Powder forming press capable of improving product quality

Abstract

The invention discloses a powder forming press capable of improving product quality, which comprises a main box body, an upper die mechanism, a middle die plate, a middle die lifting driving device, a lower die, a lower fixing plate and a supporting assembly, the upper die mechanism comprises an upper die, an upper die lifting driving device, an upper fixing seat, an upper first punching plate, a buffer cylinder and an upper punching guide plate; the upper die lifting driving device is installed on the top of the main box body, the upper die lifting driving device penetrates through the upper fixing base through an upper die transmission assembly and then is in transmission connection with the first upper punching plate, the buffering air cylinder is fixedly connected to the bottom face of the first upper punching plate, and at least two upper air cylinder guide rods are fixed to the two sides of the bottom face of the first upper punching plate. The upper punching guide plate is fixedly connected to the conveying portion of the buffering air cylinder and is in transmission connection with the conveying portion of the buffering air cylinder, and guide holes are formed in the upper punching guide plate and correspond to the upper air cylinder guide rods. The buffering air cylinder used for absorbing the pressing impact force is arranged in the upper die mechanism, so that the situation that dark cracks appear after products are pressed is reduced, and the product quality is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of powder forming presses, and more particularly to a powder forming press capable of improving product quality. Background Art

[0002] A powder forming press is a device that presses metal or ceramic powder into a product of a fixed shape (such as a block). However, the upper die mechanism of traditional powder forming presses does not have a buffer cylinder. As a result, when the upper die is pressing the powder, the power transmitted by the upper die lifting drive device directly acts on the powder, making the impact force during the pressing process large and difficult to control. This can easily cause uneven stress distribution within the powder, which in turn leads to problems such as dark cracks and inconsistent density in the pressed product, seriously affecting the mechanical properties and service life of the product. In addition, due to the lack of auxiliary guidance brought by the buffer during the movement of the upper die, the upper die may also deviate, further affecting the dimensional accuracy of the product, resulting in poor product consistency and low yield rate. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a powder molding press that can reduce product cracking, improve molding accuracy, and operate stably and reliably to improve product quality by adopting a buffer cylinder.

[0004] To achieve the above-mentioned purpose, the present invention provides a powder forming press capable of improving product quality, comprising a main box, an upper die mechanism, a middle die plate, a middle die lifting drive device, a lower die, a lower fixed plate, and a support assembly, wherein the upper die mechanism comprises an upper die, an upper die lifting drive device, an upper fixed seat, an upper punch plate, a buffer cylinder, and an upper punch guide plate, wherein the upper die lifting drive device is mounted on the top of the main box, the upper die lifting drive device passes through the upper fixed seat through the upper die transmission assembly and is transmission-connected to the top surface of the upper punch plate, the buffer cylinder is fixedly connected to the bottom surface of the upper punch plate, and the upper At least two upper cylinder guide rods are vertically connected to both sides of the bottom surface of the punch plate, the upper punch guide plate is fixedly connected to the conveying part of the buffer cylinder and is transmission connected thereto, a guide hole is opened on the upper punch guide plate corresponding to each upper cylinder guide rod, and a guide rod sleeve is fixedly inserted at the top of each guide hole, the upper mold is fixedly connected downward to the bottom surface of the upper punch guide plate, the middle mold lifting drive device passes through the lower fixed plate through the middle mold transmission assembly and is transmission connected to the bottom surface of the middle template, the support assembly is fixedly installed on the top of the lower fixed plate, and the lower mold is upwardly penetrated into the middle template through the support assembly.

[0005] Preferably, it also includes a slide plate and a powder feeding mechanism, the slide plate is located on the middle template, the top of the middle template is located in the through hole of the slide plate, the powder feeding mechanism includes a powder feeding barrel, a powder feeding pipe, a powder box, a powder box driving device, a material pipe adapter, a pneumatic butterfly valve, and a butterfly valve fixing plate, the powder feeding barrel is fixedly installed on the upper outer wall of the main box body, the powder box driving device is fixedly installed on the middle outer wall of the main box body, the pneumatic butterfly valve is fixedly installed above the slide plate through the butterfly valve fixing plate, the discharge port of the powder feeding barrel is connected to the material pipe adapter installed at the feed end of the pneumatic butterfly valve through the powder feeding pipe, the discharge end of the pneumatic butterfly valve is connected to the discharge port on the top of the powder box, and the two sides of the powder box are transmission-connected to the material box driving device and driven to move horizontally on the slide by the powder box driving device.

[0006] Preferably, the powder feeding mechanism also includes a first residual powder recovery box and a second residual powder recovery box, the first residual powder recovery box is fixedly mounted on one side wall of the middle template and its top opening is located below one end of the butterfly valve fixing plate and the slide, the second residual powder recovery box is fixedly mounted on the other side wall of the middle template and its top opening is located below the other end of the slide.

[0007] Preferably, it also includes a mold frame upper guide rod and two mold frame guide rod fixing blocks. Support ribs located below the middle template are respectively formed in the middle of the two inner side walls of the main box body. The mold frame guide rod fixing blocks are respectively fixedly connected to the support ribs. There are two or more mold frame upper guide rods, and the two ends of each mold frame upper guide rod are respectively fixedly connected between the upper fixing seat and the mold frame guide rod fixing block. The upper punch plate and the middle template are respectively slidably connected to the mold frame upper guide rod from top to bottom.

[0008] Preferably, the upper mold transmission assembly includes an upper screw rod, an upper screw rod coupling, an upper screw rod bearing seat, an upper screw rod guide plate, an upper screw rod guide rod, an upper screw rod nut sleeve, an upper punch load element mounting seat and an upper punch load element. The top of the upper screw rod is transmission-connected to the output part of the upper mold lifting drive device through the upper screw rod coupling, the upper screw rod bearing seat is embedded upwards in the top of the main box body, the upper part of the upper screw rod is rotatably connected to the upper screw rod bearing seat, and the two ends of the upper screw rod guide rod are respectively fixed to the top inner end surface of the main box body and the upper The upper screw guide plate is slidably connected to the upper screw guide rod between the tops of the fixed seats, the upper end of the upper screw nut sleeve is fixedly mounted on the upper mold guide plate, the upper screw is arranged vertically downward and is threadedly connected to the upper screw nut sleeve, the upper end of the upper screw nut sleeve is fixedly connected to the upper screw guide plate, the lower end of the upper screw nut sleeve passes through the upper fixed seat and is connected to the top surface of the load cell mounting seat, and the bottom surface of the upper punch load cell mounting seat is connected to the upper punch load cell fixedly connected to the top of the upper punch plate.

[0009] Preferably, the middle mold transmission assembly includes a middle mold screw, a middle mold screw coupling, a middle mold screw bearing seat, a middle mold screw nut, and a middle mold screw sleeve. The top of the middle mold screw is transmission-connected to the output part of the middle mold lifting drive device through the middle mold screw coupling. The middle mold screw bearing seat is embedded downward on the lower fixed plate. The lower part of the middle mold screw bearing seat is rotatably connected to the middle mold screw bearing seat. The middle mold screw is vertically arranged upward and threadedly connected to the middle mold screw nut. The middle mold screw sleeve cover is arranged on the middle mold screw and its bottom is fixedly connected to the top surface of the middle mold screw nut. The top surface of the middle mold screw sleeve is fixedly connected to the bottom surface of the middle mold plate.

[0010] Preferably, the support assembly includes a lower plate, a lower pad, a bridging support block, and a lower mold seat pad. The lower plate is fixed above the top of the lower fixed plate by a number of vertically arranged bridging support blocks. The lower mold is fixedly connected to the top of the lower mold seat pad from bottom to top and is passed through the middle mold plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention has a novel structure and a reasonable design. By arranging a buffer cylinder for absorbing the pressing impact force in the upper die mechanism, the occurrence of dark cracks in the product after pressing can be reduced, thereby greatly improving the product quality. At the same time, the upper cylinder guide rod cooperates with the guide hole and guide rod sleeve of the upper punch guide plate to ensure the smooth movement of the upper die. Through the coordinated action of the upper die lifting drive device, the middle die lifting drive device and their respective corresponding transmission assemblies and other components, the accuracy and stability of the movement of the upper die and the middle die plate are guaranteed, thereby further improving the accuracy and reliability of powder molding.

[0013] 2. In the present invention, the powder feeding pipe of the powder feeding mechanism is indirectly connected to the discharge port of the powder box through a pneumatic butterfly valve, so that when the powder box is driven by the powder box driving device to move horizontally back and forth along the slide, it will not contact the powder feeding pipe, thereby avoiding the influence of the pulling or displacement of the powder feeding pipe, effectively eliminating the problem of uneven powder discharge caused by the pulling of the powder feeding pipe, thereby ensuring the stability and uniformity of the discharge process, and providing a basic guarantee for the quality of the subsequent pressed and molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of a portion of the structure provided by an embodiment of the present invention. Figure 1 (Main box hidden);

[0017] Figure 3 is an enlarged schematic diagram of the position of the buffer cylinder provided by an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of a portion of the structure provided by an embodiment of the present invention. Figure 2 ;

[0019] Figure 5 Schematic diagram of the structure of the slide plate and powder feeding mechanism provided in an embodiment of the present invention;

[0020] Figure 6 This is an enlarged schematic diagram of the working state of the powder feeding mechanism provided in an embodiment of the present invention;

[0021] Figure 7 It is a schematic cross-sectional view of a portion of the structure provided by an embodiment of the present invention;

[0022] Figure 8 It is a partially exploded schematic diagram of a core rod and a core rod lifting drive device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Please refer to Figure 1 An embodiment of the present invention provides a powder molding press that can improve product quality, including a main box 1, an upper mold mechanism 2, a middle mold plate 3, a middle mold lifting drive device 31, a lower mold 4, a lower fixed plate 5, a support assembly 6 and other components. The following is a detailed description of the various components of this embodiment in conjunction with the accompanying drawings.

[0025] like Figure 1 and Figure 3As shown, the upper die mechanism 2 may include an upper die 21, an upper die lifting drive device 22, an upper fixed seat 23, an upper punch plate 24, a buffer cylinder 25, and an upper punch guide plate 26. The upper die lifting drive device 22 is installed on the top of the main box 1. The upper die lifting drive device 22 passes through the upper fixed seat 23 through the upper die transmission assembly and is transmission-connected to the top surface of the upper punch plate 24. The buffer cylinder 25 is fixedly connected to the bottom surface of the upper punch plate 24. The bottom surfaces of the upper punch plate 24 are connected on both sides. The side is fixedly connected to an upper cylinder guide rod seat 241, and the bottom of the upper cylinder guide rod seat 241 is vertically connected to at least two upper cylinder guide rods 242. The upper punch guide plate 26 is fixedly connected to the conveying part of the buffer cylinder 25 and is transmission-connected thereto. A guide hole 261 is provided on the upper punch guide plate 26 corresponding to each upper cylinder guide rod 242, and a guide rod sleeve 262 is fixedly inserted at the top of each guide hole 261. The upper mold 21 is fixedly connected downward to the bottom surface of the upper punch guide plate 26.

[0026] Furthermore, the middle mold lifting drive device 31 can be connected to the bottom surface of the middle mold plate 3 through the middle mold transmission assembly after passing through the lower fixed plate 5. The support assembly 6 is fixedly installed on the top of the lower fixed plate 5, and the lower mold 4 is passed upward through the support assembly 6 in the middle mold plate 3.

[0027] like Figure 2 As shown, it may further include a slide plate 7 and a powder feeding mechanism 8 . The slide plate 7 is located on the middle template 3 , and the top of the middle template 3 is located in the through hole of the slide plate 7 .

[0028] Specifically, if Figure 4 As shown, the powder feeding mechanism 8 may include a powder feeding barrel 81, a powder feeding pipe 82, a powder box 83, a powder box driving device 84, a connecting frame 85, a material pipe adapter 86, a pneumatic butterfly valve 87, and a butterfly valve fixing plate 88. The powder feeding barrel 81 is fixedly installed on the upper outer wall of the main box body 1, and the powder box driving device 84 is fixedly installed on the middle outer wall of the main box body 1. The pneumatic butterfly valve 87 is fixedly installed above the slide plate 7 through the butterfly valve fixing plate 88. The discharge port of the powder feeding barrel 81 is connected to the material pipe adapter 86 installed at the feeding end of the pneumatic butterfly valve 87 through the powder feeding pipe 82, and the discharge end of the pneumatic butterfly valve 87 is connected to the discharge port at the top of the powder box 83. The material box ear buckles on both sides of the powder box 83 are connected to the material box driving device through the connecting frame 85 and are driven to move horizontally on the slide plate 7 by the material box driving device.

[0029] In order to prevent powder from leaking during the transportation process, the top of the powder box 83 can be connected to a powder box discharge nozzle 831 that communicates with the inner cavity of the powder box.

[0030] like Figure 5As shown, in this embodiment, the powder box driving device 84 is composed of a common material box driving motor 841, a material box swing arm 842, and a powder feeding push rod 843. The lower end of the material box swing arm 842 is transmission-connected to the material box driving motor 841, and the upper end of the material box swing arm 842 is hinged to the end of the powder feeding push rod 843. The front end of the powder feeding push rod 843 is connected to the top of the downward-slanted connecting frame 85 with a harpoon structure, and the front end of the connecting frame 85 is rotatably connected to the material box ear buckles on both sides of the powder box 83. In addition, the pneumatic butterfly valve 87 can adopt the common pneumatic butterfly valves on the market. This embodiment does not limit the above-mentioned components, so their structure is not described in detail.

[0031] Furthermore, the powder feeding mechanism 8 can also include a first residual powder recovery box 891 and a second residual powder recovery box 892. The first residual powder recovery box 891 is fixedly installed on one side wall of the middle template 3 and its top opening is located below the butterfly valve fixing plate 88 and one end of the slide 7. The second residual powder recovery box 892 is fixedly installed on the other side wall of the middle template 3 and its top opening is located below the other end of the slide 7.

[0032] When implementing it specifically, Figure 6 As shown, first, the powder in the powder feeding barrel 81 is transported to the feed pipe adapter 86 at the feed end of the pneumatic butterfly valve 87 through the powder feeding pipe 82. The pneumatic butterfly valve 87 can control the on-off of the powder to achieve the regulation of the amount of powder entering the powder box 83. When a certain amount of powder is loaded into the powder box 83, the pneumatic butterfly valve 87 is closed, and the powder box 83 is driven by the powder box driving device 84 to move horizontally on the slide 7 and release the connection with the powder feeding pipe 82, so that the powder falls accurately into the cavity hole and is fully filled. At the same time, the powder box 83 When the slide 7 moves horizontally, the hinged seat 852 rotates the downward pressure cylinder 851 connected to the bottom of the upper fixed seat 23 and acting on both sides of the connecting frame 85, ensuring that the powder box 83 can move smoothly close to the slide 7. Finally, when the powder box driving device 84 drives the powder box 83 forward and backward, the residual powder on the slide 7 can be scraped to its edge and slide into the first residual powder recovery box 891 and the second residual powder recovery box 892 for collection, thereby recovering the residual powder on the slide 7 and keeping it clean.

[0033] In addition, it can also include a mold frame upper guide rod 27 and two mold frame guide rod fixing blocks 271. The middle part of the two inner side walls of the main box body 1 is respectively formed with a support rib 11 located below the middle template 3. The mold frame guide rod fixing blocks 271 are respectively fixedly connected to the support rib 11. There are two or more mold frame upper guide rods 27. The two ends of each mold frame upper guide rod 27 are respectively fixedly connected between the upper fixed seat 23 and the mold frame guide rod fixing block 271. The upper punch plate 24 and the middle template 3 are respectively slidably connected to the mold frame upper guide rod 27 from top to bottom.

[0034] Among them, by adopting an integrated support rib 11 design on the inner wall of the main box body 1, during the pressing process, the support rib 11 can evenly transfer the local concentrated stress to the entire box structure, avoiding stress concentration, significantly improving the pressing stability and extending its service life.

[0035] like Figure 7 As shown, the upper mold transmission assembly may include an upper screw rod 221, an upper screw rod coupling 222, an upper screw rod bearing seat 223, an upper screw rod guide plate 224, an upper screw rod guide rod 225, an upper screw rod nut sleeve 226, an upper punch load element mounting seat 227 and an upper punch load element 228. The top of the upper screw rod 221 is transmission-connected to the output part of the upper mold lifting drive device 22 through the upper screw rod coupling 222, the upper screw rod bearing seat 223 is embedded upward in the top of the main box body 1, the upper part of the upper screw rod 221 is rotationally connected to the upper screw rod bearing seat 223, and the two ends of the upper screw rod guide rod 225 are respectively fixed in the top of the main box body 1. Between the end face and the top of the upper fixed seat 23, the upper screw guide plate 224 is slidably connected to the upper screw guide rod 225, and the upper end of the upper screw nut sleeve 226 is fixedly mounted on the upper mold guide plate 224. The upper screw 221 is arranged vertically downward and is threadedly connected to the upper screw nut sleeve 226. The upper end of the upper screw nut sleeve 226 is fixedly connected to the upper screw guide plate 224, and the lower end of the upper screw nut sleeve 226 passes through the upper fixed seat 23 and is connected to the top surface of the load cell mounting seat. The bottom surface of the upper punch load cell mounting seat 227 is connected to the upper punch load cell 228 fixedly connected to the top of the upper punch plate 24.

[0036] Preferably, the middle mold transmission assembly may include a middle mold screw 321, a middle mold screw coupling 322, a middle mold screw bearing seat 323, a middle mold screw nut 324, and a middle mold screw sleeve 325. The top of the middle mold screw 321 is transmission-connected to the output part of the middle mold lifting drive device 31 through the middle mold screw coupling 322. The middle mold screw bearing seat 323 is embedded downward on the lower fixed plate 5. The lower part of the middle mold screw bearing seat 323 is rotatably connected to the middle mold screw bearing seat 323. The middle mold screw 321 is vertically arranged upward and is threadedly connected to the middle mold screw nut 324. The middle mold screw sleeve 325 is covered on the middle mold screw 321 and its bottom is fixedly connected to the top surface of the middle mold screw nut 324. The top surface of the middle mold screw sleeve 325 is fixedly connected to the bottom surface of the middle mold plate 3.

[0037] Among them, the upper mold lifting drive device 22 and the middle mold lifting drive device 31 can both be composed of a lifting drive motor and a reducer commonly found on the market. The output rod of the lifting drive motor is fixedly connected to a part of the upper screw bearing seat 223 extending from the upper end of the upper punch screw or a part of the middle mold screw bearing seat 323 extending from the lower end of the middle mold screw 321 through the reducer.

[0038] Specifically, the support assembly 6 may include a lower plate 61, a lower pad 62, a bridging support block 63, and a lower mold seat pad 64. The lower plate 61 is fixed above the top of the lower fixed plate 5 by a number of vertically arranged bridging support blocks 63. The lower mold 4 is fixed upwardly connected to the top of the lower mold seat pad 64 by the lower pad 62 and the lower mold seat pad 64 from bottom to top and is passed through the middle mold plate 3.

[0039] In specific implementation, the upper die lift drive 22 drives the upper screw 221 to rotate, which in turn drives the upper screw nut sleeve 226 to move up and down through threaded transmission, thereby driving the upper punch 24 to move up and down along the installation direction of the mold frame upper guide rod 27. The middle die lift drive 31 drives the middle die screw 321 to rotate, which in turn drives the middle die screw sleeve 325 to move up and down through the middle die screw nut 324, thereby driving the middle die plate 3 to move up and down along the installation direction of the mold frame upper guide rod 27. During operation, the upper die lift drive 22 drives the upper die 21 to rise and fall, cooperating with the lower die 4 to complete powder compaction. The middle die lift drive 31 drives the middle die plate 3 to move up and down, achieving product demolding and reset, ensuring continuous production.

[0040] like Figure 8 As shown, in this embodiment, it can also include a mandrel 9 and a mandrel lifting drive device 91, the mandrel lifting drive device 91 includes a mandrel lifting motor 911, a mandrel plate 912, a mandrel guide plate 913, a mandrel guide rod 914, a mandrel screw 915, a mandrel screw bearing seat 916, a mandrel nut guide sleeve 917, a mandrel clamping cylinder 918, a mandrel seat plate 919, a mandrel clamping claw 920 and a mandrel adapter rod 921, the mandrel screw bearing seat 916 is embedded in the mandrel plate 912, one end of the mandrel screw 915 is transmission-connected to the output part of the mandrel lifting motor 911 located below the main box 1 and is rotationally connected to the mandrel screw bearing seat 916 through the mandrel plate 912, and the mandrel screw 915 is rotationally connected to the mandrel screw bearing seat 916. The other end is threadedly connected to the core rod nut guide sleeve 917 and is passed through the core rod guide plate 913. The core rod guide rod 914 is provided with two ends that pass through the lower fixed plate 5 and the next plate 61 respectively and are fixedly connected between the core rod plate 912 and the middle template 3. The core rod guide plate 913 is slidably connected to the core rod guide rod 914. One end of the core rod nut guide sleeve 917 is fixedly connected to the core rod guide plate 913 and the other end is connected to the bottom of the core rod clamping cylinder 918 after passing through the lower fixed plate 5. Several core rod clamping claws 920 at the output end of the core rod clamping cylinder 918 pass through the core rod seat plate 919 and are transmission-connected to the bottom end of the core rod transfer rod 921. The bottom end of the core rod 9 is fixedly connected to the top of the core rod transfer rod 921.

[0041] During specific implementation, the core rod lifting motor 911 drives the core rod screw 915 to rotate, driving the core rod nut guide sleeve 917 and the core rod guide plate 913 to rise and fall along the core rod guide rod 914, thereby realizing the position adjustment of the core rod 9. The operation is convenient and flexible. The core rod 9 can be inserted into the interior of the middle mold plate 3 and cooperate with the upper mold 21 and the lower mold 4 to form the inner hole or complex internal structure of the product, effectively improving the production efficiency and molding accuracy.

[0042] To sum up, the present invention can reduce the occurrence of hidden cracks in products after pressing by arranging a buffer cylinder for absorbing the pressing impact force in the upper mold mechanism, thereby greatly improving product quality. At the same time, the upper cylinder guide rod cooperates with the guide hole and guide rod sleeve of the upper punch guide plate to ensure the smooth movement of the upper mold. Through the coordinated action of the upper mold lifting drive device, the middle mold lifting drive device and their respective corresponding transmission components and other components, the accuracy and stability of the movement of the upper mold and the middle mold plate are guaranteed, further improving the accuracy and reliability of powder molding.

[0043] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A powder forming press capable of improving product quality, characterized by: The present invention comprises a main box body, an upper mold mechanism, a middle mold plate, a middle mold lifting drive device, a lower mold, a lower fixed plate, and a support assembly. The upper mold mechanism comprises an upper mold, an upper mold lifting drive device, an upper fixed seat, an upper punch plate, a buffer cylinder, and an upper punch guide plate. The upper mold lifting drive device is installed on the top of the main box body. The upper mold lifting drive device is connected to the top surface of the upper punch plate after passing through the upper fixed seat through the upper mold transmission assembly. The buffer cylinder is fixedly connected to the bottom surface of the upper punch plate. At least two sides of the bottom surface of the upper punch plate are vertically connected The upper cylinder guide rod is connected to the upper punch guide plate, and the upper punch guide plate is fixedly connected to the conveying part of the buffer cylinder and is transmission connected thereto. A guide hole is opened on the upper punch guide plate corresponding to each upper cylinder guide rod, and a guide rod sleeve is fixedly inserted at the top of each guide hole. The upper mold is fixedly connected to the bottom surface of the upper punch guide plate downward, and the middle mold lifting drive device passes through the lower fixed plate through the middle mold transmission assembly and is transmission connected to the bottom surface of the middle template. The support assembly is fixedly installed on the top of the lower fixed plate, and the lower mold is upwardly penetrated into the middle template through the support assembly.

2. A powder forming press capable of improving product quality according to claim 1, characterized in that: It also includes a skateboard and a powder feeding mechanism, the skateboard is located on the middle template, the top of the middle template is located in the through hole of the skateboard, the powder feeding mechanism includes a powder feeding barrel, a powder feeding pipe, a powder box, a powder box driving device, a material pipe adapter, a pneumatic butterfly valve, and a butterfly valve fixing plate, the powder feeding barrel is fixedly installed on the upper outer wall of the main box body, the powder box driving device is fixedly installed on the middle outer wall of the main box body, the pneumatic butterfly valve is fixedly installed above the skateboard through the butterfly valve fixing plate, the discharge port of the powder feeding barrel is connected to the material pipe adapter installed at the feed end of the pneumatic butterfly valve through the powder feeding pipe, the discharge end of the pneumatic butterfly valve is connected to the discharge port on the top of the powder box, and the two sides of the powder box are transmission-connected to the material box driving device and driven to move horizontally on the skateboard by the powder box driving device.

3. A powder forming press capable of improving product quality according to claim 2, characterized in that: The powder feeding mechanism also includes a first residual powder recovery box and a second residual powder recovery box. The first residual powder recovery box is fixedly installed on one side wall of the middle template and its top opening is located below the butterfly valve fixing plate and one end of the slide. The second residual powder recovery box is fixedly installed on the other side wall of the middle template and its top opening is located below the other end of the slide.

4. The powder forming press capable of improving product quality according to claim 1, characterized in that: It also includes a mold frame upper guide rod and two mold frame guide rod fixing blocks. The middle parts of the two inner side walls of the main box body are respectively formed with support ribs located below the middle template. The mold frame guide rod fixing blocks are respectively fixedly connected to the support ribs. There are two or more mold frame upper guide rods, and the two ends of each mold frame upper guide rod are respectively fixedly connected between the upper fixing seat and the mold frame guide rod fixing block. The upper punch plate and the middle template are respectively slidably connected to the mold frame upper guide rod from top to bottom.

5. The powder forming press capable of improving product quality according to claim 1, characterized in that: The upper mold transmission assembly includes an upper screw rod, an upper screw rod coupling, an upper screw rod bearing seat, an upper screw rod guide plate, an upper screw rod guide rod, an upper screw rod nut sleeve, an upper punch load element mounting seat and an upper punch load element. The top of the upper screw rod is transmission-connected to the output part of the upper mold lifting drive device through the upper screw rod coupling. The upper screw rod bearing seat is embedded upward on the top of the main box body. The upper part of the upper screw rod is rotatably connected to the upper screw rod bearing seat. The two ends of the upper screw rod guide rod are respectively fixed to the top inner end surface of the main box body and the upper fixed seat The top of the upper screw guide plate is slidably connected to the upper screw guide rod, the upper end of the upper screw nut sleeve is fixedly mounted on the upper mold guide plate, the upper screw is arranged vertically downward and is threadedly connected to the upper screw nut sleeve, the upper end of the upper screw nut sleeve is fixedly connected to the upper screw guide plate, the lower end of the upper screw nut sleeve passes through the upper fixed seat and is connected to the top surface of the load cell mounting seat, and the bottom surface of the upper punch load cell mounting seat is connected to the upper punch load cell fixedly connected to the top of the upper punch plate.

6. The powder forming press capable of improving product quality according to claim 1, characterized in that: The middle mold transmission assembly includes a middle mold screw, a middle mold screw coupling, a middle mold screw bearing seat, a middle mold screw nut, and a middle mold screw sleeve. The top of the middle mold screw is transmission-connected to the output part of the middle mold lifting drive device through the middle mold screw coupling. The middle mold screw bearing seat is embedded downward on the lower fixed plate. The lower part of the middle mold screw bearing seat is rotatably connected to the middle mold screw bearing seat. The middle mold screw is vertically arranged upward and threadedly connected to the middle mold screw nut. The middle mold screw sleeve cover is provided on the middle mold screw and its bottom is fixedly connected to the top surface of the middle mold screw nut. The top surface of the middle mold screw sleeve is fixedly connected to the bottom surface of the middle template.

7. The powder forming press capable of improving product quality according to claim 1, characterized in that: The supporting assembly includes a lower plate, a lower pad, a bridging support block, and a lower mold seat pad. The lower plate is fixed above the top of the lower fixed plate by a number of vertically arranged bridging support blocks. The lower mold is fixedly connected to the top of the lower mold seat pad from bottom to top and is passed through the middle mold plate.

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