A riveting device and riveting method for a riveting contact assembly

Abstract

The invention discloses a riveting device and a riveting method for a riveted contact assembly, and particularly relates to the technical field of contact assembly riveting equipment. The contacts on the vibration plate of the riveting device are transported to the pre-riveting forming needles in the lower template through a material feeding guide rail, and the material strip is supported and positioned by the supporting pins in the lower template; the first positioning member and the second positioning member in the lower template respectively position the rear side and the left and right sides of the contacts; when the upper die seat moves downward, it drives the first upper punch and the second upper punch, and the first upper punch acts on the pre-riveting movable needle in the upper template through the action of the upper spring, so that the pre-riveting movable needle adjusts the riveting end of the contact to keep concentric with the riveting hole of the material strip; the lower end of the second upper punch passes through the upper template and acts on the upper end of the force transmission rod in the lower template, and the force transmission rod pushes one end of the seesaw mechanism in the lower pad, and then the other end of the seesaw mechanism drives the lower ejector in the lower template, so that the lower ejector pushes the pre-riveting forming needle upward to rivet the contact on the material strip.

Description

Technical Field

[0001] The present application relates to the technical field of contact assembly riveting equipment, and in particular to a riveting device and a riveting method for a riveted contact assembly. Background Art

[0002] Electrical contacts are important components of circuit breakers, switch cabinets, disconnectors, and earthing switches. Their performance directly affects the quality and service life of these electrical appliances. Electrical contacts include moving contacts and stationary contacts. When the moving contacts and stationary contacts are in contact with each other, the circuit is connected. Their relative movement can open or close the circuit, or keep the circuit connected by rotating or sliding.

[0003] In the production and processing of electrical contacts, it is necessary to rivet contacts on metal sheets to form relatively arranged moving contacts and stationary contacts. When current molds are used to rivet contacts on metal sheets, problems such as scraping the contact feet, contact riveting deviation, and insufficient contact riveting area are likely to occur, resulting in high defective product quality and low efficiency in the production of contact assemblies. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a riveting device and a riveting method for a riveted contact assembly, so as to solve the technical problems that the material strip of the existing contact assembly is easy to scrape the contact foot when riveting the contact, the contact is riveted off, the contact riveting area is insufficient, and the contact assembly production has a high number of defective products and low efficiency.

[0005] In order to achieve the above technical purpose, the present application provides a riveting method, which is applied to a riveting device for riveting contacts on a material strip, the riveting device comprising an upper die base, a lower die base, an upper template, a lower template and a vibration plate for placing contacts, the upper template and the lower template are respectively connected between the upper die base and the lower die base through guide pillars, a lower pad is provided between the lower die base and the lower template, the vibration plate is connected to the lower template through a feed guide rail, the lower template is connected to a support pin for supporting the material strip, the material strip is arranged between the upper template and the lower template through the support pin, the contact on the vibration plate is transported to a pre-riveting forming pin provided in the lower template through the feed guide rail, and the first positioning member and the second positioning member in the lower template respectively position the rear side and the left and right sides of the contact;

[0006] After the positioning of the contact is completed, the upper die seat moves downward and synchronously drives the first upper punch rod to move downward, the lower end of the first upper punch rod extends into the upper die plate, and the upper spring acts on the pre-riveting movable pin provided in the upper die plate, so that the lower end of the pre-riveting movable pin extends out of the bottom of the upper die plate and contacts the contact, so that the riveting end of the contact is kept concentric with the riveting hole of the material strip;

[0007] After the riveting end of the contact is concentric with the riveting hole of the material strip, the upper die seat continues to synchronously drive the first upper punch and the second upper punch downward, so that the lower end of the second upper punch passes through the upper template and acts on the upper end of the force transmission rod provided in the lower template, and then the force transmission rod pushes one end of the seesaw mechanism provided in the lower pad, and the other end of the seesaw mechanism drives the lower ejector provided in the lower template, and the upper end of the lower ejector pushes the pre-riveting forming needle upward, and the riveting connection between the contact and the material strip is completed under the relative force of the pre-riveting active needle at the lower end of the first upper punch and the pre-riveting forming needle.

[0008] Furthermore, a pre-rivet seat is provided in the lower template, and the pre-rivet forming needle, the first positioning piece and the second positioning piece are assembled on the pre-rivet seat through a pre-rivet insert, and the feed guide rail extends between the upper template and the lower template and transports the contact to the pre-rivet forming needle. Under the action of the seesaw mechanism, the lower ejector pin pushes the pre-rivet forming needle to rivet the contact into the riveting hole of the feed strip.

[0009] Furthermore, the first positioning member for positioning the rear side of the contact is embedded in the upper end of the pre-riveted insert, and the first positioning member is arranged relative to the discharge end of the feed guide rail, and the forward stroke is limited by the first positioning member when the feed guide rail transports the contact to the pre-riveted forming needle;

[0010] The second positioning members for positioning the left and right sides of the contact include at least two, and the two second positioning members are respectively embedded in the upper end of the pre-riveted insert and located on both sides of the first positioning member. When the feed guide rail transports the contact to the pre-riveted forming needle, the two second positioning members synchronously adjust the left and right positions of the contact under the action of the positioning spring.

[0011] The riveting device for riveting a contact assembly using the riveting method described above comprises an upper die base, a lower die base, an upper template, a lower template and a vibration plate for placing contacts, wherein the upper template and the lower template are respectively connected between the upper die base and the lower die base through guide pillars, a lower pad is provided between the lower die base and the lower template, the vibration plate is connected to the lower template through a material feeding guide rail, the lower template is connected with a support pin for supporting the material strip, a first upper punch rod and a second upper punch rod are vertically arranged and extended to the upper template below the upper die base, a stripping column is embedded in the upper template, the lower end of the first upper punch rod extends into the stripping column, a pre-riveting active pin is provided in the stripping column, and the lower end of the first upper punch rod acts on the upper end of the pre-riveting active pin through an upper spring;

[0012] A pre-riveted seat is embedded in the lower template, and the pre-riveted seat is located below the stripping column. The upper end of the pre-riveted seat is connected to a pre-riveted insert for assembling a first positioning member, a second positioning member and a pre-riveted forming pin. The lower end of the pre-riveted forming pin extends into the pre-riveted seat. A lower ejector pin is arranged in the pre-riveted seat, and the lower end of the pre-riveted forming pin acts on the upper end of the lower ejector pin.

[0013] A seesaw mechanism is provided in the lower pad, and the lower end of the lower ejector extends out of the bottom of the pre-riveted seat and is connected to one end of the seesaw mechanism;

[0014] A force transmission rod is arranged in the lower template, the lower end of the second upper punch penetrates the upper template and acts on the upper end of the force transmission rod, and the lower end of the force transmission rod penetrates the lower template and acts on the other end of the seesaw mechanism.

[0015] Further, the bottom of the upper die seat is connected to an upper pad, and the upper ends of the first upper punch rod and the second upper punch rod are respectively vertically connected to the bottom of the upper pad;

[0016] An upper clamping plate and a stop plate are provided between the upper pad and the upper template, and the lower end of the first upper punch rod and the lower end of the second upper punch rod sequentially penetrate the upper clamping plate and the stop plate and extend to the upper template.

[0017] Furthermore, the pre-riveted insert is embedded in the upper end of the pre-riveted seat, and the first positioning member is embedded in the upper end of the pre-riveted insert and is in a relative relationship with the feed guide rail;

[0018] The second positioning members include at least two, the two second positioning members are respectively embedded in the upper end of the pre-rivet insert and located on both sides of the first positioning member, and the two second positioning members are connected with positioning springs on one side away from the first positioning member.

[0019] Furthermore, there is a gap between the upper template and the lower template, and a stripping insert is provided in the upper template. The stripping insert passes through the upper template, and a stripping punch is embedded in the stripping insert. The upper end of the stripping punch is connected to the upper pad.

[0020] Furthermore, the support pin passes through the lower template, and a support spring corresponding to the support pin is provided in the lower pad and the lower mold base, the lower end of the support pin is connected to the support spring, the upper end of the support pin extends out of the top of the upper template, and the upper end of the support pin has an annular groove around it that is engaged with the edge of the material strip.

[0021] Furthermore, it also includes a lower spring, which is arranged in a spring groove formed by the pre-riveting insert and the pre-riveting seat being connected to each other, the lower end of the pre-riveting forming needle penetrates into the spring groove and forms a rebound connection relationship with the lower spring, and the upper end of the lower ejector pin penetrates into the spring groove and abuts against the lower end of the pre-riveting forming needle.

[0022] Furthermore, the feed end of the feed guide rail is connected to the vibration plate, the discharge end of the feed guide rail is embedded in the top of the lower template and connected to one side of the pre-riveted insert, and the feed trough of the feed guide rail corresponds to the feed port of the pre-riveted insert.

[0023] It can be seen from the above technical scheme that after the contact on the vibration disk of the present application is transported to the pre-riveting forming needle in the lower template through the feed guide rail, the first positioning member limits the position of the contact to continue to slide forward, and then the second positioning member adjusts the position of the left and right sides of the contact to ensure that the contact is located directly above the pre-riveting forming needle; then the upper mold base is controlled to descend to drive the first upper punch rod, and the first upper punch rod acts on the pre-riveting movable needle. At this time, the pre-riveting movable needle descends through the riveting hole of the material strip and contacts the riveting end of the contact, so that the riveting end of the contact forms a riveting hole with the material strip. The concentric relative relationship can effectively prevent the contact feet from being scratched and riveted off-center; finally, the upper die seat will continue to drive the first upper punch and the second upper punch downward, the first upper punch will further act on the pre-riveting active pin, and the second upper punch will pass through the upper template and act on the force transmission rod, so that the force transmission rod pushes the seesaw mechanism and according to the lever principle, pries the lower ejector pin to push the pre-riveting forming pin, thereby completing the riveting relationship between the contact and the material strip through the relative force of the pre-riveting active pin and the pre-riveting forming pin at the lower end of the first upper punch, effectively improving the effect of the contact riveting area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A three-dimensional diagram of a riveting device provided in an embodiment of the present application;

[0026] Figure 2 A top view of a riveting device provided in an embodiment of the present application;

[0027] Figure 3 for Figure 2 Cross-sectional view in the AA direction;

[0028] Figure 4 for Figure 3 Enlarged view at center C;

[0029] Figure 5 for Figure 2 The three-dimensional image after cutting in the BB direction;

[0030] Figure 6 A schematic diagram of the positional relationship between the feed guide rail, the material belt, the stripping column, the pre-riveting seat and the lower die seat after the riveting device provided in the embodiment of the present application is disassembled;

[0031] Figure 7 A schematic diagram of the positional relationship between the pre-riveted insert, the pre-riveted seat and the seesaw mechanism after the riveting device provided in the embodiment of the present application is disassembled;

[0032] Figure 8 A schematic diagram of the positional relationship between the first upper punch, the upper spring, the pre-riveting movable pin, the first positioning rod, the second positioning rod, the positioning spring, the lower ejector pin and the seesaw mechanism after the riveting device provided in the embodiment of the present application is disassembled;

[0033] Fig. 9 A schematic diagram of the positioning of the contacts of the components of the riveting device provided in an embodiment of the present application after disassembly.

[0034] In the figure:

[0035] 01. Material strip; 02. Contact;

[0036] 11. Vibration plate;

[0037] 12. Feeding guide rail;

[0038] 13. Upper die seat;

[0039] 14. Upper pad;

[0040] 15. Put on the splint;

[0041] 16. Stop plate;

[0042] 17, upper template; 17a, stripping column; 17b, pre-riveting movable pin; 17d, stripping insert; 17e, upper spring;

[0043] 18, lower template; 18a, support pin; 18b, pre-riveting forming pin; 18c, first positioning member; 18d, second positioning member; 18e, force transmission rod; 18f, lower ejector pin; 18g, pre-riveting seat; 18h, pre-riveting insert; 18i, positioning spring; 18j, support spring; 18k, lower spring;

[0044] 19, bottom plate; 19a, seesaw mechanism; 19a1, seesaw; 19a2, seesaw base; 19a3, connecting shaft;

[0045] 21. Lower die seat;

[0046] 22. Guide pillar;

[0047] 23a, first upper punch; 23b, second upper punch. DETAILED DESCRIPTION

[0048] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0049] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application 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 operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0050] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0051] See also Figure 1-9As shown, a riveting device for a riveting contact 02 assembly provided in the embodiment of the present application is mainly used for riveting contacts 02 on the moving contact bridge and the static contact bridge of a low-voltage electrical switch. Of course, it can also be used for riveting the contact bridge and the contact 02 of a high-voltage electrical switch according to actual application requirements, and there is no limitation here. The riveting device mainly includes an upper die base 13, a lower die base 21, an upper template 17, a lower template 18 and a vibration plate 11 for placing the contact 02. The upper template 17 and the lower template 18 are respectively connected between the upper die base 13 and the lower die base 21 through guide pillars 22, and a lower pad 19 is provided between the lower die base 21 and the lower template 18. It should be noted that the upper die base 13, the upper template 17, the lower template 18, the lower pad 19 and the lower die base 21 are arranged in sequence from top to bottom, so that they present a stacked arrangement relationship. The guide pillar 22 used in this embodiment is a retractable structure, so that the upper die base 13 can synchronously drive the upper template 17 to descend when it descends.

[0052] The upper die holder 13 of the present embodiment has a first upper punch rod 23a and a second upper punch rod 23b vertically arranged and extending to the upper die plate 17, and the first upper punch rod 23a and the second upper punch rod 23b are arranged parallel to each other. The upper die plate 17 has a vertical through hole, which is arranged corresponding to the first upper punch rod 23a, and a stripping column 17a is embedded in the through hole. The lower end of the first upper punch rod 23a extends into the stripping column 17a, and an upper spring 17e is installed in the stripping column 17a, so that the lower end of the first upper punch rod 23a is connected to the upper spring 17e. The lower template 18 has a vertical through hole, in which a pre-rivet seat 18g is embedded, and the pre-rivet seat 18g is located below the stripping column 17a. The upper end of the pre-rivet seat 18g has an inlay groove, and the inlay groove of the pre-rivet seat 18g can be used to install a pre-rivet insert 18h. The pre-rivet seat 18g and the pre-rivet insert 18h are correspondingly provided with vertical through pinholes, and a pre-rivet forming needle 18b is inserted in the pinhole.

[0053] The vibration plate 11 of this embodiment is roughly spiral-shaped, and a feeding guide rail 12 for feeding the contact 02 is extended from the vibration plate 11, and the feeding guide rail 12 extending from the vibration plate 11 is connected to the lower template 18. Specifically, the feeding guide rail 12 extending from the vibration plate 11 can extend between the upper template 17 and the lower template 18, that is, the upper end of the pre-riveting forming needle 18b that can feed the contact 02 to the lower template 18, and the upper end of the pre-riveting forming needle 18b has a placement portion for placing the contact 02.

[0054] The pre-riveting insert 18h can be used to install the first positioning member 18c, the second positioning member 18d and the pre-riveting forming needle 18b. The first positioning member 18c of this embodiment is used to limit the rear push position of the contact 02 on the pre-riveting forming needle 18b, and the second positioning member 18d is used to adjust and limit the left and right side positions of the contact 02 on the pre-riveting forming needle 18b. In this way, the contact 02 is ensured to be located directly above the pre-riveting forming needle 18b, completing the positioning action of the contact 02.

[0055] The lower template 18 is connected to a support pin 18a for supporting the material strip 01. When the riveting device feeds the material strip 01 between the upper template 17 and the lower template 18, the support pin 18a can support and position the two sides of the material strip 01, thereby ensuring that the material strip 01 can be smoothly fed to the specified position. The upper template 17 is provided with a guide needle for punching holes on the surfaces of both sides of the material strip 01. When the material strip 01 is riveted to the contact head 02, the guide needle can also start a certain stabilizing effect on the material strip 01.

[0056] A pre-riveting movable pin 17b is also provided in the stripping column 17a, and the pre-riveting movable pin 17b is located directly below the first upper punch 23a and the upper spring 17e. In this way, the lower end of the first upper punch 23a can act on the upper end of the pre-riveting movable pin 17b through the upper spring 17e, so that the pre-riveting movable pin 17b has a downward buffering action. The lower end of the pre-riveting movable pin 17b extends out of the bottom of the upper template 17 and contacts the contact 02. When the first upper punch 23a pushes the pre-riveting movable pin 17b, the riveting end of the contact 02 can be kept concentric with the riveting hole of the material strip 01, thereby completing the concentric arrangement relationship between the contact 02 and the material strip 01.

[0057] The upper end of the pre-riveting forming needle 18b extends out of the top of the pre-riveting seat 18g, that is, when the contact 02 is placed on the pre-riveting forming needle 18b, it is located on the pre-riveting insert 18h, and the lower end of the pre-riveting forming needle 18b extends into the pre-riveting seat 18g. Preferably, a lower ejector pin 18f is provided in the pre-riveting seat 18g, and the upper end of the lower ejector pin 18f extends into the pre-riveting seat 18g and abuts against the lower end of the pre-riveting forming needle 18b. In actual application, the upper end of the lower ejector pin 18f will generate an upward thrust on the lower end of the pre-riveting forming needle 18b, and the lower end of the lower ejector pin 18f extends out of the bottom of the pre-riveting seat 18g.

[0058] The upper template 17 also has another vertical through hole, which is arranged corresponding to the second upper punch 23b, and the second upper punch 23b vertically penetrates the through hole and extends out of the bottom of the upper template 17. The lower template 18 also has a through hole, which corresponds to the through hole of the upper template 17. A force transmission rod 18e is installed in the through hole of the lower template 18, so that the lower end of the second upper punch 23b extends out of the bottom of the upper template 17 and acts on the upper end of the force transmission rod 18e, and the lower end of the force transmission rod 18e extends out of the bottom of the lower template 18.

[0059] The lower pad 19 of this embodiment is provided with a through hole, in which a seesaw mechanism 19a is installed. The seesaw mechanism 19a is mainly used to transmit the force exerted by the second upper punch 23b on the pre-riveting forming needle 18b, and the seesaw mechanism 19a is based on the principle of lever. Therefore, the lower end of the lower ejector pin 18f extends out of the bottom of the pre-riveting seat 18g and is connected to one end of the seesaw mechanism 19a, and when the second upper punch 23b moves downward, it will generate a force on one end of the seesaw mechanism 19a through the force transmission rod 18e.

[0060] More specifically, the design requirements for the seesaw mechanism 19a are that the seesaw mechanism 19a mainly includes a seesaw 19a1, a seesaw base 19a2 and a connecting shaft 19a3, the seesaw 19a1 is located above the seesaw base 19a2, and the middle bottom of the seesaw 19a1 is connected to the middle top of the seesaw base 19a2 through the connecting shaft 19a3, so that the seesaw 19a1 and the seesaw base 19a2 form a mutually movable connection relationship. Then the lower end of the lower ejector pin 18f is connected to one end of the seesaw 19a1, and the lower end of the force transmission rod 18e is connected to the other end of the seesaw 19a1, thereby completing the connection relationship between the lower ejector pin 18f, the force transmission rod 18e and the seesaw mechanism 19a.

[0061] The installation requirement for the seesaw mechanism 19a is that a through hole for installing the seesaw mechanism 19a is provided in the lower pad 19 of the present embodiment, and the bottom of the through hole is in contact with the top of the lower die base 21, so that when the seesaw mechanism 19a is completely placed in the through hole, the seesaw base 19a2 can be placed on the top of the lower die base 21. Specifically, the distance between the end of the seesaw 19a1 connected to the force transmission rod 18e and the seesaw base 19a2 is greater than the distance between the end of the seesaw 19a1 connected to the lower ejector pin 18f and the seesaw base 19a2.

[0062] In this way, after the contact 02 on the vibration plate 11 is transported to the pre-riveting forming needle 18b in the lower template 18 through the feed guide rail 12, the first positioning member 18c limits the position of the contact 02 to continue to slide forward, and then the second positioning member 18d adjusts the position of the left and right sides of the contact 02 to ensure that the contact 02 is located directly above the pre-riveting forming needle 18b; then the upper die base 13 is controlled to descend to drive the first upper punch 23a, and the first upper punch 23a acts on the pre-riveting active needle 17b. At this time, the pre-riveting active needle 17b descends through the riveting hole of the material strip 01 and contacts the riveting end of the contact 02, so that the riveting end of the contact 02 forms a concentric relative relationship with the riveting hole of the material strip 01, which can be It can effectively prevent the foot of the contact 02 from being scratched and riveted off; finally, the upper die seat 13 will continue to drive the first upper punch 23a and the second upper punch 23b downward, the first upper punch 23a will further act on the pre-riveting active pin 17b, and the second upper punch 23b will pass through the upper template 17 to act on the force transmission rod 18e, so that the force transmission rod 18e pushes the seesaw mechanism 19a and according to the lever principle, prys the lower ejector pin 18f to push the pre-riveting forming pin 18b, thereby completing the riveting relationship between the contact 02 and the material strip 01 through the relative force of the pre-riveting active pin 17b and the pre-riveting forming pin 18b at the lower end of the first upper punch 23a, and effectively improving the riveting area effect of the contact 02.

[0063] See also Figure 1-3 As shown, according to the above technical scheme, the front end design requirement of the riveting device of the present application is that the feed end of the feed guide rail 12 is connected to the vibration plate 11, and the discharge end of the feed guide rail 12 extends between the upper template 17 and the lower template 18 and then is embedded in the top of the lower template 18, and then the discharge end of the feed guide rail 12 continues to extend forward and ends at one side connected to the pre-riveted insert 18h. A feed trough is provided on the feed guide rail 12, and the feed trough is arranged from the feed end connected to the vibration plate 11 to the discharge end connected to the side of the pre-riveted insert 18h. The pre-riveted insert 18h has an inlet, so the feed trough of the feed guide rail 12 corresponds to the inlet of the pre-riveted insert 18h. In actual application, the contact 02 is vibrated by the vibration plate 11 into the feed trough of the feed guide rail 12, and under the action of compressed air, the contact 02 is transported along the feed trough to the upper end of the pre-riveted forming needle 18b of the pre-riveted insert 18h with a certain curvature. In this way, the purpose of conveying the contact 02 to the pre-riveting forming needle 18 b and riveting it with the material strip 01 is achieved through the optimized arrangement of the material conveying guide rail 12 .

[0064] The bottom of the upper die holder 13 of the present embodiment is connected with an upper pad 14, and the upper ends of the first upper punch rod 23a and the second upper punch rod 23b are respectively vertically fixedly connected to the bottom of the upper pad 14, and when the upper die holder 13 moves downward, the upper pad 14 is synchronously driven, and the upper pad 14 drives the first upper punch rod 23a and the second upper punch rod 23b to move downward, preferably, the length of the second upper punch rod 23b is longer than the length of the first upper punch rod 23a. Preferably, an upper clamping plate 15 and a stop plate 16 are further provided between the upper clamping plate 14 and the upper template 17, that is, the bottom of the upper clamping plate 14 is connected to the top of the upper clamping plate 15, and the stop plate 16 is located below the upper clamping plate 15. Therefore, the overall structure of the riveting device is sequentially arranged from top to bottom with an upper die base 13, an upper pad 14, an upper clamping plate 15, a stop plate 16, an upper template 17, a lower template 18, a lower pad 19 and a lower die base 21, and each layer of the plates is arranged in a stacked relationship, wherein a gap is left between the upper clamping plate 15 and the stop plate 16, and a gap is also left between the upper templates 17 and the upper templates 17.

[0065] When the upper die seat 13 drives the first upper punch 23a and the second upper punch 23b to move downward, the lower end of the first upper punch 23a and the lower end of the second upper punch 23b will successively penetrate the upper clamping plate 15 and the stop plate 16 and extend to the upper template 17, wherein the second upper punch 23b will continue to descend and penetrate the upper template 17 and extend to the lower template 18. Through the assembly relationship between the first upper punch 23a and the second upper punch 23b and the upper die seat 13, the upper pad 14, the upper clamping plate 15, the stop plate 16, the upper template 17 and the lower template 18, the first upper punch 23a and the second upper punch 23b can effectively achieve the riveting action effect of the contact 02 and the material strip 01.

[0066] See also Figure 6-9As shown, the middle of the upper end of the pre-riveted seat 18g of this embodiment has a downwardly recessed mounting groove, and the pre-riveted insert 18h can be embedded in the mounting groove of the upper end of the pre-riveted seat 18g to complete the assembly relationship between the pre-riveted insert 18h and the pre-riveted seat 18g. The upper end of the pre-riveted insert 18h has a mounting groove that is roughly in the shape of a "cross", and the first positioning member 18c used to limit the rear side of the contact 02 is embedded in the mounting groove of the upper end of the pre-riveted insert 18h. Specifically, the first positioning member 18c is assembled in the mounting groove of the upper end of the pre-riveted insert 18h that is in a relative relationship with the feed guide rail 12. Preferably, in this embodiment, one end face of the first positioning member 18c facing the contact 02 is set as an arc surface, and the arc surface is roughly in the longitudinal direction of the end face of the first positioning member 18c. The bottom of the first positioning member 18c has a guide rail seat corresponding to the feeding guide rail 12, so that the upper end of the pre-riveting forming needle 18b will penetrate the guide rail seat of the first positioning member 18c, so that the upper end of the pre-riveting forming needle 18b extends above the guide rail seat, and the arc surface of the first positioning member 18c is located on one side of the upper end of the pre-riveting forming needle 18b. When the contact 02 is conveyed, the arc surface of the first positioning member 18c can directly limit the advancement position of the contact 02, and make the contact 02 stay at the upper end of the pre-riveting forming needle 18b.

[0067] In this embodiment, the second positioning members 18d include at least two, and the two second positioning members 18d are respectively embedded in another mounting groove at the upper end of the pre-riveted insert 18h, and the second positioning members 18d are respectively located on both sides of the first positioning member 18c, or in other words, the second positioning members 18d are respectively located on both sides of the first positioning member 18c. In order to achieve the purpose of adjusting the left and right positions of the contact 02 by the two second positioning members 18d, positioning springs 18j are connected to the sides of the two second positioning members away from the first positioning member 18c. Under the elastic action of the positioning springs 18j, the two second positioning members are pushed in opposite directions to adjust the left and right positions of the contact 02 delivered to the pre-riveted forming needle 18b.

[0068] See also Figure 1 , Figure 5As shown, there is a gap between the upper template 17 and the lower template 18 of this embodiment. In actual application, the riveting device conveys the material strip 01 to the gap formed by the upper template 17 and the lower template 18. A plurality of stripping inserts 17b are provided in the upper template 17 for stripping the finished product of the contact 02 riveted in the material strip 01. The stripping insert 17b penetrates the upper template 17, and a stripping punch is embedded in the stripping insert 17b. The upper end of the stripping punch is fixedly connected to the bottom of the upper pad 14. In this way, the lower end of the stripping punch vertically penetrates the upper pad 14, the upper clamping plate 15, the stop plate 16 and the upper template 17 downward, and the stripping punch and the stripping insert 17b are in a movable arrangement relationship. The upper die seat 13 moves downward and drives the stripping punch through the upper pad 14 at the same time. The finished product on the material strip 01 can be directly impacted and demolded by the lower end of the stripping punch, making the demolding process of this application simple and convenient.

[0069] See also Figure 5 As shown, the support pin 18a of this embodiment is assembled in the lower template 18, and the support pin 18a passes through the lower template 18, the upper end of the support pin 18a extends out of the top of the lower template 18, and the lower end of the support pin 18a extends out of the bottom of the lower template 18. Preferably, a support spring corresponding to the support pin 18a is provided in the lower pad 19 and the lower mold base 21, that is, the lower end of the support pin 18a is connected to the support spring, and the upper end of the support pin 18a extending out of the top of the upper template 17 has an annular groove around the edge of the material strip 01. In actual application, when the material strip 01 is conveyed to the gap between the upper template 17 and the lower template 18, the support pins 18a of this embodiment can be arranged in two rows, and the two rows of support pins 18a are respectively engaged with the two sides of the conveyed material strip 01, so as to stabilize and limit the position of the material strip 01 between the upper template 17 and the lower template 18. In addition, under the action of the support spring, the height of the support pin 18a in the vertical direction can be appropriately adjusted, that is, the height of the material strip 01 in the vertical direction is adjusted through the mutual support and interaction between the support pin 18a and the support spring, or the distance between the material strip 01 and the upper template 17 or the lower template 18 is adjusted.

[0070] See also Figure 8-9As shown, the pre-riveting insert 18h and the pre-riveting seat 18g of this embodiment cooperate with each other to form a spring groove, and the lower end of the pre-riveting forming needle 18b penetrates into the spring groove, and a lower spring 18k is installed in the spring groove, so the lower end of the pre-riveting forming needle 18b penetrates the lower spring 18k, and the lower end of the pre-riveting forming needle 18b has a raised round head. When the pre-riveting forming needle 18b moves upward, the raised round head can compress the lower spring 18k, or due to the elastic effect of the lower spring 18k, the pre-riveting forming needle 18b and the lower spring 18k form a rebound connection relationship. In actual application, when the seesaw base 19a2 acts on the lower ejector pin 18f, the upper end of the lower ejector pin 18f penetrates into the spring groove and abuts against the lower end of the pre-riveting forming needle 18b. The pre-riveting forming needle 18b compresses the lower spring 18k, so that the upper end of the pre-riveting forming needle 18b pushes the contact 02 to be riveted into the riveting hole of the material strip 01, thereby completing the riveting relationship between the contact 02 and the material strip 01.

[0071] In an embodiment of the present application, a riveting method using a riveting device is provided. The contact 02 can be riveted to the material strip 01 by the riveting method of the present application. The specific riveting method is as follows:

[0072] Step S1, the material strip 01 is in place and the contact 02 is positioned, the vibration plate 11 is connected to the lower template 18 through the feed guide rail 12, the lower template 18 is connected with a support pin 18a for supporting the material strip 01, the material strip 01 is arranged between the upper template 17 and the lower template 18 through the support pin 18a, and the lower template 18 is equipped with a pre-riveting forming needle 18b, a first positioning member 18c and a second positioning member 18d through a pre-riveting seat 18g and a pre-riveting insert 18h; the feed guide rail 12 extends between the upper template 17 and the lower template 18, and the contact 02 on the vibration plate 11 The contact 02 is transported to the upper end of the pre-riveting forming needle 18b by the feeding guide 12. When the feeding guide 12 transports the contact 02 to the pre-riveting forming needle 18b, the forward stroke is limited by the first positioning member 18c; the second positioning member 18d includes at least two, and the two second positioning members are respectively embedded in the upper end of the pre-riveting insert 18h and located on both sides of the first positioning member 18c. When the feeding guide 12 transports the contact 02 to the pre-riveting forming needle 18b, the two second positioning members synchronously adjust the left and right positions of the contact 02 under the action of the positioning spring 18j;

[0073] Step S2, the riveted end of the contact 02 is arranged concentrically with the riveting hole of the material strip 01, and the upper template 17 is equipped with a pre-riveted movable pin 17b through the stripping column 17a. After completing the positioning of the contact 02, when the upper die seat 13 moves downward, it synchronously drives the first upper punch 23a and the second upper punch 23b to move downward through the upper pad 14, and the lower end of the first upper punch 23a passes through the upper clamping plate 15 and the stop plate 16 and then extends into the upper template 17, and the lower end of the first upper punch 23a acts on the upper end of the pre-riveted movable pin 17b through the upper spring 17e, so that the lower end of the pre-riveted movable pin 17b extends out of the bottom of the upper template 17 and passes through the riveting hole of the material strip 01 to contact the contact 02, so that the riveted end of the contact 02 is kept concentric with the riveting hole of the material strip 01;

[0074] Step S3, the riveted end of the contact 02 is riveted and connected to the material strip 01. After the riveted end of the contact 02 is concentric with the riveted hole of the material strip 01, the upper die seat 13 continues to synchronously drive the first upper punch 23a and the second upper punch 23b to move downward, so that the lower end of the second upper punch 23b passes through the upper template 17 and acts on the upper end of the force transmission rod 18e provided in the lower template 18, and then the force transmission rod 18e pushes the seesaw 19a1 of the seesaw mechanism 19a provided in the lower pad 19. At one end, the other end of the seesaw 19a1 of the seesaw mechanism 19a drives the lower ejector 18f provided in the lower template 18, and then the upper end of the lower ejector 18f pushes the pre-riveting forming needle 18b to move upward, and the upper end of the pre-riveting forming needle 18b pushes the riveted end of the contact 02 to be riveted in the riveting hole of the material strip 01. In this way, the riveting connection between the contact 02 and the material strip 01 is completed under the relative force of the pre-riveting active needle 17b at the lower end of the first upper punch 23a and the pre-riveting forming needle 18b.

[0075] In this way, after the contact 02 on the vibration plate 11 is transported to the pre-riveting forming needle 18b in the lower template 18 through the feed guide rail 12, the first positioning member 18c limits the position of the contact 02 to continue to slide forward, and then the second positioning member 18d adjusts the position of the left and right sides of the contact 02 to ensure that the contact 02 is located directly above the pre-riveting forming needle 18b; then the upper die base 13 is controlled to descend to drive the first upper punch 23a, and the first upper punch 23a acts on the pre-riveting active needle 17b. At this time, the pre-riveting active needle 17b descends through the riveting hole of the material strip 01 and contacts the riveting end of the contact 02, so that the riveting end of the contact 02 forms a concentric relative relationship with the riveting hole of the material strip 01, which can be It can effectively prevent the foot of the contact 02 from being scratched and riveted off; finally, the upper die seat 13 will continue to drive the first upper punch 23a and the second upper punch 23b downward, the first upper punch 23a will further act on the pre-riveting active pin 17b, and the second upper punch 23b will pass through the upper template 17 to act on the force transmission rod 18e, so that the force transmission rod 18e pushes the seesaw mechanism 19a and according to the lever principle, prys the lower ejector pin 18f to push the pre-riveting forming pin 18b, thereby completing the riveting relationship between the contact 02 and the material strip 01 through the relative force of the pre-riveting active pin 17b and the pre-riveting forming pin 18b at the lower end of the first upper punch 23a, and effectively improving the riveting area effect of the contact 02.

[0076] The above is a detailed introduction to a riveting device and a riveting method for a riveted contact assembly provided in the present application. For a person skilled in the art, according to the idea of ​​the embodiments of the present application, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A riveting method, the riveting method is applied to a riveting device for riveting contacts on a material strip, the riveting device comprises an upper die base, a lower die base, an upper template, a lower template and a vibration plate for placing contacts, the upper template and the lower template are respectively connected between the upper die base and the lower die base through guide pillars, a lower pad is provided between the lower die base and the lower template, the vibration plate is connected to the lower template through a feed guide rail, the lower template is connected to a support pin for supporting the material strip, the material strip is arranged between the upper template and the lower template through the support pin, and is characterized in that The contact on the vibration plate is transported to the pre-riveting forming needle arranged in the lower template through the feeding guide rail, and the first positioning member and the second positioning member in the lower template respectively position the rear side and the left and right sides of the contact, so that the contact is located directly above the pre-riveting forming needle; After the positioning of the contact is completed, the upper die seat moves downward and synchronously drives the first upper punch rod and the second upper punch rod to move downward, the lower end of the first upper punch rod extends into the upper die plate, and the upper spring acts on the pre-riveting movable pin provided in the upper die plate, so that the lower end of the pre-riveting movable pin extends out of the bottom of the upper die plate and contacts the contact, so that the riveted end of the contact is kept concentric with the riveting hole of the material strip; After the riveting end of the contact is concentric with the riveting hole of the material strip, the upper die seat continues to synchronously drive the first upper punch and the second upper punch downward, so that the lower end of the second upper punch passes through the upper template and acts on the upper end of the force transmission rod provided in the lower template, and then the force transmission rod pushes one end of the seesaw mechanism provided in the lower pad, and the other end of the seesaw mechanism drives the lower ejector provided in the lower template, and the upper end of the lower ejector pushes the pre-riveting forming needle upward, and the riveting connection between the contact and the material strip is completed under the relative force of the pre-riveting active needle at the lower end of the first upper punch and the pre-riveting forming needle.

2. The riveting method according to claim 1, characterized in that: A pre-riveting seat is provided in the lower template, and the pre-riveting forming needle, the first positioning piece and the second positioning piece are assembled on the pre-riveting seat through a pre-riveting insert. The feed guide rail extends between the upper template and the lower template and transports the contact to the pre-riveting forming needle. Under the action of the seesaw mechanism, the lower ejector pin pushes the pre-riveting forming needle to rivet the contact into the riveting hole of the feed strip.

3. The riveting method according to claim 2, characterized in that: The first positioning member for positioning the rear side of the contact is embedded in the upper end of the pre-riveting insert, and the first positioning member is arranged relative to the discharge end of the feed guide rail, and the forward stroke is limited by the first positioning member when the feed guide rail transports the contact to the pre-riveting forming needle; The second positioning members for positioning the left and right sides of the contact include at least two, and the two second positioning members are respectively embedded in the upper end of the pre-riveted insert and located on both sides of the first positioning member. When the feed guide rail transports the contact to the pre-riveted forming needle, the two second positioning members synchronously adjust the left and right positions of the contact under the action of the positioning spring.

4. A riveting device for riveting a contact assembly using the riveting method according to any one of claims 1 to 3, comprising an upper die base, a lower die base, an upper template, a lower template and a vibration plate for placing contacts, wherein the upper template and the lower template are respectively connected between the upper die base and the lower die base through guide pillars, a lower pad is provided between the lower die base and the lower template, the vibration plate is connected to the lower template through a feed guide rail, and the lower template is connected to a support pin for supporting the material strip, characterized in that: The upper die seat has a first upper punch rod and a second upper punch rod vertically arranged and extending to the upper die plate, a stripping column is embedded in the upper die plate, the lower end of the first upper punch rod extends into the stripping column, a pre-riveting movable pin is arranged in the stripping column, and the lower end of the first upper punch rod acts on the upper end of the pre-riveting movable pin through an upper spring; A pre-riveted seat is embedded in the lower template, and the pre-riveted seat is located below the stripping column. The upper end of the pre-riveted seat is connected to a pre-riveted insert for assembling a first positioning member, a second positioning member and a pre-riveted forming pin. The lower end of the pre-riveted forming pin extends into the pre-riveted seat. A lower ejector pin is arranged in the pre-riveted seat, and the lower end of the pre-riveted forming pin acts on the upper end of the lower ejector pin. A seesaw mechanism is provided in the lower pad, and the lower end of the lower ejector extends out of the bottom of the pre-riveted seat and is connected to one end of the seesaw mechanism; A force transmission rod is arranged in the lower template, the lower end of the second upper punch penetrates the upper template and acts on the upper end of the force transmission rod, and the lower end of the force transmission rod penetrates the lower template and acts on the other end of the seesaw mechanism.

5. The riveting device according to claim 4, characterized in that: The bottom of the upper die seat is connected with an upper pad, and the upper ends of the first upper punch rod and the second upper punch rod are respectively vertically connected to the bottom of the upper pad; An upper clamping plate and a stop plate are provided between the upper pad and the upper template, and the lower end of the first upper punch rod and the lower end of the second upper punch rod sequentially penetrate the upper clamping plate and the stop plate and extend to the upper template.

6. The riveting device according to claim 4, characterized in that: The pre-riveted insert is embedded in the upper end of the pre-riveted seat, and the first positioning member is embedded in the upper end of the pre-riveted insert and is in a relative relationship with the feed guide rail; The second positioning members include at least two, the two second positioning members are respectively embedded in the upper end of the pre-rivet insert and located on both sides of the first positioning member, and the two second positioning members are connected with positioning springs on one side away from the first positioning member.

7. The riveting device according to claim 5, characterized in that: There is a gap between the upper template and the lower template. A stripping insert is provided in the upper template. The stripping insert passes through the upper template. A stripping punch is embedded in the stripping insert. The upper end of the stripping punch is connected to the upper pad.

8. The riveting device according to claim 4, characterized in that: The support pin passes through the lower template, and a support spring corresponding to the support pin is provided in the lower pad and the lower mold base, the lower end of the support pin is connected to the support spring, and the upper end of the support pin extends out of the top of the upper template, and the upper end of the support pin has an annular groove around it that is embedded with the edge of the material strip.

9. The riveting device according to claim 4, characterized in that: It also includes a lower spring, which is arranged in a spring groove formed by the pre-riveting insert and the pre-riveting seat being connected to each other, the lower end of the pre-riveting forming needle penetrates into the spring groove and forms a rebound connection relationship with the lower spring, and the upper end of the lower ejector pin penetrates into the spring groove and abuts against the lower end of the pre-riveting forming needle.

10. The riveting device according to claim 4, characterized in that: The feed end of the feed guide rail is connected to the vibration plate, the discharge end of the feed guide rail is embedded in the top of the lower template and connected to one side of the pre-riveted insert, and the feed trough of the feed guide rail corresponds to the feed inlet of the pre-riveted insert.

Images