CN103949582B - For the link gear taking out plunger tip and folding mould of core-shooting box die - Google Patents
For the link gear taking out plunger tip and folding mould of core-shooting box die Download PDFInfo
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- CN103949582B CN103949582B CN201410139214.7A CN201410139214A CN103949582B CN 103949582 B CN103949582 B CN 103949582B CN 201410139214 A CN201410139214 A CN 201410139214A CN 103949582 B CN103949582 B CN 103949582B
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Abstract
The present invention relates to a kind of link gear taking out plunger tip and folding mould for core-shooting box die, it is characterized in that: also comprise push pedal, push pedal is by oil cylinder pushing, and the lower end of plunger tip bar is fixed in push pedal; The guide rod that two parallel interval are arranged, the lower end of each guide rod is fixed in push pedal; In order to a left side loose core be connected left push rod, with the right side loose core is connected right push rod, with after to loose core the rear push-rod be connected, each push rod is arranged with the spring making the maintenance of each push rod move trend outward; Rotate and be arranged on the left driving cam on lower mold holder, right driving cam and rear drive cam, the outer end of each push rod and the side face of each driving cam are conflicted, and are connected by connecting rod between left driving cam and rear drive cam, between right driving cam and rear drive cam; Be connected by drive mechanism between push pedal with rear drive cam.This link gear only uses a hydraulic cylinder as driving element, will loose core, plunger tip and die sinking action accomplish without any letup, and save the quantity of hydraulic cylinder, reduced energy consumption, simplify electrical control.
Description
Technical field
The present invention relates to big-and-middle-sized integrated core shooting box mould, especially relate to a kind of link gear taking out plunger tip and folding mould for core-shooting box die, this core-shooting box die is whole core-shooting box die for central guide frame of side rack of railway vehicle.
Background technology
The product of existing employing core-shooting box die coremaking is all have complicated profile and many hollow structures, and core-shooting box die, particularly relates to whole core-shooting box die for central guide frame of side rack of railway vehicle.A kind of whole core-shooting box die for central guide frame of side rack of railway vehicle as disclosed in the patent No. Chinese utility model patent " a kind of whole core-shooting box die for central guide frame of side rack of railway vehicle " that is ZL200920308283.0 (Authorization Notice No. is CN201470833U).Comprise framed group, core box, penetrate sand plate, air blowing plate and core ejection mechanism, core box body comprises upper and lower core box, loose core in left and right and after loose core, the front side of upper and lower core box is directly connected, lower core box is connected with framed, its inner chamber is provided with one and empties block, the upside of upper core box on corresponding station respectively correspondence be provided with and penetrate sand plate and air blowing plate, penetrate sand plate and air blowing plate be respectively equipped with penetrate sand mouth and blowing nozzle and with on upper core box to penetrate sand blast gas port suitable.
Existing core-shooting box die equipment is less in the selection in direction of loosing core, generally can only provide in former and later two directions simultaneously and loose core, can not provide Core-pulling force in the lateral direction, loosing core as realized in other (left and right) directions, needs extra installation oil cylinder is auxiliary looses core.Realize at other (forming left and right) direction by oil cylinder to loose core and there is following defect: 1, oil cylinder is large in expense, also need be connected and installed device at Design of Dies, as increased oil cylinder installing frame, increase the design difficulty of mould, increase design cost, strengthen mold weight, thus waste Making mold material; 2, core-pulling mechanism and folding mode structure completely independent, this will cause oil cylinder to occur asynchronous with loosing core in die sinking process, causes burn failure, the Core-pulling force reduction that oil cylinder leakage of oil causes oil cylinder to provide, cause core-pulling mechanism to extract out smoothly, thus lose time; 3, provide core-pulling force not easily consistent during loose core of oil cylinder, cause the speed of loosing core inconsistent, core ejection mechanism is as easy as rolling off a log will also not complete the side core bursting of action of loosing core; 4, oil cylinder can cause cylinder seal poor in long-time use, causes leakage of oil, and greasy dirt enters sand shot machine, thus affects the total quality of core; 5, auxiliary cylinder device dismounting and change is inconvenient; 6, auxiliary cylinder can be subject to very large environment reason, causes precise decreasing, operates insensitive, loses time.
Summary of the invention
Technical problem to be solved by this invention provides a kind of link gear taking out plunger tip and folding mould for core-shooting box die for above-mentioned prior art present situation, plunger tip will be taken out by this mechanism and folding mould organically combines, only the oil cylinder used during folding mould need be adopted as driving source, realize taking out plunger tip action simultaneously, and ensure to take out plunger tip action and the good uniformity of folding mould, simplify mould structure, lower die manufacturing cost.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of link gear taking out plunger tip and folding mould for core-shooting box die, comprise frame, upper core box, lower core box, plunger tip bar, and to constrain on lower core box can before and after loose core after slippage and can the left side of left and right slippage to loose core and loose core in the right side, lower core box is arranged on the lower mold holder of frame, it is characterized in that: the push pedal also comprising the below being located at described lower mold holder, push pedal can be moved up and down by oil cylinder pushing, and the lower end of described plunger tip bar is fixed in push pedal, the guide rod that two parallel interval are arranged, each guide rod to constrain in frame and can the upper and lower slippage of frame relatively, and the lower end of described each guide rod is fixed in push pedal, and described upper core box to be fixed on guide rod and to move up and down with guide rod, in order to a left side loose core be connected left push rod, with the right side loose core be connected right push rod, with after to loose core the rear push-rod be connected, left push rod and right push rod constrain in also energy left and right slippage on lower mold holder, rear push-rod constrains in also energy front and back slippage on lower mold holder, left push rod is arranged with and makes left push rod keep the outer left spring moving trend, right push rod is arranged with and makes right push rod keep the outer right spring moving trend, rear push-rod is arranged with and makes rear push-rod keep outer rear spring of moving trend, rotate the left driving cam be arranged on lower mold holder, right driving cam and rear drive cam, the outer end of described left push rod and the side face of left driving cam are conflicted, the outer end of described right push rod and the side face of right driving cam are conflicted, the outer end of described rear push-rod and the side face of rear drive cam are conflicted, and be connected by first connecting rod between described left driving cam and rear drive cam, be connected by second connecting rod between described right driving cam and rear drive cam, can synchronously deflect to make each driving cam, and a high position for each driving cam or low level side face are all synchronously contacted with each push rod, be connected by drive mechanism between push pedal with rear drive cam, this drive mechanism can make the slippage up and down of push pedal drive rear drive cam to rotate.
Above-mentioned drive mechanism comprises the driving gear be arranged on the power transmission shaft of rear drive cam; Be fixed on the drive plate in push pedal; Constraining under frame can the sliding rack of left and right slippage, and by muscle slot fit anatomical connectivity between drive plate and the back side of sliding rack, this muscle slot fit structure can make moving up and down of drive plate drive the slippage of sliding rack left and right; The power transmission shaft of rotating support below lower mold holder, this power transmission shaft is fixed with the first driven gear and the second driven gear, wherein the first driven gear is combined with driving gear, and the second driven gear engages with the bar shaped teeth portion transmission on described sliding rack.It is few that this drive mechanism relates to parts, and the structure of each parts is simple, is convenient to manufacture and assembling.
Above-mentioned lower mold holder is fixed with left mounting blocks, right mounting blocks and rear mounting blocks, described left push rod activity is located on left mounting blocks, and right push rod activity is located on right mounting blocks, and rear push-rod activity is located on rear mounting blocks; Left push rod is fixed with left baffle ring, the two ends of described left spring are supported between left mounting blocks and left baffle ring respectively, right push rod is fixed with right baffle ring, the two ends of described right spring are supported between right mounting blocks and right baffle ring respectively, rear push-rod is fixed with rear baffle ring, the two ends of described rear spring are supported between rear mounting blocks and rear baffle ring respectively.This structure not only provides suitable installation position to each push rod, and ensure again that spring applies outside elastic force to each push rod, ensureing respectively looses core normally looses core simultaneously.
Above-mentioned muscle slot fit structure comprises the convex tendon being arranged on and drive plate front end face is obliquely installed from top to bottom, and is arranged on the chute that the sliding rack back side is obliquely installed, and described convex tendon is positioned at chute.Certain muscle slot is put and can be exchanged.
Fix about two spaced sliding rails below above-mentioned frame, sliding rail has guide groove, the two ends of described sliding rack constrain in the guide groove of two sliding rails respectively, and described drive plate is between two sliding rails.This structure guarantees sliding rack only left and right slippage.
Above-mentioned sliding rack two ends are provided with roller, and one of them roller is positioned at the guide groove of one of them sliding rail, and another roller is positioned at the guide groove of another sliding rail.Be rolling friction between roller and guide groove, make sliding rack slippage more smooth and easy, not easily occur tooth bar screens phenomenon.
Above-mentioned guide rod is provided with between the upper and lower every arranging the spacing shaft shoulder in order to retrain upper core box.
Compared with prior art, the invention has the advantages that: drive the driving elements such as the hydraulic cylinder of respectively loosing core and needed for folding mould for saving, simplify mould structure and electric control system, this link gear only uses a hydraulic cylinder as driving element, to loose core, plunger tip and die sinking action accomplish without any letup, save the quantity of hydraulic cylinder, reduced energy consumption, simplify electrical control; Folding mold process and process of loosing core also is made to keep the uniformity of height, not easily mold damage in addition.
Accompanying drawing explanation
Fig. 1 is the perspective view one of the embodiment of the present invention;
Fig. 2 is the perspective view two of the embodiment of the present invention;
Fig. 3 is the perspective view after the embodiment of the present invention removes drive mechanism;
Fig. 4 is the perspective view one of sliding rack in the embodiment of the present invention;
Fig. 5 is the perspective view two of sliding rack in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Fig. 1 ~ 5, it is a preferred embodiment of the present invention.
A kind of link gear taking out plunger tip and folding mould for core-shooting box die, comprise frame 1, upper core box, lower core box, plunger tip bar 2, and to constrain on lower core box can before and after loose core after slippage and can the left side of left and right slippage to loose core and loose core in the right side, lower core box is arranged on the lower mold holder 11 of frame 1; Upper core box, lower core box, a left side are loosed core and loose core in the right side is prior art, and for making drawing more can express clearly this link gear, not display in drawing that upper core box, lower core box, a left side are loosed core and loose core in the right side, frame is also only schematic diagram in addition.
Also comprise the push pedal 3 be located at below described lower mold holder 11, push pedal 3 is promoted by oil cylinder 4 and can move up and down, and the lower end of plunger tip bar 2 is fixed in push pedal 3.
The guide rod 5 that two parallel interval are arranged, each guide rod 5 constrains in also energy frame about 1 slippage relatively in frame 1, the lower end of each guide rod 5 is fixed in push pedal 3, and upper core box to be fixed on guide rod 5 and to move up and down with guide rod 5, and guide rod 5 is provided with between the upper and lower every arranging the spacing shaft shoulder 51 in order to retrain upper core box.
In order to a left side loose core be connected left push rod 6a, with the right side loose core be connected right push rod 6b, with after to loose core the rear push-rod 6c be connected, left push rod 6a and right push rod 6b constrains in also energy left and right slippage on lower mold holder 11, rear push-rod 6c constrains in also energy front and back slippage on lower mold holder 11, left push rod 6a is arranged with and makes left push rod 6a keep the outer left spring 61 moving trend, right push rod 6b is arranged with and makes right push rod 6b keep the outer right spring 62 moving trend, rear push-rod 6c is arranged with and makes rear push-rod 6c keep outer rear spring 63 of moving trend.
Lower mold holder 11 is fixed with left mounting blocks 15a, right mounting blocks 15b and rear mounting blocks 15c, left push rod 6a activity is located on left mounting blocks 15a, right push rod 6b activity is located on right mounting blocks 15b, and rear push-rod 6c activity is located on rear mounting blocks 15c; Left push rod 6a is fixed with left baffle ring 16a, the two ends of left spring 61 are supported between left mounting blocks 15a and left baffle ring 16a respectively, right push rod 62 is fixed with right baffle ring 16b, the two ends of right spring 62 are supported between right mounting blocks 15b and right baffle ring 16b respectively, rear push-rod 63 is fixed with rear baffle ring 16c, the two ends of rear spring 63 are supported between rear mounting blocks 15c and rear baffle ring 16c respectively.
Rotate the left driving cam 7a be arranged on lower mold holder 11, right driving cam 7b and rear drive cam 7c, the outer end of left push rod 6a and the side face of left driving cam 7a are conflicted, the outer end of right push rod 6b and the side face of right driving cam 7b are conflicted, the outer end of rear push-rod 6c and the side face of rear drive cam 7c are conflicted, and be connected by first connecting rod 8a between left driving cam 7a and rear drive cam 7c, be connected by second connecting rod 8b between right driving cam 7b and rear drive cam 7c, first connecting rod 8a and second connecting rod 8b is coaxially hinged on rear drive cam 7c, and the pin joint of first connecting rod 8a and second connecting rod 8b and each driving cam 7a, 7b, 7c pivot distance and relevant position all identical, to make each driving cam 7a, 7b, 7c can synchronously deflect, and makes each driving cam 7a, 7b, a high position of 7c or low level side face are all synchronous with each push rod 6a, 6b, 6c contacts, each like this driving cam 7a, 7b, 7c synchronously promotes each push rod 6a, 6b, 6c synchronously drives respectively to loose core synchronously and moves or move outward.
Be located at push pedal 3 to be connected by drive mechanism with between rear drive cam 7c, this drive mechanism can make the slippage up and down of push pedal 3 drive rear drive cam 7c to rotate.
Drive mechanism comprises the driving gear 72 be arranged on the power transmission shaft 71 of rear drive cam 7c.
Be fixed on the drive plate 9 in push pedal 3.
Constraining in frame 1 time can the sliding rack 10 of left and right slippage, and by muscle slot fit anatomical connectivity between the back side of drive plate 9 and sliding rack 10, this muscle slot fit structure can make moving up and down of drive plate 9 drive sliding rack about 10 slippage; Muscle slot fit structure comprises the convex tendon 91 being arranged on and drive plate 9 front end face is obliquely installed from top to bottom, and is arranged on the chute 101 that sliding rack 10 back side is obliquely installed, and convex tendon 91 is positioned at chute 101.
The power transmission shaft 12 of rotating support below lower mold holder 11, this power transmission shaft 12 is fixed with the first driven gear 13 and the second driven gear 14, wherein the first driven gear 13 is combined with driving gear 72, and the second driven gear 14 engages with the bar shaped teeth portion transmission on sliding rack 10.
Fix about two spaced sliding rails 17 below frame 1, sliding rail 17 has guide groove 171, the two ends of sliding rack 10 constrain in the guide groove 171 of two sliding rails respectively, and drive plate 9 is between two sliding rails 17.Sliding rack 10 two ends are provided with roller 18, and one of them roller 18 is positioned at the guide groove 171 of one of them sliding rail, and another roller 18 is positioned at the guide groove 171 of another sliding rail.
Operation principle of the present invention and process as follows:
During matched moulds, push pedal 3 is driven to move down as driving the hydraulic cylinder 4 of original paper, plunger tip bar 2, guide rod 5 and fixing drive plate 9 all moves down with push pedal 3, because upper core box is fixed on guide rod 5, therefore upper core box also moves down matched moulds thereupon, under the effect of the muscle slot fit structure between drive plate 9 and the back side of sliding rack 10, band carry-over bar moves to right, at the first driven gear 13, under the gearing of the second driven gear 14 and driving gear 72, rear drive cam 7c is driven to be rotated counterclockwise under the state of overlooking, at this moment each push rod 6a, 6b, 6c and each driving cam 7a, 7b, the high-order circumferential contact of 7c, each push rod 6a, 6b, 6c is at each driving cam 7a, 7b, each spring 61 is overcome under the promotion of 7c, 62, move in the effect of 63, with each push rod 6a, 6b, fixing the loosing core also of 6c moves, complete matched moulds.
During die sinking, move as driving the hydraulic cylinder 4 of original paper to drive in push pedal 3, plunger tip bar 2, guide rod 5 and with the fixing drive plate 9 of push pedal 3 all on move, because upper core box is fixed on guide rod 5, therefore upper core box also with on remove mould, under the effect of the muscle slot fit structure between drive plate 9 and the back side of sliding rack 10, band carry-over bar moves to left, at the first driven gear 13, under the gearing of the second driven gear 14 and driving gear 72, rear drive cam 7c is driven to turn clockwise under the state of overlooking, at this moment each push rod 6a, 6b, 6c and each driving cam 7a, 7b, the low level circumferential contact of 7c, each push rod 6a, 6b, 6c is at respective spring 61, 62, the elastic force effect of 63 is lower outside to move, with each push rod 6a, 6b, what 6c was fixing loose core also outer moving, complete die sinking, finished product core ejects by plunger tip bar 2 from the die cavity of lower core box simultaneously.
Claims (7)
1. the link gear taking out plunger tip and folding mould for core-shooting box die, comprise frame (1), upper core box, lower core box, plunger tip bar (2), and to constrain on lower core box can before and after loose core after slippage and can the left side of left and right slippage to loose core and loose core in the right side, lower core box is arranged on the lower mold holder (11) of frame (1); It is characterized in that: also comprise
Be located at the push pedal (3) of described lower mold holder (11) below, push pedal (3) is promoted by oil cylinder (4) and can move up and down, and the lower end of described plunger tip bar (2) is fixed in push pedal (3);
The guide rod (5) that two parallel interval are arranged, each guide rod (5) constrains in frame (1) slippage up and down relatively of the upper also energy of frame (1), the lower end of described each guide rod (5) is fixed in push pedal (3), and described upper core box is fixed on guide rod (5) and goes up and move up and down with guide rod (5);
In order to loose core the left push rod (6a) be connected with a left side, to loose core the right push rod (6b) be connected with the right side, with after to loose core the rear push-rod (6c) be connected, left push rod (6a) and right push rod (6b) constrain in the left and right slippage of lower mold holder (11) upper also energy, rear push-rod (6c) constrains in slippage before and after the upper also energy of lower mold holder (11), left push rod (6a) is arranged with and makes left push rod (6a) keep the outer left spring (61) moving trend, right push rod (6b) is arranged with and makes right push rod (6b) keep the outer right spring (62) moving trend, rear push-rod (6c) is arranged with and makes rear push-rod (6c) keep outer rear spring (63) of moving trend,
Rotation is arranged on the left driving cam (7a) on lower mold holder (11), right driving cam (7b) and rear drive cam (7c), the outer end of described left push rod (6a) and the side face of left driving cam (7a) are conflicted, the outer end of described right push rod (6b) and the side face of right driving cam (7b) are conflicted, the outer end of described rear push-rod (6c) and the side face of rear drive cam (7c) are conflicted, and be connected by first connecting rod (8a) between described left driving cam (7a) and rear drive cam (7c), be connected by second connecting rod (8b) between described right driving cam (7b) and rear drive cam (7c), to make each driving cam (7a, 7b, 7c) can synchronously deflect, and make each driving cam (7a, 7b, high position 7c) or low level side face are all synchronous with each push rod (6a, 6b, 6c) contact,
Be connected by drive mechanism between push pedal (3) with rear drive cam (7c), this drive mechanism can make the slippage up and down of push pedal (3) drive rear drive cam (7c) to rotate.
2. the link gear taking out plunger tip and folding mould for core-shooting box die according to claim 1, is characterized in that: described drive mechanism comprises
Be arranged on the driving gear (72) on the power transmission shaft (71) of rear drive cam (7c);
Be fixed on the drive plate (9) in push pedal (3);
Constraining under frame (1) can the sliding rack (10) of left and right slippage, by muscle slot fit anatomical connectivity between the back side of drive plate (9) and sliding rack (10), this muscle slot fit structure can make moving up and down of drive plate (9) drive sliding rack (10) left and right slippage;
Rotating support is at the power transmission shaft (12) of lower mold holder (11) below, this power transmission shaft (12) is fixed with the first driven gear (13) and the second driven gear (14), wherein the first driven gear (13) and driving gear (72) combine, and the second driven gear (14) engages with the bar shaped teeth portion transmission on described sliding rack (10).
3. the link gear taking out plunger tip and folding mould for core-shooting box die according to claim 2, it is characterized in that: described lower mold holder (11) is fixed with left mounting blocks (15a), right mounting blocks (15b) and rear mounting blocks (15c), the activity of described left push rod (6a) is located on left mounting blocks (15a), right push rod (6b) activity is located on right mounting blocks (15b), and rear push-rod (6c) activity is located on rear mounting blocks (15c); Left push rod (6a) is fixed with left baffle ring (16a), the two ends of described left spring (61) are supported between left mounting blocks (15a) and left baffle ring (16a) respectively, right push rod (62) is fixed with right baffle ring (16b), the two ends of described right spring (62) are supported between right mounting blocks (15b) and right baffle ring (16b) respectively, rear push-rod (63) is fixed with rear baffle ring (16c), the two ends of described rear spring (63) are supported between rear mounting blocks (15c) and rear baffle ring (16c) respectively.
4. the link gear taking out plunger tip and folding mould for core-shooting box die according to claim 2, it is characterized in that: described muscle slot fit structure comprises the convex tendon (91) being arranged on and drive plate (9) front end face is obliquely installed from top to bottom, and being arranged on the chute (101) that sliding rack (10) back side is obliquely installed, described convex tendon (91) is positioned at chute (101).
5. the link gear taking out plunger tip and folding mould for core-shooting box die according to claim 2, it is characterized in that: about two spaced sliding rails (17) are fixed in described frame (1) below, sliding rail (17) has guide groove (171), the two ends of described sliding rack (10) constrain in the guide groove (171) of two sliding rails respectively, and described drive plate (9) is positioned between two sliding rails (17).
6. the link gear taking out plunger tip and folding mould for core-shooting box die according to claim 2, it is characterized in that: described sliding rack (10) two ends are provided with roller (18), one of them roller (18) is positioned at the guide groove (171) of one of them sliding rail, and another roller (18) is positioned at the guide groove (171) of another sliding rail.
7. the link gear taking out plunger tip and folding mould for core-shooting box die according to claim 1, is characterized in that: described guide rod (5) is provided with between the upper and lower every arranging the spacing shaft shoulder (51) in order to retrain upper core box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139214.7A CN103949582B (en) | 2014-04-08 | 2014-04-08 | For the link gear taking out plunger tip and folding mould of core-shooting box die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410139214.7A CN103949582B (en) | 2014-04-08 | 2014-04-08 | For the link gear taking out plunger tip and folding mould of core-shooting box die |
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| Publication Number | Publication Date |
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| CN103949582A CN103949582A (en) | 2014-07-30 |
| CN103949582B true CN103949582B (en) | 2016-02-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899635B (en) * | 2019-11-27 | 2021-05-11 | 含山县富瑞机械厂 | Ejecting mechanism for double-station core shooting machine |
| CN113085363A (en) * | 2021-03-30 | 2021-07-09 | 江西万丽龙实业有限公司 | Flexible printing device for packaging carton |
| CN113941691B (en) * | 2021-12-21 | 2022-03-04 | 象山同家模具制造有限公司 | Automatic casting mould of loosing core |
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| JP2002001487A (en) * | 2000-06-15 | 2002-01-08 | Honda Motor Co Ltd | Casting device for cylinder head |
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| CN201405043Y (en) * | 2009-05-08 | 2010-02-17 | 秦皇岛开发区春光铸造机械有限公司 | Sand core combination machine |
| CN202725969U (en) * | 2012-09-06 | 2013-02-13 | 常德奇彩科技有限公司 | Novel core pulling mechanism for die |
| CN203936324U (en) * | 2014-04-08 | 2014-11-12 | 宁波全力机械模具有限公司 | For the link gear of taking out plunger tip and folding mould of core-shooting box die |
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2014
- 2014-04-08 CN CN201410139214.7A patent/CN103949582B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002001487A (en) * | 2000-06-15 | 2002-01-08 | Honda Motor Co Ltd | Casting device for cylinder head |
| CN101352752A (en) * | 2008-09-11 | 2009-01-28 | 冯新林 | Cold-box core blower |
| CN201405043Y (en) * | 2009-05-08 | 2010-02-17 | 秦皇岛开发区春光铸造机械有限公司 | Sand core combination machine |
| CN202725969U (en) * | 2012-09-06 | 2013-02-13 | 常德奇彩科技有限公司 | Novel core pulling mechanism for die |
| CN203936324U (en) * | 2014-04-08 | 2014-11-12 | 宁波全力机械模具有限公司 | For the link gear of taking out plunger tip and folding mould of core-shooting box die |
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Denomination of invention: Linkage mechanism for core pulling and ejecting and die opening and closing of core shooting box die Effective date of registration: 20171206 Granted publication date: 20160210 Pledgee: Bank of Ningbo branch of the Bank of Ningbo, Xiangshan branch Pledgor: NINGBO QUANLI MACHINERY MOLD Co.,Ltd. Registration number: 2017330000258 |
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Date of cancellation: 20230911 Granted publication date: 20160210 Pledgee: Bank of Ningbo branch of the Bank of Ningbo, Xiangshan branch Pledgor: NINGBO QUANLI MACHINERY MOLD Co.,Ltd. Registration number: 2017330000258 |
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