CN204262161U - Punching type strain clamp pre-stretched tape flange die - Google Patents

Abstract

The utility model provides a kind of punching type strain clamp pre-stretched tape flange die, there are upper die and lower die, patrix lower end is installed with punch, the upper end of counterdie is installed with guide plate, the region of counterdie in guide plate is provided with die slidably, die is installed in the upper end of the push rod through counterdie, and the lower end of push rod is installed on flexible member; It is characterized in that: die upper surface is provided with the groove that bottom is the V-type of arc transition, the two side of groove is 40 degree of angles, the groove walls at the two ends of groove is launched to extend laterally, and the die upper surface being positioned at the both sides of groove is respectively equipped with a hangers Internal hole positioning pin; The lower surface of punch has with the position of above-mentioned groove and shape the projection that top is the V-type of arc transition accordingly, and punch is provided with flange briquetting in the both sides of V-type projection.The utility model makes strain clamp blank effectively can be stamped shaping but do not damaged by excessive punching press.

Description

Punching type strain clamp pre-stretched tape flange die

Technical field

The utility model belongs to a kind of diel, particularly relates to a kind of diel of producing strain clamp.

Background technology

Strain clamp hangs wire to strain insulator string or shaft tower and bears the wire clamp of wire tension, for fixing cord, to bear wire tension, and hangs wire to the gold utensil in strain insulator-string group or shaft tower.

Strain clamp is used for corner, continues, and the connection of terminal.

Current strain clamp generally uses casting, the strain clamp of casting structurally and casting technique exists a lot of shortcoming:

Original strain clamp adopts casting production process, only need make one meets product design document, meet the model of Casting Technology condition, its model is single, easy making, but cast article dimensional accuracy is low, rough surface, moulding mismatch, misalignment and the burr of generation be more, especially the drop of wire casing internal cause produces exoncoma, misalignment have impact to weighing wire wounded.

Casting relates to multiple operations such as moulding, melting, cast, annealing, produces special process, and human factor is comparatively large, is difficult to select ripe refining operator, and product quality fluctuation is comparatively large, and present young man is unwilling to be engaged in the numerous work of such spy.

The pouring and riser systems of casting accounts for product substance about 35%, and process yield is low, although the material of dead head can be recycled, add raw-material process loss, melting turn increases energy loss again.

Cast article relates to 10 multiple working procedures, and the production cycle is longer, and cast article comprehensive qualified rate is generally between 80% to 85%, and qualification rate is low correspondingly adds production cost.

Cast product per ton to disappear coal consumption 660kg, the flue dust that production process produces has pollution to air.

And if adopt punch forming, then have dimensional accuracy high, constant product quality, operation is few, pollutes low advantage.

If Fig. 1-1,1-2,1-3,1-4,1-5 is stamping forming strain clamp, this part overall structure is arc, and by being curve-like bottom the wire casing 100 of electric wire, wire casing 100 straight top, plane position flange is the hanging seat 101 connecting U-bolt.The upper lobes of the crooked position 105 of wire casing 100 is bracing wire hangers 102, and the endoporus 103 of hangers 102 and outer rim 104 all want flange.(significant points, to improve the tensile strength of wire clamp).The two ends wire inlet-outlet of the wire casing 100 of wire clamp will be pressed into horn mouth 106 (preventing the wire that weares and teares).This part overall geometry is comparatively complicated, adopts steel plate entirety to be stamped to form, has certain difficulty from Design of Dies and processing technology aspect.

The blanking of this part, punching, hangers hole and flangikng belong to general Sheet Metal Forming Technology, when after blanking punched operation, the blanking and punching obtained, the blank of hangers hole flanging are as shown in Figure 2, and further wire casing drawing band hanging seat flange, wire casing bottom curve and two ends horn mouth: and hangers bends U-shaped, also wants the arc of crooked position 105 simultaneously.The disposable drawing in these positions, flange, brake forming just have certain difficulty.

Utility model content

The utility model provides a kind of punching type strain clamp pre-stretched tape flange die, its objective is the shortcoming solving prior art and exist, makes strain clamp blank effectively can be stamped shaping but do not damaged by excessive punching press.

The utility model solves the technical scheme that its technical problem adopts:

Punching type strain clamp pre-stretched tape flange die, there are upper die and lower die, patrix lower end is installed with punch, the upper end of counterdie is installed with guide plate, the region of counterdie in guide plate is provided with die slidably, die is installed in the upper end of the push rod through counterdie, and the lower end of push rod is installed on flexible member; It is characterized in that: die upper surface is provided with the groove that bottom is the V-type of arc transition, the two side of groove is 40 degree of angles, the groove walls at the two ends of groove is launched to extend laterally, and the die upper surface being positioned at the both sides of groove is respectively equipped with a hangers Internal hole positioning pin; The lower surface of punch has with the position of above-mentioned groove and shape the projection that top is the V-type of arc transition accordingly, and punch is provided with flange briquetting in the both sides of V-type projection.

Usefulness of the present utility model is:

The utility model mould is shaping to multiple position, thus reaches wire casing stretching, wire casing bottom curve shape, wire casing two ends are pressed into horn mouth, bending totally five positions of wire casing top link plate flange, hangers are disposable to be stamped to form, and namely improves production efficiency, in turn ensure that product quality.But in one-time formed scheme wire casing part being adopted again to prestretched simultaneously, namely not the disposable degree of depth being stretched to final products yet, but prestretching is stretched into a V-type groove, the next stamping procedure such as final molding carries out, like this, flow of metal disposal molding can being avoided to bring is excessive and make the adverse consequences of material inside organization structure destroy product mechanical performance.Counterdie is provided with kicker, the elastic ejection device of the composition such as spring, thus can push down workpiece when stretching, and can immediately be ejected in die by workpiece.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1-1 is the side view of stamping forming strain clamp;

Fig. 1-2 is that the C of Fig. 1-1 is to partial view;

Fig. 1-3 is A-A sectional views of Fig. 1-1;

Fig. 1-4 is B-B profiles of Fig. 1-1;

Fig. 1-5 is D-D sectional views of Fig. 1-1;

Fig. 2 is the blank obtained after blanking;

Fig. 3-1 is the utility model die side view;

Fig. 3-2 is counterdie top views;

Fig. 4-1 is the side view of blank after the utility model punching press;

Fig. 4-2 is that the E of Fig. 4-1 is to partial view;

Fig. 4-3 is F-F profiles of Fig. 4-1.

Detailed description of the invention

As Fig. 3-1, shown in 3-2, the utility model has patrix, patrix comprises the die shank 1 be connected successively from top to bottom, cope match-plate pattern 2, upper die plate 3, pressuring template 4, punch 5, the utility model also has counterdie, counterdie has pressure foot 10, push rod 13 is through pressure foot 10, the lower end of push rod 13 is installed on flexible member 11, the top of push rod 13 sets firmly lower fetal membrane 8, baffle plate 9 is set firmly above lower fetal membrane 8, die 6 is set firmly above baffle plate 9, pressure foot 10 is installed with lower fetal membrane backing plate 7 at the periphery of lower fetal membrane 8, the top of lower fetal membrane backing plate 7 is installed with guide plate 12, like this, die 6 can slide up and down in the region in guide plate 12.

The two side that die 6 upper surface is provided with the groove 100 that bottom is the V-type of arc transition " ＇; groove 100 " ＇ is 40 degree of angles, groove 100 " groove walls 106 at the two ends of ＇ " ＇ launches laterally to extend thus forms horn mouth shape (corresponding to horn mouth 106), is positioned at groove 100 " the die upper surface of the both sides of ＇ is respectively equipped with a hangers Internal hole positioning pin 103 " ＇ (position and size correspond to endoporus 103); " position of ＇ and shape have the projection that top is the V-type of arc transition accordingly, and punch 5 is provided with flange briquetting (position and size correspond to outer rim 104) in the both sides of V-type projection for lower surface and the above-mentioned groove 100 of punch 5.

Like this, when Fig. 3-1,3-2 mold work, the blank that blanking shown in Fig. 2 is good is placed in guide plate 12 inner position that counterdie is arranged above, along with patrix is descending, by punch 5, die 6, the elastic device 11 of lower loose tool 8 and binder, de-part, prestretching is ploughed deeply the workpiece punching press on limit out by acting in conjunction, forms Fig. 4-1, the stamping parts shown in 4-2,4-3.

Also be, the V-type projection of punch 6 and the V-type groove 100 " ＇ coordinates; part 100 ＇ of the blank of Fig. 2 is struck out the V-type groove 100 that a bottom is arc transition " of die 5, and V-type groove 100 " the angle of two sidewalls be 40 degree, part 106 ＇ at the two ends of blank is by groove walls 106, and " part of ＇ strikes out the horn mouth 106 of Fig. 4-2.As Fig. 4-3, part 101 ＇ of blank is at V-type groove 100 " both sides and form the hanging seat 101 of Fig. 4-2; part 102 ＇ of blank and part 103 ＇ forms the endoporus 103 of the hangers 102 of Fig. 4-1, and part 104 ＇ of blank is pressed into the outer rim 104 of Fig. 4-1 and Fig. 4-3 by the flange briquetting of punch 5.

Stamping parts shown in such Fig. 4-1,4-2,4-3 is compared with the strain clamp finished product of Fig. 1-1,1-2,1-3,1-4,1-5, although crooked position 105 is not shaping, V-type groove 100 " the angle of two sidewalls be greater than the angle of two sidewalls of wire casing 100; but other structures are all molded; as long as just can reach the shape of final products again through an operation, and this mould to turn avoid the one time punching molded flow of metal that may bring from blank to final products excessive and make the adverse consequences of material inside organization structure destroy product mechanical performance.

Claims (1)

1. punching type strain clamp pre-stretched tape flange die, there are upper die and lower die, patrix lower end is installed with punch, the upper end of counterdie is installed with guide plate, the region of counterdie in guide plate is provided with die slidably, die is installed in the upper end of the push rod through counterdie, and the lower end of push rod is installed on flexible member; It is characterized in that: die upper surface is provided with the groove that bottom is the V-type of arc transition, the two side of groove is 40 degree of angles, the groove walls at the two ends of groove is launched to extend laterally, and the die upper surface being positioned at the both sides of groove is respectively equipped with a hangers Internal hole positioning pin; The lower surface of punch has with the position of above-mentioned groove and shape the projection that top is the V-type of arc transition accordingly, and punch is provided with flange briquetting in the both sides of V-type projection.