Riveting unit and riveting mechanism

Abstract

The utility model discloses a riveting unit and a riveting mechanism. The riveting unit comprises a first plate; a second plate; the riveting unit comprises a flange head, a rivet pressing part, a stamping part and a material containing part, and a sealing part is arranged on the end face, facing the stamping part, of the flange head; the upper die presses the head of the flange, under the combined action of the stamping part and the lower die on the second plate, the stamping part enters the mounting hole to downwards stamp the second plate in the axis direction, and part of materials of the second plate enter the second containing groove through extrusion of the second pressing riveting part; and meanwhile, part of the material of the first plate enters the first material containing groove through extrusion of the first press riveting part, so that the riveting unit is riveted with the first plate and the second plate. The utility model has the advantages that the second plate does not need to be pre-perforated, the two layers of plates are simultaneously mounted, and the riveting unit is provided with the sealing part which can be connected with the plates, so that mechanical sealing is realized, and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting devices, in particular to a riveting unit and a riveting mechanism. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] In the prior art, both layers of sheet materials to be riveted need to be pre-drilled. When multiple parts are riveted, the second layer of sheet materials cannot be accurately aligned, resulting in the parts being pressed off-center and affecting the riveting effect. Existing riveted parts do not have a sealing function, and the connection between the sheets needs to be coated with sealant. Existing self-piercing riveted parts require special equipment for installation, which is expensive and has a high cost for riveting installation.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a riveting unit and a riveting mechanism to address the deficiencies of the prior art. The second plate does not need to be pre-drilled, which solves the installation problem of the riveting unit and the second layer of plate and improves the riveting quality and efficiency.

[0006] The embodiment of the present application discloses a riveting unit, comprising: a flange head, a riveting part and a stamping part arranged along an axial direction;

[0007] The riveting part includes a first riveting part and a second riveting part arranged at the bottom of the flange head;

[0008] A punching part, which cooperates with the die assembly to punch holes in the plate;

[0009] A material containing portion, wherein a first material containing groove is formed between the first pressure riveting portion and the second pressure riveting portion, a second material containing groove is formed between the second pressure riveting portion and the punching portion, and a diameter of the first material containing groove is greater than a diameter of the second material containing groove;

[0010] Wherein, a sealing portion is provided on one end surface of the flange head facing the stamping portion;

[0011] The diameter of the punching portion is larger than the diameter of the second material containing groove and smaller than the diameter of the second riveting portion. The diameter of the second riveting portion is larger than the diameter of the first material containing groove and smaller than the diameter of the first riveting portion.

[0012] Furthermore, in the above-mentioned riveting unit, the sealing portion is a ring-shaped protruding tooth or a groove.

[0013] Furthermore, in the above-mentioned riveting unit, the first riveting portion is a curved surface structure with the flange head facing the stamping portion;

[0014] Alternatively, the first riveting portion is a boss structure provided on an end surface of the flange head facing the stamping portion.

[0015] Furthermore, in the above-mentioned riveting unit, the first riveting portion is provided with a first side wall along the axial direction, and the first side wall is provided with anti-rotation portions arranged in a ring array along its radial direction.

[0016] Furthermore, in the above-mentioned riveting unit, the second riveting portion is provided with a second side wall along the axial direction, and the second side wall is provided with anti-rotation portions arranged in a ring array along its radial direction;

[0017] Alternatively, an anti-rotation portion is provided on an end surface of the second riveting portion facing the stamping portion.

[0018] Furthermore, in the above-mentioned riveting unit, the anti-rotation portion is a tendon, a convex tooth or a groove.

[0019] The embodiment of the present application also discloses a riveting mechanism, including:

[0020] A first plate, wherein the first plate is pre-set with a mounting hole;

[0021] a second plate, the second plate being arranged below the first plate;

[0022] As in the above-mentioned riveting unit, the diameter of the second riveting portion is smaller than the diameter of the mounting hole;

[0023] A mold assembly, the mold assembly comprising an upper mold and a lower mold, the upper mold is arranged on the top of the flange head, and the lower mold is arranged on the bottom of the second plate;

[0024] Among them, the upper mold presses the flange head, and under the joint action of the stamping part and the lower mold on the second plate, the stamping part enters the mounting hole and stamps the second plate downward along the axial direction, and part of the material of the second plate enters the second material containing groove through the extrusion of the second riveting part, and at the same time, part of the material of the first plate enters the first material containing groove through the extrusion of the first riveting part, so that the riveting unit is riveted to the first plate and the second plate.

[0025] Furthermore, in the above-mentioned riveting mechanism, the sealing portion and the first plate form a self-locking structure.

[0026] In summary, the above structure adopted in the embodiment of the utility model has the following advantages:

[0027] 1. The riveting unit and riveting mechanism described in the utility model do not need to pre-drill holes in the second plate, which saves the processing cost of the plate, and the two layers of plate can be installed at the same time, which improves the installation efficiency;

[0028] 2. The riveting mechanism described in the utility model has a sealing part that can be connected to the plate to achieve mechanical sealing, without the need to apply additional sealant, thus saving costs;

[0029] 3. The riveting mechanism described in the utility model uses a common mold assembly when installing two layers of plates, which is clean, environmentally friendly, convenient and simple to install, saving the cost of installation equipment.

[0030] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of this specification 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 recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 is a schematic diagram of a riveting unit in an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of a riveting unit in another embodiment of the present application;

[0034] Figure 3 is a schematic diagram of a riveting unit in another embodiment of the present application;

[0035] Figure 4 is a schematic diagram of a riveting unit in yet another embodiment of the present application;

[0036] Figure 5 This is a schematic diagram of the installation of the riveting mechanism in the embodiment of the present application. Figure 1 ;

[0037] Figure 6 This is a schematic diagram of the installation of the riveting mechanism in the embodiment of the present application. Figure 2 .

[0038] The figure marks of the above drawings are: 10, riveting unit; 1, flange head; 2, riveting part; 21, first riveting part; 22, second riveting part; 3, material receiving part; 31, first material receiving groove; 32, second material receiving groove; 4, anti-rotation part; 5, sealing part; 6, stamping part; 7, first plate; 71, mounting hole; 8, second plate; 9, upper mold; 11, lower mold. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0040] The following is an explanation of the implementation of the utility model through specific specific embodiments. Those skilled in the art can understand the advantages and effects of the utility model from the contents disclosed in this specification. The utility model can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without deviating from the concept of the utility model. In addition, the drawings of the utility model are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the utility model in detail, but the disclosed contents are not intended to limit the scope of protection of the utility model.

[0041] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0042] Reference Figures 1 to 6 As shown, the embodiment of the present application discloses a riveting unit 10, comprising: a flange head 1, a riveting part 2 and a stamping part 6 arranged along the axial direction; the flange head 1 can be circular, hexagonal or polygonal in other shapes;

[0043] The riveting part 2 includes a first riveting part 21 and a second riveting part 22 arranged at the bottom of the flange head 1; during the riveting process, the riveting part 2 squeezes the plate, and can squeeze and deform part of the material of the plate to flow into the material receiving part 3;

[0044] The punching part 6 cooperates with the die assembly to punch holes in the plate; the punching part 6 cooperates with the die assembly to punch holes in the plate during the riveting process to achieve a self-piercing function;

[0045] The material receiving portion 3, a first material receiving groove 31 is formed between the first pressure riveting portion 21 and the second pressure riveting portion 22, and a second material receiving groove 32 is formed between the second pressure riveting portion 22 and the punching portion 6, and the diameter of the first material receiving groove 31 is larger than the diameter of the second material receiving groove 32, so as to better realize the extrusion deformation connection between the riveting unit and the plate; the first material receiving groove 31 and the second material receiving groove 32 can be circular grooves or annular grooves of other shapes, which are used to accommodate the plate to flow in under extrusion deformation, so that the entire riveting unit 10 and the plate form an anti-push function;

[0046] Among them, a sealing portion 5 is provided on one end face of the flange head 1 facing the stamping portion 6; in the present embodiment, the sealing portion 5 is a ring-shaped convex tooth or a concave annular groove, and the sealing portion 5 can be a closed annular structure such as a convex annular tooth or a concave annular groove, which can be tightly locked with the plate to improve the sealing of the overall structure.

[0047] The diameter of the punching portion 6 is larger than the diameter of the second material receiving groove 32 and smaller than the diameter of the second riveting portion 22 . The diameter of the second riveting portion 22 is larger than the diameter of the first material receiving groove 31 and smaller than the diameter of the first riveting portion 21 .

[0048] Specifically, refer to Figure 1 In this embodiment, the first riveting portion 21 is a boss structure provided on one end surface of the flange head 1 facing the stamping portion 6;

[0049] Or, refer to Figure 2 In another embodiment, the first riveting portion 21 is a curved surface structure with the flange head 1 facing the stamping portion 6 .

[0050] Specifically, refer to Figure 3 In another embodiment, the first riveted portion 21 is provided with a first side wall along the axial direction, the first side wall is provided with groove-shaped anti-rotation portions 4 arranged in a ring array along its radial direction, and the second riveted portion 22 is provided with an anti-rotation portion 4 with tendons on one end face facing the stamping portion 6.

[0051] Or, refer to Figure 4 In another embodiment, the first riveted portion 21 is provided with a first side wall along the axial direction, and the first side wall is provided with a convex tooth anti-rotation portion 4 arranged in a ring array along its radial direction, and the second riveted portion 22 is provided with a second side wall along the axial direction, and the second side wall is provided with a groove anti-rotation portion 4 arranged in a ring array along its radial direction.

[0052] Specifically, in the above embodiments, the anti-rotation portion 4 is a tendon, convex tooth or groove-shaped structure, and the anti-rotation portion 4 can form a positioning and locking structure between the riveting unit 10 and the plate to prevent the riveting unit 10 from rotating after riveting.

[0053] In addition, refer to Figures 5 and 6 The present application also discloses a riveting mechanism, including:

[0054] A first plate 7, wherein the first plate 7 is pre-set with a mounting hole 71;

[0055] a second plate 8, wherein the second plate 8 is arranged below the first plate 7;

[0056] The riveting unit 10 in the above embodiment comprises: a flange head 1, a riveting part 2 and a punching part 6 arranged along the axial direction; the flange head 1 may be circular, hexagonal or polygonal in other shapes;

[0057] The riveting part 2 comprises a first riveting part 21 and a second riveting part 22, wherein the diameter of the second riveting part 22 is smaller than the diameter of the mounting hole 71;

[0058] A punching part 6, wherein the punching part 6 cooperates with the die assembly to punch holes in the external plate;

[0059] The material receiving portion 3, a first material receiving groove 31 is formed between the first pressure riveting portion 21 and the second pressure riveting portion 22, and a second material receiving groove 32 is formed between the second pressure riveting portion 22 and the punching portion 6, and the diameter of the first material receiving groove 31 is greater than the diameter of the second material receiving groove 32, which can better realize the extrusion deformation connection between the riveting unit and the plate, and can squeeze part of the material of the second plate to first meet the full combination between the second material receiving groove 32 and the second plate 8, thereby improving the stability of the riveting mechanism;

[0060] Wherein, a sealing portion 5 is provided on one end surface of the flange head 1 facing the stamping portion 6;

[0061] The diameter of the punching portion 6 is larger than the diameter of the second material receiving groove 32 and smaller than the diameter of the second riveting portion 22. The diameter of the second riveting portion 22 is larger than the diameter of the first material receiving groove 31 and smaller than the diameter of the first riveting portion 21.

[0062] A mold assembly, the mold assembly comprising an upper mold 9 and a lower mold 11, the upper mold 9 is arranged on the top of the flange head 1, and the lower mold 11 is arranged on the bottom of the second plate 8;

[0063] Among them, the upper mold 9 presses the flange head 1, and under the joint action of the stamping part 6 and the lower mold 11 on the second plate 8, the stamping part 6 enters the mounting hole 71 and stamps the second plate 8 downward along the axial direction, and part of the material of the second plate 8 enters the second material receiving groove 32 through the extrusion of the second riveting part 22, and at the same time, part of the material of the first plate 7 enters the first material receiving groove 31 through the extrusion of the first riveting part 21, so that the riveting unit 10 is riveted with the first plate 7 and the second plate 8.

[0064] Specifically, in this embodiment, the sealing portion 5 forms a self-locking structure with the first plate 7. The sealing portion 5 can be a closed annular structure such as a convex annular tooth or a concave annular groove, which can be tightly locked with the first plate 7 to improve the sealing of the overall structure.

[0065] In this embodiment, the first plate 7 and the second plate 8 can be metal plates, or other similar non-metal plates that can undergo plastic deformation. In addition, the riveting unit 10 can be made of aluminum, copper, carbon steel, stainless steel and other non-ferrous metal materials.

[0066] Specifically, in this embodiment, the following Figure 1 The first riveting portion 21 shown is a boss structure provided on one end face of the flange head 1 facing the stamping portion 6. In the riveting connection between the riveting unit 10 and the first plate 7, the first riveting portion 21 is riveted to the first plate 7, and the top of the flange head 1 can be flush with the upper surface of the first plate 7; or the boss structure of the first riveting portion 21 can be extruded and connected with the first plate 7, so that the top of the flange head 1 protrudes from the upper surface of the first plate 7; in another embodiment, the first riveting portion 21 is used as shown in FIG. Figure 2 The first riveted portion 21 shown is a curved structure with the flange head 1 facing the stamping portion 6. In the riveting connection between the riveting unit 10 and the first plate 7, the entire flange head 1 is riveted to the first plate 7, and the top of the first riveted portion 21 (i.e., the top of the flange head 1) is flush with the upper surface of the first plate 7.

[0067] By means of the above structure, the riveting unit 10 is placed in the preset installation hole 71 in the first plate 7, and the riveting unit 10 is pressed into the first plate 7 and the second plate 8 at one time using the riveting equipment and the installation mold assembly. The lower mold 11 is arranged at the bottom of the second plate 8, and the upper mold 9 applies pressure to the flange head 1 of the riveting unit. Through the cooperation of the stamping part 6 and the lower mold 11, the shear force on the second plate 8 is transmitted downward, so that the stamping part 6 of the riveting unit 10 completes the stamping of the second plate 8, and the waste is transferred to the discharge hole of the lower mold 11 for collection and unified treatment. In this process, the diameter of the second riveting part 22 of the riveting unit 10 is larger than the diameter of the stamping part 6. During the stamping process, the second riveting part 22 extrude and deform the second plate 8, so that part of the material of the plate The material flows into the second material receiving groove 32 to realize the riveting of the riveting unit 10 and the second plate 8; at the same time, under the support of the second plate 8, the flange head 1 and the first riveting part 21 squeeze the first plate 7, so that part of the material of the first plate 7 flows into the first material receiving groove 31 to realize the riveting of the riveting unit 10 and the first plate 7. During the riveting process, the sealing part 5 is also pressed into the first plate 7 at the same time, and the sealing function of the overall riveting mechanism can be realized without the need to apply additional sealant. At the same time, the anti-rotation part 4 is also pressed into the first plate 7 and the second plate 8 to realize the anti-rotation function of the overall riveting mechanism. The riveting unit of the present application can be suitable for the connection of materials of different materials and different thicknesses. The connection strength between the riveted multi-layer plates is high, and the riveting mechanism has high sealing performance.

[0068] The contents disclosed above are only preferred feasible embodiments of the present utility model, and are not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the specification and drawings of the present utility model are included in the scope of the patent application of the present utility model.

[0069] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld devices or portable devices, tablet devices, multi-processor systems, microprocessor-based systems, set-top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc.

[0070] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A riveting unit, characterized in that: include: A flange head, a riveting part and a stamping part arranged along the axial direction; The riveting part includes a first riveting part and a second riveting part arranged at the bottom of the flange head; A punching part, which cooperates with the die assembly to punch holes in the plate; A material containing portion, wherein a first material containing groove is formed between the first pressure riveting portion and the second pressure riveting portion, a second material containing groove is formed between the second pressure riveting portion and the punching portion, and a diameter of the first material containing groove is greater than a diameter of the second material containing groove; Wherein, a sealing portion is provided on one end surface of the flange head facing the stamping portion; The diameter of the punching portion is larger than the diameter of the second material containing groove and smaller than the diameter of the second riveting portion. The diameter of the second riveting portion is larger than the diameter of the first material containing groove and smaller than the diameter of the first riveting portion.

2. The riveting unit according to claim 1, characterized in that: The sealing portion is a ring-shaped protruding tooth or a groove.

3. The riveting unit according to claim 2, characterized in that: The first riveting portion is a curved surface structure with the flange head facing the stamping portion; Alternatively, the first riveting portion is a boss structure provided on an end surface of the flange head facing the stamping portion.

4. The riveting unit according to claim 3, characterized in that: The first riveting portion is provided with a first side wall along the axial direction, and the first side wall is provided with anti-rotation portions arranged in a ring array along its radial direction.

5. The riveting unit according to claim 4, characterized in that: The second riveting portion is provided with a second side wall along the axial direction, and the second side wall is provided with anti-rotation portions arranged in a ring array along its radial direction; Alternatively, an anti-rotation portion is provided on an end surface of the second riveting portion facing the stamping portion.

6. The riveting unit according to claim 4 or 5, characterized in that: The anti-rotation part is a tendon, a convex tooth or a groove.

7. A riveting mechanism, characterized in that: include: A first plate, wherein the first plate is pre-set with a mounting hole; a second plate, the second plate being arranged below the first plate; The riveting unit according to any one of claims 1 to 6, wherein a diameter of the second riveting portion is smaller than a diameter of the mounting hole; A mold assembly, the mold assembly comprising an upper mold and a lower mold, the upper mold is arranged on the top of the flange head, and the lower mold is arranged on the bottom of the second plate; Among them, the upper mold presses the flange head, and under the joint action of the stamping part and the lower mold on the second plate, the stamping part enters the mounting hole and stamps the second plate downward along the axial direction, and part of the material of the second plate enters the second material containing groove through the extrusion of the second riveting part, and at the same time, part of the material of the first plate enters the first material containing groove through the extrusion of the first riveting part, so that the riveting unit is riveted to the first plate and the second plate.

8. The riveting mechanism according to claim 7, characterized in that: The sealing portion and the first plate form a self-locking structure.

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