Crimping tool for reworking CPCI connector and reworking method

Abstract

The invention relates to the technical field of connector assembly, and provides a crimping tool for reworking a CPCI connector and a reworking method. The crimping tool for reworking the CPCI connector comprises a base, a supporting block and a crimping block, the base is used for placing a to-be-reworked circuit board which is crimped with the CPCI connector, and the base is provided with a plurality of mounting holes which penetrate through the base and are used for accommodating the CPCI connector; the at least one supporting block is mounted in the mounting hole, the plurality of guide holes are in one-to-one correspondence with pin holes in the circuit board, and the guide holes are used for allowing pins on the first side of the backboard connector to penetrate through; the side, facing the backboard connector, of the crimping block is provided with a plurality of accommodating grooves arranged side by side, and the accommodating grooves are used for accommodating pins on the second side of the backboard connector, so that the reworked backboard connector and the circuit board are crimped under the action of the crimping force of the crimping block on the backboard connector. The CPCI crimping tool can be adapted to rework and replacement of CPCI connectors at different positions, the universality of the crimping tool is enhanced, and the rework efficiency of the crimping tool is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of connector assembly, and in particular to a crimping tool and a reworking method for reworking a CPCI connector. Background Art

[0002] When connecting a CPCI connector to a circuit board, specialized tooling is required to assist in the connection between the CPCI connector and the circuit board to ensure a successful crimping connection between the two. The crimping between the circuit board and the CPCI connector typically uses a pinhole-type method, where the pins on the connector are pressed into the pinholes on the circuit board.

[0003] Because the CPCI connector consists of a backplane connector and a counter-pressure shell, practical applications require first crimping the backplane connector onto the circuit board, and then assembling the counter-pressure shell onto the exposed pins of the backplane connector on the other side of the circuit board. Currently, crimping tooling is only suitable for single-sided assembly of the crimped connector and the circuit board, meaning that the connector pins do not protrude from the circuit board, or the circuit board is exposed without the counter-pressure shell being installed. In actual production, if some of the multiple CPCI connectors already installed on the circuit board are damaged and need to be replaced, replacing only the damaged connectors will render the existing crimping tooling unusable because the backplane connectors are already installed on the counter-pressure shell, unlike the initial crimping state. Summary of the Invention

[0004] The present invention provides a crimping tool and a reworking method for CPCI connector rework, which are used to solve the problem that the crimping tool in the prior art is only suitable for assembling the CPCI connector and the circuit board for the first crimping on one side and cannot meet the crimping requirements for rework of the CPCI connector.

[0005] In order to solve the above technical problems, this application is implemented as follows: In a first aspect, the present invention provides a crimping tool for reworking a CPCI connector, comprising: A base, the base being used to place a circuit board that has been crimped with a CPCI connector and is to be reworked, the base being provided with a plurality of mounting holes in an area corresponding to the CPCI connector, the plurality of mounting holes penetrating the base along a thickness direction of the base, the mounting holes being used to accommodate the CPCI connector; A support block, at least one of which is mounted in the mounting hole, the support block being arranged corresponding to the backplane connector to be reworked, the support block being provided with a plurality of penetrating guide holes, the plurality of guide holes being arranged in a one-to-one correspondence with the pin holes on the circuit board, the guide holes being used for passing the pins on the first side of the backplane connector; A crimping block having a plurality of accommodating grooves arranged side by side on a side facing the backplane connector, the accommodating grooves being used to accommodate the pins on the second side of the backplane connector so that the reworked backplane connector can be crimped to the circuit board under the action of the crimping force of the crimping block on the backplane connector.

[0006] According to a crimping tool for reworking a CPCI connector provided by the present invention, the thickness of the support block is greater than the length of the pins on the first side of the reworked backplane connector exposed from the circuit board.

[0007] According to the present invention, a crimping tool for reworking a CPCI connector is provided, wherein the guide hole is a frustum structure; The large end of the frustum structure is arranged toward the circuit board, and the center axis of the frustum structure is coaxial with the center axis of the pin hole of the circuit board.

[0008] According to a crimping tool for rework of a CPCI connector provided by the present invention, the diameter range of the large head end of the frustum structure is 0.18mm to 0.22mm larger than the pin on the first side, and the diameter range of the small head end of the frustum structure is 0mm to 0.02mm larger than the pin on the first side.

[0009] According to a crimping tool for reworking a CPCI connector provided by the present invention, positioning holes are provided on both sides of the inner wall of the crimping block facing the backplane connector; The inner wall of the backplane connector has a positioning structure, the positioning hole is adapted to the positioning structure, and is arranged along the height direction of the crimping block.

[0010] According to a crimping tool for reworking a CPCI connector provided by the present invention, the groove walls on both sides of the accommodating groove are arranged in parallel, and the groove bottom of the accommodating groove is arranged in an arc shape.

[0011] According to a crimping tool for reworking a CPCI connector provided by the present invention, the hole wall of the mounting hole is inclined along the height direction of the base, and the hole diameter of the mounting hole on the side facing the circuit board is larger than the hole diameter on the side facing away from the circuit board; The outer wall of the support block is also arranged at an angle, and the outer wall of the support block is adapted to the inner wall of the mounting hole.

[0012] According to a crimping tool for reworking a CPCI connector provided by the present invention, a side of the base facing the circuit board has a groove, and the groove is used for clamping the circuit board.

[0013] According to a crimping tool for CPCI connector rework provided by the present invention, the base has a pick-up slot on a side facing the circuit board; The extending direction of the pickup slot is perpendicular to the groove. When the circuit board is clamped in the groove, two ends of the pickup slot are exposed at opposite sides of the circuit board. And / or, a circular arc angle is provided at a position where the groove is clamped with a corner of the circuit board.

[0014] In a second aspect, the present invention provides a method for reworking a CPCI connector using the crimping tool for reworking the CPCI connector as described above, comprising: Remove the pressure housing of the CPCI connector to be reworked from the circuit board and remove the backplane connector; Secure the base and place the support block into the mounting hole corresponding to the CPCI connector to be reworked; Place the circuit board to be reworked that has been crimped with the CPCI connector on the upper side of the base, ensuring that the CPCI connector that does not need to be reworked is accommodated in the mounting hole, and the pin holes of the circuit board corresponding to the CPCI connector to be reworked are arranged opposite to the guide holes of the support block; Install the replacement backplane connector at the position of the CPCI connector to be reworked on the side of the circuit board away from the base, so that the pins on the first side of the backplane connector extend into the pin holes of the circuit board, and install the crimping block into the pins on the second side of the backplane connector; Apply force to the crimping block to crimp the backplane connector and the circuit board, and install the pressure shell on the other side of the circuit board.

[0015] The present invention provides a crimping tool and a rework method for CPCI connector rework. After the damaged CPCI connector is disassembled, the crimping tool is used to assist in crimping during the assembly of a new backplane connector and a circuit board. The crimping tool comprises a base, a crimping block, and a support block. The base supports the backplane connector and is provided with a mounting hole to accommodate an undamaged CPCI connector that does not need to be disassembled. At least one support block is provided for being installed in a mounting hole corresponding to the backplane connector to be reworked. A guide hole is provided on the support block to accommodate the pins on the first side of the backplane connector. The crimping block is provided with an accommodating groove to accommodate the pins on the second side of the backplane connector, so that the backplane connector and the circuit board can be reworked. During the crimping process of the board, the accommodating groove can protect the pins on the second side of the backplane connector, and the guide holes can protect and guide the pins on the first side of the backplane connector, so that the pins on both sides of the backplane connector can be protected during the crimping process, avoiding deformation of the pins, and achieving reliability in the crimping process between the CPCI connector and the circuit board. In addition, the support block can be installed in different mounting holes as required, and the CPCI connector that does not need to be reworked can also be well supported by the base. It only needs to be disassembled and replaced for the reworked CPCI connector, which can adapt to the rework and replacement of CPCI connectors in different positions, thereby enhancing the universality of the crimping tooling and improving the rework efficiency of the crimping tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the main structure of the backplane connector provided by the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the pressure shell provided by the present invention.

[0019] Figure 3 The present invention is a schematic diagram of the installation of the CPCI connector and the circuit board.

[0020] Figure 4 It is a schematic diagram of the top structure of the support block provided by the present invention.

[0021] Figure 5 The present invention provides Figure 4 Schematic diagram of the cross-sectional structure.

[0022] Figure 6 It is a schematic diagram of the main structure of the crimping block provided by the present invention.

[0023] Figure 7 It is a schematic diagram of the top structure of the crimping block provided by the present invention.

[0024] Figure 8 It is a schematic diagram of the top structure of the base provided by the present invention.

[0025] Figure 9 The present invention provides Figure 8 Schematic diagram of the cross-sectional structure.

[0026] Figure 10 It is a flow chart of the method for reworking using a crimping tool provided by the present invention.

[0027] Reference numerals: 1. Crimping tooling; 11. Base; 12. Crimping block; 13. Support block; 111. Mounting hole; 112. Groove; 113. Pickup slot; 114. Arc angle; 121. Accommodation slot; 122. Positioning hole; 131. Guide hole; 1311. Large end; 1312. Small end. 2. CPCI connector; 21. Backplane connector; 22. Pressure housing; 211. Pins on the first side; 212. Pins on the second side; 3. Circuit board. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of explaining the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0033] The following combination Figures 1 to 10 , through specific embodiments and application scenarios, the crimping tool and rework method for CPCI connector rework provided by the embodiment of the present invention are described in detail.

[0034] First, as Figure 4 、 Figure 6 and Figure 8 As shown, this embodiment provides a crimping tool 1 for reworking a CPCI connector, comprising: a base 11 , a support block 13 and a crimping block 12 .

[0035] The base 11 is used to place the circuit board 3 that has been crimped with the CPCI connector 2 to be reworked. A plurality of mounting holes 111 are provided in the area of ​​the base 11 corresponding to the CPCI connector 2. The plurality of mounting holes 111 penetrate the base 11 along the thickness direction of the base 11, and the mounting holes 111 are used to accommodate the CPCI connector 2.

[0036] At least one support block 13 is installed in the mounting hole 111. The support block 13 is arranged corresponding to the backplane connector 21 to be reworked. The support block 13 is provided with a plurality of penetrating guide holes 131. The plurality of guide holes 131 are arranged one-to-one corresponding to the pin holes on the circuit board 3. The guide holes 131 are used for the pins 211 on the first side of the backplane connector 21 to pass through.

[0037] The side of the crimping block 12 facing the backplane connector 21 has a plurality of accommodating grooves 121 arranged side by side, and the accommodating grooves 121 are used to accommodate the pins 212 on the second side of the backplane connector 21, so that the reworked backplane connector 21 can be crimped with the circuit board 3 under the action of the crimping force of the crimping block 12 on the backplane connector 21.

[0038] It is understandable that if Figure 1 、 Figure 2 and Figure 3As shown, the CPCI connector 2 includes a backplane connector 21 and a pressure shell 22. When assembling the CPCI connector 2 with the circuit board 3, the backplane connector 21 and the pressure shell 22 are installed from both sides of the circuit board 3 respectively, and the pins 211 on the first side of the backplane connector 21 pass through the pin holes of the circuit board 3 and are inserted into the pin holes of the pressure shell 22.

[0039] There is typically one circuit board 3, and mounting areas corresponding to the CPCI connectors 2 are provided on the circuit board 3. Multiple mounting areas are typically provided, and the multiple mounting areas are spaced apart. Multiple CPCI connectors 2 are typically mounted on the circuit board 3. When some of the CPCI connectors 2 are damaged and need to be replaced, the damaged backplane connector 21 and pressure housing 22 are removed from the circuit board 3, and the replacement backplane connector 21 and pressure housing 22 are installed. In this embodiment, a crimping tool 1 is used to assist in the rework and installation of the CPCI connectors 2.

[0040] The base 11 provides mounting support for the circuit board 3. In this embodiment, a plurality of mounting holes 111 are provided on the base 11, and the mounting holes 111 can accommodate the CPCI connector 2. Therefore, when reworking the CPCI connector 2, only the damaged CPCI connector 2 needs to be removed, and the remaining undamaged CPCI connectors 2 can be left on the circuit board 3. Then, the circuit board 3 that has been crimped with the CPCI connector 2 is placed on the base 11, and the undamaged CPCI connectors 2 are aligned with the mounting holes 111 and installed. At this point, the circuit board 3 and the base 11 achieve good support, and there is no need to remove the pressure shell 22 of the crimped CPCI connector 2. Subsequently, only the reworked part of the CPCI connector 2 needs to be crimped, which saves the crimping process and improves the efficiency of rework.

[0041] In order to ensure the re-crimping effect of the backplane connector 21 and the circuit board 3 after rework, this embodiment provides a support block 13 to assist in the installation and crimping. The support block 13 is placed in the mounting hole 111. Specifically, only one support block 13 can be provided, and one support block 13 is sequentially placed in the mounting hole 111 corresponding to the CPCI connector 2 to be reworked. After completing the installation of a reworked backplane connector 21 and the circuit board 3, it is moved to the next mounting hole 111. Multiple support blocks 13 can also be provided, and multiple support blocks 13 are respectively placed in multiple mounting holes 111 corresponding to the backplane connector 21 to be reworked.

[0042] Because the pins 211 on the first side of the backplane connector 21 are relatively long, they are susceptible to deformation, bending, or even breakage during the crimping process between the backplane connector 21 and the circuit board 3 after passing through the pin holes of the circuit board 3. Therefore, in this embodiment, multiple guide holes 131 are provided on the support block 13. Because the guide holes 131 correspond one-to-one with the pin holes of the circuit board 3, that is, the multiple guide holes 131 correspond one-to-one with the pins on the first side of the backplane connector 21, the pins 211 on the first side can pass through the pin holes of the circuit board 3 and extend into the corresponding guide holes 131. Guided by the guide holes 131, the pins 211 on the first side can continue to move forward along the depth direction of the guide holes 131. Because the guide holes 131 guide and constrain the movement direction of the pins 211 on the first side, the pins 211 on the first side can remain in a vertical position during movement, thereby preventing the pins 211 on the first side from deforming or bending during movement. Furthermore, since each first-side pin 211 can extend into the corresponding guide hole 131 after passing through the circuit board 3, adjacent first-side pins 211 move within their respective corresponding guide holes 131, thereby avoiding mutual interference between adjacent first-side pins 211.

[0043] On the side of the circuit board 3 facing away from the base 11, the present embodiment provides a crimping block 12 to assist in the installation of the reworked backplane connector 21. A plurality of receiving grooves 121 are arranged side by side, and each receiving groove 121 corresponds to a row of pins 212 on the second side. The plurality of rows of receiving grooves 121 can accommodate multiple rows of pins 212 on the second side. When the crimping block 12 is installed on the reworked backplane connector 21, the pins 212 on the second side of the backplane connector 21 all extend into the receiving grooves 121, and the plane formed by the notch ends of the plurality of receiving grooves 121 abuts against the shell of the backplane connector 21. The thrust on the crimping block 12 can be directly transmitted to the backplane connector 21 through the plane of the notch end, thereby avoiding the pins 212 on the second side of the backplane connector 21 from being subjected to force, thereby protecting the pins 212 on the second side. Specifically, the groove depth of the receiving groove 121 is less than the height of the crimping block 12. The portion of the crimping block 12 without the receiving groove 121 is arranged away from the backplane connector 21, and the force of the crimping device is applied to the solid portion of the crimping block 12. The solid portion of the crimping block 12 avoids deformation when subjected to the force, and can also transmit the force to the portion of the receiving groove 121, so that the force applied to the crimping block 12 is transmitted through the solid portion, through the groove wall of the receiving groove 121, to the plane abutting the shell of the backplane connector 21, thereby achieving precise transmission of the force of the crimping device, and protecting the pins 212 on the second side from being shielded during the crimping process. The groove wall of the receiving groove 121 realizes the constraint on the transmission path of the crimping force.

[0044] The present invention provides a crimping tool 1 for CPCI connector rework. After the damaged CPCI connector 2 is disassembled, the crimping tool 1 is used to assist in crimping during the assembly process of the new backplane connector 21 and the circuit board 3. The crimping tool 1 includes a base 11, a crimping block 12 and a support block 13. The base 11 supports the backplane connector 21 and is provided with a mounting hole 111 to accommodate the CPCI connector 2 that is not damaged and does not need to be disassembled. At least one support block 13 is provided for being installed in the mounting hole 111 corresponding to the backplane connector 21 to be reworked, and a guide hole 131 is provided on the support block 13 to accommodate the pin 211 on the first side of the backplane connector 21. The crimping block 12 is provided with a receiving groove 121 to accommodate the pin 212 on the second side of the backplane connector 21, so that the backplane connector 21 can be reworked. During the crimping process of the backplane connector 21 and the circuit board 3, the accommodating groove 121 can protect the pins 212 on the second side of the backplane connector 21, and the guide hole 131 can protect and guide the pins 211 on the first side of the backplane connector 21, so that the pins on both sides of the backplane connector 21 can be protected during the crimping process, thereby avoiding deformation of the pins and achieving reliability in the crimping process of the CPCI connector 2 and the circuit board 3. In addition, the support block 13 can be installed in different mounting holes 111 as needed, and the CPCI connector 2 that does not need to be reworked can also be well supported by the base 11. Only the reworked CPCI connector 2 needs to be disassembled and replaced, which can adapt to the rework and replacement of CPCI connectors 2 in different positions, thereby enhancing the universality of the crimping tool 1 and improving the rework efficiency of the crimping tool 1.

[0045] like Figure 4 and Figure 5 As shown, the thickness of the support block 13 of this embodiment is greater than the length of the pins 211 on the first side of the reworked backplane connector 21 exposed from the circuit board 3 .

[0046] It will be appreciated that, to ensure that the pins 211 on the first side of the backplane connector 21 are protected along their entire length, the thickness of the base 11 in this embodiment is greater than the length of the pins 211 on the first side of the backplane connector 21 that protrude from the circuit board 3. In other words, the length of the guide holes 131 is greater than the length of the pins 211 on the first side that protrude from the circuit board 3. The pins 211 on the first side of the backplane connector 21 pass through the pin holes in the circuit board 3 and extend into the guide holes 131 without protruding from the guide holes 131. This further ensures that the pins 211 on the first side, after passing through the pin holes in the circuit board 3, are constrained by their respective guide holes 131, preventing interference with adjacent pins.

[0047] Specifically, the length of the guide hole 131 is 0.18-0.22 mm longer than the length of the pins 211 on the first side of the backplane connector 21 exposed from the circuit board 3 .

[0048] like Figure 4 and Figure 5As shown, the guide hole 131 of this embodiment is a truncated cone structure.

[0049] The large end 1311 of the frustum structure is arranged toward the circuit board 3 , and the center axis of the frustum structure is coaxial with the center axis of the pin hole of the circuit board 3 .

[0050] It is understandable that the inner diameter of the guide hole 131 of the frustum structure is slightly larger at one end and slightly smaller at the other end. The inner wall of the guide hole 131 is tilted relative to the central axis of the frustum structure. Since the large end 1311 of the frustum structure is arranged toward the circuit board 3, and the small end 1312 of the frustum structure is arranged toward the side of the base 11 away from the circuit board 3, the aperture of the guide hole 131 gradually shrinks along the thickness direction of the base 11. In the process of the pin 211 on the first side extending into the guide hole 131, the pin 211 on the first side is constrained and limited by the gradually shrinking circular hole, which is beneficial to the reliability and stability of the movement of the pin 211 on the first side relative to the base 11.

[0051] like Figure 4 and Figure 5 As shown, the diameter range of the large head end 1311 of the truncated cone structure in this embodiment is 0.18mm to 0.22mm larger than the pin 211 on the first side, and the diameter range of the small head end 1112 of the truncated cone structure is 0mm to 0.02mm larger than the pin 211 on the first side.

[0052] It is understood that the diameter of the large end 1311 of the truncated cone structure can be 0.18 mm, 0.2 mm, or 0.22 mm larger than the pin 211 on the first side. The diameter of the small end 1312 of the truncated cone structure can be 0 mm, 0.01 mm, or 0.02 mm larger than the pin 211 on the first side.

[0053] In one example, the diameter of the pin of the CPCI connector 2 is 0.6 mm. The diameter of the large end 1311 of the truncated cone structure of this embodiment can be 0.78 mm, 0.8 mm, or 0.82 mm. The diameter of the small end 1312 of the truncated cone structure of this embodiment can range from 0.6 mm, 0.61 mm, or 0.62 mm.

[0054] like Figure 6 and Figure 7 As shown, positioning holes 122 are provided on both sides of the inner wall of the crimping block 12 facing the backplane connector 21 in this embodiment.

[0055] The inner wall of the backplane connector 21 has a positioning structure. The positioning hole 122 is adapted to the positioning structure and is provided along the entire length of the crimping block 12 in the height direction.

[0056] It is understood that positioning holes 122 are provided on both sides of the crimping block 12, and the positioning holes 122 can cooperate with the positioning structure of the backplane connector 21. When the crimping block 12 is installed on the reworked backplane connector 21, the positioning holes 122 can quickly position the crimping block 12 relative to the backplane connector 21, so that each row of pins 212 on the second side of the backplane connector 21 corresponds to each receiving slot 121, without having to repeatedly adjust the relative positions of the pins and the receiving slots 121 on site. The positioning holes 122 of this embodiment improve the assembly efficiency of the crimping block 12 and the backplane connector 21, ensuring the accuracy of the assembly.

[0057] like Figure 6 and Figure 7 As shown, the groove walls on both sides of the accommodating groove 121 of this embodiment are arranged in parallel, and the groove bottom of the accommodating groove 121 is arranged in an arc shape.

[0058] It is understood that the groove walls on both sides of the receiving groove 121 are arranged in parallel, so that a receiving space is formed between the groove walls to accommodate the second-side pins 212. The groove bottom of the receiving groove 121 is arranged in an arc shape, which prevents the top of the inserted pin from contacting the receiving groove 121. The top of the pin 212 on the second side has an arc-shaped transition space, ensuring protection for the top of the pin 212 on the second side.

[0059] like Figure 5 and Figure 9 As shown, in this embodiment, the hole wall of the mounting hole 111 is inclined along the height direction of the base 11 , and the hole diameter of the mounting hole 111 on the side facing the circuit board 3 is larger than the hole diameter on the side away from the circuit board 3 .

[0060] The outer wall of the support block 13 is also inclined, and the outer wall of the support block 13 is adapted to the inner wall of the mounting hole 111 .

[0061] It is understood that because the wall of the mounting hole 111 is inclined, the outer wall of the support block 13 is also inclined. When the support block 13 is installed in the mounting hole 111, the inclined wall can guide the center of the support block 13 to coincide with the center of the mounting hole 111. This allows the guide hole 131 in the support block 13 to align with the pin hole on the circuit board 3, facilitating the insertion of the pin 211 on the first side of the backplane connector 21 into the guide hole 131.

[0062] Optionally, the angle between the outer wall of the support block 13 and the height direction of the support block 13 is α, and α can be 5°.

[0063] Optionally, the angle between the hole wall of the mounting hole 111 and the height direction of the base 11 is β, and β may also be 5°.

[0064] It should be noted that in order to ensure that there is no interference when the press-fitted CPCI connector 2 is assembled in the mounting hole 111 , the size of the hole wall at the end of the mounting hole 111 away from the circuit board 3 needs to be no smaller than the outer contour of the CPCI connector 2 .

[0065] like Figure 8 As shown, the base 11 of this embodiment has a groove 112 on the side facing the circuit board 3 , and the groove 112 is used for clamping the circuit board 3 .

[0066] It is understandable that the inner wall of the groove 112 is the same size as the circuit board 3, and the circuit board 3 can be clamped in the groove 112 to ensure that the circuit board 3 will not shake during the crimping process with the backplane connector 21, and it can also ensure that the pin holes on the circuit board 3 correspond to the positions of the guide holes 131 of the support block 13.

[0067] like Figure 8 As shown, the base 11 of this embodiment has a pickup groove 113 on the side facing the circuit board 3 .

[0068] The extending direction of the pickup slot 113 is perpendicular to the groove 112 . When the circuit board 3 is mounted in the groove 112 , two ends of the pickup slot 113 are exposed at opposite sides of the circuit board 3 .

[0069] It is understandable that after the circuit board 3 is crimped onto the backplane connector 21, the circuit board 3 and the base 11 are in close contact due to the crimping force, making it difficult to remove the circuit board 3 from the base 11. The pick-up slot 113 can accommodate the operator's fingers, so that the operator can use the fingers to pick up the circuit board 3, thereby facilitating the quick removal of the circuit board 3 from the base 11, thereby facilitating the subsequent assembly of the circuit board 3 with the counter-pressure housing 22.

[0070] Optionally, the present embodiment has multiple picking slots 113 , so that when the circuit board 3 is long, multiple fingers can be inserted into the multiple picking slots 113 to remove the circuit board 3 from the base 11 , thereby improving the efficiency of removing the circuit board 3 from the base 11 .

[0071] like Figure 8 As shown, in this embodiment, arc corners 114 are provided at the positions where the grooves 112 and the corners of the circuit board 3 are clamped.

[0072] It is understandable that because the groove 112 and the circuit board 3 are of the same size, the connection between the four corners of the circuit board 3 and the groove 112 is easily damaged by stress. To protect the four corners of the circuit board 3, this embodiment provides arc corners 114 at the locations where the groove 112 and the corners of the circuit board 3 are clamped. The arc corners 114 prevent the connection between the circuit board 3 and the groove 112 from being completely clamped, leaving a gap at the arc corners 114. During the crimping process between the circuit board 3 and the backplane connector 21, the stress on the corners of the circuit board 3 can be accommodated by the gaps in the arc corners 114, ensuring the integrity of the four corners of the circuit board 3 during the crimping process.

[0073] Second, as Figure 10 As shown, this embodiment provides a method for reworking a CPCI connector using the crimping tool 1 described above, comprising the following steps: Step 1011 , remove the pressure housing 22 of the CPCI connector 2 to be reworked from the circuit board 3 , and remove the backplane connector 21 .

[0074] It is understandable that before disassembling the reworked CPCI connector 2, first prepare the crimping tool 1 and the special tool, and call out the crimping program of the crimping device.

[0075] Determine the position of the CPCI connector 2 to be reworked on the circuit board 3, use a dedicated tool to remove the pressure housing 22 of the reworked CPCI connector 2 from the side of the circuit board 3 facing away from the backplane connector 21, and remove the backplane connector 21 from the other side of the circuit board 3. If only one of the multiple CPCI connectors 2 on the circuit board 3 needs to be reworked, only one is removed; if multiple CPCI connectors 2 need to be reworked, all of the multiple CPCI connectors 2 are removed from the circuit board 3.

[0076] Use a magnifying glass to check whether there are defects such as cracks in the copper cladding in the pin holes of the circuit board 3 of the CPCI connector 2 that has been disassembled and reworked, so as to prevent poor electrical contact after the CPCI connector 2 is replaced and crimped again.

[0077] Step 1012 : fix the base 11 and place the support block 13 in the mounting hole 111 corresponding to the CPCI connector 2 to be reworked.

[0078] It is understood that after the preparatory work is completed, the installation of the CPCI connector 2 is carried out. The base 11 is fixed on the workbench, and the support block 13 is placed in the corresponding mounting hole 111 of the base 11 according to the corresponding position of the CPCI connector 2 to be reworked on the circuit board 3, ensuring that the support block 13 is centered in the mounting hole 111.

[0079] In step 1013, the circuit board 3 to be reworked and which has been crimped with the CPCI connector 2 is placed on the upper side of the base 11, ensuring that the CPCI connector 2 that does not need to be reworked is accommodated in the mounting hole 111, and the pin holes of the circuit board 3 corresponding to the CPCI connector 2 to be reworked are arranged opposite to the guide holes 131 of the support block 13.

[0080] It is understandable that the remaining CPCI connectors 2 and the connecting parts of the circuit board 3 that do not require rework are placed on the upper side of the base 11, so that the CPCI connectors 2 that do not require rework are all accommodated in the corresponding mounting holes 111, and the position of the circuit board 3 relative to the base 11 is fine-tuned so that the pin holes of the circuit board 3 are aligned with the guide holes 131 of the support block 13.

[0081] Step 1014: Install the replacement backplane connector 21 at the position where the CPCI connector 2 is to be reworked on the side of the circuit board 3 facing away from the base 11, so that the pins 211 on the first side of the backplane connector 21 extend into the pin holes of the circuit board 3, and install the crimping block 12 into the pins 212 on the second side of the backplane connector 21.

[0082] It is understood that the replacement backplane connector 21 is placed on one side of the circuit board 3, with the pins 211 on the first side of the backplane connector 21 inserted into the pin holes of the circuit board 3. Then, the crimping block 12 is installed on the pins 212 on the second side of the backplane connector 21. The crimping block 12 and the backplane connector 21 are checked for proper placement and fine-tuned until they are properly positioned. The entire assembly is then placed into the crimping machine.

[0083] Step 1015 , applying force to the crimping block 12 to crimp the backplane connector 21 and the circuit board 3 , and installing the counter-compression housing 22 on the other side of the circuit board 3 .

[0084] It is understandable that the crimping equipment applies pressure to the crimping block 12 to crimp the backplane connector 21 and the circuit board 3. After the crimping is completed, it is checked whether the CPCI connector 2 is crimped into place. If it is correct, the pressure shell 22 is installed on the side of the circuit board 3 away from the backplane connector 21.

[0085] Since the rework method of this embodiment is based on the crimping operation of the crimping tool 1 for rework of the CPCI connector, the support block 13 is installed in the mounting hole 111 at the position corresponding to the CPCI connector 2 that needs to be reworked on the circuit board 3, and the support block 13 is used to support the pins 211 of the first side of the replaced backplane connector 21. At the same time, the CPCI connector 2 that does not need to be reworked is accommodated through the mounting holes 111 at other positions on the base 11, and there is no need to remove the counter-pressure shell 22 of the CPCI connector 2 that does not need to be reworked. The rework and re-crimping of the CPCI connector 2 crimped at any position on the circuit board 3 is achieved. Only the backplane connector 21 and the counter-pressure shell 22 of the CPCI connector 2 that needs to be reworked need to be disassembled, and there is no need to disassemble all CPCI connectors 2. This simplifies the operating procedure of reworking the CPCI connector 2 and improves the efficiency of rework.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A crimping tool for CPCI connector rework, characterized in that: include: A base, the base being used to place a circuit board that has been crimped with a CPCI connector and is to be reworked, the base being provided with a plurality of mounting holes in an area corresponding to the CPCI connector, the plurality of mounting holes penetrating the base along a thickness direction of the base, the mounting holes being used to accommodate the CPCI connector; A support block, at least one of which is mounted in the mounting hole, the support block being arranged corresponding to the backplane connector to be reworked, the support block being provided with a plurality of penetrating guide holes, the plurality of guide holes being arranged in a one-to-one correspondence with the pin holes on the circuit board, the guide holes being used for passing the pins on the first side of the backplane connector; A crimping block having a plurality of accommodating grooves arranged side by side on a side facing the backplane connector, the accommodating grooves being used to accommodate the pins on the second side of the backplane connector so that the reworked backplane connector can be crimped to the circuit board under the action of the crimping force of the crimping block on the backplane connector.

2. The crimping tool for CPCI connector rework according to claim 1, characterized in that: The thickness of the support block is greater than the length of the reworked pins on the first side of the backplane connector exposed from the circuit board.

3. The crimping tool for CPCI connector rework according to claim 1, characterized in that: The guide hole is in a truncated cone structure; The large end of the frustum structure is arranged toward the circuit board, and the center axis of the frustum structure is coaxial with the center axis of the pin hole of the circuit board.

4. The crimping tool for CPCI connector rework according to claim 3, characterized in that: The diameter range of the large head end of the truncated cone structure is 0.18mm to 0.22mm larger than that of the pins on the first side, and the diameter range of the small head end of the truncated cone structure is 0mm to 0.02mm larger than that of the pins on the first side.

5. The crimping tool for CPCI connector rework according to claim 1, characterized in that: Positioning holes are provided on both sides of the inner wall of the crimping block facing the backplane connector; The inner wall of the backplane connector has a positioning structure, the positioning hole is adapted to the positioning structure, and is arranged along the height direction of the crimping block.

6. The crimping tool for CPCI connector rework according to claim 1, characterized in that: The groove walls on both sides of the accommodating groove are arranged in parallel, and the groove bottom of the accommodating groove is arranged in an arc shape.

7. The crimping tool for CPCI connector rework according to claim 1, characterized in that: Along the height direction of the base, the hole wall of the mounting hole is inclined, and the hole diameter of the mounting hole on the side facing the circuit board is larger than the hole diameter on the side facing away from the circuit board; The outer wall of the support block is also arranged at an angle, and the outer wall of the support block is adapted to the inner wall of the mounting hole.

8. The crimping tool for CPCI connector rework according to claim 1, characterized in that: The base has a groove on one side facing the circuit board, and the groove is used for clamping the circuit board.

9. The crimping tool for CPCI connector rework according to claim 8, characterized in that: The base has a pickup slot on one side facing the circuit board; The extending direction of the pickup slot is perpendicular to the groove. When the circuit board is clamped in the groove, two ends of the pickup slot are exposed at opposite sides of the circuit board. And / or, a circular arc angle is provided at a position where the groove is clamped with a corner of the circuit board.

10. A method for reworking a CPCI connector using the crimping tool for reworking a CPCI connector according to any one of claims 1 to 9, characterized in that: include: Remove the pressure housing of the CPCI connector to be reworked from the circuit board and remove the backplane connector; Secure the base and place the support block into the mounting hole corresponding to the CPCI connector to be reworked; Place the circuit board to be reworked that has been crimped with the CPCI connector on the upper side of the base, ensuring that the CPCI connector that does not need to be reworked is accommodated in the mounting hole, and the pin holes of the circuit board corresponding to the CPCI connector to be reworked are arranged opposite to the guide holes of the support block; Install the replacement backplane connector at the position of the CPCI connector to be reworked on the side of the circuit board away from the base, so that the pins on the first side of the backplane connector extend into the pin holes of the circuit board, and install the crimping block into the pins on the second side of the backplane connector; Apply force to the crimping block to crimp the backplane connector and the circuit board, and install the pressure shell on the other side of the circuit board.

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