Powder dry-pressing molding device and method

Patent metadata

Field	Value
Publication number	US-11938653-B2
Application number	US-202017282211-A
Country	US
Kind code	B2
Filing date	May 8, 2020
Priority date	Feb 18, 2020
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

The present invention relates to a powder dry-pressing molding device and method. The powder dry-pressing molding device includes a rack, the rack is provided with an first pressure mechanism, a workbench mechanism and a second pressure mechanism in sequence along an up-and-down direction, and one side of the workbench mechanism is provided with a scraping mechanism; the first pressure mechanism includes an upper slide block capable of moving up and down, and an upper punch is disposed at a bottom of the upper slide block; the workbench mechanism includes a middle mold seat, a workbench is fixed above the middle mold seat, a middle mold is disposed inside the middle mold seat, and a mandrel runs through the inside of the middle mold; the second pressure mechanism includes a lower slide block capable of moving up and down, a lower punch is fixed at the top end of the lower slide block, and the lower punch is capable of extending into a compacting space between the mandrel and the middle mold; and the scraping mechanism includes a pusher connected with a scraping driving mechanism and capable of moving along the workbench, the pusher is provided with a feeding channel capable of being communicated with the compacting space, and the feeding channel is capable of being communicated with a barrel disposed on the rack. The dry-pressing molding device of the present invention has a high degree of automation, can scrape the powder, and has a good processing effect.

First claim

What is claimed is:

1. A powder dry-pressing molding device, comprising a rack, wherein the rack is provided with a first pressure mechanism, a workbench mechanism and a second pressure mechanism in sequence along an up-and-down direction, and one side of the workbench mechanism is provided with a scraping mechanism;
the first pressure mechanism comprises an upper slide block capable of moving up and down, the upper slide block is connected with an upper driving mechanism, and an upper punch is disposed at a bottom of the upper slide block;
the workbench mechanism comprises a middle mold seat, a workbench is fixed above the middle mold seat, a middle mold is disposed inside the middle mold seat, a mandrel fixedly disposed coaxially with the middle mold runs through the inside of the middle mold, and a compacting space for containing powder is formed between the mandrel and the middle mold;
the second pressure mechanism comprises a lower slide block capable of moving up and down, the lower slide block is connected with a lower driving mechanism, a lower punch is fixed at a top end of the lower slide block, and the lower punch is capable of extending into the compacting space between the mandrel and the middle mold and compacting the powder together with the upper punch; and
the scraping mechanism comprises a pusher connected with a scraping driving mechanism and capable of moving along the workbench, the pusher is provided with a feeding channel capable of being communicated with the compacting space, the feeding channel is capable of being communicated with a barrel disposed on the rack, and after the feeding channel is aligned with the compacting space, the lower punch moves downward to generate a vacuum so as to suck the powder into the compacting space.

2. The powder dry-pressing molding device according to claim 1 , wherein both ends of the upper slide block are fixedly provided with a first fixing seat respectively, the first fixing seat is fixedly provided with a first guide post, and the first guide post runs through a first guide seat fixed on the rack so as to guide the movement of the upper slide block.

3. A method using the powder dry-pressing molding device according to claim 2 , the method comprising:
moving the pusher to align the feeding channel with the compacting space;
moving the lower punch downward to vacuumize the compacting space;
providing the powder into the compacting space;
reciprocating the pusher along the workbench part above the compacting space to scrape the powder; and
moving the upper punch downward and moving the lower punch upward to press the powder in two directions so as to form a blank.

4. The powder dry-pressing molding device according to claim 2 , wherein a part of the lower slide block below the workbench mechanism is fixedly provided with a second fixing seat, the second fixing seat is fixedly provided with a second guide post, and the second guide post runs through a second guide seat fixed on the rack so as to guide the movement of the lower slide block.

5. A method using the powder dry-pressing molding device according to claim 4 , the method comprising:
moving the pusher to align the feeding channel with the compacting space;
moving the lower punch downward to vacuumize the compacting space;
providing the powder into the compacting space;
reciprocating the pusher along the workbench part above the compacting space to scrape the powder; and
moving the upper punch downward and moving the lower punch upward to press the powder in two directions so as to form a blank.

6. The powder dry-pressing molding device according to claim 1 , wherein the upper driving mechanism comprises an upper crankshaft capable of actively rotating and two first touch pieces fixed on the upper slide block, crank arms of the upper crankshaft are located between the two first touch pieces, the rotation of the upper crankshaft enables the crank arms to be in contact with the two first touch pieces, and the first touch pieces drive the upper slide block to move up and down.

7. A method using the powder dry-pressing molding device according to claim 6 , the method comprising:
moving the pusher to align the feeding channel with the compacting space;
moving the lower punch downward to vacuumize the compacting space;
providing the powder into the compacting space;
reciprocating the pusher along the workbench part above the compacting space to scrape the powder; and
moving the upper punch downward and moving the lower punch upward to press the powder in two directions so as to form a blank.

8. The powder dry-pressing molding device according to claim 6 , wherein the lower driving mechanism comprises a lower crankshaft capable of actively rotating and two second touch pieces disposed on the lower slide block, the lower crankshaft is fixedly provided with the two second touch pieces, crank arms of the lower crankshaft are disposed between the two second touch pieces, the rotating lower crankshaft is capable of being in contact with the two second touch pieces to drive the lower slide block to move up and down, a limiting block is disposed below the lower second touch piece, and the limiting block is configured to limit the downward movement of the lower slide block.

9. A method using the powder dry-pressing molding device according to claim 8 , the method comprising:
moving the pusher to align the feeding channel with the compacting space;
moving the lower punch downward to vacuumize the compacting space;
providing the powder into the compacting space;
reciprocating the pusher along the workbench part above the compacting space to scrape the powder; and
moving the upper punch downward and moving the lower punch upward to press the powder in two directions so as to form a blank.

10. The powder dry-pressing molding device according to claim 1 , wherein the lower slide block is fixedly connected with one end of a resetting driving piece, the other end of the resetting driving piece is hinged to the rack, and the resetting driving piece is capable of driving the lower slide block to move downward to vacuumize the compacting space.

11. A method using the powder dry-pressing molding device according to claim 10 , the method comprising:
moving the pusher to align the feeding channel with the compacting space;
moving the lower punch downward to vacuumize the compacting space;
providing the powder into the compacting space;
reciprocating the pusher along the workbench part above the compacting space to scrape the powder; and
moving the upper punch downward and moving the lower punch upward to press the powder in two directions so as to form a blank.

12. The powder dry-pressing molding device according to claim 1 , wherein the periphery of a top of the mandrel is sleeved with an alloy sleeve, a bottom end of the mandrel is fixedly connected with a top end of a connecting rod, and after the connecting rod runs through the middle mold seat and the second pressure mechanism, a bottom end of the connecting rod is fixedly connected with the rack.

13. A method using the powder dry-pressing molding device according to claim 12 , the method comprising:
moving the pusher to align the feeding channel with the compacting space;
moving the lower punch downward to vacuumize the compacting space;
providing the powder into the compacting space;
reciprocating the pusher along the workbench part above the compacting space to scrape the powder; and
moving the upper punch downward and moving the lower punch upward to press the powder in two directions so as to form a blank.

14. The powder dry-pressing molding devi

Assignees

• Univ Qingdao Technology
• Shenyang Hongyang Prec Ceramics Co Ltd

Inventors

• Li Changhe
• Shi Mingcun
• Ma Xiangyang
• Xing Baoda
• Ma Xiaohong
• Zhang Yanbin
• Yang Min
• Cui Xin
• Gao Teng
• Wang Xiaoming
• Hou Yali
• Zhai han
• Wang Zhen
• Lu Bingheng
• Cao Huajun
• Zhang Naiqing
• Wu Qidong

Classifications

• B28B7/0097 Primary

  Press moulds; Press-mould and press-ram assemblies · CPC title

• B28B7/10

  Moulds with means incorporated therein, or carried thereby, for ejecting {or detaching} the moulded article ({flexible moulds bent open for ejecting B28B7/06; ejecting by tilting or inverting the mould B28B7/08; } devices, not forming part of the mould, for ejecting the moulded article B28B13/06) · CPC title

• B28B3/086 Primary

  The rams working in different directions · CPC title

• B28B17/00

  Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping (moulds B28B7/00; after-treatment B28B11/00; feeding or discharging B28B13/00; arrangements for embedding elements in the material B28B23/00) · CPC title

• B30B11/02

  using a ram exerting pressure on the material in a moulding space · CPC title