Spindle of spin riveting machine

Abstract

The utility model relates to a main shaft of a spin riveting machine, which comprises a motor power transmission shaft, an eccentric hole transmission shaft, an eccentric shaft transmission shaft, a gear set, a swing head and a spin riveting die, a synchronous wheel is fixedly arranged at one end of the motor power transmission shaft, and the other end of the motor power transmission shaft is connected with one end of the eccentric shaft transmission shaft. The other end of the eccentric shaft transmission shaft is connected with the gear set; the gear set comprises a large gear and a small gear, the interior of the large gear is hollow, the large gear is provided with inner teeth, the small gear is provided with outer teeth, and the large gear is meshed with the small gear; the small gear is fixedly connected with a poke rod, the poke rod deviates from the circle center of the small gear, the poke rod extends into the swing head, and the spin riveting die is fixedly connected with the swing head; the motor power transmission shaft drives the eccentric shaft transmission shaft to rotate, so that the poke rod rotates eccentrically, and the swing head is driven to drive the spin riveting die to move eccentrically.

Description

Technical Field

[0001] The utility model relates to the field of rotary riveting machines, in particular to a main shaft of a rotary riveting machine. Background Art

[0002] The rotary riveting machine is a kind of equipment developed based on the principle of cold rolling. The motor drives the rivet head to rotate, and then provides downward pressure to the rivet head, driving the rivet head close to the workpiece, so that the rivet is deformed and the workpiece is riveted together. The main shaft of the rotary riveting machine is one of the most important components of the rotary riveting machine. The main shaft of the rotary riveting machine in the prior art is composed of a motor drive shaft, a planetary gear set, an eccentric shaft drive shaft, an eccentric hole drive shaft, a swing head, and a rotary riveting mold. The motor drive shaft drives the eccentric shaft drive shaft to rotate, and the eccentric shaft drive shaft transmits power to the swing head, which then drives the rotary riveting mold to move, thereby completing the rotary riveting of the product. However, the radial force borne by the eccentric shaft drive shaft and the eccentric hole drive shaft of the rotary riveting machine main shaft in the prior art is very large, which leads to poor stability of the rotary riveting machine main shaft. Summary of the invention

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a main shaft for a rotary riveting machine.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a spindle of a rotary riveting machine, comprising a motor power transmission shaft, an eccentric hole transmission shaft, an eccentric shaft transmission shaft, a gear set, a swing head, and a rotary riveting mold, wherein a synchronous wheel is fixedly installed on one end of the motor power transmission shaft, the other end of the motor power transmission shaft is connected to one end of the eccentric shaft transmission shaft, and the other end of the eccentric shaft transmission shaft is connected to the gear set; the gear set comprises a large gear and a small gear, the large gear is hollow inside and has internal teeth, the small gear has external teeth, and the large gear and the small gear are meshed; a toggle rod is fixedly connected to the small gear, the toggle rod deviates from the center of the small gear, the toggle rod extends into the swing head, and the rotary riveting mold and the swing head are fixedly connected; the motor power transmission shaft drives the eccentric shaft transmission shaft to rotate, so that the toggle rod rotates eccentrically, thereby driving the swing head to drive the rotary riveting mold to move eccentrically.

[0005] Furthermore, a first deep groove ball bearing is fixedly installed at each end of the motor power transmission shaft. The spin riveting machine main shaft also includes an outer seat of the motor power transmission shaft. The outer seat of the motor power transmission shaft sleeves the motor power transmission shaft therein, and the first deep groove ball bearing is installed in the outer seat of the motor power transmission shaft, so that the motor power transmission shaft can rotate relative to the outer seat of the motor power transmission shaft.

[0006] Furthermore, it also includes a coupling, which connects the motor power transmission shaft and the eccentric shaft transmission shaft together, so that the rotation of the motor power transmission shaft is transmitted to the eccentric shaft transmission shaft; and the center of the cross section of the eccentric shaft transmission shaft and the center of the cross section of the coupling are not on the same straight line.

[0007] Furthermore, three first needle bearings are fixedly mounted on one end of the eccentric shaft transmission shaft, and two second deep groove ball bearings are fixedly mounted on the other end of the eccentric shaft transmission shaft.

[0008] Furthermore, the eccentric hole transmission shaft sleeves the eccentric shaft transmission shaft therein, and the eccentric hole transmission shaft and the coupling are fixedly connected; thereby, the motor power transmission shaft drives the eccentric hole transmission shaft to rotate.

[0009] Furthermore, four second needle bearings are fixedly mounted on the eccentric hole transmission shaft. The main shaft of the rotary riveting machine also includes an eccentric hole transmission shaft outer seat. The eccentric hole transmission shaft outer seat sleeves the eccentric hole transmission shaft, and the second needle bearings are fixedly mounted inside the eccentric hole transmission shaft outer seat, so that the eccentric hole transmission shaft rotates in the eccentric hole transmission shaft outer seat.

[0010] Furthermore, it also includes a follower, which is fixedly connected to the swing head, and the follower has an internal chamber, and the internal chamber has an opening. The toggle rod extends into the internal chamber, and the toggle rod drives the follower to swing when following the rotation of the pinion, thereby realizing the swing of the swing head; the rivet mold is inserted and fixed in the swing head, so that the swing head drives the rivet mold to swing while the swing head swings.

[0011] Furthermore, it also includes a connecting piece, which connects the spin riveting die and the toggle rod together, so as to prevent the spin riveting die from being separated from the swing head due to a loose connection with the swing head.

[0012] Furthermore, it also includes a swing head support cover and a main shaft outer seat, the swing head support cover accommodates the swing head and the follower inside, and part of the rotary riveting mold extends out of the swing head support cover; the main shaft outer seat sleeves the gear set, the eccentric hole transmission shaft outer seat and the motor power transmission shaft outer seat inside, and the swing head support cover and the main shaft outer seat are fixed together by screws.

[0013] Furthermore, the pinion gear has two opposite sides, one side of the pinion gear is fixedly connected to the eccentric shaft transmission shaft, and the other side of the pinion gear is fixedly connected to the toggle rod, and the toggle rod deviates from the center of the pinion gear.

[0014] The beneficial effect of the present application is that the eccentric hole transmission shaft sleeve of the rotary riveting machine main shaft provided by the present application is provided with a plurality of needle bearings, and the eccentric shaft transmission shaft is provided with a plurality of needle bearings and deep groove ball bearings, so that when the eccentric hole transmission shaft and the eccentric shaft transmission shaft are subjected to a large radial impact force, the plurality of needle bearings and deep groove ball bearings can resist the impact force, thereby significantly increasing the life of the rotary riveting machine main shaft and enhancing the stability. Another advantage of the present application is that the rotation mode of the rotary riveting machine main shaft is not self-rotation like the motor shaft, but riveting is achieved by rotating along a point swing angle, and this riveting mode is very stable, has almost no vibration force, and does not require high product positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a structural schematic diagram of a rotary riveting machine spindle.

[0016] Figure 2 Another structural schematic diagram of a main shaft of a rotary riveting machine provided by the utility model.

[0017] Figure 3 Another structural schematic diagram of a main shaft of a rotary riveting machine provided by the utility model.

[0018] Figure 4 for Figure 3 A partially enlarged view of the main shaft of a rotary riveting machine is shown. DETAILED DESCRIPTION

[0019] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0020] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0021] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0022] Please refer to Figure 1-4 The present application provides a spindle of a rotary riveting machine, which includes a motor power transmission shaft 2, an eccentric hole transmission shaft 13, an eccentric shaft transmission shaft 6, a gear set 7, a swing head 11, and a spin riveting mold 10, wherein a synchronous wheel 1 is fixedly installed on one end of the motor power transmission shaft 2, the other end of the motor power transmission shaft 2 is connected to one end of the eccentric shaft transmission shaft 6, and the other end of the eccentric shaft transmission shaft 6 is connected to the gear set 7; the gear set 7 includes a large gear 71 and a small gear 72, and the large gear 71 is hollow inside and The large gear 71 is meshed with the small gear 72; a toggle rod 19 is fixedly connected to the small gear 72, the toggle rod 19 deviates from the center of the small gear 72, and the toggle rod 19 extends into the swing head 11, and the spin riveting mold 10 is fixedly connected to the swing head 11; the motor power transmission shaft 2 drives the eccentric shaft transmission shaft 6 to rotate, so that the toggle rod 19 rotates eccentrically, thereby driving the swing head 11 to drive the spin riveting mold 10 to move eccentrically.

[0023] In one embodiment of the present application, a first deep groove ball bearing 14 is fixedly installed at each end of the motor power transmission shaft, and the spindle of the riveting machine also includes a motor power transmission shaft outer seat 16, and the motor power transmission shaft outer seat 16 sleeves the motor power transmission shaft 2 therein, and the first deep groove ball bearing is installed in the motor power transmission shaft outer seat 16, so that the motor power transmission shaft 2 can rotate relative to the motor power transmission shaft outer seat 16.

[0024] In one embodiment of the present application, the main shaft of the rotary riveting machine further includes a coupling 15, which connects the motor power transmission shaft 2 and the eccentric shaft transmission shaft 6 together, so that the rotation of the motor power transmission shaft 2 is transmitted to the eccentric shaft transmission shaft 6; and the center of the cross section of the eccentric shaft transmission shaft 6 is not on the same straight line as the center of the cross section of the coupling 15. In this way, the eccentric shaft transmission shaft 6 is eccentric relative to the coupling 15.

[0025] In one embodiment of the present application, three first needle roller bearings 12 are fixedly mounted on one end of the eccentric shaft transmission shaft 6 , and two second deep groove ball bearings 5 ​​are fixedly mounted on the other end of the eccentric shaft transmission shaft 6 .

[0026] In one embodiment of the present application, the eccentric hole transmission shaft 13 sleeves the eccentric shaft transmission shaft 6 therein, and the eccentric hole transmission shaft 13 and the coupling 15 are fixedly connected; thereby, the motor power transmission shaft 2 drives the eccentric hole transmission shaft 13 to rotate.

[0027] In one embodiment of the present application, four second needle roller bearings 4 are fixedly mounted on the eccentric hole transmission shaft 13, and the spindle of the riveting machine also includes an eccentric hole transmission shaft outer seat 17, in which the eccentric hole transmission shaft outer seat 17 sleeves the eccentric hole transmission shaft 13, and the second needle roller bearings 4 are fixedly mounted inside the eccentric hole transmission shaft outer seat 17, so that the eccentric hole transmission shaft 13 can rotate in the eccentric hole transmission shaft outer seat 17.

[0028] In one embodiment of the present application, the spindle of the rotary riveting machine also includes a follower 8, the follower 8 and the swing head 11 are fixedly connected, the follower 8 has an internal chamber 80, the internal chamber 80 has an opening, the toggle rod 19 extends into the internal chamber 80, and the toggle rod 19 drives the follower 8 to swing when following the rotation of the pinion 72, thereby realizing the swing of the swing head 11; the rotary riveting mold 10 is inserted and fixed in the swing head 11, so that the swing head 11 swings and drives the rotary riveting mold 10 to swing.

[0029] In one embodiment of the present application, the main shaft of the rotary riveting machine also includes a connecting member 20, which connects the rotary riveting mold 10 and the toggle rod 19 together to prevent the rotary riveting mold 10 from being separated from the swing head 11 due to a loose connection with the swing head 11.

[0030] In one embodiment of the present application, the spindle of the rotary riveting machine also includes a swing head support cover 9 and a spindle outer seat 3, wherein the swing head support cover 9 accommodates the swing head 11 and the follower 8 therein, and a portion of the rotary riveting mold 10 extends out of the swing head support cover 9; the spindle outer seat 3 sleeves the gear set 7, the eccentric hole transmission shaft outer seat 17 and the motor power transmission shaft outer seat 16 therein, and the swing head support cover 9 and the spindle outer seat 3 are fixed together by screws.

[0031] In one embodiment of the present application, the pinion 72 has two opposite sides, one side of the pinion 72 is fixedly connected to the eccentric shaft transmission shaft 6, and the other side of the pinion 72 is fixedly connected to the toggle rod 19, and the toggle rod 19 deviates from the center of the pinion 72.

[0032] The eccentric hole transmission shaft sleeve of the rotary riveting machine main shaft provided by the present application is provided with a plurality of needle bearings, and the eccentric shaft transmission shaft is provided with a plurality of needle bearings and deep groove ball bearings, so that when the eccentric hole transmission shaft and the eccentric shaft transmission shaft are subjected to a large radial impact force, the plurality of needle bearings and deep groove ball bearings can resist the impact force, thereby significantly increasing the life of the rotary riveting machine main shaft and enhancing the stability. Another advantage of the present application is that the rotary riveting machine main shaft rotates not like a motor shaft, but realizes riveting by rotating along a point swing angle, which is very stable, has almost no vibration force, and has low requirements for product positioning.

[0033] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A spindle for a rotary riveting machine, characterized in that: It includes a motor power transmission shaft, an eccentric hole transmission shaft, an eccentric shaft transmission shaft, a gear set, a swing head, and a spin riveting mold, wherein a synchronous wheel is fixedly installed on one end of the motor power transmission shaft, the other end of the motor power transmission shaft is connected to one end of the eccentric shaft transmission shaft, and the other end of the eccentric shaft transmission shaft is connected to the gear set; the gear set includes a large gear and a small gear, the large gear is hollow inside and has internal teeth, the small gear has external teeth, and the large gear and the small gear are meshed; a toggle rod is fixedly connected to the small gear, the toggle rod deviates from the center of the small gear, the toggle rod extends into the swing head, and the spin riveting mold and the swing head are fixedly connected; the motor power transmission shaft drives the eccentric shaft transmission shaft to rotate, so that the toggle rod rotates eccentrically, thereby driving the swing head to drive the spin riveting mold to move eccentrically.

2. The spindle of the riveting machine according to claim 1, characterized in that: A first deep groove ball bearing is fixedly installed at each end of the motor power transmission shaft. The spin riveting machine main shaft also includes an outer seat of the motor power transmission shaft. The outer seat of the motor power transmission shaft sleeves the motor power transmission shaft therein, and the first deep groove ball bearing is installed in the outer seat of the motor power transmission shaft, so that the motor power transmission shaft can rotate relative to the outer seat of the motor power transmission shaft.

3. The spindle of the riveting machine according to claim 2, characterized in that: It also includes a coupling, which connects the motor power transmission shaft and the eccentric shaft transmission shaft together, so that the rotation of the motor power transmission shaft is transmitted to the eccentric shaft transmission shaft; and the center of the cross section of the eccentric shaft transmission shaft and the center of the cross section of the coupling are not on the same straight line.

4. The spindle of the riveting machine according to claim 3, characterized in that: Three first needle bearings are fixedly installed on one end of the eccentric shaft transmission shaft, and two second deep groove ball bearings are fixedly installed on the other end of the eccentric shaft transmission shaft.

5. The spindle of the riveting machine according to claim 4, characterized in that: The eccentric hole transmission shaft sleeves the eccentric shaft transmission shaft therein, and the eccentric hole transmission shaft is fixedly connected to the coupling; thereby, the motor power transmission shaft drives the eccentric hole transmission shaft to rotate.

6. The spindle of the riveting machine according to claim 5, characterized in that: Four second needle roller bearings are fixedly mounted on the eccentric hole transmission shaft. The main shaft of the rotary riveting machine also includes an eccentric hole transmission shaft outer seat. The eccentric hole transmission shaft outer seat sleeves the eccentric hole transmission shaft, and the second needle roller bearings are fixedly mounted inside the eccentric hole transmission shaft outer seat, so that the eccentric hole transmission shaft rotates in the eccentric hole transmission shaft outer seat.

7. The spindle of the riveting machine according to claim 6, characterized in that: It also includes a follower, which is fixedly connected to the swing head, and the follower has an internal chamber, and the internal chamber has an opening. The toggle rod extends into the internal chamber, and the toggle rod drives the follower to swing when following the rotation of the pinion, so as to realize the swing of the swing head; the rivet die is inserted and fixed in the swing head, so that the swing head drives the rivet die to swing at the same time.

8. The spindle of the riveting machine according to claim 7, characterized in that: It also includes a connecting piece, which connects the spin riveting die and the toggle rod together, so as to prevent the spin riveting die from being separated from the swing head due to a loose connection with the swing head.

9. The spindle of the riveting machine according to claim 8, characterized in that: It also includes a swing head support cover and a main shaft outer seat, the swing head support cover accommodates the swing head and the follower inside, and part of the rotary riveting mold extends out of the swing head support cover; the main shaft outer seat sleeves the gear set, the eccentric hole transmission shaft outer seat and the motor power transmission shaft outer seat inside, and the swing head support cover and the main shaft outer seat are fixed together by screws.

10. The spindle of the riveting machine according to claim 9, characterized in that: The pinion gear has two opposite sides, one side of the pinion gear is fixedly connected to the eccentric shaft transmission shaft, and the other side of the pinion gear is fixedly connected to the toggle rod, and the toggle rod deviates from the center of the pinion gear.

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