Powder metallurgy multi-functional automatic shaping hydraulic press

Abstract

The present application relates to the field of powder metallurgy, and more particularly to a multifunctional automatic shaping hydraulic machine for powder metallurgy. The machine comprises a feeding device, a shaping die frame and a blank taking manipulator. The feeding device is used for feeding operation, i.e. conveying a blank into the shaping die frame. The shaping die frame is used for shaping operation, i.e. pressing and shaping the conveyed blank. The blank taking manipulator is used for blank taking operation, i.e. taking the pressed and shaped blank out of the shaping die frame and moving it to the next process. The present application provides a high degree of mechanization with reasonable layout, multi-station shaping, and integration of feeding, shaping and blank taking.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of powder metallurgy, in particular to a powder metallurgy multifunctional automatic shaping hydraulic machine. BACKGROUND

[0002] Powder metallurgy is a process technology that uses reduced and atomized iron metal powder as raw material, mainly through forming, sintering and shaping, etc. to manufacture various types of metal products. Because the powder metallurgy technology has a wide range of applications, it can be directly formed and basically does not need secondary processing, which not only reduces the material cost and processing cost, but also improves the production efficiency, and it has been widely used in the mechanical processing industry. However, when the powder is formed, the friction between the powder particles and the friction between the powder particles and the mold wall will hinder the filling of the negative mold cavity, thereby affecting the uniformity of the density distribution of the compact. If the density distribution of the compact is uneven, a large stress will be caused during sintering, which will cause uneven shrinkage, distortion and deformation of the part. For some products with high machining precision requirements, an additional shaping process is required after sintering, that is, a re-pressing process for powder metallurgy parts to make the powder metallurgy parts meet the size requirements, which is called finishing, also known as powder metallurgy full shaping, that is, the powder metallurgy sintered body is placed into the mold again for compression, thereby obtaining the specified size and shape. In the shaping process, the factors affecting the dimensional accuracy of the part include the density distribution of the part in the radial and longitudinal directions, the material strength of the part, and the structure of the shaping mold.

[0003] The shaped powder metallurgy parts will be more regular, the dimensional tolerance will be better, and the surface finish will be improved. However, in the prior art, the feeding of the shaping process is divided into manual feeding and mechanical feeding, both of which have the following defects: manual feeding has poor safety and low work efficiency; mechanical feeding overcomes the shortcomings of manual feeding, but also produces new problems, such as inaccurate positioning, inaccurate alignment of the upper and lower molds, difficult control of the demolding process, and difficulty in taking out the shaped compact, etc. The existing equipment has low degree of mechanization, lacks an equipment that integrates feeding, shaping and compact taking, and the overall quality of the products is uneven, which increases the production cost of the enterprise to a certain extent. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides a powder metallurgy multifunctional automatic shaping hydraulic machine with reasonable layout, multiple shaping stations, and high degree of mechanization, which integrates feeding, shaping and compact taking.

[0005] The technical scheme provided by the present application is as follows: a powder metallurgy multifunctional automatic shaping hydraulic machine, which comprises a feeding device, a shaping die frame and a blank taking manipulator, the feeding device is used for feeding operation, i.e. conveying a blank into the shaping die frame, the shaping die frame is used for shaping operation, i.e. pressing and shaping the conveyed blank, and the blank taking manipulator is used for taking operation, i.e. taking the pressed and shaped blank out of the shaping die frame and moving it to the next process.

[0006] Further optimization and improvement of the above scheme: the feeding device comprises a support table, a rotary vibration hopper, a driving motor, a vibration conveying pipeline, a positioning pipeline, a blank pushing cylinder and a feeding pipeline, the rotary vibration hopper is fixed on the support table, the driving motor is used for driving the rotary vibration hopper, a spiral blank conveying pipeline is fixed on the inner wall of the rotary vibration hopper, the lower part of the spiral blank conveying pipeline is provided with a blank input port, and the upper part is provided with a blank output port, the blank output port is communicated with the inlet of the vibration conveying pipeline, the outlet of the vibration conveying pipeline is communicated with the inlet of the positioning pipeline, the outlet of the positioning pipeline is communicated with the inlet of the feeding pipeline, the positioning pipeline is used for accurately conveying the blank to the inlet of the feeding pipeline, so that the blank pushing cylinder is ready to push the blank, the outlet of the feeding pipeline is communicated with the shaping frame, 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, pushes the blank, moves the blank from the feeding pipeline to the shaping die frame, and then retracts the cylinder to return to the initial position.

[0007] Further optimization and improvement of the above scheme: the shaping die frame comprises an upper die punch and a lower die punch below the upper die punch, the upper die punch and the lower die punch are fixed as a whole by four vertical columns penetrating through the through holes at the four corners of the upper die punch and the lower die punch and through a middle locking nut, an upper adjusting nut, an upper locking nut, a lower adjusting nut and a lower locking nut, the upper die punch comprises a main cylinder, an upper cross beam, an upper movable beam, an upper die plate, an upper die seat, 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 vertical columns, the upper movable beam is in precise sliding fit with the four vertical columns and slides up and down along the four vertical columns, the main cylinder is provided with an upper piston rod and a lower piston rod, the upper part of the upper piston rod is provided with a height limiting adjusting device, the lower piston rod is fixedly connected with the upper movable beam, the main cylinder drives the upper movable beam to slide up and down along the four vertical columns, the upper die plate is fixed at the bottom of the upper movable beam, the upper die seat is fixed at the bottom of the upper die plate, the upper die is fixed at the bottom of the upper die seat, and the upper die is internally hollow.

[0008] The lower die punch comprises a lower beam, a lower die, a fixed die plate above the lower beam, a rotary lower die frame above the fixed die plate and a main driving device, the lower die is telescopically arranged in the lower beam, the fixed die plate is fixedly connected with the lower beam through a support block, a through hole is arranged in the fixed die plate, a plurality of female dies are arranged on the rotary lower die frame, during shaping, the lower die sequentially passes through the through hole and the female dies, the lower die is opposite to the lower part of the upper die, a core rod is further arranged in the lower die, the main driving device is used for driving the rotary lower die frame to rotate, so that the female dies are rotated to corresponding work stations and sequentially perform feeding, shaping and blank taking operations.

[0009] A support leg is arranged below the shaping die frame and is used for supporting the whole equipment.

[0010] Further optimization and improvement of the above scheme: the shaping die frame is further provided with a positioning device, the positioning device comprises a positioning cylinder and a positioning cylinder rod driven by the positioning cylinder. The positioning device plays a double insurance role. When the rotary lower die frame is turned to a predetermined work station, the positioning cylinder rod in the positioning device abuts against the rotary lower die frame to prevent the rotary lower die frame from rotating.

[0011] Further optimization and improvement of the above scheme: the rotary lower die frame 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, and the two are rotatably installed on the fixed die plate through a female die plate rotating shaft, the female die passes through the female die pressing plate and the female die plate, the fixed die plate is provided with a through hole corresponding to the female die, and the through hole is opposite to the lower part of the female die; a shaft pressing cover is further fixed to the upper end of the female die pressing rotating shaft.

[0012] Further optimization and improvement of the above scheme: the main driving device is a gear driving device, which comprises a driving gear and a stepping motor driving the driving gear, the driving gear is fixedly connected with one side of the fixed die plate through a driving gear rotating shaft, the driving gear rotating shaft penetrates the fixed die plate and is fixedly connected with the stepping motor, and the driving gear is in meshing transmission with the female die plate; a driving gear pressing cover is further fixed to the upper end surface of the driving gear rotating shaft. The use of the stepping motor can accurately control the rotation angle of the driving gear and improve the accuracy of operation of each work station.

[0013] Further optimization and improvement of the above scheme: a lower die is further arranged in the through hole of the fixed die plate, the lower die is opposite to the lower part 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, and the top cylinder is fixedly connected with the support block; a lower center cylinder is fixed to the lower surface of the core rod, and the lower center cylinder is used for driving the core rod. The core rod cooperates with the cavity in the upper die and is used for shaping the blank body with a hole in the middle.

[0014] Further optimization and improvement of the above scheme: the support block is also fixed with a demolding cylinder, a demolding ejector pin in the demolding cylinder penetrates through the through hole and is opposite to the lower part of the female mold, the demolding cylinder is located below the blank taking manipulator and cooperates with the blank taking manipulator. The demolding cylinder is used for ejecting the blank body which has completed the shaping in the female mold, so that the blank taking manipulator is convenient to grasp.

[0015] Further optimization and improvement of the above scheme: the blank taking manipulator comprises a telescopic longitudinal telescopic connecting rod, a transverse rotating connecting rod which is rotationally connected with the longitudinal telescopic connecting rod through a first rotating device, and a manipulator which is rotationally connected with one end of the transverse rotating connecting rod through a second rotating device, the longitudinal telescopic connecting rod is driven by a telescopic cylinder below the longitudinal telescopic connecting rod, and the telescopic cylinder is fixed on the support.

[0016] Further optimization and improvement of the above scheme: the first rotating device is a rotating cylinder I, the second rotating device is a rotating cylinder II, the rotating angle of the rotating cylinder I is 0-90 degrees, and the rotating angle of the rotating cylinder II is 0-180 degrees; 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 rotating cylinder II, and the clamping device comprises a clamping cylinder and a concave clamping plate arranged at the front end of the clamping cylinder rod, and the annular gap formed by the two concave clamping plates is opposite to the upper part of the female mold. The rotating angle of the rotating cylinder I is 0-90 degrees, which is parallel rotation of 0-90 degrees, and is used for placing the product to the discharging area after moving the product out of the female mold, the rotating angle of the rotating cylinder II is 0-180 degrees, which is vertical rotation of 0-180 degrees, since part of the blank body is large in upper surface and small in lower surface, the blank body may be placed upside down, therefore, the blank body is placed upside down by 180 degrees, and the large surface is placed on the lower surface, so that the blank body is not placed upside down.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The present application integrates feeding, shaping and blank taking, has high mechanization degree, avoids excessive participation of manual work, and improves the safety of personnel.

[0019] 2. The lower mold punch is provided with a plurality of female molds, and three operations can be completed at one time, so that high cost caused by long assembly line is avoided, and the layout is reasonable.

[0020] 3. Through extrusion of the upper and lower mold punches, the blank body can be simultaneously shaped in outer diameter, inner diameter and end face, the shaping effect is good, and the product quality is high. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application is a structural schematic view.

[0022] Figure 2 is a top view of the present application.

[0023] Figure 3 is a structural schematic diagram of a rotary lower die holder of the present application.

[0024] Figure 4 is a Figure 3 structural schematic diagram in F direction.

[0025] Figure 5 is a side view of a feeding device in the present application.

[0026] Figure 6 is a top view of a feeding device in the present application.

[0027] Figure 7 is a front view of a blank taking manipulator in the present application.

[0028] Figure 8 is a top view of a blank taking manipulator in the present application.

[0029] Figure 9 is a sectional view of a cylinder in the present application. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present application are described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined.

[0031] As Figures 1 to 9 shown, a powder metallurgy multifunctional automatic sizing hydraulic machine is characterized in that it comprises a feeding device A, a sizing die holder B and a blank taking manipulator C, the feeding device A is used for feeding operation, i.e. conveying a blank body into the sizing die holder B, the sizing die holder B is used for sizing operation, i.e. pressing and sizing the conveyed blank body, and the blank taking manipulator C is used for blank taking operation, i.e. taking the pressed and sized blank body out of the sizing die holder B and moving it to the next process.

[0032] The feeding device A comprises a support table 1, a rotary vibrating hopper 2, a driving motor 3, a vibrating conveying pipeline 4, a positioning pipeline 5, a blank pushing cylinder 6 and a feeding pipeline 7, the rotary vibrating hopper 2 is fixed on the support table 1, the driving motor 3 is used for driving the rotary vibrating hopper 2, a spiral blank conveying pipeline 8 is fixed along the inner wall inside the rotary vibrating hopper, the lower part of the spiral blank conveying pipeline 8 is provided with a blank body input port, and the upper part is provided with a blank body output port, the blank body output port is communicated with the inlet of the vibrating conveying pipeline 4, the outlet of the vibrating 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, the outlet of the feeding pipeline is communicated with the sizing die holder, the blank pushing rod in the blank pushing cylinder is opposite to the feeding pipeline and reciprocates in the feeding pipeline.

[0033] The shaping die frame B comprises an upper die 9, a lower die 10 below the upper die 9, and a supporting leg 11 below the shaping die frame B, the supporting leg 11 is used to support the whole device, the lower die 10 is fixed on the supporting leg 11, the upper die 9 and the lower die 10 are fixed as a whole by four vertical columns 12 passing through the through holes on their four corners and by middle locking nuts, upper adjusting nuts, upper locking nuts, lower adjusting nuts and lower locking nuts, the upper die 9 comprises a main cylinder 91, an upper cross beam 92, an upper beam 93, an upper die plate 94, an upper die seat 95, an upper die pressing plate 96 and an upper die 97 arranged in sequence from top to bottom, the main cylinder 91 is fixedly arranged on the upper cross beam 92, the upper cross beam 92 is fixedly connected with the four vertical columns 12, the upper beam 93 is in precise sliding fit with the four vertical columns 12 and slides up and down along the four vertical columns 12, the main cylinder 91 is provided with an upper piston rod 911 and a lower piston rod 912, the upper part of the upper piston rod 911 is provided with a high-pressing limiting adjusting device 912, the lower piston rod 912 is fixedly connected with the upper beam 93, the main cylinder 91 drives the upper beam 92 to slide up and down along the four vertical columns 12, the upper die plate 94 is fixed at the bottom of the upper beam 93, the upper die seat 95 is fixed at the bottom of the upper die plate 94, the upper die 97 is fixed at the bottom of the upper die seat 95, and the inside of the upper die 97 is a cavity.

[0034] The lower die 10 comprises a lower cross beam 13, the lower die 10 further comprises a lower die 17, a fixed die plate 145 above the lower cross beam, a rotary lower die frame 14 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 an extendable manner, the fixed die plate is fixedly connected with the lower cross beam through a supporting block 146, the fixed die plate 145 is provided with a through hole, the rotary lower die frame 14 is provided with a plurality of female dies 141, during shaping, the lower die 17 passes through the through hole and the female dies 141 in sequence, the lower die 17 is opposite to the lower part of the upper die 97, the lower die 17 is further provided with a core rod 18, and the main driving device 15 is used to drive the rotary lower die frame 14 to rotate, so that the female dies 141 are rotated to corresponding stations and then the feeding, shaping and blank taking operations are sequentially performed.

[0035] The shaping die frame B is also provided with a positioning device 16, which comprises a positioning cylinder 161 and a positioning cylinder rod 162 driven by the positioning cylinder, and is used for limiting the rotary lower die frame 14 to prevent safety problems caused by sudden rotation after stopping; the rotary lower die frame 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 is fixedly connected with the female die plate 144, and the two are rotatably installed on the 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, the fixed die plate 145 is provided with a through hole corresponding to the female die 141, and the through hole is opposite to the lower part of the female die; the upper end of the female die plate rotating shaft 145 is further fixed with a shaft pressing cover 146.

[0036] The main driving device 15 is a gear driving device, which comprises a driving gear 151 and a stepping motor 152 driving the driving gear, the driving gear 151 is fixedly connected with one side of the fixed die plate 145 through a driving gear rotating shaft 153, the driving gear rotating shaft 153 penetrates through the fixed die plate 145 and is fixedly connected with the stepping motor 152, and the driving gear 151 is in meshing transmission with the female die plate 144; the upper end surface of the driving gear rotating shaft 153 is further fixed with a driving gear pressing cover 154.

[0037] In the shaping station, the lower die 17 is driven by the 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, the top cylinder upper piston rod 191 is provided with a top cylinder retreat adjusting device 194, the lower end of the top cylinder lower piston rod 193 is provided with a top cylinder ejection adjusting device 195, and the top cylinder 19 is fixedly connected with the support block 146; the lower center cylinder 20 is fixed to the lower surface of the core rod 18, and is used for driving the core rod 18 to penetrate through the cavity of the upper die 96, so as to shape the blank body with a hollow center.

[0038] In the blank taking station, the support block 146 is further fixed with a demolding cylinder 21, a demolding ejector rod 22 in the demolding cylinder 21 penetrates through the through hole in the fixed die plate 145 and is opposite to the lower part of the female die 141, the demolding cylinder 21 is located below the blank taking manipulator C and cooperates with the blank taking manipulator C.

[0039] The blank taking manipulator C comprises a telescopic longitudinal telescopic connecting rod 23, a transverse rotating connecting rod 25 rotatably connected with the longitudinal telescopic connecting rod through a first rotating device 24, and a manipulator 27 rotatably connected with one end of the transverse rotating connecting rod 25 through a second rotating device 26, the longitudinal telescopic connecting rod 23 is driven by a telescopic cylinder 28 below the longitudinal telescopic connecting rod 23, and the telescopic cylinder 28 is fixed on a support 29.

[0040] The first rotating device 24 is a rotary cylinder I, and the second rotating device 25 is a rotary cylinder II. The rotary cylinder I has a rotation angle of 0 to 90 degrees, and the rotary cylinder II has a rotation angle of 0 to 180 degrees. The robot arm 27 includes a U-shaped frame 271 and two symmetrical gripping devices disposed within the U-shaped frame 271. The U-shaped frame 271 is fixedly connected to the rotary cylinder II. The gripping device includes a gripping cylinder 272 and a concave clamping plate 273 disposed at the front end of the gripping cylinder rod 272. The annular gap formed by the two concave clamping plates 273 faces the top of the female mold 141.

[0041] like Figure 9 The diagram shows a cross-sectional view of the internal structure of the top cylinder, which, from top to bottom, includes a lower central cylinder guide sleeve 30, a locking plate 31, an upper cylinder port pressure 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 pressure cap 38, and a handwheel adjustment device 39. The top cylinder retraction adjustment device 194 is an adjustment nut, and the top cylinder ejection adjustment device 195 includes an adjustment pad I 40, an adjustment pad II 41, an ejection limit nut 42, and an ejection locking nut 43.

[0042] The working principle of the present application is that: the rotary lower mold frame is provided with six female molds, and a corresponding number of female molds, respectively first female mold, second female mold, third female mold, fourth female mold, fifth female mold, sixth female mold, the fixed mold plate is provided with two through holes corresponding to the corresponding female mold on the shaping station and the blank taking station, which are matched with the lower mold and the demolding cylinder to complete the shaping and blank taking operation, in the initial state, the blank is moved from the spiral blank conveying pipeline inside the rotary vibrating hopper in the feeding device to the vibrating conveying pipeline by the vibration of the driving motor, the vibrating conveying pipeline is obliquely arranged, the blank moves from high to low in the vibrating conveying pipeline by the vibration of the driving motor through its own gravity to the positioning pipeline, the positioning pipeline is vertically arranged at the inlet of the feeding pipeline, after the blank falls from the positioning pipeline, it stays at the inlet of the feeding pipeline, at this time, the blank pushing cylinder extends and moves, drives the blank pushing rod to push the blank into the first female mold from the feeding pipeline, thus, the feeding operation is completed, the stepping motor rotates, the first female mold rotates to the empty operation position, the second female mold rotates to the feeding station to feed, the above steps are repeated, after the second female mold feeding is completed, the stepping motor rotates, the first female mold rotates to the shaping station, the second female mold rotates to the empty operation position, the third female mold rotates to the feeding station, at this time, the upper mold of the shaping station moves down and inserts into the female mold, the lower mold moves up, the core rod inserts into the cavity of the upper mold, the upper and lower molds are extruded, after pressure maintaining and pressure relief, the shaping is completed, the upper mold moves up, the core rod and the lower mold move down, the stepping motor rotates, the first female mold rotates to the empty operation position again, the second female mold rotates to the shaping station, the third female mold rotates to the empty operation position, the fourth female mold rotates to the feeding station, after the second female mold shaping is completed and the second working feeding is completed, the stepping motor rotates, the first female mold rotates to the blank taking station, the second female mold rotates to the empty operation station, the third female mold rotates to the shaping station, the fourth female mold rotates to the empty operation position, the fifth female mold rotates to the feeding station, at this time, the demolding cylinder drives the demolding ejector rod to push the shaped blank out of the first female mold through the through hole on the fixed mold plate, the demolding ejector rod moves to the next process after the blank is grabbed, at the same time, the fifth female mold feeding is completed, the stepping motor rotates, the first female mold rotates to the empty operation station, the second female mold rotates to the blank taking station, the third female mold rotates to the empty operation station, the fourth female mold rotates to the shaping station, the fifth female mold rotates to the empty operation position, the sixth female mold rotates to the feeding station, thus, a complete working process is completed.

[0043] Although the embodiments of the present application are described in conjunction with the drawings, various modifications or changes can be made by the patent owner within the scope of the appended claims, as long as they do not exceed the protection scope described in the claims of the present application, they should be within the protection scope of the present application.

Claims

1. A powder metallurgy multi-functional automatic sizing hydraulic press characterized by: The feeding device is used for feeding operation, i.e. conveying the blank into the shaping die frame, the shaping die frame is used for shaping operation, i.e. pressing and shaping the conveyed blank, and the blank taking manipulator is used for blank taking operation, i.e. taking out the blank after pressing and shaping from the shaping die frame and moving to the next process; The feeding device comprises a support table, a rotary vibration hopper, a driving motor, a vibration conveying pipeline, a positioning pipeline, a blank pushing cylinder and a feeding pipeline, the rotary vibration hopper is fixed on the support table, the driving motor is used for driving the rotary vibration hopper, a spiral blank conveying pipeline is fixed along the inner wall in the rotary vibration hopper, the lower part of the spiral blank conveying pipeline is provided with a blank input port, and the upper part is provided with a blank output port, the blank output port is communicated with the inlet of the vibration conveying pipeline, the outlet of the vibration conveying pipeline is communicated with the inlet of the positioning pipeline, the outlet of the positioning pipeline is communicated with the inlet of the feeding pipeline, the outlet of the feeding pipeline is communicated with the shaping frame, the blank pushing rod in the blank pushing cylinder is opposite to the feeding pipeline and reciprocates in the feeding pipeline; The shaping die frame comprises an upper die and a lower die below the upper die, the upper die and the lower die are fixed as a whole by four vertical columns penetrating through the through holes at the four corners of the upper die and the lower die and by a middle locking nut, an upper adjusting nut, an upper locking nut, a lower adjusting nut and a lower locking nut, the upper die comprises a main cylinder, an upper cross beam, an upper movable beam, an upper die plate, an upper die seat, an upper die pressing plate and an upper die which are sequentially arranged from top to bottom, the main cylinder is fixed on the upper cross beam, the upper cross beam is fixedly connected with the four vertical columns, the upper movable beam is in precise sliding fit with the four vertical columns and slides up and down along the four vertical columns, the main cylinder is provided with an upper piston rod and a lower piston rod, the upper part of the upper piston rod is provided with a height limiting adjusting device, the lower piston rod is fixedly connected with the upper movable beam, the main cylinder drives the upper movable beam to slide up and down along the four vertical columns, the upper die plate is fixed at the bottom of the upper movable beam, the upper die seat is fixed at the bottom of the upper die plate, the upper die is fixed at the bottom of the upper die seat, and the upper die is a hollow cavity; The lower die comprises a lower cross beam, a lower die, a fixed die plate above the lower cross beam, a rotary lower die frame above the fixed die plate and a main driving device, the lower die is telescopically arranged in the lower cross beam, the fixed die plate is fixedly connected with the lower cross beam through a support block, the fixed die plate is provided with a through hole, the rotary lower die frame is provided with a plurality of female dies, during shaping, the lower die sequentially penetrates the through hole and the female dies, the lower die is opposite to the lower part of the upper die, the lower die is further provided with a core rod, and the main driving device is used for driving the rotary lower die frame to rotate so that the female dies rotate to the corresponding stations to sequentially perform feeding, shaping and blank taking operations; A support foot is arranged below the shaping die frame to support the whole equipment; A positioning device is further arranged on the shaping die frame, and the positioning device comprises a positioning cylinder and a positioning cylinder rod driven by the positioning cylinder. The rotary lower die frame comprises, from top to bottom, a female die pressing plate, a female die plate, the female die pressing plate is fixedly connected with the female die plate, and the two are rotatably installed on the fixed die plate through a female die plate rotating shaft, the female die penetrates through the female die pressing plate and the female die plate, a through hole corresponding to the female die is formed in the fixed die plate, and the through hole is opposite to the lower part of the female die; a shaft pressing cover is further fixed to the upper end of the female die pressing rotating shaft; The blank taking manipulator comprises a telescopic longitudinal telescopic connecting rod, a transverse rotating connecting rod rotatably connected with the longitudinal telescopic connecting rod through a first rotating device, and a manipulator rotatably connected with one end of the transverse rotating connecting rod through a second rotating device, the longitudinal telescopic connecting rod is driven by a telescopic cylinder below the longitudinal telescopic connecting rod, and the telescopic cylinder is fixed on the support; the main driving device is a gear driving device, which comprises a driving gear and a stepping motor driving the driving gear, the driving gear is fixedly connected with one side of the fixed die plate through a driving gear rotating shaft, the driving gear rotating shaft penetrates through the fixed die plate and is fixedly connected with the stepping motor, and the driving gear is in meshing transmission with the female die plate; a driving gear pressing cover is further fixed to the upper end surface of the driving gear rotating shaft; 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, the lower end of the top cylinder lower piston rod is provided with a top cylinder ejection adjusting device, and the top cylinder is fixedly connected with the supporting block; a lower center cylinder is fixed to the lower surface of the core rod, and the lower center cylinder is used for driving the core rod; a demolding cylinder is further fixed to the supporting block, a demolding ejector rod in the demolding cylinder penetrates through the through hole and is opposite to the lower part of the female die, the demolding cylinder is located below the blank taking manipulator and cooperates with the blank taking manipulator; the first rotating device is a rotating cylinder I, the second rotating device is a rotating cylinder II, the rotating angle of the rotating cylinder I is 0-90 degrees, and the rotating angle of the rotating cylinder II is 0-180 degrees; 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 rotating cylinder II, and the clamping device comprises a clamping cylinder and a concave clamping plate arranged at the front end of the clamping cylinder rod, and the annular gap formed by the two concave clamping plates is opposite to the upper part of the female die; The application works: the rotary lower die holder is provided with six female molds, namely 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; two through holes corresponding to the female molds are formed in the fixed mold plate at the shaping station and the blank taking station to cooperate with the lower die and the demolding cylinder to complete the shaping and blank taking operations; in the initial state, the blank is moved from the lower to the upper in the spiral blank conveying pipeline inside the rotary vibrating hopper in the feeding device through the vibration of the driving motor; the vibrating conveying pipeline is obliquely arranged; the blank moves from the high to the low in the vibrating conveying pipeline under the vibration of the driving motor through its own gravity to the positioning pipeline; the positioning pipeline is vertically arranged at the inlet of the feeding pipeline; after the blank falls from the positioning pipeline, it stays at the inlet of the feeding pipeline; at this time, the blank pushing cylinder extends to move the blank pushing rod to push the blank into the first female mold from the feeding pipeline; thus, the feeding operation is completed; the stepping motor rotates to rotate the first female mold to the empty operation position; the second female mold rotates to the feeding station to feed; the above steps are repeated; after the feeding of the second female mold is completed, the stepping motor rotates to rotate the first female mold to the shaping station and the second female mold to the empty operation position; the third female mold rotates to the feeding station; at this time, the upper die moves down to insert into the female mold, the lower die moves up, the core rod inserts into the cavity of the upper die, the upper and lower dies are extruded, the shaping is completed after pressure maintaining and pressure releasing, the upper die moves up, the core rod and the lower die move down, the stepping motor rotates to rotate the first female mold to the empty operation position again, the second female mold rotates to the shaping station, the third female mold rotates to the empty operation position, the fourth female mold rotates to the feeding station; after the shaping of the second female mold is completed and the feeding of the second female mold is completed, the stepping motor rotates to rotate the first female mold to the blank taking station, the second female mold rotates to the empty operation station, the third female mold rotates to the shaping station, the fourth female mold rotates to the empty operation position, the fifth female mold rotates to the feeding station; at this time, the demolding cylinder drives the demolding ejector rod to push the shaped blank out of the first female mold through the through hole in the fixed mold plate; after the angle of the blank taking manipulator is adjusted, the blank on the demolding ejector rod is grabbed and moved to the next process; at the same time, the feeding of the fifth female mold is completed; the stepping motor rotates to rotate the first female mold to the empty operation station, the second female mold rotates to the blank taking station, the third female mold rotates to the empty operation station, the fourth female mold rotates to the shaping station, the fifth female mold rotates to the empty operation position, and the sixth female mold rotates to the feeding station; thus, a complete working process is completed.

Images