CN210121664U - Rotary riveting head structure - Google Patents

Abstract

The utility model relates to a rotary riveting head structure, the lower end of a rotary riveting head body of the rotary riveting head structure is provided with a first roller and a second roller which are arranged side by side and are arranged concentrically, and the first annular groove of the first roller is connected with the second annular groove of the second roller to form an annular processing groove surface, wherein, the arrangement of the two rollers changes the friction contact between the traditional spin riveting joint and the rivet into rolling contact, on one hand, the rolling contact can not generate radial acting force on the rivet, so that the rivet is not easy to crack, on the other hand, compared with the friction type roll riveting, the spin riveting joint and the rolling type roll riveting of the rivet, because of no static friction, the upper surface of the riveted rivet is smoother and smoother, the noise during processing is greatly reduced, the driving acting force required by processing under the same condition is smaller, and the processing efficiency is high.

Description

Rotary riveting head structure

Technical Field

The utility model relates to a rivet soon device field especially relates to a rivet soon structure

Background

For some products, such as fishing line wheels, rivets on the fishing line wheels are usually connected by a spin riveting process, and compared with press riveting, the spin riveting has obvious advantages, and on one hand, the spin riveting machine can provide larger spin riveting force than a press riveting machine under the same condition, so that the spin riveting molding is easier; on the other hand, the spin riveting machine is formed by pressing and riveting through a motion trail, the riveting effect is better than that of the spin riveting machine, and the internal stress is eliminated.

Conventional spin riveting adopts the pendulum die that has the bottom surface for the arcwall face, makes the die part of rivet produce plastic deformation through the arcwall face, and then reaches the purpose of connection fixing, and chinese utility model patent for patent No. CN201520110770.1 just discloses "a spin riveting device", and in this spin riveting device, the spin die lower extreme has the concave arc face, and the concave arc face is direct and rivet upper surface contact, finally accomplishes the riveting. Although the spin riveting method can realize riveting, the rigid contact between the concave arc surface and the upper surface of the rivet generates radial acting force at the end of the rivet due to the friction, so that the rivet is easy to crack once meeting the rivet with brittle material, and generates huge noise during processing, thereby having poor use feeling.

Further improvements are therefore needed for spin-on mechanisms.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a make difficult fracture of rivet and little rotary riveting head structure of noise

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a rivet head structure soon, is including being used for treating rivet on the riveting product to roll the rivet joint body soon of riveting, rivet joint body lower extreme soon is provided with first gyro wheel and the second gyro wheel that sets up side by side, first gyro wheel and second gyro wheel are with the pivot setting, first annular groove has been seted up to first gyro wheel on the outer peripheral face of neighbouring second gyro wheel one side, second annular groove has been seted up to the second gyro wheel on the outer peripheral face of neighbouring first gyro wheel one side, first annular groove and second annular groove link up mutually and form and be annular processing grooved surface, are in by rolling under the state of riveting at the rivet, the lower part of processing grooved surface contacts with the up end of rivet.

In order to ensure that the upper end of the machined rivet is smoother, the surface of the machining groove, which is contacted with the rivet, is an arc surface.

In order to ensure that the rolling riveting stroke is halved and the rolling riveting on the upper surface of the rivet is smooth in the rotating process, the diameters of the first roller and the second roller are equal.

In order to ensure that the riveting residues are not accumulated, a gap for the riveting residues to pass through is formed between the first roller and the second roller, and the adjacent surfaces of the first roller and the second roller and the gap are smooth planes.

Specifically, the first roller and the second roller synchronously rotate clockwise or anticlockwise along the circumferential direction of the upper end face of the rivet.

In order to form the machined groove surface, the first annular groove is arranged on the periphery of one side, adjacent to the gap, of the first roller and is inwards recessed; the second annular groove is arranged on the periphery of one side, adjacent to the gap, of the second roller and is recessed inwards.

In order to ensure the connection of the first roller, the second roller and the spin riveting head body, the lower end of the spin riveting head body is provided with a containing groove with a downward opening, and the first roller and the second roller can be rotatably connected in the containing groove through the rotating shaft.

Preferably, the periphery of the spin riveting joint body is further sleeved with a protective sleeve capable of limiting the rotating shaft to fall off.

Compared with the prior art, the utility model has the advantages of: this rivet head structure's rivet head body lower extreme is provided with first gyro wheel and the second gyro wheel that sets up side by side soon, first gyro wheel and the concentric setting of second gyro wheel, and the first annular groove of first gyro wheel links up mutually with the second annular groove of second gyro wheel and forms and be annular groove face, wherein, the setting up of two gyro wheels changes traditional rivet head and rivet's frictional contact and becomes the roll formula contact, roll formula contact can not produce radial effort to the rivet on the one hand, make the rivet difficult fracture, on the other hand rivet head and rivet roll formula's the rivet of rolling are rolled and are compared in the friction formula and roll the rivet, because do not have the existence of static friction, the upper surface of rivet after the riveting is more smooth and clean, and the noise of man-hour has greatly been reduced, and the required driving force of processing is littleer under the same condition, machining efficiency is high.

Drawings

Fig. 1 is a schematic view of the spin rivet joint body and a fishing line wheel to be riveted according to an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of the spin-rivet joint body according to an embodiment of the present invention;

FIG. 3 is another angle configuration of FIG. 2 with the protective sheath omitted;

fig. 4 is a cross-sectional view of the overall structure of the spin rivet joint body according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, for the present invention, in this embodiment, the spin rivet head structure includes a spin rivet head body 2, the spin rivet head body 2 in this embodiment is connected to the output shaft of the driving mechanism, the driving mechanism is the motor of the pneumatic riveter, generally speaking, the product 1 to be riveted is fixed on a fixed seat by taking the fishing line wheel as an example, the pneumatic riveter motor rotates at high speed to drive the spin rivet head body 2 to rotate at high speed, the pedal control switch is pressed down, the whole spin rivet head body 2 moves downwards, and contacts with the rivet on the fishing line wheel, so as to rivet the rivet on the fishing line wheel.

In this embodiment, the lower end of the spin rivet joint body 2 is provided with the first roller 3 and the second roller 4 which are arranged side by side, specifically, the lower end of the spin rivet joint body 2 is provided with the accommodating groove 6 with a downward opening, the first roller 3 and the second roller 4 can be rotatably connected in the accommodating groove 6 through the rotating shaft 7, namely, the first roller 3 and the second roller 4 are arranged with the rotating shaft 7, the diameters of the first roller 3 and the second roller 4 in the embodiment are equal, the riveting design of the two rollers is realized, the riveting stroke is saved for the conventional swing rivet head, the sum of the path lengths of the two rollers which rotate for half a circle respectively is equivalent to the rotation of the conventional unilateral swing rivet head for a circle, the riveting time is shortened, and the riveting efficiency is higher.

In this embodiment, the first roller 3 is provided with a first annular groove 21 on the outer peripheral surface of one side adjacent to the second roller 4, the second roller 4 is provided with a second annular groove 22 on the outer peripheral surface of one side adjacent to the first roller 3, the first annular groove 21 and the second annular groove 22 are connected to form an annular processing groove surface 2a, in order to ensure that the upper end of the processed rivet is smoother, the surface of the processing groove surface 2a, which is in contact with the rivet, is an arc surface, in a state that the rivet is ground and riveted, the lower part of the processing groove surface 2a is in contact with the upper end surface of the rivet, and in order to form the processing groove surface, the first annular groove 21 is arranged on the periphery of one side of the first roller 3, which is adjacent to the gap, and is recessed inwards; the second annular groove 22 is provided on the periphery of the second roller 4 on the side adjacent to the gap and is recessed inward.

In order to ensure that the rolling riveting stroke is halved and the upper surface of the rivet is smoothly rolled and riveted in the rotating process, the diameters of the first roller 3 and the second roller 4 are equal.

In this embodiment, a gap for passing the riveting scraps is formed between the first roller 3 and the second roller 4, the surfaces of the first roller 3 and the second roller 4 adjacent to the gap are both smooth planes, and in order to ensure smooth rotation, the riveting scraps are not accumulated in the gap, and the smoothness of the smooth planes is close to a mirror surface.

Foretell first gyro wheel 3 and the setting of second gyro wheel 4 change the friction contact of traditional rivet head body 2 and rivet and become the roll formula contact, add man-hour, the rivet up end is located foretell facing groove face 2a, and rivet head body 2 rotates soon this moment, drives two gyro wheels and rotates, and two gyro wheels still can use the pivot to rotate as axle self owing to with the rivet contact, and first gyro wheel 3 and second gyro wheel 4 rotate clockwise or synchronous anticlockwise along the circumference of rivet up end promptly. Roll formula contact can not produce radial effort to the rivet on the one hand, makes the rivet difficult for the fracture, and on the other hand revolves rivet joint body and rivet roll formula roll rivet compare in friction formula roll rivet, owing to do not have the existence of stiction, has greatly reduced the noise of adding man-hour, and the required driving force of processing is littleer under the same condition, and machining efficiency is high.

In the embodiment, the hardness of the two roller materials DC53 after vacuum quenching can reach HRC62-64 degrees, most metal materials can be ground and riveted, and the universality is strong.

In this embodiment, still the cover is equipped with protective sheath 5 and can restrict pivot 7 and drop in the periphery of riveting joint body 2 soon, and this protective sheath 5 can also play the effect of protection processing groove face 2a to a certain extent.

Claims (8)

1. The utility model provides a spin rivet head structure, includes and is used for treating rivet on the riveting product to roll the spin rivet joint body (2) of riveting, its characterized in that: spin rivet joint body (2) lower extreme is provided with first gyro wheel (3) and second gyro wheel (4) that set up side by side, first gyro wheel (3) and second gyro wheel (4) set up with pivot (7), first annular groove (21) have been seted up on first gyro wheel (3) the outer peripheral face of neighbouring second gyro wheel (4) one side, second annular groove (22) have been seted up on second gyro wheel (4) the outer peripheral face of neighbouring first gyro wheel (3) one side, first annular groove (21) and second annular groove (22) link up mutually and form and are annular processing grooved surface (2a), are in by rolling under the state of riveting at the rivet, the lower part of processing grooved surface (2a) contacts with the up end of rivet.

2. The rotary rivet head structure of claim 1, wherein: the surface of the processing groove surface (2a) contacted with the rivet is an arc surface.

3. The rivet head structure of claim 2, wherein: the diameters of the first roller (3) and the second roller (4) are equal.

4. The rivet head structure of claim 3, wherein: a gap for riveting scraps to pass through is formed between the first roller (3) and the second roller (4), and the surfaces of the first roller (3) and the second roller (4) adjacent to the gap are smooth planes.

5. The rotary rivet head structure of claim 1, wherein: the first idler wheel (3) and the second idler wheel (4) synchronously rotate clockwise or synchronously rotate anticlockwise along the circumferential direction of the upper end face of the rivet.

6. The rotary rivet head structure of claim 4, wherein: the first annular groove (21) is arranged on the periphery of one side, adjacent to the gap, of the first roller (3) and is inwards recessed; the second annular groove (22) is arranged on the periphery of one side, adjacent to the gap, of the second roller (4) and is inwards concave.

7. The rotary rivet head structure of claim 1, wherein: the lower end of the spin-riveting joint body (2) is provided with a containing groove (6) with a downward opening, and the first roller (3) and the second roller (4) can be rotatably connected in the containing groove (6) through the rotating shaft (7).

8. The rotary rivet head structure of claim 1, wherein: the periphery of the spin riveting joint body (2) is further sleeved with a protective sleeve (5) capable of limiting the rotating shaft (7) to fall off.

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