CN201287179Y

CN201287179Y - Three-mode three-punch multistage cold former

Info

Publication number: CN201287179Y
Application number: CNU2008202022274U
Authority: CN
Inventors: 陈海平
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-22
Filing date: 2008-10-22
Publication date: 2009-08-12
Anticipated expiration: 2018-10-22

Abstract

The utility model discloses a three-die-three-blow multi-stage cold header, which comprises a feeding mechanism, a material clamping mechanism, a material cutting mechanism and a material returning mechanism; the belt pulley of a motor and a V-belt drive an upper crank shaft to rotate; a connecting rod hinged on the upper crank shaft drives a punch to move reciprocally; the upper crank shaft gear drives a lower crank shaft to rotate; an upper gearwheel is fixedly connected at one end of the upper crank shaft; an eccentric hole is formed on the upper gearwheel; the connecting rod is hinged on the shaft of the eccentric hole to drive the material returning mechanism; a connecting rod hinged on a lower crank shaft drives the material returning mechanism directly; a transmission eccentric disc is fixed at one end of the lower crank shaft; and the eccentric disc drives the feeding mechanism through the connecting rod. In the utility model, the eccentric transmission of the crank shaft is adopted for returning the material, so that the transmission loss is small; even the acting force is large during the process of returning, transmission error on other parts can not be caused. Therefore, when the integral machine is used for producing products, the running of the equipment is stable, and the rejection rate of the products is low. The structure of the material clamping box is greatly improved, so that the working is stable and the motion errors are less.

Description

Three moulds three are towards multistage cold former

Technical field:

The utility model relates to the press technical field, more specifically to a kind of multistage cold former.

Background technology:

Multistage cold former, make various rivets or other similar products with the cold-heading method, each goods forms through three cold-headings, the raw material of goods are steel or the metal wire rods such as aluminium, copper through cold-drawn, its ultimate strength σ b=50 kilogram/millimeter, wire surface should be smooth, and pore, folding line, crackle or other defective must not be arranged, and the vestige of oxide skin mustn't be arranged.

Existing multistage cold former, as shown in Figure 1, its transmission principle is that motor 101 passes through belt pulley 102,103 and V belt drives upward bent axle 111 rotations, and is reciprocating through connecting rod 112 driving drifts 105.Last bent axle 111 rotates by gear driven lower shaft 104, drives feeding clip mechanism 107, unloading mechanism 108, feed mechanism 109 by lower shaft 104 by umbrella tooth and power transmission shaft 106; Drive cutting machine structures 110 by following bent axle 104.

Its weak point is, 1, its unloading mechanism 108 adopts the transmission of umbrella tooth, adopt same power transmission shaft with the motion of material folding clamp material, big owing to active force when the material returned, cause the vibrations of material folding case power transmission shaft, the material folding campaign is inaccurate, error occurs when easily causing workpiece to move to another mould by a mould and causes product rejection, material folding case to damage.2, the material folding case material handling shaft of feeding clip mechanism 107 adopts cantilever beam, occurs error when motion easily, and when the material folding folder moved on to another mould with workpiece by a mould, workpiece came off easily, causes the product rejection of production.

The utility model content:

The utility model is exactly inaccurate at existing multistage cold former material folding campaign, error occurs when easily causing workpiece to move to another mould and cause product rejection, the fragile deficiency of material folding case by a mould, and three moulds three that a kind of new construction is provided are towards multistage cold former, its power transmission loss is few, can not cause other partly error of transmission, when complete machine was produced product, equipment operation was stable, and the product percent defective is low.

Technology solution of the present utility model is as follows:

Three moulds three are towards multistage cold former, comprise feeding mechanism, feeding clip mechanism, cutting machine structure, unloading mechanism, motor pulley and V belt drive goes up the bent axle rotation, and the connecting rod driving drift that is hinged on the bent axle is reciprocating, last crankshaft toothed wheel drives down, and bent axle rotates

Last bent axle one end is fixedly connected with gear wheel, has eccentric orfice, rod hinge connection drive cutting machine structure on the axle of this eccentric orfice on the last gear wheel;

Articulated linkage directly drives unloading mechanism on the following bent axle;

One end of following bent axle is fixed with the transmission eccentric disc, and eccentric disc drives feeding mechanism by connecting rod;

The umbrella tooth engaged transmission feeding clip mechanism of umbrella tooth on the following bent axle and power transmission shaft.

The structure of described feeding clip mechanism is, the connecting rod clamping limb that drives right female folder that moves around swings back and forth, be fixed with back-moving spring in the material folding case, the stress of back-moving spring acts on the clamping limb of the female folder in a left side, the female folder in a left side, right female folder all be hinged in the material folding case and corresponding position on.

Outstanding effect of the present utility model is:

(1), old structure three moulds three adopt the transmission of umbrella tooth towards multistation machine unloading mechanism, adopt same power transmission shaft with the motion of material folding clamp material, big owing to active force when the material returned, cause the vibrations of material folding case power transmission shaft, the material folding campaign is inaccurate, error occurs when causing workpiece to move to another mould by a mould and cause product rejection, the material folding case damages.The crankshaft eccentric transmission is adopted in the utility model material returned, and by main crankshaft, direct geared drives crankshaft rotating down, power transmission loss is few, though active force is big when the material returned, can not cause other partly error of transmission, therefore when complete machine was produced product, equipment operation was stable, and the product percent defective is low.

(2), the utility model has carried out significant improvement aspect the material folding box structure, more stable when material folding, old material folding case material handling shaft adopts cantilever beam, occurs error when motion easily, when the material folding folder moves on to another mould with workpiece by a mould, workpiece comes off easily, causes the product rejection of production, and new material folding box structure material handling shaft does not adopt cantilever beam, the material handling shaft rigidity is strengthened greatly, and structure is compact more, and stable when work, kinematic error is few.

Description of drawings:

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

Fig. 1 is the transmission principle schematic diagram of existing three moulds three towards multistage cold former;

Fig. 2 is the structural representations of the utility model three moulds three towards multistage cold former;

Fig. 3 is the structural representation of the utility model feeding clip mechanism.

The specific embodiment:

The following stated only is preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.

See shown in Fig. 2,3, three moulds three are towards multistage cold former, comprise feeding mechanism 13, feeding clip mechanism 9, cutting machine structure 15, unloading mechanism 12, motor 1 belt pulley 2,3,4 and V belt drive goes up bent axle 10 rotations, the connecting rod 6 driving drifts 7 that are hinged on the bent axle 10 are reciprocating, and bent axle 5 rotates under last bent axle 10 gear drivens;

Last bent axle 10 1 ends are fixedly connected with gear wheel 20, have axle that eccentric orfice, connecting rod 16 be hinged on this eccentric orfice on the last gear wheel 20 and go up and drive cutting machine structure 15;

Articulated linkage 11 directly drives unloading mechanism 12 on the following bent axle 5;

One end of following bent axle 5 is fixed with transmission eccentric disc 17, and eccentric disc 17 drives feeding mechanism 13 by connecting rod 14;

The umbrella tooth engaged transmission feeding clip mechanism 9 of umbrella tooth on the following bent axle 5 and power transmission shaft 8.

The structure of feeding clip mechanism 9 is, connecting rod 93 clamping limb that drives right female folder 94 that moves around swings back and forth, be fixed with back-moving spring 92 in the material folding case 91, the stress of back-moving spring 92 acts on the clamping limb of the female folder 95 in a left side, the female folder 95 in a left side, right female folder 94 all be hinged in the material folding case 91 and corresponding position on.

Operation principle: unloading mechanism and feeding clip mechanism adopt same through-drive in the prior art, the utility model material returned drives axle and adopts upward crankshaft eccentric transmission, adopt the disalignment transmission with feeding clip mechanism, eliminated material returned active force greatly to the influence of feeding clip mechanism, power transmission loss is few, though active force is big when the material returned, but can not cause other partly error of transmission, therefore when complete machine was produced product, equipment operation was stable, and the product percent defective is low.

The utility model has carried out significant improvement aspect the material folding box structure, more stable when material folding, old material folding case material handling shaft adopts cantilever beam, occurs error when motion easily, when the material folding folder moves on to another mould with workpiece by a mould, workpiece comes off easily, causes the product rejection of production, and new material folding box structure material handling shaft does not adopt cantilever beam, the material handling shaft rigidity is strengthened greatly, and structure is compact more, and stable when work, kinematic error is few.As shown in Figure 3, the main mould 18 that cutting machine structure 15 sends is when connecting rod 93 moves around driving, the female folder 95 in a left side, right female folder 94 can be finished clamping, and action of releasing is utilized back-moving spring, when the female folder 95 in a left side was not stressed, back-moving spring 92 allowed the female folder in a left side reset, and carries out next step work.

Claims

1, three moulds three are towards multistage cold former, comprise feeding mechanism (13), feeding clip mechanism (9), cutting machine structure (15), unloading mechanism (12), motor (1) belt pulley (2), (3), (4) and V belt drive goes up bent axle (10) rotation, connecting rod (6) the driving drift (7) that is hinged on the bent axle (10) is reciprocating, bent axle (5) rotates under last bent axle (10) gear driven, it is characterized in that:

Last bent axle (10) one ends are fixedly connected with gear wheel (20), have axle that eccentric orfice, connecting rod (16) be hinged on this eccentric orfice on the last gear wheel (20) and go up and drive cutting machine structure (15);

Following bent axle (5) is gone up articulated linkage (11) and is directly driven unloading mechanism (12);

One end of following bent axle (5) is fixed with transmission eccentric disc (17), and eccentric disc (17) drives feeding mechanism (13) by connecting rod (14);

The umbrella tooth engaged transmission feeding clip mechanism (9) of umbrella tooth on the following bent axle (5) and power transmission shaft (8).

2, three moulds three according to claim 1 are towards multistage cold former, it is characterized in that: the structure of feeding clip mechanism (9) is, connecting rod (93) clamping limb that drives right female folder (94) that moves around swings back and forth, be fixed with back-moving spring (92) in the material folding case (91), the stress of back-moving spring (92) acts on the clamping limb of the female folder in a left side (95), the female folder in a left side (95), right female folder (94) all be hinged in the material folding case (91) and corresponding position on.