JP3312866B2 - Work tilting device and engine valve assembling device using the work tilting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work inclining device for inclining a work at a predetermined inclination angle, and an engine valve assembling apparatus using the work inclining device.

[0002]

2. Description of the Related Art For example, in an engine of an automobile or the like,
The intake valve and the exhaust valve are mounted in a V-shape with respect to a cylinder head (hereinafter, appropriately referred to as “work”). As shown in FIG. 8, a retainer 100 and a cotter 102 are mounted on the upper ends of these valves.
It is necessary to secure the space for mounting the retainer 100 and the cotter 102 by pushing down the spring 04 against its spring force.

At this time, if the axis of the valve 101 is not set to be vertical, the retainer 100 and the cotter 102 housed in the mounting space may be inclined by their own weight, and assembling may be uncertain. Therefore, it is necessary to tilt the work obliquely. That is, with the work being tilted and the intake valve being vertical, the retainer 10
It is preferable that the work of mounting the cotter 102 and the cotter 102 is performed, and then the work is tilted to the opposite side so that the exhaust valve is in a vertical state and the retainer and the cotter are mounted.

[0004] Therefore, the following standard operation performed by an automatic facility for tilting a work has been known. First, the work on the conveyor is lifted (lifted) by the lifter and separated from the conveyor. Next, the work is tilted at the rising end of the lifter (the work is inclined so that the valve is vertical). Then, after the work is tilted, the work is raised and lowered again to depress the valve spring, and the work of assembling the retainer and the cotter is performed.

[0005]

However, according to the above-mentioned prior art, various independent operations such as raising, tilting, re-raising, and lowering the work are required prior to assembling the retainer and the cotter. However, there has been a problem that a device configuration for performing the above operation is complicated and a cycle time is long.

In the above-mentioned prior art, a case where a retainer and a cotter are attached to a valve of a cylinder head has been described as an example. However, the above-mentioned problem is caused in all cases where a work is inclined and assembly and processing are performed. This is a general problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a work inclining device which simplifies the structure of the device and shortens the cycle time. Another object of the present invention is to provide an engine valve assembling apparatus using the above-described work tilting apparatus, which has a simple structure and can improve workability.

[0008]

Means for Solving the Problems Claims for achieving the above object
In the invention of the work tilting device according to item 1, the work is inclined at a predetermined angle.
In the work tilting device that tilts the work at a time,
A predetermined tilting motion is performed by applying a predetermined force
A lifter having a motion imparting portion;
Lifting means for raising and lowering in an existing state;
The sliding part that has been formed slides and moves to raise and lower the posture of the lifter.
And a guide member for regulating, wherein the guide portion is
The lifter slides in order as the
Section slides and the lifter maintains a nearly upright posture
A first guide portion for regulating the guide so that
The sliding part slides so that the inclination angle of the
The front and rear sides have inclined surfaces before and after moving
And a second guide portion at the rear and the lifter have a predetermined inclination angle.
The sliding part slides so that it rises while maintaining the
Before regulating the guide with vertical faces facing before and after moving
The third and rear third guide portions are formed continuously, and the second
The front or rear of the sliding portion sliding on the guide portion
The slope of the lifter is selected and determined, and the slope of the lifter is determined.
That a tilt direction switching mechanism for switching the direction was provided.
Features.

According to this configuration, the lifting means moves up
The lifting posture of the lifter to be lifted is as follows.
Ascended by the guide section and rises upright, then
It is regulated by the guide section and gradually tilts. Followed by
Ascended by the guide part 3 while maintaining the inclined posture
I do. In this way, the lifter is raised by the lifting means
Just lifter in upright position, tilt, tilt position
Can be performed easily, reliably and smoothly.
Wear. In addition, by switching the switching mechanism,
By guiding the lifter to one inclined surface side of the second guide portion,
It can be tilted to the other side and guided to the other
And can tilt the lifter to one side. For example,
V-shaped intake bar on the cylinder head of the engine
Attach retainer and cotter to lube and exhaust valve
It is convenient when doing. In addition, there is no
Work, raising, tilting, re-raising, lowering, etc.
Operation can be performed smoothly and short cycle time
Preparation and processing of the work can be performed with the im.

According to a second aspect of the present invention, the above object is achieved.
The invention of the tilting device is a device for tilting a workpiece to a predetermined angle.
In the tilting device, a predetermined force is applied to the workpiece.
Operation imparting unit that performs a predetermined tilting operation by adding
Lifter, and the lifter is moved up and down in a swingable state.
Lifting means to work, and a sliding portion formed on the lifter
Guide section that restricts the lifter's posture by sliding and moving
Material, and the guide portion is configured such that the lifter is
In the process of moving the sliding part of the lifter
Guide so that the lifter maintains a nearly upright posture
The inclination angle of the first guide portion to be regulated and the lifter is gradually reduced.
Inclined surface on which the sliding part slides so as to increase in size
A second guide portion having a guide and regulating the guide, and the lifter
Is raised while maintaining a predetermined inclination angle.
The sliding part has a vertical surface that slides and moves, and the guide is regulated.
The third guide portion is formed continuously, and the third guide portion
The face position can be changed and adjusted, and the tilt angle of the lifter can be changed.
In addition, a control that allows a predetermined inclination angle of the workpiece to be adjusted.
It is characterized by having an adjusting mechanism.

[0011] According to this configuration, the lifting means moves up.
The lifting posture of the lifter to be lifted is as follows.
Ascended by the guide section and rises upright, then
Is gradually restricted by the guide portion of the third guide portion.
It rises while being held in the inclined position by the restriction of the id portion.
In this way, just lift the lifter by the lifting means
The lifter can be lifted in the upright position, tilted,
The three operations of ascent can be performed reliably, smoothly and easily.
You. In addition, the vertical position of the third guide part can be changed and adjusted
Change the lift inclination angle of the lifter
It should have an adjustment mechanism that can adjust the predetermined inclination angle of
Thus, for example, the adjustment is performed based on the first guide portion.
Moving the vertical surface of the third guide portion inward by the adjusting mechanism
And the inclination angle with respect to the vertical direction becomes smaller,
Then, when the vertical surface of the third guide portion is moved outward,
The angle of inclination will increase.

[0012] The invention of a valve assembling apparatus according to claim 3
Is a workpiece according to any one of claims 1 and 2.
A tilting device and fixedly disposed above the lifter after tilting
And a pressing member, wherein the pressing member includes the lifter.
Work that moves upwards at a predetermined tilt angle
Engine cylinder head valve spring
Press down against the spring force to set the retainer and cotter.
It is characterized in that it can be attached.

[0013] According to this configuration, the lifting means moves up and down.
Just lift the lid, the lifter pushes up the work,
Pressing member that is tilted, raised and fixedly arranged
This allows the valve spring to be depressed.

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

According to a ninth aspect of the present invention, the position of the guide surface of the third guide portion can be changed and adjusted, and the predetermined inclination angle of the work can be adjusted by changing the rising inclination angle of the lifter. It has an adjustment mechanism.

[0025]

[0026]

[0027]

[0028]

[0029]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 7 show an example of a work tilting apparatus and an engine valve assembling apparatus using the same according to the present invention. FIGS. 1 and 3 show side views of the entire apparatus in the same direction. FIG. 1 shows a state in which the lifter 30 is at the lower limit, and FIG. 3 shows a state in which the lifter 30 is at the upper limit. . FIG. 6 is a front view corresponding to FIG.

FIGS. 2, 4, 5 and 7 are enlarged views for easy understanding, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. 4 is a guide member of FIG. FIG. 5 is a partial horizontal sectional view of the switching mechanism, and FIG. 7 is a partial sectional enlarged view of FIG.

Here, for convenience of explanation, the directions of front, rear, left and right in the valve assembling apparatus are defined. The left side in the side views of FIGS. 1 and 3 is “front”, the right side is “rear”, and the left side in the front view of FIG. 6 is “left” and the right side is “right”. Therefore, for example, the guide member 50 described on the right side of the figure in FIG. 6 is actually disposed on the left end side of the valve assembling apparatus, and is indicated by an arrow K in FIG. Work shown (cylinder head)
The direction of movement of W is from left to right with respect to the valve assembly device.

The valve assembling apparatus according to the present embodiment is different from the work inclining apparatus in that the pressing member 60 is provided and the work W to be worked is the cylinder head of the engine. Due to the difference in the addition of elements, the description of the valve assembling apparatus will be replaced with the description of the work tilting apparatus below.

The valve assembling apparatus shown in FIG. 1 includes, as main components, an apparatus main body 10, a support member 20 which moves up and down along the apparatus main body 10, a lifter 30 supported by the support member 20 so as to be swingable, and a lifter. The apparatus includes a cylinder (elevating member) 40 that raises and lowers 30, a guide member 50 that regulates the posture of the lifter 30 during elevating and lowering, and a pressing member 60 that is attached to an upper part of the apparatus main body 10.

The apparatus main body 10 is composed of a vertically long column 12, a lower base plate 14, and an upper arm 16.
Thus, the side view is formed in a U-shape. Base plate 1
The cylinder 40 and the guide member 50 are fixed to the upper surface of the cylinder 4. The pressing member 60 is fixed to the front end of the upper arm 16, and the rear end is slidably supported in the front-rear direction by two slide guides 13 a and 13 b fixed to the upper end of the column 12. ing. An adjustment bolt 15 for finely adjusting the position of the pressing member 60 in the front-rear direction via the arm 16 is in contact with the rear end edge of the arm 16. A guide rail 18 is fixed to the front surface of the support 12 in the apparatus main body 10 so as to extend vertically.

The support member 20 is a member formed in a substantially U-shape when viewed from the side, and has a guide base 22 guided by the above-described guide rail 18 on an upper portion and a lower portion on the rear end side.
a and 22b. The front end side of the support member 20 is shown in FIG.
As shown in FIG. 7, the fork is divided into two branches, and a lifter 30 described below is swingably supported by hinge pins 24 and 26 inserted in the left and right directions above the fork.

That is, the lifter 30 is swingably supported at the middle part in the vertical direction by the above-described hinge pins 24 and 26 inserted into the bifurcated support member 20 (see FIGS. 6 and 7 clearly). It is shown). Further, at a middle portion in the left-right direction, the cylinder is connected to a cylinder 40 via a hinge pin 42 arranged coaxially with the hinge pins 24 and 26.

The lifter 30 is also swingably supported by the hinge pins 42 in the same manner as the hinge pins 24 and 26, and is moved up and down by the cylinder 40 via the hinge pins 42. The centers of the hinge pins 24, 26, and 42 are appropriately referred to as the swing center 30a of the lifter 30.

At a lower position on the left side of the lifter 30, a guide roller 32 whose center axis of rotation extends in the left-right direction is attached as a sliding portion. This guide roller 3
The reference numeral 2 is provided so as to move following a guide portion of the guide member 50 described later. The top of the lifter 30 is shown in FIG.
As can be understood from the side view of FIG. 2, the push-up unit 34 as a motion imparting unit having a gentle mountain-shaped projection is provided.

The chevron is formed corresponding to the shape of the lower surface of the work W to be pushed up. A rectangular plate-like flange 36 is formed between the push-up portion 34 and the swing center 30 a of the lifter 30, and positioning pins 38 projecting upward at four corners on the upper surface thereof. (Four) are provided. These positioning pins 38 are inserted and engaged with four reference holes H provided on a pallet P for fixedly supporting the work W from below. The work W is fixed on the upper surface of the pallet P with high positional accuracy with respect to the pallet P.
The pallet P is transported by the conveyor C in the direction of arrow K in FIG.

When the lifter 30 is in the upright posture as shown in FIGS. 1 and 2, its center of gravity is
0a. Therefore, the lifter 30 as a whole is in an unstable posture when in the upright posture, and tends to naturally lean forward or backward when a force for actively standing up is not applied.

The cylinder 40 is vertically fixed upward at the center on the front end side of the upper surface of the base plate 14 at the lower portion of the apparatus main body 10 described above. And cylinder 4
Numeral 0 has a cylinder body 43, a plunger 44 that vertically moves in and out from the cylinder body 43, and a connecting portion 46 attached to the tip of the plunger 44. As shown in FIGS. 6 and 7,
Hinge pin 4 serving as swing center 30a of lifter 30 described above
2 are penetrated in the left-right direction.

FIGS. 1 and 6 show the cylinder 40.
Is the state in which the plunger 44 is most shortened, that is,
FIG. 3 shows a state in which the lifter 30 is disposed at the lowermost limit via the hinge pin 42. FIG.
Indicates a state where it is arranged at the ascending limit.

The guide member 50 is a rectangular plate-shaped member which is provided upright on the left end side of the front end side on the upper surface of the base plate 14 at the lower part of the apparatus main body 10. A Y-shaped guide portion 52 for restricting the movement of the guide roller 32 from outside is formed on the inner side surface of the upper portion of the guide member 50. The guide portion 52 has a first guide portion 52a, second guide portions 52b1, 52b2, and third guide portions 52c1, 52c2 in this order from below (see FIG. 4).

The rear second guide portion 52b2 and the third guide portion 52c2 are used when the inclination direction of the lifter 30 is reversed as described later. The above-mentioned first guide portion 52a is provided on the guide roller 3 of the lifter 30.
The guide roller 32 is formed to be slightly wider than the outer diameter of No. 2 and allows only vertical movement by restricting the guide roller 32 from the front-back direction.

Therefore, when the guide roller 32 moves up and down along the first guide portion 52a, the lifter 30 moves up and down in a substantially upright posture. The front second guide portion 52b1 has an inclined surface, and when the guide roller 32 moves obliquely upward following the inclined surface, the lifter 30 gradually increases the inclination angle.

Further, the front third guide portion 52c1 has a vertical surface, and when the guide roller 32 moves right up following the third guide portion 52c1, the lifter 30 rises while maintaining a predetermined inclination angle. Will do. The second guide portion 52b2 rear of, the third guide portion 52c2, the inclination direction of the lifter 30 except Rukoto such Conversely, the same as in the front of the guide portion 52b1,52c1 respectively.

The above-mentioned first, second and third guide portions 51
a, 52b1, 52c1 are formed continuously, and similarly, the first, second, and third guide portions 51a, 52b2,
52c2 is also formed continuously.

The above-mentioned second guide portions 52b1, 52b2
Is the flapper (switching member) of the switching mechanism 70
71 are provided. As shown in the enlarged view of FIG. 4 and the partial horizontal sectional view of FIG. 5, the flapper 71 is fixed to the swing center shaft 72a on the base end side of the link 72.
A pin 74a is engaged with the forked portion 72b on the distal end side of the pin 2. The pin 74a protrudes from one end of a lever 74 having a swing center 74b.

The flapper 71 can be switched by manually swinging the other end 74c of the lever 74. That is, when the end portion 74c of the lever is moved to the position shown by the solid line in FIG.
The flapper 71 can be disposed at the backward inclined position (solid line) via the (solid line). On the other hand, when the lever 74 is swung and arranged at the position shown by the two-dot chain line in the same figure, the flapper 71 can be arranged at the forward inclined position (two-dot chain line) via the link 72 (two-dot chain line) and the like. .

By the switching of the flapper 71, the moving direction of the guide roller 32 of the lifter 30 can be selectively switched between the front second guide portion 52b1 and the rear second guide portion 52b2 as described later. Can be switched.

The above-described third guide portions 52c1, 52c2
Adjustment members (adjustment mechanisms) 54c1 and 54c2 for adjusting the inclination angle of the lifter 30 are attached to the. The adjusting members 54c1, 54c2 are
It is attached by a bolt penetrating a long hole in the front-rear direction drilled in the upper part of 0 and is movable in the front-rear direction. The above-mentioned third guide portions 52c1, 52c
Numerals 2 are formed on the rear end surface of the front adjustment member 54c1 and the front end surface of the rear adjustment member 54c2, respectively. Therefore, by moving the adjustment members 54c1 and 54c2 in the front-rear direction, the vertical surface on which the guide roller 32 moves following
Moves, and the inclination angle of the lifter 30 at the raised position can be finely adjusted.

That is, by moving the front adjustment member 54c1 forward, the inclination angle of the lifter 30 to the rear side is moved, and by moving the rear adjustment member 54c2 rearward, the front of the lifter 30 is moved. Can be made large. On the other hand, the adjusting members 54c1, 54c
By reversing the moving direction of 2 above, the inclination angles of the lifter 30 to the rear side and the front side can be reduced.

Next, the pressing member 60 is connected to the device main body 1 described above.
0 is fixed to the front end of the arm 16. Pressing member 60
As shown in FIG. 3, the work W has a downwardly projecting columnar convex portion 61 for compressing a valve spring S mounted on the upper end of the valve V of the work W.

In the valve assembling apparatus having the above-described configuration, a supplementary description of the conveyor C, the pallet P, and the work W will be described below.

As shown in FIG. 1, the conveyor C is disposed so as to sandwich the lifter 30 disposed at the lowermost position from the front and rear, and a transport section C1 for guiding the movement of the pallet P is formed on the upper surface. ing. As shown in FIG. 6, a stopper 82 that protrudes and retracts from below in the transport path of the pallet P is provided on the downstream side of the lifter 30 in the moving direction of the pallet P (in the direction of arrow K). An anti-back 84 that protrudes and disappears from below in the P transport path is arranged. These work pieces W are retracted with the anti-back 84 retracting downward and the stopper 82 projecting upward.
Transports the pallet P loaded with
In case of collision with the pallet 2, the anti-back 84 is projected upward to prevent the pallet P from moving in the left-right direction. The position of the pallet P at this time is referred to as a push-up position.

Further, as shown in FIG. 3, through holes P1 and P2 through which the push-up portion 34 of the lifter 30 can enter and exit are formed in the center of the pallet P. The portion 34 is configured to directly contact the lower surface of the work W.

Next, the operation of assembling the valve according to the present embodiment will be described with reference to FIGS. First, the plunger 44 of the cylinder 40 of the valve assembly device
, And the lifter 30 is arranged at the lower limit shown in FIGS. Next, the pallet C is moved and arranged at the above-described push-up position. The lever 74 is moved to the position indicated by the two-dot chain line in FIG. 4, and the flapper 71 is disposed at the position indicated by the two-dot chain line.

The plunger 44 is gradually extended to lifter 3
Increase 0. While the guide roller 32 below the lifter 30 is moving in the first guide portion 52a, the lifter 30 rises while taking an almost upright posture. When the guide roller 32 reaches the vicinity of the upper end of the first guide portion 52a, the positioning pin 38 of the lifter 30 is inserted into the reference hole H of the pallet P, and the lift of the pallet P is started. The push-up part 34 of 30 comes into contact with the lower surface of the work W, whereby the push-up of the work W is also started.

Further, the extension of the plunger 44 continues.
The guide roller 32 is moved forward by the flapper 71 shown in FIG.
When the guide roller 32 abuts (two-dot chain line), the guide roller 32 is pushed by the flapper 71 and moves forward. Then, the lifter 30 having the center of gravity above the swing center 30a shifts the center of gravity rearward from the swing center 30a and automatically leans rearward when the guide roller 32 moves forward. .

As a result, the guide roller 32 is pressed against the front second guide portion 52b1. Plunger 4
When the guide roller 32 is further moved upward by the extension of the guide roller 4, the guide roller 32 is moved to the second guide portion 52b1.
The upper part rolls obliquely forward, and the rearward inclination angle of the lifter 30 increases.

When the guide roller 32 reaches the boundary between the second guide portion 52b1 and the third guide portion 52c1, the inclination angle stops increasing and is maintained at the predetermined inclination angle. At this time, the work W is arranged at the position M2 in FIG. Further, the lifter 3 by the extension of the plunger 44
When the rise of 0 continues, the guide roller 32 rolls directly on the third guide portion 52c1. This allows
The entire lifter 30 rises while maintaining a predetermined inclination angle, and the work W rises from the position M2 in FIG. 1 to M3. During this ascent, as shown in FIG. 3, the valve spring S is compressed together with the retainer against the spring force,
The space for assembling the cotter is the valve V
(The workpiece W in FIG. 3 is M3
Position of).

If the predetermined inclination angle of the lifter 30 is set to coincide with the inclination angle of the valve V, the valve spring S is accurately pushed down in the axial direction, so that the retainer and the cotter There is no danger of mounting at an angle to the shaft.

As shown in FIG. 3, one of the slopes of the mountain of the push-up portion 34 at the upper end of the lifter 30 is
Is preferably formed to be horizontal when a predetermined inclination angle is taken. According to this, when the valve spring S is compressed, the valve V can be effectively supported from below. In addition, other slopes of Yamagata,
It is preferable that the lifter 30 is set to be horizontal when the lifter 30 is tilted forward at a predetermined tilt angle, which will be described later.

Further, the lifter 30 is not only swingably supported by the cylinder 40 through the hinge pin 42 but also through the hinge pins 24 and 26.
Since the support member 20 is also swingably supported by the support member 20 which is guided up and down by the guide rail 18, the overall operation accuracy can be improved.

Next, after assembling the retainer and the cotter, the plunger 44 of the cylinder 40 is shortened, and the lifter 30 is lowered. This lowering is the reverse operation of the above-described raising. That is, the lifter 30 is configured such that the guide roller 32
When rolling over the guide portion 52c1 of the
The second guide part 52b descends while maintaining the inclined posture.
1 When rolling upward diagonally downward, the inclination angle is gradually reduced while descending, and when moving further down along the first guide portion 52a, it descends in an upright posture. When the lifter 30 is disposed at the lower limit shown in FIG. 1, the cylinder 40 is stopped.

Then, the lever 74 is moved to the position shown by the solid line in FIG. As a result, the flapper 71 is disposed at the backward inclined position (solid line). In this state, the plunger 44
To stretch. When the guide roller 32 moves upward along the first guide portion 52a, the lifter 30 rises in a substantially upright posture. Subsequently, when the guide roller 32 comes into contact with the flapper 71, the guide roller 32 is moved rearward and rolls obliquely upward on the rear second guide portion 52b2. At this time, the tilt angle of the lifter 30 toward the front gradually increases. And the guide roller 3
When the roller 2 rolls directly on the third guide portion 52c2, it rises while maintaining a predetermined inclination angle.
At this time, the valve spring S of the work W is pushed down together with the retainer to provide a space for inserting a cotter, and the cotter is mounted in this space.

After the mounting, the plunger 44 is shortened and the lifter 30 is lowered to be positioned at the lower limit of FIG. Thus, the pallet P can be placed on the conveyor C, the stopper 82 can be lowered, and the pallet P can be moved downstream.

As described above, the retainer and the cotter can be satisfactorily mounted on the valve V of the work W by extremely simple operations such as the operation of extending and shortening the plunger 44 and the operation of switching the flapper 71.

The valve assembling apparatus described above is
As described earlier, the pressing member 60 can be omitted, and the basic structure can be used as a work tilting device with almost the same structure. Such a work tilting device can be applied, for example, to a case where a work is drilled obliquely.

[0071]

As described above, according to the work inclining device of the present invention, the posture of the lifter at the time of elevating and lowering is regulated by the guide member. Ascending, ascending, and ascending postures can be performed, so that the configuration can be simplified and the cycle time can be reduced. Further, according to the valve assembling apparatus of the present invention, the retainer and the cotter can be reliably and quickly mounted on the valve of the cylinder head with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where a lifter is lowered to a lower limit in a valve assembling apparatus according to the present invention.

FIG. 2 is a side view showing a state in which the lifter is raised to the upper limit in the valve assembling apparatus according to the present invention.

FIG. 3 is a front view showing a state where the lifter is lowered to a lower limit in the valve assembling apparatus according to the present invention.

FIG. 4 is an enlarged view of the switching mechanism in FIG.

FIG. 5 is a horizontal partial sectional view of a flapper rotating shaft portion of the switching mechanism shown in FIG. 4;

FIG. 6 is an enlarged view of a main part of FIG. 1;

FIG. 7 is an enlarged partial cross-sectional view of FIG. 3;

FIG. 8 is a general explanatory view of a valve portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Apparatus main body 20 Support member 30 Lifter 30a Swing center 32 Guide roller 34 Push-up part 40 Elevating member 50 Guide member 52a First guide part 52b1 Second guide part 52b2 Opposite second guide part 52c1 Third guide Portion 52c2 Third opposing guide portions 54c1, 54c2 Adjusting mechanism 60 Pressing member 70 Switching mechanism 71 Switching member (flapper) S Valve spring V valve W work (cylinder head)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-139533 (JP, A) JP-A-63-22236 (JP, A) JP-A-62-24925 (JP, A) JP-A-9-209 24411 (JP, A) JP-A-8-113475 (JP, A) JP-A-6-127298 (JP, A) JP-A-59-137180 (JP, A) JP-B-46-8192 (JP, B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B23P 19/00-21/00 B65G 47/96

Claims (3)

(57) [Claims] 1. A work inclining device for inclining a work at a predetermined angle, a lifter having an operation imparting section for performing a predetermined tilting operation by applying a predetermined force to the work, and the lifter is swingable. Lifting means for raising and lowering in a state in which the lifter slides, and a sliding portion formed on the lifter slides and moves.
And a guide member for restricting the posture at the time of lifting, the guide portion has, in order in the course of the lifter is moved upward from below, riff
The lifter is almost upright with the sliding part of the
A first guide portion for regulating the guide so as to maintain the force, and the sliding portion so that the inclination angle of the lifter gradually increases.
The guide has a slope before and after the moving part slides.
The front and rear second guide portions and the lifter rise while maintaining a predetermined inclination angle.
Vertical surface facing before and after the sliding part slides
Front and rear third guide portions having guide restriction
Are formed continuously , and before the sliding portion slides on the second guide portion.
Or the inclined surface of the guide part on the rear side
A tilt direction switching mechanism for switching the tilt direction of the
A work tilting device, characterized in that: 2. A work inclination for inclining a work at a predetermined angle.
In the oblique device, a predetermined force is applied to the workpiece to
Lifter having an operation imparting portion for performing an inclining operation, and lifting means for raising and lowering the lifter in a swingable state
And the sliding portion formed on the lifter slides and moves,
And a guide member for restricting the posture at the time of lifting, the guide portion has, in order in the course of the lifter is moved upward from below, riff
The lifter is almost upright with the sliding part of the
A first guide portion for regulating the guide so as to maintain the force, and the sliding portion so that the inclination angle of the lifter gradually increases.
The second part has a slope where the moving part slides and regulates the guide.
And the lifter ascends with the lifter maintaining a predetermined inclination angle
Guide having a vertical surface on which the sliding part slides
A third guide portion for regulating is continuously formed, and a vertical surface position of the third guide portion can be changed and adjusted,
Change the tilt angle of the lifter to a predetermined tilt of the work
A work inclining device having an adjusting mechanism capable of adjusting an angle . 3. The method according to claim 1, wherein
And a pressing portion fixedly disposed above the lifter after tilting.
Material, and the pressing member has a predetermined inclination angle by the lifter.
Of the engine as a workpiece
Push the valve spring of the head down against the spring force.
To make it possible to assemble the retainer and cotter.
Valve assembly equipment .