that of the inclined hole 70, so as to ensure that the plugging block 71 effectively plugs the inclined hole 70, and to realize the sealing of the inclined hole 70, specifically, the inclined hole 70 close to the edging piece 11 is located at the lower end of the pipe fitting 7, and the plugging block 71 is located outside the pipe fitting 7, so that when the telescopic membrane 8 expands, the plugging block 71 is pushed to open the inclined hole 70, so that the debris moves into the lower cavity 43 until entering the collecting piece 5, the inclined hole 70 far away from the edging piece 11 is located at the upper end of the pipe fitting 7, and the plugging block 71 is located inside the pipe fitting 7, so that when the telescopic membrane 8 expands, the plugging plate 9 at this position opens the side hole 44, so that the gas carrying heat in the lower cavity 43 and the collecting piece 5 is discharged out of the adsorbing piece 4 by the side hole 44, so as to realize the circulation of the gas flow and the exchange and emission of the heat, and at the inclined hole 70 above also makes the debris not easily enter the pipe fitting 7 at this side, the debris is effectively prevented from being discharged out of the adsorbing member 4.

Referring to fig. 3 to 4, further, the inner wall of the pipe 7 at both sides of the flexible membrane 8 is fixedly sleeved with a baffle 81, the baffle 81 is provided with an air hole and a middle hole, the middle hole is located in the middle of the baffle 81, the side wall of the flexible membrane 8 corresponding to the middle hole of the baffle 81 is fixedly connected with an expansion piece, the expansion piece is composed of two rotating rods 82 and a rotating membrane 83, the rotating rods 82 are located at the upper end and the lower end of the rotating membrane 83, and the rotating rods 82 and the rotating membrane 83 are fixedly connected to form a sealed expansion piece, one end of the rotating rod 82 is hinged to the flexible membrane 8, and can further push the rotating rod 82 to move outwards when the flexible membrane 8 expands, so that the expansion piece expands, the volume in the pipe 7 further decreases, and the rotating rod 82 is driven to move inwards when the flexible membrane 8 contracts, so that the expansion piece is restricted by the baffle 81 to contract, and the volume in the pipe 7 further increases, therefore, when the telescopic membrane 8 is telescopic, the volume difference in the pipe fitting 7 is large, the air pressure difference is large, strong suction can be generated, and the adsorption effect on metal fragments can be realized.

Referring to fig. 3 and 5, further, side holes 44 are formed in wall surfaces of the adsorbing members 4 located at both sides of the pipe 7, the inside of the pipe 7 is communicated with the side holes 44, the side holes 44 are square in cross section and have a combination of trapezoid and rectangle in cross section, the upper and lower inner walls of the side holes 44 are hinged with the plugging plates 9, and the plugging plates 9 are connected with the wall surfaces of the side holes 44 through inclined springs, meanwhile, the two plugging plates 9 located inside one side hole 44 are arrow-shaped when in contact and point to one side far away from the edge grinding member 11, so that the plugging plates 9 can be opened by a force in the same direction as the arrow direction and closed by a force opposite to the arrow direction, thereby opening and plugging the side holes 44.

The using method of the invention has the following working principle:

the small hardware is fixedly arranged at the top end of a workbench 1 to be an edging piece 11, a main shaft 21 is controlled to move downwards by utilizing a lifting column 2, the bottom end of a grinding wheel 3 is in contact with the position to be edged of the edging piece 11, the bottom end of a collecting piece 5 is in contact with the top end of the workbench 1, the collecting piece 5 moves towards the inside of an adsorbing piece 4 along with the continuous downward movement of the adsorbing piece 4, a contraction spring is stretched, the tension force of the contraction spring ensures the stable placement of the adsorbing piece 4 and the collecting piece 5, then a motor is started, the main shaft 21 drives the grinding wheel 3 to rotate, the edging piece 11 is subjected to edging operation, a cross block 31 is also driven to rotate, when the cross block 31 rotates to be in contact with one end of a push rod 61, the push rod 61 is extruded to move into the adsorbing piece 4, so that the push membrane 6 is pushed to contract, gas in the push membrane 6 enters the telescopic membrane 8 along a push pipe 62, and two sides of the telescopic membrane 8 are expanded, the space in the pipe fitting 7 is reduced, the air pressure is increased, and the expansion piece is driven to move at the same time, so that the baffle plate 81 reduces the blocking effect on the expansion piece, the expansion piece expands and becomes larger, and further the space in the pipe fitting 7 is reduced, and the air pressure is further increased, specifically, the inner part of the pipe fitting 7 side close to the edge grinding piece 11 is close to, due to the increase of the air pressure, two plugging plates 9 are contacted and cannot rotate outwards, namely, the side hole 44 is in a closed state, and the plugging block 71 below the pipe fitting 7 is influenced by the air pressure to open the inclined hole 70, so that the scraps in the pipe fitting 7 move into the outer part of the pipe fitting 7 along with the hot gas through the inclined hole 70 and finally fall into the collecting piece 5, and meanwhile, the inner part of the pipe fitting 7 side far away from the edge grinding piece 11 is closed, due to the increase of the air pressure, the internal plugging block 71 is influenced by the air pressure to close the inclined hole 70, and simultaneously, and the two plugging plates 9 rotate under the action of the air pressure, and further open the side hole 44, the hot gas which enters the pipe fitting 7 from the lower cavity 43 is discharged from the adsorption part 4, so that the heat transfer is realized;

when the transverse block 31 rotates to be separated from the contact with the push rod 61, the push rod 61 moves outwards under the action of the pulling force of the transverse spring, the push membrane 6 expands, the gas in the telescopic membrane 8 is transferred into the push membrane 6, so that the telescopic membrane 8 contracts, the space in the pipe fitting 7 increases, the air pressure decreases, and meanwhile, the expansion piece is driven to move, so that the baffle plate 81 provides a blocking effect for the expansion piece, the rotating rod 82 of the expansion piece rotates under the obstruction of the baffle plate 81, the volume of the expansion piece is reduced, the space in the pipe fitting 7 is further increased, the air pressure is further reduced, specifically, the inner side of the pipe fitting 7 close to the edge grinding piece 11 is provided with a blocking block 71 for sealing the inclined hole 70 due to the reduction of the air pressure, the side hole 44 is opened by the blocking plate 9 under the action of the suction force, so that the edge grinding position is adsorbed by the side hole 44, and the hot gas at the edge grinding piece 11 enters the inner side of the pipe fitting 7 with metal chips, the metal cleaning and the temperature reduction on the surface of the edge grinding piece 11 are realized, meanwhile, the inner part of the side of the pipe fitting 7 far away from the edge grinding piece 11 is reduced due to the reduction of the air pressure, the inclined hole 70 is opened by the suction effect of the part of the plugging block 71, so that the hot gas transferred into the middle cavity 42 enters the part of the pipe fitting 7 to provide conditions for the subsequent hot gas to be transferred out of the adsorption piece 4, meanwhile, as the hot gas enters the pipe fitting 7 from the upper part of the pipe fitting 7, the suction force acts on the space above the middle cavity 42 firstly and then acts on the space below the middle cavity 42, so that the suction force is gradually reduced along with the increase of the distance, and the metal debris mainly exist in the space below the middle cavity 42, the lower cavity 43 and the collection cavity 5, so that the metal debris cannot move upwards against the self gravity due to the small suction force, even if part of the metal debris moves upwards, the blocking effect of the outer wall of the pipe fitting 7 is also realized, and the metal debris is effectively prevented from entering the pipe fitting 7 along with the air, guarantee clastic effective collection, prevent that the piece from scattering, to sum up flexible membrane 8 receives promotion membrane 6 and part effect and reciprocal shrink and inflation to and the shrink and the inflation of expansion piece, all effectively change 7 interior gas pressures of pipe fitting, make the increase of its interior atmospheric pressure difference, thereby constantly produce the air current to edging piece 11 and adsorb, guarantee that the piece can be effectively adsorbed the collection, its heat can in time discharge, thereby guarantee the normal clear of its edging work, improve its edging effect.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high accuracy is edging device of little hardware for trampoline, includes workstation (1), the top swing joint of workstation (1) has edging spare (11), is located lift post (2) have been placed on the ground of workstation (1) both sides, two be provided with main shaft (21) between lift post (2), be located spindle (21) the outer fixed surface on edging spare (11) top has cup jointed emery wheel (3), its characterized in that: both sides wall fixedly connected with horizontal piece (31) of emery wheel (3), be located the lift post (2) surface and the absorption piece (4) activity of emery wheel (3) both sides are cup jointed, the one end of horizontal piece (31) contacts with the lateral wall of absorption piece (4), are located absorption piece (4) inside from top to bottom of main shaft (21) below has seted up epicoele (41), lumen (42) and lumen (43) down, and epicoele (41), lumen (42) and lumen (43) are linked together, the inside of epicoele (41) is provided with pushing mechanism, the inside of lumen (42) is provided with adsorption apparatus, is located absorption piece (4) wall of adsorption apparatus both sides has seted up side opening (44), the upper and lower inner wall of side opening (44) articulates there is shutoff board (9), and through oblique spring coupling between shutoff board (9) and side opening (44) wall, the inside activity of lower chamber (43) is cup jointed and is collected piece (5), and collects between the top of piece (5) and the bottom of adsorbing piece (4) through shrink spring coupling.

2. The edge grinding device for the hardware of the high precision trampoline according to claim 1, wherein: push mechanism comprises promotion membrane (6), catch bar (61) and promotion pipe (62), keeps away from one side fixed connection of epicoele (41) inner wall and promotion membrane (6) of edging spare (11), the opposite side of promotion membrane (6) and the one end fixed connection of catch bar (61), the wall of adsorbing piece (4) is run through to the other end of catch bar (61), and catch bar (61) correspond with crosspiece (31) position, the outside activity of catch bar (61) has cup jointed horizontal spring, and the both ends of horizontal spring respectively with catch bar (61) and epicoele (41) inner wall connection, the bottom of promotion membrane (6) communicates with the one end of pushing away pipe (62).

3. A high accuracy trampoline uses hardware's edging device according to claim 2, characterized in that: adsorption equipment comprises pipe fitting (7) and flexible membrane (8), baffle (81), expansion piece, the both ends of pipe fitting (7) and the both sides inner wall fixed connection of lumen (42), the inside and side opening (44) intercommunication of pipe fitting (7), the inner wall middle part of pipe fitting (7) and flexible membrane (8) fixed cup joint, are located the fixed cover of pipe fitting (7) inner wall of flexible membrane (8) both sides has connect baffle (81), seted up gas pocket and mesopore on baffle (81), and the mesopore is located the middle part of baffle (81), with flexible membrane (8) lateral wall fixed connection who corresponds in baffle (81) mesopore has the expansion piece, the expansion piece comprises two dwang (82) and one rotation membrane (83), dwang (82) are located the upper and lower extreme position of rotation membrane (83), and fixed connection between dwang (82) and rotation membrane (83), the one end and the flexible membrane (8) of dwang (82) are articulated, the top of flexible membrane (8) and the other end intercommunication that promotes pipe (62), inclined hole (70) have been seted up on the surface of pipe fitting (7), inclined hole (70) are connected with shutoff piece (71) through the side spring.

4. An edge grinding device of a small hardware for a high precision trampoline according to claim 1, wherein: the number of the transverse blocks (31) on one side of the grinding wheel (3) is two, and the transverse blocks are uniformly arranged around the main shaft (21).

5. A high accuracy trampoline uses hardware's edging device according to claim 2, characterized in that: the pushing membrane (6) is made of rubber, and the section of the end of the pushing rod (61) in contact with the transverse block (31) is in a semi-elliptical shape.

6. A high accuracy rim grinding device of hardware for trampoline according to claim 3, wherein: the section of the pipe fitting (7) is in a double-head trumpet shape with a thin middle part and thick two sides.

7. The edge grinding device for a hardware piece for a high precision trampoline according to claim 6, wherein: be close to inclined hole (70) of edging piece (11) are located the lower extreme of pipe fitting (7), and shutoff piece (71) are located the outside of pipe fitting (7), keep away from inclined hole (70) of edging piece (11) are located the upper end of pipe fitting (7), and shutoff piece (71) are located the inside of pipe fitting (7), shutoff piece (71) are coniform, and the bottom surface diameter of shutoff piece (71) is great than the diameter in inclined hole (70).

8. A high accuracy rim grinding device of hardware for trampoline according to claim 3, wherein: the section shape of the telescopic membrane (8) is semicircular at two sides and rectangular at the middle part, and the telescopic membrane (8) is made of rubber materials.

9. The edge grinding device for the hardware of the high precision trampoline according to claim 1, wherein: the side hole (44) is square in cross section shape, the cross section shape is a combination of trapezoid and rectangle, and is located one when two plugging plates (9) inside the side hole (44) are in contact, the two plugging plates are arrow-shaped, and the direction is directed to one side far away from the edging piece (11).