CN218660211U

CN218660211U - Mould sticking prevention structure for long and thin special-shaped double-color injection molding product

Info

Publication number: CN218660211U
Application number: CN202122798129.XU
Authority: CN
Inventors: 施沫村
Original assignee: Iv Techmould Suzhou Co ltd
Current assignee: Iv Techmould Suzhou Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2023-03-21
Anticipated expiration: 2031-11-16

Abstract

A mold sticking preventing structure for a slender special-shaped double-color injection molding product comprises a male mold side, a female mold side and a double-color product, wherein a plurality of bosses are arranged on the male mold side, and the demolding angle of the female mold side is 5 degrees; the double-color product comprises a plurality of circular convex parts and a plurality of connecting rib parts, the circular convex parts are connected through the connecting rib parts, the bosses form first concave parts on the circular convex parts, and the bosses form second concave parts on the connecting rib parts. Double-colored injection moulding product antiseized mould structure of long and thin dysmorphism, have following advantage: 1. a boss is added on the side of the male die of the product as shown in the figure, so that the tightening force of the side of the male die is increased. 2. The product demoulding angle is changed from 1 degree to 5 degrees, and the side tightening force of the female die is reduced. 3. Rounding treatment is carried out on corners of the product to increase fillets. Through the targeted optimization of the points, the product reaches the optimal state, and the risk that the product is stuck to a female die is greatly reduced.

Description

Mould sticking prevention structure for long and thin special-shaped double-color injection molding product

Technical Field

The utility model belongs to the technical field of advanced production manufacturing and automation, specifically, relate to a double-colored injection moulding product antiseized mould structure of long and thin dysmorphism.

Background

The common mold comprises a male mold and a female mold, wherein the male mold and the female mold both have molded surfaces so as to form a cavity during mold closing, and the female mold is far away from the male mold under the action of tensile force provided by the injection molding machine during mold opening so as to complete mold opening. Double-colored product is compared in monochromatic product, and its color is no longer single, and can realize the combination of two kinds of different materials, consequently receives the favor of producer widely. The manufacturing process of the double-color product mainly comprises the manufacturing of a primary product and the manufacturing of a secondary product, wherein the manufacturing process of the secondary product needs to be formed on the basis of the primary product so as to be combined with the primary product while molding to obtain the double-color product.

In the injection molding process of a two-color product, for an elongated injection molded part, the following problems are often encountered due to the structural characteristics of the product:

1. the product has a single structure, and the male die side has no obvious characteristic for pulling the product.

2. The product demoulding angle is very small, which causes the side edge packing force of the product to be overlarge.

3. The corners of the product are vertical corners.

Due to the reasons, the product is seriously stuck after being filled, and the normal mass production cannot be realized.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a double-colored injection moulding product sticking prevention mould structure of long and thin dysmorphism avoids the package to reinforce and to lead to the injection molding to seriously warp or split when how to make the slender part mould plastics, and influences the technical problem that the product required precision becomes to remain to solve.

The technical scheme is as follows: the utility model provides a double-colored injection moulding product sticking prevention structure of long and thin dysmorphism, including public mould side, master model side and double-colored product, the double-colored product is injection moulding between public mould side and master model side, be equipped with a plurality of bosss on the public mould side, the drawing of patterns angle of master model side is 5 degrees; the double-color product comprises a plurality of circular convex parts and a plurality of connecting rib parts, the circular convex parts are connected through the connecting rib parts, the circular convex parts form first concave parts, and the circular convex parts form second concave parts. The utility model discloses a double-colored injection moulding product antiseized mould structure of long and thin dysmorphism glues the problem of master model in order to improve double-colored product, according to the improvement that the concrete structure of product goes on the product, has improved the yield of product under the circumstances that the product appearance satisfies product operation requirement, and the practicality is stronger, and the performance is more stable, can be used for the design and popularization.

Further, in the above anti-sticking structure for the slender special-shaped double-color injection molded product, the cross section of the first concave part is circular, the depth of the first concave part is 0.8mm, and the diameter of the first concave part is 1.8mm.

Further, according to the anti-sticking structure for the slender special-shaped double-color injection molding product, the section of the second concave part is rectangular, the depth of the second concave part is 0.5mm, and the width of the second concave part is 0.5mm.

Further, in the above mold adhesion preventing structure for the slender special-shaped double-color injection molded product, the second concave portion extends from the end portion close to the first concave portion.

Furthermore, in the anti-sticking structure for the slender special-shaped double-color injection molding product, the corner positions outside the connecting rib parts are all set to be the first round corners.

Further, in the above mould adhesion preventing structure for the slender special-shaped double-color injection molding product, the corner positions inside the second concave part are both provided with the second rounded corner.

Further, according to the anti-sticking structure for the slender special-shaped double-color injection molding product, the second concave parts are independent, and the separating and connecting parts are arranged between the second concave parts.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: double-colored injection moulding product antiseized mould structure of long and thin dysmorphism, simple structure, reasonable, convenient to use, the application is with low costs, adaptability is good to have following advantage:

1. a boss is added on the side of the male die of the product as shown in the figure, so that the tightening force of the side of the male die is increased.

2. The product demoulding angle is changed from 1 degree to 5 degrees, and the side tightening force of the female die is reduced.

3. Rounding the corners of the product to increase the fillets.

Through the targeted optimization of the points, the product reaches the optimal state, and the risk that the product is stuck to a female die is greatly reduced.

Drawings

FIG. 1 is a schematic structural view of a mold sticking preventing structure of a long, thin and special-shaped double-color injection molding product of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic structural diagram of an original structure of a slender special-shaped double-color injection molding product according to the present invention;

FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 4 according to the present invention;

fig. 6 is a cross-sectional view taken along the direction B-B in fig. 4 according to the present invention.

In the figure: the connecting structure comprises a boss 1, a circular convex part 2, a first concave part 21, a connecting rib part 3, a second concave part 31, a transition part 32, a first fillet 33, a second fillet 34 and a separating connecting part 35.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present 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", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

As shown in fig. 4-6, which is the original design of the product, as can be seen from fig. 1, the product is entirely in a right-angled structure, but the product is formed by connecting a plurality of turning points with the elongated rib portions, some of the elongated rib portions are arranged in a zigzag manner, and the sharp corners of the zigzag manner are provided with circular connecting portions, some of the elongated rib portions are arranged in a U-shaped or "convex" manner, and the connecting positions are provided with the circular connecting portions, so that the overall structure is complex and changeable, and the overall length is thin and long, and the probability of sticking the female mold to such a product in the injection molding process is greatly increased, which often causes the product demolding failure, so that the yield of the product is relatively low.

In order to solve the problem that a product is stuck to a female mold, the slender special-shaped double-color injection molding product anti-sticking structure shown in fig. 1-3 comprises a male mold side, a female mold side and a double-color product 100, wherein the double-color product 100 is formed between the male mold side and the female mold side in an injection molding mode, a plurality of bosses 1 are arranged on the male mold side, and the demolding angle of the female mold side is 5 degrees. Increased a plurality of bosss 1 on public mould side, increased the area of contact between public mould side and the double-colored product 100 like this to during a plurality of bosss 1 inwards sunken entering double-colored product 100, increased the packing power between public mould side and the product, be favorable to the die sinking in-process to make double-colored product 100 stay in public mould side, be convenient for follow-up the second of carrying on and penetrated injection moulding.

Wherein, double-colored product 100 includes a plurality of circular convex parts 2 and a plurality of connecting rib portion 3, connect through connecting rib portion 3 between a plurality of circular convex parts 2, a plurality of bosss 1 form depressed part one 21 on a plurality of circular convex parts 2, a plurality of bosss 1 form a plurality of depressed parts two 31 on a plurality of connecting rib portion 3. The structure of the double-color product 100 is complex, including a plurality of turning positions between a plurality of circular convex parts 2 and a plurality of connection rib parts 3, the overall structure of this double-color product 100 is slender and smaller, thereby in the process of injection moulding through a plurality of bosss 1 that set up in the public mould side, form depressed part one 21 and depressed part two 31 on double-color product 100.

The cross section of the first concave part 21 is circular, the depth of the first concave part 21 is 0.8mm, and the diameter of the first concave part 21 is 1.8mm. The cross section of the second concave part 31 is rectangular, the depth of the second concave part 31 is 0.5mm, and the width of the second concave part 31 is 0.5mm. In order to match the size of the double-color product 100 and maintain the strength of the double-color product 100, the sizes of the first concave part 21 and the second concave part 31 need to be designed reasonably, the problem that the injection molded double-color product 100 cannot reach the strength of the product is avoided, the depth or width of the first concave part 21 and the second concave part 31 is too large, and the cracking of the injection molded double-color product is easily caused.

In addition, the second recess 31 extends with a transition portion 32 at the end close to the first recess 21. The second concave parts 31 are independent, and the separating connecting parts 35 are arranged between the second concave parts 31. The second plurality of concave parts 31 are arranged in a multi-section separation mode, so that the strength of the double-color product 100 can be ensured.

In addition, the corner positions outside the connecting rib parts 3 are all provided with a first round angle 33. And the corners inside the second concave part 31 are provided with second round corners 34. Fillet 33 is female mould side shaping, and two 34 fillets are public mould side shaping, and the diameter of two 34 fillets of fillet is far less than the diameter of fillet 33, and the outside corner position department that will connect the great connecting rib portion 3 of length changes into slick and sly fillet setting, can avoid the corner position department cohesive force of right angle type too big, the drawing of patterns of being convenient for.

The method for increasing the number of bosses 1 by glue stealing on the male die side and increasing the die-out angle of the double-color product 100 effectively solves the die sticking problem, so that the original product can be opened without handstand, the die structure is greatly simplified, and the cost is saved.

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 modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a long and thin two-color injection molding product anti-sticking structure of dysmorphism which characterized in that: the double-color product injection molding die comprises a male die side, a female die side and a double-color product (100), wherein the double-color product (100) is injection molded between the male die side and the female die side, a plurality of bosses (1) are arranged on the male die side, and the demolding angle of the female die side is 5 degrees;

wherein, double-colored product (100) includes a plurality of circular convex parts (2) and a plurality of connecting rib portion (3), connect through connecting rib portion (3) between a plurality of circular convex parts (2), a plurality of bosss (1) form depressed part one (21) on a plurality of circular convex parts (2), a plurality of bosss (1) form a plurality of depressed part two (31) on a plurality of connecting rib portion (3).

2. The mold release structure for the elongated shaped two-color injection molding product according to claim 1, wherein: the cross section of the first concave part (21) is circular, the depth of the first concave part (21) is 0.8mm, and the diameter of the first concave part (21) is 1.8mm.

3. The long and thin special-shaped double-color injection molding product anti-sticking structure as claimed in claim 1 or 2, wherein: the cross section of the second concave part (31) is rectangular, the depth of the second concave part (31) is 0.5mm, and the width of the second concave part (31) is 0.5mm.

4. The mold release structure for the elongated shaped two-color injection molding product according to claim 1, wherein: the second concave part (31) is provided with a transition part (32) extending from the end part close to the first concave part (21).

5. The long and thin special-shaped double-color injection molding product anti-sticking structure as claimed in claim 1 or 2, wherein: the corner positions outside the connecting rib parts (3) are all set to be round corners I (33).

6. The mold release structure for the elongated shaped two-color injection molding product according to claim 5, wherein: and the corners inside the second concave part (31) are provided with second round corners (34).

7. The mold release structure for the elongated shaped two-color injection molding product according to claim 1, wherein: the second plurality of concave parts (31) are independent, and a separation connecting part (35) is arranged between the second plurality of concave parts (31).