CN204524144U - Liftout attachment on forcing press - Google Patents

Liftout attachment on forcing press Download PDF

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Publication number
CN204524144U
CN204524144U CN201520070257.4U CN201520070257U CN204524144U CN 204524144 U CN204524144 U CN 204524144U CN 201520070257 U CN201520070257 U CN 201520070257U CN 204524144 U CN204524144 U CN 204524144U
Authority
CN
China
Prior art keywords
liftout attachment
slide block
forcing press
crossbeam
guide rail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520070257.4U
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Chinese (zh)
Inventor
李江国
徐超
陈贺静
车卫红
李海涛
潘庆元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY (JIANGLE) SEMI SOLID TECHNOLOGY INSTITUTE Co Ltd
Beijing Research Institute of Mechanical and Electrical Technology
Original Assignee
CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY (JIANGLE) SEMI SOLID TECHNOLOGY INSTITUTE Co Ltd
Beijing Research Institute of Mechanical and Electrical Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY (JIANGLE) SEMI SOLID TECHNOLOGY INSTITUTE Co Ltd, Beijing Research Institute of Mechanical and Electrical Technology filed Critical CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY (JIANGLE) SEMI SOLID TECHNOLOGY INSTITUTE Co Ltd
Priority to CN201520070257.4U priority Critical patent/CN204524144U/en
Application granted granted Critical
Publication of CN204524144U publication Critical patent/CN204524144U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

Liftout attachment on a kind of forcing press, comprise several upper ejector pins (1) for ejecting workpiece, described upper liftout attachment is suitable for coordinating with the press ram that can linearly reciprocatingly slide (2), with make described press ram (2) upwards backhaul time by described upper liftout attachment, described workpiece is ejected, described upper liftout attachment also comprises the upper ejecting mechanism that is symmetrically set in described slide block (2) both sides and to be connected to described in two between upper ejecting mechanism and the crossbeam (3) corresponding with described several upper ejector pins (1).The utility model solves the limitation of prior art, and be specially adapted to large nominal force-stroke cold forging forcing press and have nominal working stroke greatly, shaping district slide block (2) movement velocity is slow and steady, slide block (2) opening speed feature faster.

Description

Liftout attachment on forcing press
Technical field
The utility model relates to a kind of upper liftout attachment of forcing press, and particularly liftout attachment on one large nominal force-stroke cold forging forcing press, belongs to Cold Forging technical field.
Background technology
It is large that large nominal force-stroke cold forging forcing press has nominal working stroke, shaping district slide block movement speed is slow and steady, slide block opening speed feature faster, on it, liftout attachment is used for, when slide block backhaul, workpiece is ejected patrix, prevents workpiece to be stained with mould, causes the interruption of automated job, therefore, require movement velocity and the slide block opening speed exact matching of the upper liftout attachment of large nominal force-stroke cold forging forcing press, eject steadily reliable, and ejection stroke is enough large.
But the upper liftout attachment of current domestic usual employing all has different limitation, be difficult to the technical need meeting cold forging forcing press and cold-forging technique completely.The upper liftout attachment of current domestic pressure machine mainly adopts following three kinds of structures:
First, nitrogen spring or Compress Spring structure, this structure ejects workpiece by the pre-compression force of spring, generally do not have resetting-mechanism, upper ejector pin often ejects, when Forging Operation, workpiece must be relied on upper ejector pin and ejecting mechanism compression to be gone back, then, when slide block backhaul, the compression stress release of spring, ejects workpiece.The prior art structure is simple, and it is accurate to eject opportunity, but exerts oneself limited due to spring top, when knockout press requires larger, the pre-compression force of spring is difficult to the workpiece ejected in die cavity, causes and is stained with mould, eject reliability low, and spring easily lost efficacy, liftout attachment service life in impact.
Second, mechanical cam formula structure, this structure installs an oscillating cam on connecting rod, during eccentric shaft turns, connecting rod swings around the connecting pin of itself and slide block, and driving cam swings around the connecting pin of itself and slide block, thus pushing rolling wheels moves up and down, drive ejects crossbeam to move up and down, promote upper ejector pin and move up and down.The prior art parts are many, complex structure, although it is reliable and stable to eject workpiece, because cam swings angle is less, and swing speed controls by eccentric shaft and connecting rod completely, and therefore its ejection stroke is generally no more than 50mm, can not meet large ejection stroke requirement.
3rd, fluid pressure type structure, adopts Driven by Hydraulic Cylinder crossbeam and upper ejector pin motion.The prior art structure is simple, but due to hydraulic system pressure and ejection cylinder internal diameter less, cause ejecting force also less, if knockout press is excessive, workpiece can be caused to be stuck in mould, and hydraulic oil have compressibility, when overcoming knockout press, inevitably produce impulsive force, thus cause the unstability ejected, therefore, the reliability of hydraulic pressure ejection system is lower, and hydraulic system also has leakage problem, maintenance is inconvenient.In addition, the movement velocity of hydraulic cylinder is slower than the opening speed of slide block, so push rod movement velocity is more a lot of slowly than slide block movement speed, thus when causing slide block backhaul, ejecting action can be seriously delayed, thus may cause the instability that workpiece ejects.
In sum, current domestic conventional upper liftout attachment all has different limitation, is difficult to meet the different demands of forcing press in workpiece manufacture process.
Utility model content
For this reason, on the forcing press that technical problem to be solved in the utility model is prior art, liftout attachment can not meet the problem of forcing press different demand in workpiece manufactures, thus provides liftout attachment on a kind of forcing press that can meet forcing press different demand in workpiece manufactures.
For solving the problems of the technologies described above, the utility model have employed following technical scheme:
Liftout attachment on a kind of forcing press, comprise several upper ejector pins for ejecting workpiece, described upper liftout attachment is suitable for coordinating with the press ram that can linearly reciprocatingly slide, with make described press ram upwards backhaul time by described upper liftout attachment, described workpiece is ejected, described upper liftout attachment also comprises the upper ejecting mechanism that is symmetrically set in described slide block both sides and to be connected to described in two between upper ejecting mechanism and the crossbeam corresponding with several upper ejector pins described, described upper ejecting mechanism comprises upper pendulum bar, draft link and the guide rail extended along the vertical direction, described upper pendulum bar one end is rotationally connected with described slide block, one end of the other end and described draft link is rotationally connected and forms rotating junction, described rotating junction is placed in described guide rail and also can moves back and forth along described guide rail, the other end of described draft link is rotationally connected with described crossbeam, described guide rail is constructed to the opening speed curve phase matching with described slide block, described guide rail comprises the straight rail that misplaces up and down and to be connected between lower and straight track and from bottom to top to the curve track near described slide block lopsidedness.
Described guide rail is lead curve groove.
Described rotating junction is provided with can along the roller of described guide rail reciprocating rolling.
The lower surface of described crossbeam contacts with the upper end face of several upper ejector pins described.
Describedly to be rotationally connected as hinged.
Described guide rail is suitable for being molded on the column of press frame both sides.
Outside described push rod, cover has buffer spring.
Also comprise the crossbeam guide frame be located between described slide block and described crossbeam.
Described crossbeam guide frame comprises and is fixedly arranged on described slide block bilateral symmetry position and the lead extended along described slide block movement direction and the pilot hole taking shape in the corresponding symmetric position in described crossbeam two ends, be provided with fairlead in described pilot hole, described lead can move back and forth in described fairlead.
Technique scheme of the present utility model has the following advantages compared to existing technology:
1. on forcing press of the present utility model in liftout attachment, provide the upper ejecting mechanism that is symmetrically set in slide block both sides and be connected to crossbeam between these two upper ejecting mechanisms and corresponding with several upper ejector pins, thus, when slide block does drawback movement, crossbeam is reacted on by upper ejecting mechanism, realize the push rod corresponding with crossbeam to stretch out relative to slide block, described guide rail is constructed to the opening speed curve phase matching with slide block, thus ensure the movement velocity of upper ejecting mechanism and slide block opening speed exact matching and ejecting force is enough large, therefore workpiece is ejected in time, be not easy to cause mucous membrane, automated production can be carried out smoothly, in addition, by the relative length of draft link upper in upper ejecting mechanism and the optimization of described movement curve shape, be exaggerated ejection stroke, overcome the limitation that ejection stroke in prior art is short.
2. on forcing press of the present utility model in liftout attachment, described guide rail is lead curve groove, and this groove structure makes rotating junction motion wherein can be solid and reliable.
3. on forcing press of the present utility model in liftout attachment, the roller that can roll along described guide rail is set by described rotating junction, reduce frictional force between rotating junction and guide rail, ejecting mechanism is moved smooth and easy, improve ejecting mechanism exercise performance.
4., on forcing press of the present utility model in liftout attachment, described guide rail is suitable for being molded on the column of press frame both sides, this simple and beautiful structure, easy access and maintenance.
5., on forcing press of the present utility model in liftout attachment, outside described push rod, cover has buffer spring, effectively alleviates the impact of external force to push rod, extends the service life of push rod.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is structural representation of the present utility model
In figure, Reference numeral is expressed as: 1-upper ejector pin; 2-slide block; 21-lead; 3-crossbeam; 31-fairlead; 4-upper pendulum bar; 5-draft link; 6-guide rail; 7-roller.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 1, liftout attachment on a kind of forcing press, is suitable for coordinating with the press ram 2 that can linearly reciprocatingly slide, with make described press ram 2 upwards backhaul time by described upper liftout attachment, described workpiece is ejected.On described forcing press, liftout attachment comprising several upper ejector pins 1 for ejecting workpiece, being symmetrically set in the upper ejecting mechanism of described slide block 2 both sides, and to be connected to described in two crossbeam 3 between ejecting mechanism and corresponding with the upper end face of several upper ejector pins 1, be preferably the lower surface of crossbeam 3 in the present embodiment and the upper end face of several upper ejector pins 1 contacts with each other.
Wherein, the guide rail 6 that described upper ejecting mechanism comprises upper pendulum bar 4, draft link 5 and extends along the vertical direction, described upper pendulum bar 4 one end is rotationally connected with described slide block 2, one end of the other end and described draft link 5 is rotationally connected and forms rotating junction, described rotating junction is placed in described guide rail 6 and also can moves back and forth along described guide rail 6, and the other end of described draft link 5 is rotationally connected with described crossbeam 3.In the present embodiment, described in be rotationally connected preferably hinged, but be not limited to hinged, the mode such as can also to connect, axis hole grafting is rotationally connected for ball pivot.
Described guide rail 6 is positioned at described slide block 2 both sides and extends along described slide block 2 direction of motion, described guide rail is constructed to the opening speed curve phase matching with described slide block 2, and described guide rail comprises the straight rail that misplaces up and down and to be connected between lower and straight track and from bottom to top to the curve track near described slide block 2 lopsidedness.
During shaping workpiece, described slide block 2 is when from lower dead point position, upwards backhaul is slided, the upper ejecting mechanism arranged by described slide block 2 bilateral symmetry promotes described crossbeam 3 downwards, move upward due to described upper ejecting mechanism and crossbeam 3 also can be driven when described slide block 2 upwards slides, therefore, through continuing to optimize upper draft link 4 in ejecting mechanism, the relative length of 5 and the curve shape of guide rail 6, movement velocity and the slide block 2 opening speed exact matching of ejecting mechanism can be made, and ensure the ejection stroke of 100mm.Meanwhile, for the ease of easy accessibility in inspection and maintenance process, in the present embodiment, preferred guide rail 6 is molded on the column of press frame both sides.
In order to reduce the loss of slide block 2 and upper ejecting mechanism interaction force, the rotating junction moved up and down along described guide rail 6 in the utility model can be provided with roller 7 or pulley.As preferably, in the present embodiment, rotating junction is provided with roller 7.
Further, in the present embodiment, outside described push rod, cover has buffer spring, effectively can alleviate the impact of external force to push rod, extend the service life of push rod.
In addition, in order to make described crossbeam 3 stable action, on the present embodiment forcing press, liftout attachment also comprises the crossbeam guide frame be located between slide block 2 and crossbeam 3.
Described crossbeam guide frame comprises and is fixedly arranged on described slide block 2 left and right sides symmetric position and the lead 21 extended along described slide block 2 backhaul direction, and take shape in two pilot holes that on described crossbeam 2, lead 21 symmetrical with two is corresponding, be provided with fairlead 31 in described pilot hole, described lead 21 can move back and forth in described fairlead 31.In order to realize guide effect, the diameter of described lead 21 and described fairlead 31 quite or the diameter of described lead 21 be slightly less than the diameter of described fairlead 31.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.

Claims (9)

1. liftout attachment on a forcing press, comprise several upper ejector pins (1) for ejecting workpiece, described upper liftout attachment is suitable for coordinating with the press ram that can linearly reciprocatingly slide (2), with make described press ram (2) upwards backhaul time by described upper liftout attachment, described workpiece is ejected, it is characterized in that, described upper liftout attachment also comprises the upper ejecting mechanism that is symmetrically set in described slide block (2) both sides and to be connected to described in two between upper ejecting mechanism and the crossbeam (3) corresponding with described several upper ejector pins (1), described upper ejecting mechanism comprises upper pendulum bar (4), draft link (5) and the guide rail (6) extended along the vertical direction, described upper pendulum bar (4) one end is rotationally connected with described slide block (2), one end of the other end and described draft link (5) is rotationally connected and forms rotating junction, described rotating junction is placed in described guide rail (6) and also can moves back and forth along described guide rail (6), the other end of described draft link (5) is rotationally connected with described crossbeam (3), described guide rail (6) is constructed to the opening speed curve phase matching with described slide block (2), described guide rail comprises the straight rail that misplaces up and down and to be connected between lower and straight track and from bottom to top to the curve track near described slide block (2) lopsidedness.
2. liftout attachment on forcing press according to claim 1, it is characterized in that, described guide rail (6) is lead curve groove.
3. liftout attachment on forcing press according to claim 2, it is characterized in that, described rotating junction is provided with can along the roller (7) of described guide rail (6) reciprocating rolling.
4. liftout attachment on forcing press according to claim 3, is characterized in that, the lower surface of described crossbeam (3) contacts with the upper end face of described several upper ejector pins (1).
5. liftout attachment on the forcing press according to any one of claim 1-4, is characterized in that, described in be rotationally connected as hinged.
6. liftout attachment on forcing press according to claim 5, is characterized in that, described guide rail (6) is suitable for being molded on the column of press frame both sides.
7. liftout attachment on forcing press according to claim 6, is characterized in that, outside described push rod, cover has buffer spring.
8. liftout attachment on the forcing press according to any one of claim 1-4, is characterized in that, also comprises the crossbeam guide frame be located between described slide block (2) and described crossbeam (3).
9. liftout attachment on forcing press according to claim 8, it is characterized in that, described crossbeam guide frame comprises and is fixedly arranged on described slide block (2) bilateral symmetry position and the lead (21) extended along described slide block (2) direction of motion and take shape in the pilot hole of the corresponding symmetric position in described crossbeam (3) two ends, be provided with fairlead (31) in described pilot hole, described lead (21) can move back and forth in described fairlead (31).
CN201520070257.4U 2015-01-30 2015-01-30 Liftout attachment on forcing press Expired - Fee Related CN204524144U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520070257.4U CN204524144U (en) 2015-01-30 2015-01-30 Liftout attachment on forcing press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520070257.4U CN204524144U (en) 2015-01-30 2015-01-30 Liftout attachment on forcing press

Publications (1)

Publication Number Publication Date
CN204524144U true CN204524144U (en) 2015-08-05

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110405128A (en) * 2019-08-29 2019-11-05 刘安胜 Universal liftout attachment for forging mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110405128A (en) * 2019-08-29 2019-11-05 刘安胜 Universal liftout attachment for forging mold
CN110405128B (en) * 2019-08-29 2020-11-20 刘安胜 Universal ejection device for forging die

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150805

Termination date: 20190130