CN216758577U - Auxiliary net stretching device - Google Patents

Abstract

The utility model discloses an auxiliary net tensioning device, which comprises: at least one pressing component which is of a 'return' type structure; the main lifting driving device is used for driving the pressing component to descend and ascend; the downward pressing probe group comprises a plurality of probes which are arranged along the vertical direction, and each probe is connected to the bottom of the downward pressing part along the 'return' structure of the downward pressing part; the secondary lifting device group is respectively provided with a secondary lifting driving device corresponding to each probe, and each secondary lifting driving device drives the corresponding probe to descend and ascend; and the pressure sensor group is respectively provided with a pressure sensor corresponding to each probe, and each pressure sensor is used for detecting the lower pressure degree of the corresponding probe. According to the utility model, the pressing component and the pressing probe group with the square-shaped structure are adopted for pressing, so that wrinkles and gaps can be eliminated, the metal mask strips and the mask plate can be completely attached, and the mesh welding yield and the welding spot firmness of the metal mask strips 8 are improved.

Description

Auxiliary net stretching device

Technical Field

The utility model relates to the technical field of OLED display, in particular to an auxiliary net tensioning device.

Background

The OLED display panel has advantages of thin thickness, low power consumption, flexibility, flexible display, etc., and has become a development trend of the next-generation panel display in recent years.

The existing OLED panel is characterized in that an evaporation source is utilized to heat and evaporate organic materials in a vacuum environment, the organic materials penetrate through a hole opening position on a metal mask plate, an organic thin film is formed on the surface of a substrate, the film forming position needs to be a specified light emitting position on the substrate, and the current of the substrate can be effectively transmitted to an OLED device to emit light, so that the metal mask plate needs to have higher position precision and stability, and needs to be tightly attached to the substrate, so that the organic materials are prevented from being evaporated to a wrong position, and a color mixing phenomenon is prevented.

In the manufacturing process of the OLED metal mask plate, the position precision is required to be high so as to ensure that the organic material can be accurately evaporated to a light emitting area on the substrate, and besides, the welding firmness is required to be confirmed, so that the deviation of the position precision caused by the low firmness after welding is avoided. As shown in fig. 1, however, in the process of screening the mask strip 01, since a plurality of tension mechanisms apply force to one side of the metal mask strip 01 together, since the number of the tension mechanisms is large and the force application positions are different, wrinkles 02 may be generated due to tension non-uniformity, and the wrinkles 02 may cause gaps between the mask strip 01 and the mask plate 04, which may seriously affect the welding yield and screening yield, and may cause welding spot detachment and position deviation in the manufacturing field or after use, in addition, the flatness of the metal mask plate 04 itself is also important, and a gap may be generated by a pit 03.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide an auxiliary mesh stretching device to improve the mesh stretching welding yield and the welding spot firmness of metal mask strips.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an auxiliary net tensioning device, comprising:

at least one pressing component which is of a 'return' type structure;

the main lifting driving device is used for driving the pressing component to descend and ascend;

the downward pressing probe group comprises a plurality of probes which are arranged along the vertical direction, and each probe is connected to the bottom of the downward pressing part along the 'return' structure of the downward pressing part;

the secondary lifting device group is respectively provided with a secondary lifting driving device corresponding to each probe, and each secondary lifting driving device drives the corresponding probe to descend and ascend;

and the pressure sensor group is provided with pressure sensors corresponding to the probes respectively, and each pressure sensor is used for detecting the lower pressure degree of the corresponding probe.

Furthermore, the pressing component is connected with the main lifting driving device through a connecting rod.

Furthermore, the main lifting driving device and the secondary lifting driving device are cylinders or electric push rods.

By adopting the technical scheme, the utility model has the following beneficial technical effects:

1. in a welding spot area, a pressing component with a 'return' type structure and a pressing probe group are adopted for pressing, so that wrinkles and gaps can be eliminated, the metal mask strips and the mask plate can be completely attached, and the mesh welding yield and the welding spot firmness of the metal mask strips are improved;

2. the utility model can solve the problem of wrinkles caused by uneven stress of the metal mask strip, reduce the risk of color mixing and improve the phenomenon of color mixing;

3. the utility model can solve the problem of clearance between the metal mask plate and the metal mask strip due to poor flatness of the metal mask plate.

Drawings

The utility model is described in further detail below with reference to the accompanying drawings and the detailed description;

FIG. 1 is a schematic illustration of the wrinkles and gaps created by a mask strip during the tentering process;

fig. 2 is a left side view of the auxiliary net stretching device of the present invention;

FIG. 3 is a top view of the auxiliary screen apparatus of the present invention;

FIG. 4 is a web spreading method using the auxiliary web spreading device of the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a schematic view of a plurality of hold-down members in a transverse combination;

FIG. 7 is a schematic view of a longitudinal assembly of a plurality of hold-down members;

fig. 8 is a schematic view of another embodiment of a longitudinal combination of a plurality of hold-down members.

Detailed Description

Referring to fig. 2-3, an auxiliary net tensioning device of the present invention includes:

the pressing part 4 is of a 'return' structure, and a middle welding spot area can be exposed by adopting the return structure, so that the welding of an upper laser device is facilitated;

the main lifting driving device 2 is used for driving the pressing component 4 to descend and ascend;

the pressing probe group comprises a plurality of probes 6 which are arranged along the vertical direction, and each probe 6 is connected to the bottom of the pressing part 4 along the 'return' type structure of the pressing part 4; the number of the probes 6 is not limited, and the arrangement is synchronous with the pressing component 4; the material of the probe 6 is not limited, the main body of the probe can be made of a material with strong rigidity, the service life is long, the probe part can be made of a soft material such as rubber, and the probe is not easy to damage when the metal mask strip 8 is pressed down;

a sub-lifting device group, which is provided with a sub-lifting driving device 5 corresponding to each probe 6, and each sub-lifting driving device 5 drives the corresponding probe 6 to descend and ascend;

the pressure sensor group 1 is provided with pressure sensors corresponding to each probe 6, and each pressure sensor is used for detecting the lower pressure degree of the corresponding probe 6.

The pressing part 4 is connected with the main lifting driving device 2 through a connecting rod, and the connecting rod is arranged to extend outwards on a horizontal plane, so that the laser device and the pressure sensor are prevented from generating interference on mechanism movement.

Wherein the main lifting driving device 2 and the secondary lifting driving device 5 can be air cylinders or electric push rods and the like.

The pressing part 4 of the utility model can be combined in a plurality of ways, as shown in fig. 6, a plurality of pressing parts 4 with a zigzag structure are combined transversely, and can be stacked in the horizontal direction aiming at the condition of a plurality of rows of welding points; as shown in fig. 7 to 8, a plurality of push-down members 4 of a clip structure are longitudinally combined, and the longitudinal direction may be stacked according to the width of the metal mask stripes 8 and the size of the solder joint area.

As shown in fig. 4 to 5, the web tensioning method using the auxiliary web tensioning device includes the following steps:

1) loading the metal mask plate 7, performing alignment action and confirming that the position precision meets the requirement;

2) loading the metal mask strips 8, performing alignment action and confirming that the position precision meets the requirement;

3) after the metal mask strips 8 are aligned, the tension mechanism keeps the current position, and the auxiliary net tensioning device is started;

4) lowering the press part 4 to above the welding area of the welding spot;

5) starting the pressing probe group, starting each probe 6 to descend, and pressing the metal mask strip 8 by the probe 6 and returning a pressure value;

6) confirming the current pressure value S by each pressure sensor: if S < F, continuing to adjust the descending value, and if S > F, adjusting the ascending value, wherein F = 5N;

7) circularly performing the steps 5) -6) until the current pressure value of each probe 6 is confirmed to reach S = F, and finishing the action of pressing down the probe set;

8) descending the laser device and starting welding;

9) after welding is finished, the laser device ascends and exits;

10) each probe 6 rises to the original point, and the pressure sensor confirms that the pressure value is zero;

11) the pressing component 4 rises to the original point to assist the net stretching device to stop acting;

12) and 8 meshes of the metal mask strips and welding are completed.

In the solder joint area, adopt the push down part 4 and the push down probe group of returning the type structure to push down, can eliminate fold and clearance, make metal mask strip 8 and mask plate can laminate completely, improve the mesh welding yield and the solder joint fastness of metal mask strip 8.

While the utility model has been described in connection with the above embodiments, it is to be understood that the utility model is not limited to the disclosed embodiments, which are illustrative and not restrictive, and that those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (3)

1. An auxiliary net tensioning device is characterized in that: it includes:

at least one pressing component which is of a 'return' type structure;

the main lifting driving device is used for driving the pressing component to descend and ascend;

the downward pressing probe group comprises a plurality of probes which are arranged along the vertical direction, and each probe is connected to the bottom of the downward pressing part along the 'return' structure of the downward pressing part;

the secondary lifting device group is respectively provided with a secondary lifting driving device corresponding to each probe, and each secondary lifting driving device drives the corresponding probe to descend and ascend;

and the pressure sensor group is provided with pressure sensors corresponding to the probes respectively, and each pressure sensor is used for detecting the lower pressure degree of the corresponding probe.

2. An auxiliary net tensioning device according to claim 1, wherein: the pressing component is connected with the main lifting driving device through a connecting rod.

3. An auxiliary net tensioning device according to claim 1, wherein: the main lifting driving device and the secondary lifting driving device are cylinders or electric push rods.

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