JPS6119543B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rappet used as a thread guide in a machine that handles a large number of yarns, such as a ring spinning machine or a twisting machine, and which is attached to a snail wire attached to the rappet or integrated with the wire. A piezoelectric element is attached to a part configured to detect thread breakage, and a piezoelectric element is attached to the wire to detect the vibration frequency caused by thread friction generated on the wire to detect the presence or absence of a thread. The structure is such that the signal of the piezoelectric element can be efficiently derived and these connecting devices can be easily assembled.

The applicant has proposed a thread breakage detection method. This method focuses on the fact that when a guide member that comes into contact with the thread passing section is appropriately provided, the guide member rubs against the thread and generates a natural vibration, and the natural vibration is detected and the thread passes through the thread. This is to detect the presence or absence of. In addition, such yarn breakage detection is extremely effective when applied to yarn guide members installed in ring spinning machines, such as snail wires, anti-node rings, and especially to rappet snail wires. This is what operations managers desire most. Based on these, the present applicant has made various proposals for attaching the piezoelectric elements described above to the snail wires of the rappets provided in a ring spinning machine, and has also made various proposals regarding the rappets to which these elements are attached.

By the way, it is difficult in terms of equipment and investment to install a transmission detection device on each rappet to detect such vibration signals, and it is desirable to detect them centrally and notify them. . However, many rappets installed in ring spinning machines and ring twisting machines are arranged in a row and move up and down. Furthermore, cotton dust tends to accumulate around the rappet attachment area, so various blowing or wiping devices are installed. Therefore, there is a need for a rappet mounting device that does not allow connection terminals or connection cords to protrude from the area around the pet attachment, allows for convenient wiring as described above, and allows for easy assembly.

The present invention has been made based on the above, and in particular, uses a printed wiring board and configures it with a divided wiring board of approximately the same shape for multiple spindles of 4 to 8 spindles,
These are connected to each other by a connecting plate.

The present invention will be described in detail below based on the drawings, but the drawings show one example of a specific implementation of the present invention, and the present invention is not limited to these illustrated examples, but is consistent with the spirit of the above and later descriptions. Even if the shape or design is changed, the same effect can be achieved. Furthermore, the embodiments described in the claims do not limit the present invention. Fig. 1 is a side sectional view of the device of the present invention applied to a yarn breakage detection lappet of a ring spinning machine, Fig. 2 is an enlarged side sectional view of the main part of Fig. 1, and Fig. 3 is a side sectional view of the rappet of Fig. 2. FIG. 4 is a partially cutaway bottom view showing only the top part from below, FIG. 4 is a developed sketch showing the assembly configuration schematically showing the installation of the printed wiring board, insulating board, and lappet, and FIG. 5 is a top plan view of FIG. 2. A part is shown broken in the figure. 6th
The diagram shows cutting lines -A and - in Figure 2.
7 is a back view of the connection plate shown in FIG. 6B, FIG. 8 is a left side view of FIG. 7, FIG. 9 is a bottom view of FIG. 7, FIG. 10 is a sketch of the contactor, and FIG. 11 shows another embodiment of the present invention.

In these figures, the thread breakage detection rappet 3
holds a snail wire 2 that actively contacts and rubs against the yarn Y spun from the front rollers 1 and 1' of a ring spinning machine, and the snail wire 2 is made of a cushioning elastic material. Supported by 11,
A piezoelectric element mounting portion 12 is formed in the direction toward one end thereof. Terminal wires 14, 14' are taken out from the piezoelectric element (not shown) attached to the mounting part 12, and the terminal wires 14, 14' are made of a steel wire with good conductivity, and are connected to the lappet hinge part. Install the lappet bracket 1 so that it is insulated and not affected by the rotation of the hinge.
Provided protruding from the rear of 3.

On the other hand, directly below the thread guide portion of the snare wire 2 is a bobbin 8 fitted into a spindle (not shown), through which a ring 5 and an antinode ring 9 are concentrically disposed. and ring 5
is held by the rail 4 and raised and lowered while the spun yarn Y is wound around the bobbin 8 via the trapper 6 to form the package 7. Furthermore, anti-node ring 9
The rappet 3 also moves up and down in forming the package 7. The above-mentioned rappets 3 are attached to the rappet bar 10, but when attaching them, it is important to note that each rappet can be replaced and the attachment position can be adjusted, and that the lead terminal wires 14, 14' can be connected and wired easily as described above. It is to be configured so that
That is, it is preferable in terms of space to arrange a wiring board 15, which is an insulating board made of a resin material with printed wiring, on the lappet bar 10. When arranging the wiring board, it is advantageous that the back side of the wiring board 15 can be made of only an insulator and come into contact with the lappet bar 10, and a suitable attachment and engagement portion can be formed. In addition, by forming an engagement hole in the non-wiring part of the wiring board 15 and engaging the protrusion formed on the rappet bar 10, or by forming a mounting groove in the mounting surface of the rappet bar 10, the installation and retention can be ensured. It can be configured to restrict the mounting side and direction of the plate 15. Further, the wiring board 15 is formed by dividing it into lengths for 4 to 8 spindles (FIG. 4 shows a 6-spindle type), and connecting terminal portions 19 are provided at both ends of the wiring surface side (front side). Form. A contact surface 18 is formed on the front side of the wiring board 15, on which the terminals 14, 14' protruding from the mounting rappet 3 come into contact.
These terminal portions 19, contact surfaces 18, wiring connecting these, and the like are formed in substantially the same shape on each wiring board 15, thereby making the wiring boards compatible.

Reference numeral 16 denotes an insulating plate made of an insulating material, which is preferably formed so as to cover the front side of the wiring board 15, and which constitutes the mounting surface of the lappet 3 when disposed. The rappet 3 is installed by inserting bolts through holes (not shown) formed in the rappet bracket 13, through holes 23 formed in the insulating plate 16, holes 21 in the wiring board 15, and holes 10' formed in the rappet bar 10. Pass it through and attach it with a nut. Similarly to the wiring board 15, the insulating plate 16 is also formed by dividing it into lengths for 4 to 8 spindles (the figure shows 6 spindles) to ensure compatibility.
The wiring board 15 is formed with a length excluding the connecting terminal portions 19 formed on both ends of the front side of the wiring board 15. That is, the wiring board 15
The insulating plate 16 provided on the front side of the wiring board 15 is attached so as to form a gap except for the adjacent connecting terminal part 19, and a connecting plate 17 is provided in the gap to fill the gap. . The connection plate 17 is provided with contacts 27 for connecting the connecting terminal portions 19 formed on the wiring board 15 to each other. Further, the connection plate 17 is attached and held by being pressed and held by rappets 3, 3 attached on both sides thereof (FIG. 5). In order to regulate the holding of these positions, a hooking hole 20 is formed inside the connecting terminal portion 19 of the wiring board 15, and the protrusions 26, 26 formed on the connecting board 17 are connected to the adjacent wiring board 1, respectively.
It is recommended that it be constructed so as to engage with the engagement holes 20, 20 of No.5. That is, the back side of the connecting plate 17 (the opposite side to the rabbet mounting side) has a vertical groove 24 formed therein as shown in FIG. Horizontal grooves 25 are formed. In each groove 25, a contact 27 is inserted.
are arranged, and the protrusions 26, 26 are formed in a part of the central row of peaks formed by the grooves 25. Also, contact 2
7 is formed by punching out an elastic metal plate and bending it into a corrugated shape so that the bent crest protrudes from the groove 25, and the plate portion 27' is inserted into the vertical groove 24. Place it in the Note that an adhesive may be used in conjunction with the arrangement of the contactor 27 in the groove of the connection plate 17.

Further, in the upper part of the through hole 23 of the insulating plate 16,
Terminal holes 22 are formed to match the contact surfaces 18, 18 provided on the wiring board 15, and when the rappet 3 is installed, the protruding terminal wires 14, 14' are installed so as to pass through the terminal holes 22, and the terminals are line 1
4 are each connected to a contact surface 18.

Although these embodiments have shown wiring boards 15 disposed on the rappet mounting surface side of the rappet mounting bar 10, the present invention provides wiring boards 15 and insulating plates 16 configured as described above to be mounted on the rappet mounting surface. A similar effect can be obtained even if it is provided on the back side of the mounting bar 10. That is, FIG. 11 is a schematic diagram illustrating an example of the structure, in which a through hole 22' for the contact terminal 14 is formed in the rappet mounting bar 10, and the wiring board 15 is attached to the rappet mounting bar 10 with an insulating plate 16 in between.
Attach it to the back of the In the arrangement, the through hole 22' and the terminal hole 22 of the insulating plate 16 are aligned with each other, and the contact surface 18 of the wiring board 15 is aligned with the through hole 22'. The connecting plate 17 is constructed in the same manner, and when installing it, the rappet mounting bar 1
0 and the wiring board 15, and there is no need to hold it between adjacent lappets as in the previous example.

In the embodiment, the wiring board 15 and the insulating board 16 are constructed separately and assembled, but it is also possible to form them integrally so that only the contact surface 18 of the terminal 14 is exposed. These wiring members may be arranged in the vicinity of the lappet 3, so that the connection terminals taken out from the lappet are in contact with each other, and these are made up of a plurality of divided plates with a plurality of weights so that they are connected to each other. The present invention can be satisfied as long as the structure is configured as follows.

Since the rappet mounting device for yarn breakage detection of the present invention is constructed in this way, it is possible to take out and manage the signals of the piezoelectric elements without changing the form of the conventional ring spinning machine. In addition, when replacing the rappet, there is no need for any wiring or connection, making it extremely simple.Furthermore, assembly and maintenance are easy, and the rappet can be used for a long period of time.

[Brief explanation of the drawing]

Figure 1 is a side cross-sectional view explaining the installation of the thread breakage detection rappet, Figure 2 is a partially enlarged view of Figure 1, and Figure 3 is the
A partially cutaway view showing the lower side of the figure, Figure 4 is a schematic exploded view showing the mounting of the wiring board, insulating plate and lappet, Figure 5 is a top plan view of Figure 2, and Figure 6 is A sectional view showing cutting lines -A and -B in Fig. 2 in the direction of the arrows, Fig. 7 is a plan view of the contact side of the connecting plate, Fig. 8 is the left side of Fig. 7, and Fig. 9 is the view shown in Fig. 7. FIG. 10 is a sketch of the contactor, and FIG. 11 is a sketch of the structure of another embodiment. 1... Front roller, 2... Snail wire, 3... Labet, 10... Labet bar, 1
DESCRIPTION OF SYMBOLS 1...Elastic material, 12...Piezoelectric element mounting part, 13...
...Rapet bracket, 14...Terminal wire, 15...
... Wiring board, 16 ... Insulating board, 17 ... Connection board, 1
8...Contact surface, 19...Connection terminal part, 20...
Engagement hole, 21...Mounting hole, 22...Terminal hole, 23
...Through hole, 24...Vertical groove, 25...Horizontal groove, 26
... protrusion, 27 ... contact.

Claims (1)

[Scope of Claims] 1. A rappet mounting device in which a piezoelectric element is attached to a member integrally formed with a snail wire and a detection signal of the piezoelectric element is extracted, the rappet mounting bar having an insulating material printed on it. A wired wiring board is provided, and the terminals taken out from the rappets are connected to the connection surface provided on the wiring board.The wiring board is each composed of a divided board consisting of a specific plurality of spindles, and the terminals taken out from the rappets are connected to the connection surface provided on the wiring board. 1. A device for attaching a lappet for thread breakage detection, characterized in that connection terminal portions are formed in a connectable array, and the terminal portions are configured to be connected to each other. 2. The device for attaching a rappet for thread breakage detection according to claim 1, wherein the connecting plates for connecting the terminals formed at both ends of the wiring board are formed of a part of an insulating plate. 3. In claim 1 or 2, the connection plate that connects the terminals formed at both ends of the wiring board is configured so that it is held in pressure contact with rappets or mounting plates attached on both sides of the connection plate. A mounting device for a lappet for thread breakage detection.