CN215243926U

CN215243926U - Automatic get and rivet sword and have and get and rivet archives book-binding machine of pressing of function

Info

Publication number: CN215243926U
Application number: CN202120017742.0U
Authority: CN
Inventors: 曹东华; 廖建新
Original assignee: Dongguan Junneng Electronic Technology Co ltd
Current assignee: Dongguan Junneng Electronic Technology Co ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-12-21
Anticipated expiration: 2031-01-06

Abstract

The utility model discloses an automatic get and rivet sword and have and get and rivet archives book-binding machine of riveting of pressure of function, including the cutter body with set up the circular shape cutter that is used for cutting off the riveting nose portion of riveting the pipe at the lower tip of cutter body, cutter body coaxial arrangement has one to be used for inserting the direction location needle of the inner chamber of corresponding riveting pipe when getting to rivet, the lower part protrusion of direction location needle is in the below of cutter, and direction location needle overlaps in the central part in the cross-section of cutter, is provided with annular cartridge clearance between direction location needle and the cutter is coaxial. The automatic riveting knife assembly is arranged on a knife body installation mechanism of a drilling knife clamping mechanism or a cutting riveting device of a press riveting file binding machine, automatic positioning and limiting are carried out through a guide positioning needle of the automatic riveting knife, and a riveting tube head of a riveting tube binding file is cut off through a circular cutter coaxially arranged with the guide positioning needle.

Description

Automatic get and rivet sword and have and get and rivet archives book-binding machine of pressing of function

Technical Field

The utility model belongs to the technical field of the mechanism is demolishd to the riveting pipe of riveting pipe binding file and specifically relates to an automatic get the riveting sword and have the pressure of getting the function of riveting and rivet archives book-binding machine.

Background

The file binding machine is used for binding documents, bills, vouchers and the like, the file binding machine drills a circular binding hole in the edge of the document through a drill, and then the upper end and the lower end of a riveting pipe inserted into the binding hole are hot-pressed and riveted into a riveting pipe head through a hot pressing riveting mechanism so as to achieve riveting pipe binding.

The rivet pipe is taken out in a manual mode of cutting off the rivet pipe, so that the operation is very troublesome, the rivet pipe head of the rivet pipe is tightly attached to the file, the rivet pipe is very difficult to cut off, particularly, the force of cutting tools such as a beauty knife worker is difficult to control, and the file is very easy to cut off.

At present, equipment special for removing the riveting pipe is not available, and the applicant finds that the equipment for removing the riveting pipe still has some technical problems to be solved in the development process, for example, complete concentric coaxiality of a drill and the riveting pipe cannot be ensured, particularly for files with large thickness, the head of the upper riveting pipe of the riveting pipe is often inclined relative to the head of the lower riveting pipe, complete vertical alignment and concentric and coaxial state of the head of the upper riveting pipe cannot be ensured, the drill cannot completely cut off the head of the upper riveting pipe of the riveting pipe, and the situation that the drill cuts the files easily occurs, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic get and rivet sword, simple structure, the cooperation is used in pressing and rivets archives book-binding machine, and is with low costs, the automatic riveting nose of riveting the pipe that cuts off.

The utility model aims at providing a file book-binding machine is riveted to pressure with get and rivet function is equipped with the automation of the riveting nose portion of riveting of automatic cutout riveting pipe and gets the riveting sword, simple structure, convenient to use.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: the automatic rivet taking knife comprises a knife body and a circular cutter which is arranged at the lower end of the knife body and used for cutting off the head of a rivet pipe of the rivet pipe, wherein a guide positioning needle which is used for inserting into an inner cavity of the corresponding rivet pipe when a rivet is taken is coaxially arranged on the knife body, the guide positioning needle is fixed on the knife body or the cutter, the lower part of the guide positioning needle protrudes below the cutter, the guide positioning needle is overlapped with the central part of the cross section of the cutter in the transverse cross section, and an annular insertion gap is formed between the guide positioning needle and the cutter in a coaxial mode.

In a further technical scheme, a guide conical part is arranged at the lower end part of the guide positioning needle, and a cutter body clamping part is arranged at the upper part of the cutter body.

In a further technical scheme, at least the lower part of the guide positioning needle is in a cylindrical shape, at least the lower part of the cutter body is in a cylindrical shape, the outer diameter of the guide positioning needle is not larger than the inner diameter of an inner cavity of the riveting tube, the outer diameter of the guide positioning needle is smaller than the inner diameter of the cutter, and the inner diameter of the cutter is larger than the outer diameter of the riveting tube.

In a further technical scheme, a mounting hole extending along the axis direction of the cutter body and a locking hole transversely arranged are formed in the middle of the cutter body, the locking hole is communicated with the mounting hole, the guide positioning pin is fixedly mounted in the mounting hole, a locking screw is mounted in the locking hole, the inner end part of the locking screw extends into the mounting hole, the inner end part of the locking screw abuts against the upper part of the guide positioning pin or the inner end part of the locking screw abuts against a positioning part arranged on the upper part of the guide positioning pin, so that the guide positioning pin is locked, and the positioning pin and the cutter body can be directly welded or integrated.

In a further technical scheme, the cutter body clamping part comprises a clamping part which is arranged on the side surface of the upper part of the cutter body in a concave-convex mode or an annular cutter body clamping groove which surrounds the outer edge of the cutter body for one circle and is used for clamping a cutter clamping head for mounting a drill cutter or a cutter clamping head for cutting and riveting a device in the file press-riveting binding machine; the mounting hole penetrates through the cutter body up and down.

In a further technical scheme, the cutter body is provided with a mounting hole for accommodating and fixing the guiding and positioning needle, the cutter comprises a circular thin cutter wall extending downwards from the lower part of the cutter body along the axial direction and a circular cutting edge arranged at the lower end part of the cutter wall, a cavity formed by the cutter wall in a surrounding manner forms a cutter chamber, and the inner diameter of the cutter chamber is larger than that of the mounting hole.

In a further technical scheme, the width of the insertion gap is not less than the thickness of the pipe wall of the riveting pipe; the circular cutting edge is obliquely arranged, the inner diameter of the circular cutting edge is gradually reduced from bottom to top, the guide positioning needle penetrates through the cutting knife chamber and extends out to the position below the circular cutting edge, and the guide positioning needle protrudes out of the position below the circular cutting edge.

The upper portion of cutter body is provided with cutter body clamping portion, and cutter body clamping portion is greater than the cutter body, and the cutter body is greater than the guide positioning needle.

The utility model provides a press and rivet archives binding machine with get function of riveting, including the frame with install in the file binding platform of frame, the frame-mount has drilling equipment and rubber tube to press and rivet the device, the rubber tube is pressed and is riveted the device and set up in the top or below of file binding platform, drilling equipment is along vertical direction slidable mounting in the top or below of file binding platform, drilling equipment is provided with the lift actuating mechanism who installs in the frame, the guide post of vertical setting that is fixed in the frame, the transmission is connected in the base of lift actuating mechanism, install the drilling motor at the base, install the drill jig clamping mechanism in the lower part of drilling motor, hollow drill with circular cutting edge and the nipper that sets up in the below of base, base and nipper are respectively slidable mounting in the guide post, the upper portion of drill is provided with drill jig clamping part, including the aforesaid automatic rivet taking sword, the automatic rivet taking sword includes the cutter body, The automatic rivet taking and riveting device comprises a cutter body clamping part arranged on the upper part of the cutter body and a circular cutter arranged at the lower end part of the cutter body, wherein a guide positioning needle is coaxially fixed on the cutter body, the lower part of the guide positioning needle protrudes below the cutter, an annular inserting gap is arranged between the guide positioning needle and the cutter in a coaxial mode, and a drill cutter clamping mechanism selects one cutter body clamping part for installing and fixing an automatic rivet taking cutter or a drill cutter clamping part for installing and fixing a drill cutter.

In a further technical scheme, a drill bit clearance groove or a drill bit clearance hole is formed in the outer side of the paper pressing plate, the cutter body or the cutter is located in the drill bit clearance groove or the drill bit clearance hole in the horizontal projection plane, the outer diameter of the cutter body or the cutter is smaller than that of the drill bit clearance groove or the drill bit clearance hole, at least the outer surface of the cutter is in clearance fit with the drill bit clearance groove or the drill bit clearance hole, and the distance from the lower end part of the cutter to the position downwards exceeding the bottom surface of the paper pressing plate in the cutting and riveting process is larger than the thickness of the head of the riveting pipe.

After the structure is adopted, compared with the prior art, the utility model the advantage that has is: the automatic riveting knife assembly is arranged on a drilling knife clamping mechanism or a cutter body installation mechanism of a cutting and riveting device of a press riveting file binding machine, automatic positioning and limiting are carried out through a guide positioning needle of the automatic riveting knife, and a riveting tube head of a riveting tube binding file is cut off through a circular cutter coaxially arranged with the guide positioning needle.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a press-riveting file binding machine equipped with an automatic rivet taking knife.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of the automatic rivet taking knife.

Fig. 4 is a schematic diagram of the internal structure of the automatic rivet taking knife.

The labels in the figure are:

1 cutter body 11, cutter 12, guide positioning pin 13, insertion gap 14, guide conical part 15, cutter body clamping part 16, mounting hole 17 and locking screw

2 riveting pipe head

3 file binding platform 31 paper pressing plate 32 drill clearance groove

Detailed Description

The utility model provides a press and rivet archives binding machine with get function of riveting, shown in fig. 1 to 4, including automatic get the riveting sword, the frame with install in the file binding platform 3 of frame, the frame-mounted has drilling equipment and rubber tube to press the riveting equipment, the rubber tube is pressed the riveting equipment and is set up in the top or below of file binding platform 3, drilling equipment along vertical direction slidable mounting in the top or below of file binding platform 3, drilling equipment is provided with the lift actuating mechanism who installs in the frame, be fixed in the guide post of the vertical setting of frame, the transmission is connected in the base of lift actuating mechanism, install the drilling motor at the base, install the drilling sword clamping mechanism in the lower part of drilling motor, hollow drilling sword that has circular cutting edge and the nipper 31 of setting in the below of base, base and nipper 31 are respectively slidable mounting in the guide post, the upper portion of drilling sword is provided with drilling sword clamping part.

Wherein, the automatic rivet taking knife comprises a knife body 1, a knife body clamping part 15 arranged at the upper part of the knife body 1, a round cutter 11 arranged at the lower end part of the knife body 1, a rivet tube head part 2 for cutting off a rivet tube, a guide positioning needle 12 coaxially fixed on the knife body 1 and used for inserting into the inner cavity of the corresponding rivet tube when taking rivet, the guide positioning needle 12 fixed on the knife body 1 or the guide positioning needle 12 fixed on the cutter 11, the lower part of the guide positioning needle 12 protruding below the cutter 11, the guide positioning needle 12 overlapping the central part of the section of the cutter 11 in the transverse section, an annular insertion gap 13 arranged between the guide positioning needle 12 and the cutter 11 coaxially, for inserting the tube wall of the rivet tube into the insertion gap 13 when cutting off the rivet tube head part 2, avoiding that the rivet tube head part 2 can not be cut off because the tube wall is abutted against the knife body 1 or the cutter 11, the drill knife clamping part of the knife body clamping part 15 or the drill knife for fixing the automatic rivet taking knife is selected by the drill knife body clamping mechanism, and when the riveting tool is used for riveting or cutting the rivet, the automatic riveting tool is clamped and fixed on the drill tool clamping mechanism. When cutting and riveting, the drilling motor drives the automatic riveting knife to rotate, and meanwhile, the lifting mechanism drives the base to move downwards, so that the automatic riveting knife is driven to move downwards, the automatic riveting knife starts to contact the riveting pipe head part 2 and then continues to move downwards for a set distance, and then the riveting pipe head part 2 is automatically cut off.

Specifically, the lower end part of the guiding and positioning needle 12 is provided with a guiding conical part 14, the guiding conical part enables the guiding and positioning needle 12 to be easily inserted into the inner cavity of the riveting tube, even if the guiding and positioning needle 12 slightly deviates relative to the riveting tube, the guiding and positioning needle 12 can be smoothly inserted into the inner cavity of the riveting tube, the riveting tube and the binding document are pushed by the counterforce, the riveting tube and the guiding and positioning needle 12 are corrected to be in concentric and coaxial position relation, when the cutter body 1 moves downwards towards the binding document, the guiding conical part 14 is firstly inserted into the inner cavity of the riveting tube through the head part 2 of the riveting tube to play a role of positioning and guiding, the riveting tube and the guiding and positioning needle 12 are kept in concentric and coaxial relative position relation, so that the cutter 11 of the cutter body 1 and the riveting tube automatically keep concentric and the cutter body, the cutter 11 of the cutter body 1 can smoothly cut the head part 2 of the riveting tube from the root part of the tube wall, the upper part of the cutter body 1 is provided with a cutter body clamping part 15, the automatic rivet taking knife can be installed on a drill knife clamping mechanism of the press-riveting file binding machine through the knife body clamping portion 15, or the automatic rivet taking knife can be installed on an installation mechanism of the knife body 1 independently provided with the rivet cutting device through the knife body clamping portion 15.

The utility model discloses an automatic get the direction pilot pin of riveting sword and carry out automatic positioning and spacing, cut off the riveting tube head portion 2 of riveting the pipe binding file that binds the riveting that has the riveting pipe through the circular shape cutter with the coaxial setting of direction pilot pin, simple structure realizes the riveting tube head portion 2 of automatic cutout riveting pipe, makes getting of riveting the pipe binding file rivet become simpler, convenient and swift, has improved and has got the rate of accuracy of riveting.

The guide positioning needle 12 is in a cylindrical shape, or only the lower part of the guide positioning needle 12 is in a cylindrical shape; the cutter body 1 is cylindrical, or only the lower part of the cutter body 1 is cylindrical; the external diameter of direction location needle 12 is not more than the internal diameter of the inner chamber of riveting the pipe, makes direction location needle 12 can smoothly insert the inner chamber to the riveting pipe, and the external diameter of direction location needle 12 is less than the internal diameter of cutter 11, and the internal diameter of cutter 11 is greater than the external diameter of riveting the pipe.

The middle part of the cutter body 1 is provided with a mounting hole 16 extending along the axis direction of the cutter body 1 and a locking hole transversely arranged, the locking hole is communicated with the mounting hole 16, the guide positioning needle 12 is fixedly arranged in the mounting hole 16, a locking screw 17 is arranged in the locking hole, the inner end part of the locking screw 17 extends into the mounting hole 16, the inner end part of the locking screw 17 abuts against the upper part of the guide positioning needle 12 or the inner end part of the locking screw 17 abuts against a positioning part arranged on the upper part of the guide positioning needle 12, so that the guide positioning needle 12 is locked.

The cutter body clamping part 15 comprises a clamping part which is arranged on the side surface of the upper part of the cutter body 1 in a concave-convex mode or an annular cutter body clamping groove which surrounds the outer edge of the cutter body 1 for one circle and is used for clamping a cutter clamping head for installing a drill cutter or a cutter clamping head for installing a cutting and riveting device in the press riveting file binding machine; the cutter body clamping part 15 is larger than the cutter body 1, the cutter body 1 is larger than the guiding and positioning needle 12, the cutter body 1 penetrates through the mounting hole 16 from top to bottom, and the cutter body clamping part 15 of the cutter body 1 penetrates through the mounting hole 16 from top to bottom.

The cutter body 1 is provided with a mounting hole 16 for accommodating and fixing the guiding and positioning needle 12, the cutter 11 comprises a circular thin cutter wall extending downwards from the lower part of the cutter body 1 along the axial direction and a circular cutting edge arranged at the lower end part of the cutter wall, a cavity formed by the cutter wall in a surrounding way forms a cutter chamber, and the inner diameter of the cutter chamber is larger than that of the mounting hole 16. The width of the insertion gap 13 is not less than the thickness of the pipe wall of the riveting pipe, and the upper end part of the pipe wall of the riveting pipe can be smoothly inserted into the insertion gap 13; the circular cutting edge is obliquely arranged, the inner diameter of the circular cutting edge gradually decreases from bottom to top, the circular cutting edge plays a role in guiding the upper end part of the pipe wall of the riveting pipe and guiding the upper end part of the pipe wall of the riveting pipe to be smoothly inserted into the insertion gap 13, and when the pipe wall of the riveting pipe is relatively thick or deformed, the circular cutting edge can be used for hard squeezing the upper end part of the pipe wall of the riveting pipe, so that the upper end part of the pipe wall of the riveting pipe is thinned and smoothly inserted into the insertion gap 13, and the head part 2 of the riveting pipe is guaranteed to be smoothly cut off; the guide positioning needle 12 passes through the cutter chamber and extends out to the lower part of the circular cutting edge, and the guide positioning needle 12 protrudes below the circular cutting edge. The guiding and positioning needle 12 has enough length to position the riveting tube and keep the relative position of the head 2 of the riveting tube unchanged in the cutting and riveting process, and the cutter 11 has high structural strength and enough depth for the insertion of the tube wall of the riveting tube, thereby providing an avoidance space with enough depth.

The outer side of the paper pressing plate 31 is provided with a drill clearance groove 32 or a drill clearance hole, at least the cutter 11 is positioned in the drill clearance groove 32 or the drill clearance hole in the horizontal projection plane, the outer surface of the cutter 11 is in clearance fit with the drill clearance groove 32 or the drill clearance hole, the clearance between the outer surface of the cutter 11 and the drill clearance groove 32 or the drill clearance hole is smaller than the width of the rivet pipe head 2, so that the rivet pipe head 2 automatically falls down by pushing the rivet pipe head 2 downwards through the paper pressing plate 31 in the process that the cutter body 1 moves upwards and resets relative to the paper pressing plate 31 after the rivet pipe head 2 is cut off, even if the rivet pipe head 2 is adhered to the lower part of the cutter body 1 in the rivet cutting process, the rivet pipe head 2 can be pushed away from the cutter body 1 downwards through the paper pressing plate 31 to realize automatic rivet removal, meanwhile, the cutter body 1 and the cutter 11 are prevented from impacting the paper pressing plate 31, the guiding and positioning needle 12 is smaller than the drill clearance groove 32 or the drill clearance hole, the outer diameter of the cutter 11 is smaller than the drill clearance groove 32 or the drill clearance hole, the distance that the lower end part of the cutter 11 downwards exceeds the bottom surface of the paper pressing plate 31 in the cutting and riveting process is larger than the thickness of the head part 2 of the riveting pipe, the cutter 11 is prevented from excessively moving downwards relative to the paper pressing plate 31, and the cutter 11 is prevented from cutting and damaging files or impacting the paper pressing plate 31 due to excessive downward displacement.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides an automatic get riveter which characterized in that: the riveting tool comprises a tool body (1) and a circular cutter (11) which is arranged at the lower end part of the tool body (1) and used for cutting off a riveting tube head part (2) of a riveting tube, wherein a guide positioning needle (12) used for inserting into an inner cavity of the corresponding riveting tube when riveting is taken is coaxially arranged on the tool body (1), the guide positioning needle (12) is fixed on the tool body (1) or the cutter (11), the lower part of the guide positioning needle (12) protrudes below the cutter (11), the guide positioning needle (12) is overlapped with the central part of the cross section of the cutter (11) in the transverse cross section, and an annular insertion gap (13) is formed between the guide positioning needle (12) and the cutter (11) in a coaxial mode.

2. The automatic rivet taking knife of claim 1, characterized in that: the lower end part of the guide positioning needle (12) is provided with a guide conical part (14), and the upper part of the cutter body (1) is provided with a cutter body clamping part (15).

3. The automatic rivet taking knife of claim 2, characterized in that: at least the lower part of the guide positioning needle (12) is in a cylindrical shape, at least the lower part of the cutter body (1) is in a cylindrical shape, the outer diameter of the guide positioning needle (12) is not larger than the inner diameter of the inner cavity of the riveting tube, the outer diameter of the guide positioning needle (12) is smaller than the inner diameter of the cutter (11), and the inner diameter of the cutter (11) is larger than the outer diameter of the riveting tube.

4. The automatic rivet taking knife according to claim 3, characterized in that: the cutter body (1) middle part is seted up along mounting hole (16) and the lockhole of horizontal setting that extends of the axle center direction of cutter body (1), lockhole intercommunication mounting hole (16), guide positioning needle (12) fixed mounting is in mounting hole (16), installs locking screw (17) in the lockhole, and the tip stretches into mounting hole (16) in the tip of locking screw (17), and the tip in locking screw (17) supports and supports in the upper portion of guide positioning needle (12) or the tip in locking screw (17) supports and supports in the location portion that sets up on the upper portion of guide positioning needle (12) to realize locking guide positioning needle (12).

5. The automatic rivet taking knife according to claim 4, characterized in that: the cutter body clamping part (15) comprises a clamping part which is arranged on the side surface of the upper part of the cutter body (1) in a concave-convex mode or an annular cutter body clamping groove which surrounds the periphery of the cutter body (1) in a circle and is used for clamping a cutter clamping head for mounting a drilling cutter or a cutter clamping head for cutting and riveting a device in the file press-riveting binding machine; the mounting hole (16) penetrates through the cutter body (1) up and down.

6. The automatic rivet taking knife according to any one of claims 1 to 5, characterized in that: the cutter body (1) is provided with a mounting hole (16) for containing and fixing the guide positioning needle (12), the cutter (11) comprises a circular thin cutter wall extending downwards from the lower part of the cutter body (1) along the axial direction and a circular cutting edge arranged at the lower end part of the cutter wall, a cavity formed by the cutter wall in a surrounding mode forms a cutter chamber, and the inner diameter of the cutter chamber is larger than the inner diameter of the mounting hole (16).

7. The automatic rivet taking knife of claim 6, characterized in that: the width of the insertion gap (13) is not less than the thickness of the pipe wall of the riveting pipe; the circular cutting edge is obliquely arranged, the inner diameter of the circular cutting edge is gradually reduced from bottom to top, and the guide positioning needle (12) penetrates through the cutter chamber and extends out to the position below the circular cutting edge.

8. The automatic rivet taking knife of claim 6, characterized in that: the upper portion of cutter body (1) is provided with cutter body clamping portion (15), and cutter body clamping portion (15) is greater than cutter body (1), and cutter body (1) is greater than direction pilot pin (12).

9. A press-riveting file binding machine with a rivet taking function comprises a rack and a file binding platform (3) arranged on the rack, wherein the rack is provided with a drilling device and a rubber tube press-riveting device, the rubber tube press-riveting device is arranged above or below the file binding platform (3), the drilling device is arranged above or below the file binding platform (3) in a sliding manner along the vertical direction, the drilling device is provided with a lifting driving mechanism arranged on the rack, a guide post which is fixed on the rack and is vertically arranged, and a base which is in transmission connection with the lifting driving mechanism, install at the drilling motor of base, install drill jig clamping machine in the lower part of drilling motor, have the hollow drill jig of circular cutting edge and set up nipper (31) in the below of base, base and nipper (31) respectively slidable mounting in the guide post, the upper portion of drill jig is provided with drill jig clamping part, its characterized in that: the automatic rivet taking knife comprises the knife body (1), a knife body clamping part (15) arranged at the upper part of the knife body (1) and a round cutting knife (11) arranged at the lower end part of the knife body (1), wherein a guide positioning needle (12) is coaxially fixed on the knife body (1), the lower part of the guide positioning needle (12) protrudes below the cutting knife (11), an annular insertion gap (13) is arranged between the guide positioning needle (12) and the cutting knife (11) in a coaxial mode, and the drill knife clamping mechanism selects and fixes the knife body clamping part (15) of the automatic rivet taking knife or the drill knife clamping part of the drill knife.

10. The file binder with rivet taking function as claimed in claim 9, wherein: the outer side of the paper pressing plate (31) is provided with a drill bit clearance groove (32) or a drill bit clearance hole, the cutter body (1) or the cutter (11) is located in the drill bit clearance groove (32) or the drill bit clearance hole in the horizontal projection plane, the outer diameter of the cutter body (1) or the cutter (11) is smaller than the drill bit clearance groove (32) or the drill bit clearance hole, at least the outer surface of the cutter (11) is in clearance fit with the drill bit clearance groove (32) or the drill bit clearance hole, and the distance from the lower end part of the cutter (11) to the position downwards exceeding the bottom surface of the paper pressing plate (31) in the cutting and riveting process is larger than the thickness of the head part (2) of the riveting tube.