CN113878923B - Multifunctional ejection device of powder forming press - Google Patents
Multifunctional ejection device of powder forming press Download PDFInfo
- Publication number
- CN113878923B CN113878923B CN202111267735.7A CN202111267735A CN113878923B CN 113878923 B CN113878923 B CN 113878923B CN 202111267735 A CN202111267735 A CN 202111267735A CN 113878923 B CN113878923 B CN 113878923B
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- ejection
- piston rod
- limiting
- die
- sleeve
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- 239000000843 powder Substances 0.000 title claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 230000011664 signaling Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/32—Discharging presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a multifunctional ejection device of a powder forming press, which comprises an ejection cylinder arranged in a central hole of a base below a press main machine, wherein a piston rod of the ejection cylinder is connected with a die frame of a forming die through a connector, a plurality of connecting columns are connected to the die frame, and the upper ends of the connecting columns penetrate upwards through a lower die of the forming die and are connected with an upper die of the forming die; the top of ejecting jar is provided with draws down limit structure, draw down limit structure and be used for the accurate stroke of drawing down of adjusting the piston rod ejecting jar's bottom is provided with ejecting limit structure, and this ejecting limit structure install in the base, ejecting limit structure is used for adjusting the ejecting stroke of piston rod. The remarkable effects are as follows: not only the pull-down stroke and the ejection stroke can be accurately adjusted, but also the ejection position can be accurately controlled to meet the feeding position requirements of products with different shapes; and the three functions of ejection, loading and demoulding are integrated into a whole, so that the occupied space is small.
Description
Technical Field
The invention relates to the technical field of powder forming processing, in particular to a multifunctional ejection device of a powder forming press.
Background
The production process of the powder molding hydraulic press comprises the following steps: firstly, the piston of the ejection cylinder rises to the proper position, then the feeder advances for feeding, after feeding is completed, the feeder retreats, at the moment, the floating cylinder rises by about 5mm (powder is prevented from being sprayed outwards when the upper die is contacted with powder), then the slide block of the hydraulic press rapidly and slowly pressurizes and maintains pressure, the ejection cylinder floats downwards, the pressure of the press is relieved, and finally the slide block returns, and the ejection cylinder returns for demoulding.
However, the existing powder molding machines have the following defects: firstly, before feeding, an ejection position accurate control device is needed to meet the feeding position requirements of products with different shapes; secondly, ejection, loading and demolding are carried out by adopting different driving devices, so that the forming machine is complex in structure, large in occupied space and high in maintenance cost due to easy damage of parts.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a multifunctional ejection device of a powder forming press machine, so that the ejection position can be accurately controlled, and ejection, loading and demoulding functions can be integrated into a whole.
In order to achieve the above purpose, the invention adopts the following technical scheme:
A multifunctional ejection device of a powder forming press is characterized in that: the device comprises an ejection cylinder arranged in a central hole of a base below a main machine of the press, wherein a piston rod of the ejection cylinder is connected with a die frame of a forming die through a connector, a plurality of connecting columns are connected to the die frame, and the upper ends of the connecting columns penetrate through a lower die of the forming die upwards and are connected with an upper die of the forming die; the top of the ejection cylinder is provided with a pull-down limiting structure which is used for accurately adjusting the pull-down stroke of the piston rod, the bottom of the ejection cylinder is provided with an ejection limiting structure which is arranged in the base, and the ejection limiting structure is used for adjusting the ejection stroke of the piston rod;
The ejection limiting structure comprises an ejection limiting nut, an adjusting screw sleeve, a rotating sleeve, a turbine seat and a turbine, wherein the ejection limiting nut is fixed at the lower end of a piston rod, the adjusting screw sleeve is sleeved on the piston rod above the ejection limiting nut, the outer wall of the adjusting screw sleeve is in threaded fit with the inner wall of the rotating sleeve, the turbine is fixed on the outer wall of the rotating sleeve, the turbine seat is sleeved on the outer side of the rotating sleeve and the turbine and is fixedly connected with the lower end of a cylinder body of the ejection cylinder, the turbine is meshed with a worm fixed on one side of the turbine seat, and the worm is driven by a peripheral servo speed reducer.
Further, the pull-down limiting structure comprises a pull-down limiting block fixed on the upper portion of the piston rod and a limiting sleeve sleeved on the piston rod, the lower end of the limiting sleeve is fixedly connected with a cylinder port sleeve of the ejection cylinder, and the pull-down limiting block is located above the limiting sleeve.
Further, the pull-down limiting block is fixedly connected with the piston rod through a screw.
Further, the upper end of the rotating sleeve is turned outwards to form a supporting step, and the supporting step is limited and supported on a supporting convex edge formed on the turbine seat.
Furthermore, the lower end of the adjusting screw sleeve is connected with a signaling disc, and a position sensor group matched with the signaling disc is arranged at the lower end of the turbine seat.
The invention has the remarkable effects that:
1. the pull-down stroke and the ejection stroke of the ejection cylinder can be accurately limited through the pull-down limiting structure and the ejection limiting structure, and can be accurately adjusted, so that the ejection position is accurately controlled to meet the feeding requirements of products in different shapes;
2. The three functions of ejection, loading and demoulding are integrated into a whole, the functions are flexible, the appearance is attractive, and the occupied space is small;
3. The transmission structure is compact, the operation is stable and reliable, the regulation limiting precision is high, the operation is simple and flexible, the noise is low, and the degree of automation is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1A;
fig. 3 is an enlarged partial schematic view of B in fig. 1.
Detailed Description
The following describes the embodiments and working principles of the present invention in further detail with reference to the drawings.
As shown in fig. 1 and 2, a multifunctional ejection device of a powder forming press comprises an ejection cylinder 2 arranged in a central hole of a base 1 below a press main machine, a piston rod 21 of the ejection cylinder 2 is connected with a die frame 4 of a forming die through a connector 3, a plurality of connecting columns 5 are connected to the die frame 4, and the upper ends of the connecting columns 5 penetrate through a lower die 7 of the forming die upwards and then are connected with an upper die 6 of the forming die; the top of ejecting jar 2 is provided with draws down limit structure 8, draw down limit structure 8 is used for the accurate stroke of drawing down of adjusting piston rod 21 ejecting jar 2's bottom is provided with ejecting limit structure 9, and this ejecting limit structure 9 install in the base 1, ejecting limit structure 9 is used for adjusting the ejecting stroke of piston rod 21.
Specifically, the pull-down limiting structure 8 includes a pull-down limiting block 81 fixed on the upper portion of the piston rod 21, and a limiting sleeve 82 sleeved on the piston rod 21, the lower end of which is fixedly connected with the cylinder port sleeve 22 of the ejection cylinder 2, and the pull-down limiting block 81 is located above the limiting sleeve 82.
Further, the pull-down limiting block 81 is fixedly connected with the piston rod 21 through a screw, so that when the piston of the ejection cylinder 2 is in an initial state, the pull-down limiting block 81 can be manually adjusted, and the pull-down stroke of the ejection cylinder 2 is accurately locked and limited.
In this example, the ejection limiting structure 9 includes an ejection limiting nut 91, an adjusting screw sleeve 92, a rotating sleeve 93, a turbine seat 94 and a turbine 96, where the ejection limiting nut 91 is fixed at the lower end of the piston rod 21, the adjusting screw sleeve 92 is sleeved on the piston rod 21 above the ejection limiting nut 91, the outer wall of the adjusting screw sleeve 92 is in threaded fit with the inner wall of the rotating sleeve 93, the turbine 96 is fixed on the outer wall of the rotating sleeve 93, the turbine seat 94 is sleeved on the outer sides of the rotating sleeve 93 and the turbine 96 and fixedly connected with the lower end of the cylinder body 23 of the ejection cylinder 2, the turbine 96 is meshed with the worm 95 fixed at one side of the turbine seat 94, and the worm 95 is driven by a peripheral servo speed reducer (not shown).
Preferably, the upper end of the rotating sleeve 93 is turned outwards to form a supporting step 931, and the supporting step is supported on a supporting flange formed on the turbine seat 94 in a limited manner, so that the rotating sleeve 93 can be well fixed and can rotate without interference.
Preferably, the lower end of the adjusting screw sleeve 92 is connected with a signaling disc 97, a position sensor group 98 matched with the signaling disc 97 is installed at the lower end of the turbine seat 94, and the position of the rotating disc can be detected through the matching of the signaling disc 97 and the position sensor group 98, so that the ejection stroke data of the ejection cylinder 2 can be obtained according to the installation position calculation of the ejection limiting block, and the ejection stroke of the ejection cylinder 2 can be conveniently adjusted according to the requirement.
In the concrete implementation, the ejection cylinder 2 is fastened on the main machine base 1 through a spiral ring, high-pressure oil is transmitted into the upper cavity and the lower cavity of the ejection cylinder 2 through a high-pressure pipeline by a hydraulic system, and the piston rod 21 is driven to reciprocate, so that the functions of lifting charging, floating descending compression molding and pulling down demolding in the powder molding process are realized, in addition, a small piston is added in the end part of the main piston rod 21, and the action of the material shortage process is solved. The lifting stroke limit of the piston rod 21 is realized by driving the adjusting screw sleeve 92 and the rotating sleeve 93 to rotate by a worm wheel and a worm 95, driving is driven by a servo speed reducer, and the pulling-down limit of the piston rod 21 is realized by manually adjusting the pulling-down limit block 81 and the limit sleeve 82. Specific:
1. The T-shaped connector 3 is connected with the upper end part of the piston rod 21 through threads and is connected with a die carrier 4 for accommodating a die, so that the forming die is driven to ascend and descend; the piston is fastened on the middle part of the piston rod 21 and is matched with the inner cavity of the cylinder body 23 to do reciprocating motion through a sealing piece; the pull-down limiting block 81 is also connected with the piston rod 21 through a screw, and can accurately limit the pull-down stroke of the piston rod 21 through adjustment; the limiting sleeve 82 is fixed at the end part of the cylinder mouth sleeve 22 and plays a role in pulling down the limit; the worm wheel seat is fastened at the lower end part of the cylinder body 23 and mainly carries a worm 95 and a servo speed reducer, the worm wheel is fixed on the rotating sleeve 93, the worm 95 rotates to drive the worm wheel to rotate, so that the rotating sleeve 93 rotates, the adjusting screw sleeve 92 rotates to change the height position between the adjusting screw sleeve and the rotating sleeve 93, the adjusting screw sleeve is matched with the ejection limit nut 91 fastened at the lower end part of the piston rod 21, the function of accurately adjusting the ejection limit stroke is realized, and the rotation of the worm 95 is driven by the servo speed reducer.
2. When the piston 24 of the ejection cylinder 2 is in an initial state, the relative positions of the pull-down limiting block 81 and the limiting sleeve 82 are manually adjusted, so that the limiting pull-down stroke can be accurately locked:
3. When the piston 24 of the ejection cylinder 2 is in an initial state, the servo speed reducer is started, and the worm wheel 96 and the worm 95 are driven to rotate the adjusting screw sleeve 92, so that the ejection stroke of the piston rod 21 is accurately adjusted.
The multifunctional ejection device has the advantages of compact transmission structure, stable and reliable operation, high adjustment and limit precision, simple and flexible operation, low noise and higher degree of automation; not only the pull-down stroke and the ejection stroke can be accurately adjusted, but also the ejection position can be accurately controlled to meet the feeding position requirements of products with different shapes; and the three functions of ejection, loading and demoulding are integrated into a whole, so that the device has flexible functions, attractive appearance and small occupied space.
As can be seen from fig. 1, in this embodiment, the top of the piston rod 21 is further provided with a secondary ejection structure 10, where the secondary ejection structure 10 is used to lift the upper die 6 a certain distance for a second time under the condition that the upper die 6 is kept stationary after the ejection cylinder 2 is lifted to a specified position once through the die frame 4 and the connecting post 5, so that powder in the cavity and the upper die sink to a certain height, when the upper die descends, the powder will not have an outward-flapping phenomenon, which avoids the waste caused by the outward-flapping of the powder, and reduces the production cost. Meanwhile, the quality of the final pressing piece and the stability of mass production of products are ensured.
Specifically, as shown in fig. 3, the structure of the secondary ejection mechanism 10 includes a receiving groove 101 formed at the top of the piston rod 21, a secondary ejection piston assembly 102 is disposed in the receiving groove 101, a sealed oil cavity 103 is formed between the bottom of the receiving groove 101 and the bottom of the secondary ejection piston assembly 102, the sealed oil cavity 103 is connected with an external oil supply system through an oil path 104, a limiting plate 105 is disposed at the top of the receiving groove 101, a through hole for the secondary ejection piston assembly 102 to extend is formed in the center of the limiting plate 105, a sealing plate 106 is covered above the through hole, and the sealing plate 106 is fixedly connected with the mold frame 4.
The technical scheme provided by the invention is described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (5)
1. A multi-functional ejecting device of powder forming press, its characterized in that: the device comprises an ejection cylinder arranged in a central hole of a base below a main machine of the press, wherein a piston rod of the ejection cylinder is connected with a die frame of a forming die through a connector, a plurality of connecting columns are connected to the die frame, and the upper ends of the connecting columns penetrate through a lower die of the forming die upwards and are connected with an upper die of the forming die; the top of the ejection cylinder is provided with a pull-down limiting structure which is used for accurately adjusting the pull-down stroke of the piston rod, the bottom of the ejection cylinder is provided with an ejection limiting structure which is arranged in the base, and the ejection limiting structure is used for adjusting the ejection stroke of the piston rod;
The ejection limiting structure comprises an ejection limiting nut, an adjusting screw sleeve, a rotating sleeve, a turbine seat and a turbine, wherein the ejection limiting nut is fixed at the lower end of a piston rod, the adjusting screw sleeve is sleeved on the piston rod above the ejection limiting nut, the outer wall of the adjusting screw sleeve is in threaded fit with the inner wall of the rotating sleeve, the turbine is fixed on the outer wall of the rotating sleeve, the turbine seat is sleeved on the outer side of the rotating sleeve and the turbine and is fixedly connected with the lower end of a cylinder body of the ejection cylinder, the turbine is meshed with a worm fixed at one side of the turbine seat, and the worm is driven by a peripheral servo speed reducer; the top of piston rod still is provided with secondary ejection structure, and secondary ejection mechanism is equipped with the ejecting piston subassembly of secondary including seting up in the storage tank at piston rod top in this storage tank, form airtight oil pocket between the bottom of storage tank and the bottom of ejecting piston subassembly of secondary, this airtight oil pocket links to each other with outside oil feeding system through the oil circuit the top of storage tank is provided with the limiting plate, and the through-hole that supplies the ejecting piston subassembly of secondary to stretch out is seted up at the center of this limiting plate the top shroud of through-hole has the closing plate, and this closing plate with die carrier fixed connection.
2. The powder forming press multifunctional ejector according to claim 1, characterized in that: the pull-down limiting structure comprises a pull-down limiting block fixed on the upper portion of the piston rod and a limiting sleeve sleeved on the piston rod, the lower end of the limiting sleeve is fixedly connected with a cylinder port sleeve of the ejection cylinder, and the pull-down limiting block is located above the limiting sleeve.
3. The powder forming press multifunctional ejector according to claim 2, characterized in that: and the pull-down limiting block is fixedly connected with the piston rod through a screw.
4. The powder forming press multifunctional ejector according to claim 1, characterized in that: the upper end of the rotating sleeve is folded outwards to form a supporting step, and the supporting step is limited and supported on a supporting convex edge formed on the turbine seat.
5. The powder molding press multifunctional ejector according to claim 1 or 4, characterized in that: the lower end of the adjusting screw sleeve is connected with a signaling disc, and a position sensor group matched with the signaling disc is arranged at the lower end of the turbine seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111267735.7A CN113878923B (en) | 2021-10-29 | 2021-10-29 | Multifunctional ejection device of powder forming press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111267735.7A CN113878923B (en) | 2021-10-29 | 2021-10-29 | Multifunctional ejection device of powder forming press |
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| Publication Number | Publication Date |
|---|---|
| CN113878923A CN113878923A (en) | 2022-01-04 |
| CN113878923B true CN113878923B (en) | 2024-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111267735.7A Active CN113878923B (en) | 2021-10-29 | 2021-10-29 | Multifunctional ejection device of powder forming press |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295196A (en) * | 1996-04-26 | 1997-11-18 | Tsukimura Eng:Kk | Powder molding press |
| CN213533942U (en) * | 2020-08-17 | 2021-06-25 | 南通中液液压机有限公司 | Multiple feeding device of multi-powder full-automatic hydraulic press |
| CN216506936U (en) * | 2021-10-29 | 2022-05-13 | 重庆江东机械有限责任公司 | Multifunctional ejection mechanism of powder forming press |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4260346A (en) * | 1979-10-09 | 1981-04-07 | Anderson Jr Raymond B | Press assembly for powder material |
| KR20010086905A (en) * | 2000-03-04 | 2001-09-15 | 김영정 | Biaxial press molding system |
| CN101032870A (en) * | 2007-04-18 | 2007-09-12 | 严培义 | Adjusting mechanism of the bottom stopping point of the floated mould frame mandril of powder forming machine |
| CN203864065U (en) * | 2014-05-29 | 2014-10-08 | 南通中液液压机有限公司 | Pulling and jacking type multi-step die carrier for full-automatic digital display dry powder hydraulic machine |
| CN206241261U (en) * | 2016-11-30 | 2017-06-13 | 南通国谊锻压机床有限公司 | A kind of multi-step hydraulic press for powder formation |
| CN209811228U (en) * | 2018-11-22 | 2019-12-20 | 南通国谊锻压机床有限公司 | Five forming die frames of upper and lower three point |
| CN111959021A (en) * | 2020-08-17 | 2020-11-20 | 南通中液液压机有限公司 | Multi-station salt core product full-automatic dry powder hydraulic press |
-
2021
- 2021-10-29 CN CN202111267735.7A patent/CN113878923B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295196A (en) * | 1996-04-26 | 1997-11-18 | Tsukimura Eng:Kk | Powder molding press |
| CN213533942U (en) * | 2020-08-17 | 2021-06-25 | 南通中液液压机有限公司 | Multiple feeding device of multi-powder full-automatic hydraulic press |
| CN216506936U (en) * | 2021-10-29 | 2022-05-13 | 重庆江东机械有限责任公司 | Multifunctional ejection mechanism of powder forming press |
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| CN113878923A (en) | 2022-01-04 |
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