A kind of mould punching method
Technical field
The present invention relates to a kind of mould punching method, especially relate to a kind of diel process for stamping.
Background technology
Mould, is the instrument for formed article, and this instrument is made up of various parts.It mainly realizes the processing of article profile by the change of institute's moulding material physical state.Conventionally use in industry, in order to injection moulding, blowing, extrude, various moulds and instrument that the method such as die casting or forging forming, smelting, punching press, stretching obtains required product.Mould kind is a lot, can be divided into: the mould of the mould of processing metal and machining of non-metallic and powder metallurgy according to processing object and processing technology.By the difference of the material of institute's moulding, mould can be divided into hardware dies, plastic mould, with and special dies.According to design feature, mould can be divided into again the blanking die of plane and have the swaging die in space.Make under external force blank become the instrument of the product that has given shape and size.Extensively with ten stamping-outs, die forging, Leng Dun, extruding, metallic sintered products compacting, compression casting, and during the compression moulding of goods such as engineering plastics, rubber, pottery or the shaping of injection moulding process.Mould has specific profile or cavity shape, and the contour shape that application has cutting edge can make blank separate (stamping-out) by outline line shape.Application cavity shape can make blank obtain corresponding three-dimensional shape.Mould generally comprises dynamic model and two parts of cover half (or punch and die), the two partable.Separately time, take out product, while closing up, make blank inject mold cavity and be shaped.Mould is precision instrument, complex-shaped, bears the expansive force of blank, and structural strength, rigidity, case hardness, surface roughness and machining accuracy are all had higher requirements, and the development level that mould is produced is one of important symbol of machine-building level.Mould, except itself, also needs die holder, mould bases, guider and product liftout attachment etc., and these parts are generally all made universal.
There is following technological deficiency in existing diel: (1) existing diel is carried out stamped workpieces location by locating hole and alignment pin conventionally, but locating hole and alignment pin coordinate and need the time long, affect the operating efficiency of mould.(2) stripper of existing mold can only carry out separating of workpiece and mould, and does not have the function of unloading stamped workpieces.
Summary of the invention
The present invention has designed a kind of mould punching method, the technical problem of its solution is: (1) existing diel is carried out stamped workpieces location by locating hole and alignment pin conventionally, need the time long but locating hole and alignment pin coordinate, affect the operating efficiency of mould.(2) stripper of existing mold can only carry out separating of workpiece and mould, and does not have the function of unloading stamped workpieces.
In order to solve the technical problem of above-mentioned existence, the present invention has adopted following scheme:
A kind of mould, comprise punch system (1) and die system (2), it is characterized in that: punch system (1) is made up of convex mould base (11), punch (13) and hydraulic means (16), convex mould base (11) end face is provided with described hydraulic means (16), convex mould base (11) bottom surface is fixed with described punch (13), also be provided with left tilted surface pushing block (12) and right tilted surface pushing block (14) in convex mould base (11) bottom surface, punch (13) is positioned between left tilted surface pushing block (12) and right tilted surface pushing block (14); Die system (2) is made up of die (21) and die socket (29), and the two ends on die (21) surface are respectively equipped with left slip locating piece (22) and right slip locating piece (23); Left slip locating piece (22) one end is connected with one end of left expansion link (222), the other end of left expansion link (222) is connected with left fixed block (26) by left back-moving spring (223), and left slip locating piece (22) other end is connected with the left clamping part of stamped workpieces (221); Right slip locating piece (23) one end is connected with one end of right expansion link (232), the other end of right expansion link (232) is connected with right fixed block (27) by right back-moving spring (233), and right slip locating piece (27) other end is connected with the right clamping part of stamped workpieces (231); Stamped workpieces is positioned on the die (21) between the left clamping part of stamped workpieces (221) and the right clamping part of stamped workpieces (231), and punch (13) is positioned at directly over stamped workpieces; Left tilted surface pushing block (12) moves down the inclined-plane that its inclined-plane in process heads on left slip locating piece (22) and moves to stamped workpieces, and right tilted surface pushing block (14) moves down the inclined-plane that its inclined-plane in process also heads on right slip locating piece (23) and moves to stamped workpieces; Between convex mould base (11) and die socket (29), be also provided with limited post (28).
Further, on die (21), be provided with stripper (211), between one end of stripper (211) and hydraulic cylinder (213), be connected by connecting rod (212), the other end of stripper (211) is stuck in the draw-in groove (214) of die (21), when hydraulic cylinder (213) jack-up stripper (211), draw-in groove (214) is as stripper (211) balance pivot.
Further, between left slip locating piece (22) and left fixed block (26), be also provided with left location-plate (24), it is upper that left location-plate (24) is fixed on die (21), and left expansion link (222) is through left location-plate (24); Between right slip locating piece (23) and right fixed block (27), be also provided with right location-plate (25), it is upper that right location-plate (25) is fixed on die (21), and right expansion link (232) is through left location-plate (24).
Further, limited post (28) is fixed on convex mould base (11) or die socket (29).
Further, convex mould base (11) is rigidly connected by set bolt (15) with punch (13); Die (21) is also rigidly connected by set bolt with die socket (29).
A kind of mould punching method, the mould that the method is used comprises punch system (1) and die system (2), punch system (1) is made up of convex mould base (11), punch (13) and hydraulic means (16), convex mould base (11) end face is provided with described hydraulic means (16), convex mould base (11) bottom surface is fixed with described punch (13), also be provided with left tilted surface pushing block (12) and right tilted surface pushing block (14) in convex mould base (11) bottom surface, punch (13) is positioned between left tilted surface pushing block (12) and right tilted surface pushing block (14); Die system (2) is made up of die (21) and die socket (29), and the two ends on die (21) surface are respectively equipped with left slip locating piece (22) and right slip locating piece (23); Left slip locating piece (22) one end is connected with one end of left expansion link (222), the other end of left expansion link (222) is connected with left fixed block (26) by left back-moving spring (223), and left slip locating piece (22) other end is connected with the left clamping part of stamped workpieces (221); Right slip locating piece (23) one end is connected with one end of right expansion link (232), the other end of right expansion link (232) is connected with right fixed block (27) by right back-moving spring (233), and right slip locating piece (27) other end is connected with the right clamping part of stamped workpieces (231); Stamped workpieces is positioned on the die (21) between the left clamping part of stamped workpieces (221) and the right clamping part of stamped workpieces (231), and punch (13) is positioned at directly over stamped workpieces; Left tilted surface pushing block (12) moves down the inclined-plane that its inclined-plane in process heads on left slip locating piece (22) and moves to stamped workpieces, and right tilted surface pushing block (14) moves down the inclined-plane that its inclined-plane in process also heads on right slip locating piece (23) and moves to stamped workpieces; Between convex mould base (11) and die socket (29), be also provided with limited post (28), the method comprises the following steps: step 1, under the effect of hydraulic means (16), move downward when punch (13), the inclined-plane of the left tilted surface pushing block (12) of punch (13) touches the inclined-plane of left slip locating piece (22), and left tilted surface pushing block (12) is given left slip locating piece (22) thrust to the right; In like manner, right tilted surface pushing block (14) is given right slip locating piece (23) thrust left, the left clamping part of stamped workpieces (221) of left slip locating piece (22) clamps stamped workpieces locate with the right clamping part of stamped workpieces (231) of right slip locating piece (23), and stamped workpieces finally completes punching course under the punching press of punch and groove; Step 2, after punching press completes, slip locating piece, under the effect of back-moving spring, is got back to the position before punching press, for punching press is next time prepared; After step 3, punching press, stripper makes stamping products separate with punch, and by connect hydraulic cylinder and connecting rod (212) by stripper jack-up, the stamping products being positioned on stripper automatically slides under the effect of gravity, separates with stripper.
This mould punching method, compared with existing mold process for stamping, has following beneficial effect:
(1) the present invention is owing to being respectively equipped with inclined-plane pushing block and slip locating piece on punch and die, punch moves downward inclined-plane pushing block and slip locating piece in process and mutually pushes and impel the relative motion of two slip locating pieces, and finally makes stamped workpieces well be located.
(2) the present invention is because fixed block and expansion link arrange back-moving spring, and complete when punch punching press, after inclined-plane pushing block separates with slip locating piece, back-moving spring can retract original position by slip locating piece, prepares for punching press next time, has reduced punching press interval time.
(3) the present invention is because stripper can pass through hydraulic cylinder jack-up, thereby stripper is being guaranteed stamped workpieces and punch after separating, under the inclined-plane that can also make the complete workpiece of punching press form at stripper, automatically slide, facilitated blanking process, also saved human cost.
(4) the present invention is owing to being provided with limited post between convex mould base and die socket, it is as the distance that keeps punch and die after depressing at punch that this limited post can make limited post 5, prevent in the situation that not placing blank, or in the too large situation of hydraulic shock power, cause punch and the phenomenon that die directly clashes into mutually, mould is produced and destroy; In addition, limited post has also played protective effect, and each punching press completes, and utilizes stripper that blank is unloaded, and then next blank is installed and is carried out punching press, realizes the continuity of work.
Brief description of the drawings
Fig. 1: the structural representation of mould of the present invention;
Fig. 2: the stripper work schematic diagram in mould of the present invention.
Description of reference numerals:
1-punch system; 11-convex mould base; 12-left tilted surface pushing block; 13-punch; 14-right tilted surface pushing block; 15-set bolt; 16-hydraulic means; 2-die system; 21-die; 211-stripper; 212-connecting rod; 213-hydraulic cylinder; 214-draw-in groove; 22-left slip locating piece; The left clamping part of 221-stamped workpieces; 222-left expansion link; 223--left back-moving spring; 23-right slip locating piece; The right clamping part of 231-stamped workpieces; 232-right expansion link; 233-right back-moving spring; 24-left location-plate; 25-right location-plate; 26-left fixed block; 27-right fixed block; 28-limited post; 29-die socket.
Detailed description of the invention
Below in conjunction with Fig. 1 and Fig. 2, the present invention will be further described:
As shown in Figure 1, a kind of mould, comprise punch system 1 and die system 2, punch system 1 is made up of convex mould base 11, punch 13 and hydraulic means 16, convex mould base 11 end faces are provided with hydraulic means 16, convex mould base 11 bottom surfaces are fixed with described punch 13, are also provided with left tilted surface pushing block 12 and right tilted surface pushing block 14 in convex mould base 11 bottom surfaces, and punch 13 is between left tilted surface pushing block 12 and right tilted surface pushing block 14; Die system 2 is made up of die 21 and die socket 29, and the two ends on die 21 surfaces are respectively equipped with left slip locating piece 22 and right slip locating piece 23; Left slip locating piece 22 one end are connected with one end of left expansion link 222, and the other end of left expansion link 222 is connected with left fixed block 26 by left back-moving spring 223, and left slip locating piece 22 other ends are connected with the left clamping part 221 of stamped workpieces; Right slip locating piece 23 one end are connected with one end of right expansion link 232, and the other end of right expansion link 232 is connected with right fixed block 27 by right back-moving spring 233, and right slip locating piece 27 other ends are connected with the right clamping part 231 of stamped workpieces; Stamped workpieces is on the die 21 between the left clamping part 221 of stamped workpieces and the right clamping part 231 of stamped workpieces, and punch 13 is positioned at directly over stamped workpieces; Left tilted surface pushing block 12 moves down the inclined-plane that its inclined-plane in process heads on left slip locating piece 22 and moves to stamped workpieces, and right tilted surface pushing block 14 moves down the inclined-plane that its inclined-plane in process also heads on right slip locating piece 23 and moves to stamped workpieces; Between convex mould base 11 and die socket 29, be also provided with limited post 28, limited post 28 is fixed on convex mould base 11 or die socket 29.Between left slip locating piece 22 and left fixed block 26, be also provided with left location-plate 24, left location-plate 24 is fixed on die 21, and left expansion link 222 is through left location-plate 24; Between right slip locating piece 23 and right fixed block 27, be also provided with right location-plate 25, right location-plate 25 is fixed on die 21, and right expansion link 232 is through left location-plate 24.Convex mould base 11 is rigidly connected by set bolt 15 with punch 13; Die 21 is also rigidly connected by set bolt with die socket 29.
As shown in Figure 2, on die 21, be provided with stripper 211, between one end of stripper 211 and hydraulic cylinder 213, be connected by connecting rod 212, the other end of stripper 211 is stuck in the draw-in groove 214 of die 21, when hydraulic cylinder 213 jack-up stripper 211, draw-in groove 214 is as stripper 211 balance pivots.
The operation principle of mould of the present invention is as follows: when punch 13 moves downward under the effect of hydraulic means 16, the inclined-plane of the left tilted surface pushing block 12 of punch 13 touches the inclined-plane of left slip locating piece 22, and left tilted surface pushing block 12 is given left slip locating piece 22 thrust to the right; In like manner, right tilted surface pushing block 14 is given right slip locating piece 23 thrust left, the left clamping part 221 of stamped workpieces of left slip locating piece 22 clamps stamped workpieces locate with the right clamping part 231 of stamped workpieces of right slip locating piece 23, and stamped workpieces finally completes punching course under the punching press of punch and groove.Thereby the present invention utilizes punch to move downward to make to slide locating piece that workpiece is accurately located, improve the quality of stamping products.
After punching press completes, slip locating piece, under the effect of back-moving spring, is got back to punching press position before, for punching press is next time prepared.
After punching press, stripper makes stamping products separate with punch.And its hydraulic cylinder by connection is by stripper jack-up, and the stamping products being positioned on stripper automatically slides under the effect of gravity, separates with stripper.
By reference to the accompanying drawings the present invention is carried out to exemplary description above; obvious realization of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present invention and technical scheme to carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all in protection scope of the present invention.