JPH0533495Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a bobbin gripping tool, and more specifically, to a bobbin gripping tool in which a bobbin head presser member is arranged above the bobbin insertion hole of the bobbin gripping tool body. It is something.

BACKGROUND TECHNOLOGY The bobbin gripping tool as described above is, for example,
-Disclosed in No. 7649. According to this document, for example, the bobbin head inserted into the bobbin insertion hole of the bobbin gripping tool body is gripped from the outside by a gripping member operated by fluid pressure using a mechanism as disclosed in Japanese Utility Model Publication No. 53-12825. A fixed head presser member that abuts against the inserted bobbin head is positioned above the insertion hole within a range that does not exceed the axis of the insertion hole. If the bobbin gripping tool with this configuration is attached to the bobbin dotting bar of the tube changing device, when doffing or donning the bobbin of a spinning machine or a twisting machine, the bobbin can be held between the bobbin and the spindle, or between the bobbin and the pegs of the bobbin and peg transport conveyor. Even if the bobbin is lifted up due to insufficient installation, the bobbin head collides with the fixed head presser to correct the lifting of the bobbin, and the tapered bobbin will be lifted up. This prevents the bobbin from fitting too tightly into the insertion hole, and allows the bobbin to be reliably removed from the bobbin holder when the bobbin is opened.

Problems to be Solved by the Invention However, according to the above-mentioned conventional technology, the empty bobbin does not reach the base of the spindle due to fluff adhering to the base of the spindle after removing the full bobbin, or due to a defect in the empty bobbin itself. If the bobbin cannot be inserted, the head of the empty bobbin may exert excessive force on the head holder because there is a fixed head holder, damaging the head holder or, in severe cases, damaging the spindle or bobbin. There was a problem.

Means for Solving the Problems The present invention aims to solve the above-mentioned problems, and provides a bobbin gripping tool in which a bobbin head holding member is arranged above the bobbin insertion hole of the gripping tool main body. The head holding member is divided into separate parts, a mounting base is formed on one side of the gripping tool body and the bobbin head holding member, and a mounting part that is detachable from above and below is formed on the mounting base on the other side, and these parts are attached. The present invention is characterized in that a vertical locking means is provided between the base portion and the mounting portion, which elastically engages and disengages when a vertical load of a predetermined value or more is applied to the bobbin head holding member.

According to the above structure, during normal dotting and donning, the bobbin head and the bobbin head holding member collide with each other and the bobbin head is prevented from tightly fitting into the bobbin gripping part, as in the conventional case, and when the bobbin is opened. It can be opened reliably, but if the bobbin cannot be returned to its normal state due to winding of fluff around the base of the spindle and excessive force is applied to the bobbin head presser,
The vertical locking means is elastically disengaged and the bobbin head holding member is separated from the gripping tool body, thereby preventing damage to the bobbin head holding member and eliminating damage to the spindle, bobbin, etc.

Embodiment In FIGS. 1 to 3, reference numeral 1 denotes a bobbin gripping tool fixed to a dotting bar 3 of a pipe switching device.
The bobbin head holding member 11 is provided separately from the gripper main body 9, and a bobbin head presser member 11 is provided separately from the gripper main body 9. The gripper main body 9 has a base portion of the tip protrusion 5 formed on a mounting base 13 on a round shaft, and a locking hole 1 on the outer peripheral surface of the gripper body 9 on a horizontal diameter axis.
3a are formed in pairs on the left and right. On the other hand, the bobbin head holding member 11 has its base formed in an arch-shaped mounting part 15 that is open at the bottom so that it can be attached to and detached from the outer peripheral surface of the mounting base 13 from above and below. A bobbin head presser portion 15a is provided protruding forward, and this bobbin head presser portion 15a
is provided with a presser protrusion 15b extending from the U-shaped tip toward the mounting portion 15. The mounting part 15
A locking protrusion 15c that locks with the locking hole 13a when the mounting portion 15 is attached to the mounting base 13 is protruded inward from the inner circumferential surface of the holder. As shown in FIG. 5, the locking protrusion 15c is formed in a trapezoidal shape with an inclined upper portion and continuous with the inner surface of the mounting portion 15. This bobbin head holding member 1 including the mounting part 15
1 is molded using an elastic material such as ABS resin or hard rubber, and is a mounting base 1 of the gripping tool main body 9.
3, when attaching the attachment part 15 of the bobbin head presser member 11 to the attachment base 13, push the attachment part 15 downward against the attachment base 13 with a predetermined load or more.
5c is the mounting portion 15 along the outer peripheral surface of the mounting base 13.
is elastically pushed apart to the left and right to be locked in the rear locking hole 13a. In addition, a load greater than a predetermined value is applied to the bobbin head presser portion 15a from below to above (this magnitude occurs, for example, when the spindle of a spinning machine is floating and the bobbin cannot be pushed all the way to the base of the spindle). When a load (for example, about 5 to 8 kg) is applied, the locking protrusion 15c engages with the edge of the locking hole 13a, and the mounting portion 15 is spread horizontally so that the locking protrusion 15c and the locking hole 13a are disengaged. These locking protrusions 15c and locking holes 13a formed on the elastic mounting portion 15 provide vertical locking means for positioning the bobbin head holding member 11 in the front and rear directions. It is configured. The bobbin insertion hole 7 of the gripper main body 9 may be operated by fluid pressure as disclosed in Japanese Utility Model Publication No. 53-12825, or by a lever mechanism as disclosed in Japanese Utility Model Publication No. 57-185784. A movable gripping member 17 appears and retracts to grip and release the bobbin head H.

According to the above configuration, when the bobbin gripping tool 1 is properly inserted into the spindle etc., the bobbin gripping tool 1 descends, the bobbin head H passes through the bobbin insertion hole 7, and the gripping member 1
7, the bobbin B is easily released from the bobbin grip 1 by moving the bobbin grip 1 to the bobbin release position in this state and retracting the grip member 17.

Next, for some reason, bobbin B has not penetrated all the way to the base of the spindle, etc., and is floating as shown in Figure 1. Moreover, if you try to push bobbin B, it will be able to penetrate all the way to the base of the spindle. In such a case, when the bobbin gripper 1 is lowered, the bobbin head H comes into contact with the pressing protrusion 15b of the bobbin head pressing member 15a, and the bobbin B is pushed to the base of the spindle. This prevents the bobbin B from tightly fitting into the bobbin insertion hole 7.

Next, if the bobbin B is still floating due to fluff, etc. attached to the bottom of the spindle, but you cannot push it all the way to the base of the spindle even if you try to push it in, then tighten the bobbin grip. When the tool 1 descends relative to the bobbin B, the bobbin head H comes into contact with the bobbin head holding part 15a as described above, but because it cannot be pushed in by the bobbin B for the above-mentioned reason, an excessive load is applied to the bobbin head holding member 11 from below. The result is that Then, locking hole 1
The locking protrusion 15c is disengaged from the locking protrusion 15c, and the mounting portion 15 is pushed open to the left and right, and the bobbin head presser member 11 is removed upward. Therefore, the entire bobbin gripping tool 1 will not be damaged, or an excessive load will not be applied to the bobbin or spindle, thereby preventing them from being damaged. To reattach the bobbin head presser 11 that has come off in this way to the gripper main body 9, the bobbin head presser 11 can be manually pushed into the mounting base 13 of the gripper main body 9 without using any tools or the like. It can be easily restored by operating the .

Furthermore, in order to attach such a bobbin gripper 1 to the dotting bar 3, it is necessary to center the spindle of the spinning machine, but according to the present invention, the bobbin head presser member 1 is removed from the gripper main body 9 in advance. When placed, the bobbin insertion hole 7 of the gripper body 9
Since the head of the spindle (or the bobbin attached to the spindle) can be seen from above, centering work becomes extremely easy.

In this embodiment, the locking means in the vertical direction is constituted by the locking holes and the locking projections.
The locking projection may be omitted, and instead, as shown in FIG. 6, the mounting portion 15 made of an elastic material may be C-shaped so as to elastically fit down to the bottom of the mounting base, with the tip of this C-shaped portion and the bottom part of the mounting base constituting the vertical locking means.

Other Embodiments In FIGS. 7 and 8, the mounting portions are left and right holding pieces 15 that protrude upward from the rectangular base of the gripper main body 9.
A, this holding piece 15A is made of an elastic material. A vertical locking pawl 15c is provided at the tip of this holding piece so as to face each other. On the other hand, the bobbin head holding member 11 has its base formed as a mounting base 13 that fits between the holding pieces 15A, and its upper surface is a locking portion 13A that locks with the vertical locking pawl 15Ac. The vertical locking claw 15Ac and the locking portion 13A constitute a vertical locking means.
The bobbin head holding member 11 is provided with a pin 19 that engages with the locking hole 5a at the base of the distal end protrusion 5 of the gripper main body 9 and positions the bobbin head holding member 11 in the front-rear direction.

In the above two embodiments, locking balls biased outward by springs are arranged on the left and right sides of the mounting base,
The mounting part has a locking hole that locks and disconnects from this locking ball,
A means for vertically locking the bobbin head pressing member may be configured. In addition, the shape of the bobbin head pressing member is
It may be made into a spiral shape as shown in the figure, and by doing so, the springiness of the bobbin head holding portion is improved.

Effects of the invention As described above, in the present invention, the gripper main body and the bobbin head presser member are divided into separate parts, and one of the gripper main body and the bobbin head presser member is provided with a mounting base, and the other is provided with the upper and lower parts of the mounting base. The bobbin head holding member is provided with a vertical locking means that elastically engages and disengages when a predetermined or higher vertical load is applied to the mounting base and the bobbin head holding member. Therefore, even if the bobbin is not properly installed between the bobbin and the spindle or between the bobbin and the peg and the bobbin is lifted up, the bobbin head will collide with the bobbin head holding member and the bobbin will not be lifted up. The bobbin can be corrected to prevent the bobbin from fitting too tightly into the bobbin insertion hole, and the bobbin can be reliably removed from the bobbin holder when the bobbin is opened. Moreover, even if the bobbin and the bobbin insertion hole are prevented from tightly fitting together, for example, the empty bobbin may reach the base of the spindle due to fluff adhering to the base of the spindle or because the empty bobbin itself is defective. When you can't get into it,
When the head of the empty bobbin applies excessive force from below to the bobbin head holding member, the bobbin head holding member may come off from the gripper body, causing damage to the bobbin head holding member.
Damage to the spindle and bobbin can be prevented. Furthermore, if you remove the bobbin head holding member from the gripper body in advance, the head of the spindle (or the bobbin attached to the spindle) will be visible from above the bobbin insertion hole of the gripper body, so you can attach the bobbin gripper to the dotting bar. At the same time, centering work for the spindle of the spinning machine becomes extremely easy.

[Brief explanation of the drawing]

Figure 1 is a side view of the bobbin gripper, and Figure 2 is the side view of the bobbin gripper.
3 is a plan view of FIG. 1, FIG. 4 is a side view of the bobbin head holding member, FIG. 5 is a front view of FIG. 4, and FIG. 6 is a front view of another embodiment. , FIG. 7 is a front view of still another embodiment, FIG. 8 is a side view of FIG. 7, and FIG. 9 is another embodiment of the bobbin head holding member. 1... Bobbin gripper, 7... Bobbin insertion hole, 9
...Gripper body, 11...Bobbin head holding member, 1
3... Mounting base, 13a... Locking hole, 15... Mounting part, 15c... Locking protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. A bobbin gripping tool in which a bobbin head holding member is arranged above the bobbin insertion hole of the gripping tool body,
The gripping tool body and the bobbin head holding member are divided into separate parts, and one of the gripping tool body and the bobbin head holding member has a mounting base, and the other has a mounting portion that can be attached to and detached from the mounting base from above and below. The bobbin gripping tool is characterized in that a vertical locking means is provided between the mounting base and the mounting portion, and the vertical locking means is elastically engaged and disengaged by a predetermined vertical load or more applied to the bobbin head holding member. 2 A mounting portion is provided on the bobbin head holding member, and a mounting base is provided on the gripping tool body, and the mounting portion is formed into a substantially half-moon shape with an opening downward, and is made of an elastic material such as resin, and a locking member is provided on the inside of the mounting portion. A utility model according to claim 1, characterized in that a locking protrusion is provided protrudingly, and a locking hole for locking with the locking protrusion is formed in the mounting base to constitute a vertical locking means. Bobbin gripper. 3. A mounting portion is provided on the gripping tool body, and a mounting base is provided on the bobbin head holding member, and the mounting portions are formed as left and right holding pieces projecting upward from the gripping tool body, and the holding pieces are made of an elastic material, A vertical locking claw is provided opposite the tip of the holding piece, and the vertical locking means is configured as a locking portion that locks the upper surface of the mounting base of the bobbin head holding member with the vertical locking claw. A bobbin gripper according to claim 1 of the patented utility model.