CN103586341A - Punch with hydraulic protector - Google Patents
Punch with hydraulic protector Download PDFInfo
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- CN103586341A CN103586341A CN201310440979.XA CN201310440979A CN103586341A CN 103586341 A CN103586341 A CN 103586341A CN 201310440979 A CN201310440979 A CN 201310440979A CN 103586341 A CN103586341 A CN 103586341A
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- drift
- piston
- hydraulic cylinder
- punch
- backboard
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Abstract
The invention discloses a punch with a hydraulic protector. The punch comprises a punch upper die base, and a punch body and a push bar disposed below the punch upper die base. The punch bar is connected with an alarm detection bar. The lowermost end of the punch body is higher than the lowermost end of the push bar. A hydraulic cylinder is embedded onto the punch upper die base. A punch piston is disposed in the hydraulic cylinder. The punch body is connected to the bottom of the punch piston. A balance piston is disposed at the top of the punch piston and movably connected with the punch piston. A hydraulic cylinder cover is disposed at the top of the balance piston. The push bar penetrates the bottom of the punch upper die base and the bottom of the hydraulic cylinder and is movably connected to the punch upper die base. The upper end face of the push bar is below the balance piston. The punch with the hydraulic protector has the advantages that the punch body is avoided colliding with other parts of an upper die, vibrations and noise are reduced, and the punch body and the other parts of the upper die are protected from damage.
Description
Technical field
The present invention relates to stamping technology field, relate in particular to a kind of drift that is provided with protective device.
Background technology
Punch press is equipment conventional in machining, and drift is mounted in the part of upper die of stamping die, and drift, along with patrix down moves, makes plate generation deformation, cuts etc., completes punch process.General drift is directly fixedly mounted on the patrix of diel, and punch press is in punching course, and when drift punching press plate, drift will be subject to an impulsive force making progress, and drift and patrix parts are shaken, and produces noise.When counterdie sword plate rotates, if the plate of punching press is non-circular, such as rectangle, the material-dropping hole on counterdie sword plate is also rectangle, drift is also rectangle, drift is during toward undershoot, if deviation occurs the material-dropping hole position on drift and counterdie sword plate, drift will bump with counterdie sword plate, make drift be subject to impulsive force upwards, other part parts of drift and patrix bump, and produce vibrations and noise, and other part parts of drift and patrix easily damage.Chinese patent Granted publication number: CN102716974A, Granted publication day: 2012.10.10, discloses a kind of punching press drift, for diel.Upper punch and low punch, consist of, described upper punch upper end is provided with clamping platform, and described low punch bottom is provided with connecting screw hole, and described upper punch bottom and low punch top are provided with upper impulse face and the lower impulse face cooperatively interacting.Although the impulse force of this structure energy mitigation on drift, can not avoid other part parts of drift and patrix to bump, and produces vibrations and noise, can not avoid other part parts of drift and patrix to be damaged.
Summary of the invention
The problem to be solved in the present invention is, for the defect of prior art, provides a kind of drift with hydraulic protector, avoids other part parts of drift and patrix to bump, and reduces vibrations and noise, avoids the damage of other part parts of drift and patrix.
Object of the present invention is achieved through the following technical solutions.A kind of drift with hydraulic protector, comprise punch die upper bolster, be arranged on the drift of punch die upper bolster downside, on described punch die upper bolster, be embedded with a hydraulic cylinder, in hydraulic cylinder, be provided with a drift piston, the upper end of drift piston is positioned at hydraulic cylinder, the lower end of drift piston is through the first through hole of hydraulic cylinder bottom surface, the external diameter of drift piston upper end is greater than the internal diameter of the first through hole, drift is connected to the downside of drift piston, the upside of drift piston is provided with a dummy piston, drift piston is flexibly connected with dummy piston, the upside of dummy piston is provided with a hydraulic cylinder, between drift piston and dummy piston, be provided with the first gap, one side of hydraulic cylinder is provided with a unloading port, one side of unloading port communicates with the emptying passage on punch die upper bolster, between the upside of dummy piston and hydraulic cylinder, be provided with the second gap, one side of hydraulic cylinder is provided with a hydraulic oil entrance, hydraulic oil entrance communicates with the second gap, dummy piston is provided with the second through hole, the second through hole is through to lower surface from the upper surface of dummy piston, the downside of punch die upper bolster is also provided with push rod, push rod is connected with alarm detection bar, drift height is bottom higher than push rod height bottom, push rod is through punch die upper bolster downside and hydraulic cylinder bottom surface, be connected to movably on punch die upper bolster, the upper surface of push rod is positioned at the downside of dummy piston.The counterdie sword plate of diel is provided with locating hole, and during punching press, patrix down moves, and push rod injects the locating hole location on counterdie sword plate, drift punching press plate.When drift punching press plate, drift, by being subject to an impulsive force making progress, because this device is provided with drift piston and dummy piston at drift upside, has hydraulic oil in the first gap and the second gap, extenuated the impulsive force that drift is subject to, the vibrations that alleviated drift and patrix parts.If in punching course, there is deviation in when push rod down moves and the position of locating hole, push rod and counterdie sword plate bump, push rod is subject to the thrust making progress, push rod moves upward, drive alarm detection bar, alarm detection bar makes warning device send signal, control punch press shut-down operation, meanwhile, push rod promotes dummy piston, dummy piston upwards, the first clearance distance between drift piston and dummy piston becomes large, and the first gap and unloading port connect, and the hydraulic oil in the first gap flows out from emptying passage through unloading port.Because drift height is bottom higher than push rod height bottom, when push rod is pulled to extreme higher position, drift can not encounter bottom counterdie sword plate yet, avoided other part parts of drift and patrix to bump.After punch press restarts; patrix up moves; oil pump injects hydraulic oil from hydraulic oil entrance; hydraulic oil enters the second gap; dummy piston is down motion under the effect of self gravitation and hydraulic oil pressure, and hydraulic oil enters the first gap through the second through hole, and drift piston and drift be down motion under the effect of self gravitation and hydraulic oil pressure; patrix is returned to normal condition, restarts press work.
As preferably, between described drift piston and drift, be provided with drift backboard, drift backboard is fixedly connected with drift piston and drift respectively, drift backboard is arranged in a backboard, drift backboard and backboard matched in clearance, the downside of drift backboard is provided with a fixed head, and backboard is fixedly connected with punch die upper bolster and fixed head respectively, the lower end of drift is through fixed head, and the downside of the upside of drift backboard and punch die upper bolster is provided with third space.Drift is connected with drift piston by drift backboard, makes the connection of drift more firm.
As preferably, described push rod comprises mechanical push rods and transmission rod, mechanical push rods is positioned at the lower end of transmission rod, mechanical push rods is connected in fixed head and drift backboard movably, transmission rod is through punch die upper bolster downside and hydraulic cylinder bottom surface, and the external cylindrical surface of transmission rod is provided with the groove that a circle cross section is circular arc, and alarm detection bar is set in parallel in punch die upper bolster, one end of alarm detection bar is hemispherical dome structure, and hemispherical dome structure is positioned at the groove of transmission rod.Push rod in the course of the work, after special and counterdie sword plate bumps, easily damage by the lower end of push rod, this structure pushes away bar is divided into two sections of mechanical push rods and transmission rods, and after bumping, the mechanical push rods that is positioned at lower end is easily damaged, only need to change mechanical push rods, it is convenient to change, and saves material.When mechanical push rods and counterdie sword plate bump, mechanical push rods is subject to the thrust making progress, and mechanical push rods promotes transmission rod and moves upward, and transmission rod drives alarm detection bar toward a lateral movement.
As preferably, the upper end of described drift piston is provided with a pilot hole, and pilot hole is blind hole, in the second through hole of dummy piston, is provided with a guide finger, and guide finger is connected in the second through hole and pilot hole.The accuracy of position when guide finger can guarantee that drift piston and dummy piston move up and down.
As preferably, described dummy piston is provided with two installation through holes that are through to lower surface from upper surface, and each is installed in through hole and is provided with a spring, and the upper end of spring is fixedly connected on hydraulic cylinder, and the lower end of spring is fixedly connected on drift piston.
As preferably, the external cylindrical surface of described dummy piston is provided with a circle bulge loop, and bulge loop is cylindrical, and bulge loop and hydraulic cylinder matched in clearance are provided with the 4th gap between the upper side of bulge loop and hydraulic cylinder, and the upper surface of push rod is positioned at the downside of bulge loop.When push rod promotion dummy piston up moves, if the frictional force of dummy piston and hydraulic cylinder and the gravity of dummy piston are excessive, on the one hand; push rod can not up promote dummy piston in time, make hydraulic protector ineffective, can not protect drift; on the other hand, push rod easily damages.This structure can reduce the contact area of dummy piston and hydraulic cylinder; reduce the frictional force of dummy piston and hydraulic cylinder; reduce volume and the weight of dummy piston; reduce the active force that push rod promotes dummy piston; dummy piston under promoting, push rod can up be moved in time; punch press and alarm, hydraulic protector normally plays a role, and push rod is not easy to damage.
Main beneficial effect of the present invention is, avoids other part parts of drift and patrix to bump, and reduces vibrations and noise, avoids the damage of other part parts of drift and patrix, extends the service life of drift and patrix.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
The specific embodiment
Below the present invention is described in further detail in conjunction with the accompanying drawings and embodiments:
As shown in Figure 1, a kind of drift with hydraulic protector, comprise punch die upper bolster 1, on described punch die upper bolster, offer the cylindrical hole of a step, from the upper surface of punch die upper bolster, be through to lower surface, the through hole of step is divided into three sections, the internal diameter of step through hole reduces from top to bottom gradually, in interlude through hole, be embedded with a hydraulic cylinder 6, in one section of through hole, be provided with a hydraulic cylinder 2 topmost, the concave shape structure of hydraulic cylinder for standing upside down, in hydraulic cylinder, be provided with a drift piston 4, the upper end of drift piston is positioned at hydraulic cylinder, the lower end of drift piston is through the through hole of one section of the first through hole of hydraulic cylinder bottom surface and the bottom of punch die upper bolster, the external diameter of drift piston upper end is greater than the internal diameter of the first through hole, the downside of drift piston is fixedly connected with a drift backboard 9, the downside of drift backboard is fixedly connected with drift 12, drift backboard is arranged in a backboard 8, drift backboard and backboard matched in clearance, the downside of drift backboard is provided with a fixed head 10, backboard is fixedly connected with punch die upper bolster and fixed head respectively, the lower end of drift is through fixed head, the downside of the upside of drift backboard and punch die upper bolster is provided with third space.The upside of drift piston is provided with a dummy piston 3, dummy piston is positioned at hydraulic cylinder downside, the external cylindrical surface of dummy piston is provided with a circle bulge loop, bulge loop is cylindrical, bulge loop is partly positioned at hydraulic cylinder, bulge loop and hydraulic cylinder matched in clearance, dummy piston more than bulge loop is partly positioned at the groove of hydraulic cylinder concave shape, between the bottom surface of the upper side of bulge loop and hydraulic cylinder handstand concave shape, is provided with the 4th gap.Described dummy piston is provided with two installation through holes that are through to lower surface from upper surface, and each is installed in through hole and is provided with a spring, and the upper end of spring is fixedly connected on hydraulic cylinder, and the lower end of spring is fixedly connected on drift piston.The upper end of described drift piston is provided with a pilot hole, pilot hole is blind hole, and dummy piston is provided with the second through hole, and the second through hole is through to lower surface from the upper surface of dummy piston, in the second through hole of dummy piston, be provided with a guide finger, guide finger is connected in the second through hole and pilot hole.Between drift piston and dummy piston, be provided with the first gap, one side of hydraulic cylinder is provided with a unloading port, one side of unloading port communicates with the emptying passage 7 on punch die upper bolster, between the bottom surface of the upside of dummy piston and hydraulic cylinder concave shape groove, be provided with the second gap, one side of hydraulic cylinder is provided with a hydraulic oil entrance 5, and hydraulic oil entrance communicates with the second gap.Push rod comprises mechanical push rods 13 and transmission rod 14, mechanical push rods is positioned at the lower end of transmission rod, the centre of mechanical push rods is provided with a bulge loop, on fixed head and drift backboard, be equipped with through hole, fixed head and the drift backboard place of fitting be provided with one section with the suitable hole of bulge loop, this hole and bulge loop matched in clearance, the length in this hole is greater than the length of bulge loop, mechanical push rods is connected wherein with drift backboard movably through fixed head, transmission rod is through punch die upper bolster downside and hydraulic cylinder bottom surface, the upper surface of transmission rod is positioned at the downside of dummy piston bulge loop, the external cylindrical surface of transmission rod is provided with the groove that a circle cross section is circular arc, alarm detection bar 15 is set in parallel in punch die upper bolster, one end of alarm detection bar is hemispherical dome structure, hemispherical dome structure is positioned at the groove of transmission rod, drift height is bottom higher than mechanical push rods height bottom.If in punching course, there is deviation in when push rod down moves and the position of locating hole, push rod and counterdie sword plate 11 bump, push rod is subject to the thrust making progress, push rod moves upward, drive alarm detection bar, alarm detection bar makes warning device send signal, control punch press shut-down operation, meanwhile, push rod promotes dummy piston, dummy piston upwards, the first clearance distance between drift piston and dummy piston becomes large, and the first gap and unloading port connect, and the hydraulic oil in the first gap flows out from emptying passage through unloading port.Because drift height is bottom higher than push rod height bottom, when push rod is pulled to extreme higher position, drift can not encounter bottom counterdie sword plate yet, avoided other part parts of drift and patrix to bump.After punch press restarts; patrix up moves; oil pump injects hydraulic oil from hydraulic oil entrance; hydraulic oil enters the second gap; dummy piston is down motion under the effect of self gravitation and hydraulic oil pressure, and hydraulic oil enters the first gap through the second through hole, and drift piston and drift be down motion under the effect of self gravitation and hydraulic oil pressure; patrix is returned to normal condition, restarts press work.
The above is the preferably specific embodiment of the present invention, not with this, limits practical range of the present invention.The present invention can also have other embodiment, only otherwise deviate from spirit of the present invention, and within no matter in form what kind of conversion all drops on protection scope of the present invention.
Claims (6)
1. the drift with hydraulic protector, comprise punch die upper bolster, be arranged on the drift of punch die upper bolster downside, it is characterized in that, on described punch die upper bolster, be embedded with a hydraulic cylinder, in hydraulic cylinder, be provided with a drift piston, the upper end of drift piston is positioned at hydraulic cylinder, the lower end of drift piston is through the first through hole of hydraulic cylinder bottom surface, the external diameter of drift piston upper end is greater than the internal diameter of the first through hole, drift is connected to the downside of drift piston, the upside of drift piston is provided with a dummy piston, drift piston is flexibly connected with dummy piston, the upside of dummy piston is provided with a hydraulic cylinder, between drift piston and dummy piston, be provided with the first gap, one side of hydraulic cylinder is provided with a unloading port, one side of unloading port communicates with the emptying passage on punch die upper bolster, between the upside of dummy piston and hydraulic cylinder, be provided with the second gap, one side of hydraulic cylinder is provided with a hydraulic oil entrance, hydraulic oil entrance communicates with the second gap, dummy piston is provided with the second through hole, the second through hole is through to lower surface from the upper surface of dummy piston, the downside of punch die upper bolster is also provided with push rod, push rod is connected with alarm detection bar, drift height is bottom higher than push rod height bottom, push rod is through punch die upper bolster downside and hydraulic cylinder bottom surface, be connected to movably on punch die upper bolster, the upper surface of push rod is positioned at the downside of dummy piston.
2. the drift with hydraulic protector according to claim 1; it is characterized in that; between described drift piston and drift, be provided with drift backboard; drift backboard is fixedly connected with drift piston and drift respectively; drift backboard is arranged in a backboard; drift backboard and backboard matched in clearance; the downside of drift backboard is provided with a fixed head; backboard is fixedly connected with punch die upper bolster and fixed head respectively; the lower end of drift is through fixed head, and the downside of the upside of drift backboard and punch die upper bolster is provided with third space.
3. the drift with hydraulic protector according to claim 1; it is characterized in that; described push rod comprises mechanical push rods and transmission rod; mechanical push rods is positioned at the lower end of transmission rod; mechanical push rods is connected in fixed head and drift backboard movably; transmission rod is through punch die upper bolster downside and hydraulic cylinder bottom surface; the external cylindrical surface of transmission rod is provided with the groove that a circle cross section is circular arc; alarm detection bar is set in parallel in punch die upper bolster; one end of alarm detection bar is hemispherical dome structure, and hemispherical dome structure is positioned at the groove of transmission rod.
4. according to the drift hydraulic protector described in claim 1 or 2 or 3; it is characterized in that, the upper end of described drift piston is provided with a pilot hole, and pilot hole is blind hole; in the second through hole of dummy piston, be provided with a guide finger, guide finger is connected in the second through hole and pilot hole.
5. according to the drift with hydraulic protector described in claim 1 or 2 or 3; it is characterized in that; described dummy piston is provided with two installation through holes that are through to lower surface from upper surface; each is installed in through hole and is provided with a spring; the upper end of spring is fixedly connected on hydraulic cylinder, and the lower end of spring is fixedly connected on drift piston.
6. according to the drift with hydraulic protector described in claim 1 or 2 or 3; it is characterized in that; the external cylindrical surface of described dummy piston is provided with a circle bulge loop; bulge loop is cylindrical; bulge loop and hydraulic cylinder matched in clearance; between the upper side of bulge loop and hydraulic cylinder, be provided with the 4th gap, the upper surface of push rod is positioned at the downside of bulge loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310440979.XA CN103586341B (en) | 2013-09-25 | 2013-09-25 | Punch with hydraulic protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310440979.XA CN103586341B (en) | 2013-09-25 | 2013-09-25 | Punch with hydraulic protector |
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| Publication Number | Publication Date |
|---|---|
| CN103586341A true CN103586341A (en) | 2014-02-19 |
| CN103586341B CN103586341B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310440979.XA Active CN103586341B (en) | 2013-09-25 | 2013-09-25 | Punch with hydraulic protector |
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| Country | Link |
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| CN (1) | CN103586341B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318326A (en) * | 2018-01-19 | 2018-07-24 | 浙江大学 | A kind of miniature static sounding feeler lever |
| CN110948274A (en) * | 2019-12-16 | 2020-04-03 | 齐重数控装备股份有限公司 | Screw structure with hydraulic protection function |
| CN113290903A (en) * | 2021-04-20 | 2021-08-24 | 太田机械江苏有限公司 | High-precision single-column hydraulic machine |
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| JPS58163533A (en) * | 1982-03-24 | 1983-09-28 | Aida Eng Ltd | Die device for multiple process working |
| CN201316773Y (en) * | 2008-09-09 | 2009-09-30 | 昆山施耐特机械有限公司 | Pneumatic-hydraulic punch punching-resistant safety device |
| CN201338062Y (en) * | 2009-01-09 | 2009-11-04 | 嘉兴和新精冲科技有限公司 | Automatic protective device of progressive die |
| WO2010005509A1 (en) * | 2008-07-08 | 2010-01-14 | Tyco Electronics Corporation | Tool head assemblies for pressing devices |
| CN102581200A (en) * | 2012-03-21 | 2012-07-18 | 创美工艺(常熟)有限公司 | Gas-liquid pressurized riveting machine |
| CN203018644U (en) * | 2013-01-31 | 2013-06-26 | 宁波市四通达模具制造有限公司 | Progressive die safety protection device |
| CN203565642U (en) * | 2013-09-25 | 2014-04-30 | 宁波铝台精机有限公司 | Punch with hydraulic protective device |
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2013
- 2013-09-25 CN CN201310440979.XA patent/CN103586341B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163533A (en) * | 1982-03-24 | 1983-09-28 | Aida Eng Ltd | Die device for multiple process working |
| WO2010005509A1 (en) * | 2008-07-08 | 2010-01-14 | Tyco Electronics Corporation | Tool head assemblies for pressing devices |
| CN201316773Y (en) * | 2008-09-09 | 2009-09-30 | 昆山施耐特机械有限公司 | Pneumatic-hydraulic punch punching-resistant safety device |
| CN201338062Y (en) * | 2009-01-09 | 2009-11-04 | 嘉兴和新精冲科技有限公司 | Automatic protective device of progressive die |
| CN102581200A (en) * | 2012-03-21 | 2012-07-18 | 创美工艺(常熟)有限公司 | Gas-liquid pressurized riveting machine |
| CN203018644U (en) * | 2013-01-31 | 2013-06-26 | 宁波市四通达模具制造有限公司 | Progressive die safety protection device |
| CN203565642U (en) * | 2013-09-25 | 2014-04-30 | 宁波铝台精机有限公司 | Punch with hydraulic protective device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318326A (en) * | 2018-01-19 | 2018-07-24 | 浙江大学 | A kind of miniature static sounding feeler lever |
| CN108318326B (en) * | 2018-01-19 | 2020-11-20 | 浙江大学 | Miniature static sounding probe rod |
| CN110948274A (en) * | 2019-12-16 | 2020-04-03 | 齐重数控装备股份有限公司 | Screw structure with hydraulic protection function |
| CN110948274B (en) * | 2019-12-16 | 2021-07-13 | 齐重数控装备股份有限公司 | Screw structure with hydraulic protection function |
| CN113290903A (en) * | 2021-04-20 | 2021-08-24 | 太田机械江苏有限公司 | High-precision single-column hydraulic machine |
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| Publication number | Publication date |
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| CN103586341B (en) | 2015-04-15 |
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