CN113000689A

CN113000689A - Riveting jig and riveting device

Info

Publication number: CN113000689A
Application number: CN202110354721.2A
Authority: CN
Inventors: 黄福胜; 郭秋生; 刘仲仁; 杨鑫婷
Original assignee: Guangdong Silver Basis Technology Co ltd
Current assignee: Guangdong Silver Basis Technology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-06-22
Anticipated expiration: 2041-03-31
Also published as: CN113000689B

Abstract

The invention discloses a riveting jig and a riveting device, wherein the riveting jig comprises a bottom plate and a punch. The inside of bottom plate is equipped with the working chamber, the working chamber has the first accent that is used for towards the work piece and is used for the second accent of being connected with the pump machine, the pump machine is used for adjusting pressure in the working chamber. The punch is slidably mounted in the working cavity and can extend out of the working cavity from the first cavity opening so as to be used for punching riveting points on a workpiece. The riveting jig can solve the technical problem that a punch of the riveting jig cannot be adjusted according to riveting points with different heights in the conventional riveting equipment.

Description

Riveting jig and riveting device

Technical Field

The invention relates to the technical field of riveting, in particular to a riveting jig and a riveting device.

Background

In the existing riveting equipment, a punch for punching a riveting point is generally fixedly connected with a punching oil cylinder of a punching machine, and then the riveting point on a workpiece is punched under the driving of the punching oil cylinder, so that the riveting of the workpiece is realized. The punch is driven by the punching oil cylinder to move, the stroke of the punch is relatively fixed, the punch cannot be automatically adjusted according to riveting points with different heights, riveting points at low concave positions are prone to being not in place after punching, riveting points are high in residual height, and subsequent assembly is affected. For the riveting point at the protruding position, the punch head is easy to damage the workpiece during punching, so that the workpiece is unqualified.

The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.

Disclosure of Invention

The invention mainly aims to provide a riveting jig, and aims to solve the technical problem that a punch of the riveting jig cannot be adjusted according to riveting points with different heights in the existing riveting equipment.

In order to achieve the purpose, the riveting jig provided by the invention comprises a bottom plate and a punch. The inside of bottom plate is equipped with the working chamber, the working chamber has the first accent that is used for towards the work piece and is used for the second accent of being connected with the pump machine, the pump machine is used for adjusting pressure in the working chamber. The punch is slidably mounted in the working cavity and can extend out of the working cavity from the first cavity opening so as to be used for punching riveting points on a workpiece.

In one embodiment, the working chamber further comprises a main chamber and a first channel, the main chamber being in communication with the first port through the first channel; the first passage and the main cavity jointly form a stepped cavity structure, and the punch is in a stepped rod-shaped structure and is installed in the stepped cavity structure in an adaptive mode.

In one embodiment, the punch is divided into a first section and a second section along the length direction of the punch, the first section is slidably arranged in the main cavity, and the second section passes through the first channel and extends out of the working cavity; and a sealing element is arranged between the peripheral wall of the first section and the wall of the working cavity.

In one embodiment, the peripheral wall of the first section is provided with an annular groove, and the sealing element is a sealing ring; the sealing ring is arranged in the annular groove and is abutted against the cavity wall of the main cavity.

In one embodiment, the bottom plate includes a mounting plate and a limiting plate fixedly connected, the main cavity is formed on the mounting plate, and the first channel and the first orifice are formed on the limiting plate.

In one embodiment, a second channel is further provided in the mounting plate, and the main chamber is communicated with the second port through the second channel.

In one embodiment, a plurality of main cavities and a plurality of first channels are provided, and the main cavities and the first channels are communicated in a one-to-one correspondence manner; a plurality of the main chambers are all communicated with the second port through the second channel.

In an embodiment, the riveting jig further comprises a pressure plate, and the pressure plate is slidably mounted on one side of the bottom plate with the first cavity opening; and a third channel penetrates through the pressure plate, is arranged corresponding to the first cavity opening and is used for allowing the punch extending out of the working cavity to extend into the third channel.

In an embodiment, the riveting jig further comprises a limiting guide pillar, the limiting guide pillar penetrates through the pressure plate in a sliding manner, one end of the limiting guide pillar is fixedly connected with the bottom plate, and the other end of the limiting guide pillar is in a step-shaped structure and is used for limiting the pressure plate; and/or an elastic piece is further arranged between the bottom plate and the pressure plate, one end of the elastic piece is abutted against the bottom plate, and the other end of the elastic piece is abutted against the pressure plate.

The invention further provides a riveting device which comprises a workbench, a driving piece and a riveting jig. The workbench is used for mounting a workpiece to be riveted, and the driving piece is arranged above the workbench; the riveting jig is connected with the driving piece and driven by the driving piece to be close to and far away from the workbench so as to rivet workpieces on the workbench. The riveting tool includes:

the bottom plate is used for being connected with the driving piece, a working cavity is arranged inside the bottom plate, the working cavity is provided with a first cavity opening used for facing a workpiece and a second cavity opening used for being connected with a pump, and the pump is used for adjusting the pressure in the working cavity; and the number of the first and second groups,

the punch is slidably mounted in the working cavity and extends out of the working cavity from the first cavity opening, and the punch is used for punching riveting points on a workpiece.

When the riveting jig is used, the bottom plate of the riveting jig can be connected with a stamping oil cylinder of a stamping machine, and the riveting jig is driven by the stamping oil cylinder to move towards a workpiece on a workbench. It can be understood that the riveting jig of the invention is provided with the punch head which is slidably arranged in the working cavity of the bottom plate, and when the punch head abuts against the rivet (i.e. the riveting point) on the workpiece, the punch head is pushed reversely by the rivet and slides towards the inside of the working cavity. The distance that the rivet of co-altitude is reverse to promote the drift is different, promptly the drift can adapt to the riveting point of butt co-altitude not.

After the punch is well abutted to the riveting point and does not slide in the working cavity any more, the pressure in the working cavity can be increased through an external pump machine, so that the punch is ensured not to be reversely pushed by the rivet when the bottom plate drives the punch to punch the riveting point. Or the pressure in the working cavity is increased directly through the pump machine, and then the punch is directly pushed to punch the riveting point, so that the riveting of the workpiece is completed.

Therefore, the punch of the riveting jig can be automatically adjusted according to the riveting points with different heights, so that the riveting points can be punched well during punching, the situation that the riveting points are high in residual or damage workpieces is avoided, and the riveting quality of the workpieces is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a riveting apparatus according to an embodiment of the invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of a riveting jig according to an embodiment of the invention;

FIG. 4 is a schematic structural diagram of a bottom plate of the riveting tool of the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a mounting plate in a bottom plate of the riveting jig of the invention;

FIG. 6 is a schematic structural diagram of an embodiment of a limiting plate in a bottom plate of the riveting jig of the invention;

fig. 7 is a schematic structural view of a swaging plate in the riveting jig of the present invention;

fig. 8 is a schematic structural view of a punch in the riveting jig of the invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a riveting apparatus 80, as shown in fig. 1 and 2, the riveting apparatus 80 mainly includes a worktable 81, a driving member 82 and a riveting jig 10. The working table 81 is used for installing a workpiece 100 to be riveted, and a rivet 110 can be pre-installed at a required riveting position on the workpiece 100. Of course, the rivet 110 may be fixed to the table 81 of the press machine, and then the workpiece 100 may be positioned on the table 81 with the rivet site (typically, a riveting hole) on the workpiece 100 facing the rivet 110 in preparation for riveting.

The driving member 82 is disposed above the working table 81, the driving member 82 can be an oil cylinder, an air cylinder, an electric cylinder, or the like, and the driving member 82 is mainly used for being connected to the riveting jig 10, and driving the riveting jig 10 to move and punch the rivet 110 (i.e., the riveting point) on the workpiece 100, so as to rivet the workpiece 100.

In actual riveting, the workpiece 100 to be riveted has an uneven surface due to production errors, local deformation, and the like, and thus the positions of the rivets 110 on the workpiece 100 are different in height. In addition, in some conventional riveting devices 80, the punch is fixedly connected with the driving member, and the movement stroke is relatively fixed. In the case of many rivets 110, one rivet 110 is not reset by a fixed stroke, but a proper stroke is selected to rivet all rivets 110, so that the riveting efficiency is ensured.

This may cause the punch 30 not to be automatically adjusted according to the rivets 110 with different heights, and for the rivet 110 in the low concave position, riveting is easy to be out of place after punching, and the rivet point is left high, which affects subsequent assembly. For the rivet 110 in the protruding position, the punch 30 easily breaks the workpiece 100 at the time of punching, resulting in failure of the workpiece 100.

Therefore, the present invention further provides a riveting jig 10 to solve the above technical problems. It should be noted that the riveting jig 10 of the present invention can be applied to other stamping processes besides the riveting of the workpiece 100.

In an embodiment of the present invention, referring to fig. 1 to 4, the riveting jig 10 includes a bottom plate 20 and a punch 30. The bottom plate 20 is provided with a working chamber 21 inside, and the working chamber 21 has a first opening 211 facing the workpiece 100 and a second opening 212 for connection to a pump for regulating the pressure in the working chamber 21. The punch 30 is slidably mounted in the working chamber 21 and can extend out of the working chamber 21 from the first opening 211 for punching the rivet 110 on the workpiece 100.

The size, material, and forming manner of the bottom plate 20 are not specifically limited, the entire thickness of the bottom plate 20 needs to be enough to provide the working cavity 21 and the mounting punch 30, and the size of the punch 30 can be set during specific design. The working chamber 21 is mainly used for inputting working fluid, working gas, and the like, so that the pressure in the working chamber 21 is adjusted by the input of the working fluid or the working gas. Thus, the pump connected at the second port 212 may be an oil pump, an air pump, or the like, and the pump may be connected to the second port 212 through the oil nipple 90 or the air nipple.

In this embodiment, as shown in fig. 4, the base plate 20 is substantially a square plate and has a working surface 27 and a connecting surface 28 opposite to each other, the working surface 27 faces the workpiece 100 in use, and the first opening 211 may be provided on the working surface 27 so as to face the workpiece 100. And the attachment face 28 may be adapted to be attached to the drive member 82 so as to be driven by the drive member 82 towards or away from the table 81 of the machine tool. For example, a screw hole 281 may be disposed on the connection surface 28, and further connected to the driving member 82 by a screw, so as to ensure the stability of the connection.

The second port 212 may be provided at a side of the base plate 20, and thus the pump may be coupled to the side of the base plate 20 to prevent the pump from interfering with the movement of the base plate 20.

The punch 30 may have a rod-shaped structure, and a limiting structure, such as a limiting step, a limiting protrusion, etc., may be disposed on the punch 30 or in the working chamber 21, so that the punch 30 is slidably mounted in the working chamber 21 while avoiding falling off from the working chamber 21. The punch 30 is mainly used for driving the rivet 110, specifically the punch rivet 110, on the punch workpiece 100 by the driving of the bottom plate 20 or by pressure, so that the rivet 110 is deformed and fixedly connected to the workpiece 100, and riveting between the workpiece 100 and the workpiece 100 or between parts on the workpiece 100 is realized.

In this embodiment, please refer to fig. 3 and 8, when the punch 30 is slidably installed in the working chamber 21, a sealing ring is further disposed between the outer peripheral surface of the punch 30 and the wall of the working chamber 21 to seal the working chamber 21, so as to prevent the working liquid or gas input into the working chamber 21 from leaking to the first cavity opening 211.

In addition, in the present embodiment, as shown in fig. 2 or fig. 8, the end of the punch 30 for the punch rivet 110 is disposed in a spherical shape, so as to prevent the workpiece 100 from being damaged while ensuring the deformation of the punch rivet 110.

In order to avoid the situation that the punch 30 does not abut against the rivet 110, when the length of the punch 30 extending out of the working chamber 21 is set, the length of the punch 30 can satisfy the following conditions: the length of the punch 30 extending may abut to the table 81 without mounting the workpiece 100 and the rivet 110 on the table 81. This prevents the punch 30 from coming into contact with the rivet 110 due to its too short protruding length.

Therefore, the riveting jig 10 of the invention can connect the bottom plate 20 thereof with the stamping oil cylinder of the stamping machine when in use, and move towards the workpiece 100 on the workbench 81 under the driving of the stamping oil cylinder. It can be understood that the riveting jig 10 of the present invention is configured such that the punch 30 is slidably mounted in the working chamber 21 of the base plate 20, and when the punch 30 abuts against the rivet 110 on the workpiece 100, the punch is pushed in the opposite direction by the rivet 110 and slides into the working chamber 21. The distance that the punch 30 is pushed back by the different heights of the rivet 110 is different, i.e., the punch 30 can be adapted to abut the different heights of the rivet 110.

After the punch 30 abuts against the rivet 110 and does not slide into the working chamber 21 any more, the pressure in the working chamber 21 can be increased by an external pump, so as to ensure that the punch 30 is not pushed reversely by the rivet 110 when the bottom plate 20 drives the punch 30 to punch the rivet 110. Or the pressure in the working chamber 21 is directly increased through a pump machine, and then the punch 30 is directly pushed by the larger pressure in the working chamber 21 to punch the rivet 110, so that the riveting of the workpiece 100 is completed.

Therefore, the punch 30 of the riveting jig 10 can be automatically adjusted according to the rivets 110 with different heights, so that the rivets 110 can be punched well during punching, the situation that riveting points are high or the workpieces 100 are damaged is avoided, and the riveting quality of the workpieces 100 is improved.

In an embodiment, please refer to fig. 3 and fig. 4, the working chamber 21 includes a main chamber 213 and a first passage 22, the main chamber 213 communicates with the first chamber opening 211 through the first passage 22, and the first passage 22 and the main chamber 213 together form a stepped cavity structure; the punch 30 is a stepped rod-shaped structure and is adapted to be installed in the stepped cavity structure. Specifically, in this embodiment, the main cavity 213 is a cylindrical cavity, the first passage 22 is a circular passage, a cross section of the main cavity 213 in the radial direction thereof is larger than a cross section of the first passage 22 in the radial direction thereof, and further the main cavity 213 and the first passage 22 can jointly form a stepped cavity structure.

Accordingly, in the present embodiment, as shown in fig. 8, the punch 30 has a stepped circular rod-shaped structure and has a first section 31 having a larger diameter and a second section 32 having a smaller diameter. The first section 31 is slidably mounted within the main chamber 213 and the second section 32 is connected to the first section 31 and extends out of the working chamber 21 through the first passage 22.

It will be appreciated that the stepped configuration also prevents the punch 30 from falling out of the working chamber 21 by providing that the main chamber 213 and the first passage 22 together form a stepped cavity configuration and the punch 30, also of stepped configuration, is fittingly mounted therein such that the punch 30 is not only conveniently slidably mounted within the working chamber 21.

It should be noted that, the fitting of the punch 30 in the stepped cavity means that the outer diameter of the first section 31 of the punch 30 is fitted with the inner diameter of the main cavity 213, the outer diameter of the second section 32 is fitted with the inner diameter of the first passage 22, and the punch 30 can slide in the working cavity 21 after being fitted.

In an embodiment, please refer to fig. 2 and 8, the punch 30 is divided into a first section 31 and a second section 32 along the length direction thereof, the first section 31 is slidably installed in the main cavity 213, and the second section 32 passes through the first passage 22 and extends out of the working cavity 21; a sealing member 40 is provided between the peripheral wall of the first section 31 and the wall of the main chamber 213. It can be understood that the working chamber 21 can be sealed by the sealing member 40, which not only can prevent the fluid input into the working chamber 21 from leaking from the first cavity port 211, but also can effectively exert the function of adjusting the pressure of the input fluid, thereby preventing the pressure in the working chamber 21 from being unable to be adjusted due to the leakage.

In one embodiment, as shown in fig. 8, the outer peripheral wall of the first section 31 is provided with an annular groove 33, and the sealing member 40 is a sealing ring; the sealing ring is mounted in the annular groove 33 and abuts against the wall of the main cavity 213. It will be appreciated that the seal 40, when mounted in the annular recess 33 in the punch 30, may move with the punch 30 to adjust the amount of space sealed within the main chamber 213 and thus the volume and pressure of the fluid within the main chamber 213. And also does not easily fall off the punch 30.

It should be noted that the bottom plate 20 may be a complete plate, and the main cavity 213 and the first channel 22 may be machined on the bottom plate 20 together, and then the unnecessary openings are sealed, so that only the first opening 211 and the second opening 212 are left. Of course. The bottom plate 20 may also be formed by splicing a plurality of plates, so that the main cavity 213 and the first channel 22 may also be formed on different plates, and then the main cavity 213 and the first channel 22 are communicated by splicing the plates.

For example, in one embodiment, as shown in fig. 4 to 6, the bottom plate 20 includes a mounting plate 23 and a retainer plate 24 fixedly connected, the main cavity 213 is formed on the mounting plate 23, and the first channel 22 and the first cavity opening 211 are formed on the retainer plate 24. Specifically, in the present embodiment, the main cavity 213 is directly formed by notching the surface of the mounting plate 23, the first channel 22 directly penetrates the stopper plate 24, and one opening of the first channel 22 is the first cavity opening 211. It will be appreciated that this arrangement makes the machining of the main cavity 213 and the first passage 22 easier and more convenient, and the assembly and retention of the punch 30 quicker.

In one embodiment, as shown in fig. 5, a second channel 25 is further disposed in the mounting plate 23, and the main cavity 213 communicates with the second cavity opening 212 through the second channel 25. Specifically, in the present embodiment, the second channel 25 is formed by punching from the side surface of the mounting plate 23, and then the bottom surface of the main chamber 213 is communicated with the second channel 25 through the punching. This makes the entire mounting plate 23 simpler to manufacture.

In an embodiment, as shown in fig. 5, a plurality of main cavities 213 and a plurality of first channels 22 are provided, and the plurality of main cavities 213 and the plurality of first channels 22 are in one-to-one correspondence communication; a plurality of the main chambers 213 are each in communication with the second port 212 through the second passage 25. It can be understood that, the riveting jig 10 can be adjusted by only one pump, so that the pressure in the main cavities 213 can be adjusted simultaneously, and the riveting jig 10 can be applied more conveniently.

In an embodiment, please refer to fig. 3 and 7, the riveting jig 10 further includes a pressing plate 50, and the pressing plate 50 is slidably mounted on the side of the bottom plate 20 having the first cavity 211 and can slide relative to the bottom plate 20 along the extending direction of the punch 30. A third channel 51 penetrates through the pressure plate 50, the third channel 51 is arranged corresponding to the first cavity opening 211, and the punch 30 extending out of the working cavity 21 extends into the third channel 51. Specifically, when the bottom plate 20 is driven by the driving element 82 to move toward the workpiece 100, the pressure plate 50 may press the workpiece 100 before the punch 30 abuts against the rivet 110, so as to press the surface of the workpiece 100 more smoothly, thereby ensuring the riveting quality.

Upon compression of the swage plate 50, the rivet 110 on the workpiece 100 extends into the third passage 51 and abuts the punch 30 in the third passage 51. As the base plate 20 continues to move toward the workpiece 100, the rivet 110 will push the punch 30 in a reverse direction such that the punch 30 slides into the working chamber 21 to accommodate rivets 110 of different height positions.

In addition, when the bottom plate 20 is provided with a plurality of main cavities 213 and a plurality of punches 30, a plurality of third passages 51 are also penetrated through the blank holder 50, and each third passage 51 can be penetrated by one punch 30.

In an embodiment, referring to fig. 3 and 7, the riveting jig 10 further includes a limiting guide post 60, the limiting guide post 60 slides through the pressing plate 50, and one end of the limiting guide post 60 is fixedly connected to the bottom plate 20, and the other end of the limiting guide post is in a step-shaped structure and is used for limiting the pressing plate 50, so as to prevent the pressing plate 50 from being separated from the bottom plate 20. Specifically, the pressure plate 50 and the bottom plate 20 are arranged at an interval, so that the pressure plate 50 and the bottom plate 20 can move relatively, and the pressure plate 50 is guided by the guide post when sliding relative to the bottom plate 20, thereby avoiding the condition of sliding deviation.

In an embodiment, please refer to fig. 3 and 7, an elastic member 70 is further disposed between the bottom plate 20 and the pressure plate 50, one end of the elastic member 70 abuts against the bottom plate 20, and the other end abuts against the pressure plate 50. Therefore, after the pressing plate 50 presses against the workpiece 100 and does not move any more, the bottom plate 20 can compress the elastic member 70 and move toward the workpiece 100, so as to drive the punch 30 to move toward the workpiece 100 until the punch 30 is pushed back by the corresponding rivet 110.

In an embodiment, please refer to fig. 3, fig. 6 and fig. 7, the elastic element 70 is a hollow cylindrical spring and is sleeved outside the position-limiting guide post 60. So that the elastic member 70 can be restrained. Of course, the bottom plate 20 may further have a limiting groove 241 at a position abutting against the elastic element 70, and one end of the limiting guide post 60 is fixedly connected to the bottom of the limiting groove 241. Meanwhile, the elastic member 70 extends into the limiting groove 241, and the outer circumference thereof abuts against the inner circumference of the limiting groove 241. Thereby better limiting the position of the elastic member 70.

In addition, as shown in fig. 1, a position of the working table 81 corresponding to the position-limiting guide pillar 60 may be provided with a yielding hole 811 for the position-limiting guide pillar 60 to extend into, so as to avoid the influence of the position-limiting guide pillar 60 on the condition that the pressure plate 50 continues to approach the working table 81.

The riveting apparatus 80 provided by the present invention includes a worktable 81, a driving member 82 and a riveting jig 10, and the specific structure of the riveting jig 10 refers to the above embodiments, and since the riveting apparatus 80 adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a riveting tool which characterized in that includes:

the device comprises a bottom plate, a first pressure sensor, a second pressure sensor and a control unit, wherein a working cavity is arranged in the bottom plate, the working cavity is provided with a first cavity opening facing a workpiece and a second cavity opening connected with a pump, and the pump is used for adjusting the pressure in the working cavity; and the number of the first and second groups,

the punch is slidably mounted in the working cavity and can extend out of the working cavity from the first cavity opening so as to be used for punching riveting points on a workpiece.

2. The riveting jig of claim 1, wherein the working chamber further comprises a main chamber and a first channel, the main chamber being in communication with the first chamber opening through the first channel;

the first passage and the main cavity jointly form a stepped cavity structure, and the punch is in a stepped rod-shaped structure and is installed in the stepped cavity structure in an adaptive mode.

3. The riveting jig of claim 2, wherein the punch is divided into a first section and a second section along the length direction of the punch, the first section is slidably mounted in the main cavity, and the second section passes through the first channel and extends out of the working cavity;

and a sealing element is arranged between the peripheral wall of the first section and the wall of the working cavity.

4. A riveting jig according to claim 3, wherein the peripheral wall of the first section is provided with an annular groove, and the sealing member is a sealing ring; the sealing ring is arranged in the annular groove and is abutted against the cavity wall of the main cavity.

5. The riveting jig of claim 2, wherein the base plate comprises a mounting plate and a limiting plate fixedly connected, the main cavity is formed on the mounting plate, and the first channel and the first orifice are formed on the limiting plate.

6. A riveting jig according to claim 5, wherein a second channel is provided in the mounting plate, and the main chamber is in communication with the second cavity via the second channel.

7. The riveting jig according to claim 6, wherein a plurality of the main cavities and the first channels are provided, and the plurality of the main cavities and the plurality of the first channels are communicated in a one-to-one correspondence; a plurality of the main chambers are all communicated with the second port through the second channel.

8. The riveting jig of any one of claims 1-7, further comprising a swage plate slidably mounted on the side of the base plate having the first cavity;

and a third channel penetrates through the pressure plate, is arranged corresponding to the first cavity opening and is used for allowing the punch extending out of the working cavity to extend into the third channel.

9. The riveting jig according to claim 8, further comprising a limiting guide post which slides through the swaging plate and has one end fixedly connected to the bottom plate and the other end having a step-like structure for limiting the swaging plate;

and/or an elastic piece is further arranged between the bottom plate and the pressure plate, one end of the elastic piece is abutted against the bottom plate, and the other end of the elastic piece is abutted against the pressure plate.

10. A riveting apparatus, comprising:

the workbench is used for installing a workpiece to be riveted;

the driving piece is arranged above the workbench; and the number of the first and second groups,

the riveting jig of any one of claims 1 to 9, connected to the drive member and driven by the drive member to move closer to and away from the worktable for riveting a workpiece on the worktable.