CN112355308B

CN112355308B - Multifunctional automatic shaping hydraulic press for powder metallurgy

Info

Publication number: CN112355308B
Application number: CN202011325777.7A
Authority: CN
Inventors: 丁灿; 羌胜; 吴宣
Original assignee: Nantong Zhongye Hydraulic Press Machine Co ltd
Current assignee: Nantong Zhongye Hydraulic Press Machine Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2025-11-07
Anticipated expiration: 2040-11-24
Also published as: CN112355308A

Abstract

The invention relates to the field of powder metallurgy, in particular to a multifunctional automatic shaping hydraulic machine for powder metallurgy. The blank taking device comprises a feeding device, a shaping die frame and a blank taking manipulator, wherein the feeding device is used for feeding operation, namely, a blank is conveyed into the shaping die frame, the shaping die frame is used for shaping operation, namely, the conveyed blank is pressed and shaped, the blank taking manipulator is used for blank taking operation, namely, the pressed and shaped blank is taken out from the shaping die frame and moves to the next procedure. The invention provides a multi-station shaping machine which is reasonable in layout and high in mechanization degree, and integrates feeding, shaping and blank taking.

Description

Multifunctional automatic shaping hydraulic press for powder metallurgy

Technical Field

The invention relates to the field of powder metallurgy, in particular to a multifunctional automatic shaping hydraulic machine for powder metallurgy.

Background

Powder metallurgy is a process technology for manufacturing various metal products by taking reduced and atomized iron metal powder as a raw material and mainly performing forming, sintering, shaping and the like. The powder metallurgy technology has wide application range, can be directly molded, basically does not need secondary processing, reduces material cost and processing cost, improves production efficiency, and is widely applied to the mechanical processing industry. However, when the powder is formed, the powder particles are prevented from filling the cavity of the female mold due to friction between the powder particles and the mold wall, and uniformity of the density distribution of the compact is affected. If the density distribution of the pressed compact is uneven, great stress is caused during sintering, so that the part is unevenly contracted, distorted and deformed, and for products with high requirements on part of processing precision, a shaping procedure is added after sintering, namely, a repressing procedure for the powder metallurgy part for enabling the size of the powder metallurgy part to be qualified is called finishing, and the powder metallurgy part is also called powder metallurgy full shaping, namely, the powder metallurgy sintered body is put into a die again to be compressed, so that the determined size and shape are obtained. In the shaping process, factors influencing the dimensional accuracy of the part include radial and longitudinal density distribution of the part, material strength of the part, structure of a shaping die and the like.

The shaped powder metallurgy part will be more regular, dimensional tolerances will be better and surface finish will be improved. In the prior art, the feeding in the shaping process is divided into manual feeding and mechanical feeding, and the two defects are that the safety of the manual feeding is poor, the working efficiency is low, the mechanical feeding overcomes the defects of the manual feeding, and meanwhile, new problems are generated, such as inaccurate positioning, inaccurate alignment of an upper die and a lower die, difficult control of a demoulding process, difficult taking out of a shaped blank body and the like, the existing equipment is low in mechanization degree, and a piece of equipment integrating feeding, shaping and material taking is lacked, so that the overall quality of products is uneven, and the production cost of enterprises is increased to a certain extent.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the powder metallurgy multifunctional automatic shaping hydraulic machine which has reasonable layout, can perform multi-station shaping, integrates feeding, shaping and blank taking into a whole and has high mechanical degree.

The technical scheme provided by the invention is that the multifunctional automatic shaping hydraulic press for powder metallurgy comprises a feeding device, a shaping die frame and a blank taking manipulator, wherein the feeding device is used for feeding operation, namely, a blank is conveyed into the shaping die frame, the shaping die frame is used for shaping operation, namely, the conveyed blank is pressed and shaped, the blank taking manipulator is used for blank taking operation, namely, the pressed and shaped blank is taken out from the shaping die frame and is moved to the next working procedure.

The blank pushing device comprises a supporting table, a rotary vibration hopper, a driving motor, a vibration conveying pipeline, a positioning pipeline, a blank pushing cylinder and a feeding pipeline, wherein the rotary vibration hopper is fixed on the supporting table, the driving motor is used for driving the rotary vibration hopper, a spiral blank conveying pipeline is fixed inside the rotary vibration hopper along the inner wall, a blank input port is arranged at the lower part of the spiral blank conveying pipeline, a blank output port is arranged at the upper part of the spiral blank conveying pipeline, the blank output port is communicated with the inlet of the vibration conveying pipeline, an outlet of the vibration conveying pipeline is communicated with the inlet of the positioning pipeline, an outlet of the positioning pipeline is communicated with the inlet of the feeding pipeline, the positioning pipeline is used for accurately conveying a blank to the inlet of the feeding pipeline, the blank pushing cylinder is convenient to prepare against the blank, the outlet of the feeding pipeline is communicated with a shaping frame, and the blank pushing rod in the blank pushing cylinder is opposite to the feeding pipeline and reciprocates in the feeding pipeline. When the blank enters the inlet of the feeding pipeline, the blank pushing rod extends the cylinder to push the blank to move from the feeding pipeline to the shaping die frame, then contracts the cylinder and returns to the initial position.

The shaping die frame comprises an upper die punch and a lower die punch positioned below the upper die punch, wherein the upper die punch and the lower die punch penetrate through holes in four corners of the upper die punch through four upright posts and are fixedly assembled into a whole through middle lock nuts, upper adjusting nuts, upper lock nuts, lower adjusting nuts and lower lock nuts, the upper die punch comprises a main cylinder, an upper cross beam, an upper movable beam, an upper template, an upper die holder, an upper die pressing plate and an upper die which are sequentially arranged from top to bottom, the main cylinder is fixedly arranged on the upper cross beam, the upper cross beam is fixedly connected with the four upright posts, the upper movable beam is in precise sliding fit with the four upright posts and slides up and down along the four upright posts, an upper piston rod and a lower piston rod are arranged in the main cylinder, the upper part of the upper piston rod is provided with a high-limit adjusting device, the lower piston rod is fixedly connected with the upper movable beam, the main cylinder drives the upper piston beam to slide up and down along the four upright posts, the upper template is fixedly arranged on the bottom of the upper piston beam, the upper template is fixedly arranged on the bottom of the upper die holder, the upper die holder is fixedly arranged on the bottom of the upper die holder, and the cavity is fixedly arranged on the upper die.

The lower die punch comprises a lower cross beam, a lower die, a fixed die plate positioned above the lower cross beam, a rotary lower die frame positioned above the fixed die plate and a main driving device, wherein the lower die is arranged in the lower cross beam in a telescopic manner, the fixed die plate is fixedly connected with the lower cross beam through a supporting block, a through hole is formed in the fixed die plate, a plurality of female dies are arranged on the rotary lower die frame, during shaping, the lower die sequentially penetrates through the through hole and the female dies, the lower die is opposite to the lower side of the upper die, a core rod is further arranged in the lower die, and the main driving device is used for driving the rotary lower die frame to rotate so that the female dies rotate to corresponding stations and then sequentially feed, shape and blank taking operations are performed.

And supporting feet are arranged below the shaping die carrier and used for supporting the whole equipment.

The plastic mould frame is further optimized and improved in the scheme, and the plastic mould frame is further provided with a positioning device which comprises a positioning cylinder and a positioning cylinder rod driven by the positioning cylinder. The positioning device plays a role in double insurance, and when the rotary lower die frame rotates to a preset station, a positioning cylinder rod in the positioning device is abutted with the rotary lower die frame to prevent the rotary lower die frame from rotating.

The rotary lower die carrier is further optimized and improved in the scheme, the rotary lower die carrier further comprises a female die pressing plate and a female die plate from top to bottom, the female die pressing plate is fixedly connected with the female die plate, the female die pressing plate and the female die plate are rotatably arranged on the fixed die plate through a female die plate rotating shaft, the fixed die plate is provided with a through hole corresponding to the female die, the through hole is right opposite to the lower side of the female die, and the upper end of the female die pressing shaft is fixedly provided with a shaft pressing cover.

The main driving device is a gear driving device and comprises a driving gear and a stepping motor for driving the driving gear, the driving gear is fixedly connected with one side of the fixed template through a driving gear rotating shaft, the driving gear rotating shaft penetrates through the fixed template and is fixedly connected with the stepping motor, the driving gear is in meshed transmission with the female template, and a driving gear gland is further fixed on the upper end face of the driving gear rotating shaft. By adopting the stepping motor, the rotation angle of the driving gear can be accurately controlled, and the operation accuracy of each station is improved.

The scheme is further optimized and improved in that a lower die is further arranged in the through hole of the fixed die plate, the lower die is right opposite to the lower side of the upper die, a core rod is further arranged in the lower die, the lower die is driven by a top cylinder, the top cylinder comprises a top cylinder upper piston rod, a top cylinder body and a top cylinder lower piston rod, the lower die is fixedly connected with the top cylinder upper piston rod, a top cylinder ejection adjusting device is arranged at the lower end of the top cylinder lower piston rod, the top cylinder is fixedly connected with a supporting block, and a lower center cylinder is fixed below the core rod and used for driving the core rod. The core rod is matched with the cavity in the upper die and is used for shaping the blank with the hole in the middle.

The scheme is further optimized and improved in that the support block is also fixedly provided with a demoulding cylinder, a demoulding ejector rod in the demoulding cylinder penetrates through the through hole and is right opposite to the lower part of the female die, and the demoulding cylinder is positioned below the blank taking manipulator and is matched with the blank taking manipulator. The demoulding cylinder is used for ejecting the shaped blank in the female mould, so that the blank taking manipulator is convenient to grasp.

The blank taking manipulator comprises a telescopic longitudinal telescopic connecting rod, a transverse rotary connecting rod rotatably connected with the longitudinal telescopic connecting rod through a first rotary device and a manipulator rotatably connected with one end of the transverse rotary connecting rod through a second rotary device, wherein the longitudinal telescopic connecting rod is driven by a telescopic cylinder below the longitudinal telescopic connecting rod, and the telescopic cylinder is fixed on a support.

The manipulator comprises a U-shaped frame and two symmetrical clamping devices arranged in the U-shaped frame, the U-shaped frame is fixedly connected with the rotary cylinder II, the clamping devices comprise a clamping cylinder and concave clamping plates arranged at the front end of a clamping cylinder rod, and annular gaps formed by the two concave clamping plates are right opposite to the upper side of a female die. The rotating cylinder I is 0 to 90 degrees in rotating angle and is parallel to rotate 0 to 90 degrees for placing products in a discharging area after moving out of a female die opening, and the rotating cylinder II is 0 to 180 degrees in rotating angle and is perpendicular to rotate 0 to 180 degrees.

Compared with the prior art, the invention has the beneficial effects that:

1. The invention integrates feeding, shaping and blank taking, has high mechanization degree, avoids excessive manual participation and improves the safety of personnel.

2. The lower punch is provided with a plurality of female dies, three operations can be completed by one-time rotation, high cost caused by overlong assembly lines is avoided, and the layout is reasonable.

3. The outer diameter, the inner diameter and the end face of the blank body can be simultaneously shaped through extrusion of the upper die punch and the lower die punch, the shaping effect is good, and the product quality is high.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic structural view of a rotary lower mold frame according to the present invention.

Fig. 4 is a schematic structural diagram of the direction F in fig. 3.

Fig. 5 is a side view of a feed device of the present invention.

Fig. 6 is a top view of the feeding device of the present invention.

Fig. 7 is a front view of the blank taking manipulator of the present invention.

Fig. 8 is a top view of the blank taking manipulator of the present invention.

Fig. 9 is a cross-sectional view of the top cylinder of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.

The multifunctional automatic shaping hydraulic press for powder metallurgy is characterized by comprising a feeding device A, a shaping die frame B and a blank taking manipulator C, wherein the feeding device A is used for feeding operation, namely, a blank is conveyed into the shaping die frame B, the shaping die frame B is used for shaping operation, namely, the conveyed blank is pressed and shaped, the blank taking manipulator C is used for blank taking operation, namely, the pressed and shaped blank is taken out from the shaping die frame B and moved to the next procedure.

The feeding device A comprises a supporting table 1, a rotary vibration bucket 2, a driving motor 3, a vibration conveying pipeline 4, a positioning pipeline 5, a blank pushing cylinder 6 and a feeding pipeline 7, wherein the rotary vibration bucket 2 is fixed on the supporting table 1, the driving motor 3 is used for driving the rotary vibration bucket 2, a spiral blank conveying pipeline 8 is fixed inside the rotary vibration bucket along the inner wall, a blank input port is arranged at the lower part of the spiral blank conveying pipeline 8, a blank output port is arranged at the upper part of the spiral blank conveying pipeline 8, the blank output port is communicated with the inlet of the vibration conveying pipeline 4, the outlet of the vibration conveying pipeline 4 is communicated with the inlet of the positioning pipeline 5, the outlet of the positioning pipeline 5 is communicated with the inlet of the feeding pipeline, and the outlet of the feeding pipeline is communicated with a shaping frame, and the blank pushing rod in the blank pushing cylinder is opposite to the feeding pipeline and reciprocates in the feeding pipeline.

The shaping die carrier B comprises an upper die punch 9 and a lower die punch 10 positioned below the upper die punch 9, supporting legs 11 are further arranged below the shaping die carrier B, the supporting legs 11 are used for supporting the whole equipment, the lower die punch 10 is fixed on the supporting legs 11, the upper die punch 9 and the lower die punch 10 penetrate through holes in four corners of the four upright posts 12 and are fixedly assembled into a whole through middle lock nuts, upper adjusting nuts, upper lock nuts, lower adjusting nuts and lower lock nuts, the upper die punch 9 comprises a master cylinder 91, an upper cross beam 92, an upper piston beam 93, an upper die plate 94, an upper die holder 95, an upper die plate 96 and an upper die 97 which are sequentially arranged from top to bottom, the master cylinder 91 is fixedly arranged on the upper cross beam 92, the upper cross beam 92 is fixedly connected with the four upright posts 12, the upper piston beam 93 and the four upright posts 12 are in precise sliding fit, an upper piston rod 911 and a lower piston rod are arranged in the master cylinder 91, an upper piston rod 94 is arranged on the upper part of the upper piston rod, the upper piston rod 94 is arranged on the upper piston rod, the upper piston rod is connected with the upper die holder 95, the upper die plate 95 is fixedly arranged at the bottom of the upper die holder 95, and the upper die holder is fixedly connected with the upper die holder 93, and the upper die holder is fixedly arranged at the bottom of the upper die holder 95.

The lower die punch 10 comprises a lower cross beam 13, the lower die punch 10 further comprises a lower die 17, a fixed die plate 145 positioned above the lower cross beam, a rotary lower die frame 14 positioned above the fixed die plate 145 and a main driving device 15, the lower die 17 is arranged in the lower cross beam 10 in a telescopic manner, the fixed die plate is fixedly connected with the lower cross beam through a supporting block 146, through holes are formed in the fixed die plate 145, a plurality of female dies 141 are arranged on the rotary lower die frame 14, during shaping, the lower die 17 sequentially penetrates through the through holes and the female dies 141, the lower die 17 is opposite to the lower side of the upper die 97, a core rod 18 is further arranged in the lower die 17, and the main driving device 15 is used for driving the rotary lower die frame 14 to rotate so as to enable the female dies 141 to sequentially perform feeding, shaping and blank taking operations after rotating to corresponding stations.

The shaping die carrier B is further provided with a positioning device 16, the positioning device 16 comprises a positioning cylinder 161 and a positioning cylinder rod 162 driven by the positioning cylinder, the positioning cylinder rod is used for limiting the rotary lower die carrier 14 and preventing the safety problem caused by sudden rotation after the rotary lower die carrier is stopped, the rotary lower die carrier 14 further comprises a female die pressing plate 143 and a female die plate 144 from top to bottom, the female die pressing plate 143 and the female die plate 144 are fixedly connected and rotatably arranged on a fixed die plate 145 through a female die plate rotating shaft 147, the female die 141 penetrates through the female die pressing plate 143 and the female die plate 144, a through hole corresponding to the female die 141 is formed in the fixed die plate 145, the through hole is right opposite to the lower portion of the female die, and a shaft pressing cover 146 is further fixed at the upper end of the female die plate rotating shaft 145.

The main driving device 15 is a gear driving device, and comprises a driving gear 151 and a stepping motor 152 for driving the driving gear, the driving gear 151 is fixedly connected with one side of the fixed mold 145 plate through a driving gear rotating shaft 153, the driving gear rotating shaft 153 penetrates through the fixed mold plate 145 and is fixedly connected with the stepping motor 152, the driving gear 151 is meshed with the female mold plate 144 for transmission, and a driving gear gland 154 is further fixed on the upper end face of the driving gear rotating shaft 153.

On the shaping station, the lower die 17 is driven by a top cylinder 19, the top cylinder 19 comprises a top cylinder upper piston rod 191, a top cylinder body 192 and a top cylinder lower piston rod 193, the lower die 17 is fixedly connected with the top cylinder upper piston rod 191, a top cylinder withdrawal adjusting device 194 is arranged on the top cylinder upper piston rod 191, a top cylinder ejection adjusting device 195 is arranged at the lower end of the top cylinder 19 lower piston rod 193, the top cylinder 19 is fixedly connected with a supporting block 146, a lower center cylinder 20 is fixed below the core rod 18, and the lower center cylinder 20 is used for driving the core rod 18 to enable the core rod to penetrate through a cavity of the upper die 96 to shape a blank with an empty middle part.

On the blank taking station, a demoulding cylinder 21 is fixed on the supporting block 146, a demoulding ejector rod 22 in the demoulding cylinder 21 penetrates through a through hole in the fixed template 145 and is right opposite to the lower side of the female die 141, and the demoulding cylinder 21 is positioned below the blank taking manipulator C and is matched with the blank taking manipulator C.

The blank taking manipulator C comprises a telescopic longitudinal telescopic connecting rod 23, a transverse rotary connecting rod 25 rotatably connected with the longitudinal telescopic connecting rod through a first rotary device 24 and a manipulator 27 rotatably connected with one end of the transverse rotary connecting rod 25 through a second rotary device 26, the longitudinal telescopic connecting rod 23 is driven by a telescopic cylinder 28 below the longitudinal telescopic connecting rod, and the telescopic cylinder 28 is fixed on a support 29.

The first rotating device 24 is a rotating cylinder I, the second rotating device 25 is a rotating cylinder II, the rotating angle of the rotating cylinder I is 0-90 degrees, the rotating angle of the rotating cylinder II is 0-180 degrees, the manipulator 27 comprises a U-shaped frame 271 and two symmetrical clamping devices arranged in the U-shaped frame 271, the U-shaped frame 271 is fixedly connected with the rotating cylinder II, the clamping devices comprise a clamping cylinder 272 and concave clamping plates 273 arranged at the front end of the clamping cylinder rod 272, and annular gaps formed by the two concave clamping plates 273 are right opposite to the upper side of the female die 141.

As shown in fig. 9, which is a cross-sectional view of the internal structure of the top cylinder, the top cylinder ejection adjusting device 195 further includes, from top to bottom, a lower center cylinder guide sleeve 30, a locking piece 31, an upper cylinder port pressing cap 32, an upper cylinder port guide sleeve 33, a large lock nut 34, a piston head 35, a piston head lock nut 36, a lower cylinder port guide sleeve 37, a lower cylinder port pressing cap 38, and a hand wheel adjusting device 39, the top cylinder retraction adjusting device 194 is a positioning nut, and the top cylinder ejection adjusting device 195 includes an adjusting pad I40, an adjusting pad II41, an ejection limiting nut 42, and an ejection locking nut 43.

The invention has the working principle that if 6 female dies and corresponding female dies are arranged on a rotary lower die frame, the female dies are respectively a first female die, a second female die, a third female die, a fourth female die, a fifth female die and a sixth female die, two through holes corresponding to the corresponding female dies are respectively formed on a shaping station and a blank taking station, the two through holes are respectively matched with a lower die and a demoulding cylinder to finish shaping and blank taking operation, in an initial state, a blank body is moved to the vibrating conveying pipeline from bottom to top through vibration of a driving motor, the vibrating conveying pipeline is obliquely arranged, the blank body is moved to the vibrating conveying pipeline from top to bottom through self gravity, the positioning pipeline is vertically arranged at an inlet of the feeding pipeline, after the blank body falls from the positioning pipeline, the blank cylinder is pushed to move, the blank feeding pipeline is pushed into the first female die by the feeding pipeline, in this state, the female die is rotated by the stepping motor, the female die is rotated to the first female die, the first female die is rotated to the upper die, the second female die is rotated to the lower die is rotated to be inserted into the hollow cavity, the hollow cavity is rotated to finish shaping, the hollow die is rotated to be inserted into the hollow cavity, and fed to finish the hollow die is rotated to rotate the hollow die, and the hollow die is rotated to finish the hollow die is rotated to be fed to the hollow die from the hollow die to the hollow die by the hollow die to the hollow die, the third female die rotates to an idle operation position, the fourth female die rotates to a feeding station, after the second female die is shaped and the second work is finished, a stepping motor rotates, the first female die rotates to a blank taking operation position, the second female die rotates to the idle operation station, the third female die rotates to a shaping station, the fourth female die rotates to the idle operation vacancy, the fifth female die rotates to the feeding station, at the moment, a demoulding cylinder drives a demoulding ejector rod, after a through hole on a fixed template is formed, a shaped blank is pushed out of the first female die, after the blank taking manipulator adjusts an angle, the blank on the demoulding ejector rod is grabbed and then moves to the next procedure, meanwhile, the fifth female die is finished in feeding, a stepping motor rotates, the first female die rotates to the idle operation station, the second female die rotates to the blank taking operation position, the third female die rotates to the idle operation station, the fifth female die rotates to the idle operation vacancy, and the sixth female die rotates to the feeding station, so that the blank is a complete work flow.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, the patentees may make various modifications or alterations within the scope of the appended claims, and are intended to be within the scope of the invention as described in the claims.

Claims

1. A multi-functional automatic shaping hydraulic press for powder metallurgy, characterized in that: it includes a feeding device, a shaping mold frame, and a blank-removing robot, wherein the feeding device is used for feeding operation, that is, conveying the blank to the shaping mold frame, the shaping mold frame is used for shaping operation, that is, pressing and shaping the conveyed blank, and the blank-removing robot is used for blank-removing operation, that is, taking out the pressed and shaped blank from the shaping mold frame and moving it to the next process;

The feeding device includes a support platform, a rotary vibrating bucket, a drive motor, a vibrating conveying pipe, a positioning pipe, a billet pushing cylinder, and a feeding pipe. The rotary vibrating bucket is fixed on the support platform, and the drive motor drives the rotary vibrating bucket. A spiral billet conveying pipe is fixed along the inner wall of the rotary vibrating bucket. The spiral billet conveying pipe has a billet inlet at the bottom and a billet outlet at the top. The billet outlet is connected to the inlet of the vibrating conveying pipe, the outlet of the vibrating conveying pipe is connected to the inlet of the positioning pipe, the outlet of the positioning pipe is connected to the inlet of the feeding pipe, and the outlet of the feeding pipe is connected to the forming frame. The billet pushing rod in the billet pushing cylinder is directly opposite the feeding pipe and reciprocates within the feeding pipe.

The forming mold frame includes an upper die punch and a lower die punch located below the upper die punch. The upper die punch and the lower die punch are fixed together as a whole by four columns passing through through holes at their four corners and by a central locking nut, an upper adjusting nut, an upper locking nut, a lower adjusting nut, and a lower locking nut. The upper die punch includes, from top to bottom, a main cylinder, an upper crossbeam, an upper movable beam, an upper template, an upper die base, an upper die pressure plate, and an upper die. The main cylinder is fixedly mounted on the upper crossbeam, and the upper crossbeam is fixed to the four columns. The upper movable beam is precisely slidably connected to the four columns and slides up and down along the four columns. The main cylinder is equipped with an upper piston rod and a lower piston rod. The upper part of the upper piston rod is equipped with a pressure limit adjustment device. The lower piston rod is fixedly connected to the upper movable beam. The main cylinder drives the upper movable beam to slide up and down along the four columns. The upper template is fixed at the bottom of the upper movable beam. The upper mold base is fixed at the bottom of the upper template. The upper mold is fixed at the bottom of the upper mold base. The interior of the upper mold is a cavity.

The lower die punch includes a lower crossbeam, a lower die, a fixed template located above the lower crossbeam, a rotating lower die frame located above the fixed template, and a main drive device. The lower die is telescopically mounted inside the lower crossbeam. The fixed template is fixedly connected to the lower crossbeam via a support block. The fixed template has a through hole. The rotating lower die frame has several female dies. During shaping, the lower die passes through the through hole and the female dies in sequence. The lower die is directly below the upper die. A mandrel is also provided inside the lower die. The main drive device is used to drive the rotating lower die frame to rotate so that the female dies rotate to the corresponding work position and then perform feeding, shaping, and blank removal operations in sequence.

The forming mold frame is equipped with support feet underneath to support the entire device;

The forming mold frame is also provided with a positioning device, which includes a positioning cylinder and a positioning cylinder rod driven by the positioning cylinder.

The rotating lower mold frame includes, from top to bottom, a female mold pressure plate and a female mold template. The female mold pressure plate and the female mold template are fixedly connected, and the two are rotatably mounted on a fixed template via a female mold template pivot. The female mold passes through the female mold pressure plate and the female mold template. The fixed template has a through hole corresponding to the female mold, and the through hole faces the bottom of the female mold. A shaft pressure cap is also fixed to the upper end of the female mold pivot.

The blank-picking robot includes a retractable longitudinal telescopic link, a transverse rotating link rotatably connected to the longitudinal telescopic link via a first rotating device, and a robot arm rotatably connected to one end of the transverse rotating link via a second rotating device. The longitudinal telescopic link is driven by a telescopic cylinder below it, and the telescopic cylinder is fixed on a bracket. The main drive device is a gear drive device, which includes a drive gear and a stepper motor driving the drive gear. The drive gear is fixedly connected to one side of the fixed template via a drive gear shaft, and the drive gear shaft passes through the fixed template and is fixedly connected to the stepper motor. The drive gear meshes with the female template for transmission. A drive gear cover is also fixed to the upper end face of the drive gear shaft. The lower mold is driven by a top cylinder, which includes an upper piston rod, a top cylinder body, and a lower piston rod. The lower mold is fixedly connected to the upper piston rod of the top cylinder. The lower end of the piston rod of the cylinder is provided with a top cylinder ejection adjustment device, and the top cylinder is fixedly connected to the support block; a lower center cylinder is fixed below the mandrel, and the lower center cylinder is used to drive the mandrel; a demolding cylinder is also fixed on the support block, and the demolding ejector rod in the demolding cylinder passes through the through hole and faces the lower part of the female mold. The demolding cylinder is located below the blank-picking robot and cooperates with the blank-picking robot; the first rotating device is a rotary cylinder I, and the second rotating device is a rotary cylinder II. The rotary cylinder I has a rotation angle of 0 degrees to 90 degrees, and the rotary cylinder II has a rotation angle of 0 degrees to 180 degrees; the robot includes a U-shaped frame and two symmetrical gripping devices set in the U-shaped frame. The U-shaped frame is fixedly connected to the rotary cylinder II. The gripping device includes a gripping cylinder and a concave clamping plate set at the front end of the gripping cylinder rod. The annular gap formed by the two concave clamping plates faces the upper part of the female mold;

In operation, the rotating lower mold frame is equipped with six female molds: a first female mold, a second female mold, a third female mold, a fourth female mold, a fifth female mold, and a sixth female mold. A fixed template has two through holes corresponding to the respective female molds at the forming station and the blank removal station. These holes cooperate with the lower mold and the demolding cylinder to complete the forming and blank removal operations. Initially, the blank is moved from bottom to top through a spiral conveying pipe inside the rotating vibrating hopper of the feeding device, driven by the vibration of a drive motor. The vibrating conveying pipe is obliquely designed. Inside the vibrating conveying pipe, the blank is subjected to vibration by the drive motor. The billet moves from high to low along the vibrating conveying pipe towards the positioning pipe under its own weight. The positioning pipe is vertically positioned at the inlet of the feeding pipe. After the billet falls from the positioning pipe, it stops at the inlet of the feeding pipe. At this time, the pushing cylinder extends, driving the pushing rod to push the billet from the feeding pipe into the first female mold. This completes the feeding operation. The stepper motor rotates, and the first female mold rotates to the empty operating position. The second female mold rotates to the feeding position to feed the billet. The above steps are repeated. After the second female mold has finished feeding the billet, the stepper motor rotates, and the first female mold rotates to the shaping position. The second female mold rotates to the empty operating position, and the third female mold rotates to the feeding position. At the material feeding station, at this time, at the shaping station, the upper mold moves down and inserts into the female mold, the lower mold moves up, and the mandrel is inserted into the cavity of the upper mold. The upper and lower molds press against each other, and after pressure holding and pressure release, the shaping is completed. The upper mold moves up, and the mandrel and lower mold move down. The stepper motor rotates, and the first female mold rotates to the idle position again. The second female mold rotates to the shaping station, the third female mold rotates to the idle position, and the fourth female mold rotates to the material feeding station. After the second female mold has finished shaping and the second workpiece feeding has finished, the stepper motor rotates, and the first female mold rotates to the blank removal position, the second female mold rotates to the idle position, the third female mold rotates to the shaping station, and the fourth female mold rotates... The mold is moved to the empty operating position, and the fifth female mold rotates to the feeding position. At this time, the demolding cylinder drives the demolding ejector rod, which pushes the shaped blank out of the first female mold after passing through the through hole on the fixed template. After the blank taking robot adjusts the angle, it grabs the blank on the demolding ejector rod and moves it to the next process. At the same time, the feeding of the fifth female mold is completed, the stepper motor rotates, the first female mold rotates to the empty operating position, the second female mold rotates to the blank taking position, the third female mold rotates to the empty operating position, the fourth female mold rotates to the shaping position, the fifth female mold rotates to the empty operating position, and the sixth female mold rotates to the feeding position. This completes one workflow.