A clamping tool for bonding a touch glass and a metal mesh film

Abstract

The application discloses a clamping tool for attaching touch glass and a metal grid film, comprising a first clamping body and a second clamping body arranged symmetrically, wherein a first cavity and a second cavity are respectively formed in the center of the first clamping body and the second clamping body, and first glass and second glass to be attached are respectively covered on the first cavity and the second cavity, and a first roller and a second roller are respectively formed in the bottom of the first clamping body and the second clamping body. The application improves accuracy, realizes high-precision damage-free attachment, reduces product scrap rate, and improves production line processing efficiency.

Description

Technical Field

[0001] This application relates to clamping fixtures, and more particularly to a clamping fixture for bonding touch glass to a metal mesh film. Background Technology

[0002] Metal mesh touch sensors, with their advantages of low sheet resistance, high light transmittance, and bending resistance, are widely used in the bonding processes of automotive, industrial control, and laptop touch panels. Currently, the industry standard uses simple positioning blocks to clamp the glass and metal film, but existing tooling has several defects:

[0003] 1. Relying solely on rigid blocks for positioning, without negative pressure adsorption and buffer sealing structures, the flexible metal film is prone to stretching and wrinkling during clamping, causing the touch circuit to shift.

[0004] 2. The rigid metal limiter directly contacts the conductive metal mesh, which can easily scratch the copper traces when handling workpieces, resulting in high panel scrap costs.

[0005] 3. Ordinary tooling lacks a high-precision sealed negative pressure chamber, resulting in uneven bonding force, which can easily cause cracks and breakage of the thin touch glass under pressure;

[0006] 4. The positioning reference is singular, and the cumulative tolerance from repeated clamping is large, which cannot meet the high-precision alignment requirement of ±0.03mm;

[0007] 5. Poor versatility; changing specifications requires replacing the entire fixture, resulting in lengthy setup and debugging times and low production efficiency. Touchscreen glass and metal mesh sensors are expensive, and defective traditional tooling leads to significant scrap losses. Therefore, a high-precision negative pressure sealing clamping fixture is urgently needed to address these shortcomings. Summary of the Invention

[0008] The purpose of this invention is to provide a clamping fixture for bonding touch glass and metal mesh film, which improves accuracy, achieves high-precision non-destructive bonding, reduces product scrap rate, and improves production line processing efficiency.

[0009] To achieve the above objectives, the present invention provides the following technical solution.

[0010] This application discloses a clamping fixture for bonding touch glass to a metal mesh film, comprising a first clamping body and a second clamping body symmetrically arranged. A first cavity and a second cavity are respectively formed at the center of the first clamping body and the second clamping body. A first glass and a second glass to be bonded cover the first cavity and the second cavity, respectively. A first roller and a second roller are respectively formed at the bottom of the first clamping body and the second clamping body.

[0011] In use, the first clamping body and the second clamping body respectively clamp the first glass and the second glass, and after sliding symmetrically into the exposure equipment through the first roller and the second roller, the first glass and the second glass are symmetrically attached to both sides of the metal mesh film.

[0012] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, the first clamping body is bonded to the outer periphery of the first glass to form a first sealing ring, the second clamping body is bonded to the outer periphery of the second glass to form a second sealing ring, and a plurality of first negative pressure holes are respectively arranged on the first sealing ring and the second sealing ring.

[0013] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, the outer periphery of the first glass and the second glass are respectively formed with chamfered edges, and the first clamping body and the second clamping body are respectively arranged with a plurality of pressure claws pressing down the chamfered edges.

[0014] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, the pressure claws are symmetrically arranged on the outer periphery of the first glass and the second glass, and the height of the top surface of the pressure claws is lower than the height of the first glass / second glass.

[0015] Preferably, in the above-mentioned clamping fixture for bonding touch glass to a metal mesh film, the pressure claw is movably mounted on the first clamping body / second clamping body and fixed by bolts.

[0016] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, a first outer sealing ring and a second outer sealing ring are respectively formed on the outside of the first cavity of the first clamping body and on the outside of the second cavity of the second clamping body. An annular elastic sealing gasket is formed on the second outer sealing ring. In use, the first outer sealing ring is pressed against the annular elastic sealing gasket on the second outer sealing ring.

[0017] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, the first clamping body and the second clamping body are respectively provided with a plurality of second negative pressure holes, which are located between the first outer sealing ring and the first cavity / between the second outer sealing ring and the second cavity.

[0018] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, the top and bottom of the first clamping body and the second clamping body are respectively formed with positioning blocks, the top of the first clamping body and the second clamping body are respectively formed with first positioning rollers, and one side of the first clamping body and the second clamping body are respectively formed with second positioning rollers.

[0019] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, handles are provided on both sides of the first clamping body and the second clamping body.

[0020] Preferably, in the above-mentioned clamping fixture for bonding touch glass and metal mesh film, negative pressure adsorption plates are formed on the same side of the first clamping body and the second clamping body, and negative pressure adsorption holes on the negative pressure adsorption plates are connected to negative pressure holes through pipes. Covers are respectively installed on the back of the first clamping body and the second clamping body, and the pipes are disposed inside the cover.

[0021] Compared with existing technologies, the advantages of this technical solution are:

[0022] 1. The sealing components work together with negative pressure adsorption, the workpiece is subjected to uniform force, the touch glass is not easily crushed by pressure, and the metal film is adsorbed smoothly;

[0023] 2. The annular elastic sealing gasket serves as a buffer contact surface, preventing the pressure claws from directly contacting the conductive mesh, thus eliminating scratches and scrapping of the circuit and significantly reducing production costs;

[0024] 3. The sliding gripper can quickly adapt to multiple specifications of touch panels without the need to change the entire tooling, thus shortening the changeover time on the production line;

[0025] 4. The clamping body is made of aluminum alloy base plate with high precision machining, flatness ≤0.1mm, sealing flatness ≤0.05mm, small repetitive clamping alignment tolerance, meeting the high precision bonding process;

[0026] 5. The split-type two-sided light leakage device has a symmetrical structure and works with negative pressure to complete positioning and bonding in one integrated process, resulting in high process integration and improved bonding efficiency;

[0027] 6. Aluminum alloy black anodizing and carbon steel blackening treatment make tooling rust-proof, wear-resistant, and with a longer service life. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 The diagram shown is an exploded view of the clamping fixture used for bonding touch glass and metal mesh film in an embodiment of the present invention.

[0030] Figure 2The diagram shown is a split view of the clamping fixture for bonding touch glass and metal mesh film in an embodiment of the present invention after removing the first glass and the second glass.

[0031] Figure 3 As shown Figure 1 Enlarged view at point B in the middle;

[0032] Figure 4 As shown Figure 2 Enlarged view of point A in the middle;

[0033] Figure 5 The image shown is a split view from another perspective of the clamping fixture used for bonding touch glass and metal mesh film in an embodiment of the present invention, after removing the first glass and the second glass.

[0034] Figure 6 The diagram shown is a schematic diagram of the clamping fixture used for bonding touch glass and metal mesh film in an embodiment of the present invention. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Combination Figure 1-6 As shown, the clamping fixture 100 for bonding touch glass to a metal mesh film includes a first clamping body 101 and a second clamping body 102 symmetrically arranged. A first cavity 103 and a second cavity 104 are respectively formed at the center of the first clamping body 101 and the second clamping body 102. A first glass 105 and a second glass 106 to be bonded cover the first cavity 103 and the second cavity 104, respectively. A first roller 107 and a second roller 108 are respectively formed at the bottom of the first clamping body 101 and the second clamping body 102.

[0037] In use, the first clamping body 101 and the second clamping body 102 respectively clamp the first glass 105 and the second glass 106, and after sliding symmetrically into the exposure equipment through the first roller 107 and the second roller 108, the first glass 105 and the second glass 106 are symmetrically attached to both sides of the metal mesh film.

[0038] In this embodiment, two symmetrically arranged clamping bodies are used to clamp the two glass pieces to be bonded. After clamping, they slide into the exposure device, where the exposure device has corresponding grooves to limit the sliding of the two rollers. After sliding into place, the two clamping bodies are bonded together, thus achieving the bonding of the two glass pieces to be bonded to both sides of the film with high precision and strong reliability.

[0039] Furthermore, the first clamping body 101 is attached to the outer periphery of the first glass 105 to form a first sealing ring 109, and the second clamping body 102 is attached to the outer periphery of the second glass 106 to form a second sealing ring 110. A plurality of first negative pressure holes 111 are respectively arranged on the first sealing ring 109 and the second sealing ring 110.

[0040] In this embodiment, the first glass is attached to the sealing ring. While being accurately positioned, the glass to be attached is firmly adsorbed onto the clamping body through negative pressure adsorption, resulting in high reliability.

[0041] Furthermore, the outer peripheries of the first glass 105 and the second glass 106 are respectively formed with chamfered edges 112, and the first clamping body 101 and the second clamping body 102 are respectively arranged with multiple pressure claws 113 to press against the chamfered edges 112. The pressure claws 113 are symmetrically arranged on the outer peripheries of the first glass 105 and the second glass 106, and the height of the top surface of the pressure claws 113 is lower than the height of the first glass 105 / second glass 106. The pressure claws 113 are movably mounted on the first clamping body 101 / second clamping body 102 and fixed by bolts 114.

[0042] In this embodiment, the sliding gripper can quickly adapt to multiple specifications of touch panels without the need to change the entire tooling, thus shortening the changeover time on the production line; the gripper does not directly contact the conductive grid, eliminating scratches and scrapping of the circuit, and significantly reducing production costs.

[0043] Furthermore, a first outer sealing ring 115 and a second outer sealing ring 116 are respectively formed on the outer side of the first cavity 103 of the first clamping body 101 and on the outer side of the second cavity 104 of the second clamping body 102. An annular elastic sealing gasket 117 is formed on the second outer sealing ring 116. In use, the first outer sealing ring 115 is pressed against the annular elastic sealing gasket 117 on the second outer sealing ring 116. A plurality of second negative pressure holes 118 are respectively formed on the first clamping body 101 and the second clamping body 102. The second negative pressure holes 118 are located between the first outer sealing ring 115 and the first cavity 103 / between the second outer sealing ring 116 and the second cavity 104.

[0044] In this embodiment, the annular elastic sealing gasket serves as a buffer contact surface. When the two glass panels are bonded together, they slowly come into contact through the elastic sealing gasket, preventing damage that may be caused by hard contact. At the same time, the sealing component works in conjunction with negative pressure adsorption, so the workpiece is subjected to uniform force, the touch glass is not easily crushed by pressure, and the metal film is adsorbed smoothly.

[0045] Furthermore, positioning blocks 119 are formed at the top and bottom of the first clamping body 101 and the second clamping body 102, a first positioning roller 120 is formed at the top of the first clamping body 101 and the second clamping body 102, and a second positioning roller 121 is formed on one side of the first clamping body 101 and the second clamping body 102.

[0046] In this embodiment, the precision of the fit between the two clamping bodies is ensured.

[0047] Furthermore, handles 122 are provided on both sides of the first clamping body 101 and the second clamping body 102 respectively.

[0048] In this embodiment, it is convenient to pull out before or after application.

[0049] Furthermore, negative pressure adsorption plates 123 are formed on the same side of the first clamping body 101 and the second clamping body 102, respectively. The negative pressure adsorption holes 124 on the negative pressure adsorption plates 123 are connected to the first negative pressure hole 111 and the second negative pressure hole 118 through pipelines. Covers 125 are respectively installed on the back of the first clamping body 101 and the second clamping body 102, and pipelines are arranged inside the cover 125.

[0050] In this embodiment, the negative pressure adsorption plate is connected to a negative pressure device to achieve adsorption through two negative pressure holes. The negative pressure holes are connected to the negative pressure adsorption holes via pipelines, which are hidden inside the casing for a more aesthetically pleasing appearance and to prevent misalignment. Additionally, multiple fixing blocks around the two clamping bodies can apply force to the clamping bodies for easy fitting.

[0051] In summary, this technical solution comprises two symmetrical double-sided light leakage devices. Each device uses a high-precision aluminum alloy base plate as its foundation, coupled with a sliding multi-directional pressure claw slider and double-layered, highly flexible seals, forming a sealed negative pressure adsorption chamber after mold closing. CNC precision machining ensures the planar accuracy of the base plate and seals; the adjustable pressure claws adapt to various touch panel specifications; the double-layered flexible sealing buffer structure prevents scratches on the conductive lines of the metal mesh; uniform negative pressure adsorption prevents glass cracking and film wrinkling, significantly reducing the touch panel scrap rate; and it facilitates easy changeover and debugging. It effectively improves the processing accuracy and production efficiency of the metal mesh sensor-glass bonding process, and is suitable for assembling various metal mesh touch panels for automotive, industrial control, and laptop applications.

[0052] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A clamping fixture for bonding touch glass to a metal mesh film, characterized in that, The device includes a first clamping body and a second clamping body arranged symmetrically. A first cavity and a second cavity are respectively formed at the center of the first clamping body and the second clamping body. A first glass and a second glass to be bonded cover the first cavity and the second cavity, respectively. A first roller and a second roller are respectively formed at the bottom of the first clamping body and the second clamping body. In use, the first clamping body and the second clamping body respectively clamp the first glass and the second glass, and after sliding symmetrically into the exposure equipment through the first roller and the second roller, the first glass and the second glass are symmetrically attached to both sides of the metal mesh film.

2. The clamping fixture for bonding touch glass and metal mesh film according to claim 1, characterized in that, The first clamping body is attached to the outer periphery of the first glass to form a first sealing ring, and the second clamping body is attached to the outer periphery of the second glass to form a second sealing ring. Multiple first negative pressure holes are respectively arranged on the first sealing ring and the second sealing ring.

3. The clamping fixture for bonding touch glass and metal mesh film according to claim 1, characterized in that, The outer periphery of the first glass and the second glass are respectively formed with a chamfered edge, and the first clamping body and the second clamping body are respectively arranged with a plurality of pressure claws that press down the chamfered edge.

4. The clamping fixture for bonding touch glass and metal mesh film according to claim 3, characterized in that, The pressure claws are symmetrically arranged on the outer periphery of the first glass and the second glass, and the top surface of the pressure claws is lower than the height of the first glass / second glass.

5. The clamping fixture for bonding touch glass and metal mesh film according to claim 3, characterized in that, The pressure claw is movably mounted on the first clamping body / second clamping body and fixed by bolts.

6. The clamping fixture for bonding touch glass and metal mesh film according to claim 1, characterized in that, The first clamping body has a first outer sealing ring and a second outer sealing ring formed on the outside of the first cavity and the second clamping body has a second outer sealing ring formed on the outside of the second cavity, respectively. An annular elastic sealing gasket is formed on the second outer sealing ring. In use, the first outer sealing ring is pressed against the annular elastic sealing gasket on the second outer sealing ring.

7. The clamping fixture for bonding touch glass and metal mesh film according to claim 6, characterized in that, The first clamping body and the second clamping body are respectively formed with a plurality of second negative pressure holes, which are located between the first outer sealing ring and the first cavity / between the second outer sealing ring and the second cavity.

8. The clamping fixture for bonding touch glass and metal mesh film according to claim 1, characterized in that, The first clamping body and the second clamping body each have a positioning block formed at their top and bottom, a first positioning roller formed at the top of the first clamping body and the second clamping body, and a second positioning roller formed on one side of the first clamping body and the second clamping body.

9. The clamping fixture for bonding touch glass and metal mesh film according to claim 1, characterized in that, Handles are provided on both sides of the first clamping body and the second clamping body.

10. The clamping fixture for bonding touch glass and metal mesh film according to claim 1, characterized in that, The first clamping body and the second clamping body are respectively formed on the same side. The negative pressure adsorption holes on the negative pressure adsorption plates are connected to the negative pressure holes through pipes. The back of the first clamping body and the second clamping body are respectively installed with covers, and the pipes are arranged inside the covers.

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