CN116117062A

CN116117062A - Rivet tool front rivet-discharging mechanism and rivet gun

Info

Publication number: CN116117062A
Application number: CN202211095624.7A
Authority: CN
Inventors: 吴明祥
Original assignee: Shanghai Weiruodun Machinery Manufacturing Co ltd
Current assignee: Shanghai Weiruodun Machinery Manufacturing Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-05-16

Abstract

The utility model relates to a technical field of riveting tools specifically discloses a nail mechanism is told before rivet tool, including muzzle sleeve pipe, sliding mounting has the outer tube in the muzzle sleeve pipe, is provided with the inner tube in the outer tube, and the tip of inner tube is provided with the elasticity clamping part that is used for centre gripping rivet annular section, and the tip of outer tube is provided with the application of force portion that is used for driving elasticity clamping part to tighten up, and the outer tube is connected with the inner tube through the slip subassembly in order to realize that the inner tube follows the outer tube and slide in muzzle sleeve pipe to utilize the slip subassembly to realize that the inner tube is later than the outer tube and remove. The application also discloses a rivet gun provided with the rivet mechanism before the rivet tool. The rivet pulling device has the advantages that the waste rivet rod after rivet pulling can be enabled to be nailed from the front end of the rivet tool, the rivet pulling device is convenient to use and pour, the rivet pulling of the follow-up rivet cannot be affected, the safety performance is high, and the rivet pulling efficiency is high.

Description

Rivet tool front rivet-discharging mechanism and rivet gun

Technical Field

The application relates to the technical field of riveting tools, in particular to a rivet tool front rivet-discharging mechanism and a rivet gun.

Background

The rivet gun is a riveting tool for fastening and riveting various metal plates, pipes and other manufacturing industries, when riveting ring slot rivets, the rivets are firstly inserted into rivet holes of connected pieces, then the rivet sleeves are sleeved on working section ring slots of the rivets from the other surface of the connected pieces, then gun muzzles of the rivet gun are sleeved on clamping section ring slots of the rivets, gun muzzles are propped against end faces of the rivet sleeves, then a trigger on the gun is pulled, and the rivet gun tightens the clamping section ring slot rivet rods of the rivets until the rivet is broken. At this time, the inner wall of the nail sleeve is extruded into the ring groove of the working section of the rivet to form a new rivet head, thereby riveting and fastening the connected piece.

For example, the Chinese patent with publication number of CN214365268U specifically discloses a hydraulic rivet pulling tool, which comprises a gun body, wherein a gun head shell is arranged on one side of the gun body, a guide shaft is arranged on one side of the gun body away from the gun head shell, a waste nail row nail opening is formed at the tail end of the gun body, and the guide shaft is communicated with the waste nail row nail opening; the waste nail rod after rivet pulling can be temporarily stored in the guide shaft, and after rivet pulling of the next rivet is finished, the waste nail rod temporarily stored in the guide shaft is punched out of a waste nail discharge opening by utilizing the waste nail rod after rivet pulling, so that the discharge of the waste nail rod is realized.

However, when the rivet is pulled and riveted, because the pulling force of the rivet gun to the rivet ring groove section is large, the waste rivet rod after pulling and riveting in the instant of breaking has a large impact force, and when the waste rivet rod positioned in the guide shaft is used, the waste rivet rod in the guide shaft can be impacted greatly, and the impact can lead the waste rivet rod to fly outwards, so that the injury of operators is easily caused, and the safety is low.

Disclosure of Invention

The utility model aims at providing a nail mechanism and rivet gun are told before rivet instrument, solved when utilizing the rivet gun to rivet the annular rivet, draw the useless nail pole after riveting and fly out easily, the lower problem of security.

In a first aspect, the present application provides a rivet tool front nail-ejecting mechanism that adopts the following technical scheme:

the utility model provides a nail mechanism is told before rivet instrument, includes muzzle sleeve pipe, sliding mounting has the outer tube in the muzzle sleeve pipe, be provided with the inner tube in the outer tube, the tip of inner tube is provided with the elasticity clamping part that is used for centre gripping rivet annular section, the tip of outer tube is provided with the application of force portion that is used for driving elasticity clamping part and tightens up, the outer tube is connected with the inner tube through the slip subassembly in order to realize that the inner tube follows the outer tube and slides in muzzle sleeve pipe to utilize the slip subassembly to realize that the inner tube is later than the outer tube and remove.

By adopting the technical scheme, when the rivet with the annular groove is pulled and riveted, the force application part at the end part of the outer sleeve is pulled to act on the elastic clamping part, the elastic clamping part starts to deform and tighten to clamp the annular groove section of the rivet, and at the moment, the inner tube is kept stationary relative to the muzzle sleeve under the action of the slip assembly; along with the movement of the outer sleeve, the inner tube starts to slide along with the outer sleeve under the abutting action of the force application part and the elastic clamping part, and drives the elastic clamping part to pull the rivet ring groove section, so that the pulling riveting action is realized; after the rivet pulling is finished, the outer sleeve starts to retract, the force application part is gradually separated from the elastic clamping part, the elastic clamping part gradually loosens the waste rivet rod after the rivet pulling by means of the elastic restoring force of the elastic clamping part, and then the waste rivet rod after the rivet pulling is poured out.

The elastic clamping part and the force application part are matched, so that the rivet ring groove section can be clamped on one hand, and the rivet pulling action is realized under the action of the outer sleeve; on the other hand draws after riveting, the elasticity clamping part can reset, will draw after riveting useless nail pole pour out afterwards can, this kind of setting up mode can make and draw useless nail pole after riveting and spit the nail from the front end of rivet instrument, along with falling, convenient to use can not influence the riveting of follow-up rivet, and the security performance is higher, and has higher efficiency of riveting.

Optionally, the slip subassembly includes synchronizing block and elastic component, the inner tube has seted up along radial the embedding hole, the synchronizing block is installed in the embedding hole and is followed the radial slip of inner tube, the elastic component is located the inner tube and acts on synchronizing block tip, the one end butt in muzzle sleeve pipe inner wall of elastic component is kept away from to the synchronizing block, the slip groove has been seted up along its axis to the outer tube, the synchronizing block passes the slip groove and slides for the axis of outer tube.

By adopting the technical scheme, when the outer sleeve starts to move, the outer sleeve and the inner tube slide relatively, so that the elastic clamping part deforms and starts to clamp the rivet ring groove section, the inner tube depends on the elastic force provided by the elastic piece and cooperates with the synchronizing block to realize the relative fixation with the muzzle sleeve in the process of the relative sliding, and meanwhile, the synchronizing block slides in the slip groove; along with further movement of the outer sleeve, when the synchronizing block is abutted against the groove wall of the slip groove, the acting force of the force application part acting on the elastic clamping part overcomes the friction force between the synchronizing block and the inner wall of the muzzle sleeve, so that the inner pipe starts to slide along with the outer sleeve, and drives the elastic clamping part to pull the rivet groove section, and the rivet pulling action is realized. The setting mode has a stable movement process, and can accurately realize the time difference of the movement process between the outer sleeve and the inner tube.

Optionally, the number of the synchronizing blocks is at least two, and the synchronizing blocks are symmetrically distributed relative to the axis of the inner tube.

Through adopting above-mentioned technical scheme, set up the effort between a plurality of synchronizing blocks multiplicable inner tube and the muzzle sleeve pipe, with the relative inner tube axis symmetric distribution of synchronizing block for the effort that the synchronizing block acted on muzzle sleeve pipe inner wall is more symmetrical, and the inner tube atress is more balanced, and work is more stable.

Optionally, the slip subassembly still includes the first installation piece of being fixed in the inner tube, the mounting hole has been seted up in the first installation piece run through, the elastic component is located the mounting hole, just the both ends of elastic component respectively with two synchronization block tip butt.

Through adopting above-mentioned technical scheme, with the both ends of elastic component respectively with two synchronizing block tip butt for the effort that two synchronizing blocks acted on muzzle sleeve pipe inner wall equals, inner tube and muzzle sleeve pipe can keep higher axiality.

Optionally, the slip subassembly still includes the second installation piece of being fixed in the inner tube, the caulking groove has been seted up to the second installation piece, the one end butt at the caulking groove tank bottom of the synchronizing block is kept away from to the elastic component.

Through adopting above-mentioned technical scheme, through keeping away from the one end butt of synchronizing block with the elastic component on the tank bottom of caulking groove, can realize that every synchronizing block installs alone, and when with muzzle sheathed tube inner wall butt, can not take place to interfere between the synchronizing block, have simple to operate, job stabilization's advantage.

Optionally, the elastic clamping part includes a plurality of elastic clamping jaw that set up at the inner tube tip, and a plurality of elastic clamping jaw medial wall becomes with rivet annular complex draw-in groove, the elastic clamping jaw evenly distributed along the circumference of inner tube, and leaves the clearance between two adjacent elastic clamping jaw.

Through adopting above-mentioned technical scheme, the centre gripping and the relaxation to rivet annular section can be realized to the elasticity clamping jaw, leaves the clearance between the adjacent elasticity clamping jaw to elasticity clamping jaw takes place to warp, and elasticity clamping jaw is at the tip of inner tube along inner tube circumference evenly distributed, makes elasticity clamping part when centre gripping rivet annular section, and rivet atress is even, guarantees and draws the riveting effect.

Optionally, the diameter of the clamping groove is larger than the diameter of the rivet ring groove when the force application part does not apply force to the elastic clamping part.

By adopting the technical scheme, the rivet ring groove section is convenient to install and clamp.

Optionally, the force application part comprises a clamping inclined plane formed in the outer sleeve and close to one side of the opening of the muzzle sleeve, and the outer wall of the elastic clamping jaw is formed with a pressure-bearing inclined plane matched with the clamping inclined plane.

By adopting the technical scheme, the elastic clamping jaw can be rapidly opened and closed by utilizing the cooperation of the clamping inclined plane and the pressure-bearing inclined plane.

In a second aspect, the construction method of the combined multi-cavity comprehensive pipe rack provided by the application adopts the following technical scheme:

a rivet gun comprises the rivet tool front rivet-ejecting mechanism.

Through adopting above-mentioned technical scheme, through the foretell nail mechanism of rivet instrument of installing, can be with the useless nail pole after the rivet pulling from the front end of rivet gun to spit the nail, convenient to use, the security performance is high, and has higher rivet pulling efficiency.

Optionally, including the rifle body, muzzle sleeve pipe fixed mounting is at the front end of rifle body, the rifle body rotation is provided with the main shaft, main shaft and outer tube fixed connection, still be provided with driving motor, drive gear train and internal thread bush in the rifle body, driving motor passes through drive gear train drives the internal thread bush and rotates, the internal thread bush with main shaft screw-thread fit.

Through adopting above-mentioned technical scheme, drive the internal thread cover through drive gear train and rotate, utilize internal thread cover and main shaft screw-thread fit's relation, realize the rectilinear motion of main shaft, can drive the outer tube and realize drawing the action of riveting and reset action.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the elastic clamping part and the force application part are matched, so that the rivet ring groove section can be clamped on one hand, and the rivet pulling action is realized under the action of the outer sleeve; on the other hand, after the rivet pulling is finished, the elastic clamping part can be reset, and then the waste rivet rod after rivet pulling is poured out, so that the setting mode can enable the waste rivet rod after rivet pulling to spit out nails from the front end of a rivet tool, the rivet pulling device is convenient to use and pour along with use, the rivet pulling of the follow-up rivet cannot be influenced, the safety performance is higher, and the rivet pulling efficiency is higher;

2. by arranging the synchronizing block and arranging the slip groove on the outer sleeve, the time difference in the moving process between the outer sleeve and the inner tube can be accurately realized by utilizing the cooperation of the synchronizing block and the outer sleeve, so that the clamping and loosening of the elastic clamping part are realized, and the rivet pulling action and the resetting action are realized;

3. the clamping inclined plane is arranged in the outer sleeve, the pressure-bearing inclined plane matched with the clamping inclined plane is formed on the outer wall of the elastic clamping jaw, and the elastic clamping jaw can be rapidly opened and closed by utilizing the matching between the clamping inclined plane and the pressure-bearing inclined plane.

Drawings

FIG. 1 is a schematic cross-sectional view of a rivet tool front spitting mechanism of embodiment 1 of the present application;

FIG. 2 is a schematic view showing the structure of the elastic claw mechanism in embodiment 1 of the present application;

FIG. 3A is a schematic view of the structure of the embodiment 1 of the present application showing the relative position between the outer sleeve and the inner tube when the elastic clamping portion fully clamps the rivet ring groove segment;

FIG. 3B is a schematic view of the structure of embodiment 1 of the present application showing the relative position between the outer sleeve and the inner tube when the rivet ring groove segment is broken;

FIG. 3C is a schematic view of the embodiment 1 of the present application showing the relative position between the outer sleeve and the inner tube when the elastic clamping portion is in a relaxed state after the rivet ring groove segment is broken;

FIG. 3D is a schematic diagram of the relative position between the outer sleeve and the inner tube after the rivet tool front rivet ejection mechanism is reset after the rivet ring groove segment is broken in embodiment 1 of the present application;

FIG. 4 is a schematic illustration showing a specific connection of the pre-rivet tool spit structure to the rivet gun in example 1 of the present application;

fig. 5 is a schematic cross-sectional view of the pre-rivet tool spitting mechanism of example 2 of this application.

In the figure, 1, a muzzle sleeve; 2. an outer sleeve; 3. an inner tube; 4. a slip assembly; 41. a synchronization block; 42. an elastic member; 43. a first mounting block; 431. a mounting hole; 44. a second mounting block; 441. a caulking groove; 5. an insertion hole; 6. a slip groove; 7. an elastic clamping jaw; 8. a clamping groove; 9. clamping inclined planes; 10. a pressure-bearing inclined plane; 11. a gun body; 12. a main shaft; 13. a driving motor; 14. a drive gear set; 15. an internal thread sleeve.

Detailed Description

The present application is described in further detail below with reference to fig. 1-5.

Example 1:

referring to fig. 1, the front nail-ejecting mechanism of the rivet tool comprises a cylindrical muzzle sleeve 1, wherein one end of the muzzle sleeve 1 is opened, the other end of the muzzle sleeve 1 is fixedly connected with a gun body, the fixed connection mode is preferably in threaded connection, and the open end of the muzzle sleeve 1 is used for sleeving a rivet sleeve; an outer sleeve 2 which can slide along the axial direction of the muzzle sleeve 1 is arranged in the muzzle sleeve 1, and the outer wall of the outer sleeve 2 is attached to the inner wall of the muzzle sleeve 1 so as to ensure the concentricity of the outer sleeve and the inner wall; the inner tube 3 is arranged in the outer sleeve 2, the inner tube 3, the outer sleeve 2 and the muzzle sleeve 1 are coaxially arranged, the inner tube 3 and the outer sleeve 2 are connected through the sliding assembly 4, the sliding assembly 4 is used for realizing that the inner tube 3 linearly slides in the muzzle sleeve 1 along with the outer sleeve 2, and the inner tube 3 moves later than the outer sleeve 2 in the sliding process, so that the effect of time difference in the sliding process of the inner tube 3 and the outer sleeve 2 is achieved.

Meanwhile, an elastic clamping part is arranged on one side of the inner tube 3, which is close to the open end of the muzzle sleeve 1, and is used for clamping the rivet ring groove section in the rivet pulling process and breaking the rivet ring groove section under the driving of the outer sleeve 2 so as to complete the rivet pulling action.

Further, in order to achieve the clamping effect of the elastic clamping portion on the rivet ring groove section, a force application portion is disposed on one side of the outer sleeve 2, which is close to the open end of the muzzle sleeve 1, that is, the force application portion acts on the elastic clamping portion during the moving process of the outer sleeve 2 in the muzzle sleeve 1 during riveting, and the elastic clamping portion clamps the rivet ring groove section.

In the concrete rivet pulling process, firstly, inserting a rivet into a rivet hole of a connected piece, sleeving a rivet sleeve on a working section annular groove of the rivet from the other surface of the connected piece, sleeving a muzzle sleeve 1 on the outer wall of the rivet sleeve, abutting against the rivet sleeve, and simultaneously, enabling an annular groove section of the rivet to extend into an elastic clamping part;

at the moment, the outer sleeve 2 can be pulled in a mode of matching a motor with screw rod transmission, when the outer sleeve 2 moves, a force application part at the end part of the outer sleeve 2 acts on an elastic clamping part of the inner tube 3, the elastic clamping part starts to tighten at the moment and clamps a rivet ring groove section, and meanwhile, the inner tube 3 is static relative to the muzzle sleeve 1 under the action of the slip assembly 4;

along with the further movement of the outer sleeve 2, the inner tube 3 starts to slide along the outer sleeve 2 under the abutting action of the force application part and the elastic clamping part, and drives the elastic clamping part to pull the rivet ring groove section until the rivet ring groove section breaks away from the rivet working section, and simultaneously, under the relative action in the moving process of the inner tube 3, the muzzle sleeve 1 starts to push the nail sleeve, so that the nail sleeve deforms and is blocked with the rivet working section, and the rivet pulling action is realized;

after the rivet pulling is finished, the outer sleeve 2 starts to retract, the force application part is gradually separated from the elastic clamping part, the elastic clamping part gradually loosens the waste rivet rod after the rivet pulling by means of the elastic restoring force of the elastic clamping part, and then the waste rivet rod after the rivet pulling is poured out.

Specifically, referring to fig. 1 and 2, the elastic clamping portion includes a plurality of elastic clamping jaws 7 disposed at the end of the inner tube 3, preferably, the elastic clamping jaws 7 and the end of the inner tube 3 are integrally formed, and both are made of rubber materials, so that the elastic clamping jaws 7 and the inner tube 3 are connected and injection-molded in a manner convenient for production. Meanwhile, clamping grooves 8 matched with the rivet ring grooves are formed in the inner sides of the elastic clamping jaws 7, and the diameters of the clamping grooves 8 are larger than the diameters of the rivet ring grooves in the state that the force application part does not apply force to the elastic clamping parts, so that the rivet ring groove sections can be conveniently installed.

Further, gaps are reserved between the adjacent elastic clamping jaws 7, so that the elastic clamping jaws 7 deform, the elastic clamping jaws 7 are uniformly distributed at the end part of the inner tube 3 along the circumferential direction of the inner tube 3, so that the elastic clamping portions are uniformly stressed when clamping the rivet ring groove sections, and the rivet pulling effect is guaranteed. Preferably, the number of elastic clamping jaws 7 is three.

Specifically, the force application portion includes a clamping inclined surface 9 formed in the outer sleeve 2 near the open end side of the muzzle sleeve 1, and preferably, the clamping inclined surface 9 is formed in a tapered shape as a whole. In order to achieve a more accurate matching effect between the force application part and the elastic clamping part, the outer wall of the elastic clamping jaw 7 is formed with a pressure-bearing inclined surface 10 matched with the clamping inclined surface 9, and preferably, the pressure-bearing inclined surface 10 is also arranged in a conical shape.

That is, as the outer sleeve 2 starts to move, the clamping ramp 9 gradually approaches toward the bearing ramp 10 until it contacts the bearing ramp 10, and as the outer sleeve 2 moves further, the clamping ramp 9 starts to apply force toward the bearing ramp 10 and causes the resilient clamping jaw 7 to begin to retract, eventually reaching a clamp to the rivet ring groove segment.

Specifically, the slip assembly 4 includes a synchronizing block 41, an elastic member 42 and a first mounting block 43, where the pipe wall of the inner pipe 3 is radially penetrated with a cylindrical insertion hole 5, the synchronizing block 41 is mounted in the insertion hole 5 and slides radially along the inner pipe 3 in the insertion hole 5, the first mounting block 43 is fixedly mounted inside the inner pipe 3 and is located at one end of the inner pipe 3 far away from the elastic clamping portion, the first mounting block 43 is radially penetrated with a mounting hole 431 along the inner pipe 3, the elastic member 42 is located in the mounting hole 431, and two ends of the elastic member 42 are abutted with the two ends of the synchronizing block 41.

Meanwhile, the wall of the outer sleeve 2 is provided with a slip groove 6 along the axial direction, one end of the synchronizing block 41 away from the elastic piece 42 passes through the slip groove 6 and is propped against the inner wall of the muzzle sleeve 1, and the synchronizing block 41 can slide in the slip groove 6 along the axial direction of the outer sleeve 2. In this embodiment, the number of the synchronization blocks 41 is two, and the synchronization blocks 41 are symmetrically distributed about the axis of the inner tube 3, and correspondingly, the two insertion holes 5 are also formed and are installed in one-to-one correspondence with the synchronization blocks 41. And the synchronizing block 41 is a columnar roller pin, and the elastic piece 42 is one of a rubber block and a spring.

Referring to fig. 1, that is, when the outer sleeve 2 has not moved, the elastic member 42 abuts the synchronizing block 41 against the inner wall of the muzzle sleeve 1 by virtue of its own elastic force, so that the inner tube 3 remains stationary with respect to the muzzle sleeve 1; when the outer sleeve 2 starts to move, the elastic clamping jaw 7 starts to clamp the rivet ring groove section, meanwhile, the synchronizing block 41 slides in the slip groove 6 relative to the outer sleeve 2, and the synchronizing block 41 still abuts against the inner wall of the muzzle sleeve 1 relative to the muzzle sleeve 1 under the action of the elastic piece 42;

referring to fig. 3A, the outer sleeve 2 continues to move until the elastic clamping jaw 7 completely clamps the rivet ring groove section, and in a state that the elastic clamping jaw 7 just completely clamps the rivet ring groove section, the synchronizing block 41 just abuts against the groove wall of the side, close to the muzzle sleeve 1, of the slip groove 6, and in the process, the inner tube 3 still keeps still relative to the muzzle sleeve 1 under the abutting action of the synchronizing block 41;

referring to fig. 3B, at this time, with further movement of the outer sleeve 2, the force of the clamping inclined surface 9 on the outer sleeve 2 acting on the bearing inclined surface 10 on the elastic clamping jaw 7 overcomes the friction force between the synchronizing block 41 and the inner wall of the muzzle sleeve 1, so that the inner tube 3 together with the synchronizing block 41 follows the outer sleeve 2 to a side away from the open end of the muzzle sleeve 1 and starts pulling the rivet ring groove section;

in the continuous movement process of the outer sleeve 2, the elastic clamping jaw 7 applies an acting force to the rivet ring groove section far away from the rivet working section until the rivet ring groove section is separated from the rivet working section; meanwhile, the open end of the muzzle sleeve 1 is stressed by opposite acting force, so that the open end of the muzzle sleeve 1 compresses the nail sleeve until the inner wall of the nail sleeve deforms under the action of the annular groove of the rivet working section and is clamped with the annular groove, and the riveting of the nail sleeve and the rivet working section is realized.

Referring to fig. 3C, when the rivet pulling operation is completed and then the rivet pulling operation is reset, the outer sleeve 2 can move toward the opening end of the muzzle sleeve 1 under the cooperation of the servo motor and the screw rod, and when the outer sleeve 2 starts to move, the elastic clamping part starts to be loosened, and at the same time, the synchronizing block 41 starts to move toward the side away from the opening end of the muzzle sleeve 1 in the sliding groove 6; with further movement of the outer sleeve 2, the elastic clamping part is completely loosened and is completely separated from clamping the rivet ring groove section, and at the moment, the synchronous block 41 is just propped against the groove wall of the sliding difference groove 6, which is far away from the open end of the muzzle sleeve 1;

referring to fig. 3D, the outer sleeve 2 continues to move, and the force applied to the synchronizing block 41 by the groove wall of the slip groove 6 on the side away from the open end of the muzzle sleeve 1 overcomes the friction between the synchronizing block 41 and the inner wall of the muzzle sleeve 1, so that the synchronizing block 41 and the inner tube 3 simultaneously move along with the outer sleeve 2 towards the open end of the muzzle sleeve 1; when the end of the outer sleeve 2 is abutted to the open end of the muzzle sleeve 1, the reset action is finished, and the broken rivet ring groove section is poured out of the open end of the muzzle sleeve 1.

The embodiment also discloses a rivet gun, refer to fig. 1 and 4, including the aforesaid rivet tool front nail-spitting mechanism and gun body 11, gun muzzle sleeve 1 is fixed in the front end of gun body 11, be equipped with a pivoted main shaft 12 in the gun body 11, main shaft 12 and outer tube 2 fixed connection, simultaneously, still be equipped with driving motor 13 in the gun body 11, drive gear train 14 and an internal thread cover 15, wherein internal thread cover 15 and main shaft 12 screw-thread fit, when driving motor 13 during operation, drive internal thread cover 15 rotation through drive gear train 14, utilize the relation of internal thread cover 15 and main shaft 12 screw-thread fit, realize the rectilinear motion of main shaft 12, can drive outer tube 2 and realize drawing and riveting action and reset action.

The implementation principle of the embodiment of the application is as follows:

when the rivet with the annular groove is riveted, firstly, the open end of the muzzle sleeve 1 is sleeved on the rivet sleeve, then the outer sleeve 2 is pulled, the clamping inclined plane 9 at the end part of the outer sleeve 2 gradually approaches to the pressure-bearing inclined plane 10 until the clamping inclined plane contacts with the pressure-bearing inclined plane 10, and along with the further movement of the outer sleeve 2, the clamping inclined plane 9 starts to apply a force to the pressure-bearing inclined plane 10, and the elastic clamping jaw 7 starts to shrink inwards, so that the rivet annular groove section is clamped; meanwhile, in the sliding process of the outer sleeve 2, the inner tube 3 is tightly abutted against the muzzle sleeve 1 by means of the elastic force provided by the elastic piece 42 and the synchronizing block 41, and the synchronizing block 41 slides in the sliding difference groove 6; with further movement of the outer sleeve 2, the force of the clamping bevel 9 on the outer sleeve 2 acting on the bearing bevel 10 on the elastic clamping jaw 7 overcomes the friction between the synchronizing block 41 and the inner wall of the muzzle sleeve 1, so that the inner tube 3 together with the synchronizing block 41 follows the outer sleeve 2 towards the side away from the open end of the muzzle sleeve 1 and starts to pull the rivet ring groove section until the rivet ring groove section breaks away from the rivet working section.

After the rivet pulling is finished, the rivet ring groove section breaks from the rivet body, then the outer sleeve 2 starts to slide reversely, namely slides towards the opening end of the muzzle sleeve 1, in the sliding process, the clamping inclined surface 9 is separated from contact with the pressure-bearing inclined surface 10, the elastic clamping jaw 7 starts to relax, meanwhile, the synchronous block 41 slides to the other groove wall of the slip groove 6 and drives the inner tube 3 to move, after the end of the outer sleeve 2 is abutted against the opening end of the muzzle sleeve 1, then the waste rivet rod after the rivet pulling is poured out of the opening end of the muzzle sleeve 1.

Example 2:

the difference between this embodiment and embodiment 1 is that, referring to fig. 5, the first mounting block 43 in the slip assembly 4 is replaced by a second mounting block 44, the second mounting block 44 is also fixedly mounted in the inner tube 3 and is located at one end of the inner tube 3 far away from the elastic clamping portion, the outer wall of the second mounting block 44 is provided with the caulking grooves 441 with the same number as the synchronizing blocks 41, the elastic members 42 are mounted in the caulking grooves 441, and one end of the elastic members 42 far away from the synchronizing blocks 41 is abutted against the bottoms of the caulking grooves 441.

through keeping away from the one end butt of synchronizing block 41 with elastic component 42 on the tank bottom of caulking groove, can realize that every synchronizing block 41 installs alone, and when the inner wall butt with muzzle sleeve pipe 1, can not take place to interfere between the synchronizing block 41, have simple to operate, job stabilization's advantage.

The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes of the mechanism, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. The utility model provides a nail mechanism is told before rivet instrument, includes muzzle sleeve pipe (1), its characterized in that, sliding mounting has outer tube (2) in muzzle sleeve pipe (1), be provided with inner tube (3) in outer tube (2), the tip of inner tube (3) is provided with the elasticity clamping part that is used for centre gripping rivet annular section, the tip of outer tube (2) is provided with the application of force portion that is used for driving elasticity clamping part to tighten up, outer tube (2) are connected with inner tube (3) through slip subassembly (4) in order to realize that inner tube (3) follow outer tube (2) in muzzle sleeve pipe (1) to utilize slip subassembly (4) to realize that inner tube (3) are later than outer tube (2) removal.

2. A rivet tool front nail-ejecting mechanism according to claim 1, characterized in that the slip assembly (4) comprises a synchronizing block (41) and an elastic member (42), the inner tube (3) is provided with an embedded hole (5) along the radial direction, the synchronizing block (41) is arranged in the embedded hole (5) and slides along the inner tube (3) along the radial direction, the elastic member (42) is arranged in the inner tube (3) and acts on the end part of the synchronizing block (41), one end of the synchronizing block (41) away from the elastic member (42) is abutted against the inner wall of the muzzle sleeve (1), the outer sleeve (2) is provided with a slip groove (6) along the axis thereof, and the synchronizing block (41) penetrates through the slip groove (6) and slides relative to the axis of the outer sleeve (2).

3. A mechanism for pre-tool ejection of rivets as claimed in claim 2, characterized in that said number of synchronizing blocks (41) is at least two and said synchronizing blocks (41) are symmetrically distributed with respect to the axis of the inner tube (3).

4. A rivet tool front nail-ejection mechanism according to claim 2, characterized in that the slip assembly further comprises a first mounting block (43) fixed in the inner tube (3), the first mounting block (43) is provided with a mounting hole (431) in a penetrating way, the elastic piece (42) is located in the mounting hole (431), and two ends of the elastic piece (42) are respectively abutted with the end parts of the two synchronous blocks (41).

5. A mechanism for spitting nails before a rivet tool according to claim 2, characterized in that the slip assembly further comprises a second mounting block (44) fixed in the inner tube (3), the second mounting block (44) is provided with a caulking groove (441), and one end of the elastic piece (42) far away from the synchronizing block (41) is abutted against the bottom of the caulking groove (441).

6. The rivet tool front rivet-ejecting mechanism according to claim 1, wherein the elastic clamping portion comprises a plurality of elastic clamping jaws (7) arranged at the end part of the inner tube, clamping grooves (8) matched with rivet ring grooves are formed in the inner sides of the elastic clamping jaws (7), the elastic clamping jaws (7) are uniformly distributed along the circumferential direction of the inner tube (3), and gaps are reserved between every two adjacent elastic clamping jaws (7).

7. The mechanism according to claim 6, wherein the diameter of the clamping groove (8) is larger than the diameter of the rivet ring groove when the force application part does not apply force to the elastic clamping part.

8. A mechanism for ejecting nails in front of a rivet tool according to claim 6, characterized in that the force application part comprises a clamping inclined surface (9) formed in the outer sleeve (2) and close to the opening side of the muzzle sleeve (1), and the outer wall of the elastic clamping jaw (7) is formed with a bearing inclined surface (10) matched with the clamping inclined surface (9).

9. A riveter comprising a rivet tool front stapling mechanism as recited in any one of claims 1-8.

10. A riveter according to claim 9, comprising a gun body (11), wherein the muzzle sleeve (1) is fixedly arranged at the front end of the gun body (11), a main shaft (12) is rotationally arranged in the gun body (11), the main shaft (12) is fixedly connected with the outer sleeve (2), a driving motor (13), a transmission gear set (14) and an internal thread sleeve (15) are further arranged in the gun body (11), the driving motor (13) drives the internal thread sleeve (15) to rotate through the transmission gear set (14), and the internal thread sleeve (15) is in threaded fit with the main shaft (12).