JPH0656059U - Control dancer - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a control dancer, in particular, for obtaining tension by a weight and stopping the moving sheave through an electromagnetic brake at any position other than the upper and lower limits to perform line hanging. Is characterized by. [Structure] The control dancer according to the present invention comprises a rotating body (6) rotatably mounted on the main body (1) and located above the moving sheave (4), and an electromagnetic member provided on the rotating body (6). This is a configuration including a brake (20) and a weight (22) for urging the moving sheave (4) upward via the rotating body (6).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dancer for control, and in particular, for obtaining tension by a weight and enabling the moving sheave to be stopped at any position other than the upper and lower limits via the weight and an electromagnetic brake for hanging. Regarding new improvements in.

[0002]

[Prior art]

 As a conventional control dancer of this type, for example, there is a tension control device for a winding machine disclosed in JP-A-3-232667, which is used internally by the present applicant. The configuration is as shown in FIGS. That is, in FIGS. 5 and 6, a movable sheave 4 is provided above the fixed sheave 2 that is fixedly provided on the lower portion of the main body 1, and is vertically movable via the long groove 3. The electric wire 50 is wound around each of the sheaves 24 and guided from the first guide sheave 2A to the second guide sheave 2B.

A rotary body 6 connected to a potentiometer 5 is rotatably provided on the upper portion of the main body 1. A pulley 7 formed at an end of the rotary body 6 has a movable sheave 4 A cable 13 connected to the up-and-down moving body 8 having is wound and provided.

The cable 13 is connected to a torque motor 10 provided on the back surface 1 b of the main body 1 via a guide roller 9 provided on the side portion 1 a of the main body 1, and changes the voltage applied to the torque motor 10. As a result, the voltage transmitted to the moving sheave 4 was changed, the voltage was set to zero, and the moving sheave 4 could be stopped at the lower limit position.

[0005]

[Problems to be solved by the device]

 The conventional control dancer has the following problems because it is configured as described above. In other words, the above-mentioned torque motor applies tension to the wire via the fixed sheave and the moving sheave, so if the voltage changes for any reason, the applied tension of the running wire will change and a large number of defective products will occur. There was an occasion. Also, when hooking the wire, the position of the moving sheave is only the lower limit, so it is not possible to start at the midpoint, and when the wire acceleration is large, it is necessary to increase the absorption amount of the dancer, that is, the stroke of the moving sheave. In addition, the magnitude of the tension on the wire is adjusted by changing the voltage of the torque motor with a variable resistor, which increases the cost.

The present invention has been made in order to solve the above problems, and in particular, the tension is obtained by the weight and the moving sheave is stopped at any position other than the upper and lower limits through the weight and the electromagnetic brake. It is an object of the present invention to provide a control dancer capable of hanging a line.

[0007]

[Means for Solving the Problems]

 The control dancer according to the present invention is a control dancer in which a wire is hung through a fixed sheave fixed to the main body and a movable sheave that is movably moved up and down and is urged upward. A rotor provided above the moving sheave, an electromagnetic brake provided on the rotor, and a weight for biasing the moving sheave upward via the rotor. The electromagnetic brake stops the rotation of the rotating body, and stops the moving sheave at an arbitrary position.

[0008]

[Action]

 In the control dancer according to the present invention, the electromagnetic sheave is turned on at any position other than the upper limit of the moving sheave, so that the rotation of the rotating body is stopped. When stopped, in this state, the electric wire is wound around the fixed sheave and the moving sheave to hang the wire, and if the electromagnetic brake is turned off with the wire hung, the moving sheave is urged upward by the force of the weight. Sufficient tension can be applied to the wire that has been hooked.

[0009]

【Example】

 Hereinafter, preferred embodiments of the control dancer according to the present invention will be described in detail with reference to the drawings. In addition, the same or equivalent portions as those of the conventional example will be described using the same reference numerals. 1 to 4 show a control dancer according to the present invention, FIG. 1 is a front view, FIG. 2 is a side view of FIG. 1, FIG. 3 is a configuration diagram showing hooking, and FIG. 4 is an overall line. It is a block diagram which shows a hanging.

In FIGS. 1 and 2, a movable sheave 4, which is vertically movable via a long groove 3, is disposed above the fixed sheave 2 fixedly provided on the lower portion of the main body 1. ing.

On the upper part of the main body 1, a rotary body 6 connected to a potentiometer 5 is rotatably provided via a pair of bearings 11 and 12, and an outer box of the potentiometer 5 is a support body (not shown). It is fixed to the main body 1 via. A pulley 7 is integrally provided at a substantially central position of the rotating body 6.

The end of the rotating body 6 is connected to the rotating portion 21 of the electromagnetic brake 20 fixed to the main body 1, and when the electromagnetic brake 20 is turned on, the rotation of the rotating body 6 is stopped. When it is turned off, the rotation of the rotating body 6 is continued.

The cable 13 connected to the U-shaped vertical moving body 8 having the moving sheave 4 hangs down via the pulley 7 and a guide pulley 7A provided on the upper part of the main body, and the lower end of the cable 13 A weight 22 is provided on the.

Next, a case where the electric wire 50 is actually hooked in the above-described configuration will be described. First, when the electromagnetic sheave 4 is turned on in the state where the movable sheave 4 is closest to the fixed sheave 2, the electromagnetic sheave 4 is kept stopped at the position shown in FIG. 1 (located at the lower end of the groove 3). In order to do so, line drawing is performed in this state. As shown in FIG. 3 and FIG. 4, the wire 13 is guided through the take-up machine 30 from the first guide sheave 2A, and the electric wire 13 is wound around the fixed sheave 2 and then around the movable sheave 4, and then again. The fixed sheave 2 is wound to be wound on the reel 41 of the winder 40 from the second guide sheave 2B, thereby completing the line hooking.

Next, when tension is applied to the electric wire 13, a brake (not shown) is applied to the take-up machine 30 and the take-up machine 40 in the above-described state, and the electromagnetic brake 20 is turned off. 6 becomes free, and the gravity of the weight 22 is applied to the moving sheave 4, so that the moving sheave 4 is raised slightly upward, and tension is applied to the electric wire 13.

Next, when the brakes of the take-up machine 30 and the take-up machine 40 are released, and the take-up machine 30 and the take-up machine 40 are started at the same time, the electric wire 13 in a tensioned state is taken up. It can be wound on the reel 41 of the machine 40.

The tension of the electric wire 13 can be changed by changing the weight 22 and changing the weight.

[0018]

[Effect of device]

 Since the control dancer according to the present invention is configured as described above, the following effects can be obtained. That is, the weight can be used to easily and inexpensively apply tension to the electric wire. Also, since the weight of the weight against the moving sheave is connected and disconnected using an electromagnetic brake, it is possible to lower the moving sheave during wire hanging to eliminate tension, and to easily obtain tension after wire hanging. You can

[Brief description of drawings]

FIG. 1 is a front view showing a control dancer according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a configuration diagram showing line drawing.

FIG. 4 is a configuration diagram showing the entire linework.

FIG. 5 is a front view showing a conventional control dancer.

FIG. 6 is a side view of FIG.

[Explanation of symbols]

 1 Main body 2 Fixed sheave 4 Moving sheave 6 Rotating body 20 Electromagnetic brake 22 Weight 50 Electric wire

Claims (1)

[Scope of utility model registration request] 1. A fixed sheave (2) fixed to a main body (1) and a movable sheave (4) provided so as to be vertically movable and biased upward.
In the control dancer in which the electric wire (50) is hooked via the rotating body (6) rotatably provided on the main body (1) and located above the moving sheave (4), Electromagnetic brake (20) provided on the body (6) and the rotating body (6)
And a weight (22) for urging the moving sheave (4) upwards via the electromagnetic brake (20) to stop the rotation of the rotating body (6), and the moving sheave (4) A control dancer characterized by being configured to stop at any position.