JPS635224B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic stud implantation device used, for example, in the automobile and furniture industries.

[Conventional technology]

Although automatic stud implanters of the type described in U.S. Pat. No. 179,444 work very well in some applications, it has been found that the jaws of the device can break or shear.

[Problem that the invention seeks to solve]

The main objectives of the present invention are that it can be easily and quickly assembled with a very small number of tools, that it is easier to fabricate compared to conventional automatic stud implanters, and that the maximum outer diameter An object of the present invention is to provide an automatic stud implanting device which is smaller than the conventional stud implanting device and can be used in a work place where a conventional larger automatic stud implanting device cannot be used.

[Means for solving problems]

The automatic stud implantation device of the present invention includes: a body 10; a rotatably driven carriage 40 having a peripheral wall within the body 10 and having a cavity formed along its long axis; at least one holding ball 44 held in the peripheral wall of the carriage 40 and protruding from the inner surface of the peripheral wall; at least one locking ball 46 held in the peripheral wall of the carriage 40 and protruding from the inner surface of the peripheral wall; A presser ball hole 45 and a locking ball hole 47 that hold the presser ball 44 and the locking ball 46, respectively, in the peripheral wall, and a pair of opposing studs that grip a stud assembled in a substantially cylindrical shape in the cavity. Jiyo 5
0 is provided, and the carriage 50 is connected to the carriage 40.
The pivot shaft of the plunger 60 enters and partially exits the interior of the plunger by reciprocating motion, the reciprocating motion is limited by the presser ball 44 and the locking ball 46, and the jyo 50 is supported by the jyo. 65, and provided with gripping means 54 for non-rotatingly gripping the stud when the jaw 50 is in the closed position and loosening the stud when the jaw 50 is in the open position. In the implantation device, a threaded portion 54 for gripping the stud is provided inside the jaw 50 assembly as the gripping means 54, and a presser foot is formed on each surface of the jaw 50 to cooperate with the presser ball 44. a locking protrusion 43 extending from the inner surface of the peripheral wall in the vicinity of the bottom edge of the carriage 40, with a locking groove 58 formed to cooperate with the groove 56 and the locking ball 46; In order to cooperate with this, a locking tongue piece 57 is provided on the surface of the jaw 50, and the engagement portion between the locking protrusion 43 and the locking tongue piece 57 is connected to the gripping means 54 and the pivot. The locking protrusion 43 and the locking tongue 57 are provided between the shaft 65 and the locking protrusion 43 and the locking tongue 57 to prevent the locking tongue 50 from falling off the carriage 40 when the wheel 50 is in the open position. having engaged surfaces 43 and 57, the combined surfaces contacting and preventing dislodgement of the jaw 50;
said engaged surface 43 when in the closed position;
and 57 do not engage, and the carriage 40
This is an automatic stud implantation device configured to be moved axially relative to each other.

Further, the automatic stud implantation device is provided,
This is an automatic stud implanting tool configured to rotate the carriage 40, thereby rotating the jaw 50, thereby screwing the stud into the workpiece.

〔Example〕

The automatic stud implantation device of the present invention includes a body 10, a collar 20, a driven head 30, a carriage 40,
It includes two sets of balls (two hold-down balls 44 and two locking balls 46), a set of jaws 50, a plunger 60, and a stud pick-up-alignment member 70 provided in the carriage.
As shown in FIG. 2, the stud implantation device (hereinafter referred to as stud driver) in the assembled state consists of three coaxial cylindrical bodies, namely a body 10;
The inner carriage 40 has a driven head 30 also located in the barrel 10.

These driven heads 30 and carriages 40
is fixed to the inside of the body 10 by a collar 20 that engages with the external threads of the body 10. The driven head 37 and the carriage 40 are connected to a head step 12 and a carriage step 14 formed in the body 10, respectively.
This prevents it from sliding through the interior of the barrel 10 (FIG. 4).

In operation, the driven head 30 is attached to the drive. The drive provides rotational and reciprocating motion to the stud driver. On the other hand, the driven head 3
0 is also coupled to the carriage 40 and is configured to transmit power and drive from the drive device to the carriage 40.

The carriage 40 is the housing for the assembly of the jaw 50. The jaw 50 is assembled around the plunger 60 to form a cylindrical shape and is held together by the hollow inner surface of the carriage 40 (FIG. 2). An opening is formed in the bottom of the assembly of the jaw 50 by a grooved threaded portion 54 serving as a gripping means. A stud is inserted through this opening and gripped by jaw 50.

To assemble the stud driver, the jaw 50 is held around the plunger 60 and then inserted into the carriage 40. Next, presser ball 4
4 and the locking ball 46 are respectively placed in the holding ball hole 45 and the locking ball hole 47 in the carriage 40, and the carriage 40 is slidably inserted into the body 10. Further, the columnar part 41 on the carriage 40 is slidably inserted into the groove 34 in the driven head 30, so that the carriage 40 is inserted into the body part 10 from above.
Slide it in. The collar 20 is then slid onto the driven head 30 and screwed onto the body 10;
Then, the collet 80 (FIG. 1) is tightened to the collar 20, and the collar 20 is fixed to the body, completing the assembly of the stud driver. Also collection 8
1 can be used to fix accessories such as a dustproof cover and a trip gauge to a tool.

In some cases, the stud pickup alignment member 70 can be slidably mated against the end of the carriage 40. Hole 71 in stud pickup alignment member 70 is aligned with threaded hole 48 in carriage 40, and set screw 78 is threaded into carriage 40.

When disassembling the stud driver, the reverse procedure is used. In order to remove the carriage 50 from the carriage 40, first remove the carriage 40.
must be removed from the body 10, the stud must be inserted into the jaw 50, and the jaw must be closed.

When assembling and disassembling the stud driver, a hex wrench is required for the set screw when using the stud or stud pick-up alignment member, a set of wrenches for the collar 20, the collector 80 and the attached collector 81, and the driven head 30. It would be good if there was. The advantage of the easy-to-assemble stud driver is that it saves time when maintaining the stud driver.

In this stud driver, the means for gripping the stud is a jaw 50. A semi-cylindrical recess 51 is formed on the inner surface of each jaw 50 along the longitudinal direction of the jaw. The lower part of this recess 51, ie, the threaded part 54, is cut to fit the thread of the stud. Therefore, Jiyo 5
When the stud 0 is closed against the stud, the threaded portion 54 of the jaw 50 allows the stud to be gripped without any damage to the threads of the stud.

A plunger 60 is fitted into the upper part of the recess 51 above the threaded part 54. This plunger 60
is supported in the recess 51 of the jaw 50 by a pivot shaft 65. The pivot shaft 65 is slidably attached to the threaded shaft 66 of the plunger 60, and the pivot shaft 65 is attached to the pivot groove 55 of the jaw 50.
Fits inside. This pivot groove 55 is provided at right angles to the longitudinal recess 51. A plunger 60 urges the lower portion of the jaw 50 downwardly to allow the jaw 50 to slide relative to the stud. The jaw 50 is opened by the annular portion 62 of the plunger 60 which is biased toward the opening groove 53 in the recess 51 of the jaw 50 and away from the closing groove 52 . The radius of the closing groove 52 is the annular portion 62
Since the radius of the jaw 50 is larger than the radius of the annular part 6
2 is in the closing groove 52, it can be closed. However, since the annular portion 62 is biased toward the open groove 53 having a smaller radius than the closed groove 52,
The lower portion of the jaw 50 is expanded as the annular portion 62 is pushed into the opening groove 53. jiyo 5
This expansion of the threads disengages the threaded portion 54 from the stud and releases the stud. The lower part of the annular portion 62 is inclined inwardly, and the annular portion 62
can slide smoothly from the closed groove 52 to the open groove 53.

The annular portion 62 and the entire lower half of the plunger 60 are biased downwardly in the jaw 50 and against the opening groove 53 by a coil spring 64 . The coil spring 64 presses upwardly a pivot shaft 65 that is slidably attached to a screw shaft 66. The pivot shaft 65 is prevented from falling off the screw shaft 66 by the hexagonal head of the screw shaft 66.
A bottom 63 of the plunger 60 extends into the threaded portion 54 of the jaw 50. As the stud is inserted into the jaw 50, the end of the stud pushes up the bottom 63 of the plunger 60 and pushes the plunger 60, including the annulus 62, up in the recess 51 by overcoming the biasing force. . Annular portion 62 slides into closing groove 52 to allow jaw 50 to be closed against the stud.

The outer diameter of the jaw 50 and plunger 60 assembly and the inner diameter of the hollow carriage 40 are approximately equal to allow the jaw 50 to fit snugly into the carriage 40. A close fit between the jaw 50 and the carriage 40 is necessary to retain the locking ball 46 and the hold down ball 44 in the carriage 40 and to allow them to protrude into the locking groove 58 and the hold down groove 56 of the jaw 50.

The inside diameter of the carriage 40 is configured with a locking ball hole 47 to allow room for the jaw 50 to expand.
It increases in size from just above to the lower locking protrusion 43. Additionally, the diameter of the jaw assembly is reduced at the neck 57A between the closing mouth 59 and the locking tongue 57 to allow the jaw 50 to expand further. jiyo 50
The neck 57A is thinner than most other parts of the jaw 50. Therefore,
At this neck portion 57A, the strength of the jaw 50 is relatively weak. In order to maintain the strength of the jaw, the neck 57A is made shorter than the length of the jaw 50. Furthermore, the area of other notches in the jaw 50 that also reduce the thickness of the jaw, such as the scale-shaped holding groove 56 and the shallow locking groove 58, can also be compared depending on the shape and width of these notches. It is considered to be small. jiyo 50
By having such fewer and smaller incisions, the strength of the jaw 50 is maintained and the risk of shearing or breaking is greatly reduced.

A cylindrical assembly consisting of jaw 50 and plunger 60 is housed in carriage 40. Carriage 40 is a hollow cylindrical body with a closed top end 42 . It should be noted that although the jyo-plunger assembly can be easily slid into the interior of the carriage 40, the jyo-50 does not easily slide out once inserted. Three means are provided to prevent the carriage 50 from slipping out of the carriage 40: a hold-down ball 44 placed in the peripheral wall of the carriage 40; a lock also placed in the peripheral wall of the carriage 40; This is a locking protrusion 43 provided along the inner surface of the ball 46 and the carriage 40 (see FIG. 3).
Carriage 4 along the inner circumference of carriage 40
This locking protrusion (step) 43 forming a circle perpendicular to the axis of
The open jaw 5 cooperates as a locking member for the
0 is prevented from slipping out of the carriage 40. When the carriage 40 is in the body 10, the presser ball 44 prevents the jog 50 from completely sliding out of the body 10, regardless of whether the jog 50 is open or closed.

The presser ball 44 is held in a presser ball hole 45 in the peripheral wall of the carriage 40. Presser ball 44
is larger than the thickness of the peripheral wall of the carriage 40. Therefore, when the carriage 40 is in the body 10 and the wall of the carriage 40 is flush with the inner surface of the body 10, the presser balls 44 protrude through the inner surface of the peripheral wall of the carriage 40 (see FIG. 2). . The jaw 50, which fits closely into the carriage 40, competes with the presser ball 44 for space inside the carriage 40. The presser ball 44 is pushed into the presser groove 56. The jyo assembly has a thickness such that the jyo 50 can fit between the protruding presser balls 44 only when the presser balls 44 enter the diametrically opposed presser grooves 56. The holding groove 56 has a length sufficient to allow the jaw 50 to slide up and down within a certain range inside the cylindrical case of the carriage 40. Within this range, the jaw 50 can slide outwardly from the carriage 40 until its locking tongue 57 almost engages the locking projection 43 of the carriage 40, and the jaw 50
can be slid against the interior of the carriage 40 until the bottom of the carriage 50 is approximately flush with the bottom of the carriage 40. The holding groove 56 has a scale-like shape, and the wide bottom of this scale-shaped portion is directed toward the closing opening 59 of the jaw. Although less preferred, it is also possible to provide a further narrow and shallow portion below this wide and deep portion.

While the jaw 50 is out of engagement with the stud and partially outside the carriage, the retainer ball 44 is at the narrow top of the retainer groove 56 to align the retainer groove 58 with the retainer ball 46. . However, when the jaw 50 engages the stud and thus rises into the interior of the carriage 40, the hold-down ball 44 enters the wide bottom of the hold-down groove 58, thereby causing the hold-down ball 44 to move into the hold-down groove 58. You will no longer be constrained by the aspects of

The jaw 50 is also held within the carriage 40 by a locking ball 46. Locking ball 46
is held in a locking ball hole 47 in the peripheral wall of the carriage 40. As with the hold-down ball 44, the diameter of the locking ball 46 is greater than the thickness of the peripheral wall of the carriage 40. The locking balls 46 are therefore pushed through the inner surface of the peripheral wall of the carriage 40.

The locking ball 46 projects through the carriage wall into a locking groove 58. Without the locking groove 58, the thickness of the cylindrical jaw assembly would prevent the locking ball 46 from entering the carriage 40 between the barrel 10 and the jaw 50. Each locking groove 58
are cut into the circumferential wall of the jaw 50 parallel to the longitudinal recess 51. The locking groove 58 has an inverted scale shape, so that the holding groove 56
A smooth transition is made between the alignment function of the locking groove 58 and the alignment function of the locking groove 58. The locking groove 58 is of sufficient length to allow the jaw 50 to slide up and down within the carriage 40 with the locking ball 46 in the groove 58. However, the jaw 50 cannot completely escape from the carriage 40 as long as the locking ball 46 is in the groove 58.

All of these elements prevent the jog 50 from sliding completely out of the carriage 40.
The jaw 50 can slide through the carriage 40 a certain amount. This constant amount of sliding movement of the jaw 50 is the measure by which the jaw 50 is opened or closed. When the jaws 50 are partially slid out of the carriage 40 as shown in FIG. 2, the jaws 50 are opened by the bias from the plunger 60. When the stud is inserted inside the jaw 50, the stud attaches the jaw 50 to the carriage 4.
Push up against the inside of 0 and close the opening 5 of JIYO 50.
9 is engaged with the tapered surface 49 of the carriage 40. This engagement of the closing mouth 59 and the tapered surface 49 causes the lower half portions of the jaw 50 to move closer together as the jaw 50 gradually slides upwardly into the carriage 40, until the jaw 50 is in the stud position. The opening 59 is tightly closed against the tapered surface 49 so that the closing opening 59 no longer slides upwardly against the tapered surface 49. When this occurs, the jaw 50 is completely closed against the stud. This tapered surface forms a preferred closure protrusion for cooperation with the jaw.

The locking ball 46 is coupled to the side surface of the locking groove 58 to prevent the jaw 50 from rotating inside the carriage 40. Since the locking groove 58 is shallower than the bottom of the presser groove 56, only the locking ball 46, not the presser ball 44, is coupled to the jaw 50. Therefore, depending on the stud, the jaw 50 will not be rotated in the carriage 40 when the stud is being rotated into the workpiece.

Power and motion are provided to the stud driver via the driven head 30. Driven head 30
is rotatably retained in body 10 by engaging collar 20 with tongue 33 of driven head 30. A groove 34 is cut through the bottom of the driven head 30 perpendicular to the axial direction of the driven head 30. This groove 34 is slidably and non-rotatably engaged with a column 41 at the top of the carriage 40. The top end 31 of the driven head 30 is attached to a drive device, such as a drill press, which provides reciprocating and rotational movement to the stud driver.

The driven head 30 is connected to the body 1 by the collar 20.
It is held in 0. The collar 20 is screwed onto the top of the body 10. Collar 20 is engaged with tongue 33 and bearing surface 35 of driven head 30. Collar 20 holds driven head 30 concentrically with body 10 by engagement of bearing surface 35 with a similar bearing surface inside the collar.

A flat surface 32 is cut out in the upper cylindrical surface of the driven head 30 so that the driven head 30 can be tightened to the drive device using a wrench.
A similar flat surface is also cut into the outer cylindrical surface of the collar 20 to form a grip for tightening the collar 20 to the barrel with a wrench. The collet 80 also has a flat surface for a wrench and is tightened upwardly against the collar 20 as a locking mechanism to prevent the collar 20 from loosening due to vibrations during operation of the stud driver.

An optional stud pick-up and alignment member 70 captures the stud and holds it there until the stud is inserted into the jaw 50. The stud pick-up and alignment member 70 first aligns the stud coaxially with the jaw 50 prior to insertion of the stud into the jaw 50.

The bottom of the stud pick-up and alignment member 70 has an inverted table-shaped end 74 with four symmetrically arranged holes 75 on the sides of this end 74.
One of the many pins 73 in each hole is held therein. Head 76 of each pin 73
is prevented from slipping out from the hole 75. Pin 73 is biased inwardly against the axis of stud pick-up and alignment member 70 by a resilient O-ring 72. Pin 73 engages the end of the stud to position the stud relative to the center of jaw 50 when the stud is inserted into the stud driver. The engagement of pin 73 on the stud is not very strong, so the stud
3 and can be rotated in the pin 73. Stud pick up - alignment member 7
0 is held to the carriage 40 by two diametrically opposed setscrews 78 which are surrounded by corresponding grooves 71 in the peripheral wall of the stud pick-up and alignment member 70. The set screw 78 is inserted into the set screw hole 48 in the carriage 40.
It is fixed therein and protrudes from the peripheral wall of the carriage 40. The set screw 78 is a stud pick-up.
The alignment member 70 is inserted into the carriage 40 after being slid against the end of the carriage 40. Groove 71 and set screw 78 allow stud pick-up and alignment member 70 to slide up and down a predetermined distance relative to carriage 40.

In operation, the assembled stud driver is mounted by its driven head 30 to a drive system. At the beginning of the series of steps (see Figure 2), the carriage 50 is open and a portion of it is attached to the carriage 40.
outside of. If the stud driver is equipped with a stud pick-up and alignment member 70, the stud is first inserted into the stud driver through the stud pick-up and alignment member 70, and this member 70 captures the stud so that the stud is not in position. 50 until it is inserted. The stud is normally retained in the stud pick-up-alignment member 70 until it contacts the threaded stud portion formed by the slotted thread portion 54, at which point the stud pick-up-alignment member 70 releases the stud opening. 50 so that the stud is pushed into the interior of the jaw 50. As the stud is further inserted into the stud driver, the end of the stud abuts the bottom 63 of the plunger 60. When the stud overcomes the biasing force of the coil spring 64, the stud slides the annular portion 62 upwardly in the jaw 50 from the open groove 53 to the closed groove 52 of the jaw 50. When the annular portion 62 of the plunger 60 abuts the top of the closing groove 52 of the jaw 50, this upward movement of the stud forces the plunger-jyo assembly upwardly in the carriage 40. When the jyo 50 slides upward inside the carriage 40, the closing opening 59 of the jyo 50 slides into contact with the tapered surface 49 inside the carriage 40, and the groove threaded portion 54 of the jyo 50 is moved against the stud. Close tightly.

In stud drivers of the type described in US Patent Application No. 179,444, a cam step was required to move locking ball 46 out of jaw 50 during opening of jaw 50. In the present invention, such a cam step is not necessary since the locking ball 46 can enter the locking groove 58 when the jaw 50 is opened and closed. Since a cam surface (step) is not required, it is no longer necessary to move the carriage 40 up and down inside the body 10. The length of the locking groove is approximately equal to the length of the holding groove. This length determines the distance that the jaw 50 reciprocates.

Since it is not necessary to reciprocate the carriage 40 within the body 10, the body 10 is primarily useful for structural integrity and for retaining the hold down balls 44 and locking balls 46 in holes in the carriage 40. This is to keep it safe. Therefore, for less stressful applications, this body 10 may be omitted altogether, and instead a thin sleeve or band may be provided on the outside of the carriage 40 to keep the balls in place. good. Similarly, the driven head 30 can be integrated with the carriage 40 since the carriage 40 does not need to be reciprocated. A head step in the carriage 40 is therefore unnecessary.

When the stud driver is first started and rotates the stud relative to the workpiece, the stud encounters resistance as it is screwed into the workpiece and rotates within the threaded portion 54 of the jaw 50. However, as the stud rotates within this threaded portion 54, it becomes increasingly screwed upward into the jaw 50 until it finally abuts the bottom 63 of the plunger 60. The bottom part 63 of the plunger is formed by an annular part 62 that abuts the top of the closing groove 52.
It is made so that it does not rise within 0. Once the stud is raised to the bottom 63, the stud will no longer rotate up into the interior of the jaw 50. In this respect, the stud is equipped with a carriage 4
0, the locking ball 46 connects with the side surface of the locking groove 58 to prevent the jog 50 from rotating inside the carriage 40. The stud is prevented from rotating in the jaw 50 by the plunger bottom 63 and
0 is coupled to the locking groove 58 of the locking ball 46
When the stud is prevented from rotating in the carriage 40 by the stud, the stud is rotated down into the workpiece.

After inserting the stud completely into the workpiece, pull the stud driver holding the stud to release it from the stud. Jiyo 50 has a closed mouth 5
9 is pulled outward from the carriage 40 by the stud until it separates from the tapered surface 49 of the carriage 40, thereby allowing the plunger 60 to open the jaw 50 with its urging force and remove the stud from the stud driver, In this way, the operation of inserting the stud into the workpiece is completed.

If necessary, the carriage may be configured to reciprocate within the barrel. For example, when attaching a trip gauge to the collet 81 and attempting to implant a stud to the correct height, it is effective to move the carriage within the barrel. In this case, it is also desirable to cause the carriage 40 to reciprocate relative to the driven head 30.
When the carriage is moved in this manner, a cam step may be provided as described above, but as already mentioned, such a cam is not necessary. Such movement can be provided by lengthening the body 10 and lowering the carriage step relative to the head step.

〔Effect of the invention〕

In the automatic stud implantation device of the present invention, the locking protrusion 43 on the inner surface of the carriage 40 and the locking tongue 57 on the surface of the jaw 50 are enabled to engage with each other, so when the jaw is in the open position. However, it can prevent Jiyo from falling out of the carriage. Therefore, when assembling the present stud implantation device, the jaw assembly is inserted into the bottom of the carriage, the presser balls and locking balls are fitted into the holes 45 and 47 in the carriage wall, and then the carriage is inserted into the body 10. During assembly, the implant device can be easily assembled because the jaws do not fall out of the carriage. In addition, scale-shaped holding grooves 56 and locking grooves 58 are formed in the jaw 50, and the holding balls 44 and locking balls 46 are held within the carriage wall, so that the stud implantation device can be inserted into the body wall like a conventional stud implantation device. There is no need to provide an annular groove or a cam step to receive the ball, and the implant device can be made structurally stronger. Furthermore, since the carriage 40 is not reciprocated within the body 10, the distance that the robot moves within the carriage is shortened, and the apparatus can be made smaller. Therefore, the present automatic stud implantation device and the implantation tool equipped with the same can be easily assembled, the device is easy to manufacture, and it can be used freely even in a narrow place such as an automatic assembly line.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the stud implantation device, Fig. 2 is a partial longitudinal section taken along the line A--A in Fig. 1, showing the plunger member and the top of the carriage without being cut away;
The figure is an exploded view of the stud implantation device, Figure 4 is a cross-sectional view of half of the torso, taken along line C-C in Figure 3, and Figure 5 is a view taken along line B-B in Figure 2. It is. DESCRIPTION OF SYMBOLS 10...Body part, 20...Collar, 40...Carriage, 43...Latching protrusion, 44...Press ball, 45...Press ball hole, 46...Latching ball, 47...Latching Ball hole, 50... Jiyo, 5
6... Presser groove, 57... Locking tongue piece, 58... Locking groove, 60... Plunger.

Claims (1)

[Scope of Claims] 1. An automatic stud implantation device includes: a body 10; a rotatably driven carriage 40 having a peripheral wall within the body 10 and having a cavity formed along its long axis; at least one presser ball 44 held in the circumferential wall of the carriage 40 and protruding from the inner surface of the circumferential wall; and at least one locking ball 44 held in the circumferential wall of the carriage 40 and protruding from the inner surface of the circumferential wall. A ball 46, a presser ball hole 45 and a locking ball hole 47 for holding the presser ball 44 and the locking ball 46, respectively, in the peripheral wall, and a stud assembled in a substantially cylindrical shape in the cavity. A pair of opposing jaws 5 to grip
0 is provided, and the carriage 50 is connected to the carriage 40.
The pivot shaft 65 of the plunger 60 enters and partially retreats into the interior of the plunger by reciprocating motion, the reciprocating motion is limited by the presser ball 44 and the locking ball 46, and the jyo 50 is supported by the jyo. a jaw 50, provided with gripping means 54 movable around the jaw between an open position and a closed position, for gripping the stud in a non-rotational manner when the jaw 50 is in the closed position, and for loosening the stud when the jaw 50 is in the open position. In the locking device, a holding groove 56 formed to cooperate with the holding ball 44 and a locking groove 58 formed to cooperate with the locking ball 46 are provided on each surface of the jaw 50, and the locking groove 58 is formed to cooperate with the locking ball 46. A locking protrusion 43 extending from the inner surface of the peripheral wall near the bottom edge of the carriage 40 and a locking tongue 57 provided on the surface of the jog 50 to cooperate with the locking protrusion 43 extend from the inner surface of the peripheral wall. An engaging portion between the locking protrusion 43 and the locking tongue 57 is provided between the gripping means 54 and the pivot shaft 65, and when the jaw 50 is in the open position, the jaw falls off from the carriage 40. In order to prevent this, the locking protrusion 43 and the locking tongue 57 have surfaces 43 and 57 that are selectively engaged, and the combined surfaces contact to prevent the jaw 50 from falling off. ,
said engaged surface 43 when in the closed position;
and 57 do not engage, and the carriage 40
An automatic stud implantation device characterized in that it is configured to be moved axially relative to each other. 2. The holding groove 56 has a relatively narrow and shallow upper end and a relatively wide and deep lower end and extends in the longitudinal direction, and the locking groove 58 has a relatively wide and deep upper end and a relatively wide and deep upper end. When the jaw 50 is closed, the presser ball 44 is located at the wide end of the presser groove 56, and the locking ball 46 is locked. The holding ball 44 is located at the narrow end of the groove 58, and when the jaw 50 is open, the holding ball 44 is located at the narrow end of the holding groove 56, and the locking ball 4
6. Automatic stud implantation device according to claim 1, characterized in that the locking groove 6 is located in the wide end of the locking groove 58. 3. The first aspect of claim 1, wherein the holding groove 56 and the locking groove 58 are scale-shaped.
The automatic stud implantation device according to item 1 or 2. 4 two diametrically opposed retainer balls 44 are retained in the peripheral wall, two diametrically opposed locking balls 46 are retained in the peripheral wall, two longitudinally extending retainer grooves; 56 is disposed on the face of the jyo assembly, two longitudinally extending locking grooves 58 are disposed on the face of the jyo assembly, and the holding groove 56 and the locking groove 58 are substantially the same. The stud implantation device according to any one of claims 1 to 3, wherein the length of the groove is determined by the length of the reciprocating movement of the jaw. 5. The automatic stud implantation tool comprises: a body 10; a rotatably driven carriage 40 having a circumferential wall in the body 10 and having a cavity formed along its longitudinal axis; at least one holding ball 44 held in a peripheral wall and protruding from the inner surface of the peripheral wall; at least one locking ball 46 held in the peripheral wall of the carriage 40 and protruding from the inner surface of the peripheral wall; and the holding ball 44 and the locking ball 46, respectively, in the circumferential wall; and a pair of opposing jaws gripping a stud assembled in a substantially cylindrical shape in the cavity. 5
0 is provided, and the carriage 50 is connected to the carriage 40.
The pivot shaft 65 of the plunger 60 enters and partially retreats into the interior of the plunger by reciprocating motion, the reciprocating motion is limited by the presser ball 44 and the locking ball 46, and the jyo 50 is supported by the jyo. a jaw 50, provided with gripping means 54 movable around the jaw between an open position and a closed position, for gripping the stud in a non-rotational manner when the jaw 50 is in the closed position, and for loosening the stud when the jaw 50 is in the open position. In the locking device, a holding groove 56 formed to cooperate with the holding ball 44 and a locking groove 58 formed to cooperate with the locking ball 46 are provided on each surface of the jaw 50, and the locking groove 58 is formed to cooperate with the locking ball 46. A locking protrusion 43 extending from the inner surface of the peripheral wall near the bottom edge of the carriage 40 and a locking tongue 57 provided on the surface of the jog 50 to cooperate with the locking protrusion 43 extend from the inner surface of the peripheral wall. An engaging portion between the locking protrusion 43 and the locking tongue 57 is provided between the gripping means 54 and the pivot shaft 65, and when the jaw 50 is in the open position, the jaw falls off from the carriage 40. In order to prevent this, the locking protrusion 43 and the locking tongue 57 have surfaces 43 and 57 that are selectively engaged, and the combined surfaces contact to prevent the jaw 50 from falling off. ,
said engaged surface 43 when in the closed position;
and 57 do not engage, and the carriage 40
is formed to be moved axially relative to each other, and is configured to rotate the carriage 40, thereby rotating the jaw 50, thereby causing the stud to be screwed into the workpiece. An automatic stud implantation device tool characterized by: 6. The gripping means 54 is provided on the inner surface of the jaw at the axial end of the jaw 50 separated from the carriage 40, and the locking tongue 57 on the selective mating surface of the jaw is substantially connected to the gripping means. are formed on the outer surface of the jaw at the same axial level as the gripping means, and a locking projection 43 on a selective combination surface of the inner surface of the cavity of the carriage 40 is formed at substantially the same axial level as the gripping means. An automatic stud implanter tool according to claim 5, characterized in that: 7. The body 10 surrounds the carriage 40, the head shelf 12 formed in the upper part of the body and the carriage 40 are rotatable with respect to each other, and the carriage and the body are prevented from moving relative to each other in the axial direction. The automatic stud implantation tool according to claim 5, characterized in that it is configured as follows.