CN209439312U - Polygon bending machine material pressing mould length combination mechanism - Google Patents

Abstract

A kind of polygon bending machine material pressing mould length combination mechanism, it includes slide plate and linear guide, linear guide is equipped with the sliding block to match therewith, sliding block is fixedly connected with slide carriage, and square bar fixing seat is mounted on the left side of slide carriage, and square bar fixing seat is equipped with a square through hole, square through hole and fixed square bar outer rim match, fixed square bar is hollow structure, and spring bearing is arranged in fixed square bar inner cavity, is equipped with tooth form on a seamed edge of the outer rim of fixed square bar；Further include a rotation square bar, rotate the inner ring tight fit of the cylindrical segment of square bar with the spring bearing being arranged in fixed square bar, the end for rotating square bar is fixedly connected limited block, can pivot in fixed square bar inner hole.First gear support base, rack gear guide pad and second gear support base and interior setting spring bearing are installed side by side on the right side of slide carriage, the inner hole of spring bearing and the both ends boss outer circle of rotation gear are fitted close, it rotates gear centre and is equipped with square hole, and be slidably matched with the outer four directions of rotation square bar.

Description

Polygon bending machine material pressing mould length combination mechanism

Technical field

This application involves a kind of polygon bending machine more particularly to a kind of polygon bending machine material pressing mould length combination mechanisms.

Background technique

Folding brake is widely used in the bending forming of sheet metal, does not need particular manufacturing craft, has very than traditional bending machine More advantages.With the raising of cost of labor, the flexibility requirement of folding brake is higher and higher, especially the length combination of material pressing mould Also adjust automatically is required.When especially folding has the cell type part of in-flanges, material pressing mould must be able to the function of avoiding in-flanges automatically. Chinese invention patent specification CN 105945156 discloses a kind of folding brake plate compact mold automatic regulating apparatus, such as schemes 11, shown in Figure 12.It include mainly that two sets of standard module adjustment mechanisms and blade inserting die adjustment machine are arranged symmetrically along central symmetry Structure, center arrangement avoid mold mechanism.Standard module adjustment mechanism action process is that decelerating motor II passes through rack pinion, The movement of the slider bar above standard module is arranged in rack drives, and slider bar is equipped with notch, is provided with cylinder, gas in standard module Cylinder rod stretches out the notch for being caught in slider bar, and slider bar pulls standard module to move left and right along die holder.Blade inserting die adjusting mechanism (such as Figure 11) includes motor and the screw rod with its direct connection, and screw rod and screw match, and be fixedly connected gusset piece I, gusset piece I on screw There is hole at center, is slidably matched with limited block, and limited block is fixed on bracket, there is slot, gusset piece II and bolt below gusset piece I Axis is fixedly connected, and the slot of gusset piece II and gusset piece I, which slide, to match, and bolt axle can be moved left and right by coupling block guiding.Inserted sheet mould On be provided with through-hole, with chosen axis slide match, motor driven lead screw rotation, screw drive gusset piece I, gusset piece II, bolt Axis is moved left and right along limited block, and bolt axle penetrates inserted sheet mould, to choose inserted sheet mould；Decelerating motor I and rotary shaft are direct-connected, rotation Be fixedly connected above-mentioned coupling block on axis.The rotation center hold of rotary shaft and inserted sheet mould matches, and decelerating motor I drives rotary shaft to turn Dynamic, rotary shaft drives coupling block and bolt axle and the inserted sheet mould penetrated by bolt axle to rotate along rotary shaft, completes to inserted sheet mould It chooses and rotates.Mold mechanism is avoided to be arranged between two groups of inserted sheet die adjusting mechanisms, including in set oil cylinder and be connected in Set and set telescopic mould in cylinder piston rod, in set left telescopic mould and left hydraulic cylinder be set on the left of oil cylinder, in set on the right side of oil cylinder Right telescopic mould and right hydraulic cylinder are set, in set cylinder piston rod pull in set telescopic mould be moved to it is upper, left hydraulic cylinder and Right hydraulic cylinder respectively drives left telescopic oil cylinder and right telescopic oil cylinder is drawn close to center, realizes for there is the folding cell type part of in-flanges Evacuation.

The deficiency of said mechanism is that wherein standard module adjustment mechanism is driven by servo motor gear tooth item, machining accuracy And it requires high；Structure is complicated for standard module, and manufacturing cost is high.Blade inserting die adjusting mechanism two sides are arranged symmetrically, symmetrical to choose, Cause mechanism complicated, manufacturing cost is high.The oil cylinder quantity for avoiding mold mechanism is more, and pipeline connection is difficult, is easy oil leak.

Utility model content

For above structure defect and use demand, the purpose of this utility model is to provide one kind being capable of automatic Mosaic pressure Tight die length has the presser feet length combination mechanism of evacuation cell type part internal buckle edge function.

A kind of polygon bending machine material pressing mould length combination mechanism, it includes slide plate, and linear guide, straight line are installed on slide plate Guide rail is equipped with the sliding block to match therewith, and sliding block is fixedly connected with slide carriage, it is characterized in that square bar fixing seat is mounted on a left side for slide carriage Side, square bar fixing seat are equipped with a square through hole, and square through hole and fixed square bar outer rim match, and fixed square bar is hollow structure, Spring bearing is set in fixed square bar inner cavity, is equipped with tooth form on a seamed edge of the outer rim of fixed square bar；It further include a rotation side Bar, rotation square bar include two sections, and left section is cylinder, and right section is four prism type, and the cylindrical segment for rotating square bar and setting are solid The inner ring tight fit for determining the spring bearing in square bar, the end for rotating square bar are fixedly connected limited block, and rotation square bar is limited block The shaft shoulder and the shaft shoulder of itself limit axial movement, can be pivoted in fixed square bar inner hole.Is installed side by side on the right side of slide carriage One gear support base, rack gear guide pad and second gear support base；Setting in first gear support base and second gear support base Spring bearing, the inner hole of spring bearing and the both ends boss outer circle of rotation gear are fitted close, and rotation gear centre is equipped with four directions Hole, and be slidably matched with the outer four directions of rotation square bar.The square hole of right section for rotating square bar and turnover side rotating blade matches, The outer four directions of fixed square bar and the square hole of affixed side rotating blade match, and fixed square bar is fixedly installed in square bar fixing seat and drives Motivation structure is provided with rotation square bar driving mechanism on slide carriage.

The specific feature of this programme is in addition, fixed square bar driving mechanism includes the fixed setting level shifting in square bar fixing seat Dynamic motor cabinet moves horizontally motor cabinet and is fixedly connected horizontal drive speed reducer, and horizontal drive speed reducer and horizontal drive motor are defeated Shaft direct connection is fixed with horizontal drive gear, horizontal drive gear and fixed square tube outer rim in the shaft of horizontal drive speed reducer Tooth form on one seamed edge is meshed, and the fixed square bar of horizontal drive motor driven horizontal drive gear drive is along square bar fixing seat Square hole moves horizontally.

Rotation square bar driving mechanism includes that the position directly above on slide carriage positioned at rack gear guide pad is fixedly installed driving Cylinder mounting plate, overturning driving cylinder are fixedly connected with driving cylinder mounting plate, and the rod end and rack gear for overturning driving cylinder are fixedly connected, rack gear With rotation gear engaged transmission.Overturn driving cylinder push rack-driving rotary teeth wheel rotation, rotation gear drive rotation square bar and The rotation of turnover side rotating blade, when turnover side rotating blade turns to fixed side to overturn blade position, overturning blade hangs over fixation It is connected in edge on the blade bearing on slide carriage, the outer four directions for rotating square bar at this time is overlapped with the outer four directions four sides of fixed square bar, horizontal The fixed square bar of driving motor driving horizontal drive gear drive moves horizontally, when fixed square bar penetrates rotating side-turning rotor piece inner hole When, rotating side-turning rotor piece is converted into fixed side to overturn blade.

It is additionally provided with the guide holder being fixedly connected with slide plate, the guide holder bottom is equipped with groove between two parties, in guide holder Left and right is provided with boss on two sides；Cylinder mounting plate, fixed push-and-pull on cylinder mounting plate are fixed in guide holder both ends respectively Cylinder, cylinder rod and the tooth form item of push-and-pull cylinder are fixedly connected, and tooth form item is set in the lower grooves of guide holder and groove phase Cooperation.

The beneficial effects of the utility model are: the selection of the rotating blade of the utility model and rotational structure it is novel, it is compact, Reliably.The fixation of rotating blade is realized in the square hole of the rotating blade and positioning square bar cooperation, real with rotation square bar cooperation The rotary drive of existing rotating blade.Tooth form is processed on positioning square bar, gear, transmission positioning are coupled by servomotor, gear reducer Fixed rotating blade is chosen in the axial movement of square bar.One servo motor realizes the selection of rotating blade.Rotating blade Rotation pushes rack gear by oil cylinder or cylinder, and transmission gear rotates, and square hole and rotation square bar match in gear, and gear, which drives, to be rotated Square bar rotation, to realize the rotation of rotating blade.Rack pinion mode is reliable, simply.The rotating blade of selection passes through Servo motor couples gear driving rack, and the rack structure of rack gear engagement idle gear opposite with idle gear drive realizes cloth placed in the middle It sets.One servo motor realizes the alignment function of rotating blade.The back-and-forth motion material pressing mould and intermediate pressure of the utility model Expect that the evacuation of cell type part in-flanges is realized in the relative motion of mold.Realize that folding brake can roll over the cell type part function of in-flanges.Standard The movement of material pressing mould is changed to be pushed by cylinder, and control is simple, at low cost.The positioning of rotating blade utilizes ramp formation It realizes accurate rotational positioning, and can realize that bending pressure is born in rotating blade side.It is realized using the pressure of oil cylinder or cylinder The locking of rotating blade eliminates complicated locking device.In conclusion the utility model can realize that folding brake rolls over cell type Part and the bending for having in-flanges can arrange the plate material pressing mould of different length, the utility model structure in match-place centering automatically Compact, at low cost, control is simply.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.Fig. 2 is the left view of Fig. 1.Fig. 3 is I ministerial standard swaging die in Fig. 1 Has selecting structure schematic diagram.Fig. 4 is flexible material pressing mould structural schematic diagram.Fig. 5 is that rotating blade is chosen, rotary drive mechanism shows It is intended to.Fig. 6 is the left view of Fig. 5.Fig. 7 is the B-B view of Fig. 5.Fig. 8 is rotating blade driving mechanism schematic diagram placed in the middle.Fig. 9 is The C-C view of Fig. 8.Figure 10 is the structural schematic diagram of rotating blade.Figure 11 is prior art schematic diagram.Figure 12 is existing skill The inserted sheet of art scheme chooses rotating mechanism schematic diagram.

In figure: 101- slide plate；1- guide holder；2- cylinder mounting plate；3- push-and-pull cylinder；4- tooth form item；The left standard binder of 5- Mold；6- chooses piston；7- reset spring；8- gland；The right standard material pressing mould of 9-；The left side 10- is stretched material pressing mould；The left side 11- is right Middle material pressing mould；12-T type guide rail；The flexible driving cylinder of 13-；14- moves left material pressing mould；15- gusset piece；The flexible pressure in the right side 16- Expect mold；The right centering material pressing mould of 17-；18- moves right material pressing mould；19- linear guide；20- sliding block；21- slide carriage；22- is solid Determine square bar seat；23- fixes square bar；24- rotates square bar；25- spring bearing；26- limited block；27- first gear support base；28- Second gear support base；29- rack gear guide pad；30- rack gear；31- rotates gear；32- moves horizontally motor cabinet；33- level is driven Dynamic motor；34- horizontal drive speed reducer；35- horizontal drive gear；36- overturns driving cylinder；37- driving cylinder mounting plate；38- knife Bar；39- centering driving motor；40- centering drives speed reducer；41- centering motor cabinet；42- centering drives gear；43- centering Upper rack；44- centering idle gear；Rack gear under 45- centering；46- upper rack limited block；47- square hole；48- ramp formation；401- Affixed side rotating blade；402- turnover side rotating blade；501- cell type part；

51- decelerating motor II；52- motor；53- decelerating motor I；54- standard module；55- inserted sheet mould；It is set in 56- flexible Mold；57- gusset piece I；58- screw；59- screw rod；60- limited block；61- gusset piece II；62- bolt axle；63- rotary shaft；64- Coupling block；65- bracket.

Specific embodiment

As shown in Figure 1, Figure 2, a kind of polygon bending machine material pressing mould length combination mechanism.It includes slide plate 101 and consolidates with slide plate Surely the guide holder 1 coupled, 1 bottom of guide holder are equipped with groove between two parties, are provided on the side of the left and right of guide holder 1 two Boss (such as Fig. 9)；Such as Fig. 1, Fig. 3, cylinder mounting plate 2, fixed push-and-pull gas on cylinder mounting plate 2 are fixed in 1 both ends of guide holder respectively Cylinder 3, cylinder rod and the tooth form item 4 of push-and-pull cylinder 3 are fixedly connected, and tooth form item 4 is set in the lower grooves of guide holder 1 and groove It matches；Such as Fig. 2, Fig. 3, left standard material pressing mould 5 is equipped with T-slot and matches with the boss on guide holder 1, hangs over guide holder On 1 boss；The side of the presser feet of left standard material pressing mould 5 extends to the left, and the other side is vertical, and top is equipped with a hole, in hole Piston 6 is chosen in setting, chooses the rod end setting reset spring 7 of piston, gland 8, gland 8 and left side is arranged above reset spring 7 Standard material pressing mould is fixedly connected, and the inner hole of gland 8 and the bar diameter for choosing piston 6 match；When needing to choose the standard swaging die When tool, pressed gas is led to below rotary-piston 6, pressed gas pushes selection piston 6 to move up, and the rod end of rotary-piston 6 can It is inserted into the tooth socket of tooth form item 4, when push-and-pull cylinder 3 drives tooth form item 4 mobile at this time, left standard material pressing mould 5 can be driven to move Dynamic, when stopping being passed through pressed gas, reset spring 7 pushes selection piston 6 to return to lower section, and the movement of tooth form item 4 will not influence The standard material pressing mould；The construction shape and left standard material pressing mould 5 of right standard material pressing mould 9 are symmetrical, the movement of selection It is identical as standard material pressing mould 5 with principle, it is not repeated.Multiple groups standard material pressing mould, standard pressure are equipped in the two sides of guide holder 1 It is designed in material mold and chooses piston 6, reset spring 7 and gland 8.

Such as Fig. 1, on the right side of the left standard material pressing mould near middle position, arrangement moves left material pressing mould 14, left It is again provided in mobile material pressing mould 14 and chooses piston 6, reset spring 7 and gland 8, structure construction and left standard material pressing mould It is similar.The left flexible material pressing mould 10 of the right side arrangement of the mobile material pressing mould 14 in left side, the right side arrangement of the flexible material pressing mould 10 in a left side There are T-slot in left centering material pressing mould 11, left 11 left side of centering material pressing mould.The fixed connection in right side of the flexible material pressing mould 10 in a left side Connect T-type guide rail 12, the T-slot matching of T-type guide rail 12 and left centering material pressing mould 11.Such as Fig. 4, the interior setting of centering material pressing mould 11 Flexible driving cylinder 13, the rod end of flexible driving cylinder 13 are fixedly connected plate 15, gusset piece 15 and left 10 phase of material pressing mould of stretching Connection, flexible driving cylinder 13 push left flexible material pressing mould 10, for guiding, to be moved forward and backward with T-type guide rail 12.Similarly, near The left side arrangement of the right standard material pressing mould in middle position moves right material pressing mould 18, moves right and equally sets in material pressing mould 18 Have and choose piston 6, reset spring 7 and gland 8, structure construction is similar to right standard material pressing mould.Move material pressing mould in right side The right flexible material pressing mould 16 of 18 left side arrangement, right centering material pressing mould 17 is arranged in the left side of the flexible material pressing mould 16 in the right side, left right There is a T-slot in middle 17 right side of material pressing mould, and the left side of the flexible material pressing mould 16 in the right side is fixedly connected T-type guide rail 12, T-type guide rail 12 Match with the T-slot of right centering material pressing mould 117；The flexible driving cylinder 13 of setting in right centering material pressing mould 17, driving of stretching The rod end of cylinder 13 is fixedly connected plate 15, and gusset piece 15 is connected with the flexible material pressing mould 16 in the right side, and flexible driving cylinder 13 pushes the right side Flexible material pressing mould 16 is guiding with T-type guide rail 12, is moved forward and backward.

Such as Fig. 1, Fig. 5, Fig. 6, Fig. 7, linear guide 19 is installed on slide plate 101, linear guide 19 is equipped with to match therewith Sliding block 20, sliding block 20 are fixedly connected with slide carriage 21, and square bar fixing seat 22 is mounted on the left side of slide carriage 21, and square bar fixing seat 22 is equipped with One square through hole, square through hole and fixed 23 outer rim of square bar match, and fixed square bar 23 is hollow structure, in fixed 23 inner cavity of square bar Middle setting spring bearing 25 is equipped with tooth form on a seamed edge of the outer rim of fixed square bar 23；As shown in fig. 7, further including a rotation Square bar 24, rotation square bar 24 include two sections, left section for cylinder, right section be four prism type, rotate square bar 24 cylindrical segment with The inner ring tight fit of spring bearing 25 in fixed square bar 23 is set, the end of rotation square bar 24 is fixedly connected limited block 26, Rotation square bar 24 is limited the shaft shoulder and the shaft shoulder limitation axial movement of itself of block 26, can pivot in fixed 23 inner hole of square bar. First gear support base 27, rack gear guide pad 29 and second gear support base 28, the first tooth are installed side by side on the right side of slide carriage 21 It takes turns and spring bearing 25 is set in support base 27 and second gear support base 28, the inner hole of spring bearing 25 and the two of rotation gear 31 Boss outer circle is held to be fitted close, rotation 31 center of gear is equipped with square hole, and is slidably matched with the outer four directions of rotation square bar.On Fixed setting moves horizontally motor cabinet 32 in the square bar fixing seat 22 stated, and moves horizontally the horizontal drive that is fixedly connected of motor cabinet 32 and subtracts Fast machine 34, horizontal drive speed reducer 34 and 33 output shaft direct connection of horizontal drive motor are solid in the shaft of horizontal drive speed reducer 34 Surely there is horizontal drive gear 35, horizontal drive gear 35 is meshed with the tooth form on fixed one seamed edge of square tube outer rim, horizontal drive Motor 33 drives horizontal drive gear 35 to be driven square hole of the fixed square bar 23 in square bar fixing seat 22 and moves horizontally.

Position directly above on slide carriage 21 positioned at rack gear guide pad 29 is fixedly installed driving cylinder mounting plate 37, and overturning is driven Dynamic cylinder 36 is fixedly connected with driving cylinder mounting plate 37, and the rod end of overturning driving cylinder 36 is fixedly connected with rack gear 30, rack gear 30 and rotation 31 engaged transmission of rotating disk.

The square hole 47 in right section (the outer four directions) and turnover side rotating blade 402 that rotate square bar 24 matches (such as Figure 10), rotation The inclined-plane fitting corresponding with fixing seat 1 of the ramp formation 48 of rotor piece 402, realizes accurate rotational positioning, and can realize Bear bending pressure in rotating blade side.The outer four directions of fixed square bar 23 and the square hole 47 of affixed side rotating blade 401 match, Overturning driving cylinder 36 pushes the transmission rotation gear 31 of rack gear 30 to rotate, the rotation transmission of gear 31 rotation square bar 24 and turnover side rotation Blade 402 rotates, and when turnover side rotating blade 402 turns to fixed 401 position of side to overturn blade, overturning blade hangs over fixed The edge on the blade bearing 38 on slide carriage 21 is connect, rotates the outer four directions of square bar 24 and the outer four directions four sides weight of fixed square bar 23 at this time It closes, horizontal drive motor 33 drives the fixed square bar of horizontal drive gear drive to move horizontally, when fixed square bar 23 penetrates rotary side When overturning 402 inner hole of blade, rotating side-turning rotor piece 402 is converted into fixed side to overturn blade 401.

Such as Fig. 8, Fig. 9, centering motor cabinet 41 is fixedly mounted on guide holder 1, and be fixedly connected centering on centering motor cabinet 41 Speed reducer 40 is driven, centering drives speed reducer 40 and 39 output shaft direct connection of centering driving motor, and centering drives turning for speed reducer 40 Be fixed with centering driving gear 42 on axis, centering drives gear 42 and the engaged transmission of centering upper rack 43, centering upper rack 43 with Right centering material pressing mould 17 is fixedly connected, and is fixedly connected to setting upper rack limited block 46 above middle upper rack 43 in guide holder On 1, below to middle upper rack 43, centering idle gear 44 is set, centering idle gear 11 can turn along its centre bore on guide holder 1 It is dynamic, rack gear 45 under the centering that 44 arranged beneath of centering idle gear is engaged with, rack gear 45 and left centering pressure mould 11 under centering It is fixedly connected, centering driving motor 39 drives centering driving gear 42 to be driven the movement of centering upper rack 43, and symmetrical upper rack 43 passes Dynamic centering idle gear 44 rotates, and centering idle gear 44 is driven the movement of rack gear 45 under centering, by under centering upper rack 43 and centering Rack gear 45 is driven that left centering material pressing mould 11 and right centering material pressing mould 17 be opposite or counter motion.

As shown in Figure 1, Figure 2, in conclusion right centering material pressing mould 17 is fixedly connected with slide carriage 21, pass through horizontal drive motor 33 and driving cylinder 36 is driven fixed square bar 23 and rotation square bar 24 chooses the turnover side rotating blade 402 of desired quantity, centering Driving motor 39 is driven left centering material pressing mould 11 and right centering material pressing mould 17 moves toward one another, when left centering material pressing mould 11 with After turnover side rotating blade 402 contacts, stop centering driving motor 39, the push-and-pull cylinder 3 at 1 both ends of guide holder pushes the left side chosen Standard material pressing mould 5 and right standard material pressing mould 9 are drawn close to centre, until complete snap reaches the material pressing mould length of requirement. When folding has the cell type part 501 of flange, and material pressing mould needs to come out in cell type part 501, left centering material pressing mould 11 and the right side are right Flexible driving cylinder 13 on middle material pressing mould 17 pushes left flexible material pressing mould 10 and right flexible material pressing mould 16 to be moved forward and backward, The position for vacating a presser feet, chooses the standard material pressing mould of left and right, and the push-and-pull cylinder 3 of 1 left and right sides of guide holder pushes left and right Standard material pressing mould and move left that material pressing mould 14, to move right material pressing mould 18 mobile to center, to realize the standard at both ends The presser feet of material pressing mould avoids the in-flanges of cell type part 501.

Claims (4)

1. a kind of polygon bending machine material pressing mould length combination mechanism, it includes slide plate, linear guide is installed on slide plate, straight line is led Rail is equipped with the sliding block to match therewith, and sliding block is fixedly connected with slide carriage, it is characterized in that square bar fixing seat is mounted on the left side of slide carriage, Square bar fixing seat is equipped with a square through hole, and square through hole and fixed square bar outer rim match, and fixed square bar is hollow structure, in fixation Spring bearing is arranged in inner cavity in square bar, is equipped with tooth form on a seamed edge of the outer rim of fixed square bar；It further include a rotation square bar, rotation Turning square bar includes two sections, and left section is cylinder, and right section is four prism type, and the cylindrical segment for rotating square bar and setting are in fixed square bar In spring bearing inner ring tight fit, the end for rotating square bar is fixedly connected limited block, installs side by side on the right side of slide carriage One gear support base, rack gear guide pad and second gear support base；Setting in first gear support base and second gear support base Spring bearing, the inner hole and rotation gear both ends boss outer circle tight fit of spring bearing, rotation gear centre are equipped with square hole, and And it is slidably matched with the outer four directions of rotation square bar；The square hole of right section for rotating square bar and turnover side rotating blade matches, fixed The outer four directions of square bar and the square hole of affixed side rotating blade match, and fixed square bar driving machine is fixedly installed in square bar fixing seat Structure is provided with rotation square bar driving mechanism on slide carriage.

2. polygon bending machine material pressing mould length combination mechanism according to claim 1, it is characterized in that fixed square bar driving Mechanism include in square bar fixing seat fixed setting move horizontally motor cabinet, move horizontally the motor cabinet horizontal drive that is fixedly connected and subtract Fast machine, horizontal drive speed reducer and horizontal drive motor output shaft direct connection are fixed with level in the shaft of horizontal drive speed reducer Gear is driven, horizontal drive gear is meshed with the tooth form on fixed one seamed edge of square tube outer rim, and horizontal drive motor driven is horizontal Square hole of the fixed square bar of driving gear drive in square bar fixing seat moves horizontally.

3. polygon bending machine material pressing mould length combination mechanism according to claim 1, it is characterized in that rotation square bar driving Mechanism includes that the position directly above on slide carriage positioned at rack gear guide pad is fixedly installed driving cylinder mounting plate, overturning driving cylinder with Driving cylinder mounting plate is fixedly connected, and the rod end and rack gear for overturning driving cylinder are fixedly connected, rack gear and rotation gear engaged transmission.

4. polygon bending machine material pressing mould length combination mechanism according to claim 1, it is characterized in that being additionally provided with and sliding The guide holder that plate is fixedly connected, the guide holder bottom are equipped with groove between two parties, are respectively provided on the side of the left and right of guide holder two There is boss；Cylinder mounting plate is fixed at guide holder both ends respectively, fixes push-and-pull cylinder, the cylinder rod of push-and-pull cylinder on cylinder mounting plate It is fixedly connected with tooth form item, tooth form item is set in the lower grooves of guide holder and matches with groove.