CN214488707U - Valve plate riveting device of exhaust gas recirculation valve assembly - Google Patents

Abstract

The utility model provides a valve block riveting device of an exhaust gas recirculation valve assembly, which comprises a valve block riveting component, wherein the valve block riveting component comprises an inclined mounting seat, a riveting tool, a clamp pressing component and a valve block fixing component; the inclined mounting seat comprises a top plate, and two ends of the top plate have different heights; the riveting tool is arranged on the top plate and provided with a first avoidance groove, a limiting block and two positioning grooves, the first avoidance groove extends along the inclined direction of the top plate, the two positioning grooves are respectively arranged on two sides of the first avoidance groove, the positioning grooves are communicated with the first avoidance groove, and the limiting block is positioned on one side, back to the first avoidance groove, of the positioning grooves; the clamp pressing assembly comprises a lower pressing head positioned above the first avoidance groove; the valve plate fixing assembly comprises a pressing rod, the pressing rod can move from the end part of the first avoidance groove to the upper part of the first avoidance groove, and the height of the pressing rod is higher than the height of the circle center of the positioning groove in the vertical direction. The utility model has the advantages of convenient riveting and high working efficiency.

Description

Valve plate riveting device of exhaust gas recirculation valve assembly

Technical Field

The utility model relates to an exhaust gas recirculation valve production facility technical field specifically is a valve block riveting set who relates to an exhaust gas recirculation valve assembly.

Background

An EGR valve, also called an exhaust gas recirculation valve, is an electromechanical integrated device mounted on a diesel engine for controlling the amount of exhaust gas recirculation fed back to an intake system. After the valve block is pressed and mounted on the EGR valve, the control arm assembly is required to be mounted and comprises a control shaft assembly and a control handle, the control handle is arranged at one end of the control shaft assembly and can drive the control shaft assembly to rotate around the axial direction of the control shaft assembly, the control shaft assembly is inserted into a through hole in the middle of the valve block, a first riveting hole is formed in the control shaft assembly, a second riveting hole is formed in the wall of the through hole of the valve block, and the control shaft assembly and the valve block are fixedly connected through rivets inserted into the first riveting hole and the second riveting hole.

The traditional installation method of the control arm assembly is as follows: firstly, horizontally placing the EGR valve with the valve plate pressed on a workbench, and then inserting the second end of the operating shaft assembly into the through hole of the valve plate through the through bush from one side; then respectively rotating the valve plate and the control shaft assembly to ensure that the first riveting hole of the control shaft assembly is just communicated with the second riveting hole of the valve plate; then riveting the valve plate and the operating shaft assembly together by using an automatic rivet gun; and finally, a limiting pin is pressed from the outer side of the valve body and can limit the rotating angles of the control handle, the control shaft assembly and the valve plate. In the traditional installation method, because the EGR valve is horizontally arranged, when riveting, an operator needs to bend down to observe to align the automatic rivet gun extending into the EGR valve with the riveting hole, so that the working efficiency is low, the operator can perform long-term bending operation, and the health problem is easily caused. And when riveting, still need manual promotion valve block rotatory, rely on manual rotation valve block, lead to the valve block to make a round trip to rock because the handle shakes easily, and then make first riveting hole and second riveting hole can't just right, influence normal riveting.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a make things convenient for riveting operation, be convenient for improve work efficiency's exhaust gas recirculation valve assembly's valve block riveting set.

In order to achieve the purpose, the utility model provides a valve block riveting device of an exhaust gas recirculation valve assembly, which comprises a valve block riveting component, wherein the valve block riveting component comprises an inclined mounting seat, a riveting tool, a clamp pressing component and a valve block fixing component; the inclined mounting seat comprises a top plate, and two ends of the top plate have different heights in the vertical direction; the riveting tool is arranged on the top plate, a first avoidance groove, a limiting block and two positioning grooves are formed in the riveting tool, the first avoidance groove extends along the inclined direction of the top plate, the two positioning grooves are respectively formed in two sides of the extending direction of the first avoidance groove, the positioning grooves are communicated with the first avoidance groove, and the limiting block is located on one side, back to the first avoidance groove, of the positioning grooves; the clamp pressing assembly comprises a lower pressing head, and the lower pressing head is positioned above the first avoidance groove; the valve plate fixing assembly comprises a pressing rod, the pressing rod can move from the end part of the first avoidance groove to the upper part of the first avoidance groove, and the height of the pressing rod is higher than the height of the circle center of the positioning groove in the vertical direction.

According to the scheme, the EGR valve can be obliquely arranged through the obliquely arranged riveting tool, so that an operator can conveniently align the automatic rivet gun with the riveting hole in a comfortable posture, the working efficiency is improved, and the probability of lumbar strain of the operator can be reduced; the pressure rod is arranged and used for extending into the EGR valve and pushing the valve plate to be turned upwards to the closed state of the EGR valve so as to temporarily fix the position of the valve plate, manual fixing operation is replaced, the valve plate can be effectively prevented from shaking back and forth, and the second riveting hole of the valve plate can just face the opening of the EGR valve; be used for installing the manipulator arm assembly back through setting up the stopper, utilize the stopper restriction handle to rotate, play the effect of temporary fixation control shaft subassembly promptly for even depression bar and valve block separation, the epaxial first riveting hole of control shaft also can just to and communicate with the second riveting hole of valve block, the riveting operation of being convenient for.

The further scheme is that the limiting block is provided with a first inclined surface, and the first inclined surface is intersected with the axis of the positioning groove at an acute angle in the radial plane of the positioning groove.

The further scheme is that, the fixed subassembly of valve block still includes first pivot, the oscillating piece, the fixed axle, loose axle and elastic component, first pivot setting is in the first one side of dodging the groove, the both ends of oscillating piece respectively with first pivot, compression linkage, the oscillating piece can be rotatory to the first groove of dodging around first pivot, depression bar and fixed axle all are located the oscillating piece towards the first one side of dodging the groove, the fixed axle is located first pivot, first dodge between the groove, the loose axle sets up on the oscillating piece and is located between first pivot and the depression bar, the both ends of elastic component respectively with the fixed axle, the loose axle is connected.

The further proposal is that a handle is arranged on the swinging piece and is positioned between the movable shaft and the pressure lever, and the distance from the handle to the pressure lever is less than the distance from the handle to the movable shaft in the extending direction of the swinging piece.

The further scheme is that the inclined mounting seat further comprises a bottom plate, a front row of supporting columns and a rear row of supporting columns, wherein the front row of supporting columns and the rear row of supporting columns are arranged on the bottom plate, the front row of supporting columns and the rear row of supporting columns are respectively connected with two ends of the top plate, and in the vertical direction, the heights of the front row of supporting columns are higher than those of the rear row of supporting columns.

The further scheme is that two positioning grooves are coaxially arranged, a first step groove is formed in one side, facing the first avoidance groove, of each positioning groove, and the first step grooves are respectively communicated with the positioning grooves and the first avoidance grooves; a second stepped groove is formed between the limiting block and the closest positioning groove and communicated with the positioning groove.

The valve plate riveting device further comprises a limiting pin press-mounting assembly, the limiting pin press-mounting assembly comprises a mounting plate, a press-mounting tool assembly, a pressure head and a press-mounting driving device, the press-mounting tool assembly and the press-mounting driving device are arranged in the extending direction of the mounting plate, the pressure head is located between the press-mounting tool assembly and the press-mounting driving device, and the press-mounting driving device drives the pressure head to move towards the press-mounting tool assembly.

The further scheme is that the press-fitting tool assembly comprises a positioning tool, a pressing tool and a limiting tool, the positioning tool is located between the pressing tool and the limiting tool, the limiting tool is located on one side close to the pressure head, a limiting groove is formed in the limiting tool, and the limiting groove corresponds to the pressure head.

The further scheme is that the compressing tool comprises a compressing seat, a compressing block, a second rotating shaft and a limiting shaft, the compressing seat is provided with a second avoiding groove, the second rotating shaft and the limiting shaft are respectively arranged on two sides of the second avoiding groove, two ends of the compressing block are respectively connected with the second rotating shaft and the limiting shaft, the compressing block can rotate around the second rotating shaft, a compressing groove and a locking groove are formed in the compressing block, the compressing groove is located between the locking groove and the second rotating shaft, the compressing groove is communicated with the second avoiding groove, and the locking groove is connected with the limiting shaft in a matched mode.

The further scheme is that one side of the pressing block facing the positioning tool is provided with a wedge-shaped portion, the wedge-shaped portion is located on the circumferential direction of the pressing groove, the wedge-shaped portion protrudes from the side wall of the pressing block to one side of the positioning tool, a second inclined surface is arranged on the wedge-shaped portion, and the second inclined surface gradually inclines towards one side away from the positioning tool towards the center direction of the pressing groove.

Drawings

Fig. 1 is a structural diagram of an embodiment of the present invention.

Fig. 2 is the structure diagram of the valve plate riveting component in the embodiment of the present invention.

Fig. 3 is the structure diagram of riveting tools and EGR valve in the embodiment of the invention.

Fig. 4 is the embodiment of the utility model provides an in the embodiment of the structure chart of riveting tools, anchor clamps compress tightly subassembly and valve block fixed subassembly.

Fig. 5 is a top view of the riveting tool in the embodiment of the present invention.

Fig. 6 is a cross-sectional view at a-a in fig. 5.

Fig. 7 is a cross-sectional view at B-B in fig. 5.

Fig. 8 is a structural diagram of a limit pin press-fitting assembly in an embodiment of the present invention.

Fig. 9 is an enlarged view at C in fig. 8.

Fig. 10 is an exploded view of a press fitting tool assembly and an EGR valve in an embodiment of the invention.

Fig. 11 is an enlarged view at D in fig. 10.

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

Detailed Description

Referring to fig. 1, the valve plate riveting device of the exhaust gas recirculation valve assembly provided by the embodiment includes a workbench 1, a protective cover 11, a valve plate riveting component 2, a limit pin press-fitting component 3, and three material rack temporary storage racks 4. The protection casing 11 sets up around workstation 1, and valve block riveting subassembly 2, spacer pin pressure equipment subassembly 3 and three work or material rest temporary storage rack 4 all set up on workstation 1, and are located protection casing 11. One side of the working platform 1 is provided with a code scanning gun 12 for scanning a bar code on a valve body 51 in the EGR valve assembly 5. For convenience of explanation, the left-right direction of the table 1 is defined as the X direction, the front-rear direction of the table 1 is defined as the Y direction, and the height direction of the table 1 is defined as the Z direction.

Referring to fig. 2, valve sheet riveting assembly 2 includes an inclined mount 21, a riveting tool 22, a clamp pressing assembly 23, and a valve sheet fixing assembly 24.

The tilt mount 21 includes a top plate 211, a bottom plate 212, a front row of support posts 213, and a rear row of support posts 214. The bottom plate 212 is horizontally arranged on the workbench 1, the front row of supporting columns 213 and the rear row of supporting columns 214 are arranged on the bottom plate 212 in the Y direction, and the front row of supporting columns 213 and the rear row of supporting columns 214 are respectively connected with two ends of the top plate 211 in the Y direction. The bottom surface of the top plate 211 is provided with a plurality of ear seats and a plurality of connecting pins, the front row of supporting columns 213 are connected with the ear seats through the connecting pins, and the rear row of supporting columns 214 are connected with the ear seats through the connecting pins. The height of the front row of support columns 213 is higher than that of the rear row of support columns 214 in the vertical direction, so that both ends of the top plate 211 in the Y direction have different heights, i.e., the top plate 211 is inclined downward from one end near the front row of support columns 213 to one end near the rear row of support columns 214. The bottom plate 212 is further provided with a hollow sleeve for placing a shaft tool, and the shaft tool is inserted into the sleeve. The front row of support columns 213 and the rear row of support columns 214 each include at least two support columns, and the two support columns are arranged in the X direction.

Referring to fig. 3 to 7, the workpiece to which the valve plate 52 is riveted according to the present embodiment is an EGR valve assembly 5, i.e., an exhaust gas recirculation valve assembly. The EGR valve assembly 5 includes a valve body 51, a valve plate 52, a through bush 53, a blind bush 54, and an operating arm assembly 55. The two sides of the valve body 51 are respectively provided with a convex part 511, and a bushing mounting hole is arranged in the convex part 511 and communicated with the inside of the valve body. The valve plate 52 is arranged in the valve body 51 in advance, the through bush 53 and the blind bush 54 are respectively pressed in the two bush mounting holes, so that two ends of the valve plate 52 are respectively fixedly connected through the through bush 53 and the blind bush 54, a preset gap is reserved between the valve plate 52 and the two bushes, and the valve plate 52 can rotate around the axial direction of the valve plate 52 relative to the valve body 51. The steering arm assembly 55 comprises a steering shaft assembly 551 and a steering handle 552, the steering handle 552 being disposed at a first end of the steering shaft assembly 551, the steering shaft assembly 551 comprising a steering shaft and two resilient rings, the resilient rings being disposed around the steering shaft with a surface slightly higher than a surface of the steering shaft. The middle part of the valve plate 52 is provided with a through hole, the second end of the operating shaft assembly 551 passes through the through bush 53 and is inserted into the through hole of the valve plate 52, the second end of the operating shaft assembly 551 is inserted into the blind bush 54, the elastic ring is positioned inside the through bush 53, and the elastic ring is in interference fit with the through bush 53, so that the operating shaft assembly 551 cannot be easily separated from the through bush 53. The diameter of the operating shaft is close to that of the through hole of the valve plate 52, when the operating shaft assembly 551 is inserted into the through hole of the valve plate 52, the valve plate 52 can synchronously rotate along with the operating shaft assembly 551, that is, the operating handle 552 can drive the operating shaft assembly 551 and the valve plate 52 to rotate together around the axial direction of the operating shaft assembly 551 relative to the valve body 51. The operating shaft assembly 551 is provided with two first riveting holes 5511, the wall of the through hole of the valve plate 52 is provided with two second riveting holes 521, and the first riveting holes 5511 and the second riveting holes 521 are corresponding and communicated with each other. The valve plate 52 can be driven by the control arm assembly 55 to rotate relative to the valve body 51, so that the first riveting hole 5511 and the second riveting hole 521 are opposite to the opening of the valve body 51, and subsequent riveting is facilitated.

The rivet tool 22 is provided on the top plate 211 and arranged obliquely in the oblique direction of the top plate 211. The riveting tool 22 is provided with a first avoiding groove 221, a limiting block 222 and two positioning grooves 223, the first avoiding groove 221 extends obliquely along the inclined direction of the top plate 211, the two positioning grooves 223 are respectively arranged on two sides of the extending direction of the first avoiding groove 221, the two positioning grooves 223 are coaxially arranged, and the positioning grooves 223 are communicated with the first avoiding groove 221. One side of the positioning groove 223 facing the first avoiding groove 221 is provided with a first step groove 224, the first step groove 224 is respectively communicated with the positioning groove 223 and the first avoiding groove 221, and the groove bottom of the first step groove 224 is located between the groove bottom of the positioning groove 223 and the groove bottom of the first avoiding groove 221. The positioning grooves 223 are used to support the through bush 53 and the blind bush 54 of the EGR valve assembly 5, respectively, the first step groove 224 is used to receive the projections 511 on both sides of the valve body 51, and the side wall of the first step groove 224 abuts the end surface of the projection 511, and the through bush 53 and the blind bush 54 are located in the corresponding projections 511, respectively.

One side of the positioning groove 223 on the right side, which faces away from the first avoiding groove 221, is provided with a limiting block 222, a second stepped groove 225 is formed between the limiting block 222 and the positioning groove 223, and the second stepped groove 225 is communicated with the positioning groove 223. The groove bottom of the second step groove 225 is in the same plane as the groove bottom of the first step groove 224. The stopper 222 is provided with a first inclined surface 2221, and an extension line of the first inclined surface 2221 intersects an axis of the positioning groove 223 at an acute angle in a radial plane of the positioning groove 223. Specifically, the first inclined surface 2221 is inclined downward from an end close to the positioning groove 223 to an end away from the positioning groove 223, that is, the first inclined surface 2221 is arranged in parallel with the side wall of the handle 552, so that the handle 552 can be placed on the stopper 222 at the second predetermined angle, and at this time, the two first rivet holes 5511 of the handle shaft assembly 551 just face the opening of the valve body 51.

The second stepped slot 225 is used to clear the clamp 25 of the pick-up manipulator arm assembly 55, with the clamping end of the clamp 25 clamped to the manipulator shaft assembly 551 and located near the end of the manipulator handle 552. The operation handle 552 is provided with a mounting hole, a first plane is arranged in the mounting hole, a second plane is arranged on the peripheral wall of one end of the operation shaft in the operation shaft assembly 551, and the first plane and the second plane are parallel and adjacent to each other and play a role in preventing the operation handle 552 from rotating relative to the operation shaft.

The jig pressing assembly 23 includes a control handle and a lower pressing head 231, the lower pressing head 231 is located above the first escape groove 221, and the control handle is manually operated to drive the lower pressing head 231 to move toward the first escape groove 221. The clamp compression assembly 23 is conventional in the art and the details thereof will not be described herein.

Valve plate fixing assembly 24 includes a fixing base 241, a first rotating shaft 242, a pressing rod 243, an oscillating member 244, a fixing shaft 245, a movable shaft 246 and an elastic member 247. Both ends of the swinging member 244 are connected to the first rotating shaft 242 and the pressing rod 243, respectively, specifically, the fixing seat 241 is disposed at the left side of the first avoiding groove 221, an opening is disposed on the fixing seat 241, one end of the swinging member 244 is embedded into the opening, both ends of the first rotating shaft 242 are located at both sides of the opening, and the middle of the first rotating shaft 242 passes through one end of the swinging member 244, so that the swinging member 244 can rotate around the first rotating shaft 242 to the first avoiding groove 221. The pressing rod 243 and the fixed shaft 245 are both located on a side of the swinging member 244 facing the first avoiding groove 221. Specifically, the fixing shaft 245 is disposed at one side of the jig compressing assembly 23, and the fixing shaft 245 is located between the first rotating shaft 242 and the first escape groove 221 in the width direction of the first escape groove 221. The movable shaft 246 is disposed on the middle of the extending direction of the swinging member 244, that is, the movable shaft 246 is located between the first rotation shaft 242 and the pressing rod 243. The first rotating shaft 242, the fixed shaft 245, and the movable shaft 246 are arranged in parallel with each other. Both ends of the elastic member 247 are connected to the fixed shaft 245 and the movable shaft 246, respectively, and the elastic member 247 is preferably a spring bar. The pressing rod 243 is perpendicular to the swinging member 244, and the elastic member 247 can pull the swinging member 244 and the pressing rod 243 to rotate towards the first avoiding groove 221, so that the pressing rod 243 moves from the end of the first avoiding groove 221 to the upper side of the first avoiding groove 221. In the vertical direction, the height of the pressing rod 243 is higher than the height of the center of the positioning groove 223, so that the pressing rod 243 can act on the upper part of the through hole of the valve sheet 52 and push the valve sheet 52 to turn upwards, and the valve sheet 52 can be placed at a first preset angle. At this time, the lever arm assembly 55 may be installed and the lever 552 is placed on the first inclined surface 2221 of the stopper 222 such that the lever 552 is placed at the second preset angle. Then, the valve plate fixing assembly 24 can be rotated reversely, so that the pressing rod 243 moves out of the valve body 51, and at this time, the valve plate 52 continues to maintain the first preset angle under the action of the operating arm assembly 55, that is, the first riveting hole 5511 and the second riveting hole 521 are aligned to the opening of the valve body 51, and at this time, the riveting operation can be performed. Moving the press rod 243 out of the valve body 51 and riveting is performed, which is beneficial to freeing up enough operating space for riveting operation.

In order to facilitate the rotation of the swinging member 244 in the opposite direction, a handle 248 is provided on the swinging member 244, the handle 248 is located between the movable shaft 246 and the pressing rod 243, and the distance from the handle 248 to the pressing rod 243 in the extending direction of the swinging member 244 is smaller than the distance from the handle 248 to the movable shaft 246, so that the swinging member 244 can be driven to rotate back to the valve body 51 with a small force, and the pressing rod 243 is separated from the valve plate 52.

Referring to fig. 8 to 11, the stop pin press-fitting assembly 3 includes a mounting plate 31, a press-fitting tool assembly 32, a press head 33, and a press-fitting driving device 34. The mounting plate 31 is horizontally arranged on the workbench 1, the press-fitting tool assembly 32 and the press-fitting driving device 34 are arranged on the mounting plate 31 along the X direction, the press head 33 is positioned between the press-fitting tool assembly 32 and the press-fitting driving device 34, and the press head 33 is driven by the press-fitting driving device 34 to move towards the press-fitting tool assembly 32.

The press-fitting tool assembly 32 comprises a flat plate 321, a positioning tool 322, a pressing tool 323 and a limiting tool 324, wherein handles are arranged on two sides of the flat plate 321, and the press-fitting tool assembly 32 can move integrally conveniently. The positioning tool 322, the pressing tool 323 and the limiting tool 324 are sequentially arranged on the flat plate 321 along the X direction, that is, the positioning tool 322 is located between the pressing tool 323 and the limiting tool 324, and the limiting tool 324 is located on one side close to the press head 33. The positioning tool 322 comprises an annular flange part, and the valve body 51 is sleeved on the annular flange part. Limiting grooves 3241 are formed in the limiting tool 324, the limiting grooves 3241 extend along the X direction and are used for supporting the limiting pins 56, the limiting grooves 3241 correspond to the limiting pin mounting holes of the pressure head 33 and the valve body 51 respectively, and the limiting pins 56 can be conveniently pressed into the limiting pin mounting holes of the valve body 51.

The pressing tool 323 comprises a pressing seat 3231, a pressing block 3232, a second rotating shaft 3233 and a limiting shaft 3234, the pressing seat 3231 extends along the Y direction, and a second avoiding groove 32311 is formed in the middle of the pressing seat 3231. The second rotating shaft 3233 and the limiting shaft 3234 are respectively arranged on two sides of the second avoiding groove 32311 along the Y direction, and the second rotating shaft 3233 and the limiting shaft 3234 both extend along the X direction to the positioning tool 322. The second rotation shaft 3233 and the stopper shaft 3234 have equal heights in the vertical direction. Two ends of the pressing block 3232 are connected to the second rotating shaft 3233 and the limiting shaft 3234, and the pressing block 3232 can rotate around the second rotating shaft 3233. The pressing block 3232 is provided with a pressing groove 32321 and a locking groove 32322 along the extending direction of the pressing block 3232, the pressing groove 32321 is located between the locking groove 32322 and the second rotating shaft 3233, and notches of the pressing groove 32321 and the locking groove 32322 are arranged downwards. The pressing groove 32321 is pressed on the blind bush 54 of the EGR valve, and the locking groove 32322 is in fit connection with the limiting shaft 3234 and plays a role in preventing the EGR valve from moving upwards.

In order to further fix the EGR valve, a wedge portion 32323 is provided on a side of the pressing block 3232 facing the positioning tool 322, the wedge portion 32323 is located in a circumferential direction of the pressing groove 32321, and the wedge portion 32323 protrudes from a side wall surface of the pressing block 3232, that is, the wedge portion 32323 protrudes toward the positioning tool 322, and is configured to abut on an end surface of the protruding portion 511 on the side of the valve body 51. The wedge portion 32323 is provided with a second inclined surface, the second inclined surface is inclined towards the center direction of the pressing groove gradually towards one side far away from the positioning tool, namely the second inclined surface is inclined downwards and outwards gradually from a position far away from the center of the pressing groove 32321, so that the thickness of the upper portion of the wedge portion 32323 is larger than that of the lower portion of the wedge portion 32323, and the upper portion and the lower portion are aligned with the vertical direction when the pressing block 3232 presses the EGR valve. The arrangement of wedge portion 32323 is favorable to reducing the clearance between compact heap 3232 lateral wall and the valve body 51 bellying terminal surface, under the cooperation of location frock 322, utilizes the effect of frictional force, realizes fixed valve body 51's effect. The provision of the second inclined surface allows the hold down 3232 to be easily depressed.

The valve plate riveting assembly 2 of the embodiment positions the EGR valve by means of the clamp pressing assembly 23 and the riveting tool 22, temporarily fixes the valve plate 52 according to a first preset angle by extending the pressing rod 243 into the EGR valve, and temporarily fixes the control arm assembly 55 according to a second preset angle by the limiting block 222 arranged on the riveting tool 22, so that the first riveting hole 5511 and the second riveting hole 521 are communicated with each other and face the opening of the valve body 51, which is beneficial to facilitating the riveting fixation of the valve plate 52 and the control arm assembly 55; therefore, the valve plate riveting component 2 of the embodiment can be compatible with ERG valves of various different models, and before riveting EGR valves of different models, only the proper riveting tool 22 needs to be replaced to realize the positioning of EGR valves of different models, and then riveting is carried out under the combined action of the valve plate fixing component 24 and the limiting block 222.

The limit pin press-fitting assembly 3 of the present embodiment performs positioning of the EGR valve by the positioning tool 322 and the pressing tool 323, supports the limit pin 56 to be press-fitted by the limit tool 324, and completes press-fitting of the limit pin 56 under the action of the pressure head 33; therefore, the limiting pin press-fitting component 3 of the embodiment can be compatible with various EGR valves of different models, and before press-fitting EGR valves of different models, only the appropriate positioning tool 322 needs to be replaced, and under the combined action of the pressing tool 323, positioning of EGR valves of different models is realized, so that press-fitting of the limiting pin 56 is facilitated.

In summary, the utility model has the advantages that the EGR valve can be obliquely placed through the obliquely arranged riveting tool, so that the automatic rivet gun can be conveniently aligned with the riveting hole in a comfortable posture by an operator, the work efficiency can be improved, and the probability of lumbar strain of the operator can be reduced; the pressure rod is arranged and used for extending into the EGR valve and pushing the valve plate to be turned upwards to the closed state of the EGR valve so as to temporarily fix the position of the valve plate, manual fixing operation is replaced, the valve plate can be effectively prevented from shaking back and forth, and the second riveting hole of the valve plate can just face the opening of the EGR valve; be used for installing the manipulator arm assembly back through setting up the stopper, utilize the stopper restriction handle to rotate, play the effect of temporary fixation control shaft subassembly promptly for even depression bar and valve block separation, the epaxial first riveting hole of control shaft also can just to and communicate with the second riveting hole of valve block, the riveting operation of being convenient for.

Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, and are not intended to limit the scope of the present invention, as those skilled in the art will appreciate that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended to cover all such modifications, equivalents, and improvements as fall within the true spirit and scope of the invention.

Claims (10)

1. Valve block riveting set of exhaust gas recirculation valve assembly, its characterized in that: the valve plate riveting assembly comprises an inclined mounting seat, a riveting tool, a clamp pressing assembly and a valve plate fixing assembly;

the inclined mounting seat comprises a top plate, and two ends of the top plate have different heights in the vertical direction;

the riveting tool is arranged on the top plate, a first avoidance groove, a limiting block and two positioning grooves are formed in the riveting tool, the first avoidance groove extends along the inclined direction of the top plate, the two positioning grooves are respectively formed in two sides of the extending direction of the first avoidance groove, the positioning grooves are communicated with the first avoidance groove, and the limiting block is located on one side, back to the first avoidance groove, of the positioning grooves;

the clamp pressing assembly comprises a lower pressing head, and the lower pressing head is positioned above the first avoidance groove;

the valve plate fixing assembly comprises a pressing rod, the pressing rod can move from the end part of the first avoidance groove to the position above the first avoidance groove, and the height of the pressing rod is higher than that of the circle center of the positioning groove in the vertical direction.

2. The valve sheet riveting device of claim 1, wherein:

the limiting block is provided with a first inclined surface, and the first inclined surface is intersected with the axis of the positioning groove at an acute angle in the radial plane of the positioning groove.

3. The valve sheet riveting device of claim 1, wherein:

the fixed subassembly of valve block still includes first pivot, swing piece, fixed axle, loose axle and elastic component, first pivot sets up the first one side of dodging the groove, the both ends of swing piece respectively with first pivot the compression link, swing piece can wind first pivot is to the first groove of dodging is rotatory, the depression bar with the fixed axle all is located swing piece towards the first one side of dodging the groove, the fixed axle is located first pivot between the groove is dodged first, the loose axle sets up on the swing piece and is located first pivot with between the depression bar, the both ends of elastic component respectively with the fixed axle the loose axle is connected.

4. The valve sheet riveting device of claim 3, wherein:

the swing piece is provided with a handle, the handle is positioned between the movable shaft and the pressure rod, and the distance from the handle to the pressure rod is smaller than the distance from the handle to the movable shaft in the extending direction of the swing piece.

5. The valve sheet riveting device of claim 1, wherein:

the inclined mounting base further comprises a bottom plate, a front row of supporting columns and a rear row of supporting columns, wherein the front row of supporting columns and the rear row of supporting columns are arranged on the bottom plate, the front row of supporting columns and the rear row of supporting columns are respectively connected with two ends of the top plate, and the height of the front row of supporting columns is higher than that of the rear row of supporting columns in the vertical direction.

6. The valve sheet riveting device of claim 2, wherein:

the two positioning grooves are coaxially arranged, a first step groove is formed in one side, facing the first avoidance groove, of each positioning groove, and the first step grooves are respectively communicated with the positioning grooves and the first avoidance grooves; the limiting block is closest to the positioning groove, a second stepped groove is formed between the limiting block and the positioning groove, and the second stepped groove is communicated with the positioning groove.

7. The valve plate riveting device according to any one of claims 1 to 6, wherein:

valve block riveting set still includes spacing round pin pressure equipment subassembly, spacing round pin pressure equipment subassembly includes mounting panel, pressure equipment frock subassembly, pressure head and pressure equipment drive arrangement, pressure equipment frock subassembly with pressure equipment drive arrangement follows the extending direction of mounting panel is arranged and is arranged, the pressure head is located pressure equipment frock subassembly with between the pressure equipment drive arrangement, pressure equipment drive arrangement drive the pressure head to pressure equipment frock subassembly removes.

8. The valve sheet riveting device of claim 7, wherein:

the press-fitting tool assembly comprises a positioning tool, a pressing tool and a limiting tool, wherein the positioning tool is located between the pressing tool and the limiting tool, the limiting tool is located at one side close to the pressure head, a limiting groove is formed in the limiting tool, and the limiting groove corresponds to the pressure head.

9. The valve sheet riveting device of claim 8, wherein:

the compressing tool comprises a compressing seat, a compressing block, a second rotating shaft and a limiting shaft, wherein the compressing seat is provided with a second avoiding groove, the second rotating shaft and the limiting shaft are respectively arranged on two sides of the second avoiding groove, two ends of the compressing block are respectively connected with the second rotating shaft and the limiting shaft, the compressing block can wind the second rotating shaft to rotate, a compressing groove and a locking groove are formed in the compressing block, the compressing groove is located between the locking groove and the second rotating shaft, the compressing groove is communicated with the second avoiding groove, and the locking groove is connected with the limiting shaft in a matched mode.

10. The valve sheet riveting device of claim 9, wherein:

the locating tool is characterized in that a wedge-shaped part is arranged on one side, facing the locating tool, of the pressing block, the wedge-shaped part is located in the circumferential direction of the pressing groove, the wedge-shaped part protrudes towards one side of the locating tool from the side wall of the pressing block, a second inclined surface is arranged on the wedge-shaped part, and the second inclined surface gradually inclines towards one side, far away from the locating tool, of the center direction of the pressing groove.

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