A riveting mechanism of a mobile riveting machine

Abstract

The utility model discloses a riveting mechanism of mobile riveting machine, including support seat, air cylinder, the support seat rear side top is provided with adjusting assembly, adjusting assembly includes sliding slot, the inside rotation of sliding slot is provided with the thread rod, the top of sliding slot is provided with the installation groove, the inside swing of installation groove is provided with round plate, the bottom of round plate is provided with the limit rod, the top of round plate is provided with the connecting rod, the top of connecting rod is provided with the limit gear, the utility model: through setting adjusting assembly, when adjusting, the limit gear is separated from gear groove to the rotary motion of thread rod by knob, and the height adjustment of air cylinder is realized by the thread cooperation of thread rod and internal thread column, and the limit gear is reset and is clamped into gear groove after adjusting, avoids the rotary motion of thread rod non -adjustment state, ensures that the air cylinder position is stable, and this adjusting mode can adjust the height of air cylinder according to riveting piece thickness.

Description

Technical Field

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

[0002] Mobile riveting machines are riveting equipment with mobility, which can flexibly adapt to riveting operations under different working conditions and can connect workpieces without fixed installation. The core of its riveting structure consists of a riveting head (including pressure head and locating pin), a power transmission component, a workpiece positioning fixture and a mobile base. The power unit drives the riveting head to apply axial pressure or impact load to the rivet, causing the rivet to undergo plastic deformation and form an unremovable mechanical connection with the connected parts. It is widely used in component assembly scenarios in fields such as machinery manufacturing and construction engineering.

[0003] The existing Chinese patent publication number CN202106552U, entitled "Riveting Mechanism of a Special Riveting Machine for Automobile Seatbelts," explicitly states in its abstract that "This utility model discloses a riveting mechanism for a special riveting machine for automobile seatbelts, including a fixedly installed positioning support seat and a punch that mates with the positioning support seat for riveting. The positioning support seat has a limiting part for limiting the winding mandrel, and the shape of the limiting part matches the shape of the winding mandrel. This utility model, when applied to a special riveting machine, replaces the existing manual riveting operation. The single riveting time is controlled within 3 seconds, resulting in high production efficiency, low labor intensity, strong riveting without loosening, uniform and stable force value that is easy to control, and a riveting rework rate of about 1%. It allows for standardized operations, improves product quality, and is easy for operators to use."

[0004] However, in existing structures, the cylinder position is fixed, and the cylinder extension stroke is mostly a preset fixed value (because its extension mechanism is usually determined by hardware parameters such as air source pressure and cylinder diameter). This makes it inconvenient to make fine adjustments on-site according to the actual situation of the riveted parts. As a result, when riveting parts are changed during the operation, if the overall thickness of the riveted parts is too large, the cylinder extension stroke cannot be adjusted accordingly. When the punch descends to the preset position, it will directly apply excessive pressure to the riveted parts. This may not only cause indentations and deformation on the surface of the riveted parts, but may also cause excessive shaping of the rivets due to pressure concentration, affecting the flatness of the connection between multiple riveted objects. If the overall thickness of the riveted parts is too small, it may be difficult for the punch to form sufficient effective contact pressure with the riveted parts after descending, resulting in insufficient clamping. This leads to loose fit between multiple riveted objects, with small gaps, affecting the stability of the connection. Utility Model Content

[0005] The purpose of this utility model is to provide a riveting mechanism for a mobile riveting machine to solve the problem mentioned in the background art that the cylinder position is fixed, making it inconvenient to rivet parts of different thicknesses.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A riveting mechanism for a mobile riveting machine includes a support base and a cylinder, wherein an adjustment component is provided on the upper rear side of the support base; The adjusting assembly includes a slide groove, a threaded rod rotatably disposed inside the slide groove, a mounting groove at the top of the slide groove, a circular plate movably disposed inside the mounting groove, a limit rod at the bottom of the circular plate, a connecting rod at the top of the circular plate, and a limit gear at the top of the connecting rod.

[0007] In a preferred embodiment of this utility model, an installation tube is provided on the outside of the cylinder, and an internally threaded post is provided behind the installation tube.

[0008] In a preferred embodiment of this utility model, the internal threaded column is slidably connected to the groove, and the threaded rod is threadedly connected to the internal threaded column.

[0009] In a preferred embodiment of this utility model, a limiting groove is provided at the top of the threaded rod, and the limiting rod is slidably connected to the limiting groove.

[0010] In a preferred embodiment of the present invention, a rotating groove is provided at the top of the inner side of the slide, and a rotating plate is rotatably arranged inside the rotating groove, and the connecting rod passes through the rotating plate.

[0011] In a preferred embodiment of this utility model, a spring is provided at the bottom of the rotating plate, and the bottom of the spring is connected to a circular plate.

[0012] In a preferred embodiment of the present invention, a gear groove is provided at the top of the slide groove, and the limiting gear is disassembled and assembled in the gear groove.

[0013] In a preferred embodiment of this utility model, a punch is provided at the bottom of the cylinder, and a knob is provided at the top of the limiting gear.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0015] Beneficial effects: By setting up the adjustment component, during adjustment, pulling the knob upwards disengages the limit gear from the gear slot. The knob then drives the threaded rod to rotate, and the cylinder height is adjusted by the threaded engagement between the threaded rod and the internal threaded column. After adjustment, the spring pushes the limit gear back into the gear slot, preventing the threaded rod from rotating in the non-adjusted state and ensuring the cylinder position is stable. This adjustment method allows for flexible adjustment of the cylinder height according to the thickness of the riveted parts. When the riveted parts are too thick, adjusting the cylinder to raise it prevents excessive pressure from the punch when it descends, thus preventing indentations, deformation, and excessive rivet shaping. When the riveted parts are too thin, adjusting the cylinder to lower it ensures sufficient effective contact pressure between the punch and the riveted parts after it descends, preventing gaps and loose workpiece fit due to insufficient pressure. Ultimately, this ensures the riveting quality and connection stability of riveted parts of different thicknesses.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the main structure of the riveting mechanism in a mobile riveting machine; Figure 2 This is a schematic diagram of the connection structure between the internal threaded column and the slide groove in the riveting mechanism of a mobile riveting machine; Figure 3 A schematic diagram of the top structure of the slide groove in the riveting mechanism of a mobile riveting machine; Figure 4 This is a schematic diagram of the internal mounting structure of the mounting slot in the riveting mechanism of a mobile riveting machine. Figure 5 This is a schematic diagram of the connection structure between the threaded rod and the limiting rod in the riveting mechanism of a mobile riveting machine.

[0018] In the diagram: 1. Support base; 11. Cylinder; 12. Punch; 13. Mounting tube; 14. Internal threaded column; 2. Slide groove; 21. Threaded rod; 22. Mounting groove; 23. Rotating groove; 24. Gear groove; 3. Rotating plate; 31. Spring; 32. Circular plate; 33. Limiting rod; 34. Limiting groove; 4. Connecting rod; 41. Limiting gear; 42. Knob. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] Please refer to Figures 1-5 This utility model discloses a riveting mechanism for a mobile riveting machine, comprising a support base 1 and a cylinder 11. The support base 1 can be made of 45# steel, possessing good structural strength and capable of stably supporting the overall components. The cylinder 11 can be a standard SC series cylinder (model SC63×50-S), with a punch 12 fixedly connected to its bottom telescopic end. The punch 12 can be made of Cr12MoV mold steel, which has high hardness and strong wear resistance, meeting the needs of long-term riveting operations. The cylinder 11 is externally connected to a matching miniature air compressor as an air source (model WX-1600, working pressure 0.4-0.8MPa). The air source is connected to the cylinder 11 through an air supply pipe, which can be made of PU high-pressure air pipe to ensure stable gas transmission.

[0021] An adjustment assembly is provided on the upper rear side of the support base 1. The adjustment assembly includes a slide groove 2, which is fixedly connected to the support base 1. A threaded rod 21 is rotatably provided inside the slide groove 2. The threaded rod 21 can be made of 40Cr material and its surface is heat treated to improve toughness and wear resistance. Its thread specification is M16×2. An installation tube 13 is fixedly connected to the outside of the cylinder 11. The installation tube 13 can be made of 304 stainless steel and has corrosion resistance. An internal threaded post 14 is fixedly connected to the rear of the installation tube 13. The internal threaded post 14 can be made of 45 steel. Its internal thread matches the threaded rod 21. The internal threaded post 14 is slidably connected to the slide groove 2, and the threaded rod 21 is threadedly connected to the internal threaded post 14.

[0022] The top of the slide chute 2 is provided with an installation groove 22, and a circular plate 32 is movably installed inside the installation groove 22. The circular plate 32 can be made of 45# steel and can slide, rise, and rotate within the installation groove 22. A limiting rod 33 is fixedly connected to the bottom of the circular plate 32. The limiting rod 33 can be made of 40Cr material, and its size and height are adapted to the limiting groove 34. The top of the threaded rod 21 is provided with a limiting groove 34, and the limiting rod 33 is slidably connected to the limiting groove 34. A rotating groove 23 is opened on the top inner side of the slide chute 2. A rotating plate 3 is rotatably installed inside the rotating groove 23. A spring 31 is fixedly connected to the bottom of the rotating plate 3. The spring 31 can be made of 65Mn spring steel and has good elastic restoring performance. The bottom of the spring 31 is fixedly connected to the circular plate 32.

[0023] A connecting rod 4 is fixedly connected to the top of the circular plate 32. The connecting rod 4 can be made of 45# steel. A limiting gear 41 is fixedly connected to the top of the connecting rod 4. The limiting gear 41 can be made of 40Cr material, with 20 teeth and a module of 2. The connecting rod 4 passes through the rotating plate 3. A gear groove 24 is provided on the top of the slide 2. The tooth shape of the gear groove 24 matches that of the limiting gear 41. The limiting gear 41 is installed and removed in the gear groove 24. A knob 42 is fixedly connected to the top of the limiting gear 41. The knob 42 can be made of ABS engineering plastic with a non-slip textured surface for easy gripping and adjustment by the operator.

[0024] When the position of cylinder 11 needs to be adjusted according to the thickness of the riveted parts, the operator holds knob 42 and pulls it upwards, causing the limiting gear 41 to disengage from gear groove 24. During this process, the limiting rod 33 and the limiting groove 34 at the top of the threaded rod 21 maintain a sliding connection, and the limiting rod 33 will not slip out of the limiting groove 34. At this time, the connecting rod 4 is rotated by knob 42, and the connecting rod 4 further drives the circular plate 32 to rotate. The circular plate 32, through the cooperation of the limiting rod 33 and the limiting groove 34, drives the threaded rod 21 to rotate synchronously. When the threaded rod 21... After rotating the cylinder 11 to the position that matches the thickness of the riveted part, stop rotating the knob 42, align the limiting gear 41 with the gear groove 24 and release the knob 42. At this time, the spring 31 at the bottom of the rotating plate 3 pushes the circular plate 32 downward due to its own elastic restoring force. The circular plate 32 drives the connecting rod 4 and the limiting gear 41 to move downward synchronously, so that the limiting gear 41 is precisely engaged and locked into the gear groove 24. Through the circumferential limiting effect of the gear groove 24 on the limiting gear 41, the threaded rod 21 is prevented from rotating unexpectedly when not in the adjustment state, ensuring the stability of the cylinder 11 position.

[0025] The working principle of this utility model is as follows: the height of the cylinder 11 is adjusted by adjusting the component, the knob 42 is pulled upward to disengage the limiting gear 41 from the gear groove 24, and the limiting rod 33 remains in the limiting groove 34. The knob 42 is rotated to drive the threaded rod 21 to rotate. The threaded engagement between the threaded rod 21 and the internal threaded column 14 causes the internal threaded column 14 to slide along the slide groove 2, thereby driving the cylinder 11 to rise and fall synchronously to the position that matches the thickness of the riveted part. Then the knob 42 is released, and the spring 31 pushes the limiting gear 41 to engage with the gear groove 24, restricting the rotation of the threaded rod 21 to fix the position of the cylinder 11.

[0026] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A riveting mechanism for a mobile riveting machine, characterized in that: Includes a support base (1) and a cylinder (11), and an adjustment component is provided on the upper rear side of the support base (1); The adjustment assembly includes a slide (2), a threaded rod (21) is rotatably provided inside the slide (2), an installation groove (22) is provided at the top of the slide (2), a circular plate (32) is movably provided inside the installation groove (22), a limit rod (33) is provided at the bottom of the circular plate (32), a connecting rod (4) is provided at the top of the circular plate (32), and a limit gear (41) is provided at the top of the connecting rod (4).

2. The riveting mechanism of a mobile riveting machine according to claim 1, characterized in that, An installation tube (13) is provided on the outside of the cylinder (11), and an internally threaded post (14) is provided behind the installation tube (13).

3. The riveting mechanism of a mobile riveting machine according to claim 2, characterized in that, The internal threaded column (14) is slidably connected to the groove (2), and the threaded rod (21) is threadedly connected to the internal threaded column (14).

4. The riveting mechanism of a mobile riveting machine according to claim 1, characterized in that, The threaded rod (21) is provided with a limiting groove (34) at the top, and the limiting rod (33) is slidably connected to the limiting groove (34).

5. The riveting mechanism of a mobile riveting machine according to claim 1, characterized in that, The inner top of the slide (2) is provided with a rotating groove (23), and a rotating plate (3) is rotatably provided inside the rotating groove (23), and the connecting rod (4) passes through the rotating plate (3).

6. The riveting mechanism of a mobile riveting machine according to claim 5, characterized in that, A spring (31) is provided at the bottom of the rotating plate (3), and the bottom of the spring (31) is connected to a circular plate (32).

7. The riveting mechanism of a mobile riveting machine according to claim 1, characterized in that, The top of the slide (2) is provided with a gear groove (24), and the limiting gear (41) is installed and removed in the gear groove (24).

8. The riveting mechanism of a mobile riveting machine according to claim 1, characterized in that, The cylinder (11) is provided with a punch (12) at the bottom and the limit gear (41) is provided with a knob (42) at the top.

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