Reflector plate post-processing device for LED backlight source

Abstract

The invention discloses a reflector plate post-treatment processing device for an LED backlight source, and belongs to the technical field of reflector plate processing, the reflector plate post-treatment processing device comprises a conveying assembly used for conveying reflector plates, the conveying assembly is provided with a processing assembly used for removing waste materials at punching positions of the reflector plates, and the processing assembly comprises a blanking mechanism, a cutting mechanism, an adjusting mechanism and a heating mechanism; a waste material assembly used for collecting waste materials is arranged below the machining assembly, and a detection assembly used for detecting rejection of reflector plate waste materials is arranged above the machining assembly. The punching mechanism punches waste out of a hole, the cutting mechanism can accurately cut the edge of the waste around the hole, it is guaranteed that the hole is tidy, the waste is completely separated from a reflector plate, material damage and the production reject ratio are effectively reduced, the waste removing process is faster through cooperation of the cutting mechanism and the cutting mechanism, the machining time is shortened, and the production efficiency is improved. The adjusting mechanism enables the distance between the two blanking mechanisms to be adjustable so as to adapt to reflector plates of different sizes and layouts, and the heating mechanism improves the waste removing effect.

Description

Technical Field

[0001] The invention relates to the technical field of reflector processing, and in particular to a reflector post-processing device for an LED backlight source. Background Art

[0002] With the widespread application of LED backlight sources in display devices, reflective sheets are key components, and their optical properties and manufacturing quality directly affect the overall display effect. In the production process of reflective sheets, it is usually necessary to open holes on the surface of the reflective sheets through a punching process to achieve uniform distribution and reflection of light. During the punching process, the reflective sheets are usually covered with tape to protect the material from damage or to keep the material in place during subsequent processing.

[0003] However, due to the material of the reflective sheet and the adhesion characteristics of the tape, after punching, only the hole mark is often left, and the tape is not completely penetrated. During this process, the tape remains in the hole, forming an incomplete hole, which affects the final optical effect. Therefore, further removal is required.

[0004] Due to the stickiness of the tape and the limitations of the punching process accuracy, the hole marks produced after punching cannot be automatically removed, and manual operation is required to remove the remaining tape in the hole. This process is time-consuming and labor-intensive, and it is difficult to ensure consistency in large-scale production, while increasing production costs and complexity. For this reason, we propose a post-processing processing device for reflective sheets for LED backlight sources. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a post-processing processing device for a reflective sheet for an LED backlight source. The punching mechanism punches the waste out of the holes, and the cutting mechanism can accurately cut the edges of the waste around the holes to ensure that the holes are neat and the waste is completely separated from the reflective sheet, effectively reducing material damage and production defective rate. The cooperation of the two makes the waste removal process faster, reduces processing time and improves production efficiency.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A post-processing device for a reflective sheet for an LED backlight source includes a conveying assembly for conveying the reflective sheet, the conveying assembly is provided with a processing assembly for removing waste material at a punched portion of the reflective sheet, and the processing assembly includes: The punching mechanism includes a pressing head and a supporting box, wherein the supporting box is located on the lower surface of the reflective sheet and has a punching hole on the top surface, and the pressing head is located on the top surface of the reflective sheet and directly above the punching hole, and waste materials of the reflective sheet are removed by the up and down movement of the pressing head; The cutting mechanism includes a circumferential cutting knife. The circumferential cutting knife is installed above the pressing head, and the pressing head is telescopically connected to the circumferential cutting knife up and down. When the pressing head extends downward, it protrudes from the bottom surface of the circumferential cutting knife, and when the pressing head contracts upward, it is received inside the circumferential cutting knife; The adjusting mechanism is arranged on the conveying component and connected to the blanking mechanism. There are two groups of the blanking mechanisms, and the distance between the two groups of blanking mechanisms is adjusted through the adjusting mechanism; The heating mechanism is arranged on the blanking mechanism and faces the reflector; A waste component for collecting waste is arranged below the processing component, and a detection component for detecting the rejection of reflector waste is arranged above the processing component; A vacuum pump is arranged on the waste component, and the inside of the waste component is made to be in negative pressure through the vacuum pump. The waste component is connected to the inside of the support box through a pipeline.

[0007] As a preferred solution of the post-treatment processing device for reflectors used in LED backlights according to the present invention, wherein: the conveying component includes a frame and traction rollers. There are at least two groups of traction rollers, which are respectively arranged at both ends of the frame, and each group of traction rollers has two and is distributed in parallel up and down. The processing component is located between the two groups of traction rollers.

[0008] As a preferred solution of the post-treatment processing device for reflectors used in LED backlights according to the present invention, wherein: the blanking mechanism further includes a fixing frame with a "C"-shaped cross-section. The open end of the fixing frame faces the reflector. The support box is connected to the inner bottom of the fixing frame. The pressing head is located at the upper end inside the fixing frame. A telescopic cylinder is installed on the top of the fixing frame, and the up and down movement of the pressing head is realized through the telescopic cylinder.

[0009] As a preferred solution of the post-treatment processing device for reflectors used in LED backlights according to the present invention, wherein: the cutting mechanism further includes a vertical cylinder. The circumferential cutting knife is located at the upper end inside the fixing frame and is connected to the telescopic end of the telescopic cylinder. The vertical cylinder is connected to the inner top of the circumferential cutting knife. The upper end of the pressing head is located inside the vertical cylinder and is slidably connected up and down. A support spring is connected between the top surface of the pressing head and the inner top of the vertical cylinder.

[0010] As a preferred solution of the post-treatment processing device for reflectors used in LED backlights according to the present invention, wherein: the adjusting mechanism includes a bidirectional lead screw and a positioning rod. The bottom of the fixing frame is connected with a lead screw sliding sleeve, and the top of the fixing frame is connected with a guiding cylinder. The bidirectional lead screw is rotatably arranged on the frame and is sleeved with the lead screw sliding sleeve. The positioning rod is connected to the frame and is slidably connected with the guiding cylinder. A servo motor is arranged on the top of the waste component, and the output shaft of the servo motor is in transmission connection with the bidirectional lead screw.

[0011] As a preferred solution of the post-processing device for a reflective sheet for an LED backlight source described in the present invention, the heating mechanism includes a heating wire and a fan, a wind tube facing the punching hole is penetrated through the side wall of the fixing frame, the heating wire is installed inside the wind tube, and the fan is arranged at the outer port of the wind tube with the wind direction facing the reflective sheet.

[0012] As a preferred solution of the post-processing device for a reflective sheet for an LED backlight source described in the present invention, the waste assembly comprises a negative pressure box, the vacuum pump is connected to the negative pressure box by a pipeline, the bottom of the support box is connected with a square tube, the top surface of the negative pressure box is provided with a guide hole along the movement direction of the punching mechanism, the lower end of the square tube is located inside the guide hole and is slidably connected, and the side wall of the square tube is connected with a corrugated plate covering the guide hole.

[0013] As a preferred solution of the post-processing device for a reflective sheet for an LED backlight source described in the present invention, the waste component also includes a collection box, which is movably arranged inside the negative pressure box, and the upper port of the collection box is located below the square tube, and the side wall array of the collection box inside the negative pressure box is provided with air holes.

[0014] As a preferred solution of the post-processing device for a reflective sheet for an LED backlight source described in the present invention, a guide platform is provided at the inner bottom of the support box, the guide platform is located below the punching hole, and the top surface of the guide platform is a sloped surface facing the square tube.

[0015] As a preferred solution of the post-processing device for a reflective sheet for an LED backlight source described in the present invention, the detection component includes a sensor and an alarm, a connecting frame is connected between the sensor and the fixing frame, and the output signal of the sensor is fed back to the alarm.

[0016] Compared with the prior art, the present invention can achieve the following beneficial effects: The problem of difficult efficient removal of waste after punching holes in the reflective sheet is solved by designing a punching mechanism and a cutting mechanism that cooperate with each other. The punching mechanism can exert vertical pressure at the punching position of the reflective sheet through the cooperation of the pressure head and the support box to punch out the waste from the hole. The circular cutter in the cutting mechanism can accurately cut the edge of the waste around the hole to ensure that the hole is neat and the waste is completely separated from the reflective sheet, effectively reducing material damage and production defect rate. The cooperation of the two makes the waste removal process faster, reduces processing time and improves production efficiency. The adjustment mechanism makes the spacing between the two sets of punching mechanisms adjustable to adapt to reflective sheets of different sizes and layouts. The heating mechanism can soften the reflective sheet and improve the waste rejection effect; The detection component can check the reflective sheet after rejection to ensure that the rejected products are qualified. The negative pressure design of the vacuum pump effectively collects the waste into the waste component, keeps the working area clean, reduces dependence on manual operation, and improves processing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic structural diagram of a reflective sheet post-processing device for LED backlight sources.

[0018] Figure 2 This is a schematic diagram of the traction roller of a post-processing device for a reflective sheet for an LED backlight source.

[0019] Figure 3 The present invention is a schematic diagram of a fixing frame of a post-processing device for a reflective sheet for an LED backlight source.

[0020] Figure 4 This is a schematic diagram of a support box for a post-processing device for a reflective sheet for an LED backlight source.

[0021] Figure 5 A schematic diagram of a press head of a post-processing device for a reflective sheet for an LED backlight source.

[0022] Figure 6 This is a schematic diagram of a negative pressure box in a post-processing device for a reflective sheet for an LED backlight source.

[0023] Among them: 1. Frame; 2. Traction roller; 3. Fixed frame; 4. Sensor; 5. Alarm; 6. Square tube; 7. Negative pressure box; 8. Collection box; 9. Support box; 10. Punching; 11. Telescopic cylinder; 12. Air duct; 13. Fan; 14. Bidirectional screw; 15. Servo motor; 16. Positioning rod; 17. Screw sleeve; 18. Guide cylinder; 19. Guide platform; 20. Connecting frame; 21. Circular cutting knife; 22. Vertical cylinder; 23. Support spring; 24. Pressure head; 25. Heating wire; 26. Guide hole; 27. Corrugated plate; 28. Vacuum pump; 29. ​​Air vent. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Second, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively exclusive embodiments from other embodiments. Embodiment

[0027] Please refer to Figures 1 to 6 As shown, the present invention provides a post-processing device for a reflective sheet used in an LED backlight, including a conveying assembly for conveying the reflective sheet. A processing assembly for removing the waste material at the punched holes on the reflective sheet is arranged on the conveying assembly. The conveying assembly includes a frame 1 and traction rollers 2. At least two groups of traction rollers 2 are designed and are respectively arranged at both ends of the frame 1. Each group of traction rollers 2 has two and is distributed in a parallel up-and-down manner. The processing assembly is located between the two groups of traction rollers 2; The processing assembly includes: A blanking mechanism, including a punch head 24 and a support box 9. The support box 9 is located on the lower surface of the reflective sheet and a punching hole 10 is opened on the top surface. The punch head 24 is located on the top surface of the reflective sheet and is simultaneously directly above the punching hole 10. The waste material of the reflective sheet is removed by the up-and-down movement of the punch head 24. The blanking mechanism further includes a fixing frame 3 with a "C" - shaped cross-section. The open end of the fixing frame 3 faces the reflective sheet. The support box 9 is connected to the inner bottom of the fixing frame 3. The punch head 24 is located at the upper end inside the fixing frame 3. A telescopic cylinder 11 is installed on the top of the fixing frame 3. The up-and-down movement of the punch head 24 is realized through the telescopic cylinder 11. Through the cooperation of the punch head 24 and the support box 9, the blanking mechanism can apply a vertical pressure at the punched hole of the reflective sheet to punch out the waste material from the hole; A cutting mechanism, including a circumferential cutting knife 21. The circumferential cutting knife 21 is installed above the punch head 24, and the punch head 24 is telescopically connected up and down with the circumferential cutting knife 21. When the punch head 24 extends downward, it protrudes from the bottom surface of the circumferential cutting knife 21. When the punch head 24 contracts upward, it is received inside the circumferential cutting knife 21. The cutting mechanism further includes a vertical cylinder 22. The circumferential cutting knife 21 is located at the upper end inside the fixing frame 3 and is connected to the telescopic end of the telescopic cylinder 11. The vertical cylinder 22 is connected to the inner top of the circumferential cutting knife 21. The upper end of the punch head 24 is located inside the vertical cylinder 22 and is slidably connected up and down. A support spring 23 is connected between the top surface of the punch head 24 and the inner top of the vertical cylinder 22. The circumferential cutting knife 21 in the cutting mechanism can accurately cut the edge of the waste material around the hole, ensure the neatness of the hole, make the waste material completely separated from the reflective sheet, and effectively reduce material damage and production defect rate; An adjusting mechanism is arranged on the conveying assembly and connected to the punching mechanism. The punching mechanism is designed with two groups. The spacing adjustment of the two groups of punching mechanisms is realized by the adjusting mechanism. The adjusting mechanism includes a bidirectional screw 14 and a positioning rod 16. The bottom of the fixed frame 3 is connected with a screw sleeve 17, and the top of the fixed frame 3 is connected with a guide cylinder 18. The bidirectional screw 14 is rotatably arranged on the frame 1 and is sleeved between the screw sleeve 17. The positioning rod 16 is connected to the frame 1 and is slidably connected between the guide cylinder 18. A servo motor 15 is arranged on the top of the waste assembly. The output shaft of the servo motor 15 is transmission-connected with the bidirectional screw 14. The adjusting mechanism makes the spacing between the two groups of punching mechanisms adjustable to adapt to reflective sheets of different sizes and layouts. A heating mechanism is arranged on the punching mechanism and faces the reflective sheet. The heating mechanism includes a heating wire 25 and a fan 13. A wind tube 12 facing the punching hole 10 is provided through the side wall of the fixing frame 3. The heating wire 25 is installed inside the wind tube 12. The fan 13 is arranged at the outer port of the wind tube 12 and the wind direction faces the reflective sheet. The heating mechanism can soften the reflective sheet or process specific materials to improve the waste removal effect. A waste assembly for collecting waste is provided below the processing assembly, and the waste assembly includes a negative pressure box 7, a vacuum pump 28 is connected to the negative pressure box 7 by a pipeline, a square tube 6 is provided at the bottom of the support box 9, a guide hole 26 is provided on the top surface of the negative pressure box 7 along the movement direction of the blanking mechanism, the lower end of the square tube 6 is located inside the guide hole 26 and is slidably connected, and a corrugated plate 27 covering the guide hole 26 is connected to the side wall of the square tube 6, which effectively collects waste into the waste assembly, keeps the working area clean, reduces dependence on manual operation, and improves processing speed; A detection component for detecting the removal of waste reflective sheets is arranged above the processing component. The detection component includes a sensor 4 and an alarm 5. A connecting frame 20 is connected between the sensor 4 and the fixing frame 3. The output signal of the sensor 4 is fed back to the alarm 5. The detection component can check the reflective sheet after removal to ensure that the product after removal is qualified. A vacuum pump 28 is provided on the waste assembly, and the internal negative pressure of the waste assembly is achieved by the vacuum pump 28. The waste assembly is connected to the interior of the tray 9 by a pipeline. The waste assembly also includes a collecting box 8, which is movably arranged inside the negative pressure box 7, and the upper port of the collecting box 8 is located below the square tube 6. The side wall array of the collecting box 8 located inside the negative pressure box 7 is provided with air holes 29. A guide platform 19 is provided at the inner bottom of the tray 9. The guide platform 19 is located below the punching hole 10, and the top surface of the guide platform 19 is a sloped surface facing the square tube 6. The negative pressure design of the vacuum pump 28 effectively collects waste into the waste assembly, keeps the working area clean, reduces dependence on manual operation, and improves processing speed.

[0028] The present invention reduces the reliance on manual operation, improves processing speed, precision and product consistency, while also reducing waste residue and cleaning requirements in the environment, and solves the problem of difficulty in efficiently removing waste after punching holes in the reflective sheet.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it is understandable to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A post - processing and machining device for a reflective sheet used in an LED backlight source, characterized in that: It includes a conveying component for conveying the reflective sheet. A machining component for removing the waste material at the punched holes on the reflective sheet is arranged on the conveying component. The machining component includes: A blanking mechanism, including a punch head (24) and a support box (9). The support box (9) is located on the lower surface of the reflective sheet and has a punching hole (10) on its top surface. The punch head (24) is located on the top surface of the reflective sheet and is directly above the punching hole (10) at the same time. The waste material of the reflective sheet is removed by the up - and - down movement of the punch head (24); A cutting mechanism, including a circumferential cutting knife (21). The circumferential cutting knife (21) is installed above the punch head (24), and the punch head (24) is connected with the circumferential cutting knife (21) in a vertically telescopic manner. When the punch head (24) extends downward, it protrudes from the bottom surface of the circumferential cutting knife (21). When the punch head (24) contracts upward, it is received inside the circumferential cutting knife (21); An adjusting mechanism, arranged on the conveying component and connected with the blanking mechanism. There are two groups of the blanking mechanisms, and the distance between the two groups of blanking mechanisms is adjusted through the adjusting mechanism; A heating mechanism, arranged on the blanking mechanism and facing the reflective sheet; A waste material component for collecting waste material is arranged below the machining component, and a detection component for detecting the removal of the waste material of the reflective sheet is arranged above the machining component; A vacuum pump (28) is arranged on the waste material component. The internal negative pressure of the waste material component is realized through the vacuum pump (28), and the waste material component is connected with the inside of the support box (9) through a pipeline.

2. The post - processing and machining device for a reflective sheet used in an LED backlight source according to claim 1, characterized in that: The conveying component includes a frame (1) and traction rollers (2). There are at least two groups of traction rollers (2), which are respectively arranged at both ends of the frame (1), and each group of traction rollers (2) has two and is distributed in parallel up and down. The machining component is located between the two groups of traction rollers (2).

3. The post - processing and machining device for a reflective sheet used in an LED backlight source according to claim 2, characterized in that: The blanking mechanism further includes a fixing frame (3) with a "C" - shaped cross - section. The open end of the fixing frame (3) faces the reflective sheet. The support box (9) is connected to the inner bottom of the fixing frame (3). The punch head (24) is located at the upper end inside the fixing frame (3). A telescopic cylinder (11) is installed on the top of the fixing frame (3), and the up - and - down movement of the punch head (24) is realized through the telescopic cylinder (11).

4. The post - processing and machining device for a reflective sheet used in an LED backlight source according to claim 3, characterized in that: The cutting mechanism further includes a vertical cylinder (22). The circumferential cutting knife (21) is located at the upper end inside the fixing frame (3) and is connected with the telescopic end of the telescopic cylinder (11). The vertical cylinder (22) is connected to the inner top of the circumferential cutting knife (21). The upper end of the punch head (24) is located inside the vertical cylinder (22) and is connected in a vertically sliding manner. A support spring (23) is connected between the top surface of the punch head (24) and the inner top of the vertical cylinder (22).

5. The post-processing device for a reflective sheet for an LED backlight source according to claim 3, Features: The adjustment mechanism comprises a bidirectional screw (14) and a positioning rod (16); the bottom of the fixed frame (3) is connected to a screw sleeve (17); the top of the fixed frame (3) is connected to a guide cylinder (18); the bidirectional screw (14) is rotatably arranged on the frame (1) and is sleeved with the screw sleeve (17); the positioning rod (16) is connected to the frame (1) and is slidably connected with the guide cylinder (18); a servo motor (15) is arranged on the top of the waste assembly; and the output shaft of the servo motor (15) is transmission-connected to the bidirectional screw (14).

6. The post-processing device for a reflective sheet for an LED backlight source according to claim 3, Features: The heating mechanism comprises a heating wire (25) and a fan (13); a side wall of the fixing frame (3) is penetrated by a wind tube (12) facing the punching hole (10); the heating wire (25) is installed inside the wind tube (12); and the fan (13) is arranged at an outer port of the wind tube (12) with its wind direction facing the reflector.

7. The post-processing device for a reflective sheet for an LED backlight source according to claim 1, Features: The waste assembly comprises a negative pressure box (7), the vacuum pump (28) is connected to the negative pressure box (7) by a pipeline, the bottom of the support box (9) is connected to a square tube (6), the top surface of the negative pressure box (7) is provided with a guide hole (26) along the movement direction of the punching mechanism, the lower end of the square tube (6) is located inside the guide hole (26) and is slidably connected, and the side wall of the square tube (6) is connected to a corrugated plate (27) covering the guide hole (26).

8. The post-processing device for a reflective sheet for an LED backlight source according to claim 7, Features: The waste assembly further comprises a collection box (8), the collection box (8) being movably arranged inside the negative pressure box (7), and the upper port of the collection box (8) being located below the square tube (6), and a side wall array of the collection box (8) located inside the negative pressure box (7) being provided with air holes (29).

9. The post-processing device for a reflective sheet for an LED backlight source according to claim 7, Features: A guide platform (19) is provided at the inner bottom of the support box (9), the guide platform (19) is located below the punching hole (10), and the top surface of the guide platform (19) is a sloped surface facing the square tube (6).

10. The post-processing device for a reflective sheet for an LED backlight source according to claim 3, Features: The detection component comprises a sensor (4) and an alarm (5); a connecting frame (20) is connected between the sensor (4) and the fixing frame (3); and an output signal of the sensor (4) is fed back to the alarm (5).

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