CN108907686B - Automatic mechanism for assembling adjusting bolt on valve rocker and working method thereof - Google Patents
Automatic mechanism for assembling adjusting bolt on valve rocker and working method thereof Download PDFInfo
- Publication number
- CN108907686B CN108907686B CN201810988482.4A CN201810988482A CN108907686B CN 108907686 B CN108907686 B CN 108907686B CN 201810988482 A CN201810988482 A CN 201810988482A CN 108907686 B CN108907686 B CN 108907686B
- Authority
- CN
- China
- Prior art keywords
- adjusting bolt
- bolt
- inner hexagonal
- nut
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention relates to an automatic mechanism for assembling an adjusting bolt on a valve rocker and a working method thereof. Aiming at an adjusting bolt with a special structure, automatic feeding and positioning before installation are realized by adopting flexible devices such as high-pressure airflow and a flexible radial plate, a two-stage telescopic mechanism, a hollow motor, a telescopic spring and the like are introduced to ensure that an inner hexagonal wrench can be effectively inserted into an inner hexagonal deep hole at the bottom of the adjusting bolt, and a tightening device of the bolt and a nut is integrated and time-sharing multiplexed. The invention can realize the automatic assembly of the whole process of the adjusting bolt, the nut and the rocker arm, changes the prior full manual operation, has good mechanism reliability, strong adaptability and relatively low requirement on environment, and is easy to be freely combined with other automatic production links.
Description
Technical Field
The invention relates to an automatic mechanism for assembling an adjusting bolt on a valve rocker and a working method thereof, belonging to the technical field of automatic assembling mechanisms.
Background
The valve rocker is one of key parts of the engine, and the valve is timely opened and closed by matching the rotation of the camshaft, so that the air intake and the air exhaust of the engine are realized. One of the valve rocker structures is shown in fig. 2, and includes a rocker arm, a roller and a roller shaft, and an adjusting bolt mounting hole is processed at one end of the rocker arm for assembling an adjusting bolt and a mating nut. The adjusting bolt structure is shown in fig. 3 and comprises a movable cap and a bolt rod, wherein the movable cap is cylindrical and is provided with a top plane and an incomplete inner spherical surface at the bottom; the top of the bolt rod is a ball head, the rod-shaped part is full thread, and the bottom of the thread is processed with an inner hexagonal deep hole. During assembly, the adjusting bolt is firstly screwed into the adjusting bolt mounting hole gradually until a circle of threads are left for later adjustment, and finally the nut is screwed in and screwed down.
Because adjusting bolt's structural particularity, all assemble adjusting bolt and nut on the rocking arm through manual operation on the current production line, inefficiency and precision can not obtain the assurance, along with the rising of cost of labor and the promotion of the full production line degree of automation of automobile manufacturing, the demand of automation of this production link is more and more urgent. Although the prior art has been studied about the automatic assembly of the adjusting bolt, for example, chinese patents CN201711235356.3 and CN201710267881.7 disclose an automatic assembly machine for the adjusting bolt, but the top of the adjusting bolt as the work object has no movable cap, and the conventional automatic feeding and tightening methods for bolt and nut are adopted, which are not suitable for the assembly of the adjusting bolt shown in fig. 3.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an automatic mechanism for assembling an adjusting bolt on a valve rocker.
The invention provides a working method of the automatic mechanism for assembling the adjusting bolt on the valve rocker.
Summary of the invention:
according to the automatic mechanism for assembling the adjusting bolt on the valve rocker and the working method thereof, the automatic feeding and the initial positioning of the adjusting bolt are realized by utilizing the cooperation of high-pressure airflow and a flexible pipeline, and the time-sharing assembly of the adjusting bolt and a nut on the same device is completed through the effective combination of a plurality of mechanical structures.
The technical scheme of the invention is as follows:
an automatic mechanism for assembling an adjusting bolt on a valve rocker comprises a bolt feeding system, a rocker supporting seat, a composite tightening device, an installation platform and an installation bottom plate; the mounting bottom plate is horizontally arranged on the ground; the mounting platform is horizontally arranged on the upper surface of the mounting base plate, and a through hole is formed in the mounting hole of the adjusting bolt;
the bolt feeding system comprises a conveying pipeline and a flexible spoke plate; the conveying pipeline is filled with high-pressure airflow; the flexible radial plates are in a mode of radiating from outside to inside, one end of each flexible radial plate is fixedly connected with the tail end of the conveying pipeline, one end of each flexible radial plate is suspended near the axis of the conveying pipeline, the flexible radial plates are uniformly distributed along the circumferential direction of the conveying pipeline, a circular outlet is formed in the circumferential direction of the conveying pipeline, and the outlet direction is coaxial with the adjusting bolt mounting hole.
The rocker arm supporting seat is mainly characterized by comprising a bottom plane, a through hole, an 1/4 cylindrical surface and a supporting surface; the bottom plane is fixedly connected with the mounting platform through the through hole by a bolt; the 1/4 face of cylinder and the holding surface respectively with adjusting bolt mounting hole terminal surface and the face of cylinder of gyro wheel outside laminating, realize the incomplete location of rocking arm combination.
The composite tightening device comprises a lifting mechanism, a bolt tightening mechanism and a nut tightening mechanism; the lifting mechanism comprises a primary telescopic cylinder, a secondary telescopic cylinder, a guide rail and a sliding block; the cylinder body part of the primary telescopic cylinder is fixedly connected with the mounting bottom plate; the cylinder body part of the secondary telescopic cylinder and the guide rail are respectively fixedly connected with two opposite side surfaces of the rotating motor; and a piston rod of the secondary telescopic cylinder and the sliding block are respectively and fixedly connected with two opposite side edges of the hollow motor.
The bolt tightening mechanism comprises a rotating motor, a driving rod, a driving sleeve, a telescopic spring and an inner hexagonal wrench; the bottom of the rotating motor is fixedly connected with the end part of the piston rod of the primary telescopic cylinder; one end of the driving rod is fixedly connected with an output shaft of the rotating motor, and the other end of the driving rod is fixedly connected with the driving sleeve; the driving sleeve and the inner hexagonal wrench are circumferentially positioned through a hexagonal shaft and a hexagonal hole; the inner hexagonal wrench is coaxial with the adjusting bolt mounting hole. The nut screwing mechanism comprises a hollow motor, an output shaft and a driving cylinder; the nut screwing mechanism comprises a hollow motor, an output shaft and a driving cylinder; the output shaft is of a cylindrical structure, one end of the output shaft is fixedly connected with the hollow motor rotor, and the other end of the output shaft is fixedly connected with the driving cylinder; the driving cylinder is of a stepped cylindrical structure, wraps the bolt tightening mechanism in the driving cylinder, and is coaxial with the inner hexagonal wrench.
According to the invention, the outer diameter of the movable cap of the adjusting bolt is preferably slightly smaller than the inner diameter of the conveying pipeline, so that high-pressure airflow in the conveying pipeline can effectively act on the end face of the adjusting bolt while the adjusting bolt is ensured to move smoothly in the conveying pipeline.
Further preferably, the adjusting bolt takes the posture that the bolt rod is in front and the movable cap is in back along the movement direction of the high-pressure airflow in the conveying pipeline, so that the bolt rod reaches the round outlet formed by the flexible radial plate before the movable cap.
Further preferably, the inner diameter of the circular outlet formed by the flexible web plate is slightly smaller than the outer diameter of the bolt rod of the adjusting bolt.
According to the invention, the inner hexagonal wrench main body is a hexagonal prism, a round chamfer is processed at the upper end of the hexagonal prism, an E-shaped tool withdrawal groove is processed near the upper end, and a cylindrical boss with the diameter larger than the circumscribed circle of the hexagon is arranged near the lower end and can slide up and down in the inner cylindrical surface of the driving sleeve.
According to the invention, the inner diameter of the expansion spring is preferably larger than the radius of the hexagonal circumscribed circle of the inner hexagonal wrench, and the outer diameter of the expansion spring is preferably smaller than the radius of the outer circle of the cylindrical boss of the inner hexagonal wrench.
Preferably, the extension spring is arranged in a closed space defined by the driving rod, the inner wall of the driving sleeve, the surface of the hexagonal prism of the hexagon socket wrench and the lower surface of the cylindrical boss of the hexagon socket wrench.
According to the invention, the upper port of the driving cylinder is preferably provided with an inner hexagonal shallow hole, and the circumferential dimension and the axial dimension of the inner hexagonal shallow hole are respectively slightly larger than and smaller than the corresponding dimension of the nut.
The working method of the automatic mechanism for assembling the adjusting bolt on the valve rocker comprises the following steps:
1) the high-pressure air flow sends the adjusting bolt to the port of the conveying pipeline, keeps a vertical downward posture and tightly presses the adjusting bolt at the inlet of the mounting hole of the adjusting bolt, wherein the movable cap is positioned in the conveying pipeline, and the bolt rod is clamped by a plurality of flexible radial plates;
2) the first-stage telescopic cylinder acts to extend the piston rod to drive the bolt tightening mechanism and the nut tightening mechanism to ascend, and the second-stage telescopic cylinder retracts completely to enable the end part of the inner hexagonal wrench processed with the round chamfer to be higher than the driving cylinder and to be attached to the inner hexagonal deep hole at the bottom of the bolt rod; the piston rod continues to extend, and the end part of the inner hexagonal wrench is inserted into the inner hexagonal deep hole; if the insertion is not smooth, the expansion spring is in a compressed state;
3) rotating the motor to screw the adjusting bolt into the adjusting bolt mounting hole; if the socket head wrench cannot smoothly go in and out in the previous step, the socket head wrench automatically slides into the internal hexagon deep hole under the pressure action of the telescopic spring in the rotating process and enters the screwing process of the thread;
4) the screwing motor continuously rotates until screwing is carried out, and then the motor reversely rotates for one circle; whether the adjusting bolt is screwed down or not can be judged according to the magnitude of the current in the process;
5) the primary telescopic cylinder retracts, the piston rod retracts, the bolt tightening mechanism and the nut tightening mechanism are driven to descend, and the inner hexagonal wrench is disconnected with the inner hexagonal deep hole;
6) the nut is conveyed to the position right above the inner hexagonal wrench by an external feeding mechanism and slides down to the position of the inner hexagonal shallow hole of the driving cylinder through the prismatic surface of the inner hexagonal wrench;
7) the first-stage telescopic cylinder acts again to extend the piston rod, and the end part of the inner hexagonal wrench is inserted into the inner hexagonal deep hole or tightly pressed on the edge of the inner hexagonal deep hole;
8) the second-stage telescopic cylinder extends out and drives the nut screwing mechanism to ascend together with the guide rail and the sliding block, and the driving cylinder drives the nut to ascend to the lower end face of the adjusting bolt along the inner hexagonal wrench;
9) the hollow motor rotates to drive the output shaft and the driving cylinder to rotate, and the nut is screwed into the adjusting bolt through the inner hexagonal shallow hole until the nut is tightly pressed with the rocker arm;
10) the second-stage telescopic cylinder retracts completely, and the first-stage telescopic cylinder retracts to complete one-time assembly.
The invention has the beneficial effects that:
1. according to the automatic mechanism for assembling the adjusting bolt on the valve rocker and the working method thereof, the whole process automatic assembly of the adjusting bolt, the nut and the rocker can be realized, and the original full manual operation is changed;
2. in the process, the whole reliability and adaptability of the mechanism are improved by adopting high-pressure airflow, flexible radial plates, telescopic springs and other flexible elements;
3. the automatic mechanism for assembling the adjusting bolt on the valve rocker has the advantages of simple structure, relatively low requirement on environment, good flexibility and easiness in connecting with other automatic production links.
Drawings
FIG. 1 is a schematic structural view of an automatic mechanism for assembling an adjusting bolt to a valve rocker according to the present invention;
FIG. 2 is a schematic view of a rocker arm assembly;
FIG. 3 is a schematic view of an adjusting bolt;
FIG. 4 is a schematic structural view of a bolt feeding system according to the present invention;
FIG. 5 is a schematic view of a rocker arm mount of the present invention;
FIG. 6 is a schematic view of the manner in which the rocker arm assembly is secured within the rocker arm mount of the present invention;
FIG. 7 is a schematic view of the composite tightening apparatus of the present invention;
FIG. 8 is a schematic view of the lifting mechanism of the present invention;
FIG. 9 is a schematic structural view of the bolt tightening mechanism of the present invention;
FIG. 10 is a cross-sectional view of FIG. 9;
FIG. 11 is a schematic structural view of the nut tightening mechanism of the present invention;
fig. 12 is a schematic structural view of the allen wrench.
Wherein, 1-rocker arm combination; 1-1, rocker arm; 1-2, rollers; 1-3, roller shaft; 1-4, adjusting bolt mounting holes; 2-adjusting the bolt; 2-1, a movable cap; 2-1-1, top plane; 2-1-2, incomplete inner spherical surface; 2-2, bolt bar; 2-2-1, a bulb; 2-2-2, screw thread; 2-2-3 of an inner hexagonal deep hole; 3-bolt feed system; 3-1, conveying pipelines; 3-2, flexible webs; 4-rocker arm supporting seat; 4-1, bottom plane; 4-2, through holes; 4-3, 1/4 cylindrical surfaces; 4-4, a support surface; 5-a composite tightening device; 5-1, a lifting mechanism; 5-1-1, a primary telescopic cylinder; 5-1-2, a secondary telescopic cylinder; 5-1-3, guide rail; 5-1-4, a slide block; 5-2, a bolt tightening mechanism; 5-2-1, a rotating electrical machine; 5-2-2, a drive rod; 5-2-3, a driving sleeve; 5-2-4, a telescopic spring; 5-2-5, an inner hexagonal wrench; 5-2-5-1, hexagonal prism; 5-2-5-2, boss; 5-2-5-3, round chamfer; 5-2-5-4, E-shaped tool withdrawal grooves; 5-3, a nut tightening mechanism; 5-3-1, a hollow motor; 5-3-2 and an output shaft; 5-3-3, a driving cylinder; 5-3-3-1, inner hexagonal shallow holes; 6, mounting a platform; 7-installing a bottom plate.
Detailed Description
The invention is further described below, but not limited thereto, with reference to the following examples and the accompanying drawings.
Example 1
As shown in fig. 1, an automatic mechanism for assembling an adjusting bolt on a valve rocker comprises a bolt feeding system 3, a rocker supporting seat 4, a composite tightening device 5, an installation platform 6 and an installation bottom plate 7; the mounting bottom plate 7 is horizontally arranged on the ground; the mounting platform 6 is horizontally arranged on the upper surface of the mounting base plate 7, and through holes are formed in the positions 1-4 of the adjusting bolt mounting holes;
as shown in FIG. 4, the bolt feed system 3 includes a delivery conduit 3-1 and a flexible web 3-2; the conveying pipeline 3-1 is filled with high-pressure airflow; the flexible radial plates 3-2 are in a form of radiating from outside to inside, one end of each flexible radial plate is fixedly connected with the tail end of the conveying pipeline 3-1, one end of each flexible radial plate is suspended near the axis of the conveying pipeline, the flexible radial plates are uniformly distributed along the circumferential direction of the conveying pipeline, a circular outlet is formed in the circumferential line of the conveying pipeline, and the outlet direction is coaxial with the adjusting bolt mounting holes 1-4.
As shown in FIG. 5, the rocker arm support seat 4 is mainly characterized by comprising a bottom plane 4-1, a through hole 4-2, a 1/4 cylindrical surface 4-3 and a support surface 4-4; the bottom plane 4-1 is fixedly connected with the mounting platform 6 through the through hole 4-2 by a bolt; as shown in fig. 6, the 1/4 cylindrical surface 4-3 and the support surface 4-4 are respectively attached to the end surface of the adjusting bolt mounting hole 1-4 and the cylindrical surface of the outer side of the roller 1-2, so that incomplete positioning of the rocker arm assembly 1 is realized.
As shown in fig. 7, the composite tightening device 5 includes a lifting mechanism 5-1, a bolt tightening mechanism 5-2, and a nut tightening mechanism 5-3; as shown in fig. 8, the lifting mechanism 5-1 comprises a primary telescopic cylinder 5-1-1, a secondary telescopic cylinder 5-1-2, a guide rail 5-1-3 and a slide block 5-1-4; the end part of a piston rod of the primary telescopic cylinder 5-1-1 is fixedly connected with the bottom of the rotating motor 5-2-1; the cylinder body part of the secondary telescopic cylinder 5-1-2 and the guide rail 5-1-3 are respectively fixedly connected with two opposite side surfaces of the rotating motor 5-2-1; the piston rod of the secondary telescopic cylinder 5-1-2 and the slide block 5-1-4 are respectively fixedly connected with two opposite side edges of the hollow motor 5-3-1.
As shown in fig. 9, the bolt tightening mechanism 5-2 includes a rotating motor 5-2-1, a driving rod 5-2-2, a driving sleeve 5-2-3, a telescopic spring 5-2-4, and an inner hexagonal wrench 5-2-5, wherein the inner hexagonal wrench 5-2-5 is coaxial with the adjusting bolt mounting hole 1-4. One end of the driving rod 5-2-2 is fixedly connected with an output shaft of the rotating motor 5-2-1, and the other end of the driving rod is fixedly connected with the driving sleeve 5-2-3; as shown in fig. 10, the driving sleeve 5-2-3 and the socket wrench 5-2-5 are circumferentially positioned by a hexagonal shaft and a hexagonal hole. As shown in fig. 11, the nut tightening mechanism 5-3 includes a hollow motor 5-3-1, an output shaft 5-3-2 and a driving cylinder 5-3-3; the cylinder body part of the primary telescopic cylinder 5-1-1 is fixedly connected with the mounting bottom plate 7; the nut screwing mechanism 5-3 comprises a hollow motor 5-3-1, an output shaft 5-3-2 and a driving cylinder 5-3-3; the output shaft 5-3-2 is of a cylindrical structure, one end of the output shaft is fixedly connected with the rotor of the hollow motor 5-3-1, and the other end of the output shaft is fixedly connected with the driving cylinder 5-3-3; the driving cylinder 5-3-3 is of a stepped cylindrical structure, and the bolt tightening mechanism 5-2 is wrapped in the driving cylinder and is coaxial with the inner hexagonal wrench 5-2-5.
Example 2
The automatic mechanism for assembling the adjusting bolt on the valve rocker as described in embodiment 1, further, the outer diameter of the movable cap 2-1 of the adjusting bolt 2 is slightly smaller than the inner diameter of the conveying pipeline 3-1, so that the high-pressure airflow in the conveying pipeline 3-1 can effectively act on the top plane 2-1-1 of the adjusting bolt 2 while the adjusting bolt 2 is ensured to move smoothly in the conveying pipeline 3-1. The adjusting bolt 2 takes the posture that the bolt rod 2-2 is in front and the movable cap 2-1 is in back in the moving direction of the high-pressure airflow in the conveying pipeline 3-1, so that the bolt rod 2-2 reaches a round outlet formed by the flexible web plate 3-2 before the movable cap 2-1.
Example 3
In an automatic valve rocker arm mounting mechanism according to embodiment 1, further, the flexible web 3-2 forms a circular outlet having an inner diameter slightly smaller than an outer diameter of the bolt shaft 2-2 of the adjusting bolt 2. The main body of the inner hexagonal wrench 5-2-5 is a hexagonal prism 5-2-5-1, the upper end of the hexagonal prism is provided with a round chamfer 5-2-5-3, the upper end of the hexagonal prism is provided with an E-shaped tool withdrawal groove 5-2-5-4, the lower end of the hexagonal wrench is provided with a cylindrical boss 5-2-5-2, the diameter of the cylindrical boss is larger than the diameter of a hexagonal circumcircle, and the cylindrical boss can slide up and down in the inner cylindrical surface of the driving sleeve 5-2-3.
Example 4
The automatic mechanism for assembling the adjusting bolt on the valve rocker arm as described in embodiment 1, further comprising an expanding spring 5-2-4 having an inner diameter larger than the radius of the hexagonal circumscribed circle of the allen key 5-2-5 and an outer diameter smaller than the radius of the outer circle of the cylindrical boss 5-2-5-2 of the allen key 5-2-5. The expansion spring 5-2-4 is arranged in a closed space defined by the driving rod 5-2-2, the inner wall of the driving sleeve 5-2-3, the surface of the hexagonal prism 5-2-5-1 of the inner hexagonal wrench and the lower surface of the cylindrical boss 5-2-5-2 of the inner hexagonal wrench. The upper port of the driving cylinder 5-3-3 is provided with an inner hexagonal shallow hole 5-3-1, and the circumferential and axial dimensions are respectively slightly larger than and smaller than the corresponding dimensions of the nut.
Example 5
An operating method of an automatic mechanism for assembling an adjusting bolt to a valve rocker arm according to embodiments 1 to 4 includes the steps of:
1) the high-pressure air flow sends the adjusting bolt 2 to the port of the conveying pipeline 3-1, keeps a vertical downward posture and tightly presses the adjusting bolt at the inlet of an adjusting bolt mounting hole 1-4, wherein the movable cap 2-1 is positioned in the conveying pipeline 3-1, and the bolt rod 2-2 is clamped by a plurality of flexible radial plates 3-2;
2) the first-stage telescopic cylinder 5-1-1 acts to extend out the piston rod to drive the bolt tightening mechanism 5-2 and the nut tightening mechanism 5-3 to ascend, and the second-stage telescopic cylinder 5-1-2 retracts completely at the same time, so that the end part of the inner hexagonal wrench 5-2-5 which is provided with the round chamfer is higher than the driving cylinder 5-3-3 and is attached to the inner hexagonal deep hole at the bottom of the bolt rod 2-2; the piston rod continues to extend, and the end part of the inner hexagonal wrench 5-2-5 is inserted into the inner hexagonal deep hole 2-2-3; if the insertion is not smooth, the expansion spring 5-2-4 is in a compressed state;
3) rotating the motor 5-2-1 to screw the adjusting bolt 2 into the adjusting bolt mounting hole 1-4; if the inner hexagonal wrench 5-2-5 cannot smoothly go in and out in the previous step, the inner hexagonal wrench automatically slides into the inner hexagonal deep hole 2-2-3 under the pressure of the telescopic spring 5-2-4 in the rotating process and enters the screwing process;
4) the rotating motor 5-2-1 continuously rotates until the screw is screwed down, and then the rotating motor 5-2-1 reversely rotates for one circle; whether the adjusting bolt 2 is screwed down or not can be judged according to the magnitude of the current in the process;
5) the primary telescopic cylinder 5-1-1 retracts, the piston rod retracts, the bolt tightening mechanism 5-2 and the nut tightening mechanism 5-3 are driven to descend, and the connection between the inner hexagonal wrench 5-2-5 and the inner hexagonal deep hole 2-2-3 is disconnected;
6) the nut is conveyed to the position right above the inner hexagonal wrench 5-2-5 by an external feeding mechanism and slides downwards to the position of the inner hexagonal shallow hole 5-3-3-1 of the driving barrel 5-3-3 through the prismatic surface 5-2-5-1 of the inner hexagonal wrench;
7) the primary telescopic cylinder 5-1-1 acts again, the piston rod is extended out, and the end part of the inner hexagonal wrench 5-2-5 is inserted into the inner hexagonal deep hole 2-2-3 or is tightly pressed on the edge of the inner hexagonal deep hole;
8) the secondary telescopic cylinder extends out by 5-1-2, drives the nut screwing mechanism 5-3 to ascend together with the guide rail 5-1-3 and the slide block 5-1-4, and drives the nut to ascend to the lower end face of the adjusting bolt 2 along the inner hexagonal wrench 5-2-5 by the driving cylinder 5-3-3;
9) the hollow motor 5-3-1 rotates to drive the output shaft 5-3-2 and the driving cylinder 5-3-3 to rotate, and the nut and the adjusting bolt 2 are screwed through the inner hexagonal shallow hole 5-3-3-1;
10) the secondary telescopic cylinder 5-1-2 retracts completely, the primary telescopic cylinder 5-1-1 retracts, the initial state is recovered, and one-time assembly is completed.
Claims (6)
1. An automatic mechanism for assembling an adjusting bolt on a valve rocker is characterized by comprising a bolt feeding system, a rocker supporting seat, a composite tightening device, an installation platform and an installation bottom plate; the mounting bottom plate is horizontally arranged on the ground; the mounting platform is horizontally arranged on the upper surface of the mounting base plate, and a through hole is formed in the mounting hole of the adjusting bolt;
the bolt feeding system comprises a conveying pipeline and a flexible spoke plate; the conveying pipeline is filled with high-pressure airflow; the flexible radial plates are in a form of radiating from outside to inside, one end of each flexible radial plate is fixedly connected with the tail end of the conveying pipeline, one end of each flexible radial plate is suspended near the axis of the conveying pipeline, the plurality of flexible radial plates are uniformly distributed along the circumferential direction of the conveying pipeline, a circular outlet is formed at the circumference of the conveying pipeline, and the outlet direction is coaxial with the adjusting bolt mounting hole;
the composite tightening device comprises a lifting mechanism, a bolt tightening mechanism and a nut tightening mechanism; the lifting mechanism comprises a primary telescopic cylinder, a secondary telescopic cylinder, a guide rail and a sliding block; the bolt tightening mechanism comprises a rotating motor, a driving rod, a driving sleeve, a telescopic spring and an inner hexagonal wrench, and the bottom of the rotating motor is fixedly connected with the end part of a piston rod of the primary telescopic cylinder; the inner hexagonal wrench is coaxial with the adjusting bolt mounting hole; one end of the driving rod is fixedly connected with an output shaft of the rotating motor, and the other end of the driving rod is fixedly connected with the driving sleeve; the driving sleeve and the inner hexagonal wrench are circumferentially positioned through a hexagonal shaft and a hexagonal hole; the nut screwing mechanism comprises a hollow motor, an output shaft and a driving cylinder; the output shaft is of a cylindrical structure, one end of the output shaft is fixedly connected with the hollow motor rotor, and the other end of the output shaft is fixedly connected with the driving cylinder; the driving cylinder is of a stepped cylindrical structure, wraps the bolt tightening mechanism in the driving cylinder and is coaxial with the inner hexagonal wrench; the cylinder body part of the primary telescopic cylinder is fixedly connected with the mounting bottom plate; the cylinder body part of the secondary telescopic cylinder and the guide rail are respectively fixedly connected with two opposite side surfaces of the rotating motor; and a piston rod of the secondary telescopic cylinder and the sliding block are respectively and fixedly connected with two opposite side edges of the hollow motor.
2. The automatic mechanism for assembling an adjusting bolt to a valve rocker according to claim 1, wherein the rocker arm support seat is mainly characterized by comprising a bottom plane, a through hole, a 1/4 cylindrical surface and a support surface; the bottom plane is fixedly connected with the mounting platform through the through hole by a bolt; the 1/4 face of cylinder and the holding surface respectively with adjusting bolt mounting hole terminal surface and the face of cylinder of gyro wheel outside laminating, realize the incomplete location of rocking arm combination.
3. The automatic mechanism for assembling the adjusting bolt on the valve rocker according to claim 1, wherein the outer diameter of the movable cap of the adjusting bolt is slightly smaller than the inner diameter of the conveying pipeline, so that high-pressure air flow in the conveying pipeline can effectively act on the end face of the adjusting bolt while the adjusting bolt can smoothly move in the conveying pipeline; adjusting the bolt in the conveying pipeline along the movement direction of the high-pressure airflow, wherein the bolt rod is arranged in front of the movable cap, so that the bolt rod reaches a circular outlet formed by the flexible radial plate before the movable cap; the inner diameter of a round outlet formed by the flexible radial plate is slightly smaller than the outer diameter of a bolt rod of the adjusting bolt.
4. The automatic mechanism for assembling the adjusting bolt on the valve rocker according to claim 1, wherein the inner hexagonal wrench body is a hexagonal prism, a round chamfer is processed at the upper end of the hexagonal prism, an E-shaped tool withdrawal groove is processed near the upper end, a cylindrical boss with a diameter larger than the circumscribed circle of the hexagon is arranged near the lower end, and the cylindrical boss can slide up and down in the inner cylindrical surface of the driving sleeve; the inner diameter of the telescopic spring is larger than the radius of a hexagonal circumscribed circle of the inner hexagonal wrench, and the outer diameter of the telescopic spring is smaller than the radius of an outer circle of a cylindrical boss of the inner hexagonal wrench; the telescopic spring is arranged in a closed space defined by the driving rod, the inner wall of the driving sleeve, the hexagonal prism surface of the inner hexagonal wrench and the lower surface of the cylindrical boss of the inner hexagonal wrench.
5. The automatic mechanism for assembling the adjusting bolt on the valve rocker according to claim 1, wherein the upper port of the driving cylinder is provided with a hexagonal socket hole, and the circumferential and axial dimensions of the hexagonal socket hole are respectively slightly larger than and smaller than the corresponding dimensions of the nut.
6. A method of operating an automatic mechanism for assembling an adjusting bolt to a valve rocker according to any one of claims 1 to 5,
the method is characterized by comprising the following steps:
1) the high-pressure air flow sends the adjusting bolt to the port of the conveying pipeline, keeps a vertical downward posture and tightly presses the adjusting bolt at the inlet of the mounting hole of the adjusting bolt, wherein the movable cap is positioned in the conveying pipeline, and the bolt rod is clamped by a plurality of flexible radial plates;
2) the first-stage telescopic cylinder acts to extend the piston rod to drive the bolt tightening mechanism and the nut tightening mechanism to ascend, and the second-stage telescopic cylinder retracts completely to enable the end part of the inner hexagonal wrench processed with the round chamfer to be higher than the driving cylinder and to be attached to the inner hexagonal deep hole at the bottom of the bolt rod; the piston rod continues to extend, and the end part of the inner hexagonal wrench is inserted into the inner hexagonal deep hole; if the insertion is not smooth, the expansion spring is in a compressed state;
3) rotating the motor to screw the adjusting bolt into the adjusting bolt mounting hole; if the socket head wrench cannot smoothly go in and out in the previous step, the socket head wrench automatically slides into the internal hexagon deep hole under the pressure action of the telescopic spring in the rotating process and enters the screwing process of the thread;
4) the screwing motor continuously rotates until screwing is carried out, and then the motor reversely rotates for one circle; whether the adjusting bolt is screwed down or not can be judged according to the magnitude of the current in the process;
5) the primary telescopic cylinder retracts, the piston rod retracts, the bolt tightening mechanism and the nut tightening mechanism are driven to descend, and the inner hexagonal wrench is disconnected with the inner hexagonal deep hole;
6) the nut is conveyed to the position right above the inner hexagonal wrench by an external feeding mechanism and slides down to the position of the inner hexagonal shallow hole of the driving cylinder through the prismatic surface of the inner hexagonal wrench;
7) the first-stage telescopic cylinder acts again to extend the piston rod, and the end part of the inner hexagonal wrench is inserted into the inner hexagonal deep hole or tightly pressed on the edge of the inner hexagonal deep hole;
8) the second-stage telescopic cylinder extends out and drives the nut screwing mechanism to ascend together with the guide rail and the sliding block, and the driving cylinder drives the nut to ascend to the lower end face of the adjusting bolt along the inner hexagonal wrench;
9) the hollow motor rotates to drive the output shaft and the driving cylinder to rotate, and the nut is screwed into the adjusting bolt through the inner hexagonal shallow hole until the nut is tightly pressed with the rocker arm;
10) the second-stage telescopic cylinder retracts completely, and the first-stage telescopic cylinder retracts to complete one-time assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988482.4A CN108907686B (en) | 2018-08-28 | 2018-08-28 | Automatic mechanism for assembling adjusting bolt on valve rocker and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988482.4A CN108907686B (en) | 2018-08-28 | 2018-08-28 | Automatic mechanism for assembling adjusting bolt on valve rocker and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108907686A CN108907686A (en) | 2018-11-30 |
| CN108907686B true CN108907686B (en) | 2020-03-27 |
Family
ID=64407349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810988482.4A Active CN108907686B (en) | 2018-08-28 | 2018-08-28 | Automatic mechanism for assembling adjusting bolt on valve rocker and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108907686B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774853B (en) * | 2020-06-22 | 2021-11-30 | 东风汽车零部件(集团)有限公司襄阳粉末冶金分公司 | Automatic assembly device for rocker shaft and high-strength bolt of engine rocker arm |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000141144A (en) * | 1998-11-11 | 2000-05-23 | Kumagai Gumi Co Ltd | Method and device for assembling connecting member in steel pipe column |
| CN1754650A (en) * | 2004-09-29 | 2006-04-05 | 株式会社安川电机 | Fastener device |
| CN201140329Y (en) * | 2007-12-11 | 2008-10-29 | 谢名海 | Automatic screw nail locking machine |
| CN203599838U (en) * | 2013-12-10 | 2014-05-21 | 苏州宝迈通讯科技有限公司 | Fully-automatic combination assembling mechanism of screws and nuts |
| CN203636342U (en) * | 2013-11-14 | 2014-06-11 | 山东同力达智能机械有限公司 | Automatic bolt tightening machine for wheel brake disc |
| CN106271574A (en) * | 2016-08-31 | 2017-01-04 | 河北工程大学 | A kind of bolts assemblies mechanism and greatly sized bolt and nut automatic setup system |
| CN108015532A (en) * | 2018-01-17 | 2018-05-11 | 上海宇峰自动化设备有限公司 | Screw of the draw ratio less than 1.3 blows device for screwing up automatically |
-
2018
- 2018-08-28 CN CN201810988482.4A patent/CN108907686B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000141144A (en) * | 1998-11-11 | 2000-05-23 | Kumagai Gumi Co Ltd | Method and device for assembling connecting member in steel pipe column |
| CN1754650A (en) * | 2004-09-29 | 2006-04-05 | 株式会社安川电机 | Fastener device |
| CN201140329Y (en) * | 2007-12-11 | 2008-10-29 | 谢名海 | Automatic screw nail locking machine |
| CN203636342U (en) * | 2013-11-14 | 2014-06-11 | 山东同力达智能机械有限公司 | Automatic bolt tightening machine for wheel brake disc |
| CN203599838U (en) * | 2013-12-10 | 2014-05-21 | 苏州宝迈通讯科技有限公司 | Fully-automatic combination assembling mechanism of screws and nuts |
| CN106271574A (en) * | 2016-08-31 | 2017-01-04 | 河北工程大学 | A kind of bolts assemblies mechanism and greatly sized bolt and nut automatic setup system |
| CN108015532A (en) * | 2018-01-17 | 2018-05-11 | 上海宇峰自动化设备有限公司 | Screw of the draw ratio less than 1.3 blows device for screwing up automatically |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108907686A (en) | 2018-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210859103U (en) | Anti-drop bearing structure of air compressor | |
| CN111993025B (en) | Hose crimping machine for hydraulic system | |
| CN108907686B (en) | Automatic mechanism for assembling adjusting bolt on valve rocker and working method thereof | |
| CN110966157B (en) | Improved structure of air compressor | |
| CN109973352A (en) | The localization method and its locating structure of the bearing of mini air compressor | |
| CN209007128U (en) | Fixture | |
| CN206200497U (en) | Camshaft bowl plug assembly tooling | |
| CN85109439A (en) | Fluid machines | |
| CN203330206U (en) | Valve clamping groove rolling device | |
| CN114012388B (en) | Electromechanical valve clack installation device suitable for thing networking intelligence is made | |
| JP5654682B2 (en) | Fuel, preferably a pump unit for supplying diesel fuel to an internal combustion engine, and associated assembly method | |
| CN201632813U (en) | Built-in bearing puller | |
| CN205600336U (en) | Connecting rod concentric reducer chamfer anchor clamps | |
| CN103233779B (en) | Air intake and exhaust structure of rotary type engine | |
| CN215148617U (en) | Mounting fixture for sealing element of cylinder piston | |
| CN103394894B (en) | Engine sectional type exhaust tube assembling device and method | |
| CN209140290U (en) | Automotive air intake rocker arm and exhaust rocker arm are packed into the device of rocker arm shaft simultaneously | |
| CN201597000U (en) | Pneumatic wrench compressed air flow regulating valve | |
| CN202883925U (en) | Bending drive device for bending machine | |
| CN205290811U (en) | Diesel engine disk seat pressure equipment frock | |
| CN2467819Y (en) | Piston compressor | |
| CN103072002B (en) | A kind of device for installing jump ring | |
| CN203210325U (en) | Disassembling and assembling device for valve spring | |
| CN216894699U (en) | Pump cover of high-pressure oil supply pump | |
| CN218746000U (en) | Steel wire retainer ring press-fitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210709 Address after: No. 550, Yingsheng Road, Taishan District, Tai'an City, Shandong Province Patentee after: Taian Taishan Huijin Intelligent Technology Co.,Ltd. Address before: 250353 University Road, Changqing District, Ji'nan, Shandong Province, No. 3501 Patentee before: Qilu University of Technology |
|
| TR01 | Transfer of patent right |