JPH06117496A - Wire rod for wrapping connector driving - Google Patents

Abstract

PURPOSE:To ensure power transmission while being compact by forming teeth at equal pitches around the whole periphery of a wire rod of circular cross section. CONSTITUTION:Teeth 2 for preventing a slip with a pulley during the transmission of driving force are formed around a wire rod body 3. The shape of the tooth 2 is not specified if the tooth 2 can be meshed with the tooth of the pulley, but the same shape as the tooth form of a gear is desirable from the viewpoint of transmission efficiency. Power transmission torque can be also controlled by changing the height (h) and pressure angle alpha of the tooth 2. This wire rod F for wrapping connector driving is manufactured by drawing fused synthetic resin material through a die to form the wire rod 3 and forming the tooth part 2 through a toothed metal mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding transmission wire suitable for transmitting power from a prime mover to a follower, and more particularly to a state in which a rotational driving force of a motor or the like does not slip. The present invention relates to a winding transmission wire suitable for transmitting to a driven mechanism.

[0002]

2. Description of the Related Art Conventionally, rubber sheet materials have been cut,
Alternatively, in a printer device such as an ECR or POS terminal, as a device that pulls out recording paper in a rolled state, prints it, and then cuts it, a circular rotary blade that moves while rotating and a long fixed blade are used. A combined cutting device is utilized.

A cutting device of this type will be described with reference to Japanese Patent Application Laid-Open No. 1-183396 shown in FIGS.
In the frame 105, a column 111 is erected via a support plate 110 which is attached at a position displaced in the front-rear direction, and a horizontal support plate 112 is provided between the upper ends of both columns 111.
Has been erected.

A linear pole slide guide rail 113 is laid in the longitudinal direction on the lower surface of the horizontal support plate 112, and a linear pole slide guide 114 is slidably fitted to the linear pole slide guide rail 113 so as to be slidable. A travel support member 115 is fixed to the lower surface of the slide guide 114. From the front sides of the left and right end portions of the horizontal support plate 112, pivotal support members 116 and 117 are vertically provided, and the lower ends of the pivotal support members 116 and 117 respectively rotate the rotary shaft 1
18, 119 are pivotally mounted, a driven pulley 120 is integrally pivotally mounted on one rotary shaft 118, and a drive pulley 121 is fitted on the other rotary shaft 119, so that both pulleys 120, 1
A toothed belt 122 as shown in FIG. 6 is stretched between 21 and the running member 115 is fixed to the belt on the upper side of the toothed belt 122 by a screw.

The horizontal support plate 11 near the drive pulley 121
A motor 125 supported by a support plate 124 is provided on the upper surface of the pulley 2.
6 is fitted. A rotary shaft 119 integrated with the drive pulley 121 is provided with a pulley 127 fitted side by side with the drive pulley 121.
The toothed belt 128 is stretched between the pulley 126 and the pulley 126.

Therefore, by driving the motor 125, the drive pulleys 127 and 121 are rotationally driven through the toothed belt 128, and the rotation of the drive pulley 121 is rotated.
22 can be transmitted. The traveling support member 115 fixed to the toothed belt 122 by the rotation of the toothed belt 122 travels along the rail 113 via the suspension member 114. As the traveling support member 115 travels, the rotary blade 148 supported by the support member via the cylinder 141 also travels, whereby the sheet material 102 is moved.
Can be cut.

[0007]

By the way, in the above-mentioned device, the traveling support member 115 for supporting the rotary blade 148.
The toothed belt 122 is used to drive the vehicle right and left in the figure. However, since this belt has a width and the teeth are formed only on the inner surface of the belt, the power transmission direction cannot be freely changed. Therefore, in the above device, two toothed belts are provided as shown in the figure. The structure has to be used. Further, in the above-described sheet cutting apparatus, the mounting position of the motor is limited due to the relationship with the toothed belt, which is not suitable for downsizing the apparatus. Further, the toothed belt 122 and the drive pulleys 121, 127 There is a problem that the toothed belt 122 is forcibly driven by the drive pulley when a transmission torque equal to or more than the design value is applied between the toothed belt and the toothed belt is cut or a large load is applied to the motor. In order to solve such a problem, there is also one that employs a screw transmission mechanism as a moving means of the rotary blade support member (Japanese Patent Laid-Open No. 143879/1990), but the screw transmission mechanism is compared with the winding transmission using a wire. The mechanism is inevitably complicated, and it is disadvantageous in reducing the size and weight.

Therefore, in order to solve the above-mentioned conventional problems, the present invention has no limitation in the direction of power transmission and can efficiently transmit power without slipping between the drive pulley and the driven pulley. At the same time, we have proposed a winding transmission wire rod that causes slippage between the toothed belt and the drive pulley when a drive torque exceeding the design value is applied, and this winding transmission wire rod and a pulley having teeth that mesh with this wire rod. The purpose of the present invention is to realize a power transmission mechanism that is small in size and has a high degree of freedom in design, by enabling reliable power transmission with a single wire even in a complicated power transmission direction.

[0009]

For this reason, the first technical solution adopted by the present invention is characterized in that teeth are formed at equal pitches around a substantially circular wire rod. A second technical solution is a winding transmission wire rod characterized in that teeth are formed at equal pitches around a wire rod having a substantially circular cross section and a lubricating layer is formed on the surface thereof. Yes, these are the means for solving the problems.

[0010]

The wire for winding transmission is used as a power transmission means like the conventional winding transmission. At this time, since the main winding power transmission wire has teeth of equal pitch formed over the entire circumference of the wire having a substantially circular cross section, the power transmission direction can be freely changed as shown in FIG. Further, since it has teeth, slippage does not occur between the winding power transmission wire and the pulley, and the transmission efficiency is not reduced. Further, since it has teeth, it is possible to precisely control the movement amount (positioning of the driven member) of the winding transmission wire rod as necessary. However, when a drive torque exceeding the design value is applied, slippage occurs between the toothed belt and the drive pulley, and it is possible to prevent cutting of the belt and overload operation of the motor.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view and a cross-sectional view of teeth of a winding transmission wire according to an embodiment of the present invention, and FIG. 2 is an enlarged explanatory view of winding a dynamic winding transmission wire around a pulley.

In FIG. 1, reference numeral 1 denotes a toothed winding transmission wire having a substantially circular cross section according to the present embodiment. Around the wire body 3, a winding power transmission wire and a pulley are provided while driving force is being transmitted. The teeth 2 are formed to prevent slippage of the teeth. The teeth 2 may be of any type as long as they mesh with the teeth formed on the pulley, but if possible, those having the same shape as the tooth profile of the gear are more preferable in terms of transmission efficiency. By changing the tooth height h and the tooth pressure angle α as shown in FIG. 1, the power transmission torque between the tooth and the pulley can be controlled. This winding transmission wire rod can be formed by using an appropriate material and an appropriate manufacturing method. For example, as shown in FIG. 3, a molten synthetic resin material is drawn through a die to form a wire rod, and then a toothed mold is formed. If teeth having an equal pitch are formed on the peripheral surface of the wire while passing the wire through, it can be continuously and easily manufactured. At this time, it is desirable that the teeth of the belt have a shape based on an involute or a cycloid like the teeth of the gear, and it is also desirable to determine the height of the teeth and the pressure angle depending on the place of use. If necessary, a core material made of a reinforcing wire or the like may be arranged in the winding transmission wire material.

Further, in the step of forming the wire rod, a lubricant layer 7 is formed on the outer peripheral surface of the wire rod when a suitable lubricant powder 6 is dropped on the wire rod in front of the inlet of the die 5 as shown in FIG. As a result, the meshing between the winding power transmission wire thus formed and the pulley becomes smoother. In addition, if a drive torque exceeding the design value is applied, slippage occurs between the toothed belt and the drive pulley, which can prevent the belt from being cut and the motor from being overloaded. The winding transmission wire rod formed as described above is used as a power transmission means similarly to the conventional winding transmission.

Since the winding wire for transmission has teeth formed over the entire circumference of the wire having a substantially circular cross section, the power transmission direction can be freely changed as shown in FIG. Further, since it has teeth, slippage does not occur between the winding power transmission wire and the pulley, and the transmission efficiency is not reduced. Further, since it has teeth, it is possible to precisely control the amount of movement of the winding transmission wire (positioning of the driven member), and for example, in a drive mechanism for moving a pen or the like used in an automatic drafting machine. If this winding transmission wire is used instead of the wire, it becomes possible to accurately control the moving position of the pen only by controlling the rotation amount of the motor. In addition, the power transmission torque between the tooth and the pulley can be controlled by changing the tooth height and tooth angle. For example, if the tooth height is reduced and the pressure angle of the tooth is increased, the wire rod will not move on the gear. It is possible to prevent excessive torque transmission and prevent damage to the equipment.

In the above-mentioned embodiments, the description has been made by taking the example in which the synthetic resin is used as the material for the winding transmission wire, but the material is not limited to the synthetic resin and any flexible material can be used. Alternatively, the teeth may not be formed integrally with the wire, but the teeth may be formed as separate members to cover the teeth, or the teeth may be formed by other appropriate methods. Further, this winding transmission wire is not limited to the above-mentioned winding transmission of the sheet cutting device, but can be used as various winding transmission wire rods using a wire rod having a diameter of several millimeters to a wire rod having a diameter of several centimeters. By changing the strength, the thickness, or the material, it is possible to use all wires and belts for winding transmission instead of all wires and belts.

The present invention can be embodied in various other forms without departing from the spirit and the main characteristics thereof.
Therefore, the above-mentioned embodiment is merely an example and should not be limitedly interpreted. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

[0017]

As described in detail above, the winding transmission wire rod according to the present invention has teeth formed over the entire circumference of the wire rod having a substantially circular cross section, so that unlike conventional belt transmission, power transmission is performed. There is no restriction on the direction, the restriction on power transmission is removed, and the product can be downsized. Since the wire has teeth, no slippage occurs between the winding power transmission wire and the pulley, and the transmission efficiency is not reduced. Further, since it has teeth, the amount of movement of the winding transmission wire can be precisely controlled, and the driven member can be easily positioned. Further, by designing the height of the teeth to be low and the pressure angle of the teeth to be large, it is possible to suppress excessive torque transmission and prevent damage to the device. It is possible to obtain excellent effects such as.

[Brief description of drawings]

FIG. 1 is a perspective view and a cross-sectional view of a tooth of a winding transmission wire according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a state where a winding transmission wire is wound around a pulley.

FIG. 3 is a process diagram of forming a lubricating layer on the surface of a winding transmission wire.

FIG. 4 is an explanatory view of power transmission using a winding transmission wire rod.

FIG. 5 is a front view of a conventional sheet material cutting device.

FIG. 6 is an explanatory diagram of a toothed belt used in a conventional sheet material cutting device.

[Explanation of symbols]

 1 Winding transmission wire 2 Teeth 3 Wire 4 Pulley 5 Die 4 Lubricant powder

Claims (2)

[Claims] 1. A wire rod for winding transmission, characterized in that teeth are formed at an equal pitch over the entire circumference of the wire rod having a substantially circular cross section. 2. A winding transmission wire rod, characterized in that teeth are formed at an equal pitch over the entire circumference of the wire rod having a substantially circular cross section and a lubricating layer is formed on the surface thereof.