High Precision Powder Forming Machine

Abstract

The present invention discloses a high-precision powder forming machine, comprising a frame and an upper mold device, a lower mold device and a feeding device arranged on the frame; the upper mold device is located above the lower mold device; the lower mold device comprises a fixed mold, a first lower mold driving mechanism, a first lower mold, at least two second lower mold driving mechanisms, at least two second lower molds and at least two lower pressing plates; the fixed mold is fixed on the frame; the output end of the first lower mold driving mechanism is connected to the first lower mold to drive the first lower mold to rise and fall; the output end of the second lower mold driving mechanism is connected to the lower pressing plate, and the lower pressing plate is connected to the second lower mold to drive the second lower mold to rise and fall; the fixed mold, the first lower mold and the second lower mold form a mold cavity; the feeding device can convey powder to the mold cavity. The high-precision powder forming machine of the present invention has the advantages of high molding accuracy and good molding effect.

Description

Technical Field

[0001] The invention relates to a high-precision powder forming machine, in particular to a high-precision powder forming machine with high forming accuracy and good forming effect. Background Art

[0002] The current powder forming machine generally includes an upper die and a lower die, and uses an upper die driving mechanism to drive the upper die downward, and uses a lower die driving mechanism to drive the lower die upward, so that the upper die and the lower die are closed, and then the powder in the die cavity is compressed to form a solid workpiece. However, the existing powder forming machines have the disadvantages of weak mechanical rigidity and low operating accuracy, which is difficult to reach the micron level, resulting in the non-adhesion of the pressed product and uneven density. Therefore, the product processing quality is not ideal. Summary of the invention

[0003] The object of the present invention is to provide a high-precision powder forming machine with high forming accuracy and good forming effect.

[0004] In order to achieve the above-mentioned purpose, the high-precision powder forming machine provided by the present invention includes a frame and an upper mold device, a lower mold device and a feeding device arranged on the frame; the upper mold device is located above the lower mold device; the lower mold device includes a fixed mold, a first lower mold driving mechanism, a first lower mold, at least two second lower mold driving mechanisms, at least two second lower molds and at least two lower pressing plates; the fixed mold is fixed on the frame; the output end of the first lower mold driving mechanism is connected to the first lower mold to drive the first lower mold to rise and fall; the output end of the second lower mold driving mechanism is connected to the lower pressing plate, and the lower pressing plate is connected to the second lower mold to drive the second lower mold to rise and fall; the fixed mold, the first lower mold and the second lower mold form a mold cavity; the feeding device can transport powder to the mold cavity, so as to use the upper mold device to press the powder in the mold cavity into a workpiece.

[0005] Compared with the prior art, the present invention provides at least two second lower molds, at least two lower pressing plates and at least two second lower mold driving mechanisms, and connects the output end of the second lower mold driving mechanism to the lower pressing plate, and connects the lower pressing plate to the second lower mold, so that a second lower mold driving mechanism can drive a second lower mold to rise and fall. Since each second lower mold is driven by a second lower mold driving mechanism alone, the force on each second lower mold and the second lower mold driving mechanism can be reduced, thereby improving the overall mechanical rigidity of the powder molding machine; and the position of each second lower mold can be controlled individually, which is conducive to improving the accuracy of operation and the quality of molding.

[0006] Preferably, the lower pressing plates are stacked in the vertical direction, and the lower pressing plates are staggered in the same circumferential direction of the horizontal plane. Through the lower pressing plates, the force of the corresponding second lower die driving mechanism can be fully transmitted to the corresponding second lower die, ensuring that the second lower die has sufficient thrust force to press the product, thereby improving the mechanical rigidity, further improving the operating accuracy, and improving the molding quality.

[0007] Preferably, the second lower die driving mechanism is distributed around the first lower die driving mechanism.

[0008] Preferably, the first lower die driving mechanism comprises a first lower die motor, a first lower die screw, a first lower die screw sleeve, a first lower die push plate and a first lower die push rod, the output end of the first lower die motor is connected to the first lower die screw, the first lower die screw is threadedly connected to the first lower die screw sleeve, the first lower die screw and the first lower die screw sleeve are passed through the lower pressing plate, the first lower die screw sleeve is connected to the first lower die push plate, the first lower die push plate is connected to the first lower die push rod, and the first lower die push rod is connected to the first lower die. By using the first lower die screw and the first lower die screw sleeve to cooperate, the moving position of the first lower die is made more accurate, which greatly improves the operation accuracy and the quality of product molding.

[0009] Preferably, the second lower die driving mechanism comprises a second lower die motor, a second lower die screw, a second lower die nut, a second lower die push plate and a second lower die push rod, the output end of the second lower die motor is connected to the second lower die screw, the second lower die screw is threadedly connected to the second lower die screw sleeve, the second lower die screw sleeve is connected to the second lower die push plate, the second lower die push plate is connected to the second lower die push rod, and the second lower die push rod is connected to the lower pressing plate corresponding to the second lower die push rod. By using the second lower die screw to cooperate with the second lower die nut, the moving position of the second lower die is made more accurate, which greatly improves the operation accuracy and improves the quality of product molding.

[0010] Specifically, each of the second lower die push plates is stacked in the vertical direction, and each of the second lower die push plates is staggered in the same circumferential direction of the horizontal plane. In this way, each lower pressing plate can be driven independently, and mutual interference can be avoided, thereby improving the compactness of the structure and reducing the volume of the machine body.

[0011] Preferably, the upper mold device includes a first upper mold driving mechanism, a first upper mold, a second upper mold driving mechanism, a second upper mold and a lifting platform, wherein the output end of the first upper mold driving mechanism is connected to the first upper mold and the lifting platform to drive the first upper mold and the lifting platform to rise and fall; the second upper mold driving mechanism is arranged on the lifting platform, and the output end of the second upper mold driving mechanism is connected to the second upper mold to drive the second upper mold to rise and fall. By setting the lifting platform, the second upper mold driving mechanism is arranged on the lifting platform, so that the first upper mold driving mechanism can be used to drive the lifting and falling of the first upper mold while driving the lifting and falling of the lifting platform, thereby enabling the second upper mold driving mechanism to rise and fall synchronously with the first upper mold. In this way, the difficulty of adjusting the upper mold device can be greatly reduced and the accuracy of operation can be improved.

[0012] Specifically, the first upper mold driving mechanism includes a first upper mold motor, a first upper mold screw, a first upper mold threaded sleeve and a first upper mold push plate, the output end of the first upper mold motor is connected to the first upper mold screw, the first upper mold screw is threadedly connected to the first upper mold threaded sleeve, the first upper mold threaded sleeve is connected to the lifting platform and the first upper mold push plate, and the first upper mold push plate is connected to the first upper mold.

[0013] Specifically, the second upper mold driving mechanism includes a second upper mold motor, a second upper mold screw, a second upper mold threaded sleeve and a second upper mold push plate. The second upper mold motor is fixed on the lifting platform and the output end is connected to the second upper mold screw. The second upper mold screw is threadedly connected to the second upper mold threaded sleeve. The second upper mold threaded sleeve is connected to the second upper mold push plate. The second upper mold push plate is connected to the second upper mold.

[0014] Preferably, the feeding device includes a pushing mechanism, a cover body and a powder conveying device, the cover body is movably arranged above the mold cavity, the pushing mechanism drives the cover body to move and cover the mold cavity or move away from the mold cavity, and the output end of the powder conveying device is connected to the cover body. By utilizing the pushing mechanism, the cover body can be driven close to the mold cavity, and then the powder conveying device can be used to automatically deliver the powder to the mold cavity. In addition, after the product is formed, the pushing mechanism can be used to drive the cover body, so as to push the product out of the material, thereby achieving the purpose of automatic loading and unloading, with a high degree of automation and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the high-precision powder molding machine of the present invention.

[0016] Figure 2 It is a front view of the high-precision powder forming machine of the present invention.

[0017] Figure 3 It is a side view of the high-precision powder molding machine of the present invention.

[0018] Figure 4 It is a three-dimensional diagram of the lower mold device of the high-precision powder molding machine of the present invention.

[0019] Figure 5 It is a front view of the lower mold device of the high-precision powder molding machine of the present invention.

[0020] Figure 6 It is a top view of the lower pressing plate of the high-precision powder molding machine of the present invention.

[0021] Figure 7 It is a bottom view of the second lower die driving mechanism of the high-precision powder forming machine of the present invention.

[0022] Figure 8 It is a top view of the second lower mold push plate of the high-precision powder molding machine of the present invention.

[0023] Fig. 9 It is a three-dimensional diagram of the upper mold device of the high-precision powder molding machine of the present invention.

[0024] Fig.10 It is a front view of the upper mold device of the high-precision powder molding machine of the present invention.

[0025] Fig.11 It is a structural diagram of the feeding device of the high-precision powder molding machine of the present invention. DETAILED DESCRIPTION

[0026] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0027] like Figures 1 to 5 and Figures 9 and 10As shown, the high-precision powder forming machine 100 of the present invention comprises a frame 1 and an upper mold device 2, a lower mold device 3 and a feeding device 4 arranged on the frame 1; the upper mold device 2 is located above the lower mold device 3; the lower mold device 3 comprises a fixed mold 31, a first lower mold driving mechanism 32, a first lower mold 33, at least two second lower mold driving mechanisms 34, at least two second lower molds 35 and at least two lower pressing plates 36; the present application has three second lower mold driving mechanisms 34, three second lower molds 35 and three lower pressing plates 36. The fixed mold 31 is fixed on the frame 1. The output end of the first lower mold driving mechanism 32 is connected to the first lower mold 33 to drive the first lower mold 33 to rise and fall. The output end of the second lower mold driving mechanism 34 is connected to the lower pressing plate 36, and the lower pressing plate 36 is connected to the second lower mold 35 to drive the second lower mold 35 to rise and fall; the fixed mold 31, the first lower mold 33 and the second lower mold 35 form a mold cavity. The feeding device 4 can convey powder to the mold cavity so that the powder in the mold cavity can be pressed into a workpiece by using the upper mold device 2 .

[0028] See also Figure 2 , Figures 5 to 7 As shown, the lower pressing plates 36 are stacked in the vertical direction, and the lower pressing plates 36 are staggered in the same circumferential direction of the horizontal plane. The second lower die driving mechanism 34 is distributed around the first lower die driving mechanism 32. Through the lower pressing plates 36, the force of the corresponding second lower die driving mechanism 34 can be fully transmitted to the corresponding second lower die 35, ensuring that the second lower die 35 has sufficient thrust force to press the product, thereby improving the mechanical rigidity, and further improving the operation accuracy and the molding quality.

[0029] See also Figure 4 and Figure 5 The first lower die driving mechanism 32 includes a first lower die motor 321, a first lower die screw rod 322, a first lower die screw sleeve 323, a first lower die push plate 324 and a first lower die push rod 325. The output end of the first lower die motor 321 is connected to the first lower die screw rod 322, the first lower die screw rod 322 is threadedly connected to the first lower die screw sleeve 323, the first lower die screw rod 322 and the first lower die screw sleeve 323 are penetrated by the lower pressing plate 36, the first lower die screw sleeve 323 is connected to the first lower die push plate 324, the first lower die push plate 324 is connected to the first lower die push rod 325, and the first lower die push rod 325 is connected to the first lower die 33. By using the first lower die screw rod 322 and the first lower die screw sleeve 323 to cooperate, the moving position of the first lower die 33 is more accurate, which greatly improves the operation accuracy and the quality of product molding.

[0030] See also Figure 4 and Figure 5The lower mold device 3 further includes a third lower mold 37 and a push rod 38. The push rod 38 is connected to the first lower mold push plate 324. The third lower mold 37 is arranged at the upper end of the push rod 38, and the third lower mold 37 extends upward into the mold cavity. The third lower mold 37 is a columnar structure, and a hole can be formed in the product after the product is formed in the mold cavity.

[0031] See also Figure 4 , Figure 5 and Figure 8 Each of the second lower die driving mechanisms 34 includes two second lower die motors 341, two second lower die screws 342, two second lower die nuts 343, a second lower die push plate 344 and two second lower die push rods 345. The output end of the second lower die motor 341 is connected to the second lower die screws 342 in a one-to-one correspondence, the second lower die screws 342 are threadedly connected to the second lower die 35 sleeves in a one-to-one correspondence, the two second lower die 35 sleeves are connected to a second lower die push plate 344 and are located at both ends of the second lower die push plate 344, the second lower die push plate 344 is connected to the two second lower die push rods 345, and the two second lower die push rods 345 are connected to the lower pressing plate 36 corresponding to the two second lower die push rods 345. Each of the second lower die push plates 344 is stacked in the vertical direction, and each of the second lower die push plates 344 is staggered in sequence in the same circumferential direction of the horizontal plane. In this way, each lower pressing plate 36 can be driven independently, and mutual interference can be avoided, thereby improving the compactness of the structure and reducing the volume of the machine body. By using the second lower die screw 342 and the second lower die nut 343 to cooperate, the moving position of the second lower die 35 can be made more accurate, greatly improving the operating accuracy and the quality of product molding.

[0032] For example Figures 1 to 3 and Figures 9 and 10 The lower mold device 3 also includes a fixed mold support mechanism 39, which includes a support rod 391 and a bottom plate 392. One end of the support rod 391 is fixed to the frame 1, and the other end of the support rod 391 passes through the lower pressure plate 36 and is connected to the bottom plate 392. The fixed mold 31 is fixed on the bottom plate 392.

[0033] Please see again Fig. 9 and Fig.10When the first lower die driving mechanism 32 is in mold closing, the first lower die motor 321 starts to drive the first lower die screw rod 322 to rotate, the first lower die screw rod 322 drives the first lower die screw sleeve 323 to rise, the first lower die screw sleeve 323 drives the first lower die push plate 324 to move upward, the first lower die push plate 324 drives the first lower die push rod 325 and the third lower die 37 to rise to the mold closing position, and at the same time, the first lower die push rod 325 drives the first lower die 33 to rise to the mold closing position.

[0034] When the second lower die driving mechanism 34 is in mold closing, the second lower die motor 341 is started, driving the second lower die screw 342 to rotate, the second lower die screw 342 drives the second lower die nut 343 to rise, the second lower die nut 343 drives the second lower die push plate 344 to rise, the second lower die nut 343 drives the second lower die push rod 345 to rise, and the second lower die push rod 345 drives the lower pressing plate 36 to rise. At this time, the three lower pressing plates 36 are pressed together with the first lower die 33. At this time, the three second lower dies 35 extend into the die cavity and close the mold with the first lower die 33 and the third lower die 37.

[0035] Please see again Fig. 9 and Fig.10 The upper mold device 2 includes a first upper mold driving mechanism 21, a first upper mold 22, a second upper mold driving mechanism 23, a second upper mold 24 and a lifting platform 25. The output end of the first upper mold driving mechanism 21 is connected to the first upper mold 22 and the lifting platform 25 to drive the first upper mold 22 and the lifting platform 25 to rise and fall; the second upper mold driving mechanism 23 is arranged on the lifting platform 25, and the output end of the second upper mold driving mechanism 23 is connected to the second upper mold 24 to drive the second upper mold 24 to rise and fall. By setting the lifting platform 25, the second upper mold driving mechanism 23 is arranged on the lifting platform 25, so that the first upper mold driving mechanism 21 can be used to drive the first upper mold 22 to rise and fall while driving the lifting platform 25 to rise and fall, so that the second upper mold driving mechanism 23 can be synchronously lifted and lowered with the first upper mold 22. In this way, the difficulty of adjusting the upper mold device 2 can be greatly reduced and the accuracy of operation can be improved.

[0036] Please see again Fig. 9 and Fig.10The first upper die driving mechanism 21 includes a first upper die motor 211, a first upper die screw rod 212, a first upper die screw sleeve 213 and a first upper die push plate 214. The output end of the first upper die motor 211 is connected to the first upper die screw rod 212, the first upper die screw rod 212 is threadedly connected to the first upper die screw sleeve 213, the first upper die screw sleeve 213 is connected to the lifting platform 25 and the first upper die push plate 214, and the first upper die push plate 214 is connected to the first upper die 22. A first upper die push rod 215 is connected between the end of the first upper die screw sleeve 213 and the first upper die push plate 214.

[0037] Please see again Fig. 9 and Fig.10 The second upper die driving mechanism 23 includes two second upper die motors 231, two second upper die screws 232, two second upper die screw sleeves 233, a second upper die push plate 234, two second upper die push rods 235 and a second upper die pressing plate 236. The two second upper die motors 231 are fixed to the two ends of the lifting platform 25 and the output ends are connected to the second upper die screws 232 in a one-to-one correspondence. The second upper die screws 232 are threadedly connected to the second upper die screw sleeves 233 in a one-to-one correspondence. The two second upper die screw sleeves 233 are connected to the second upper die push plate 234. The second upper die push rod 235 is arranged between the second upper die pressing plate 236 and the second upper die push plate 234, and the second upper die 24 is arranged on the second upper die pressing plate 236. The second upper die 24 is columnar and passes through the first upper die 22 and extends into the die cavity.

[0038] Please see again Figure 2 , Figure 5 and Fig.10 , a guide column 331 is provided on the first lower die 33, and a guide plate 216 is connected between the end of the first upper die screw sleeve 213 and the first upper die push plate 214; specifically, the first upper die push plate 214 is fixedly connected to the first upper die push rod 215, the first upper die push rod 215 passes through the second upper die pressing plate 236 and is connected to the guide plate 216, and the first upper die screw sleeve 213 is connected to the guide plate 216. The guide plate 216 is slidably sleeved on the guide column 331. By providing the guide column 331 and the guide plate 216, the upper die device 2 and the lower die device 3 can cooperate with each other, ensure the accuracy of the mold closing, and improve the accuracy of the operation.

[0039] like Fig.11As shown, the feeding device 4 includes a pushing mechanism 41, a cover body 42 and a powder conveying device 43. The cover body 42 is movably arranged above the mold cavity. The pushing mechanism 41 drives the cover body 42 to move and cover the mold cavity or stay away from the mold cavity. The output end of the powder conveying device 43 is connected to the cover body 42. The pushing mechanism 41 includes a motor, a screw, a nut and a push rod. The output end of the motor is connected to the screw, the screw is connected to the nut, the nut is connected to the push rod, and the push rod is connected to the cover body 2. By using the pushing mechanism 41, the cover body 42 can be driven to approach the mold cavity, and then the powder conveying device 43 is used to automatically deliver the powder to the mold cavity. In addition, after the product is formed, the pushing mechanism 41 can be used to drive the cover body 42, so as to push the product to be unloaded, thereby achieving the purpose of automatic loading and unloading, with a high degree of automation and saving labor costs.

[0040] Based on the above and in combination with the above drawings, the working principle of the high-precision powder forming machine 100 of the present invention is described as follows:

[0041] The first lower die driving mechanism 32 pushes the first lower die 33 and the third lower die 37 to rise, and at the same time, the second lower die driving mechanism 34 drives the second lower die 35 to rise, and at this time, an open die cavity is formed between the fixed die 31, the first lower die 33, the second lower die 35 and the third lower die 37. Afterwards, the feeding device 4 conveys powder into the die cavity. Then, the uniformity of the powder in the die cavity is adjusted by vibration through the vibration mechanism.

[0042] After the powder is conveyed, the first upper mold driving mechanism 21 drives the first upper mold 22 to move downward, and the second upper mold 24 moves downward at the same time. Before the first upper mold 22 and the second upper mold 24 enter the mold cavity, the second upper mold 24 reaches the powder filling position. After the first upper mold driving mechanism 21 drives the first upper mold 22 to enter the mold cavity, the first upper mold driving mechanism 21 stops. At this time, the uniformity of the powder in the mold cavity is adjusted again by vibration through the vibration mechanism.

[0043] Then, the first upper die driving mechanism 21 continues to drive the first upper die 22 to press down, and the second upper die 24 presses down at the same time. When the second upper die 24 reaches the pressing position, the first upper die driving mechanism 21 continues to drive the first upper die 22 to press down. At this time, the second upper die driving mechanism 23 drives the second upper die 24 to retreat relative to the first upper die 22, so that the second upper die 24 is stationary relative to the pressing position. At the same time, the first lower die driving mechanism 32 drives the first lower die 33 to start moving downward to demould. When the first upper die 22 is pressed in place, the first upper die driving mechanism 21 drives the first upper die 22 to start retreating and rising, and the second upper die driving mechanism 23 drives the second upper die 24 to retreat and rise, so that the second upper die 24 is demoulded faster relative to the first upper die 22, until the first upper die 22, the second upper die 24, the first lower die 33 and the second lower die 35 are completely retreated and reset, and the pressing is completed. The feeding device 4 can push the formed product out of the feeding channel.

[0044] Compared with the prior art, the present invention provides at least two second lower molds 35, at least two lower pressing plates 36 and at least two second lower mold driving mechanisms 34, and connects the output end of the second lower mold driving mechanism 34 to the lower pressing plate 36, and connects the lower pressing plate 36 to the second lower mold 35, so that one second lower mold driving mechanism 34 can drive one second lower mold 35 to rise and fall. Since each second lower mold 35 is driven by one second lower mold driving mechanism 34 alone, the force on each second lower mold 35 and the second lower mold driving mechanism 34 can be reduced, thereby improving the overall mechanical rigidity of the powder molding machine; and the position of each second lower mold 35 can be controlled individually, which is conducive to improving the operation accuracy and the molding quality.

[0045] The control methods of various motors involved in the high-precision powder forming machine 100 of the present invention are well known to ordinary technicians in the field and will not be described in detail here.

[0046] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A high-precision powder forming machine, characterized in that: The machine comprises a frame and an upper mold device, a lower mold device and a feeding device arranged on the frame; the upper mold device is located above the lower mold device; the lower mold device comprises a fixed mold, a first lower mold driving mechanism, a first lower mold, at least two second lower mold driving mechanisms, at least two second lower molds and at least two lower pressing plates; the fixed mold is fixed on the frame; the output end of the first lower mold driving mechanism is connected to the first lower mold to drive the first lower mold to rise and fall; the output end of the second lower mold driving mechanism is connected to the lower pressing plate, and the lower pressing plate is connected to the second lower mold to drive the second lower mold to rise and fall; the fixed mold, the first lower mold and the second lower mold form a mold cavity; the feeding device can transport powder to the mold cavity, so as to use the upper mold device to press the powder in the mold cavity into workpiece; the lower pressure plates are stacked in the vertical direction, and each of the lower pressure plates is staggered in sequence in the same circumferential direction of the horizontal plane; the second lower die driving mechanism includes a second lower die motor, a second lower die screw, a second lower die nut, a second lower die push plate and a second lower die push rod, the output end of the second lower die motor is connected to the second lower die screw, the second lower die screw is threadedly connected to the second lower die sleeve, the second lower die sleeve is connected to the second lower die push plate, the second lower die push plate is connected to the second lower die push rod, and the second lower die push rod is connected to the lower pressure plate corresponding to the second lower die push rod; each of the second lower die push plates is stacked in the vertical direction, and each of the second lower die push plates is staggered in sequence in the same circumferential direction of the horizontal plane.

2. The high-precision powder forming machine according to claim 1, characterized in that: The second lower die driving mechanism is distributed around the first lower die driving mechanism.

3. The high-precision powder forming machine according to claim 1, characterized in that: The first lower die driving mechanism includes a first lower die motor, a first lower die screw, a first lower die threaded sleeve, a first lower die push plate and a first lower die push rod, the output end of the first lower die motor is connected to the first lower die screw, the first lower die screw is threadedly connected to the first lower die threaded sleeve, the first lower die screw and the first lower die threaded sleeve are penetrated by the lower pressure plate, the first lower die threaded sleeve is connected to the first lower die push plate, the first lower die push plate is connected to the first lower die push rod, and the first lower die push rod is connected to the first lower die.

4. The high-precision powder forming machine according to claim 1, characterized in that: The upper mold device includes a first upper mold driving mechanism, a first upper mold, a second upper mold driving mechanism, a second upper mold and a lifting platform, wherein the output end of the first upper mold driving mechanism is connected to the first upper mold and the lifting platform to drive the first upper mold and the lifting platform to rise and fall; The second upper mold driving mechanism is arranged on the lifting platform, and the output end of the second upper mold driving mechanism is connected to the second upper mold to drive the second upper mold to lift.

5. The high-precision powder forming machine according to claim 4, characterized in that: The first upper mold driving mechanism includes a first upper mold motor, a first upper mold screw, a first upper mold threaded sleeve and a first upper mold push plate, the output end of the first upper mold motor is connected to the first upper mold screw, the first upper mold screw is threadedly connected to the first upper mold threaded sleeve, the first upper mold threaded sleeve is connected to the lifting platform and the first upper mold push plate, and the first upper mold push plate is connected to the first upper mold.

6. The high-precision powder forming machine according to claim 4, characterized in that: The second upper mold driving mechanism includes a second upper mold motor, a second upper mold screw, a second upper mold threaded sleeve and a second upper mold push plate. The second upper mold motor is fixed on the lifting platform and the output end is connected to the second upper mold screw. The second upper mold screw is threadedly connected to the second upper mold threaded sleeve. The second upper mold threaded sleeve is connected to the second upper mold push plate. The second upper mold push plate is connected to the second upper mold.

7. The high-precision powder forming machine according to claim 1, characterized in that: The feeding device includes a pushing mechanism, a cover body and a powder conveying device. The cover body is movably arranged above the mold cavity. The pushing mechanism drives the cover body to move and cover the mold cavity or move away from the mold cavity. The output end of the powder conveying device is connected to the cover body.

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