CN214923997U

CN214923997U - Automatic riveting device of putty knife

Info

Publication number: CN214923997U
Application number: CN202023084866.5U
Authority: CN
Inventors: 许承
Original assignee: Hangzhou Lianhe Tool Manufacturing Co ltd
Current assignee: Hangzhou Lianhe Tool Manufacturing Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-11-30
Anticipated expiration: 2030-12-18

Abstract

The utility model discloses an automatic riveting device of a putty knife, which comprises a base, wherein a fixing clamp and a fixing seat for fixing a handle are arranged on the base, a hydraulic cylinder which is vertically arranged is arranged on the fixing seat, and a liftable pressure rod is connected on the hydraulic cylinder; the base is provided with a riveting tube guide rail and a feeding tube, one side of the lower end of the feeding tube is provided with a discharge hole, and the discharge hole is opposite to one end of the riveting tube guide rail; a pushing cylinder used for pushing the riveting pipe from the feeding pipe to the riveting pipe guide rail is arranged on the other side of the lower end of the feeding pipe, a push rod is connected to the pushing cylinder, and a through hole through which the push rod can pass is formed in the lower end of the feeding pipe; the bottom of the riveting pipe guide rail is provided with a through hole which corresponds to the pressure lever and can allow the riveting pipe to pass through; the riveting pipe guide rail is provided with an oiling mechanism for oiling the outer surface of the riveting pipe. The utility model discloses degree of automation is high, and the operation is got up simple and conveniently, has effectively improved the assembly efficiency of putty knife tail cover.

Description

Automatic riveting device of putty knife

Technical Field

The utility model relates to a riveting set, in particular to automatic riveting set of putty knife.

Background

Putty knives are a common tool used by painters. As shown in the attached drawing 1, the putty knife comprises a knife handle 1 and a blade 2, wherein the blade 2 is arranged at one end of the knife handle 1, the other end of the knife handle 1 is connected with a tail sleeve 3, and the tail sleeve 3 is riveted and fixed at the end part of the knife handle 1 through a riveting pipe 4. The tail sleeve is sleeved on the tail portion of the knife handle, the second riveting hole in the tail sleeve is aligned with the first riveting hole in the knife handle, then the riveting pipe is pressed into the first riveting hole and the second riveting hole through the riveting device, and therefore installation of the tail sleeve is completed. The existing riveting device has low automation degree and is complex to operate, so that the assembly efficiency of the tail sleeve is low.

Disclosure of Invention

The utility model aims at solving the problem that the automation degree of the existing riveting device is low, the operation is comparatively complicated, the assembly efficiency of the tail sleeve is low, the automatic riveting device of the putty knife is provided, and the problems can be effectively solved.

The utility model aims at realizing through the following technical scheme: an automatic riveting device of a putty knife comprises a base, wherein a fixing clamp and a fixing seat for fixing a handle are arranged on the base, a vertically arranged hydraulic cylinder is arranged on the fixing seat, and a liftable pressure rod is connected to the hydraulic cylinder; the base is provided with a riveting tube guide rail and a feeding tube, one side of the lower end of the feeding tube is provided with a discharge hole, and the discharge hole is opposite to one end of the riveting tube guide rail; a pushing cylinder used for pushing the riveting pipe from the feeding pipe to the riveting pipe guide rail is arranged on the other side of the lower end of the feeding pipe, a push rod is connected to the pushing cylinder, and a through hole through which the push rod can pass is formed in the lower end of the feeding pipe; the bottom of the riveting pipe guide rail is provided with a through hole which corresponds to the pressure lever and can allow the riveting pipe to pass through; the riveting pipe guide rail is provided with an oiling mechanism for oiling the outer surface of the riveting pipe.

The utility model discloses in, to rivet in the pipe puts into the material loading pipe, rivet the pipe and be vertical range in the material loading pipe, the propelling movement cylinder pushes away the riveting pipe of below in with the material loading pipe to riveting on the pipe guide rail, under the promotion of propelling movement cylinder, the whole certain distance that moves forward of riveting pipe on the pipe guide rail, the distance that once pushes away the riveting pipe and move forward just is the distance of a riveting pipe diameter. When assembling the tail sleeve, earlier with the afterbody of tail sleeve cover to the handle of a knife, make the first riveting hole on the second riveting pore pair handle of a knife on the tail sleeve, then it is fixed through mounting fixture with the handle of a knife, fixed good back, first riveting hole on the handle of a knife just in time is located the depression bar under, the distance between handle of a knife upper surface and the riveting pipe guide rail is less than the height of a riveting pipe, the riveting pipe on the riveting pipe guide rail moves certain distance forward under the propelling movement of propelling movement cylinder, the riveting pipe that is located the forefront just falls into the clearing hole, then the depression bar moves down under the effect of pneumatic cylinder, the riveting pipe that will be located the forefront impresses in the handle of a knife, thereby fix the tail sleeve at the handle of a knife tip, the back is accomplished in the pressure equipment, depression bar rebound to initial position, then take off from mounting fixture with the handle of a knife that the pressure equipment was accomplished can. When the riveting pipe is pressed and mounted, the oil coating mechanism can coat lubricating oil on the outer side face of the riveting pipe, so that the resistance of the riveting pipe during pressing and mounting is reduced, and the riveting pipe is convenient to be pressed and mounted in place. The utility model discloses degree of automation is high, and the operation is got up simple and conveniently, has effectively improved the assembly efficiency of putty knife tail cover.

Preferably, the fixing clamp comprises a lower clamp plate and an upper clamp plate, one end of the lower clamp plate is connected with one end of the upper clamp plate through a hinge, an upper clamping groove is formed in one side, close to the lower clamp plate, of the upper clamp plate, a lower clamping groove corresponding to the upper clamping groove is formed in one side, close to the upper clamp plate, of the lower clamp plate, and a locking mechanism is arranged between the upper clamp plate and the lower clamp plate. The upper clamping groove and the lower clamping groove are matched with the shape of the tool shank. When the fixing clamp is used, the upper clamping plate is firstly turned upwards, then the knife handle is placed into the lower clamping groove on the lower clamping plate, then the upper clamping plate is closed, and the upper clamping plate and the lower clamping plate are locked by the locking mechanism, so that the knife handle is fixed.

Preferably, the locking mechanism comprises a bracket arranged on one side of the upper clamping plate, a pull rod is connected to the bracket in a sliding manner, a boss is arranged on one side, close to the upper clamping plate, of the lower clamping plate, a groove corresponding to the boss is formed in the upper clamping plate, a pull rod hole is formed in the upper clamping plate, the pull rod penetrates through the pull rod hole, and a locking groove corresponding to the pull rod is formed in the boss; a flange is arranged on the pull rod, and a first spring is arranged between the flange and the bracket. The front end of the pull rod is pulled out of the locking groove by pulling the pull rod outwards, so that the upper clamping plate can be opened upwards; when the upper clamping plate and the lower clamping plate need to be locked, the pulling plate is pulled out for a certain distance, then the upper clamping plate is closed, finally the pulling rod is loosened, and the pulling rod extends into the locking groove under the action of the first spring, so that the upper clamping plate and the lower clamping plate are locked.

Preferably, the cross section of the riveting tube guide rail is U-shaped.

Preferably, the oil coating mechanism comprises a piston cavity, a first connecting pipe, a second connecting pipe and a lubricating oil tank, the piston cavity is arranged on the inner wall of the through hole, a piston is connected in the piston cavity, a telescopic block is arranged on one side of the piston, which faces the center of the through hole, an oil cavity is formed between the piston and one end of the piston cavity, a second spring is arranged in the oil cavity, and two ends of the second spring are respectively connected with one end of the piston and one end of the piston cavity; an annular groove is formed in the inner wall of the through hole and located below the piston cavity, an annular ring is arranged in the annular groove, an annular oil absorption part is arranged on the inner side of the annular ring, an annular elastic membrane is arranged on the outer side of the annular ring, the upper end and the lower end of the annular elastic membrane are respectively connected with the outer surface of the annular ring, an annular buffer cavity is formed between the annular elastic membrane and the outer surface of the annular ring, and a plurality of oil holes are formed in the annular ring; one end of the first connecting pipe is connected with the oil cavity, the other end of the first connecting pipe is connected with the lubricating oil tank, and a first one-way valve is arranged on the first connecting pipe; one end of the second connecting pipe is connected with the oil cavity, the other end of the second connecting pipe is connected with the annular elastic membrane, and a second one-way valve is arranged on the second connecting pipe. The oil absorption portion is made of sponge, and the inner diameter of the oil absorption portion is slightly smaller than the outer diameter of the riveting pipe. The oil absorption part is adsorbed with lubricating oil. When the riveting pipe passes through the through hole in the press fitting process, the oil absorption part can uniformly coat a layer of lubricating oil on the outer side surface of the riveting pipe. When the riveting pipe falls into the through hole, the riveting pipe cannot directly fall under the action of the telescopic block but stays in the telescopic hole, when the riveting pipe is pressed downwards by the pressure rod, the riveting pipe gradually penetrates through the through hole, at the moment, the telescopic block moves towards the bottom of the piston cavity and further drives the piston to move, the oil cavity is filled with lubricating oil, the volume of the oil cavity is reduced in the moving process of the piston, at the moment, the first one-way valve is in a stop state, the second one-way valve is in a conduction state, the lubricating oil in the oil cavity enters the buffer cavity through the second connecting pipe and then enters the oil absorption part through the oil hole, and the lubricating oil is absorbed by the oil absorption part; when the riveting pipe is completely through the clearing hole, flexible piece rebounds to original position under the effect of second spring, oil pocket volume increase this moment, first check valve is in the on-state, the second check valve is in the off-state, lubricating oil in the lubricating oil tank is inhaled in the oil pocket through the second connecting pipe, thus, after a riveting pipe has been pressed fit at every turn, can both supply certain lubricating oil in the oil absorption portion automatically, in order to compensate the lubricating oil that consumes when the riveting pipe passes through the clearing hole, make can keep enough amount of lubricating oil in the oil absorption portion, the fat liquoring effect to the riveting pipe has been guaranteed. When the speed that the oil in the oil pocket flowed into in the inflation chamber was too fast, the oil pressure in the cushion chamber can rise fast, at this moment, because annular elastic membrane is made by elastic material, annular elastic membrane can expand, thereby make the cushion chamber inflation, thereby play certain cushioning effect to the rise of oil pressure, make the oil pressure in the cushion chamber can obtain control, thereby make lubricating oil in the cushion chamber can pass through the oilhole with comparatively mild velocity of flow and flow into in the oil absorption portion, it is too high to have avoided oil in the cushion chamber, lubricating oil passes through the velocity of flow of oilhole too fast and produces great impact to oil absorption portion, the damage to oil absorption portion has been reduced, the life of oil absorption portion has been improved.

Preferably, the annular elastic membrane is made of rubber.

Preferably, the oil absorbing part is made of sponge.

Preferably, the cross section of one end of the telescopic block close to the center of the through hole is triangular.

The utility model has the advantages that: the utility model discloses degree of automation is high, and the operation is got up simple and conveniently, has effectively improved the assembly efficiency of putty knife tail cover.

Drawings

Fig. 1 is a schematic structural view of a conventional putty knife.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a top view of the holding fixture.

Fig. 4 is a sectional view of the fixing clip.

Fig. 5 is a schematic structural view of the feeding pipe.

FIG. 6 is a top view of the rivet tube guide rail.

Fig. 7 is a sectional view taken in the direction of a-a in fig. 6.

Fig. 8 is a sectional view taken in the direction B-B in fig. 6.

Fig. 9 is an enlarged view of a portion D in fig. 8.

Fig. 10 is an enlarged view of a portion E of fig. 9.

In the figure: 1. the riveting tool comprises a tool handle, 2, a blade, 3, a tail sleeve, 4, a riveting pipe, 5, a base, 6, a fixed seat, 7, a hydraulic cylinder, 8, a pressure rod, 9, a fixing clamp, 10, a riveting pipe guide rail, 11, a feeding pipe, 12, a pushing cylinder, 13, an upper clamping plate, 14, a support, 15, a hinge, 16, a pull rod, 17, a handle, 18, a first spring, 19, a lower clamping plate, 20, a flange, 21, a boss, 22, a discharge hole, 23, a through hole, 24, a through hole, 25, a telescopic block, 26, a lubricating oil box, 27, a first connecting pipe, 28, a first check valve, 29, a piston cavity, 30, a piston, 31, a second spring, 32, an annular groove, 33, an annular ring, 34, an oil absorption part, 35, a second connecting pipe, 36, a second check valve, 37, an oil hole, 38 and an annular elastic membrane.

Detailed Description

The invention will be further described with reference to the following detailed description and accompanying drawings.

Example 1:

as shown in fig. 2 to 10, an automatic riveting device for a putty knife comprises a base 5, wherein a fixing clamp 9 and a fixing seat 6 for fixing a handle are arranged on the base 5. The fixing clamp 9 comprises a lower clamping plate 19 and an upper clamping plate 13, and one end of the lower clamping plate 19 is connected with one end of the upper clamping plate 13 through a hinge 15. One side of the upper clamping plate 13 close to the lower clamping plate 19 is provided with an upper clamping groove, one side of the lower clamping plate 19 close to the upper clamping plate 13 is provided with a lower clamping groove corresponding to the upper clamping groove, and the upper clamping groove and the lower clamping groove are matched with the shape of the tool holder 1. A locking mechanism is arranged between the upper clamping plate 13 and the lower clamping plate 19. The locking mechanism comprises a bracket 14 arranged on one side of the upper clamping plate 13, and the bracket 14 is U-shaped. The support 14 is connected with a pull rod 16 in a sliding mode, one side, close to the upper clamping plate, of the lower clamping plate 19 is provided with a boss 21, the upper clamping plate 13 is provided with a groove corresponding to the boss 21, the upper clamping plate 13 is provided with a pull rod hole, the pull rod 16 penetrates through the pull rod hole, and the boss 21 is provided with a locking groove corresponding to the pull rod 16. The pull rod 16 is provided with a flange 20, and a first spring 18 is arranged between the flange 20 and the bracket 14. When the fixing clamp is used, the upper clamping plate is firstly turned upwards, then the knife handle is placed into the lower clamping groove on the lower clamping plate, then the upper clamping plate is closed, and the upper clamping plate and the lower clamping plate are locked by the locking mechanism, so that the knife handle is fixed. The front end of the pull rod is pulled out of the locking groove by pulling the pull rod outwards, so that the upper clamping plate can be opened upwards; when the upper clamping plate and the lower clamping plate need to be locked, the pulling plate is pulled out for a certain distance, then the upper clamping plate is closed, finally the pulling rod is loosened, and the pulling rod extends into the locking groove under the action of the first spring, so that the upper clamping plate and the lower clamping plate are locked.

The fixed seat 6 is provided with a vertically arranged hydraulic cylinder 7, and the hydraulic cylinder 7 is connected with a pressure rod 8. The pressing rod 8 is arranged in the vertical direction. The pressure rod 8 moves up and down under the drive of the hydraulic cylinder 7. The base 5 is provided with a riveting pipe guide rail 10 and a feeding pipe 11. The rivet tube guide rail 10 is disposed in a horizontal direction. The feeding pipe 11 is arranged in a vertical direction. One side of the lower end of the feeding pipe 11 is provided with a discharge port 22, and the discharge port 22 is opposite to one end of the riveting pipe guide rail 10. The other side of the lower end of the feeding pipe 11 is provided with a pushing cylinder 12 used for pushing the riveting pipe 3 to the riveting pipe guide rail 10 from the feeding pipe 11, and the pushing cylinder 12 is connected with a push rod which is horizontally arranged. The lower end of the feeding pipe 11 is provided with a through hole 23 through which the push rod can pass. The cross section of the riveting tube guide rail 10 is U-shaped. The bottom of the rivet pipe guide rail 10 is provided with a through hole 24 which corresponds to the pressure lever and can allow the rivet pipe to pass through. The diameter of the passage hole 24 is slightly larger than the outer diameter of the rivet tube 3. The riveting pipe guide rail 10 is provided with an oiling mechanism for oiling the outer surface of the riveting pipe.

The oiling mechanism comprises a piston cavity 29 arranged on the inner wall of the through hole 24, a first connecting pipe 27, a second connecting pipe 35 and a lubricating oil tank 26, wherein a piston 30 is connected in the piston cavity 29, a telescopic block 25 is arranged on one side of the piston 30, which faces to the center of the through hole 24, and the cross section of one end, close to the center of the through hole 24, of the telescopic block 25 is triangular. An oil chamber is formed between the piston 30 and one end of the piston chamber 29, a second spring 31 is arranged in the oil chamber, and two ends of the second spring 31 are respectively connected with the piston 30 and one end of the piston chamber 29. An annular groove 32 is formed in the inner wall of the passage hole 24, the annular groove 32 is located below the piston chamber 39, an annular ring 33 is formed in the annular groove 32, and an annular oil suction portion 34 is formed on the inner side of the annular ring 33. The oil absorbing portion 34 is made of sponge. The internal diameter of the oil absorption part is slightly smaller than the external diameter of the riveting pipe. An annular elastic membrane 38 is arranged on the outer side of the annular ring 33, and the upper end and the lower end of the annular elastic membrane 38 are respectively connected with the outer surface of the annular ring 33. The annular elastic membrane 38 is made of rubber. An annular buffer cavity is formed between the annular elastic membrane 38 and the outer surface of the annular ring 33, and a plurality of oil holes 37 are formed in the annular ring 33. The first connecting pipe 27 is connected to the oil chamber at one end and to the lubricating oil tank 26 at the other end, and a first check valve 28 is provided on the first connecting pipe 27. One end of the second connecting pipe 35 is connected to the oil chamber, and the other end is connected to the annular elastic membrane 38, and the second connecting pipe 35 is provided with a second check valve 36.

The utility model discloses in, to rivet in the pipe puts into the material loading pipe, rivet the pipe and be vertical range in the material loading pipe, the propelling movement cylinder pushes away the riveting pipe of below in with the material loading pipe to riveting on the pipe guide rail, under the promotion of propelling movement cylinder, the whole certain distance that moves forward of riveting pipe on the pipe guide rail, the distance that once pushes away the riveting pipe and move forward just is the distance of a riveting pipe diameter. When assembling the tail sleeve, earlier with the afterbody of tail sleeve cover to the handle of a knife, make the first riveting hole on the second riveting pore pair handle of a knife on the tail sleeve, then it is fixed through mounting fixture with the handle of a knife, fixed good back, first riveting hole on the handle of a knife just in time is located the depression bar under, the distance between handle of a knife upper surface and the riveting pipe guide rail is less than the height of a riveting pipe, the riveting pipe on the riveting pipe guide rail moves certain distance forward under the propelling movement of propelling movement cylinder, the riveting pipe that is located the forefront just falls into the clearing hole, then the depression bar moves down under the effect of pneumatic cylinder, the riveting pipe that will be located the forefront impresses in the handle of a knife, thereby fix the tail sleeve at the handle of a knife tip, the back is accomplished in the pressure equipment, depression bar rebound to initial position, then take off from mounting fixture with the handle of a knife that the pressure equipment was accomplished can. The utility model discloses degree of automation is high, and the operation is got up simple and conveniently, has effectively improved the assembly efficiency of putty knife tail cover.

When the riveting pipe is pressed and mounted, the oil coating mechanism can coat lubricating oil on the outer side face of the riveting pipe, so that the resistance of the riveting pipe during pressing and mounting is reduced, and the riveting pipe is convenient to be pressed and mounted in place. The oil absorption part is adsorbed with lubricating oil. When the riveting pipe passes through the through hole in the press fitting process, the oil absorption part can uniformly coat a layer of lubricating oil on the outer side surface of the riveting pipe. When the riveting pipe falls into the through hole, the riveting pipe cannot directly fall under the action of the telescopic block but stays in the telescopic hole, when the riveting pipe is pressed downwards by the pressure rod, the riveting pipe gradually penetrates through the through hole, at the moment, the telescopic block moves towards the bottom of the piston cavity and further drives the piston to move, the oil cavity is filled with lubricating oil, the volume of the oil cavity is reduced in the moving process of the piston, at the moment, the first one-way valve is in a stop state, the second one-way valve is in a conduction state, the lubricating oil in the oil cavity enters the buffer cavity through the second connecting pipe and then enters the oil absorption part through the oil hole, and the lubricating oil is absorbed by the oil absorption part; when the riveting pipe is completely through the clearing hole, flexible piece rebounds to original position under the effect of second spring, oil pocket volume increase this moment, first check valve is in the on-state, the second check valve is in the off-state, lubricating oil in the lubricating oil tank is inhaled in the oil pocket through the second connecting pipe, thus, after a riveting pipe has been pressed fit at every turn, can both supply certain lubricating oil in the oil absorption portion automatically, in order to compensate the lubricating oil that consumes when the riveting pipe passes through the clearing hole, make can keep enough amount of lubricating oil in the oil absorption portion, the fat liquoring effect to the riveting pipe has been guaranteed. When the speed that the oil in the oil pocket flowed into in the inflation chamber was too fast, the oil pressure in the cushion chamber can rise fast, at this moment, because annular elastic membrane is made by elastic material, annular elastic membrane can expand, thereby make the cushion chamber inflation, thereby play certain cushioning effect to the rise of oil pressure, make the oil pressure in the cushion chamber can obtain control, thereby make lubricating oil in the cushion chamber can pass through the oilhole with comparatively mild velocity of flow and flow into in the oil absorption portion, it is too high to have avoided oil in the cushion chamber, lubricating oil passes through the velocity of flow of oilhole too fast and produces great impact to oil absorption portion, the damage to oil absorption portion has been reduced, the life of oil absorption portion has been improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides an automatic riveting set of putty knife which characterized in that: the hydraulic lifting device comprises a base, wherein a fixing clamp and a fixing seat for fixing a handle are arranged on the base, a vertically arranged hydraulic cylinder is arranged on the fixing seat, and a lifting pressure rod is connected to the hydraulic cylinder; the base is provided with a riveting tube guide rail and a feeding tube, one side of the lower end of the feeding tube is provided with a discharge hole, and the discharge hole is opposite to one end of the riveting tube guide rail; a pushing cylinder used for pushing the riveting pipe from the feeding pipe to the riveting pipe guide rail is arranged on the other side of the lower end of the feeding pipe, a push rod is connected to the pushing cylinder, and a through hole through which the push rod can pass is formed in the lower end of the feeding pipe; the bottom of the riveting pipe guide rail is provided with a through hole which corresponds to the pressure lever and can allow the riveting pipe to pass through; the riveting pipe guide rail is provided with an oiling mechanism for oiling the outer surface of the riveting pipe.

2. The automatic riveting device of putty knife as defined in claim 1, characterized in that the fixing clamp comprises a lower plate and an upper plate, one end of the lower plate is connected with one end of the upper plate through a hinge, an upper clamping groove is arranged on one side of the upper plate close to the lower plate, a lower clamping groove corresponding to the upper clamping groove is arranged on one side of the lower plate close to the upper plate, and a locking mechanism is arranged between the upper plate and the lower plate.

3. The automatic riveting device of the putty knife as defined in claim 2, wherein the locking mechanism comprises a bracket arranged at one side of the upper clamping plate, a pull rod is slidably connected to the bracket, a boss is arranged at one side of the lower clamping plate close to the upper clamping plate, a groove corresponding to the boss is arranged on the upper clamping plate, a pull rod hole is arranged on the upper clamping plate, the pull rod passes through the pull rod hole, and a locking groove corresponding to the pull rod is arranged on the boss; a flange is arranged on the pull rod, and a first spring is arranged between the flange and the bracket.

4. The automatic staking device of claim 1 in which the rivet tube guide is "U" shaped in cross-section.

5. The automatic riveting device of the putty knife as defined in claim 1, wherein the oiling mechanism comprises a piston cavity, a first connecting pipe, a second connecting pipe and a lubricating oil tank which are arranged on the inner wall of the through hole, a piston is connected in the piston cavity, a telescopic block is arranged on one side of the piston facing the center of the through hole, an oil cavity is formed between the piston and one end of the piston cavity, a second spring is arranged in the oil cavity, and two ends of the second spring are respectively connected with one end of the piston and one end of the piston cavity; an annular groove is formed in the inner wall of the through hole and located below the piston cavity, an annular ring is arranged in the annular groove, an annular oil absorption part is arranged on the inner side of the annular ring, an annular elastic membrane is arranged on the outer side of the annular ring, the upper end and the lower end of the annular elastic membrane are respectively connected with the outer surface of the annular ring, an annular buffer cavity is formed between the annular elastic membrane and the outer surface of the annular ring, and a plurality of oil holes are formed in the annular ring; one end of the first connecting pipe is connected with the oil cavity, the other end of the first connecting pipe is connected with the lubricating oil tank, and a first one-way valve is arranged on the first connecting pipe; one end of the second connecting pipe is connected with the oil cavity, the other end of the second connecting pipe is connected with the annular elastic membrane, and a second one-way valve is arranged on the second connecting pipe.

6. An automatic putty knife riveting apparatus according to claim 5 wherein the annular elastic membrane is made of rubber.

7. The automatic caulking apparatus of putty knife according to claim 5, characterized in that the oil suction part is made of sponge.

8. An automatic putty knife riveting apparatus according to claim 5 wherein the cross section of the end of the telescoping block adjacent the center of the aperture is triangular.