CN201410755Y - Restoration cylinder of powder forming machine - Google Patents
Restoration cylinder of powder forming machine Download PDFInfo
- Publication number
- CN201410755Y CN201410755Y CN2009201215039U CN200920121503U CN201410755Y CN 201410755 Y CN201410755 Y CN 201410755Y CN 2009201215039 U CN2009201215039 U CN 2009201215039U CN 200920121503 U CN200920121503 U CN 200920121503U CN 201410755 Y CN201410755 Y CN 201410755Y
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- China
- Prior art keywords
- piston rod
- exhaust passage
- cylinder
- plunger
- gland
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Abstract
The utility model relates to a restoration cylinder of a powder forming machine. The restoration cylinder is positioned under a base plate (1) and comprises a cylinder body (2), a cylinder cover (3) and a piston rod (4). An air exhaust passage communicated with both the inner side and the outer side of the cylinder is disposed on the base plate (1), the top portion of the piston rod (4) is exposedoutside the cylinder cover (3), a groove (41) is arranged at the center of the top portion of the piston rod (4), a buffer mechanism is disposed inside the groove (41), the buffer mechanism comprisesa compressing cover (5) with a T-shaped section and a through hole at the center, a plunger piston (6) with an inverted T-shaped section and a spring (7), the air exhaust passage includes a fast airexhaust passage (11) and a slow air exhaust passage (12), and an inlet (11a) of the fast air exhaust passage is rightly opposite to the very center of the top portion of the plunger piston (6). Compared with the prior art, the combination of the buffer mechanism and the slow air exhaust passage of the restoration cylinder slows the upward moving speed of the piston rod, finally realizes buffer function for the piston rod, effectively prevents collision sound caused by violent collision between the top portion of the piston rod and the base plate.
Description
Technical field
The utility model relates to the technical field of powder forming machine, especially refers in a kind of powder forming machine to connect the reset cylinder of the contiguous block on the upper punch in base plate under the crankshaft-link rod bulb slide and the shaping mould bases.
Background technology
At present, the power of powder forming machine is by the transmission of crankshaft-link rod bulb slide carriage mechanism, the slide bottom is connected with base plate, base plate links to each other with the contiguous block that is positioned at its below by reset cylinder, contiguous block then is connected with the upper punch of powder forming mould bases, also promptly, slide links to each other with the upper punch transmission with contiguous block by base plate, reset cylinder.When practical application, behind the press forming, discharge rapidly outside the cylinder from the exhaust passage of reset cylinder by the gas that is positioned at the piston rod bottom in die cavity for powder, and the end face of piston rod will collide base plate sometimes, knocks.Be groove to be set and to fill elasticity thing or soft material at the piston rod end face usually at present, to reach cushioning effect, reduce piston rod end face and base plate direct collision, still, the elastic buffer thing in use for some time, elasticity progressively weakens, feasible not ideal enough to the cushioning effect of piston rod, and, this by filling the mode of cushion, service life is not long yet, requires further improvement.
Summary of the invention
Technical problem to be solved in the utility model is the reset cylinder that provides at above-mentioned prior art present situation in a kind of powder forming machine of long service life, it is after powder is pressed shaping, during the exhaust passage of reset cylinder rapid exhaust, can effectively prevent the piston rod part base plate that clashes, and knock.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the reset cylinder in this powder forming machine, be positioned at floor below, the piston rod that it comprises cylinder body, covers the cylinder cap at cylinder body top and be positioned at cylinder body, offer on this base plate and be communicated with the inside and outside exhaust passage of cylinder, the bottom sides of this cylinder body is along being fixedly linked with described base plate, expose outside cylinder cap the bottom of this piston rod, it is characterized in that:
The center of top of described piston rod offers the groove that a cross section is the T type, be provided with a buffer gear in this groove, this buffer gear comprises that a cross section is T type and central gland with through hole, one cross section is an inverted T shape plunger and a spring, wherein, the vertical part of described gland is positioned at the vertical part of piston rod groove, and the top of gland is lower than the top of piston rod, described plunger is inserted in the through hole of gland, the lateral part outer edge of this plunger is at gland vertically under the bottom of part and can move up and down between gland and piston rod bottom portion of groove, described both ends of the spring is against between the bottom portion of groove of the bottom center of described plunger and piston rod, and makes the top of plunger have the trend at the top that is higher than described piston rod all the time;
Simultaneously, the exhaust passage on the described base plate comprises a fast exhaust passage and a slow exhaust passage, the top of the relative plunger of inlet of this fast exhaust passage.
Above-mentioned fast exhaust passage is a main exhaust passageway, its through-hole aperture more greatly, slow exhaust passage is time exhaust passage, its through-hole aperture is comparatively tiny, plunger just can be passed through in the top of piston rod, and cooperates slow exhaust passage and play cushioning effect, can not clash with base plate.
The vertical part of described gland can be connected by close-fitting with the vertical part of piston rod groove, but for the drop height between pilot plunger top and the piston rod part, and realizing adjusting to the piston rod buffering capacity, the vertical part of described gland is good to be threaded to mutually with the vertical part of piston rod groove.
For guaranteeing the pretightning force of spring to plunger base, as further improvement, the bottom center of described plunger can be provided with a projection, and an end of described spring just is set in this projection periphery, thereby prevents that effectively spring end breaks away from the bottom of plunger.
As further improvement, for the top that makes plunger can be more reliably blocks the inlet of fast exhaust passage, the top of described plunger can be provided with a pit, be provided with planar seal ring or planar sealing pad that plunger is connected with fast passageway seals in this pit, thereby by planar seal ring or planar sealing pad, and when making plunger head move to the porch of fast exhaust passage, can fully inlet seal be lived, and guarantee that slow exhaust passage has an effect effectively.
Described slow exhaust passage simply can be the tiny damping hole in an aperture, is positioned at a side of fast exhaust passage inlet, and this slow exhaust passage is connected with the outlet of fast exhaust passage; Described slow exhaust passage also can have a damping adjustable choke valve, so that the exhaust damping amount of slow exhaust passage can be regulated size as required.
Compared with prior art, advantage of the present utility model is: by soon, the gland that slow exhaust passage and piston rod part are provided with, plunger, the cooperation of the buffer gear that spring is formed, the trend that plunger is had move up all the time and be higher than the top surface of piston rod all the time, like this, when piston rod is up, air between plunger and the base plate is normally discharged outside the cylinder by fast exhaust passage, piston rod is up rapidly, until the conflict inlet of fast exhaust passage and this inlet blocked of the top of plunger, at this moment, air between plunger and the base plate is discharged outside the cylinder by slow exhaust passage lentamente, plunger conflicted and relatively piston rod move down, also promptly, spring is further compressed, by the cooperation of buffer gear and slow exhaust passage, the up translational speed of piston rod has slowed down, the final cushioning effect that realizes piston rod effectively prevents the piston rod part base plate that clashes, and knocks; And but gland passes through screw thread and the height and position of its relative piston rod of up-down adjustment, thus the drop height between pilot plunger top and the piston rod part, and realization is to the adjusting of piston rod buffering capacity.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the reset cylinder in this powder forming machine, it is arranged on base plate 1 below, comprises cylinder body 2, covers the cylinder cap 3 at cylinder body 2 tops and is positioned at the piston rod 4 of cylinder body 2;
Wherein, offer on the described base plate 1 and be communicated with the inside and outside exhaust passage of cylinder, this exhaust passage comprises a fast exhaust passage 11 and a slow exhaust passage 12, in the present embodiment, this slow exhaust passage 12 is the tiny damping holes in an aperture, be positioned at the side of fast exhaust passage 11 inlet 11a, and this slow exhaust passage 12 is connected with the outlet 11b of fast exhaust passage 11;
The bottom sides of described cylinder body 2 is along being fixedly linked with described base plate 1, expose outside cylinder cap 3 bottom of described piston rod 4, during practical application, base plate 1 is connected under the (not shown) of slide bottom, the top of piston rod 4 and contiguous block (not shown) are fixedly linked, and contiguous block then links to each other with upper punch in the shaping mould bases;
The center of top of described piston rod 4 offers the groove 41 that a cross section is the T type, is provided with a buffer gear in this groove 41, and this buffer gear comprises that a cross section is the T type and central gland 5, a cross section with through hole is an inverted T shape plunger 6 and a spring 7;
This plunger 6 can adopt any elastomeric material to make, and also can be a steel part;
Wherein, the vertical part 51 of described gland 5 is threaded in the vertical part of piston rod 4 grooves 41, and the top of gland 5 lateral parts will be lower than the top of piston rod 4;
Described plunger 6 is inserted in the through hole of gland 5, the top of the relative plunger 6 of the inlet of described fast exhaust passage 11a, lateral part 61 outer edges of this plunger 6 are positioned under the bottom of gland 5 vertical parts 51, so, plunger 6 can move up and down between gland 5 and piston rod 4 grooves 41 bottoms, described spring 7 two ends are against between groove 41 bottoms of the bottom center of described plunger 6 and piston rod 4, the bottom center that specifically is plunger 6 is provided with a projection 62, one end of spring 7 just is set in this projection 62 peripheries, and the top that makes plunger 6 has the trend at the top that is higher than piston rod 4 all the time, and the height H that these plunger 6 tops exceed piston rod 4 tops is the buffer distance of buffer gear to piston rod 4;
Simultaneously, the top of described plunger 6 is provided with a pit 63, is provided with planar seal ring 8 in this pit 63.
Claims (6)
1, the reset cylinder in a kind of powder forming machine, be positioned at base plate (1) below, the piston rod (4) that it comprises cylinder body (2), covers the cylinder cap (3) at cylinder body (2) top and be positioned at cylinder body (2), offer on this base plate (1) and be communicated with the inside and outside exhaust passage of cylinder, the bottom sides of this cylinder body (2) is along being fixedly linked with described base plate (1), expose outside cylinder cap (3) bottom of this piston rod (4), it is characterized in that:
The center of top of described piston rod (4) offers the groove (41) that a cross section is the T type, this groove is provided with a buffer gear in (41), this buffer gear comprises that a cross section is T type and central gland (5) with through hole, one cross section is an inverted T shape plunger (6) and a spring (7), wherein, the vertical part (51) of described gland (5) is positioned at the vertical part of piston rod (4) groove (41), and the top of gland (5) is lower than the top of piston rod (4), described plunger (6) is inserted in the through hole of gland (5), lateral part (61) outer edge of this plunger (6) is positioned at gland (5) vertically under the bottom of part (51) and can move up and down between gland (5) is bottom piston rod (4) groove (41), described spring (7) two ends are against between groove (41) bottom of the bottom center of described plunger (6) and piston rod (4), and make the top of plunger (6) have the trend at the top that is higher than described piston rod (4) all the time;
Simultaneously, the exhaust passage on the described base plate (1) comprises a fast exhaust passage (11) and a slow exhaust passage (12), and the inlet (11a) of this fast exhaust passage (11) is the top of plunger (6) relatively.
2, the reset cylinder in the powder forming machine according to claim 1 is characterized in that: the vertical part (51) of described gland (5) is threaded mutually with the vertical part of piston rod (4) groove (41).
3, the reset cylinder in the powder forming machine according to claim 1 is characterized in that: the bottom center of described plunger (6) is provided with a projection (62), and an end of described spring (7) just is set in this projection (62) periphery.
4, the reset cylinder in the powder forming machine according to claim 1, it is characterized in that: the top of described plunger (6) is provided with a pit (63), is provided with planar seal ring (8) or planar sealing pad that plunger (6) and fast exhaust passage (11) are tightly connected in this pit (63).
5, according to the reset cylinder in claim 1 or 2 or the 3 or 4 described powder forming machines, it is characterized in that: described slow exhaust passage (12) is the tiny damping hole in an aperture, be positioned at a side of fast exhaust passage (11) inlet (11a), and this slow exhaust passage (12) is connected with the outlet (11b) of fast exhaust passage (11).
6, according to the reset cylinder in claim 1 or 2 or the 3 or 4 described powder forming machines, it is characterized in that: described slow exhaust passage (12) has a damping adjustable choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201215039U CN201410755Y (en) | 2009-05-31 | 2009-05-31 | Restoration cylinder of powder forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201215039U CN201410755Y (en) | 2009-05-31 | 2009-05-31 | Restoration cylinder of powder forming machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201410755Y true CN201410755Y (en) | 2010-02-24 |
Family
ID=41712647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201215039U Expired - Lifetime CN201410755Y (en) | 2009-05-31 | 2009-05-31 | Restoration cylinder of powder forming machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201410755Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536951A (en) * | 2010-12-15 | 2012-07-04 | 海洋王照明科技股份有限公司 | Lamppost and extension cylinder thereof |
| CN103522576A (en) * | 2013-10-22 | 2014-01-22 | 严培义 | Undershoot springback mechanism of powder forming machine |
-
2009
- 2009-05-31 CN CN2009201215039U patent/CN201410755Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536951A (en) * | 2010-12-15 | 2012-07-04 | 海洋王照明科技股份有限公司 | Lamppost and extension cylinder thereof |
| CN102536951B (en) * | 2010-12-15 | 2014-11-05 | 海洋王照明科技股份有限公司 | Lamppost and extension cylinder thereof |
| CN103522576A (en) * | 2013-10-22 | 2014-01-22 | 严培义 | Undershoot springback mechanism of powder forming machine |
| CN103522576B (en) * | 2013-10-22 | 2015-02-25 | 宁波汇众粉末机械制造有限公司 | Undershoot springback mechanism of powder forming machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100224 Effective date of abandoning: 20090531 |