Wrapping positioning jig

Abstract

The utility model relates to the technical field of electronic product conductive heat dissipation foam processing equipment, and discloses a wrapping positioning jig which comprises a bent plate body, two bent edges of the plate body are crossed and staggered up and down, and a pair of clamping grooves bent inwards are formed in the two bent edges of the plate body. One end of the two crossed edges of the plate body is of a square tubular structure, and the other end of the two crossed edges of the plate body is of a semi-arc tubular structure. Compared with the prior art that the heat conduction and heat dissipation film is directly attached to the foam body, the finished conductive and heat dissipation foam liner is better in internal attachment and smoother in appearance. Compared with an existing product with wrinkles, the smooth appearance structure of the conductive heat dissipation foam liner is easier for the subsequent cutting process of the conductive heat dissipation foam liner. The internal structure of the conductive heat dissipation foam liner is more stable, so that the heat conduction and heat dissipation effects of the foam liner are improved. The foam gasket wrapped by the positioning jig improves the yield of products.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive heat dissipation foam processing equipment for electronic products, in particular to a wrapping positioning fixture. Background Art

[0002] Conductive heat dissipation foam is widely used in electronic devices. It can not only be used as a heat dissipation material to absorb and disperse the heat inside the electronic device to maintain the normal operation of the device, but also can be used to connect motors, sensors, batteries and other devices to achieve functional connectivity. In addition, conductive heat dissipation foam also has good antistatic properties and can be used for transient protection, as well as dust and water resistance to protect the device from dust and moisture.

[0003] When making thermally conductive and heat-dissipating foam pads, the conventional method is to directly attach the thermally conductive and heat-dissipating film to the foam body and wrap it. After production, it was found that the thermally conductive and heat-dissipating film was not attached tightly enough to the foam body, and wrinkles were easily formed. The thickness of the foam pad after molding was inconsistent, resulting in poor size. In short, the number of defective products after wrapping in this way increased, and defective products would affect the thermal conductivity and heat dissipation effect during use. Utility Model Content

[0004] The purpose of the utility model is to provide a package positioning fixture to solve the problems raised in the above-mentioned prior art.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: a wrapping positioning fixture, including a curved plate body, the two curved edges of the plate body are cross-shaped and staggered up and down, and the two curved edges of the plate body are provided with a pair of inwardly bent grooves.

[0006] Preferably, the plate body is an aluminum foil plate.

[0007] Preferably, one end of the two intersecting edges of the plate body is a square tubular structure, and the other end of the two intersecting edges of the plate body is a semicircular arc tubular structure.

[0008] Preferably, the lengths of the pair of slots are respectively smaller than the lengths of the two bent edges of the plate body.

[0009] Preferably, a heat-conducting and heat-dissipating film is provided in the plate body, two edges of the heat-conducting and heat-dissipating film are placed in a pair of slots, and a foam body is also provided on the heat-conducting and heat-dissipating film in the plate body.

[0010] Preferably, the thermally conductive heat dissipating film is composed of a temperature-resistant single-sided adhesive, a graphite layer, and a hot-melt double-sided adhesive from the outside to the inside, and the hot-melt double-sided adhesive is bonded to the foam body.

[0011] The beneficial effects of the utility model are concentrated in that the conductive heat dissipation foam pad wrapped by the positioning fixture has at least the following advantages:

[0012] 1. Compared with the prior art of directly attaching the thermally conductive heat dissipating film to the foam body, the finished conductive heat dissipating foam pad has better internal adhesion and a smoother appearance.

[0013] 2. Compared with the wrinkled structure of existing products, the flat appearance of the conductive heat dissipation foam pad is also easier to cut in the subsequent conductive heat dissipation foam pad.

[0014] 3. Since the internal structure of the conductive heat dissipation foam pad is more stable, the thermal conductivity and heat dissipation effect of the foam pad is improved.

[0015] With the above advantages, the conductive heat dissipation foam pad wrapped in the positioning fixture improves the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional Figure 1 ;

[0017] Figure 2 The three-dimensional Figure 2 ;

[0018] Figure 3 This is a front view of the conductive heat dissipation foam pad of the utility model;

[0019] Among them, 1. Plate body; 2. Card slot; 3. Square tubular structure; 4. Semi-circular tubular structure; 5. Thermal conductive heat dissipation film; 6. Foam body; 7. Heat-resistant single-sided adhesive; 8. Graphite layer; 9. Hot-melt double-sided adhesive. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display comprising a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0024] Embodiment 1

[0025] See also Figure 1-Figure 3 , a wrapping positioning fixture, is mainly used to produce conductive heat dissipation foam, which is widely used in electronic products. For example, in mobile phones, computers, tablets and other devices, conductive foam is used as a filling material to connect the grounding point of the circuit board and the metal shell or components to achieve the consistency of the system ground potential and reduce the electromagnetic radiation of the circuit board. At the same time, it can also play an effective heat insulation role, prevent overheating damage to circuit components, and ensure the normal operation of the equipment. In addition, conductive foam can also improve the anti-static ability of the product and protect electronic components from static damage.

[0026] In this embodiment, the package positioning fixture includes a curved plate 1, the two curved edges of the plate 1 are cross-shaped and staggered up and down, the two curved edges of the plate 1 are provided with a pair of inwardly bent slots 2, one end of the two intersecting edges of the plate 1 is a square tubular structure 3, which is the rear end discharge port and is set in a standard manner. The other end of the two intersecting edges of the plate 1 is a semicircular tubular structure 4. This end is the front end feed port and is set larger.

[0027] The standard size of the square tubular structure 3 can be set according to the size required by the product. The width of the product can range from 3mm to 30mm. The width selection is usually related to the installation location and the area to be covered. The thickness of the product can range from 1mm to 20mm, which mainly depends on the shielding effectiveness, heat dissipation effect and installation space restrictions. Generally, thicker foam has better shielding effect and heat dissipation performance, but also takes up more space.

[0028] In this embodiment, the plate body 1 can be bent using an isosceles trapezoidal body, with the front end being the feed port (long side) of the heat-conducting and heat-dissipating film 5, and the rear end being the discharge port (short side) of the heat-conducting and heat-dissipating film 5. A pair of slots 2 are located on the left and right sides (isosceles sides) of the plate body 1, and the bent pair of slots 2 have a size gap to prevent the heat-conducting and heat-dissipating film 5 from being offset when it is being fed. Since the plate body 1 is staggered up and down, the upper side of the heat-conducting and heat-dissipating film 5 is discharged from the upper slot of the jig when it is fed, and the lower side of the heat-conducting and heat-dissipating film 5 is discharged from the lower slot of the jig when it is fed. The advantage is that the heat-conducting and heat-dissipating film 5 does not shift up and down due to friction when it is wrapped, and the surface of the finished product is flat after wrapping, which is convenient for cutting.

[0029] The width of the gap between the bent pair of slots 2 is determined by the thickness of the heat-conducting and heat-dissipating film 5, and the bent pair of slots 2 can be gap-matched with the heat-conducting and heat-dissipating film 5. The depth of the gap between the bent pair of slots 2 is determined by the hardness of the heat-conducting and heat-dissipating film 5. The depth of the gap between the bent pair of slots 2 can be appropriately reduced for the heat-conducting and heat-dissipating film 5 with a relatively stable shaping effect, and the opposite is true for the heat-conducting and heat-dissipating film 5 with an unstable shaping effect. In short, it is sufficient to ensure the limit constraint on the heat-conducting and heat-dissipating film 5 when it is moving.

[0030] During operation, when the heat-conducting and heat-dissipating film 5 is fed through the wrapping and positioning jig, the semicircular shape at the front end gradually changes into an arc shape, and after passing through the rear end of the wrapping and positioning jig so that the heat-conducting and heat-dissipating film 5 and the foam body 6 are closely attached, they become a square shape.

[0031] As a more specific implementation of this embodiment, the plate body 1 can be made of any one of plastic, steel or aluminum. In this embodiment, since the conductive heat dissipation foam pad is light in weight, in order to make a positioning fixture and facilitate bending and forming, the plate body 1 can be an aluminum foil plate. Aluminum foil plate is a thin metal material, mainly made of aluminum alloy. It is light and easy to process.

[0032] As a more specific implementation of this embodiment, the lengths of the pair of slots 2 are respectively smaller than the lengths of the two bent edges of the plate body 1. A non-bending area is left at the bending part of the slot 2 from the rear end (exit end) of the positioning fixture, thereby forming a square tubular structure 3 to achieve the merging of the heat-conducting and heat-dissipating film 5.

[0033] The length of the non-bending area can be 1-5 cm. During production, the heat-conducting and heat-dissipating film 5 and the foam body 6 in this area are bonded together and removed from the discharge port after being combined.

[0034] As another embodiment, the heat-conducting and heat-dissipating film 5 can be disposed in the board body 1 , and the two edges of the heat-conducting and heat-dissipating film 5 are placed in a pair of slots 2 . The foam body 6 can be disposed on the heat-conducting and heat-dissipating film 5 in the board body 1 .

[0035] During installation, the two edges of the heat-conducting and heat-dissipating film 5 are bent and inserted into a pair of slots 2, and then the film is fed from the feed port to the discharge port to complete the laying. The foam body 6 is fed from the feed port to the discharge port to complete the wrapping of the heat-conducting and heat-dissipating film 5 on the foam body 6.

[0036] As a more specific implementation of this embodiment, the heat-conducting heat dissipation film 5 is respectively composed of a temperature-resistant single-sided adhesive 7, a graphite layer 8, and a hot-melt double-sided adhesive 9 from the outside to the inside, and the hot-melt double-sided adhesive 9 is bonded to the foam body 6. Among them, the graphite layer 8 is an important part of its structure and has specific functions and properties. The graphite layer is mainly composed of a single carbon element, and its crystal structure belongs to the hexagonal crystal system and presents a hexagonal layered structure. In the graphite layer 8, carbon atoms are combined through the σ bond formed by the sp2 hybrid orbital and the delocalized π bond formed by the Pz orbital to form a firm hexagonal grid-like plane. This structure gives the graphite layer 8 excellent electrical conductivity and thermal conductivity.

[0037] Processing principle: The processing of the conductive heat dissipation foam pad can be divided into two steps:

[0038] 1. When making the package, a layer of graphite layer 8 is attached to the heat-resistant single-sided adhesive 7, and a layer of hot-melt double-sided adhesive 9 is attached on the graphite layer 8, and then pressed together at high temperature to form a heat-conducting and heat-dissipating film 5;

[0039] 2. During wrapping and molding, the semi-finished thermal conductive heat dissipation film 5 is passed through the wrapping and positioning fixture, and after pulling the thermal conductive heat dissipation film 5, the buffer foam body 6 is placed on the thermal conductive heat dissipation film 5. When it passes through a pair of card slots 2 of the wrapping and positioning fixture, an arc-shaped angle from large to small is formed, so that the thermal conductive heat dissipation film 5 is more closely attached to the foam body 6, and a conductive heat dissipation foam pad is formed after high temperature pressing of the equipment.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A package positioning fixture, characterized in that: The invention comprises a curved plate body, wherein two curved edges of the plate body are cross-shaped and staggered up and down, and a pair of inwardly bent slots are arranged on the two curved edges of the plate body.

2. A package positioning jig according to claim 1, characterized in that: The plate body is an aluminum foil plate.

3. A package positioning jig according to claim 1, characterized in that: One end of the two intersecting edges of the plate body is in a square tubular structure, and the other end of the two intersecting edges of the plate body is in a semicircular arc tubular structure.

4. A package positioning jig according to claim 1, characterized in that: The lengths of the pair of slots are respectively smaller than the lengths of the two curved edges of the plate body.

5. The package positioning fixture according to claim 1, characterized in that: A heat-conducting and heat-dissipating film is arranged in the plate body, and two edges of the heat-conducting and heat-dissipating film are placed in a pair of slots. A foam body is also arranged on the heat-conducting and heat-dissipating film in the plate body.

6. A package positioning jig according to claim 5, characterized in that: The heat-conductive heat-dissipating film is composed of a temperature-resistant single-sided adhesive, a graphite layer, and a hot-melt double-sided adhesive from the outside to the inside, and the hot-melt double-sided adhesive is bonded to the foam body.

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