JP2000317744A - Device for assembling ring-like component to bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow assembling with high precision by abutting a guide rod inserted into a ring-like component on a bolt waiting on a feeding member, and advancing a push tube to forcefully couple the ring-like component with the bolt. SOLUTION: A feeding member 7 is of a reciprocating type capable of being moved to an assembling position and a discharging position, and it is provided with an air cylinder 11 and a piston rod 12. The relative position between the feeding member 7 and a feeding chute 21 is set so that a bolt 1 and a seal ring 5 are made coaxial when the feeding member 7 is located at the assembling position. A press-in rod 26 is advanced by the action of an air cylinder 31, its guide rod 27 abuts on a shaft section 2 through the seal ring 5, then a push tube 28 is relatively advanced to thrust the seal ring 5. The seal ring 5 is finally thrust to be closely stuck to the flange 3 of the bolt 1, and assembling is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION A drain plug is screwed into a drain hole of a fuel tank of an automobile or an oil pan of an engine. The plug is provided with a seal ring. The present invention belongs to the field of assembling a ring-shaped part to the bolt of such a plug.

[0002]

2. Description of the Related Art Various types of devices for assembling a ring-shaped component on a shaft-shaped component have been put to practical use. In general, the movement trajectory of the ring-shaped component is set in advance by a guide rod, and the ring-shaped component is pushed into a bolt or the like of the other party by a pipe-shaped push tube. Although such a method is surely performed in the assembling itself, the arrangement of the assembling part and the part for discharging the assembled parts is not implemented in a favorable manner. further,
The relative position between the shaft-shaped part and the ring-shaped part is set before assembling, but this setting often causes the part to move in a complicated manner, and thus hinders the assembling accuracy.

[0003]

[Means for Solving the Problems and Their Functions] The present invention has been provided to solve the problems described above.
According to the first aspect of the present invention, an advancing / retracting supply member that holds a bolt and can take at least an assembling position and a discharge position and a supply shooter that holds a ring-shaped component are installed facing each other, and the supply member is located at the assembling position. At some point, the relative position between the supply member and the supply chute is set so that the bolt and the ring-shaped part are coaxial, and a guide rod that penetrates the ring-shaped part and is abutted against the end of the bolt and the outside of this rod It is characterized in that a press-fit rod that can move forward and backward is constituted by a push tube that pushes out the ring-shaped part, and a discharge rod that pushes out a bolt from which the assembly of the ring-shaped part is completed from a discharge position of the supply member is provided. A guide rod penetrating the ring-shaped part is abutted against the bolt waiting at the supply member, and then the push tube advances to forcibly fit the ring-shaped part to the bolt. When this assembly is completed, the supply member moves and stops at the discharge position, where it is ejected by the discharge rod and the bolt is released from the supply member.

According to a second aspect of the present invention, in the first aspect, the supply member has an accommodation recess provided with an opening for bolt entry, and the magnet is attached to the supply member so that the bolt is drawn into the accommodation recess. It is characterized in that it is embedded, the bolt entering the accommodation recess from the open portion is smoothly introduced into the recess with the aid of the attractive force of the magnet, and in the ejection position, the bolt caught by the ejection rod is It surely goes out of the opening.

According to a third aspect of the present invention, in the second aspect, the pushing direction of the discharge rod is set to the direction in which the bolt is discharged from the opening, and the bolt pushed by the discharge rod is smoothly opened. Discharged from the department.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. The bolt here is the aforementioned drain plug, and is an embodiment in which a rubber ring for sealing is attached to the drain plug. The bolt 1 is made of iron, and includes a shaft portion 2, a flange 3, and a hexagonal head 4. The ring-shaped component is a seal ring 5 made of rubber, and when assembling to a bolt, the shaft portion 2 is fitted into the through hole 6 so as to be in close contact with the flange 3. Seal ring 5
When assembling, since the through hole 6 is fitted while being pushed and expanded by the thread of the shaft portion 2, the seal ring 5
Must be pushed firmly.

The supply member 7 has a recess 8 for receiving the flange 3 and the head 4, and an opening 9 for allowing the bolt 1 to enter and exit. A magnet 10 is embedded at a location opposite to the opening 9, and the bolt 1 is drawn into the accommodation recess 8 by the attraction force of the magnet 10. The supply member 7 is a retractable type so as to be able to take an assembling position shown by a solid line and a discharge position shown by a two-dot chain line in FIGS.
For this purpose, an air cylinder 11 is provided, the piston rod 12 of which is connected to the supply member 7. Stationary member 13
The substrate 14 is firmly fixed to the
Is fixed to the air cylinder 11. The supply member 7 reciprocates between the assembly position and the discharge position while sliding on the substrate 14.

When the supply member 7 is in the assembling position, the opening 9 of the supply member 7 is opposed to the outlet 17 of the supply chute 16 in a state of approaching, and the other end of the supply chute 16 is connected to the parts feeder 18. . The supply chute 16 is disposed at an angle, and its cross-sectional shape is shown in FIG. FIG. 2 shows that the bolt flange 3 in the accommodation recess 8 has two flanges 3.
The bolt striking the second bolt and aligned with the supply chute 16 is immobile.
In order to prevent the bolt 1 from accidentally dropping when the supply member 7 advances, a regulating plate 19 is attached to the supply member 7 so that when the supply member 7 moves to the discharge position, The earliest bolt of the shooter 16 is prevented from rolling.

The seal ring 5 is a separate parts feeder 2
The first through hole 6 of the seal ring 5 which has been sent from the feed chute 21 and has passed through the supply chute 21 is coaxial with the shaft portion 2. The supply chute 21 has a rectangular cross section, and the inside thereof forms a passage for the seal ring 5. Supply shooter 21
The control rods 22 and 23 which enter into the inside are advanced and retracted by air cylinders 24 and 25, respectively.
Serves as a stopper for the second seal ring 5,
The regulating rod 23 serves as a stopper for the third seal ring 5. The restriction rod 23 has entered the through hole 6 of the seal ring. Both rods 22 and 23 are operated alternately so that the second one does not interfere with the first seal ring. The supply chute 21 and the supply member 7 are installed so as to face each other as shown in the figure, and when the supply member 7 is at the assembly position, the bolt 1 and the seal ring 5 are provided.
So that the supply member 7 and the supply shooter 21 are coaxial with each other.
Relative position is set. The supply chute 21 is fixed to a stationary member, and is fixed to the tip of the bent piece 15 here.

The press-fit rod 26 has a guide rod 27 inserted into a cylindrical push tube 28, and the elasticity of a return spring 29 applies a force to the guide rod 27 in a projecting direction. The maximum projection length of the guide rod 27 is regulated by the stopper flange integrated with the guide rod 27. In order to move the press-fit rod 26 forward and backward, an air cylinder 31 is fixed, and its piston rod 32 is connected to the press-fit rod 26. As shown in the figure, the positions of the shaft portion 2, the through hole 6, and the guide rod 27 are set so that the three members are coaxial.

The discharge rod 33 has a function of pulling the bolt 1 coming to the discharge position away from the supply member 7 and discharging the bolt.
Here, it is constituted by a piston rod of the air cylinder 34. A concave groove 35 is formed on the surface of the supply member 7 so that the discharge rod 33 accurately presses the bolt 1 in the accommodation recess 8. Since the attractive force of the magnet 10 is acting on the bolt 1 in the accommodation recess 8, it is effective to press the flange 3 of the bolt, and a concave groove 35 is provided for that purpose.

In the vicinity of the tip of the supply chute 21,
A through hole 37 for allowing the press-fit rod 26 to pass therethrough is provided. Similarly, a through hole 38 for allowing the movement of the seal ring 5 is provided. Further, the projecting portion 36 of the substrate 14
Is fixed to the air cylinder 34. And code 3
9 is a receiving box for the protruded bolts 1. Further, various air cylinders are employed, but illustration of hoses to be connected thereto is omitted. The air switching valve, the sequence circuit, and the like for realizing the operation described later may be those generally used, and therefore, no special description is given here.

The operation of the above embodiment will be described. When the press-fitting rod 26 advances by the operation of the air cylinder 31 from the state of FIG. 1, the guide rod 27 penetrates the through hole 6 of the seal ring and abuts on the tip of the shaft portion 2 to be in the state of FIG. When the press-fit rod 26 further advances, the push pipe 28 relatively advances while compressing the return spring 29, and pushes the seal ring 5 in.
The state is as shown in FIG. And finally, the push tube 28
As a result, the seal ring 5 is pressed until it comes into close contact with the flange 3, and the assembly is completed.

Subsequently, the air cylinder 31 is retracted, and the press-fit rod 26 returns to the position shown in FIG. Then, the supply member 7 is moved to the discharge position shown by the two-dot chain line by the operation of the air cylinder 11, where the discharge rod 33 protrudes and discharges the bolt 1 from the accommodation recess 8. During this operation, the regulating plate 19 prevents the next bolt from moving. At the same time, the restricting rod 22 is moved backward to move the regulated seal ring 5 to the foremost position of the hole 38. Then, when the regulating rod 22 reenters, the regulating rod 23 retreats, and the third one moves second.

[0015]

According to the present invention, the supply member is stopped at the assembly position, the assembly is completed under the above-described coaxial arrangement, and then the supply member is moved to the discharge position.
Here, the bolt is discharged by the discharge rod. Therefore, assembling is performed in a highly accurate environment, and discharging is performed at a location away from the assembling.Therefore, discharging does not adversely affect the assembling, and the installation of discharge means does not affect the mounting position. It is possible to perform discharge with an optimal structure without receiving. Since the relative positions of the supply member and the supply shooter are opposed to each other, it is very convenient and advantageous to ensure coaxiality between the bolt and the ring-shaped component. Further, the bolt supply to the supply member can be performed by a simple bolt transfer path, and the supply shooter for the ring-shaped component has a simple structure. Therefore, since the moving path of the component is simplified, no problem such as snagging occurs during the movement of the component.

A release portion is provided in the storage recess of the supply member, and a magnet is disposed at a position opposite to the release portion, so that the bolt passes through the release portion and is smoothly attracted to the magnet inside the storage recess. And the stop position of the bolt is always uniformed, so that the operation is smooth and reliable.

The direction in which the ejection rod is pushed out is the same as the direction in which the bolt is ejected, so that the bolt is easily separated from the magnet and ejected reliably.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line (2)-(2) of FIG.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 2;

FIG. 4 is a side view of a supply member.

FIG. 5 is a three-dimensional view of a supply member.

FIG. 6 is a simplified side view showing a transient state of assembly.

FIG. 7 is a simplified side view showing a transient state of assembly.

[Explanation of symbols]

 Reference Signs List 1 bolt 7 supply member 5 ring-shaped component 21 supply shooter 27 guide rod 28 push tube 26 press-fit rod 33 discharge rod 9 opening 8 accommodation recess 10 magnet

Claims (3)

[Claims] An advancing / retracting supply member that holds a bolt and can take at least an assembling position and a discharging position and a supply shooter that holds a ring-shaped component are installed facing each other, and when the supply member is at the assembling position. A relative position between the supply member and the supply chute is set so that the bolt and the ring-shaped part are coaxial, and a guide rod that penetrates the ring-shaped part and abuts against the end of the bolt, and a ring-shaped part outside the rod. A ring-shaped part, comprising a push-in rod capable of moving forward and backward by a push pipe for pushing out the part, and a discharge rod for pushing out a bolt from which the assembly of the ring-shaped part is completed from a discharge position of the supply member is provided. A device to assemble to bolts. 2. The supply member according to claim 1, wherein the supply member has an accommodation recess provided with an opening for bolt entry, and the magnet is embedded in the supply member so that the bolt is drawn into the accommodation recess. A device for assembling a ring-shaped part that is a feature of a bolt. 3. The apparatus for assembling a ring-shaped part according to claim 2, wherein the direction in which the discharge rod is pushed out is the direction in which the bolt is discharged from the opening.