CN114393050A

CN114393050A - Ultra-thin aluminum shell cold extrusion device

Info

Publication number: CN114393050A
Application number: CN202210127535.XA
Authority: CN
Inventors: 童伟特; 陈平; 陈志扬; 李朝峰
Original assignee: Zhejiang Zz Electric Co ltd
Current assignee: Zhejiang Zz Electric Co ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-04-26

Abstract

The invention provides an ultrathin aluminum shell cold extrusion device which comprises a machine body, a support rod arranged on the machine body, a support plate arranged on the support rod, a guide shaft penetrating through the support plate, a connecting plate arranged on the guide shaft, a stamping rod arranged on the connecting plate, a driving piece arranged on the support plate and a fixed seat arranged on the machine body, wherein the support rod is arranged on the machine body; the machine body is provided with a feeding device, and the stamping rod is provided with a discharging device; the blanking device comprises a connecting rod arranged on the connecting plate, a push disc arranged on the connecting rod and a demoulding assembly arranged on the connecting plate. By arranging the blanking device and the feeding device, the blanking device can automatically complete blanking and the problem of difficult blanking is solved; on the basis of connecting the pushing disc through the connecting rod, still set up drawing of patterns subassembly on the connecting plate, so can be under the effect of pushing disc at the work piece of accomplishing the processing, after preliminary and punching press pole are separated, take off the work piece completely with the help of drawing of patterns subassembly.

Description

Ultra-thin aluminum shell cold extrusion device

Technical Field

The invention belongs to the technical field of aluminum shell processing, and particularly relates to an ultrathin aluminum shell cold extrusion device.

Background

Cold extrusion is a process in which a metal blank is placed in a cold extrusion die cavity and pressure is applied to the blank by a male die fixed on a press machine at room temperature to plastically deform the metal blank to produce a part. The method has remarkable effect on the processing of the cylindrical thin-wall aluminum shell.

In the existing processing technology, a cylinder drives a stamping rod to extrude a workpiece, but the workpiece is loaded and unloaded more complexly, and the workpiece is loaded and unloaded manually. Particularly, in the blanking process, although the stamping rod can penetrate through the disc-shaped push disc, the cylindrical workpiece is pushed down when the stamping rod is upwards every time; however, in this way, a relatively large stroke of the ram rod is required; and the aluminium casing after the extrusion is accomplished, its inner wall is very thin, and this diameter that just needs the hole on the pushing tray is identical with the diameter of punching press pole, and the tip of punching press pole retracts to the downthehole of pushing tray like this, when rocking easily, leads to push rod tip and the overhead inner wall butt of pushing tray, the mar appears to lead to the work piece quality poor.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the ultrathin aluminum shell cold extrusion device with convenient demoulding.

In order to achieve the purpose, the invention adopts the following technical scheme: a cold extrusion device for an ultrathin aluminum shell comprises a machine body, a support rod arranged on the machine body, a support plate arranged on the support rod, a guide shaft penetrating through the support plate, a connecting plate arranged on the guide shaft, a stamping rod arranged on the connecting plate, a driving piece arranged on the support plate and a fixed seat arranged on the machine body; the machine body is provided with a feeding device, and the stamping rod is provided with a discharging device; the blanking device comprises a connecting rod arranged on the connecting plate, a push disc arranged on the connecting rod and a demoulding assembly arranged on the connecting plate.

By arranging the blanking device and the feeding device, the blanking device can automatically complete blanking and the problem of difficult blanking is solved; on the basis of connecting the pushing disc through the connecting rod, still set up drawing of patterns subassembly on the connecting plate, so can be under the effect of pushing disc at the work piece of accomplishing the processing, after preliminary and punching press pole are separated, take off the work piece completely with the help of drawing of patterns subassembly.

Optionally, the demolding assembly comprises a cavity arranged on the stamping rod, an air valve arranged on the cavity, a connecting cavity arranged on the connecting plate, an air inlet channel communicated with the connecting cavity, and a push rod arranged on the supporting plate; wherein, the push rod with the intake duct aligns each other, the connecting chamber with the cavity intercommunication. The demoulding assembly provided by the invention can release high-pressure gas to the end part of the stamping rod when the stamping rod moves upwards, so that the workpiece can be removed by means of the high-pressure gas after the pushing disc preliminarily removes the workpiece.

Optionally, the feeding device includes a fixed guide plate disposed on the machine body, a fixed cylinder disposed on the fixed plate, a sliding push plate disposed on the fixed plate, a driving cylinder connected to the sliding push plate, and an opening disposed on the fixed cylinder; the one end of slip push pedal is the arc setting, and the other end is provided with the baffle, wear to be equipped with the guide bar on the baffle, the guide bar links to each other with fixed baffle to the cover is equipped with the spring on the guide bar.

Optionally, an annular cylindrical cavity is arranged in the fixed cylinder, and a pressing device is arranged on the fixed cylinder; the compressing device comprises a fixed ring plate arranged on the fixed cylinder, a guide pressure rod penetrating through the fixed ring plate, a pressing sheet arranged on the guide pressure plate, a first spring arranged on the fixed ring plate, a connecting ring plate arranged on the guide pressure rod and a pressure adjusting assembly arranged on the guide pressure rod; the connecting ring plate is arranged on the guide pressure rod, an annular groove is formed in the pressing sheet, and the end portion of the guide pressure rod is inserted into the annular groove.

Optionally, the pressure adjusting assembly is associated with the pressing plate, and the pressure adjusting assembly includes a second spring connected to the pressing plate, an adjusting ring plate connected to the second spring, a connecting frame disposed on the adjusting ring plate, an abutting ring plate connected to the connecting frame, a third spring sleeved on the guide pressure rod, an abutting frame abutting against the abutting ring plate, a fourth spring connected to the abutting frame, and a power assembly disposed on the fixing ring plate; one end of the second spring is connected with the adjusting ring plate, and the other end of the second spring is connected with the pressing sheet; and one end of the third spring is connected with the plate on the guide pressure rod, and the other end of the third spring is connected with the abutting annular plate.

Optionally, the power assembly includes a hydraulic block disposed on the fixed ring plate, a pressure channel disposed on the hydraulic block, a pressure rod communicated with the pressure channel, a pressure ring connected to the pressure rod, a power rod connected to the pressure ring, and a toggle assembly disposed on the fixed cylinder; the end of the abutting frame is provided with an inserted bar, and the inserted bar is inserted into the pressure channel.

Optionally, a poking assembly is arranged on the fixed cylinder, and the poking assembly comprises a ratchet bar arranged on the pressure rod, a limiting tooth arranged on the fixed cylinder, a limiting groove arranged at the end of the ratchet bar, an elastic part connected with the inner wall of the limiting groove, a power tooth connected with the elastic part, a poking tooth arranged on the fixed cylinder, and a pushing assembly associated with the sliding push plate; the limiting teeth are connected with limiting springs, and the limiting springs are provided with limiting assemblies.

Optionally, the pushing assembly comprises a plate block arranged on the fixed cylinder, a pushing rod arranged on the baffle block in a penetrating mode, a reset piece arranged on the baffle block in a sleeved mode, and an inclined plane arranged at the end of the pushing rod, and the end of the pushing rod is inserted into the opened inlet position.

Optionally, the limiting assembly includes a sliding frame slidably disposed on the fixed cylinder, a sliding block slidably disposed on the sliding frame, a sliding spring connected to the sliding block, a support rod disposed on the sliding block, a limiting block disposed on the fixed cylinder, a limiting sliding groove disposed on the limiting block, a pressing-down inclined block disposed on the sliding frame, a pressing rod connected to the pressing-down inclined block, and a return spring disposed on the pressing rod; the abutting rod is clamped in the limiting sliding groove, and the sliding groove is obliquely arranged.

Optionally, a guide hole is formed in the support plate, and a sliding shaft sleeve is arranged on the guide hole; the fixed seat comprises a fixed plate fixed on the machine body, a fixed shell arranged on the fixed plate and an extrusion block arranged in the fixed shell, a groove is formed in the extrusion block, and the guide shaft penetrates through the sliding shaft sleeve; the fixed guide plate is abutted to the end of the fixed shell.

In summary, the following steps:

The demoulding assembly provided by the invention can release high-pressure gas to the end part of the stamping rod when the stamping rod moves upwards, so that the workpiece can be removed by means of the high-pressure gas after the pushing disc preliminarily removes the workpiece.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a perspective view of fig. 3.

Fig. 6 is a front view of fig. 1.

Fig. 7 is a cross-sectional view at B-B in fig. 6.

Fig. 8 is an enlarged view of fig. 7 at B.

Fig. 9 is an enlarged view of fig. 8 at C.

Fig. 10 is a perspective view of the loading device in fig. 1.

Fig. 11 is an enlarged view of fig. 10 at D.

Fig. 12 is a longitudinal sectional view in fig. 10.

Fig. 13 is an enlarged view of fig. 12 at E.

Fig. 14 is a front view of fig. 10.

Fig. 15 is a cross-sectional view of fig. 14, showing only the stop assembly.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1 to 15, an ultra-thin aluminum shell cold extrusion device includes a machine body 1, a support rod 111 disposed on the machine body 1, a support plate 112 disposed on the support rod 111, a guide shaft 113 disposed through the support plate 112, a connecting plate 114 disposed on the guide shaft 113, a stamping rod 115 disposed on the connecting plate 114, a driving member 116 disposed on the support plate 112, and a fixing seat 117 disposed on the machine body 1.

The driving member 116 is an air cylinder fixed on the supporting plate 112, the power output shaft 1161 of the driving member 116 is connected to the connecting plate 114, and the connecting plate 114 drives the ram 115 to move up and down under the action of the driving member 116.

The fixing seat 117 is disposed below the punching rod 115, the fixing seat 117 includes a fixing plate 1171 fixed on the machine body 1 by screws, a fixing shell 1172 disposed on the fixing plate 1171, and an extrusion block 1173 disposed in the fixing shell 1172, the extrusion block 1173 is provided with a groove 1170, so that the cake-shaped aluminum workpiece 10 to be punched is mounted on the extrusion block 1173, the diameter of the aluminum workpiece 10 is slightly larger than that of the groove 1170, and thus, under the extrusion of the punching rod 115, the cake-shaped aluminum workpiece 10 will be extruded into a cylindrical structure attached to the outer side wall of the punching rod 115.

Therefore, the workpiece machining device can quickly finish machining of workpieces through the structure.

Further, a guide hole 1121 is formed in the support plate 112, a sliding shaft sleeve 1122 is disposed on the guide hole 1121, and the guide shaft 113 is inserted into the sliding shaft sleeve 112. Thus, the guide shaft 113 can be guided by the sliding bush 112, and a damping spring 1123 is fitted over the guide shaft 113 to provide a damping effect.

Further, in operation, the workpiece needs to be automatically loaded and unloaded in the process of stamping, that is, the workpiece to be extruded needs to be conveyed to the extrusion block 1173, and then the extruded cylindrical workpiece is taken down from the stamping rod 115, so as to collect the extruded workpiece. Therefore, a feeding device is arranged on the machine body 1, and a discharging device is arranged on the stamping rod 115.

The blanking device comprises a connecting rod 211 arranged on the connecting plate 114, a push disc 212 arranged on the connecting rod 211 and a demoulding assembly arranged on the connecting plate 114.

The push plate 212 is arranged in a ring shape, the push plate 212 is fixed through the connecting rod 211, and a ring-shaped structure surrounded by the push plate 212 is sleeved on the punching rod 115.

In this way, after the punch rod 115 is pressed downward to complete punching, the punch rod 115 moves upward, and the workpiece extruded into a cylindrical shape is wrapped on the side wall of the punch rod 115, and when the punch rod 115 moves upward, the workpiece abuts against the push disk 212, so that the lower punch rod 115 is pushed by the push disk 212 to move away the workpiece.

Further, in order to ensure that the complete demolding is completed, it is necessary to ensure that the end of the stamping rod 115 is completely retracted into the push disc 212, so that when the workpiece is shaken, the end of the stamping rod 115 and the inner wall of the push disc 212 are easily scratched, the surface of the stamping rod 115 is scratched, the stamping quality is further affected, and the stroke of the stamping rod 115 moving back and forth is prolonged due to the design manner.

Therefore, the demolding assisting device can assist demolding when the stamping rod 115 retracts by arranging the demolding component.

The demolding assembly comprises a cavity 221 arranged on the punching rod 115, an air valve 222 arranged on the cavity 221, a connecting cavity 223 arranged on the connecting plate 114, an air inlet 224 communicated with the connecting cavity 223 and a push rod 225 arranged on the supporting plate 112, wherein the end part of the connecting cavity 223 is arranged in a conical shape, the connecting cavity 223 is punched out from the end part of the punching rod 115, the end part of the air valve 222 is arranged in a flat bottom shape, and the side wall of the air valve 222 is arranged in an inclined shape. The push rod 225 and the air inlet passage 224 are aligned with each other, and the connecting chamber 223 communicates with the cavity 221.

Thus, when the ram 115 moves downward, the ram 115 presses the workpiece 10, and the gas valve 222 does not retract into the cavity 221.

When the ram 115 moves upward, the cylindrical workpiece 10 is pushed by the push plate 212 to push most of the workpiece, then the push rod 225 is inserted into the air inlet 224, and the air pressure in the cavity 221 is increased, so that after the air pressure in the cavity 221 is accumulated to a certain degree, the air valve 222 is pushed open, and high-pressure air enters the cylindrical workpiece, and the workpiece can be pushed open.

Thus, the present invention can perform automatic blanking from the punch bar 115.

Further, the feeding device comprises a fixed guide plate 311 arranged on the machine body 1, a fixed cylinder 312 arranged on the fixed plate 311, a sliding push plate 313 arranged on the fixed plate 311, a driving cylinder 314 connected with the sliding push plate 313, an opening 315 arranged on the fixed cylinder 312, and a guide assembly arranged on the fixed shell 312.

The fixed guide plate 311 abuts against the end of the fixed shell 1172, and the workpieces to be processed are stacked in the fixed cylinder 312, so that the workpieces arranged in the fixed cylinder 312 can be pushed into the extrusion block 1173 from the opening 315 in sequence under the pushing of the sliding push plate 313.

Further, one end of the sliding push plate 313 is arranged in an arc shape, the other end of the sliding push plate is provided with a baffle 3121, a guide rod 3122 penetrates through the baffle 3121, the guide rod 312 is connected with the fixed guide plate 311, and a spring is sleeved on the guide rod 312.

Further, an annular cylindrical cavity 3120 is provided in the fixed cylinder 312, so that the workpieces 10 can be stacked inside, and in order to complete the material pushing operation better, the workpieces 10 need to be compressed.

Further, the fixed cylinder 312 is provided with a pressing device, and in design, a spring is usually used to press the workpiece 10, and in operation, as the workpiece in the fixed cylinder 312 decreases, the elasticity of the spring begins to decrease, and further, the pressing force on the workpiece 10 will decrease. Therefore, during the operation of the whole device, the phenomenon of discharging and clamping shells is easy to occur because the extrusion force on the workpiece 10 is reduced.

The main factor of this problem is that after the push plate pushes away the lowest workpiece 10, the sliding push plate, when reset, can cause the workpiece 10 to shift position within the opening 315 due to pressure changes. So that it cannot be guaranteed that the sliding push plate conveys the workpiece 10 to a predetermined position each time.

For this purpose, the pressing device includes a fixed ring plate 321 disposed on the fixed cylinder 312, a guide pressing rod 322 disposed on the fixed ring plate 321, a pressing plate 323 disposed on the guide pressing plate 322, a first spring 324 disposed on the fixed ring plate 321, a connecting ring plate 325 disposed on the guide pressing rod 322, and a pressure adjusting assembly disposed on the guide pressing rod 322.

The connecting ring plate 325 is disposed on the guide strut 322 such that the pressing plate 323 presses the workpiece downward by the first spring 324. Further, the pressing plate 323 is provided with an annular groove 3231, and an end of the guide pressing rod 322 is inserted into the annular groove 3231, so that the pressing plate 323 can slide relative to the guide pressing rod 322.

The pressure regulating assembly is associated with the pressing plate 323, and the pressure of the pressing plate 323 can be regulated under the action of the pressure regulating assembly.

For this reason, the present invention can prevent the pressure applied to the workpiece 10 by the pressing plate 323 from varying with the decrease of the elasticity of the first spring 324 by the pressure adjusting assembly.

The pressure adjusting assembly comprises a second spring 331 connected with the pressing sheet 323, an adjusting ring plate 332 connected with the second spring 331, a connecting frame 333 arranged on the adjusting ring plate 332, an abutting ring plate 334 connected with the connecting frame 333, a third spring 335 sleeved on the guide pressure rod 332, an abutting frame 336 abutted with the abutting ring plate 334, a fourth spring 337 connected with the abutting frame 336, and a power assembly arranged on the fixed ring plate 322.

The second spring 331 has one end connected to the adjustment ring plate 332 and the other end connected to the pressing plate 323, and is capable of providing a pressing force to the pressing plate 323. The adjusting ring plate 332 is sleeved on the guiding pressure rod 332, and the pressure of the second spring 331 can be controlled by adjusting the position of the adjusting ring plate 332. The third spring 335 is connected at one end to a plate on the guide strut 332 and at the other end to the abutment ring plate 334, so that the adjustment ring plate 332 is moved upwards by the pulling of the third spring 335.

The abutment shelf 336 and the abutment ring plate 334 abut each other and the fourth spring 337 will pull the abutment shelf 336 upwards. The power assembly and the pusher sled 313 drive the power assembly once after each workpiece 10 is moved, and the power assembly drives the abutment shelf 336 one unit downward.

According to the invention, when the number of the workpieces 10 in the fixed cylinder 312 is reduced by arranging the pressure adjusting assembly, the pressure on the pressure plate 323 is gradually increased, thereby playing a role in pressurizing.

Further, the power assembly comprises a hydraulic block 341 disposed on the fixed ring plate 311, a pressure channel 342 disposed on the hydraulic block 341, a pressure rod 343 communicated with the pressure channel 342, a pressure ring 344 connected with the pressure rod 343, a power rod 345 connected with the pressure ring 344, and a toggle assembly disposed on the fixed cylinder 312. An insertion rod 3361 is provided at an end of the contact frame 336, and the insertion rod 3361 is inserted into the pressure channel 342.

In the present invention, the hydraulic block 341 is provided on the retainer ring plate, so that the retainer ring plate 321 can be removed from the retainer cylinder 312. So that the workpiece 10 can be put in from the top end of the fixed cylinder 312.

Since the thickness of the workpieces 10 is the same, the first spring reduces the same amount of force each time a workpiece is pushed out, by toggling the assembly to allow the power rod 345 to be depressed a unit of distance.

The toggle assembly comprises a ratchet bar 231 arranged on the pressure rod 345, a limit tooth 232 arranged on the fixed cylinder 312, a limit groove 233 arranged at the end of the ratchet bar 231, an elastic member 234 connected with the inner wall of the limit groove 233, a power tooth 235 connected with the elastic member 234, a toggle tooth 236 arranged on the fixed cylinder 312 and a pushing assembly associated with the sliding push plate 313.

The limiting teeth 232 are connected with limiting springs 2320, and the limiting springs 2320 are provided with limiting components.

Thus, each time the dialing tooth 236 is dialed, the dialing tooth 236 is made to dial the dialing tooth 235, and the pressure rod 345 moves downward by one unit distance.

The pushing assembly comprises a plate 241 arranged on the fixed barrel 312, a pushing rod 242 arranged on the plate 241 in a penetrating manner, a reset piece 240 sleeved on the plate 241 and an inclined surface 243 arranged at the end part of the pushing rod 242, so that under the action of the inclined surface 243, the pushing rod 313 can move upwards once when being inserted into the fixed barrel 312.

Further, the limiting component is used for limiting the limiting teeth 232, when the limiting teeth 232 are clamped into the ratchet bar 231, the power rod 235 is positioned, and when the limiting teeth 323 are pushed away, the power rod 235 is in a reset state.

The limiting assembly comprises a sliding frame 251 arranged on the fixed barrel 312 in a sliding mode, a sliding block 252 arranged on the sliding frame 251 in a sliding mode, a sliding spring 253 connected with the sliding block 252, a supporting rod 254 arranged on the sliding block 252, a limiting block 255 arranged on the fixed barrel 312, a limiting sliding groove 256 arranged on the limiting block 255, a downward pressing inclined block 257 arranged on the sliding frame 251, a pressing rod 258 connected with the downward pressing inclined block 257 and a reset spring 259 arranged on the pressing rod 258.

The abutting rod 254 is clamped in the limiting sliding groove 256, the sliding groove 256 is arranged obliquely, when the abutting rod 254 is clamped in a shallow position of the sliding groove 256, the abutting rod 254 pushes the sliding frame 251, and the sliding frame 251 pushes the limiting teeth 232 to be clamped in the ratchet bar 231.

When the limit of the ratchet bar 231 by the limit teeth 232 needs to be released, the pressing rod 258 is pressed, the downward pressing inclined block 257 is closed towards the middle, the pressing rod 258 is clamped into the deep groove at the moment, and the sliding frame 251 is reset.

For this purpose, the carriage 251 is also connected to the stop 255 in an elastic manner.

It is to be understood that the described embodiments are merely a few embodiments of the invention and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. A cold extrusion device for an ultrathin aluminum shell is characterized by comprising a machine body, a support rod arranged on the machine body, a support plate arranged on the support rod, a guide shaft penetrating through the support plate, a connecting plate arranged on the guide shaft, a stamping rod arranged on the connecting plate, a driving piece arranged on the support plate and a fixed seat arranged on the machine body; the machine body is provided with a feeding device, and the stamping rod is provided with a discharging device; the blanking device comprises a connecting rod arranged on the connecting plate, a push disc arranged on the connecting rod and a demoulding assembly arranged on the connecting plate.

2. The ultra-thin aluminum shell cold extrusion device of claim 1, wherein the demoulding assembly comprises a cavity arranged on the stamping rod, an air valve arranged on the cavity, a connecting cavity arranged on the connecting plate, an air inlet channel communicated with the connecting cavity and a push rod arranged on the supporting plate; wherein, the push rod with the intake duct aligns each other, the connecting chamber with the cavity intercommunication.

3. A cold extrusion apparatus for ultra-thin aluminum cases as recited in claim 2, wherein said feeding means comprises a fixed guide plate disposed on said machine body, a fixed cylinder disposed on said fixed plate, a sliding push plate disposed on said fixed plate, a driving cylinder connected to said sliding push plate, and an opening disposed on said fixed cylinder; the one end of slip push pedal is the arc setting, and the other end is provided with the baffle, wear to be equipped with the guide bar on the baffle, the guide bar links to each other with fixed baffle to the cover is equipped with the spring on the guide bar.

4. The ultra-thin aluminum shell cold extrusion device of claim 3, wherein an annular cylindrical cavity is arranged in the fixed cylinder, and a compressing device is arranged on the fixed cylinder; the compressing device comprises a fixed ring plate arranged on the fixed cylinder, a guide pressure rod penetrating through the fixed ring plate, a pressing sheet arranged on the guide pressure plate, a first spring arranged on the fixed ring plate, a connecting ring plate arranged on the guide pressure rod and a pressure adjusting assembly arranged on the guide pressure rod; the connecting ring plate is arranged on the guide pressure rod, an annular groove is formed in the pressing sheet, and the end portion of the guide pressure rod is inserted into the annular groove.

5. The ultra-thin aluminum shell cold extrusion device of claim 4, wherein the pressure adjusting assembly is associated with a pressing plate, and comprises a second spring connected with the pressing plate, an adjusting ring plate connected with the second spring, a connecting frame arranged on the adjusting ring plate, an abutting ring plate connected with the connecting frame, a third spring sleeved on the guide pressure rod, an abutting frame abutting against the abutting ring plate, a fourth spring connected with the abutting frame, and a power assembly arranged on the fixed ring plate; one end of the second spring is connected with the adjusting ring plate, and the other end of the second spring is connected with the pressing sheet; and one end of the third spring is connected with the plate on the guide pressure rod, and the other end of the third spring is connected with the abutting annular plate.

6. The ultra-thin aluminum shell cold extrusion device of claim 5, wherein the power assembly comprises a hydraulic block arranged on the fixed ring plate, a pressure channel arranged on the hydraulic block, a pressure rod communicated with the pressure channel, a pressure ring connected with the pressure rod, a power rod connected with the pressure ring, and a toggle assembly arranged on the fixed cylinder; the end of the abutting frame is provided with an inserted bar, and the inserted bar is inserted into the pressure channel.

7. The ultra-thin aluminum shell cold extrusion device of claim 6, wherein the fixed cylinder is provided with a toggle assembly, the toggle assembly comprises a ratchet bar arranged on the pressure rod, a limit tooth arranged on the fixed cylinder, a limit groove arranged at the end of the ratchet bar, an elastic member connected with the inner wall of the limit groove, a power tooth connected with the elastic member, a toggle tooth arranged on the fixed cylinder and a push assembly associated with the sliding push plate; the limiting teeth are connected with limiting springs, and the limiting springs are provided with limiting assemblies.

8. The ultra-thin aluminum shell cold extrusion device of claim 7, wherein the pushing assembly comprises a plate block disposed on the fixed cylinder, a pushing rod disposed on the baffle block, a reset member disposed on the baffle block, and an inclined plane disposed at an end of the pushing rod, wherein an end of the pushing rod is inserted into the open entrance.

9. The ultra-thin aluminum shell cold extrusion device of claim 8, wherein the limiting component comprises a sliding frame slidably disposed on the fixed cylinder, a sliding block slidably disposed on the sliding frame, a sliding spring connected to the sliding block, a support rod disposed on the sliding block, a limiting block disposed on the fixed cylinder, a limiting chute disposed on the limiting block, a pressing-down inclined block disposed on the sliding frame, a pressing rod connected to the pressing-down inclined block, and a return spring disposed on the pressing rod; the abutting rod is clamped in the limiting sliding groove, and the sliding groove is obliquely arranged.

10. A cold extrusion apparatus for ultra-thin aluminum cases as claimed in claim 9, wherein said supporting plate is provided with a guiding hole, and said guiding hole is provided with a sliding sleeve; the fixed seat comprises a fixed plate fixed on the machine body, a fixed shell arranged on the fixed plate and an extrusion block arranged in the fixed shell, a groove is formed in the extrusion block, and the guide shaft penetrates through the sliding shaft sleeve; the fixed guide plate is abutted to the end of the fixed shell.