CN105172064A - Core pulling mechanism for injection mold - Google Patents
Core pulling mechanism for injection mold Download PDFInfo
- Publication number
- CN105172064A CN105172064A CN201510622562.4A CN201510622562A CN105172064A CN 105172064 A CN105172064 A CN 105172064A CN 201510622562 A CN201510622562 A CN 201510622562A CN 105172064 A CN105172064 A CN 105172064A
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- CN
- China
- Prior art keywords
- slide block
- hole
- block
- spacing hole
- spacing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
A core pulling mechanism for an injection mold comprises a fixed die, a small sliding block and a big sliding block. A through hole is formed in the position, below the small sliding block, of the big sliding block. A limiting block is connected into the through hole in a sliding manner. A first limiting hole capable of being in limiting fit with the upper end of the limiting block is arranged in the lower portion of the small sliding block. A second limiting hole capable of being limiting fit with the lower end of the limiting block is formed in the upper end face of the fixed die. The length of the through hole plus the depth of the second limiting hole equals the length of the limiting block. The interval between the first limiting hole and the second limiting hole equals the sliding distance of the small sliding block relative to the big sliding block. A forcing limiting block for the small sliding block is arranged on the big sliding block. The interval between the forcing limiting block and the small sliding block equals the interval between the first limiting hole and the second limiting hole. The lower end of the limiting block is provided with a trapezoid or arc first protrusion. The second limiting hole is the same as the first protrusion in shape. Compared with the prior art, the core pulling mechanism has the beneficial effects of being small in size, simple in structure, good in use stability and long in service life.
Description
Technical field
The present invention relates to a kind of injection mould core-pulling mechanism.
Background technology
At present, have a kind of injection mould due to product structure more complicated, after needing small slide block slip certain distance, small slide block is loosed core together with large slide block again; Prior art for realize loose core time deferred action, what major part adopted is the combination that brace adds waist-shaped hole, but the spacing that this structure makes upper and lower mould open is enough large, otherwise the action of twice core pulling cannot be realized, this just causes mold integral comparatively large, and uses the space of mould also enough large, limits mold use scope, and making the whole production cycle longer, production efficiency is lower; Part is also had to be adopt pellet to carry out the locking between large small slide block, but owing to there being the existence of spring, in use easily there is bite mark and cut between pellet and lockhole and the lower surface of small slide block, and then large small slide block frictional force in sliding process is increased, heat is easily caused to be concentrated, thus making the deterioration in accuracy of size skid, stability in use is poor, also shortens service life simultaneously thereupon.
Summary of the invention
The present invention is directed to above problem and the injection mould core-pulling mechanism that a kind of volume is relatively little, structure is simple, stability in use is better and service life is longer is provided.
The present invention overcomes the above problems technical scheme used: provide a kind of injection mould core-pulling mechanism with following structure, it comprises cover half, small slide block and large slide block, described large skid is connected on cover half, small slide block is slidably connected on large slide block, large slide block below described small slide block is provided with through hole, slidably connects limited block in described through hole; Be provided with below described small slide block and coordinate the first spacing spacing hole with limited block upper end, described cover half upper surface is provided with and coordinates the second spacing spacing hole with limited block lower end; The length of described through hole adds that the degree of depth of the second spacing hole equals the length of limited block; Spacing between the first described spacing hole and the second spacing hole equals the distance of small slide block relative to large skid; Described large slide block is provided with the pressure limited block to small slide block, spacing between pressure limited block and small slide block equals the spacing between the first spacing hole and the second spacing hole, when small slide block move to be forced limited block restraining position time, first spacing hole is just in time positioned at directly over through hole, now continue to pull small slide block, small slide block slides together with large slide block; The lower end of described limited block is provided with the first projection that is trapezoidal or arc, and the second described spacing hole shape is identical with the shape of the first projection.
After adopting above structure, compared with prior art, the present invention in use, when mould is in matched moulds state, limited block is arranged in the space of through hole and the second spacing hole composition, when die sinking is loosed core, small slide block first moves right under the effect of oil cylinder until to be forced limited block spacing, now the first spacing hole is just in time positioned at directly over limited block, oil cylinder works on, now small slide block moves right together with large slide block, and owing to being empty above limited block, and it is protruding with under the effect of the second spacing hole in limited block lower end first, along with the mobile limited block of continuation of large slide block will be squeezed in the space that through hole and the first spacing hole form under the first protruding and corresponding second spacing hole effect of trapezoidal or arc, and now limited block no longer to large slide block and cover half mutually spacing, but to large slide block and small slide block mutually spacing, until large limited namely the completing of slide block is loosed core, during matched moulds, oil cylinder pushing small slide block resets, at the beginning under the effect in the space that limited block forms with through hole and the first spacing hole, small slide block moves together with large slide block, when small slide block and large slide block move integrally the second spacing hole be positioned at immediately below through hole time, limited cannot continuation is moved to the left large slide block, now small slide block is still continuing to be moved to the left until small slide block is limited, then the extruding lower position block of small slide block and large slide block moves in the space that through hole and the second spacing hole form in the process, at this moment limited block to large slide block and cover half spacing each other, make the stability of the large slide block when injection moulding better, effectively can eliminate the counter of large slide block and move back situation, ensure the injection moulding quality of product, parts of the present invention only have a limited block, and the movement of limited block relies on the structure of pure machinery to realize completely, also do not arrange driving mechanism in addition, therefore parts are less, overall volume is less, structure is also simpler, overall preparation cost is also lower, and in use small slide block and large slide block also not easily occur bite mark simultaneously, ensure that flexibility and the accuracy of small slide block and large skid, therefore stability in use is better, service life is also longer.Therefore the present invention has the advantages that volume is relatively little, structure is simple, stability in use is better and service life is longer.
As improvement, the upper end of described limited block is provided with the second projection that is trapezoidal or arc, and the first described spacing hole shape is identical with the shape of the second projection; After then such vibrational power flow, when second spacing hole is positioned at immediately below through hole, small slide block relatively large skid time, under the second protruding and corresponding first spacing hole effect of trapezoidal or arc, limited block is more easily squeezed in the space of through hole and the second spacing hole composition, better reliability, efficiency of movement is also higher, improves stability in use of the present invention and reliability further.
As further improvement, the shape of the second described projection is identical with the shape of the first projection; After then arranging like this, limited block does not have specific direction when assembling, and makes the efficiency of assembling of workman higher, and then reduces production cost of the present invention.
As improving further again, the first described projection is trapezoidal, and trapezoidal is isosceles trapezoidal structure, and isosceles trapezoid is minor face away from the limit of limited block, the limit that isosceles trapezoid is connected with limited block is long limit, and the angle in described isosceles trapezoid between hypotenuse and long limit is 5 ~ 55 °; Then this trapezium structure, is more conducive to the slip of limited block, and limited block can fast and accurately be entered on default position, improves stability in use of the present invention and reliability further.
As improving further again, be provided with backing plate between described large slide block and cover half, and the second spacing hole is positioned on backing plate; After then backing plate is arranged, backing plate can use self-lubricating material to prepare, and this just makes the slip of large slide block more flexible, and directly changes backing plate after having worn and torn, and without the need to repairing cover half, maintenance cost is also lower.
As further improving, the thickness of described backing plate is greater than the degree of depth of the second spacing hole, and described backing plate is provided with laying dust hole, and laying dust hole is positioned at immediately below the second spacing hole, and laying dust hole is communicated with the second spacing hole; After then arranging like this; the chip produced when limited block, small slide block and large skid all can be squeezed in laying dust hole; make fricative chip can not have influence on the normal slip of limited block, small slide block and large slide block; improving limited block, small slide block and large skid is stability and reliability; and then extend service life of the present invention and maintenance period, thus reduce use cost of the present invention.
As preferably, described angle is 45 °.
Preferred as another, the first described projection is arc, and central angle corresponding to arc is less than 90 °.
Accompanying drawing explanation
Fig. 1 is the structural representation of injection mould core-pulling mechanism of the present invention.
Fig. 2 be injection mould core-pulling mechanism small slide block of the present invention be forced limited block spacing time structural representation.
Fig. 3 is the structural representation that injection mould core-pulling mechanism limited block of the present invention is squeezed in the space of through hole and the first spacing hole composition.
Fig. 4 is the structural representation of injection mould core-pulling mechanism of the present invention when loosing core completely.
Fig. 5 is the enlarged drawing of part A in Fig. 1.
Shown in figure: 1, cover half, 2, small slide block, 3, large slide block, 4, through hole, 5, limited block, the 6, first spacing hole, the 7, second spacing hole, 8, force limited block, 9, first is protruding, and 10, second is protruding, and 11, backing plate, 12, laying dust hole.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
Embodiment one
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of injection mould core-pulling mechanism, it comprises cover half 1, small slide block 2 and large slide block 3 and (certainly also comprises other parts, but owing to not relating to the inventive point of the invention, therefore do not repeat them here), described large slide block 3 is slidably connected on cover half 1, and small slide block 2 is slidably connected on large slide block 3, large slide block 3 below described small slide block 2 is provided with through hole 4, slidably connects limited block 5 in described through hole 4; Be provided with below described small slide block 2 and can coordinate the first spacing spacing hole 6 with limited block 5 upper end, the degree of depth of general first spacing hole 6 is slightly larger than the height of the second projection 10, and described cover half 1 upper surface is provided with and can coordinates the second spacing spacing hole 7 with limited block 5 lower end; The length of described through hole 4 adds that the degree of depth of the second spacing hole 7 equals the length of limited block 5; During matched moulds, the spacing between the first described spacing hole 6 and the second spacing hole 7 equals the distance (when being namely in matched moulds state, the spacing between small slide block 2 and pressure limited block 8) that small slide block 2 slides for large slide block 3; Described large slide block 3 is provided with the pressure limited block 8 to small slide block 2, the spacing between limited block 8 and small slide block 2 is forced to equal spacing between the first spacing hole 6 and the second spacing hole 7 (i.e. small slide block 2 slide relative to large slide block 3 distance), when small slide block 2 move to be forced limited block 8 restraining position time, first spacing hole 6 is just in time positioned at directly over through hole 4, now continue to pull small slide block 2, small slide block 2 slides together with large slide block 3; The lower end of described limited block 5 is provided with the first projection 9 (this example is isosceles trapezoid, also can be other trapezium structure) that is trapezoidal or arc, and the second described spacing hole 7 shape is identical with the shape of the first projection 9; First projection 9, limited block 5 and second protruding 10 are integral type structure.
The upper end of described limited block 5 is provided with the second projection 10 that is trapezoidal or arc, and the first described spacing hole 6 shape is identical with the shape of the second projection 10.
The shape of the second described projection 10 is identical with the shape of the first projection 9.
Described first protruding 9 is trapezoidal, trapezoidal is isosceles trapezoidal structure, and isosceles trapezoid is minor face away from the limit of limited block 5, the limit that isosceles trapezoid is connected with limited block 5 is long limit, angle in described isosceles trapezoid between hypotenuse and long limit is 5 ~ 55 ° (this example is 45 °, also can be 5 °, 15 °, 30 ° or 55 ° etc.).
Be provided with backing plate 11 between described large slide block 3 and cover half 1, and the second spacing hole 7 is positioned on backing plate 11.
The thickness of described backing plate 11 is greater than the degree of depth of the second spacing hole 7, and described backing plate 11 is provided with laying dust hole 12, and laying dust hole 12 is positioned at immediately below the second spacing hole 7, and laying dust hole 12 is communicated with the second spacing hole 7.
Embodiment two
Described first protruding 9 is arc, and central angle corresponding to arc is less than 90 ° (this example is 30 °, also can be 5 °, 20 °, 45 °, 80 ° or 85 ° etc.).
When mould is in matched moulds state, limited block 5 is arranged in the space of through hole 4 and the second spacing hole 7 composition, when die sinking is loosed core, small slide block 2 first moves right under the effect of oil cylinder until to be forced limited block 8 spacing, now the first spacing hole 6 is just in time positioned at directly over limited block 5, oil cylinder works on, now small slide block 2 moves right together with large slide block 3, and owing to being empty above limited block 5, and under the effect of limited block 5 lower end first protruding 9 and the second spacing hole 7, along with the mobile limited block of continuation 5 of large slide block 3 will be squeezed in the space of through hole 4 and the first spacing hole 6 composition under trapezoidal or arc first protruding 9 and corresponding second spacing hole 7 act on, and now limited block 5 no longer to large slide block 3 and cover half 1 mutually spacing, but to large slide block 3 and small slide block 2 mutually spacing, until large limited namely the completing of slide block 3 is loosed core, during matched moulds, oil cylinder pushing small slide block 2 resets, at the beginning under the effect in the space that limited block 5 forms with through hole 4 and the first spacing hole 6, small slide block 2 moves together with large slide block 3, when small slide block 2 and large slide block 3 move integrally the second spacing hole 7 be positioned at immediately below through hole 4 time, limited cannot continuation is moved to the left large slide block 3, now small slide block 2 is still continuing to be moved to the left until small slide block 2 is limited, then move in the space that through hole 4 and the second spacing hole 7 form at small slide block 2 and the extruding lower position block 5 of large slide block 3 relative movement in the process, at this moment limited block 5 to large slide block 3 and cover half 1 spacing each other.
Above example is only preferred embodiment of the present invention, the present invention is not limited only to above embodiment and has also allowed other structure to change, and allly changes in rights to independence claimed range of the present invention, all belongs to scope.
Claims (8)
1. an injection mould core-pulling mechanism, it comprises cover half (1), small slide block (2) and large slide block (3), described large slide block (3) is slidably connected on cover half (1), small slide block (2) is slidably connected on large slide block (3), it is characterized in that: the large slide block (3) of described small slide block (2) below is provided with through hole (4), slidably connects limited block (5) in described through hole (4); Be provided with below described small slide block (2) and can coordinate spacing the first spacing hole (6) with limited block (5) upper end, described cover half (1) upper surface is provided with and can coordinates spacing the second spacing hole (7) with limited block (5) lower end; The length of described through hole (4) adds that the degree of depth of the second spacing hole (7) equals the length of limited block (5); Spacing between described the first spacing hole (6) and the second spacing hole (7) equals the distance that small slide block (2) slides relative to large slide block (3); Described large slide block (3) is provided with the pressure limited block (8) to small slide block (2), spacing between pressure limited block (8) and small slide block (2) equals the spacing between the first spacing hole (6) and the second spacing hole (7), when small slide block (2) move to be forced limited block (8) restraining position time, first spacing hole (6) is just in time positioned at directly over through hole (4), now continue to pull small slide block (2), small slide block (2) slides together with large slide block (3); The lower end of described limited block (5) is provided with the first projection (9) that is trapezoidal or arc, and described the second spacing hole (7) shape is identical with the shape of the first projection (9).
2. injection mould core-pulling mechanism according to claim 1, it is characterized in that: the upper end of described limited block (5) is provided with the second projection (10) that is trapezoidal or arc, and described the first spacing hole (6) shape is identical with the shape of the second projection (10).
3. injection mould core-pulling mechanism according to claim 2, is characterized in that: the shape of described the second projection (10) is identical with the shape of the first projection (9).
4. injection mould core-pulling mechanism according to claim 1, it is characterized in that: described the first projection (9) is for trapezoidal, trapezoidal is isosceles trapezoidal structure, and isosceles trapezoid is minor face away from the limit of limited block (5), the limit that isosceles trapezoid is connected with limited block (5) is long limit, and the angle in described isosceles trapezoid between hypotenuse and long limit is 5 ~ 55 °.
5. injection mould core-pulling mechanism according to claim 3, is characterized in that: described angle is 45 °.
6. injection mould core-pulling mechanism according to claim 1, is characterized in that: described the first projection (9) is arc, and central angle corresponding to arc is less than 90 °.
7. injection mould core-pulling mechanism according to claim 1, it is characterized in that: be provided with backing plate (11) between described large slide block (3) and cover half (1), and the second spacing hole (7) is positioned on backing plate (11).
8. injection mould core-pulling mechanism according to claim 7, it is characterized in that: the thickness of described backing plate (11) is greater than the degree of depth of the second spacing hole (7), described backing plate (11) is provided with laying dust hole (12), laying dust hole (12) is positioned at immediately below the second spacing hole (7), and laying dust hole (12) are communicated with the second spacing hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510622562.4A CN105172064B (en) | 2015-09-25 | 2015-09-25 | Injection mould core-pulling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510622562.4A CN105172064B (en) | 2015-09-25 | 2015-09-25 | Injection mould core-pulling mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105172064A true CN105172064A (en) | 2015-12-23 |
| CN105172064B CN105172064B (en) | 2017-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510622562.4A Active CN105172064B (en) | 2015-09-25 | 2015-09-25 | Injection mould core-pulling mechanism |
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| Country | Link |
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| CN (1) | CN105172064B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676873A (en) * | 2019-01-18 | 2019-04-26 | 浙江世纪华通车业有限公司 | A kind of secondary slide block lock pin mould structure of water chamber product |
| CN112936765A (en) * | 2021-03-19 | 2021-06-11 | 重庆持恒模具有限公司 | Core pulling mechanism for inward opening handle of vehicle door |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202156009U (en) * | 2011-04-29 | 2012-03-07 | 富港电子（东莞）有限公司 | Secondary core side-drawing mechanism |
| CN103407116A (en) * | 2013-07-25 | 2013-11-27 | 大连华录模塑产业有限公司 | Guide groove side pulling mechanism |
| CN203697401U (en) * | 2013-12-11 | 2014-07-09 | 思柏精密模具注塑（无锡）有限公司 | Precision mold for internal thread component in gear-driven core-pulling form |
-
2015
- 2015-09-25 CN CN201510622562.4A patent/CN105172064B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202156009U (en) * | 2011-04-29 | 2012-03-07 | 富港电子（东莞）有限公司 | Secondary core side-drawing mechanism |
| CN103407116A (en) * | 2013-07-25 | 2013-11-27 | 大连华录模塑产业有限公司 | Guide groove side pulling mechanism |
| CN203697401U (en) * | 2013-12-11 | 2014-07-09 | 思柏精密模具注塑（无锡）有限公司 | Precision mold for internal thread component in gear-driven core-pulling form |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109676873A (en) * | 2019-01-18 | 2019-04-26 | 浙江世纪华通车业有限公司 | A kind of secondary slide block lock pin mould structure of water chamber product |
| CN112936765A (en) * | 2021-03-19 | 2021-06-11 | 重庆持恒模具有限公司 | Core pulling mechanism for inward opening handle of vehicle door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105172064B (en) | 2017-09-12 |
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Address after: 315600 Meilin street, Ningbo City, Ningbo, Zhejiang Province, No. 3 middle road, No. 3 Patentee after: Ningbo Fangzheng automobile mould Limited by Share Ltd Address before: 315600 Zhejiang city of Ningbo province Ninghai County Tashan Industrial Park Qixing Road No. 28 Patentee before: Ningbo Fangzheng Tool Co., Ltd. |