Back plate stamping die capable of preventing scrap edges from jumping out

Abstract

The utility model relates to a back plate stamping die for preventing scrap edges from jumping out, which comprises an upper die and a lower die, the upper die comprises an upper die seat, an upper die plate and an upper stripping plate, the upper die plate is fixedly connected with the upper die seat and surrounds the outer side of the upper stripping plate, the lower die comprises a lower die seat and a lower die plate, the lower die plate is fixed on the upper side of the lower die seat through a lower backing plate, and the lower backing plate is fixed on the lower die seat. The lower base plate is provided with a plurality of waste cutters and side cutters, first cutter edges of the waste cutters are arranged towards the upper die plate, second cutter edges of the side cutters are arranged towards the lower die plate, and during die assembly, the upper die plate moving downwards relative to the upper stripping plate conducts edge cutting operation on the display back plate and pushes waste frame pieces generated by edge cutting to move towards the waste cutters. The outer edge of the waste frame part is cut to form a stress notch under the action of the side cutter, and is cut into a plurality of waste strips falling into the blanking holes of the lower base plate under the action of the waste cutter. According to the utility model, a plurality of stress notches are cut on the waste frame piece through a plurality of side cutters, so that waste strips are prevented from bouncing back and up.

Description

Technical Field

[0001] This utility model relates to the field of display backplate manufacturing technology, and in particular to a backplate stamping mold that prevents waste material from jumping out of the cut edge. Background Technology

[0002] In the manufacturing process of monitor back panels, metal sheets need to undergo a series of processes, including edge trimming, embossing, punching, bending, and shaping. During the edge trimming process, the stamping die precisely cuts the edges of the metal sheet. The resulting scrap is further cut into several scrap strips. After being cut, the scrap is prone to springing back, especially during high-speed stamping. The stamping force of the die is large and the stamping speed is fast. The cut scrap strips can easily jump out from around the cutter, which can injure operators and damage the die and the product. At the same time, the jump-out scrap strips are inconvenient to collect and require a lot of time to clean up, affecting production efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a backplate stamping die that prevents waste material from jumping out of the cut edge.

[0004] This utility model provides a back panel stamping die to prevent scrap material from jumping out, including an upper die and a lower die. The upper die includes an upper die base, an upper template, and an upper ejector plate. The upper ejector plate is movably disposed on the lower side of the upper die base. The upper template is fixedly connected to the upper die base and surrounds the outer side of the upper ejector plate. The lower die includes a lower die base and a lower template. The lower template is fixed to the upper side of the lower die base by a lower pad. The lower pad is provided with multiple scrap cutters and side cutters on the outer side of the lower template. The first cutting edge of the scrap cutter faces the upper template, and the second cutting edge of the side cutter faces the lower template. When the die is closed, the lower template and the upper ejector plate press against the display back panel. The upper template, which moves downward relative to the upper ejector plate, performs a scrap edge cutting operation on the display back panel and pushes the scrap frame generated by the scrap edge cutting towards the scrap cutter. The outer edge of the scrap frame is cut with stress notches under the action of the side cutter and is cut into multiple scrap strips that fall into the scrap holes of the lower pad under the action of the scrap cutter.

[0005] In some embodiments, the waste cutter includes a pad, a fixing block, and a blade. The pad is connected to a lower pad plate, and the blade is clamped between the fixing block and the pad. The first cutting edge is located on the upper side of the blade and is placed horizontally on the outside of the lower template.

[0006] In some embodiments, the pad is provided with a support block, the fixing block is provided with a bayonet, the blade is vertically disposed on the support block and extends into the bayonet, the fixing block is provided with a limit groove at the bayonet, the lower end of the blade is provided with a limit block, and the limit block is disposed in the limit groove.

[0007] In some embodiments, the blanking hole is provided along the edge of the lower template and passes through the lower pad and the lower mold base.

[0008] In some embodiments, the discharge holes are divided into straight discharge holes and L-shaped discharge holes. The straight discharge holes are used for discharging straight waste strips, and the L-shaped discharge holes are used for discharging L-shaped waste strips. A waste cutter is provided between two adjacent discharge holes.

[0009] In some embodiments, two side cutters are provided between two adjacent waste cutters.

[0010] In some embodiments, the side cutter includes a fixing part and a cutting part. The fixing part is fixed to the lower mold base by bolts. The cutting part is vertically arranged on the upper side of the fixing part. The cutting part has a second cutting edge inclined on the side facing the lower mold plate. The cutting part has an inclined surface for guiding waste frame members on the upper side of the second cutting edge.

[0011] In some embodiments, the fixing part is located on the side of the discharge hole away from the lower template, the cutting part extends to the discharge hole, and the second cutting edge is located directly above the discharge hole.

[0012] In some embodiments, the upper template is provided with a clearance hole at a position corresponding to the side cutter, and when the mold is closed, the cutting part of the side cutter extends into the clearance hole.

[0013] In some embodiments, the lower pad is provided with a stop on the side of the discharge hole away from the lower template, and the waste strip falls into the discharge hole from the channel between the stop and the lower template.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the upper template, together with the upper stripper plate and the lower template, completes the edge cutting operation of the display back panel. The waste frame formed by the edge cutting is cut with multiple stress notches by multiple side cutting blades. When the waste cutting blade cuts the waste frame, the stress on the waste strip is released at the stress notch, preventing the waste strip from rebounding. Both the side cutting blade and the waste cutting blade use the punching force of the upper template when the mold is closed, which reduces unnecessary energy loss and improves cutting efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the opening and closing structure of the back plate stamping die for preventing waste material from jumping out, according to an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the upper template planar structure according to an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the planar structure of the lower pad, lower template, waste cutter, and side cutter according to an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the planar structure of the lower mold base according to an embodiment of this application.

[0019] Figure 5 This is a side view of the waste cutter according to an embodiment of this application.

[0020] Figure 6 This is a side view of the side cutter according to an embodiment of this application.

[0021] Figure label:

[0022] 11. Upper mold base; 12. Upper clamping plate; 13. Stop plate; 14. Upper ejector plate; 15. Upper template; 16. Clearance hole;

[0023] 21. Lower mold base; 22. Lower backing plate; 23. Lower template;

[0024] 3. Scrap cutter; 31. First cutting edge; 32. Pad block; 33. Fixing block; 34. Blade; 35. Support block; 36. Bayonet; 37. Limiting groove; 38. Limiting block;

[0025] 4. Side cutter; 41. Second cutting edge; 42. Fixing part; 43. Cutting part; 44. Bevel;

[0026] 5. Blanking hole; 51. Straight blanking hole; 52. L-shaped blanking hole;

[0027] 6. Stop;

[0028] 71. Return spring; 72. Pin;

[0029] 8. Display back panel; 81. Scrap frame components. Detailed Implementation

[0030] The specific embodiments of this utility model are described with reference to the accompanying drawings.

[0031] refer to Figure 1 The figure shows a schematic diagram of the opening and closing structure of the back panel stamping die to prevent the scrap edge from jumping out. The upper die includes an upper die base 11, an upper template 15 and an upper stripper plate 14 arranged from top to bottom. The lower die includes a lower die base 21, a lower pad plate 22 and a lower template 23 arranged from bottom to top. This layered structural design makes the function of each component clear, which is convenient for processing, assembly and maintenance. The upper template 15, together with the upper stripper plate 14 and the lower template 23, completes the edge trimming operation of the display back panel 8.

[0032] refer to Figures 1 to 6A backplate stamping die for preventing scrap material from jumping out includes an upper die and a lower die. The upper die includes an upper die base 11, an upper template 15, and an upper ejector plate 14. The upper ejector plate 14 is movably disposed on the lower side of the upper die base 11. The upper template 15 is fixedly connected to the upper die base 11 and surrounds the outer side of the upper ejector plate 14. The lower die includes a lower die base 21 and a lower template 23. The lower template 23 is fixed to the upper side of the lower die base 21 by a lower backing plate 22. The lower backing plate 22 is provided with multiple scrap cutters 3 and side cutters 4 on the outer side of the lower template 23. The first cutting edge of the scrap cutter 3... The side cutter 4 has its second blade 41 facing the lower template 23. When the mold is closed, the lower template 23 and the upper ejector plate 14 press together the display back panel 8. The upper template 15, which moves downward relative to the upper ejector plate 14, performs edge trimming on the display back panel 8 and pushes the scrap frame 81 generated by the edge trimming towards the scrap cutter 3. The outer edge of the scrap frame 81 is cut with stress notches under the action of the side cutter 4 and is cut into multiple scrap strips that fall into the drop hole 5 of the lower pad plate 22 under the action of the scrap cutter 3.

[0033] This application describes a back panel stamping die to prevent scrap material from jumping out during cutting. The upper template 15, together with the upper stripper plate 14 and the lower template 23, completes the cutting operation of the display back panel 8. The scrap frame 81 formed by cutting is cut with multiple stress notches by multiple side cutters 4. When the scrap cutter 3 cuts the scrap frame 81, the stress on the scrap strip is released at the stress notch, preventing the scrap strip from springing back and jumping out. Both the side cutter 4 and the scrap cutter 3 utilize the punching force of the upper template 15 when the die is closed, reducing unnecessary energy loss and improving cutting efficiency.

[0034] It should be further explained that a stop plate 13 and an upper clamping plate 12 are provided between the upper ejector plate 14 and the upper mold base 11. The upper ejector plate 14 is fixed to the stop plate 13, and the upper clamping plate 12 is fixed to the upper mold base 11. The upper mold base 11 and the upper ejector plate 14 are movably connected by a return spring 71 and a pin 72, so that the upper ejector plate 14 and the stop plate 13 can move up and down relative to the upper mold base 11.

[0035] To ensure that the waste cutter 3 can stably cut the waste frame 81, in this embodiment, reference is made to... Figure 3 and Figure 5 The waste cutter 3 includes a pad block 32, a fixing block 33 and a blade 34. The pad block 32 is connected to the lower pad plate 22. The blade 34 is clamped between the fixing block 33 and the pad block 32. The first cutting edge 31 is set on the upper side of the blade 34 and is placed horizontally on the outside of the lower template 23.

[0036] Understandably, with this setup, the blade 34 of the waste cutter 3 is clamped between the fixing block 33 and the pad block 32. The fixing block 33 and the pad block 32 are fixed by bolts, thus firmly fixing the blade 34 on the lower pad plate 22 and ensuring the stability of the blade 34 during the stamping process.

[0037] To further improve the stability of the blade 34 during the stamping process, in this embodiment, reference is made to... Figure 3 and Figure 5 The pad 32 is provided with a support block 35, the fixing block 33 is provided with a bayonet 36, the blade 34 is vertically arranged on the support block 35 and extends into the bayonet 36, the fixing block 33 is provided with a limit groove 37 at the bayonet 36, and the lower end of the blade 34 is provided with a limit block 38, which is located in the limit groove 37.

[0038] Understandably, with this configuration, the pad 32 is equipped with a support block 35 of the same thickness as the blade 34, the fixing block 33 is equipped with a bayonet 36 that matches the thickness of the blade 34, the blade 34 is vertically mounted on the support block 35 and extends into the bayonet 36, and the limiting block 38 at the lower end of the blade 34 is restricted by the limiting groove 37. Through the double positioning structure, the accuracy and stability of the blade 34 installation are further improved, and the blade 34 is prevented from shifting during the stamping process.

[0039] In order to allow the waste strip to be discharged from the mold quickly, in this embodiment, reference is made to Figure 3 and Figure 4 The blanking hole 5 is set along the edge of the lower template 23, and the blanking hole 5 passes through the lower pad 22 and the lower mold base 21.

[0040] Understandably, with this setup, the upper template 15, the upper stripper plate 14, and the lower template 23 together cut out a rectangular scrap frame 81. The scrap frame 81 is slightly larger than the lower template 23. The dropping hole 5, which is set along the edge of the template, is on the path of the scrap frame 81 falling vertically. After being cut into scrap strips, it can fall directly into the dropping hole 5.

[0041] To accommodate the waste strip, in this embodiment, reference is made to Figure 3 and Figure 4 The discharge hole 5 is divided into a straight discharge hole 51 and an L-shaped discharge hole 52. The straight discharge hole 51 is used for discharging straight waste strips, and the L-shaped discharge hole 52 is used for discharging L-shaped waste strips. A waste cutter 3 is set between two adjacent discharge holes 5.

[0042] Understandably, with this setup, multiple scrap cutters 3 will cut the scrap frame 81 into multiple straight scrap strips and four L-shaped scrap strips. The straight scrap strips and the four L-shaped scrap strips fall into the straight discharge hole 51 and the L-shaped discharge hole 52 respectively, and are discharged downwards into the lower pad space below the lower mold base 21, so that the scrap strips can be discharged from the mold more effectively.

[0043] In order to better release the stress on the scrap strip, in this embodiment, reference is made to... Figure 3 Two side cutters 4 are set between two adjacent waste cutters 3.

[0044] Understandably, with this setup, each scrap strip can be cut with two stress notches by the two side cutters 4. The stress applied to the scrap strip by the two scrap cutters 3 at both ends of the scrap strip is released through the two stress notches, which can effectively prevent the scrap strip from bouncing back.

[0045] To ensure that the side cutter 4 can stably cut the waste frame 81, in this embodiment, refer to Figure 3 and Figure 6 The side cutter 4 includes a fixing part 42 and a cutting part 43. The fixing part 42 is fixed to the lower mold base 21 by bolts. The cutting part 43 is vertically arranged on the upper side of the fixing part 42. The cutting part 43 is inclined to the side of the lower mold plate 23 with a second cutting edge 41. The cutting part 43 is provided with an inclined surface 44 for guiding the waste frame 81 on the upper side of the second cutting edge 41.

[0046] Understandably, with this configuration, the fixing part 42 is fixed to the lower die base 21 by bolts, so that the side cutter 4 is directly fixed to the lower die base 21 and limited by the lower pad 22, so that the side cutter 4 can stably cut the scrap frame 81 during the stamping process. The inclined surface 44 guides the scrap frame 81 to gradually contact the inclined second cutting edge 41, gradually guiding and cutting out stress notches. This progressive cutting method can improve the cutting smoothness and quality.

[0047] To ensure that the second cutting edge 41 cuts the outer edge of the waste frame 81, in this embodiment, reference is made to... Figure 3 The fixing part 42 is located on the side of the material drop hole 5 away from the lower template 23, the cutting part 43 extends to the material drop hole 5, and the second cutting edge 41 is located directly above the material drop hole 5.

[0048] Understandably, with this configuration, the side cutter 4 is positioned on the side of the discharge hole 5 away from the lower template 23, allowing the side cutter 4 to contact the outer edge of the scrap frame 81. This also prevents the cut scrap strip from jumping out of the mold laterally. The cutting part 43 extends to the discharge hole 5, and the second cutting edge 41 is located directly above the discharge hole 5. The scrap strip cut by the side cutter 4 can fall directly into the discharge hole 5, ensuring smooth scrap discharge.

[0049] In order to ensure successful mold closing, in this embodiment, reference is made to... Figure 1 and Figure 2 The upper template 15 has a clearance hole 16 at a position corresponding to the side cutter 4. When the mold is closed, the cutting part 43 of the side cutter 4 extends into the clearance hole 16.

[0050] Understandably, with this configuration, the upper template 15 has a clearance hole 16 at a position corresponding to the side cutter 4. When the mold is closed, the cutting part 43 of the side cutter 4 extends into the clearance hole 16, which can prevent the upper template 15 and the side cutter 4 from interfering with each other during the mold closing process, ensuring that the mold closing process can proceed smoothly. At the same time, it also ensures that the side cutter 4 can cut the waste frame 81 normally.

[0051] To prevent the waste strip from deviating from the discharge hole 5, in this embodiment, reference is made to... Figure 3 The lower pad 22 is provided with a stop 6 on the side of the discharge hole 5 away from the lower template 23. The waste strip falls into the discharge hole 5 through the channel between the stop 6 and the lower template 23.

[0052] Understandably, with this configuration, the stop block 6 is located on the side of the discharge hole 5 away from the lower template 23. The stop block 6 can guide the falling direction of the waste strip, prevent the waste strip from deviating from the discharge hole 5 during the falling process, and ensure that the waste strip falls accurately into the discharge hole 5.

[0053] In this embodiment, the stress notch cut by the side cutter 4 releases the stress on the scrap strip, preventing the scrap strip from springing back and jumping out, ensuring production safety, and allowing the scrap strip to fall stably into the drop hole 5 without interfering with subsequent stamping processes, reducing the number of production interruptions and improving production efficiency.

[0054] 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 backplate stamping die for preventing scrap material from jumping out, characterized in that, The device includes an upper mold and a lower mold. The upper mold includes an upper mold base, an upper template, and an upper ejector plate. The upper ejector plate is movably disposed on the lower side of the upper mold base. The upper template is fixedly connected to the upper mold base and surrounds the outer side of the upper ejector plate. The lower mold includes a lower mold base and a lower template. The lower template is fixed to the upper side of the lower mold base by a lower pad. The lower pad is provided with multiple scrap cutters and side cutters on the outer side of the lower template. The first cutting edge of the scrap cutter faces the upper template, and the second cutting edge of the side cutter faces the lower template. When the mold is closed, the lower template and the upper ejector plate press against the display back panel. The upper template, which moves downward relative to the upper ejector plate, performs edge trimming on the display back panel and pushes the scrap frame generated by the edge trimming towards the scrap cutter. The outer edge of the scrap frame is cut with stress notches under the action of the side cutter and is cut into multiple scrap strips that fall into the material drop holes of the lower pad under the action of the scrap cutter.

2. The back plate stamping die for preventing scrap material from jumping out as described in claim 1, characterized in that, The waste cutter includes a pad block, a fixing block, and a blade. The pad block is connected to the lower pad plate, and the blade is clamped between the fixing block and the pad block. The first cutting edge is located on the upper side of the blade and is placed horizontally on the outside of the lower template.

3. The back plate stamping die for preventing scrap material from jumping out as described in claim 2, characterized in that, The pad is provided with a support block, the fixing block is provided with a bayonet, the blade is vertically mounted on the support block and extends into the bayonet, the fixing block is provided with a limit groove at the bayonet, the lower end of the blade is provided with a limit block, and the limit block is located in the limit groove.

4. The back plate stamping die for preventing scrap material from jumping out as described in claim 1, characterized in that, The blanking hole is provided along the edge of the lower template and passes through the lower pad and the lower mold base.

5. The backplate stamping die for preventing scrap material from jumping out according to claim 4, characterized in that, The discharge holes are divided into straight discharge holes and L-shaped discharge holes. The straight discharge holes are used for discharging straight waste strips, and the L-shaped discharge holes are used for discharging L-shaped waste strips. A waste cutter is set between two adjacent discharge holes.

6. The back plate stamping die for preventing scrap material from jumping out as described in claim 1, characterized in that, Two side cutters are installed between two adjacent waste cutters.

7. The backplate stamping die for preventing scrap material from jumping out according to claim 1, characterized in that, The side cutter includes a fixing part and a cutting part. The fixing part is fixed to the lower mold base by bolts. The cutting part is vertically arranged on the upper side of the fixing part. The cutting part is inclined to the side of the lower mold plate with a second cutting edge. The cutting part is provided with an inclined surface for guiding waste material frame on the upper side of the second cutting edge.

8. The back plate stamping die for preventing scrap material from jumping out according to claim 7, characterized in that, The fixing part is located on the side of the material drop hole away from the lower template, the cutting part extends to the material drop hole, and the second cutting edge is located directly above the material drop hole.

9. The backplate stamping die for preventing scrap material from jumping out according to claim 7, characterized in that, The upper template has a clearance hole at a position corresponding to the side cutter. When the mold is closed, the cutting part of the side cutter extends into the clearance hole.

10. The backplate stamping die for preventing scrap material from jumping out according to claim 1, characterized in that, The lower pad is provided with a stop block on the side of the discharge hole away from the lower template, and the waste strip falls into the discharge hole through the channel between the stop block and the lower template.

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