CN210880663U - Forming structure of cold runner on sliding block - Google Patents
Forming structure of cold runner on sliding block Download PDFInfo
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- CN210880663U CN210880663U CN201921391061.XU CN201921391061U CN210880663U CN 210880663 U CN210880663 U CN 210880663U CN 201921391061 U CN201921391061 U CN 201921391061U CN 210880663 U CN210880663 U CN 210880663U
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- sliding block
- cold runner
- opening
- core
- movable mold
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Abstract
The utility model relates to a cold runner molding structure on slider disposes on moving the module, contains: moving the template; a movable mold core; the core-pulling mechanism comprises a sliding block, wherein a second molding cavity is formed in the sliding block; the ejection mechanism is used for ejecting the workpiece along the demolding direction; the sliding block is provided with a cold runner which extends along the demoulding direction and is communicated with the second forming cavity, the movable mould core is provided with an ejection hole, and the ejection mechanism comprises an ejection part which can sequentially penetrate through the ejection hole and the cold runner after the core pulling mechanism is away from the first forming cavity along the preset direction by a preset distance; the molding structure further comprises a closing mechanism arranged on the movable mold core, and the closing mechanism comprises: a spherical sealing member for closing a first opening at one end of the cold runner away from the second molding cavity; the elastic piece is supported on the movable mold core and elastically presses the spherical sealing piece to seal the first opening; the spherical sealing piece compresses the elastic piece in the process that the sliding block is far away from the movable mold core, so that the movable space is opened for the sliding block to move.
Description
Technical Field
The utility model relates to a mould shaping technical field, concretely relates to shaping structure of cold runner on slider.
Background
With the social progress, the scientific and technological development and the improvement of the living standard, the public demand for daily consumer goods is increasing day by day. As an important component of mass consumer goods, plastic products are rapidly updated under market demands and industry competition, product structures are more and more complex, and higher requirements are provided for plastic mold manufacturing and structural design. In order to meet the production requirements of plastic products with different structures, various targeted mold structures are diversified, the production problem is effectively solved, the market demand is met in a short time, and the material living level of the public is improved.
In the design process of the plastic mold, because some parts are relatively complex in structure, some feed inlets are arranged on a sliding block of the core-pulling mechanism, and the sliding block of the core-pulling mechanism needs to be ejected out in order to reduce deformation in the demolding process. In the prior art, a cold runner extending along the demolding direction is directly arranged on a sliding block, the temperature of glue liquid is high in the molding process, the glue liquid flows into a movable mold core which is arranged behind the cold runner in a matched mode with the sliding block, a sliding gap is reserved between the sliding block and the movable mold core due to the matched requirement, the glue liquid can flow into the space between the sliding block and the movable mold core during molding, and after the molding is carried out for a period of time, the sliding block can be clamped to cause the demolding failure.
SUMMERY OF THE UTILITY MODEL
The utility model discloses based on foretell problem, the purpose provides a cold runner's shaping structure on the slider, and it has a closing mechanism and can replace the movable mould core to seal the cold runner, reaches the purpose that makes the glue solution can not flow in between slider and the movable mould core when the shaping.
The utility model provides a cold runner's shaping structure on the slider disposes on moving the module, contains: moving the template; the movable mold core is fixed on the movable mold plate and is provided with a first molding cavity; the core pulling mechanism comprises a sliding block, wherein a second molding cavity communicated with the first molding cavity is formed in the sliding block; the ejection mechanism is used for ejecting the workpieces formed in the first forming cavity and the second forming cavity along the demolding direction; the sliding block is provided with a cold runner which extends along the demoulding direction and is communicated with the second forming cavity, the movable mould core is provided with an ejection hole, and the ejection mechanism comprises an ejection part which can sequentially penetrate through the ejection hole and the cold runner after the core pulling mechanism is away from the first forming cavity along the preset direction for a preset distance; the molding structure further comprises a closing mechanism disposed on the movable mold core, the closing mechanism comprising: a spherical seal for closing a first opening at an end of the cold runner remote from the second mold cavity; the elastic piece is supported on the movable mould core and elastically presses the spherical sealing piece to enable the spherical sealing piece to close the first opening; the spherical sealing piece compresses the elastic piece in the process that the sliding block is far away from the movable mold core so as to leave a movable space for the sliding block to move.
Preferably, the slider is provided with a guide hole at one end of the first opening, and a circumferential wall of the guide hole can be tangent to the spherical sealing element.
Preferably, a guide rail which is matched with the spherical sealing element in a sliding mode is arranged on the sliding block, and the guide rail is inclined towards the direction far away from the first opening gradually along the direction opposite to the preset direction in the demoulding direction.
Preferably, the closure mechanism comprises: a receiving cavity accommodating the spherical sealing member; the supporting block is arranged on the movable mold core and used for supporting the elastic piece; the receiving cavity is provided with a second opening, and the spherical sealing element part penetrates through the second opening to close the first opening.
Preferably, the receiving cavity has a limiting portion with the second opening, an aperture of the second opening is smaller than an outer diameter of the spherical sealing element, and the limiting portion is adapted to the spherical sealing element.
Preferably, a rolling support member is clamped between the elastic member and the spherical sealing member, and the rolling support member is slidably fitted in the receiving cavity along the demolding direction.
Preferably, the rolling support has an arcuate face adapted to the spherical seal.
By adopting the technical scheme, the utility model discloses can gain following technological effect.
The utility model provides a cold runner is in shaping structure on the slider, dispose closing mechanism on it, closing mechanism has spherical sealing member and elastic component, spherical sealing member can seal the first opening of the cold runner on the slider when the shaping, make the shaping glue solution can not flow between slider and the movable mould core, and can be in the drawing of patterns stage mechanism of loosing core when carrying out the drawing of patterns action, spherical sealing member can the relative slider roll, and can be to keeping away from the orientation activity of keeping away from the slider towards in the drawing of patterns orientation, make it can not interfere going on of the action of loosing core.
Drawings
Fig. 1 shows a schematic structural diagram of a molded structure of a cold runner on a slider.
Fig. 2 and fig. 3 are schematic diagrams of the sectioning structure of the molding structure of the present invention.
Reference symbols of the drawings
The device comprises a 1-movable mold core, a 2-part, a 3-core pulling mechanism, a 31-sliding block, a 311-guide rail, a 4-ejection part, a 5-closing mechanism, a 51-spherical sealing part, a 52-elastic part, a 53-containing cavity, a 531-limiting part, a 54-fixed seat and a 55-supporting block.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "upper end", "lower end", "upper section", "lower section", "upper side", "lower side", "middle", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the mold production field, the movable mold set and the fixed mold set are used for molding the workpiece 2, and the molding structure of the cold runner on the sliding block 31 is configured on the movable mold set. Referring to fig. 1 to 3, the molding structure of the cold runner on the slider 31 of the present application includes a moving die plate (not shown), a moving die core 1, a core pulling mechanism 3, and an ejection mechanism. The movable mold core 1 is fixed on the movable mold plate and is provided with a first molding cavity, the core pulling mechanism 3 comprises a slide block 31, and the slide block 31 is provided with a second molding cavity communicated with the first molding cavity. The ejection mechanism is used for ejecting the product 2 formed in the first forming cavity and the second forming cavity along the demoulding direction.
In this embodiment, a cold runner communicated with the second molding cavity is formed in the slide block 31, the cold runner extends along the demolding direction, a sliding groove is formed in the movable mold core 1, the sliding groove is adapted to the slide block 31, and the slide block 31 is slidably fitted and supported at the bottom of the sliding groove. An ejection hole is formed in the movable mold core 1, and the ejection mechanism comprises an ejection piece 4 which can be an ejector pin and can be supported on an ejector plate on the movable mold unit to realize reciprocating motion along the demolding direction. In the demoulding process, after the core pulling mechanism 3 is away from the first forming cavity along the preset direction for a preset distance, the ejection piece 4 sequentially penetrates through the ejection hole and the cold runner and is ejected on the piece 2 in the cold runner so as to be pushed out of the cold runner, and the demoulding action is completed.
In the present embodiment, the forming structure of the cold runner on the slide 31 further includes a closing mechanism 5, and the closing mechanism 5 is disposed on the movable mold core 1. The closing mechanism 5 comprises a spherical sealing element 51 and an elastic element 52, wherein the end of the cold runner remote from the second mold cavity has a first opening, and the spherical sealing element 51 is used for closing the first opening of the end of the cold runner remote from the second mold cavity. The elastic member 52 serves to elastically support the spherical sealing member 51. The elastic member 52 is in a pre-compressed state so that the spherical sealing member 51 can abut against the end edge of the first opening to close the first opening.
When the core-pulling mechanism 3 is away from the first molding cavity in the preset direction, the spherical seal 51 can roll relative to the slider 31 and can move in the direction away from the second molding cavity in the demolding direction at the same time, so that the movement of the slider 31 is not interfered by the spherical seal 51 and the resistance between the rolling spherical seal 51 and the slider 31 is small.
In an embodiment of the present invention, a guiding hole is disposed on the sliding block 31, the guiding hole is connected to the end edge of the first opening, and has a predetermined included angle with the cold runner, and the predetermined included angle enables the inner peripheral wall of the guiding hole to be tangent to the spherical sealing element 51. The guide hole can guide the spherical seal 51 so that it does not deviate from the axis of the cold runner. Preferably, the point of tangency of the spherical seal 51 with the pilot hole is at the meeting end edge of the pilot hole with the cold runner.
In an embodiment of the present invention, the sliding block 31 is provided with a guide rail 311 slidably engaged with the spherical sealing element 51, and the guide rail 311 is inclined to the direction away from the first opening gradually along the direction opposite to the predetermined direction in the mold releasing direction. The guide rail 311 is used for slowly changing the mutual pressure between the spherical sealing element 51 and the sliding block 31 in the moving process of the sliding block 31, so that the sliding block 31 cannot be blocked due to too large sudden change of the pressure.
In an embodiment of the present invention, the closing mechanism 5 further comprises a storage cavity 53 and a supporting block 55, the storage cavity 53 is opened on the movable mold core 1 for accommodating the spherical sealing element 51, and the elastic element 52 is disposed on the movable mold core 1. The receiving cavity 53 is opened with a second opening through which a portion of the spherical sealing member 51 can pass to close the first opening. The receiving cavity 53 has a limiting portion 531 with a second opening, the caliber of the second opening is smaller than the outer diameter of the spherical sealing element 51, and the limiting portion 531 is adapted to the spherical sealing element 51. The restricting portion 531 can restrict the moving distance of the ball seal 51 in the mold releasing direction so that the ball seal 51 does not come out of the housing chamber 53.
In an embodiment of the present invention, the closing mechanism 5 includes a fixing seat 54, wherein the spherical sealing element 51, the elastic element 52, and the supporting block 55 are all supported on the movable mold core 1 through the fixing seat 54, and the accommodating cavity 53 is disposed on the fixing seat 54. The fixed seat 54 is detachably supported on the movable mold core 1.
In an embodiment of the present invention, a rolling support member is sandwiched between the elastic member 52 and the spherical sealing member 51, and the rolling support member is slidably disposed in the accommodating cavity 53 along the mold releasing direction. The rolling support has an arcuate face that fits into the spherical seal 51. The rolling support is used to increase the smoothness of the ball seal 51 and lubricating oil can be added to the rolling support to increase the smoothness of the ball seal 51.
The utility model discloses an in the embodiment, spherical sealing element 51 and the interior perisporium clearance fit who accomodates chamber 53, for example, this unilateral clearance can be 0.1 ~ 0.3mm for make spherical sealing element 51's position finely tune, make spherical sealing element 51's centre of sphere along drawing of patterns direction and cold runner's axle center can be on a linearity.
In an embodiment of the present invention, the supporting block 55 is supported on the movable mold core 1 through a D-shaped positioning portion, so that it cannot move relative to the movable mold core 1 along the mold releasing direction. It can be understood that the movable mold core 1 is inserted and fixed on the movable mold plate, and the bottom thereof is supported on the movable mold plate, so that the bottom of the supporting block 55 is also on the movable mold plate, thereby fixing the supporting block 55 on the movable mold block.
In an embodiment of the present invention, the ejecting hole is opened on the fixing base 54, so that the moving stroke of the sliding block 31 is not limited, and therefore, it is not necessary to be too large.
The utility model discloses an in the embodiment, set up the spout of dovetail structure on the movable mould board, dispose the sliding part of sliding fit in the spout on slider 31, this sliding part can support the mechanism of loosing core 3 in drawing of patterns direction, makes it can not move in drawing of patterns direction.
The utility model discloses an in the embodiment, the mechanism of loosing core 3 through with the configuration the action of loosing core and reset on the cover half group realization, can understand that, in other embodiments, it can adopt pneumatic cylinder or cylinder to realize the action of loosing core.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A forming structure of a cold runner on a sliding block, which is configured on a movable die set, comprises:
moving the template;
the movable mold core is fixed on the movable mold plate and is provided with a first molding cavity;
the core-pulling mechanism comprises a sliding block, wherein a second molding cavity capable of being communicated with the first molding cavity is formed in the sliding block; and
the ejection mechanism is used for ejecting the workpieces formed in the first forming cavity and the second forming cavity along the demolding direction;
the sliding block is provided with a cold runner which extends along the demoulding direction and is communicated with the second forming cavity, the movable mould core is provided with an ejection hole, and the ejection mechanism comprises an ejection part which can sequentially penetrate through the ejection hole and the cold runner after the core pulling mechanism is away from the first forming cavity along the preset direction for a preset distance;
it is characterized in that the preparation method is characterized in that,
the molding structure further comprises a closing mechanism disposed on the movable mold core, the closing mechanism comprising:
a spherical seal for closing a first opening at an end of the cold runner remote from the second mold cavity; and
the elastic piece is supported on the movable mould core and elastically presses the spherical sealing piece to enable the spherical sealing piece to close the first opening;
the spherical sealing piece compresses the elastic piece in the process that the sliding block is far away from the movable mold core so as to leave a movable space for the sliding block to move.
2. The structure of claim 1, wherein the slider has a guiding hole formed at one end of the first opening, and a circumferential wall of the guiding hole is tangential to the spherical sealing element.
3. The structure of claim 2, wherein the slider has a guide rail slidably engaged with the spherical seal, and the guide rail is inclined in a direction away from the first opening in the demolding direction opposite to the predetermined direction.
4. The cold runner over slide molding structure of claim 1 wherein said closure mechanism comprises:
a receiving cavity accommodating the spherical sealing member; and
the supporting block is arranged on the movable mold core and used for supporting the elastic piece;
the receiving cavity is provided with a second opening, and the spherical sealing element part penetrates through the second opening to close the first opening.
5. The structure for molding a cold runner on a slider as claimed in claim 4, wherein the receiving cavity has a restriction portion opened with the second opening, the aperture of the second opening is smaller than the outer diameter of the spherical seal, and the restriction portion is adapted to the spherical seal.
6. The cold runner molding structure on a slider as claimed in claim 4, wherein a rolling support member is interposed between the elastic member and the spherical sealing member, and the rolling support member is slidably fitted in the receiving cavity along the demolding direction.
7. The cold runner on slide molding structure of claim 6 wherein said rolling support has an arcuate face that fits into said ball seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391061.XU CN210880663U (en) | 2019-08-26 | 2019-08-26 | Forming structure of cold runner on sliding block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391061.XU CN210880663U (en) | 2019-08-26 | 2019-08-26 | Forming structure of cold runner on sliding block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210880663U true CN210880663U (en) | 2020-06-30 |
Family
ID=71326046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921391061.XU Active CN210880663U (en) | 2019-08-26 | 2019-08-26 | Forming structure of cold runner on sliding block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210880663U (en) |
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2019
- 2019-08-26 CN CN201921391061.XU patent/CN210880663U/en active Active
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