Glue injection mold and device

Abstract

The utility model relates to a glue injection mold and device.The glue injection mold comprises a carrier plate and a side wall, the side wall is annularly arranged on one side of the periphery of the carrier plate, a bearing space for bearing a display module is defined by the side wall and the carrier plate, a plurality of glue injection holes communicating with the glue injection space are formed in the side wall, and at least two glue injection holes are formed in the two opposite sides of the side wall at intervals in the first direction; and the side walls are arranged on the same side along the second direction. According to the glue injection mold provided by the invention, the glue is synchronously injected into the display module through the plurality of glue injection holes, so that the flow speed and the flow rate of the glue injected into the glue injection space are increased, and the bad phenomena of bubbles, glue shortage and the like of the display module caused by too fast solidification of part of the glue in the flowing process of the glue are avoided; moreover, the inclination of the glue injection mold can be adjusted in the second direction, so that the position of the glue injection hole is higher than other positions, under the action of gravity, the glue injected into the display module through the glue injection hole can rapidly fill the glue injection space, and the attaching quality of the display module is improved.

Description

Technical Field

[0001] This application relates to the field of display module assembly technology, and in particular to a glue injection mold and device. Background Technology

[0002] As a simple, convenient, and natural human-computer interaction device, display modules have been widely used in various fields such as mobile phones, wearables, industrial control, automotive, and self-service terminals. A display module consists of a display panel and a cover glass. During the assembly process, liquid optical adhesive is usually injected into the bonding area between the display panel and the cover glass to integrate the display panel and the cover glass into a single unit to form the display module.

[0003] Currently, the display module is typically placed in a glue-injection mold for glue injection, and glue is poured into the mold. The flow of the glue then bonds the display panel to the cover glass. However, the current glue injection speed is too slow. During the glue flow process, some glue solidifies, resulting in defects such as air bubbles and insufficient glue in the display module, which seriously affects the bonding quality of the display module. Utility Model Content

[0004] Therefore, it is necessary to provide a glue injection mold and device to address the problems of air bubbles and insufficient glue that easily occur during the glue injection process of display modules.

[0005] A glue injection mold for injecting glue into a display module, the display module having a glue injection space for accommodating the glue, the glue injection mold comprising:

[0006] Carrier plate; and

[0007] The sidewall is arranged in a ring around one side of the periphery of the carrier plate and forms a support space for supporting the display module. The sidewall is provided with a plurality of injection holes communicating with the injection space. At least two injection holes are spaced apart on opposite sides of the sidewall along a first direction and located on the same side of the sidewall along a second direction.

[0008] The first direction is perpendicular to the second direction and is located on the connection plane between the carrier plate and the side wall.

[0009] In one embodiment, the sidewall is further provided with a plurality of first vent holes communicating with the glue injection space, and at least two of the first vent holes are located at opposite corners of the sidewall.

[0010] In one embodiment, the sidewall is further provided with a plurality of second vent holes communicating with the glue injection space, and at least two of the second vent holes are spaced apart along the second direction on opposite sides of the sidewall.

[0011] In one of the embodiments, in the first direction, the second exhaust hole is located between two glue injection holes which are spaced apart along the first direction on opposite sides of the side wall.

[0012] In one of the embodiments, a plurality of the first exhaust holes are spaced apart along a circumferential direction of the side wall.

[0013] In one of the embodiments, a plurality of the glue injection holes are spaced apart along a circumferential direction of the side wall.

[0014] In one of the embodiments, the glue injection hole has a diameter of 5-9 mm.

[0015] In one of the embodiments, in the first direction, the glue injection hole is divergent towards the bearing space.

[0016] In one of the embodiments, the carrier plate is integrally formed with the side wall.

[0017] An injection device, comprising:

[0018] The injection mold according to any one of the above technical solutions; and

[0019] An injection device, comprising:

[0020] The injection mold and device described above, the side wall is provided with a plurality of glue injection holes, when the display module is placed in the bearing space, glue can be injected into the display module through the plurality of glue injection holes, so as to accelerate the flow rate and flow of the glue injected into the injection space, avoid the display module from appearing bubbles, glue shortage and other adverse phenomena caused by the too fast solidification of part of the glue during the flow process; and at least two glue injection holes are spaced apart along the first direction on opposite sides of the side wall, and are located on the same side of the side wall along the second direction, so that the position of the glue injection hole is higher than other positions, under the action of gravity, the glue injected into the display module through the glue injection hole can quickly fill the injection space, further avoid the display module from appearing bubbles, glue shortage and other adverse phenomena, and improve the bonding quality of the display module. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure diagram of the injection mold provided in some embodiments.

[0022] Figure 2 The front view of the injection mold provided in some embodiments.

[0023] Reference signs:

[0024] 100, injection mold;

[0025] 110, carrier plate; 120, side wall; 121, glue injection hole; 122, first exhaust hole; 123, second exhaust hole; 130, bearing space. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using these specific details in other ways. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0029] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and do not indicate the only implementation.

[0032] The technical solutions provided by the embodiments of the present application will be described below with reference to the accompanying drawings.

[0033] Referring to Figure 1 As shown in the drawings, the present application provides a glue injection mold 100, which includes a carrier plate 110 and a side wall 120. The glue injection mold 100 is used to inject glue towards a display module, which has a glue injection space for accommodating glue, such as a display module including a display panel and a cover glass arranged in layers, and a glue injection space formed between the display panel and the cover glass. By injecting glue into the glue injection space, the display panel and the cover glass are bonded to form a display module.

[0034] The side wall 120 is annularly arranged on one side of the periphery of the carrier plate 110, and the side wall 120 and the carrier plate 110 form a bearing space 130. The bearing space 130 bears the display module, such as the side wall 120 protruding from one side of the carrier plate 110 to form the bearing space 130, and the bearing space 130 is a contoured chamber to accommodate the display module adaptively. The side wall 120 is provided with a plurality of glue injection holes 121, which are preferably integrally formed in the side wall 120 by injection molding, extrusion or the like, to simplify the molding process of opening the glue injection holes 121 in the side wall 120. The plurality of glue injection holes 121 are in communication with the glue injection space, so that when the display module is placed in the bearing space 130, glue can be injected simultaneously towards the display module through the plurality of glue injection holes 121 to increase the flow rate and flow of the glue injected into the glue injection space, and to avoid the display module from having air bubbles, glue deficiency and other adverse phenomena caused by the too fast solidification of part of the glue during the flow process.

[0035] And, at least two glue injection holes 121 are arranged on opposite sides of the side wall 120 along a first direction, and the two glue injection holes 121 are located on the same side of the side wall 120 along a second direction. Wherein, the first direction and the second direction are perpendicular to each other, and the first direction and the second direction are located in the connecting plane of the carrier plate 110 and the side wall 120, such as the first direction is the A direction shown in Figure 1 , and the second direction is the B direction shown in Figure 1 . In this way, the inclination of the glue injection mold 100 can be adjusted in the second direction, so that the glue injection hole 121 is higher than other positions, and under the action of gravity, the glue injected into the display module through the glue injection hole 121 can quickly fill the glue injection space, further avoiding the occurrence of air bubbles, lack of glue and other adverse phenomena in the display module, and improving the bonding quality of the display module. And, at least two glue injection holes 121 are higher than other positions, which can speed up the flow rate and flow of glue injected into the glue injection space.

[0036] In the glue injection process of the display module, air is accumulated in the glue injection space. If the air in the glue injection space is not discharged, air bubbles, lack of glue and other adverse phenomena will occur in the display module. Based on this, in an embodiment, referring to Figure 1 , the side wall 120 is also provided with a plurality of first exhaust holes 122. Preferably, the first exhaust hole 122 is integrally formed in the side wall 120 by injection molding, extrusion or the like, so as to simplify the molding process of opening the first exhaust hole 122 in the side wall 120. In this way, in the glue injection process of the display module, the glue injected into the glue injection space will squeeze the air during the flow process, and the air will be squeezed and discharged from the plurality of first exhaust holes 122, avoiding the occurrence of air bubbles, lack of glue and other adverse phenomena in the display module.

[0037] And, at least two first exhaust holes 122 are located at opposite corners of the side wall 120. Since the air will be accumulated at the opposite corners of the side wall 120 during the squeezing process, the first exhaust hole 122 arranged at the opposite corners can maximize the guarantee that there is no air accumulation in the glue injection space, further avoiding the occurrence of air bubbles, lack of glue and other adverse phenomena in the display module.

[0038] Further, referring to Figure 1 , the side wall 120 is also provided with a plurality of second exhaust holes 123. Preferably, the second exhaust hole 123 is integrally formed in the side wall 120 by injection molding, extrusion or the like, so as to simplify the molding process of opening the second exhaust hole 123 in the side wall 120. In this way, since the flow rate and flow of the glue during the flow process are accelerated, the cooperation of the plurality of second exhaust holes 123 and the plurality of first exhaust holes 122 can accelerate the discharge rate of the air in the glue injection space, guarantee that there is no air accumulation in the glue injection space, and further avoid the occurrence of air bubbles, lack of glue and other adverse phenomena in the display module.

[0039] Furthermore, at least two second exhaust ports 123 are along the second direction (e.g., Figure 1 As shown in direction B), the adhesive is spaced apart on opposite sides of the sidewall 120. Adhesive is injected into the injection space through the injection holes 121, along the first direction (e.g., direction B). Figure 1 As shown in direction A, the glue fills the injection space from both sides toward the middle position, causing most of the air to gather in the middle position of the bearing space 130. Since at least two second vent holes 123 are spaced apart along the second direction on opposite sides of the side wall 120, the air gathered in the middle position is quickly discharged from the second vent holes 123, increasing the air discharge rate and further avoiding defects such as air bubbles and insufficient glue inside the display module.

[0040] Specifically, see Figure 1 As shown, in the first direction, the second vent 123 is located between two glue injection holes 121 that are spaced apart on opposite sides of the side wall 120 along the first direction. In this way, the second vent 123 is opened as close as possible to the middle of the side wall 120, which shortens the exhaust path during the air compression process and further accelerates the exhaust rate of air in the glue injection space. No air bubbles or glue shortage will occur in the glue injection space due to air accumulation.

[0041] Further, see Figure 1 As shown, multiple first vent holes 122 are spaced apart along the circumferential direction of the sidewall 120. For example, if there are four first vent holes 122, the four first vent holes 122 are respectively located at the four opposite corners of the sidewall 120. The four first vent holes 122 can quickly discharge the air accumulated at the opposite corners of the sidewall 120, so as to ensure that there is no air accumulation in the glue injection space to the greatest extent and prevent defects such as bubbles and insufficient glue from occurring inside the display module. Furthermore, multiple first vent holes 122 can further increase the air discharge rate.

[0042] Of course, in other feasible embodiments, the number of first exhaust holes 122 can be five, six or other numbers. This application does not limit the specific number of first exhaust holes 122, as long as at least two first exhaust holes 122 are located diagonally opposite each other on the side wall 120.

[0043] In one embodiment, see Figure 1 and Figure 2 As shown, multiple injection holes 121 are spaced apart along the circumferential direction of the sidewall 120. For example, if there are four injection holes 121, they are arranged in groups of two, with two groups of injection holes 121 spaced apart along the first direction on opposite sides of the sidewall 120. In this way, by increasing the number of injection holes 121, the flow rate and volume of glue injected into the display module can be further increased, further preventing defects such as glue running or missing glue from the display module due to some glue solidifying too quickly during the flow process.

[0044] Of course, in other possible embodiments, the number of glue injection holes 121 can also be five, six or other numbers, and the specific number of glue injection holes 121 is not limited in the present application, as long as at least two glue injection holes 121 are arranged on opposite sides of the side wall 120 along the first direction, and the above two glue injection holes 121 are located on the same side of the side wall 120 along the second direction.

[0045] In an embodiment, referring to Figure 1 , the diameter of the glue injection hole 121 is 5mm-9mm, such as Figure 2 , the diameter of the glue injection hole 121 is 5mm≤D≤9mm. In this way, by setting the diameter D of the glue injection hole 121 to be between 5mm and 9mm, the glue injection hole 121 can allow connection of a larger needle diameter glue injector, so as to increase the flow rate and flow of the glue injected into the display module, and avoid the glue from solidifying too quickly during the flow process, thereby affecting the continuous pouring of the glue.

[0046] In a specific arrangement, the diameter D of the glue injection hole 121 can be any one of 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm. Of course, in other possible embodiments, the diameter D of the glue injection hole 121 can also be other values within the range of 5mm-9mm, and the specific value of the diameter D of the glue injection hole 121 is not limited in the present application.

[0047] Further, referring to Figure 1 , in the first direction, the glue injection hole 121 is gradually expanded towards the bearing space 130, and exemplarily, the glue injection hole 121 is gradually expanded from the outside of the bearing space 130 towards the inside of the bearing space 130. In this way, when the glue is injected into the glue injection space through the glue injection hole 121, the glue injection hole 121 can guide the glue injected into the glue injection space, and make the glue be injected into the glue injection space in a diverging manner, thereby avoiding the glue from gathering at the position where the glue injection hole 121 is connected with the bearing space 130, and further ensuring the smoothness of the glue injection process.

[0048] In an embodiment, referring to Figure 1 , the carrier plate 110 is integrally formed with the side wall 120. Exemplarily, the carrier plate 110 and the side wall 120 are integrally formed by injection molding, extrusion or other methods, so as to simplify the molding process of the glue injection mold 100 and improve the structural strength of the glue injection mold 100. Moreover, the carrier plate 110 and the side wall 120 are integrally formed, which can avoid the connection between the carrier plate 110 and the side wall 120 having a gap, and prevent part of the glue from overflowing to the outside through the connection gap between the carrier plate 110 and the side wall 120 during the glue injection process of the glue.

[0049] In addition, referring to Figure 1 and Figure 2As shown, the present application also provides a glue injection device, which comprises the glue injection mold 100 of the above technical solution and a glue injector. The glue injector is connected to the glue injection hole 121, and the glue injector internally stores glue for bonding the display module. The glue injector is used for injecting glue into the glue injection space. It should be noted that the glue injector is connected to the glue injection hole 121 through a glue injection pipe. The glue injection pipe injects the glue stored in the glue injector into the display module through the glue injection hole 121. Moreover, when the glue injection hole 121 is multiple, the glue injector can be one. One glue injector is connected to multiple glue injection holes 121 through multiple glue injection pipes, and the glue can be injected into the multiple glue injection holes 121 through one glue injector. When the glue injection hole 121 is multiple, the glue injector can also be multiple. Multiple glue injectors are connected to multiple glue injection holes 121 to inject glue into the corresponding multiple glue injection holes 121 through multiple glue injectors. The power requirement of each glue injector can be reduced.

[0050] The above glue injection device can inject glue into the display module through multiple glue injection holes 121 simultaneously when the display module is placed in the bearing space 130, so as to accelerate the flow rate and flow of the glue injected into the glue injection space, and avoid the display module from appearing bubbles, glue defects and other adverse phenomena caused by the too fast solidification of part of the glue during the flow process. Moreover, at least two glue injection holes 121 are arranged on the opposite sides of the side wall 120 along the first direction and on the same side of the side wall 120 along the second direction. The inclination of the glue injection mold 100 can be adjusted in the second direction, so that the position of the glue injection hole 121 is higher than other positions. Under the action of gravity, the glue injected into the display module through the glue injection hole 121 can quickly fill the glue injection space, further avoiding the display module from appearing bubbles, glue defects and other adverse phenomena, and improving the bonding quality of the display module.

[0051] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present application.

[0052] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A glue injection mold for injecting glue into a display module, the display module having a glue injection space for accommodating the glue, characterized in that, The glue injection mold comprises: a carrier plate; and a side wall arranged on one side of the periphery of the carrier plate in a ring shape and surrounding the carrier plate to form a carrying space for carrying the display module, the side wall being provided with a plurality of glue injection holes communicating with the glue injection space, at least two of the glue injection holes being arranged on opposite sides of the side wall along a first direction and on the same side of the side wall along a second direction. The first direction is perpendicular to the second direction and is located in the connecting plane of the carrier plate and the side wall.

2. The injection mold of claim 1, wherein The side wall is further provided with a plurality of first exhaust holes communicating with the glue injection space, at least two of the first exhaust holes being located at opposite corners of the side wall respectively.

3. The injection mold according to any one of claims 1 or 2, characterized in that The side wall is further provided with a plurality of second exhaust holes communicating with the glue injection space, at least two of the second exhaust holes being arranged on opposite sides of the side wall along the second direction.

4. The injection mold of claim 3, wherein In the first direction, the second exhaust hole is located between the two glue injection holes arranged on opposite sides of the side wall along the first direction.

5. The injection mold of claim 2, wherein, A plurality of the first exhaust holes are arranged along the circumferential direction of the side wall.

6. The injection mold of claim 1, wherein, A plurality of the glue injection holes are arranged along the circumferential direction of the side wall.

7. The injection mold of claim 1, wherein The diameter of the glue injection hole is 5-9 mm.

8. The injection mold of claim 1, wherein, In the first direction, the glue injection hole is tapered towards the carrying space.

9. The injection mold of claim 1, wherein, The carrier plate and the side wall are integrally formed.

10. An injection apparatus, characterized by The glue injection device comprises: the glue injection mold according to any one of claims 1-9; and a glue injector connected to the glue injection hole for injecting glue into the glue injection space.

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