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CN-122007420-A - Metal powder rolling feeding device and method

CN122007420ACN 122007420 ACN122007420 ACN 122007420ACN-122007420-A

Abstract

The invention discloses a metal powder rolling feeding device and method, and relates to the field of metal powder rolling equipment. The device comprises a feeding hopper, wherein a discharge hole is formed in the bottom of the feeding hopper, a movable side plate of the feeding hopper is in sliding connection with a front end plate and a rear end plate, a gap positioning mechanism for adjusting the position of the movable side plate to change the size of the discharge hole is arranged on the feeding hopper, a left stirring shaft and a right stirring shaft are arranged in the feeding hopper, a follower wheel in friction contact with a rolling mill roller is connected to the end part of the stirring shaft, and an adjustable baffle mechanism positioned between the two stirring shafts is also arranged in the feeding hopper. The method is based on the device, the size of a discharge hole is synchronously adjusted along with the roll gap by matching a gap positioning mechanism with a replaceable discharge nozzle plugboard, the angle of a baffle plate is adjusted by swinging the positioning mechanism to control the thickness proportion of the composite layer, and a roller drives a follower wheel to drive a stirring shaft to rotate. The invention can improve the feeding uniformity, is suitable for different roller gap specifications, and realizes the accurate layering control of the composite material.

Inventors

  • XIE ZHONGREN
  • Xie Jinghuan
  • YANG RIKUI

Assignees

  • 深圳市恒歌科技有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. The metal powder rolling feeding device comprises a feeding hopper arranged on a rolling mill frame (20), wherein a discharge hole is formed in the bottom of the feeding hopper and is positioned between two rolling mill rollers (19) rotating on the rolling mill frame (20), and the metal powder rolling feeding device is characterized by comprising a front end plate (12), a rear end plate (10), a fixed side plate (11) and a movable side plate (7); The front end plate (12) and the rear end plate (10) are fixedly arranged relative to the rolling mill stand (20), the front end and the rear end of the fixed side plate (11) are fixedly connected with the right end of the front end plate (12) and the right end of the rear end plate (10) respectively, and the movable side plate (7) is positioned between the front end plate (12) and the rear end plate (10) and is in sliding connection with the front end plate (12) and the rear end plate (10) respectively along the left-right direction; The feeding hopper is also provided with a gap positioning mechanism (4) for adjusting the position of the movable side plate (7) so as to change the size of the discharge hole; A left stirring shaft (15) and a right stirring shaft (15) are also arranged in the feed hopper, and two ends of the stirring shaft (15) are respectively and rotatably connected with the front end plate (12) and the rear end plate (10); an adjustable baffle mechanism is also arranged in the feed hopper, and the baffle mechanism is positioned between the two groups of stirring shafts (15).
  2. 2. The metal powder rolling feeding device as set forth in claim 1, wherein the feed hopper further comprises a fixed plate (6) connected between the left end of the front end plate (12) and the left end of the rear end plate (10); The clearance positioning mechanism (4) comprises a first shell (401) arranged on the fixed plate (6), a first worm (403) arranged on the first shell (401) in a rotating connection mode, and a first worm wheel (404) arranged on the first shell (401) in a rotating connection mode and meshed with the first worm (403); the outer side face of the movable side plate (7) is fixedly connected with a threaded rod (701), and the threaded rod (701) penetrates through the fixed plate (6) and is matched with the threaded hole on the first worm wheel (404).
  3. 3. The metal powder rolling feeding device according to claim 2, wherein the outer side surface of the movable side plate (7) is provided with a front threaded rod (701) and a rear threaded rod (701), and the fixed plate (6) is provided with two groups of clearance positioning mechanisms (4) which are in one-to-one correspondence with the threaded rods (701); The first worms (403) are horizontally arranged, and the inner ends of the first worms (403) of the two groups of clearance positioning mechanisms (4) are connected through connecting rods (5) to realize synchronous rotation.
  4. 4. The metal powder rolling feeding device as set forth in claim 1, wherein the front end and the rear end of the movable side plate (7) are provided with an upper sliding plate (702) and a lower sliding plate (703), and the upper sliding plate (702) and the lower sliding plate (703) are respectively in sliding fit with a front end plate (12) or a rear end plate (10) on the corresponding side; the lower sliding plate (703) is matched with sliding grooves formed in the outer sides of the front end plate (12) and the rear end plate (10), a bearing seat (704) is arranged on the lower sliding plate (703), and the end part of the stirring shaft (15) close to the movable side plate (7) penetrates through a kidney-shaped hole formed in the front end plate (12) or the rear end plate (10) and is rotationally connected with the bearing seat (704) through a bearing, so that synchronous movement of the stirring shaft (15) and the movable side plate (7) is realized.
  5. 5. The metal powder rolling feeding device according to claim 1, wherein the end part of the stirring shaft (15) is further connected with a follower wheel (13) positioned outside the feeding hopper, and the follower wheel (13) is used for being in friction contact with the surface of a rolling mill roller (19).
  6. 6. The metal powder rolling feeding device as claimed in claim 1, wherein the baffle mechanism comprises a fixed baffle (9) and a swinging baffle (17); the fixed partition plate (9) is vertically arranged, and the front end and the rear end are respectively and fixedly connected with the front end plate (12) and the rear end plate (10); the top of the swing partition plate (17) is fixedly connected with a swing shaft (16), and the swing shaft (16) is rotationally connected with the bottom end of the fixed partition plate (9); the baffle mechanism also comprises a swing positioning mechanism (14) for driving the swing shaft (16) to rotate.
  7. 7. The metal powder rolling feeding device as set forth in claim 6, wherein the swing positioning mechanism (14) comprises a second housing (1401) mounted on the outer side surface of the front end plate (12) or the rear end plate (10), a second worm (1402) mounted on the second housing (1401) in a rotating connection manner, and a second worm wheel (1404) mounted on the second housing (1401) in a rotating connection manner and meshed with the second worm (1402), and the second worm wheel (1404) is fixedly mounted on the end of the swing shaft (16).
  8. 8. The metal powder rolling feeding device as claimed in claim 1, wherein the front end bottom and the rear end bottom of the fixed side plate (11) and the movable side plate (7) are respectively provided with a protruding part protruding downwards, the outer sides of the protruding parts are provided with concave arc surfaces which are used for being matched with rolling mill rollers (19) on the same side, and the two protruding parts on the same side form a duckbill structure; The inner side surface of the protruding part is provided with a groove, a discharge spout inserting plate (8) is further arranged between the two protruding parts on the same side, and protruding blocks on two sides of the discharge spout inserting plate (8) are embedded into the groove.
  9. 9. The metal powder rolling feeding device according to claim 1, further comprising a fixed mounting plate (1) and a fixed bolt (2); The fixed mounting plate (1) is fixedly connected with the feed hopper, the fixed bolt (2) downwards passes through a through hole in the fixed mounting plate (1), and a spring (3) is arranged between the head of the fixed bolt (2) and the fixed mounting plate (1).
  10. 10. A metal powder rolling feeding method is characterized in that the method is based on the metal powder rolling feeding device of claim 1; The bottoms of the front end and the rear end of the fixed side plate (11) and the movable side plate (7) are respectively provided with a protruding part protruding downwards, the outer sides of the protruding parts are provided with inward concave arc surfaces which are used for being matched with rolling mill rollers (19) on the same side, and the two protruding parts on the same side form a duckbill structure; The end part of the stirring shaft (15) is also connected with a follower wheel (13) positioned at the outer side of the feed hopper, and the follower wheel (13) is used for being in friction contact with the surface of a rolling mill roller (19); The baffle mechanism comprises a fixed baffle (9) and a swinging baffle (17), wherein the fixed baffle (9) is vertically arranged, the front end and the rear end are respectively and fixedly connected with a front end plate (12) and a rear end plate (10), the top of the swinging baffle (17) is fixedly connected with a swinging shaft (16), the swinging shaft (16) is rotationally connected with the bottom end of the fixed baffle (9), and the baffle mechanism further comprises a swinging position adjusting mechanism (14) for driving the swinging shaft (16) to rotate; Before rolling, adjusting two rolling mill rolls (19) to increase the distance between the two rolling mill rolls, driving a movable side plate (7) to be far away from a fixed side plate (11) through a gap positioning mechanism (4), taking down an original installed leakage nozzle inserting plate (8), selecting the leakage nozzle inserting plate (8) with matched size according to the target distance between new rolling mill rolls (19), putting the leakage nozzle inserting plate into a gap of a duckbill structure, driving the movable side plate (7) to be close to the fixed side plate (11) through the gap positioning mechanism (4), clamping the leakage nozzle inserting plate (8), adjusting the rolling mill rolls (19) to the new target distance, ensuring that the rolling mill rolls (19) are contacted with follow-up wheels (13) on the same side, and then operating a swinging positioning mechanism (14) according to the thickness ratio of two sublayers in a plate to be pressed, and adjusting the angle of a swinging partition plate (17) to enable the distance ratio between the lower edge of the swinging partition plate (17) and the inner edge of the two rolling mill rolls (19) to be consistent with the required sublayer thickness ratio; During rolling, the rolling mill rollers (19) rotate and drive the follower wheels (13) to synchronously rotate through friction, the follower wheels (13) drive the stirring shafts (15) to rotate, different metal powder is respectively put into the feed hopper from two sides of the fixed partition plate (9), and the powder enters a gap between the two rolling mill rollers (19) after being stirred by the stirring shafts (15) and is rolled into a plate under the action of the rolling mill rollers (19).

Description

Metal powder rolling feeding device and method Technical Field The invention relates to the field of metal powder rolling equipment, in particular to a metal powder rolling feeding device and method. Background The powder rolling technology is an advanced forming method for directly preparing metal powder into a strip through a rolling mill, wherein rolling of stainless steel powder and titanium powder has important application value in the field of special material preparation. The feeding device is used as core equipment in the powder metallurgy rolling process, and has the function of uniformly and continuously conveying powder to a roller gap area, and the running stability of the device directly determines the rolling forming quality, the production efficiency and the performance index of a final product. The prior powder rolling feeding device has the following technical problems in practical application that firstly, because the powder characteristics of stainless steel powder and titanium powder are obviously different, the mobility of coarse powder, fine powder and other powder with different particle sizes is different, the flow of the powder which is easy to agglomerate in the feeding process is unstable, and the phenomenon of uneven density of a rolled blank body is caused. Secondly, the adaptability of the equipment to the change of the roll gap is poor, when products with different thickness specifications are produced, the roll gap can only be adjusted, but the size of an outlet of the feeding device is unchanged, the adjustment can not be carried out according to the change of the roll gap size, and the problems of powder leakage or blockage are easy to occur. Thirdly, when preparing the multi-layer composite or gradient functional material, two kinds of powder need to be simultaneously supplied in the same hopper in an isolated manner, and the transverse proportion of each layer of powder is precisely controlled, but the existing device lacks an effective layering adjustment mechanism, so that the thickness of each sublayer of the composite board is uneven, the interface is uneven, and the rolling process requirement of the high-performance composite material is difficult to meet. Disclosure of Invention The invention provides a metal powder rolling feeding device and a metal powder rolling feeding method, which aim to firstly improve the feeding instability phenomenon caused by powder flowability difference and ensure uniform density of a rolled blank, secondly improve the adaptability of the feeding device to roll gap change of a roller, solve the problem of powder leakage or material blockage caused by incapability of adjusting an outlet along with the roll gap, and thirdly realize precise control of the isolation feeding and transverse proportion of different powder in the multi-layer composite or gradient functional material rolling process so as to ensure uniform thickness and straight interface of each sublayer of a composite plate. The technical scheme of the invention is as follows: The metal powder rolling feeding device comprises a feeding hopper arranged on a rolling mill frame, wherein a discharge hole is formed in the bottom of the feeding hopper and is positioned between two rolling mill rollers which rotate on the rolling mill frame, and the feeding hopper comprises a front end plate, a rear end plate, a fixed side plate and a movable side plate; The front end plate and the rear end plate are fixedly arranged relative to the rolling mill frame, the front end and the rear end of the fixed side plate are respectively fixedly connected with the right end of the front end plate and the right end of the rear end plate, and the movable side plate is positioned between the front end plate and the rear end plate and is respectively connected with the front end plate and the rear end plate in a sliding way along the left-right direction; The feeding hopper is also provided with a gap positioning mechanism for adjusting the position of the movable side plate so as to change the size of the discharge hole; A left stirring shaft and a right stirring shaft are further arranged in the feed hopper, and two ends of the stirring shaft are respectively and rotatably connected with the front end plate and the rear end plate; The inside of the feed hopper is also provided with an adjustable baffle mechanism, and the baffle mechanism is positioned between the two groups of stirring shafts. The feeding hopper also comprises a fixed plate connected between the left end of the front end plate and the left end of the rear end plate; the gap positioning mechanism comprises a first shell arranged on the fixed plate, a first worm arranged on the first shell in a rotating connection mode, and a first worm wheel arranged on the first shell in a rotating connection mode and meshed with the first worm; The outer side surface of the movable side plate is fixedly connected with a threaded rod, and the thread