CN102909834B - Rack double ejection device - Google Patents
Rack double ejection device Download PDFInfo
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- CN102909834B CN102909834B CN201210418625.0A CN201210418625A CN102909834B CN 102909834 B CN102909834 B CN 102909834B CN 201210418625 A CN201210418625 A CN 201210418625A CN 102909834 B CN102909834 B CN 102909834B
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- push rod
- rack
- support plate
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Abstract
The invention discloses a rack double ejection device. The rack double ejection device comprises a gear (1), an ejection rod rack (2) and a carrier plate rack (3). When the rack double ejection device comprising the above members is in work, a tail column of an injection molding machine pushes an ejection plate and drives a material head pulling and ejecting rod and a product ejecting rod to slowly push forward a product and a cold material head for de-molding; when the product and a mold core are loosened, the gear moving forward along with the ejection plate meets with the carrier plate rack and is engaged with the carrier plate rack, the ejection rod rack drives the product ejecting rod to push the product to depart from the mold core at a speed which is twice the speed of moving forward the ejection plate and the material head pulling and ejecting rod under the rotation action of the mutual engagement of the gear, the ejection rod rack and the carrier plate rack; and meanwhile, according to the technical scheme that the product and the cold material head are cut and separated by utilizing speed difference between the product and the cold material head, double ejection of a mold not only can improve the de-molding efficiency but also can be used for automatically cutting and separating the product and the cold material head, so that the purposes of improving the de-molding efficiency, reducing the working intensity, saving the time and labor, and lowering the cost are achieved.
Description
Technical field
The present invention relates to the ejection stripping device of injection mold, specifically refer to and divide secondary that coated power is comparatively large and a kind of Rack double ejection device of the deep cavity shape goods ejection device that coated length is darker for injection mold.
Background technology
And the ejection device of deep cavity shape goods that coated length darker comparatively large for coated power, prior art adopts lever secondary ejection device, namely, push rod first slowly ejects with top board, make the goods be coated on core occur to loosen, then prize push rod by lever-type seesaw, accelerate the goods loosened to eject disengaging core, shorten the time of whole ejection process, to improve the efficiency of article removal; Due to lever, to prize the distance that goods accelerate to eject limited, and for the dark type injection-molded item that coated length is darker, the ejection cycle shortened is also limited, therefore the efficiency improved few; In addition, the distance accelerating to eject due to lever is limited, be difficult to utilize the stub bar ejected at a slow speed with top board to draw push rod to be separated with cold burden head fracture by goods with the range difference of the goods push rod ejected with lever-type acceleration, therefore still need large by working strength, time-consuming, efficiency is low, cost is high manually carries out fracture, therefore, there are the problems and shortcomings that demoulding efficiency is low, working strength is large, time-consuming, cost is high in prior art.
Summary of the invention
For above-mentioned prior art Problems existing with not enough, the present invention adopts the device be made up of gear, push rod tooth bar, support plate tooth bar, be fixedly installed on top board place gear being rotatable, push rod tooth bar is parallel to each other with support plate tooth bar and teeth face is relative, wherein, push rod tooth bar is positioned at the left side and the gears meshing of gear, and the upper end of push rod tooth bar is fixedly connected with the lower end of goods push rod, the support plate tooth bar top be positioned on the right of gear is fixedly connected on below dynamic model support plate, and support plate tooth bar can moving up to meet with the right of gear and engage with top board, during work, the stern post pushing tow top board of injection machine also drives stub bar to draw push rod, goods push rod is driven forward goods and the demoulding of cold burden head at a slow speed, when goods and core occur to loosen, the gear moved forward with top board meets with support plate tooth bar and engages, by gear, push rod tooth bar, the intermeshing rotary action of support plate tooth bar, push rod rack drives goods push rod accelerates to promote goods with two speeds that top board and stub bar draw push rod to move forward and departs from core, simultaneously, the technical scheme utilizing the speed difference between goods with cold burden head to realize goods to be separated with cold burden head fracture, a kind of Rack double ejection device is provided, be intended to be ejected by the speed of push rod tooth bar, make the Double-ejection of mould not only can improve demoulding efficiency can also be used for goods and be separated with the automatic cutting of cold burden head, reach raising demoulding efficiency, reduce working strength, saving of work and time, the object reduced costs.
The object of the present invention is achieved like this: a kind of Rack double ejection device, comprises gear, push rod tooth bar, support plate tooth bar, wherein: described gear is cylindrical straight gear involute steel gear;
Described push rod tooth bar is the rectangular slat shape steel components that a long side face is provided with trapezoidal teeth;
Described support plate tooth bar is the rectangular slat shape steel components that a long side face is provided with trapezoidal teeth;
Be fixedly installed on top board place gear being rotatable, push rod tooth bar is parallel to each other with support plate tooth bar and teeth face is relative, wherein, push rod tooth bar is positioned at the left side and the gears meshing of gear, the upper end of push rod tooth bar is fixedly connected with the lower end of goods push rod, the lower end that goods push rod and push rod tooth bar connect also is provided with step ledge and contacts with above top board, the lower end of push rod tooth bar and contacting above of base plate; The support plate tooth bar top be positioned on the right of gear is fixedly connected on below dynamic model support plate, and support plate tooth bar can moving up to meet with the right of gear and engage with top board, the meeting of the lower end of support plate tooth bar and gear engage distance be apart called and eject spacing slowly.
Operation principle and beneficial effect
During application, mould is horizontal installation, and the above-below direction that structure describes is the fore-and-aft direction of job description.
During work, the stern post pushing tow top board of injection machine also drives stub bar to draw push rod, goods push rod driven forward cold burden head and article removal at a slow speed, when goods and core occur to loosen, now, the capable Bi Suoshu of gear with top board reach ejects spacing slowly and meets with support plate tooth bar and engage, by gear, push rod tooth bar, the intermeshing rotary action of support plate tooth bar, push rod rack drives goods push rod accelerates to promote goods and departs from core; Because top board continues to move forward at a slow speed, push rod tooth bar is equal with the speed that top board is pushed ahead relative to gear translational speed forward, two phase velocity superpositions, then now, the speed of goods push rod pushing tow goods is two times that stub bar draws translational speed before push rod pushing tow cold burden head, thus be called speed, utilize the speed difference accelerating to eject between stage articles and cold burden head, goods are separated with cold burden head fracture.
This device is convenient to the length choosing push rod tooth bar, support plate tooth bar as required, lengthens speed to greatest extent and ejects distance, improve demoulding efficiency to meet deep cavity shape goods mould; Also utilize the speed difference between goods with cold burden head to realize goods to be separated with the automatic cutting of cold burden head simultaneously, thus improve demoulding efficiency, reduce working strength, save man-hour, reduce cost.
Above-mentioned, the present invention adopts the device be made up of gear, push rod tooth bar, support plate tooth bar, be fixedly installed on top board place gear being rotatable, push rod tooth bar is parallel to each other with support plate tooth bar and teeth face is relative, wherein, push rod tooth bar is positioned at the left side and the gears meshing of gear, and the upper end of push rod tooth bar is fixedly connected with the lower end of goods push rod, the support plate tooth bar top be positioned on the right of gear is fixedly connected on below dynamic model support plate, and support plate tooth bar can moving up to meet with the right of gear and engage with top board, during work, the stern post pushing tow top board of injection machine also drives stub bar to draw push rod, goods push rod is driven forward goods and the demoulding of cold burden head at a slow speed, when goods and core occur to loosen, the gear moved forward with top board meets with support plate tooth bar and engages, by gear, push rod tooth bar, the intermeshing rotary action of support plate tooth bar, push rod rack drives goods push rod accelerates to promote goods with two speeds that top board and stub bar draw push rod to move forward and departs from core, simultaneously, the technical scheme utilizing the speed difference between goods with cold burden head to realize goods to be separated with cold burden head fracture, overcoming prior art, to there is demoulding efficiency low, working strength is large, time-consuming, the problems and shortcomings that cost is high, a kind of Rack double ejection device provided, ejected by the speed of push rod tooth bar, make the Double-ejection of mould not only can improve demoulding efficiency but also can be used in goods to be separated with the automatic cutting of cold burden head, reach raising demoulding efficiency, reduce working strength, saving of work and time, the object reduced costs.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of Rack double ejection device of the present invention is arranged in application mould;
Fig. 2 is the extraction enlarged drawing in A portion in Fig. 1;
Fig. 3 is a kind of Rack double ejection device of the present invention, is operated in the principle schematic ejecting spacing tense slowly;
Fig. 4 is a kind of Rack double ejection device of the present invention, is operated in the principle schematic accelerating to eject stage tense.
Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but should not be construed as any limitation of the invention.
In figure: gear 1, push rod tooth bar 2, support plate tooth bar 3, dynamic model 01, core 02, dynamic model support plate 03, top board 04, base plate 041, stub bar draw push rod 05, goods push rod 06, the post 07 that returns back to top, cover half 08, goods 09, cold burden head 010, stern post 011.
Detailed description of the invention
Consult Fig. 1 ~ Fig. 4, a kind of Rack double ejection device of the present invention, comprise gear 1, push rod tooth bar 2, support plate tooth bar 3, wherein: described gear 1 is cylindrical straight gear involute steel gear;
Described push rod tooth bar 2 is the rectangular slat shape steel components that a long side face is provided with trapezoidal teeth;
Described support plate tooth bar 3 is the rectangular slat shape steel components that a long side face is provided with trapezoidal teeth;
Gear 1 is fixedly installed on top board 04 place rotationally, push rod tooth bar 2 is parallel to each other with support plate tooth bar 3 and teeth face is relative, wherein, the left side that push rod tooth bar 2 is positioned at gear 1 is engaged with gear 1, the upper end of push rod tooth bar 2 is fixedly connected with the lower end of goods push rod 06, the lower end that goods push rod 06 and push rod tooth bar 2 connect also is provided with step ledge and contacts with above top board 04, the lower end of push rod tooth bar 2 and contacting above of base plate 041; Support plate tooth bar 3 top be positioned on the right of gear 1 is fixedly connected on below dynamic model support plate 03, support plate tooth bar 3 can moving up to meet with the right of gear 1 and engage with top board 04, the meeting of the lower end of support plate tooth bar 3 and gear 1 engage distance be apart called and eject spacing slowly.
Operation principle and beneficial effect
During application, mould is horizontal installation, and the above-below direction that structure describes is the fore-and-aft direction of job description.
During work, the stern post 011 pushing tow top board 04 of injection machine also drives stub bar to draw driven forward cold burden head 010 and goods 09 demoulding at a slow speed of push rod 05, goods push rod 06, when goods 09 and core 02 occur to loosen, now, the gear 1 row Bi Suoshu moved forward with top board 04 ejects spacing slowly and meets with support plate tooth bar 3 and engage, by gear 1, push rod tooth bar 2, the intermeshing rotary action of support plate tooth bar 3, push rod tooth bar 2 drives goods push rod 06 acceleration promotion goods 09 to depart from core 02; Because top board 04 continues to move forward at a slow speed, push rod tooth bar 2 is equal with the speed that top board 04 is pushed ahead relative to gear 1 translational speed forward, two phase velocity superpositions, then now, the speed of goods push rod 06 pushing tow goods 09 is two times that stub bar draws translational speed before push rod 05 pushing tow cold burden head 010, thus be called speed, utilize the speed difference accelerating to eject between stage articles 09 and cold burden head 010, goods 09 are separated with cold burden head 010 fracture.
This device is convenient to the length choosing push rod tooth bar 2, support plate tooth bar 3 as required, lengthens speed to greatest extent and ejects distance, improve demoulding efficiency to meet deep cavity shape goods mould; Also utilize the speed difference between goods 09 with cold burden head 010 to realize goods 09 to be separated with the automatic cutting of cold burden head 010 simultaneously, thus improve demoulding efficiency, reduce working strength, save man-hour, reduce cost.
Claims (1)
1. a Rack double ejection device, comprises gear (1), push rod tooth bar (2), support plate tooth bar (3), it is characterized in that: described gear (1) is cylindrical straight gear involute steel gear; Described push rod tooth bar (2) is the rectangular slat shape steel components that a long side face is provided with trapezoidal teeth; Described support plate tooth bar (3) is the rectangular slat shape steel components that a long side face is provided with trapezoidal teeth; Gear (1) is fixedly installed on top board (04) place rotationally, push rod tooth bar (2) is parallel to each other with support plate tooth bar (3) and teeth face is relative, wherein, the left side that push rod tooth bar (2) is positioned at gear (1) is engaged with gear (1), the upper end of push rod tooth bar (2) is fixedly connected with the lower end of goods push rod (06), the lower end that goods push rod (06) and push rod tooth bar (2) connect also is provided with step ledge and contacts with above top board (04), the lower end of push rod tooth bar (2) and contacting above of base plate (041); The top that support plate tooth bar (3) is positioned at gear (1) the right is fixedly connected on below dynamic model support plate (03), support plate tooth bar (3) can moving up to meet with the right of gear (1) and engage with top board (04), the meeting of the lower end of support plate tooth bar (3) and gear (1) engage distance be apart called and eject spacing slowly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210418625.0A CN102909834B (en) | 2012-10-15 | 2012-10-15 | Rack double ejection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210418625.0A CN102909834B (en) | 2012-10-15 | 2012-10-15 | Rack double ejection device |
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| Publication Number | Publication Date |
|---|---|
| CN102909834A CN102909834A (en) | 2013-02-06 |
| CN102909834B true CN102909834B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210418625.0A Active CN102909834B (en) | 2012-10-15 | 2012-10-15 | Rack double ejection device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171962A (en) * | 2015-08-13 | 2015-12-23 | 宁波瑞元模塑有限公司 | Anti-adhesion die for thin-walled deep screw column hole |
| CN114290625A (en) * | 2022-01-11 | 2022-04-08 | 宁波方正汽车模具股份有限公司 | Injection mold mechanism of expecting absolutely |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174430A (en) * | 1987-12-29 | 1989-07-11 | Niigata Eng Co Ltd | Ejecting device for injection molding machine |
| CN101954722A (en) * | 2010-09-15 | 2011-01-26 | 宁海瑞元模塑有限公司 | Delay forced de-molding mechanism of injection mold |
| CN202021758U (en) * | 2010-12-30 | 2011-11-02 | 柳州五菱汽车有限责任公司 | Injection molding die for bumper |
| CN202826302U (en) * | 2012-10-15 | 2013-03-27 | 宁波瑞元模塑有限公司 | Secondary rack ejecting device |
-
2012
- 2012-10-15 CN CN201210418625.0A patent/CN102909834B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174430A (en) * | 1987-12-29 | 1989-07-11 | Niigata Eng Co Ltd | Ejecting device for injection molding machine |
| CN101954722A (en) * | 2010-09-15 | 2011-01-26 | 宁海瑞元模塑有限公司 | Delay forced de-molding mechanism of injection mold |
| CN202021758U (en) * | 2010-12-30 | 2011-11-02 | 柳州五菱汽车有限责任公司 | Injection molding die for bumper |
| CN202826302U (en) * | 2012-10-15 | 2013-03-27 | 宁波瑞元模塑有限公司 | Secondary rack ejecting device |
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| CN102909834A (en) | 2013-02-06 |
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