CN111451493B - Feeding device and method for pressing friction body of powder metallurgy brake pad - Google Patents
Feeding device and method for pressing friction body of powder metallurgy brake pad Download PDFInfo
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- CN111451493B CN111451493B CN202010504937.8A CN202010504937A CN111451493B CN 111451493 B CN111451493 B CN 111451493B CN 202010504937 A CN202010504937 A CN 202010504937A CN 111451493 B CN111451493 B CN 111451493B
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- feeding
- box body
- bin
- friction
- brake pad
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/004—Filling molds with powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
- B30B15/306—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds for multi-layer articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a feeding device and a method for pressing a friction body of a powder metallurgy brake pad, wherein the feeding device comprises a first feeding pipe, a second feeding pipe, a feeding box body, a first feeding bin and a second feeding bin, wherein: the feeding box body is arranged in the front-rear direction of the press table board, and the second feeding bin and the first feeding bin are integrally arranged in the feeding box body side by side in the front-rear direction; the upper end of the first feeding pipe is connected with a friction material storage barrel of the press through a feeding hose, and the lower end of the first feeding pipe is connected with a first feeding bin; the upper end of the second feeding pipe is connected with a bonding material storage barrel of the press through a feeding hose, and the lower end of the second feeding pipe is connected with a second feeding bin. Compared with the prior art, the invention has the following positive effects: the invention provides a feeding device and a feeding method for feeding and filling friction materials and bonding materials of brake pad friction bodies in one direction at one time, which solve the problem of low production efficiency of a pressing procedure and improve the utilization rate of pressing machine equipment.
Description
Technical Field
The invention relates to a feeding device and a feeding method for pressing a friction body of a powder metallurgy brake pad.
Background
Along with the development of high-speed railways in China, the reserved quantity of motor train unit trains is continuously increased, and the demand of powder metallurgy brake pads serving as core components of motor train braking systems is also continuously increased. The main friction and wear parts of the powder metallurgy brake pad are friction bodies and are main consumption parts of the brake pad. The friction body is mainly manufactured by a powder metallurgy method and is formed by processing friction materials and bonding materials through the working procedures of pressing, sintering and the like. Wherein the pressing process is one of the key process and the bottleneck process of the production of the friction body.
The structure of a feeding device for pressing a conventional powder metallurgy brake pad friction body is shown in fig. 1, and the feeding device comprises a friction material feeding box 11 positioned in the front-back direction of a female die feeding position 13 and a bonding material feeding box 12 positioned in the left-right direction of the female die feeding position 13. In the pressing process, friction material filling is carried out by the friction material feeding box 11 moving in the front-back direction, then the bonding material filling is carried out by the bonding material feeding box 12 in the left-right direction, and finally pressing, pressure maintaining and demolding are carried out. The mode that the two materials are fed and filled by the feeding boxes in two directions respectively can cause low production efficiency of a pressing procedure and low equipment utilization rate, thereby restricting the production and benefit of the brake pad friction body.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a feeding device and a feeding method for pressing a powder metallurgy brake pad friction body, aiming at overcoming the defects of the mode that the friction material and the bonding material are fed and filled twice by two feeding boxes in two directions in the pressing of the traditional brake pad friction body, and further providing a feeding device and a feeding method for feeding and filling the friction material and the bonding material once in one direction.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a material feeding unit of powder metallurgy brake lining friction member suppression, includes first conveying pipe, second conveying pipe, pay-off box body, first feed bin and second feed bin, wherein: the feeding box body is arranged in the front-rear direction of the press table board, and the second feeding bin and the first feeding bin are integrally arranged in the feeding box body side by side in the front-rear direction; the upper end of the first feeding pipe is connected with a friction material storage barrel of the press through a feeding hose, and the lower end of the first feeding pipe is connected with a first feeding bin; the upper end of the second feeding pipe is connected with a bonding material storage barrel of the press through a feeding hose, and the lower end of the second feeding pipe is connected with a second feeding bin.
The invention also provides a feeding method for pressing the friction body of the powder metallurgy brake pad, which comprises the following steps:
Step one, a feeding box body is arranged at a feeding starting point at the rightmost side of a press table board, and a friction material and a bonding material are respectively fed into two feeding bins;
step two, starting a pressing program, enabling the feeding box body to move forward, and stopping moving forward when the first feeding bin enters a feeding position in the center of the female die;
step three, the female die rises, and the first feeding bin starts to fill the friction material into the female die cavity until the filling is finished;
step four, the feeding box body retreats, and when the second feeding bin enters the feeding position in the center of the female die, the feeding box body stops retreating;
fifthly, the female die continues to rise, and the second feeding bin starts to fill the female die cavity with the bonding material until the filling is finished;
and step six, the feeding box body continuously retreats until the feeding box body returns to the feeding starting point, and feeding is finished.
Compared with the prior art, the invention has the following positive effects:
the invention provides a feeding device and a feeding method for feeding and filling friction materials and bonding materials of brake pad friction bodies in one direction at one time, which solve the problem of low production efficiency of a pressing process, improve the utilization rate of pressing machine equipment and improve the economic benefit of enterprises. The method has the following specific advantages:
(1) the friction material and the bonding material of the brake pad friction body are pressed into the feeding device to be optimally designed, and the two feeding boxes are optimally designed into an integrated feeding box;
(2) The invention optimally designs the pressing and feeding mode of the friction material and the bonding material of the brake pad friction body, and optimally designs the twice feeding in the front-back direction and the left-right direction into the once feeding in the front-back direction.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a feeding device for pressing a friction body of a conventional powder metallurgy brake pad;
FIG. 2 is a schematic structural view of the integrated feed box of the present invention;
FIG. 3 is a schematic view of the position of the starting point of the feed cassette of the present invention;
FIG. 4 is a schematic view of the friction material feed position of the present invention;
FIG. 5 is a schematic illustration of the friction material fill of the present invention;
FIG. 6 is a schematic view of the bonding material feed position of the present invention;
FIG. 7 is a schematic illustration of the bond material fill of the present invention;
FIG. 8 is a schematic view of the powder metallurgy brake pad friction body pressing of the present invention.
Detailed Description
A feeding device for pressing a powder metallurgy brake pad friction body, as shown in fig. 2, comprising: first conveying pipe 1, second conveying pipe 2, pay-off box body 3, first pay-off storehouse 4, second pay-off storehouse 5 and scrape material bottom plate 6 etc. wherein:
the upper end of the first feeding pipe 1 is connected with a friction material storage barrel of a press through a feeding hose, and the lower end of the first feeding pipe is connected with a first feeding bin 4; the upper end of the second feeding pipe 2 is connected with a bonding material storage barrel of the press through a feeding hose, and the lower end is connected with a second feeding bin 5; the scraping bottom plate 6 is arranged at the bottom of the feeding box body 3 through a positioning bolt, plays a role in material sealing and protecting the feeding box body in the feeding process, avoids material overflow from the bin body and material waste, and simultaneously prevents the feeding box body and the feeding bin from being worn in the feeding process.
The two feeding pipes are stainless steel pipes with the pipe diameter of 40mm, and the two feeding bins are stainless steel bin bodies with the volume of 1.2L; the whole feeding box is also made of stainless steel, and the volume of the whole box body is about 2.5L; the scraping bottom plate is a tin bronze plate with the thickness of about 10mm and the outline matched with the outlines of the two feeding bins and the bottom surface of the feeding box body.
The feeding box body 3 is arranged in the front-back direction of the press table board, and the second feeding bin 5 and the first feeding bin 4 are integrally arranged in the feeding box body 3 side by side in the front-back direction.
The feeding box body is connected with the servo hydraulic device, the movement speed and the position of the feeding box body are controlled through the servo hydraulic device, and feeding accuracy is achieved.
The invention also provides a feeding method for pressing the friction body of the powder metallurgy brake pad, which comprises the following steps:
step one, a feeding box body 3 is arranged at a feeding starting point (the rightmost side shown in figure 3), and two feeding pipes are used for respectively feeding friction materials and bonding materials into two feeding bins;
step two, starting a pressing program, driving the feeding box body to move forward through a servo hydraulic device, and stopping the feeding box from moving forward when the friction material feeding bin (namely the first feeding bin 4) enters a feeding position at the center of the female die (as shown in figure 4);
Thirdly, the hydraulic oil cylinder of the press drives the female die to ascend, the lower punch moves downwards relative to the female die cavity, and the friction material in the first feeding bin 4 freely falls through gravity to fill the female die cavity until the filling is finished, as shown in fig. 5;
step four, the feeding box body is driven by a servo hydraulic device to start to retreat, and when the bonding material feeding bin (namely the second feeding bin 5) enters a feeding position in the center of the female die (as shown in figure 6), the feeding box stops retreating;
fifthly, the hydraulic oil cylinder of the press drives the female die to continuously rise, the lower punch continuously moves downwards relative to the female die cavity, the bonding material in the second feeding bin 5 freely falls through gravity to fill the female die cavity until the filling is finished, and the step is shown in fig. 7;
step six, the feeding box body is driven by a servo hydraulic device to continuously retreat until the feeding starting point shown in the figure 3 is returned; the press then begins pressing, holding pressure, demolding, etc., as shown in fig. 8.
The feeding principle of the invention is as follows:
the integrated feeding box is arranged in the front-back direction of the table board of the press and is positioned at a feeding starting point, and the two feeding pipes are used for respectively feeding friction materials and bonding materials into the feeding bin; starting a pressing program, enabling the feeding box to move forward, and enabling the friction material feeding bin to enter a feeding position in the center of the female die; the female die rises, and the friction material feeding bin starts to fill the friction material into the female die cavity until the filling is finished; the feeding box retreats, and the bonding material feeding bin enters a feeding position in the center of the female die; the female die continues to rise, and the bonding material feeding bin starts to fill the bonding material into the female die cavity until the filling is finished; the feeding box returns to the feeding starting point, and the press starts to perform actions such as pressing, pressure maintaining, demoulding and the like.
The invention reduces the number of the feeding boxes and the feeding times by the feeding mode of feeding and filling the friction material and the bonding material in one direction, greatly improves the production efficiency of the pressing procedure and has good economic benefit.
Claims (8)
1. A feeding method for pressing a friction body of a powder metallurgy brake pad comprises a feeding device, wherein the feeding device comprises a first feeding pipe, a second feeding pipe, a feeding box body, a first feeding bin and a second feeding bin, wherein: the feeding box body is arranged in the front-rear direction of the press table board, and the second feeding bin and the first feeding bin are integrally arranged in the feeding box body side by side in the front-rear direction; the upper end of the first feeding pipe is connected with a friction material storage barrel of the press through a feeding hose, and the lower end of the first feeding pipe is connected with a first feeding bin; the upper end of the second feeding pipe is connected with a bonding material storage barrel of the press through a feeding hose, and the lower end of the second feeding pipe is connected with a second feeding bin; the feeding box body is connected with the servo hydraulic device; the method is characterized in that: the method comprises the following steps:
step one, a feeding box body is arranged at a feeding starting point at the rightmost side of a press table board, and friction materials and bonding materials are respectively fed into two feeding bins;
step two, starting a pressing program, enabling the feeding box body to move forward, and stopping moving forward when the first feeding bin enters a feeding position in the center of the female die;
Step three, the female die rises, and the first feeding bin starts to fill the friction material into the female die cavity until the filling is finished;
step four, the feeding box body retreats, and when the second feeding bin enters the feeding position in the center of the female die, the feeding box body stops retreating;
fifthly, the female die continues to rise, and the second feeding bin starts to fill the female die cavity with the bonding material until the filling is finished;
and step six, the feeding box body continuously retreats until the feeding box body returns to the feeding starting point, and feeding is finished.
2. The feeding method for compacting the friction body of the powder metallurgy brake pad as claimed in claim 1, wherein: and the bottom of the feeding box body is provided with a scraping bottom plate through a positioning bolt, and the outline of the scraping bottom plate is matched with the outlines of the bottom surfaces of the two feeding bins and the feeding box body.
3. The feeding method for compacting the friction body of the powder metallurgy brake pad as claimed in claim 2, wherein: the scraping bottom plate is made of a tin bronze plate with the thickness of 10 mm.
4. The feeding method for compacting the friction body of the powder metallurgy brake pad as claimed in claim 1, wherein: the conveying pipe is a stainless steel pipe with the pipe diameter of 40 mm.
5. The feeding method for compacting the friction body of the powder metallurgy brake pad as claimed in claim 1, wherein: the feeding bin is a stainless steel bin body with the volume of 1.2L.
6. The feeding method for compacting the friction body of the powder metallurgy brake pad as claimed in claim 1, wherein: the feeding box body is made of stainless steel materials and is 2.5L in volume.
7. The feeding method for compacting the friction body of the powder metallurgy brake pad as claimed in claim 1, wherein: the moving speed, the position, the advancing, the retreating and the stopping of the feeding box body are all controlled by a servo hydraulic device.
8. The feeding method for compacting the friction body of the powder metallurgy brake pad as claimed in claim 1, wherein: the lifting of the female die is driven by a hydraulic oil cylinder of the press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010504937.8A CN111451493B (en) | 2020-06-05 | 2020-06-05 | Feeding device and method for pressing friction body of powder metallurgy brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010504937.8A CN111451493B (en) | 2020-06-05 | 2020-06-05 | Feeding device and method for pressing friction body of powder metallurgy brake pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111451493A CN111451493A (en) | 2020-07-28 |
| CN111451493B true CN111451493B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010504937.8A Active CN111451493B (en) | 2020-06-05 | 2020-06-05 | Feeding device and method for pressing friction body of powder metallurgy brake pad |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08176607A (en) * | 1994-12-28 | 1996-07-09 | Fuji Oozx Inc | Powder feeding box having die surface cleaning mechanism for compression molding machine |
| CN201446223U (en) * | 2009-06-23 | 2010-05-05 | 诸城市同翔机械有限公司 | Double-feed-bin conveying shoe of powder metallurgy forming press |
| CN202427940U (en) * | 2011-11-20 | 2012-09-12 | 扬州市海力精密机械制造有限公司 | Power forming machine |
| CN206287572U (en) * | 2016-12-28 | 2017-06-30 | 北京天仁道和新材料有限公司 | A kind of feed mechanism and compression molding device |
| CN209303709U (en) * | 2018-11-23 | 2019-08-27 | 歌尔科技有限公司 | Powder metallurgic forming machines and its powder feeder |
| CN212285859U (en) * | 2020-06-05 | 2021-01-05 | 中铁隆昌铁路器材有限公司 | Feeding device for pressing friction body of powder metallurgy brake pad |
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- 2020-06-05 CN CN202010504937.8A patent/CN111451493B/en active Active
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| CN111451493A (en) | 2020-07-28 |
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