CN202037256U

CN202037256U - U-shaped iron stretching die

Info

Publication number: CN202037256U
Application number: CN2011201291449U
Authority: CN
Inventors: 高建华; 王志强
Original assignee: NINGBO XIANGYANG TANKESITE ELECTRONICS CO Ltd
Current assignee: NINGBO XIANGYANG TANKESITE ELECTRONICS CO Ltd
Priority date: 2011-04-20
Filing date: 2011-04-20
Publication date: 2011-11-16
Anticipated expiration: 2021-04-20

Abstract

The utility model discloses a U-shaped iron stretching die which comprises an upper die plate (1), a concave die (2), a convex die (4), a lifting and pressing plate (5), a lower die plate (7) and a guidng column (6), wherein the lifting and pressing plate (5) and the convex die (4) are connected to the lower die plate (7); the concave die (2) is connected to the upper die plate (1); one end of the guide column (6) is connected with the lower die plate (7), and the other end is in sliding fit with the upper die plate (1); an upper limit groove (3) is arranged at the notch of the concave die (2); and a lower limit groove (8) is arranged at the matching part of the lifting and pressing plate (5) and the convex die. By adopting the structure, the flanging of the U-shaped iron is limited in the stretching process, and the partial plastic deformation of the material is generated. Therefore, the material can flow to the fillet of the flanging, the forming precision of the fillet plate of the U-shaped iron is ensured, and the stretching and forming of the thick material are not needed; in addition, the production cost can be reduced.

Description

The drawing die of U iron

Technical field

The utility model relates to the machine die field, specifically is a kind of drawing die of the U iron in the stretching process of making loudspeaker U iron.

Background technology

Loudspeaker are a kind of electroacoustic converting members, and it converts the sound signal of telecommunication to sound.Car horn generally comprises U iron or T iron, and wherein, U iron generally has the interior concave space that can place magnetite, during use magnetite and voice coil loudspeaker voice coil are placed in the interior concave space of U iron, then with the U ferropexy on the basin frame.Usually, U iron is by the die drawn moulding, and the U iron drawing die of prior art comprises cope match-plate pattern, punch, die, lower bolster and guide pillar, punch is fixed on the lower bolster, die is fixed on the cope match-plate pattern, and an end of guide pillar is connected with lower bolster, and the other end and cope match-plate pattern are slidingly matched.But, there is following shortcoming in the U swage tool of this structure: because the flange of U iron has individual arc section, the arc chord angle of this arc section is less, the U swage tool of prior art to this flange all without limits, promptly the flange of U iron is free state, like this, usually use thicker material and carry out tension-thining, just can reach the filling of arc chord angle, therefore, can increase production cost; And, also to increase a trimming at last, make arc section reach requirement.

The utility model content

Technical problem to be solved in the utility model is, provides a kind of need not can make the flange arc section of U iron reach desired formed precision with thick material, thus the drawing die of the U iron that reduces production costs.

For solving the problems of the technologies described above, the drawing die of the U iron that the utility model provides, comprise cope match-plate pattern, die, punch, lift pressing plate, lower bolster and guide pillar, describedly lift pressing plate and punch is connected on the lower bolster, described die is connected on the cope match-plate pattern, and an end of described guide pillar is connected with lower bolster, and the other end and cope match-plate pattern are slidingly matched, the indent of described die has upper limit position groove, and described punch-die cooperation place of lifting pressing plate has the lower limit groove.

After adopting above structure, the utility model compared with prior art has following advantage: because die has upper limit position groove and lower limit groove with lifting on the pressing plate respectively in the flange cooperation place of U iron, like this, the flange of U iron is subjected to position-limiting action in drawing process, make material produce local plastic deformation, like this, can make the moving fillet place of materials flow to flange, thereby guarantee the formed precision of U iron fillet sheet, also need not to use thick material to come drawing and forming, therefore, can reduce production costs.

As improvement, described lower bolster below is connected with pressure-regulating device, described pressure-regulating device simultaneously with lift pressing plate and be connected.Described pressure-regulating device comprises studs, nut, lower plate, cushion, train wheel bridge and connecting rod; One end of described connecting rod is threaded with lifting pressing plate, and the other end is connected with train wheel bridge, polished rod and lower bolster matched in clearance in the middle of the connecting rod; One end of described studs is threaded with lower bolster after passing lower plate, cushion and train wheel bridge successively, and the other end and nut are also tight.Described cushion is a rubber blanket.Described nut is two.After adopting this structure, owing to below lower bolster, connected pressure-regulating device, and pressure-regulating device with lift pressing plate and be connected, make and lift pressing plate the active force of U iron is had to a certain degree adjustment, therefore, driving die at cope match-plate pattern falls in the process of matched moulds, lift pressing plate U iron is had certain cushioning effect, like this, avoid U iron is produced destruction, promptly avoid making U iron root to produce the phenomenon of cracking, improve the qualification rate of product; And the structure of rubber blanket also makes this device simpler, and cost is lower; In addition,, have locking effect, make connection more firm with two nuts and tight.

Description of drawings

Fig. 1 is the stretching front and back state diagram of U iron;

Fig. 2 is the structural representation of the drawing die of the utility model U iron.

Wherein, 1, cope match-plate pattern; 2, die; 3, upper limit position groove; 4, punch; 5, lift pressing plate; 6, guide pillar; 7, lower bolster; 8, lower limit groove; 9, connecting rod; 10, studs; 11, nut; 12, train wheel bridge; 13, cushion; 14, lower plate.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.

By the structural representation of the drawing die of the utility model U iron illustrated in figures 1 and 2 as can be known, it comprises cope match-plate pattern 1, die 2, punch 4, lifts pressing plate 5, lower bolster 7 and guide pillar 6, describedly lift pressing plate 5 and punch 4 is connected on the lower bolster 7, described die 2 is connected on the cope match-plate pattern 1, one end of described guide pillar 6 is connected with lower bolster 7, and the other end and cope match-plate pattern 1 are slidingly matched.The indent of described die 2 has upper limit position groove 3, and described punch-die cooperation place of lifting pressing plate 5 has lower limit groove 8.

Described lower bolster 7 belows are connected with pressure-regulating device, described pressure-regulating device simultaneously with lift pressing plate 5 and be connected.Described pressure-regulating device comprises studs 10, nut 11, lower plate 14, cushion 13, train wheel bridge 12 and connecting rod 9.One end of described connecting rod 9 is threaded with lifting pressing plate 5, and the other end is connected with train wheel bridge 12, polished rod and lower bolster 7 matched in clearance in the middle of the connecting rod 9.One end of described studs 10 passes lower plate 14, cushion 13 and train wheel bridge 12 backs successively and is threaded with lower bolster 7, and the other end and nut 11 are also tight.

In the present embodiment, described cushion 13 is a rubber blanket; The quantity of described nut 11 is two.

The utility model is not limited to above-described structure, and wherein cushion 13 can also adopt the structure of spring; Connecting rod 9 can be welding with being connected of train wheel bridge 12, also can be to be threaded; Or the like.

More than these variations all belong within the protection domain of the present utility model.

Claims

1. the drawing die of a U iron, comprise cope match-plate pattern (1), die (2), punch (4), lift pressing plate (5), lower bolster (7) and guide pillar (6), describedly lift pressing plate (5) and punch (4) is connected on the lower bolster (7), described die (2) is connected on the cope match-plate pattern (1), one end of described guide pillar (6) is connected with lower bolster (7), the other end and cope match-plate pattern (1) are slidingly matched, it is characterized in that: the indent of described die (2) has upper limit position groove (3), and described punch cooperation place of lifting pressing plate (5) has lower limit groove (8).

2. the drawing die of U iron according to claim 1 is characterized in that: described lower bolster (7) below is connected with pressure-regulating device, described pressure-regulating device simultaneously with lift pressing plate (5) and be connected.

3. the drawing die of U iron according to claim 2 is characterized in that: described pressure-regulating device comprises studs (10), nut (11), lower plate (14), cushion (13), train wheel bridge (12) and connecting rod (9); One end of described connecting rod (9) is threaded with lifting pressing plate (5), and the other end is connected with train wheel bridge (12), polished rod and lower bolster (7) matched in clearance in the middle of the connecting rod (9); One end of described studs (10) passes lower plate (14), cushion (13) and train wheel bridge (12) back successively and is threaded with lower bolster (7), and the other end and nut (11) are also tight.

4. the drawing die of U iron according to claim 3 is characterized in that: described cushion (13) is a rubber blanket.

5. the drawing die of U iron according to claim 3 is characterized in that: described nut (11) is two.