Three-time bending die for display backboard frame

Abstract

The utility model relates to a display backboard frame three-time bending die, which comprises an upper die and a lower die, the upper die comprises a first die holder, a first template and a first stripping plate, and the first die holder is provided with a stop plate on the outer side of the first stripping plate; the lower die comprises a second die base, a second stripping plate and a second die plate, a plurality of first sliding blocks are arranged on the edge of the second stripping plate, the first sliding blocks are movably connected with the lower supporting plate through a plurality of pull pins, the second die base is provided with a first slotting tool, and the first sliding blocks are in transmission connection with the first slotting tool; during mold closing, the first slotting tool drives the first sliding block to move towards the stopping plate, the stopping plate moves downwards relative to the first stripping plate, the edge of the display back plate is bent downwards to form a third bent part, and the first bent part and the second bent part of the edge of the display back plate move into a first avoiding groove of the first sliding block; the first spring pulls the first sliding block to be separated from the edge of the display backboard. According to the utility model, the edge of the display backboard is bent downwards to form the C-shaped frame, so that the bending accuracy and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of display manufacturing mold technology, and in particular to a three-fold bending mold for the back panel frame of a display. Background Technology

[0002] In the monitor manufacturing industry, the monitor back panel, as one of the important structural components of a monitor, has a crucial impact on the overall quality, appearance, and stability of the monitor due to the shape and precision of its bezel. With the continuous development of monitor technology and the increasing demands for monitor quality, large-screen monitors, such as commercial displays and educational displays, are becoming increasingly larger and heavier, while simultaneously requiring thinness, style, and compactness. This necessitates further improvements in the overall structural strength of the back panel, and the traditional L-shaped bezel formed by two bends can no longer meet these requirements. Furthermore, in the bending process of monitor back panels, to improve production efficiency and ensure product quality consistency, higher demands are placed on the automation and production efficiency of the bending dies. This makes the bending dies prone to problems such as uneven bending and difficult demolding when handling complex bending tasks, requiring frequent downtime for debugging and maintenance, resulting in low production efficiency.

[0003] Therefore, in order to overcome the above-mentioned technical problems, it is necessary to design a three-fold bending mold for the back panel bezel of the display to meet the higher production requirements of existing display back panels. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a three-fold bending mold for the back panel bezel of a display.

[0005] This utility model provides a three-fold bending mold for a display back panel bezel, comprising an upper mold and a lower mold. The upper mold includes a first mold base, a first template, and a first stripper plate. The first template is floatingly mounted below the first mold base, and the first stripper plate is fixed below the first template. A stop plate is provided on the outer side of the first stripper plate from the first mold base. The lower mold includes a second mold base, a second stripper plate, and a second template. The second stripper plate is floatingly mounted above a pad, and the second template is fixed above the second stripper plate. Multiple first sliders cooperating with the stop plate are provided on the edge of the second stripper plate. The first sliders are movably connected to a lower support plate via multiple pull pins equipped with first springs. A first insert is provided on the second mold base towards the first sliders, and the first sliders are driven by the first insert via an inclined surface. When the mold is closed, the first insert drives the first sliders to move towards the stop plate, and the stop plate moves downward relative to the first stripper plate, bending the edge of the display back panel downward to form a third bend. The first and second bends of the display back panel edge move into the first recessed groove of the first slider. When the mold is opened, the first spring pulls the first slider to separate from the edge of the display back panel.

[0006] In some embodiments, a bending block is fixed to the lower end face of the stop plate, the stop plate has a bending arc surface near the edge of the first release plate, and the bending block has a slope surface that transitions with the bending arc surface. When the mold is closed, the edge of the display back plate contacts the bending block and the stop plate in sequence.

[0007] In some embodiments, the upper mold further includes a first clamping plate fixed above the first template, and a first gap between the first clamping plate and the first mold base; the lower mold further includes a pad and a second clamping plate, the pad being fixed above the second mold base, the second clamping plate being installed below the second ejector plate, and a second gap between the second clamping plate and the pad, the first gap being smaller than the second gap.

[0008] In some embodiments, the second stripper is provided with a plurality of first sliders at positions corresponding to the first long side, the first short side, and the second short side of the display back panel. The first sliders cooperate with the stop plate to form a C-shaped frame of the first long side, the first short side, and the second short side of the display back panel.

[0009] In some embodiments, the second stripper is provided with a plurality of second sliders at a position corresponding to the second long side of the display back panel, and the second sliders cooperate with the stop plate to form an L-shaped frame of the second long side of the display back panel.

[0010] In some embodiments, the second slider is connected to the edge of the second ejector plate via an inclined guide groove. A second clearance groove is provided on the outer wall of the second slider. An ejector pin is provided below the second slider. A second spring is provided below the ejector pin. The second spring acts on the ejector pin and the second mold base respectively. When the mold is closed, the U-shaped edge of the display back plate falls into the second clearance groove. When the mold is opened, the ejector pin pushes the second slider to move along the inclined guide groove under the action of the second spring.

[0011] In some embodiments, the second template is provided with a clearance space above the second slider.

[0012] In some embodiments, the inclined guide groove is positioned at a 15° angle at the edge of the second stripper plate.

[0013] In some embodiments, the second release plate has two first sliders on the edge corresponding to the first long side of the display back panel. The two first sliders are connected by a dovetail groove and a locking block. The dovetail groove is arranged along the thickness direction of the first slider.

[0014] In some embodiments, the first slider has an elongated hole extending through it along the thickness direction, and a limiting bolt connected to the second clamping plate is disposed in the elongated hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: the first template is installed in a floating manner below the first mold base, so that the stop plate can move downward relative to the first template, bending the edge of the display back panel downward into the third bend. The first clearance groove of the first slider provides clearance for the first bend and the second bend of the edge of the display back panel. The second ejector plate is installed in a floating manner above the pad, so that the first insert can have enough distance to drive the first slider to move laterally, so that the C-shaped frame of the display back panel can be smoothly demolded from the second ejector plate, improving the accuracy and quality of bending. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the display back panel bezel three-fold bending mold in the mold opening state according to an embodiment of this application.

[0017] Figure 2 This is a front view structural diagram of the display back panel bezel three-fold bending mold in the mold-closed state according to an embodiment of this application.

[0018] Figure 3 This is a side view of the display back panel bezel three-fold bending mold in the mold-closed state according to an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the planar structure of the display back panel according to an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the planar structure of the second ejector plate according to an embodiment of this application.

[0021] Reference numerals: 11. First mold base; 12. First clamping plate; 13. First template; 14. First ejector plate;

[0022] 21. Stop plate; 22. Bending arc surface; 23. Bending pressure block; 24. Sloping surface;

[0023] 31. Second mold base; 32. Backing plate; 33. Second clamping plate; 34. Second ejector plate; 35. Second template;

[0024] 4. First slider; 41. First clearance groove; 42. First insert; 43. Inclined surface; 44. First spring; 45. Pull pin; 46. Dovetail groove; 47. Locking block; 48. Oblong hole; 49. Limiting bolt;

[0025] 5. Second slider; 51. Second clearance groove; 52. Inclined guide groove; 53. Ejector pin; 54. Second spring; 55. Clearance position;

[0026] 9. Monitor back panel; 91. First long side; 92. First short side; 93. Second long side; 94. Second short side; 95. First bend; 96. Second bend; 97. Third bend; 901. C-shaped bezel; 902. L-shaped bezel; 903. U-shaped edge;

[0027] 101. First gap; 102. Second gap. Detailed Implementation

[0028] The specific embodiments of this utility model are described with reference to the accompanying drawings.

[0029] refer to Figure 1 The figure shows a front view of the three-fold bending mold for the back panel 9 of the display in the open state. The upper and lower molds process the back panel 9 of the display by stamping. The stop plate 21 of the upper mold bends the edge of the back panel 9 of the display downward to form the third bending part 97. Before this, the edge of the back panel 9 of the display has been bent twice to form the first bending part 95 and the second bending part 96. The first bending part 95 and the second bending part 96 are L-shaped. Through the third bending process of this application, the edge of the back panel 9 of the display can be formed into a C-shaped frame 901.

[0030] refer to Figures 1 to 5A three-fold bending mold for a display back panel 9 includes an upper mold and a lower mold. The upper mold includes a first mold base 11, a first template 13, and a first ejector plate 14. The first template 13 is floatingly mounted below the first mold base 11, and the first ejector plate 14 is fixed below the first template 13. A stop plate 21 is provided on the outer side of the first ejector plate 14 of the first mold base 11. The lower mold includes a second mold base 31, a second ejector plate 34, and a second template 35. The second ejector plate 34 is floatingly mounted above a pad 32, and the second template 35 is fixed above the second ejector plate 34. Multiple first sliders 4 cooperating with the stop plate 21 are provided on the edge of the second ejector plate 34. The slider 4 is movably connected to the lower support plate via multiple pull pins 45 with first springs 44 installed. The second mold base 31 is provided with a first insert 42 at the first slider 4. The first slider 4 is connected to the first insert 42 via an inclined surface 43. When the mold is closed, the first insert 42 drives the first slider 4 to move towards the stop plate 21. The stop plate 21 moves downward relative to the first release plate 14, bending the edge of the display back plate 9 downward to form a third bend 97. The first bend 95 and the second bend 96 of the edge of the display back plate move into the first relief groove 41 of the first slider 4. When the mold is opened, the first spring 44 pulls the first slider 4 to separate from the edge of the display back plate 9.

[0031] The display back panel 9 bezel three-fold bending mold of this application has a first template 13 floatingly installed below the first mold base 11, so that the stop plate 21 can move downward relative to the first template 13 to bend the edge of the display back panel 9 downward into the third bend 97. The first clearance groove 41 of the first slider 4 provides clearance for the first bend 95 and the second bend 96 of the edge of the display back panel 9. The second ejector plate 34 floatingly installed above the pad plate 32 allows the first insert 42 to have sufficient distance to drive the first slider 4 to move laterally, so that the C-shaped bezel 901 of the display back panel 9 can be smoothly demolded from the second ejector plate 34, improving the accuracy and quality of bending.

[0032] In order to bend the edge of the display back panel 9, in this embodiment, reference is made to Figures 1 to 3 The lower end face of the stop plate 21 is fixed with a bending pressure block 23. The stop plate 21 is provided with a bending arc surface 22 near the edge of the first release plate 14. The bending pressure block 23 is provided with a slope surface 24 that transitions with the bending arc surface 22. When the mold is closed, the edge of the display back plate 9 contacts the bending pressure block 23 and the stop plate 21 in sequence.

[0033] Understandably, with this configuration, the bending length of the third bending section 97 is relatively large. The bending pressure block 23 first contacts the edge of the monitor back panel 9, and then the bending arc surface 22 of the stop plate 21 contacts the edge of the monitor back panel 9. By pushing the edge of the monitor back panel 9 downward through at least two points, the bending quality is improved.

[0034] In order to coordinate the opening and closing of the mold, in this embodiment, reference is made to Figures 1 to 3 The upper mold also includes a first clamping plate 12, which is fixed above the first template 13. There is a first gap 101 between the first clamping plate 12 and the first mold base 11. The lower mold also includes a pad 32 and a second clamping plate 33. The pad 32 is fixed above the second mold base 31. The second clamping plate 33 is installed below the second release plate 34. There is a second gap 102 between the second clamping plate 33 and the pad 32. The first gap 101 is smaller than the second gap 102.

[0035] Understandably, with this configuration, the horizontal extension and retraction stroke of the first slider 4 is longer than the stroke of the stop plate 21 when bending the edge of the display back panel 9. By increasing the second gap 102, it is ensured that the first insert 42 can drive the first slider 4 to extend and retract sufficiently, so as to avoid the display back panel 9 from colliding with the second ejector plate 34 during demolding, and thus the display back panel 9 can be demolded smoothly.

[0036] In order to form a C-shaped bezel 901 on the display back panel 9, in this embodiment, reference is made to... Figure 4 and Figure 5 The second stripper plate 34 is provided with multiple first sliders 4 at positions corresponding to the first long side 91, the first short side 92, and the second short side 94 of the display back plate 9. The first sliders 4 cooperate with the stop plate 21 to form the C-shaped frame 901 of the first long side 91, the first short side 92, and the second short side 94 of the display back plate 9.

[0037] Understandably, with this configuration, the first long side 91, the first short side 92, and the second short side 94 of the four edges of the monitor back panel 9 are all formed into C-shaped bezels 901. The C-shaped bezels 901 are formed by setting multiple first sliders 4 at corresponding positions on the second release plate 34.

[0038] In order to form an L-shaped bezel 902 on the display back panel 9, in this embodiment, reference is made to... Figure 4 and Figure 5 The second stripper plate 34 is provided with a plurality of second sliders 5 at a position corresponding to the second long side 93 of the display back plate 9. The second sliders 5 cooperate with the stop plate 21 to form the L-shaped frame 902 of the second long side 93 of the display back plate 9.

[0039] Understandably, with this setup, multiple second sliders 5 are set at positions corresponding to the second long side 93 of the second stripper plate 34 and the second long side 93 of the display back plate 9, so that the second sliders 5 cooperate with the stop block of the upper mold to form an L-shaped frame 902. The second long side 93 needs to be bent three times. The first two bends form a U-shaped edge 903, and the third downward bend forms an L-shaped frame 902.

[0040] In order for the L-shaped bezel 902 of the display back panel 9 to be smoothly demolded from the second release plate 34, in this embodiment, reference is made to Figure 3 and Figure 5 The second slider 5 passes through the inclined guide groove 52 and the edge of the second ejector plate 34. The outer wall of the second slider 5 is provided with a second clearance groove 51. The second slider 5 is provided with an ejector pin 53 below it. The ejector pin 53 is provided with a second spring 54 below it. The second spring 54 acts on the ejector pin 53 and the second mold base 31 respectively. When the mold is closed, the U-shaped edge 903 of the display back plate 9 falls into the second clearance groove 51. When the mold is opened, the ejector pin 53 pushes the second slider 5 to move along the inclined guide groove 52 under the action of the second spring 54.

[0041] Understandably, with this configuration, the second long side 93 of the display back panel 9 is bent into an L-shaped frame 902 under the pressure of the stop plate 21 and the second slider 5. The U-shaped edge 903 at the end moves to the second relief groove 51. When the mold is opened, the second slider 5 moves obliquely upward along the inclined guide groove 52 under the push of the ejector pin 53 and the second spring 54, so that the U-shaped edge 903 is separated from the second relief groove 51. This ensures that the second long side 93 of the display back panel 9 will not interfere with the second slider 5 when it is demolded, thus achieving smooth demolding.

[0042] In order to allow the second slider 5 sufficient room to move, in this embodiment, reference is made to... Figure 3 The second template 35 has a clearance 55 above the second slider 5.

[0043] Understandably, with this configuration, the first template 13 is located in the travel direction of the second slider 5. When the mold is opened, the ejector pin 53 will push the second slider 5 to move towards the first template 13. By opening the clearance 55 in the travel direction of the second slider 5, the second slider 5 will not be obstructed by the second template 35 during its movement, so that the second slider 5 can separate from the L-shaped frame 902 during the mold opening process.

[0044] In order to quickly disengage the second slider 5 from the display backplate 9, in this embodiment, reference is made to... Figure 3 The inclined guide groove 52 is set at an angle of 15° at the edge of the second stripper plate 34.

[0045] Understandably, with this configuration, the thickness of the U-shaped edge 903 is smaller than its length, and the 15° inclined guide groove 52 can better guide the second slider 5 to quickly separate from the U-shaped edge 903, thus improving the efficiency of mold opening and closing.

[0046] To improve the stability of the first slider 4, in this embodiment, reference is made to... Figure 5The second release plate 34 has two first sliders 4 on the edge corresponding to the first long side 91 of the display back plate 9. The two first sliders 4 are connected by a dovetail groove 46 and a locking block 47. The dovetail groove 46 is arranged along the thickness direction of the first slider 4.

[0047] Understandably, with this configuration, the first slider 4 moves laterally horizontally under the drive of the first insert 42. The dovetail groove 46 and the locking block 47 are set along the thickness direction of the first slider 4. The two first sliders 4 are engaged together by the dovetail groove 46 and the locking block 47, and can move laterally together in the horizontal direction, which enhances the connection stability between the first sliders 4 and prevents relative displacement during bending.

[0048] In order to limit the range of motion of the first slider 4, in this embodiment, reference is made to... Figure 5 The first slider 4 has an elongated hole 48 extending through it along the thickness direction, and a limiting bolt 49 connected to the second clamping plate 33 is provided inside the elongated hole 48.

[0049] Understandably, this design allows the limiting bolt 49 to move within the elongated hole 48, thereby limiting the range of motion of the first slider 4, ensuring precise travel of the first slider 4, and improving the quality of bending.

[0050] During the mold closing process, the upper mold moves downward as a whole. The first ejector plate 14 first contacts the display back plate 9 and gradually presses down. The first inserter 42 on the second mold base 31 gradually approaches the first slider 4 as the upper mold presses down, pushing the first slider 4 outward toward the stop plate 21. The first spring 44 is compressed. At the same time, the second slider 5 of the second ejector plate 34 moves downward along the inclined guide groove 52 as the upper mold presses down. The second spring 54 is compressed. The stop plate 21 moves downward relative to the first ejector plate 14, thereby bending the edge of the display back plate 9 downward to form the third bent part 97. During this process, the first bent parts 95 and the second bent parts 96 of the first long side 91, the first short side 92 and the second short side 94 of the display back plate 9 move into the first relief groove 41 of the first slider 4, and the U-shaped edge 903 of the second long side 93 moves into the second relief groove 51 of the second slider 5. When the mold is opened, the upper mold moves upward as a whole. The first spring 44 pulls the first slider 4 inward through the pin, so that the first slider 4 separates from the display back plate 9. The second spring 54 pushes the second slider 5 upward along the inclined guide groove 52 through the ejector pin 53, so that the second slider 5 separates from the display back plate 9, which makes it easy for the display back plate 9 to be demolded smoothly from the lower mold and avoids damage to the display back plate 9. The three-fold bending mold of the display back plate 9 frame can perform a third bending operation on the edge of the display back plate 9 efficiently and accurately, improving production efficiency and product quality.

[0051] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A display backplane bezel triple bend mold characterized by, The system includes an upper mold and a lower mold. The upper mold includes a first mold base, a first template, and a first ejector plate. The first template is floatingly mounted below the first mold base, and the first ejector plate is fixed below the first template. A stop plate is provided on the outside of the first ejector plate from the first mold base. The lower mold includes a second mold base, a second ejector plate, and a second template. The second ejector plate is floatingly mounted above a pad, and the second template is fixed above the second ejector plate. Multiple first sliders cooperating with the stop plate are provided on the edge of the second ejector plate. The first sliders are movably connected to a lower support plate via multiple pull pins equipped with first springs. A first insert is provided on the second mold base towards the first sliders, and the first sliders are driven by the first insert via an inclined surface. When the mold is closed, the first insert drives the first sliders to move towards the stop plate. The stop plate moves downward relative to the first ejector plate, bending the edge of the display back panel downward to form a third bend. The first and second bends of the edge of the display back panel move into the first clearance groove of the first slider. When the mold is opened, the first spring pulls the first slider to separate from the edge of the display back panel.

2. The display backplane bezel triple bend mold of claim 1, wherein, A bending pressure block is fixed to the lower end face of the stop plate. The stop plate has a bending arc surface near the edge of the first release plate. The bending pressure block has a slope surface that transitions with the bending arc surface. When the mold is closed, the edge of the display back plate contacts the bending pressure block and the stop plate in sequence.

3. The display backplane bezel triple bend mold of claim 1, wherein, The upper mold further includes a first clamping plate, which is fixed above the first template and has a first gap with the first clamping plate and the first mold base; the lower mold further includes a pad and a second clamping plate, which is fixed above the second mold base and installed below the second ejector plate, with a second gap between the second clamping plate and the pad, and the first gap being smaller than the second gap.

4. The display backplane bezel triple bend mold of claim 3, wherein, The second stripper plate has multiple first sliders at positions corresponding to the first long side, the first short side, and the second short side of the display back panel. The first sliders cooperate with the stop plate to form a C-shaped frame of the first long side, the first short side, and the second short side of the display back panel.

5. The display backplane bezel triple bend mold of claim 3, wherein, The second stripper plate has multiple second sliders at a position corresponding to the second long side of the display back panel. The second sliders cooperate with the stop plate to form an L-shaped frame of the second long side of the display back panel.

6. The display backplane bezel triple bend mold of claim 5, wherein, The second slider passes through the oblique guide groove and the edge of the second ejector plate. The outer wall of the second slider is provided with a second clearance groove. An ejector pin is provided below the second slider. A second spring is provided below the ejector pin. The second spring acts on the ejector pin and the second mold base respectively. When the mold is closed, the U-shaped edge of the display back plate falls into the second clearance groove. When the mold is opened, the ejector pin pushes the second slider to move along the oblique guide groove under the action of the second spring.

7. The display backplane bezel triple bend mold of claim 6, wherein, The second template has a clearance space above the second slider.

8. The display backplane bezel triple bend mold of claim 6, wherein, The inclined guide groove is set at a 15° angle at the edge of the second stripper plate.

9. The display backplane bezel triple bend mold of claim 6, wherein, The second release plate has two first sliders on the edge corresponding to the first long side of the display back panel. The two first sliders are connected by a dovetail groove and a locking block. The dovetail groove is arranged along the thickness direction of the first slider.

10. The display backplane bezel triple bend mold of claim 3, wherein, The first slider is provided with an oblong hole in the thickness direction, and a limiting bolt connected with the second clamping plate is arranged in the oblong hole.

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