Mechanical sectional blanking die

Abstract

The utility model discloses a kind of mechanical segmented cutting die of stamping part, including gear, with annular convex tooth and tooth slot;Hook-shaped part, linear reciprocating motion and hook gear rotation;Swing block, coaxial fixed with gear and is equipped with radial boss;Slicing slider, linear reciprocating motion can be along the length direction of itself, radial boss extrusion drives its linear movement when gear rotates;Blanking punch, with slicing slider vertically arranged and can punch cutting material band.It is equipped with active step surface and driven step surface respectively in slicing slider and blanking punch contact end: active step surface contains alternate longitudinal surface and inclined surface, driven step surface contains alternate horizontal surface and inclined surface;When slicing slider drives blanking punch, active inclined surface and driven horizontal surface sliding contact.Adopt this utility model by the precision transmission of gear and hook-shaped part, the motion conversion of swing block and slicing slider, and the structural design of step surface, realize the automatic precision segmented cutting of stamping part, satisfy specific quantity grouping demand.

Claims

1. A mechanical blanking and parting die for a stamped part, characterized in that, include: A gear, comprising a ring array of protruding teeth, with grooves formed between connected protruding teeth; The hook-shaped component has a linear reciprocating degree of freedom, and the hook-shaped component can hook onto the tooth groove and drive the gear to rotate; A swing block is fixed coaxially with a gear, the gear rotates synchronously with the swing block, and the swing block has radial protrusions. The slicing slider has a linear reciprocating degree of freedom along its own length. When the gear rotates, the end of the radial protrusion can contact one end of the slicing slider and move along an arc, squeezing and driving the slicing slider, forcing it to move in a straight line. The feeding punch is arranged perpendicular to the length direction of the slicing slider, and one end of the feeding punch can cut the material strip; The slicing slider and the feeding punch each have an active step surface and a driven step surface at their contact ends. The active step surface includes several active longitudinal surfaces and active inclined surfaces arranged alternately. The driven step surface includes several driven transverse surfaces and driven inclined surfaces arranged alternately. The active longitudinal surface is parallel to the movement direction of the slicing slider, and the driven transverse surface is perpendicular to the movement direction of the feeding punch. The intersection of the active longitudinal surface and the adjacent active oblique surface forms an obtuse concave angle, and the intersection of the driven transverse surface and the driven oblique surface forms an obtuse convex angle. When the slicing slider drives the feeding punch to move, the active inclined surface and the driven transverse surface make surface-to-surface sliding contact.

2. The mechanical segmentation cutting die for stamped parts according to claim 1, characterized in that: The active longitudinal surface is parallel to or in contact with the driven transverse surface, and the active oblique surface is parallel to or in contact with the driven oblique surface. The active step surface includes a first active inclined surface, a first active longitudinal surface, a second active inclined surface, a second active longitudinal surface, and a third active inclined surface connected in sequence; The driven inclined surface includes a first driven inclined surface, a first driven transverse surface, a second driven inclined surface, and a second driven transverse surface that are connected in sequence.

3. The mechanical blanking and parting die of claim 2, wherein: The oblique length of the first active oblique surface is less than the oblique length of the first driven oblique surface, the longitudinal length of the first active longitudinal surface is greater than the transverse length of the first driven transverse surface, and the oblique length of the second active oblique surface is equal to the oblique length of the second driven oblique surface.

4. The mechanical blanking and parting die of claim 1, wherein: The slice slider has an enlarged head at one end away from the active step surface. The top of the enlarged head has a top horizontal surface, and top inclined surfaces are symmetrically arranged on both sides of the top horizontal surface. The radial protrusion slides in contact with the top horizontal surface and the top inclined surface. The slicing slider is fitted with a spring, one end of which abuts against the root of the enlarged head.

5. The mechanical blanking and parting die of claim 1, wherein: The feeding punch has a blind hole, and the opening direction of the blind hole is towards the end of the feeding punch that does not have a driven step surface.

6. The mechanical blanking and parting die of claim 1, wherein: The gear is a ratchet; The gear and the swing block are also coaxially fixed with a bearing rod by means of key connection.

7. The mechanical blanking and parting die of claim 1, wherein: From an axial perspective, the outline of the radial protrusion is an isosceles triangle with rounded outer corners at the ends; the outline of the tooth is a trapezoid with an obtuse lower base angle.

8. The mechanical blanking and parting die of claim 1, wherein: The radial distance from the end of the radial protrusion to the axis of rotation of the swing block is not less than the radial distance from the end of the tooth to the axis of rotation of the gear; The pendulum block has a ring structure, and several pendulum blocks can be stacked coaxially and fixed with gears. The radial protrusions of different pendulum blocks face different radial directions.

9. The mechanical blanking and parting die of claim 1, wherein: The hook-shaped component and the slicing slider are respectively fixed to the upper and lower ends of the gear. The hook-shaped component has a reciprocating translational degree of freedom in the horizontal direction, and the slicing slider has a reciprocating lifting degree of freedom in the vertical direction.

10. The mechanical blanking and parting die of claim 1, wherein: An anti-backward component is also provided next to the gear. The anti-backward component has elastic potential energy, and the end of the anti-backward component has a hemispherical head that can penetrate into the tooth groove.

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