An improved rotary riveting machine

Abstract

The utility model discloses an improved rotary riveting machine, comprising a frame, and a lifting module and a rotating module arranged on the frame, the lifting module comprising a lifting frame, a nut, a screw and a first motor, the lifting frame is connected to the frame for sliding up and down, the nut is arranged on the lifting frame, the screw is threadedly connected to the nut, the upper end of the screw is connected to the main shaft of the first motor, the rotating module is arranged on the lifting frame, the rotating module comprises a rotary riveting head, a rotating shaft, a first gear, a second gear and a second motor, the rotating shaft is rotatably connected to the lifting frame, the central axis of the rotating shaft is coaxially arranged with the central axis of the screw, the lower end of the rotating shaft is connected to the rotary riveting head, the upper end of the rotating shaft is connected to the first gear, the second gear is connected to the main shaft of the second motor, the second gear is transmission-connected to the first gear, and the second motor can drive the rotating shaft to rotate. The utility model adopts a lifting module of a screw + motor, and the screw can drive the rotating module to move downward steadily and uniformly, so that the rivet is deformed evenly and the rotary riveting effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting equipment, in particular to an improved rotary riveting machine. Background Art

[0002] Riveting is a process of connecting and fixing two workpieces by squeezing rivets to deform them. Rotary riveting is one of the riveting processes and is usually implemented using a rotary riveting mechanism. The traditional rotary riveting mechanism mainly includes a frame and a lifting module and a rotating module arranged on the frame. The lifting module mainly uses an air cylinder or an oil cylinder. The rotating module mainly includes a rotary rivet head, a pressure rod and a motor. The pressure rod is installed on the rotary rivet head, and the rotary rivet head is driven by the motor to rotate. The rotary rivet head drives the pressure rod to rotate, and under the drive of the air cylinder / oil cylinder, the pressure rod makes a conical movement around the rivet and presses down the rivet, thereby flattening the rivet to complete the rotary riveting operation.

[0003] However, since the air cylinder / oil cylinder drives the rotating module to move downward at a too fast speed, the impact force of the riveting head on the rivet is too large in a short period of time, resulting in uneven deformation of the rivet and poor riveting effect. Utility Model Content

[0004] The utility model aims at the defects of the prior art and provides an improved rotary riveting machine, which adopts a lifting module of a screw rod + a motor. The screw rod can drive the rotating module to move downward steadily and uniformly, so as to avoid excessive impact force of the rotary riveting head on the rivet in a short time, so that the rivet is deformed evenly and the rotary riveting effect is better.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An improved rotary riveting machine comprises a frame, and a lifting module and a rotating module arranged on the frame, the lifting module comprising a lifting frame, a nut, a screw and a first motor, the lifting frame is slidably connected to the frame up and down, the nut is arranged on the lifting frame, the screw is threadedly connected to the nut, the upper end of the screw is connected to the main shaft of the first motor, the rotating module is arranged on the lifting frame, the rotating module comprises a rotary rivet head, a rotating shaft, a first gear, a second gear and a second motor, the rotating shaft is rotatably connected to the lifting frame, the central axis of the rotating shaft is coaxially arranged with the central axis of the screw, the lower end of the rotating shaft is connected to the rotary rivet head, the upper end of the rotating shaft is connected to the first gear, the second gear is connected to the main shaft of the second motor, the second motor is installed on the lifting frame, and the second gear is transmission connected to the first gear so that the second motor can drive the rotating shaft to rotate.

[0007] A lifting module consisting of a lifting frame, a nut, a screw and a first motor is provided, the nut is provided on the lifting frame, the screw is threadedly connected to the nut, the upper end of the screw is connected to the main shaft of the first motor, the rotating module is provided on the lifting frame, the rotating module consists of a rotary rivet head, a rotating shaft, a first gear, a second gear and a second motor, the rotating shaft is rotatably connected to the lifting frame, the lower end of the rotating shaft is connected to the rotary rivet head, the upper end of the rotating shaft is connected to the first gear, the second gear is connected to the main shaft of the second motor, the second motor is installed on the lifting frame, and when working, the second motor drives the rotating shaft to rotate through the cooperation of the second gear and the first gear; the first motor drives the screw to rotate, and the screw drives The movable nut moves downward, and the nut drives the lifting frame and the rotating module to move downward synchronously to realize the rotary riveting work. The lifting module of the screw rod + motor is adopted. The screw rod can drive the rotating module to move downward smoothly and uniformly, so as to avoid excessive impact force of the rotary riveting head on the rivet in a short time, so that the rivet is deformed evenly and the rotary riveting effect is better. In addition, the second motor and the rotating shaft are connected by transmission through the cooperation of the first gear and the second gear, so that the second motor can be arranged on one side of the rotating shaft to avoid the space above the rotating shaft, so that the rotating shaft and the screw rod can be coaxially arranged, and the downward pressure output by the screw rod is concentrated on the axis of the rotating shaft, so that the pressure rod on the rotary riveting head is more even when pressing the rivet, thereby further improving the rotary riveting effect.

[0008] As a preferred solution, the frame includes a first connecting seat, a second connecting seat and a plurality of guide rods, the lower ends of the guide rods are connected to the first connecting seat, the second connecting seat is provided with clamping grooves corresponding one to one with the guide rods, and the upper ends of the guide rods are clamped in the clamping grooves.

[0009] As a preferred embodiment, the clamping groove includes a connected clamping hole and a gap, the gap passes through the side surface and the upper and lower surfaces of the second connecting seat, and the second connecting seat is provided with a locking piece, which passes through the gap and can clamp the upper end of the guide rod in the clamping hole.

[0010] As a preferred solution, a threaded hole is provided on one side wall within the gap, and a mounting hole is provided on the other side wall within the gap. The mounting hole passes through the side wall of the second connecting seat in a direction away from the threaded hole. The locking piece is a locking bolt, and the locking bolt is passed through the mounting hole and the threaded hole so that the upper end of the guide rod is clamped in the clamping hole.

[0011] As a preferred solution, a third connecting seat is provided above the second connecting seat, the first motor is installed on the third connecting seat, and the third connecting seat is provided with a support rod corresponding to the guide rod one by one, and the lower end of the support rod is threadedly connected to the upper end of the guide rod.

[0012] As a preferred solution, a first threaded portion is provided at the lower end of the support rod, a second threaded portion is provided at the upper end of the guide rod, and the first threaded portion and the second threaded portion are threadedly connected.

[0013] As a preferred solution, a washer is provided between the support rod and the second connecting seat, the upper surface of the washer abuts against the lower surface of the support rod, and the lower surface of the washer abuts against the upper surface of the second connecting seat.

[0014] As a preferred solution, the cross section of the support rod is polygonal.

[0015] As a preferred solution, the first gear and the second gear are connected via a transmission member.

[0016] As a preferred solution, a support sleeve is provided between the lifting frame and the nut, the lifting frame is connected to the lower end of the support sleeve, the nut is connected to the upper end of the support sleeve, the circumferential outer wall of the nut is fitted with the circumferential inner wall of the support sleeve, and the lower end of the screw rod is inserted into the support sleeve.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, a lifting module consisting of a lifting frame, a nut, a screw rod and a first motor is provided, the nut is arranged on the lifting frame, the screw rod is threadedly connected to the nut, the upper end of the screw rod is connected to the main shaft of the first motor, the rotating module is arranged on the lifting frame, the rotating module consists of a rotary rivet head, a rotating shaft, a first gear, a second gear and a second motor, the rotating shaft is rotatably connected to the lifting frame, the lower end of the rotating shaft is connected to the rotary rivet head, the upper end of the rotating shaft is connected to the first gear, the second gear is connected to the main shaft of the second motor, the second motor is installed on the lifting frame, and when working, the second motor drives the rotating shaft to rotate through the cooperation of the second gear and the first gear. The first motor drives the screw to rotate, and the screw drives the nut to move downward, and the nut drives the lifting frame and the rotating module to move downward synchronously to realize the riveting work. The lifting module of the screw + motor is adopted, and the screw can drive the rotating module to move downward smoothly and uniformly, so as to avoid excessive impact force of the riveting head on the rivet in a short time, so that the rivet is deformed evenly and the riveting effect is better. In addition, the second motor and the rotating shaft are connected by transmission through the cooperation of the first gear and the second gear, so that the second motor can be arranged on one side of the rotating shaft to avoid the space above the rotating shaft, so that the rotating shaft and the screw can be coaxially arranged, and the downward pressure output by the screw is concentrated on the axis of the rotating shaft, so that the pressure rod on the rivet head is more uniform when pressing the rivet, further improving the riveting effect.

[0018] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the assembly structure of an embodiment of the utility model;

[0020] Figure 2 It is an exploded schematic diagram of an embodiment of the utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the frame structure of an embodiment of the utility model;

[0023] Figure 5 It is a schematic cross-sectional view of a frame of an embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the second connecting socket of an embodiment of the utility model.

[0025] Description of the accompanying drawings:

[0026] 10-frame; 11-first connecting seat; 12-second connecting seat; 121-clamping groove; 1211-clamping hole; 1212-gap; 122-mounting hole; 13-guide rod; 131-second threaded portion; 14-third connecting seat; 15-support rod; 151-first threaded portion; 16-washer; 17-outer sleeve; 20-lifting module; 21-lifting frame; 22-nut; 23-screw rod; 24-first motor; 25-support sleeve; 26-inner sleeve; 30-rotating module; 31-spindle head; 311-pressure rod; 32-rotating shaft; 33-first gear; 34-second gear; 35-second motor; 36-transmission member. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] like Figure 1-6As shown, the utility model discloses an improved rotary riveting machine, including a frame 10, and a lifting module 20 and a rotating module 30 arranged on the frame 10, the lifting module 20 includes a lifting frame 21, a nut 22, a screw rod 23 and a first motor 24, the lifting frame 21 is connected to the frame 10 for vertical sliding, the nut 22 is arranged on the lifting frame 21, the screw rod 23 is threadedly connected to the nut 22, and the upper end of the screw rod 23 is connected to the main shaft of the first motor 24.

[0030] The rotating module 30 is arranged on the lifting frame 21, and the rotating module 30 includes a rivet head 31, a rotating shaft 32, a first gear 33, a second gear 34 and a second motor 35. The rotating shaft 32 is rotatably connected to the lifting frame 21, and the central axis of the rotating shaft 32 is coaxially arranged with the central axis of the screw rod 23. The lower end of the rotating shaft 32 is connected to the rivet head 31, and the upper end of the rotating shaft 32 is connected to the first gear 33. The second gear 34 is connected to the main shaft of the second motor 35. The second motor 35 is installed on the lifting frame 21, and the second gear 34 is transmission-connected to the first gear 33 so that the second motor 35 can drive the rotating shaft 32 to rotate. Among them, the rivet head 31 is an existing Changshu technology, so it is not repeated here.

[0031] The frame 10 includes a first connecting seat 11, a second connecting seat 12 and a plurality of guide rods 13, the lower end of the guide rod 13 is connected to the first connecting seat 11, the second connecting seat 12 is provided with a clamping groove 121 corresponding to the guide rod 13, and the upper end of the guide rod 13 is clamped in the clamping groove 121; by setting a frame 10 composed of the first connecting seat 11, the second connecting seat 12 and a plurality of guide rods 13, the clamping groove 121 is provided on the second connecting seat 12, the guide rod 13 is clamped in the clamping groove 121, and is connected in a clamping manner, thereby facilitating the assembly and disassembly of the guide rod 13 and the second connecting seat 12.

[0032] The clamping groove 121 includes a connected clamping hole 1211 and a gap 1212, and the gap 1212 runs through the side surface and the upper and lower surfaces of the second connecting seat 12. The second connecting seat 12 is provided with a locking piece (not shown), and the locking piece is passed through the gap 1212 to clamp the upper end of the guide rod 13 in the clamping hole 1211; by setting the clamping groove 121 composed of the clamping hole 1211 and the gap 1212, the guide rod 13 is clamped in the clamping hole 1211 using the locking piece, which facilitates assembly and disassembly.

[0033] A threaded hole (not shown) is provided on one side wall of the gap 1212, and a mounting hole 122 is provided on the other side wall of the gap 1212. The mounting hole 122 passes through the side wall of the second connecting seat 12 in a direction away from the threaded hole. The locking member is a locking bolt, which is passed through the mounting hole 122 and the threaded hole so that the upper end of the guide rod 13 is clamped in the clamping hole 1211.

[0034] A third connecting seat 14 is provided above the second connecting seat 12, the first motor 24 is installed on the third connecting seat 14, and a support rod 15 corresponding to the guide rod 13 is provided on the third connecting seat 14, and the lower end of the support rod 15 is threadedly connected to the upper end of the guide rod 13; by providing the threaded support rod 15 and the guide rod 13, it is convenient to install the third connecting seat 14 above the second connecting seat 12, and assembly and disassembly are convenient.

[0035] The support rod 15 has a first threaded portion 151 at its lower end, and the guide rod 13 has a second threaded portion 131 at its upper end. The first threaded portion 151 and the second threaded portion 131 are threadedly connected. Exemplarily, the first threaded portion 151 is a threaded column, and the second threaded portion 131 is a threaded groove. It can be understood that the positions of the threaded column and the threaded groove can be interchanged.

[0036] A washer 16 is provided between the support rod 15 and the second connecting seat 12, and the upper surface of the washer 16 abuts against the lower surface of the support rod 15, and the lower surface of the washer 16 abuts against the upper surface of the second connecting seat 12; by providing the washer 16, the upper and lower surfaces of the washer 16 abut against the support rod 15 and the second connecting seat 12 respectively, and the contact area between the washer 16 and the second connecting seat 12 is larger, which can better disperse the gravity of the support rod 15, the second connecting seat 12 and the first motor 24, so that the connection between the third connecting seat 14 and the second connecting seat 12 is more stable.

[0037] The cross-section of the support rod 15 is polygonal. Specifically, the cross-section of the support rod 15 can be a quadrilateral, a pentagon or a hexagon. By adopting the support rod 15 with a polygonal cross-section, workers can directly grasp the support rod 15 with their hands and rotate the support rod 15 forward or reversely to lock or loosen the support rod 15 and the guide rod 13, which is convenient for assembly and disassembly.

[0038] The first gear 33 and the second gear 34 are connected by a transmission member 36. The first gear 33 and the second gear 34 are both synchronous pulleys, and the transmission member 36 is a synchronous belt. It can be understood that the first gear 33 and the second gear 34 can also be bevel gears, and the transmission member 36 can be a transmission shaft.

[0039] A support sleeve 25 is provided between the lifting frame 21 and the nut 22. The lower ends of the lifting frame 21 and the support sleeve 25 are detachably connected by screws, and the upper ends of the nut 22 and the support sleeve 25 are detachably connected by screws. The circumferential outer wall of the nut 22 fits with the circumferential inner wall of the support sleeve 25, and the lower end of the screw rod 23 is inserted into the support sleeve 25. By providing the support sleeve 25, the upper and lower ends of the support sleeve 25 are respectively connected to the nut 22 and the lifting frame 21, and the circumferential outer wall of the nut 22 fits with the circumferential inner wall of the support sleeve 25. The support sleeve 25 can improve the stability of the nut 22, so that when the screw rod 23 rotates, the nut 22 can drive the entire lifting frame 21 to move up and down more smoothly.

[0040] An outer sleeve 17 is connected to the bottom of the frame 10. Specifically, the outer sleeve 17 is arranged below the first connecting seat 11. An inner sleeve 26 is connected to the bottom of the lifting frame 21. The inner sleeve 26 can be slidably sleeved in the outer sleeve 17 up and down. The rotating shaft 32 can be rotatably penetrated in the inner sleeve 26, and the rotating shaft 32 can move up and down with the inner sleeve 26. The inner sleeve 26 is detachably connected to the lifting frame 21 by screws.

[0041] The working principle of the utility model is as follows: the second motor 35 drives the second gear 34 to rotate, the second gear 34 drives the first gear 33 to rotate through the transmission member 36, the first gear 33 drives the rotating shaft 32 to rotate, the rotating shaft 32 drives the rivet head 31 to rotate, the rivet head 31 drives the pressure rod 311 to rotate (the axis of the pressure rod 311 is not parallel to the axis of the rotating shaft 32), the first motor 24 drives the screw rod 23 to rotate, the screw rod 23 drives the nut 22 to move downward, the nut 22 drives the supporting sleeve 25, the lifting frame 21, the inner sleeve 26 and the rotating module 30 to move downward synchronously, the pressure rod 311 presses the rivet downward, during the rotation of the rivet head 31, the pressure rod 311 makes a conical motion, and the pressure rod 311 crushes and deforms the rivet to rivet the workpiece.

[0042] In summary, the utility model is provided with a lifting module 20 consisting of a lifting frame 21, a nut 22, a screw rod 23 and a first motor 24, the nut 22 is arranged on the lifting frame 21, the screw rod 23 is threadedly connected with the nut 22, the upper end of the screw rod 23 is connected to the main shaft of the first motor 24, the rotating module 30 is arranged on the lifting frame 21, the rotating module 30 is composed of a rotary rivet head 31, a rotating shaft 32, a first gear 33, a second gear 34 and a second motor 35, the rotating shaft 32 is rotatably connected to the lifting frame 21, the lower end of the rotating shaft 32 is connected to the rotary rivet head 31, the upper end of the rotating shaft 32 is connected to the first gear 33, the second gear 34 is connected to the main shaft of the second motor 35, the second motor 35 is installed on the lifting frame 21, and when working, the second motor 35 drives the rotating shaft 32 to rotate through the cooperation of the second gear 34 and the first gear 33; The first motor 24 drives the screw rod 23 to rotate, and the screw rod 23 drives the nut 22 to move downward. The nut 22 drives the lifting frame 21 and the rotating module 30 to move downward synchronously to realize the riveting work. The lifting module 20 of the screw rod 23 + motor is adopted. The screw rod 23 can drive the rotating module 30 to move downward steadily and at a uniform speed, so as to avoid the impact force of the riveting head 31 on the rivet is too large in a short time, so that the rivet is deformed evenly and the riveting effect is better; in addition, the second motor 35 and the rotating shaft 32 are connected by the first gear 33 and the second gear 34 to realize the transmission connection, so that the second motor 35 can be arranged on one side of the rotating shaft to avoid the space above the rotating shaft 32, so that the rotating shaft 32 and the screw rod 23 can be coaxially arranged, and the downward pressure output by the screw rod 23 is concentrated on the axis of the rotating shaft 32, so that the pressure rod 311 on the riveting head 31 is more uniform when pressing the rivet, and the riveting effect is further improved.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An improved rotary riveting machine, comprising a frame, and a lifting module and a rotating module arranged on the frame, characterized in that: The lifting module includes a lifting frame, a nut, a screw rod and a first motor, the lifting frame is slidably connected to the frame up and down, the nut is arranged on the lifting frame, the screw rod is threadedly connected to the nut, and the upper end of the screw rod is connected to the main shaft of the first motor; The rotating module is arranged on the lifting frame, and the rotating module includes a rivet head, a rotating shaft, a first gear, a second gear and a second motor. The rotating shaft is rotatably connected to the lifting frame, and the central axis of the rotating shaft is coaxially arranged with the central axis of the screw rod. The lower end of the rotating shaft is connected to the rivet head, and the upper end of the rotating shaft is connected to the first gear. The second gear is connected to the main shaft of the second motor. The second motor is installed on the lifting frame, and the second gear is transmission-connected to the first gear so that the second motor can drive the rotating shaft to rotate.

2. The improved riveting machine according to claim 1, characterized in that: The frame includes a first connecting seat, a second connecting seat and a plurality of guide rods, the lower ends of the guide rods are connected to the first connecting seat, the second connecting seat is provided with clamping grooves corresponding to the guide rods one by one, and the upper ends of the guide rods are clamped in the clamping grooves.

3. The improved rotary riveting machine according to claim 2, characterized in that: The clamping groove includes a connected clamping hole and a gap, the gap runs through the side surface and the upper and lower surfaces of the second connecting seat, and the second connecting seat is provided with a locking piece, which is passed through the gap and can clamp the upper end of the guide rod in the clamping hole.

4. The improved riveting machine according to claim 3, characterized in that: A threaded hole is provided on one side wall of the gap, and a mounting hole is provided on the other side wall of the gap. The mounting hole passes through the side wall of the second connecting seat in a direction away from the threaded hole. The locking piece is a locking bolt, which is passed through the mounting hole and the threaded hole so that the upper end of the guide rod is clamped in the clamping hole.

5. The improved riveting machine according to claim 2, characterized in that: A third connection seat is provided above the second connection seat, the first motor is mounted on the third connection seat, and a support rod corresponding to the guide rod is provided on the third connection seat, and the lower end of the support rod is threadedly connected to the upper end of the guide rod.

6. The improved riveting machine according to claim 5, characterized in that: A first threaded portion is disposed at the lower end of the support rod, and a second threaded portion is disposed at the upper end of the guide rod. The first threaded portion and the second threaded portion are threadedly connected.

7. The improved riveting machine according to claim 5, characterized in that: A washer is provided between the support rod and the second connecting seat, the upper surface of the washer abuts against the lower surface of the support rod, and the lower surface of the washer abuts against the upper surface of the second connecting seat.

8. The improved riveting machine according to claim 5, characterized in that: The cross section of the support rod is polygonal.

9. The improved riveting machine according to claim 1, characterized in that: The first gear and the second gear are connected through a transmission member.

10. The improved riveting machine according to any one of claims 1 to 9, characterized in that: A support sleeve is provided between the lifting frame and the nut, the lifting frame is connected to the lower end of the support sleeve, the nut is connected to the upper end of the support sleeve, the circumferential outer wall of the nut is fitted with the circumferential inner wall of the support sleeve, and the lower end of the screw rod is inserted into the support sleeve.

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