JPH11255428A - Confirmation device for mounting bobbin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a confirmation device for mounting bobbin which saves limit switches to one for each bobbin. SOLUTION: This confirmation device is provided with a fitting cylinder 4 which is formed into an approximately hollow columnar shape and holds one of pintles 3A for pinching a bobbin 1 in its hollow part, a hollow columnar fitting collar 21 which is fixed to a frame 2 and in which the fitting cylinder 4 is screwed, a pin hole 21A which is bored in the middle part in the axial direction of the fitting collar 21, a tightening screw part 41 which is engraved in the outer circumferential part of the fitting cylinder 4, a lock part 42 which is continuously engraved in the circumferential direction in the middle part in its axial direction, a lock pin which is pressurized at all times so as to project toward the inside of the collar 21 through the pin hole 21A, and a limit switch which is provided in such a position as exciting, when the lock pin is released inversely to its pressurized direction. The lock part 42 and the pin hole 21A are so constituted that their axial positions are coincided with each other, when the fitting cylinder 4 is so screwed that the pintle 3A is positioned in a regular bobbin fitting position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin mounting confirmation device, and more particularly, to a bobbin mounting confirmation device which is simplified so that only one limit switch is used for confirmation.

[0002]

2. Description of the Related Art A conventional bobbin mounting confirmation device will be described with reference to FIG. The bobbin 1 is the handle 1 from the outside of both flange plates.
It is attached to a predetermined position by a pair of pintles 3A and 3B approaching each other by the rotation of the feed screw shaft 101 rotated at 02.

After the bobbin 1 is mounted at a predetermined mounting position shown by a solid line in FIG. 1, a holding lever 104 is hung from the outside of one of the pintles 3A in order to prevent the bobbin 1 from coming off. In the middle of the feed screw shaft 101, a locking collar 10 is provided.
3 is fixed, and a locking pin 105 is inserted into an appropriate recess formed in the hole 3 so that the rotation of the feed screw shaft 101 is locked.

[0004] The limit switch 106 is provided so as to be excited when the holding lever 104 rotates in the direction in which the pintle 3A comes out, and the limit switch 107 is provided so as to be excited when the locking pin 105 comes out.

That is, since the limit switch 106 is not excited, it is recognized that the bobbin 1 is securely mounted at a predetermined mounting position, and since the limit switch 107 is not excited, the bobbin 1 It is known that rotation is reliably stopped.

In other words, the two limit switches are such that one is that the bobbin 1 is now properly mounted at a predetermined mounting position, and the other is that there is no possibility that the pintle will move and come off in the future. We guarantee it.

[0007]

However, a single bobbin requires a total of two limit switches for confirming the correct attachment of the bobbin to its proper position and for confirming the removal of the bobbin. When the number of switches is large, it is necessary to attach a very large number of limit switches, and there is a disadvantage that the number of assembling steps increases and the cost becomes extremely high.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a solution according to the first aspect of the present invention generally has a hollow cylindrical shape, and a bobbin is provided in the hollow portion. A mounting cylinder holding one of the pintles to be clamped, a hollow cylindrical mounting collar fixed to the frame and screwing the mounting cylinder, and a pin hole formed in the middle of the mounting collar in the axial direction. A tightening screw portion engraved on the outer peripheral portion of the mounting cylinder and a locking portion engraved continuously in the circumferential direction at a midpoint in the axial direction of the mounting screw portion; A locking pin that is constantly pressed so as to protrude inward, and a limit switch provided at a position to be excited when the locking pin is pulled out in a direction opposite to the pressing direction, wherein the pintle is a regular bobbin. Mounting When screwed to the mounting cylinder to come to location, a confirmation apparatus of a bobbin mounted axial position is characterized in that it is configured to match with the pin holes and the locking portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. Reference numeral 2 denotes, for example, a frame at a bobbin mounting position of the planetary type collecting machine. A hollow cylindrical mounting collar 2 coaxial with the axis of the mounting bobbin 1 of the frame 2
1 is fixed.

An internal thread is cut into the inner periphery of the mounting collar 21, and a pin hole 21A is formed in the middle in the axial direction. Thus, the locking end 51 of the locking pin 5 is inserted into the pin hole 21.
A, and is constantly pressed by the pressing spring 52 so as to protrude inside the collar.

A hitting protrusion 53 is attached to the locking pin 5 so as to protrude in the lateral direction, and a limit switch 6 is disposed at a position to be excited when the locking pin 5 moves in the right direction in the drawing, that is, in the direction to come out. Is established.

A hollow cylindrical mounting cylinder 4 is mounted on the inner periphery of the mounting collar 21 by screwing.
The mounting tube 4 rotatably holds the pintle 3A in the inner hollow portion, and as shown more clearly in FIG. Is provided with a locking portion 42 extending over the entire circumference.

As shown more clearly in FIG. 2, the locking portion 42 is formed by excavating the screw portion 41 with a taper end mill and an index.
A is formed, and the trough is a locking trough 42B.

Here, it should be noted that when the bobbin 1 is mounted at a regular position and the pintle 3A is pushed into the regular position, that is, the mounting cylinder 4 is moved to that position.
Is screwed in, the axial positions of the locking portion 42 of the mounting cylinder 4 and the pin hole 21A of the mounting collar 21 match.

If they match, the locking pin 5 naturally protrudes inward through the pin hole 21A by the spring force of the pressing spring 52,
The process proceeds until the locking end 51 is inserted and engaged with the locking valley portion 42B of the locking portion 42. In this manner, the locking pin 5 is engaged with the locking portion 42 to reliably lock the rotation of the mounting cylinder 4 and to prevent the mounting tube 4 from coming off in the axial direction.

That is, when the limit switch 6 is in the non-excited state, it is assured that the pintle 3A has been pushed together with the mounting cylinder 4 to the proper bobbin mounting position, and at the same time, it cannot be released. That is guaranteed.

[0017]

According to the present invention, by using only one limit switch for each bobbin, it is possible to simultaneously confirm the installation of the bobbin at a regular position and prevent the bobbin from coming out, and it is possible to achieve the same effect as in a planetary collective machine. In the case of a machine having a large number of bobbins, there is an advantage that the number of assembling steps and the cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state of a locking portion.

FIG. 3 is a schematic side sectional view illustrating a conventional bobbin mounting confirmation device.

[Explanation of symbols]

 Reference Signs List 1 bobbin 2 frame 21 mounting collar 21A pin hole 3A, 3B pintle 4 mounting cylinder 41 tightening screw part 42 locking part 42A locking protrusion 42B locking valley part 5 locking pin 51 locking end 52 pressing spring 53 hitting arm 6 Limit switch 101 Feed screw shaft 103 Locking collar 104 Press lever 106, 107 Limit switch

Claims (1)

[Claims] 1. A mounting cylinder (4) holding a pintle (3A) for holding a bobbin (1) in a hollow portion thereof, and is fixed to a frame (2).
A hollow cylindrical mounting collar (21) into which the mounting cylinder (4) is to be screwed, a pin hole (21A) formed in the middle of the mounting collar (21) in the axial direction, and a mounting cylinder (4). Through the tightening screw portion (41) engraved on the outer peripheral portion and the engaging portion (42) engraved continuously in the circumferential direction in the middle of the axial direction, and through the pin hole (21A) A locking pin (5) which is constantly pressed so as to protrude toward the inside of the mounting collar (21), and is provided at a position which is excited when the locking pin (5) comes out in a direction opposite to the pressing direction. When the mounting cylinder (4) is screwed so that the pintle (3A) comes to a regular bobbin mounting position, the locking portion (4) is provided.
2) The bobbin mounting check device, wherein the axial position of the pin hole (21A) matches the axial position of the pin hole (21A).