CN114985534A

CN114985534A - Piston ring preforming equipment of buckling

Info

Publication number: CN114985534A
Application number: CN202210622762.XA
Authority: CN
Inventors: 李栋; 李芳�; 李哲
Original assignee: Anhui Sato Precision Machinery Co ltd
Current assignee: Anhui Sato Precision Machinery Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-09-02

Abstract

The invention relates to the technical field of piston ring processing, in particular to a piston ring preforming bending device which comprises a vertical frame, wherein a fixed disc with a convex structure is fixedly arranged at the center of the front end face of the vertical frame; still through setting up two sets of locating parts, realize the sheetmetal and further inject, not only reduce the sheetmetal both ends and appear the condition of upwarping and skew when being supported to can confirm rapidly whether the length that the sheetmetal extends in both sides is equal, with the effect that further improves the sheetmetal and bend, utilize locking mechanism at last, it uses with the fixed disk cooperation, and the function of taking off easily after the clamp is tight and the shaping when realizing the sheetmetal and bending effectively improves work efficiency.

Description

Piston ring preforming equipment of buckling

Technical Field

The invention relates to the technical field of piston ring processing, in particular to a piston ring preforming and bending device.

Background

The piston rings are expandable open metal rings attached to the outer diameter of pistons in internal combustion or steam engines commonly used to provide a seal between the piston and the cylinder wall, and are manufactured by bending a metal sheet into a short cylinder with a circular cross-section, and then cutting and machining from the cylinder into several piston rings, which are important steps in the manufacturing process and directly affect the shape and quality of the piston rings;

when the metal sheet is bent, part of devices need to be manually supported and pushed to bend the metal sheet, the metal sheet is easy to deflect in the pushing mode, and the surface of the metal sheet after the metal sheet is bent for the first time is easy to be partially raised or folded at the bent part, so that the integral bending efficiency is reduced; and part sheetmetal hugs closely on fixing device surface after buckling the shaping, and the clearance is less between hollow post and the fixing device, and the finished product is difficult for taking off, easily reduces work efficiency.

Disclosure of Invention

The invention aims to provide a bending piece, which is convenient for rolling and forming the surface of a metal sheet for multiple times so as to improve the leveling and bending operation efficiency of the surface of the metal sheet; still through setting up two sets of locating parts, it sets up respectively in fixed disk both sides position, realize the sheetmetal further injects, not only reduce the sheetmetal both ends and appear raising and squint the condition when being supported, and whether can confirm the sheetmetal extension equally in the length of both sides fast, quick adjustment again, with the effect that further improves the sheetmetal and bend, utilize locking mechanism at last, it uses with the fixed disk cooperation, press from both sides when realizing the sheetmetal and bend and press from both sides the function of taking off easily after the shaping, effectively improve work efficiency.

The purpose of the invention can be realized by the following technical scheme:

a pre-forming and bending device for a piston ring comprises a vertical frame, wherein a fixed disc with a convex structure is fixedly installed at the center of the front end face of the vertical frame, the front end of the vertical frame is close to the outer ring of the fixed disc and is provided with a ring groove, one tenth of the bottom of the ring groove is in a notch shape, an inner groove with a rectangular structure is formed in the vertical frame, a bending piece is arranged in the inner groove, limiting pieces are arranged at the centers of two sides of the front end face of the vertical frame, and the two limiting pieces are in bilateral symmetry;

wherein, the bending piece comprises a limiting cylinder which is fixedly arranged at the center inside the inner groove, the limiting cylinder is internally connected with a rack in a sliding way, the bottom positions of the two side surfaces of the rack are fixedly provided with a slide block which is connected in a sliding way arranged on the inner wall of the two sides of the limiting cylinder, one half of the upper end of the rack penetrates through the limiting cylinder and is fixedly provided with a hydraulic push rod, the top of the hydraulic push rod penetrates through the vertical frame and is fixedly provided with a motor, the rack is two thirds of the length of the inner groove, the outer surfaces of the two sides of the rack are fixedly provided with a plurality of groups of teeth, the inner part of the inner groove, which is positioned at the two sides of the rack and is close to the upper end, is respectively provided with a first fluted disc and a second fluted disc, the two fluted discs are rotatably connected with the inner wall of the rear end of the inner groove through rotating shafts, the first fluted disc and the second fluted disc are respectively meshed with the teeth at the two sides of the rack for transmission, the first fluted disc and the front ends of the fluted disc are both fixedly provided with fixing pieces, and the stationary blade top is the curved surface setting and extends upwards, and is two sets of the top department of terminal surface all rotates before the stationary blade and is connected with the roller, and is two sets of the roller runs through to the annular inside near top left and right sides position respectively, and the roller surface equidistance has seted up the tooth's socket, the roller front end runs through annular and fixed mounting has the compression roller, compression roller surface equidistance fixed mounting has to support the piece, the length of compression roller and fixed disk is unanimous, and it runs through between the two has the sheetmetal, and the sheetmetal is located the coplanar with two sets of locating parts.

Furthermore, the annular groove is close to the fixed mounting of inner ring surface equidistance has the tooth piece, tooth piece and the outside tooth's socket meshing of roller.

Furthermore, the locating part includes the U-shaped frame, and the inside opening part of keeping away from of U-shaped frame rotates and is connected with to the pole, it rotates respectively to connect in the cross slot that the U-shaped frame front and back end was seted up to support the pole front and back end, the equipartition distance of inner wall has seted up the recess about the cross slot, and supports the pole joint between two upper and lower recesses, support the equal fixed mounting of pole upper and lower terminal surface has the baffle, and is two sets of the baffle runs through frame mouth about the U-shaped frame respectively.

Furthermore, a fixed rod is fixedly mounted inside the U-shaped frame, the end of the fixed rod, which is far away from the supporting rod, is close to the opening, limiting rings are respectively sleeved at the positions, close to the front end and the rear end, of the outer surface of the fixed rod, limit rings are hinged at the lower end of the fixed rod, pushing frames are hinged at the front end and the rear end of the baffle, the pushing frames are arranged upwards in an inclined manner, a rectangular elongated slot is formed in one end of each pushing frame, which is close to the fixed rod, the limiting rings are clamped inside the elongated slots and are close to the top ends, and a spring set is fixedly connected between each limiting ring and the inner wall of the other side of each elongated slot.

Further, the circular slot has been seted up to fixed disk inside center department, and the upper end of circular slot inside, left side below and right side below position have all seted up the spacing groove, every group spacing inslot portion fixed mounting at center has the drum, and drum internal surface equidistance fixed mounting has a plurality of groups card strip, the spacing groove is linked together with the circular slot is inside, and the circular slot is inside to be provided with locking mechanism.

Further, locking mechanism includes the bull stick, the bull stick rotates to be connected in circular slot inside center department, and the bull stick extends to circular slot front end department, the part fixed mounting that the bull stick is located circular slot inside has three hornblocks, three group's fixed points of three hornblocks all are the curved surface setting and correspond with three group's spacing grooves, and three hornblock surfaces set up three horn-shaped's activity groove, the activity inslot portion is located three group's summits punishment and does not have the hob, and the activity inslot portion is located hob right side position fixed mounting and has the kicking block, the hob top articulates there is the pole setting, the pole setting runs through in proper order to spacing groove and drum inside and extend to spacing groove upper end notch, and pole setting top fixed mounting has arc form roof, the roof is 4cm apart from the fixed disk surface.

Furthermore, a plurality of groups of straight grooves are formed in the middle end of the outer surface of the vertical rod, the clamping strips are clamped inside the straight grooves respectively, and the length of each straight groove is larger than 4cm of the length of each clamping strip.

Compared with the prior art, the invention has the beneficial effects that:

1. when the metal sheet pre-bending forming machine is used, the bending piece is arranged, the motor drives the hydraulic push rod to do up-and-down reciprocating motion, when the hydraulic push rod moves upwards, the rack moves upwards and is respectively meshed with the first fluted disc and the second fluted disc, the first fluted disc and the second fluted disc are forced to do circular revolving motion respectively, the first fluted disc rotates anticlockwise and the second fluted disc rotates clockwise, the fixing pieces at the front ends of the first fluted disc and the second fluted disc are respectively driven to drive the roller shaft to rotate along the left side and the right side inside the annular groove and reach the notch position of the bottom of the annular groove, the metal sheet is rolled into an annular shape by the compression roller and is attached to the outer part of the fixing disc, so that the metal sheet is pre-bent and formed, and when the sliding block slides to the opening of the limiting cylinder, the rack stops moving upwards; at the moment, the hydraulic push rod starts to push the rack to move downwards to force the first fluted disc and the second fluted disc to move in opposite directions, the first fluted disc rotates clockwise and the second fluted disc rotates anticlockwise, the first fluted disc and the second fluted disc respectively drive the compression roller to rotate to the top of the annular groove, and the surface of the bent metal sheet can be rolled again in the rotation process so as to improve the surface smoothness of the metal sheet, facilitate the bending of the subsequent metal sheet and improve the bending operation efficiency;

2. when the metal sheet bending device is used, two groups of limiting pieces are arranged and are respectively arranged at two sides of the fixed disc, the metal sheet penetrates between the compression roller and the fixed disc and is positioned on the same plane with the two groups of limiting pieces, the metal sheet is abutted against the left and right groups of baffle plates, one end of the metal sheet is warped when the metal sheet is bent to a certain degree, and when the two groups of baffle plates are in a vertical state, the metal sheet is accurately placed; if the baffle on one side deviates or inclines, the placing position of the metal sheet is mistakenly adjusted, so that the accuracy of the placing position of the metal sheet is ensured, the deviation is reduced, and the bending effect of the piston ring is improved in an auxiliary manner;

3. when the invention is used, the locking mechanism is arranged, when a metal sheet is placed between the top of the fixed disc and two groups of compression rollers, the rotating rod is rotated anticlockwise, three groups of vertexes of the three triangular blocks are respectively aligned with three groups of limiting grooves, the vertical rod and the three triangular blocks move relatively, when the roller shaft slides in the movable groove until the roller shaft slides to the vertexes of the three triangular blocks, the roller shaft cannot move continuously under the action of the propping force of the propping blocks and is beneficial to the vertex position, the vertexes are higher than the plane position, the vertical rod moves upwards under the propping of the vertexes, the vertical rod moves upwards to penetrate through the cylinder, the clamping strip slides to the bottom end position in the straight groove, the tops of the vertical rods prop upwards against the top plate and are far away from the surface of the fixed disc, at the moment, the three groups of top plates push upwards, the diameter of the inner supporting surface of the hollow cylinder is enlarged, the metal sheet placed at the top of the fixed disc is clamped, and the inner surface of the metal sheet is attached to the outer surface of the top plate when the hollow cylinder is bent, after the bending forming, the rotating rod can be rotated clockwise, the triangular block rotates along with the rotating rod, the vertex position of the triangular block and the limiting groove force the rolling rod to be separated from the top of the triangular block, the vertical rod position descends and drives the top plate to move downwards, the top plate is forced to be separated, namely, the formed piston ring loses conflict, the piston ring is conveniently and quickly taken down, and the working efficiency is further improved.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

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

FIG. 2 is a cross-sectional view of the mullion of the present invention;

FIG. 3 is a top cross-sectional view of the stile of the invention;

FIG. 4 is a cross-sectional view of a limiter according to the present invention;

FIG. 5 is a cross-sectional view of the combination of the holding pan and locking mechanism of the present invention;

FIG. 6 is a top cross-sectional view of the cylinder and pole assembly of the present invention;

fig. 7 is a perspective view of the triangular block of the present invention.

In the figure: 1. erecting a frame; 2. fixing the disc; 3. a ring groove; 31. a tooth block; 4. an inner tank; 5. bending a piece; 51. a limiting cylinder; 52. a rack; 53. a slider; 54. a hydraulic push rod; 55. a motor; 56. a first fluted disc; 57. a second fluted disc; 58. a fixing sheet; 59. a roll shaft; 510. a tooth socket; 511. a compression roller; 512. a resisting block; 6. a limiting member; 61. a U-shaped frame; 62. a support rod; 63. a transverse groove; 64. a groove; 65. a baffle plate; 66. fixing the rod; 67. a limiting ring; 68. pushing the frame; 69. a long groove; 610. a spring set; 7. a circular groove; 8. a limiting groove; 81. a cylinder; 82. clamping the strip; 9. a locking mechanism; 91. a rotating rod; 92. a triangular block; 93. a movable groove; 94. rolling a rod; 95. a top block; 96. erecting a rod; 97. a top plate; 98. a straight groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-7, a piston ring preforming bending apparatus includes a vertical frame 1, a fixed disk 2 with a convex structure is fixedly installed at the center of the front end face of the vertical frame 1, a ring groove 3 is formed at the front end of the vertical frame 1 close to the outer ring of the fixed disk 2, one tenth of the bottom of the ring groove 3 is in a notch shape, an inner groove 4 with a rectangular structure is formed in the vertical frame 1, a bending piece 5 is arranged in the inner groove 4, limiting pieces 6 are arranged at the centers of two sides of the front end face of the vertical frame 1, two sets of limiting pieces 6 are bilaterally symmetrical, a metal sheet is transversely clamped between the fixed disk 2 and the bending piece 5, the center of the metal sheet is aligned with the top center point of the fixed disk 2, two ends of the metal sheet are limited by the limiting pieces 6 and pressed to maintain the balance state of the metal sheet, and the bending process can be performed after the metal sheet is fixed;

wherein, the bending piece 5 comprises a limiting cylinder 51, the limiting cylinder 51 is fixedly arranged at the center inside the inner groove 4, a rack 52 is connected inside the limiting cylinder 51 in a sliding way, the bottom positions of two side surfaces of the rack 52 are both fixedly provided with a slide block 53, and the slide block 53 is connected in the slide grooves arranged on the inner walls of the two sides of the limiting cylinder 51 in a sliding way, one half of the upper end of the rack 52 penetrates through the limiting cylinder 51 and is fixedly provided with a hydraulic push rod 54, the top of the hydraulic push rod 54 penetrates through the upright frame 1 and is fixedly provided with a motor 55, the rack 52 is two thirds of the length of the inner groove 4, and a plurality of groups of teeth are fixedly arranged on the outer surfaces of the two sides of the rack 52, when the rack is bent, the motor 55 is started, the motor 55 drives the hydraulic push rod 54 to do up-and-down reciprocating motion, when the hydraulic push rod 54 moves upwards, the rack 52 is driven to slide upwards, and the slide block 53 moves upwards along the inside of the limiting cylinder 51, so that the rack 52 is kept to move linearly; the first gear disk 56 and the second gear disk 57 are respectively arranged at the two sides of the rack 52 and near the upper end inside the inner groove 4, and both are rotatably connected with the inner wall of the rear end of the inner groove 4 through a rotating shaft, the first fluted disc 56 and the second fluted disc 57 are respectively meshed with teeth on two sides of the rack 52 for transmission, the front ends of the first fluted disc 56 and the second fluted disc 57 are fixedly provided with fixing pieces 58, the tops of the fixing pieces 58 are arranged in a curved surface and extend upwards, the top ends of the front end surfaces of the two groups of fixing pieces 58 are respectively and rotatably connected with a roller shaft 59, the two groups of roller shafts 59 respectively penetrate through the annular groove 3 to positions close to the left side and the right side of the top ends, tooth grooves 510 are formed in the outer surface of the roller shaft 59 at equal intervals, the front end of the roller shaft 59 penetrates through the ring groove 3 and is fixedly provided with a pressing roller 511, the outer surface of the pressing roller 511 is fixedly provided with a resisting block 512 at equal intervals, the length of the pressing roller 511 is consistent with that of the fixed disc 2, a metal sheet penetrates between the two limiting pieces, and the metal sheet and the two limiting pieces 6 are positioned on the same plane; when the rack 52 moves upwards, the first fluted disc 56 and the second fluted disc 57 are forced to do circumferential transfer movement respectively, the first fluted disc 56 rotates anticlockwise, the fixing piece 58 at the front end drives the roller shaft 59 to rotate to the position of a notch at the bottom of the ring groove 3 along the left half inside the ring groove 3, the press roller 511 at the position rolls the left half part of the metal sheet into a semicircular shape and is attached to the outside of the fixed disc 2, the second fluted disc 57 rotates clockwise, the fixing piece 58 at the front end drives the roller shaft 59 to rotate along the right half inside the ring groove 3, and the press roller 511 at the position rolls the right half part of the metal sheet into a semicircular shape and is attached to the outside of the fixed disc 2, so that the integral pre-bending forming of the metal sheet is realized, and when the sliding block 53 slides to the opening of the limiting cylinder 51, the rack 52 stops moving upwards; at the moment, the hydraulic push rod 54 starts to push the rack 52 to move downwards, so that the first fluted disc 56 and the second fluted disc 57 are forced to move in opposite directions, at the moment, the first fluted disc 56 rotates clockwise, the second fluted disc 57 rotates anticlockwise, the first fluted disc 56 and the second fluted disc 57 respectively drive the press roller 511 to rotate to the top position of the ring groove 3, and in the rotation process, the surface of the bent metal sheet can be secondarily rolled again, so that the flatness of the surface of the bent metal sheet is improved, and the subsequent metal sheet can be conveniently bent;

in addition, tooth blocks 31 are fixedly arranged on the ring groove 3 close to the surface of the inner ring at equal intervals, and the tooth blocks 31 are meshed with tooth grooves 510 outside the roller shaft 59; when the roller shaft 59 slides in the ring groove 3, the tooth grooves 510 outside the roller shaft 59 are meshed with the tooth blocks 31 inside the ring groove 3, the roller shaft 59 is forced to rotate in the sliding process, the press roller 511 and the roller shaft 59 rotate together, the metal sheet is bent in a rotation pressing mode, and the plurality of groups of abutting blocks 512 can assist in abutting against the protrusions at the bent part of the metal sheet when rolling along with the roller shaft 59, so that the bending effect of the metal sheet is further improved.

Example two:

because the piston ring is an open metal ring, the bottom of the cylinder is open when the cylinder is bent, in order to further improve the bending degree of the metal sheet, before bending the incomplete cylinder, the center point of the metal sheet needs to be aligned with the center of the fixed disk 2, and the length of the metal sheet extending to the two sides of the fixed disk 2 is equal, so that the phenomenon that the bending effect of the cylinder is influenced by the deviation or the bending failure of part of the metal sheet is avoided, and therefore, the two ends of the metal sheet can be conveniently limited by two groups of limiting parts 6 before bending;

the limiting part 6 comprises a U-shaped frame 61, a resisting rod 62 is rotatably connected to the position, far away from the opening, in the U-shaped frame 61, the front end and the rear end of the resisting rod 62 are respectively rotatably connected to the inner parts of transverse grooves 63 formed in the front end and the rear end of the U-shaped frame 61, grooves 64 are formed in the upper inner wall and the lower inner wall of each transverse groove 63 at equal distances, the resisting rod 62 is clamped between the upper groove 64 and the lower groove 64, baffles 65 are fixedly arranged on the upper end face and the lower end face of the resisting rod 62, the two groups of baffles 65 respectively penetrate through the upper frame opening and the lower frame opening of the U-shaped frame 61, when metal sheets are transversely placed, the metal sheets are abutted against the left group of baffles 65 and the right group of baffles 65, and if the two groups of baffles 65 are in a vertical state, the metal sheets are accurately placed; if the baffle 65 on one side deviates or inclines, the position of the metal sheet is placed wrongly, so that the metal sheet can be quickly adjusted;

the positions of the two groups of baffles 65 can be adjusted according to the length of the metal sheet, the positions of the resisting rods 62 in the transverse groove 63 only need to be moved during adjustment, fixing rods 66 are fixedly installed at one ends, far away from the resisting rods 62, of the U-shaped frames 61 and close to the opening, the outer surfaces of the fixing rods 66 are respectively sleeved with a limiting ring 67 at positions close to the front end and the rear end, the front end and the rear end of the lower-end baffles 65 are respectively hinged with a pushing frame 68, the pushing frames 68 are obliquely and upwards arranged, long grooves 69 of a rectangular structure are formed in one ends, close to the fixing rods 66, of the pushing frames 68, the limiting rings 67 are clamped in the long grooves 69 and close to the top end, spring groups 610 are fixedly connected between the limiting rings 67 and the inner walls of the other sides of the long grooves 69, the resisting rods 62 are clamped in the upper and lower grooves 64, the pushing frames 68 are pushed upwards obliquely when the resisting rods 62 are displaced, the limiting rings 67 relatively move in the long grooves 69, and the spring groups 610 are compressed; when the metal sheet is positioned at a determined position, the press roller 511 makes a circular motion to downwards press the metal sheet, the lower end baffle plate 65 is pressed to move to one side and is inclined, the push frame 68 is forced to push towards the inclined upper side, the limiting ring 67 makes relative motion in the long groove 69 again, the spring group 610 compresses, when the metal sheet is completely separated from the baffle plate 65, the baffle plate 65 loses contact and resets under the resilience force of the spring group 610 and keeps vertical, so that the subsequent metal sheet is pressed, the structure is convenient for further limiting the metal sheet, the situations of warping and deviation when two ends of the metal sheet are pressed are reduced, whether the lengths of the metal sheet extending at two sides are equal or not can be quickly determined, and then quick adjustment is carried out, so that the bending effect of the metal sheet is further improved.

Example three:

the metal sheet is bent to be annular and then is tightly attached to the outer part of the fixed disc 2, so that the metal sheet is difficult to take out, if the metal sheet is forcibly taken down by an external tool, the surface of the metal sheet is easy to damage, and the time is consumed, therefore, when the metal sheet is bent, the locking mechanism 9 is matched with the fixed disc 2 for use, the functions of clamping the metal sheet during bending and easily taking down the hollow column during bending forming are realized, and the working efficiency is improved;

a circular groove 7 is formed in the center of the inner portion of the fixed disc 2, limiting grooves 8 are formed in the upper end, the left lower portion and the right lower portion of the inner portion of the circular groove 7, a cylinder 81 is fixedly installed in the center of the inner portion of each limiting groove 8, a plurality of groups of clamping strips 82 are fixedly installed on the inner surface of the cylinder 81 at equal intervals, the limiting grooves 8 are communicated with the inner portion of the circular groove 7, and a locking mechanism 9 is arranged in the circular groove 7; the locking mechanism 9 comprises a rotating rod 91, the rotating rod 91 is rotatably connected to the center inside the circular groove 7, the rotating rod 91 extends to the front end of the circular groove 7, a triangular block 92 is fixedly installed on the part, located inside the circular groove 7, of the rotating rod 91, three groups of fixed points of the triangular block 92 are arranged in a curved surface mode and correspond to the three groups of limiting grooves 8, triangular movable grooves 93 are formed in the outer surfaces of the triangular block 92, rolling rods 94 are respectively connected to the three groups of vertexes inside the movable grooves 93 in a sliding mode, a top block 95 is fixedly installed on the right side of the rolling rods 94 inside the movable grooves 93, vertical rods 96 are hinged to the tops of the rolling rods 94, the vertical rods 96 sequentially penetrate through the limiting grooves 8 and the cylinder 81 and extend to notches in the upper ends of the limiting grooves 8, arc-shaped top plates 97 are fixedly installed on the tops of the vertical rods 96, and the top plates 97 are 4cm away from the surface of the fixed disc 2; the middle end position of the outer surface of the upright post 96 is provided with a plurality of groups of straight grooves 98, the clamping strips 82 are respectively clamped in the straight grooves 98, the length of the straight grooves 98 is more than 4cm of the length of the clamping strips 82, when a metal sheet is placed between the top of the fixed disc 2 and two groups of compression rollers 511, the rotating rod 91 is rotated anticlockwise, three groups of vertexes of the triangular block 92 are respectively aligned with three groups of limiting grooves 8, the upright post 96 and the triangular block 92 move relatively, the roller 94 cannot move continuously under the action of the propping force of the top block 95 when sliding in the movable groove 93 until the roller slides to the vertex of the triangular block 92, the position of the vertex is favorable for being higher than the position of the plane, the upright post 96 moves upwards under the propping of the vertex, the upright post 96 moves upwards through the cylinder 81, the clamping strips 82 slide to the bottom end position in the straight grooves 98, the top of the upright post 96 props against the top plate 97 upwards and is far away from the surface of the fixed disc 2, at the moment, the three groups of the top plates 97 prop upwards, not only give the diameter of the interior holding surface of hollow post and enlarge, and press from both sides the sheetmetal of placing at fixed disk 2 top, during buckling, sheetmetal internal surface and roof 97 surface laminating, after the shaping of buckling, can rotate bull stick 91 clockwise, triangle block 92 rotates thereupon, triangle block 92 summit position and spacing groove 8 and force rolling rod 94 to break away from triangle block 92 top, pole setting 96 position descends and drives roof 97 and move down, force roof 97 separation, fashioned piston ring loses the conflict promptly, take off hollow cylinder ring with this easily, will cut again and be a plurality of piston rings of group, further improve work efficiency.

The working process and principle of the invention are as follows:

when the metal sheet bending device is used, firstly, a metal sheet is transversely clamped between the fixed disc 2 and the bending piece 5, the center of the metal sheet is aligned with the center point of the top of the fixed disc 2, two ends of the metal sheet are limited and pressed by the limiting piece 6 and keep the balance state of the metal sheet, and when the metal sheet is pressed against the left and right groups of baffles 65, if the two groups of baffles 65 are in a vertical state, the metal sheet is accurately placed; if the side baffle 65 deviates or inclines, the metal sheet placing position is wrong, and therefore rapid adjustment is carried out; the positions of the two groups of baffles 65 can be adjusted according to the length of the metal sheet, the positions of the resisting rods 62 in the transverse grooves 63 only need to be moved during adjustment, the resisting rods 62 are clamped in the upper and lower grooves 64, when the resisting rods 62 are displaced, the pushing frames 68 are pushed towards the oblique upper direction, the limiting rings 67 move relatively in the long grooves 69, and the spring groups 610 are compressed; when the metal sheet is positioned at a determined position, the press roller 511 makes a circular motion to downwards press the metal sheet, the baffle plate 65 at the lower end is pressed to move to one side and is in an inclined shape, the push frame 68 is forced to push towards the inclined upper side, the limiting ring 67 relatively moves in the long groove 69 again, the spring group 610 is compressed, when the metal sheet is completely separated from the baffle plate 65, the baffle plate 65 loses the contact and is reset under the resilience force of the spring group 610 and keeps in a vertical shape, so that the metal sheet is pressed subsequently;

the bending process can be carried out after the metal sheets are fixed, when in bending, firstly, the motor 55 is started, the motor 55 drives the hydraulic push rod 54 to do up-and-down reciprocating motion, when the hydraulic push rod 54 moves upwards, the hydraulic push rod drives the rack 52 to slide upwards, the slide block 53 moves upwards along the inside of the limiting cylinder 51 so as to keep the rack 52 to do linear motion, when the rack 52 moves upwards, the rack is respectively meshed with the first fluted disc 56 and the second fluted disc 57, the first fluted disc 56 and the second fluted disc 57 are respectively forced to do circumferential motion, the first fluted disc 56 rotates anticlockwise, the fixing piece 58 at the front end drives the roller shaft 59 to rotate along the left half inside the ring groove 3 to the notch position at the bottom of the ring groove 3, the compression roller 511 at the position rolls the left half part of the metal sheets into a semicircular shape and is attached to the outside of the fixed disc 2, the second fluted disc 57 rotates clockwise, the fixing piece 58 at the front end drives the roller shaft 59 to rotate along the right half inside the ring groove 3, the right half part of the compression roller 511 at the position rolls the metal sheets into a semicircular shape and is attached to the outside of the fixed disc 2, therefore, the integral pre-bending forming of the metal sheet is realized, and the rack 52 stops moving upwards when the sliding block 53 slides to the opening of the limiting cylinder 51; at the moment, the hydraulic push rod 54 starts to push the rack 52 to move downwards, so that the first fluted disc 56 and the second fluted disc 57 are forced to move in opposite directions, at the moment, the first fluted disc 56 rotates clockwise, the second fluted disc 57 rotates anticlockwise, the first fluted disc 56 and the second fluted disc 57 respectively drive the press roller 511 to rotate to the top position of the ring groove 3, and in the rotation process, the surface of the bent metal sheet can be secondarily rolled again, so that the flatness of the surface of the bent metal sheet is improved, and the subsequent metal sheet can be conveniently bent;

the metal sheet is bent to be annularly and tightly attached to the outside of the fixed disc 2 and is difficult to take out, therefore, when the metal sheet is placed between the top of the fixed disc 2 and the two groups of compression rollers 511, the rotating rod 91 is rotated anticlockwise, three groups of vertexes of the triangular block 92 are respectively aligned with the three groups of limiting grooves 8, the vertical rod 96 and the triangular block 92 move relatively, the rolling rod 94 slides in the movable groove 93 until the rolling rod slides to the vertex of the triangular block 92, the rolling rod 94 cannot move continuously under the action of the propping block 95 and is beneficial to the vertex position, the vertex position is higher than the plane position, the vertical rod 96 is propped by the vertex and moves upwards, the vertical rod 96 moves upwards to penetrate through the cylinder 81, the clamping strip 82 slides to the bottom end position in the straight groove 98, the top of the vertical rod 96 props against the top plate 97 upwards and is far away from the surface of the fixed disc 2, at the moment, the three groups of top plates 97 prop upwards, not only give the diameter of hollow post internal support face to enlarge, and press from both sides the sheetmetal of placing at fixed disk 2 top tightly, during buckling, the sheetmetal internal surface laminates with roof 97 surface, after the shaping of buckling, but clockwise rotation bull stick 91, three hornblocks 92 rotate thereupon, three hornblocks 92 summit position and spacing groove 8 and force hob 94 to break away from three hornblocks 92 tops, pole setting 96 position descends and drives roof 97 and move down, force roof 97 separation, fashioned piston ring loses conflict promptly, take off hollow cylinder ring with this easily, will cut again and be a plurality of piston rings of group, further improve work efficiency.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a piston ring preforming equipment of buckling, includes grudging post (1), its characterized in that: the fixing plate (2) with a convex structure is fixedly installed at the center of the front end face of the upright frame (1), the front end of the upright frame (1) is close to the outer ring of the fixing plate (2) and is provided with an annular groove (3), one tenth of the bottom of the annular groove (3) is in a notch shape, an inner groove (4) with a rectangular structure is formed in the upright frame (1), a bending piece (5) is arranged in the inner groove (4), the front end face of the upright frame (1) is provided with limiting pieces (6) at the centers of two sides, and the two groups of limiting pieces (6) are in bilateral symmetry;

wherein the bending piece (5) comprises a limiting cylinder (51), the limiting cylinder (51) is fixedly installed at the center of the inner part of the inner groove (4), a rack (52) is connected to the inner part of the limiting cylinder (51) in a sliding manner, sliders (53) are fixedly installed at the bottom positions of the two side surfaces of the rack (52), the sliders (53) are connected to sliding grooves formed in the inner walls of the two sides of the limiting cylinder (51) in a sliding manner, one half of the upper end of the rack (52) penetrates through the limiting cylinder (51) and is fixedly provided with a hydraulic push rod (54), the top of the hydraulic push rod (54) penetrates through the upright frame (1) and is fixedly provided with a motor (55), the rack (52) is two thirds of the length of the inner groove (4), a plurality of groups of teeth are fixedly installed on the outer surfaces of the two sides of the rack (52), a first tooth disc (56) and a second tooth disc (57) are respectively arranged at positions, close to the upper ends, which are positioned on the two sides of the rack (52), in the inner part of the inner groove (4), and the two are rotatably connected with the inner wall of the rear end of the inner groove (4) through a rotating shaft, the first fluted disc (56) and the second fluted disc (57) are respectively in tooth meshing transmission with the two sides of the rack (52), the front ends of the first fluted disc (56) and the second fluted disc (57) are fixedly provided with fixing sheets (58), the tops of the fixing sheets (58) are arranged in a curved surface manner and extend upwards, the top ends of the front end surfaces of the two fixing sheets (58) are respectively and rotatably connected with roll shafts (59), the two roll shafts (59) respectively penetrate through the inside of the annular groove (3) and are close to the left side and the right side of the top end, tooth grooves (510) are formed in the outer surface of the roll shafts (59) at equal intervals, the front ends of the roll shafts (59) penetrate through the annular groove (3) and are fixedly provided with press rolls (511), abutting blocks (512) are fixedly arranged in the outer surface of the press rolls (511) at equal intervals, and the length of the press rolls (511) is consistent with that of the fixing disc (2), and a metal sheet penetrates between the two, and the metal sheet and the two groups of limiting pieces (6) are positioned on the same plane.

2. Piston ring preforming bending device according to claim 1, characterised in that the ring groove (3) is fixedly provided with tooth blocks (31) with equal distance next to the inner ring surface, the tooth blocks (31) engaging with tooth grooves (510) outside the roll shaft (59).

3. The piston ring preforming bending device according to claim 1, wherein the limiting member (6) comprises a U-shaped frame (61), a resisting rod (62) is rotatably connected to an opening of the inside of the U-shaped frame (61), the front end and the rear end of the resisting rod (62) are respectively rotatably connected to the inside of a transverse groove (63) formed in the front end and the rear end of the U-shaped frame (61), grooves (64) are formed in the upper inner wall and the lower inner wall of the transverse groove (63) at equal distances, the resisting rod (62) is clamped between the upper groove and the lower groove (64), baffles (65) are fixedly mounted on the upper end surface and the lower end surface of the resisting rod (62), and two groups of the baffles (65) respectively penetrate through the upper frame opening and the lower frame opening of the U-shaped frame (61).

4. The piston ring preforming and bending device according to claim 3, wherein a fixing rod (66) is fixedly installed at one end of the U-shaped frame (61) far away from the abutting rod (62) and close to the opening, limiting rings (67) are sleeved at positions, close to the front and rear ends, of the outer surface of the fixing rod (66), pushing frames (68) are hinged at the front and rear ends of the baffle (65) at the lower end, the pushing frames (68) are arranged upwards in an inclined manner, a rectangular long groove (69) is formed at one end of each pushing frame close to the fixing rod (66), the limiting rings (67) are clamped at positions, close to the top ends, in the long groove (69), and a spring group (610) is fixedly connected between the limiting rings (67) and the inner wall of the other side of the long groove (69).

5. The piston ring preforming bending device according to claim 1, wherein a circular groove (7) is formed in the center of the inside of the fixed disc (2), limiting grooves (8) are formed in the upper end, the lower left portion and the lower right portion of the inside of the circular groove (7), a cylinder (81) is fixedly installed in the center of the inside of each limiting groove (8), a plurality of clamping strips (82) are fixedly installed on the inner surface of the cylinder (81) at equal intervals, the limiting grooves (8) are communicated with the inside of the circular groove (7), and a locking mechanism (9) is arranged inside the circular groove (7).

6. A piston ring preforming bending device according to claim 5, wherein the locking mechanism (9) comprises a rotating rod (91), the rotating rod (91) is rotatably connected to the center of the inside of the circular groove (7), the rotating rod (91) extends to the front end of the circular groove (7), the part of the rotating rod (91) located inside the circular groove (7) is fixedly provided with a triangular block (92), three fixed points of the triangular block (92) are both curved surfaces and correspond to three sets of limiting grooves (8), the outer surface of the triangular block (92) is provided with a triangular movable groove (93), the movable groove (93) is internally located at three sets of vertexes and is respectively slidably connected with a rolling rod (94), a top block (95) is fixedly arranged at the right side of the rolling rod (94), the top of the rolling rod (94) is hinged with a vertical rod (96), and the vertical rod (96) sequentially penetrates through the limiting groove (8) and the inside of the cylinder (81) and extends to the limiting groove (8) 8) The upper end notch, and pole setting (96) top fixed mounting have arc form roof (97), roof (97) and fixed disk (2) surface are apart from 3cm-5 cm.

7. The piston ring preforming and bending device according to claim 6, wherein the middle end of the outer surface of the vertical rod (96) is provided with a plurality of groups of straight grooves (98), the clamping strips (82) are clamped in the straight grooves (98) respectively, and the length of the straight grooves (98) is greater than 3cm-5cm of the length of the clamping strips (82).