An assembly and riveting fixture and its usage method

Abstract

This invention relates to an assembly and riveting fixture and its method of use, mainly comprising: a pre-fastening structure, a positioning structure, and a riveting structure. The pre-fastening structure is used to fix the workpiece, the positioning structure is used to position the workpiece, and the riveting structure is used for the riveting process of the workpiece rivets. The combined use of the pre-fastening structure and the positioning structure can clamp and position the workpiece, while also serving as a positioning element during assembly, facilitating the assembly of complex internal structures within the workpiece. The positioning structure and the riveting structure use the same positioning datum and are interchangeable. By removing the positioning structure and then inserting the riveting structure, the riveting operation of the workpiece rivets can be performed, completing the overall assembly task of the workpiece.

Description

Technical Field

[0001] This invention relates to a riveting fixture and riveting method that simultaneously has equipment positioning and riveting functions, facilitating the assembly of toggle switch products. Background Technology

[0002] In mechanical and electronic manufacturing, toggle switches are commonly used to securely connect their upper and lower housings using riveting. Due to the complex internal structure of the switch, containing numerous springs, spring plates, and handles, external force is required to pre-tighten the switch before riveting the upper and lower housings together during assembly. Furthermore, the assembly positioning holes also serve as riveting holes, increasing the difficulty of controlling the product's assembly precision.

[0003] The existing solution is usually to clamp the toggle switch after assembly using C-clamps or similar tools, and then rivet it together. However, this can easily lead to slight misalignment or rotation between the upper and lower housings during riveting, resulting in internal structural misalignment or failure.

[0004] Therefore, it is necessary to design a fixture that can be assembled and pre-fastened as well as easily riveted to ensure product quality. Summary of the Invention

[0005] The purpose of this invention is to provide an assembly and riveting fixture that can be assembled and pre-fastened as well as easily riveted.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An assembly riveting fixture, comprising a pre-fastening structure, a positioning structure, and a riveting structure, characterized in that: the pre-fastening structure includes a base plate, a base is provided in the middle of the base plate, supports are provided on the left and right sides of the base, a rocker plate is provided above the base, the two ends of the rocker plate are mounted on the side supports, the base is provided with a plurality of vertically arranged through holes, the rocker plate is provided with an arc-shaped groove at the position corresponding to the through holes, and U-shaped grooves are also provided on the front and rear edges of the base plate; the positioning structure includes a positioning plate, the positioning plate is provided with a plurality of positioning rods that cooperate with the through holes of the base; the riveting structure includes a riveting base plate, the riveting base plate is provided with a plurality of top rods that cooperate with the through holes of the base, and the riveting base plate is provided with live bolts that cooperate with the U-shaped grooves on both sides, and knurled nuts are provided on the live bolts.

[0007] The workpiece switch is equipped with rivet holes, and the number of rivet holes matches the number of base through holes, top rods, and positioning rods.

[0008] Furthermore, one side of the pre-fastening structure includes bolts fixed to both sides of the base, and cylindrical nuts fixed to the bolts. The top of the cylindrical nuts is provided with a radial groove. The other side of the pre-fastening structure is provided with a screw rod, and a rotating screw is provided on the screw rod. One end of the rocker plate is mounted on the radial groove on the top of the cylindrical nut and fixed by a pin, and the other end is mounted on the rotating screw and fixed by a nut.

[0009] Furthermore, the positioning structure is inserted into the pre-fastening structure, and multiple positioning rods of the positioning structure extend out of the through holes of the pre-fastening structure base.

[0010] Furthermore, the workpiece switch has four rivet holes, and the positioning structure has four positioning rods. After the four positioning rods of the positioning structure pass through the corresponding through holes of the pre-tightening structure base, they are inserted into the rivet mounting holes in the workpiece switch for positioning.

[0011] Furthermore, the riveting structure is equipped with four push rods. The riveting structure is inserted into the pre-tightening structure, so that the four push rods of the riveting structure pass through the corresponding through holes of the pre-tightening structure base and the rivet mounting holes in the workpiece switch. The hinge bolt passes through the U-shaped groove on the edge of the pre-tightening structure base plate and is fastened with a knurled nut.

[0012] Furthermore, the method of using the assembly and riveting fixture of the present invention includes the following steps:

[0013] A. Insert the positioning structure into the pre-fastening structure, and make the multiple positioning rods of the positioning structure extend out of the through holes of the pre-fastening structure base;

[0014] B. Loosen the nut, turn the screw outward, turn the rocker outward, and clear the central working area;

[0015] C. Install the workpiece switch and position it using the positioning rod;

[0016] D. Flip the rocker plate and turn the screw so that the rocker plate is on the workpiece switch, and the upper part of the workpiece switch extends out from the opening in the middle of the rocker plate. Tighten the nut to lock the workpiece switch.

[0017] E. Pull-out positioning structure;

[0018] F. Install the anchor bolts;

[0019] G. Insert the riveting structure into the pre-fastening structure, so that multiple top rods of the riveting structure protrude from the through holes of the pre-fastening structure base, and the hinge bolts pass through the U-shaped grooves on the edge of the pre-fastening structure base plate and are fastened with knurled nuts.

[0020] H. Use a rivet head to rivet the rivets;

[0021] I. Structure for pull-out riveting;

[0022] J. Loosen the nut, turn the swivel screw outward, turn the rocker outward, and clear the central working area;

[0023] K. Remove the assembled workpiece switch.

[0024] The pre-fastening structure is used to fix the workpiece, the positioning structure is used to position the workpiece, and the riveting structure is used for the riveting process of the workpiece rivets. The combined use of the pre-fastening structure and the positioning structure can clamp and position the workpiece, while also serving as a positioning element during assembly. This facilitates the assembly of complex internal structures within the workpiece, ensures consistency in switch assembly, and prevents misalignment between the upper and lower housings and internal structures. The positioning structure and the riveting structure use the same positioning reference and are interchangeable. By removing the positioning structure and inserting the riveting structure, the workpiece rivets can be riveted, completing the overall assembly of the workpiece. The combination of the pre-fastening structure and the positioning structure enables rapid riveting and stable product quality. This paired operation mode can be applied to assembly line operations, improving assembly efficiency.

[0025] Advantages of this invention:

[0026] 1. Solve the problem of switch assembly and positioning.

[0027] 2. Solve the problem of fastening the switch assembly to avoid product misalignment.

[0028] 3. High precision, facilitating quality control.

[0029] 4. Easy to operate and highly applicable.

[0030] 5. It can be used for the construction of production lines. By increasing the number of workstations and fixtures and arranging the rhythm, assembly line operations can be realized, thereby increasing production capacity. Attached Figure Description

[0031] Figure 1 This is a perspective view of the pre-fastening structure of the present invention.

[0032] Figure 2 This is a three-dimensional view of the positioning structure of the present invention.

[0033] Figure 3 This is a perspective view of the pre-tightened state of the workpiece switch assembly according to the present invention.

[0034] Figure 4 This is a schematic diagram of the rocker's flipping motion.

[0035] Figure 5 This is a three-dimensional view of the riveting structure of the present invention.

[0036] Figure 6 This is a perspective view of the riveting assembly of the present invention.

[0037] Figure 7 This is a front view of the pre-fastened structure.

[0038] Figure 8 This is a side view of the pre-fastened structure.

[0039] Figure 9 This is a top view of the pre-fastened structure.

[0040] Figure 10 This is a front view of the positioning structure.

[0041] Figure 11 This is a top view of the positioning structure.

[0042] Figure 12 for Figure 3 The front view.

[0043] Figure 13 for Figure 12 BB cross-section.

[0044] Figure 14 for Figure 3 Top view.

[0045] Figure 15 This is a front cross-sectional view of the structure used for riveting.

[0046] Figure 16 This is a top view of the structure used for riveting.

[0047] Figure 17 This is a front view of the riveted assembly.

[0048] Figure 18 for Figure 17 AA cross-section view.

[0049] Figure 19 for Figure 17 Top view.

[0050] Figure 20 This is a schematic diagram of a rivet head.

[0051] In the diagram: 1. Base, 2. Socket head screw, 3. Bolt, 4. Socket nut, 5. Shaft pin, 6. Rocker plate, 7. Nut, 8. Rotary screw, 9. Screw, 10. Positioning plate, 11. Positioning rod, 12. Workpiece switch, 13. Hinged bolt, 14. Knurled nut, 15. Top rod, 16. Riveting base plate, 17. Washer plate, 18. Socket head screw, 19. Rivet. Detailed Implementation

[0052] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0053] An assembly and riveting fixture includes a pre-fastening structure, a positioning structure, and a riveting structure.

[0054] like Figure 1 , Figure 2 and Figure 4 As shown, the pre-fastening structure includes a base plate, a base 1 in the middle of the base plate, supports on the left and right sides of the base 1, a rocker plate 6 above the base 1, and the two ends of the rocker plate 6 are mounted on the supports on both sides. The base 1 has multiple vertically arranged through holes, and the rocker plate 6 has an arc-shaped groove at the position corresponding to the through holes. The front and rear edges of the base plate also have U-shaped grooves. The positioning structure includes a positioning plate 10, and the positioning plate 10 has multiple positioning rods 11 that cooperate with the through holes of the base. The riveting structure includes a riveting base plate 16, and the riveting base plate 16 has multiple top rods 15 that cooperate with the through holes of the base. The riveting base plate 16 has union bolts 13 on both sides that cooperate with the U-shaped grooves, and the union bolts 13 have knurled nuts 14.

[0055] Specifically, such as Figure 1 As shown, one side of the pre-tightening structure includes bolts 3 fixed to both sides of the base 1, and cylindrical nuts 4 fixed to the bolts 3. The top of the cylindrical nuts 4 is provided with a radial groove. The other side of the pre-tightening structure is provided with a screw 9, and a rotating screw 8 is provided on the screw 9. One end of the rocker plate 6 is mounted on the radial groove on the top of the cylindrical nuts 4 and fixed by a shaft pin 5, and the other end is mounted on the rotating screw 8 and fixed by a nut 7.

[0056] like Figure 3 and Figure 4 As shown, when the workpiece switch 12 needs to be installed, the positioning structure is inserted into the pre-fastening structure, causing multiple positioning rods 11 of the positioning structure to extend out of the through holes of the pre-fastening structure base. The workpiece switch 12 contains four rivet mounting holes, and the positioning rods 11 pass through the rivet mounting holes in the workpiece switch 12 for positioning. The positioning rods 11 have a stepped shaft structure; the lower shaft diameter matches the through hole of the pre-fastening structure base, the middle shaft diameter matches the lower recess of the workpiece switch 12, and the upper shaft diameter matches the rivet mounting holes of the workpiece switch 12.

[0057] like Figure 6 As shown, the riveting structure is inserted into the pre-tightening structure, so that multiple push rods 15 of the riveting structure extend out of the through holes of the pre-tightening structure base. The hinge bolt 13 passes through the U-shaped groove on the edge of the pre-tightening structure base plate and is tightened by the knurled nut 14.

[0058] The pre-fastening structure is used to fix the workpiece, clamping it to prevent misalignment of the upper and lower rivet holes during riveting. It can also be used for pre-riveting inspection of workpieces (such as switches). By flipping the switch, the internal contact can be determined by touch and sound, indicating whether there is any misalignment. This avoids rework caused by subsequent workpiece defects.

[0059] The positioning structure is used to position the workpiece, and when used in conjunction with the pre-fastening structure, it facilitates the assembly of internal components such as spring plates, springs, and handles within the workpiece.

[0060] The riveting structure is used for riveting workpieces. When used in conjunction with the pre-fastening structure, it can fix the rivets and flexibly select riveting methods such as manual, pneumatic, hydraulic, rotary, and radial riveting to complete the workpiece assembly operation.

[0061] The usage method includes the following steps:

[0062] A. Insert the positioning structure into the pre-fastening structure, and make the multiple positioning rods 11 of the positioning structure extend out of the through holes of the pre-fastening structure base;

[0063] B. Loosen nut 7, turn screw 8 outward, turn plate 6 outward to clear the central working area, such as Figure 4 As shown;

[0064] C. Install the workpiece switch 12 and position it using the positioning rod 11. Insert the positioning rod 11 into the rivet hole of the workpiece switch 12.

[0065] D. Flip the rocker plate 6 and the rotary screw 8 so that the rocker plate 6 is positioned on the workpiece switch 12. The upper part of the workpiece switch 12 extends out from the opening in the middle of the rocker plate 6. Tighten the nut 7 to lock the workpiece switch 12.

[0066] E. Pull-out positioning structure;

[0067] F. Install the anchor pin. The rivet is installed into the rivet hole of the workpiece switch 12. After the riveting structure and the pre-fixed structure are matched, the multiple push rods 15 can press the rivet.

[0068] G. Insert the riveting structure into the pre-tightening structure, so that the multiple push rods 15 of the riveting structure protrude from the through holes of the pre-tightening structure base, and the hinge bolts 13 pass through the U-shaped grooves on the edge of the pre-tightening structure base plate and are tightened using the knurled nuts 14.

[0069] H. Using a rivet head, rivet 19 is riveted. The rocker plate has an arc-shaped groove, which perfectly creates space for riveting. Figure 20 The rivet head is used to rivet the rivet.

[0070] I. Structure for pull-out riveting;

[0071] J. Loosen the nut 7, turn the slewing screw 8 outward, and turn the rocker 6 outward to clear the central working area.

[0072] K. Remove the assembled workpiece switch 12.

[0073] This invention relates to a method of using a riveting fixture, defining a "plug-in" and "pull-out" assembly method for workpieces. "Plug-in" includes the combination of the pre-fastening structure and the positioning structure, primarily used for internal assembly of the workpiece; it also includes the combination of the pre-fastening structure and the riveting structure, primarily used for riveting rivets. "Pull-out" includes the separation of the pre-fastening structure and the positioning structure; it also includes the separation of the pre-fastening structure and the riveting structure. This invention is applicable to the construction of production lines; by increasing the number of workstations and fixtures, assembly line operations can be achieved. This invention is applicable to diverse workpiece fastening methods; after "pulling out" the positioning structure, the workpiece can be fastened using bolts and nuts, blind rivets, etc.

Claims

1. An assembly and riveting fixture, comprising a pre-fastening structure, a positioning structure, and a riveting structure, characterized in that: The pre-fastening structure includes a base plate with a base in the middle and supports on both sides. A rocker plate is mounted above the base, with its ends resting on the supports. The base has multiple vertically arranged through holes, and the rocker plate has arc-shaped grooves corresponding to the through holes. U-shaped grooves are also provided on the front and rear edges of the base plate. The positioning structure includes a positioning plate with multiple positioning rods that mate with the through holes in the base. The riveting structure includes a riveting base plate with multiple push rods that mate with the through holes in the base. The riveting base plate has union bolts on both sides that mate with the U-shaped grooves, and knurled nuts on the union bolts. The workpiece switch has rivet holes, the number of which corresponds to the number of through holes in the base, push rods, and positioning rods. The number of positioning rods is matched. One side bracket of the pre-fastening structure includes bolts fixed to both sides of the base, and cylindrical nuts fixed to the bolts. The top of the cylindrical nuts has a radial groove. The other side bracket of the pre-fastening structure is equipped with a screw rod with a rotating screw. One end of the rocker plate is mounted on the radial groove on the top of the cylindrical nut and fixed by a pin. The other end is mounted on the rotating screw and fixed by a nut. This allows multiple positioning rods of the positioning structure to extend out of the through holes of the pre-fastening structure base. The workpiece switch has 4 rivet holes, and the positioning structure has 4 positioning rods. After the 4 positioning rods of the positioning structure pass through the corresponding through holes of the pre-fastening structure base, they are inserted into the rivet mounting holes in the workpiece switch for positioning.

2. The assembly and riveting fixture as described in claim 1, characterized in that, The riveting structure has four push rods. The riveting structure is inserted into the pre-tightening structure, so that the four push rods of the riveting structure pass through the corresponding through holes of the pre-tightening structure base and the rivet mounting holes in the workpiece switch. The hinge bolt passes through the U-shaped groove on the edge of the pre-tightening structure base plate and is fastened with a knurled nut.

3. The method of using the assembly and riveting fixture as described in claim 1, characterized in that, The method of using assembly and riveting fixtures includes the following steps: A. Insert the positioning structure into the pre-fastening structure, and make the multiple positioning rods of the positioning structure extend out of the through holes of the pre-fastening structure base; B. Loosen the nut, turn the screw outward, turn the rocker outward, and clear the central working area; C. Install the workpiece switch and position it using the positioning rod; D. Flip the rocker plate and turn the screw so that the rocker plate is on the workpiece switch, and the upper part of the workpiece switch extends out from the opening in the middle of the rocker plate. Tighten the nut to lock the workpiece switch. E. Pull-out positioning structure; F. Install the anchor bolts; G. Insert the riveting structure into the pre-fastening structure, so that multiple top rods of the riveting structure protrude from the through holes of the pre-fastening structure base, and the hinge bolts pass through the U-shaped grooves on the edge of the pre-fastening structure base plate and are fastened with knurled nuts. H. Use a rivet head to rivet the rivets; I. Structure for pull-out riveting; J. Loosen the nut, turn the swivel screw outward, turn the rocker outward, and clear the central working area; K. Remove the assembled workpiece switch.

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