CN112872283A

CN112872283A - Riveting tool

Info

Publication number: CN112872283A
Application number: CN202110219092.2A
Authority: CN
Inventors: 宁肃远; 宁肃安
Original assignee: Shanghai Weining Trenchless Technical Service Co ltd
Current assignee: Shanghai Weining Trenchless Technical Service Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-06-01

Abstract

The invention discloses a riveting tool, which comprises a base and a section bar, wherein the lower end of the section bar is fixed on four corners of the base, the upper end of the section bar is fixed on four corners of a bedplate, two U-shaped supporting plates are respectively clamped on the front side and the rear side of the bedplate, two frame-shaped cover plates are fixed on the U-shaped supporting plates and can slide towards two sides along the bedplate, the upper end of an oil cylinder rod of an oil cylinder is in threaded connection with the connecting sleeves, a fixing nut is added for preventing looseness, a mandrel is arranged on a mandrel lower backing plate, four second through holes are uniformly distributed on the mandrel, four positioning pins capable of moving up and down are arranged in the second through holes, and four springs are arranged below the positioning pins. The riveting tool has the advantages that the process of riveting the nut is created, riveting is realized under the condition that the positioning of the clamp is not removed, the riveting nut is guaranteed not to shift in the riveting process, the riveting precision is improved, the rejection rate is greatly reduced, and the riveting efficiency is improved.

Description

Riveting tool

Technical Field

The invention relates to the technical field of riveting, in particular to a riveting tool.

Background

Riveting is generally a method of joining a plurality of parts by upsetting a stem in a rivet hole of the part and forming a head using axial force. The riveting nut is characterized in that four stainless steel nuts with cylindrical shapes and fine teeth are pressed into four holes of a workpiece gauge stand by external force, and the hole diameter of the gauge stand is smaller than the outer diameter of the nut. In the former riveting, a clamp is used for accurately positioning a nut above a hole, and then the clamp is removed and pressure is applied for riveting. However, during the process of removing the clamp, the nut is easily touched, so that the nut is displaced; the clamp does not touch the nut, and the nut is easy to deflect at the moment of riveting, so that the workpiece is damaged, and the rejection rate is very high. But cannot be riveted without removing the clamp. Therefore, a riveting tool is designed.

Disclosure of Invention

The invention aims to provide a riveting tool to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a riveting tool comprises a base and supporting rods, wherein the supporting rods are fixedly connected to four corners of the upper end of the base, a limiting plate is fixedly connected to the upper end of the supporting rod, a first through hole is formed in the middle of the limiting plate, joint rods are fixedly connected to four corners of the upper end of the limiting plate, a table plate is fixedly connected to the upper end of the joint rods, a third through hole is formed in the middle of the table plate, U-shaped supporting plates are slidably sleeved at four corners of the table plate, frame-shaped cover plates are fixedly connected to the upper ends of two adjacent U-shaped supporting plates and are rectangular, arc-shaped grooves are formed in the middle of the side faces, close to each other, of the two frame-shaped cover plates, the two arc-shaped grooves are arranged in a mirror image mode, an oil cylinder is arranged in the middle of the base, an oil cylinder rod is arranged above, the improved structure of the mandrel is characterized in that a fixing nut is connected to the lead screw in a threaded manner and located below the connecting sleeve, a mandrel lower base plate is fixedly connected to the connecting sleeve, a mandrel is fixedly connected to the upper end of the mandrel lower base plate, the mandrel penetrates through a third through hole in the middle of the platen, a fixing shaft is coaxially arranged in the middle of the mandrel, a plurality of second through holes which are annularly arranged are formed in the mandrel, a spring is arranged at the inner bottom end of each second through hole, and a positioning pin is connected to the upper end of the spring.

Preferably, the external thread of the fixed connection position of the screw rod and the oil cylinder rod is connected with a locking nut.

Preferably, the grooves on the side surfaces of the U-shaped supporting plates are movably clamped into the side surfaces of the bedplate, the height of the grooves on the side surfaces of the U-shaped supporting plates is the same as the thickness of the bedplate, and the four U-shaped supporting plates are divided into two groups which are sleeved on the two long side edges of the bedplate in a sliding manner.

Preferably, limiting devices are fixedly connected to two short side edges of the bedplate, the limiting devices are cylindrical, and the limiting devices are fixedly connected to four corners of the bedplate.

Preferably, the height of the frame-shaped cover plate is higher than that of the mandrel, and the side surfaces, far away from each other, of the frame-shaped cover plate are fixedly connected with a handle.

Preferably, the maximum diameter of the positioning pin is smaller than the diameter of the second through hole, and the positioning pin and the second through hole are coaxially arranged.

Preferably, a plurality of annular steps are arranged at the upper end of the positioning pin, the diameter of each annular step is gradually increased from top to bottom, a limiting ring is fixedly connected to the bottom of the positioning pin, and a vent groove is formed in the side face of the limiting ring.

Preferably, the inner diameter of the third through hole is larger than the outer diameter of the mandrel.

Preferably, the mounting panel is fixedly connected with the upper end of the connecting sleeve, the mounting panel is annular, the side face, away from the mounting panel, of one end of the connecting sleeve is provided with a taking groove, an internal thread is arranged inside the connecting sleeve, and the internal thread is matched with the external thread of the screw rod.

Compared with the prior art, the invention has the beneficial effects that: according to the riveting tool, the frame-shaped cover plates are poked to two sides during riveting, four holes of the workpiece gauge stand are respectively sleeved on the upper portions of four positioning pins, the top ends of the positioning pins are higher than the gauge stand, the riveting nuts are installed, the two frame-shaped cover plates are poked to the middle, the oil cylinder is started to ascend to complete riveting, the process of riveting the nuts is innovated, riveting is achieved under the condition that the positioning of the clamp is not removed, the riveting nuts cannot shift in the riveting process, the riveting precision is improved, the rejection rate is greatly reduced, the riveting efficiency is improved, the yield is close to 100%, a die mandrel descends after riveting is completed, the positioning pins automatically pop out, and the next time of riveting can be carried out, and the screw rod and the connecting.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an elevational, partial cross-sectional view of the present invention;

FIG. 3 is a side partial cross-sectional view of the present invention;

FIG. 4 is a schematic perspective view of a locating pin according to the present invention;

FIG. 5 is a schematic perspective view of the connecting sleeve of the present invention

Fig. 6 is a perspective view of the mandrel of the present invention.

In the figure: the base 1, the bracing piece 2, the limiting plate 3, the hydro-cylinder 4, the hydro-cylinder pole 5, lock nut 6, the lead screw 7, fixation nut 8, the adapter sleeve 9, mounting panel 91, take groove 92, internal thread 93, spring 10, festival pole 11, first through-hole 12, platen 13, dabber lower bolster 14, dabber 15, second through-hole 151, fixed axle 16, locating pin 17, annular step 171, spacing ring 172, air channel 173, U-shaped backup pad 18, frame shape cover apron 19, arc recess 20, stop device 21, handle 22, third through-hole 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a riveting tool comprises a base 1 and a support rod 2, wherein the support rod 2 is fixedly connected with four corners of the upper end of the base 1, a limit plate 3 is fixedly connected with the upper end of the support rod 2, a first through hole 12 is arranged in the middle of the limit plate 3, section rods 11 are fixedly connected with four corners of the upper end of the limit plate 3, a bedplate 13 is fixedly connected with the upper end of the section rods 11, a third through hole 23 is arranged in the middle of the bedplate 13, U-shaped support plates 18 are sleeved at four corners of the bedplate 13 in a sliding mode, frame-shaped cover plates 19 are fixedly connected with the upper ends of two adjacent U-shaped support plates 18, the frame-shaped cover plates 19 are rectangular, arc-shaped grooves 20 are arranged in the middle of the side faces, close, the two frame-shaped cover plates 19 can be moved to be close to each other, and the U-shaped support plate 18 is driven to slide on the side surface of the bedplate 13, so that the arc-shaped grooves 20 on the two frame-shaped cover plates 19 clamp the workpiece;

an oil cylinder 4 is arranged in the middle of the base 1, an oil cylinder rod 5 is arranged above the oil cylinder 4, a lead screw 7 is fixedly connected to the upper end of the oil cylinder rod 5, the lead screw 7 penetrates through a first through hole 12, a connecting sleeve 9 is connected to the upper end of the lead screw 7 in a threaded manner, a fixing nut 8 is connected to the lead screw 7 in a threaded manner, the fixing nut 8 is positioned below the connecting sleeve 9, a mandrel lower cushion plate 14 is fixedly connected to the upper end of the connecting sleeve 9, a mandrel 15 is fixedly connected to the upper end of the mandrel lower cushion plate 14, the oil cylinder 4 is externally connected with a power supply and a control switch through a power supply line, after the oil cylinder 4 is started, the oil cylinder rod 5 can drive the lead screw 7 to do linear motion in the vertical direction, the mandrel lower cushion plate 14 moves along with the lead screw 7 at the moment, the upper end of the lead screw 7 is connected to the inside of the connecting sleeve, thereby changing the height of the mandrel 15, and after being adjusted to a proper height, the mandrel is locked and fixed by the fixing nut 8;

the mandrel 15 penetrates through a third through hole 23 in the middle of the platen 13, a fixed shaft 16 is coaxially arranged in the middle of the mandrel 15, and the inner diameter of the third through hole 23 is larger than the outer diameter of the mandrel 15, so that when the mandrel 15 makes linear motion in the third through hole 23, the radius of the fixed shaft 16 on the mandrel 15 is smaller than that of the mandrel 15 and is used for fixing a workpiece;

the mandrel 15 is provided with a plurality of second through holes 151 which are annularly arranged, the bottom end of each second through hole 151 is provided with a spring 10, the upper end of each spring 10 is connected with a positioning pin 17, determining the position of the positioning pin 17 according to the position of the workpiece needing to be riveted with the nut, determining the position of the positioning pin 17, the riveting nut is placed on the upper end of the positioning pin 17, the workpiece is aligned with the riveting nut and is placed above the mandrel 15, the frame-shaped jacket cover plates 19 are then moved so that the two frame-shaped jacket cover plates 19 clamp the workpiece, at which point the oil cylinders 4 are activated, so that the oil cylinder rod 5 drives the mandrel 15 to move upwards, at the moment, the upper end of the positioning pin 17 and the riveting nut are positioned at the lower end of the frame-shaped cover plate 19, the mandrel 15 moves upwards, so that the frame-shaped cover plate 19 and the mandrel 15 extrude the positioning pin 17 and the riveting nut, the spring 10 performs buffering, and after the riveting nut is riveted into a workpiece, the mandrel 15 moves downwards, and the positioning pin 17 is separated from the workpiece.

Furthermore, a locking nut 6 is connected to the outer portion of the fixed connection portion of the screw rod 7 and the oil cylinder rod 5 through threads, and the locking nut 6 fixes the screw rod 7 and the oil cylinder rod 5 to prevent the screw rod 7 and the oil cylinder rod 5 from being separated.

Furthermore, the grooves on the side surfaces of the U-shaped supporting plates 18 are movably clamped into the side surfaces of the bedplate 13, the height of the grooves on the side surfaces of the U-shaped supporting plates 18 is the same as the thickness of the bedplate 13, the four U-shaped supporting plates 18 are divided into two groups which are slidably sleeved on two long side edges of the bedplate 13, and the U-shaped supporting plates 18 can slide on two sides of the bedplate 13 to drive the frame-shaped cover plates 19 to move.

Further, two short side edges of platen 13 are fixedly connected with stop device 21, and stop device 21 is cylindrical, and stop device 21 fixed connection is in platen 13's four corners department, and the edge of stop device 21 can carry on spacingly to U-shaped backup pad 18, prevents that U-shaped backup pad 18 from breaking away from platen 13.

Furthermore, the height of the frame-shaped cover plate 19 is higher than that of the mandrel 15, the side surfaces of the frame-shaped cover plate 19, which are far away from each other, are fixedly connected with a handle 22, and the handle 22 facilitates the movement of the frame-shaped cover plate 19.

Further, the maximum diameter of the positioning pin 17 is smaller than the diameter of the second through hole 151, and the positioning pin 17 is disposed coaxially with the second through hole 151 so that the positioning pin 17 can move up and down in the second through hole 151.

Further, the upper end of the positioning pin 17 is provided with a plurality of annular steps 171, the diameter of the annular steps 171 is gradually increased from top to bottom, the bottom of the positioning pin 17 is fixedly connected with a limit ring 172, the side face of the limit ring 172 is provided with a vent groove 173, the annular steps 171 adapt to riveting nuts of different sizes, the riveting nuts are limited and fixed, the limit ring 172 fixes the positioning pin 17, and the vent groove 173 reduces air resistance in the up-and-down movement process of the positioning pin 17.

Further, the inner diameter of the third through hole 23 is larger than the outer diameter of the mandrel 15, so that the mandrel 15 can move up and down in the third through hole 23.

Furthermore, the mounting plate 91 is fixedly connected to the upper end of the connecting sleeve 9, the mounting plate 91 is annular, the side face, away from the mounting plate 91, of one end of the connecting sleeve 9 is provided with a taking groove 92, an internal thread 93 is arranged inside the connecting sleeve 9, the internal thread 93 is matched with the external thread of the screw rod 7, the mounting plate 91 facilitates the fixed mounting of the connecting sleeve 9 below the mandrel lower backing plate 14, the taking groove 92 facilitates the movement of the connecting sleeve 9, and the internal thread 93 is used for fixing the screw rod 7.

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

Claims

1. The utility model provides a riveting tools, includes base (1) and bracing piece (2), its characterized in that: the support rods (2) are fixedly connected with four corners of the upper end of the base (1), the upper end of each support rod (2) is fixedly connected with a limiting plate (3), a first through hole (12) is formed in the middle of each limiting plate (3), section rods (11) are fixedly connected with the four corners of the upper end of each limiting plate (3), a table plate (13) is fixedly connected with the upper end of each section rod (11), a third through hole (23) is formed in the middle of each table plate (13), U-shaped support plates (18) are sleeved in the four corners of each table plate (13) in a sliding mode, frame-shaped cover plates (19) are fixedly connected with the upper ends of two adjacent U-shaped support plates (18), each frame-shaped cover plate (19) is rectangular, arc-shaped grooves (20) are formed in the middle of the side faces, close to each other, of the two frame-shaped cover plates (, an oil cylinder rod (5) is arranged above the oil cylinder (4), a lead screw (7) is fixedly connected to the upper end of the oil cylinder rod (5), the lead screw (7) penetrates through a first through hole (12) to be arranged, a connecting sleeve (9) is in threaded connection with the upper end of the lead screw (7), a fixing nut (8) is in threaded connection with the lead screw (7), the fixing nut (8) is located below the connecting sleeve (9), a mandrel lower backing plate (14) is fixedly connected to the upper end of the connecting sleeve (9), a mandrel (15) is fixedly connected to the upper end of the mandrel lower backing plate (14), the mandrel (15) penetrates through a third through hole (23) in the middle of the bedplate (13) to be arranged, a fixing shaft (16) is coaxially arranged in the middle of the mandrel (15), a plurality of second through holes (151) which are arranged in an annular shape are arranged on the mandrel (15), and a, the upper end of the spring (10) is connected with a positioning pin (17).

2. The riveting tool according to claim 1, wherein: and a locking nut (6) is connected with the external thread of the fixed connection part of the screw rod (7) and the oil cylinder rod (5).

3. The riveting tool according to claim 1, wherein: the groove on the side surface of the U-shaped supporting plate (18) is movably clamped into the side surface of the bedplate (13), the height of the groove on the side surface of the U-shaped supporting plate (18) is the same as the thickness of the bedplate (13), and the four U-shaped supporting plates (18) are divided into two groups which are sleeved on two long side edges of the bedplate (13) in a sliding manner.

4. The riveting tool according to claim 1, wherein: limiting devices (21) are fixedly connected to two short side edges of the bedplate (13), the limiting devices (21) are cylindrical, and the limiting devices (21) are fixedly connected to four corners of the bedplate (13).

5. The riveting tool according to claim 1, wherein: the height of the frame-shaped cover plate (19) is higher than that of the mandrel (15), and the side surfaces, far away from each other, of the frame-shaped cover plate (19) are fixedly connected with a handle (22).

6. The riveting tool according to claim 1, wherein: the maximum diameter of the positioning pin (17) is smaller than the diameter of the second through hole (151), and the positioning pin (17) and the second through hole (151) are coaxially arranged.

7. The riveting tool according to claim 1, wherein: the locating pin (17) upper end is provided with a plurality of annular steps (171), the diameter of annular step (171) from last to increasing progressively with this, locating pin (17) bottom fixedly connected with spacing ring (172), spacing ring (172) side is provided with air channel (173).

8. The riveting tool according to claim 1, wherein: the inner diameter of the third through hole (23) is larger than the outer diameter of the mandrel (15).

9. The riveting tool according to claim 1, wherein: adapter sleeve (9) upper end fixedly connected with mounting panel (91), mounting panel (91) are the annular, the one end side that mounting panel (91) were kept away from in adapter sleeve (9) is provided with groove (92) of taking, adapter sleeve (9) inside is provided with internal thread (93), the external screw thread of internal thread (93) and lead screw (7) matches each other.