Bending die structure for metal shielding shell of electric connector

Abstract

The utility model relates to the field of manufacturing of electric connectors, and provides a bending die structure for a metal shielding shell of an electric connector. Comprising a lower die base, a stripper plate and an upper die base, a pair of discharging punches and three bending punches are installed on the upper die base, sliding grooves corresponding to the three bending punches are formed in the stripper plate, sliding blocks are installed in the sliding grooves respectively, the sliding blocks are connected with inclined supporting parts, slope faces attached to the outer side faces of the bending punches are arranged at the bottoms of the inclined supporting parts, and the inclined supporting parts are connected with the discharging punches. A transmission rod is installed on the upper die base, and in the descending process of the upper die base, the transmission rod makes contact with the sliding block and pushes the sliding block to extrude the bending punch. The three bending punches are matched with the bending base to achieve simultaneous bending of three faces, the transmission rod pushes the sliding block, the sliding block extrudes the bending punches, the bent faces are corrected, the working procedures of six work stations in the prior art are achieved through the arrangement of the work station and the sliding block in the die, the size of the die can be effectively reduced, and the working efficiency of the die is improved. The mold cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric connector manufacturing, specifically relates to a kind of electric connector metal shielding shell bending die structure. BACKGROUND

[0002] Various electric connectors are installed on computer, server and other products, such as memory, video card slot connector, USB, network socket connector and the like. With the increase of transmission speed of various chips, signals between different connectors or different terminals of the same connector will interfere with each other. The general way is to take metal shell to shield signals.

[0003] When shielding signals of electric connector with metal shell, at least four shielding surfaces are needed in addition to the insertion end of the connector and the mating surface between the connector and the mainboard. Therefore, at least one blanking and three bending are needed in the stamping process of the metal shell. In the traditional stamping process, the three bending is carried out in three steps. After each bending, the metal elastic rebound needs to be corrected, which requires at least 6 workstations in the bending process, which increases the length and volume of the stamping die, and the die needs more spare parts, which increases the cost of the die. SUMMARY

[0004] In order to reduce the cost of the die and simplify the structure of the die, the utility model provides a kind of electric connector metal shielding shell bending die structure.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of electric connector metal shielding shell bending die structure, including lower die seat, stripper plate and upper die seat, stripper plate is located between upper and lower die seat, a plurality of guide columns are installed on lower die seat, stripper plate and upper die seat move vertically along guide column, a pair of blanking punch and three bending punch are installed on the upper die seat, the top end of blanking punch is matched with the mounting hole of upper die seat, blanking punch is matched with the corresponding mounting hole on stripper plate with clearance, the lower end of blanking punch is matched with the cutting edge of lower die seat to form shearing blanking;The head of bending punch is supported in the mounting hole of upper die seat by rotating pin, each bending punch is matched with the corresponding mounting hole on upper die seat and stripper plate with clearance, the bottom of each bending punch is matched with the bending structure on lower die seat to form shearing with clearance, to realize right-angle bending;Three bending punches correspond to three side surfaces of shielding shell, and adjacent bending punches are perpendicular to each other;Three sliding grooves corresponding to bending punch are provided on the stripper plate, and a sliding block is installed in each sliding groove, the sliding block is connected with inclined strut portion, the bottom of inclined strut portion is provided with slope surface matched with the outer side surface of bending punch, transmission rod is installed on the upper die seat, and the transmission rod contacts with sliding block and pushes sliding block to extrude bending punch during the downward movement of upper die seat.

[0007] Further, the bottom side of the bending punch is provided with an open pin slot, and a bending pin is installed in the open pin slot, and the outer circular surface of the bending pin is matched with the bending structure of the corresponding lower die seat.

[0008] Further, an adjusting rod is installed in the upper die seat, the end of the adjusting rod is provided with an inclined surface, the inclined surface of the end of the adjusting rod is matched with the top of the transmission rod, and when the adjusting rod moves, the inclined surface extrudes the head of the transmission rod and adjusts the matching stroke of the transmission rod and the sliding block.

[0009] Further, the lower die seat comprises a bending seat at the middle position and blanking seats at both sides, the blanking punch is matched with the shearing edge of the blanking seat to shear and blank, the bending punch is matched with the side surface of the bending seat to bend, and the side surface of the bending seat is inwardly inclined by 10° or less.

[0010] Further, the width of the bending punch corresponds to the width of the bending surface of the shielding shell.

[0011] Still further, each of the bending punches corresponds to two sliding blocks.

[0012] After the above technical scheme is adopted, the beneficial effects of the present application are as follows: three bending punches are matched with the bending seat to realize the simultaneous bending of three surfaces, the sliding block is pushed by the transmission rod, the sliding block extrudes the bending punch, the bent bending surface is corrected, the process of six work stations in the prior art is realized by one work station in the die and the setting of the sliding block, the volume of the die can be effectively reduced, and the cost of the die is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present application.

[0014] Figure 2 It is an internal structural schematic diagram of the present application.

[0015] Figure 3 It is a sectional view of the stripper plate.

[0016] In the figure: lower die seat 1, stripper plate 2, upper die seat 3, guide column 4, material belt 5, blanking punch 6, bending punch 7, rotating pin 71, bending pin 72, sliding groove 8, sliding block 9, inclined support part 10, bending seat 11, blanking seat 12, transmission rod 13, adjusting rod 14. DETAILED DESCRIPTION

[0017] The specific implementation manner of the present application will be further described in combination with the accompanying drawings:

[0018] As Figure 1As shown, a bending die structure of a metal shielding shell of an electrical connector is composed of a lower die base 1, a stripper plate 2 and an upper die base 3. The stripper plate 2 is located between the upper and lower die bases. A plurality of guide columns 4 are installed on the lower die base 1. The stripper plate 2 and the upper die base 3 move vertically along the guide columns 4. Springs are installed on the guide columns 4 to facilitate stripping and resetting after stamping. A material belt 5 passes between the lower die base and the stripper plate. The lower die base 1 is provided with a positioning and feeding structure of the material belt. The power for moving the upper die base 3 is provided by a punch to realize continuous stamping of the material belt.

[0019] The lower die base 1 includes a bending seat 11 at the middle position and lower material seats 12 at both sides of the width direction of the material belt. A pair of lower material punches 6 and three bending punches 7 are installed on the upper die base 3. The pair of lower material punches 6 correspond to the pair of lower material seats 12. The top end of the lower material punch 6 is in loose fit with the mounting hole of the upper die base 3. The lower material punch 6 is in clearance fit with the corresponding mounting hole on the stripper plate 2. The lower end of the lower material punch 6 is in loose fit with the cutting edge of the lower material seat 12 of the lower die base 1 to form shearing after loose stamping. The clearance between the lower material punch 6 and the lower material seat 12 is smaller than the thickness of the material belt.

[0020] The bending punch 7 is a plate-shaped punch. Three bending punches 7 correspond to three sides of the shielding shell. Adjacent bending punches 7 are perpendicular to each other. The width of the bending punch 7 corresponds to the width of the bending surface of the shell. The head of the bending punch 7 is rotatably supported in the mounting hole of the upper die base 3 through a rotating pin 71. The bending punch 7 is in clearance fit with the corresponding mounting holes on the upper die base 3 and the stripper plate 2. During the stamping and bending process, the bending punch 7 can be slightly displaced to avoid leaving die marks and damaging the bending surface. The bottom side of the bending punch 7 forms a shearing with clearance with the side of the bending seat 11 of the lower die base 1 to realize right-angle bending. The clearance is not less than the thickness of the material belt. An open pin slot is provided on the bottom side of the bending punch. A bending pin 72 is installed in the open pin slot. The outer cylindrical surface of the bending pin 72 is in fit with the bending seat 11 of the lower die base 1. During the bending process, the bending pin 72 can rotate to avoid damaging the bending surface. Considering that the metal will rebound slightly after bending, the side of the bending seat 11 is inclined inward by about 10°. During the bending process, each bending surface is actually bent more than 90° to accommodate the rebound amount.

[0021] In order to correct after bending, a sliding groove 8 corresponding to the three bending punches is provided on the stripper plate. Each bending punch is provided with two sliding grooves 8 distributed along the width direction of the outer side. A sliding block 9 is installed in each sliding groove 8. The sliding block 9 is connected with an inclined support part 10. The bottom end of the inclined support part 10 is provided with a slope surface abutting against the outer side of the bending punch 7. A transmission rod 13 is installed on the upper die base 3. During the downward movement of the upper die base 3, the bottom end of the transmission rod 12 contacts with the sliding block 9 and pushes the inclined support part 10 to press the bending punch 7. The bending punch 7 contacts the bending surface again to realize correction.

[0022] The present technical scheme realizes that the blanking punch 6 is firstly used for blanking, the bending punch 7 is secondly used for bending, and the sliding block finally pushes the bending punch to realize correction through the length settings of the blanking punch 6, the bending punch 7 and the transmission rod 13.

[0023] In order to adjust the correction amount and the time point of correction, an adjusting rod 14 is installed in the upper die seat, the adjusting rod 14 is perpendicular to the transmission rod 13, the end of the adjusting rod 14 is provided with an inclined surface, the inclined surface of the end of the adjusting rod 14 cooperates with the top of the transmission rod, and when the adjusting rod 14 is adjusted along the length direction, the inclined surface extrudes the head of the adjusting rod transmission rod 13 and adjusts the length of the transmission rod 13 to extend, so as to adjust the time and stroke of the adjusting rod 13 pushing the sliding block.

Claims

1. A bending die structure for a metal shielding shell of an electrical connector, comprising a lower die base, a stripper plate, and an upper die base, wherein the stripper plate is located between the upper and lower die bases, and multiple guide pillars are mounted on the lower die base; the stripper plate and the upper die base move vertically along the guide pillars, characterized in that, The upper die base is equipped with a pair of blanking punches and three bending punches. The top of the blanking punches is interference-fitted with the mounting holes of the upper die base, and the blanking punches are clearance-fitted with the corresponding mounting holes on the stripper plate. The lower end of the blanking punches is in contact with the cutting edge of the lower die base to form a shearing blank. The head of the bending punches is rotatably supported in the mounting holes of the upper die base by a pivot pin. Each bending punch is clearance-fitted with the corresponding mounting holes of the upper die base and the stripper plate. The bottom of each bending punch forms a shearing with a gap between it and the bending structure on the lower die base to achieve a right-angle bend. The three bending punches correspond to the three sides of the shielding shell, and adjacent bending punches are perpendicular to each other. The stripper plate is provided with three grooves corresponding to the three bending punches. A slider is installed in each groove. The slider is connected to a diagonal support. The bottom of the diagonal support is provided with a slope that fits against the outer side of the bending punch. A transmission rod is installed on the upper die base. During the downward movement of the upper die base, the transmission rod contacts the slider and pushes the slider to squeeze the bending punch.

2. The bending die structure for an electrical connector metal shielding housing according to claim 1, characterized in that, The bottom side of the bending punch is provided with a cotter pin groove, and a bending pin is installed in the cotter pin groove. The outer circular surface of the bending pin is engaged with the bending structure of the corresponding lower die base for bending.

3. The bending die structure for an electrical connector metal shielding housing according to claim 1, characterized in that, An adjusting rod is installed inside the upper mold base. The end of the adjusting rod is provided with an inclined surface. The inclined surface at the end of the adjusting rod cooperates with the top of the transmission rod. When the adjusting rod moves, its inclined surface presses against the head of the transmission rod and adjusts the cooperation stroke between the transmission rod and the slider.

4. The bending die structure for an electrical connector metal shielding housing according to claim 1, characterized in that, The lower die base includes a bending seat in the middle and blanking seats on both sides. The blanking punch cooperates with the shearing edge of the blanking seat to cut blanks. The bending punch cooperates with the side of the bending seat to bend. The side of the bending seat is inclined inward at less than 10°.

5. The bending die structure for an electrical connector metal shielding housing according to claim 1, characterized in that, The width of the bending punch corresponds to the width of the bending surface of the shielding shell.

6. The bending die structure for a metal shielding housing of an electrical connector according to claim 5, characterized in that, The two sliders corresponding to each of the bending punches.

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