CN217891665U - Injection molding dinner plate mold demoulding structure without ejection demoulding - Google Patents
Injection molding dinner plate mold demoulding structure without ejection demoulding Download PDFInfo
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- CN217891665U CN217891665U CN202220546395.5U CN202220546395U CN217891665U CN 217891665 U CN217891665 U CN 217891665U CN 202220546395 U CN202220546395 U CN 202220546395U CN 217891665 U CN217891665 U CN 217891665U
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- cover half
- boss
- dinner plate
- benevolence
- mould
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Abstract
The utility model provides a dinner plate mould demoulding structure of moulding plastics that need not ejecting drawing of patterns, including cover half and movable mould, install cover half benevolence in the cover half, install movable mould benevolence in the movable mould, the die cavity is constituteed between cover half benevolence and the movable mould benevolence, and the edge that lies in the die cavity in the cover half benevolence is equipped with the boss, and one side of boss is equipped with interior concave part, and interior concave part is used for the strengthening rib of the work piece of moulding plastics, and the back strengthening rib of moulding plastics supports and leans on the conical surface of boss. The utility model relates to a dinner plate mould demoulding structure of moulding plastics that need not ejecting drawing of patterns, boss tapering promptly through the rational design to the dinner plate strengthening rib, height and the reasonable of conical surface roughness select, make the strengthening rib hold tightly with the cover half benevolence when the shaping is shrink, the dinner plate can adsorb on cover half benevolence through the boss during the die sinking, so that the manipulator is got the material, it is ejecting by the ejector pin again after the work piece follow-up mould takes out to compare in original die sinking back, the product that adopts this demoulding structure does not have ejecting vestige, the product is more pleasing to the eye, and the drawing of patterns mode is more convenient, work efficiency is higher.
Description
Technical Field
The utility model relates to a dinner plate injection mold technical field especially relates to an injection molding dinner plate mould demoulding structure that need not ejecting drawing of patterns.
Background
The existing plastic dinner plate is produced by injection molding, and in the existing dinner plate injection mold, demoulding of the dinner plate is realized by ejecting a thimble, so that the trace of the thimble on the surface of a product can be caused to influence the attractiveness of the product; the existing dinner plate injection mold utilizes the holding force of a reinforcing rib at the edge of a product to a front mold, so that the adhesive force of the front mold and a rear mold to the product is balanced when the mold is opened, and the product is demolded; in the injection molding process, molten plastic is injected into a mold cavity for cooling, solidification and molding, and the volume of the molten plastic shrinks when the molten plastic is cooled and solidified, so that a product is separated from a female mold and clasped on a male mold, and is attached to the male mold along with the opening of the mold. In order to take the finished product off from the male die, the existing die needs to design an ejection mechanism to eject the product from the male die for demoulding, and the injection molding efficiency is not high.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The to-be-solved technical problem of the utility model is to provide a dinner plate mould demoulding structure of moulding plastics that need not ejecting drawing of patterns to dinner plate injection mold is moulded plastics inefficiency and is influenced the problem of product surface quality easily among the overcome prior art.
(II) technical scheme
For solving the technical problem, the utility model provides a dinner plate mould demoulding structure moulds plastics that need not ejecting drawing of patterns, including cover half and movable mould, install cover half benevolence in the cover half, install movable mould benevolence in the movable mould, cover half benevolence with the die cavity is constituteed between the movable mould benevolence, lie in the cover half benevolence the edge of die cavity is equipped with the boss, one side of boss is equipped with interior concave part, interior concave part is used for injection moulding's strengthening rib, moulds plastics the back the strengthening rib supports and leans on the conical surface of boss, the strengthening rib will produce the power of hugging closely to the boss conical surface when injection moulding cooling shrink, utilizes this power of hugging closely right the cover half produces slightly to be greater than the power of movable mould adhesive force makes the dinner plate break away from the movable mould and the adhesion is in on the cover half, the manipulator of being convenient for collects the product.
Furthermore, the surface roughness of the conical surface of the boss is larger than that of the cavity, the taper of the boss is the demoulding inclination of the fixed mould, and proper holding force can be obtained by selecting proper boss taper alpha and boss height h, so that the dinner plate can be stably kept in the fixed mould core and is easy to be taken up by a manipulator.
(III) advantageous effects
The utility model relates to a dinner plate mould demoulding structure that moulds plastics that need not ejecting drawing of patterns, injection moulding department through dish strengthening rib in mould benevolence sets up the boss, make the strengthening rib when the shaping shrink hold tightly with the cover half benevolence, the dinner plate can adsorb on cover half benevolence through the boss during the die sinking, so that the manipulator is got the material, it is ejecting by the ejector pin again to compare in behind original die sinking work piece follow-up mould takes out, the product of this mould does not have ejecting vestige, the product is more pleasing to the eye, and the drawing of patterns mode is more convenient, and work efficiency is higher.
Drawings
FIG. 1 is a cross-sectional view of a mold release structure of an injection molding tray mold of the present invention without ejection and mold release;
fig. 2 is an enlarged view of the part a in fig. 1 of the demolding structure of the injection plate mold of the present invention without ejection demolding.
Wherein: 1 is a fixed die, 2 is a movable die, 3 is a fixed die core, 4 is a movable die core, 5 is a cavity, 6 is a boss, 7 is an inner concave part, and 8 is an electric heating nozzle.
Detailed Description
Referring to fig. 1 and 2, in order to solve the above technical problems, the utility model provides an injection molding dinner plate mold demoulding structure without ejection demoulding, including cover half 1 and movable mould 2, install cover half core 3 in this cover half 1, install movable mould core 4 in the movable mould 2, constitute die cavity 5 between cover half core 3 and the movable mould core 4, wherein the edge that lies in die cavity 5 in the cover half core 3 is equipped with boss 6, one side of boss 6 is equipped with interior concave part 7, interior concave part 7 is used for the strengthening rib of injection molding work piece, the strengthening rib supports on the conical surface of boss 6 after the injection molding, the strengthening rib will produce the locking force to the boss conical surface when the injection molding cooling shrink, utilize this locking force to produce the power that slightly is greater than movable mould 2 adhesive force to cover half 1, make the dinner plate break away from movable mould 2 and adhere on cover half 1, be convenient for the manipulator to collect the product; specifically, the depth of the concave part 7 is the same as the height of the reinforcing rib, the surface roughness of the conical surface of the boss 6 is larger than that of the cavity 5, the taper of the boss 6 is alpha, and the height of the boss 6 is h; the larger the height h is, the larger the holding force of the dinner plate on the conical surface of the boss is, namely the larger the adhesion force of the dinner plate and the fixed mold core 3 is, the larger the taper alpha of the boss 6 is, and the smaller the adsorption force of the fixed mold core 3 is. By selecting proper boss surface roughness, proper boss taper and proper boss protrusion height, satisfactory demolding effect can be obtained corresponding to different products. In this embodiment, the diameter of the dish is 260mm, α is 18 degrees, and h is 0.5mm.
The utility model relates to a dinner plate mould demoulding structure of moulding plastics that need not ejecting drawing of patterns, boss tapering promptly through the rational design to the dinner plate strengthening rib, height and the reasonable of conical surface roughness select, make the strengthening rib hold tightly with the cover half benevolence when the shaping is shrink, the dinner plate can adsorb on cover half benevolence through the boss during the die sinking, so that the manipulator is got the material, it is ejecting by the ejector pin again after the work piece follow-up mould takes out to compare in original die sinking back, the product that adopts this demoulding structure does not have ejecting vestige, the product is more pleasing to the eye, and the drawing of patterns mode is more convenient, work efficiency is higher.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The injection molding dinner plate mold demolding structure without ejection demolding comprises a fixed mold (1) and a movable mold (2), wherein a fixed mold core (3) is installed in the fixed mold (1), a movable mold core (4) is installed in the movable mold (2), and a mold cavity (5) is formed between the fixed mold core (3) and the movable mold core (4).
2. The injection molding dinner plate mold stripping structure without ejection and stripping of claim 1, which is characterized in that: the surface roughness of the conical surface of the boss (6) is larger than that of the cavity (5).
3. The injection molding dinner plate mold stripping structure without ejection and stripping of claim 1, which is characterized in that: the taper of the boss (6) is the demoulding inclination of the fixed die (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220546395.5U CN217891665U (en) | 2022-03-14 | 2022-03-14 | Injection molding dinner plate mold demoulding structure without ejection demoulding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220546395.5U CN217891665U (en) | 2022-03-14 | 2022-03-14 | Injection molding dinner plate mold demoulding structure without ejection demoulding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217891665U true CN217891665U (en) | 2022-11-25 |
Family
ID=84106581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220546395.5U Active CN217891665U (en) | 2022-03-14 | 2022-03-14 | Injection molding dinner plate mold demoulding structure without ejection demoulding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217891665U (en) |
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2022
- 2022-03-14 CN CN202220546395.5U patent/CN217891665U/en active Active
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