Sheet metal processing riveting machine

Abstract

The utility model relates to the technical field of riveting press, specifically relates to a sheet metal processing riveting press, include: base, one side fixedly connected with riveting press of base upper end face is provided with the positioning buffer subassembly in the upper end face of base close riveting press, the positioning buffer subassembly includes the elastic expansion link fixedly connected in the base upper end face, the fixedly connected with elastic plate of elastic expansion link telescopic end, the fixedly connected with the sub positioning ring of elastic plate far from the center position of elastic expansion link one side, through the elastic expansion link, elastic plate and sub positioning ring in positioning buffer subassembly, realize to the riveting press and carry out the pressure to make standard spare and press into sheet metal workpiece, when the upper end surface of sheet metal workpiece and riveting press contact, except the other position of riveting ram outside to carry out the elastic buffer when, make the rest pressure of riveting press through the elastic plate dispersion buffer, both avoid because of pressure concentration on the workpiece surface forms the indentation, guarantee sheet metal part appearance quality, reduce the rejection rate.

Description

Technical Field

[0001] This utility model relates to the field of riveting machine technology, specifically to a sheet metal riveting machine. Background Technology

[0002] A sheet metal riveting machine is a specialized piece of equipment for processing sheet metal parts. It applies pressure to firmly press standard parts such as riveting nuts and screws into the sheet metal workpiece, forming a non-removable connection. This equipment can precisely control pressure and stroke, ensuring accurate positioning and a strong connection of the riveted parts. It features high efficiency, stability, and ease of operation, and is widely used in the assembly of sheet metal structural parts in industries such as electronics, automobiles, and home appliances. It effectively improves the efficiency and quality of sheet metal processing, as illustrated by Chinese Patent Publication No. CN112792288A, which discloses a sheet metal riveting machine.

[0003] Existing sheet metal riveting machines, when pressing standard parts into sheet metal workpieces, often apply excessive pressure exceeding the sheet metal material's tolerance limits, causing irreversible plastic deformation and resulting in indentations on the workpiece surface. This not only severely affects the aesthetic appearance of the sheet metal parts and lowers the product's grade, but may also damage the material structure, weaken the workpiece's strength and rigidity, increasing the risk of deformation and breakage during later use. Furthermore, it leads to a decrease in product qualification rates and increases production costs. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a sheet metal processing riveting machine, which can effectively solve the problem that when the sheet metal processing riveting machine presses standard parts into the sheet metal workpiece, the pressure is too high and exceeds the limit of the sheet metal material, causing irreversible plastic deformation of the material.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a sheet metal riveting machine, comprising:

[0007] A base, on one side of the upper surface of the base, is fixedly connected to a riveting machine. A positioning buffer assembly is provided on the upper surface of the base near the riveting machine. The positioning buffer assembly includes an elastic telescopic rod fixedly connected to the upper surface of the base. An elastic plate is fixedly connected to the telescopic end of the elastic telescopic rod. A sub-positioning ring is fixedly connected to the center position of the side of the elastic plate away from the elastic telescopic rod.

[0008] Furthermore, a pressure limiting component is provided on the upper surface of the base, and the pressure limiting component corresponds to the position of the sub-positioning ring. The pressure limiting component includes a housing fixedly connected to the upper surface of the base, and holes are provided at the center of all four sides of the housing.

[0009] Furthermore, a pressure box is fixedly connected to the inner bottom of the outer shell, a slide plate is slidably connected to the inner top of the pressure box, and a female positioning ring is fixedly connected to the upper surface of the slide plate, with the female positioning ring and the child positioning ring corresponding in position.

[0010] Furthermore, a rectangular array of springs is fixedly connected to the inner bottom of the pressure box, and the other end of each spring is fixedly connected to the bottom of the slide plate. Pressure adjustment structures are provided around the pressure box.

[0011] Furthermore, the pressure adjustment structure includes a pressure box fixedly connected to the side of the pressure box, a resistance slide plate slidably connected inside the pressure box, a scale fixedly connected to the upper surface of the pressure box away from the pressure box, telescopic rods fixedly connected to the four corners of the side of the pressure box away from the pressure box, and a pressure plate fixedly connected to the other end of each telescopic rod. Two threaded rods are symmetrically rotatably connected to the side of the pressure box away from the pressure box, and the other end of each threaded rod passes through the pressure plate and is threadedly connected to the pressure plate.

[0012] Furthermore, an airbag is fixedly connected to the side of the pressure plate facing the pressure box, and the other side of the airbag is fixedly connected to the pressure box. A scale is fixedly connected to the upper surface of the pressure plate, and the scale corresponds to the position of the ruler, and the other end of the ruler is slidably connected to the scale.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0014] 1. By using the elastic telescopic rod, elastic plate, and sub-positioning ring in the positioning and buffering assembly, pressure is applied to the standard part by the riveting machine to press it into the sheet metal workpiece. When the upper surface of the sheet metal workpiece contacts the riveting machine, elastic buffering is provided at positions other than the riveting head. Specifically, the elastic telescopic rod, in conjunction with the elastic plate, descends synchronously with the riveting machine as it presses the standard part into the sheet metal workpiece. When the elastic plate contacts the surface of the sheet metal workpiece, the riveting head passes through the sub-positioning ring to apply pressure to the standard part. The pressure from the rest of the riveting machine acts directly on the elastic plate. After the elastic plate adheres to the workpiece surface, the pressure head passes through the sub-positioning ring to apply pressure to the standard part. The remaining pressure from the riveting machine is dispersed and buffered by the elastic plate, which avoids pressure concentration on the workpiece surface and the formation of indentations, ensuring the appearance quality of the sheet metal part. It also reduces the impact on the structural strength of the workpiece and lowers the scrap rate.

[0015] 2. Through the pressure limiting assembly, including the pressure box, slide plate, female positioning ring, and pressure adjustment structure, pressure is limited on the sheet metal workpiece when the riveting machine applies pressure to press the standard part into it. This buffers the process when the pressure on the standard part exceeds the limit. When the standard part is subjected to pressure from the riveting machine, the pressure is transmitted to the slide plate through the female positioning ring, causing the slide plate to descend along the pressure box. Because the pressure box stores air pressure corresponding to the current riveting machine pressure, the slide plate will not slide down when the riveting machine pressure does not exceed the limit. When the pressure exceeds the limit, the slide plate slides down. The pressure adjustment structure increases or decreases the air pressure in the pressure box to adapt to the pressure limiting requirements of different types of standard parts. Utilizing air pressure characteristics, stability is maintained when the pressure is within the limit, and the slide plate slides down to buffer when the pressure exceeds the limit, effectively preventing damage to the sheet metal workpiece due to excessive pressure. Simultaneously, the pressure adjustment structure can flexibly adjust the air pressure in the pressure box to adapt to the different pressure limiting requirements of different standard parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the positioning buffer assembly of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of the pressure limiting component of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the pressure limiting component of this utility model;

[0022] Figure 6 This is a schematic diagram of the pressure box structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the internal structure of the pressure adjustment structure of this utility model.

[0024] Reference numerals: 1. Base; 2. Riveting machine;

[0025] 3. Positioning buffer assembly; 31. Elastic telescopic rod; 32. Elastic plate; 33. Sub-positioning ring;

[0026] 4. Pressure limiting assembly; 41. Housing; 411. Hole; 42. Pressure box; 43. Slide plate; 44. Female positioning ring;

[0027] 45. Pressure adjustment structure; 451. Pressure box; 452. Resistance slide plate; 453. Scale; 454. Telescopic rod; 455. Airbag; 456. Pressure plate; 457. Scale mark; 458. Threaded rod;

[0028] 46. ​​Spring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The present invention will be further described below with reference to the embodiments.

[0031] Example: Refer to Figures 1 to 2 A sheet metal riveting machine, comprising:

[0032] A base 1 is provided, and a riveting machine 2 is fixedly connected to one side of the upper surface of the base 1. A positioning buffer assembly 3 is provided on the upper surface of the base 1 near the riveting machine 2. The positioning buffer assembly 3 includes an elastic telescopic rod 31 fixedly connected to the upper surface of the base 1. An elastic plate 32 is fixedly connected to the telescopic end of the elastic telescopic rod 31. A sub-positioning ring 33 is fixedly connected to the center position of the side of the elastic plate 32 away from the elastic telescopic rod 31.

[0033] The riveting machine 2 in the base 1 is used to firmly press standard parts such as riveting nuts and riveting screws into the sheet metal workpiece. When the riveting machine 2 descends to press the standard parts into the sheet metal workpiece, the elastic plate 32 in the positioning buffer assembly 3 will squeeze the elastic telescopic rod 31 under the pressure of the riveting machine 2, thereby causing the elastic telescopic rod 31 to contract.

[0034] Reference Figures 3 to 4 The upper surface of the base 1 is provided with a pressure limiting component 4, and the pressure limiting component 4 corresponds to the position of the sub-positioning ring 33. The pressure limiting component 4 includes a housing 41 fixedly connected to the upper surface of the base 1, and holes 411 are provided at the center of the four sides of the housing 41.

[0035] A pressure box 42 is fixedly connected to the inner bottom of the outer casing 41, and a slide plate 43 is slidably connected to the inner top of the pressure box 42. A female positioning ring 44 is fixedly connected to the upper surface of the slide plate 43, and the positions of the female positioning ring 44 and the female positioning ring 33 correspond.

[0036] The female positioning ring 44 and the female positioning ring 33 are used to position the press head of the riveting machine 2 and the standard part when they are pressed into the sheet metal workpiece. When the riveting machine 2 presses the standard part into the sheet metal workpiece, the pressure of the sheet metal workpiece is transmitted to the slide plate 43 through the female positioning ring 44, which in turn causes the slide plate 43 to slide down in the pressure box 42.

[0037] Reference Figures 4 to 5 Multiple springs 46 are fixedly connected to the rectangular array at the bottom of the pressure box 42. The other end of each spring 46 is fixedly connected to the bottom of the slide plate 43. Pressure adjustment structures 45 are provided around the pressure box 42.

[0038] Spring 46 is used to ensure that when the riveting machine 2 loses pressure on the slide plate 43, the slide plate 43 returns to its initial state in the pressure box 42.

[0039] Reference Figures 5 to 7 The pressure adjustment structure 45 includes a pressure box 451 fixedly connected to the side of the pressure box 42. A resistance slide plate 452 is slidably connected inside the pressure box 451. A scale 453 is fixedly connected to the upper surface of the pressure box 451 away from the pressure box 42. Telescopic rods 454 are fixedly connected to the four corners of the side of the pressure box 451 away from the pressure box 42. The other end of each telescopic rod 454 is fixedly connected to a pressure plate 456. Two threaded rods 458 are symmetrically rotatably connected to the side of the pressure box 451 away from the pressure box 42. The other end of the threaded rods 458 passes through the pressure plate 456 and is threadedly connected to the pressure plate 456.

[0040] The pressure adjustment structure 45 uses a pressure box 451 to connect with a pressure box 42. The resistance slide plate 452 in the pressure box 451 separates the interior of the pressure box 451. As the slide plate 43 slides down, the pressure in the pressure box 42 increases, thereby breaking the pressure balance on both sides of the pressure box 451. This causes the resistance slide plate 452 to start sliding inside the pressure box 451, thus buffering the pressure inside the pressure box 42.

[0041] Reference Figures 6 to 7 An airbag 455 is fixedly connected to the side of the pressure plate 456 facing the pressure box 451. The other side of the airbag 455 is fixedly connected to the pressure box 451. A scale 457 is fixedly connected to the upper end face of the pressure plate 456. The scale 457 corresponds to the scale 453, and the other end of the scale 453 is slidably connected to the scale 457.

[0042] The distance between the pressure plate 456 and the pressure box 451 is calculated using the ruler 453 and the scale 457, thereby determining the movement of the pressure plate 456 and the condition of the airbag 455.

[0043] The working principle of this utility model is as follows:

[0044] First, the operator places the sheet metal workpiece on the base 1, aligning the position to be riveted with the center of the sub-positioning ring 33 and the female positioning ring 44. The workpiece is initially positioned through the cooperation of the two. Then, the riveting machine 2 is started. When the equipment moves downward, it pushes the elastic plate 32 down synchronously, and the elastic telescopic rod 31 is compressed. When the elastic plate 32 contacts the surface of the workpiece, the pressure head of the riveting machine 2 passes through the sub-positioning ring 33. At this time, the pressure of the non-pressure head part of the riveting machine 2 is dispersed through the elastic plate 32. The buffering effect of the elastic telescopic rod 31 is used to avoid the workpiece surface from being indented due to pressure concentration.

[0045] When the riveting machine 2 applies pressure to the standard part, the pressure is transmitted to the slide plate 43 through the female positioning ring 44. If the current pressure does not exceed the preset air pressure threshold in the pressure box 42, the slide plate 43 remains stationary; if the pressure exceeds the limit, the slide plate 43 slides downward in the pressure box 42, the spring 46 is compressed, and the buffer mechanism is triggered.

[0046] When adapting to high-strength standard parts, the operator rotates the threaded rod 458 clockwise, causing the pressure plate 456 to move towards the pressure chamber 451, compressing the air bladder 455 to increase the air pressure inside the pressure chamber 451, thereby increasing the limited pressure threshold of the pressure chamber 42. At this time, the position of the scale mark 457 on the scale 453 moves synchronously, which is convenient for controlling the adjustment amount. When processing thin-walled workpieces, the threaded rod 458 is rotated counterclockwise to move the pressure plate 456 away from the pressure chamber 451, the air bladder 455 is depressurized, and the limited pressure of the pressure chamber 42 is reduced. The accuracy is confirmed by the correspondence between the scale mark 457 and the scale 453.

[0047] After the riveting operation is completed, the riveting machine 2 rises to reset, and the elastic telescopic rod 31 pushes the elastic plate 32 to rise back; at the same time, the slide plate 43 returns to the initial position of the pressure box 42 under the action of the spring 46, completing the equipment state reset and preparing for the next processing.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sheet metal riveting machine, characterized in that, include: A base (1) is provided with a riveting machine (2) fixedly connected to one side of the upper surface of the base (1). A positioning buffer assembly (3) is provided on the upper surface of the base (1) near the riveting machine (2). The positioning buffer assembly (3) includes an elastic telescopic rod (31) fixedly connected to the upper surface of the base (1). An elastic plate (32) is fixedly connected to the telescopic end of the elastic telescopic rod (31). A sub-positioning ring (33) is fixedly connected to the center position of the side of the elastic plate (32) away from the elastic telescopic rod (31).

2. The sheet metal riveting machine according to claim 1, characterized in that, The upper surface of the base (1) is provided with a pressure limiting component (4), and the pressure limiting component (4) corresponds to the position of the sub-positioning ring (33). The pressure limiting component (4) includes a shell (41) fixedly connected to the upper surface of the base (1), and holes (411) are opened at the center of the shell (41) around its perimeter.

3. A sheet metal riveting machine according to claim 2, characterized in that, A pressure box (42) is fixedly connected to the inner bottom of the outer shell (41), and a sliding plate (43) is slidably connected to the inner top of the pressure box (42). A female positioning ring (44) is fixedly connected to the upper surface of the sliding plate (43), and the positions of the female positioning ring (44) and the female positioning ring (33) correspond.

4. A sheet metal riveting machine according to claim 3, characterized in that, The inner bottom of the pressure box (42) is fixedly connected with a rectangular array of multiple springs (46), and the other end of each spring (46) is fixedly connected to the bottom of the slide plate (43). Pressure adjustment structures (45) are provided around the pressure box (42).

5. A sheet metal riveting machine according to claim 4, characterized in that, The pressure adjustment structure (45) includes a pressure box (451) fixedly connected to the side of the pressure box (42). A resistance slide plate (452) is slidably connected inside the pressure box (451). A scale (453) is fixedly connected to the upper surface of the pressure box (451) away from the pressure box (42). Telescopic rods (454) are fixedly connected to the four corners of the side of the pressure box (451) away from the pressure box (42). The other end of each telescopic rod (454) is fixedly connected to a pressure plate (456). Two threaded rods (458) are symmetrically rotatably connected to the side of the pressure box (451) away from the pressure box (42). The other end of each threaded rod (458) passes through the pressure plate (456) and is threadedly connected to the pressure plate (456).

6. A sheet metal riveting machine according to claim 5, characterized in that, An airbag (455) is fixedly connected to the side of the pressure plate (456) facing the pressure box (451), and the other side of the airbag (455) is fixedly connected to the pressure box (451). A scale (457) is fixedly connected to the upper surface of the pressure plate (456), and the scale (457) corresponds to the position of the ruler (453), and the other end of the ruler (453) is slidably connected to the scale (457).

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