CN201989304U - Die and ejection mechanism thereof - Google Patents
Die and ejection mechanism thereof Download PDFInfo
- Publication number
- CN201989304U CN201989304U CN2011201178569U CN201120117856U CN201989304U CN 201989304 U CN201989304 U CN 201989304U CN 2011201178569 U CN2011201178569 U CN 2011201178569U CN 201120117856 U CN201120117856 U CN 201120117856U CN 201989304 U CN201989304 U CN 201989304U
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- tooth bar
- gear
- mould
- jacking block
- ejecting mechanism
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Abstract
The utility model discloses a die and an ejection mechanism thereof. The ejection mechanism of the die comprises an ejection plate, an ejection block, an ejection rod and a transmission component, the rear end of the ejection block is supported on the ejection plate, the front end of the ejection block extends forwards, the ejection rod and the ejection block are in slide fit in the extending direction of the ejection block, the transmission component comprises a first rack, a second rack and a gear mechanism, the first rack is parallel to the second rack, the first rack and the second rack are respectively fixed with a rear die and the ejection rod, and the gear mechanism is mounted on the ejection block and is simultaneously in mesh connection with the first rack and the second rack. The ejection mechanism can eject runner condensed materials generated at a concealed spure gate located at the best spure gate position.
Description
Technical field
The utility model relates to a kind of Tool and Die Technology, and particularly a kind of ejecting mechanism of mould also relates to the mould that comprises this ejecting mechanism.
Background technology
Based on the characteristic of plastic material, current, usually according to the corresponding mould of the structural design of plastic products, and utilize injection machine to make plastic products.This mould generally includes front mould and back mould, and some mould also comprises intermediate die, and forms the fuse of plastic products internal structure; When matched moulds, form predetermined die cavity in the mould; During injection moulding, inject liquid plastics by suitable cast gate in die cavity, the cooling back forms predetermined plastic products in die cavity; And then make plastic products and mold separation by ejecting mechanism.
The cast gate of mould has multiple, for example trumpet assembly, side gate, dive cast gate, fan gate, circular gate or the like.Ejecting mechanism generally includes top board and according to the jacking block of plastic products structural configuration, jacking block can with the same moved further of top board, so that plastic products are ejected.
Current, in the mould design, generally rely on the best gate location of the selected plastic products of analysis software and professional molding experience, to guarantee the structure and the quality of plastic products.When the position of best cast gate is positioned at the inner surface, side of plastic products or other concealed locations, tunnel gate just need be set carry out injection moulding, in injection moulding process, tunnel gate can form runner and coagulate material.
When plastic products are ejected by slanted kicking block, just the runner in the tunnel gate need be coagulated material and eject, make runner coagulate material and separate with plastic products.If design another auxiliary ejecting mechanism again runner is expected to eject with fixed attention, because the push rod of auxiliary ejecting mechanism need pass slanted kicking block, the ejecting mechanism design difficulty is very big; Therefore, in the mould that actual manufacturing is used, or abandon tunnel gate, use other cast gate chargings instead, or just abandon best gate location, select other designs, to avoid the adverse effect of slanted kicking block.This dual mode all can reduce the quality of plastic products.
Therefore, comprise at ejecting mechanism under the situation of slanted kicking block that how will being positioned at runner that the tunnel gate of best gate location forms, to coagulate that material ejects be the technical barrier that current those skilled in the art need solve.
The utility model content
Therefore, the purpose of this utility model is, a kind of ejecting mechanism of mould is provided, and the runner that this ejecting mechanism can form the tunnel gate that is positioned at best gate location coagulates material and ejects.
The ejecting mechanism of the mould that the utility model provides comprises top board and jacking block, and the rear end of described jacking block is supported on the top board, and the front end of jacking block stretches out forward; Also comprise knock-pin and transmission component; Described knock-pin and jacking block are slidingly matched stretching out on the direction of jacking block; Described transmission component comprises first tooth bar, the second rack and pinion mechanism; Described first tooth bar is parallel with second tooth bar, and fixes with back mould and knock-pin respectively; Described gear mechanism is installed on the jacking block, and engagement links to each other with second tooth bar with first tooth bar simultaneously.
Optionally, form sharp angle between the die sinking direction of stretching out direction and mould of described jacking block.
Optionally, described gear mechanism comprises that at least one is installed in the idler gear on the jacking block rotatably, and described idler gear is between first tooth bar and second tooth bar, and while and first tooth bar and the engagement of second tooth bar.
Optionally, described transmission component comprises at least two described idler gears arranging along the bearing of trend of second tooth bar.
Optionally, this ejecting mechanism comprises a plurality of described transmission components, and the idler gear of each described transmission component is installed on the jackshaft, and described jackshaft is slidingly matched with described jacking block on the heart line direction therein.
Optionally, described gear mechanism comprises at least one gear train, and described gear train comprises co-axially fixed driving gear and driven gear, described driving gear and the engagement of first tooth bar, described driven gear and the engagement of second tooth bar.
Optionally, this ejecting mechanism comprises a plurality of described transmission components, and the gear train of each described transmission component is installed on the jackshaft, and described jackshaft is slidingly matched with described jacking block on the heart line direction therein.
Optionally, this ejecting mechanism also comprises the adjusting driving lever, and described adjusting driving lever links to each other with described jackshaft.
Optionally, described back mould is provided with rack slide, the gear fixed block that described jacking block is provided with the gear slideway and cooperates with the gear slideway; Described rack slide and gear slideway all extend on the first tooth bar bearing of trend; Described rack slide cooperates with first tooth bar; Described gear mechanism is installed on the described gear fixed block.
The mould that the utility model provides comprises back mould, front mould and ejecting mechanism, and described ejecting mechanism is the ejecting mechanism of above-mentioned any mould, and described jacking block is slidingly matched with the back mould.
Compared with prior art, the ejecting mechanism of the mould that provides of the utility model also comprises knock-pin and transmission component; Described knock-pin and jacking block are slidingly matched stretching out on the direction of jacking block; Described transmission component comprises the first parallel tooth bar and second tooth bar; Described first tooth bar and second tooth bar are fixed with back mould and knock-pin respectively, and by the gear mechanism transmission.In the process of ejecting, jacking block ejects plastic products along with top board moves forward; Simultaneously, because first tooth bar is maintained fixed with the back mould, when jacking block driven gear mechanism moves forward with respect to the back mould, gear mechanism drives second tooth bar and knock-pin moves forward with respect to jacking block, and then make knock-pin can be formed at the jacking block front end, form runner in the tunnel gate and coagulate material and eject, make runner coagulate material and separate with plastic products.The runner that utilizes this ejecting mechanism the tunnel gate that is positioned at best gate location can be formed coagulates material and ejects.In addition, knock-pin is not limited to that runner is coagulated material and ejects, and also other parts can be ejected.
In further technical scheme, form sharp angle between the die sinking direction of stretching out direction and mould of described jacking block.Like this, this ejecting mechanism is comprising under the situation of slanted kicking block, and knock-pin can be moved forward with respect to jacking block, and then avoids slanted kicking block to ejecting the adverse effect of operation.
In optional technical scheme, gear mechanism comprises the idler gear that meshes simultaneously with first tooth bar and second tooth bar.This technical scheme has simple in structure, the advantage that reliability is high.
In further technical scheme, described transmission component comprises at least two idler gears arranging along the first tooth bar bearing of trend.This technical scheme can guarantee the stress balance of first tooth bar and second tooth bar, improves the functional reliability of ejecting mechanism.
In further technical scheme, comprise a plurality of transmission components, the idler gear of each described transmission component is installed on the jackshaft, and described jackshaft is slidingly matched with described jacking block on the heart line direction therein.Can by adjusting the position of jackshaft, the position of the idler gear of each transmission component be changed according to actual needs like this, a predetermined transmission component is played a role; And then, under the different situation of transmission component gearratio, can regulate the translational speed of knock-pin according to actual needs with respect to jacking block, satisfy more actual conditions needs.
In further technical scheme, described gear mechanism comprises at least one gear train, and described gear train comprises co-axially fixed driving gear and driven gear, described driving gear and the engagement of first tooth bar, described driven gear and the engagement of second tooth bar.Can select the driving gear and the driven gear of different moduluses in this technical scheme according to actual needs, adjust the gearratio between first tooth bar and second tooth bar, and then realize adjusting the knock-pin translational speed.
In further technical scheme, described back mould is provided with rack slide, the gear fixed block that described jacking block is provided with the gear slideway and cooperates with the gear slideway; Described rack slide and gear slideway all extend on the bearing of trend of first tooth bar; Described rack slide cooperates with first tooth bar; Described gear mechanism is installed on the described gear fixed block.This technical scheme can reach the position relation between gear mechanism and the jacking block by changing the position relation between first tooth bar and the back mould, changes the longest extension elongation of knock-pin, satisfies more actual needs.
Because ejecting mechanism has above-mentioned technique effect, comprises that the mould of this ejecting mechanism also has corresponding technique effect.
Description of drawings
Fig. 1 is the structural representation of the injection moulding that provides of the utility model embodiment with mould, and this illustrates the structure after the mold-closing injection;
Fig. 2 is an I-I part enlarged drawing among Fig. 1;
Fig. 3 is the structure chart of the injection moulding that provides of the utility model embodiment during with the mould die sinking.
The specific embodiment
Below in conjunction with accompanying drawing content of the present utility model is described in detail, the description of this part only is exemplary and explanatory, should not be construed as the restriction of the utility model public technology content.
In this part, described " preceding " and the nouns of locality such as " backs " be all with the die sinking direction, i.e. front mould is reference with respect to the moving direction of back mould during die sinking, before the position of die sinking direction is, after rightabout position is.
For the convenience of describing, in this part, be described with structure, the operation principle of the ejecting mechanism of injection moulding mould mould that to be example provide the utility model and mould; Structure for the ejecting mechanism of mould is described no longer separately.Should be noted that the technical scheme that the utility model provides is not limited to be used to make plastic products, also can be used to make other goods, the goods that have same or similar characteristic such as: foamed material product or other and plastic products.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the injection moulding that provides of the utility model embodiment with mould, and this illustrates the structure after the mold-closing injection; Fig. 2 is an I-I part enlarged drawing among Fig. 1.This mould comprises back mould 100, front mould 200 and ejecting mechanism.During die sinking, front mould 200 is among the figure shown in the arrow A with respect to the moving direction of back mould 100.
In addition, ejecting mechanism also comprises knock-pin 330 and transmission component 340; Knock-pin 330 is slidingly matched stretching out on the direction of jacking block 320 with jacking block 320, in position near tunnel gate, jacking block 320 is provided with the fairlead that is slidingly matched with knock-pin 330, with the moving direction of restriction knock-pin 330, knock-pin 330 can be moved with respect to jacking block 320 stretching out on the direction of jacking block 320.While knock-pin 330 front ends withstand on the runner of tunnel gate and expect on 500 with fixed attention.Transmission component 340 comprises first tooth bar 341, second tooth bar 342 and idler gear 343.First tooth bar 341 and second tooth bar 342 are parallel to each other, and fixing with back mould 100 and knock-pin 330 respectively; First tooth bar 341 and second tooth bar 342 can be one-body molded with back mould 100 and knock-pin 330 respectively, also can be separately fixed at back mould 100 and knock-pin 330 by securing member or other modes.Idler gear 343 is rotatably installed on the jacking block 320, and its center line is vertical with first tooth bar, 341 bearing of trends; And idler gear 343 is clipped between first tooth bar 341 and second tooth bar 342, keeps engagement with first tooth bar 341 and second tooth bar 342 simultaneously.
The course of work of above-mentioned mould and ejecting mechanism is as follows:
Based on state shown in Figure 1, and with reference to figure 3, Fig. 3 is the structure chart of the injection moulding that provides of the utility model embodiment during with the mould die sinking.Front mould 200 is moved along direction A with respect to back mould 100, and front mould 200 separates with back mould 100.Then, the push rod by injection machine or other mechanisms drive top board 310 and move forward, and jacking block 320 moves forward with B shown in scheming, and plastic products 400 are separated with the core of back mould 100.Simultaneously, knock-pin 330 drives idler gear 343 and moves at the bearing of trend of jacking block 320 with respect to back mould 100, and idler gear 343 is owing to rotating with 341 engagements of first tooth bar; Idler gear 343 rotations drive second tooth bar 342 and move, because second tooth bar 342 is fixing with knock-pin 330, thereby can drive knock-pin 330 with respect to jacking block 320 with B in the diagram to moving, make the runner that is positioned at the die joint rear expect that with fixed attention 500 separate with jacking block 320 front ends.In a word, in the process of ejecting, with respect to back mould 100, the translational speed of knock-pin 330 is greater than the translational speed of jacking block 320, jacking block 320 makes plastic products 400 and back mould 100 when separating, and knock-pin 330 can make runner expect that with fixed attention 500 separate with jacking block 320, separates with plastic products 400 simultaneously.When best gate location adopted tunnel gate, the ejecting mechanism that the utility model provides can be when ejecting plastic products 400, and the runner that tunnel gate is formed expects that with fixed attention 500 separate with jacking block 320 and plastic products 400, and runner is expected that with fixed attention 500 eject.
Certainly, the ejecting mechanism that the utility model provides is not limited to when plastic products 400 are ejected, and the runner that tunnel gate forms is expected that with fixed attention 500 eject, and also other predetermined portions can ejected, and realizes predetermined purpose.Certainly, jacking block 320 is not limited to slanted kicking block, also can be for going up the jacking block that extends with die sinking direction A.
In order to guarantee the stability and the reliability of transmission component 340 work, transmission component 340 also can comprise two or more idler gears 343, and a plurality of idler gears 343 are arranged along the bearing of trend of first tooth bar 341, a plurality of idler gears 343 keep the engagement with first tooth bar 341 and second tooth bar 342, can guarantee the stress balance of first tooth bar 341 and second tooth bar 342, improve the stability and the reliability of ejecting mechanism work.
In this example, first tooth bar 341 and second tooth bar 342 and idler gear 343 engagements, on direction B, knock-pin 330 equates with the translational speed V2 of jacking block with respect to back mould 100 with respect to the speed V1 that jacking block 320 moves.In order to change the ratio between V1 and the V2 according to actual needs, can also improve ejecting mechanism.Such as: can make ejecting mechanism comprise a plurality of transmission components 340, and make the modulus of idler gear 343 of each transmission component 340 different, and the idler gear 343 that makes each transmission component 340 is installed on the jackshaft, and this jackshaft is slidingly matched with jacking block 320 on the heart line direction therein.Like this, by changing the position between this jackshaft and the jacking block 320, just can make first tooth bar 341 and 342 engagements of second tooth bar of idler gear 343 and this transmission component 340 in the predetermined transmission component 340, make the idler gear 343 of other transmission components 340 keep separating with second tooth bar 342 with corresponding first tooth bar 341, like this, make the 340 performance gearings of different transmission components just can realize knock-pin 330 speed of stretching out is regulated.In order further to make things convenient for the adjusting operation of ejecting mechanism, the adjusting driving lever can also be set, and the adjusting driving lever is linked to each other with above-mentioned jackshaft.By regulating the position that driving lever can change jackshaft, different transmission component 340 is played a role.
Realize that first tooth bar 341 and 342 transmissions of second tooth bar are not limited to realize by an idler gear 343, also can realize by other gear mechanisms, gear mechanism can comprise respectively driving gear and the driven gear with first tooth bar 341 and 342 engagements of second tooth bar, and makes the directly engagement or link to each other by other gears of driving gear and driven gear; When gear mechanism moved with respect to first tooth bar 341, the driving gear rotation drove the driven gear rotation, and driven gear drives second tooth bar 342 again and knock-pin 330 moves, and also can realize the purpose of this utility model.
Certainly, gear mechanism also can comprise gear train at least, and gear train can comprise co-axially fixed driving gear and driven gear, makes driving gear and 341 engagements of first tooth bar, driven gear and 342 engagements of second tooth bar.When gear train moved with respect to first tooth bar 341, driving gear and driven gear rotated synchronously, and driven gear can drive second tooth bar 342 again and knock-pin 330 moves, and realized the purpose of this utility model.Certainly, ejecting mechanism also can comprise a plurality of transmission components 340, and the gear train of each transmission component 340 is installed on a jackshaft, and corresponding jackshaft is slidingly matched with jacking block 320 on the heart line direction therein.By regulating the position of jackshaft, different transmission component 340 is played a role, realize the adjusting that knock-pin 330 is moved degree.Equally,, the adjusting driving lever can also be set, and the adjusting driving lever is linked to each other with above-mentioned jackshaft for making things convenient for the adjusting operation of ejecting mechanism.By regulating the position that driving lever changes jackshaft, different transmission component 340 is played a role.
In order further to improve the adaptability of ejecting mechanism, can also rack slide be set at back mould 100, the gear fixed block that the gear slideway is set and cooperates at jacking block 320 with this gear slideway; Rack slide and gear slideway all extend on first tooth bar, 341 bearing of trends; Rack slide can cooperate with first tooth bar 341; The gear mechanism of above-mentioned transmission component 340 is installed on the gear fixed block.When having said structure, according to actual needs, first tooth bar 341 is moved along rack slide, after moving to correct position, again with first tooth bar 341, equally can be by the carrier wheel fixed block to the precalculated position, again the gear fixed block is fixed, by changing position relation and the relation of the position between gear mechanism and the knock-pin 330 between first tooth bar 341 and the back mould 100, it is longer or shorter that knock-pin 330 can be stretched out, and satisfies more actual needs.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the principle prerequisite that does not break away from the utility model description; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. the ejecting mechanism of a mould comprises top board and jacking block, and the rear end of described jacking block is supported on the top board, and the front end of jacking block stretches out forward; It is characterized in that, also comprise knock-pin and transmission component; Described knock-pin and jacking block are slidingly matched stretching out on the direction of jacking block; Described transmission component comprises first tooth bar, the second rack and pinion mechanism; Described first tooth bar is parallel with second tooth bar, and fixes with back mould and knock-pin respectively; Described gear mechanism is installed on the jacking block, and engagement links to each other with second tooth bar with first tooth bar simultaneously.
2. the ejecting mechanism of mould according to claim 1 is characterized in that, forms sharp angle between the die sinking direction of stretching out direction and mould of described jacking block.
3. the ejecting mechanism of mould according to claim 1, it is characterized in that, described gear mechanism comprises that at least one is installed in the idler gear on the jacking block rotatably, and described idler gear is between first tooth bar and second tooth bar, and while and first tooth bar and the engagement of second tooth bar.
4. the ejecting mechanism of mould according to claim 3 is characterized in that, described transmission component comprises at least two described idler gears arranging along the bearing of trend of second tooth bar.
5. the ejecting mechanism of mould according to claim 3 is characterized in that, comprises a plurality of described transmission components, and the idler gear of each described transmission component is installed on the jackshaft, and described jackshaft is slidingly matched with described jacking block on the heart line direction therein.
6. the ejecting mechanism of mould according to claim 1, it is characterized in that described gear mechanism comprises at least one gear train, described gear train comprises co-axially fixed driving gear and driven gear, described driving gear and the engagement of first tooth bar, described driven gear and the engagement of second tooth bar.
7. the ejecting mechanism of mould according to claim 6 is characterized in that, comprises a plurality of described transmission components, and the gear train of each described transmission component is installed on the jackshaft, and described jackshaft is slidingly matched with described jacking block on the heart line direction therein.
8. according to the ejecting mechanism of claim 5 or 7 described moulds, it is characterized in that, also comprise the adjusting driving lever, described adjusting driving lever links to each other with described jackshaft.
9. according to the ejecting mechanism of each described mould of claim 1-7, it is characterized in that described back mould is provided with rack slide, the gear fixed block that described jacking block is provided with the gear slideway and cooperates with the gear slideway; Described rack slide and gear slideway all extend on the first tooth bar bearing of trend; Described rack slide cooperates with first tooth bar; Described gear mechanism is installed on the described gear fixed block.
10. a mould comprises back mould, front mould and ejecting mechanism, it is characterized in that described ejecting mechanism is the ejecting mechanism of each described mould of claim 1-9, and described jacking block is slidingly matched with the back mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201178569U CN201989304U (en) | 2010-11-15 | 2011-04-20 | Die and ejection mechanism thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020605959 | 2010-11-15 | ||
| CN201020605959.5 | 2010-11-15 | ||
| CN2011201178569U CN201989304U (en) | 2010-11-15 | 2011-04-20 | Die and ejection mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201989304U true CN201989304U (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201178569U Expired - Fee Related CN201989304U (en) | 2010-11-15 | 2011-04-20 | Die and ejection mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201989304U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2542024A1 (en) * | 2014-01-28 | 2015-07-29 | Comercial de Útiles y Moldes, S.A. | Device for unmolding parts (Machine-translation by Google Translate, not legally binding) |
| CN109773157A (en) * | 2019-02-28 | 2019-05-21 | 浙江华朔科技股份有限公司 | It is a kind of for the die casting of formed valve body and the ejection assembly of the mold |
| CN113732244A (en) * | 2021-08-09 | 2021-12-03 | 季华实验室 | Turbine blade wax pattern automatic ejection mechanism |
-
2011
- 2011-04-20 CN CN2011201178569U patent/CN201989304U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2542024A1 (en) * | 2014-01-28 | 2015-07-29 | Comercial de Útiles y Moldes, S.A. | Device for unmolding parts (Machine-translation by Google Translate, not legally binding) |
| US9308681B2 (en) | 2014-01-28 | 2016-04-12 | Comercial De Utiles Y Moldes, S.A. | Device for demolding parts |
| CN109773157A (en) * | 2019-02-28 | 2019-05-21 | 浙江华朔科技股份有限公司 | It is a kind of for the die casting of formed valve body and the ejection assembly of the mold |
| CN113732244A (en) * | 2021-08-09 | 2021-12-03 | 季华实验室 | Turbine blade wax pattern automatic ejection mechanism |
| CN113732244B (en) * | 2021-08-09 | 2022-11-29 | 季华实验室 | Turbine blade wax pattern automatic ejection mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG ZHUANGCHEN ELECTRICAL APPLIANCE CO., LTD. Assignor: Zheng Tianchen Contract record no.: 2014330000282 Denomination of utility model: Die and ejection mechanism thereof Granted publication date: 20110928 License type: Exclusive License Record date: 20140709 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20160420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |