A circuit board strip-shaped hole stamping die

Abstract

The application discloses a circuit board strip-shaped hole stamping die, which comprises an upper die and a lower die, the upper die comprises an upper blanking plate, an upper stripper plate and an upper clamp plate, a group of punch pin mounting holes is formed on the upper clamp plate at a position opposite to a to-be-stamped strip-shaped hole of a target circuit board, the group of punch pin mounting holes is divided into a plurality of punch pin mounting holes by a first reinforcing wall, and the first reinforcing wall is used for enhancing the stamping resistance of the upper clamp plate; each punch pin mounting hole is used for mounting a corresponding strip-shaped sub-punch pin, each strip-shaped sub-punch pin comprises an upper mounting part and a lower stamping part; each strip-shaped sub-punch pin is arranged in the corresponding punch pin mounting hole through the upper mounting part, and the lower stamping parts of the strip-shaped sub-punch pins are connected in series to form a strip-shaped punch pin matched with the to-be-stamped strip-shaped hole; the lower die comprises a lower die plate, a lower stripper plate and a lower die seat; and a blanking hole is formed on the lower die plate. The stamping resistance of the stamping die during stamping of the strip-shaped hole can be improved, and the stamping die can be prevented from being damaged during stamping.

Description

Technical Field

[0001] This invention relates to the field of stamping dies, and in particular to a stamping die for a strip hole in a circuit board. 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] In existing technology for punching slotted holes on circuit boards, if the slotted holes are too long, the stamping resistance of the entire stamping die will be greatly reduced. Stamping under such conditions may damage the stamping die. Summary of the Invention

[0005] The applicant's research revealed that stamping strip holes requires the use of corresponding strip punches, and installing strip punches requires opening strip mounting holes on the upper clamping plate that correspond to the length of the strip punches. As a result, the longer the strip hole, the longer the strip mounting hole on the upper clamping plate needs to be to accommodate it. Consequently, the holes in the upper clamping plate become too large, which greatly reduces the stamping resistance of the upper clamping plate and makes it easy to be damaged during the stamping process.

[0006] In view of the aforementioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a stamping die for strip holes in circuit boards, which aims to improve the stamping resistance of the stamping die when stamping strip holes.

[0007] To achieve the above objectives, the present invention provides a circuit board strip hole stamping die, characterized in that it comprises: an upper die and a lower die;

[0008] The upper die includes an upper punching plate, an upper stripping plate, and an upper clamping plate;

[0009] The upper clamping plate has a set of punch mounting holes at a position opposite to the strip-shaped hole to be punched on the target circuit board. The set of punch mounting holes is divided into multiple punch mounting holes by a first reinforcing wall, which enhances the punching resistance of the upper clamping plate. Each punch mounting hole is used to install a corresponding strip-shaped sub-punch. Each strip-shaped sub-punch includes an upper mounting part and a lower punching part. Each strip-shaped sub-punch is installed in the corresponding punch mounting hole through the upper mounting part. The lower punching parts of each strip-shaped sub-punch are connected in series to form a strip-shaped punch adapted to the strip-shaped hole to be punched.

[0010] The lower mold includes a lower template, a lower unloading plate, and a lower mold base; the lower template has a material discharge hole.

[0011] Optionally, the blanking hole is divided into an upper pressure bearing hole and a lower cutting hole. The upper pressure bearing hole corresponds to the strip-shaped punching needle, and the lower cutting hole is divided into multiple sub-holes by a second reinforcing wall. The second reinforcing wall is used to enhance the punching resistance of the lower template.

[0012] Optionally, the second reinforcing wall is a wedge-shaped structure that gradually thins from bottom to top, and the second reinforcing wall is used to cut the waste material.

[0013] Optionally, the total length of the lower stamping portion of each of the strip-shaped sub-punches is matched with the difference between the total length of each of the mounting holes and the total length of each of the first reinforcing walls, so that the lower stamping portions of adjacent strip-shaped sub-punches abut in series.

[0014] Optionally, the strip-shaped sub-punch is divided into a stepped strip-shaped sub-punch and a rectangular strip-shaped sub-punch. The length difference between the lower stamping part and the upper mounting part of the stepped strip-shaped sub-punch matches the length of the first reinforcing wall. The lower stamping part and the upper mounting part of the rectangular strip-shaped sub-punch have the same length. The stepped strip-shaped sub-punch is inserted from the upper part of the punch mounting hole and moves to one side so that the lower stamping part fits into the first reinforcing wall. The rectangular strip-shaped sub-punch is inserted from the upper part of the punch mounting hole after the stepped strip-shaped sub-punch is installed.

[0015] Optionally, the strip-shaped sub-punch is inserted from the lower part of the punch mounting hole so that the lower punching part is fitted with the first reinforcing wall.

[0016] 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 passage of the strip-shaped punching needle.

[0017] 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.

[0018] The beneficial effects of the present invention are as follows: 1. A punch mounting hole group is provided on the upper clamping plate of the present invention at the position opposite to the strip hole to be punched on the target circuit board. The punch mounting hole group is divided into multiple punch mounting holes by a first reinforcing wall. The first reinforcing wall is used to enhance the punching resistance of the upper clamping plate. Each punch mounting hole is used to install a corresponding strip sub-punch. Each strip sub-punch includes an upper mounting part and a lower punching part. Each strip sub-punch is installed in the corresponding punch mounting hole through the upper mounting part. The lower punching parts of each strip sub-punch are connected in series to form a strip punch that is adapted to the strip hole to be punched. This invention uses a punch mounting hole group instead of the single mounting hole structure in the prior art. The mounting hole group is divided into multiple punch mounting holes by a first reinforcing wall, which enhances the stamping resistance of the upper clamping plate. Furthermore, by installing strip-shaped sub-punches in the punch mounting holes, the lower stamping parts of the strip-shaped sub-punches are connected in series to form strip-shaped punches that match the strip-shaped holes to be stamped, solving the joint problem at the reinforcing wall and ensuring that there is a corresponding strip-shaped punch to stamp the strip-shaped holes. The strip-shaped punches formed by the strip-shaped sub-punches of this invention guarantee the stamping of the required strip-shaped holes, while the reinforcing wall effectively strengthens the stamping resistance of the upper clamping plate, preventing damage to the stamping die during the stamping process. 2. The blanking hole of this invention is divided into an upper pressure-bearing hole and a lower cutting hole. The upper pressure-bearing hole corresponds to the strip-shaped stamping pin, and the lower cutting hole is divided into multiple sub-holes by a second reinforcing wall, which enhances the stamping resistance of the lower die. This invention further enhances the stamping resistance of the lower die by using a second reinforcing wall, thereby improving the overall stamping resistance of the stamping die and preventing damage to the stamping die during the stamping process. 3. The second reinforcing wall of this invention is a wedge-shaped structure that gradually thins from bottom to top. This second reinforcing wall is used to cut waste material. By cutting the waste material, this invention reduces its size, making it easier to discharge and effectively preventing blockage of the discharge hole and damage to the die.

[0019] In summary, the present invention can improve the stamping resistance of stamping dies when stamping strip holes and avoid damage to stamping dies during the stamping process. Attached Figure Description

[0020] Figure 1 This is an exploded structural diagram of a circuit board strip hole stamping die provided in a specific embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the upper clamping plate and strip-shaped sub-punch provided in a specific embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a strip-shaped sub-punch provided in a specific embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the lower template provided in a specific embodiment of the present invention;

[0024] Figure 5 This is a frontal planar structural diagram of a stepped strip-shaped sub-punch and a rectangular strip-shaped sub-punch provided in a specific embodiment of the present invention. Detailed Implementation

[0025] This invention discloses a stamping die for 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 revealed that stamping strip holes requires the use of corresponding strip punches, and installing strip punches requires opening strip mounting holes on the upper clamping plate that correspond to the length of the strip punches. As a result, the longer the strip hole, the longer the strip mounting hole on the upper clamping plate needs to be to accommodate it. Consequently, the holes in the upper clamping plate become too large, which greatly reduces the stamping resistance of the upper clamping plate and makes it easy to be damaged during the stamping process.

[0027] Therefore, embodiments of the present invention provide a stamping die for circuit board strip holes, such as... Figure 1-4 As shown, it includes: an upper mold and a lower mold;

[0028] The upper die includes an upper punch plate 3, an upper stripper plate 2, and an upper clamping plate 1;

[0029] A punch mounting hole group 104 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 group 104 is divided into multiple punch mounting holes 101 by a first reinforcing wall 102. The first reinforcing wall 102 is used to enhance the punching resistance of the upper clamping plate 1. Each punch mounting hole 101 is used to install a corresponding strip-shaped sub-punch 103. Each strip-shaped sub-punch 103 includes an upper mounting part 105 and a lower punching part 106. Each strip-shaped sub-punch 103 is installed in the corresponding punch mounting hole 101 through the upper mounting part 105. The lower punching parts 106 of each strip-shaped punch 103 are connected in series to form a strip-shaped punch that is adapted to the strip-shaped hole to be punched.

[0030] 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.

[0031] Figure 1-4 In the middle, the dotted lines represent the perspective area.

[0032] It should be noted that in the prior art, one hole to be punched generally corresponds to one punch, and thus one punch mounting hole. This means that if an excessively long strip hole is punched, the corresponding punch mounting hole also needs to be long, resulting in the hollowed-out punch mounting hole spanning most of the upper clamping plate, greatly reducing the punching resistance of the upper clamping plate. The present invention uses a set of punch mounting hole groups 104 to correspond to one punching strip hole, and divides the punch mounting hole group 104 into multiple punch mounting holes 101 by the first reinforcing wall 102, thereby enhancing the punching resistance of the upper clamping plate 1. At the same time, the lower punching part 106 of the strip-shaped sub-punches 103 installed in a set of punch mounting hole groups 104 can also be connected in series to form a strip-shaped punch adapted to the strip hole to be punched, ensuring normal punching.

[0033] In one specific embodiment, the blanking hole 401 is divided into an upper pressure bearing hole 402 and a lower cutting hole 404. The upper pressure bearing hole 402 corresponds to the strip-shaped punching needle, and the lower cutting hole 404 is divided into multiple sub-holes by the second reinforcing wall 403. The second reinforcing wall 403 is used to enhance the punching resistance of the lower template 4.

[0034] It should be noted that the lower die is generally used to withstand stamping and requires high stamping resistance. In existing technologies, the blanking hole of the lower die needs to correspond to the shape of the punch. If an excessively long strip-shaped hole is being stamped, the corresponding blanking hole will also be longer, leading to a decrease in the stamping resistance of the lower die. In this embodiment of the invention, the blanking hole 401 is divided into an upper pressure-bearing hole 402 and a lower dividing hole 404. The upper pressure-bearing hole 402 corresponds to the strip-shaped punch, ensuring smooth stamping. The lower dividing hole 404 is divided into multiple sub-holes by a second reinforcing wall 403, which enhances the stamping resistance of the lower die 4.

[0035] Furthermore, the second reinforcing wall 403 is a wedge-shaped structure that gradually thins from bottom to top, and the second reinforcing wall 403 is used to cut the waste material.

[0036] It should be noted that the freshly stamped waste material is relatively large and difficult to discharge, which can lead to blockage. In this embodiment of the invention, a second reinforcing wall 403 can be used for cutting to reduce the volume of the discharged material and prevent blockage.

[0037] In one specific embodiment, the difference between the total length of the lower stamping portion 106 of each strip-shaped sub-punch 103 and the total length of each mounting hole is matched with the total length of each first reinforcing wall 102, so that the lower stamping portions 106 of adjacent strip-shaped sub-punches 103 abut in series. The punch structure can be as follows: Figure 4 As shown.

[0038] In one specific embodiment, such as Figure 5 As shown, the strip-shaped sub-punch 103 is divided into a stepped strip-shaped sub-punch 107 and a rectangular strip-shaped sub-punch 108. The length difference between the lower stamping part 106 and the upper mounting part 105 of the stepped strip-shaped sub-punch 107 matches the length of the first reinforcing wall 102. The lower stamping part 106 and the upper mounting part 105 of the rectangular strip-shaped sub-punch 108 have the same length. The stepped strip-shaped sub-punch 107 is inserted from the upper part of the punch mounting hole 101 and moves to one side so that the lower stamping part 106 fits into the first reinforcing wall 102. The rectangular strip-shaped sub-punch 108 is inserted from the upper part of the punch mounting hole 101 after the stepped strip-shaped sub-punch 103 is installed. Figure 5 This indicates the structure in which the stepped strip-shaped sub-punch 107 and the rectangular strip-shaped sub-punch 108 are embedded in the punch mounting hole 101.

[0039] It should be noted that the present invention employs two types of strip-shaped sub-punches 103 that can be installed from the upper part of the upper clamping plate 1, effectively avoiding damage to the lower punching part 106 of the punch during installation.

[0040] In one specific embodiment, the strip-shaped sub-punch 103 is inserted from the lower part of the punch mounting hole 101 so that the lower punching part 106 is fitted with the first reinforcing wall 102.

[0041] It should be noted that the advantage of installing from the bottom is that only one type of strip punch 103 needs to be used.

[0042] In one 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 for passing through the strip-shaped punching needle.

[0043] Furthermore, a first elastic telescopic member is connected between the upper clamping plate 1 and the upper stripping plate 2.

[0044] Furthermore, 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 set 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 set above the lower die base 6.

[0045] Furthermore, a second elastic telescopic component is provided between the lower unloading plate 5 and the lower mold base 6.

[0046] In one specific embodiment, a plurality of corresponding pin holes are provided around the punch mounting hole group 104 of the upper clamping plate 1 and around the blanking hole 401 of the lower template 4. The pin holes are used to install pins to strengthen the stamping resistance of the stamping die.

[0047] In a specific embodiment, a first guide hole 301 is provided on the upper punching plate 3, a second guide hole 501 is provided on the lower stripper plate 5, and a first guide post 601 is provided on the lower die base 6. The first guide hole 301, the second guide hole 501, and the first guide post 601 correspond to each other.

[0048] In this embodiment of the invention, a punch mounting hole group 104 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 group 104 is divided into multiple punch mounting holes 101 by a first reinforcing wall 102. The first reinforcing wall 102 is used to enhance the punching resistance of the upper clamping plate 1. Each punch mounting hole 101 is used to install a corresponding strip-shaped sub-punch 103. Each strip-shaped sub-punch 103 includes an upper mounting part 105 and a lower punching part 106. Each strip-shaped punch 103 is installed in the corresponding punch mounting hole 101 through the upper mounting part 105. The lower punching parts 106 of each strip-shaped punch 103 are connected in series to form a strip-shaped punch that is adapted to the strip-shaped hole to be punched. In this embodiment of the invention, a punch mounting hole group 104 is used instead of the existing structure with only one mounting hole. The mounting hole group is divided into multiple punch mounting holes 101 by a first reinforcing wall 102, which enhances the stamping resistance of the upper clamping plate 1. Furthermore, by installing strip-shaped sub-punches 103 in the punch mounting holes 101, the lower stamping parts 106 of the strip-shaped sub-punches 103 are connected in series to form strip-shaped punches that are adapted to the strip-shaped holes to be stamped, solving the joint problem at the reinforcing wall and ensuring that there are corresponding strip-shaped punches that can stamp the strip-shaped holes to be stamped. In this embodiment of the invention, the strip-shaped punches formed by the strip-shaped sub-punches 103 ensure the stamping of the required strip-shaped holes, while the reinforcing wall effectively enhances the stamping resistance of the upper clamping plate 1, preventing damage to the stamping die during the stamping process.

[0049] In this embodiment of the invention, the blanking hole 401 is divided into an upper pressure-bearing hole 402 and a lower cutting hole 404. The upper pressure-bearing hole 402 corresponds to the strip-shaped stamping needle, and the lower cutting hole 404 is divided into multiple sub-holes by a second reinforcing wall 403. The second reinforcing wall 403 is used to enhance the stamping resistance of the lower template 4. This embodiment of the invention further enhances the stamping resistance of the lower template 4 by using the second reinforcing wall 403, thereby improving the overall stamping resistance of the stamping die and preventing damage to the stamping die during the stamping process.

[0050] In this embodiment of the invention, the second reinforcing wall 403 is a wedge-shaped structure that gradually thins from bottom to top. The second reinforcing wall 403 is used to cut the waste material. By cutting the waste material, this embodiment of the invention reduces its size, making it easier to discharge and effectively preventing the discharge hole 401 from becoming clogged and avoiding damage to the mold.

[0051] In summary, the embodiments of the present invention can improve the stamping resistance of stamping dies when stamping strip holes and avoid damage to stamping dies during the stamping process.

[0052] 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.

[0053] 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.

[0054] 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 strip holes in a circuit board, characterized in that, include: Upper mold and lower mold; The upper die includes an upper punching plate, an upper stripping plate, and an upper clamping plate; The upper clamping plate has a punch mounting hole group at the position opposite to the strip hole to be punched on the target circuit board. The punch mounting hole group is divided into multiple punch mounting holes by a first reinforcing wall. The first reinforcing wall is used to enhance the punching resistance of the upper clamping plate. Each punch mounting hole is used to install a corresponding strip sub-punch. Each strip sub-punch includes an upper mounting part and a lower punching part. Each strip sub-punch is installed in the corresponding punch mounting hole through the upper mounting part, and the lower punching parts of each strip sub-punch abut against each other and are connected in series to form a continuous strip punch that matches the strip hole to be punched. The lower mold includes a lower template, a lower unloading plate, and a lower mold base; the lower template has a material discharge hole. The blanking hole is divided into an upper pressure bearing hole and a lower cutting hole. The upper pressure bearing hole corresponds to the strip-shaped punching needle. The lower cutting hole is divided into multiple sub-holes by a second reinforcing wall. The second reinforcing wall is used to enhance the punching resistance of the lower template. Furthermore, the second reinforcing wall is a wedge-shaped structure that gradually thins from bottom to top, and the second reinforcing wall is used to cut and divide the waste material; The strip-shaped sub-punch is divided into a stepped strip-shaped sub-punch and a rectangular strip-shaped sub-punch. The length difference between the lower stamping part and the upper mounting part of the stepped strip-shaped sub-punch matches the length of the first reinforcing wall. The lower stamping part and the upper mounting part of the rectangular strip-shaped sub-punch have the same length. The stepped strip-shaped sub-punch is inserted from the upper part of the punch mounting hole and moves to one side so that the lower stamping part fits into the first reinforcing wall. After the stepped strip-shaped sub-punch is installed, the rectangular strip-shaped sub-punch is inserted from the upper part of the punch mounting hole.

2. The circuit board strip hole punching die according to claim 1, characterized in that, The total length of the lower stamping portion of each of the strip-shaped sub-punches is matched with the difference between the total length of each of the mounting holes and the total length of each of the first reinforcing walls, so that the lower stamping portions of adjacent strip-shaped sub-punches abut in series.

3. The circuit board strip hole punching die according to claim 1, characterized in that, The inner contour of the upper blanking plate is a first rectangle that matches the target circuit board; the outer contour of the upper stripper plate is a second rectangle that matches the target circuit board; the upper stripper plate is disposed inside the upper blanking plate; the upper stripper plate has a punch guide hole for the passage of the strip-shaped punching needle; the lower template is adapted to the shape of the upper stripper plate; the inner contour of the lower stripper plate is adapted to the inner contour of the upper blanking 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.

Images