Display screen positioning and gluing device

Abstract

The present invention discloses a display screen positioning and gluing device, comprising a table, a first drive mechanism, a second drive mechanism, a collecting block, a sliding partition, and an elastic reset member. The table is fixed with a first limit bar and a second limit bar, and the table is also provided with a convex column; the first drive mechanism comprises a first linear drive member and a third limit bar, the first linear drive member connecting the table and the third limit bar; the second drive mechanism comprises a second linear drive member and a fourth limit bar, the second linear drive member connecting the table and the fourth limit bar; the collecting block is provided on the fourth limit bar, and is provided with a flow channel, the flow channel including a direct current section; the collecting block is also provided with a chute connecting its two ends, the chute connecting the direct current section; the end of the sliding partition protrudes from the end face of the collecting block to form a protruding section, the protruding section being used to cooperate with the convex column; the elastic reset member is provided in the chute, and the elastic reset member contacts the sliding partition and the collecting block respectively. This display screen positioning and gluing device can take into account both production efficiency and product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen production equipment, and in particular to a display screen positioning and gluing device. Background Art

[0002] During the production of the display screen, there is a gluing process, which is used to bond the middle frame and the display panel and form a certain degree of sealing, such as Figure 1 As shown, the middle frame 7 includes a surrounding wall 71 and an inwardly protruding support edge 72. The support edge 72 and the surrounding wall 71 are generally an integrated structure. Double-sided tape or glue (named as the first glue portion 91) is provided on the support edge 72 for bonding the display panel 8. In order to further improve the bonding effect between the display panel 8 and the middle frame 7, some display screens not only bond the support edge 72 to the back of the display panel 8, but also connect the inner wall of the surrounding wall 71 to the peripheral wall of the display panel 8 through glue (named as the second glue portion 92). In actual operation, the glue is directly injected into the gap between the surrounding wall 71 and the display panel 8. Since the back of the display panel 8 is glued to the support edge 72 in advance, the glue injected into the gap will not flow into the interior of the middle frame 7.

[0003] However, as display screens develop towards being thinner and more highly integrated, some display screen products require a window 73 to be opened on the frame 7, and the support edge 72 is disconnected in the area corresponding to the window 73 to form a vacant position. The window 73 can be used to install speakers, lighting components or other components. However, due to the existence of the vacant position on the support edge 72, during the process of applying glue to the gap between the surrounding wall 71 and the display panel 8, the glue will flow down at the position of the gap corresponding to the window 73. An additional process is required to wipe off the glue dripping into the window 73 or to scrape off the glue solidified on the window 73. If the residual glue in the window 73 is left unattended, it will affect the installation of the speaker, lighting components or other components and the appearance of the display screen. To overcome this problem, there are generally two measures in the existing technology. One is not to apply glue to the vacant position of the gap corresponding to the support edge 72, so that the local area of ​​the gap is lacking glue, but this will undoubtedly reduce the stability and sealing of the connection between the display panel 8 and the middle frame 7; the other is to set up an additional process to wipe the glue at the window 73 or scrape off the colloid at the window 73 after the gap is glued. This will undoubtedly reduce the production efficiency of the display screen and increase the manufacturing cost of the display screen. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a display screen positioning and gluing device that can take into account both production efficiency and product quality.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a display screen positioning and gluing device, comprising:

[0006] A table top, wherein a first limiting strip and a second limiting strip are fixedly provided on the table top, wherein the first limiting strip and the second limiting strip are perpendicular to each other, and a convex column is further provided on the table top;

[0007] a first driving mechanism, the first driving mechanism comprising a first linear driving member and a third limiting bar, the third limiting bar being arranged opposite to the second limiting bar, the first linear driving member connecting the platform and the third limiting bar to drive the third limiting bar toward or away from the second limiting bar along a first direction;

[0008] a second driving mechanism, the second driving mechanism comprising a second linear driving member and a fourth limiting bar, the fourth limiting bar being arranged opposite to the first limiting bar, the second linear driving member connecting the platform and the fourth limiting bar to drive the fourth limiting bar to approach or move away from the first limiting bar along a second direction, the first direction being perpendicular to the second direction; the first limiting bar, the second limiting bar, the third limiting bar and the fourth limiting bar limiting a placement position for placing the middle frame;

[0009] A collecting block, the collecting block being arranged on the fourth limiting strip and being located on a side of the fourth limiting strip close to the first limiting strip, the collecting block being provided with a flow channel, the flow channel comprising an isosceles trapezoidal segment and a DC segment, the large-diameter end of the isosceles trapezoidal segment being connected to the top surface of the collecting block, the small-diameter end of the isosceles trapezoidal segment being connected to the top of the DC segment, and the bottom end of the DC segment being connected to the bottom surface of the collecting block; the collecting block being further provided with a chute connecting its two ends, the middle area of ​​the chute being connected to the DC segment;

[0010] a sliding partition, the sliding partition being slidably disposed in the sliding groove and having an end portion thereof protruding from an end surface of the collecting block to form a protruding section, the protruding section being adapted to cooperate with the protruding column, the sliding partition being slidable along the second direction;

[0011] An elastic reset member is provided in the slide groove, the elastic reset member contacts the sliding partition and the collecting block respectively, and the elastic reset member is used to drive the sliding partition to slide toward the fourth limit strip.

[0012] The beneficial effects of the present invention are:

[0013] The positioning and gluing device of this display screen has a novel structure. The cooperation of the first limit bar, the second limit bar, the third limit bar and the fourth limit bar can accurately position the display hollow, which is beneficial to ensure the gluing accuracy of the gap between the wall of the middle frame and the display panel, and improve the product quality of the display screen.

[0014] When the fourth limit bar contacts the middle frame, the collecting block on the fourth limit bar can pass through the window of the middle frame, and the large diameter end of the isosceles trapezoidal segment is aligned and connected with the area of ​​the aforementioned gap corresponding to the window. Therefore, when glue is injected into the area of ​​the aforementioned gap corresponding to the window, even if the glue drips from the gap, it will only drip into the flow channel of the collecting block, so that it is collected by the flow channel of the collecting block. After the collecting block exits the window, no glue or colloid will remain outside the window. Therefore, there is no need to set up an additional process of wiping the glue / scraping off the colloid, which is beneficial to improving the production efficiency and product quality of the display screen.

[0015] After the second linear drive member drives the fourth limit strip to retreat to a certain extent, the boss contacts the sliding partition, and the fourth limit strip continues to retreat. The sliding partition is displaced relative to the collecting block under the support of the boss, allowing the DC section to change from a disconnected state to a connected state, thereby allowing the glue in the flow channel to flow out from the bottom end of the flow channel, thereby cleaning the flow channel. Moreover, since the sliding partition will switch the DC section between the disconnected state and the connected state each time the gluing operation of the display screen is completed, there will not be too much glue left in the flow channel, causing the flow channel to be blocked, which is conducive to ensuring the continuity of production and thus improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 A cross-sectional view of a middle frame and a partial area of ​​a display panel in a conventional display screen;

[0018] Figure 2 This is a top view of the display screen positioning and gluing device according to the first embodiment of the present invention;

[0019] Figure 3 This is a partial cross-sectional view of the display screen positioning and gluing device according to the first embodiment of the present invention (when the collecting block is in the second position);

[0020] Figure 4 This is a partial cross-sectional view of the display screen positioning and gluing device according to the first embodiment of the present invention (when the collecting block is in the first position);

[0021] Figure 5 This is a structural schematic diagram of the collecting block in the display screen positioning and gluing device according to the first embodiment of the present invention.

[0022] Description of Figure Numbers:

[0023] 1. Platen; 11. Leak hole; 12. Boss;

[0024] 21. First linear drive member; 22. Second linear drive member;

[0025] 3. Collecting block; 31. Flow channel; 311. Isosceles trapezoidal section; 312. Direct current section; 32. Chute;

[0026] 4. Sliding partition; 41. Protruding section;

[0027] 51. First limit strip; 52. Second limit strip; 53. Third limit strip; 54. Fourth limit strip;

[0028] 6. Elastic reset element;

[0029] 7. Middle frame; 71. Surrounding wall; 72. Support edge; 73. Window;

[0030] 8. Display panel;

[0031] 91. First adhesive part; 92. Second adhesive part. DETAILED DESCRIPTION

[0032] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments.

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0036] In addition, if the word "and / or" appears throughout the text, it means that three parallel solutions are included. For example, "and / or" includes solutions, or solutions, or solutions that are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that a person of ordinary skill in the art can implement them. If the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0038] Example 1

[0039] Please refer to Figures 2 to 5 , embodiment 1 of the present invention is: a display screen positioning and gluing device, used to assist in gluing the gap between the inner wall of the surrounding wall 71 of the middle frame 7 and the peripheral wall of the display panel 8 to form a second glue portion 92, and the top surface of the support edge 72 of the middle frame 7 and the bottom surface of the display panel 8 are connected through the first glue portion 91.

[0040] The display screen positioning and gluing device includes a table 1, a first driving mechanism, a second driving mechanism, a collecting block 3, a sliding partition 4 and an elastic reset member 6. The table 1 is fixed with a first limit bar 51 and a second limit bar 52. The first limit bar 51 and the second limit bar 52 are perpendicular to each other. The table 1 is also provided with a boss 12; the first driving mechanism includes a first linear driving member 21 and a third limit bar 53. The first linear driving member 21 is a cylinder or an electric push rod. The third limit bar 53 is arranged opposite to the second limit bar 52. The first linear driving member 21 connects the table 1 and the third limit bar 53 to drive the third limit bar 53 along the first limit bar 53. The second limiting bar 52 is moved closer to or away from the second limiting bar 52 in one direction; the second driving mechanism includes a second linear driving member 22 and a fourth limiting bar 54, the second linear driving member 22 is a cylinder or an electric push rod, the fourth limiting bar 54 is arranged opposite to the first limiting bar 51, the second linear driving member 22 connects the table 1 and the fourth limiting bar 54 to drive the fourth limiting bar 54 to move closer to or away from the first limiting bar 51 in a second direction, and the first direction is perpendicular to the second direction; the first limiting bar 51, the second limiting bar 52, the third limiting bar 53 and the fourth limiting bar 54 limit the placement position for placing the middle frame 7; the collecting block 3 is arranged on the The fourth limit bar 54 is located on the side of the fourth limit bar 54 close to the first limit bar 51, and a flow channel 31 is provided on the collection block 3, and the flow channel 31 includes an isosceles trapezoidal section 311 and a DC section 312. The vertical cross-section of the isosceles trapezoidal section 311 is an isosceles trapezoid, and the vertical cross-section of the DC section 312 is a rectangle. The large diameter end of the isosceles trapezoidal section 311 is connected to the top surface of the collection block 3, and the small diameter end of the isosceles trapezoidal section 311 is connected to the top of the DC section 312, and the bottom end of the DC section 312 is connected to the bottom surface of the collection block 3; the collection block 3 is also provided with a slide groove 32 connecting its two ends, and the middle area of ​​the slide groove 32 is connected to the The DC section 312; the sliding partition 4 controls the on-off state of the top end and the bottom end of the DC section 312, the sliding partition 4 can be slidably arranged in the sliding groove 32 and the end of the sliding partition 4 protrudes from the end face of the collecting block 3 to form a protruding section 41, the protruding section 41 is used to cooperate with the boss 12, and the sliding partition 4 can slide along the second direction; the elastic reset member 6 is provided in the sliding groove 32, the elastic reset member 6 contacts the sliding partition 4 and the collecting block 3 respectively, the elastic reset member 6 is used to drive the sliding partition 4 to slide toward the fourth limit strip 54, and the elastic reset member 6 can optionally be a compression spring, etc.

[0041] When the second linear drive member 22 drives the collecting block 3 to move in the direction away from the first limit bar 51 to the first preset position, the protruding section 41 contacts the boss 12; in the process of the second linear drive member 22 continuing to drive the collecting block 3 to move in the direction away from the first limit bar 51 to move from the first preset position to the second preset position, the sliding partition 4 remains stationary under the resistance of the boss 12, and the elastic reset member 6 is under pressure. At this time, the top end of the DC section 312 is connected with the bottom end of the DC section 312, and the glue in the flow channel 31 can flow out of the flow channel 31 through the bottom end of the DC section 312; in the process of the second linear drive member 22 driving the collecting block 3 to move in the direction close to the first limit bar 51 to the first preset position, the top end of the DC section 312 and the bottom end of the DC section 312 are gradually separated by the sliding partition 4 and become disconnected. At this time, the flow channel 31 can collect the glue.

[0042] To ensure force balance on the sliding partition 4, in this embodiment, both ends of the sliding partition 4 are provided with protruding sections 41. There are two protruding columns 12, and the two protruding columns 12 correspond one-to-one with the two protruding sections 41. Optionally, the protruding columns 12 are rectangular in shape and are fastened to the platform 1 by fastening screws.

[0043] It should be noted that in the actual product, the collecting block 3 is composed of multiple sub-components, and the two contacting sub-components are connected by glue, welding, fastening screws and other connection methods. The collecting block 3 composed of multiple sub-components can facilitate the processing of the flow channel 31, the slide groove 32 and the installation of the elastic reset part 6.

[0044] The bottom of the fourth limiting strip 54 is provided with an avoidance groove for avoiding the boss 12 , thereby preventing the fourth limiting strip 54 from interfering with the boss 12 when moving in a direction away from the first limiting strip 51 .

[0045] Specifically, the collection block 3 has a first position and a second position. When the collection block 3 is in the first position, the distance between the fourth limiting bar 54 and the first limiting bar 51 is at its shortest, and the middle frame 7 is clamped and limited by the first limiting bar 51, the second limiting bar 52, the third limiting bar 53, and the fourth limiting bar 54. When the collection block 3 is in the second position, the distance between the fourth limiting bar 54 and the first limiting bar 51 is at its longest, and the middle frame 7 can be taken in and out. It is easy to understand that the second position is the second preset position mentioned above.

[0046] The platen 1 is provided with a leak hole 11, which corresponds to the direct current section 312 on the collecting block 3 in the second position. When the glue dispensing device is positioned through a top-down perspective of the display screen, the projection of the direct current section 312 is located within the projection of the leak hole 11. When the top and bottom ends of the direct current section 312 are connected, the glue in the flow channel 31 can fall through the leak hole 11, thereby restoring the glue storage capacity of the flow channel 31.

[0047] By controlling the size of the collection block 3, the outline size of the vertical cross-section of the collection block 3 can be made the same as the size of the vertical surface of the window 73, so that the overflowed glue in each area of ​​the gap corresponding to the window 73 can be effectively collected by the collection block 3. Preferably, the transverse cross-sectional size of the flow channel 31 is larger than the width of the gap. When the collection block 3 is in the first position, at the window 73, the inner wall of the surrounding wall 71 and the peripheral wall of the display panel 8 are both located between the two inner wall surfaces of the flow channel 31, which can better collect the overflowed glue. At the same time, when the collection block 3 moves from the first position to the second position, the edge of the top of the flow channel 31 can also scrape off the overflowed glue in the gap, which is conducive to further improving the collection effect of the collection block 3 on the glue liquid.

[0048] In one or more embodiments, the collection block 3 is made of metal and is provided with a heating resistor wire disposed adjacent to the flow channel 31. A power supply assembly is also provided on the platen 1. The power supply assembly is electrically connected to the heating resistor wire via a perforation extending through the fourth limiting strip 54. The heating resistor wire can provide heat to the adhesive in the flow channel, thereby maintaining fluidity.

[0049] The above are only optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Display screen positioning and gluing device, characterized by: include A table top, wherein a first limiting strip and a second limiting strip are fixedly provided on the table top, wherein the first limiting strip and the second limiting strip are perpendicular to each other, and a convex column is further provided on the table top; a first driving mechanism, the first driving mechanism comprising a first linear driving member and a third limiting bar, the third limiting bar being arranged opposite to the second limiting bar, the first linear driving member connecting the platform and the third limiting bar to drive the third limiting bar toward or away from the second limiting bar along a first direction; a second driving mechanism, the second driving mechanism comprising a second linear driving member and a fourth limiting bar, the fourth limiting bar being arranged opposite to the first limiting bar, the second linear driving member connecting the platform and the fourth limiting bar to drive the fourth limiting bar to approach or move away from the first limiting bar along a second direction, the first direction being perpendicular to the second direction; the first limiting bar, the second limiting bar, the third limiting bar and the fourth limiting bar limiting a placement position for placing the middle frame; A collecting block, the collecting block being arranged on the fourth limiting strip and being located on a side of the fourth limiting strip close to the first limiting strip, the collecting block being provided with a flow channel, the flow channel comprising an isosceles trapezoidal segment and a DC segment, the large-diameter end of the isosceles trapezoidal segment being connected to the top surface of the collecting block, the small-diameter end of the isosceles trapezoidal segment being connected to the top of the DC segment, and the bottom end of the DC segment being connected to the bottom surface of the collecting block; the collecting block being further provided with a chute connecting its two ends, the middle area of ​​the chute being connected to the DC segment; a sliding partition, the sliding partition being slidably disposed in the sliding groove and having an end portion thereof protruding from an end surface of the collecting block to form a protruding section, the protruding section being adapted to cooperate with the protruding column, the sliding partition being slidable along the second direction; An elastic reset member is provided in the slide groove, the elastic reset member contacts the sliding partition and the collecting block respectively, and the elastic reset member is used to drive the sliding partition to slide toward the fourth limit strip.

2. The display screen positioning and gluing device according to claim 1, characterized in that: The vertical cross-section of the isosceles trapezoidal section is an isosceles trapezoid, and the vertical cross-section of the direct current section is a rectangle.

3. The display screen positioning and gluing device according to claim 1, characterized in that: The first linear driving component is a cylinder or an electric push rod.

4. The display screen positioning and gluing device according to claim 1, characterized in that: The second linear driving component is a cylinder or an electric push rod.

5. The display screen positioning and gluing device according to claim 1, characterized in that: The collecting block has a first position and a second position. When the collecting block is in the first position, the distance between the fourth limit bar and the first limit bar reaches the shortest state. When the collecting block is in the second position, the distance between the fourth limit bar and the first limit bar reaches the longest state. A leakage hole is provided on the table, and the leakage hole corresponds to the DC segment on the collecting block in the second position. When the gluing device is positioned through the display screen from a top-down perspective, the projection area of ​​the DC segment is located within the projection area of ​​the leakage hole.

6. The display screen positioning and gluing device according to claim 1, characterized in that: The bottom of the fourth limiting strip is provided with an avoidance groove for avoiding the convex column.

7. The display screen positioning and gluing device according to claim 1, characterized in that: Both ends of the sliding partition are protruding sections, the number of the protruding columns is two, and the two protruding columns are matched with the two protruding sections in a one-to-one correspondence.

8. The display screen positioning and gluing device according to claim 1, characterized in that: The elastic reset member is a compression spring.

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