A stamping positioning jig for positioning a shielding sheet to achieve precise stamping

Abstract

This utility model relates to the field of shielding sheet processing technology, and in particular to a stamping positioning fixture for positioning shielding sheets to achieve precise stamping. It is used to position the shielding sheet for stamping processing, and includes a fixed plate and a changing template. The lower end of the fixed plate has a receiving groove, and multiple long grooves extending through the upper part of the fixed plate are formed within the receiving groove. The changing template is mated in the receiving groove, and multiple support strips matching the long grooves are provided on the changing template. The support strips cooperate with the long grooves to form a groove structure for positioning the shielding sheet. The modular design effectively improves the accuracy and adaptability of the shielding sheet stamping. The cooperation between the fixed plate and the changing template, along with the dual positioning function of the positioning pins, ensures the dimensional accuracy of the outer and inner frames of the shielding sheet, meeting the high-precision requirements of electronic equipment for interface shielding structures.

Description

Technical Field

[0001] This utility model relates to the field of shielding sheet processing technology, and in particular to a stamping positioning fixture for positioning shielding sheets to achieve precise stamping. Background Technology

[0002] In the manufacturing process of electronic devices, to reduce the impact of electromagnetic interference on device performance and to prevent electromagnetic radiation generated by the device itself from interfering with other devices, shielding material is usually applied around the interfaces of the electronic devices. Taking an Ethernet interface (RJ-45 interface) as an example, since a device often has multiple interfaces, the shielding material needs to be made into a special structure with multiple corresponding interface shapes, such as... Figure 5 As shown, it is long and narrow with multiple cutout areas that fit the interface, resembling a specific planar outline shape.

[0003] However, numerous challenges arise in actual production. Firstly, due to the limited dimensions of the interface side of the product, extremely high precision is required for the outer frame of the shielding material and the corresponding inner frame of the interface. Dimensional deviations may prevent the shielding material from accurately fitting around the interface, thus affecting the shielding effect and failing to meet the stringent electromagnetic compatibility requirements of electronic equipment. Secondly, the raw materials for making shielding materials are typically strip-shaped structures, and precise matching between the raw material and the die is crucial during the stamping process. Poor matching can lead to inconsistent dimensions and shape deviations in the stamped shielding sheets, increasing the scrap rate and raising production costs.

[0004] Currently, existing stamping positioning methods are insufficient to meet the aforementioned high-precision production requirements. Some traditional positioning fixtures can only position shielding materials of a specific thickness. When the dimensions and thickness of the raw material change, the fixture needs to be replaced, which is cumbersome and inefficient, severely impacting production progress. Moreover, these traditional fixtures have limited positioning accuracy, failing to guarantee the accurate position of the shielding material during the stamping process, making it difficult to achieve high-precision machining of the outer and inner frames of the shielding sheet.

[0005] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A stamping positioning fixture for positioning shielding sheets to achieve precise stamping is used to position the shielding sheets for stamping processing. It includes a fixed plate and a changing template. The lower end of the fixed plate has a receiving groove with multiple long grooves extending through the upper part of the fixed plate. The changing template is mated in the receiving groove and has multiple support strips matching the long grooves. The support strips cooperate with the long grooves to form a groove structure for positioning the shielding sheet. The front end of the changing template extends to form a fixing part that abuts against the front side of the fixed plate. The fixing part is screwed to the front end of the fixed plate. A countersunk hole is formed at the rear of the changing template, and a threaded hole corresponding to the countersunk hole is formed in the receiving groove. The changing template and the fixed plate are screwed together through the countersunk hole and the threaded hole. A positioning pin is also provided on the changing template, and a pin hole is formed on the fixed plate to mate with the positioning pin. The positioning pin can extend along the pin hole to the top of the fixed plate. The stamping positioning fixture also includes a positioning film for positioning and attaching the shielding sheet, which is positioned on the fixed plate by the positioning pin.

[0008] Preferably, both the receiving groove and the elongated groove extend to penetrate the rear side of the fixed plate.

[0009] Preferably, there are four locating pins and four pin holes, which are distributed on both sides of the long groove.

[0010] Preferably, the front end of the fixing plate is provided with a fitting groove that matches the fixing part, and the fixing part is embedded in the fitting groove.

[0011] Preferably, both the fixing part and the fitting groove are provided with multiple fitting grooves corresponding to the number of long grooves, and the multiple fitting grooves are located directly in front of the multiple long grooves.

[0012] Preferably, both the countersunk hole and the threaded hole are provided with four evenly distributed holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are: Modular design effectively improves the precision and adaptability of shielding sheet stamping. The cooperation between the fixed plate and the template, along with the dual positioning function of the positioning pins, ensures the dimensional accuracy of the outer and inner edges of the shielding sheet, meeting the high precision requirements of electronic equipment for interface shielding structures. The detachable connection between the template and the fixed plate allows for the adaptation of shielding materials of various thicknesses by changing different template specifications, eliminating the need for a complete jig replacement, simplifying the operation process, and improving equipment versatility. The cooperation between the positioning film and the positioning pins enables rapid positioning of the sheet. Combined with the alignment of the strip-shaped raw material with the mold, it reduces the scrap rate caused by dimensional deviations, lowers production costs, and improves production efficiency, making it suitable for modern large-scale production needs.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is another structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the disassembled structure from one perspective of this utility model; Figure 4 This is a schematic diagram of the disassembled structure from another perspective of this utility model; Figure 5 This is a schematic diagram of the structure of the shielding sheet of this utility model.

[0017] The reference numerals and names in the figure are as follows: Fixed plate 10, receiving groove 11, long groove 12, threaded hole 13, pin hole 14, fitting groove 15, template replacement 20, support bar 21, fixed part 22, countersunk hole 23, positioning pin 24, positioning film 30. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figure 1-4In this embodiment of the utility model, a stamping positioning fixture for positioning shielding sheets to achieve precise stamping is used to position the shielding sheets to complete the stamping process. It includes a fixed plate 10 and a changing template 20. The lower end of the fixed plate 10 has a receiving groove 11, and multiple long grooves 12 extending through the upper end of the fixed plate 10 are formed within the receiving groove 11. The changing template 20 is mated in the receiving groove 11, and multiple support strips 21 matching the long grooves 12 are provided on the changing template 20. The support strips 21 and the long grooves 12 cooperate to form a groove structure for positioning the shielding sheet. The front end of the changing template 20 extends to form a fixing part 22 that abuts against the front side of the fixed plate 10, fixing... Part 22 is screwed to the front end of the fixing plate 10. A countersunk hole 23 is provided at the rear of the template 20. A threaded hole 13 corresponding to the countersunk hole 23 is provided in the receiving groove 11. The template 20 and the fixing plate 10 are screwed together through the countersunk hole 23 and the threaded hole 13. A positioning pin 24 is also provided on the template 20, and a pin hole 14 is provided on the fixing plate 10 to engage with the positioning pin 24. The positioning pin 24 can extend along the pin hole 14 to the top of the fixing plate 10. The stamping positioning fixture also includes a positioning film 30 for positioning and attaching the shielding sheet. The positioning film 30 is positioned on the fixing plate 10 by the positioning pin 24.

[0020] In practical applications, the receiving groove 11 at the lower end of the fixed plate 10 is connected to the changing template 20. The support strip 21 on the changing template 20 cooperates with the long groove 12 of the fixed plate 10 to form a groove structure for positioning the shielding sheet, ensuring that the shielding sheet is stably placed along a preset trajectory during the stamping process. The changing template 20 is connected to the front end of the fixed plate 10 by the fixing part 22 and the rear is fixed by the screw cooperation between the countersunk hole 23 and the threaded hole 13 in the receiving groove 11. At the same time, the docking of the positioning pin 24 with the pin hole 14 of the fixed plate 10 ensures the accuracy of the installation position of the changing template 20. The positioning film 30 is positioned above the fixed plate 10 by the positioning pin 24 and is used to pre-attach the shielding sheet to achieve rapid alignment of the sheet and the fixture. For shielding materials of different thicknesses, the changing template 20 with the matching support strip 21 can be replaced to match the groove structure size with the material thickness, thereby completing the precise stamping process.

[0021] Through this design, the stamping positioning fixture effectively improves the accuracy and adaptability of shielding sheet stamping through modular design. The cooperation between the fixing plate 10 and the changing template 20, along with the dual positioning function of the positioning pin 24, ensures the dimensional accuracy of the outer and inner edges of the shielding sheet, meeting the high-precision requirements of electronic equipment for interface shielding structures. The detachable connection between the changing template 20 and the fixing plate 10 allows for the adaptation of shielding materials of various thicknesses by replacing different specifications of the changing template 20, eliminating the need for a complete fixture replacement, simplifying the operation process, and improving equipment versatility. The cooperation between the positioning film 30 and the positioning pin 24 enables rapid positioning of the sheet. Combined with the alignment of the strip-shaped raw material with the mold, it reduces the scrap rate caused by dimensional deviations, lowering production costs while improving production efficiency, making it suitable for modern large-scale production needs.

[0022] Please see Figure 2-4 Based on the above technical solution, it is further proposed that both the receiving groove 11 and the long groove 12 be extended to penetrate the rear side of the fixed plate 10. This setting can accommodate shielding sheets of different lengths. At the same time, the through design facilitates the strip-shaped raw materials to pass through the rear side of the fixed plate 10 and extend along the long groove 12, so as to realize the continuous feeding of raw materials and adapt to the continuous stamping requirements of automated production lines.

[0023] Please see Figure 1-4 Based on the above technical solution, it is further proposed that four positioning pins 24 and four pin holes 14 are provided, which are distributed on both sides of the long groove 12. This can form a multi-point uniform limiting effect on the positioning film 30, avoiding the positioning film 30 from shifting or wrinkling due to uneven force at a single point during the application of the shielding sheet or the stamping process. This ensures that the shielding sheet is always precisely aligned with the groove structure formed by the long groove 12 and the support strip 21, further improving the processing dimensional accuracy of the outer and inner frames of the sheet. At the same time, the four symmetrically distributed positioning pins 24 and the pin holes 14 cooperate to form an all-round calibration of the docking position of the replacement template 20 and the fixing plate 10, effectively offsetting the unilateral offset error that may occur during the installation of the replacement template 20, and strengthening the assembly accuracy of the replacement template 20 and the fixing plate 10.

[0024] Please see Figure 1-4Based on the above technical solution, it is further proposed that the front end of the fixing plate 10 is provided with a fitting groove 15 that matches the fixing part 22, and the fixing part 22 is embedded in the fitting groove 15. Compared with the simple screw connection, the mechanical limiting structure is added, which can effectively limit the front and rear displacement or lateral displacement of the template 20 caused by external force impact during the stamping process, and ensure that the relative position of the template 20 and the fixing plate 10 is always stable, thereby ensuring that the groove structure formed by the support strip 21 and the long groove 12 is continuously and accurately aligned with the shielding sheet. Both the fixing part 22 and the fitting groove 15 are provided with multiple fitting grooves corresponding to the number of long grooves 12. The multiple fitting grooves 15 are located directly in front of the multiple long grooves 12. Each support bar 21 area of ​​the replacement template 20 can form an independent front-end fixation, avoiding deformation caused by uneven local stress of the replacement template 20. Especially for continuous stamping of strip-shaped raw materials, it can provide more uniform support and positioning for the material in the long groove 12, reduce local displacement of the material during the stamping process, further improve the consistency of the shielding sheet frame size, and at the same time, the inlay structure also reduces the stress load on the screw connection, extends the service life of the fixture, and improves the reliability of the overall structure.

[0025] Please see Figure 3-4 Based on the above technical solution, it is further proposed that the countersunk hole 23 and the threaded hole 13 are each provided with four evenly distributed holes; this avoids deformation of the template 20 or loose fit with the fixing plate 10 due to excessive local stress, and ensures that the support bar 21 and the long groove 12 always maintain precise fit, thereby stabilizing the dimensional accuracy of the positioning groove structure; at the same time, the evenly distributed connection method can disperse the impact force generated during the stamping process, reduce thread wear or fixture deformation caused by stress concentration after long-term use, and extend the service life of the equipment.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A stamping positioning fixture for positioning shielding sheets to achieve precise stamping, used to position the shielding sheets to complete the stamping process, characterized in that, The assembly includes a fixed plate (10) and a replacement template (20). The lower end of the fixed plate (10) is provided with a receiving groove (11), and multiple long grooves (12) extending through the upper end of the fixed plate (10) are provided in the receiving groove (11). The replacement template (20) is mated in the receiving groove (11), and multiple support strips (21) matching the long grooves (12) are provided on the replacement template (20). The support strips (21) and the long grooves (12) cooperate to form a groove structure for positioning and shielding sheet. The front end of the replacement template (20) extends to form a fixing part (22) that abuts against the front side of the fixed plate (10). The fixing part (22) is screwed to the front end of the fixed plate (10). The rear part of the replacement template (20) A countersunk hole (23) is provided at the position, and a threaded hole (13) corresponding to the countersunk hole (23) is provided in the receiving groove (11). The template (20) and the fixing plate (10) are connected by screws through the countersunk hole (23) and the threaded hole (13). A positioning pin (24) is also provided on the template (20), and a pin hole (14) is provided on the fixing plate (10) to engage with the positioning pin (24). The positioning pin (24) can extend along the pin hole (14) to the top of the fixing plate (10). The stamping positioning fixture also includes a positioning film (30) for positioning and attaching the shielding sheet. The positioning film (30) is positioned on the fixing plate (10) by the positioning pin (24).

2. The stamping positioning fixture for positioning shielding sheets to achieve precise stamping according to claim 1, characterized in that, Both the receiving groove (11) and the long groove (12) extend to penetrate the rear side of the fixing plate (10).

3. A stamping positioning fixture for positioning shielding sheets to achieve precise stamping according to claim 1, characterized in that, There are four positioning pins (24) and four pin holes (14), which are distributed on both sides of the long groove (12).

4. A stamping positioning fixture for positioning shielding sheets to achieve precise stamping according to claim 1, characterized in that, The front end of the fixing plate (10) is provided with a fitting groove (15) that matches the fixing part (22), and the fixing part (22) is embedded in the fitting groove (15).

5. A stamping positioning fixture for positioning shielding sheets to achieve precise stamping according to claim 4, characterized in that, Both the fixing part (22) and the fitting groove (15) are provided with multiple fitting grooves corresponding to the number of long grooves (12), and the multiple fitting grooves (15) are located directly in front of the multiple long grooves (12).

6. A stamping positioning fixture for positioning shielding sheets to achieve precise stamping according to claim 1, characterized in that, The countersunk hole (23) and the threaded hole (13) are both provided with four evenly distributed holes.

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