Vacuum laminating jig for glass

Abstract

The utility model discloses a vacuum laminating jig for glass, which comprises a jig body, the upper surface of the jig body is provided with a table top matched with the glass, a plurality of negative pressure holes are uniformly distributed on the table top, and the negative pressure holes are communicated to a negative pressure channel arranged on the surface of the jig body; the table top of the jig body is further provided with a latticed groove structure composed of transverse grooves and longitudinal grooves, and the negative pressure holes are located in lattices of the latticed grooves. The latticed grooves are formed in the table top of the jig body, so that groove-shaped structures allowing air to flow are formed among the negative pressure holes of the table top, when vacuum equipment works, the negative pressure holes are vacuumized firstly, glass is tightly attached to the table top under the action of air pressure difference, and due to the action of the latticed grooves, the contact area between the table top and the glass is reduced, and the glass is tightly attached to the table top. Air between the attaching faces of the table top and the glass is basically evacuated by the negative pressure hole, air remaining between the table top and the glass is reduced, and then the situation that air expands and flows to drive the glass to move when a cavity of vacuum equipment is vacuumized is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of glass bonding, in particular to a vacuum bonding fixture for glass. Background Art

[0002] For example, the screens of electronic devices such as mobile phones, tablet computers, and car displays are made of glass and other layers of materials bonded to the glass. The existing process mainly uses a vacuum bonding process to bond other layers of materials on the glass in sequence. For this purpose, a glass fixing fixture is required to adsorb and fix the glass first. The existing glass fixing fixture is usually provided with a flat surface for placing the glass, and a number of negative pressure holes connected to the flat surface. When the vacuum equipment is working, it first draws a vacuum towards the negative pressure holes, so that the air between the glass and the flat surface is evacuated through the negative pressure holes to achieve the purpose of adsorbing and fixing the glass. After that, the layers of materials can be bonded to the glass.

[0003] The problem with the prior art is that when the vacuum equipment used for vacuum bonding is evacuated, the air in the tiny gap between the glass and the flat surface of the glass fixing fixture will expand and flow due to the smaller chamber environment of the vacuum equipment, causing the glass to be lifted and moved by the rapidly expanding gas, causing the glass to deviate from the preset placement position. At the same time, the pressure difference between the negative pressure hole of the glass fixing fixture and the chamber of the vacuum equipment will also interact with each other to produce gas turbulence, which will also cause the glass to deviate, and ultimately lead to deviations in the subsequent bonding layer materials, affecting the production accuracy of the product and reducing the yield rate. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum bonding fixture for glass, which solves the problems existing in the prior art, can stably adsorb glass and will not cause deviation during the vacuum equipment's evacuation process, thereby ensuring the production accuracy of subsequent processes and improving the product yield.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A glass vacuum bonding jig comprises a jig body, wherein the upper surface of the jig body is configured as a table surface for matching the glass, a plurality of negative pressure holes are evenly arranged on the table surface, and the negative pressure holes are connected to a negative pressure channel arranged on the surface of the jig body; a grid-like groove structure composed of transverse grooves and longitudinal grooves is also arranged on the table surface of the jig body, and the negative pressure holes are located in the grids of the grid-like grooves.

[0007] The width of the transverse groove is set to 0.2-10 mm, and the width of the longitudinal groove is set to 0.2-10 mm.

[0008] Preferably, the width of the transverse groove and the longitudinal groove are both set to 3 mm.

[0009] The depth of the transverse groove is set to 0.2-10 mm, and the depth of the longitudinal groove is set to 0.2-10 mm.

[0010] Preferably, the depth of the transverse groove and the longitudinal groove are both set to 1.5 mm.

[0011] The upper edges of both side walls of the transverse groove and the longitudinal groove are chamfered.

[0012] The negative pressure holes are arranged in a rectangular array; the negative pressure holes in each row are connected to the same negative pressure channel, or the negative pressure holes in each column are connected to the same negative pressure channel.

[0013] The port of the negative pressure channel is arranged on the side of the fixture body.

[0014] Steps are arranged at both ends of the upper surface of the fixture body, and the steps are lower than the table top; a plurality of waist holes are arranged on the steps, and the waist holes are used to cooperate with bolts to lock the fixture body.

[0015] After adopting the above technical solution, the utility model has the following technical effects:

[0016] The utility model arranges grid-like grooves on the table top of the fixture body so that a groove-like structure for air flow is formed between the negative pressure holes of the table top. When the vacuum equipment is working, the negative pressure holes are first evacuated, and the glass is pressed against the table top under the action of the air pressure difference. Due to the action of the grid-like grooves, the contact area between the table top and the glass becomes smaller, and the air between the contacting surfaces of the two is basically evacuated by the negative pressure holes, and the air remaining between the table top and the glass is greatly reduced. Afterwards, when the chamber of the vacuum equipment is evacuated, there is no more air expansion and flow to drive the glass to move, thereby ensuring that the position of the glass is accurate after being adsorbed and fixed, and does not affect the production accuracy of the subsequent processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a specific embodiment of the utility model;

[0018] Figure 2 It is a front view of a specific embodiment of the utility model;

[0019] Figure 3 A top view of a specific embodiment of the utility model;

[0020] Figure 4 A cross-sectional view of a specific embodiment of the utility model ( Figure 3 Middle AA direction);

[0021] Description of Figure Numbers:

[0022] 1- fixture body; 2- table top; 3- negative pressure hole; 4- negative pressure channel; 5- transverse groove; 6- longitudinal groove; 7- grid-like groove structure; 8- step; 9- waist hole. DETAILED DESCRIPTION

[0023] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0024] refer to Figures 1 to 4 As shown, the utility model discloses a vacuum bonding jig for glass, comprising a jig body 1, the upper surface of the jig body 1 is arranged as a table top 2 for fitting with the glass, a plurality of negative pressure holes 3 are evenly arranged on the table top 2, the negative pressure holes 3 are connected to a negative pressure channel 4 arranged on the surface of the jig body 1, and the negative pressure channel 4 is used to connect a vacuum pumping device; a grid-like groove structure 7 composed of transverse grooves 5 and longitudinal grooves 6 is also arranged on the table top 2 of the jig body 1, and the negative pressure holes 3 are located in the grid of the grid-like groove 7.

[0025] Through the above scheme, the utility model arranges grid-like grooves 7 on the table 2 of the fixture body 1, so that a groove structure for air flow is formed between the negative pressure holes 3 of the table 2. When the vacuum equipment is working, the negative pressure holes 3 are first evacuated, and the glass is pressed against the table 2 under the action of the air pressure difference. Due to the action of the grid-like grooves 7, the contact area between the table 2 and the glass becomes smaller, and the air between the fitting surfaces of the two is basically evacuated by the negative pressure holes 3, and the air remaining between the table 2 and the glass is greatly reduced. Afterwards, when the chamber of the vacuum equipment is evacuated, there is no more air expansion and flow to drive the glass to move, thereby ensuring that the position of the glass is accurate after adsorption and fixation, and does not affect the production accuracy of the subsequent processes.

[0026] Specific embodiments of the present utility model are shown below.

[0027] The width of the transverse groove 5 is set to 0.2-10 mm, preferably 3 mm; the width of the longitudinal groove 6 is set to 0.2-10 mm, preferably 3 mm. The width of the transverse groove 5 and the longitudinal groove 6 should not be too wide or too narrow. If it is too wide, it is easy to cause the glass to be squeezed and broken during vacuum bonding. If it is too narrow, it will not achieve the desired technical effect.

[0028] The depth of the transverse groove 5 is set to 0.2-10 mm, preferably 1.5 mm; the depth of the longitudinal groove is set to 0.2-10 mm, preferably 1.5 mm.

[0029] The upper edges of both side walls of the transverse groove 5 and the longitudinal groove 6 are chamfered to avoid scratching the glass due to sharp corners.

[0030] The negative pressure holes 3 are arranged in a rectangular array, with several rows and columns, and the negative pressure holes 3 in each column are connected to the same negative pressure channel 4, which can reduce the number of negative pressure tubes that need to be connected. In this embodiment, the port of the negative pressure channel 4 is arranged on the side of the fixture body 1 (the front in the figure).

[0031] Steps 8 are provided at both ends of the upper surface of the fixture body 1 , and the steps 8 are lower than the table 2 ; a plurality of waist holes 9 are provided on the steps 8 , and the waist holes 9 are used to pass bolts to lock and fix the fixture body 1 in the vacuum equipment.

[0032] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A vacuum laminating jig for glass, comprising a jig body, wherein the upper surface of the jig body is configured as a table surface for fitting the glass, and a plurality of negative pressure holes are evenly arranged on the table surface, wherein the negative pressure holes are connected to a negative pressure channel provided on the surface of the jig body; characterized in that: A grid-like groove structure consisting of transverse grooves and longitudinal grooves is also provided on the table surface of the fixture body, and the negative pressure holes are located in the grids of the grid-like grooves.

2. The glass vacuum bonding jig according to claim 1, characterized in that: The width of the transverse groove is set to 1-10 mm, and the width of the longitudinal groove is set to 1-10 mm.

3. The glass vacuum bonding jig according to claim 2, characterized in that: The widths of the transverse grooves and the longitudinal grooves are both set to 3 mm.

4. The glass vacuum bonding jig according to claim 1, characterized in that: The depth of the transverse groove is set to 0.2-10 mm, and the depth of the longitudinal groove is set to 0.2-10 mm.

5. The glass vacuum bonding jig according to claim 4, characterized in that: The depths of the transverse grooves and the longitudinal grooves are both set to 1.5 mm.

6. The glass vacuum bonding jig according to claim 1, characterized in that: The upper edges of both side walls of the transverse groove and the longitudinal groove are chamfered.

7. The glass vacuum bonding jig according to claim 1, characterized in that: The negative pressure holes are arranged in a rectangular array; the negative pressure holes in each row are connected to the same negative pressure channel, or the negative pressure holes in each column are connected to the same negative pressure channel.

8. The glass vacuum bonding jig according to claim 1 or 7, characterized in that: The port of the negative pressure channel is arranged on the side of the fixture body.

9. The glass vacuum bonding jig according to claim 1, characterized in that: Steps are arranged at both ends of the upper surface of the fixture body, and the steps are lower than the table top; a plurality of waist holes are arranged on the steps, and the waist holes are used to cooperate with bolts to lock the fixture body.

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