Hot pressing mold core and hot pressing mold

Abstract

The utility model discloses a hot-pressing die core and a hot-pressing die, which are used for positioning a plastic part and assisting the plastic part to be adhered on the inner surface of a metal shell, the hot-pressing die core comprises a metal lower die holder and a scratch-resistant frame, and the scratch-resistant frame is arranged around the metal lower die holder and keeps the metal shell and the metal lower die holder to be arranged at an interval. The metal lower die base is used for supporting the plastic part, a plurality of positioning columns are arranged at the lower end of the plastic part at intervals in a protruding mode, a plurality of positioning grooves corresponding to the positioning columns are formed in the anti-scraping frame, when the plastic part is placed in the hot-pressing die core, the positioning columns are correspondingly inserted into the positioning grooves and position the plastic part, and the hot-pressing die comprises the hot-pressing die core.

Description

Technical Field

[0001] This utility model relates to the field of product assembly, and in particular to a hot pressing mold core and a hot pressing mold. Background Technology

[0002] Consumer electronics such as mobile phones and tablets are widely used by users. As the configuration of mobile phones and tablets improves and the battery capacity increases, the previous plastic casings could not quickly dissipate the heat generated by the battery. Therefore, researchers have replaced plastic casings with metal casings, which not only allows the heat generated by mobile phones and tablets to dissipate quickly, but also makes the metal casings lighter and maintains high strength.

[0003] In the current assembly process of metal casings, plastic parts are generally bonded to the inner surface of the metal casing with adhesives, and then circuit boards, batteries, etc. are fixed to the plastic parts to complete the assembly of mobile phones and tablets. The adhesives connecting the plastic parts and the metal casing need to be heated and cured to become stable. However, the existing metal casings are prone to scratches during contact with hot press fixtures, resulting in a high product defect rate, which greatly troubles manufacturers. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a hot pressing mold core and hot pressing mold that can effectively avoid scratching the metal shell.

[0005] This utility model discloses a hot-press mold core for positioning plastic parts and assisting in bonding the plastic parts to the inner surface of a metal housing. It includes a lower metal mold base and a scratch-resistant frame. The scratch-resistant frame surrounds the lower metal mold base and maintains a distance between the metal housing and the lower metal mold base. The lower metal mold base supports the plastic parts. Several positioning posts are protruding from the lower end of the plastic parts at intervals. The scratch-resistant frame has several positioning grooves corresponding to the positioning posts. When the plastic parts are placed on the hot-press mold core, the positioning posts are inserted into the corresponding positioning grooves to position the plastic parts.

[0006] Furthermore, the scratch-resistant frame at least covers the outer periphery of the upper part of the metal lower mold base.

[0007] Furthermore, the scratch-resistant frame covers the upper surface of the lower metal mold base to maintain the metal housing at a distance from the lower metal mold base.

[0008] Furthermore, the lower metal mold base is provided with a positioning hole for accommodating the positioning groove to receive the positioning post. When the positioning post is inserted into the positioning groove, at least a portion of the positioning post is located in the positioning hole.

[0009] Furthermore, the scratch-resistant frame is bonded and fixed to the lower metal mold base.

[0010] Furthermore, the scratch-resistant frame and the lower metal mold base are respectively provided with magnets of opposite polarity, and the scratch-resistant frame is magnetically connected to the lower metal mold base.

[0011] Furthermore, the scratch-resistant frame and the lower metal mold base are fixedly connected by screws.

[0012] Furthermore, a foolproof part is recessed at one of the top corners of the lower metal mold base.

[0013] This utility model also discloses a hot press mold, including the above-mentioned hot press mold core, and also including a metal upper mold base. The plastic part and the metal shell are located between the metal lower mold base and the metal upper mold base, and the adhesive between the plastic part and the metal shell is cured by heating through the hot press mold.

[0014] Furthermore, the upper metal mold base is recessed with a receiving groove to accommodate the metal shell. When the upper metal mold base and the lower metal mold base are closed, the metal shell and the plastic part are located in the receiving groove.

[0015] The hot-press mold core provided by this utility model, by setting a scratch-resistant frame that contacts the metal shell, can effectively prevent scratches on the metal shell. The hot-press mold including the hot-press mold core provided by this utility model, through the metal upper mold base heating the metal shell, can accelerate the curing of the adhesive connecting the plastic part and the metal shell, greatly improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a hot-pressing mold core for placing plastic parts according to the present invention.

[0018] Figure 2 for Figure 1 The image shows a three-dimensional view of the hot-pressing mold core.

[0019] Figure 3 for Figure 2 A magnified view of part A of the hot-pressing mold core shown.

[0020] Figure 4 for Figure 2The exploded three-dimensional view of the hot-pressing mold core is shown.

[0021] Figure 5 for Figure 2 The top view of the hot-pressing mold core shown.

[0022] Figure 6 This is a top view of the protective ring of this utility model.

[0023] Figure 7 This is a perspective view of the plastic part of this utility model.

[0024] Figure 8 for Figure 7 A three-dimensional view of the plastic part from another angle. Detailed Implementation

[0025] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0026] The terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this utility model is usually placed in when in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0028] Please see Figures 1-8 This utility model discloses a hot-pressing mold core for positioning a plastic part 100 and assisting in bonding the plastic part 100 to the inner surface of a metal housing. It includes a lower metal mold base 10 and a scratch-resistant frame 20. The scratch-resistant frame 20 surrounds the lower metal mold base 10 and maintains a distance between the metal housing and the lower metal mold base 10, preventing contact at the corners of the metal housing and the lower metal mold base 10 that could cause scratches on the metal housing and result in a poor product appearance. In this embodiment, the lower metal mold base 10 supports the plastic part 100, providing support for the plastic part 100 and the metal housing, facilitating the bonding of the plastic part 100 to the inner surface of the metal housing.

[0029] Please see Figure 2 , Figure 3 and Figures 5-8 The lower end of the plastic part 100 is provided with several positioning posts 120 at intervals. The anti-scratch frame 20 is provided with several positioning grooves 21 corresponding to the positioning posts 120. When the plastic part 100 is placed on the hot press mold core, the positioning posts 120 are inserted into the positioning grooves 21 and the plastic part 100 is positioned.

[0030] In this embodiment, the scratch-resistant frame 20 at least covers the upper outer periphery of the lower metal mold base 10. Furthermore, the scratch-resistant frame 20 can also cover the upper surface of the lower metal mold base 10 to maintain a distance between the inner surface of the metal housing and the lower metal mold base 10, thereby effectively preventing the lower metal mold base 10 from contacting the inner surface of the metal housing and causing scratches, thus resulting in a poor appearance of the inner surface of the metal housing.

[0031] Please see Figure 4 The lower metal mold base 10 is provided with a positioning hole 11 for cooperating with the positioning groove 21 to accommodate the positioning post 120. When the positioning post 120 is inserted into the positioning groove 21, at least a portion of the positioning post 120 is located in the positioning hole 11.

[0032] In this embodiment, the positioning groove 21 of the anti-scratch frame 20 and the positioning hole 11 of the metal lower mold base 10 are arranged side by side in the horizontal direction to form a receiving cavity for accommodating the positioning post 120. When the positioning post 120 is inserted into the receiving cavity, one side of the positioning post 120 is located in the positioning groove 21, and the other side of the positioning post 120 is located in the positioning hole 11.

[0033] In other embodiments, the positioning groove 21 of the anti-scratch frame 20 and the positioning hole 11 of the metal lower mold base 10 are stacked in the vertical direction to form a receiving cavity for accommodating the positioning post 120. When the positioning post 120 is inserted into the receiving cavity, the end of the positioning post 120 near the plastic part is located in the positioning groove 21, and the end of the positioning post 120 is located in the positioning hole 11.

[0034] The scratch-resistant frame 20 is fixed to the lower metal mold base 10 in a fixed manner or the scratch-resistant frame 20 is fixed to the lower metal mold base 10 in a detachable manner.

[0035] When the anti-scratch frame 20 is fixed to the metal lower mold base 10 in a fixed manner, or further, the anti-scratch frame 20 is fixed to the metal lower mold base 10 by adhesive bonding, the advantage is that the connection method is more stable, which can effectively increase the service cycle and service life, thereby enabling the processing of more products and saving the cost of frequently replacing the hot pressing mold core.

[0036] When the anti-scratch frame 20 is detachably fixed to the metal lower mold base 10, the advantage is that different anti-scratch frames 20 can be replaced to adapt to different models of the metal housing and the plastic part 100.

[0037] One method is to fix the anti-scratch frame 20 and the metal lower mold base 10 together with screws. The advantage of this method is that the connection is relatively stable, but the disadvantage is that the replacement process is more complicated.

[0038] Another method is to provide magnets with opposite polarities for the anti-scratch frame 20 and the lower metal mold base 10. The anti-scratch frame 20 is connected to the lower metal mold base 10 by magnetic attraction. The advantage is that it is easier to replace. The disadvantage is that after a certain number of uses, the stability becomes poor and the anti-scratch frame 20 needs to be evaluated or repaired frequently to ensure the accuracy and quality of product processing.

[0039] Please see Figures 1-3 The metal lower mold base 10 is recessed at one of its top corners to prevent incorrect placement of the plastic part 100 and / or the metal shell, thereby greatly reducing the defect rate and scrap rate.

[0040] This utility model also discloses a hot press mold, including the hot press mold core described above. The hot press mold also includes a metal upper mold base. The plastic part 100 and the metal shell are located between the metal lower mold base 10 and the metal upper mold base. The adhesive between the plastic part 100 and the metal shell is cured by heating the metal lower mold base 10 and the metal upper mold base through the hot press mold.

[0041] In this embodiment, the adhesive is AB glue. When the temperature of the hot press mold is heated to 70-80 degrees Celsius, the curing of the AB glue can be accelerated. As a result, there is no need to wait for the AB glue to cure during the assembly process, which can increase the output per unit time.

[0042] In this embodiment, a plurality of connecting posts 110 are protruding around the surface of the plastic part 100 away from the metal lower mold base 10. The plastic part 100 and the metal shell are connected through the connecting posts 110, and the adhesive is located between the end face of the connecting post 110 and the metal shell.

[0043] Furthermore, the upper metal mold base is recessed with a receiving groove to accommodate the metal shell. When the upper metal mold base and the lower metal mold base 10 are closed, the metal shell and the plastic part 100 are located in the receiving groove and are heated by the hot press mold, so that the temperature of the upper metal mold base is transferred to the adhesive through the metal shell, thereby accelerating the curing of the adhesive.

[0044] It should be further explained that in the embodiment where the anti-scratch frame 20 and the metal lower mold base 10 are connected by magnetic attraction, the magnet is a neodymium iron boron magnet, which can withstand temperatures of over 200 degrees Celsius without demagnetizing, while the heating temperature of the hot pressing mold is 70-80 degrees Celsius, thus ensuring that demagnetization or even the anti-scratch frame 20 will not fall off the metal lower mold base 10 during the working process.

[0045] In this embodiment, more specifically, the lower metal mold base 10 and the upper metal mold base are made of stainless steel, and the anti-scratch frame 20 is made of acetal steel. The acetal steel frame is a non-metallic material that can effectively prevent scratches on the metal shell and has a wide range of industrial applications.

[0046] The hot-press mold core provided by this utility model, by setting a scratch-resistant frame 20 in contact with the metal shell, can effectively prevent scratches on the metal shell. The hot-press mold including the hot-press mold core provided by this utility model can accelerate the curing of the adhesive connecting the plastic part 100 and the metal shell by heating the metal shell through the upper metal mold base, which can greatly improve production efficiency.

[0047] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A hot-pressing mold core for positioning a plastic member and assisting in bonding the plastic member to an inner surface of a metal case, characterized by, The device includes a lower metal mold base and a scratch-resistant frame. The scratch-resistant frame surrounds the lower metal mold base and maintains a distance between the metal housing and the lower metal mold base. The lower metal mold base supports the plastic part. The lower end of the plastic part is provided with several positioning posts at intervals. The scratch-resistant frame is provided with several positioning grooves corresponding to the positioning posts. When the plastic part is placed on the hot press mold core, the positioning posts are inserted into the positioning grooves to position the plastic part.

2. The hot press mold core of claim 1, wherein, The scratch-resistant frame at least covers the outer perimeter of the upper part of the metal lower mold base.

3. The hot press mold core of claim 2, wherein, The scratch-resistant frame covers the upper surface of the lower metal mold base to maintain the metal housing at a distance from the lower metal mold base.

4. The hot press mold core of claim 1, wherein, The lower metal mold base is provided with a positioning hole for accommodating the positioning groove to receive the positioning post. When the positioning post is inserted into the positioning groove, at least a portion of the positioning post is located in the positioning hole.

5. The hot press mold core of claim 1, wherein, The scratch-resistant frame is bonded and fixed to the lower metal mold base.

6. The hot press mold core of claim 1, wherein, The scratch-resistant frame and the lower metal mold base are respectively provided with magnets of opposite polarity, and the scratch-resistant frame is magnetically connected to the lower metal mold base.

7. The hot press mold core of claim 1, wherein, The scratch-resistant frame and the lower metal mold base are fixedly connected by screws.

8. The hot press mold core of claim 1, wherein, A foolproof part is recessed at one of the top corners of the metal lower mold base.

9. A hot press mold comprising the hot press mold core according to any one of claims 1 to 8, characterized by, It also includes a metal upper mold base, the plastic part and the metal housing are located between the metal lower mold base and the metal upper mold base, and the adhesive between the plastic part and the metal housing is cured by heating with the hot press mold.

10. The hot press mold of claim 9, wherein, The upper metal mold base is recessed with a receiving groove to accommodate the metal shell. When the upper metal mold base and the lower metal mold base are closed, the metal shell and the plastic part are located in the receiving groove.

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