Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a shaping mold for a top-bottom cover, which can solve the problem of the uneven top-bottom cover after shaping by using an inner mold and a foam pressing plate of the mold.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a world lid plastic mould, includes centre form and bubble pressing plate, at least one side of centre form is provided with the depressed part, bubble pressing plate with the opposite side of centre form be provided with depressed part size looks adaptation's bellying.
Further, the four sides of the inner mold are provided with concave parts, and the bubble pressing plates comprise two short-side bubble pressing plates and two long-side bubble pressing plates, wherein the two short-side bubble pressing plates and the two long-side bubble pressing plates are arranged around the inner mold.
Further, the surface of the protruding part and the recessed part, which is contacted with the top and bottom cover, is arranged in an arc surface.
Further, the cross section of the protruding portion is a right triangle.
Further, rounded corners are arranged between the protruding portions and the bubble pressing plates and between the recessed portions and the inner die.
Further, the side edge of the inner membrane is the same as the side edge of the top and bottom cover buckled on the inner mould.
Further, the length of the concave part is smaller than the length of the side edge of the inner die on the side where the concave part is located.
Further, the height of the concave part is smaller than the height of the side edge of the inner die on one side where the concave part is located.
Further, the thickness of the convex portion is the same as the depth of the concave portion.
Further, a fixing hole is formed in the inner die, and the inner die is connected with the fixing workbench through the fixing hole through bolts.
Compared with the prior art, the shaping die for the top and bottom covers comprises an inner die and a bubble pressing plate, wherein at least one side of the inner die is provided with a concave part, and one side of the bubble pressing plate opposite to the inner die is provided with a convex part with the size matched with that of the concave part. The inner mold and the bubble pressing plate using the mold can solve the problem of uneven cover after molding through extrusion molding between the convex part and the concave part.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
As shown in fig. 1, the shaping mold for the top and bottom cover 5 provided by the utility model comprises an inner mold 1 and a bubble pressing plate 2, wherein at least one side of the inner mold 1 is provided with a concave part 3, and one side of the bubble pressing plate 2 opposite to the inner mold 1 is provided with a convex part 4 with the size matched with that of the concave part 3. It can be appreciated that when the top and bottom cover 5 is fastened to the inner mold 1, the bubble pressing plate 2 is used for pressing the side plate of the top and bottom cover 5, and due to the concave portion 3 provided on the inner mold 1, when the bubble pressing plate 2 is used for pressing the inner mold 1, the convex portion 4 and the concave portion 3 are matched in size, that is, the convex portion 4 on the bubble pressing plate 2 can make the side edge of the top and bottom cover 5 fully fit with the concave portion 3, so that the side surface of the top and bottom cover 5 is subjected to extrusion molding from outside to inside, that is, the molded side surface of the top and bottom cover 5 still keeps a trend toward the inner side of the top and bottom cover 5, and the problem that the side surface of the top and bottom cover 5 bulges outwards to form a bulge shape or is not square is prevented.
It should be noted that, in the process of manufacturing the top and bottom cover 5, the inner liner and the cover body are required to be bonded and then the inner mold 1 and the foam pressing plate 2 are used for punching and reinforcing, and the inner mold 1 and the foam pressing plate can be directly used for punching and forming a semi-finished product bonded by the inner liner and the cover body, so that the problem that the side surface of the top and bottom cover 5 bulges or is not square is prevented, and the inner mold 1 and the foam pressing plate 2 can be used for punching the top and bottom cover 5 which is finished but is not square again, so that the modeling of the top and bottom cover 5 is changed again, and the problem that the top and bottom cover 5 is not square is prevented.
Compared with the prior art, the technical scheme of the utility model changes the stress position of the top and bottom cover 5 during forming through the convex part 4 and the concave part 3, so that the side surface of the top and bottom cover 5 is subjected to stamping force biased inwards and formed, namely the side surface of the formed top and bottom cover 5 still keeps the trend of forming towards the inner side of the top and bottom cover 5, and the problem of the uneven top and bottom cover 5 after forming is effectively solved.
In one embodiment, as shown in fig. 1, for some top and bottom covers 5 that need to be punched on four sides, the four sides of the inner mold 1 are provided with concave portions 3, and the foam pressing plate 2 includes two short side foam pressing plates 6 and two long side foam pressing plates 7, and two short side foam pressing plates 6 and two long side foam pressing plates 7 are disposed around the inner mold 1. It will be appreciated that the number of the depressions on the inner mold 1 is consistent with the sum of the number of the protrusions 4 on each of the bubble pressing plates 2, that is, the number of the depressions 3 is equal to the number of the protrusions 4, and the number of the depressions 3 may be determined according to the number of the surfaces to be punched according to actual requirements.
Further, the surface of the protruding part 4 and the recessed part 3, which is in contact with the top and bottom cover 5, is in a cambered surface. When the bubble pressing plate 2 and the inner die 1 are used for punching, the protruding portion 4 is contacted with one side of the top and bottom cover 5, the other side of the top and bottom cover 5 is contacted with the surface of the concave portion 3, the protruding portion 4 and the surface of the concave portion 3, which is contacted with the top and bottom cover 5, are arranged in an arc shape, namely, the arc surface can not damage the surface of the top and bottom cover 5 and can not leave obvious marks when the protruding portion 4 and the concave portion 3 punch the top and bottom cover 5, so that the surface stress of the top and bottom cover 5 is balanced, excessive edges and corners of the protruding portion 4 or the concave portion 3 are prevented, and when the top and bottom cover 5 is extruded, the top and bottom cover 5 is damaged or deeper marks are left on the surface of the top and bottom cover 5, and the attractiveness of the top and bottom cover 5 is affected.
Specifically, as shown in fig. 2, the cross section of the protruding portion 4 is a right triangle. The slope size of the hypotenuse of the right triangle can be set according to the hardness requirement of the material of the top and bottom cover 5, so that a better stamping effect is realized.
Further, rounded corners 8 are provided between the convex portions 4 and the bubble pressing plate 2 and between the concave portions 3 and the inner die 1. The rounded corners 8 enable the surface transition between the protruding portion 4 and the surface of the bubble pressing plate 2 to be smoother, and the surface transition between the recessed portion 3 and the surface of the inner mold 1 to be smoother, namely, when the protruding portion 4 and the recessed portion 3 punch the top and bottom cover 5, the top and bottom cover 5 cannot be damaged, obvious punching marks cannot be left on the top and bottom cover 5, and the attractiveness of the top and bottom cover 5 is guaranteed.
Further, the side edge of the inner film is the same as the side edge of the top and bottom cover 5 buckled on the inner mold 1. Can guarantee world lid 5 can stable lock be in on the centre form 1, prevent when centre form 1 with press bubble board 2 to punch press world lid 5 takes place not hard up, leads to world lid 5 pressfitting's effect is relatively poor.
Specifically, the length of the concave portion 3 is smaller than the length of the side edge of the inner mold 1 on the side where the concave portion 3 is located, and the height of the concave portion 3 is smaller than the height of the side edge of the inner mold 1 on the side where the concave portion 3 is located. That is, when the top and bottom cover 5 is punched, the concave portion 3 is only in contact with a part of the side surface of the top and bottom cover 5, so that the excessive contact between the concave portion 3 and the side surface of the top and bottom cover 5 is prevented from causing a punching transition, and the top and bottom cover 5 is hardly deformed by punching to form a square state.
Specifically, the thickness of the protruding portion 4 is the same as the depth of the recessed portion 3, so that the protruding portion 4 protrudes from the recessed portion 3 to be completely attached, and the effect that the top and bottom cover 5 is formed by punching is better.
It should be noted that, after the top and bottom covers 5 are punched by the protruding portions 4 and the recessed portions 3, a square state can be formed or the side surfaces of the top and bottom covers 5 are slightly inclined inwards towards the inside of the top and bottom covers 5, and when the top and bottom covers 5 are buckled on the top and bottom box, the top and bottom covers 5 can be restored to the square state, so that the beauty of the top and bottom covers is ensured.
Further, a fixing hole 9 is formed in the inner die 1, and the inner die 1 is connected with a fixing workbench through the fixing hole 9 through bolts. It can be appreciated that the fixed workbench can be a workbench surface of the bubble pressing machine, the inner die 1 is detachably connected with the fixed workbench, and the inner die 1 with different parameters can be replaced according to actual requirements, so that the processing of the top-bottom covers 5 with different size types is facilitated.
In summary, according to the shaping mold for the top and bottom cover provided by the utility model, the stress position of the top and bottom cover during shaping is changed through the protruding part and the recessed part, so that the side surface of the top and bottom cover is subjected to stamping force biased towards the inner part and is shaped, namely, the side surface of the shaped top and bottom cover still keeps a trend of being shaped towards the inner side of the top and bottom cover, the number of the recessed parts can be determined according to the number of the surfaces needing to be stamped according to actual requirements, one surfaces of the protruding part and the recessed part are arranged in an arc surface manner, damage to the top and bottom cover or deeper marks on the top and bottom cover surface are prevented, and a rounding angle is arranged between the protruding part and the bubble pressing plate and between the recessed part and the inner mold, so that the top and bottom cover is not damaged, an obvious stamping mark is not left on the top and bottom cover, and the attractiveness of the top and bottom cover is ensured. Compared with the prior art, the inner mold and the bubble pressing plate of the mold can solve the problem of uneven cover after molding through extrusion molding between the convex part and the concave part.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are all within the scope of the present utility model.