CN205414162U - Guide mechanism of press die - Google Patents

Abstract

The utility model discloses a guide mechanism of press die, it is including locating a plurality of guides round pin on the press die to and locate and treat corresponding on the processing material and hold a plurality of guide holes of guide round pin, the guide hole is regular polygon's perforation and/or hole groove for the cross section. The guide hole the size with guide round pin coincide, but guide round pin inscribe in in the guide hole to this guarantees the guide accuracy, the cross section of guide hole is established to regular polygon, guide round pin insert the inscribe in in the guide hole, the area of contact that has significantly reduced deviates from more easily to effectively avoid the card material.

Description

The guide mechanism of stamping die

Technical field

This utility model belongs to mould processing and manufacturing technical field, is specifically related to the guide mechanism of a kind of stamping die.

Background technology

During stamping die produces parts, it is typically provided guide mechanism to ensure accurate stamping-out, guide mechanism generally includes the some guide pins being located in stamping die lower mold and/or upper mold and the some guide holes being located on material to be punched, guide pins can stretch into the guide hole on material to be processed, with this guiding material to be processed to tram the movement that limits material in blanking process.In existing technology, guide pins is cylindrical structural, and the guide hole on material to be processed is the circular port matched.After material to be processed is punched, owing to being compressed, circular guide hole on material to be processed is likely to occur the phenomenon of shrinkage cavity or deformation, this allows for guide pins and is easily clamped by material to be processed, when upper and lower mould separates, material to be processed blocks and can not deviate from smoothly even to occur that bending damages, not only affect product quality, reduce production efficiency simultaneously.For avoiding the above-mentioned phenomenon that gets stuck, prior art is to increase the gap between guide pins and guide hole, so can increase error, thus affect product quality and even result in deformation of products.

Utility model content

Therefore, this utility model easily occurs getting stuck for guide mechanism in prior art and the highest technical problem of guidance accuracy, it is therefore intended that provides a kind of and is difficult to get stuck and the guide mechanism of stamping die that guidance accuracy is high.

The guide mechanism of stamping die of the present utility model includes the some guide pins being located on stamping die, and be located on material to be processed can the corresponding some guide holes accommodating described guide pins, described guide hole be cross section be perforation and/or the hole slot of regular polygon.

Described guide pins can be traditional cylindrical guide pins, and the size of described guide hole is coincide with described guide pins, and described guide pins can be inscribed within described guide hole, ensures to guide degree of accuracy with this.In described guide pins inserts described guide hole, contacted with the face of guide pins by original circular guide hole and change point cantact into, greatly reduce contact area, and leave space in the both sides of contact point between described guide hole and described guide pins, certain shrinkage cavity relief area is provided, described guide pins can be avoided to be clamped by described material to be processed, it is easier to abjection.

The perforation of described regular polygon and/or hole slot are typically gone out by the punching operation stamping-out before being pre-set at stamping procedure.The perforation of described regular polygon and/or hole slot can be set to foursquare perforation and/or hole slot, also orthohexagonal perforation and/or hole slot can be set to, can preferably avoid guide pins to get stuck problem with this, the punch structure being simultaneously used for guide hole described in stamping-out is relatively easy, can effectively control processing cost.

Each angle of described regular polygon can be set to fillet, then the cross section being used for being punched out the drift of described guide hole is also the regular polygon with fillet, is difficult to defect, and the described regular polygon perforation being punched out and/or hole slot are also easier to cleaning.

In a preferred embodiment of the present utility model, described material to be processed is the material strip produced for stamping continuous die, and described guide hole can increase one procedure stamping-out by described punching continuous die and obtain before material strip is carried out punching press.Described guide hole can be equidistantly located in the middle of described material strip both sides or described material strip, described guide hole be cross section be the effect that foursquare perforation has relatively.

In a preferred embodiment of the present utility model, described guide pins both sides are provided with bullet ejector pin for material to be processed described in jack-up after punch process.

Positive progressive effect of the present utility model is: the guide mechanism of stamping die of the present utility model is in actual production, and the size of described guide hole is coincide with described guide pins, and guide pins can be inscribed within described guide hole, ensures to guide degree of accuracy with this.In described guide pins inserts described guide hole, contacted with the face of guide hole by original circular guide hole and change point cantact into, greatly reduce contact area, and leave space in contact point both sides between described guide hole and described guide pins, certain shrinkage cavity relief area is provided, described workpiece clamping guide pins can be avoided, after punching press, be easier to abjection.To sum up, the guide mechanism of stamping die of the present utility model can ensure guide degree of accuracy and described material to be processed can be made to deviate from from guide pins smoothly, effectively solves the problem that guide pins gets stuck, improves product quality and production efficiency.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the guide mechanism of stamping die of the present utility model.

Fig. 2 is the top view of the guide hole in Fig. 1.

Detailed description of the invention

Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to be fully understood from the purpose of this utility model, feature and effect.

Fig. 1 show the guide mechanism of the stamping die of a preferred embodiment of the present utility model, material strip 1 is provided with the guide hole 11 mutually coincideing with cylindrical guide pins 2, guide hole 11 is the square perforation with fillet, and cylindrical guide pins 2 is inscribed within guide hole 11, as shown in Figure 2；Guide pins 2 both sides are provided with bullet ejector pin 3 for being flicked by material strip 1.

In actual production, as a example by the production of punching continuous die, before material strip 1 is carried out punching press, it is previously provided with one guide hole blank operation, is that material strip 1 is punched out guide hole 11 by foursquare drift by cross section.And on the predeterminated position of the lower mold that guide pins 2 is fixed on stamping continuous die, play ejector pin 3 and be located at the both sides of guide pins 2.When the material strip 1 of the good guide hole 11 of stamping-out is transferred in upper mold preparation punching press, guide pins 2 is the most corresponding with the position of guide hole 11, guide pins 2 is inserted in guide hole 11 and is accurately positioned, then the upper mold of punching continuous die moves down and carries out punching press, after punching press completes, move in upper mold, play ejector pin 3 by material strip 1 upwards jack-up so that material strip 1 departs from guide pins 2.

Owing to guide hole 11 is foursquare perforation, cylindrical guide pins 2 is inserted and is inscribed within guide hole 11, can be accurately positioned, and only four contact points, compared to the face way of contact of original circular guide hole, it is substantially reduced contact area, additionally four of guide hole 11 leave space between fillet and guide pins, form certain shrinkage cavity relief area, clamp guide pins 2 after can avoiding material strip 1 punching press, after the upper mold of stamping continuous die is left, material strip 1 can be played ejector pin jack-up and be deviate from from guide pins 2 smoothly.

Claims (7)

1. the guide mechanism of a stamping die, it includes the some guide pins being located on stamping die, it is characterized in that, its also include being located on material to be processed can the corresponding some guide holes accommodating described guide pins, described guide hole be cross section be perforation and/or the hole slot of regular polygon.

2. the guide mechanism of stamping die as claimed in claim 1, it is characterised in that described regular polygon is square.

3. the guide mechanism of stamping die as claimed in claim 1, it is characterised in that described regular polygon is regular hexagon.

4. the guide mechanism of stamping die as claimed in claim 1, it is characterised in that described material to be processed is the material strip produced for stamping continuous die.

5. the guide mechanism of stamping die as claimed in claim 4, it is characterised in that described guide hole is equidistantly located in the middle of described material strip both sides or described material strip, described guide hole be cross section be foursquare perforation.

6. the guide mechanism of stamping die as claimed in claim 1, it is characterised in that each angle of described positive shape changeable is fillet.

7. the guide mechanism of stamping die as claimed in claim 1, it is characterised in that described guide pins both sides are provided with bullet ejector pin for material to be processed described in jack-up after punch process.