CN106584644B - A kind of control method of burn failure when preventing automatic hydraulic press from suppressing - Google Patents
A kind of control method of burn failure when preventing automatic hydraulic press from suppressing Download PDFInfo
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- CN106584644B CN106584644B CN201611129842.2A CN201611129842A CN106584644B CN 106584644 B CN106584644 B CN 106584644B CN 201611129842 A CN201611129842 A CN 201611129842A CN 106584644 B CN106584644 B CN 106584644B
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- compacting
- die sleeve
- decline
- pressure
- control method
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
- B28B17/0081—Process control
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Control Of Presses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The embodiment of the invention discloses it is a kind of prevent automatic hydraulic press from suppressing when burn failure control method, comprising the following steps: S001, upper mold decline, until lower die is fallen into place；S002, according to the size relation of S2 and S3, P and P1 and T and T1, it is divided into and continues compacting, compacting suspension, compacting three kinds of compacting states of completion, further according to the division of S2 and S1, P and P2 and compacting state, die sleeve decline is carried out, the movement that die sleeve stops and die sleeve stops and sounds an alarm.The present invention is compared by relative displacement S2, master cylinder real-time pressure P and the progressive of pressing time T of upper mold and die sleeve, and the movement of die sleeve is controlled according to comparison result, die sleeve can be efficiently controlled in the decline of entire pressure process, keep adobe density relatively uniform from top to bottom, effectively improves product qualification rate.
Description
Technical field
Utilization and its control technology field the invention belongs to automatic hydraulic press system, and in particular to one kind prevents automatic liquid
The control method of burn failure when press is suppressed.
Background technique
The structure of the prior art, as shown in Figure 1, the design of mold liner plate upper end has obviously than relatively thin position, it is therefore an objective to side
Just mold liner plate dismounts, and mold liner plate is fixed by pressing plate up and down, and mold top board 2 and liner plate 3 have gap in vertical direction,
It is easily damaged when by biggish power, normally should be avoided in when compacting and apply pressure herein.Mold lower platen 4 is set to liner plate 3
Lower end, lower die 5 and upper mold 1 cooperate, and generates pressure to the upper and lower end face of adobe.
The control method of the position of die sleeve 6 when existing automatic hydraulic press is suppressed, as shown in Fig. 2, upper mold 1 starts after starting
With the decline of V1 speed, upper mold 1 is suppressed after falling into place to be started, and die sleeve 6 declines displacement S during compacting with speed V2, under
Drop is completed die sleeve 6 and is stopped, and compacting is completed to terminate.It is not completed if decline is completed in compacting, the decline of die sleeve 6 will also stop, therewith
Compacting is completed to terminate.The decline of die sleeve 6 has die sleeve lowest order Hmin limitation, reaches or setover, die sleeve 6 stop decline.
When compacting, die sleeve 6, which simultaneously declines, can make adobe keep uniform body close from top to bottom.
The control method of above-mentioned automatic hydraulic press is maturely applied, but this kind of control method has following deficiency
Place:
(1) operator needs rule of thumb error to be easy, to operator come speed, displacement and lowest order that die sleeve 6 is arranged
It is more demanding.
(2) if the parameter setting of the control method die sleeve 6 is improper, it is easy to cause die sleeve 6 to decline unreasonable, to influence brick
Base quality.
(3) if the parameter setting of the control method die sleeve 6 is improper, adobe is easy to cause to be pressed into outside die cavity open or die cavity
Type, to be damaged to the upper end of the liner plate 3 of die cavity.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that providing one kind when preventing automatic hydraulic press from suppressing, mold is damaged
Bad control method can efficiently control die sleeve in the decline of entire pressure process, keep adobe density relatively uniform from top to bottom,
Effectively improve product qualification rate.
In order to solve the above-mentioned technical problem, mold damages when preventing automatic hydraulic press from suppressing the embodiment of the invention provides one kind
Bad control method, the least displacement of definition protection liner plate first are S1, and the relative displacement of upper mold and die sleeve is S2, die sleeve decline
Safe displacement starting point be S3, upper mold pressing speed is V1, and die sleeve velocity coeffficient is K, and die sleeve decrease speed is V2, and master cylinder is real
When pressure be P, pressing time T, master cylinder goal pressure be P1, master cylinder rise pressure judge pressure for P2, the maximum pressing time be T1,
Wherein, S1, S3, V1, V2, K, P1, P2, T1 are constant, and V2=V1*K (0<K<1), S1>S3, S2, P and T are real-time detection number
According to；
The following steps are included:
S001, upper mold decline, until upper mold is fallen into place；
S002, according to the size relation of S2 and S3, P and P1 and T and T1, be divided into continue compacting, compacting stops, pressure
System completes three kinds of compacting states, further according to S2 and S1, P and P2 and suppresses the division of state, carry out die sleeve decline, die sleeve stopping and
The movement that die sleeve stops and sounds an alarm.
As an improvement of the above scheme, step S002 is specifically divided into:
S002A, judge whether S2 is greater than or equal to S3, if it is the S002B and S002C that gos to step, jump if not
To step S002D；
S002B, start to suppress, judge whether P is greater than or equal to P1, if it is the S002E that gos to step, jump if not
To step S002F；
Pressing time T: compacting carries out timing since just, stops timing when compacting is completed or compacting stops and resets；
S002C, die sleeve are declined with V2, and go to step S002H
S002D, judge whether S2 is less than S1, if it is the S002I that gos to step, go to step S002J if not；
S002E, compacting are completed, and process terminates；
Whether S002F, pressing time T are greater than or equal to T1, if it is the S002G that gos to step, jump to step if not
Rapid S002B；
S002G, compacting stop, and alarm S2 too small when compacting time-out or compacting occur；
S002H, judge whether S2 is greater than or equal to S3, if it is the S002C that gos to step, go to step if not
S002D；
S002I, judge whether master cylinder real-time pressure P is greater than P1, if it is the S002G that gos to step, jump to if not
Step S002J；
S002J, die sleeve stop decline, and go to step S002H.
As an improvement of the above scheme, master cylinder, which rises, presses the value range for judging pressure P2 for 0.3-0.7Mpa.
As an improvement of the above scheme, the value range of maximum pressing time T1 is 5-15s.
As an improvement of the above scheme, the value range of the safe displacement starting point S3 of die sleeve decline is S1+15 to S1+25
Between.
The implementation of the embodiments of the present invention has the following beneficial effects:
The present invention is declined by the least displacement S1 and die sleeve of the relative displacement S2 and protection liner plate of monitoring upper mold and die sleeve
Safe displacement starting point S3 size relation, be avoided that adobe forms outside die cavity upper end or chamber, prevent burn failure.
The progressive ratio that the present invention passes through relative displacement S2, the master cylinder real-time pressure P and pressing time T of upper mold and die sleeve
It is right, and according to the movement of comparison result control die sleeve, die sleeve can be efficiently controlled in the decline of entire pressure process, keep adobe close
Degree is relatively uniform from top to bottom, effectively improves product qualification rate.
Detailed description of the invention
Fig. 1 is existing automatic hydraulic press structural schematic diagram；
Fig. 2 is the control method flow chart of existing automatic hydraulic press compacting；
Fig. 3 is a kind of automatic hydraulic press structure of the control method of burn failure when preventing automatic hydraulic press from suppressing of the present invention
Schematic diagram；
Fig. 4 is a kind of flow chart of the control method of burn failure when preventing automatic hydraulic press from suppressing of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.Only this is stated, the present invention occurs in the text or will occur up, down, left, right, before and after, it is inside and outside etc. just
Position word is not to specific restriction of the invention only on the basis of attached drawing of the invention.
As shown in figure 3, the embodiment of the invention provides it is a kind of prevent automatic hydraulic press from suppressing when burn failure controlling party
Method, wherein mold 3 upper end of liner plate design have obviously than relatively thin position, it is therefore an objective to facilitate liner plate 3 dismount, about 3 liner plate by
Pressing plate is fixed, and mold top board 2 and liner plate 3 have gap in vertical direction, is easily damaged when by biggish power, positive normal pressure
It should be avoided in when processed and apply pressure herein.Mold lower platen 4 is set to the lower end of liner plate 3, and lower die 5 and upper mold 1 cooperate, to adobe
Upper and lower end face generate pressure.
The least displacement of definition protection liner plate 3 first is S1, and the relative displacement of upper mold 1 and die sleeve 6 is S2, and die sleeve 6 declines
Safe displacement starting point be S3, the pressing speed of upper mold 1 is V1, and 6 velocity coeffficient of die sleeve is K, and 6 decrease speed of die sleeve is V2,
Master cylinder real-time pressure is P, and pressing time T, master cylinder goal pressure is P1, and master cylinder plays pressure and judges pressure for P2, when maximum is suppressed
Between be T1, wherein S1, S3, V1, V2, K, P1, P2, T1 are constant, V2=V1*K (0<K<1), S1>S3, and S2, P and T are real
When detection data；The following steps are included:
S001, upper mold 1 decline, until upper mold 1 is fallen into place；
S002, according to the size relation of S2 and S3, P and P1 and T and T1, be divided into continue compacting, compacting stops, pressure
System completes three kinds of compacting states, further according to the division of S2 and S1, P and P2 and compacting state, carries out the decline of die sleeve 6, die sleeve 6 stops
The movement for stopping and sounding an alarm with die sleeve 6.
As shown in Figure 4, it is preferable that step S002 is specifically divided into:
S002A, judge whether S2 is greater than or equal to S3, wherein the value model for the safe displacement starting point S3 that die sleeve 6 declines
It encloses between S1+15 to S1+25, in the present embodiment, S3=S1+20.If it is the S002B and S002C that gos to step, if
The no S002D that gos to step；
S002B, start to suppress, judge whether P is greater than or equal to P1, if it is the S002E that gos to step, jump if not
To step S002F；
Pressing time T: compacting carries out timing since just, stops timing when compacting is completed or compacting stops and resets；
S002C, die sleeve are declined with V2, and go to step S002H
S002D, judge whether S2 is less than S1, if it is the S002I that gos to step, go to step S002J if not；
S002E, compacting are completed, and process terminates；
Whether S002F, pressing time T are greater than or equal to T1, and the value range of maximum pressing time T1 is preferably 5-15s,
The present embodiment is 10s.If it is the S002G that gos to step, go to step S002B if not；
S002G, compacting stop, and alarm S2 too small when compacting time-out or compacting occur；
S002H, judge whether S2 is greater than or equal to S3, if it is the S002C that gos to step, go to step if not
S002D；
S002I, judge whether master cylinder real-time pressure P is greater than P1, if it is the S002G that gos to step, jump to if not
Step S002J；When master cylinder real-time pressure P is not set up, pressure is very little, and master cylinder plays the value that pressure judges pressure P2
Range preferably from 0.3-0.7Mpa.Here it is assumed that using whether 0.5MPa has the critical point for establishing pressure, master cylinder as pressure
Real-time pressure P is higher than 0.5MPa and thinks to have been set up pressure, then thinks that pressure is not established less than or equal to 0.5MPa.
As S2 < S1, master cylinder real-time pressure P is established not yet, and die sleeve 6 stops waiting, if master cylinder real-time pressure P is
It is set up, compacting must stop immediately.
S002J, die sleeve stop decline, and go to step S002H.
The implementation of the embodiments of the present invention has the following beneficial effects:
The least displacement S1 and die sleeve 6 that the present invention passes through the relative displacement S2 and protection liner plate 3 of monitoring upper mold 1 and die sleeve 6
The size relation of the safe displacement starting point S3 of decline, is avoided that adobe forms outside die cavity upper end or chamber, prevents burn failure.
The present invention passes through upper mold 1 and relative displacement S2, the master cylinder real-time pressure P of die sleeve 6 and the progressive ratio of pressing time T
It is right, and according to the movement of comparison result control die sleeve 6, die sleeve 6 can be efficiently controlled in the decline of entire pressure process, make adobe
Density is relatively uniform from top to bottom, effectively improves product qualification rate.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, therefore equivalent changes made in accordance with the claims of the present invention, are still within the scope of the present invention.
Claims (5)
1. a kind of control method of burn failure when preventing automatic hydraulic press from suppressing, the least displacement of definition protection liner plate first are
The relative displacement of S1, upper mold and die sleeve is S2, and the safe displacement starting point of die sleeve decline is S3, and upper mold pressing speed is V1, mould
Set velocity coeffficient is K, and die sleeve decrease speed is V2, and master cylinder real-time pressure is P, and pressing time T, master cylinder goal pressure is P1,
Master cylinder plays pressure and judges pressure for P2, and the maximum pressing time is T1, wherein S1, S3, V1, V2, K, P1, P2, T1 are constant, V2
=V1*K (0<K<1), S1>S3, S2, P and T are real-time detector data；Characterized by comprising the following steps:
S001, upper mold decline, until upper mold is fallen into place；
S002, according to the size relation of S2 and S3, P and P1 and T and T1, be divided into continue compacting, compacting stops, has suppressed
Die sleeve decline, die sleeve stopping and die sleeve are carried out further according to the division of S2 and S1, P and P2 and compacting state at three kinds of compacting states
The movement for stopping and sounding an alarm.
2. control method as described in claim 1, which is characterized in that step S002 is specifically divided into:
S002A, judge whether S2 is greater than or equal to S3, if it is the S002B and S002C that gos to step, jump to step if not
Rapid S002D；
S002B, start to suppress, judge whether P is greater than or equal to P1, if it is the S002E that gos to step, jump to step if not
Rapid S002F；
Pressing time T: compacting carries out timing since just, stops timing when compacting is completed or compacting stops and resets；S002C,
Die sleeve is declined with V2, and go to step S002H
S002D, judge whether S2 is less than S1, if it is the S002I that gos to step, go to step S002J if not；S002E,
Compacting is completed, and process terminates；
Whether S002F, pressing time T are greater than or equal to T1, if it is the S002G that gos to step, go to step if not
S002B；
S002G, compacting stop, and alarm S2 too small when compacting time-out or compacting occur；
S002H, judge whether S2 is greater than or equal to S3, if it is the S002C that gos to step, go to step S002D if not；
S002I, judge whether master cylinder real-time pressure P is greater than P1, if it is the S002G that gos to step, go to step if not
S002J；
S002J, die sleeve stop decline, and go to step S002H.
3. control method as claimed in claim 2, which is characterized in that master cylinder plays pressure and judges the value range of pressure P2 for 0.3-
0.7Mpa。
4. control method as claimed in claim 2, which is characterized in that the value range of maximum pressing time T1 is 5-15s.
5. control method as claimed in claim 2, which is characterized in that the value model of the safe displacement starting point S3 of die sleeve decline
It encloses between S1+15 to S1+25.
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| CN201611129842.2A CN106584644B (en) | 2016-12-09 | 2016-12-09 | A kind of control method of burn failure when preventing automatic hydraulic press from suppressing |
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| CN201611129842.2A CN106584644B (en) | 2016-12-09 | 2016-12-09 | A kind of control method of burn failure when preventing automatic hydraulic press from suppressing |
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| CN106584644B true CN106584644B (en) | 2019-04-19 |
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| CN104765283A (en) * | 2014-01-08 | 2015-07-08 | 佛山市恒力泰机械有限公司 | Closed-loop control method and system giving consideration to time and pressure in powder pressing process |
| CN105082609A (en) * | 2014-05-08 | 2015-11-25 | 佛山市恒力泰机械有限公司 | Method for automatically regulating stroke of oil cylinder |
| CN105090173A (en) * | 2014-05-08 | 2015-11-25 | 佛山市恒力泰机械有限公司 | Displacement-sensor-free pressurizing method of dual-acting oil cylinder |
| CN105479802A (en) * | 2015-12-16 | 2016-04-13 | 佛山市恒力泰机械有限公司 | Control method for prolonging service life of die of automatic hydraulic machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160356118A1 (en) * | 2012-12-21 | 2016-12-08 | Solvay Sa | Method to minimize brine contamination and/or gas migration during in situ trona solution mining |
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2016
- 2016-12-09 CN CN201611129842.2A patent/CN106584644B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765283A (en) * | 2014-01-08 | 2015-07-08 | 佛山市恒力泰机械有限公司 | Closed-loop control method and system giving consideration to time and pressure in powder pressing process |
| CN105082609A (en) * | 2014-05-08 | 2015-11-25 | 佛山市恒力泰机械有限公司 | Method for automatically regulating stroke of oil cylinder |
| CN105090173A (en) * | 2014-05-08 | 2015-11-25 | 佛山市恒力泰机械有限公司 | Displacement-sensor-free pressurizing method of dual-acting oil cylinder |
| CN105479802A (en) * | 2015-12-16 | 2016-04-13 | 佛山市恒力泰机械有限公司 | Control method for prolonging service life of die of automatic hydraulic machine |
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Effective date of registration: 20181101 Address after: 528137 No. 25 (C), science and Technology Industrial Zone, Sanshui center, Foshan, Guangdong, China (F4) Applicant after: Henglitai Machinery Co., Ltd., Foshan City Applicant after: Anhui Keda Electromechanical Co., Ltd. Address before: 528137 No. 25 (C), science and Technology Industrial Zone, Sanshui center, Foshan, Guangdong, China (F4) Applicant before: Henglitai Machinery Co., Ltd., Foshan City |
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