JPH06278208A - Endless rope connecting apparatus - Google Patents

Abstract

PURPOSE:To rapidly and certainly perform the thermal welding of the respective end parts of ropes. CONSTITUTION:An endless rope connecting apparatus is constituted of a rope clamp unit 11 consisting of one clamp part 11L and other clamp part 11R opposing the respective end parts of ropes R each other in such a state that the axes of the ropes R are matched with a reference axial line A to clamp them, contact and separation means 21L, 21R relatively moving the respective clamp parts 11L, 11R along the reference axial line A to allow them to approach and separate each other and a electric heating plate 31 capable of being set to the predetermined position between both clamp parts 11L, 11R and capable of retreating from the predetermined position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endless rope connecting device. In particular, it relates to a connection device for an endless rope used for connecting a cut portion of the endless rope.

[0002]

2. Description of the Related Art For example, a belt drive mechanism transmits a power by spanning and rotating a belt (an endless rope) between two pulleys arranged apart from each other. It is widely used in various industrial fields because it has a shock absorbing effect and has the advantage of not overloading the drive source motor.

Usually, an endless rope is formed by heat-welding both ends of a single rope made of urethane rubber. The shape (diameter, length, etc.), connection method, etc. of this endless rope are calculated by design from the transmission torque, distance between pulleys, etc., and manufactured based on the calculated values.

By the way, a user may operate a machine (for example, a cup container manufacturing machine) incorporating the above-mentioned belt driving function in an unpredictable operation mode at the design stage. Therefore, the endless rope may break early from the weakest joint. In such cases,
In order to promptly restart the operation, a worker on the site presses the soldering iron against each end of the broken rope to melt the soldering iron, for example, and then abuts them to heat-weld each other.

[0005]

However, in such a rope connecting method, it takes time and labor, and the connection tends to be insufficient due to aggravation of the feeling, and the rope is often disconnected immediately even if it is attached. Further, since such work requires a certain degree of skill, the staffing is also limited. Also,
There is also a problem from the safety point of view that the soldering iron or the like may touch other machine parts and damage them, or the operator may be burned.

In view of the above circumstances, an object of the present invention is to provide an endless rope connecting device capable of quickly and reliably heat-welding both ends of a rope.

[0007]

SUMMARY OF THE INVENTION A connecting device for an endless rope according to the present invention is capable of being clamped by facing each end of a rope with their respective axes aligned with a reference axis, and one clamp and the other. Rope clamp means consisting of clamp parts, contacting / separating means that allows each clamp part to move relative to each other along the reference axis to approach / separate, and heat-welding heat that can be positioned and retracted at a predetermined position between both clamp parts And a member are provided.

[0008]

In the present invention having the above-mentioned structure, when the both ends of the rope are thermally fixed, the heat-generating member for heat welding is heated to a predetermined temperature and positioned at a predetermined position. Next, one end and the other clamp part clamp each end of the rope so as to face each other via the heat generating member. Next, the respective clamp portions are brought close to each other by using the contacting / separating means, and the respective end portions of the rope are brought into contact with the heat generating member. As a result, each end of the rope is melted and is ready for heat welding. Next, after retracting the heat generating member, the respective clamp portions are brought close to each other so that both ends of the rope are butted against each other. Thereby, both ends of the rope are heat-welded to each other. After the heat welding, the clamps of the ropes are released from the clamps, and then the clamps are returned to their original positions.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. This endless rope connecting device comprises a base 1, a rope clamp means (11), and a contacting / separating means (21L, 21R).
And a heat-generating member (31) for heat welding, and both ends of the rope R can be quickly and reliably heat-welded.

The rope clamp means is capable of clamping by clamping the respective ends R1 and R2 of the rope R so as to oppose each other with their respective axes aligned with the reference axis A.
And a rope clamp unit 11 including the other clamp portion 11R. The unit 11 makes it unnecessary to align the axis of the rope R.

On the other hand, the clamp portion 11L is composed of a lower roller holding portion 12L, an upper roller holding portion 14L, and a clamp cylinder 17L for moving the upper roller holding portion 14L toward and away from the lower roller holding portion 12L. Similarly, the other clamp portion 11R includes the lower roller holding portion 12
R, upper roller holding portion 14R and clamp cylinder 1
It is composed of 7R.

V-grooves 15 are formed on the upper surfaces of the lower rope holding portions 12L and 12R so that the ends R1 and R2 of the rope R can be held so that their axes coincide with the reference axis A, respectively. . Also, the upper rope holding portions 14L, 14R
Are provided so that they can approach and separate from the corresponding lower rope holding portions 12L and 12R. Further, a V groove 13 is formed on the lower surface of each of the upper rope holding portions 14L and 14R in the figure so as to be aligned with each V groove 15 below.

Further, the contacting / separating means is composed of each clamp portion 11L,
It is a means for relatively moving 11R along the reference axis A so as to approach and separate. In this embodiment, the contacting / separating means is formed by linear ball slides 21L and 21R having a built-in cylinder.

Further, the heat-generating member for heat-welding is provided so that it can be positioned and retracted at a predetermined position between the clamp portions 11L and 11R by the drive linear ball slide 35. The heat generating member for heat welding has a predetermined temperature (24 in this embodiment).
It is composed of an electric heating plate 31 capable of raising the temperature to 0 ° C. The heating plate 31 can melt each end of the rope R made of urethane rubber.

The electric heating plate 31 is positioned and retracted at a predetermined position between the clamp parts 11L and 11R by the drive linear ball slide 35.
In FIG. 1, 32L and 32R are end portions R of the rope R.
Positioning plates for positioning 1 and R2 are provided so that they can be positioned and retracted on the reference axis A by manually operating a handle (not shown) extended longer than the plates.

The above-described clamp cylinders 17L and 17R, the linear ball slides 21L and 21R, the electric heating plate 31, and the drive linear ball slide 35 of the roller clamp unit 11 are controlled by the thermal welding control device 41. The heat welding control device 41 is composed of a CPU, a ROM, a RAM and the like. A handle (not shown) is provided on the base 1 for convenience of transportation.

Next, the operation will be described. When both ends of the broken rope R are heat-welded to each other, the heat-welding control device 41 controls the electric heating plate 31 to raise the temperature to 240 ° C., and then the electric heating plate 31 is positioned at a predetermined position on the reference axis A. The drive linear ball slide 35 is controlled as described above (ST10). Further, the positioning plates 32L and 32R are manually positioned so as to be aligned with the heating plate 31.
At this time, since the positioning plates 32L and 32R can be operated by gripping the long pulled-out handles, the hands do not touch the electric heating plate 31. Next, the ends of the rope R are brought into contact with the positioning plates 32L and 32R, respectively, and in this state, the ends R1 and R2 of the rope R are opposed and clamped by the clamp portions 11L and 11R (ST11). After the rope clamp, the positioning plates 32L and 32R are retracted.

Next, the clamp portions 11L and 11R are brought close to each other by using the linear ball slides 21L and 21R, and each end of the rope R is brought into contact with the heating plate 31 (ST12).
When the contact time T1i has passed the set time T1s and each end of the rope R has melted, the clamp portions 11L, 11R
Is slightly separated by using linear ball slides 21L and 21R, and each end of the rope R is separated from the heating plate 31 (ST1.
3, 14). Next, the electric heating plate 31 is pulled out and retracted,
In that state, the clamp portions 11L and 11R are brought close to each other, and both ends of the rope R are butted against each other (ST15, 16).
When the abutment time T2i has passed the set time T2s and both ends of the rope R are completely heat-welded to each other, the clamps 11L and 11R are released from the clamps, and then the clamps 11L and 11R are fixed. Return to the original position (ST17, 18, 19). As a result, an endless rope in which the joints are completely connected is formed. If burr at the joint of the endless rope becomes a concern, remove it with a nipper or the like.

However, according to this embodiment, the rope R
The rope clamp unit 11 including the one clamp portion 11L and the other clamp portion 11R, which can be clamped by facing each other with their respective axial centers aligned with the reference axis A, and the respective clamp portions 11L and 11R. Contacting / separating means (21) capable of approaching / separating by relatively moving along A
L, 21R) and the electric heating plate 31 which can be positioned and retracted at a predetermined position between both clamp parts (11l, 11R) are provided, so that both ends of the rope R are quickly and reliably heat-welded. be able to.

Further, since the respective ends of the rope R can be connected in a state where the axes are accurately aligned, the rope R concerned
Can be used to ensure smooth power transmission.

Further, work safety is ensured by preventing burns and damage to other parts. Further, since the handle is provided on the base 1, it is convenient for transportation and insertion into a rope connecting portion.

[0022]

According to the present invention, the rope clamp means comprising one clamp portion and the other clamp portion capable of clamping each end of the rope by facing each other with their respective axial centers aligned with the reference axis, and the respective rope clamping means. Since the contacting / separating means capable of approaching / separating by relatively moving the clamp part along the reference axis line and the heat-generating member for heat welding capable of positioning and retracting at a predetermined position between the both clamp parts are provided, The ends of the rope can be heat-welded quickly and reliably.

[Brief description of drawings]

FIG. 1 is a perspective view for explaining an overall configuration of an embodiment of the present invention.

FIG. 2 is likewise a block diagram for explaining an electrical / electronic configuration.

FIG. 3 is likewise a flowchart for explaining the operation.

[Explanation of symbols]

 11 Rope Clamping Means 21 Movement Driving Means 31 Electric Heating Plates (Heating Members for Heat Welding)

Claims (1)

[Claims] 1. A rope clamp means comprising one clamp portion and another clamp portion, which can be clamped by facing each end of a rope with their respective axes aligned with a reference axis, and each clamp as a reference axis. A connecting device for an endless rope, characterized in that a contacting / separating means capable of relatively moving along and approaching and separating, and a heat-generating member for heat welding capable of being positioned and retracted at a predetermined position between both clamp parts are provided. .