CN212884479U

CN212884479U - Stretching die for clutch belt pulley core

Info

Publication number: CN212884479U
Application number: CN202021213568.9U
Authority: CN
Inventors: 徐晓春; 詹义; 张含亮; 徐子轩
Original assignee: Suzhou Xuanchang Electromechanical Technology Co ltd
Current assignee: Suzhou Xuanchang Electromechanical Technology Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-04-06
Anticipated expiration: 2030-06-28

Abstract

The utility model provides a drawing die of a clutch belt pulley core, which comprises an upper die and a lower die, wherein a blank is arranged between the upper die and the lower die; the upper die comprises a convex-concave die base plate, a convex-concave die fixing plate and a convex-concave die; the lower die comprises a male die, a female die, a compression ring, a stress ring and a male die fixing block; the female die comprises a first female die, a second female die and a third female die; the male die is arranged on the male die fixing block and arranged in the female die; the material pushing block is arranged between the male die and the third female die and is arranged on the male die fixing block; the punch and die correspond to the material pushing block and the punch. The utility model discloses an adopt a pair of mould attenuation drawing to target in place for in the extrusion process of subsequent jumping-up with the blank coining shaping after the attenuation drawing, obtain the wheel core that needs in the production, simplified production processes, improved production efficiency, practiced thrift manufacturing cost for the enterprise simultaneously.

Description

Stretching die for clutch belt pulley core

Technical Field

The utility model relates to an automobile air conditioner electromagnetic clutch field especially relates to a tensile mould of clutch pulley core.

Background

The automobile air conditioner electromagnetic clutch is a power transmission device between an automobile engine and an automobile air conditioner compressor, and the automobile air conditioner compressor is driven by the automobile engine through the suction of the electromagnetic clutch. The belt pulley is used as a power transmission component of the electromagnetic clutch of the automobile air conditioner, and has great influence on the normal operation of the automobile air conditioner.

The belt pulley comprises a pulley core, a rotating wheel, a belt pulley and the like, wherein the conventional pulley core is mostly manufactured by hot forging of No. 10 steel, the single side of the inner diameter and the single side of the outer diameter of the pulley core are reserved with machining allowance of at least 1.5mm, and then a numerical control lathe is used for further machining until the pulley core is molded. The processing mode has the problems of high processing cost and long processing period.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the processing of wheel core can be simplified to the clutch belt pulley wheel core mould that proposes, reduces the processing cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a drawing die of a clutch belt pulley core comprises an upper die and a lower die, wherein a blank is arranged between the upper die and the lower die; the upper die comprises a convex-concave die base plate, a convex-concave die fixing plate and a convex-concave die; the male die and the female die are arranged on the lower end surface of the male die and the female die base plate; the convex-concave die fixing plate wraps the convex-concave die base plate and the convex-concave die; the lower die comprises a male die, a female die, a compression ring, a stress ring and a male die fixing block; the female die comprises a first female die, a second female die and a third female die; the third female die is arranged on the male die fixing block, the second female die is arranged on the upper end face of the third female die, and the first female die is arranged on the upper end face of the second female die; the stress ring wraps the female die; the compression ring is arranged on the stress ring, the inner peripheral ring of the compression ring is in contact with the first female die, and the compression ring is used for pressing the female die; the male die is arranged on the male die fixing block and arranged in the female die; the material pushing block is arranged between the male die and the third female die and is arranged on the male die fixing block; the male die and the female die correspond to the material pushing block and the male die.

Further, the distance between the inner side surface of the first concave die and the outer side surface of the convex die is a first distance, the distance between the inner side surface of the second concave die and the outer side surface of the convex die is a second distance, and the distance between the inner side surface of the third concave die and the outer side surface of the convex die is a third distance; the first distance, the second distance and the third distance are unequal in size.

Furthermore, the upper surface of the material pushing block is arc-shaped.

Further, the top of the male die is provided with a protruding part for punching corresponding to the blank.

Further, the pressure ring and the stress ring are fixedly connected through a first screw.

Further, the male die and the male die fixing block are fixedly connected through a second screw.

Further, the drawing die also comprises an upper template and a lower template; the upper template is arranged on the male die backing plate and the female die backing plate; the lower template is arranged below the male die fixing block.

Furthermore, screw through holes are respectively formed in two sides of the stress ring.

Compared with the prior art, the beneficial effects of the utility model are that: the thinning and stretching of the pair of dies are in place, the upper surface of the material pushing block provided with the stretching die is arc-shaped, the bottom of the blank can be stretched into the arc shape and used as a material for increasing the outer diameter of the wheel core, the blank after thinning and stretching in the subsequent upsetting and extruding process is subjected to fine pressing and forming, the wheel core with the single-side machining allowance of 0.15-0.35 mm required in production is obtained, the production process is simplified, the production efficiency is improved, and meanwhile, the production cost is saved for enterprises.

Drawings

Fig. 1 is a cross-sectional view of a drawing die according to an embodiment of the present invention;

fig. 2a is a schematic structural diagram of a workpiece after a blanking and stretching process according to an embodiment of the present invention;

fig. 2b is a schematic structural diagram of the blank after the punching process in fig. 2a according to an embodiment of the present invention;

fig. 2c is a schematic structural diagram of the as-formed part after the ironing process in fig. 2b according to an embodiment of the present invention;

fig. 2d is a schematic structural diagram of the formed part after the coining process in fig. 2c according to an embodiment of the invention.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Please refer to fig. 1 to fig. 2d in combination, the utility model provides a drawing die of a clutch pulley core, which comprises an upper die 1 and a lower die 2, wherein a blank 3 is arranged between the upper die 1 and the lower die 2.

The upper die 1 comprises a convex-concave die base plate 11, a convex-concave die fixing plate 12 and a convex-concave die 13; the punch-die 13 is arranged on the lower end surface of the punch-die backing plate 11; the punch-die fixing plate 12 wraps the punch-die backing plate 11 and the punch-die 13.

The lower die 2 comprises a male die 21, a female die 22, a pressure ring 23, a stress ring 24 and a male die fixing block 25; the female die 22 comprises a first female die 221, a second female die 222 and a third female die 223; the third concave die 223 is arranged on the male die fixing block 25, the second concave die 222 is arranged on the upper end face of the third concave die 223, and the first concave die 221 is arranged on the upper end face of the second concave die 222; the stress ring 24 wraps the female die 22; the press ring 23 is arranged on the stress ring 24, the inner peripheral ring of the press ring 23 contacts the first female die 221, and the press ring 23 is used for pressing the female die 22; the male die 21 is arranged on the male die fixing block 25, and the male die 21 is arranged in the female die 22; the material pushing block 26 is arranged between the male die 21 and the third female die 223, and the material pushing block 26 is arranged on the male die fixing block 25; the punch-die 13 corresponds to the pusher block 26 and the punch 21.

The embodiment of the utility model provides an in, when the closed back of upper die 1 and lower mould 2, punch-die 13 is located between terrace die 21 and the die 22, through punch-die 13, terrace die 21, die 22 and ejector pad 26 direct action on blank 3, targets in place the 3 attenuation drawing of blank, has replaced original 3 hot forging of blank and has stayed the machining allowance, then carries out machining's method, has simplified production processes, has promoted production efficiency, has brought economic benefits for the enterprise.

Further, the distance between the inner side surface of the first concave die 221 and the outer side surface of the convex die 21 is a first distance, the distance between the inner side surface of the second concave die 222 and the outer side surface of the convex die 21 is a second distance, and the distance between the inner side surface of the third concave die 223 and the outer side surface of the convex die 21 is a third distance; the first distance, the second distance and the third distance are unequal in size. In order to realize the thinning and stretching of the blank 3 to the position at one time, the female die 22 is divided into a first female die 221, a second female die 222 and a third female die 223, and the first female die, the second female die and the third female die are respectively matched with the male die 21 to act on the blank 3, so that the blank 3 is thinned and stretched to the required size. In actual production, the die 22 is not limited to be divided into three, and the die 22 can be divided into different numbers and different inner side surface shapes according to requirements.

Further, the upper surface of the pusher 26 is arc-shaped. The upper surface of the material pushing block 26 is arranged to be arc-shaped, so that the bottom of the blank 3 can be stretched into arc-shaped to form a primary formed part 3c shown in fig. 2 c; the bottom of the preform 3c may be used as a material for increasing the bulge of the outer diameter of the wheel core, so that the preform 3c is press-formed in the subsequent upsetting-extruding process to be a preform 3d as shown in fig. 2d, wherein the bulge includes the first convex portion 3d1 and the second convex portion 3d 2.

Further, the top of the punch 21 is provided with a projection 211, the projection 211 being used for punching the hole 31 corresponding to the blank 3. The blank 3 is obtained by punching a workpiece 3a shown in fig. 2a after the blanking and stretching step.

Further, the pressing ring 23 and the stress ring 24 are fixedly connected by a first screw 27. The male die 21 and the male die fixing block 25 are fixedly connected by a second screw 28.

Further, the stretching die also comprises an upper template 4 and a lower template 5; the upper template 4 is arranged on the male die backing plate and the female die backing plate 11; the lower template 5 is arranged below the male die fixing block 25.

Further, two sides of the stress ring 24 are respectively provided with a screw through hole 29. The stress ring 24 wraps the female die 22, provides the inward-shrinkage force for the female die 22, and prevents the female die 22 from being broken due to the outward-expansion force when the blank 3 is stretched. The screw through holes 29 connect the lower die 2 and the lower die plate 5 mainly through hexagon socket head cap screws, so that the firmness of the stretching die is better ensured.

The utility model discloses an adopt a pair of mould attenuation drawing to target in place to the upper surface of the ejector pad that sets up tensile mould is circular-arc, makes the bottom of blank can stretch for circular-arc, is used for the material that increases as the bulge of wheel core external diameter, makes in the subsequent jolting pole crowded process with the blank coining shaping after the attenuation drawing, obtains the wheel core that needs in the production, has simplified production processes, has improved production efficiency, has practiced thrift manufacturing cost for the enterprise simultaneously.

The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.

Claims

1. The drawing die for the wheel core of the clutch belt pulley is characterized by comprising an upper die and a lower die, wherein a blank is arranged between the upper die and the lower die;

the upper die comprises a convex-concave die base plate, a convex-concave die fixing plate and a convex-concave die; the male die and the female die are arranged on the lower end surface of the male die and the female die base plate; the convex-concave die fixing plate wraps the convex-concave die base plate and the convex-concave die;

the lower die comprises a male die, a female die, a compression ring, a stress ring and a male die fixing block; the female die comprises a first female die, a second female die and a third female die; the third female die is arranged on the male die fixing block, the second female die is arranged on the upper end face of the third female die, and the first female die is arranged on the upper end face of the second female die; the stress ring wraps the female die; the compression ring is arranged on the stress ring, the inner peripheral ring of the compression ring is in contact with the first female die, and the compression ring is used for pressing the female die; the male die is arranged on the male die fixing block and arranged in the female die; the material pushing block is arranged between the male die and the third female die and is arranged on the male die fixing block;

the male die and the female die correspond to the material pushing block and the male die.

2. The drawing die of claim 1, wherein the distance between the inner side of the first cavity block and the outer side of the male die is a first distance, the distance between the inner side of the second cavity block and the outer side of the male die is a second distance, and the distance between the inner side of the third cavity block and the outer side of the male die is a third distance; the first distance, the second distance and the third distance are unequal in size.

3. The drawing die of claim 1, wherein the upper surface of the plunger is radiused.

4. Drawing die according to claim 1, characterised in that the top of the male die is provided with a projection for punching a hole corresponding to the blank.

5. The drawing die of claim 1 wherein the compression ring and the stress ring are fixedly attached by a first screw.

6. The drawing die of claim 1, wherein the male die and the male die holding block are fixedly connected by a second screw.

7. The drawing die of claim 1, wherein the drawing die further comprises an upper die plate and a lower die plate; the upper template is arranged on the male die backing plate and the female die backing plate; the lower template is arranged below the male die fixing block.

8. The drawing die of claim 1, wherein the stress ring is provided with screw through holes at both sides thereof, respectively.