CN217290049U - Silver wire contact forming die - Google Patents

Abstract

The utility model discloses a silver wire contact forming die, which comprises a die body, wherein the die body comprises an upper die and a lower die, and a punching station, a silver wire vertical conveying station, a silver wire cutting station and a riveting forming station are sequentially formed on the upper surface of the lower die; the punching station, the silver wire vertical conveying station, the silver wire cutting station and the riveting and pressing forming station are sequentially positioned in the material belt conveying direction; the die body is provided with a vertical wire feeding mechanism for vertically ejecting the silver wire into the material belt through hole, a wire cutting mechanism for cutting the silver wire into strip-shaped silver particles, and a press riveting forming mechanism for stamping and deforming the strip-shaped silver particles into I-shaped silver contacts; the vertical wire feeding mechanism and the wire cutting mechanism are positioned below the silver wire cutting station; the pressure riveting forming mechanism is positioned above the riveting forming station. This application has guaranteed the concentricity of silver grain in shell fragment riveting through-hole through the mode that vertical direction sent the line, has improved electric contact riveting quality.

Description

Silver wire contact forming die

Technical Field

The utility model relates to an equipment contact technique especially relates to a silver wire contact forming die.

Background

The silver contact refers to an intersection point where the silver contact and the spring plate need to be riveted when the electronic appliance is opened or closed and the silver contact and the spring plate are separated and contacted with each other. At present, the production mode of silver contact assembly on the shell fragment is mainly through the automatic riveting silver contact of punch press, generally including being used for passing through the stamping die of press riveting silver contact material on the shell fragment, a horizontal linear vibration feeder for carrying silver contact material to stamping die in through vibrations mode, current silver contact material is prefabricated into the nail form, the horizontal linear vibration feeder of horizontal direction pay-off sends the silver contact material of nail form into on the mounting hole on the shell fragment, then carry out the punching press riveting through top board and the holding down plate of press, so that form "worker" font silver contact on the shell fragment.

However, the existing automatic riveting silver contact device for the punch press has the following defects:

(1) the existing silver contact material needs to be made into a nail-shaped silver contact material in advance, namely, the silver wire needs to be manufactured through the procedures of upsetting processing, post-treatment, heat treatment and the like.

(2) The feeding mode of the existing silver contact material in the horizontal direction is complex, and a nail-shaped silver contact material needs to be fed into a die cavity by using a vibrating disc, a linear guide rail and compressed air before riveting; and the direction of nail form silver contact need be screened to the pay-off in-process, keeps the horizontal downthehole just can the leading-in mounting hole of shell fragment of nail, so the aperture of mounting hole needs to be established greatly, makes things convenient for the pay-off to target in place smoothly.

(3) In the punching press working process, the riveting rod diameter of adopting on the press is littleer than silver contact diameter, and including silver contact self volume is less, and upper and lower clamp plate is at pressfitting in-process each other, and the unable accurate silver contact center department of beating of riveting rod is located, and under great mounting hole, the silver contact is ectopic easily to it is inhomogeneous to send silver contact atress, leads to the concentricity of silver contact upper surface and lower surface after the riveting shaping low, and the riveting quality is poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a silver wire contact forming die.

The purpose of the utility model is realized by adopting the following technical scheme: a silver wire contact forming die is characterized by comprising a die body, wherein the die body comprises an upper die and a lower die, and a punching station, a silver wire vertical conveying station, a silver wire cutting station and a riveting forming station are sequentially formed on the upper surface of the lower die; the punching station, the silver wire vertical conveying station, the silver wire cutting station and the riveting and pressing station are sequentially positioned in the material belt conveying direction;

the die body is provided with a vertical wire feeding mechanism for vertically ejecting the silver wire into the material belt through hole, a wire cutting mechanism for cutting the silver wire into strip-shaped silver particles, and a press riveting forming mechanism for stamping and deforming the strip-shaped silver particles into I-shaped silver contacts; the vertical wire feeding mechanism and the wire cutting mechanism are positioned below the silver wire cutting station; the pressure riveting forming mechanism is positioned above the riveting forming station.

Furthermore, the vertical wire feeding mechanism comprises a material guide, two wire feeding wheels, two rotating shafts and two groups of driving components; a wire cavity is formed in the material guide, and the silver wires are arranged in the wire cavity of the material guide; the two wire feeding wheels are symmetrically arranged, wire clamping cavities are formed in the wheel surfaces of the two wire feeding wheels and are communicated with the wire cavity of the material guide; the two wire feeding wheels are respectively sleeved on the rotating shafts, the two groups of driving assemblies respectively drive the two rotating shafts to rotate, and the rotating shafts drive the two wire feeding wheels to synchronously rotate, wherein the rotating directions of the two wire feeding wheels are opposite; the wheel surface of one wire feeding wheel is attached to the wheel surface of the other wire feeding wheel, and the silver wire is ejected out to the wire outlet side through the rotation of the two wire feeding wheels in a friction force and extrusion mode.

Furthermore, each group of driving components comprises a wire feeding transmission rod, a wire feeding transmission block, a wire feeding return spring and a one-way wheel; the one-way wheel is sleeved on the rotating shaft and is arranged on one side of the wire feeding transmission block; the wire feeding transmission rod is arranged in a die cavity of the lower die, is punched by an upper punch rod positioned in the die cavity of the upper die to move downwards and is abutted against one side, far away from the one-way wheel, of the wire feeding transmission block; the wire feeding reset spring is arranged below the wire feeding transmission block and provides restoring force for resetting the wire feeding transmission block.

Furthermore, the vertical wire feeding mechanism also comprises a wire feeding length adjusting block, and a spring installation cavity is arranged in the wire feeding length adjusting block; the wire feeding return spring is installed in the spring installation cavity, and one end of the wire feeding return spring abuts against the wire feeding transmission block.

Furthermore, the vertical wire feeding mechanism also comprises a mounting seat for mounting a material guide and two wire feeding wheels and a fixing frame for mounting two rotating shafts.

Furthermore, the wire cutting mechanism comprises a movable cutter block, a fixed blade, a cutter block fixing block, a movable sliding block, a slotting cutter and a wire cutting reset spring; a cutter block mounting cavity is concavely arranged at the top of the material guide, and the movable cutter block is mounted in the cutter block mounting cavity; the fixed blade is positioned on the upper surface of the movable blade and is fixedly limited in the blade fixing block, and the blade fixing block is fixedly limited in the lower die cavity and is positioned on the upper surface of the movable sliding block; the movable sliding block is sleeved on the outer wall of the material guide, the slotting tool is positioned at the top of the movable sliding block, the slotting tool descends, the movable sliding block drives the material guide to move horizontally, and the movable tool block at the top of the material guide and the fixed blade are relatively horizontally displaced; the tangent reset spring is arranged in the die cavity of the lower die, and one end of the tangent reset spring is abutted against the movable sliding block to provide restoring force for the reset of the movable sliding block.

Further, the pressure riveting forming mechanism comprises an upper riveting pressing block and a lower riveting pressing block; the upper riveting block is arranged in a film cavity of the upper film, and the lower riveting block is arranged in a die cavity of the lower film; the upper riveting block is positioned right above the lower riveting block, and an I-shaped stamping cavity is arranged on the contact surface of the lower riveting block and the upper riveting block.

Furthermore, a plurality of riveting forming stations are arranged on the upper surface of the lower die.

Furthermore, the silver wire contact forming die also comprises a stamping station arranged behind the riveting and pressing forming station, and a stamping mechanism for stamping the shape of the elastic sheet in the material belt is arranged on the stamping station; the punching mechanism comprises a plurality of upper punching blocks designed according to the shape and the structure of a product and lower punching blocks matched with the upper punching blocks for use.

Furthermore, the silver wire contact forming die also comprises a slitting station arranged behind the stamping station, and a slitting mechanism used for cutting and stripping the formed elastic sheets is arranged on the slitting station; the slitting mechanism comprises an upper slitting punch and a discharge chute.

Compared with the prior art, the beneficial effects of the utility model reside in that:

this application adopts silver line contact forming die, increases perpendicular line feeding mechanism and tangent line mechanism in the mould, carries silver line through perpendicular mode, then the tangent line to carry out disposable riveting shaping through riveting mechanism, the mode that the line was sent to vertical direction has guaranteed that the silver grain is concentric in the shell fragment riveting through-hole, has improved riveting quality and precision. In addition, the concentricity of the silver particles in the riveting through hole of the elastic sheet is ensured by the wire feeding mode in the vertical direction, meanwhile, the hole diameter of the riveting through hole on the elastic sheet can be designed to be smaller, the silver particles are ensured not to be easy to misplace, and the follow-up phenomenon that the riveting quality is poor due to uneven stress of the silver contact is avoided.

(2) The vertical wire feeding mechanism and the wire cutting mechanism are combined on the same station, so that the stations for horizontally feeding rivets such as a vibrating disc, a linear guide rail and compressed air of the existing silver wire contact forming die are omitted, and the device is simpler and easier.

(3) The design of this device has removed the process that current silver contact material need make nail form silver contact material in advance from, and the preparation technology is simple and easy, and electric contact quality precision is high, and the process is controllable, and is with low costs, efficient.

Drawings

Fig. 1 is a schematic structural view of a silver wire contact forming mold according to a preferred embodiment of the present invention;

fig. 2 is a schematic view of a first longitudinal section of a silver wire contact forming mold according to a preferred embodiment of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is an enlarged view of area B of FIG. 2;

FIG. 5 is an enlarged view of area C of FIG. 2;

FIG. 6 is an enlarged view of area D of FIG. 2;

FIG. 7 is an enlarged schematic view of region E in FIG. 2;

fig. 8 is a schematic second longitudinal sectional view of the silver wire contact forming mold according to the preferred embodiment of the present invention;

FIG. 9 is an enlarged schematic view of region F of FIG. 8;

FIG. 10 is a schematic view of a partial structure of a vertical wire feeding mechanism according to a preferred embodiment of the present invention;

FIG. 11 is a schematic structural view of a mounting seat of the vertical wire feeding mechanism according to the preferred embodiment of the present invention;

fig. 12 is a third schematic longitudinal sectional view of a silver wire contact forming mold according to a preferred embodiment of the present invention;

fig. 13 is an enlarged view of region G in fig. 12.

In the figure: 100. a mold body; 101. an upper die; 102. a lower die; 1. a punching mechanism; 11. punching and stripping the material insert; 12. punching a lower cutter block; 13. punching a needle; 2. a vertical wire feeding mechanism; 21. a material guide; 22. a wire feeding wheel; 23. a rotating shaft; 24. a wire feeding transmission rod; 25. a wire feeding transmission block; 26. a one-way wheel; 27. a wire feeding return spring; 28. an upper punch stem; 29. a wire feeding length adjusting block; 210. a mounting seat; 2101. a material guide limiting cavity; 2102. a wire feeding wheel limiting cavity; 2103. a rotating shaft limiting cavity; 211. a fixed mount; 212. assisting the bolt rod; 213. a complementary bolt drive link; 3. a wire cutting mechanism; 31. moving the cutter block; 32. fixing a blade; 33. a cutter block fixing block; 34. moving the slide block; 35. inserting a cutter; 36. a tangent return spring; 4. a press riveting forming mechanism; 41. riveting and pressing blocks; 42. riveting down and pressing the block; 43. an I-shaped stamping cavity; 5. a stamping mechanism; 51. stamping the blocks; 6. a slitting mechanism; 61. an upper dividing punch; 62. a discharge chute; a. a punching station; b. a silver wire vertical conveying station; c. a silver wire cutting station; d. riveting and forming stations; e. a stamping station; f. a slitting station; H. a material belt; y1, silver wire; y2, silver particles.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1 to 13, a silver wire contact forming die comprises a die body 100, wherein the die body 100 comprises an upper die 101 and a lower die 102, and the upper die and the lower die are guided by a guide post and a guide sleeve. A punching station a, a silver wire vertical conveying station b, a silver wire cutting station c, a riveting forming station d, a punching station e and a slitting station f are sequentially formed on the upper surface of the lower die; the punching station, the silver wire vertical conveying station, the silver wire cutting station, the riveting forming station, the punching station and the slitting station are sequentially positioned in the conveying direction of the material belt H;

the die body is provided with a punching mechanism 1 for punching holes in the material belt, a vertical wire feeding mechanism 2 for vertically ejecting silver wires into the material belt through holes, a wire cutting mechanism 3 for cutting the silver wires Y1 into strip silver particles Y2, a press riveting forming mechanism 4 for punching and deforming the strip silver particles into I-shaped silver contacts, and a punching mechanism 5 for punching the shapes of elastic sheets in the material belt; a slitting mechanism 6 for cutting and peeling the formed shrapnel as shown in fig. 2-8.

As shown in fig. 3, a punching mechanism 1 is arranged on the punching station, and the punching mechanism 1 comprises an upper punch stripping insert 11 positioned in the upper die cavity and a lower punch block 12 positioned in the lower die cavity; a punching needle 13 is arranged in the upper punch hole stripping insert; when the upper die moves downwards, the upper punching stripping insert is pressed downwards, the punching needle is ejected out, and a material belt to be punched on the punching station is punched in a penetrating mode to form a through hole for a silver wire to extend into, wait for cutting and riveting to form a silver contact.

And a vertical wire feeding mechanism 2 and a wire cutting mechanism 3 are arranged on the vertical silver wire conveying station, and the vertical wire feeding mechanism and the wire cutting mechanism are positioned below the silver wire cutting station.

Specifically, as shown in fig. 4, 8-9,10-13, the vertical wire feeding mechanism 2 includes a material guider 21, two wire feeding wheels 22, two rotating shafts 23, and two sets of driving components; a wire cavity is formed in the material guide, and the silver wires are arranged in the wire cavity of the material guide; the two wire feeding wheels are symmetrically arranged, wire clamping cavities are formed in the wheel surfaces of the two wire feeding wheels and are communicated with the wire cavity of the material guide; the two wire feeding wheels are respectively sleeved on the rotating shafts, the two groups of driving assemblies respectively drive the two rotating shafts to rotate, and the rotating shafts drive the two wire feeding wheels to synchronously rotate, wherein the rotating directions of the two wire feeding wheels are opposite; the wheel surface of one wire feeding wheel is attached to the wheel surface of the other wire feeding wheel, and the silver wire is ejected out to the wire outlet side through the rotation of the two wire feeding wheels in a friction force and extrusion mode, so that the wire feeding purpose is achieved.

Each group of driving components comprises a wire feeding transmission rod 24, a wire feeding transmission block 25, a one-way wheel 26 and a wire feeding return spring 27; the one-way wheel is sleeved on the rotating shaft and is arranged on one side of the wire feeding transmission block; the wire feeding transmission rod is arranged in a die cavity of the lower die, is punched by an upper punch rod 28 positioned in the die cavity of the upper die to move downwards and is abutted against one side, far away from the one-way wheel, of the wire feeding transmission block; the wire feeding reset spring is arranged below the wire feeding transmission block and provides restoring force for resetting the wire feeding transmission block.

When the two upper punch rods 28 positioned on the upper die synchronously move downwards, the two upper punch rods 28 are punched to the wire feeding transmission rod, the wire feeding transmission rod moves downwards and is abutted against one side of the wire feeding transmission block to move downwards along the tangential direction of the corresponding rotating shaft, the wire feeding reset spring 27 positioned below the wire feeding transmission block is pressed, the one-way wheels on the two wire feeding transmission blocks drive the corresponding wire feeding wheel 22 to synchronously and reversely rotate, and the silver wire is ejected out to the wire outlet side through the wheel surface friction force and the extrusion mode of the wire feeding wheel and extends into a through hole punched by the punching mechanism on the material belt to wait for cutting the silver wire.

The vertical wire feeding mechanism further comprises a wire feeding length adjusting block 29, and a spring installation cavity is arranged in the wire feeding length adjusting block; the wire feeding return spring is installed in the spring installation cavity, and one end of the wire feeding return spring abuts against the wire feeding transmission block. The wire feeding transmission rod 24 moves downwards under the driving of the upper film, the wire feeding transmission block 25 is pressed downwards, and the wire feeding transmission block 25 drives the wire feeding wheel 22 to synchronously rotate reversely. The wire feeding length adjusting block 29 adjusts the movement distance of the wire feeding transmission block by adjusting the distance of the wire feeding return spring, thereby adjusting the rotation amplitude of the wire feeding wheel and finally adjusting the length of the wire feeding.

In addition, the vertical wire feeding mechanism further comprises a mounting seat 210 for mounting a material guide and two wire feeding wheels and a fixing frame 211 for mounting two rotating shafts. Be equipped with the spacing chamber 2101 of guide, the spacing chamber 2102 of wire feeding wheel and the spacing chamber 2103 of pivot on this mount pad, during the installation, the guide corresponds with the wire feeding wheel and installs in the spacing intracavity that corresponds, and the spacing intracavity of pivot of mount pad is worn to establish at the middle part of two pivots, and the both ends of two pivots are installed on the mount, but two pivots all can the free rotation on mount pad and mount. The mounting seat is slidably mounted in the fixing frame, a gap is reserved between the mounting seat and the fixing frame, a supplementary bolt rod 212 is arranged above the gap, and a supplementary bolt transmission rod 213 is arranged right above the supplementary bolt rod. This subsidy bolt transfer line is installed in the die cavity of last mould, and the subsidy bolt pole is installed in the die cavity of lower mould, and when the upper film downstream, the subsidy bolt transfer line pushes down the subsidy bolt pole, and the subsidy bolt pole downstream stretches into in the clearance between mount pad and the mount to promote the mount pad and remove along the pivot axial direction on the mount. This mount pad, mount, subsidy bolt pole, subsidy bolt transfer line structure and the removal slider simultaneous movement in the design cooperation tangent line mechanism of position can guarantee the tangent line in-process, and the silver-colored line is not dragged the broken string, has guaranteed the continuity and the line body quality of sending the line.

As shown in fig. 4, 8-9, a thread cutting mechanism 3 is arranged on the silver thread cutting station, and specifically, the thread cutting mechanism 3 includes a movable knife block 31, a fixed knife 32, a knife block fixing block 33, a movable slider 34, a slotting cutter 35, and a thread cutting return spring 36; a cutter block mounting cavity is concavely arranged at the top of the material guide, and the movable cutter block is mounted in the cutter block mounting cavity; the fixed blade is positioned on the upper surface of the movable blade and is fixedly limited in the blade fixing block, and the blade fixing block is fixedly limited in the lower die cavity and is positioned on the upper surface of the movable sliding block; the movable sliding block is sleeved on the outer wall of the material guide, the slotting tool is positioned at the top of the movable sliding block, the slotting tool descends, the movable sliding block drives the material guide to move horizontally, and the movable tool block at the top of the material guide and the fixed blade are relatively horizontally displaced; the tangent reset spring is arranged in the die cavity of the lower die, and one end of the tangent reset spring is abutted against the movable sliding block to provide restoring force for the reset of the movable sliding block.

The slotting tool and the auxiliary bolt transmission rod are both positioned in the die cavity of the upper die, when the upper die moves downwards, the slotting tool and the auxiliary bolt transmission rod are correspondingly abutted against the movable slider and the mounting seat at the same time, the movable slider and the mounting seat are synchronously driven to move along the same direction, the material guide devices positioned in the movable block and the mounting seat synchronously move at the moment, the movable tool block positioned at the top of the material guide devices correspondingly moves and is horizontally displaced relative to the fixed tool, and the purpose of silver wire cutting is achieved.

As shown in fig. 5, a rivet pressing mechanism 4 is provided on the rivet pressing station. The pressure riveting forming mechanism 4 comprises an upper riveting pressing block 41 and a lower riveting pressing block 42; the upper riveting block is arranged in a film cavity of the upper film, and the lower riveting block is arranged in a die cavity of the lower film; the upper riveting block is positioned right above the lower riveting block, and an I-shaped punching cavity 43 is arranged on the contact surface of the lower riveting block and the upper riveting block.

As a further preferred scheme, a plurality of riveting and pressing forming stations are arranged on the upper surface of the lower die. The design of a plurality of riveting forming stations enables the silver particles to be more neat and smooth in surface under repeated riveting.

When the upper die moves downwards, the upper riveting block is correspondingly abutted against the lower riveting block, and silver particles left on the through hole of the material belt after cutting are riveted to the I-shaped electric contact, so that the purpose of riveting is realized.

As shown in fig. 6, a punching mechanism 5 for punching the shape of the elastic sheet in the material belt is arranged on the punching station. The punching mechanism comprises a plurality of upper punching blocks 51 designed according to the shape and structure of the product and lower punching blocks (not shown in the figure) matched with the upper punching blocks; the upper punch block is arranged in a film cavity of the upper film, and the lower punch block is arranged in a die cavity of the lower film if the lower punch block exists; the upper punch block is positioned right above the lower punch block.

As shown in fig. 7, a slitting mechanism 6 for cutting and peeling the formed elastic sheet is provided at the slitting station. The slitting mechanism 6 comprises an upper slitting punch 61 and a discharge chute 62; the upper dividing punch is arranged in a film cavity of the upper film, and the discharge chute is arranged in a die cavity of the lower film; the upper dividing punch is positioned right above the discharge chute.

When the upper die moves downwards, the elastic sheet riveted with the electric contact is cut and stripped by the upper cutting and dividing punch head, and falls into the discharge chute for collection, so that the manufacture of the elastic sheet is completed.

Taking a vehicle-mounted seat switch action elastic sheet as an example, the vehicle-mounted seat switch action elastic sheet is formed by riveting and pressing a silver alloy rivet through a conventional process, and the rivet is horizontally fed into a die cavity through a vibrating disc, a linear guide rail and compressed air to complete the horizontal rivet feeding mode. And in this embodiment, adopt the utility model discloses a device adopts the mode preparation I-shaped rivet of sending the line perpendicularly, has removed the complicated preparation technology of conventional silver alloy rivet from, and this technology is simple and convenient, and off-the-shelf electric contact concentricity is high, and the precision is high, and is of high quality. The specific processing technology for the vertical wire feeding specifically comprises the following steps:

(1) punching: the material belt enters a die from one side of a punching station, when an upper die moves downwards, an upper punching stripper insert 11 is pressed downwards, a punching needle 13 is ejected out, the material belt to be punched on the punching station is punched in a penetrating manner, and a through hole for a silver wire to extend into and wait for being cut and riveted into a silver contact is formed; and the material belt after the punching process moves continuously to the other side and enters a silver wire cutting station.

(2) Vertically feeding wires: after entering a silver wire cutting station, when two upper punch rods 28 on the upper die synchronously move downwards, the two upper punch rods 28 are punched to the wire feeding transmission rod 24, the wire feeding transmission rod 24 moves downwards and abuts against one side of the wire feeding transmission block 24 to move downwards along the tangential direction of the corresponding rotating shaft 23, a wire feeding reset spring 27 below the wire feeding transmission block 25 is pressed, one-way wheels 26 on the two wire feeding transmission blocks 25 drive the corresponding wire feeding wheel 22 to synchronously and reversely rotate, and the silver wire is ejected out to the wire outlet side through the wheel surface friction force and the extrusion mode of the wire feeding wheel 22 and extends into a through hole punched by a punching mechanism on a material belt to wait for cutting the silver wire.

(3) Cutting: the slotting tool 35 and the auxiliary bolt transmission rod 213 are both located in the die cavity of the upper die, when the upper die moves downwards, the slotting tool 35 and the auxiliary bolt transmission rod 213 are correspondingly abutted against the movable slider 34 and the mounting seat 210 at the same time, the movable slider 34 and the mounting seat 210 are synchronously driven to move along the same direction, the material guide 21 located in the movable block and the mounting seat synchronously moves at the moment, the movable tool block 31 located at the top of the material guide correspondingly moves, and moves horizontally relative to the fixed tool 32, so that the purpose of silver wire cutting is achieved. And the material belt after the silver wire cutting process continues moving towards the other side and enters a riveting and forming station.

(4) Riveting: when the upper die moves downwards, the upper riveting block 41 is correspondingly abutted against the lower riveting block 42, and silver particles left on the through holes of the material belt after cutting are riveted to the I-shaped electric contacts, so that the aim of riveting is fulfilled. And the material belt after the riveting and pressing forming process continues moving towards the other side and enters a stamping station.

(5) Stamping: when the upper die moves downwards, the upper punch block 51 abuts on the material belt on the surface of the lower die, and the material belt is punched into the shape of the required elastic piece, such as the shape of the elastic piece, the bent elastic piece and the like, and the process is a conventional operation process. After the processing of the overall shape of the elastic sheet is finished, the material belt continues to move towards the other side and enters a slitting station.

(6) Cutting and stripping: when the upper die moves downwards, the elastic sheet riveted with the electric contact is cut and stripped by cutting the upper cutting punch 61 and falls into a discharge chute for collection, and the manufacturing of the elastic sheet is completed.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. A silver wire contact forming die is characterized by comprising a die body, wherein the die body comprises an upper die and a lower die, and a punching station, a silver wire vertical conveying station, a silver wire cutting station and a riveting forming station are sequentially formed on the upper surface of the lower die; the punching station, the silver wire vertical conveying station, the silver wire cutting station and the riveting and pressing station are sequentially positioned in the material belt conveying direction;

the die body is provided with a vertical wire feeding mechanism for vertically ejecting the silver wire into the material belt through hole, a wire cutting mechanism for cutting the silver wire into strip-shaped silver particles, and a press riveting forming mechanism for stamping and deforming the strip-shaped silver particles into I-shaped silver contacts; the vertical wire feeding mechanism and the wire cutting mechanism are positioned below the silver wire cutting station; the pressure riveting forming mechanism is positioned above the riveting forming station.

2. The silver wire contact forming die of claim 1, wherein the vertical wire feeding mechanism comprises a material guide, two wire feeding wheels, two rotating shafts and two groups of driving components; a wire cavity is formed in the material guide, and the silver wires are arranged in the wire cavity of the material guide; the two wire feeding wheels are symmetrically arranged, wire clamping cavities are formed in the wheel surfaces of the two wire feeding wheels and are communicated with the wire cavity of the material guide; the two wire feeding wheels are respectively sleeved on the rotating shafts, the two groups of driving assemblies respectively drive the two rotating shafts to rotate, the rotating shafts drive the two wire feeding wheels to synchronously rotate, and the rotating directions of the two wire feeding wheels are opposite; the wheel surface of one wire feeding wheel is attached to the wheel surface of the other wire feeding wheel, and the silver wire is ejected out to the wire outlet side through the rotation of the two wire feeding wheels in a friction force and extrusion mode.

3. The silver wire contact forming die of claim 2, wherein each set of the driving components comprises a wire feeding transmission rod, a wire feeding transmission block, a wire feeding return spring and a one-way wheel; the one-way wheel is sleeved on the rotating shaft and is arranged on one side of the wire feeding transmission block; the wire feeding transmission rod is arranged in a die cavity of the lower die, is punched by an upper punch rod positioned in the die cavity of the upper die to move downwards and is abutted against one side, far away from the one-way wheel, of the wire feeding transmission block; the wire feeding reset spring is arranged below the wire feeding transmission block and provides restoring force for resetting the wire feeding transmission block.

4. The silver wire contact forming die of claim 3, wherein the vertical wire feeding mechanism further comprises a wire feeding length adjusting block, and a spring installation cavity is arranged in the wire feeding length adjusting block; the wire feeding reset spring is installed in the spring installation cavity, and one end of the wire feeding reset spring abuts against the wire feeding transmission block.

5. The silver wire contact forming die of claim 2, wherein the vertical wire feeding mechanism further comprises a mounting seat for mounting the material guide and the two wire feeding wheels and a fixing frame for mounting the two rotating shafts.

6. The silver wire contact forming die of claim 2, wherein the wire cutting mechanism comprises a movable knife block, a fixed knife, a knife block fixing block, a movable sliding block, a slotting knife and a wire cutting return spring; a cutter block mounting cavity is concavely arranged at the top of the material guide, and the movable cutter block is mounted in the cutter block mounting cavity; the fixed blade is positioned on the upper surface of the movable blade and is fixedly limited in the blade fixing block, and the blade fixing block is fixedly limited in the lower die cavity and is positioned on the upper surface of the movable sliding block; the movable sliding block is sleeved on the outer wall of the material guide, the slotting tool is positioned at the top of the movable sliding block, the slotting tool descends, the movable sliding block drives the material guide to move horizontally, and the movable tool block at the top of the material guide and the fixed blade are relatively horizontally displaced; the tangent reset spring is arranged in the die cavity of the lower die, and one end of the tangent reset spring is abutted against the movable sliding block to provide restoring force for the reset of the movable sliding block.

7. The silver wire contact forming die of claim 1, wherein the press riveting forming mechanism comprises an upper riveting pressing block and a lower riveting pressing block; the upper riveting block is arranged in a film cavity of the upper film, and the lower riveting block is arranged in a die cavity of the lower film; the upper riveting block is positioned right above the lower riveting block, and an I-shaped stamping cavity is arranged on the contact surface of the lower riveting block and the upper riveting block.

8. The silver wire contact forming die of claim 7, wherein the lower die has a plurality of riveting stations on the upper surface.

9. The silver wire contact forming die of any one of claims 1 to 8, further comprising a stamping station disposed after the riveting forming station, wherein the stamping station is provided with a stamping mechanism for stamping a shape of the spring plate in the material strip; the punching mechanism comprises a plurality of upper punching blocks designed according to the shape and the structure of a product and lower punching blocks matched with the upper punching blocks for use.

10. The silver wire contact forming die of any one of claims 1 to 8, further comprising a slitting station disposed after the punching station, wherein the slitting station is provided with a slitting mechanism for cutting and peeling the formed spring plate; the slitting mechanism comprises an upper slitting punch and a discharge chute.

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