A burr-removing circuit board strip hole punch press die

Abstract

The application discloses a burr-removing strip-shaped hole stamping die for a circuit board, and belongs to the technical field of stamping die. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate, an upper stripper plate and an upper blanking plate. The upper die comprises an upper clamping plate

Description

Technical Field

[0001] This invention relates to the field of stamping dies, and in particular to a stamping die for deburring strip holes in circuit boards. Background Technology

[0002] Stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube, and profiles, causing them to undergo plastic deformation or separation, thereby obtaining workpieces (stamped parts) of the desired shape and size. Stamping and forging both belong to plastic processing (or pressure processing) and are collectively referred to as forging and pressing.

[0003] PCB (Printed Circuit Board) is an important electronic component, serving as the support for electronic components and the carrier for their electrical interconnection. Punching holes into the circuit board is a common processing method.

[0004] When punching strip-shaped holes on a circuit board, if the holes are too long, greater punching pressure is required, causing the circuit board to withstand greater pressure during the punching process and making it prone to damage. Existing technology generally uses a combination of long and short punches; the long punch partially punches the strip-shaped hole first, and the short punch further punches the remaining portion. This structure can effectively reduce the pressure during punching and prevent damage to the circuit board. However, the long and short punches in existing technology are independently designed. Even when they are fitted together during installation, some seams will still be present. These seams can leave burrs on the circuit board during punching, thus reducing the punching quality. Summary of the Invention

[0005] In view of the aforementioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a deburring die for strip holes in circuit boards, which aims to reduce the generation of burrs during the stamping process and improve the stamping quality.

[0006] To achieve the above objectives, the present invention provides a stamping die for deburring strip holes in circuit boards, the stamping die comprising: an upper die and a lower die;

[0007] The upper die includes an upper clamping plate, an upper stripper plate, and an upper punching plate. A punch mounting hole is provided on the upper clamping plate at a position opposite to the strip-shaped hole to be punched on the target circuit board. The punch mounting hole is used to install at least two strip-shaped sub-punches. Each strip-shaped sub-punch includes a short needle portion and a long needle portion. The short needle portion and the long needle portion of the strip-shaped sub-punch are an integral structure. The long needle portion is a conical structure with a flat top and a pointed bottom. A portion of the upper needle tail end of the long needle portion is located at the lower edge of the short needle portion, while the other portion of the upper needle tail end is exposed and fitted into the lower edge of the short needle portion of the adjacent strip-shaped sub-punch. The exposed portion of the upper needle tail end covers the vertical seam between two adjacent strip-shaped punches. All the strip-shaped punches together form a strip-shaped punch for punching the strip-shaped hole to be punched. The long needle portion and the short needle portion are used to punch the target circuit board from front to back to reduce the overall pressure borne by the target circuit board during the punching process.

[0008] The lower mold includes a lower template, a lower unloading plate, and a lower mold base; the lower template has a material discharge hole.

[0009] Optionally, the exposed portion of the upper needle tail end of the long needle part and the junction of the short needle part are provided to be longer than the vertical seam, so that the exposed portion of the upper needle tail end can completely cover the vertical seam and reduce the burrs generated by the gap of the vertical seam during the stamping process.

[0010] Optionally, the area where the short needle portion and the long needle portion of the adjacent strip-shaped sub-punch are fitted together is provided with an exposed portion shorter than the tail end of the upper needle, so that the exposed portion of the tail end of the upper needle can completely cover the horizontal seam between the two, reducing the gaps in the horizontal seam and the generation of burrs during the stamping process.

[0011] Optionally, a wedge-shaped dividing blade is provided in the blanking hole opposite to the vertical joint. The wedge-shaped dividing blade is used to cut waste material and to abut against the long needle part during the stamping process, so as to avoid burrs from forming in the gap of the vertical joint.

[0012] Optionally, the dimensions of the long needle portion of each of the strip-shaped sub-punches can be set differently according to requirements to form a stepped structure, thereby reducing the overall pressure borne by the target circuit board during the stamping process.

[0013] Optionally, the long needle portion is a conical structure, which is used to partially open the strip-shaped hole to be stamped during the stamping process to reduce the pressure of the common stamping.

[0014] Optionally, the inner contour of the upper cutting plate is a first rectangle that matches the target circuit board; the outer contour of the upper stripping plate is a second rectangle that matches the target circuit board; the upper stripping plate is disposed on the inner side of the upper cutting plate; and the upper stripping plate is provided with a punch guide hole for the strip-shaped punch to pass through.

[0015] Optionally, the lower template is adapted to the shape of the upper stripper plate, and the inner contour of the lower stripper plate is adapted to the inner contour of the upper punching plate; the lower template is disposed inside the lower stripper plate, the lower template is fixed on the lower die base, and the lower stripper plate is disposed above the lower die base.

[0016] Optionally, the lower stripper plate is provided with a first guide hole, and the lower die base is provided with a guide post corresponding to the first guide hole; the first guide hole and the guide post are sleeved together so that the lower stripper plate is positioned above the lower die base, and the upper punching plate is also provided with a second guide hole corresponding to the guide post.

[0017] The beneficial effects of this invention are as follows: 1. In this invention, a portion of the upper needle tail end of the long needle part is located at the lower edge of the short needle part, while the other portion of the upper needle tail end is exposed and fitted into the lower edge of the short needle part of the adjacent strip-shaped sub-punch. The exposed portion of the upper needle tail end covers the vertical seam between two adjacent strip-shaped sub-punches. This invention, through the structural design of the long needle part to cover the seam, ensures that the strip-shaped punch completely punches each corresponding area of ​​the strip-shaped hole to be punched during the punching process, effectively solving the problem of burrs left on the circuit board during the punching process in the prior art, thus improving the punching quality. 2. In this invention, the junction between the exposed portion of the upper needle tail end of the long needle part and the short needle part is longer than the vertical seam, so that the exposed portion of the upper needle tail end can completely cover the vertical seam, avoiding the generation of burrs in the gaps of the vertical seam during the punching process. This structural design further avoids the generation of burrs. 3. In this invention, the area where the short needle portion and the long needle portion of the adjacent strip-shaped punch interlock is provided with an exposed portion shorter than the tail end of the upper needle. This allows the exposed portion of the upper needle tail end to completely cover the horizontal seam between the two, preventing burrs from forming in the gaps of the horizontal seam during the stamping process. This structural design can also prevent the formation of longitudinal burrs. 4. A wedge-shaped dividing blade is provided in the blanking hole opposite the vertical seam. The wedge-shaped dividing blade is used to cut waste material and abuts against the long needle portion during the stamping process, preventing burrs from forming in the gaps of the vertical seam. The abutting structure of the wedge-shaped dividing blade and the long needle portion further ensures complete contact without gaps during the stamping process, further reducing burr formation.

[0018] In summary, this invention can reduce burr generation during the stamping process and improve stamping quality. Attached Figure Description

[0019] Figure 1This is an exploded structural diagram of a deburring die for stamping strip holes in a circuit board, provided in a specific embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of a strip-shaped sub-punch provided in a specific embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a strip-shaped punch provided in a specific embodiment of the present invention;

[0022] Figure 4 This is a front view structural diagram of a strip-shaped punch provided in a specific embodiment of the present invention;

[0023] Figure 5 This is a top view schematic diagram of the interlocking structure of two strip-shaped sub-punches provided in a specific embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the lower template structure provided in a specific embodiment of the present invention. Detailed Implementation

[0025] This invention discloses a stamping die for deburring strip holes in circuit boards. Those skilled in the art can refer to the content of this document and appropriately modify the technical details to achieve the desired result. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this invention. The methods and applications of this invention have been described through preferred embodiments. Those skilled in the art can clearly modify or appropriately change and combine the methods and applications described herein without departing from the content, spirit, and scope of this invention to realize and apply the technology of this invention.

[0026] The applicant's research found that while the integration of long and short punches can reduce the generation of burrs, if only one integrated long and short punch is used for excessively long strip holes, the length will make the installation process troublesome and may result in improper installation. Therefore, multiple long and short punches are still required for stamping, and some burrs will still be generated.

[0027] Therefore, embodiments of the present invention provide a stamping die for deburring strip holes in circuit boards, such as... Figure 1-6 As shown, the stamping die includes: an upper die and a lower die;

[0028] The upper die includes an upper clamping plate 1, an upper stripper plate 2, and an upper punching plate 3. A punch mounting hole is provided on the upper clamping plate 1 at a position opposite to the strip-shaped hole to be punched on the target circuit board. The punch mounting hole is used to install at least two strip-shaped sub-punches 101. Each strip-shaped punch 101 includes a short needle portion 104 and a long needle portion 103. The short needle portion 104 and the long needle portion 103 of the strip-shaped punch 101 are an integrated structure. The long needle portion 103 is a conical structure with a flat top and a pointed bottom. A portion of the upper needle tail of the long needle portion 103 is located at the same short needle portion. The lower edge of the needle 104 and the other part of the upper needle tail are exposed and fit into the lower edge of the short needle 104 of the adjacent strip punch 101. The exposed part of the upper needle tail covers the vertical joint 105 between the two adjacent strip punches 101. The strip punches 101 together form a strip punch 102 for punching the strip hole to be punched. The long needle 103 and the short needle 104 are used to punch the target circuit board from front to back to reduce the overall pressure on the target circuit board during the punching process.

[0029] The lower mold includes a lower template 4, a lower stripper plate 5, and a lower mold base 6; the lower template 4 has a material discharge hole 401.

[0030] It should be noted that in the prior art, burrs generated during the stamping of circuit boards are generally caused by the inability to stamp the area of ​​the circuit board corresponding to the gap of the vertical joint 105. The corresponding structure of the embodiment of the present invention uses the long needle portion 103 to block the vertical joint 105, thereby effectively avoiding the occurrence of this problem and improving the stamping quality.

[0031] In this specific embodiment, such as Figure 2 , 3 As shown in Figure 4, the long needle section 103 structure can effectively cover the vertical seam 105 and avoid burrs.

[0032] In this specific embodiment, the exposed portion of the upper needle tail end of the long needle portion 103 is provided at the junction with the short needle portion 104, which is longer than the vertical seam 105, so that the exposed portion of the upper needle tail end can completely cover the vertical seam 105 and reduce the burrs generated by the gaps in the vertical seam 105 during the stamping process.

[0033] It should be noted that such complete masking can further prevent the formation of burrs.

[0034] In this specific embodiment, the area where the short needle portion 104 and the long needle portion 103 of the adjacent strip-shaped punch 101 are fitted together is provided with an exposed portion shorter than the tail end of the upper needle, so that the exposed portion of the tail end of the upper needle can fully cover the horizontal seam 106 between the two to reduce the burrs generated by the gap in the horizontal seam 106 during the stamping process.

[0035] It should be noted that the above structure can cover the horizontal joint 106 to prevent burrs from being generated.

[0036] It is worth mentioning that the strip-shaped punch 101, viewed from above, can be seen as... Figure 5 As shown, the area of ​​the short needle portion 104 above the long needle portion 103 is shorter than the long needle portion 103. This simultaneously achieves two objectives: the exposed portion of the upper needle end of the long needle portion 103 at its junction with the short needle portion 104 is longer than the vertical seam 105, and the area where the short needle portion 104 fits into the long needle portion 103 of the adjacent strip-shaped punch 101 is shorter than the exposed portion of the upper needle end. This effectively avoids burr formation and improves stamping quality.

[0037] In this specific embodiment, a wedge-shaped dividing blade 402 is provided in the blanking hole 401 opposite to the vertical joint 105. The wedge-shaped dividing blade 402 is used to cut waste material and to abut against the long needle part 103 during the stamping process, so as to avoid burrs from being generated in the gap of the vertical joint 105.

[0038] It should be noted that the above structure allows the circuit board area corresponding to the gap of the vertical joint 105 to be contacted by the wedge-shaped dividing blade 402 and the long needle part 103, further avoiding the problem that the circuit board area corresponding to the gap of the vertical joint 105 cannot be stamped.

[0039] In this specific embodiment, the dimensions of the long needle portion 103 of each strip-shaped sub-punch 101 are set differently according to requirements to form a ladder, thereby reducing the overall pressure borne by the target circuit board during the stamping process.

[0040] It should be noted that if the strip hole to be stamped is too long, it can be divided into multiple stages for multi-stage stamping, which can further reduce the overall pressure on the target circuit board during the stamping process.

[0041] In this specific embodiment, the long needle portion 103 has a conical structure. This conical long needle portion 103 is used to partially open the strip-shaped hole to be stamped during the stamping process, thereby reducing the pressure from the combined stamping. This structure differs from... Figure 2 , Figure 3 , Figure 4 As shown, the conical structure can make the stamping opening more stable.

[0042] In this specific embodiment, the inner contour of the upper cutting plate 3 is a first rectangle that matches the target circuit board; the outer contour of the upper stripping plate 2 is a second rectangle that matches the target circuit board. The upper stripping plate 2 is disposed on the inner side of the upper cutting plate 3, and the upper stripping plate 2 is provided with a punch guide hole 202 for the passage of the strip punch 102.

[0043] In this specific embodiment, the lower template 4 is adapted to the shape of the upper stripper plate 2, and the inner contour of the lower stripper plate 5 is adapted to the inner contour of the upper punching plate 3; the lower template 4 is disposed inside the lower stripper plate 5, the lower template 4 is fixed on the lower die base 6, and the lower stripper plate 5 is disposed above the lower die base 6.

[0044] In this specific embodiment, the lower unloading plate 5 is provided with a first guide hole 501, and the lower die base 6 is provided with a guide post 601 corresponding to the first guide hole 501; the first guide hole 501 and the guide post 601 are sleeved together so that the lower unloading plate 5 is positioned above the lower die base 6, and the upper punching plate 3 is also provided with a second guide hole 301 corresponding to the guide post 601.

[0045] In this embodiment of the invention, a portion of the upper needle tail of the long needle portion 103 is disposed at the lower edge of the short needle portion 104, while the other portion of the upper needle tail is exposed and fitted into the lower edge of the short needle portion 104 of the adjacent strip-shaped sub-punch 101. The exposed portion of the upper needle tail covers the vertical seam 105 between the two adjacent strip-shaped sub-punches 101. This embodiment of the invention, through the structural design of the long needle portion 103 to cover the seam, ensures that the strip-shaped punch 102 completely punches each corresponding area of ​​the strip-shaped hole to be punched during the punching process. This effectively solves the problem of burrs left on the circuit board during the punching process in the prior art due to seam gaps, thus improving the punching quality.

[0046] In this embodiment of the invention, the exposed portion of the upper needle tail of the long needle portion 103 and the junction of the short needle portion 104 are provided to be longer than the vertical seam 105, so that the exposed portion of the upper needle tail can completely cover the vertical seam 105, avoiding the generation of burrs in the gaps of the vertical seam 105 during the stamping process. This structural design further avoids the generation of burrs.

[0047] In this embodiment of the invention, the area where the short needle portion 104 and the long needle portion 103 of the adjacent strip-shaped sub-punch 101 interlock is provided with an exposed portion shorter than the tail end of the upper needle, so that the exposed portion of the tail end of the upper needle can completely cover the horizontal seam 106 between the two, avoiding the generation of burrs in the gap of the horizontal seam 106 during the stamping process. This structural design can avoid the generation of longitudinal burrs.

[0048] In this specific embodiment, such as Figure 6 As shown, a wedge-shaped dividing blade 402 is provided in the blanking hole 401 opposite to the vertical joint 105. The wedge-shaped dividing blade 402 is used to cut the waste material and abuts against the long needle part 103 during the stamping process, avoiding the formation of burrs in the gap of the vertical joint 105. The abutting structure of the wedge-shaped dividing blade 402 and the long needle part 103 further ensures full contact without gaps during the stamping process, further reducing the generation of burrs.

[0049] In summary, the embodiments of the present invention can reduce burr generation during the stamping process and improve stamping quality.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0051] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A stamping die for deburring strip holes in a circuit board, characterized in that, The stamping die comprises an upper die and a lower die; The upper die comprises an upper clamp plate, an upper stripper plate and an upper blanking plate; a punch pin mounting hole is formed on the upper clamp plate at a position opposite to a to-be-stamped strip hole of a target circuit board, and the punch pin mounting hole is used for mounting at least two strip-shaped sub-punch pins; the strip-shaped sub-punch pin comprises a short pin part and a long pin part, the short pin part and the long pin part of the strip-shaped sub-punch pin are in an integrated structure, the long pin part is in a conical structure with an upper flat end and a lower pointed end, a part of an upper tail end of the long pin part is arranged at a lower edge of the short pin part, another part of the upper tail end is exposed and embedded with a lower edge of the short pin part of an adjacent strip-shaped sub-punch pin, and the exposed part of the upper tail end shields a vertical seam between two adjacent strip-shaped sub-punch pins; the strip-shaped sub-punch pins collectively form a strip-shaped punch pin for stamping the to-be-stamped strip hole, and the long pin part and the short pin part are used for stamping the target circuit board in front and back directions to reduce the overall pressure borne by the target circuit board during stamping. The lower die comprises a lower die plate, a lower stripper plate and a lower die seat; a blanking hole is formed on the lower die plate.

2. The burring line board strip hole punch press mold according to claim 1, characterized by, The exposed part of the upper tail end of the long pin part is longer than the width of the vertical seam, so that the exposed part of the upper tail end can shield the vertical seam comprehensively to reduce burrs generated by gaps in the vertical seam during stamping.

3. The burring line board strip hole punch press mold according to claim 1, characterized by, The size of the long pin part of each strip-shaped sub-punch pin is set differently to form steps, so as to sequentially reduce the overall pressure borne by the target circuit board during stamping.

4. The burring line board strip hole punch press mold according to claim 1, characterized by, The long pin part is in a conical structure, and the long pin part of the conical structure is used for partially opening the to-be-stamped strip hole during stamping to reduce the pressure of collective stamping.

5. The burring line board strip hole punch press mold according to claim 1, characterized by, The inner contour of the upper blanking plate is a first rectangle matched with the target circuit board; the outer contour of the upper stripper plate is a second rectangle matched with the target circuit board, the upper stripper plate is arranged on the inner side of the upper blanking plate, and a punch guide hole for passing through the strip-shaped punch pin is formed on the upper stripper plate.

6. The burring line board strip hole punch press mold according to claim 1, wherein, The lower die plate is matched with the outer shape of the upper stripper plate, and the inner contour of the lower stripper plate is matched with the inner contour of the upper blanking plate; the lower die plate is arranged in the lower stripper plate, and the lower die plate is fixed on the lower die seat, and the lower stripper plate is arranged above the lower die seat.

7. The burring line board strip hole punch press mold according to claim 1, characterized by, The lower stripper plate is provided with a first guide hole, and the lower die seat is provided with a guide column corresponding to the first guide hole; the first guide hole and the guide column are sleeved to arrange the lower stripper plate above the lower die seat, and the upper blanking plate is further provided with a second guide hole corresponding to the guide column.

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