Swing type riveting machine

Abstract

The utility model relates to the technical field of riveting machines, in particular to a swing type riveting machine which comprises a base, a support is fixed on the base, the support is hollow, air bearings are arranged at the two ends of the support, and an impact rod penetrating in the axial direction is arranged in the support. A first motor and a second motor are fixed above the base, a gear is fixed to the output end of the second motor and meshed with a rotating sleeve, and the rotating sleeve is in spline connection to the end, away from the rubber pad, of the impact rod. The outer side of the crank is rotationally connected with a connecting rod; the connecting rod is hinged to a rocker; a spring piece group is fixed at the bottom of the rocker; a swinging block is hinged to the bottom end of the spring piece group; through the arrangement of the first motor and the crank rocker mechanism, swing impact can be performed while the impact head is rotated so as to perform riveting, and the first motor and the second motor can be adjusted separately, so that the frequency of the swing assembly is coordinated with the rotating speed of the motors, and the impact effect is improved.

Description

Technical Field

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

[0002] Rivets are widely used in various industries of machinery. Traditional riveting machines mostly use compressed air as power, or use an electric motor to generate compressed air, which then drives a piston to generate the mounting force.

[0003] However, the following problems exist in the current working process: 1. Repeated hammering results in high temperature; 2. Hammering the same position causes rivet to shift; 3. Impact rod impact and recoil cause fatigue damage to the metal of the connecting structure, creating a hazard. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a swing riveting machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a swing riveting machine, including a base, a bracket fixed on the base, the bracket being hollow, with air bearings at both ends, and a rubber pad and a disc spring respectively fixed at both ends of the hollow cavity in the bracket; an axially penetrating impact rod is provided inside the bracket, with a protruding limiting block in the middle of the impact rod, the limiting block being restricted by the rubber pad and the disc spring, and an impact head fixed at one end of the impact rod near the rubber pad;

[0006] The axial direction of the impact rod is limited by a rubber pad and a disc spring, and its radial direction is limited by an air bearing.

[0007] A first motor and a second motor are fixed above the base. A gear is fixed to the output end of the second motor. The gear meshes with a rotating sleeve. The rotating sleeve is splinedly connected to the end of the impact rod away from the rubber pad. A vertical plate is fixed to the upper surface of the base. The first motor is fixed to the upper part of the vertical plate.

[0008] The first motor output shaft is perpendicular to the impact rod. The output shaft is keyed to a crank, which is eccentrically positioned relative to the output shaft. A connecting rod is rotatably connected to the outer side of the crank. A rocker arm is hinged to the connecting rod. The top end of the rocker arm is hinged to a fixed block on the upper part of the upright plate via a pin. A spring plate assembly is fixed to the bottom of the rocker arm. A swing block is hinged to the bottom end of the spring plate assembly. A bearing assembly is hinged to the swing block. The bearing assembly is rotatably connected to the impact rod.

[0009] As a further preferred embodiment of this utility model, the impact head is threadedly connected to the impact rod, and the impact head extends into one end of the impact rod and is fixed by a cotter pin to prevent rotation, thus avoiding the impact head from shifting during impact and causing a decrease in impact effect. At the same time, the impact head is easy to replace, reducing economic losses.

[0010] As a further preferred embodiment of this utility model, the bracket has an air inlet and an exhaust outlet on its front and rear sides, respectively. Compressed air is introduced through the air inlet, enters the cavity of the bracket, flows between the impact rod and the air bearing, and is discharged through the exhaust outlet, so as to achieve lubrication of the air bearing through the provision of compressed air.

[0011] As a further preferred embodiment of this invention, the front part of the impact head is in the shape of a straight line, which reduces the force-bearing surface and increases the impact stress.

[0012] As a further preferred embodiment of this utility model, the bottom of the base is provided with a dovetail groove, which is slidably connected to the slide below, serving to fix and connect other components, and at the same time to control axial feed.

[0013] As a further preferred embodiment of this utility model, the spring sheet assembly is composed of multiple spring sheets with a thickness of 0.9-1.1mm bonded together. By setting multiple spring sheets, safety is ensured while reducing metal fatigue caused by impact and extending service life.

[0014] As a further preferred embodiment of this utility model, a counterweight is fixed on the side of the crank shaft away from the eccentric end of the crank. The counterweight balances the bending damage to the output shaft caused by the eccentric rotation of the crank, thereby extending the service life of the device.

[0015] Technical effects and advantages of the utility model:

[0016] 1. By using air bearings, friction is reduced and heat dissipation is enhanced. The air film can also remove the heat generated by friction and reduce the heat of the impact head through heat transfer, thus extending its service life.

[0017] 2. By incorporating a second motor, the impact rod rotates simultaneously upon impact, allowing the impact force to be distributed more evenly across the rivet, thus improving the impact effect. This combined motion helps to better complete the riveting task, ensuring a uniform impact and preventing the rivet from bending or shifting.

[0018] 3. The use of disc springs and rubber pads improves the limiting effect while reducing vibration caused by impact. The use of multiple spring plates also enhances the safety of the connection.

[0019] 4. The design of the first motor and crank rocker mechanism enables the rotating impact head to perform swing impact for riveting, reducing reliance on manual labor. The first and second motors can be adjusted separately to coordinate the frequency of the swing component with the motor speed, thereby improving the impact effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a swing-type riveting machine according to the present invention.

[0021] Figure 2 This is a schematic diagram of the spring plate assembly in this utility model.

[0022] Figure 3 This is a schematic diagram showing the positions of the rotating sleeve and the crank in this utility model.

[0023] Figure 4 This is a top view of the present invention excluding the crank and spring plate.

[0024] Figure 5 This is a schematic diagram of the crank mechanism in this utility model.

[0025] The attached diagram is labeled as follows: 1. Bracket; 2. Rubber pad; 3. Disc spring; 4. Output shaft; 5. Connecting rod; 6. Rocker arm; 7. Spring plate assembly; 8. Air bearing; 9. Impact rod; 10. Cotter pin; 11. Impact head; 12. Swing block; 13. Rotating sleeve; 14. Fixing block; 15. Pin; 16. Gear; 17. Slide table; 18. Crank; 19. First motor; 20. Second motor; 21. Air inlet; 22. Exhaust outlet; 23. Base; 24. Counterweight. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] See appendix Figure 1-5As shown, a swing-type riveting machine includes a base 23, on which a bracket 1 is fixed. The bracket 1 is hollow and has air bearings at both ends. A rubber pad 2 and a disc spring 3 are respectively fixed at both ends of the hollow cavity of the bracket 1. An axially penetrating impact rod 8 and an air bearing 9 are provided inside the bracket 1. The impact rod 8 and the air bearing 9 have a protruding limiting block in the middle. The limiting block is restricted by the rubber pad 2 and the disc spring 3. An impact head 11 is fixed at one end of the impact rod 8 and the air bearing 9 near the rubber pad 2. The axial direction of the impact rod 8 and the air bearing 9 is limited by the rubber pad 2 and the disc spring 3, and its radial direction is limited by the air bearing.

[0028] A first motor 19 and a second motor 20 are fixed above the base 23. A gear 16 is fixed to the output end of the second motor 20. The gear 16 meshes with a rotating sleeve 13. The rotating sleeve 13 is splined to the impact rod 8. An air bearing 9 is located away from the rubber pad 2. A vertical plate is fixed to the upper surface of the base 23. The first motor 19 is fixed to the upper part of the vertical plate.

[0029] During the operation of this utility model, the second motor 20 drives the gear 16 to rotate, which in turn drives the rotating sleeve 13, causing the impact rod 8 and the air bearing 9 to rotate.

[0030] The first motor 19 has an output shaft 4 perpendicular to the impact rod 8; an air bearing 9; a crank 18 is keyed to the output shaft 4; the crank 18 is eccentrically positioned relative to the output shaft 4; a connecting rod 5 is rotatably connected to the outside of the crank 18 via a bearing; a rocker arm 6 is hinged to the connecting rod 5; the top of the rocker arm 6 is hinged to a fixing block 14 on the upper part of the upright plate via a pin 15; a spring plate assembly 7 is fixed to the bottom of the rocker arm 6; a swing block 12 is hinged to the bottom end of the spring plate assembly 7; a bearing assembly is hinged to the swing block 12; and the bearing assembly is rotatably connected to the impact rod 8; an air bearing 9.

[0031] In the operation of this utility model, a crank 18 is mounted on an output shaft 4 driven by a first motor 19. The center of the output shaft 4 is point A, and point B of the crank 18 is 10mm off-center from point A. A deep groove ball bearing is mounted on the outside of the crank 18, and a connecting rod 5 is mounted on the outside of the bearing. The connecting rod 5 is connected to the rocker arm 6 at point C by a pin. The rocker arm 6 swings. A spring plate assembly 7, composed of five 1mm thick spring plates, is connected below the rocker arm 6. The spring plate assembly 7 is connected to the swing block 12 via a pin 15. The swing block 12 is connected to the impact rod 8 and air bearing 9 at point D via the pin 15 and a bearing. The reciprocating impact of the air bearing 9 on the impact rod 8 is achieved through the rotation and reciprocating motion of the swing block 12. The rotational connection between the swing block 12 and the impact rod 8 and air bearing 9 ensures that the impact rod 8 is achieved during the reciprocating motion. The air bearing 9 is rotatable.

[0032] like Figure 1 and 4 As shown, in the operation of this utility model, the impact head 11 is threadedly connected to the impact rod 8 and the air bearing 9. The impact head 11 is hardened and extends into one end of the impact rod 8 and the air bearing 9. It is fixed by a cotter pin 10 to prevent rotation and avoid the impact head 11 from shifting during impact, which would reduce the impact effect. At the same time, the impact head 11 is designed to facilitate replacement and reduce economic losses. The front part of the impact head 11 is in the shape of a straight line, which reduces the force-bearing surface and increases the impact stress. In the operation of this utility model, after the impact head 11 is deformed by impact, the impact force will shift, resulting in a decrease in the impact effect. It can be replaced by removing the cotter pin 10 and disconnecting the threaded connection.

[0033] like Figure 1 and 4 As shown, during the operation of this utility model, the front and rear sides of the bracket 1 are respectively provided with an air inlet 21 and an exhaust outlet 22. Compressed air is introduced through the air inlet 21, enters the cavity of the bracket 1, flows to the impact rod 8, between the air bearing 9 and the air bearing, and is discharged through the exhaust outlet 22, so as to achieve lubrication of the air bearing through the setting of compressed air.

[0034] like Figure 1-3 As shown, during the operation of this utility model, the bottom of the base 23 is provided with a dovetail groove, which is slidably connected to the slide table 17 below, serving to fix and connect other components, and at the same time to control the axial feed.

[0035] like Figure 1 As shown, during the operation of this utility model, the spring sheet group 7 is composed of multiple spring sheets with a thickness of 0.9-1.1mm bonded together. By setting multiple spring sheets, safety is ensured while reducing metal fatigue caused by impact and extending service life.

[0036] like Figure 5 As shown, during the operation of this utility model, a counterweight 24 is fixed on the side of the crank 18 shaft away from the eccentric end of the crank 18. The counterweight 24 balances the bending damage to the output shaft 4 caused by the crank 18 during eccentric rotation, thus extending the service life of the device.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A swing-type riveting machine, comprising a base, wherein a bracket is fixed on the base, characterized in that: The bracket is hollow and has air bearings at both ends. Rubber pads and disc springs are fixed at both ends of the hollow cavity in the middle of the bracket. An axially penetrating impact rod is provided inside the bracket. A protruding limiting block is provided in the middle of the impact rod. The limiting block is restricted by the rubber pads and disc springs. An impact head is fixed at the end of the impact rod near the rubber pad. A first motor and a second motor are fixed above the base. A gear is fixed to the output end of the second motor. The gear meshes with a rotating sleeve. The rotating sleeve is splinedly connected to the end of the impact rod away from the rubber pad. A vertical plate is fixed to the upper surface of the base. The first motor is fixed to the upper part of the vertical plate. The first motor output shaft is perpendicular to the impact rod. The output shaft is keyed to a crank, which is eccentrically positioned relative to the output shaft. A connecting rod is rotatably connected to the outer side of the crank. A rocker arm is hinged to the connecting rod. The top end of the rocker arm is hinged to a fixed block on the upper part of the upright plate via a pin. A spring plate assembly is fixed to the bottom of the rocker arm. A swing block is hinged to the bottom end of the spring plate assembly. A bearing assembly is hinged to the swing block. The bearing assembly is rotatably connected to the impact rod.

2. The swing riveting machine according to claim 1, characterized in that: the impact head is threadedly connected to the impact rod, the impact head extends into one end of the impact rod, and is fixed to prevent rotation by passing through a cotter pin.

3. A swing riveting machine according to claim 1, characterized in that: an air inlet and an exhaust outlet are respectively provided on the front and rear sides of the bracket, compressed air is introduced through the air inlet, the compressed air enters the cavity of the bracket, flows between the impact rod and the air bearing, and is discharged through the exhaust outlet.

4. The swing riveting machine according to claim 1, characterized in that: the front part of the impact head is in the shape of a straight line.

5. A swing riveting machine according to claim 1, characterized in that: the bottom of the base is provided with a dovetail groove, which is slidably connected to the slide below.

6. The swing riveting machine according to claim 1, characterized in that: the spring sheet group is composed of multiple spring sheets with a thickness of 0.9-1.1mm bonded together.

7. A swing riveting machine according to claim 1, characterized in that: a counterweight is fixed on the side of the crank shaft away from the eccentric end of the crank.

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