JP2000052161A - Method and device for pressing-in component around valve of cylinder head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To press a valve guide and a valve sheet into the cylinder head of multi-cylinder within a short time. SOLUTION: A cylinder head S is placed in a pallet 5 at a set station 2, the cylinder head S is placed together with the pallet 5 on a tilting mechanism 14, carried to a processing station 3 by a moving mechanism 12, then the cylinder head S is inclined by a specified angle by the tilting mechanism 14, the cylinder head S is moved forward/backward by the moving mechanism 12 of the set station 2, a plurality of valve guides are pressed in by a valve guide pressing-in mechanism 60, and a plurality of valve sheets are pressed in by a valve sheet pressing-in mechanism 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for press-fitting parts around a valve of a cylinder head.

[0002]

2. Description of the Related Art For example, Japanese Patent Application No. Hei 7-13686 discloses a method and apparatus for press-fitting parts around a valve of a cylinder head.
Japanese Patent Application Laid-Open No. 5 (1999) discloses a method for press-fitting parts around a valve into a cylinder head. According to the above-mentioned technology, according to FIG.
A jig plate 7 is mounted on the jig plate 7. A cylinder head H is placed on the jig plate 7, and the cylinder head H is clamped by a clamp device 26.
Is lowered to press-fit the valve guide on the intake valve side, and the seat ring press-fitting device Pc is raised to press-fit the seat ring R on the intake valve side. Then, the jig table 5 is rotated around the swing axis 3.
Is rotated to lower the valve guide press-fitting device Pb to press-fit the valve guide G on the exhaust valve side, and raise the seat ring press-fitting device Pd to press-fit the seat ring R on the exhaust valve side.

[0003]

However, the above technique is
If the cylinder head H has one cylinder, the valve guide G and the seat ring R can be press-fitted. However, the valve guide G and the seat ring R cannot be press-fitted into the cylinder head of four or six cylinders. For example, when press-fitting the valve guide G and the seat ring R into a four-cylinder or six-cylinder cylinder head, it is necessary to move the valve guide press-fitting devices Pa and Pb and the seat ring press-fitting devices Pc and Pd for each cylinder. . In order to move the valve guide press-fitting devices Pa and Pb and the seat ring press-fitting devices Pc and Pd, a highly rigid moving device is required, and the entire device becomes large. In addition, a valve guide press-fitting device Pa for one cylinder,
The Pb and seat ring press-fitting devices Pc and Pd are moved for each cylinder, and the valve guide G and the seat ring R are press-fitted for each cylinder.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and a device for press-fitting parts around a valve of a cylinder head which can reduce the working time without increasing the size of the device.

[0005]

According to a first aspect of the present invention, a multi-cylinder cylinder head is interposed between a press-fitting mechanism for a valve guide and a press-fitting mechanism for a valve seat. The valve guide and valve seat on the intake or exhaust side are sequentially pressed in while the cylinder head is advanced, and then the cylinder head is rotated by a predetermined angle by a tilt mechanism, and the valve guide on the intake or exhaust side is retracted while the cylinder head is retracted. And a method for press-fitting a valve head part of a cylinder head by sequentially press-fitting a valve seat.

A multi-cylinder cylinder head is interposed between the valve guide press-fitting mechanism and the valve seat press-fitting mechanism. Then, for example, the valve guide and the valve seat on the intake side are sequentially pressed in while the cylinder head is advanced. Next, the cylinder head is rotated by a predetermined angle by the tilt mechanism, and the valve guide and the valve seat on the exhaust side are sequentially press-fitted while the cylinder head is retracted.

A second aspect of the present invention is a press-fitting device for a valve head part of a cylinder head, comprising a set station for setting a cylinder head on a pallet, and a processing station for pressing the valve head part into the cylinder head set at the set station. The set station includes a tilt mechanism for swingably supporting the pallet, a bed for supporting the tilt mechanism, and a moving mechanism for linearly moving the tilt mechanism along the bed. While holding the valve guide,
A valve guide press-fitting mechanism for selectively press-fitting one of them into the cylinder head, and a valve seat press-fitting mechanism for holding a plurality of valve seats and selectively pressing one of them into the cylinder head. It is characterized by the following.

At the set station, the cylinder head is mounted on the pallet, the cylinder head is mounted together with the pallet on the tilt mechanism, and transported to the processing station by the moving mechanism. The cylinder head is tilted to a predetermined angle by the tilt mechanism, the cylinder head is moved forward or backward by the moving mechanism of the set station, a plurality of valve guides are press-fitted by the valve guide press-fitting mechanism, and a plurality of valve seats are pressed by the valve seat press-fitting mechanism. Press in.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a press-fitting device for a part around a valve of a cylinder head according to the present invention. A press-fitting device 1 (hereinafter, abbreviated as “press-fitting device 1”) for press-fitting a valve peripheral part of a cylinder head includes a set station 2,
The machining station 3 is arranged orthogonal to the set station 2. The set station 2 has a four-cylinder cylinder head S (hereinafter, referred to as a cylinder head) as a cylinder head.
This is a station that transports the “cylinder head S” to the processing station 3, and the processing station 2
Is a station for press-fitting a valve guide and a valve seat to be described later into the cylinder head S. Reference numeral 5 denotes a pallet on which the cylinder head S is placed.

FIG. 2 is a perspective view of a pallet used in the press-fitting device according to the present invention. The pallet 5 is a pallet body 6
Receiving portions 6a and 6b of the cylinder head S attached to the pallet body 6, work positioning pins 6c and 6d attached to the pallet body 6, left and right guides 6e and 6f provided on the pallet body 6, and a pallet. A side guide 6g provided in the main body 6, positioning holes 6h and 6i for positioning the tilt mechanism 14 to be described later, an opening 6j for press-fitting valve seats B1 and B2 to be described later into the cylinder head S, and a pallet main body. 6 and a work positioning pin 6c, while aligning the cylinder head S with left and right guides 6e and 6f and a side guide 6g.
6d.

FIG. 3 is a sectional view taken along the line 3-3 in FIG. 2, and shows a sectional view of the cylinder head S indicated by a solid line. That is, S
1 is an intake-side port, S2 is an exhaust-side port, G1 is an intake-side valve guide press-fit at the processing station 3 (see FIG. 1), G2 is an exhaust-side valve guide press-fit at the processing station 3, and B1 is a processing station 3 ( B2 is an exhaust-side valve seat press-fit at the processing station 3, A1 is an axis of the valve guide G1 and the valve seat B1 press-fit into the intake-side port, and A2 is an exhaust-side port. Guide G2 for press fitting
And the axis of the valve seat B2.

FIG. 4 is a side view of the set station of the press-fitting device, as viewed in the direction of arrow 4 in FIG. The set station 2 includes a bed 11, a moving mechanism 12 attached to the bed 11, a set conveyor 13 extending laterally from the bed 11, and a tilt mechanism 14 that moves linearly along the bed 11 by the moving mechanism 12. Consists of Moving mechanism 12
Are the rails 16 and 16 provided on the upper surface of the bed 11 (1
6 is not shown), a motor 17 as a driving source attached to the bed 11, and a ball screw 19 connected to a motor shaft 17a of the motor 17 via couplings 18a and 18b.
And bearing portions 21a and 21b for supporting the ball screw.
And a feed nut portion 22 fitted to the ball screw 19;
The control unit 23 controls the position of the tilt mechanism 14 on the bed 11 based on the rotation speed of the motor 17. The motor 17 is a rotary encoder 1 for controlling the number of rotations.
7b.

FIG. 5 is a front view of the set station 2 as viewed in the direction of the arrow 5 in FIG. The set conveyor 13 is provided with support stays 25, 25 (25
Are not shown), horizontal rails 26, 26 (the inner 26 is not shown) respectively attached to these support stays 25, and ball units 27 arranged on these horizontal rails 26, 26 at equal intervals. … Indicate a plurality, the same applies hereinafter), a pallet 5 is placed on the ball units 27, and the cylinder head S is set on the pallet 5 and pushed into or out of the tilt mechanism 14. Department.

FIG. 6 is a plan view of the tilt mechanism 14 as viewed in the direction of the arrow 6 in FIG. The tilt mechanism 14 includes a feed base 31 integrally attached to the feed nut portion 22 of the moving mechanism 12 shown in FIG. 4, left and right support stays 32 and 33 mounted on the feed base 31, and left and right support stays 32 and 33. Right support stay 32, 33
The tilt base 34 is attached to the right support stay 33 via a speed reducer 35 for rotating the tilt base 34, and a clamp unit 38 provided on the tilt base 34. . Reference numeral 34a denotes a fitting part of the tilt base 34 fitted to the left support stay 32, and reference numeral 34b denotes a fitting part of the tilt base 34 fitted to the right support stay 33.

FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG. The clamp unit 38 includes the above-described tilt table 34 and the tilt table 3.
4, a pallet receiving surface 39, positioning pins 42, 42 for positioning the pallet 5 (see FIG. 2) provided on the tilt table 34, and a slider 4 mounted on the tilt table 34.
3 and 43 (only one is shown), and these sliders 43 and 43
Guide shafts 44, 44 slidably mounted on 43
(Only one is shown), cylinder units 45 and 45 (only one is shown) attached to the tilt table 34, the tips of the guide shafts 44 and (44), and the piston rods 45a and 45a of the cylinder units 45 and (45). A holding plate 46 attached to the tip of one (only one is shown), guide shafts 44, (44) and piston rods 45,
(45), and left and right brackets 48, 49 mounted on these stoppers 47 so as to be movable upward.

FIG. 8 is a sectional view taken along the line 8-8 in FIG. 6, showing a sectional view of the tilt mechanism 14 in a direction perpendicular to the longitudinal direction. The holding plate 46 has an attachment plate 51 attached to the lower side. By preparing a plurality of the attachment plates 51, it is possible to cope with many works having different shapes. The left bracket 48 is for the guide shaft 4
4 and a slider portion 52 for sliding the piston rod 45a.
3, a pallet temporary receiving surface 54 for temporarily receiving a pallet is formed at the tip of the lifter portion 53. The right bracket 49 is symmetrical to the left bracket 48 (see FIG. 7), that is, 55 is a slider portion,
Is a lifter section, and 57 is a pallet temporary receiving surface.

Here, the procedure of clamping the cylinder head S will be described. First, the pallet 5 on the set conveyor 13
Set the cylinder head to. The pallet 5 on which the cylinder head S is set is transferred to the pallet temporary receiving surfaces 54, 57 of the left and right brackets 48, 49. Cylinder unit 4
5, the piston rod 45a is lowered, and the lower surface of the pallet 5 is placed on the pallet receiving surface 39 of the tilt table 34. Further, the piston rod 45a is lowered, and the upper surface of the cylinder head S is pressed by the holding plate 46. That is, the cylinder head S and the pallet 5 are clamped by being sandwiched between the pallet receiving surface 39 and the holding plate 46.

FIG. 9 is a view taken in the direction of arrow 9 in FIG. The processing station 3 holds a plurality of valve guides G1, G2 (see FIG. 3), and a first press-fitting mechanism 60 as a valve guide press-fitting mechanism for selectively press-fitting one of them into the cylinder head S. ,
While holding a plurality of valve seats B1 and B2 (see FIG. 3), one of them is selectively
And a second press-fitting mechanism 70 as a press-fitting mechanism for a valve seat to be press-fitted into the valve seat. The first press-fitting mechanism 60 includes the bed 6
1, a multi-axis rotary head 62 slidably mounted on the bed 61, and a press-fit unit 63 for press-fitting the valve guides G1 and G2 into the cylinder head S shown in FIG. 3 with the multi-axis rotary head 62. Bed 61
Are provided with rails 61a, 61a (the inner 61a is not shown) for slidably mounting the multi-axis rotary head 62.

The multi-axis rotary head 62 includes a rail 61
a, a head base 62a slidably mounted on (61a), a rotary head 62b rotatably mounted on the head base 62a, and a rotary head 62b
, A motor 62d for rotating the rotary head 62b, and a motor 6d.
A gear group (not shown) for transmitting the rotation of 2d to the rotary head 62b.

That is, the multi-axis rotary head 62 has a plurality of valve guides G1, G2
(See FIG. 3), one of which can selectively face the cylinder head S (see FIG. 3). The press-fit mechanism 63 includes a stay 64 fixed to the bed 61 and a press-fit motor 6 attached to the stay 64.
5 and a ball screw 66 connected to the motor 65 via a timing belt (not shown). X1 indicates the moving direction of the multi-axis rotary head 62.

The second press-fitting mechanism 70 includes the first press-fitting mechanism 6.
0, that is, 71 is a bed, 71
a is a rail attached to a bed, 72 is a multi-axis rotary head, 72a is a head base, 72b is a rotary head,
72c is a press-fit shaft, 72d is a motor, 73 is a press-fit unit, 74 is a stay, 75 is a press-fit motor, 76 is a ball screw, and X2 is the moving direction of the multi-axis rotary head 72. The multi-axis rotary head 70 includes a press-fit shaft 72c.
Hold a plurality of valve seats B1 and B2 (see FIG. 3), and selectively hold one of the valve seats B1 and B2 (see FIG. 3).
(See Reference).

The operation of the press-fitting device 1 described above will now be described. FIGS. 10A to 10C are explanatory diagrams of a first operation of the press-fitting device according to the present invention. In (a), the pallet 5 is placed on the set conveyor 13, and the cylinder head S is set on the pallet 5. In (b), the pallet 5 on which the cylinder head S is set is pushed into the tilt mechanism 14 as shown by an arrow. Then, the cylinder head S is clamped together with the pallet 5 by the clamp unit 38.
In (c), the motor 17 of the moving mechanism 12 is started,
By rotating the ball screw 19, the feed base 31 is moved to the processing station 3 as shown by the arrow.

FIGS. 11A to 11C are views for explaining a second operation of the press-fitting device according to the present invention. 3A, the axis A1 on the intake side shown in FIG.
The cylinder head S and the pallet 5 shown in FIG. 3 are tilted by operating the tilting mechanism 14 in parallel to the moving directions X1 and X2 of FIG. Details are shown in FIG.
In (b), the valve guide G1 and the valve seat B1 are pressed into the intake port S1 shown in FIG. The intermittent feed is performed in the direction of the arrow, that is, while the feed base 31 of the tilt mechanism 14 is advanced, and the necessary number of valve guides G1 and valve seats B1 are supplied to the intake side ports S1 for four cylinders by the multi-axis rotary heads 62 and 72. Press in sequentially.

In FIG. 3C, the axis A2 on the exhaust side shown in FIG.
In parallel to X2, the tilt mechanism 14 is operated to tilt the cylinder head S and the pallet 5 shown in FIG. Details are shown in FIG. Next, the valve guide G2 and the valve seat B are connected to the exhaust port S2 shown in FIG.
2. Press-fit. In the direction of the arrow, that is, intermittently feeding while the feed base 31 of the tilt mechanism 14 is retracted, the necessary number of valve guides G2 and valve seats B2 are sequentially supplied to the exhaust-side ports S1 for four cylinders by the multi-axis rotary heads 62 and 72. Press in.

FIGS. 12 (a) and 12 (b) are views for explaining a third operation of the press-fitting device according to the present invention. (A) shows a state where the pallet 5 and the cylinder head S are tilted when the valve guide G1 and the valve seat B1 are pressed into the intake port S1. That is, the axis A of the intake port S1
1 is the moving direction X1, X of the multi-axis rotary heads 62, 72.
2 indicates that it is parallel. (B) shows the exhaust port S
2 shows a state in which the pallet 5 and the cylinder head S are tilted when the valve guide G2 and the valve seat B2 are press-fitted into 2. That is, the axis A2 of the exhaust port S2
Are the moving directions X1, X2 of the multi-axis rotary heads 62, 72.
Indicates that it is parallel to

FIGS. 13A to 13C are views for explaining a fourth operation of the press-fitting device according to the present invention. In (a), the tilt mechanism 14 is operated to move the upper surface of the cylinder head S to the bed 1.
The inclination of the cylinder head S and the pallet 5 is returned to the original so as to be parallel to 1. In (b), the motor 17 is started, the ball screw 19 is rotated, the feed base 31 of the tilt mechanism 14 is returned to the initial position as shown by the arrow, and the cylinder head S and the pallet 5 are unclamped. In (c), the cylinder head S with the pallet 5 is pulled out on the set conveyor 13 as shown by the arrow.

In this embodiment, the intake valve guide G1 and the valve seat B1 shown in FIG.
(See FIG. 7) is advanced and press-fitted, and the exhaust-side valve guide G2 and valve seat B2 are press-fitted by retracting the tilt mechanism 14 (see FIG. 7), but the tilt mechanism 14 (see FIG. 7) is advanced. The valve guide G2 on the exhaust side and the valve seat B2 are press-fitted, and the tilt mechanism 14 (see FIG. 7) is retracted so that the valve guide G1 on the intake side and the valve seat B
1 may be press-fitted. In the present embodiment, as shown in FIGS. 2 and 3, a four-cylinder cylinder head S is illustrated, but the number of cylinders in the cylinder may be arbitrary. Further, the cylinder head may be a cylinder head in which two valves are arranged in the intake port S1 and two valves are arranged in the exhaust port S2 shown in FIG.

[0028]

According to the present invention, the following effects are exhibited by the above configuration. The first aspect of the present invention has a multi-cylinder cylinder head interposed between the valve guide press-fitting mechanism and the valve seat press-fitting mechanism, and sequentially moves the intake-side or exhaust-side valve guide and valve seat while moving the cylinder head forward. The cylinder head is rotated by a predetermined angle by the tilt mechanism, and the remaining valve guides and valve seats on the intake or exhaust side are sequentially press-fitted while retracting the cylinder head. The valve guide and the valve seat can be press-fitted in a short time.

According to a second aspect of the present invention, the cylinder head is mounted on the pallet at the set station, the cylinder head is mounted together with the pallet on the tilt mechanism, transported to the processing station by the moving mechanism, and tilted to a predetermined angle by the tilt mechanism. Since the cylinder head is advanced or retracted by the moving mechanism of the set station, the plurality of valve guides are press-fitted by the press-fitting mechanism of the valve guide, and the valve seat is press-fitted by the press-fitting mechanism of the valve seat. The valve guide and the valve seat can be press-fitted in a short time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a press-fitting device for a part around a valve of a cylinder head according to the present invention.

FIG. 2 is a perspective view of a pallet used in the press-fitting device according to the present invention.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a view taken in the direction of arrow 4 in FIG. 1;

FIG. 5 is a view taken in the direction of arrow 5 in FIG. 1;

FIG. 6 is a view taken in the direction of arrow 6 in FIG. 1;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

8 is a sectional view taken along line 8-8 in FIG. 6;

FIG. 9 is a view taken in the direction of arrow 9 in FIG. 1;

FIG. 10 is a diagram illustrating a first operation of the press-fitting device according to the present invention.

FIG. 11 is an explanatory view of a second operation of the press-fitting device according to the present invention.

FIG. 12 is an explanatory view of a third operation of the press-fitting device according to the present invention.

FIG. 13 is an explanatory view of a fourth operation of the press-fitting device according to the present invention.

[Explanation of symbols]

1 ... Press-fitting device for parts around cylinder head valve 2 ...
Set station, 3 processing station, 5 pallet, 11 bed, 12 moving mechanism, 14 tilt mechanism, 60, 70 press-in mechanism (first and second press-in mechanisms),
S: cylinder head.

Continuing from the front page (72) Inventor Seiichi Ohno 1-10-1, Shinsayama, Sayama City, Saitama Prefecture Inside Honda Engineering Co., Ltd. (72) Inventor Fumio Ueno 1-10-1, Shinsayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd. F-term (reference) 3C030 BC19 CC08

Claims (2)

[Claims] 1. A multi-cylinder cylinder head is interposed between a valve guide press-fitting mechanism and a valve seat press-fitting mechanism which are arranged opposite to each other. A cylinder head valve characterized by sequentially press-fitting a seat, then rotating a cylinder head by a predetermined angle by a tilt mechanism, and sequentially press-fitting an intake-side or exhaust-side valve guide and a valve seat while retracting the cylinder head. Press-fitting method of surrounding parts. 2. A press-fitting device for a valve-around part of a cylinder head, comprising: a set station for setting a cylinder head on a pallet; and a processing station for press-fitting the valve-around part into the cylinder head set at the set station. The set station includes a tilt mechanism that swingably supports the pallet, a bed that supports the tilt mechanism, and a moving mechanism that linearly moves the tilt mechanism along the bed. A valve guide press-fitting mechanism that holds a valve guide and selectively presses one of them into the cylinder head, and a valve that holds a plurality of valve seats and selectively presses one of them into the cylinder head. A syringe comprising a seat press-in mechanism. Head of the valve around parts of the press device.