JPH04348825A - Positioning pin inserting device - Google Patents

Abstract

PURPOSE:To reliably prevent the draw back of a positioning pin during insertion of the positioning in a pin hole by providing a collet chuck to nip a push rod and the positioning pin and prevent the draw back of the positioning pin during release of the push rod from the positioning pin. CONSTITUTION:When a positioning pin is inserted in a pin hole D, the positioning pin is pushed in the pin hole D by means of a push rod 67. With this state, the part, protruded from the pin hole D, of the positioning pin is then nipped by means of a collet chuck 46. Then, after a push rod 46 is escaped upward, the collet chuck 46 is released from a lock and finally, the collet chuck is escaped upward. The above operation is effected only through expansion and contraction of a single elevating cylinder 8, an equipment cost is reduced, and reliability is also improved.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning pin insertion device used when joining two members.

0002

[Prior Art] For example, in the manufacturing process of an air conditioner compressor, when a cover body is fitted onto the casing body of the compressor and both are bolted together, positioning is used as a method for accurately positioning the two. Some use pins.

As shown in FIG. 12, a plurality of pin holes (D), for example two pin holes, are bored in the joint surface (C) of the casing body (A) with the lid body (B). A positioning hole (F) is drilled in the joint surface (E) of the lid body (B) with the casing body (A) at a location opposite to the pin hole (D).

[0004] Then, the casing body (A
), first insert the positioning pins (A) into each pin hole (D) of the casing body (A).

Next, the joint surface (C) of the casing body (A)
) and the joint surface (E) of the lid body (B), and when fitting the lid body (B) onto the casing body (A), the positioning pin (A) protrudes from the pin hole (D). The lid (B) is positioned relative to the casing body (A) by fitting the head of the lid into the positioning hole (F) formed in the lid (B).

[0006] After that, the casing body (A) and the lid body (B
), and by inserting bolts into bolt holes drilled in both of the casing body (A) and tightening the bolts using a nut runner, the lid body (B) is positioned and fixed on the casing body (A).

[0007]

[Problems to be Solved by the Invention] As described above, when the positioning pin (A) is used for positioning when the casing body (A) and the lid body (B) are connected, the positioning pin (A) is connected to the pin hole (D). ), and the positioning pin (A) is not press-fitted into the pin hole (D), but is inserted by dropping into it.

[0008] Therefore, when attempting to automate the insertion work of the positioning pin (A) into the pin hole (D), after inserting the positioning pin (A) into the pin hole (D) using an insertion head having a chuck, , the insertion head is the positioning pin (a)
The positioning pin (A) could not be reliably inserted into the pin hole (D).

[0009] For this reason, conventionally, the work of inserting the positioning pins (A) into the pin holes (D) was done by an operator manually inserting the positioning pins (A) one by one into the pin holes (D). However, the workability was very poor, and at the same time, it was a drawback to the complete automation of this type of work.

0010

[Means for Solving the Problem] A positioning pin insertion device used when inserting a positioning pin into a pin hole drilled in a workpiece is supported so as to be movable up and down by a lower lifting platform that is supported so as to be movable up and down, and a lifting cylinder. In order to elastically connect the upper elevating table, the lower elevating table, and the upper elevating table, there is a connecting rod whose lower end is fixed to the lower elevating table and whose upper end passes through the upper elevating table, and a lower elevating table around the outer circumference of the connecting rod. A spring press-fitted between the platform and the upper lifting platform, a first floating platform elastically suspended and supported below the lower lifting platform, and a lower lifting platform between the lower lifting platform and the first float platform. a second float stand supported while being elastically pressed to the side; a press-fit head supported by the lower lifting stand, the first float stand, and the second float stand; and one positioning pin on each press-fit head. a push rod storage cylinder having a cutting device for supplying the push rod, a piston rod connected to a push rod for pushing the positioning pin toward the press-fitting head, and a spring for constantly pushing the piston rod upward; The main body side is fixed to the upper lifting platform, and the tip of the piston rod, which is constantly pressed downward by the elastic force of the spring built into the main body, is connected to the first pressing cylinder connected to the cutting device, and the main body side is the upper part. The tip of the piston rod, which is fixed to the lifting platform and is constantly pressed downward by the elastic force of the spring built into the main body,
A second pressing cylinder faces the piston rod of the push rod storage cylinder, and the tip of the piston rod whose main body side is fixed to the upper lifting platform and is constantly pressed downward by the elastic force of a spring built into the main body. However, when the third pressing cylinder facing the second float table, the lower elevating table and the upper elevating table reach their lowering ends, they engage with the piston rod of the push rod storage cylinder, and the upper elevating table engages with the piston rod of the push rod storage cylinder. In order to integrate with the piston rod, it consists of a lock claw provided on the upper lifting platform,

[0011] The press-fitting head is connected to an outer cylinder whose upper end is fixed to the first float stand, an intermediate cylinder whose upper end is fixed to the second float stand and whose lower part is inserted into the outer cylinder, and whose upper end is connected to the lower part. Supported by a lifting platform,
An inner cylinder whose lower part is inserted into the intermediate cylinder and has a guide hole for passing the positioning pin in the axial direction; the rear end is inserted into the inner cylinder via a spring, and the tip is connected to the inner cylinder and the intermediate cylinder. The collet chuck is supported so as to penetrate through the collet chuck.

0012

[Function] Supplying the locating pin to the pin hole through the press-fitting head of the locating pin insertion device having the above configuration, pushing the locating pin supplied to the pin hole into the pin hole by the push rod, and collet chuck after pushing. The positioning pin is clamped, the push rod lifts away from the positioning pin after the positioning pin is clamped, the subsequent release of the positioning pin clamping by the collet chuck, and the lift and release from the positioning pin are performed by the telescopic movement of the lifting cylinder. It is something.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the overall configuration of a positioning pin insertion device (1) according to the present invention, and FIG. 2 is a sectional view taken along the line II in FIG. 1.

In the figure, (2) is a support surface that extends in the vertical direction of the positioning pin insertion position, and (3) is a support surface that extends in the vertical direction of the positioning pin insertion position.
The upper frame (4) extends horizontally from above the support surface (2), and the lower frame (4) extends horizontally from below the support surface (2).

(5) has two columns supported by the lower frame (4); (6) has a slider (7) through which the two columns (5) pass; This is a lower lifting platform that is supported so that it can be raised and lowered freely.

(8) has a bracket (9) on the support surface (2).
), (10) is an upper lifting platform connected to the tip of the piston rod of the lifting cylinder (8), (11) has its lower end fixed to the lower lifting platform (6), and the upper end a connecting rod passing through the upper lifting platform (10);
(12) is the lower lifting platform (
6) and the upper lifting platform (10), and this connecting rod (11) and the spring (12)
Due to the action of the lower lifting platform (6) and the upper lifting platform (10
) are elastically connected.

[0017] (20) is a first float table suspended and supported below the lower lifting table (6).

As shown in FIG. 3, this first float table (20) has a support shaft (21) having a tapered surface at the lower end inserted into a shaft hole (21) provided at both ends thereof and having a tapered surface at the lower peripheral edge. 22) and this support shaft (22).
) is fixed to the lower lifting platform (6), and a spring (23) is interposed between the first float platform (20) and the lower lifting platform (6). It is elastically supported.

The inner diameter of the shaft hole (21) is made slightly larger than the outer diameter of the support shaft (22), as shown in FIG. After leaving the tapered surface of (21), the first float table (20) can also be moved slightly in the horizontal direction of the lower lifting table (6).

(24) are two pilot pins protruding below the first float stand (20), and the tips of the pilot pins (24) fit into the bolt holes of the casing body (A). At the same time, the float stand (20) is lifted by the casing body (A), and the float stand (20) is lifted up by the casing body (A).
By releasing the fixation of the support shaft (22), the first float table (20) can be accurately positioned with respect to the casing body (A).

[0021] (25) is a second float stand disposed between the lower lifting stand (6) and the first float stand (20).

As shown in FIG. 4, this second float stand (25) has a support shaft (27) inserted into each of the two shaft holes (26) provided on both sides. By fixing the upper end to the lower lifting platform (6) and interposing a spring (28) between the flange at the lower end of the support shaft (27) and the lower surface side of the second float platform (25), the second float The platform (25) is supported in a pressed state by the lower lifting platform (6).

[0023] Also, the inner diameter of the shaft hole (26) is slightly larger than the outer diameter of the support shaft (27), and the second float stand (25), like the first float stand (20), is horizontally It is also designed to be slightly movable.

The second float table (25) also has a pressing bolt (29) whose tip passes through the lower lifting table (6) and faces a piston rod (88) of a third pressing cylinder (87), which will be described later. ) is screwed in.

(40) is the first float stand (20)
, a second float table (25), and a lower lifting table (6), which are two press-fit heads for inserting positioning pins supported in parallel.

As shown in FIG. 8, each press-fitting head (40) has an upper end formed in the opening (2) provided in the first float table (20).
The outer cylinder (41) is fitted and fixed to the outer cylinder (41) whose upper end is fitted and fixed to the opening (25a) provided in the second float table (25), and whose front part is fitted and fixed to the outer cylinder (41) through the bush (42). (41) Intermediate cylinder (43) for collet chuck lock inserted inside
and an inner cylinder (45) inserted into the intermediate cylinder (43) with the upper end flange part (44) fitted with the stepped part (6a) provided on the lower lifting platform (6); ) and a collet chuck (46) housed and supported at the tip of the collet chuck (46).

A discharge hole (47) for discharging the positioning pin (a) is provided at the center of the front end surface of the outer cylinder (41), and a collet is provided at the center of the front end surface of the intermediate cylinder (43). The chuck (46) is fitted onto the outer periphery of the tip and collet chuck (
Lock hole (48) for holding 46) in a locked state
is open.

The inner cylinder (45) also includes a first inner cylinder (50) having a constricted part (49) at its tip that fits with the tapered surface of the front outer periphery of the collet chuck (46), Tube (50
), the second inner cylinder (52) is shorter than the first inner cylinder (50) and has a guide hole (51) for passing a push rod (67, which will be described later) in the axial direction. There is.

[0029] Then, the first inner cylinder (50) and the second inner cylinder (50)
2) The rear end of the collet chuck (46) is arranged in the space formed between the collet chuck (46) and the second inner cylinder (5).
2) and the rear end of the collet chuck (46), the collet chuck (46) is elastically pressed forward of the inner cylinder (45).

[0030] The press-fitting head (40) having the above configuration has the following features:
In normal condition, each spring (23) (28) (53)
Due to the elastic force, the tip of the inner tube (45) comes into contact with the tip of the intermediate tube (43) as shown in the figure, and the collet chuck is pulled downward from the tips of the intermediate tube (43) and the inner tube (45). The tip of (46) protrudes and the collet chuck (
The distal end surface of the outer cylinder (41) is located below the outer cylinder (46).

Reference numeral (60) denotes a push rod storage cylinder that is erected at a position facing each press-fitting head (40) on the upper surface of the lower lifting platform (6).

As shown in FIGS. 3, 4, and 5, this push rod storage cylinder (60) includes a main body (62) that is erected on the lower lifting platform (6) via a support plate (61), Main body (6
2) A cylindrical cylinder (63) installed upright above, and inserted into the cylinder (63) while being pressed upward via a spring (64), and directed upward from the upper end of the cylinder. The main components are a piston (66) having a piston rod (65) that protrudes, and a push rod (67) extending downward from the lower end of the piston (66).

Furthermore, in the main body (60) there are cutouts for supplying positioning pins (A) one by one into the guide holes (51) of the press-fit head (40) located below the push rod (67). A device (68) is incorporated.

This cutting device (68) has a main body (68) with its axis perpendicular to the axis of the push rod (67)
a hollow shaft (69) rotatably supported within 62);
In order to rotate the hollow shaft (69), a rotary plate (70) connected to the end of the hollow shaft (69) protruding from the main body (62) and a pin hole (D) bored in the hollow shaft (69) are connected. ) and a chute (72) for supplying the positioning pin (A) to the positioning pin (A).

[0035] The rotary plate (70) also has a first plate that comes into contact with a stopper pin (73) protruding from the side surface of the main body (62).
and the second claw portions (74) and (75) are opposed to each other,
It is integrally formed with the rotary plate (70), and
A spring (76) is stretched between the main body (62) and the rotating plate (70) so that the first claw (74) of the rotary plate (70) comes into contact with the stopper pin (73) in the normal state. It has become.

In this state, the hollow shaft (6
A pin hole (D) provided in 9) communicates with the chute (72).

[0037] (77) is a pressing body for rotating the rotating plate (70) against the elastic force of the spring (76).

This pressing body (77) has a U-shape, and has contact surfaces (79) and (80) on opposite ends thereof, which come into contact with the convex portion (78) of the rotary plate (70). ing.

[0039] Also, the upper end has an upper lifting platform (10) on the main body side.
It is connected to the tip of the piston rod (82) of the first pressing cylinder (81) fixed to the upper lifting platform (10).
When the first pressure cylinder (81) descends as the pressure body (77) descends, the pressure body (77) also descends, and the contact surface of the pressure body (77) (
79) comes into contact with the convex portion (78) of the rotating plate (70), the rotating plate (70) rotates, and the hollow shaft (69) rotates.
) is made to match the guide hole (51) of the inner cylinder of the press-fitting head (40).

[0040] Also, the rotating plate (70) rotates as described above,
The second claw portion (75) of the rotary plate (70) engages the stopper pin (
73), when the upper lifting platform (10) further descends, the first pressing cylinder (81) compresses the spring (83) interposed in the cylinder of the first pressing cylinder (81). It is shortened so that the pressing body (77) does not press the rotary plate (70) any further.

[0041] As shown in FIG. 6, (84) are two second pressing cylinders arranged in a portion of the upper lifting platform (10) located above each of the push rod storage cylinders (60).

The second pressing cylinder (84) has a main body fixed to the upper lifting platform (10), and a piston rod (86) that is elastically pressed downward from the main body via a spring (85). ) is arranged to face the piston rod (65) protruding from the push rod housing cylinder (60).

Then, due to the lowering movement of the upper lifting platform (10), the piston rod (84) of the second pressing cylinder (84)
6) comes into contact with the piston rod (65) of the push rod storage tube (60), after that it compresses the spring (64) of the push rod storage tube (60) and connects it to the push rod (67). The upper lifting platform (10) is lowered while lowering the piston rod (66).

Further, when the upper lifting platform (10) further descends after the push rod (67) reaches the lowering end, the second pressing force is applied while compressing the spring (85) of the second pressing cylinder (84). The cylinder (84) is designed to be shortened.

(87) is the two second pressing cylinders (
84) A third pressing cylinder located between.

[0046] This third pressing cylinder (87)
Similarly to the second pressing cylinders (81) and (84), the main body side is fixed to the upper lifting platform (10), and the tip of the piston rod (88) extending downward is connected to the second floating platform (25).
It is arranged to face a pressing bolt (29) protruding from.

Then, due to the lowering movement of the upper lifting platform (10), the piston rod (8) of the third pressing cylinder (87)
8) is connected to the pressing bolt (25) of the second float stand (25).
29), the second float table (25) lowers with respect to the lower lifting table (6) while compressing the spring (28).

[0048] Furthermore, when the upper lifting table (10) further descends after the second float table (25) reaches the lowering end, the spring (89) of the third press cylinder (87) is compressed and the third The pressure cylinder (87) is shortened.

(90) is the second pressing cylinder (84)
This is a locking claw placed on the side of the

As shown in FIGS. 6 and 7, this lock claw (90) is rotatably supported by the upper lifting platform (10) via a pin (91), and is supported by a spring (92).
It is constantly pressed inward by the

Then, due to the lowering movement of the upper lifting platform (10), the piston rod (84) of the second pressing cylinder (84)
6) comes into contact with the piston rod (65) of the push rod storage tube (60), the upper lifting platform (10) descends together with the piston rod (65) connected to the push rod (67), and the push rod ( 67) reaches the lowering end, the upper lifting platform (10) further moves to the second pressing cylinder (8
4), this lock claw (90
) The first tapered surface (93) at the tip of the piston rod (65
) over the flange part (65a) at the upper end and lock the lock claw (9).
The step portion (94) of 0) engages with the lower surface of the flange portion (65a), so that the upper lifting platform (10) and the piston rod (65) are integrated.

(95) is caused by the upper frame (3).
This is a lock release roller placed on the movement path of the lock claw (90), and when the second tapered surface (96) at the tip of the lock claw (90) comes into contact with this roller (95), the lock claw (90) is rotated against the elastic force of the spring (92), and the lock pawl (90) is separated from the flange portion (65a) at the upper end of the piston rod (65).

[0053] The positioning pin insertion device (
When the work for inserting the positioning pin (A), for example, the casing body (A) of a compressor, is transported and positioned and fixed under the press-fit head (40) of 1), the lifting cylinder (8) is shortened. Begin to.

Then, the upper elevating table (10) supported by the elevating cylinder (8) and the lower elevating table (6) connected to the upper elevating table (10) via the connecting rod (11) and the spring (12). ) begin to descend together.

Then, first, the pilot pin (24) protruding from the first float table (20) suspended below the lower lifting table (6) is inserted into the bolt hole drilled in the casing body (A). As shown in FIG. The lowering operation of the first float table (20) is stopped.

At this time, the first float table (20) is designed to be able to move slightly in the horizontal direction with respect to the lower lifting table (6), so when the pilot pin (24) fits into the bolt hole, The casing body of the first float stand (20) (
Positioning in the horizontal direction with respect to A) is performed accurately, and the axis of the press-fit head (40) and the axis of the pin hole (D) precisely match.

[0057] As described above, the first float stand (20)
After the lowering operation of the lift cylinder (8) is further shortened, the first float stand (20) and the upper lift stand (1
Since the upper lifting platform (10) and the lower lifting platform (6) continue to descend while compressing the spring (23) between them,
Next, the intermediate cylinder (4) supported by the second float stand (25)
3) and the inner cylinder (45) further descend, and the collet chuck (46) protrudes from the intermediate cylinder (43) and the inner cylinder (45).
The distal end surface of the collet chuck (46) comes into contact with the distal end surface of the outer cylinder (41), and the collet chuck (46) stops descending.

In this state, when the lifting cylinder (8) is further shortened, the first float table (20) and the lower lifting table (6)
The elastic force of the spring (23) between the inner cylinder (45) and the collet chuck (46) is
The elastic force of the spring (12) between the upper lifting platform (10) and the lower lifting platform (6) is stronger than that of the lower lifting platform (6).
The lowering of the upper platform (10) is temporarily stopped, and only the upper platform (10) continues to descend while compressing the spring (12).

[0059] Then, first, the pressing body (77) connected to the first pressing cylinder (81) whose main body side is fixed to the upper lifting table (10) descends with the lowering movement of the upper lifting table (10). By continuing the operation, the lower lifting platform (6)
It comes into contact with the convex portion (78) of the rotary plate (70) supported on the side and rotates the rotary plate (70).

Therefore, the hollow shaft (69) connected to the rotary plate (70) rotates, and the positioning pin supplied from the chute (72) and located in the through hole (71) of the hollow shaft (69) is rotated. (A) is located directly above the guide hole (51) of the press-fitting head (40), passes through the guide hole (51) from the through hole (71), and falls into the collet chuck (46); The casing body (A) passes from the collet chuck (46) through the discharge hole (47) of the outer cylinder (41).
) into the pin hole (D).

After this, the lifting cylinder (8) further shortens, and the upper lifting platform (10) continues to descend while shortening the first pressing cylinder (81), and then the second pressing cylinder (84) ) comes into contact with the piston rod (65) of the push rod storage cylinder (60),
In order to press the piston rod (65) downward, the push rod (67) in the push rod housing cylinder (60) starts to descend, and this push rod (67) is inserted into the guide hole (51) of the press-fit head (40). and further reaches the collet chuck (46), the lower part of the positioning pin (A) whose upper part is located in the collet chuck (46) is inserted accurately into the pin hole (D) of the casing body (A). , and the push rod (67) also reaches its lower end.

[0062] After this, when the upper elevating table (10) further descends due to the shortening operation of the elevating cylinder (8), the upper elevating table (10) is moved by the spring (12) and the first
The springs (83) and (85) of the second pressure cylinders (81 and 84) are compressed while descending, so the springs (23 and 53) move the lower platform (6) upward. The upper lifting platform (10
) presses the lower platform (6) downward again, so the lower platform (6) presses the upper platform (1) again.
0), the descending operation starts.

Then, since the second float table (25) located below the lower table (6) also descends together with the lower table (6), the inner cylinder (45) supported by the lower table (6)
) and the intermediate cylinder (43) supported by the second float table (25) are lowered together, and as shown in FIG. 10, the inner cylinder (45)
) comes into contact with the tapered surface (46a) of the collet chuck (46), thereby tightening the collet chuck (46).

[0064] When the inner cylinder (45) reaches the lowering end, the lower lifting platform (6) supporting the inner cylinder (45) also reaches the lowering end, so from now on, only the upper lifting platform (10) falls further.

Then, the piston rod (88) of the third press cylinder (87) whose main body side is fixed to the upper lifting table (10) is moved by the press bolt (29) of the second float table (25).
) and presses the second float (25) downward, so the second float (25) further descends together with the upper lifting platform (10) against the elastic force of the spring (28).

As a result, the intermediate cylinder (43) supported by the second float table (25) also descends further, and as shown in FIG. ) In order to fit around the outer periphery of the tip and lock the collet chuck (46), use the positioning pin (A).
is accurately inserted into the pin hole (D) of the casing body (A) and positioned and fixed, and the upper lifting platform (
10) also reaches the lowering end, and the shortening operation of the lifting cylinder (8) also stops.

Also, at this time, the lock claw (90) provided on the upper lifting platform (10) locks the flange portion (65) of the piston rod (65) protruding from the push rod housing cylinder (60).
a), the upper lifting platform (10) and the piston rod (65) are integrated.

In this state, when the elevating cylinder (8) starts to extend, only the upper elevating table (10) starts to rise, and the upper elevating table (10) and the lock claw (90
), the push rod (67) connected to the piston rod (65), which is integrated with the piston rod (65), rises.
The push rod (67) is reliably separated from the positioning pin (A) and reliably prevents the positioning pin (A) from being taken away.

When the upper lifting platform (10) further rises, the piston rod (88) of the third pressure cylinder (89) first separates from the second float platform (25). ) is raised by the elastic force of the spring (28), and the intermediate cylinder (43) integrated with the second float stand (25) also rises, so the collet chuck (
46) is unlocked.

Next, as the lower lifting platform (6) starts to rise, the inner cylinder (45) rises, and the aperture hole (49) of the inner cylinder (45) aligns with the tapered surface (46) of the collet chuck (46).
46a), the collet chuck (46) opens, ensuring that the locating pin (A) remains in the pin hole (D) of the casing body (A).

[0071] After that, each member is raised one after another in the reverse order of the contraction of the elevating cylinder (8), and each member returns to its original state shown in Fig. 1, completing one insertion operation. .

Furthermore, as the upper lifting platform (10) rises, the piston rod (65) of the push rod housing cylinder (60) rises together with the lock claw (90), and the lock claw (
90) passes the side of the lock release roller (95) and comes into contact with the second tapered surface (96) of the lock claw (90), the lock claw (90) touches the flange (65a) of the piston rod (65). ), and the lock pawl (90) and piston rod (65) return to their original states shown in FIG.

[0073] Also, the hollow shaft (6
The next positioning pin (a) is supplied from the chute (72) into the through hole (71) of 9), and preparation for the next insertion operation is automatically completed.

[0074] Thereafter, by repeating the above operation,
The operation of inserting the positioning pin (A) into the pin hole (D) of the casing body (A) is continuously and automatically repeated.

[0075]

[Effects of the Invention] As explained above, the positioning pin insertion device according to the present invention, when inserting the positioning pin into the pin hole,
Push the positioning pin firmly into the pin hole with the push rod, then, in this state, clamp the part of the positioning pin protruding from the pin hole with a collet chuck, then release the push rod upward, and then The locating pin is inserted into the pin hole by unlocking the collet chuck and finally letting the collet chuck escape upwards, thus ensuring that the locating pin is prevented from being taken back after it has been inserted into the pin hole. I can do it,
This type of work can be automated.

[0076] Furthermore, the present invention enables the above series of operations to be performed only by the telescoping and retracting operations of a single lifting cylinder, so the equipment cost is lower than when this type of work is performed by an industrial robot. At the same time, it is possible to provide a device that is more reliable than industrial robots, etc.

[Brief explanation of drawings]

FIG. 1 is a side view showing the overall configuration of a positioning pin insertion device according to the present invention.

FIG. 2 is a sectional view taken along line II in FIG. 1.

FIG. 3 is a partially sectional side view showing a lower lifting platform and a push rod storage cylinder.

FIG. 4 is a partially sectional front view showing the lower lifting platform and the push rod storage cylinder.

FIG. 5 is a cross-sectional view showing a push rod storage cylinder.

FIG. 6 is a partially sectional front view showing the relationship between the push rod housing cylinder and the second pressing cylinder.

FIG. 7 is a partially sectional side view showing the relationship between the push rod housing cylinder and the lock claw.

FIG. 8 is a sectional view showing a press-fit head.

FIG. 9 is a sectional view showing a state in which the press-fit head is in contact with the casing body.

FIG. 10 is a sectional view showing a positioning pin inserted into a pin hole by a press-fitting head.

FIG. 11 is a cross-sectional view showing the positioning pin being held by the collet chuck of the press-fitting head.

FIG. 12 is a sectional view showing a casing body having a pin hole and a lid pair.

[Explanation of symbols]

D Pin hole A Locating pin 1 Positioning pin insertion device 6 Lower lifting platform 8 Lifting cylinder 10 Upper lifting platform 11 Connecting rod 12 Spring 20 1st float stand 22 Support shaft 23 Spring 25 Second float stand 27 Support shaft 28 Spring 40 Press-fit head 41 Outer cylinder 43 Intermediate cylinder 45 Inner cylinder 51 Guide hole 53 Spring 60 Push rod storage tube 64 Spring 65 Piston rod 67 Push rod 68 Cutting device 81 First pressure cylinder 82 Piston rod 83 Spring 84 Second pressure cylinder 85 Spring 86 Piston rod 87 Third pressure cylinder 88 Piston rod 89 Spring 90 Lock claw

Claims (1)

[Claims] [Claim 1] A positioning pin insertion device used when inserting a positioning pin into a pin hole drilled in a workpiece is mounted on a lower lifting platform that is supported in a vertically movable manner and an upper lifting platform that is supported in a vertically movable manner by a lifting cylinder. and a connecting rod whose lower end is fixed to the lower lifting platform and whose upper end passes through the upper lifting platform in order to elastically connect the lower lifting platform and the upper lifting platform; A spring press-fitted between the platform and the first float platform, which is elastically suspended and supported below the lower platform, and an elastic force on the lower platform side between the bottom platform and the first float platform. a second float table supported in a pressed state; a press-fit head supported by the lower lifting table, the first float table, and the second float table; a push rod storage cylinder having a cutting device, a piston rod connected to a push rod for pushing the positioning pin toward the press-fitting head, and a spring for constantly pushing the piston rod upward;
The main body side is fixed to the upper lifting platform, and the tip of the piston rod, which is constantly pressed downward by the elastic force of the spring built into the main body, is connected to the first pressing cylinder connected to the cutting device, and the main body side is the upper part. Fixed to the lifting platform,
The tip of the piston rod, which is constantly pressed downward by the elastic force of the spring built into the main body, is fixed to the second pressing cylinder, which faces the piston rod of the push rod storage cylinder, and the main body side is fixed to the upper lifting platform. The tip of the piston rod, which is constantly pressed downward by the elastic force of a spring built into the main body, is connected to a third pressing cylinder whose tip faces the second float table, and a lower lifting table and an upper lifting table. When the lowering end is reached, the press-fitting head engages with the piston rod of the push rod storage cylinder and integrates the upper lifting platform and the piston rod. , an outer cylinder whose upper end is fixed to the first float stand, an intermediate cylinder whose upper end is fixed to the second float stand and whose lower part is inserted into the outer cylinder, and whose upper end is supported by the lower lifting stand and whose lower part is An inner cylinder that is inserted into the intermediate cylinder and has a guide hole for passing the positioning pin in the axial direction; the rear end is inserted into the inner cylinder via a spring, and the tip passes through the inner cylinder and the intermediate cylinder. A positioning pin insertion device characterized in that it is formed by a collet chuck supported so as to