CN220031072U - Antiseized mould mechanism and dark chamber injection mold - Google Patents
Antiseized mould mechanism and dark chamber injection mold Download PDFInfo
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- CN220031072U CN220031072U CN202321100019.4U CN202321100019U CN220031072U CN 220031072 U CN220031072 U CN 220031072U CN 202321100019 U CN202321100019 U CN 202321100019U CN 220031072 U CN220031072 U CN 220031072U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 title claims abstract description 25
- 239000007924 injection Substances 0.000 title claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 42
- 230000002265 prevention Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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Abstract
The utility model relates to a mold sticking prevention mechanism and a deep cavity injection mold, which are applied to the technical field of injection molds, and solve the problems that a thimble is easy to rotate in a through hole, so that injection molding of a product is affected and the rejection rate of the product is improved; the lower pressing piece is sleeved on the valve needle and is positioned at the upper end of the return spring, and the lower pressing piece is used for driving the valve needle to move downwards along the axis of the valve body; the valve needle is not easy to rotate, so that the yield and the production quality of the product are improved.
Description
Technical Field
The utility model is applied to the technical field of injection molds, and particularly relates to a mold sticking prevention mechanism.
Background
The prior Chinese patent publication No. CN108274699A announces a deep cavity injection mold easy to demold, comprising a fixed mold, a movable mold, an upper mold core, a lower mold core, a mold cavity, a fixed mold base, a pouring gate sleeve, a glue injection runner, a mold foot, a movable mold seat plate, a top plate and a push rod, wherein an air pin is arranged in the lower mold core, the air pin comprises a body with a through hole at the center, a thimble, a thrust pin and a spring, the through hole consists of a trapezoid hole, a second hole, a third hole and a lower hole, an air guide hole communicated with the trapezoid hole and the third hole is arranged in the body, an air inlet hole is arranged on the inner wall of the third hole, a thrust pin hole is arranged at the lower part of the lower hole, the thrust pin is inserted in the thrust pin hole, the thimble consists of an airtight section, a guide section, a lug shoulder and a spring guide rod, and the spring is sleeved outside the spring guide rod, and the lug shoulder is pushed to the third hole to the lower edge of the third hole.
The above description has the following problems that the air pin is only suitable for blowing and demolding of products with planar surfaces, and when the shape of the products is a curved surface or a special-shaped structure, the ejector pins in the air pin are cylindrical ejector pins which are easy to rotate in the through holes, so that the injection molding of the products is affected, and the rejection rate of the products is improved.
Disclosure of Invention
The utility model aims to provide a die sticking prevention mechanism, which solves the problems that a thimble is easy to rotate in a through hole, so that injection molding of a product is affected and the rejection rate of the product is improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a mold release mechanism comprising:
the valve body is internally provided with an air inlet hole in a penetrating way along the axial direction of the valve body;
the valve needle is arranged in the air inlet in a sliding way, one side of the outer circular surface of the valve needle is arranged in a plane, and the corresponding position of the air inlet and the outer circular surface of the valve needle, which is arranged in the plane, is also arranged in the plane;
the reset spring is sleeved on the middle upper part of the valve needle, and the bottom end of the reset spring is abutted against the step surface of the inner wall of the air inlet hole;
and the lower pressing piece is sleeved on the valve needle and positioned at the upper end of the return spring and is used for driving the valve needle to move downwards along the axis of the valve body.
Further, the casting die is including fixing the fixing bolt of needle up end and cover respectively establish last preforming, lower preforming on the fixing bolt main part, lower preforming cross-section is down T setting, go up the preforming and be located the up end of the vertical portion of preforming down, go up the internal diameter of preforming with the internal diameter of the vertical portion of preforming just is less than the diameter of fixing bolt main part down, the up end of going up the preforming is provided with the heavy groove that admits air along its radial, the lower terminal surface of preforming is provided with the heavy groove that gives vent to anger along its radial down.
Further, a sealing ring is arranged between the upper pressing piece and the lower pressing piece transverse portion.
Further, the valve needle is in an inverted T-shaped arrangement, and a limit step surface matched with the transverse end part of the valve needle is arranged at the bottom of the air inlet hole.
Further, a guide stepped surface is arranged on the outer circular surface of the valve needle vertical part, and a stop pin matched with the guide stepped surface is inserted into the valve body.
Further, an air passage sealing ring is arranged on the upper end face of the air inlet hole.
The utility model also provides a deep cavity injection mold, which comprises the mold sticking prevention mechanism, wherein the air inlet end of the mold sticking prevention mechanism is communicated with the air inlet pipe of the deep cavity injection mold, and the air outlet end of the mold sticking prevention mechanism extends into the cavity of the deep cavity injection mold.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model relates to a mold sticking prevention mechanism, which comprises: the valve body is internally provided with an air inlet hole in a penetrating way along the axial direction of the valve body; the valve needle is arranged in the air inlet in a sliding way, one side of the outer circular surface of the valve needle is arranged in a plane, and the position where the air inlet and the outer circular surface of the valve needle are arranged in the plane is also arranged in the plane; the reset spring is sleeved on the middle upper part of the valve needle, and the bottom end of the reset spring is abutted against the step surface of the inner wall of the air inlet hole; the lower pressing piece is sleeved on the valve needle and is positioned at the upper end of the return spring, and the inner diameter of the lower pressing piece is smaller than the outer diameter of the return spring; the upper pressing piece is arranged on the upper end face of the valve needle and fixed through bolts, and a plurality of through holes are formed in the upper pressing piece along the circumferential direction of the upper pressing piece. The anti-sticking mechanism has the advantages that the structure is simple, the maintenance and the replacement are convenient, the processing and the manufacturing are convenient, and when the product is demolded, the anti-sticking mechanism can provide outward blowing force of gas and outward ejection force of the valve needle, so that the product is convenient to demold; the contact surface of the valve needle and the valve body is increased through the arrangement of the plane, and the valve needle is not easy to rotate in the valve body under the action of the plane, so that when the upper surface of the valve needle is processed to be a curved surface, an inclined surface or a product with a special-shaped structure, the valve needle is not easy to rotate, and the yield and the production quality of the product are improved.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic view of a mold release mechanism in accordance with an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of the construction of the mold release mechanism in an embodiment of the utility model;
FIG. 3 is a schematic structural view of the valve needle in mating relationship with the hold down in an embodiment of the present utility model;
fig. 4 is an enlarged view at a in fig. 2;
fig. 5 is an enlarged view at B in fig. 2;
FIG. 6 is a schematic view of the structure of the hold-down member according to the embodiment of the present utility model;
FIG. 7 is a schematic view of the structure of the valve needle in an embodiment of the present utility model;
FIG. 8 is a structural cross-sectional view of a deep cavity injection mold in accordance with an embodiment of the present utility model;
fig. 9 is an enlarged view at C in fig. 8.
Wherein reference numerals are as follows:
1. a valve body; 2. an air inlet hole; 3. a step surface; 4. a valve needle; 5. a gap; 6. a plane; 7. a return spring; 8. a pressing piece; 81. a fixing bolt; 82. pressing into tablets; 83. tabletting; 9. an air inlet sinking groove; 10. a gas outlet sedimentation tank; 11. a seal ring; 12. limiting the step surface; 13. a guide step surface; 14. a stop pin; 15. an air path sealing ring; 16. an air intake duct; 17. a cavity.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1, 2 and 3, the mold sticking preventing mechanism provided by the utility model is arranged in a deep cavity injection mold, and when the deep cavity injection mold is demolded, the mold sticking preventing mechanism is used for inflating into a cavity 17 in the deep cavity injection mold, so that a molded product is separated from the cavity 17, and the demolding is convenient.
Referring to fig. 2, 4 and 5, in particular, it includes:
the valve body 1 is internally provided with an air inlet hole 2 along the axial direction of the valve body 1 in a penetrating way, and the middle upper part of the inner wall of the air inlet hole 2 is provided with a step surface 3;
the valve needle 4 is arranged in the air inlet hole 2 in a sliding way, a gap 5 is formed between the valve needle 4 and the inner wall of the air inlet hole 2, and when demoulding, air entering the mould sticking prevention mechanism flows in the gap 5 and then flows into a cavity 17 in the deep cavity injection mould, so that demoulding is realized; one side of the outer circular surface of the valve needle 4 is arranged in a plane 6, and the corresponding position of the air inlet hole 2 and the outer circular surface of the valve needle 4 in the plane is also arranged in the plane 6; the contact surface of the valve needle 4 and the valve body 1 is increased through the arrangement of the plane 6, and the valve needle 4 is not easy to rotate in the valve body 1 under the action of the plane 6, so that when a product with a curved surface, an inclined surface or a special-shaped structure is processed on the upper surface, the valve needle 4 is not easy to rotate, thereby improving the yield and the production quality of the product, and the lower end surfaces of the valve body 1 and the valve needle 4 are inclined end surfaces matched with the upper surface of the product.
Referring to fig. 2, 3 and 4, a return spring 7 is sleeved on the middle upper part of the valve needle 4, and the bottom end of the return spring 7 is abutted against the step surface 3 on the inner wall of the air inlet hole 2; the lower pressing piece 8 is sleeved on the valve needle 4 and is positioned at the upper end of the return spring 7, and the lower pressing piece 8 is used for driving the valve needle 4 to move downwards along the axis of the valve body 1. The lower pressing piece 8 comprises a fixing bolt 81 fixed on the upper end face of the valve needle 4, an upper pressing piece 82 and a lower pressing piece 83 which are respectively sleeved on the main body part of the fixing bolt 81, wherein the cross section of the lower pressing piece 83 is in an inverted T-shaped structure, the upper pressing piece 82 is located on the upper end face of the vertical part of the lower pressing piece 83, the inner diameter of the upper pressing piece 82 is identical to the inner diameter of the vertical part of the lower pressing piece 83 and smaller than the diameter of the main body part of the fixing bolt 81, an air inlet sinking groove 9 is formed in the upper end face of the upper pressing piece 82 along the radial direction of the upper pressing piece, and an air outlet sinking groove 10 is formed in the lower end face of the lower pressing piece 83 along the radial direction of the lower pressing piece.
Referring to fig. 1, 2 and 3, the working principle is that the air inlet end of the air inlet hole 2 is inflated firstly, a part of the inflated air flow sequentially passes through the air inlet sinking groove 9, the upper pressing piece 82, the gap between the lower pressing piece 83 and the fixing bolt main body 81 and the air outlet sinking groove 10 to enter the gap 5 between the valve needle 4 and the air inlet hole 2, the air flow flows into the cavity 17 in the deep cavity injection mold through the gap 5, the molded product is separated from the cavity 17 under the action of the air flow, and simultaneously, the inflated part of the air flow applies a downward thrust to the lower pressing piece 8, so that the valve needle 4 is driven to move downwards, the bottom end of the valve needle 4 extends into the cavity 17 in the deep cavity injection mold, and the product is ejected out of the cavity 17.
Referring to fig. 2, 3 and 6, the outer diameter of the upper press sheet 82 is the same as the outer diameter of the lateral part of the lower press sheet 83, and a sealing ring 11 is arranged between the upper press sheet 82 and the lateral part of the lower press sheet 83, so that the sealing property between the upper press sheet 82 and the lower press sheet 83 can be improved by the sealing ring 11, and the air flow filled in during air intake can be ensured to flow from the air inlet end to the air outlet end of the air inlet hole 2.
Referring to fig. 2, 3 and 5, the valve needle 4 is the setting of falling T type, and the bottom of inlet port 2 is provided with the spacing step face 12 of the horizontal tip complex with valve needle 4, carries out spacingly through spacing step face 12 to the valve needle 4 of falling T type, and when the valve needle 4 resets under the effect of return spring 7, carries out spacingly through spacing step face 12 to the valve needle 4 of falling T type, avoids the great valve body 1 that breaks away from of moving distance in the valve needle 4 reset.
Referring to fig. 2 and 7, a guide stepped surface 13 is provided on an outer circumferential surface of a vertical portion of the needle 4, and a stopper pin 14 engaged with the guide stepped surface 13 is inserted into the valve body 4. The stop pin 14 is matched with the guide stepped surface 13 to further limit the valve needle 4, so that the moving precision of the valve needle 4 is improved.
Referring to fig. 1 and 2, the upper end surface of the air inlet hole 2 is provided with an air path sealing ring 15, and when the mold sticking preventing mechanism is installed in the deep cavity injection mold, the tightness between the mold sticking preventing mechanism and the deep cavity injection mold is improved through the air path sealing ring 15, so that the phenomenon of air leakage is prevented.
Referring to fig. 8 and 9, the present utility model further provides a deep cavity injection mold, which includes the mold-sticking preventing mechanism, wherein the air inlet end of the air inlet hole 2 in the mold-sticking preventing mechanism is communicated with the air inlet pipe 16 of the deep cavity injection mold, and the air outlet end of the air inlet hole 2 in the mold-sticking preventing mechanism extends into the cavity 17 of the deep cavity injection mold. When the products with different shapes on the processing surface are processed, only the valve body 1 and the valve needle 4 are needed to be replaced at the moment, so that the cost is greatly reduced, and the anti-sticking mechanism is simple in structure, convenient to maintain and replace and high in plasticity.
To sum up: the anti-sticking mechanism is simple in structure, convenient to maintain and replace, convenient to process and manufacture, and convenient to demold, and can provide outward blowing force of gas and outward ejection force of the valve needle.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (7)
1. A mold release mechanism comprising:
the valve comprises a valve body (1), wherein an air inlet hole (2) is formed in the valve body (1) in a penetrating manner along the axial direction of the valve body;
the valve needle (4) is arranged in the air inlet hole (2) in a sliding manner, one side of the outer circular surface of the valve needle (4) is arranged in a plane (6), and the corresponding position of the air inlet hole (2) and the outer circular surface of the valve needle (4) is also arranged as the plane (6) in the plane (6);
the return spring (7) is sleeved on the middle upper part of the valve needle (4), and the bottom end of the return spring (7) is abutted against the step surface (3) on the inner wall of the air inlet hole (2);
and the lower pressing piece (8) is sleeved on the valve needle (4) and positioned at the upper end of the return spring (7), and is used for driving the valve needle (4) to move downwards along the axis of the valve body (1).
2. The anti-sticking mechanism according to claim 1, wherein the pressing piece (8) comprises a fixing bolt (81) fixed on the upper end face of the valve needle (4) and an upper pressing piece (82) and a lower pressing piece (83) respectively sleeved on the main body part of the fixing bolt (81), the section of the lower pressing piece (83) is in an inverted-T shape, the upper pressing piece (82) is located on the upper end face of the vertical part of the lower pressing piece (83), the inner diameter of the upper pressing piece (82) is identical to the inner diameter of the vertical part of the lower pressing piece (83) and smaller than the diameter of the main body part of the fixing bolt (81), an air inlet sinking groove (9) is formed in the upper end face of the upper pressing piece (82) along the radial direction of the upper pressing piece, and an air outlet sinking groove (10) is formed in the lower end face of the lower pressing piece (83) along the radial direction of the lower pressing piece.
3. The anti-mold mechanism according to claim 2, characterized in that a sealing ring (11) is provided between the upper press piece (82) and the lateral part of the lower press piece (83).
4. A mould release mechanism according to claim 2 or 3, characterised in that the valve pin (4) is arranged in an inverted T-shape, the bottom of the air inlet (2) being provided with a stop stepped surface (12) cooperating with the transverse end of the valve pin (4).
5. The anti-sticking mechanism according to claim 4, wherein a guide stepped surface (13) is provided on an outer circumferential surface of the vertical portion of the valve pin (4), and a stopper pin (14) fitted with the guide stepped surface (13) is inserted into the valve body (1).
6. The anti-sticking mechanism according to claim 5, wherein the upper end face of the air inlet hole (2) is provided with an air passage sealing ring (15).
7. A deep cavity injection mold, characterized by comprising the mold-sticking prevention mechanism as claimed in claims 1-6, wherein the air inlet end of the mold-sticking prevention mechanism is communicated with an air inlet pipeline (16) of the deep cavity injection mold, and the air outlet end of the mold-sticking prevention mechanism extends into a cavity (17) of the deep cavity injection mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321100019.4U CN220031072U (en) | 2023-05-09 | 2023-05-09 | Antiseized mould mechanism and dark chamber injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321100019.4U CN220031072U (en) | 2023-05-09 | 2023-05-09 | Antiseized mould mechanism and dark chamber injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220031072U true CN220031072U (en) | 2023-11-17 |
Family
ID=88728137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321100019.4U Active CN220031072U (en) | 2023-05-09 | 2023-05-09 | Antiseized mould mechanism and dark chamber injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220031072U (en) |
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2023
- 2023-05-09 CN CN202321100019.4U patent/CN220031072U/en active Active
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