An ultra-thin light guide plate plus optical dot injection molding device
By adopting the design of vibration separation components and ejection components in the ultra-thin light guide plate injection molding device, the rapid separation and automatic mold release of the light guide plate from the mold is achieved, solving the problem of uneven stress on the light guide plate demolding, and improving the processing rate and product quality.
Patent Information
- Application Number
- CN202421178000.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-28
AI Technical Summary
During the injection molding process of ultra-thin light guide plate, the optical dots are small in size and dense, resulting in uneven stress on the outside of the mold during manual demoulding, which can easily cause mold offset and damage to the dots, affecting product quality.
An ultra-thin light guide plate plus optical dot injection molding device is designed, using vibration separation components and ejection components. The ultrasonic oscillator and electric push rod are used to achieve rapid separation and automatic mold release between the light guide plate and the mold, which increases the degree of automation of the mold release structure.
Through the automatic mold release structure, the problem of uneven stress on the demolding of the light guide plate is solved, the processing rate and product quality of the light guide plate are improved, and errors and damages in manual operation are reduced.
Smart Images
Figure CN222742059U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molding, in particular to an ultra-thin light guide plate plus optical mesh injection molding device. Background Art
[0002] The light guide plate is made of optical-grade acrylic / PC sheet, and then uses high-tech materials with extremely high refractive index and non-light absorption. Light guide points are printed on the bottom of the optical-grade acrylic sheet using laser engraving, V-shaped cross grid engraving, and UV screen printing technology. By designing various light guide points of different densities and sizes on the light guide plate, the light guide plate can emit light evenly. By using injection-molded dots at the bottom of the light guide plate, the light guide plate can radiate light from the front.
[0003] Currently, there are two ways to add optical dots to the light guide plate: printing and injection molding. When adding optical dots to the ultra-thin light guide plate by injection molding, an injection molding device is used to add raw materials to the injection mold cavity of the ultra-thin light guide plate, and the injection molding process of the optical dots on the light guide plate is completed by separating the light guide plate from the mold.
[0004] After adding optical dots to the light guide plate, the product needs to be separated from the mold. However, the optical dots are small in size and high in density. Manual demoulding can easily cause uneven force on the outside of the mold, resulting in mold displacement and dot damage, affecting product quality. Therefore, an ultra-thin light guide plate plus optical dot injection molding device is proposed to solve the problem. Utility Model Content
[0005] The utility model provides an ultra-thin light guide plate plus optical dot injection molding device to solve the problems raised by the above background technology.
[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows:
[0007] The embodiment of the utility model provides an ultra-thin light guide plate plus optical dot injection molding device, comprising an injection molding machine body, a transmission mechanism arranged in the middle of the injection molding machine body, a transmission plate slidably arranged on the top of the transmission mechanism, and a telescopic injection molding mechanism arranged on the top of the injection molding machine body, and also includes:
[0008] A vibration separation component, arranged on the top of the transmission plate, is used for vibration separation of the light guide plate on the transmission plate;
[0009] A lower mold, arranged on the top of the vibration separation assembly;
[0010] The ejector assembly is arranged in the lower mold and is used for quickly separating the light guide plate from the lower mold;
[0011] The upper template is arranged at the bottom of the telescopic injection molding mechanism and is used for pressing and shaping the top of the light guide plate.
[0012] Furthermore, the vibration separation assembly includes a plurality of springs arranged between the transmission plate and the lower mold and a plurality of ultrasonic vibrators arranged at the lower end of the lower mold.
[0013] By using the ultrasonic vibrator, the lower mold can be vibrated easily, and the spring facilitates the elastic connection between the transmission plate and the lower mold.
[0014] Furthermore, a support leg is provided between the conveying plate and the lower mold, the support leg is made of rubber material, and rubber pads are provided at both upper and lower ends of the spring.
[0015] The rubber pad and the supporting legs made of rubber material facilitate the elastic connection between the transfer plate and the lower die, and mitigate the transmission of the vibration force of the lower die to the transfer plate.
[0016] Furthermore, the ejection assembly includes an embedding groove opened on the lower mold, an electric push rod arranged in the embedding groove, a mounting plate arranged on the top of the electric push rod, and an ejection plate arranged on the top of the mounting plate.
[0017] The ejector assembly uses an electric push rod to facilitate the separation of the light guide plate in the lower mold groove from the lower mold.
[0018] Furthermore, a plate groove cooperating with the ejection plate is provided at the top of the embedding groove, and a storage groove cooperating with the electric push rod is provided at the bottom of the embedding groove.
[0019] The use of the embedded groove makes it easy to place the upper surface of the ejector plate and the lower mold groove on the same horizontal plane, which is convenient for processing the light guide plate.
[0020] Furthermore, reinforcing plates are provided on both sides of the bottom of the upper template, and a bonding sheet is provided in the middle of the lower end of the reinforcing plate.
[0021] The reinforcement plate facilitates increasing the hardness of the upper template.
[0022] Furthermore, a first release strip and a Mylar sheet are provided at one end of the upper template, and a second release strip is provided at the other end of the upper template. Both the first release strip and the second release strip are made of release paper materials.
[0023] After the light guide plate is shaped, the first release strip and the second release strip are peeled off and separated from the light guide plate.
[0024] Furthermore, a copper mesh plate is sandwiched in the middle of the upper template.
[0025] Facilitates cooling of the light guide plate in the upper template and increases the shaping speed of the light guide plate
[0026] The above solution of the utility model includes at least the following beneficial effects:
[0027] 1. The utility model can adjust the height of the mounting plate by setting the ejector assembly and extending the height of the electric push rod embedded in the groove. The electric push rod can pass the ejector plate through the embedded groove to push the upper light guide plate to move upward, and the light guide plate can be driven to move upward by the ejector plate to separate the light guide plate from the lower mold, thereby realizing the demoulding of the light guide plate, adding an automatic demoulding structure to the injection molding device, solving the problem of uneven demoulding force of the light guide plate, and improving the processing rate of the light guide plate.
[0028] 2. The utility model, by setting up a vibration separation component, facilitates the elastic connection between the transmission plate and the lower mold, applies the vibration output after the ultrasonic vibrator is energized, and the telescopic injection molding mechanism drives the upper mold plate to move upward. The vibration separation component can drive the lower mold and the light guide plate inside it to vibrate, separate the light guide plate from the surface of the mold cavity, increase the force uniformity of the light guide plate when demolding, increase the demolding integrity of the optical network points on the light guide plate, and improve the processing quality of the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a three-dimensional view of the utility model;
[0030] Figure 2 A three-dimensional view of the lower mold and the transfer plate of the utility model;
[0031] Figure 3 This is a structural cross-sectional view of the lower mold and the ejection assembly of the utility model;
[0032] Figure 4 It is a body view of the upper template in the utility model.
[0033] Description of reference numerals:
[0034] 1. Injection molding machine body; 2. Conveying mechanism; 3. Conveying plate; 4. Ultrasonic vibrator; 5. Spring; 6. Lower mold; 7. Ejector assembly; 8. Embedding groove; 9. Electric push rod; 10. Mounting plate; 11. Ejector plate; 12. Telescopic injection molding mechanism; 13. Upper mold plate; 14. Reinforcement plate; 15. First release strip; 16. Mylar plate; 17. Copper mesh plate; 18. Second release strip; 19. Support leg; 20. Rubber pad. DETAILED DESCRIPTION
[0035] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0036] like Figures 1 to 4As shown, the embodiment of the utility model provides an ultra-thin light guide plate plus optical dot injection molding device, including an injection molding machine body 1, a transmission mechanism 2 arranged in the middle of the injection molding machine body 1, a transmission plate 3 slidably arranged on the top of the transmission mechanism 2, and a telescopic injection molding mechanism 12 arranged on the top of the injection molding machine body 1, and also includes:
[0037] A vibration separation component is arranged on the top of the transmission plate 3 and is used for vibration separation of the light guide plate on the transmission plate 3;
[0038] A lower mold 6 is arranged on the top of the vibration separation assembly;
[0039] An ejector assembly is disposed through the lower mold 6 and is used for quickly separating the light guide plate from the lower mold 6;
[0040] The upper mold plate 13 is arranged at the bottom of the telescopic injection molding mechanism 12 and is used for pressing and shaping the top of the light guide plate.
[0041] It is worth noting that the injection molding machine body 1, the conveying mechanism 2, the conveying plate 3, and the telescopic injection molding mechanism 12 in this embodiment are all existing mechanisms of the light guide plate injection molding device. The injection molding machine body 1 is used for material output through the conveying mechanism 2. The telescopic injection molding mechanism 12 is the raw material input end of the injection molding machine body 1 and the hydraulic structure of the upper mold, which can press the upper mold and the lower mold together. The working principle is not repeated. The lower mold 6 of the light guide plate will be fixed on the top of the conveying plate 3. The lower mold 6 can be transported to the bottom of the telescopic injection molding mechanism 12 through the conveying mechanism 2, and the lower mold 6 can be pressed into the lower mold 6 through the telescopic injection molding mechanism 12. The material is input and the upper mold and the lower mold are extruded, and the injection molding of the light guide plate with dots is carried out at the same time; then the vibration separation component is used to vibrate the lower mold 6 to separate the finalized light guide plate body from the mold, and then the telescopic injection molding mechanism 12 is contracted to drive the upper mold plate 13 to separate from the lower mold 6; the transmission mechanism 2 moves the lower mold 6 to the outside of the injection molding machine body 1, and the ejection component is extended and ejected to separate the light guide plate body from the lower mold 6, thereby reducing the manual operation of demolding the light guide plate, facilitating the rapid removal of the light guide plate, and increasing the production quality and processing speed of the light guide plate.
[0042] like Figure 2 As shown, the vibration separation assembly includes a plurality of springs 5 arranged between the transmission plate 3 and the lower mold 6 and a plurality of ultrasonic vibrators 4 arranged at the lower end of the lower mold 6 .
[0043] like Figure 2 As shown, a support leg 19 is provided between the conveying plate 3 and the lower mold 6 , and the support leg 19 is made of rubber material. Rubber pads 20 are provided at both upper and lower ends of the spring 5 .
[0044] Among them, when the vibration separation component is in use, multiple ultrasonic vibrators 4 are externally connected to a power source. By energizing the ultrasonic vibrators 4, the vibration separation component can apply the existing ultrasonic energy propagation technology. The ultrasonic vibrators 4 can drive the lower mold 6 to vibrate as a whole, and the lower mold 6 drives the light guide plate to vibrate comprehensively, so that the light guide plate and optical dots in the lower mold 6 are quickly separated from the upper and lower mold bodies, increasing the demolding speed of the light guide plate. Through the coordinated use of the spring 5 and the rubber pad 20, the support leg 19 supports the transmission plate 3 and the lower mold 6, which is convenient for elastically connecting the lower mold 6 and the transmission plate 3, reducing the energy transmission to the transmission plate 3 when the lower mold 6 vibrates, and providing conditions for the vibration of the lower mold 6.
[0045] like Figure 3 As shown, the ejection assembly includes an embedding groove 8 opened on the lower mold 6, an electric push rod 9 arranged in the embedding groove 8, a mounting plate 10 arranged on the top of the electric push rod 9, and an ejection plate 11 arranged on the top of the mounting plate 10. The ejection assembly can separate the light guide plate product formed on the upper side of the lower mold 6 from the upper surface of the lower mold 6. When in use, the existing electric telescopic technology of the electric push rod is applied. The length extension of the electric push rod 9 can push the mounting plate 10 to pass through the embedding groove 8, push the ejection plate 11 to separate from the lower mold 6, and then the light guide plate product on the upper side of the ejection plate 11 can be separated from the mold, thereby realizing automatic demolding of the injection molding equipment.
[0046] like Figure 3 As shown, a plate groove cooperating with the ejector plate 11 is arranged at the top of the embedded groove 8, and a receiving groove cooperating with the electric push rod 9 is arranged at the bottom of the embedded groove 8. By setting the plate grooves and the receiving grooves at the upper and lower ends of the embedded groove 8, it is convenient for the electric push rod 9 to penetrate and connect with the lower mold 6, and the ejector plate 11 is embedded in the lower mold 6, so that the upper surface of the ejector plate 11 and the upper surface of the lower mold 6 are at the same horizontal height. It is worth noting that the mounting plate 10 is penetrated and connected with the ejector plate 11 through a mounting bolt.
[0047] like Figure 4 As shown, reinforcing plates 14 are provided on both sides of the bottom of the upper template 13, and a bonding sheet is provided in the middle of the lower end of the reinforcing plate 14. When the upper template 13 is pressed against the ultrasonic vibrator 4, the bonding sheet will fit with the side surface of the lower mold 6, thereby realizing a limited connection between the reinforcing plate 14 and the lower mold 6, which is convenient for the injection molding processing of the injection molding structure.
[0048] like Figure 4 As shown, a first release strip 15 and a Mylar sheet 16 are provided at one end of the upper template 13, and a second release strip 18 is provided at the other end of the upper template 13. The first release strip 15 and the second release strip 18 are both release paper materials. Release paper, also known as silicone oil paper and anti-sticking paper, can isolate sticky objects, limit the two ends of the light guide plate, and prevent the overflow of the surface light guide plate raw material. When the light guide plate is finalized, the first release strip 15 and the second release strip 18 can be peeled off from the light guide plate.
[0049] like Figure 4 As shown, a copper mesh plate 17 is sandwiched in the middle of the upper template 13, wherein part of the surface of the copper mesh plate 17 can be exposed to the outside, so as to facilitate the heat in the upper template 13 to be quickly discharged from the mold cavity and increase the shaping speed of the light guide plate.
[0050] When the embodiment of the utility model is used, the existing injection molding processing technology of optical dots on the light guide plate is first applied, and the size specifications of the light guide plate to be processed and the dot position, number and shape of the optical dots are input into the power control end of the injection molding machine body 1. The injection molding machine body 1 performs injection molding processing of the light guide plate and the optical dots. During the processing, the telescopic injection molding mechanism 12 moves the upper template 13 downward and fits it with the lower mold 6, so that the fitting pieces on both sides of the upper template 13 fit with the outer surface of the lower mold 6. Then, the existing injection molding processing technology of the light guide plate is applied to inject raw materials into the mold cavity of the lower mold 6 and the upper template 13. Through the setting of the copper mesh plate 17 in the plate body of the upper template 13, the heat of the raw materials in the cavity can be quickly transferred to the external environment, so as to realize the cooling treatment of the light guide plate. When the light guide plate is cooled, the ultrasonic vibrator 4 is turned on, and the mechanical wave generated when the ultrasonic wave works is applied. The ultrasonic vibrator 4 can transfer energy to the finalized light guide plate and optical dots. At the same time The upper mold plate 13 is slowly lifted upward by using the telescopic injection molding mechanism 12, and the lower mold 6 is elastically connected to the transmission plate 3 through the vibration separation component, so that the lower mold 6 can vibrate with the energy transfer of the ultrasonic vibrator 4, and the use of the rubber pads 20 at both ends of the spring 5 and the setting of the rubber support legs 19 between the transmission plate 3 and the lower mold 6 facilitates the light guide plate to be quickly separated from the mold cavity surface of the upper mold plate 13 and the lower mold 6; then, the material output technology of the existing injection molding device is applied, and the transmission mechanism 2 pushes the transmission plate 3 and the lower mold 6 away from the telescopic injection molding mechanism 12; then, the electric push rod 9 in the ejection assembly is used, and through the linear drive of the electric push rod 9, the electric push rod 9 can drive the mounting plate 10 to pass through the embedding groove 8 when it is extended, and the ejection plate 11 leaves the embedding groove 8, and pushes the light guide plate to separate from the lower mold 6, so that the light guide plate can be quickly removed from the lower mold 6, an automatic demolding mechanism of the light guide plate is added, the force uniformity of the light guide plate demolding is improved, and the processing quality of the injection molding device is improved.
[0051] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. An ultra-thin light guide plate plus optical dot injection molding device, comprising an injection molding machine body (1), a transmission mechanism (2) arranged in the middle of the injection molding machine body (1), a transmission plate (3) slidably arranged on the top of the transmission mechanism (2), and a telescopic injection molding mechanism (12) arranged on the top of the injection molding machine body (1), characterized in that: Also includes: A vibration separation component, arranged on the top of the transmission plate (3), and used for vibration separation of the light guide plate on the transmission plate (3); A lower mold (6) is arranged on the top of the vibration separation assembly; An ejection assembly is disposed throughout the lower mold (6) and is used for quickly separating the light guide plate from the lower mold (6); The upper mold plate (13) is arranged at the bottom of the telescopic injection molding mechanism (12) and is used for pressing and shaping the top of the light guide plate.
2. The ultra-thin light guide plate plus optical dot injection molding device according to claim 1, characterized in that: The vibration separation component comprises a plurality of springs (5) arranged between a transmission plate (3) and a lower mold (6) and a plurality of ultrasonic vibrators (4) arranged at the lower end of the lower mold (6).
3. The ultra-thin light guide plate plus optical dot injection molding device according to claim 2, characterized in that: A support leg (19) is provided between the conveying plate (3) and the lower mold (6), and the support leg (19) is made of rubber material. Rubber pads (20) are provided at both upper and lower ends of the spring (5).
4. The ultra-thin light guide plate plus optical dot injection molding device according to claim 1, characterized in that: The ejection assembly comprises an embedding groove (8) provided on the lower mold (6), an electric push rod (9) arranged in the embedding groove (8), a mounting plate (10) arranged on the top of the electric push rod (9), and an ejection plate (11) arranged on the top of the mounting plate (10).
5. The ultra-thin light guide plate plus optical dot injection molding device according to claim 4, characterized in that: The top of the embedding groove (8) is provided with a plate groove that cooperates with the ejection plate (11), and the bottom of the embedding groove (8) is provided with a storage groove that cooperates with the electric push rod (9).
6. The ultra-thin light guide plate plus optical dot injection molding device according to claim 1, characterized in that: Reinforcement plates (14) are provided on both sides of the bottom of the upper template (13), and a bonding sheet is provided in the middle of the lower end of the reinforcement plate (14).
7. The ultra-thin light guide plate plus optical dot injection molding device according to claim 6, characterized in that: A first release strip (15) and a Mylar sheet (16) are provided at one end of the upper template (13), and a second release strip (18) is provided at the other end of the upper template (13); the first release strip (15) and the second release strip (18) are both made of release paper materials.
8. The ultra-thin light guide plate plus optical dot injection molding device according to claim 7, characterized in that: A copper mesh plate (17) is sandwiched in the middle of the upper template (13).