CN205629138U - Compound mould in crowded limit of leaf spring tip corner cut - Google Patents

Abstract

The utility model relates to the technical field of production of automobile leaf springs, in particular to a compound mold for edge cutting and edge extrusion at the end of leaf springs, which includes an upper template and a lower template. The template is set with the lower corner cutter and the lower edge block corresponding to the upper corner cutter and the upper edge block respectively, the lower corner cutter is fixed on the lower corner cutter seat, and the two ends of the lower template are respectively set with the lower corner cutter seat and the lower edge edge block. Angle limit mechanism and edge limit mechanism. The utility model has a compact structure, can cut corners and squeeze edges on the end of the leaf spring, improve work efficiency, reduce labor intensity, save energy, ensure the width of the reed after edge squeeze, and improve product quality.

Description

Composite Die for Chamfering and Edge Extrusion at the End of Leaf Spring

technical field

The utility model relates to the technical field of production of automobile leaf springs, in particular to a composite mold for cutting corners and extruding edges at the ends of leaf springs.

Background technique

The leaf spring needs to be corner-cut during the processing process. After corner-cutting, the end of the leaf spring needs to undergo secondary processing until it reaches the required width before meeting the factory regulations. Because the material of the leaf spring is very hard, no matter whether it is chamfering or processing the width of the end of the leaf spring after chamfering, heating is required. In the existing leaf spring production process, firstly, the end of the leaf spring is heated, and then the end of the leaf spring is chamfered by a corner cutting station; after the corner cutting is completed, the end of the leaf spring is polished by a grinding instrument to make its width reach factory requirements. The main problems of the above method are: 1. Low production efficiency and high energy consumption; 2. High labor intensity and low production precision; 3. Serious waste of energy; 4. Repeated heating of leaf springs affects product quality.

Utility model content

In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a compound mold for edge cutting and edge extrusion at the end of the leaf spring, which has a compact structure and can perform angle cutting and edge extrusion on the end of the leaf spring to improve work efficiency and reduce manual labor. strength, save energy and improve product quality.

The technical scheme that the utility model adopts for solving its technical problem is:

The composite mold for corner cutting and edge extrusion at the end of the leaf spring includes an upper template and a lower template. Knife and the lower edge block, the lower edge cutter is fixed on the lower edge cutter seat, and the lower template two ends corresponding to the lower edge edge block and the lower edge edge block are respectively provided with a corner cutter limit mechanism and an edge edge limit mechanism.

The upper template of this mold is fixed on the slider of the punching machine through the upper mold handle. When in use, the heated leaf spring is placed on the lower corner cutting knife, and the leaf spring is fixed to the corner cutting position through the corner cutting limit mechanism, and then the punching machine The upper slider drives the upper template to move down, and cuts the end of the leaf spring through the relative movement of the upper and lower corner cutters. After the cutting is completed, the upper corner cutter resets, and the operator transfers the leaf spring after corner cutting to the edge extrusion station. And the leaf spring is assisted by the edge-extrusion limit mechanism. After fixing, the slider on the punching machine drives the upper template to move down again, and squeezes the end of the leaf spring through the upper edge-extrusion block to make its width reach the factory size. The stroke of the slider is set according to the ex-factory size of the end of the leaf spring. The edge extrusion precision is high, and it is not affected by manual operation, which improves the quality of the leaf spring product.

Among them, the preferred scheme is:

The upper cutting knife includes a pair of upper cutting knives arranged oppositely, the upper cutting knife is fixed on the upper cutting knife seat through the backing plate, and the upper cutting knife seat is fixed on the upper template through the upper cutting knife seat backing plate, Because it is a double-station mould, the movement position of the upper slider of the punch press is relatively strict when the product is extruded. In order to prevent the two stations from interfering with each other, the upper cutter seat backing plate is set to adjust the relative position of the upper corner cutter. The normal operation of the corner cutting station is guaranteed on the basis of the extrusion width.

The upper cutter is set as a rectangular knife, and the upper cutter blade is provided with a knife relief groove, and the backing knife plate is wedge-shaped, and the wedge-shaped backing knife plate is provided with an inclined through hole, and the inclined angle of the wedge-shaped backing knife plate is The inclination angle of the through hole is suitable for the cutting angle of the leaf spring to be processed, because the upper cutter needs to be used repeatedly in the production process, and the frequency of replacement is relatively large. In the case of damage, it is set to a wedge shape with high precision requirements. One-time processing can be used for a long time, reducing the cost of equipment use, and the relief groove reduces the difficulty of retracting the upper corner cutter, which can prevent the upper corner cutter from sticking when it is reset. The leaf spring moves.

Both sides of the lower corner cutting knife are provided with a knife relief groove, which is convenient for cutting waste edge blanking.

The chamfer limiting mechanism includes a front chamfer limiter and a rear chamfer limiter; the front chamfer limiter includes a front chamfer support block and a front chamfer limit plate, and the front chamfer limit plate It is fixed in the chute of the front chamfer support block through oblong holes and bolts; the rear chamfer limiter includes positioning pins and rear chamfer support blocks, the positioning pins are fixed on the rear chamfer support blocks, and the rear chamfer support blocks It is fixed on the rear chamfer positioning rod through the guide groove and guide key structure, the front chamfer limiter locates the end of the leaf spring chamfer, the rear chamfer limiter fixes the center hole of the leaf spring, the front chamfer limit plate and the rear The position of the chamfer support block can be adjusted according to the length of the leaf spring. The front chamfer stopper and the rear chamfer stopper can be used alone or in combination according to the different precision requirements of different products.

The leaf spring centering limit assembly is arranged on both sides of the lower corner cutting tool seat. The leaf spring centering limit assembly includes a front limit plate and a rear limit plate oppositely arranged. The front limit plate is set as an inverted T shape, and the horizontal The side is fixed on the lower template, and the rear limit plate is fixed on the side of the rear corner support block away from the front limit plate. The centering limit component ensures that the end of the leaf spring cuts symmetrically to prevent cutting deviation. The front limit plate and the rear The relative distance between the limiting plates can be adjusted according to the leaf spring width.

The lower extrusion edge block is provided with an accommodation groove corresponding to the leaf spring, and the bottom of the accommodation groove has a circular arc structure, which can ensure the position of the leaf spring in the accommodation groove, and the length can meet the length range of the leaf spring that needs to be processed. At this time, the end of the plate spring to be edged stands in the accommodation groove, and the upper edge block is pressed down to realize the edge extrusion of the leaf spring, and the side walls on both sides of the accommodation groove play a lateral limit on the leaf spring in the edge effect.

The edge limiting mechanism includes a front edge support block, a front edge limit plate, a rear edge positioning rod and a rear edge support block, and the front edge limit plate is fixed to the front edge through an oblong hole and bolts In the chute of the support block, the rear edge support block is fixed on the rear edge positioning rod through the guide groove and the guide key structure, and the height of the rear edge support block is the height of the bottom of the accommodation groove set by the lower edge They are the same, and play a supporting role to the leaf spring in the process of edge extrusion. The positions of the front edge limit plate and the rear edge support block can be adjusted according to the length of the leaf spring.

The upper template and the lower template are provided with guide sleeves and guide shafts oppositely, which play a role in guiding and positioning the actions of the upper and lower templates to ensure machining accuracy.

The guide shaft is set as a stepped cylinder, which acts as a limit on the upper template while ensuring that the two stations can work normally, so as to prevent the slide block on the punch from excessively descending displacement and damage the mold.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model has a compact structure, can cut corners and squeeze edges on the end of the leaf spring, improves work efficiency, reduces labor intensity, saves energy, and improves product quality. The upper template of this mold is fixed on the slider of the punching machine through the upper mold handle. When in use, the heated leaf spring is placed on the lower corner cutting knife, and the leaf spring is fixed to the corner cutting position through the corner cutting limit mechanism, and then the punching machine The upper slider drives the upper template to move down, and cuts the end of the leaf spring through the relative movement of the upper and lower corner cutters. After the cutting is completed, the corner cutter resets, and the operator transfers the corner-cut leaf spring to the lower edge block storage tank inside, and the plate spring is assisted by the edge-extrusion limit mechanism. After fixing, the slider on the punching machine drives the upper template to move down again, and squeezes the end of the leaf spring through the upper edge-extrusion block to make its width reach the factory size. The stroke of the slider on the punching machine is set according to the ex-factory size of the end of the leaf spring. The extrusion precision is high, and it is not affected by manual operation, which improves the quality of the leaf spring product.

Description of drawings

Fig. 1 is a side view of the structure of the utility model.

Fig. 2 is a front view of the structure of the utility model.

Fig. 3 is a bottom view of the upper formwork of the utility model.

Fig. 4 is a plan view of the lower formwork of the utility model.

In the figure: 1. Upper template; 2. Lower template; 3. Upper corner cutter; 4. Upper edge extrusion block; 5. Lower corner cutter; 6. Lower edge extrusion; 7. Lower corner cutter seat; Knife plate; 9, upper cutter seat; 10, upper cutter seat backing plate; 11, upper cutter; 12, front corner support block; 13, front corner limit plate; 14, positioning pin; 15, rear Corner cutting support block; 16. Rear corner cutting positioning rod; 17. Front limit plate; 18. Rear limit plate; 19. Front edge support block; 20. Front edge limit plate; 21. Back edge positioning Rod; 22, back-extruded edge support block; 23, guide sleeve; 24, guide shaft; 25, upper die handle; 26, accommodation groove.

detailed description

Below in conjunction with accompanying drawing, the utility model embodiment is further described:

Example 1:

As shown in Figures 1-4, the composite mold for corner cutting and edge extrusion at the end of the leaf spring in this embodiment includes an upper template 1 and a lower template 2, and an upper corner cutter 3 and an upper edge extrusion block are arranged on the upper template 1 4. The lower template 2 corresponds to the upper corner cutter 3 and the upper edge extrusion block 4 respectively, and the lower corner cutter 5 and the lower edge extrusion block 6 are set, the lower corner cutter 5 is fixed on the lower corner cutter seat 7, and the two ends of the lower template 2 correspond to the lower edge The corner knife seat 7 and the lower edge-extrusion block 6 are respectively provided with an angle-cutting limiting mechanism and an edge-extruding limiting mechanism.

Wherein, the upper corner cutting knife 3 includes a pair of upper cutting knives 11 which are arranged oppositely, and the upper cutting knife 11 is fixed on the upper cutting knife seat 9 through the backing knife plate 8, and the upper cutting knife seat 9 passes through the upper cutting knife seat backing plate 10 is fixed on the upper template 1. Because it is a double-station mold, the requirements for the moving position of the upper slider of the punch press are relatively strict when the product is extruded. The relative position of the corner cutter 3 is to ensure the normal operation of the corner cutter station on the basis of ensuring the edge width; the upper cutter 11 is made as a rectangular cutter, and the upper cutter 11 blades are provided with a knife relief groove. The backing knife plate 8 is wedge-shaped, and the wedge-shaped backing knife plate 8 is provided with an inclined through hole. It needs to be used repeatedly in the production process, and the replacement frequency is relatively large. The upper cutter 11 is set as a rectangle that is easier to process, and the backing knife plate 8 is generally not damaged. It is set as a wedge shape that requires higher precision. The processing can be used for a long time, reducing the cost of equipment use. The relief groove reduces the difficulty factor of the upper corner cutter 3 retracting, which can prevent the upper corner cutter 3 from sticking and driving the leaf spring to move when the upper corner cutter 3 is reset; there are relief grooves on both sides of the lower corner cutter 5 , It is convenient for cutting waste edge blanking.

Cutting limit mechanism comprises front cutting angle limiter and rear cutting angle limiter; Said front cutting angle limiter comprises front cutting angle support block 12 and front cutting angle limit plate 13, and front cutting angle limit plate 13 is fixed in the chute of the front chamfer support block 12 through oblong holes and bolts; the rear chamfer limiter includes a positioning pin 14 and a rear chamfer support block 15, and the positioning pin 14 is fixed on the rear chamfer support block 15 , the rear chamfer support block 15 is fixed on the rear chamfer positioning rod 16 through the guide groove and the guide key structure, the front chamfer limiter positions the end of the leaf spring chamfer, the rear chamfer limiter fixes the center hole of the leaf spring, The positions of the front chamfer limiting plate 13 and the rear chamfer support block 15 can be adjusted according to the length of the leaf spring. Can be used in combination.

The two sides of the lower corner cutter seat 7 are provided with a leaf spring centering limit assembly, and the leaf spring centering limit assembly includes a front limit plate 17 and a rear limit plate 18 which are relatively arranged, and the front limit plate 17 is set as an inverted T shape. It is fixed on the lower formwork 2 by the horizontal edge, and the rear limit plate 18 is fixed on the side of the rear corner support block 15 away from the front limit plate 17. The center limit component ensures that the edge of the leaf spring is cut symmetrically to prevent the cutting deviation. The relative distance between the front limiting plate 17 and the rear limiting plate 18 can be regulated according to the width of the leaf spring; the lower edge block 6 corresponds to the leaf spring to be provided with accommodating groove 26, and the bottom of accommodating groove 26 has an arc structure, which can Ensure the position of the leaf spring in the accommodation groove 26, the length of the accommodation groove 26 can meet the length range of the required processed leaf spring. The side block 4 presses down to realize the extrusion of the leaf spring, and the sidewalls on both sides of the accommodating groove 26 play a lateral limiting effect on the leaf spring in the extrusion.

The limit mechanism for edge extrusion includes a front edge support block 19, a front edge limit plate 20, a rear edge positioning rod 21 and a rear edge support block 22, and the front edge limit plate 20 is fixed on the In the chute of the front edge support block 19, the rear edge support block 22 is fixed on the rear edge positioning bar 21 through the guide groove and the guide key structure, and the height of the rear edge support block 22 is set by the following edge block 6. The height of the groove bottom of the accommodating groove 26 is the same, and plays a supporting role to the leaf spring in the process of edge extrusion, and the positions of the front edge limit plate 20 and the rear edge support block 22 can be adjusted according to the length of the leaf spring adjust.

On the upper template 1 and the lower template 2, guide sleeves 23 and guide shafts 24 are arranged oppositely to guide and position the actions of the upper and lower templates to ensure machining accuracy; the guide shaft 24 is set as a stepped cylinder to ensure that the two stations In the case of normal engineering, it can limit the upper template 1 to prevent the sliding block on the punch from being too large and damage the mold.

The utility model has a compact structure, can cut corners and squeeze edges on the end of the leaf spring, improves work efficiency, reduces labor intensity, saves energy, and improves product quality. The upper template 1 of this mold is fixed on the slider on the punching machine through the upper mold handle 25. When in use, the heated leaf spring is placed on the lower corner cutting knife 5, and the leaf spring is fixed to the corner cutting position through the corner cutting limit mechanism auxiliary leaf spring , and then the slider on the punching bed drives the upper template 1 to move down, and cuts the end of the leaf spring through the relative movement of the upper and lower corner cutters. On the edge station, and the leaf spring is assisted by the edge-extrusion limit mechanism to fix it. After fixing, the slider on the punching bed drives the upper template 1 to move down again, and squeezes the end of the leaf spring through the upper edge block 4 to make its width reach the factory. The size and the stroke of the slider on the punching machine are set according to the ex-factory size of the end of the leaf spring during edge extrusion. The edge extrusion precision is high, and it is not affected by manual operation, which improves the quality of leaf spring products.

Claims (10)

1. a leaf spring end corner cut squeezes limit composite die, it is characterised in that include cope match-plate pattern (1) and lower bolster (2), institute State and corner cutter (3) and upper crowded limit block (4) are set on cope match-plate pattern (1), the upper corner cutter (3) of lower bolster (2) correspondence respectively Arranging undercut angles cutter (5) and lower crowded limit block (6) with upper crowded limit block (4), undercut angles cutter (5) is fixed on undercut angles tool rest (7) On, lower bolster (2) two ends correspondence undercut angles tool rest (7) and lower crowded limit block (6) are respectively provided with corner cut position-limit mechanism and crowded margin Position mechanism.

Leaf spring end the most according to claim 1 corner cut squeezes limit composite die, it is characterised in that described upper corner cutter (3) Including the upper cutter (11) of pair of opposing, described upper cutter (11) is fixed on upper cutter seat (9) by pad knife plate (8) On, upper cutter seat (9) is fixed on cope match-plate pattern (1) by upper cutter seat board (10).

Leaf spring end the most according to claim 2 corner cut squeezes limit composite die, it is characterised in that described upper cutter (11) Being set to rectangle cutter, be provided with escape at upper cutter (11) blade, described pad knife plate (8) is wedge shape, wedge piece knife plate (8) It is provided with the through hole of inclination, wedge piece knife plate (8) hypotenuse angle of inclination and through hole angle of inclination and leaf spring corner cut angle phase to be processed Adapt to.

Leaf spring end the most according to claim 1 corner cut squeezes limit composite die, it is characterised in that described undercut angles cutter (5) Both sides are provided with escape.

Leaf spring end the most according to claim 1 corner cut squeezes limit composite die, it is characterised in that described corner cut position-limit mechanism Including front corner cut locating part and rear corner cut locating part；Described front corner cut locating part cuts corner supporting block (12) and front corner cut limit before including Position plate (13), front corner cut limiting plate (13) is cut before being fixed on by elongated hole and bolt in the chute of corner supporting block (12)； Rear corner cut locating part includes alignment pin (14) and rear cutout corner supporting block (15), and alignment pin (14) is fixed on rear cutout corner supporting block (15) On, rear cutout corner supporting block (15) is fixed in rear corner cut location bar (16) by gathering sill and feather key structure.

Leaf spring end the most according to claim 5 corner cut squeezes limit composite die, it is characterised in that described undercut angles tool rest (7) Both sides arrange leaf spring centering limit assembly, and leaf spring centering limit assembly includes front limit plate (17) and the rear position margining plate being oppositely arranged (18), front limit plate (17) is set to inverted T-shape, is fixed on lower bolster (2) by horizontal sides, and rear position margining plate (18) is solid It is scheduled on the rear cutout corner supporting block (15) side away from front limit plate (17).

Leaf spring end the most according to claim 1 corner cut squeezes limit composite die, it is characterised in that described lower crowded limit block (6) Corresponding leaf spring arranges storage tank (26).

Leaf spring end the most according to claim 1 corner cut squeezes limit composite die, it is characterised in that described crowded limit position-limit mechanism Edge supporting pad (19), front crowded limit limiting plate (20), rear crowded location bar, limit (21) and rear crowded edge supporting pad (22) is squeezed including front, Front limit limiting plate (20) of squeezing is fixed in the front chute squeezing edge supporting pad (19) by elongated hole and bolt, and rear crowded limit supports Block (22) is squeezed on location bar, limit (21) after being fixed on by gathering sill and feather key structure.

Leaf spring end the most according to claim 1 corner cut squeezes limit composite die, it is characterised in that described cope match-plate pattern (1) and Fairlead (23) and the axis of guide (24) it is oppositely arranged on lower bolster (2).

Leaf spring end the most according to claim 9 corner cut squeezes limit composite die, it is characterised in that the described axis of guide (24) On be set to stairstepping cylinder.