A sealing rod for a degassing machine

Abstract

This utility model discloses a sealing rod for a degassing machine, comprising a sealing rod base and a rectangular sealing gasket. The sealing rod base has a rectangular groove, and the back of the rectangular sealing gasket has an adhesive layer. The rectangular sealing gasket is embedded and adhered to the groove through the adhesive layer. This sealing rod for a degassing machine has good sealing performance, a simple structure, short assembly and disassembly time, and high maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology for degassing machines, and in particular to a sealing rod for a degassing machine. Background Technology

[0002] In automated polarizer bonding lines, debubbling machines are used in the debubbling process of LCD panels. Existing technology employs a sealing rod structure to achieve cavity sealing. Specifically, the sealing rod incorporates an elastic expansion mechanism. Axial expansion drives the rod to expand radially, creating a seal between the silicone sealing strip and the LCD panel's inlet / outlet. The sealing rod body is composed of a metal substrate and an embedded silicone sealing strip. The silicone strip uses a circular layout, and in its expanded state, it undergoes extrusion deformation against the inlet / outlet edges, forming a locally high-pressure sealing interface. Further pressure is then applied to the internal LCD panel to perform the debubbling process.

[0003] The core bottleneck in achieving effective process pressure for current degassing machines lies in the insufficient sealing performance of the sealing rod and the panel inlet / outlet. Specifically, this deficiency manifests in the following three aspects: 1. Limited effective contact area of ​​the sealing surface: Existing sealing rods rely on a structure where a single silicone sealing strip is embedded in a groove in the metal substrate. The contact area between the outer surface of the sealing ring and the inlet / outlet of the LCD panel is concentrated only on the top of the annular convex surface, and the actual effective contact area is less than 30% of the total sealing surface. The narrow line contact mode leads to uneven distribution of contact stress, making it difficult to maintain a stable sealing interface under high pressure conditions, which can easily cause local leakage or pressure fluctuations. 2. Defects in silicone material performance: The sealing rod needs to undergo axial compression (expansion) and reset (contraction) deformation process in each working cycle. The outer surface of the silicone ring forms a line contact friction interface with the inlet and outlet of the LCD panel, resulting in a local friction coefficient as high as 0.8~1.2. Under periodic stress, it accelerates surface wear, material fatigue cracking and abrasive grain shedding, resulting in a short service life. 3. High maintenance costs: such as Figure 3 As shown in Figure A, traditional silicone sealing rings require an average replacement frequency of 5 to 7 times per year under high-pressure conditions, with each replacement taking ≥30 minutes and requiring the machine to be stopped to disassemble the sealing rod assembly. Utility Model Content

[0004] Objective: In order to overcome the shortcomings of the existing technology, this utility model provides a sealing rod for a degassing machine, which improves the sealing performance in the degassing process of LCD panels, increases maintenance efficiency, and reduces maintenance costs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a sealing rod for a degassing machine, including a sealing rod base and a sealing gasket; the sealing rod base has a rectangular groove, and the back of the sealing gasket is provided with an adhesive layer, and the sealing gasket is embedded and adhered to the groove through the adhesive layer.

[0007] The rectangular sealing gasket is embedded and adhered to the groove through the adhesive backing layer. The rectangular sealing gasket and the groove are fitted with a gap, making assembly and disassembly convenient.

[0008] In some embodiments, the sealing gasket has a planar rectangular structure and is made of fluororubber.

[0009] Fluororubber has a Shore hardness of 65-70 HA and an Akron abrasion loss ≤0.3 cm. 3 / 1.6km. Traditional sealing gaskets are made of silicone, which has a dynamic friction coefficient of 0.8-1.2, while fluororubber has a dynamic friction coefficient of 0.3-0.5, improving wear resistance by at least 3 times.

[0010] In some embodiments, the adhesive backing layer includes an acrylic foam substrate with a compression ratio ≥30%.

[0011] In some embodiments, the adhesive backing layer is 3M 9448A tape.

[0012] In some embodiments, after the sealing gasket is embedded in the groove, the effective sealing area formed by the sealing gasket and the inlet and outlet of the degassing machine accounts for 95%-98% of the entire circumference of the rectangular sealing gasket.

[0013] In some embodiments, the ratio of groove depth to gasket thickness is 1:1.1-1.5.

[0014] In some embodiments, the width ratio of the groove to the sealing rod base is 0.7-0.8, and the length ratio is 0.85-0.95.

[0015] In some embodiments, the sealing rod base material is aluminum alloy.

[0016] Beneficial effects: The degassing machine sealing rod provided by this utility model adopts a rectangular sealing gasket. After being embedded in the sealing rod base, it increases the contact area between the sealing gasket and the inlet and outlet of the LCD panel, and maintains a stable sealing interface under high pressure conditions. The sealing gasket is made of fluororubber, which has high wear resistance. The sealing gasket is vertically embedded in the groove, which shortens the disassembly and assembly time and improves maintenance efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure 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 of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is an exploded view of the sealing rod of the degassing machine in an embodiment of this utility model.

[0019] Figure 2 This is a top view of the sealing rod of the degassing machine in an embodiment of this utility model.

[0020] Figure 3 The diagram shows a comparison of the maintenance operation process of the existing degassing machine sealing rod and the degassing machine sealing rod provided in this embodiment of the present invention; Figure A is a schematic diagram of the maintenance operation process of the existing degassing machine sealing rod, and Figure B is a schematic diagram of the maintenance operation process of the degassing machine sealing rod provided in this embodiment of the present invention.

[0021] In the diagram: 1. Sealing rod base, 2. Groove, 3. Sealing gasket. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may include different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] Example 1:

[0025] This embodiment provides a sealing rod for a degassing machine, such as... Figure 1 , Figure 2 As shown, it includes a sealing rod base 1 and a sealing gasket 3.

[0026] The sealing rod base 1 is made of aluminum alloy. A rectangular groove 2 is formed in the sealing rod base 1. The groove 2 is 1004 mm long, 24 mm wide, and 2.5 mm deep.

[0027] Sealing gasket 3 has a planar rectangular structure, is made of fluororubber, has a thickness of 3 mm, a Shore hardness of 65~70 HA, and an Akron abrasion loss ≤0.3 cm. 3 / 1.6km, the coefficient of dynamic friction of fluororubber is 0.3~0.5. The new sealing gasket is fitted with a release film.

[0028] Furthermore, the back of the sealing gasket 3 is provided with a 3M 9448A double-sided adhesive layer. The sealing gasket 3 is embedded and adhered to the groove 2 through the adhesive layer. The effective sealing area formed by the sealing gasket 3 and the inlet and outlet of the degassing machine accounts for 95% of the entire circumference of the sealing gasket 3.

[0029] Example 2:

[0030] This embodiment, based on Embodiment 1, provides a maintenance method for the sealing rod of the degassing machine as described in Embodiment 1. Figure 3 As shown in B, it includes: Removing the old gasket: Use a plastic pry bar to cut into the edge of groove 2 and peel off the old gasket, applying a force ≤15 N / cm; Clean the groove: Wipe the bottom surface of groove 2 with anhydrous ethanol until the residual adhesive is ≤0.2 g / dm. 2 ; Install the new gasket: Remove the release film from the gasket, align it with the groove, and apply light pressure (≤5 N / cm). 2 .

[0031] When maintaining a traditional sealing rod, it is necessary to first cut the silicone strip, apply grease, and then use a rubber hammer to tap and press it into the annular groove of the sealing rod, which usually takes more than half an hour each time.

[0032] The overall maintenance time for the degassing machine sealing rod provided in this embodiment is ≤5 min.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this utility model and for simplifying the description, and are not intended to 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.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A defoaming machine seal rod characterized by, It includes a sealing rod base and a sealing gasket; the sealing rod base has a rectangular groove, and the back of the sealing gasket is provided with an adhesive layer, and the sealing gasket is embedded and adhered to the groove through the adhesive layer.

2. The defoaming machine seal rod of claim 1, wherein, The sealing gasket has a planar rectangular structure and is made of fluororubber.

3. The defoaming machine seal rod of claim 1, wherein, The adhesive backing layer includes an acrylic foam substrate with a compression ratio of ≥30%.

4. The defoaming machine seal rod of claim 3, wherein, The adhesive backing is 3M 9448A tape.

5. The defoaming machine seal rod of claim 2, wherein, After the sealing gasket is embedded in the groove, the effective sealing area formed by the sealing gasket and the inlet and outlet of the product to be degassed in the degassing machine accounts for 95%-98% of the entire circumference of the rectangular sealing gasket.

6. The defoaming machine seal rod of claim 2, wherein, The ratio of groove depth to gasket thickness is 1:1.1-1.

5.

7. The sealing rod of the degassing machine according to claim 1, characterized in that, The width ratio of the groove to the sealing rod base is 0.7-0.8, and the length ratio is 0.85-0.

95.

8. The sealing rod of the degassing machine according to claim 1, characterized in that, The base material of the sealing rod is aluminum alloy.

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