Display module plastic-iron integrated inner window inner buckle mold and use method

Abstract

The invention relates to the technical field of injection molds, in particular to a plastic-iron integrated inner window inner buckle mold for a display module and a using method.The mold comprises a female mold assembly, a male mold assembly and an ejection system, and the female mold assembly is composed of a female mold cavity; the male mold assembly comprises a male mold core, a small sliding block capable of sliding in the lateral direction and a pitched roof capable of vertically ascending and descending and is used for achieving demolding and reversing of a product. The ejection system is composed of a push plate, linkage is achieved through an ejector pin driving mechanism, and a return pin, a spring and an inclined ejector or a sliding block are integrated to form a composite reset mechanism. By optimizing the structural design, the human resource cost of the assembling procedure of the plastic frame and the hardware back plate is effectively reduced, and meanwhile the material cost of the adhesive tape attaching technology of the connecting part of the plastic frame and the hardware back plate is remarkably reduced. According to the technical scheme, the product yield is remarkably improved, and the overall structural design also shows simple and reasonable engineering characteristics.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and in particular to a display module adhesive-iron-in-body window inward buckle mold and a use method thereof. Background Art

[0002] With the continuous advancement of display technology, display modules, as core components in electronic devices, have a direct impact on product performance and quality through their structural design and manufacturing processes. In the display module manufacturing process, integrated rubber-iron molding technology is widely used because it effectively improves product structural strength and reduces assembly steps. However, the complexity of the display module's internal window structure, particularly the design of the internal buckle structure, places higher demands on mold design and manufacturing.

[0003] At present, in the display module glue-iron integrated molding technology, the mold structure usually includes basic components such as the mother mold assembly, the male mold assembly and the ejection system. For example, CN108819116A discloses an automobile trim injection mold, whose ejection mechanism includes an ejection cylinder, an ejector fixing plate, an ejector base plate, an inclined ejector, a straight ejector and an accelerated ejection unit. The accelerated ejection unit cooperates with the inclined ejector and the straight ejector to eject the injection molded part to ensure smooth demolding of the injection molded part. CN208052456U discloses a new mold structure, including a panel, a nozzle plate, a stroke plate, a mold core module, a B plate and a bottom plate module, wherein the bottom plate module includes a bottom plate, an ejector base plate, an ejector panel and several ejectors, and a secondary ejection is achieved by spring glue to ensure successful demolding of the product.

[0004] For molding products with inward-facing structures, CN208841743U discloses an injection mold with an inclined ejector pin ejection mechanism. This mechanism includes an inclined ejector that extends obliquely through the male mold, the B plate, and an ejection stop block, and an elastic ejector device positioned between the inner sidewall of the inclined ejector and the undercut of the product. CN110355958A proposes a demolding device and mold equipment. The ejector mechanism is positioned within the male mold mechanism and can abut against the workpiece, pushing the workpiece for demolding by sliding relative to the male mold mechanism.

[0005] In response to the problem of undercut demolding in integrated rubber-iron molding, CN222178584U discloses a four-sided undercut demolding structure for an integrated rubber-iron injection mold, which includes a front mold, a rear mold, four inclined tops and four sliders. The vertical plate is driven downward by the separation of the pad and the B plate, causing the sliders to move inward synchronously. The downward movement of the B plate and the front mold exerts pressure on the inclined top rod, causing the inclined top to move inward, thereby separating the inclined top and the protrusions on the slider from the undercut of the rubber-iron product.

[0006] However, the display module integrated molding mold in the prior art still has some technical problems when processing the inner buckle structure of the inner window: first, the traditional separate assembly method of the plastic frame and the hardware back panel leads to poor sealing, which is prone to debonding and cracking, causing leakage; second, the flatness after assembly is not good, which makes assembly difficult and easily causes light leakage; third, plastic chips and / or hardware chips are easily generated during the assembly process, causing white bright spots; fourth, under high-temperature testing environment, the inner membrane material of the module expands due to heat and interferes with the side of the integrated product, resulting in a white top phenomenon of the backlight; finally, the traditional process flow is complicated, time-consuming and labor-intensive, which not only increases production costs but also reduces product yield.

[0007] Especially for display modules with an inward-facing window, existing molds often fail to effectively coordinate the lateral release of the inward-facing window with the axial ejection of the product body during the demolding process, resulting in product deformation or damage. Furthermore, the improper mold opening sequence design of existing molds makes it difficult to ensure that the interface between the metal backplate and the plastic component remains vertically stressed during demolding, further compromising product quality. Summary of the Invention

[0008] In order to solve the technical problems of the existing backlight module such as poor sealing, poor flatness, easy generation of impurities, white top caused by high temperature expansion and high process cost, and to achieve the technical effects of improving product sealing and flatness, reducing impurity generation, solving high temperature expansion problems and reducing costs, the present invention provides a display module glue-iron integrated internal window buckle mold and its use method.

[0009] The technical solution adopted by the present invention to solve its technical problems is: to provide a display module glue-iron integrated internal window inward buckle mold, including a female mold assembly, a male mold assembly and an ejection system; wherein the female mold assembly is composed of a female mold cavity, and the bottom contact surface and the side wall contact surface of the female mold cavity are respectively located at the bottom and side of the cavity, forming a basic structure for product molding; the male mold assembly includes a male mold core, and is equipped with a small slider that can slide laterally and an inclined ejector that can be lifted vertically, both of which form a matching structure with the male mold core for realizing demolding and inverted buckling of the product; the ejection system is composed of a push plate, which is linked by an ejector drive mechanism. A push rod is provided in the system, the end of which is fixedly connected to the ejector base plate, and the upper ejector plate and the ejector base plate maintain synchronous movement. In addition, the return pin, spring and inclined ejector or slider integrated on the ejector base plate form a composite reset mechanism, and the sprue needle establishes a linkage relationship with the ejector base plate through a mechanical connection to ensure stable ejection.

[0010] Preferably, the female mold assembly and the male mold assembly include a mold locking mechanism composed of an A plate and a B plate, and the B plate and the push plate form a staged mold opening structure.

[0011] Furthermore, when the mold is opened, the separation action of the push plate and the B plate is performed first, and then the separation action of the B plate and the A plate is performed.

[0012] Preferably, the inclined ejector or slider forms a linkage demoulding mechanism with the ejector base plate, which simultaneously performs the lateral demoulding of the inward buckle of the product and the axial ejection of the product body during ejection.

[0013] Furthermore, the ejector base plate synchronously drives the return pin to compress the spring through the upper ejector plate, and is reset by the spring after ejection.

[0014] Preferably, the mold withdrawal stroke of the small slider and the initial mold opening stroke of the push plate form a 1:1 synchronous motion relationship.

[0015] The present invention also provides a method for using a display module glue-iron integrated internal window inward buckle mold, comprising the following steps: S1 positioning a hardware back plate in a mother mold cavity so that its A surface contacts the bottom of the cavity, its B surface contacts the side wall of the cavity, and its C surface contacts the male mold core, the small slider and the inclined ejector at the same time; S2 injecting molten plastic through the runner after closing the mold to compositely form the plastic with the hardware back plate and the cavity; S3 opening the mold in stages: a) the push plate and the small slider synchronously retreat to complete the pre-demolding of the inward buckle; b) after reaching the specified mold opening distance, the B plate and the A plate are separated to complete the main mold opening; S4 the ejector rod drives the ejector base plate to drive: a) the inclined ejector to perform the final demolding of the product inward buckle, and b) the ejector mechanism synchronously ejects the product body and the sprue.

[0016] Furthermore, during the ejection process, the delayed ejection effect is achieved through the wedge-shaped cooperation between the inclined ejector guide groove and the ejector base plate, ensuring that the joint surface between the hardware back plate and the plastic part remains in a vertical force state during the demoulding process.

[0017] The beneficial effects of the present invention are:

[0018] By adopting the technology of the inner buckle mold with an integrated window of glue and iron, the metal back panel is directly embedded in the plastic mold frame for injection molding, so that the plastic and the metal back panel form an inner buckle connection structure, which completely solves the problem of easy debonding and cracking and leakage after assembly of the plastic frame and the hardware back panel in the prior art; due to the adoption of the one-piece molding process, the flatness of the product is greatly improved, avoiding the assembly difficulty and light leakage problems; at the same time, the one-piece molding process eliminates the plastic and metal chips generated in the traditional assembly process, effectively preventing the occurrence of white bright spot defects; in particular, the inner buckle parts around the glue frame and the film material form a reserved expansion space, so that the film material will not interfere with the side of the glue-iron integrated product and arch after high-temperature expansion, fundamentally solving the problem of white top of the backlight; in addition, the present invention also saves the process and cost of assembling and gluing the plastic frame and the hardware back panel, reduces labor costs, and greatly improves the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 these drawings without paying any creative work.

[0020] Figure 1 It is a structure diagram of a mold with an inner window surrounded by an inclined top and an inner buckle;

[0021] Figure 2 It is a structure diagram of the mold with sliders buckled inwards around the window of the display module with glue and iron inside;

[0022] The numbers in the figure represent:

[0023] 1. Hardware back plate; 2. Mother mold cavity; 3. Side A of the hardware back plate; 4. Bottom of the mother mold cavity; 5. Side B of the hardware back plate; 6. Mother mold side wall; 7. Side C of the hardware back plate; 8. Top of the male mold core; 9. Top of the small slider; 10. Top of the slanted top; 11. Top of the small slanted top; 12. Top of the slider. DETAILED DESCRIPTION

[0024] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings and embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] Example 1

[0026] Reference Figure 1 and Figure 2 As shown, this embodiment provides a display module glue-iron internal window buckle mold, including a female mold component, a male mold component and an ejection system.

[0027] The master mold assembly consists of a master mold cavity. The bottom contact surface and side wall contact surface of the master mold cavity are located at the bottom and side of the cavity respectively, and together form the basic structure for product molding. The bottom contact surface of the master mold cavity is designed to be a flat and smooth surface, which is used to fit tightly with the A side of the hardware back plate to ensure the flatness of the bottom surface of the product after molding. The side wall contact surface of the master mold cavity is designed to be perpendicular to the bottom contact surface, which is used to fit tightly with the B side of the hardware back plate to ensure the verticality and smoothness of the side of the product after molding. The overall structure of the master mold cavity is made of high-hardness mold steel material. The surface is precisely ground and mirror polished to a hardness of HRC58-62 and a surface roughness Ra value of no more than 0.2μm to ensure the surface quality of the product.

[0028] The male mold assembly consists of a core, equipped with a lateral sliding slider and a vertically movable lifter. Both components cooperate with the core to achieve undercut during demolding. The core is made of high-precision mold steel, achieving a surface hardness of HRC 60-64 and a surface roughness Ra of less than 0.1μm. The core's working surface contacts the C-surface of the metal backing, forming the basic outline of the product's internal viewing window. The slider is mounted on the side of the core and slides laterally via precision guide rails, with a precisely controlled sliding stroke of 5-10mm and a sliding resistance of no more than 50N. The slider's working surface also contacts a portion of the C-surface of the metal backing, forming the lateral forming surface for the product's inward-facing structure. The lifter is mounted at the center of the core and can be raised and lowered vertically, with a controlled lifting stroke of 8-15mm and a lifting force of no less than 200N. The lifter's working surface also contacts a portion of the C-surface of the metal backing, forming the vertical forming surface for the product's inward-facing structure.

[0029] The ejection system consists of a push plate, which is linked to the ejector drive mechanism. The system features an ejector rod, the end of which is fixedly connected to the ejector base plate. The upper ejector plate and the ejector base plate maintain synchronous movement. Furthermore, a return pin, spring, and inclined ejector or slider integrated into the ejector base plate form a composite reset mechanism. The sprue needle is mechanically linked to the ejector base plate to ensure stable ejection. The push plate is made of high-strength alloy steel, with a thickness of 15-20mm and a surface hardness of HRC45-50. Multiple ejector holes with a diameter of 3-5mm are evenly distributed on the push plate, and the hole positioning accuracy is controlled within ±0.02mm. The ejector rod is also made of high-strength alloy steel, with a diameter of 10-15mm and a length determined by the overall mold height, typically 150-200mm. One end of the ejector rod is connected to the ejection mechanism of the injection molding machine, and the other end is fixedly connected to the ejector base plate. The ejector base plate is made of high-strength alloy steel, 20-25mm thick, with a surface hardness of HRC 45-50. The upper ejector plate and base plate are synchronized by guide pins and guide sleeves. The guide pins have a diameter of 15-20mm, and the inner diameter of the guide sleeves is 0.02-0.05mm larger than the guide pin diameter, creating a precise fit. The return pin is made of high-strength alloy steel, with a diameter of 8-10mm and a length of 50-80mm, with a surface hardness of HRC 55-60. The spring is made of high-quality spring steel, with an outer diameter of 15-20mm, a wire diameter of 2-3mm, a free length of 40-60mm, and a spring constant of 5-8N / mm. The sprue needle is made of high-strength alloy steel, with a diameter of 3-5mm, a length of 80-120mm, and a surface hardness of HRC 55-60.

[0030] The female and male mold assemblies comprise a clamping mechanism consisting of plates A and B. Plate B and the push plate form a staged mold opening mechanism. Plate A is made of high-strength alloy steel, 40-50mm thick, with a surface hardness of HRC 40-45. Plate B is made of high-strength alloy steel, 35-45mm thick, with a surface hardness of HRC 40-45. A guide pin and guide sleeve form a precision guide structure between plates A and B. The guide pins have a diameter of 25-30mm, and the inner diameter of the guide sleeves is 0.03-0.06mm larger than the guide pin diameter, ensuring a precise fit. A clamping mechanism is also located between plates A and B, consisting of a clamping module and a clamping pin. The clamping module is made of high-strength alloy steel, measuring 40×40×30mm, with a surface hardness of HRC 50-55. The clamping pin is made of high-strength alloy steel, with a diameter of 15-20mm, a length of 60-80mm, and a surface hardness of HRC 55-60. A limit mechanism is installed between the B plate and the push plate, including a limit post and a limit sleeve. The limit post is made of high-strength alloy steel, with a diameter of 20-25mm, a length of 60-80mm, and a surface hardness of HRC50-55. The limit sleeve is also made of high-strength alloy steel, with an inner diameter 0.05-0.08mm larger than the limit post diameter, forming a clearance fit.

[0031] During mold opening, the push plate and B plate separate first, followed by the B plate and A plate. This separation is achieved by the ejector mechanism of the injection molding machine, driving the ejector pin. The separation stroke is controlled within a range of 20-30mm, and the separation speed is controlled within a range of 10-15mm / s. The separation of the B plate and A plate is also driven by the mold opening mechanism of the injection molding machine. The separation stroke is controlled within a range of 50-80mm, and the separation speed is controlled within a range of 20-30mm / s. This staged mold opening design ensures smooth demolding of the internal buckle structure, preventing product deformation and damage.

[0032] The inclined ejector or slider forms a linked demolding mechanism with the ejector base plate, simultaneously ejecting the product from the lateral position and the axial direction during ejection. An inclined guide post is located between the inclined ejector and the ejector base plate. The guide post has an inclination angle of 15-20 degrees, a length of 60-80mm, a diameter of 15-20mm, and a surface hardness of HRC 55-60. When the ejector base plate moves vertically, the inclined guide post converts this vertical motion into tilting motion for the inclined ejector, achieving lateral demolding of the product from the lateral position. A connecting rod is located between the slider and the ejector base plate. This connecting rod has a length of 40-60mm, a cross-sectional dimension of 10×15mm, and a surface hardness of HRC 50-55. When the ejector base plate moves vertically, the connecting rod converts this vertical motion into horizontal motion of the slider, achieving lateral demolding of the product from the lateral position. At the same time, multiple ejectors are installed on the ejector base plate. The ejector diameter is 3-5mm, the length is 80-120mm, and the surface hardness reaches HRC55-60. They are used for axial ejection of the product body.

[0033] The ejector base plate synchronously drives the return pin to compress the spring through the upper ejector plate, and is reset by the spring after ejection. The upper ejector plate and the ejector base plate maintain synchronous movement through the guide pin and guide sleeve. The diameter of the guide pin is 15-20mm, and the inner diameter of the guide sleeve is 0.02-0.05mm larger than the diameter of the guide pin, forming a precise fit. One end of the return pin is fixed to the ejector base plate, and the other end passes through the through hole on the B plate and contacts the spring. One end of the spring rests on the end of the return pin, and the other end rests on the step surface on the B plate. When the ejector base plate moves forward, the return pin moves forward with it, compressing the spring, and the spring stores elastic potential energy. When ejection is completed, the ejection mechanism of the injection molding machine retracts, and the spring releases the elastic potential energy, pushing the return pin and the ejector base plate back to the initial position, completing the reset process.

[0034] The demoulding stroke of the small slider and the initial mold opening stroke of the push plate form a 1:1 synchronous motion relationship. A connecting rod mechanism is set between the small slider and the push plate. The connecting rod length is 50-70mm, the cross-sectional size is 12×18mm, and the surface hardness reaches HRC50-55. One end of the connecting rod is hinged to the small slider, and the other end is hinged to the push plate. The hinge point adopts a high-precision bearing structure with an inner diameter of 8-10mm and an outer diameter of 15-18mm to ensure smooth movement without jamming. When the push plate moves backward, the small slider is driven to move sideways through the connecting rod mechanism, and the motion stroke ratio of the two is 1:1. This synchronous motion relationship design ensures the smooth demoulding of the inner buckle structure and avoids product deformation and damage.

[0035] In one embodiment, an innovative structure and molding process of an injection mold without glue holes are provided. The specific implementation process is as follows: First, the metal back plate is accurately positioned inside the male mold core cavity, wherein the A surface of the metal back plate is in surface contact with the bottom of the male mold core cavity, and the C surface is precisely matched with the top of the male mold core. After the back plate is positioned, the mold is locked by the hydraulic clamping system of the fixed mold base plate and the movable mold base plate. Subsequently, under precise temperature control conditions, the molten engineering plastic is injected into the mold cavity through the hot runner system. Under the action of pressure maintenance, the melt is compositely co-molded with the metal back plate and the surface of the mold cavity. During this process, the molten plastic and the surface of the metal back plate are infiltrated and bonded. After the molding cycle is completed, the mold executes the parting surface separation procedure: the movable mold base plate moves backward according to the preset mold opening curve. After reaching the maximum mold opening stroke, the ejection mechanism is started - the ejector rod drives the ejector base plate to link the upper ejector plate, reset assembly, elastic element and ejector block to move in a coordinated manner, thereby realizing the automated and precise ejection and demolding of the workpiece.

[0036] Example 2

[0037] A method for using a display module adhesive-iron-internal window inward buckle mold, using the display module adhesive-iron-internal window inward buckle mold described in Example 1, comprising the following steps:

[0038] S1 positions the metal back plate in the female mold cavity so that its A surface contacts the cavity bottom, B surface contacts the cavity side wall, and C surface contacts the male mold core, small slider, and inclined top at the same time;

[0039] The metal back plate is made of high-quality stainless steel with a thickness of 0.8-1.2mm. The surface is precision stamped and surface treated, and the surface roughness Ra value does not exceed 0.4μm. The A surface of the metal back plate is flat and fits tightly with the contact surface at the bottom of the mother mold cavity; the B surface is the side wall surface perpendicular to the A surface and fits tightly with the contact surface of the side wall of the mother mold cavity; the C surface is the inner window area and contacts the working surface of the male mold core, the small slider and the inclined top at the same time. During the positioning of the metal back plate, first place the A surface of the metal back plate face down into the mother mold cavity so that the A surface is completely in contact with the bottom contact surface of the cavity, and then adjust the position of the metal back plate so that the B surface is completely in contact with the side wall contact surface of the cavity. The positioning accuracy is controlled within the range of ±0.05mm to ensure the accurate positioning of the metal back plate in the mold.

[0040] After S2 closes the mold, molten plastic is injected through the runner to form a composite with the metal back plate and the cavity;

[0041] The mold closing process is driven by the mold closing mechanism of the injection molding machine. The mold closing force is controlled within the range of 500-800 tons, and the mold closing speed is controlled within the range of 50-80mm / s. After the mold is closed, the working surfaces of the core, small slider, and inclined top are in close contact with the C-surface of the hardware back plate, forming the molding cavity in the inner window area. The molten plastic is injected into the molding cavity through the main channel, branch channel, and gate. The injection pressure is controlled within the range of 80-120MPa, and the injection speed is controlled within the range of 50-80cm / s. 3 / s, and the injection temperature is controlled within the range of 220-260°C. After the molten plastic fills the mold cavity, it forms a strong mechanical bond with the metal backing, while also creating a smooth surface on the cavity surface. The holding time is controlled between 5-10 seconds, the holding pressure is controlled between 60-90MPa, the cooling time is controlled between 15-25 seconds, and the cooling water temperature is controlled between 15-25°C.

[0042] S3 staged mold opening:

[0043] a) The push plate and the small slider move backward synchronously to complete the inner buckle pre-demolding;

[0044] b) After reaching the limited mold opening distance, plate B is separated from plate A to complete the main mold opening;

[0045] The staged mold opening process begins with the ejector mechanism of the injection molding machine driving the ejector pin, which moves the push plate backward. Simultaneously, the push plate's backward movement drives the small slider sideways via a connecting rod mechanism, with a 1:1 travel ratio. The push plate's backward travel is controlled within a range of 20-30mm, at a speed of 10-15mm / s. The small slider's lateral travel is controlled within a range of 20-30mm, at a speed of 10-15mm / s. This stage completes the pre-demolding of the internal buckle, separating the product's internal buckle structure from the small slider. When the push plate retreats to a defined position, the limit switch is triggered, and the injection molding machine's mold opening mechanism begins to separate plate B from plate A. The separation distance of plates B and A is controlled within a range of 50-80mm, at a speed of 20-30mm / s. This stage completes the main mold opening, separating the product from the core.

[0046] S4 ejector drives the ejector base plate to drive:

[0047] a) The inclined top performs the final demoulding of the product inward buckle

[0048] b) The ejector mechanism ejects the product body and the nozzle synchronously.

[0049] The ejector rod drives the ejector base plate to move forward. The movement stroke of the ejector base plate is controlled within the range of 30-40mm, and the movement speed is controlled within 15-20mm / s. While the ejector base plate moves forward, the inclined ejector is driven by the inclined guide column structure to perform an inclined movement to complete the final demolding of the product's inner buckle. The movement stroke of the inclined ejector is controlled within the range of 8-15mm, and the movement speed is controlled within 8-12mm / s. At the same time, the ejector installed on the ejector base plate moves forward to eject the product body. The movement stroke of the ejector is the same as that of the ejector base plate, which is 30-40mm. The sprue needle also moves forward with the ejector base plate to eject the injection sprue. The movement stroke of the sprue needle is the same as that of the ejector base plate, which is 30-40mm. After the product is ejected, it is removed by a robot or manually to complete an injection molding cycle.

[0050] During the ejection process, the wedge-shaped structure of the inclined guide groove and the ejector base plate achieves a delayed ejection effect, ensuring that the interface between the hardware backplate and the plastic part remains vertically stressed during demolding. The inclined guide groove is manufactured using high-precision machining techniques, with a groove width of 15-20mm, a groove depth of 10-15mm, and a groove wall surface roughness (Ra) of no more than 0.2μm. The inlet of the inclined guide groove is designed as a straight section with a length of 10-15mm; the middle section is designed as a curved section with a radius of curvature of 50-80mm and a length of 20-30mm; and the outlet is designed as a straight section with a length of 15-20mm. The wedge structure on the ejector base plate is made of high-strength alloy steel, with a wedge angle of 15-20 degrees, a length of 30-40mm, and a width of 14-19mm. The surface hardness reaches HRC 55-60, and the surface roughness (Ra) does not exceed 0.2μm. As the ejector base moves forward, the wedge-shaped structure moves along the ejector guide groove. The ejector remains stationary in the straight section, slowly moves in the curved section, and accelerates in the straight section at the exit. This delayed ejection design ensures that the interface between the metal backplate and the plastic part remains vertically stressed during demolding, preventing product deformation and damage caused by shear forces.

[0051] It should be noted that both the first embodiment and the second embodiment are a type of display module adhesive-iron internal window buckle mold.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A display module glue iron internal window buckle mold, characterized in that: include: A female mold assembly, a male mold assembly, and an ejection system; wherein the female mold assembly is composed of a female mold cavity, and the bottom contact surface and side wall contact surface of the female mold cavity are located at the bottom and side of the cavity respectively, together forming the basic structure for product molding; The male mold assembly includes a male mold core, and is equipped with a small slider that can slide laterally and a tilted top that can be lifted vertically. Both of them form a matching structure with the male mold core to achieve demoulding and undercutting of the product. The ejection system consists of a push plate, which is linked to the ejector drive mechanism. The system is equipped with an ejector rod, the end of which is fixedly connected to the ejector base plate. At the same time, the upper ejector plate and the ejector base plate maintain synchronous movement. In addition, the return pin, spring and inclined ejector or slider integrated on the ejector base plate form a composite reset mechanism, and the sprue needle is linked to the ejector base plate through a mechanical connection to ensure stable ejection.

2. The display module adhesive-iron internal window buckle mold according to claim 1, characterized in that: The female mold assembly and the male mold assembly include a mold locking mechanism composed of an A plate and a B plate, and the B plate and the push plate form a staged mold opening structure.

3. The display module adhesive-iron internal window buckle mold according to claim 2, characterized in that: When the mold is opened, the push plate and the B plate are separated first, and then the B plate and the A plate are separated.

4. The display module adhesive-iron internal window buckle mold according to claim 1, characterized in that: The inclined ejector or slider and the ejector base plate form a linked demoulding mechanism, which simultaneously performs the lateral demoulding of the inward buckle of the product and the axial ejection of the product body during ejection.

5. The display module adhesive-iron internal window buckle mold according to claim 1, characterized in that: The ejector base plate synchronously drives the return pin to compress the spring through the upper ejector plate, and is reset by the spring after ejection.

6. The display module adhesive-iron internal window buckle mold according to claim 1, characterized in that: The mold withdrawal stroke of the small slider and the initial mold opening stroke of the push plate form a 1:1 synchronous motion relationship.

7. A method for using a display module adhesive-iron-internal window inward buckle mold, the method using the display module adhesive-iron-internal window inward buckle mold according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1 positions the metal back plate in the female mold cavity so that its A surface contacts the cavity bottom, B surface contacts the cavity side wall, and C surface contacts the male mold core, small slider, and inclined top / slider at the same time; After S2 closes the mold, molten plastic is injected through the runner to form a composite with the metal back plate and the cavity; S3 staged mold opening: a) The push plate and the small slider move backward synchronously to complete the inner buckle pre-demolding; b) After reaching the limited mold opening distance, plate B is separated from plate A to complete the main mold opening; S4 ejector drives the ejector base plate to drive: a) The inclined top performs the final demoulding of the product b) The ejector mechanism ejects the product body and the nozzle synchronously.

8. The method for using the display module adhesive-iron internal window buckle mold according to claim 7, characterized in that: During the ejection process, the delayed ejection effect is achieved through the wedge-shaped cooperation between the inclined ejector guide groove and the ejector base plate, ensuring that the joint surface between the hardware back plate and the plastic part remains in a vertical force state during the demoulding process.

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