阅读说明：本技术 一种张网褶皱改善装置 (Device is improved to a net fold ) 是由 张麒麟 吴聪原 于 2021-10-13 设计创作，主要内容包括：本发明公开了一种张网褶皱改善装置,包括加工台,所述加工台上表面中心处安装有掩膜框,两组所述夹爪机构之间夹紧有掩膜条,且掩膜条位于掩膜框上方,夹爪机构对掩膜条精准夹紧的同时,不会对掩膜条表面造成损坏,所述电缸的活塞杆下端设有方板,所述固定杆上表面均匀插入有两组导轨,所述导轨下端固定连接有接触杆,所述导轨表面套接有压力弹簧,压力弹簧的弹力用于控制接触杆向下移动,使得接触杆具有一定的缓冲空间,避免出现刚性接触的情况,所述接触杆下表面均匀安装有四组第一弹簧筒和两组第二弹簧筒,本装置改善蒸镀制程中掩模板与掩膜条紧密贴合情况,避免掩膜框不良对张网精度及形貌造成影响。(The invention discloses a mesh folding improving device, which comprises a processing table, wherein a mask frame is arranged at the center of the upper surface of the processing table, a mask strip is clamped between two groups of clamping jaw mechanisms and is positioned above the mask frame, the clamping jaw mechanisms can accurately clamp the mask strip without damaging the surface of the mask strip, a square plate is arranged at the lower end of a piston rod of an electric cylinder, two groups of guide rails are uniformly inserted into the upper surface of a fixed rod, the lower ends of the guide rails are fixedly connected with contact rods, pressure springs are sleeved on the surfaces of the guide rails, the elasticity of the pressure springs is used for controlling the contact rods to move downwards, so that the contact rods have certain buffer space to avoid the situation of rigid contact, four groups of first spring cylinders and two groups of second spring cylinders are uniformly arranged on the lower surface of the contact rods, and the device improves the close fit condition of a mask plate and the mask strip in an evaporation process, the influence of bad mask frame on the net stretching precision and appearance is avoided.)

1. A mesh pleat improving device comprises a processing table (1), and is characterized in that: the mask frame (2) is installed at the center of the upper surface of the processing table (1), clamping jaw mechanisms (3) are installed on the left side and the right side of the mask frame (2) and located on the surface of the processing table (1), two groups of mask strips (8) are clamped between the clamping jaw mechanisms (3), the mask strips (8) are located above the mask frame (2), an electric cylinder (10) is installed on the upper surface of the processing table (1) through an n-shaped frame (9), a square plate (11) is arranged at the lower end of a piston rod of the electric cylinder (10), fixing rods (13) are fixedly connected with the left side and the right side of the lower surface of the square plate (11) through connecting rods (12), two groups of guide rails (14) are uniformly inserted into the upper surface of the fixing rods (13), contact rods (15) are fixedly connected with the lower ends of the guide rails (14), pressure springs (16) are sleeved on the surfaces of the guide rails (14), and the pressure springs (16) are located between the fixing rods (13) and the contact rods (15), contact bar (15) lower surface evenly installs four groups of first spring section of thick bamboo (17) and two sets of second spring section of thick bamboo (20), first spring section of thick bamboo (17) inside is equipped with first spring (19) and is located first thimble (18) of spring (19) lower extreme, second spring section of thick bamboo (20) inside is equipped with second spring (22) and is located second thimble (21) of second spring (22) lower extreme, the length of second thimble (21) is greater than first thimble (18).

2. A web crepe improving device as set forth in claim 1, wherein: clamping jaw mechanism (3) are including bracing piece (4), bracing piece (4) surface upper portion is equipped with punch holder (5), punch holder (5) below just is located bracing piece (4) surface and is equipped with and presss from both sides tight electric jar (6), the piston rod upper end that presss from both sides tight electric jar (6) is equipped with lower plate (7), mask strip (8) one end is located between punch holder (5) and lower plate (7).

3. A web crepe improving device as set forth in claim 1, wherein: the lower end of the n-shaped frame (9) is fixedly connected to the edge of the upper surface of the processing table (1), and the electric cylinder (10) is positioned right above the mask frame (2).

4. A web crepe improving device as set forth in claim 1, wherein: the two groups of second spring cylinders (20) are positioned at the centers of the lower surfaces of the corresponding contact rods (15), and the four groups of first spring cylinders (17) are uniformly positioned at the left and right sides of the two groups of second spring cylinders (20).

5. A web crepe improving device as set forth in claim 1, wherein: the first thimble (18) and the second thimble (21) are positioned right above the mask strip (8).

6. A web crepe improving device as set forth in claim 1, wherein: the upper end of the guide rail (14) is provided with a stop block, the stop block and the guide rail (14) are integrally formed, and the whole guide rail (14) is of a T-shaped structure.

Technical Field

The invention relates to the technical field of display manufacturing, in particular to a mesh wrinkle improving device.

Background

In the existing Organic Light Emitting Diode (OLED) manufacturing process, a high-precision Metal Mask (Fine Metal Mask) is required to be adopted in an evaporation process to shield an area which does not need evaporation, so that the accuracy of coating a Light Emitting layer of a pixel point is ensured. The high-precision metal mask plate mainly comprises a mask frame and high-precision metal mask strips (Fine masks), the sizes and the position precision of the mask strips are eliminated, the surface appearance of the mask strips directly determines the attaching degree of the mask and a substrate, and if the mask strips are not attached well, a coating area is easy to expand to generate uneven coating or color mixing.

In the current screen-stretching process (as shown in fig. 6 in the specification), the high-precision metal mask strips B need to be stretched by the left and right ends under stress and then welded on the mask frame a. In order to ensure that the mask frame A and the high-fineness metal mask strip B are attached to each other as much as possible, the high-fineness metal mask strip B is usually clamped by a piece of equipment for stretching the screen before welding through a clamping jaw D, the outer part of the mask frame A is lower than the upper plane of the mask frame A, so that the high-fineness metal mask strip B generates a fold C due to poor surface morphology of the mask frame A, the force application of the clamping jaw D is changed, the position of a sub-pixel opening is further changed, and the high-fineness metal mask strip B is a big problem needing to be overcome.

Disclosure of Invention

The present invention is directed to a mesh pleat improving device to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a device for improving the mesh wrinkles comprises a processing table, wherein a mask frame is arranged in the center of the upper surface of the processing table, and clamping jaw mechanisms are arranged on the left side and the right side of the mask frame and positioned on the surface of the processing table;

the clamping jaw mechanism comprises a supporting rod, an upper clamping plate is arranged on the upper portion of the surface of the supporting rod, a clamping electric cylinder is arranged below the upper clamping plate and positioned on the surface of the supporting rod, a lower clamping plate is arranged at the upper end of a piston rod of the clamping electric cylinder, and one end of the mask strip is positioned between the upper clamping plate and the lower clamping plate;

the upper clamping plate and the clamping electric cylinder are fixedly connected with the supporting rod, the lower clamping plate is in contact with the supporting rod and is in sliding connection, the clamping electric cylinder can control the lower clamping plate to be close to or far away from the upper clamping plate, and further clamping and loosening of the mask strip are achieved, the extending length of a piston rod of the clamping electric cylinder is high in precision, the mask strip can be accurately clamped, and meanwhile, the surface of the mask strip cannot be damaged;

a mask strip is clamped between the two groups of clamping jaw mechanisms and is positioned above the mask frame, an electric cylinder is arranged on the upper surface of the processing table through an n-shaped frame, the lower end of the n-shaped frame is fixedly connected to the edge of the upper surface of the processing table, the electric cylinder is positioned right above the mask frame and is positioned in the middle of the upper surface of the n-shaped frame, and the n-shaped frame is made of stainless steel materials, so that the n-shaped frame is firm, meanwhile, the corrosion condition cannot occur, and the normal work of the electric cylinder is prevented from being influenced;

the lower end of a piston rod of the electric cylinder is provided with a square plate, the left side and the right side of the lower surface of the square plate are respectively provided with a fixed rod fixedly connected through a connecting rod, two groups of guide rails are uniformly inserted into the upper surface of the fixed rod, the lower end of each guide rail is fixedly connected with a contact rod, the surface of each guide rail is sleeved with a pressure spring, and the pressure springs are positioned between the fixed rods and the contact rods;

four groups of first spring barrels and two groups of second spring barrels are uniformly arranged on the lower surface of the contact rod, a first spring and a first ejector pin positioned at the lower end of the first spring are arranged in the first spring barrel, a second spring and a second ejector pin positioned at the lower end of the second spring are arranged in the second spring barrel, the length of the second ejector pin is larger than that of the first ejector pin, the first ejector pin and the second ejector pin are positioned right above the mask strip, the two groups of second spring barrels are positioned at the center of the lower surface of the corresponding contact rod, and the four groups of first spring barrels are uniformly positioned at the left side and the right side of the two groups of second spring barrels;

under the natural state, two sets of second thimbles and four groups of first thimble forms one row of thimble, and wherein two sets of second thimbles are comparatively outstanding, form the form that the mid portion is slightly long, both sides are shorter, and one row of thimble contacts the mask strip earlier when contacting the mask strip, and the back contact mask strip of both sides for the mask strip evenly opens, avoids middle zone mask strip extrusion fold.

As a further optimization of the technical scheme, a stop block is arranged at the upper end of the guide rail, the stop block and the guide rail are integrally formed, and the guide rail is integrally of a T-shaped structure.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the first thimble and the second thimble are controlled to lift by the electric cylinder, the mask strip and the mask frame can be tightly pressed, the adhesion of the mask strip and the mask frame is ensured, the first thimble and the second thimble are in elastic contact with each other in a lifting and pressing manner, the problem that rigid contact may damage the mask strip to cause deformation and further cause uneven stress is avoided, wrinkles caused by screen stretching of the mask strip are improved, the screen stretching success rate is improved, the condition that a mask plate and the mask strip are tightly adhered in an evaporation process is improved, and the influence of poor mask frame on the screen stretching precision and appearance is avoided, so that the sub-pixel position precision is ensured, the film forming and shadow effects are reduced, the product yield is improved, and the problem of poor panel display uniformity is improved.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is an enlarged view of the structure of FIG. 1 at B;

FIG. 4 is a schematic view of the connection structure of the fixing rod and the contact rod according to the present invention;

FIG. 5 is a view showing a state in which the contact lever is pressed down according to the present invention;

fig. 6 is a top view of a current sheet.

In the figure: 1. a processing table; 2. a mask frame; 3. a jaw mechanism; 4. a support bar; 5. an upper splint; 6. clamping the electric cylinder; 7. a lower splint; 8. a mask strip; 9. an n-shaped frame; 10. an electric cylinder; 11. a square plate; 12. a connecting rod; 13. fixing the rod; 14. a guide rail; 15. a contact lever; 16. a pressure spring; 17. a first spring cartridge; 18. a first thimble; 19. a first spring; 20. a second spring cartridge; 21. a second thimble; 22. a second spring;

a. a mask frame A; b. mask stripes B; c. folding C; d. and a clamping jaw D.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a mesh fold improving device comprises a processing table 1, wherein a mask frame 2 is arranged at the center of the upper surface of the processing table 1, clamping jaw mechanisms 3 are arranged on the left side and the right side of the mask frame 2 and positioned on the surface of the processing table 1, mask strips 8 are clamped between the two groups of clamping jaw mechanisms 3, and the mask strips 8 are positioned above the mask frame 2;

the processing table 1 plays a role in supporting and fixing the whole device, and the clamping jaw mechanism 3 is used for clamping the mask strip 8, so that the mask strip 8 cannot shake when being placed on the surface of the mask frame 2;

an electric cylinder 10 is mounted on the upper surface of the processing table 1 through an n-shaped frame 9, a square plate 11 is arranged at the lower end of a piston rod of the electric cylinder 10, fixing rods 13 are fixedly connected to the left side and the right side of the lower surface of the square plate 11 through connecting rods 12, two groups of guide rails 14 are uniformly inserted into the upper surface of each fixing rod 13, contact rods 15 are fixedly connected to the lower ends of the guide rails 14, pressure springs 16 are sleeved on the surfaces of the guide rails 14, and the pressure springs 16 are located between the fixing rods 13 and the contact rods 15;

the n-shaped frame 9 fixes the electric cylinder 10 to be suspended above the mask frame 2, the electric cylinder 10 is used for controlling the fixing rod 13 to lift, and the elastic force of the pressure spring 16 is used for controlling the contact rod 15 to move downwards, so that the contact rod 15 has a certain buffer space, and the rigid contact condition is avoided;

four groups of first spring barrels 17 and two groups of second spring barrels 20 are uniformly mounted on the lower surface of the contact rod 15, a first spring 19 and a first ejector pin 18 positioned at the lower end of the first spring 19 are arranged in the first spring barrel 17, a second spring 22 and a second ejector pin 21 positioned at the lower end of the second spring 22 are arranged in the second spring barrel 20, and the length of the second ejector pin 21 is greater than that of the first ejector pin 18;

when the first thimble 18 and the second thimble 21 contact with the mask strip 8, the first spring 19 and the second spring 22 are compressed, so that the first thimble 18 and the second thimble 21 also have a certain moving range, and the mask strip 8 is prevented from being crushed by the first thimble 18 and the second thimble 21.

When the mask clamping device is specifically implemented, the clamping jaw mechanism 3 comprises a supporting rod 4, an upper clamping plate 5 is arranged on the upper portion of the surface of the supporting rod 4, a clamping electric cylinder 6 is arranged below the upper clamping plate 5 and on the surface of the supporting rod 4, a lower clamping plate 7 is arranged on the upper end of a piston rod of the clamping electric cylinder 6, one end of a mask strip 8 is arranged between the upper clamping plate 5 and the lower clamping plate 7, the piston rod of the clamping electric cylinder 6 is controlled to stretch out or retract, and then the lower clamping plate 7 is controlled to clamp the mask strip 8 on the surface of the upper clamping plate 5.

During specific implementation, the lower end of the n-shaped frame 9 is fixedly connected to the edge of the upper surface of the processing table 1, the electric cylinder 10 is located right above the mask frame 2, and the n-shaped frame 9 is fixed to the shell of the electric cylinder 10, so that the electric cylinder 10 can be ensured to normally control the fixed rod 13 to ascend and descend.

In specific implementation, the two groups of second spring barrels 20 are located at the center of the lower surface of the corresponding contact rod 15, the four groups of first spring barrels 17 are evenly located at the left and right sides of the two groups of second spring barrels 20, and the state shown in fig. 4 is formed, and the second thimble 21 protrudes a portion of the second thimble compared with the first thimble 18.

In specific implementation, the first thimble 18 and the second thimble 21 are located right above the mask strip 8, so as to ensure that the first thimble 18 and the second thimble 21 can smoothly abut against the surface of the mask strip 8.

During specific implementation, a stopper is arranged at the upper end of the guide rail 14, the stopper and the guide rail 14 are integrally formed, the guide rail 14 is integrally of a T-shaped structure, and the stopper can prevent the fixing rod 13 from falling off from the guide rail 14.

Specifically, when in use, two ends of a mask strip 8 are clamped by two groups of clamping jaw mechanisms 3, the mask strip 8 is in contact with a mask frame 2, then an electric cylinder 10 is started, the electric cylinder 10 controls a square plate 11 and a connecting rod 12 to move downwards, the connecting rod 12 drives a corresponding fixed rod 13 to move downwards, the fixed rod 13 drives a contact rod 15 to move downwards through a guide rail 14, a first thimble 18 and a second thimble 21 move downwards along with the contact rod 15, when the second thimble 21 is in contact with the mask strip 8, the fixed rod 13 continues to move downwards, a pressure spring 16 is compressed, the pressure spring 16 generates elasticity and pushes the contact rod 15 to move downwards, the first thimble 18 abuts against the surface of the mask strip 8 at the moment, so that the mask strip 8 is uniformly opened, the second thimble 21 compresses the mask strip 8 to avoid the phenomenon that wrinkles occur in the middle of the mask strip 8, the first thimble 18 and the second thimble 21 compress and enable the mask strip 8 to be attached to the mask frame 2, and then welding to complete the net stretching.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.