Nut riveting device with positioning

Abstract

The utility model provides a nut riveting device with positioning, including machine table, nut positioning seat is installed on the machine table, is equipped with the first profiling cavity of bearing nut on the nut positioning seat, is equipped with the limiting protrusion of nut clamping in first profiling cavity, the platen bearing seat is installed on the machine table, is equipped with the second profiling cavity of platen on the platen bearing seat, and is equipped with the positioning column of wearing platen on the platen bearing seat, and the riveting hole on platen is coaxial with the nut on the nut positioning seat, the door type frame is installed with riveting portion corresponding with nut positioning seat on, still is installed with the pressure -bearing portion corresponding with platen bearing seat on the door type frame, the pressure -bearing portion is used for to the longitudinal limit of platen on platen bearing seat, the riveting portion is used for to the nut riveting of platen on platen bearing seat. The utility model through all -round accurate positioning to nut and platen, and double position synchronous riveting, realize riveting quality high consistency, production efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of nut riveting equipment, specifically relating to a nut riveting device with positioning. Background Technology

[0002] Nut riveting is a crucial fastening process in manufacturing, which uses plastic deformation to securely encapsulate a nut onto a substrate. This technology is widely used in the assembly of electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switching instruments, and furniture decoration, and is particularly suitable for connecting various metal sheets and pipes.

[0003] like Figure 1 The diagram shows the structure of nut A and support plate B after riveting. However, the existing nut riveting device has the following defects during its use: 1. The existing nut relies only on a simple contour cavity for positioning. Under the impact force of riveting, the nut is prone to rotation or movement, resulting in substandard riveting quality and easy loosening during subsequent use; 2. The existing riveting device has a complex structure and a single-station design, resulting in a slow production cycle. Those skilled in the art urgently need to solve these technical problems. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a nut riveting device with positioning, which achieves high consistency of riveting quality and high production efficiency by accurately positioning the nut and the support plate in all directions and simultaneously riveting in two stations.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A nut riveting device with positioning function, including a machine base;

[0007] A nut positioning seat is mounted on the machine base. The nut positioning seat has a first contoured cavity for carrying the nut, and a limiting protrusion for engaging with the nut is provided in the first contoured cavity.

[0008] A pallet support is mounted on the machine base. The pallet support has a second contour cavity for the pallet and a positioning post through which the pallet passes. Both ends of the pallet extend to the nut positioning seat, and the riveting hole on the pallet is coaxial with the nut on the nut positioning seat.

[0009] A portal frame is installed on the machine base and positioned above the nut positioning seat and the pallet bearing seat. A riveting part corresponding to the nut positioning seat is installed on the portal frame, and a pressure-bearing part corresponding to the pallet bearing seat is also installed on the portal frame.

[0010] The pressure-bearing part is used to longitudinally limit the position of the pallet on the pallet support;

[0011] The riveting part is used to rivet the nut onto the support plate on the nut positioning seat.

[0012] In a preferred embodiment of the present invention, a cutout matching the limiting protrusion is provided on the outer peripheral surface of the nut.

[0013] In a preferred embodiment of the present invention, a relief groove for a support plate is provided on one side of the nut positioning seat.

[0014] In a preferred embodiment of the present invention, the portal frame includes a frame plate arranged parallel to the machine base, and support columns are provided on both sides of the frame plate, with one end of the support column away from the frame plate extending to the machine base.

[0015] In a preferred embodiment of this utility model, the pallet bearing seat and the pressure bearing part are arranged near the nut positioning seat. The pressure bearing part includes a lifting cylinder installed below the frame plate and a contouring pressure head installed at the telescopic end of the lifting cylinder. The contouring pressure head is made of rubber material.

[0016] In a preferred embodiment of the present invention, the riveting part includes a gas-hydraulic booster cylinder installed above the frame plate, and the telescopic end of the gas-hydraulic booster cylinder passes through the frame plate and is connected to a floating punch.

[0017] In a preferred embodiment of the present invention, two nut positioning seats are provided on the machine base, corresponding to the riveting positions at both ends of the pallet, and two riveting parts are provided on the frame plate corresponding to the nut positioning seats.

[0018] Beneficial effects:

[0019] This utility model discloses a nut riveting device with positioning. The nut is precisely locked radially and angularly through the first contour cavity and the limiting protrusion. The support plate is precisely limited laterally and longitudinally through the second contour cavity, the positioning post and the pressure bearing part, and automatically aligns with the nut coaxially. By accurately positioning both in all directions, the riveting position, depth and forming effect of the support plate are highly consistent.

[0020] The portal frame of this utility model integrates the pressure-bearing part and the riveting part, making the overall size of the nut riveting device small, the layout compact, and saving equipment space.

[0021] This invention, by setting two nut positioning seats and riveting parts, can simultaneously complete the riveting of the nuts at both ends of the pallet in a sequential cycle, achieving synchronous riveting at two workstations, uniform stress, good riveting quality, and doubled production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the riveting structure of the pallet and nut described in the background art of this utility model;

[0023] Figure 2 A schematic diagram of a nut riveting device with positioning provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the nut positioning seat described in this utility model;

[0025] Figure 4 The present utility model Figure 3 Enlarged view of a portion at point A;

[0026] Figure 5 This is a schematic diagram of the installation structure of the pallet support and the pallet described in this utility model;

[0027] Figure 6 The front view of a nut riveting device with positioning provided by this utility model.

[0028] In the picture: 1 machine;

[0029] 2 Nut positioning seat, 21 First contour cavity, 22 Limiting protrusion, 23 Clearance groove;

[0030] 3. Support plate bearing seat; 31. Second contour cavity; 32. Positioning post;

[0031] 4 portal frame, 41 frame slabs, 42 support columns;

[0032] 5. Pressure-bearing section; 51. Lifting cylinder; 52. Contouring pressure head;

[0033] 6. Riveting part, 61. Pneumatic-hydraulic booster cylinder, 62. Floating punch. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figure 2-6 As shown, the present invention provides a nut riveting device with positioning, including a machine base 1;

[0036] Nut positioning seat 2 is installed on machine base 1. The nut positioning seat 2 is provided with a first contour cavity 21 for carrying the nut. The first contour cavity 21 is provided with a limiting protrusion 22 that engages with the nut to limit the radial rotation of the nut.

[0037] The pallet support 3 is mounted on the machine base 1. The pallet support 3 has a second contour cavity 31 for the pallet and a positioning post 32 for the pallet to pass through it. The positioning post 32 matches the positioning hole on the pallet. The two ends of the pallet extend to the nut positioning seat 2, and the riveting hole on the pallet is coaxial with the nut on the nut positioning seat 2.

[0038] A portal frame 4 is installed on the machine base 1 and is positioned above the nut positioning seat 2 and the pallet bearing seat 3. A riveting part 6 corresponding to the nut positioning seat 2 is installed on the portal frame 4, and a pressure bearing part 5 corresponding to the pallet bearing seat 3 is also installed on the portal frame 4.

[0039] The pressure-bearing part 5 is used to longitudinally limit the position of the pallet on the pallet support 3;

[0040] The riveting part 6 is used to rivet the nut onto the support plate on the nut positioning seat 2.

[0041] The working principle and beneficial effects of the above embodiments are as follows:

[0042] This utility model discloses a nut riveting device with positioning. The nut is placed into the first contour cavity 21 of the nut positioning seat 2. The limiting protrusion 22 in the first contour cavity 21 engages with the nut to restrict the radial rotation of the nut. The support plate is placed in the second contour cavity 31 of the support plate bearing seat 3. The positioning post 32 passes through the positioning hole of the support plate to achieve lateral positioning and at the same time ensure that the riveting hole of the support plate is coaxial with the nut.

[0043] The pressure-bearing part 5 on the portal frame 4 moves downward and applies pressure to the tray on the tray support 3 to complete the longitudinal limit of the tray and prevent the tray from moving up and down during riveting.

[0044] The riveting part 6 on the portal frame 4, corresponding to the nut positioning seat 2, exerts downward force to rivet the joint between the support plate and the nut, so that the nut and the support plate are fixedly connected.

[0045] The pallet of this utility model has a triple positioning structure of the second contour cavity 31, the positioning post 32 and the pressure bearing part 5. The nut is doubly positioned by the first contour cavity 21 and the limiting protrusion 22, which ensures that the riveting hole of the pallet and the nut are always coaxial, thus ensuring the subsequent riveting accuracy.

[0046] The portal frame 4 integrates the pressure-bearing part 5 and the riveting part 6, making the overall size of the nut riveting device small, the layout compact, and saving equipment space.

[0047] In one embodiment,

[0048] A notch matching the limiting protrusion 22 is provided on the outer circumferential surface of the nut; the notch and the limiting protrusion 22 are precisely and rigidly engaged, restricting the radial rotation of the nut and preventing the nut from shifting at an angle due to force during riveting.

[0049] In one embodiment,

[0050] The pallet extends toward the nut positioning seat 2, and its side edge will collide with the side wall of the nut positioning seat 2, causing the pallet to be unable to be placed completely flat in place. Therefore, a relief groove 23 for the pallet is provided on one side of the nut positioning seat 2 to provide a space for the pallet to be accommodated and pass through.

[0051] In one embodiment,

[0052] The aforementioned portal frame 4 includes a frame plate 41 arranged parallel to the machine base 1, and support columns 42 are provided on both sides of the frame plate 41. The end of the support column 42 away from the frame plate 41 extends to the machine base 1.

[0053] The frame plate 41 is parallel to the machine base 1, providing an installation carrier for the pressure-bearing part 5 and the riveting part 6. The support column 42 is installed vertically on the left and right sides of the frame plate 41, with the end facing away from the frame plate 41 extending downward and fixed on the machine base 1 to form a gate-shaped structure, making the gate-shaped frame 4 as a whole stable. The pressure-bearing part 5 and the riveting part 6 are both installed on the frame plate 41, and the two independently realize the pressure-bearing and riveting actions.

[0054] In one embodiment,

[0055] To avoid defects such as warping during the riveting process of one end of the pallet, the pallet bearing seat 3 and the pressure bearing part 5 are arranged close to the nut positioning seat 2. The pressure bearing part 5 includes a lifting cylinder 51 installed below the frame plate 41 and a contouring pressure head 52 installed at the extension end of the lifting cylinder 51. The contouring pressure head 52 is made of rubber material.

[0056] The lifting cylinder 51 provides a stable vertical clamping force. The rubber contouring head 52 will not scratch or damage the surface of the pallet when clamping it. At the same time, even if there are slight unevenness or installation tilt of the pallet, the rubber contouring head 52 can fully fit with it through its own elastic deformation, ensuring that the clamping force is evenly distributed and avoiding local stress concentration that could cause the pallet to deform.

[0057] In one embodiment,

[0058] The aforementioned riveting part 6 includes a pneumatic-hydraulic booster cylinder 61 installed above the frame plate 41. The telescopic end of the pneumatic-hydraulic booster cylinder 61 passes through the frame plate 41 and is connected to a floating punch 62.

[0059] When the pneumatic-hydraulic booster cylinder 61 is activated, it pushes the piston to generate a large and stable output force, which is then transmitted to the floating punch 62. The punch automatically adjusts itself and precisely presses into the riveting hole of the pallet, completing the riveting of the nut and the pallet.

[0060] In one embodiment,

[0061] Two nut positioning seats 2 are provided on the machine base 1, which correspond to the riveting positions at both ends of the support plate. Two riveting parts 6 are provided on the frame plate 41 corresponding to the nut positioning seats 2, so as to realize synchronous riveting at two workstations.

[0062] In summary:

[0063] This utility model discloses a nut riveting device with positioning. The nut is precisely locked radially and angularly through the first contour cavity and the limiting protrusion. The support plate is precisely limited laterally and longitudinally through the second contour cavity, the positioning post and the pressure bearing part, and automatically aligns with the nut coaxially. By accurately positioning both in all directions, the riveting position, depth and forming effect of the support plate are highly consistent.

[0064] The portal frame of this utility model integrates the pressure-bearing part and the riveting part, making the overall size of the nut riveting device small, the layout compact, and saving equipment space.

[0065] This invention, by setting two nut positioning seats and riveting parts, can simultaneously complete the riveting of the nuts at both ends of the pallet in a sequential cycle, achieving synchronous riveting at two workstations, uniform stress, good riveting quality, and doubled production efficiency.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The terms "front," "back," "left," and "right" used in the text are not specific and are mainly for more intuitive illustration of the technical solution, and do not constitute a limitation. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made according to the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A nut riveting device with positioning function, characterized in that: Including machine tool (1); Nut positioning seat (2) is installed on the machine base (1). The nut positioning seat (2) is provided with a first contour cavity (21) for carrying the nut. A limiting protrusion (22) for engaging with the nut is provided in the first contour cavity (21). A pallet support (3) is installed on the machine base (1). The pallet support (3) has a second contour cavity (31) for the pallet and a positioning post (32) through which the pallet passes. The two ends of the pallet extend to the nut positioning seat (2), and the riveting hole on the pallet is coaxial with the nut on the nut positioning seat (2). A portal frame (4) is installed on the machine base (1) and placed above the nut positioning seat (2) and the pallet bearing seat (3). A riveting part (6) corresponding to the nut positioning seat (2) is installed on the portal frame (4). A pressure bearing part (5) corresponding to the pallet bearing seat (3) is also installed on the portal frame (4). The pressure-bearing part (5) is used to longitudinally limit the pallet on the pallet support (3); The riveting part (6) is used to rivet the nut on the support plate on the nut positioning seat (2).

2. The nut riveting device with positioning according to claim 1, characterized in that: The outer circumferential surface of the nut has a cut that matches the limiting protrusion (22).

3. The nut riveting device with positioning according to claim 1, characterized in that: A relief groove (23) for a support plate is provided on one side of the nut positioning seat (2).

4. The nut riveting device with positioning according to claim 1, characterized in that: The portal frame (4) includes a frame plate (41) arranged parallel to the machine base (1), and support columns (42) are provided on both sides of the frame plate (41). One end of the support column (42) away from the frame plate (41) extends to the machine base (1).

5. A nut riveting device with positioning according to claim 1, characterized in that: The pallet support seat (3) and the pressure bearing part (5) are arranged near the nut positioning seat (2). The pressure bearing part (5) includes a lifting cylinder (51) installed below the frame plate (41) and a contouring pressure head (52) installed at the extension end of the lifting cylinder (51). The contouring pressure head (52) is made of rubber material.

6. A nut riveting device with positioning according to claim 1, characterized in that: The riveting part (6) includes a gas-liquid booster cylinder (61) installed above the frame plate (41), and the telescopic end of the gas-liquid booster cylinder (61) passes through the frame plate (41) and is connected to a floating punch (62).

7. A nut riveting device with positioning according to claim 4, characterized in that: Two nut positioning seats (2) are provided on the machine base (1), which correspond to the riveting positions at both ends of the pallet. Two riveting parts (6) are provided on the frame plate (41) corresponding to the nut positioning seats (2).

Images