CN109540668B - Tension applying device and method for determining resistance of mask strip - Google Patents
Tension applying device and method for determining resistance of mask strip Download PDFInfo
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- CN109540668B CN109540668B CN201811397276.2A CN201811397276A CN109540668B CN 109540668 B CN109540668 B CN 109540668B CN 201811397276 A CN201811397276 A CN 201811397276A CN 109540668 B CN109540668 B CN 109540668B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention discloses a tension applying device and a method for determining resistance of a mask strip, and relates to the technical field of display. The tension applying device includes: the elastic stretching part and the tension adjusting part are connected between the first connecting part and the second connecting part. The two connecting parts can be connected with the two rims of the mask plate frame, and the tension adjusting part can adjust the distance between the two connecting parts, so that the tension between the two rims of the mask plate frame can be adjusted. The tension applying device provided by the embodiment of the invention can simulate the stress condition of the mask strip between the two frame edges of the mask plate frame, and is convenient for predicting the deformation of the mask plate frame after the mask strip is welded, so that the relevant parameters of the mask strip in the welding process can be adjusted according to the deformation, the mask strip is prevented from being damaged and deformed in the welding process, and the evaporation effect of the organic light-emitting material is ensured.
Description
Technical Field
The invention relates to the technical field of display, in particular to a tension applying device and a method for determining resistance of a mask strip.
Background
In the process of manufacturing an Organic Light-Emitting Diode (OLED) display panel, a mask plate is required to be used to evaporate an Organic Light-Emitting material onto a display substrate by an evaporation method.
In the related art, a mask generally includes a mask frame, and mask stripes welded on the mask frame. The pattern formed on the mask plate by the mask strip can enable the organic light-emitting materials with different colors to be evaporated on the specified position.
However, when the mask strips are welded to the mask frame, the mask strips are easily damaged and deformed by the tensile force of the mask frame, which affects the evaporation effect of the organic light-emitting material.
Disclosure of Invention
The invention provides a tension applying device and a method for determining the resistance of a mask strip, which can solve the problem that the mask strip is easy to damage and deform in the related art. The technical scheme is as follows:
in one aspect, there is provided a tensile force applying apparatus including: the elastic stretching part and the tension adjusting part are connected between the first connecting part and the second connecting part;
the first connecting part is used for being connected with one frame edge of a mask plate frame, and the second connecting part is used for being connected with the other frame edge of the mask plate frame;
the tension adjusting part is used for adjusting the distance between the first connecting part and the second connecting part.
Optionally, the pulling force applying device further includes: a tension measuring part connected between the first connection part and the second connection part;
the tension measuring part is used for measuring tension between the first connecting part and the second connecting part.
Optionally, the pulling force applying device includes: two of the elastic stretching portions;
the first connecting portion is connected to one of the elastically stretchable portions, and the second connecting portion is connected to the other of the elastically stretchable portions;
the tension adjusting part is arranged between the two elastic stretching parts.
Optionally, the pulling force applying device includes: two tension measuring parts;
one of the tension measuring sections is provided between one of the elastic stretching sections and the tension adjusting section, and the other tension measuring section is provided between the other of the elastic stretching sections and the tension adjusting section;
each tension measuring portion is used for measuring tension between the first connecting portion and the second connecting portion.
Optionally, the pulling force applying device further includes: a tension display unit;
the tension display part is connected with the tension measuring part and used for displaying the tension detected by the tension measuring part.
Optionally, the tension adjusting part includes: the gear, the first rack and the second rack;
the axis of the gear is perpendicular to the connecting line direction of the first connecting part and the second connecting part, and the length direction of each rack is parallel to the connecting line direction;
one end of the first rack is meshed with the gear, and the other end of the first rack is connected with the first connecting part;
one end of the second rack is meshed with the gear, and the other end of the second rack is connected with the second connecting part.
Optionally, the pulling force applying device further includes: a fixing plate;
the fixing plate is provided with a first through hole, a first rack groove and a second rack groove, the first rack is arranged in the first rack groove, the second rack is arranged in the second rack groove, and the length direction of each rack groove is parallel to the wiring direction;
the through hole and the gear are coaxial, and the gear shaft of the gear is arranged in the first through hole.
Optionally, the tension adjusting part further includes: a fixing member;
the fixing piece with the gear can be dismantled and be connected, just the fixing piece with during gear connection, be used for the restriction the gear rotates.
Optionally, the pulling force applying device further includes: a fixing plate; the fixing member includes: a third rack and a connecting piece;
a third rack groove is formed in the fixing plate, the third rack is arranged in the third rack groove, the length direction of the third rack is perpendicular to the wiring direction, and the length direction of the third rack groove is parallel to the wiring direction;
the third rack is slidably coupled to the third rack groove, and is engaged with the gear when the third rack slides to one end of the third rack groove, and is disengaged from the gear when the third rack slides to the other end of the third rack groove;
and the connecting piece is respectively connected with the fixing plate and the third rack and is used for fixing the third rack in the third rack groove.
In another aspect, there is provided a method of determining a resistance force of a mask strip, which is applied to the tension applying apparatus according to the above aspect, the method including:
connecting the tension applying device with a mask plate frame of a mask plate;
adjusting a tension adjusting part of the tension applying device to adjust the tension applied by the tension applying device to a preset tension value;
measuring a first deformation amount of the mask plate frame;
the tensile force applying device is disconnected with the mask plate frame, and the counter force applying device is connected with the mask plate frame;
adjusting the acting force applied by the counter force applying device and measuring a second deformation of the mask plate frame;
determining the force applied by the counter force applying device as the resisting force of the mask strip when the second deformation amount is the same as the first deformation amount.
The technical scheme provided by the invention has the beneficial effects that at least:
the embodiment of the invention provides a tension applying device and a method for determining the resistance of a mask strip, wherein the tension applying device comprises: the elastic stretching part and the tension adjusting part are connected between the first connecting part and the second connecting part. The two connecting parts can be connected with the two rims of the mask plate frame, and the tension adjusting part can adjust the distance between the two connecting parts, so that the tension between the two rims of the mask plate frame can be adjusted. The tension applying device provided by the embodiment of the invention can simulate the stress condition of the mask strip between the two frame edges of the mask plate frame, and is convenient for predicting the deformation of the mask plate frame after the mask strip is welded, so that the relevant parameters of the mask strip in the welding process can be adjusted according to the deformation, the mask strip is prevented from being damaged and deformed in the welding process, and the evaporation effect of the organic light-emitting material is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a mask manufacturing process according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a tension applying apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another tension applying device provided in the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another tension applying device provided by an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a fixing plate according to an embodiment of the present invention;
fig. 9 is a flowchart of a method for determining a resistance of a mask stripe according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a flowchart of a mask manufacturing process according to an embodiment of the present invention. The Mask may be a Fine Metal Mask (FMM). Referring to fig. 1, when manufacturing a mask plate, a masking strip (cover)002 may be welded on a mask plate frame 001, a support strip (howling)003 may be welded on the mask plate frame 001 to which the masking strip 002 is welded, an alignment strip (align)004 may be welded on the mask plate frame 001 to which the support strip 003 is welded, and finally, a mask strip 005 may be welded on the mask plate frame 001. The mask frame 001 may be a metal frame, and the mask strips 005 may be metal mask strips. However, when the mask bars 005 are welded to the mask frame 001, the mask bars 005 are easily damaged and deformed by the tensile force of the mask frame 001. Therefore, before welding the mask strips 005, a force, which is equal to and opposite to the force applied by the mask frame 001 to the mask strips 005, may be applied to the mask frame 001 by a Counter Force (CF) applying device (also referred to as a resistance force applying device). This makes it possible to prevent the mask strip 005 from being damaged and deformed during welding.
In the related art, the magnitude of the force applied by the counter force applying device to the mask frame (i.e., the resistance of the mask strip) can be generally determined according to the predetermined tension value that the mask strip can bear. However, the mode of applying the acting force to the mask plate frame by the counter force applying device is different from the mode of applying the acting force to the mask strip by the mask plate frame, so that the accuracy of the resistance of the mask strip determined directly according to the tension value which can be borne by the mask strip is low.
Fig. 2 is a schematic structural diagram of a tension applying device according to an embodiment of the present invention. As can be seen with reference to fig. 2, the tensile force applying means may include: a first connecting part 101, a second connecting part 102, and an elastic stretching part 103 and a tension adjusting part 104 connected between the first connecting part 101 and the second connecting part 102.
As can be seen from fig. 2, the elastic stretching portion 103 and the tension adjusting portion 104 may be connected in sequence. For example, the elastic stretching portion 103 may be connected to the first connecting portion 101, and the tension adjusting portion 104 may be connected to the second connecting portion 102. Of course, the order of connection of the elastic stretching portion 103 and the tension adjusting portion 104 may be adjusted, and for example, the elastic stretching portion 103 may be connected to the first connecting portion 101, or the tension adjusting portion 104 may be connected to the first connecting portion 101. The connection order of the elastic stretching portion 103 and the tension adjusting portion 104 is not limited in the embodiment of the present invention.
The first connection portion 101 may be used to connect with one frame edge of a mask frame, and the second connection portion 102 may be used to connect with another frame edge of the mask frame. The two frame edges connected by the two connecting parts can be two opposite frame edges in the mask plate frame, and the two frame edges are used for welding the mask strips. For example, the mask frame may be a rectangular frame, and the two frame edges connected by the two connecting portions may be two frame edges parallel to each other in the rectangular frame.
The tension adjusting part 104 can be used to adjust the distance between the first connecting part 101 and the second connecting part 102, so as to adjust the tension applied to the mask frame by the tension applying device.
When the tension applying device provided by the embodiment of the invention is adopted to manufacture the mask, the stress condition of the mask strip between the two frame edges of the mask frame can be simulated, and the deformation quantity of the mask frame after the mask strip is welded can be conveniently predicted, so that the related parameters of the mask strip in the welding process can be adjusted according to the deformation quantity, the mask strip is prevented from being damaged and deformed in the welding process, and the evaporation effect of the organic light-emitting material is ensured.
For example, a predetermined amount of tension that the mask strip can withstand without damaging the deformation may be determined. The tension applying device can then be connected to the two rims of the mask blank frame for welding the mask strips, and the tension applied by the tension applying device to the mask blank frame can be adjusted to the predetermined tension value. Thereafter, a first amount of deformation of the mask frame may be measured. Subsequently, the pulling force applying means may be disconnected from the mask frame, and the reaction force applying means may be connected to the mask frame. Adjusting the acting force applied by the counterforce applying device, and measuring a second deformation of the mask plate frame. When the second deformation amount is the same as the first deformation amount, the acting force applied by the counter force applying device is determined as the resistance force of the mask strip, so that the accuracy of the determined resistance force of the mask strip can be effectively improved.
In summary, an embodiment of the present invention provides a tension applying apparatus, including: the elastic stretching part and the tension adjusting part are connected between the first connecting part and the second connecting part. The two connecting parts can be connected with the two rims of the mask plate frame, and the tension adjusting part can adjust the distance between the two connecting parts, so that the tension between the two rims of the mask plate frame can be adjusted. The tension applying device provided by the embodiment of the invention can simulate the stress condition of the mask strip between the two frame edges of the mask plate frame, and is convenient for predicting the deformation of the mask plate frame after the mask strip is welded, so that the relevant parameters of the mask strip in the welding process can be adjusted according to the deformation, the mask strip is prevented from being damaged and deformed in the welding process, and the evaporation effect of the organic light-emitting material is ensured. For example, the deformation amount of the mask frame under the action of the tension applying device can be applied to the determination process of the resistance of the mask strip, so that the accuracy of the determined resistance of the mask strip can be effectively improved.
Alternatively, the elastic stretching portion 103 may be a spring, a bellows, or an elastic cord (e.g., a rubber band), and the implementation form of the elastic stretching portion 103 is not limited in the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention. As can be seen with reference to fig. 3, the tensile force applying means may further include: a tension measuring part 105, wherein the tension measuring part 105 can be used for measuring the tension between the first connecting part 101 and the second connecting part 102.
Alternatively, the tension measuring part 105 may be a tension sensor.
Fig. 4 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention. As can be seen with reference to fig. 4, the tensile force applying means may include: two elastic stretching portions 103. The first connection portion 101 may be connected to one elastic stretching portion 103, and the second connection portion 102 may be connected to the other elastic stretching portion 103. The tension adjusting part 104 may be disposed between the two elastic stretching parts 103.
By symmetrically arranging the two elastic stretching parts 103 on two sides of the tension adjusting part 104, the tension adjusting part 104 can be ensured to have a larger adjusting range and higher adjusting flexibility so as to be suitable for mask plate frames with different sizes.
For example, referring to fig. 4, the tension measuring part 105 may be connected to one elastic stretching part 103 and the tension adjusting part 104, respectively, that is, the tension measuring part 105 may be disposed between one elastic stretching part 103 and the tension adjusting part 104, and the elastic stretching part 103 may be disposed between the tension measuring part 105 and the first connecting part 101. Of course, the elastic stretching portion 103 may be provided between the tension measuring portion 105 and the tension adjusting portion 104, and the tension measuring portion may be provided between the elastic stretching portion 103 and the first connecting portion 101. The connection order of the elastic stretching portion 103, the tension adjusting portion 104 and the tension measuring portion 105 is not limited in the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention. As can be seen with reference to fig. 5, the tensile force applying means may include: two tension measuring parts 105. Among them, one tension measuring part 105 may be disposed between the first connecting part 101 and the tension adjusting part 104, and the other tension measuring part 105 may be disposed between the second connecting part 102 and the tension adjusting part 104.
The tension applying device is a symmetrical structure with the tension adjusting part 104 as the center, which not only ensures the structural stability of the tension applying device, but also ensures that the deformation of two opposite frame edges of the mask plate frame can be kept consistent when the tension applying device applies tension to the mask plate frame.
Illustratively, referring to fig. 5, one tension measuring section 105 is provided between one elastic stretching section 103 and the tension adjusting section 104, and the other tension measuring section 105 is provided between the other elastic stretching section 103 and the tension adjusting section 104. Of course, the positions of the tension measuring unit 105 and the elastic stretching unit 103 may be interchanged, and the connection sequence of the tension measuring unit 105 and the elastic stretching unit 103 is not limited in the embodiment of the present invention.
Fig. 6 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention. As can be seen with reference to fig. 6, the tensile force applying means may further include: a tension display part 106. The tension display unit 106 may be connected to the tension measuring unit 105, and the tension display unit 106 may be configured to display the tension detected by the tension measuring unit 105. When the tension adjusting part 104 changes the interval between the first connecting part 101 and the second connecting part 102, the tension applied to the mask frame by the tension applying device can be displayed by the tension displaying part 106.
It should be noted that, in the embodiment of the present invention, the tension measuring portion 105 may further have at least one of a display function and a voice broadcast function, that is, the tension measuring portion 105 may directly display or broadcast the detected tension value. In this case, the tension applying device may not need to be provided with the tension display unit 106 separately.
As can be seen from fig. 3 to 6, the tension adjusting part 104 may include: a pinion 1041, a first rack 1042, and a second rack 1043. The axis of the gear 1041 may be perpendicular to a line direction X of the first connecting portion 101 and the second connecting portion 102, and the length direction of each rack may be parallel to the line direction X. One end of the first rack 1042 can be engaged with the gear 1041, and the other end of the first rack 1042 can be used for connecting the first connecting portion 101. One end of the second rack 1043 may be engaged with the gear 1041, and the other end of the second rack 1043 may be used to connect the second connection portion 102.
For example, as shown in fig. 3, the other end of the first rack 1042 may be connected to the tension measuring unit 105, and may be connected to the first connecting unit 101 through the tension measuring unit 105 and the elastic stretching unit 103. The other end of the second rack 1043 may be connected to the second connection portion 102.
Alternatively, as shown in fig. 4, when the tension applying means includes two elastic stretching portions 103, the other end of the first rack 1042 is connected to the tension measuring portion 105, and can be connected to the first connecting portion 101 through the tension measuring portion 105 and the elastic stretching portions 103. The other end of the second rack 1043 may be connected to another elastic stretching portion 103, and connected to the second connecting portion 102 through the another elastic stretching portion 103.
Alternatively, as shown in fig. 5 and 6, when the tension applying means includes two elastic stretching portions 103 and two tension measuring portions 105, the other end of the first rack 1042 is connected to the tension measuring portion 105, and can be connected to the first connecting portion 101 through the tension measuring portion 105 and the elastic stretching portions 103. The other end of the second rack 1043 may be connected to another tension measuring portion 105 and connected to the second connecting portion 102 through the another tension measuring portion and another elastic stretching portion 103.
In the embodiment of the present invention, the connection relationship between the first rack 1042 and the second rack 1043 is not limited, and it is only necessary to ensure that the two racks and the elastic stretching portion are connected between the two connection portions.
With the structure shown in fig. 3 to 6, when the gear 1041 rotates clockwise, the first rack 1042 can slide in a direction approaching the second connection portion 102, and the second rack 1043 can slide in a direction approaching the first connection portion 101, and when the distance between the two connection portions decreases, the pulling force applied to the mask frame by the pulling force applying device increases. When the gear 1041 rotates counterclockwise, the first rack 1042 can slide in a direction away from the second connecting portion 102, and the second rack can slide in a direction away from the first connecting portion 101, at this time, the distance between the two connecting portions increases, and the pulling force applied to the mask frame by the pulling force applying device decreases.
As can be seen from fig. 3 to 6, the tension adjusting unit 104 may further include: a first connecting plate 1044 and a second connecting plate 1045. The other end of the first rack 1042 may be connected to one side of the first connection plate 1044, and the other side of the first connection plate 1044 may be used to connect the first connection portion 101. The other end of the second rack 1043 may be connected to one side of a second connection plate 1045, and the other side of the second connection plate 1045 may be used for connecting the second connection portion 102.
For example, referring to fig. 3 to 6, the other side of the first connection plate 1044 is connected to a tension measuring part 105. Referring to fig. 3, the other side of the second connection plate 1045 is connected to the second connection part 102. Referring to fig. 4, the other side of the second web 1045 is connected to another elastic stretching portion 103. Referring to fig. 5, the other side of the second link plate 1045 is connected to another tension measuring part 105. In the embodiment of the present invention, the connection relationship between the first connection plate 1044 and the second connection plate 1045 is not limited.
Fig. 7 is a schematic structural diagram of another tension applying device according to an embodiment of the present invention. As can be seen with reference to fig. 7, the tensile force applying means may further include: and a plate 107 is fixed. Fig. 8 is a schematic structural diagram of a fixing plate according to an embodiment of the present invention. As can be seen with reference to fig. 8, the fixing plate 107 may be provided with a first through hole 107a, a first rack groove 107b, and a second rack groove 107 c. The first rack 1042 may be disposed in the first rack groove 107b, and the second rack 1043 may be disposed in the second rack groove 107 c. The length directions of the first and second rack grooves 107b and 107c may be both parallel to the line direction X. When the pinion 1041 is rotated, the first rack 1042 can slide in the first rack groove 107b, the second rack 1043 can slide in the second rack groove 107c, and the sliding directions of the first rack 1042 and the second rack 1043 are opposite.
Referring to fig. 7, the first through hole 107a may be coaxial with the gear 1041, and a gear shaft of the gear 1041 may be disposed in the first through hole 107 a. The gear 1041 may be rotatably connected to the fixed plate 107 via the gear shaft, i.e., the gear 1041 may rotate relative to the fixed plate 107, but may not move relative to the fixed plate 107.
Referring to fig. 7, the tension adjusting part 104 may further include: a mount 1046. The fixing member 1046 can be detachably connected to the gear 1041, and when the fixing member 1046 is connected to the gear 1041, it can be used to limit the rotation of the gear 1041. The rotation of the gear 1041 is limited by the fixing member 1046, so that the pulling force applied between the two frame edges of the mask frame by the pulling force applying device can be kept stable, and the deformation amount of the mask frame under the action of the pulling force can be conveniently measured.
Optionally, the fixing member 1046 may include: a third rack 10461 and a link 10462. Referring to fig. 8, a third rack slot 107d may be provided on the fixing plate 107, and the third rack 10461 may be disposed in the third rack slot 107 d. The length direction of the third rack 10461 may be perpendicular to the line direction X of the first and second coupling portions 101 and 102, and the length direction of the third rack slot 107d may be parallel to the line direction X.
The third rack 10461 may be slidably coupled to the third rack slot 107d, and the third rack 10461 may be engaged with the pinion 1041 when the third rack 10461 is slid to an end of the third rack slot 107 d. When the third rack 10461 slides to the other end of the third rack slot 107d, the third rack 10461 may be disconnected from the pinion 1041.
The connecting member 10462 may be connected to the fixing plate 107 and the third rack 10461, respectively, for fixing the third rack 10461 in the third rack slot 107 d.
For example, when the distance between the first connecting portion 101 and the second connecting portion 102 needs to be adjusted by the tension adjusting portion 104, the third rack 10461 may be slid to the other end of the third rack slot 107d, and the third rack 10461 may be fixed in the rack slot 105d by the link 10462 so that the third rack 10461 does not mesh with the gear 1041. At this time, the gear 1041 can rotate freely, thereby adjusting the interval between the first connection part 101 and the second connection part 102.
After the adjustment of the distance between the first connecting portion 101 and the second connecting portion 102 is completed by the tension adjusting portion 104, in order to ensure the stability of the tension applied to the two frame sides of the mask frame by the tension applying device, the third rack 10461 may be slid to one end of the third rack groove 107d, the third rack 10461 may be engaged with the gear, and the third rack 10461 may be fixed in the third rack groove 107d by the connecting member 10462. At this time, since the third rack 10461 is fixed, the gear 1041 engaged with the third rack 10461 cannot rotate freely, and the pulling force applied to the mask frame by the pulling force applying device is kept stable.
Alternatively, as shown in fig. 7, the connection member 10462 may be a bolt. Of course, other connecting members may be used, for example, a buckle, which is not limited in the embodiment of the present invention.
When the connecting member 10462 is a bolt, a second through hole 107e may be provided in the third rack slot 107d, the second through hole 107e may be a strip-shaped through hole, a length direction of the strip-shaped through hole is parallel to a line direction X connecting the first connecting portion 101 and the second connecting portion 102, and the bolt may be fixed at different positions in the strip-shaped through hole, thereby fixing the third rack 10461 at different positions in the third rack slot 107 d. Of course, a plurality of circular through holes may be provided at intervals in the third rack slot 107d, and bolts may be fixed in different circular through holes to fix the third rack 10461 at different positions in the third rack slot 107 d. The shape and number of the second through holes 107e are not limited in the embodiment of the present invention.
In the embodiment of the present invention, the fixing element 1046 may also be a buckle, and in order to ensure that the gear 1041 does not rotate, the gear 1041 may be fixed by the buckle. The embodiment of the invention does not limit the implementation form of the fixing piece.
As can be seen with reference to fig. 7, each connection portion may be a hook, and the hook may be hung on a frame edge of the mask frame. Or each connecting part can also be an adhesive connecting part which can be fixedly adhered with the frame edge of the mask plate frame. The first connection portion 101 and the second connection portion 102 may be implemented in the same manner or in different manners, which is not limited in this embodiment of the present invention.
Alternatively, as shown in fig. 3 to 7, the tensile force applying device may further include: a plurality of connecting rods 10 a. Each connecting rod 10a may be used to connect two components.
For example, referring to fig. 2, the first connecting portion 101 and an elastic stretching portion 103 may be connected by one of the connecting rods 10 a. An elastic stretching portion 103 and a tension measuring portion 105 may be connected by a connecting rod 10 a. A tension measuring part 105 and the first connection plate 1044 may be connected by a connection rod 10 a. The second connection portion 102 and the second connection plate 1045 may be connected by one connection rod 10 a.
Referring to fig. 3, the first connecting portion 101 and an elastic stretching portion 103 may be connected by one of the connecting rods 10 a. An elastic stretching portion 103 and a tension measuring portion 105 may be connected by a connecting rod 10 a. A tension measuring part 105 and the first connection plate 1044 may be connected by a connection rod 10 a. The second connecting portion 102 and the other elastic stretching portion 103 may be connected by one connecting rod 10 a. The other elastic stretch 103 and the second web 1045 may be connected by a connecting rod 10 a.
Referring to fig. 4, 5 and 7, the first connecting portion 101 and an elastic stretching portion 103 may be connected by one of the connecting rods 10 a. An elastic stretching portion 103 and a tension measuring portion 105 may be connected by a connecting rod 10 a. A tension measuring part 105 and the first connection plate 1044 may be connected by a connection rod 10 a. The second connecting portion 102 and the other elastic stretching portion 103 may be connected by one connecting rod 10 a. The other elastic stretching portion 103 and the other tension measuring portion 105 are connected by one connecting rod 10a, and the other tension measuring portion 105 and the second link plate 1045 are connected by one connecting rod 10 a.
In summary, an embodiment of the present invention provides a tension applying apparatus, including: the elastic stretching part and the tension adjusting part are connected between the first connecting part and the second connecting part. The two connecting parts can be connected with the two rims of the mask plate frame, and the tension adjusting part can adjust the distance between the two connecting parts, so that the tension between the two rims of the mask plate frame can be adjusted. The tension applying device provided by the embodiment of the invention can simulate the stress condition of the mask strip between the two frame edges of the mask plate frame, and is convenient for predicting the deformation of the mask plate frame after the mask strip is welded, so that the relevant parameters of the mask strip in the welding process can be adjusted according to the deformation, the mask strip is prevented from being damaged and deformed in the welding process, and the evaporation effect of the organic light-emitting material is ensured. For example, the deformation amount of the mask frame under the action of the tension applying device can be applied to the determination process of the resistance of the mask strip, so that the accuracy of the determined resistance of the mask strip can be effectively improved.
Fig. 9 is a flowchart of a method for determining a resistance force of a mask strip according to an embodiment of the present invention, which may be applied to the tension applying apparatus shown in any one of fig. 2 to 8, and which may include:
and step 901, connecting the tension applying device with a mask plate frame of a mask plate.
In the embodiment of the present invention, before welding the mask strips, the tension applying device provided in the above embodiment may be connected to the frame edge of the mask frame for welding the mask strips, so as to apply tension to the mask frame.
Because a plurality of mask strips need to be welded on the mask plate frame of each mask plate, when the resistance to the mask strips is determined, the number of the tension applying devices can be determined according to the number of the mask strips needing to be welded on the mask plate frame, and the number of the tension applying devices is equal to the number of the mask strips. Then, each tension applying device may be connected to two rims of the mask frame, and each tension applying device may be disposed at a welding position of a corresponding one of the mask strips.
For example, assuming that 8 mask strips need to be arranged on the mask frame, 8 tension applying devices are required to apply tension to the mask frame. Assuming that the mask frame is a rectangular frame as shown in fig. 1, and two longer frame edges in the mask frame are frame edges for welding the mask strips, the first connecting portion and the second connecting portion of each tension applying device may be connected to the two longer frame edges, respectively.
And 902, adjusting a tension adjusting part of the tension applying device to adjust the tension applied by the tension applying device to a preset tension value.
In the embodiment of the present invention, for each tension applying device, the tension adjusting portion in the tension applying device may be adjusted to change the distance between the first connecting portion and the second connecting portion in the tension applying device, so that the tension applied by the tension applying device is equal to a preset tension value, where the preset tension value may be a tension value that can be borne by a mask strip measured in advance.
For example, a stretching test may be performed on the mask strip in advance by using a stretching machine, and the tensile force value that can be borne by the mask strip may be determined as the preset tensile force value.
For example, a stretching machine may be used to measure a first deformation amount of the mask frame when the tension applying device applies tension, and the first deformation amount may be a deformation amount of two frame sides connected by the tension applying device.
And 904, disconnecting the tension applying device from the mask plate frame, and connecting the counter force applying device with the mask plate frame.
The reaction force applying device can apply acting force to the mask plate frame under the driving of an air cylinder or a motor, and the direction of the acting force applied by the reaction force applying device can be the same as the direction of the pulling force applied by the pulling force applying device.
In an embodiment of the present invention, the pulling force applied to the mask frame by the counter force applying device can be continuously adjusted, and the second deformation of the mask frame when different forces are applied by the counter force applying device can be measured.
When the detected second deformation amount is the same as the first deformation amount, performing step 907; when the detected second deformation amount is different from the first deformation amount, step 905 is performed, in which the pulling force applied to the mask frame by the counter force applying device is continuously adjusted.
The force applied by the counter force applying means is determined as the resistance of the mask strip, step 907.
When the second deformation amount is the same as the first deformation amount, the force applied by the reaction force applying means may be determined as the resistance force of the mask strip.
Optionally, after step 907, the pulling force exerted by the counterforce exerting device can be maintained as the resisting force of the mask strip, and the mask strip can be welded on the mask frame.
The first deformation is obtained by actual measurement after the tension applying device provided by the embodiment of the invention applies tension to the mask plate frame, and the tension applied to the mask plate frame by the tension applying device is a preset tension value which can be borne by the mask strips. Therefore, the first deformation of the mask plate frame is measured, the acting force applied by the counter force applying device is adjusted, the second deformation of the mask plate frame generated under the action of the acting force is the same as the first deformation, the acting force applied to the mask plate frame by the counter force applying device can be ensured to be equal to the pulling force applied to the mask strip by the mask plate frame, and the pulling force is opposite in direction, so that the mask strip is prevented from being damaged and deformed during welding.
It should be noted that, in the embodiment of the present invention, the step 906 may be eliminated as appropriate, that is, the pulling force applied to the mask frame by the counter force applying device may be continuously adjusted until the second deformation amount of the mask frame is the same as the first deformation amount generated by the pulling force applied to the mask frame by the pulling force applying device.
In summary, embodiments of the present invention provide a method for determining a resistance of a mask strip, in which a tensile force applying device applies a tensile force to a mask frame according to a preset tensile force value of the mask strip, and a first deformation amount of the mask frame is measured. The second deformation amount generated by the acting force applied to the mask plate frame by the counter force applying device can be the same as the first deformation amount, and the acting force is equal to the acting force applied to the mask strip by the mask plate frame and is opposite to the acting force. The method for determining the resistance of the mask strip provided by the embodiment of the invention can simulate the stress condition of the mask strip between two frame edges of a mask plate frame, so that the deformation of the mask plate frame under the action of a tension applying device can be applied to the determination process of the resistance of the mask strip, the accuracy of the determined resistance can be effectively improved, the mask strip is prevented from being damaged and deformed, and the evaporation effect of an organic light-emitting material is ensured.
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A tension applying apparatus for determining a resistance force of a mask strip, comprising: the elastic stretching part and the tension adjusting part are connected between the first connecting part and the second connecting part;
the first connecting part is used for being connected with one frame edge of a mask plate frame, and the second connecting part is used for being connected with the other frame edge of the mask plate frame;
the tension adjusting part is used for adjusting the distance between the first connecting part and the second connecting part; wherein the determination of the resistance of the mask stripes comprises: connecting the tension applying device with the mask plate frame; adjusting the tension applied by the tension applying device to a preset tension value; measuring a first deformation amount of the mask plate frame; the tensile force applying device is disconnected with the mask plate frame, and the counter force applying device is connected with the mask plate frame; adjusting the acting force applied by the counter force applying device and measuring a second deformation of the mask plate frame; determining the force applied by the counter force applying device as the resisting force of the mask strip when the second deformation amount is the same as the first deformation amount.
2. The tension applying device according to claim 1, further comprising: a tension measuring part connected between the first connection part and the second connection part;
the tension measuring part is used for measuring tension between the first connecting part and the second connecting part.
3. The tension applying apparatus as claimed in claim 1, wherein the tension applying apparatus comprises: two of the elastic stretching portions;
the first connecting portion is connected to one of the elastically stretchable portions, and the second connecting portion is connected to the other of the elastically stretchable portions;
the tension adjusting part is arranged between the two elastic stretching parts.
4. The tension applying apparatus as claimed in claim 3, wherein the tension applying apparatus comprises: two tension measuring parts;
one of the tension measuring sections is provided between one of the elastic stretching sections and the tension adjusting section, and the other tension measuring section is provided between the other of the elastic stretching sections and the tension adjusting section;
each tension measuring portion is used for measuring tension between the first connecting portion and the second connecting portion.
5. The tension applying device according to claim 2 or 4, further comprising: a tension display unit;
the tension display part is connected with the tension measuring part and used for displaying the tension detected by the tension measuring part.
6. The tension applying apparatus according to any one of claims 1 to 4, wherein the tension adjusting portion includes: the gear, the first rack and the second rack;
the axis of the gear is perpendicular to the connecting line direction of the first connecting part and the second connecting part, and the length direction of each rack is parallel to the connecting line direction;
one end of the first rack is meshed with the gear, and the other end of the first rack is connected with the first connecting part;
one end of the second rack is meshed with the gear, and the other end of the second rack is connected with the second connecting part.
7. The tension applying device according to claim 6, further comprising: a fixing plate;
the fixing plate is provided with a first through hole, a first rack groove and a second rack groove, the first rack is arranged in the first rack groove, the second rack is arranged in the second rack groove, and the length direction of each rack groove is parallel to the wiring direction;
the first through hole and the gear are coaxial, and a gear shaft of the gear is arranged in the first through hole.
8. The tension applying apparatus according to claim 6, wherein the tension adjusting portion further comprises: a fixing member;
the fixing piece with the gear can be dismantled and be connected, just the fixing piece with during gear connection, be used for the restriction the gear rotates.
9. The tension applying device according to claim 8, further comprising: a fixing plate; the fixing member includes: a third rack and a connecting piece;
a third rack groove is formed in the fixing plate, the third rack is arranged in the third rack groove, the length direction of the third rack is perpendicular to the wiring direction, and the length direction of the third rack groove is parallel to the wiring direction;
the third rack is slidably coupled to the third rack groove, and is engaged with the gear when the third rack slides to one end of the third rack groove, and is disengaged from the gear when the third rack slides to the other end of the third rack groove;
and the connecting piece is respectively connected with the fixing plate and the third rack and is used for fixing the third rack in the third rack groove.
10. A method for determining a resistance force of a mask strip, which is applied to the tension applying apparatus according to any one of claims 1 to 9, the method comprising:
connecting the tension applying device with a mask plate frame of a mask plate;
adjusting a tension adjusting part of the tension applying device to adjust the tension applied by the tension applying device to a preset tension value;
measuring a first deformation amount of the mask plate frame;
the tensile force applying device is disconnected with the mask plate frame, and the counter force applying device is connected with the mask plate frame;
adjusting the acting force applied by the counter force applying device and measuring a second deformation of the mask plate frame;
determining the force applied by the counter force applying device as the resisting force of the mask strip when the second deformation amount is the same as the first deformation amount.
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| CN201811397276.2A CN109540668B (en) | 2018-11-22 | 2018-11-22 | Tension applying device and method for determining resistance of mask strip |
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| CN201811397276.2A CN109540668B (en) | 2018-11-22 | 2018-11-22 | Tension applying device and method for determining resistance of mask strip |
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| CN112507584B (en) * | 2020-11-27 | 2023-01-10 | 昆山国显光电有限公司 | Method and device for determining tension-net counter force of mask frame and mask |
| CN112430797B (en) * | 2021-01-26 | 2021-05-07 | 上海精骊电子技术有限公司 | Method for loading reverse force in net tensioning equipment |
| CN113059290B (en) * | 2021-02-19 | 2022-12-09 | 福建华佳彩有限公司 | Method for processing mask plate through displacement control |
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