CN211492684U - Demoulding structure of injection mould - Google Patents
Demoulding structure of injection mould Download PDFInfo
- Publication number
- CN211492684U CN211492684U CN201921397323.3U CN201921397323U CN211492684U CN 211492684 U CN211492684 U CN 211492684U CN 201921397323 U CN201921397323 U CN 201921397323U CN 211492684 U CN211492684 U CN 211492684U
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- CN
- China
- Prior art keywords
- thimble
- hole
- block
- ejector pin
- ejector
- 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.)
- Expired - Fee Related
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- 238000002347 injection Methods 0.000 title claims abstract description 30
- 239000007924 injection Substances 0.000 title claims abstract description 30
- 230000037431 insertion Effects 0.000 claims 3
- 238000003780 insertion Methods 0.000 claims 3
- 238000001746 injection moulding Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 11
- 238000005520 cutting process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 230000001934 delay Effects 0.000 description 2
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides an injection mold's demoulding structure, including lower mould benevolence, support kicking block and cushion, the upside of lower mould benevolence is equipped with model chamber and limit runner, be equipped with first thimble hole and second thimble hole on the lower mould benevolence, be equipped with third thimble hole and fourth thimble hole on the support kicking block, the cushion chamber is established to the bottom of fourth thimble hole, the bottom of cushion chamber is equipped with the inlaying pinhole that communicates the cushion upside, be equipped with first thimble in the first thimble hole, just first thimble penetrates third thimble hole to its bottom, be equipped with the second thimble in the second thimble hole, just the second thimble penetrates in having the fourth thimble hole, be equipped with the inlaying needle in the inlaying pinhole, and work as at least the cushion upside supports to when supporting the kicking block downside, the upper end of inlaying the needle support lean on to the lower extreme of second thimble. This demoulding structure can cut off mould main part and mouth of a river by oneself at the drawing of patterns in-process, has saved the process of follow-up mouth of a river of cutting, has improved injection moulding production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the injection mold and specifically relates to an injection mold's demoulding structure is related to.
Background
In the injection mold industry, the mold adopting the sprue form of the side sprue is most widely applied, but the main body of the mold is demolded together with the water gap formed at the side sprue during demolding of the mold, and the operation procedure of cutting off the water gap needs to be added after demolding, so that the injection molding procedure is increased, and the injection molding production efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem among the prior art, provide an injection mold's demoulding structure, the drawing of patterns in-process can cut off the mould main part with the mouth of a river by oneself, has saved the process at follow-up mouth of a river of cutting, has improved injection moulding production efficiency.
The utility model adopts the technical scheme as follows:
a demoulding structure of an injection mould comprises a lower mould core, a supporting ejector block and a cushion block, wherein a gap set at intervals between the supporting ejector blocks is arranged below the lower mould core, the cushion block is arranged on the lower side of the supporting ejector block, the upper side of the lower mould core is provided with a mould cavity and an edge sprue, a first ejector pin hole is arranged on the lower mould core corresponding to the position of the mould cavity, a second ejector pin hole is arranged on the lower mould core corresponding to the edge sprue, a third ejector pin hole is arranged on the supporting ejector block corresponding to the first ejector pin hole, a fourth ejector pin hole is arranged on the supporting ejector block corresponding to the second ejector pin hole, a buffer cavity is arranged at the bottom of the fourth ejector pin hole, an insert pin hole communicated with the upper side of the cushion block is arranged at the bottom of the buffer cavity, a first ejector pin is arranged in the first ejector pin hole, the first ejector pin penetrates into the third ejector pin hole to the bottom of the first ejector pin hole, and the second thimble penetrates into a fourth thimble hole, an insert needle is arranged in the insert needle hole, and at least when the upper side of the cushion block abuts against the lower side of the supporting ejector block, the upper end of the insert needle abuts against the lower end of the second thimble.
Further, the diameter of the buffer cavity is larger than that of the pin inserting hole, a first enlarged part is arranged at the upper end of the inserting pin, and the diameter of the first enlarged part is larger than that of the pin inserting hole and smaller than or equal to that of the buffer cavity.
Further, a second enlarged portion is arranged at the lower end of the second thimble hole and is arranged at the upper end of the buffer cavity, and the diameter of the second enlarged portion is larger than that of the fourth thimble hole and smaller than or equal to that of the buffer cavity.
Furthermore, the height of the buffer cavity is equal to the height of the first enlarged part + the height of the second enlarged part + a, wherein a is set to be more than or equal to 5 mm.
Further, the support kicking block includes upper support kicking block and the lower support kicking block of overlapping from top to bottom and establishing, the third thimble hole extends to the upside of lower support kicking block, just the lower extreme of third thimble hole is equipped with the increase chamber, the lower extreme of first thimble is equipped with the third increase portion, the third increase portion is located the increase intracavity.
Furthermore, an inverted well-shaped cavity is formed in the position, corresponding to the second thimble hole, of the side sprue.
The utility model has the advantages that:
the utility model relates to a demoulding structure of an injection mould, when in injection moulding, the cushion block is abutted against the lower end of the supporting ejector block, so that the upper end of the insert pin is abutted against the lower end of the second ejector pin, when the injection molding is finished and the demolding is carried out, the cushion block is moved downwards for a certain distance to enable the insert pin to fall down, so that the second ejector pin can also fall down along with the insert pin, then the supporting ejector block is moved upwards to carry out demoulding, so that when the first ejector pin starts to follow the injection mould in the mould cavity of the supporting ejector block, the second ejector pin delays for a certain distance to be pushed to the lower part of the water gap formed in the side pouring gate, namely, the second thimble obtains a certain buffer distance when demoulding, so that the injection mould is firstly jacked up, therefore, in the process that the injection mold is jacked up but the water gap is not jacked up, the water gap and the injection mold are cut off, and two single bodies which are separated from the water gap and the injection mold are obtained after complete demolding. Therefore, the demoulding structure can automatically cut off the mould main body and the water gap in the demoulding process, thereby saving the subsequent water gap cutting process and improving the injection moulding production efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, there is shown in the drawings,
FIG. 1: the embodiment of the utility model provides a section view of a demoulding structure of an injection mould in an injection moulding state;
FIG. 2: in the embodiment of the utility model, the A part of figure 1 is enlarged;
FIG. 3: in the embodiment of the utility model, the B part of figure 1 is enlarged;
FIG. 4: the embodiment of the utility model provides a section view of a demoulding structure of an injection mould in a pre-demoulding state;
FIG. 5: the embodiment of the utility model provides an enlarged view of C of figure 4;
FIG. 6: in the embodiment of the utility model, the enlarged view of the part D of figure 4 is shown;
FIG. 7: the embodiment of the utility model provides a section view of a demoulding structure of an injection mould in a demoulding state;
FIG. 8: in the embodiment of the present invention, the enlarged view of the part E of fig. 7;
FIG. 9: the embodiment of the utility model provides an enlarged view of F of figure 7.
Names and designations of parts
1. A lower die core; 3. cushion blocks; 4. a first thimble; 5. a second thimble; 6. inserting a needle; 7. a buffer chamber; 11. a mold cavity; 12. edge gating; 21. an upper supporting top block; 22. a lower supporting top block; 41. a third increasing section; 51. a second increasing section; 61. a first increasing section; 101. a first thimble hole; 102. a second thimble hole; 103. a third thimble hole; 104. a fourth thimble hole; 105. Enlarging the cavity; 121. the well-shaped cavity is reversed.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Referring to fig. 1-9, an embodiment of the present invention discloses a demolding structure of an injection mold, comprising a lower mold core, a supporting top block and a cushion block, wherein a gap set at an interval between the supporting top blocks is arranged below the lower mold core, the cushion block is arranged at the lower side of the supporting top block, a mold cavity and a side gate are arranged at the upper side of the lower mold core, a first thimble hole is arranged at a position on the lower mold core corresponding to the mold cavity, a second thimble hole is arranged at a position on the lower mold core corresponding to the side gate, a third thimble hole is arranged at the supporting top block corresponding to the first thimble hole, a fourth thimble hole is arranged at the supporting top block corresponding to the second thimble hole, a buffer cavity is arranged at the bottom of the fourth thimble hole, an insert hole communicated with the cushion block is arranged at the bottom of the buffer cavity, a first thimble is arranged in the first thimble hole, and the first thimble penetrates into the third thimble hole to the bottom of the fourth thimble hole, the second thimble is arranged in the second thimble hole, the second thimble penetrates into the fourth thimble hole, an insert needle is arranged in the insert needle hole, and at least, the upper end of the insert needle is abutted to the lower end of the second thimble when the cushion block is abutted to the lower side of the supporting ejector block.
Further, the diameter of the buffer cavity is larger than that of the pin inserting hole, a first enlarged part is arranged at the upper end of the inserting pin, and the diameter of the first enlarged part is larger than that of the pin inserting hole and smaller than or equal to that of the buffer cavity.
Further, a second enlarged portion is arranged at the lower end of the second thimble hole and is arranged at the upper end of the buffer cavity, and the diameter of the second enlarged portion is larger than that of the fourth thimble hole and smaller than or equal to that of the buffer cavity.
Furthermore, the height of the buffer cavity is equal to the height of the first enlarged part + the height of the second enlarged part + a, wherein a is set to be more than or equal to 5 mm.
Further, the support kicking block includes upper support kicking block and the lower support kicking block of overlapping from top to bottom and establishing, the third thimble hole extends to the upside of lower support kicking block, just the lower extreme of third thimble hole is equipped with the increase chamber, the lower extreme of first thimble is equipped with the third increase portion, the third increase portion is located the increase intracavity.
Furthermore, an inverted well-shaped cavity is formed in the position, corresponding to the second thimble hole, of the side sprue. The well-buckled shaped cavity can increase the thickness of the water gap formed in the side gate, so that the water gap is not broken in the demolding and ejecting process.
To sum up, the utility model relates to a demoulding structure of injection mould, when injection moulding, the cushion block is abutted to the lower end of the supporting top block, so that the upper end of the insert pin is abutted to the lower end of the second thimble, when the injection moulding is completed, the cushion block is moved downwards for a certain distance to make the insert pin fall down, so that the second thimble falls down along with the second thimble, then the supporting top block is moved upwards to demould, so that when the first thimble starts to follow the injection mould in the supporting top block top mould cavity, the second thimble delays a certain distance to be abutted to the lower part of the water gap formed in the side sprue, even if the second thimble obtains a certain buffer distance when demoulding, so that the injection mould is jacked firstly, thereby the water gap and the injection mould are cut off in the process that the injection mould is jacked and the water gap is not jacked, thus obtaining two single bodies of the water gap and the injection mould after complete demoulding. Therefore, the demoulding structure can automatically cut off the mould main body and the water gap in the demoulding process, thereby saving the subsequent water gap cutting process and improving the injection moulding production efficiency.
As long as the idea created by the present invention is not violated, various different embodiments of the present invention can be arbitrarily combined, and all the embodiments should be regarded as the content disclosed by the present invention; the utility model discloses an in the technical conception scope, carry out multiple simple variant and different embodiments to technical scheme and go on not violating the utility model discloses the arbitrary combination of the thought of creation all should be within the protection scope.
Claims (6)
1. A demoulding structure of an injection mould is characterized by comprising a lower mould core, a supporting ejector block and a cushion block, wherein a gap set at intervals by the supporting ejector block is arranged below the lower mould core, the cushion block is arranged on the lower side of the supporting ejector block, a mould cavity and a side sprue are arranged on the upper side of the lower mould core, a first ejector pin hole is arranged on the lower mould core corresponding to the position of the mould cavity, a second ejector pin hole is arranged on the lower mould core corresponding to the side sprue, a third ejector pin hole is arranged on the supporting ejector block corresponding to the first ejector pin hole, a fourth ejector pin hole is arranged on the supporting ejector block corresponding to the second ejector pin hole, a buffer cavity is arranged at the bottom of the fourth ejector pin hole, an embedding pin hole communicated with the upper side of the cushion block is arranged at the bottom of the buffer cavity, a first ejector pin is arranged in the first ejector pin hole, the first ejector pin penetrates into the third ejector pin hole to the bottom of the first ejector pin hole, a, and the second thimble penetrates into a fourth thimble hole, an insert needle is arranged in the insert needle hole, and at least when the upper side of the cushion block abuts against the lower side of the supporting ejector block, the upper end of the insert needle abuts against the lower end of the second thimble.
2. The demolding structure of an injection mold as claimed in claim 1, wherein the diameter of the buffer cavity is larger than that of the pin insertion hole, a first enlarged portion is arranged at the upper end of the pin insertion hole, and the diameter of the first enlarged portion is larger than that of the pin insertion hole and smaller than or equal to that of the buffer cavity.
3. The demolding structure of an injection mold as claimed in claim 2, wherein a second enlarged portion is arranged at the lower end of the second thimble hole and at the upper end of the buffer cavity, and the diameter of the second enlarged portion is larger than the diameter of the fourth thimble hole and smaller than or equal to the diameter of the buffer cavity.
4. The demolding structure of an injection mold according to claim 3, wherein the height of the buffer cavity is equal to the height of the first enlarged portion + the height of the second enlarged portion + a, wherein a is equal to or greater than 5 mm.
5. The demolding structure of an injection mold according to claim 1, wherein the supporting top block comprises an upper supporting top block and a lower supporting top block which are stacked up and down, the third thimble hole extends to the upper side of the lower supporting top block, an enlarged cavity is formed at the lower end of the third thimble hole, a third enlarged portion is formed at the lower end of the first thimble, and the third enlarged portion is formed in the enlarged cavity.
6. The demolding structure of an injection mold as claimed in claim 1, wherein the side gate is provided with an inverted well-shaped cavity at a position corresponding to the second thimble hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397323.3U CN211492684U (en) | 2019-08-26 | 2019-08-26 | Demoulding structure of injection mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397323.3U CN211492684U (en) | 2019-08-26 | 2019-08-26 | Demoulding structure of injection mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211492684U true CN211492684U (en) | 2020-09-15 |
Family
ID=72394816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921397323.3U Expired - Fee Related CN211492684U (en) | 2019-08-26 | 2019-08-26 | Demoulding structure of injection mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211492684U (en) |
-
2019
- 2019-08-26 CN CN201921397323.3U patent/CN211492684U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |