A preforming device for a membrane

Abstract

The utility model discloses a kind of preforming devices of membrane material, including upper heating module and lower heating module being set up in upper and lower opposition. The upper die cavity of upper heating module is liftable, is equipped with first chamber, first via, second via and first gas interface, and the lifting shaft of heating assembly passes through first via, and lower end is sequentially connected die head heater and die head;The lower die cavity of lower heating module is fixed, with second chamber, third via opposite with second via and second gas interface, and membrane material heater and turbulence device are fixed in second chamber. The device is preformed by increasing membrane material process, so that the deformation of membrane material is small after sticking, the sticking station mechanism is simplified, and the equipment cost is reduced;Avoid bubble to be generated when membrane material sticks, improve sticking accuracy, reduce membrane material damage, improve product life and equipment yield, effectively solve the problems, such as long time, low precision, big membrane material damage and low product yield, existing in current VR glasses sticking.

Description

Technical Field

[0001] This utility model relates to a forming device, specifically a preforming device for a membrane material. Background Technology

[0002] In existing VR glasses bonding processes, the product is usually directly bonded to the film material without any pre-forming process before bonding.

[0003] This direct bonding method has many problems: First, the bonding time is long, resulting in low production efficiency; second, in order to meet the bonding capacity requirements, the equipment needs to have more bonding stations, which greatly increases the equipment cost; third, the product bonding accuracy is low, and the film material is greatly damaged during the bonding process, which not only affects the product's service life, but also results in a low yield of finished products.

[0004] Therefore, a new technological solution is urgently needed to solve these problems. Utility Model Content

[0005] This invention aims to solve the problems of long bonding time, low precision, significant film material damage, and low product yield in existing VR glasses. By providing a pre-forming device for film material, it improves bonding efficiency, reduces bonding time and equipment costs, enhances bonding precision, reduces film material damage, thereby increasing product lifespan and equipment yield, and reducing production costs.

[0006] To solve the above-mentioned technical problems, the present invention achieves this through the following solution: A preforming device for a membrane material according to the present invention includes an upper heating module and a lower heating module arranged opposite each other.

[0007] The upper heating module includes:

[0008] The upper mold cavity is capable of being raised and lowered, and has a first chamber, as well as a first through hole and a second through hole arranged vertically and coaxially. The upper mold cavity is provided with a first air interface.

[0009] A heating assembly capable of lifting and lowering includes a lifting shaft passing through the first through hole and capable of lifting and lowering through the first through hole, a die head heater installed at the lower end of the lifting shaft, and a die head fixed to the lower end face of the die head heater. The lifting and lowering path of the die head can pass through the second through hole.

[0010] The lower heating module includes:

[0011] The lower mold cavity is a fixed-position mounting structure, which has a second chamber and a third through hole opposite to the second through hole. The lower mold cavity is provided with a second air interface.

[0012] A membrane heater is fixed in the second chamber, with its heating direction facing the third through hole;

[0013] A flow-disrupting device is fixed inside the second chamber and located below the membrane heater.

[0014] Furthermore, the third through hole is configured as an inner hole and an outer hole, with the outer hole being circular and the inner hole being open.

[0015] Furthermore, the diameter of the outer hole is the same as the diameter of the second through hole.

[0016] Furthermore, the membrane heater is a ceramic heater.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The preforming device of this utility model, by adding a preforming process for the film material and a matching preforming device, reduces the amount of deformation required for bonding after the film material is preformed, compared with direct bonding. This reduces the bonding difficulty and the requirements of the bonding process, which helps to simplify the bonding station mechanism, reduce the number of bonding stations in the equipment, and reduce equipment costs.

[0019] 2. The preforming device of this utility model avoids the risk of air bubbles forming between the film material and the product by first covering the outer periphery of the concave surface with the film material. It solves the problems of long bonding time, low precision, large film material damage and low product yield of existing VR glasses. It improves the bonding precision, reduces film material damage, helps to extend product life, improves equipment yield and reduces production costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one side of the preforming device of this utility model.

[0021] Figure 2 for Figure 1 AA sectional view.

[0022] Figure 3 This is a schematic diagram of the preforming device of this utility model after mold closing.

[0023] Figure 4 This is a schematic diagram of the preforming device of this utility model after molding.

[0024] The attached diagram is labeled as follows: Upper mold cavity 1, mold head heater 2, film material heater 3, turbulence device 4, lifting shaft 5, mold head 6, film material 7, lower mold cavity 8, upper heating module 100, and lower heating module 200. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] Example 1: The specific structure of this utility model is as follows:

[0028] Please refer to the appendix. Figure 1-4 The present invention provides a preforming device for a membrane material, comprising an upper heating module 100 and a lower heating module 200 arranged opposite each other.

[0029] The upper heating module includes:

[0030] The upper mold cavity 1 is capable of being raised and lowered. It has a first chamber, as well as a first through hole and a second through hole arranged vertically and coaxially. The upper mold cavity 1 is provided with a first air interface, which is connected to a first negative pressure device through a pipeline.

[0031] The heating assembly is capable of lifting and lowering, and includes a lifting shaft 5 that passes through the first through hole and is capable of lifting and lowering through the first through hole, a die head heater 2 installed at the lower end of the lifting shaft 5, and a die head 6 fixed to the lower end face of the die head heater 2. The lifting and lowering path of the die head 6 can pass through the second through hole.

[0032] The lower heating module includes:

[0033] The lower mold cavity 8 is a fixed-position installation structure, which has a second chamber and a third through hole opposite to the second through hole. The lower mold cavity 8 is provided with a second air interface. The second air interface is connected to a second negative pressure device through a pipeline. The third through hole is configured as an inner hole and an outer hole. The outer hole is circular and the inner hole is open. The diameter of the outer hole is the same as the diameter of the second through hole.

[0034] The membrane heater 3 is fixed in the second chamber, and its heating direction is towards the third through hole; the membrane heater 3 is a ceramic heater; the ceramic heater is a heating element made of ceramic material with thermal conductivity and insulation properties, and has the characteristics of uniform heating, high temperature resistance, good insulation and long service life;

[0035] The flow disturbance device 4 is fixed in the second chamber and located below the membrane heater 3. The flow disturbance device 4 reduces pressure drag by disrupting the gas-fluid boundary layer, delaying or inhibiting turbulent separation, and allowing the gas-fluid to flow more smoothly over the surface of the object.

[0036] Example 2:

[0037] The following describes the working principle of the preforming device of this utility model, and the working process of the preforming device of this utility model is as follows:

[0038] Step 1, as follows Figure 3 As shown, the membrane material 7 is placed in the outer hole of the third through hole and completely covers the outer hole. The upper mold cavity 1 and the lower mold cavity 8 are closed. At this time, the membrane material 7 seals the second through hole and the third through hole, so that both the first chamber and the second chamber are sealed cavities.

[0039] Step 2: The first negative pressure device and the second negative pressure device work simultaneously to evacuate the first chamber and the second chamber. The membrane surface is kept level according to the negative pressure values ​​of the first chamber and the second chamber, so that the pressure in the upper chamber + the weight of the membrane equals the pressure in the lower chamber.

[0040] Step 3: The film material heater 3 of the lower mold cavity 8 heats the film material 7 to the pre-forming set temperature. Simultaneously, the pre-forming mold head is heated to the set temperature by the mold head heater 2.

[0041] Step four: The external lifting drive device drives the lifting shaft 5 to descend, and the lifting shaft 5 drives the mold head heater 2 to descend. The mold head 6 descends to the forming preparation position. After the film material 7 is heated, pre-forming begins. During pre-forming, the mold head 7 gradually descends from the initial forming position to the final forming position. At the same time as forming, compressed air is rapidly injected into the second chamber in the lower mold cavity 8 to squeeze the formed film material 7 toward the mold head 6. The first chamber maintains a vacuum to adsorb the formed mold material 7 toward the mold head 6.

[0042] Step 5: Depressurize the lower mold cavity 8, separate the upper mold cavity 1 and the lower mold cavity 8, and the molded material 7 is adsorbed onto the mold head 6. At the same time as the upper mold cavity 1 is depressurized, the molded film material 7 is manually removed.

[0043] In summary, the preforming device of this utility model, by adding a preforming process for the film material and a matching preforming device, reduces the amount of deformation required during bonding compared to direct bonding. This reduces the bonding difficulty and the requirements of the bonding process, simplifies the bonding station mechanism, reduces the number of bonding stations in the equipment, and lowers the equipment cost.

[0044] This utility model preforming device avoids the risk of air bubbles forming between the film material and the product by first covering the concave outer surface with the film material. It solves the problems of long bonding time, low precision, large film material damage, and low product yield of existing VR glasses. It improves bonding precision, reduces film material damage, helps to extend product life, improves equipment yield, and reduces production costs.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A preforming apparatus for a membrane material, characterized in that, It includes an upper heating module and a lower heating module that are positioned directly opposite each other. The upper heating module includes: The upper mold cavity (1) is capable of being raised and lowered, and has a first chamber, as well as a first through hole and a second through hole arranged vertically and coaxially. The upper mold cavity (1) is provided with a first air interface. The heating assembly is capable of lifting and lowering, and includes a lifting shaft (5) that passes through the first through hole and is capable of lifting and lowering in the first through hole, a die head heater (2) installed at the lower end of the lifting shaft (5), and a die head (6) fixed to the lower end face of the die head heater (2). The lifting and lowering path of the die head (6) can pass through the second through hole. The lower heating module includes: The lower mold cavity (8) is a fixed-position mounting structure, which has a second chamber and a third through hole opposite to the second through hole. The lower mold cavity (8) is provided with a second air interface. A membrane heater (3) is fixed in the second chamber, and its heating direction is toward the third through hole; The turbulence device (4) is fixed in the second chamber and located below the membrane heater (3).

2. The preforming apparatus for a membrane material according to claim 1, characterized in that, The third through hole is configured as an inner hole and an outer hole, with the outer hole being circular and the inner hole being open.

3. The preforming apparatus for a membrane material according to claim 2, characterized in that, The diameter of the outer hole is the same as the diameter of the second through hole.

4. The preforming apparatus for a membrane material according to claim 1, characterized in that, The membrane heater (3) is a ceramic heater.

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