JPS6348607Y2 - - Google Patents

Description

[Detailed description of the invention] This invention consists of a fixed lever and a movable lever, which are arranged symmetrically with curved parts of the thread presser formed almost at right angles to the thread passing direction, and with different sides of each other. The tensioner is equipped with a coil spring that presses the thread presser curved portion of the movable lever in the opposite direction on the side of the thread presser curved portion of the fixed lever, and the elasticity of the spring is determined by the thread thickness, the degree of tension application, etc. The purpose of this device is to improve the elasticity adjustment device that can be adjusted arbitrarily depending on the situation, and to improve the conventional thread tensioning device of this type, in which tension is applied to the thread only by the weight of the movable lever. It is.

An embodiment of the present invention will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a thread guide plate formed into a shape when viewed from above, and each of the protrusions 3, 3 on both sides has thin notches 5, 5 into which the thread is hooked from the front, as shown in Fig. 4. Synthetic resin thread guide 4 with different upper and lower parts,
4 is tightly fitted, and a straight passage R for the thread Y is formed between the thread guides 4, 4 on both sides thereof.

Reference numeral 10 denotes a number of fixed levers that are attached at a constant interval by welding to the front surface of the base 2 whose rear end is parallel to the thread passage R of the thread guide plate 1, and 13 is a pivot support on the base 2. A large number of movable levers that are loosely fitted onto a support shaft 9 passed through a piece 7 to enable vertical swinging,
Each movable lever is disposed between fixed levers 10, and a large number of grooves 8 are formed in the shaft support piece 7 to correspond to each movable lever.

Each fixed lever 10 is provided with a thread presser curved portion 11 having a lower groove H corresponding to the passage path R, and the movable lever 13 is provided with a thread presser curved portion 14 having an upper recess.
1, and sliding pieces 12 and 15 are fitted into the respective curved parts 11 and 14. Threading guides 16 and 17 that intersect in an X shape are provided at each tip of the fixed lever 10 and the movable lever 13.

The movable lever 13 has an arm 18 extending rearward from the support shaft 9 and an arc-shaped protruding piece 1 that protrudes downward.
At the lower end of the plate 20 attached to the rear surface of the base 2, there is provided an arcuate guide plate 21 extending rearward from below the protruding piece 19 with the support shaft 9 approximately at the center. A swing limiting plate 24 is attached to the front surface of the vertical plate 22 so that the arm 18 of the movable lever 13 comes into contact with it from below.

Further, shaft support pieces 27 are loosely fitted to both ends of the support shaft 9,
A swing receiving plate 26 is pivotally supported on the lower surface of the arm 18 so as to be substantially in contact with the front surface of the arcuate guide plate 21, and the protruding pieces 19 are passed through a number of through holes 27 provided therein. A coil spring 30 whose upper end is in contact with the arm 18 and whose lower end is in contact with the swing receiving plate 26 is fitted into each protruding piece 19 somewhat loosely. In addition, a threaded rod 28 is provided at the rear end of the swing receiving plate 26 and protrudes rearward by passing slightly through the elongated hole 25 formed in the arc guide plate 21. Screw the nut 29 together.

In this embodiment, when the tightening nut 29 is loosened and the swing receiving plate 26 is pushed down by the elasticity of each coil spring 30 and the screw rod 28 is in contact with the lower end edge of the elongated hole 25, each protruding piece 19 is transparent. The thread presser curved portion 14 of the movable lever 13 is positioned slightly below the thread presser curved portion of the fixed lever 10 due to the swing restriction plate 24. , movable lever 13 of coil spring 30
The spring elasticity acting on is minimized.

Tension is applied to the thread Y running in the passage R from the front notch 5 and the threading guides 16 and 17 on the upper surface of the thread guide 4, the thread presser curved section 11, and the lower surface of the thread presser curved section 14. be done.

When the tightening nut 29 is loosened, the threaded rod 28 is set at an appropriate height in the elongated hole 25, and the nut is tightened on the rear surface of the arc guide plate 21, the swing limiting plate 26 elastically compresses each coil spring 30 to adjust the position. The thread presser curved portion 14 of the movable lever 13 of each fixed coil spring 30 simultaneously adjusts the spring elasticity of the thread Y passing through the thread presser curved portion 11 of the fixed lever 10. Swing receiving plate 26 and support shaft 9
By swinging around the center and fixing it with a tightening nut 29, it can be adjusted according to the thickness of the thread and the strength of the applied tension.

As clarified from the above description, in the present invention, a coil spring 30 is fitted into a protruding piece provided on the rear arm 18 by the support shaft 9 of the movable lever 13 provided with the thread presser curved portion 14. The coil spring 30 is rotated at its lower end by a tightening nut 29 that swings around the support shaft 9 and selects an arbitrary swing position and tightens it to the rear surface of the arcuate guide plate 21.
Since the structure allows the yarn elasticity to be adjusted by arbitrarily and delicately adjusting the elasticity of the yarn, it is now possible to freely adjust the yarn tension, whereas conventional thread tensioners of this type have been unable to adjust the yarn tension. Furthermore, even if a large number of movable levers 13 are supported, the adjustment operation described above can be performed all at once and evenly.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the present invention, and FIG. 1 is a plan view, FIG. 2 is a side view cut along the line A--A in FIG. 1, and FIG.
The figure is a perspective view showing the difference between the thread presser curved portions of the fixed lever 10 and the movable lever 13, with the sliding pieces 12 and 15 removed. FIG. 4 is a perspective view of the thread guide 4. DESCRIPTION OF SYMBOLS 1... Guide plate, 3... Projection part, 4... Thread guide, 7... Shaft support piece, 9... Support shaft, 10... Fixed lever, 11... Thread presser curved part, 13... Movable lever , 14... Thread presser curved part, 18... Arm,
19...Protruding piece, 21...Circular guide plate, 25...
Long hole, 26... Rocking receiving plate, 27... Through hole, 28...
...Screw rod, 29...Tightening nut, 30...Coil spring.

Claims (1)

[Scope of utility model registration request] In a thread tensioning device consisting of a fixed lever and a movable lever, which are arranged symmetrically with curved parts of the thread presser formed almost at right angles to the thread passing direction, and with the curved parts of the thread presser being different from each other on their sides, the support shaft of the movable lever is An arc-shaped projecting piece fitted with a coil spring that presses the curved part of the thread presser in the opposite direction on the side surface of the curved part of the thread presser of the fixing lever is provided on the arm that extends beyond the support shaft. A swing receiving plate having one end fitted is provided, the protruding piece is passed through the swing receiving plate, one end of the coil spring is supported by the swing receiving plate, and the support shaft is fixed approximately at the center. A circular arc guide plate was provided, and a threaded rod passing gently through a long hole provided in the circular arc guide plate was attached to the swing receiving plate, and a tightening nut corresponding to the back surface of the circular arc plate was screwed onto the screw rod. An elasticity adjusting device for a thread tensioner, characterized in that: