CN215242628U - Demoulding auxiliary mechanism for injection molding products of moulds - Google Patents

Abstract

The utility model relates to the technical field of mold injection, and discloses a mold release auxiliary mechanism for a mold injection product, which comprises an inclined top part and a straight top part; the inclined top component comprises an inclined support body and a top block connected to one end of the inclined support body, and a groove is formed in one end, close to the top block, of the inclined support body; the top block closes the groove; the side surface of the top block is provided with a lug for forming a key hole on the side surface of the injection molding product; one end of the top block, which is far away from the inclined support body, is used for contacting with the front surface of the injection molding product; the straight top part is embedded in the groove. The utility model discloses technical scheme can avoid the comparatively weak gluey position of product key position hole outer end department to be shifted to can protect the product structure.

Description

Demoulding auxiliary mechanism for injection molding products of moulds

Technical Field

The utility model relates to a mould injection technology field especially relates to a mould injection product drawing of patterns complementary unit.

Background

The mold injection molding is a mature molding technology in the manufacturing industry and is widely applied to industries of mobile phone electronic products, automobiles, household appliances and the like.

In the process of injection molding production of a product, the structures of the components of the mold need to be designed according to the shape of the product, so that a cavity corresponding to the shape of the product is formed when the mold is closed. The molten plastic is injected into the cavity of the mold from the water gap of the mold, and the product is formed after cooling and solidification.

Demolding is a process of removing a product from a mold. In the demolding process, some auxiliary mechanisms, such as an ejection mechanism, are needed to ensure that the product is smoothly demolded from the mold, and the structural integrity is ensured.

The inventor of the present application finds in research that the existing ejection mechanism generally adopts a structure of a slanted top in order to smoothly eject the product, however, the plastic injection molded product generally has some key holes (for example, a sound volume key hole, a silent mode adjustment key hole, a battery cover key hole, etc. are arranged on a mobile phone shell), and when the product is subjected to an acting force of the slanted top, the product can drive a beam glue position at the outer end of the key hole to move integrally, thereby causing the product structure to be damaged.

Thus, there is a need for improvements in the prior art.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a demolding auxiliary mechanism for a mold injection product, which can prevent the displacement of the weak glue position at the outer end of the product key hole during demolding of the product, thereby protecting the product structure.

In order to solve the technical problem, the utility model provides a demoulding auxiliary mechanism for a mould injection product, which comprises an inclined top part and a straight top part;

the inclined top component comprises an inclined support body and a top block connected to one end of the inclined support body, and a groove is formed in one end, close to the top block, of the inclined support body; the top block closes the groove;

the side surface of the top block is provided with a lug for forming a key hole on the side surface of the injection molding product; one end of the top block, which is far away from the inclined support body, is used for contacting with the front surface of the injection molding product;

the straight top part is embedded in the groove.

Optionally, one end of the straight top part, which is far away from the bottom of the groove, is provided with a unfilled corner structure at the outer edge, and the unfilled corner structure is used for contacting with a connecting beam at the outer end of the key hole on the side surface of the injection molding product and limiting the connecting beam to move away.

Optionally, the unfilled corner structure is a 90 ° unfilled corner structure, and includes a first end face parallel to the front of the injection molding product, and a second end face perpendicular to the front of the injection molding product.

Optionally, the area of the second end surface is larger than the area of the first end surface.

Optionally, the ejection direction of the inclined top part is an inclined direction along the inclined support body relative to the front surface of the injection molding product; the ejection direction of the straight ejection component is perpendicular to the front face of the product.

Optionally, an included angle is formed between the ejection direction of the inclined ejection part and the ejection direction of the straight ejection part, and the included angle is 3-10 degrees.

Optionally, one end of the straight top part close to the bottom of the groove is in contact with the bottom of the groove.

Optionally, the area of the bottom of the groove is smaller than the area of one end of the straight top part close to the bottom of the groove.

Optionally, one end of the straight top part, which is far away from the bottom of the groove, is in contact with the top block.

Optionally, the mobile terminal further comprises a row bit, and a moving direction of the row bit is perpendicular to the side face.

The utility model discloses technical scheme's beneficial effect includes:

the embodiment of the utility model provides a mould injection moulding product drawing of patterns complementary unit, including pushing up the part to one side and directly pushing up the part, pushing up the part to one side and including the inclined support body and kicking block, having seted up the recess in the inclined support body, directly pushing up the part embedding recess, having more key hole like this at the product, when needing to set up a plurality of oblique top parts and directly pushing up the part, the space has just been saved to the structure of adoption nested formula. Further, the embodiment of the utility model provides an in, the kicking block of pushing up the part to one side is used for pushing up injection moulding product's front, and the one end top surface that recess bottom was kept away from to straight top part is equipped with unfilled corner structure at the outer fringe, and this unfilled corner structure contacts with the connection crossbeam of injection moulding product side key position hole outer end to can restrict walking of connecting the crossbeam when pushing up the part to one side, straight top part, avoid taking place pulling of product structure and hinder.

Drawings

Fig. 1 is a schematic structural diagram of an injection molding product according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of an auxiliary mold release mechanism for an injection molded product according to an embodiment of the present invention;

fig. 3 is an enlarged schematic view of a unfilled corner structure according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an auxiliary mold release mechanism for an injection molded product according to an embodiment of the present invention;

FIG. 5 is a schematic view of the relative structural relationship between the mold-releasing auxiliary structure of the injection-molded product and the injection-molded product according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a surface a-a of the mold injection product auxiliary mold release structure in the example of fig. 5 according to the present invention in a mold release state.

Fig. 7 is a schematic structural diagram of a row bit according to an embodiment of the present invention.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. 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.

It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is 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 at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that, unless otherwise specified, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that three relationships may exist, e.g., A and/or B. Can represent that: a exists alone, A and B exist simultaneously, and B exists alone.

It will also be understood that when an element is referred to as being "fixed" or "disposed" or "connected" to another element, it can be directly or indirectly secured to the other element. The terms "upper", "lower", "outer", "distal", "away", "front", "rear", "left", "right", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are merely for convenience of description and should not be construed as limiting the technical solution.

Before describing embodiments of the present invention, it is necessary to describe some of the techniques of the mold injection industry. In general, a mold is a device composed of a plurality of parts, and in a mold clamping state of the mold, a cavity having a product shape can be formed by some parts, for example, a middle gap between an upper mold and a lower mold. The plastic in the liquid state of the thermalization can enter the cavity from the water gap, and an injection product is formed after the plastic is cooled to a certain degree. In the cycle of injection molding, the injection molded product is finally taken out in the mold opening process. The mechanism which finishes the taking-out action is the demoulding auxiliary mechanism. In general, the demolding auxiliary mechanism includes a slant top, a straight top, a slide, a thimble seat, and the like. The ejector pin is arranged in the ejector pin seat and can be ejected out of the ejector pin seat. The ejecting one end of thimble is connected to push up and is pushed up and directly to can drive and push up to push up or directly to hit a product face of injection moulding product (for the convenience of description in the embodiment of the utility model discloses, define this face as the front, corresponding, with the face perpendicular to the front in injection moulding product definition side). The lifter is an ejection part which is in embedding relation with the injection molding product, and when the lifter obliquely pushes against the front surface of the injection molding product, the embedded part of the lifter and the side surface of the injection molding product can be separated from the product. While straight tops generally have no embedded relationship with injection molded products. The slide, also called slide, belongs to the demoulding auxiliary mechanism, and generally, the slide is an auxiliary mechanism arranged on the periphery of the product structure when the product structure and the demoulding direction are reversed.

The embodiments provided by the present invention are thus further described.

The utility model discloses an in the following embodiment, provide a supplementary demoulding mechanism of mould injection moulding product.

The mold injection product demolding auxiliary mechanism is applied to the demolding process of injection products. The product referred to herein may be a terminal housing of an electronic product, such as but not limited to a mobile phone housing. Generally, the housings of these products have key holes, such as volume key holes, silent mode key holes, and the like. The utility model provides a mould injection moulding product drawing of patterns complementary unit can protect the gluey position that these key position hole department outer ends are weak, prevents that it from producing deformation at the drawing of patterns in-process.

The injection molded product in this embodiment will be described with reference to FIG. 1. Fig. 1 is a typical product according to an embodiment of the present invention, specifically, a mobile phone housing, and the mobile phone housing is a rear housing of a mobile phone. The housing has a front face 31, with camera holes etc. in the front face 31. The handset housing has multiple sides such as a top side 35, a bottom side 36 and left and right sides 32 of the handset housing, generally with the sides (or cut sides) perpendicular to the front 31. There may be one or more key holes on each side, although some sides may not have key holes during design. Illustratively, as shown, the area of the front face 31 is much larger than the area of the other side faces, and there are key holes 33 on the right side face 32. The outer ends of the key holes 33 have connecting beams 34.

In general, it is easy to understand that in the prior art, when the injection molded product is demolded, the product needs to be ejected by an auxiliary mechanism, usually, a slanted top is required to be arranged at the key holes, for example, a slanted top is arranged at the key holes 33, so that the slanted top hits the front surface 31 in an inclined direction, since a part of the structure (the projection 122) of the slanted top is embedded in the key holes 33, when the embedded structure is separated from the key holes 33 (separated along a direction perpendicular to the side surfaces of the key holes 33), the connecting beam 34 is driven to displace, and when the glue position is still in a weak state, the product structure is easily damaged.

Referring to fig. 2, in an embodiment of the present invention, an auxiliary demolding mechanism for a mold injection product is provided, which includes a slanted top member 1 and a straight top member 2;

the inclined top component 1 comprises an inclined support body 11 and a top block 12 connected to one end of the inclined support body 11; one end of the inclined support body 11 close to the top block 12 is provided with a groove 110; the top block 12 closes the recess 110.

The top block 12 has a projection 122 on the side for forming a key hole on the side of the injection-molded product; an end of the top block 12 remote from the inclined support 11 is configured to contact a front surface of the injection molded product.

The straight top member 2 is fitted into the groove 110.

In the prior art, in order to eject an injection molding product, an inclined top and a straight top are generally required to be respectively arranged. Generally, in some key holes, there are oblique tops to separate the oblique tops from the key holes during ejection, and straight tops set independently in the positions other than the key holes to knock against the product. In the embodiment, the straight top part 2 is embedded into the inclined top part 1, so that the limited space under the panel of the injection molding product can be saved.

Further, in a preferred embodiment of the present invention, there is provided an auxiliary demolding mechanism for a mold injection product, comprising an inclined top part 1 and a straight top part 2;

the inclined top component 1 comprises an inclined support body 11 and a top block 12 connected to one end of the inclined support body 11; one end of the inclined support body 11 close to the top block 12 is provided with a groove 110; the top block 12 closes the groove 110 from the open end of the groove 110.

The top block 12 has a projection 122 on the side for forming a key hole on the side of the injection-molded product; the end of the top block 12 remote from the inclined support 11 is intended to come into contact with the front face 31 of the injection-molded product.

The straight top part 2 is embedded into the groove 110, and one end of the straight top part 2, which is far away from the bottom of the groove 110, is provided with a unfilled corner structure 210 at the outer edge, wherein the unfilled corner structure 210 is used for contacting with the connecting cross beam 34 at the outer end of the side key hole 33 of the injection molding product and limiting the connecting cross beam 34 to move.

Fig. 3 is an enlarged schematic view of the unfilled corner structure 210. The unfilled corner structure 210 is a 90 ° unfilled corner structure, and comprises a first end surface (no serial number in the figure due to the view angle relationship) parallel to the front surface of the injection molded product, and a second end surface 2101 perpendicular to the front surface 31 of the injection molded product. During the injection molding process of the product, the key holes 33 are formed by the lugs 122 on the pitched roof part 1, and the connecting beams 34 at the outer ends of the formed key holes 33 are contacted with the unfilled corner structures 210. In this embodiment, the area of the second end surface 2101 is larger than that of the first end surface, and the limiting effect of the unfilled corner structure 210 is mainly to limit the connecting beam 34 from moving in a direction perpendicular to the side surface 32 of the product.

Fig. 4 is a schematic view of the combination of the slant top member and the straight top member. FIG. 5 is a schematic diagram of the mold release assisting mechanism of an injection molded product in relation to the injection molded product. In this embodiment, the end 22 of the straight top member 2 near the bottom of the groove 110 is in contact with the bottom of the groove 110. The area of the bottom of the groove 110 is smaller than the area of the end of the straight top member 2 near the bottom of the groove 110. The end of the straight top member 2 away from the bottom of the groove 110 is in contact with the top block 12 (i.e., the straight top member 2 abuts against one end surface 121 of the top block 12). During demoulding, the straight top part 2 and the inclined top part 1 move for the same distance in a direction perpendicular to the front surface 31 of the injection product in a unit time, namely, the straight top part 2 and the inclined top part 1 are not separated until the demoulding action is finished, so that when the product taking-out action is finished, all parts of the injection product auxiliary mechanism of the mould can be returned to the initial positions for recycling.

Fig. 6 is a cross-sectional view a-a of the example of fig. 5 in a demolded state.

In the embodiment of fig. 6, taking the injection molded product in this embodiment as an example of a mobile phone case, one surface of the top block of the slanted ejecting part 1 is attached to the front surface 31 of the product, where the attachment means that the shape of the top surface of the top block is adapted to the shape of the product. The side of the top block has projections 122 which fit into key holes 33 in the side 32 of the injection molded product. The straight top member 2 is fitted into the groove 110 of the slant top member 1. The top surface edge of the straight top member 2 has a missing corner structure 210 adapted to the connecting beams 34 at the outer ends of the key holes 33.

In this embodiment, the ejection direction of the slanted ejecting member 1 is along the slanted direction (i.e. the direction a in the drawing) of the slanted supporting body 11 corresponding to the front surface 31 of the injection molding product; the ejection direction of the straight top member 2 is a direction (b direction) perpendicular to the product front surface 31. An included angle is formed between the ejection direction of the inclined ejection component 1 and the ejection direction of the straight ejection component 2, the included angle can be 3-10 degrees, and the straight ejection component 2 and the inclined ejection component 1 can be guaranteed to be in a non-separated state after moving for a certain distance in the included angle range. Preferably, in the present embodiment, the included angle is particularly preferably 6 °.

It can be understood that, in fig. 6, the slanted ejecting part 1 is ejected at an angle of 6 ° inclined to the direction of the product side 32 (or the direction of the cut side of the product), the protrusion 122 inserted into the key hole 33 can be pulled out, while the straight ejecting part 2 is ejected against the product front 31 in the direction parallel to the product side 32, and the edge of the top has a corner lacking structure 210 for limiting the position of the connecting beam 34 at the outer end of the key hole 33 (i.e. the corner lacking structure 210 can drive the connecting beam 34 to move in the direction parallel to the product side 32, but forbids the movement perpendicular to the product side 32), thereby protecting the structure of the connecting beam 34 at the outer end of the key hole 33.

In fig. 6, the mold injection product demolding auxiliary mechanism further includes a row 4. The function of the row 4 is to cooperate with the pitched roof element 1. In the mold closing state of the mold, the slide 4 is matched with the inclined top part 1 and is used for forming key holes of a product. Specifically, the top block 12 on the pitched roof part 1 is provided with a convex block 122, the row 4 is provided with a convex strip 401 which is used for being correspondingly matched with the convex block 122, and after the key holes are formed, the convex block 122 on the pitched roof part 1 and the convex strip 401 on the row 4 are embedded into the key holes. In the mold-release state, the direction of movement of row 4 is opposite to the direction of movement of bumps 122. In fig. 6, the moving direction of the row 4 is perpendicular to the side surface 32 of the product where the key holes 33 are located (c direction), so that it can be seen that the row 4 is a mechanism which is arranged on one side of the product and has an embedded inverted structure on the side surface structure of the product, and the product can be smoothly demoulded when the row 4 moves.

The embodiment of the utility model provides a mould injection moulding product drawing of patterns complementary unit, including pushing up the part to one side and directly pushing up the part, pushing up the part to one side and including the inclined support body and kicking block, having seted up the recess in the inclined support body, directly pushing up the part embedding recess, having more key hole like this at the product, when needing to set up a plurality of ejecting parts, the space has just been saved to the structure of adoption nested formula. Further, the embodiment of the utility model provides an in, the kicking block of pushing up the part to one side is used for pushing up injection moulding product's front, and the one end top surface that recess bottom was kept away from to straight top part is equipped with unfilled corner structure at the outer fringe, and this unfilled corner structure contacts with the connection crossbeam of injection moulding product side key position hole outer end to can restrict walking of connecting the crossbeam when pushing up the part to one side, straight top part, avoid taking place pulling of product structure and hinder.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.

Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote names, but not any particular order.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A demoulding auxiliary mechanism for a mould injection product is characterized by comprising an inclined top part and a straight top part;

the inclined top component comprises an inclined support body and a top block connected to one end of the inclined support body, and a groove is formed in one end, close to the top block, of the inclined support body; the top block closes the groove;

the side surface of the top block is provided with a lug for forming a key hole on the side surface of the injection molding product; one end of the top block, which is far away from the inclined support body, is used for contacting with the front surface of the injection molding product;

the straight top part is embedded in the groove.

2. The mold injection product demolding assisting mechanism as claimed in claim 1, wherein an end of the straight top part, which is far away from the bottom of the groove, is provided with a unfilled corner structure at an outer edge, and the unfilled corner structure is used for contacting with a connecting beam at an outer end of a key hole on a side surface of the injection product and limiting the connecting beam to move.

3. The mold injection product mold release assist mechanism of claim 2, wherein the unfilled corner structure is a 90 ° unfilled corner structure comprising a first end surface parallel to the front surface of the injection product and a second end surface perpendicular to the front surface of the injection product.

4. The mold injection product demolding-assisting mechanism of claim 3, wherein an area of the second end face is larger than an area of the first end face.

5. The mold injection product mold release assist mechanism according to any one of claims 2 to 4, wherein the ejection direction of the slanted ejecting part is an oblique direction along the slanted support body with respect to the front surface of the injection product; the ejection direction of the straight ejection component is perpendicular to the front face of the product.

6. The mold release assisting mechanism for mold injection molding products according to claim 5, wherein an included angle is formed between the ejection direction of the slanted ejecting part and the ejection direction of the straight ejecting part, and the included angle is in a range of 3 to 10 °.

7. The mold injection product ejection assist mechanism of claim 6, wherein an end of the straight top member near the bottom of the groove contacts the bottom of the groove.

8. The mold injection product ejection assist mechanism of claim 7, wherein an area of the groove bottom is smaller than an area of an end of the straight top member near the groove bottom.

9. The mold injection product ejection assist mechanism of claim 6, wherein an end of the straight top member distal from the groove bottom contacts the top block.

10. The mold injection product demolding assisting mechanism according to claim 1, further comprising a row, wherein a moving direction of the row is perpendicular to the side face.

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