CN112222865B

CN112222865B - Nut processing machine tool

Info

Publication number: CN112222865B
Application number: CN202011067848.8A
Authority: CN
Inventors: 冯九辉
Original assignee: Taishan Dongyi Hardware Co ltd
Current assignee: Taishan Dongyi Hardware Co.,Ltd.
Priority date: 2020-10-07
Filing date: 2020-10-07
Publication date: 2021-12-10
Anticipated expiration: 2040-10-07
Also published as: CN112222865A

Abstract

The invention discloses a nut processing machine tool, the structure of which comprises: the invention discloses a machine tool rack, which comprises a machine frame strip rear seat, a machine tool rack plate, a machine tool rack cabin groove, a discharge hopper groove, a transmission case and a slag discharge chute.

Description

Nut processing machine tool

Technical Field

The invention discloses a nut processing machine tool, and belongs to the field of hardware processing.

Background

Screw, bolt, the nut processing of hardware need carry out effectual combined machining operation through the high multitool lathe of precision, and follow-up planing is cut and the precision of tapping commentaries on classics is reached with the sword in turn, promotes subsequent lathe machining efficiency and hardware batch production quality qualification rate, and the public shortcoming of treating the optimization of prior art has:

the edge planing processing and the internal thread processing of nut need to alternate chuck and interior bearing frame and form duplex position lathe processing effect, and the high strength processing of hardware wears the equipment in knife rest and the tool magazine for a long time easily, cause the uneven and crude tool bit of throwing of follow-up hardware to influence the quality of internal rotation planing and cutting, lead to the fact the phenomenon that the long-time short period repeatedly consumes labour regulation and control to knife sharpening volume and feed volume, lead to follow-up staff to the autonomy performance of lathe can not effectively maintain, continuously dismantle tool magazine and knife rest, fastening degree to the lathe causes the loss, let the cutter loosen inconvenient processing of collapsing, produce easily and hit the sword phenomenon.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a nut processing machine tool to solve the problems that the edge planing and the internal thread planing of a nut need to be inserted into a chuck and an inner support frame to form a double-station machine tool processing effect, the high-strength processing of hardware easily wears a tool rest and equipment in a tool magazine for a long time, a rough tool bit with uneven polished surface of subsequent hardware influences the internal rotation planing quality, the phenomenon of repeated consumption of labor force regulation and control for a long time and a short period is caused to the tool sharpening amount and the tool feeding amount, so that subsequent workers cannot maintain the autonomy performance of a machine tool effectively, the tool magazine and the tool rest are continuously disassembled, the fastening degree of the machine tool is lost, the tool is loosened and inconvenient to process, and the tool collision phenomenon is easily generated.

In order to achieve the purpose, the invention is realized by the following technical scheme: a nut machining tool structurally comprises: the device comprises a rack strip rear seat, a machine frame strip rear seat, a machining disc rack cabin groove, a discharging hopper groove, a transmission case and a slag discharging sliding groove, wherein the cabin door plate is mechanically connected with the machining disc rack cabin groove, the rack strip rear seat is inserted and embedded at the rear side of the machining disc rack cabin groove, the machining disc rack cabin groove is installed on the top of the transmission case, the discharging hopper groove is inserted and embedded at the front side of the transmission case and is communicated with the discharging hopper groove, the slag discharging sliding groove is welded at the right side of the transmission case, the machining disc rack cabin groove is provided with a cross-shaped frame rotary disc, a grinding cushion clamping ring, a corrugated tool rest cushion, a cutter blocking plate and a cutting feed side cabin groove, the cross-shaped frame rotary disc is installed inside the grinding cushion clamping ring, the axes of the cross-shaped frame rotary disc and the grinding cushion clamping ring are collinear, the cross-shaped frame rotary disc and the grinding cushion clamping ring are mechanically connected and are located on the same vertical surface, the cutter blocking plates are provided with four cross-shaped frame rotary discs and are respectively inserted and embedded at the left side and right side of the cutting side groove, the cross-shaped rotary disc is installed inside the cutting side cabin groove and is located on the same vertical surface, the corrugated tool rest pad is nested on the top of the feed side cabin groove and is positioned on the same vertical surface, and the feed side cabin groove is mechanically connected with the cabin door plate.

In order to optimize the technical scheme, the method further comprises the following steps:

as a further improvement of the invention, the cross-shaped frame rotary disc comprises an inner support folding bar block, an inner support bar, a double-track bar, an axle center wheel ring and a knife entering seam frame ring, wherein the inner support folding bar block and the inner support bar are buckled together, the double-track bar is inserted and embedded in the upper left corner of the inner support folding bar block, the double-track bar and the axle center wheel ring are mechanically connected and are positioned on the same vertical plane, and the inner support folding bar block and the knife entering seam frame ring are in interference fit.

As a further improvement of the invention, the inner stay folding strip block comprises a fan wheel seat, a torsion spring strip rod, a stay plate block and a frame-wrapping fan plate seat, wherein the fan wheel seat and the frame-wrapping fan plate seat are respectively arranged below the left side and the bottom of the stay plate block, and the torsion spring strip rod is inserted into the stay plate block and is positioned on the same inclined plane.

As a further improvement of the invention, the knife sharpening pad clamping ring consists of a knife sharpening pad block, a trapezoidal outer frame seat and a bundling frame ring, wherein the knife sharpening pad block and the trapezoidal outer frame seat are in interference fit, and the trapezoidal outer frame seat and the bundling frame ring are buckled together.

As a further improvement of the invention, the knife sharpening cushion block consists of a convex arc spring tube, an inner cavity of the petal groove and a frosted stone strip block, wherein the convex arc spring tube is arranged inside the inner cavity of the petal groove, and the convex arc spring tube is mechanically connected with the frosted stone strip block and is positioned on the same vertical surface.

As a further improvement of the invention, the outer trapezoidal frame base consists of a trapezoidal groove base, two support rods and two reinforcing rib buckling rods, wherein the support rods and the reinforcing rib buckling rods are buckled together and are positioned on the same vertical surface, and the two reinforcing rib buckling rods are respectively inserted and embedded on the left side and the right side of the trapezoidal groove base.

As a further improvement of the invention, the corrugated knife rest pad consists of more than two convex arc triangular pads and a corrugated hanging plate, wherein the convex arc triangular pads are arranged on the front side of the corrugated hanging plate, and the convex arc triangular pads are tightly attached to the corrugated hanging plate and are positioned on the same vertical surface.

As a further improvement of the invention, the convex arc triangular pad consists of a bevel groove rod, a three-fork inner pad frame and a triangular arc pad, wherein the bevel groove rod and the three-fork inner pad frame are inserted and embedded into a whole and are positioned on the same vertical plane, and the three-fork inner pad frame is arranged inside the three-corner arc pad.

As a further improvement of the invention, the stay plate is of a plate structure with right-angle convex blocks at the left side and the bottom and narrow arc strips in the middle, so that the lath arc stay can conveniently form a four-position wrapping and pressing inner ring surface external expansion bearing effect.

As a further improvement of the invention, the grinding stone strip block is of a stone block structure at the bottom edge of the narrow-band arc strip in the middle of the left width and the right width, so that the toughness of the grinding tool can be conveniently polished through the hardness of the grinding stone material, and the machining and cutting accuracy and goodness of fit of the nut can be improved.

As a further improvement of the invention, the trapezoidal groove seat is of a trapezoidal groove structure with narrow upper part and wide lower part, and is equilateral left and right, so that the annular clamp can be conveniently pressed and covered to form the peripheral tightening effect of the groove seat, and the regulation and control of the pressing and sticking amount and the feed amount of subsequent knife grinding are guaranteed.

As a further improvement of the invention, the trifurcate inner pad frame is a trifurcate frame structure with a long arc petal pad in the middle of a left short length and a right short length, so that the rims of the left trifurcate rod and the right trifurcate rod are conveniently retracted to form a pad protection frame knife effect of an externally-expanded tripod.

Advantageous effects

The invention relates to a nut processing machine tool, wherein a worker forms a chain belt hoisting tool rest feeding cutting processing nut operation by a machine frame strip rear seat plug-in cabin door plate and a rear side butt joint transmission case of a processing disc frame cabin groove, the finished product nut is output by a discharge hopper groove, then slag of metal chips is discharged through a slag discharge chute, a cutter outlet and a cutter blade before the middle nut processing are subjected to a pretreatment operation, an inner supporting folded strip of a cross frame rotary disc is wrapped by an inner supporting folded strip block to press an inner supporting rod and a double-track strip rod to rotate around an axis wheel ring and to be externally supported into a cutter gap frame ring, the end point of a butt joint supporting strip plate of a fan wheel seat and a wrapping frame fan plate seat is sleeved with a torsion spring wire rod to form an integral inner chamfering and outer supporting operation, the cutter blade of a cutter blade clamping ring is attached to a trapezoid outer supporting frame seat to rotate in a supporting frame ring, a convex arc tube is enabled to push and grind a sandstone strip block grinding cutter in a cavity chamber, a supporting rod in the trapezoid groove seat and a reinforcing rib fastening rod form a supporting frame, the cutter blocking track circular cutting plane surface processing of hexagonal nut processing is formed by the cutter feeding side cabin groove and the cutter blocking plate, the cutter feeding and the cutter retracting of the follow-up cutter form a hoisting tool magazine rack protection effect through the corrugated tool rest pad, the machine tool is enabled to perform polishing and cutter feeding cutting hardness rack protection operation on the cutter after the nut processing, and the processing precision and the anti-collision tool rest protection degree are improved.

The invention has the following advantages after operation:

application processing plate rail cabin groove cooperatees with a hopper groove, butt joint side cabin groove of cutting feed through ejection of compact hopper groove, form the compound exchange frame of cross frame capstan and the pad clamp ring of whetting a knife in the knife rest rim plate and protect the effect after, form the prefabricated effect of polishing before the knife rest goes out the sword through the cushion that whets a knife, promote sharp blade roughness and improve subsequent nut processingquality, guarantee the articulated stability of lathe knife rest and the autonomic effect of periodic grinding cutter, realize that the mobility maintenance degree of equipment promotes, and effectively protect inside spare part and wear-resistantly, promote the accuracy and the mass density of follow-up nut processing, let machine tool processing's dense sense of matter and intensity obtain stable holding operation.

Drawings

Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of the embodiments of the invention when taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of a nut processing machine according to the present invention.

FIG. 2 is a schematic diagram of a detailed side-sectional structure of the present invention for processing tray bay slots, cross-frame turntables, sharpening pad clamping rings, and corrugated sharpening pad.

FIG. 3 is a schematic side sectional view of the inner stay bar block of the present invention in working condition.

Fig. 4 is a schematic side view of the sectional structure of the sharpening block according to the present invention.

FIG. 5 is a schematic side sectional view of the ladder-shaped outer frame of the present invention in a working state.

FIG. 6 is a schematic side sectional view of the convex triangular pad according to the present invention.

Description of reference numerals: machine frame strip rear seat-1, cabin door plate-2, processing plate frame cabin groove-3, discharging hopper groove-4, transmission case-5, slag discharging chute-6, cross frame rotary disc-3A, sharpening pad clamping ring-3B, corrugated knife rest pad-3C, knife baffle-3D, feeding side cabin groove-3E, inner support folding strip block-3A 1, inner support rod-3A 2, double track strip rod-3A 3, axis wheel ring-3A 4, knife entering seam frame ring-3A 5, fan wheel seat-3A 11, torsional spring strip rod-3A 12, stay plate block-3A 13, frame covering fan plate seat-3A 14, sharpening pad block-3B 1, trapezoid outer frame seat-3B 2, binding frame ring-3B 3, convex arc spring tube-3B 11, inner cavity chamber-3B 12, stone strip-3B 13, Trapezoidal groove seat-3B 21, support rod-3B 22, reinforcing rib buckle rod-3B 23, convex arc triangular pad-3C 1, corrugated hanging plate-3C 2, angle groove rod-3C 11, three-fork inner pad frame-3C 12 and triangular arc pad-3C 13.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The first embodiment is as follows:

referring to fig. 1-6, the present invention provides a nut processing machine, which comprises: the machine frame strip rear seat 1, the cabin door plate 2, the processing disk rack cabin groove 3, the discharging hopper groove 4, the transmission case 5 and the slag discharging chute 6, wherein the cabin door plate 2 is mechanically connected with the processing disk rack cabin groove 3, the machine frame strip rear seat 1 is inserted and embedded at the rear side of the processing disk rack cabin groove 3, the processing disk rack cabin groove 3 is installed on the top of the transmission case 5, the discharging hopper groove 4 is inserted and embedded at the front side of the transmission case 5 and is communicated with each other, the slag discharging chute 6 is welded at the right side of the transmission case 5, the processing disk rack cabin groove 3 is provided with a cross-shaped frame rotary disk 3A, a grinding cushion clamping ring 3B, a corrugated tool rest cushion 3C, a cutter baffle plate 3D and a cutting side cabin groove 3E, the cross-shaped frame rotary disk 3A is installed inside the grinding tool cushion clamping ring 3B and is collinear, the cross-shaped frame rotary disk 3A is mechanically connected with the grinding cushion clamping ring 3B and is positioned on the same vertical surface, the cutter baffle plate 3D is provided with four cutter baffles and is respectively inserted and embedded at the left side and the right side of the cutting side cabin 3E, the cross-frame rotating disc 3A is installed inside the feed side cabin groove 3E and is located on the same vertical surface, the corrugated tool rest pad 3C is nested on the top of the feed side cabin groove 3E and is located on the same vertical surface, and the feed side cabin groove 3E is mechanically connected with the cabin door panel 2.

Referring to fig. 2, the cross-frame rotating plate 3A is composed of an inner supporting folding bar 3A1, an inner support bar 3A2, a double-track bar 3A3, an axial wheel ring 3A4, and a knife seam frame ring 3A5, the inner supporting folding bar block 3A1 is buckled with the inner support bar 3A2, the double-track bar 3A3 is inserted and embedded in the upper left corner of the inner supporting folding bar block 3A1, the double-track bar 3A3 is mechanically connected with the axle center wheel ring 3A4 and is positioned on the same vertical plane, the inner supporting folding bar block 3A1 and the knife seam entering frame ring 3A5 adopt interference fit, the knife pad clamping ring 3B consists of a knife pad 3B1, a trapezoidal outer frame seat 3B2 and a binding frame ring 3B3, the knife sharpening cushion block 3B1 and the trapezoidal outer frame seat 3B2 are in interference fit, the trapezoidal outer frame seat 3B2 and the bundling frame ring 3B3 are buckled together, the internal bracing folding strip block 3A1 and the trapezoidal outer frame seat 3B2 form a stay seam cutter knife for bracing and contracting, and the stay seam cutter knife is matched with a turning hexagonal nut to form integral processing stability and cutter frame protection operation.

Referring to fig. 3, the inner bracing folding bar block 3a1 is composed of a fan wheel seat 3a11, a torsion spring thread bar 3a12, a bracing plate 3a13, and a frame-wrapped fan plate seat 3a14, the fan wheel seat 3a11 and the frame-wrapped fan plate seat 3a14 are respectively installed on the left side and the bottom of the bracing plate 3a13, the torsion spring thread bar 3a12 is inserted and embedded in the bracing plate 3a13 and is located on the same inclined plane, the bracing plate 3a13 is a plate structure with a narrow arc bar in the middle of a right-angle bump on the left side and the bottom, so that the arc bracing of the slat forms a four-position wrapped inner ring surface outer-expanding bearing effect, and the torsion spring thread bar 3a12 is tensioned and drawn in the bracing plate 3a13 to form a bending-resistant curved surface outer bracing spring effect.

Referring to fig. 4, the knife sharpening cushion block 3B1 is composed of a convex arc spring tube 3B11, a petal slot inner chamber 3B12 and a frosted stone strip 3B13, the convex arc spring tube 3B11 is installed inside the petal slot inner chamber 3B12, the convex arc spring tube 3B11 is mechanically connected with the frosted stone strip 3B13 and is located on the same vertical plane, the frosted stone strip 3B13 is a stone structure at the bottom edge of a narrow band arc strip in the middle of a left wide band and a right wide band, toughness of a sharpening tool is facilitated through hardness of the frosted stone, machining accuracy and goodness of the nut are improved, the sanded stone strip 3B13 is flicked and pressed through the convex arc spring tube 3B11, and shock absorption effect during shaking of the sharpening tool is guaranteed.

Referring to fig. 5, the trapezoidal outer frame base 3B2 is composed of a trapezoidal slot base 3B21, a support rod 3B22 and a reinforcing rib fastening rod 3B23, the support rod 3B22 and the reinforcing rib fastening rod 3B23 are fastened together and located on the same vertical plane, two reinforcing rib fastening rods 3B23 are arranged and respectively inserted and embedded on the left side and the right side of the trapezoidal slot base 3B21, the trapezoidal slot base 3B21 is a trapezoidal slot structure with a narrow upper part and a wide lower part, and is of a left-right equilateral shape, so that the annular clamp is fastened and covered to form the peripheral tightening effect of the slot base, the pressing and attaching amount and the feed amount regulating and bundling operation of subsequent knife sharpening are ensured, and the support rod 3B22 and the reinforcing rib fastening rod 3B23 form a vertically-supported clamp base effect with a vertically supported and a left-right retracted structure, and is convenient for the knife feeding processing nut planing and cutting operation outside the settlement edge.

The working process is as follows: a worker inserts the cabin door plate 2 through the rack strip rear seat 1 and is in butt joint with the rear side of the machining disk rack cabin groove 3 to form a chain belt to lift a tool rest to feed a cutting machining nut, the discharge hopper groove 4 outputs a finished product nut, the material slag of metal chips is discharged through the slag discharge chute 6, the cutter discharging and the cutter grinding before the middle nut machining are subjected to pretreatment operation, the inner support folding strip 3A1 of the cross-shaped frame rotary disk 3A presses the inner support rod 3A2 and the double track strip rod 3A3 to rotate around the axis wheel ring 3A4 and externally support the cutter gap frame ring 3A5, the fan wheel seat 3A11 and the frame fan plate seat 3A14 are in butt joint with the end point of the stay plate 3A13 and are in socket joint with the torsion spring wire rod 3A12 to form integral inner inverted angle external support operation, the cushion block 3B1 of the cutter grinding pad clamping ring 3B is in joint with the trapezoid outer rack seat 3B2 to rotate in the binding frame ring 3B3, and the inner cavity of the sandstone arc tube 3B 73742, the support rod 3B22 and the reinforcing rib buckling rod 3B23 in the trapezoidal groove seat 3B21 form support bundling operation, the feed side cabin groove 3E and the cutter blocking plate 3D form cutter blocking track circular cutting plane surface machining of hexagonal nut machining, the feed and the retraction of subsequent cutters form a hanging cutter holder protection effect through the corrugated cutter holder pad 3C, the machine tool is enabled to perform grinding and feed cutting hardness holder protection operation on the cutters after the nuts are machined, and machining precision and anti-collision cutter holder protection degree are improved.

Example two:

referring to fig. 1 to 6, the present invention provides a nut processing machine, which is otherwise the same as embodiment 1 except that:

referring to fig. 2, the corrugated blade carrier pad 3C is composed of a convex triangular pad 3C1 and a corrugated hanging plate 3C2, the convex triangular pad 3C1 is provided with more than two convex triangular pads and is installed on the front side of the corrugated hanging plate 3C2, the convex triangular pad 3C1 and the corrugated hanging plate 3C2 are tightly attached together and are located on the same vertical plane, and the convex triangular pad 3C1 removes the effects of trimming and grinding the blade surfaces of the blade holders and the pad at a plurality of blade holder heights on the front side of the corrugated hanging plate 3C 2.

Please refer to fig. 6, the convex-arc triangular pad 3C1 is composed of a dog-ear slot bar 3C11, a three-prong inner pad frame 3C12, and a three-corner arc pad 3C13, the dog-ear slot bar 3C11 and the three-prong inner pad frame 3C12 are inserted and embedded into a whole and are located on the same vertical plane, the three-prong inner pad frame 3C12 is installed inside the three-corner arc pad 3C13, the three-prong inner pad frame 3C12 is a three-prong frame structure with long left and right and middle belt arc petals, so that left and right retracting three-prong bar frames form a pad protection frame knife effect of an outward-expanding tripod, and a vertex included angle internal pressure effect of left and right frame guards is formed by the dog-ear slot bar 3C11 and the three-prong inner pad frame 3C12, thereby improving the operation effect of the whole bearing node and the retracting surface.

Through the operation of grinding the lower cutter of the machine tool in the previous stage and then matching with the nut machining, the convex arc triangular pad 3C1 of the corrugated cutter frame pad 3C and the front side lifting cutter of the corrugated hanging plate 3C2 are pressed on the bevel groove rod 3C11 and the three-fork inner pad frame 3C12 during subsequent cutter collection, so that the triangular arc pad 3C13 obtains the effect of pressing and grinding the side pad bread, the operation of preventing the rack cutter from being buckled is facilitated, and the cutter collection stability of the positioning tool magazine is improved.

The invention achieves the aim of matching the processing plate rack cabin groove 3 with the discharging hopper groove 4 by mutually combining the parts, and achieves the aim of utilizing the processing plate rack cabin groove 3 and the discharging hopper groove 4 to be butted with the feeding side cabin groove 3E, forming the composite alternate support protection effect of the cross-shaped frame rotary disk 3A and the knife grinding pad clamping ring 3B in the knife rest wheel disc, forming the pre-manufacturing grinding effect before knife rest discharging through the knife grinding pad 3B1, improving the flatness of a sharp blade, improving the subsequent nut processing quality, ensuring the hinging stability of a machine tool knife rest and the autonomous effect of a periodic grinding tool, realizing the mobility maintenance degree of equipment to be improved, effectively protecting internal parts against abrasion, improving the accuracy and the quality density of the subsequent nut processing, ensuring the quality and the density of the machine tool processing to be stably and firmly held, and further solving the problem that the edge planing processing and the internal thread processing of the nut need to be penetrated through the chuck and the inner shaft support frame to form the double-station machine tool processing effect, and the easy long-time equipment in knife rest and the tool magazine of wearing and tearing of high strength processing of hardware, cause the uneven and crude tool bit influence internal rotation of throwing face of follow-up hardware and dig the quality of cutting, cause the phenomenon that the long-time short period repeatedly consumes labour regulation and control to whetting a knife volume and feed volume, lead to follow-up staff to obtain effective maintenance to the autonomy performance of lathe, continuously dismantle tool magazine and knife rest, cause the loss to the fastening degree of lathe, let the cutter loosen inconvenient processing of collapsing, produce the problem of hitting the sword phenomenon easily.

The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims appended hereto.

Claims

1. A nut machining tool structurally comprises: frame strip back seat (1), hatch door board (2), processing plate rail cabin groove (3), ejection of compact fill groove (4), transmission machine case (5), arrange sediment spout (6), its characterized in that:

the cabin door plate (2) is mechanically connected with the processing disc rack cabin groove (3), the frame strip rear seat (1) is inserted and embedded at the rear side of the processing disc rack cabin groove (3), the processing disc rack cabin groove (3) is installed on the top of the transmission case (5), the discharging hopper groove (4) is inserted and embedded at the front side of the transmission case (5), and the slag discharging chute (6) is welded at the right side of the transmission case (5);

the machining disc rack cabin groove (3) is provided with a cross-shaped frame rotary disc (3A), a sharpening pad clamping ring (3B), a corrugated tool rest pad (3C), a cutter blocking plate (3D) and a feeding side cabin groove (3E);

the cross-shaped frame rotating disc (3A) is arranged inside the sharpening pad clamping ring (3B), the cross-shaped frame rotating disc (3A) is mechanically connected with the sharpening pad clamping ring (3B), four knife blocking plates (3D) are arranged and are respectively inserted and embedded in the left side and the right side of the cutting feed side cabin groove (3E), the cross-shaped frame rotating disc (3A) is arranged inside the cutting feed side cabin groove (3E), the corrugated knife rest pad (3C) is embedded and embedded on the top of the cutting feed side cabin groove (3E), and the cutting feed side cabin groove (3E) is mechanically connected with the cabin door plate (2);

the cross-shaped frame rotary disc (3A) consists of an inner supporting folding bar block (3A 1), an inner support bar (3A 2), a double-track bar (3A 3), an axis wheel ring (3A 4) and a knife seam entering frame ring (3A 5), wherein the inner supporting folding bar block (3A 1) is buckled with the inner support bar (3A 2), the double-track bar (3A 3) is inserted and embedded in the upper left corner of the inner supporting folding bar block (3A 1), the double-track bar (3A 3) is mechanically connected with the axis wheel ring (3A 4), and the inner supporting folding bar block (3A 1) is matched with the knife seam entering frame ring (3A 5);

the inner stay folding strip block (3A 1) consists of a sash wheel seat (3A 11), a torsion spring wire strip rod (3A 12), a stay plate block (3A 13) and a frame-wrapping sash plate seat (3A 14), wherein the sash wheel seat (3A 11) and the frame-wrapping sash plate seat (3A 14) are respectively installed on the left side and the bottom of the stay plate block (3A 13), and the torsion spring wire strip rod (3A 12) is inserted and embedded in the stay plate block (3A 13);

the sharpening pad clamping ring (3B) consists of a sharpening pad (3B 1), a trapezoidal outer frame seat (3B 2) and a bundling frame ring (3B 3), the sharpening pad (3B 1) is matched with the trapezoidal outer frame seat (3B 2), and the trapezoidal outer frame seat (3B 2) is buckled with the bundling frame ring (3B 3);

the knife sharpening cushion block (3B 1) consists of a convex arc spring tube (3B 11), a petal slot inner chamber (3B 12) and a sand grinding bar block (3B 13), the convex arc spring tube (3B 11) is installed inside the petal slot inner chamber (3B 12), and the convex arc spring tube (3B 11) is mechanically connected with the sand grinding bar block (3B 13);

the trapezoidal outer frame seat (3B 2) is composed of a trapezoidal groove seat (3B 21), a support rod (3B 22) and a reinforcing rib buckling rod (3B 23), the support rod (3B 22) is buckled with the reinforcing rib buckling rod (3B 23), and two reinforcing rib buckling rods (3B 23) are arranged and are respectively inserted and embedded in the left side and the right side of the trapezoidal groove seat (3B 21);

the corrugated knife rest pad (3C) consists of more than two convex arc triangular pads (3C 1) and a corrugated hanging plate (3C 2), the convex arc triangular pads (3C 1) are arranged at the front side of the corrugated hanging plate (3C 2), and the convex arc triangular pads (3C 1) and the corrugated hanging plate (3C 2) are tightly attached together;

protruding arc triangle pad (3C 1) comprises dog-ear groove pole (3C 11), trigeminal inner pad frame (3C 12), triangle arc pad (3C 13), dog-ear groove pole (3C 11) and trigeminal inner pad frame (3C 12) insert and inlay an organic whole, trigeminal inner pad frame (3C 12) is installed in the inside of triangle arc pad (3C 13).