JPH0411015Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is designed to connect, for example, when a thermoplastic plastic belt used as a power transmission part in a roller conveyor is cut, by abutting and welding the cut surfaces. It relates to connection jigs for power transmission belts, etc. used for

[Conventional technology]

In the case of slip-torque type roller conveyors, which rotate the rollers due to frictional engagement between the rollers and the roller shaft due to the load of the conveyed object and convey the conveyed objects on the rollers, the drive rotates together with the output shaft of the motor. A belt is wound between the shaft and the roller shaft to rotate the roller shaft.

[Problems to be solved by the invention] However, this belt sometimes breaks or stretches during long-term use, making it impossible to transmit power. In these cases, the belt must be replaced with a new one, but attaching it to the drive shaft requires time and skill, as the belt must be replaced after removing the drive shaft or roller shaft, and repair costs are high. There were such shortcomings.

[Means for solving problems]

The present invention was made to solve the above-mentioned problems, and it is easy to change the usability of the belt, such as right-handed or left-handed, by shortening the cut belt or the stretched belt, and it can be operated with one hand. By firmly supporting the cut surface with a clamping tool and heat welding or gluing it so that the axes are aligned, it is possible to immediately remove the drive shaft or roller shaft on-site without having to be unskilled. It is now possible for anyone to repair it.

〔Example〕

The present invention will be described below with reference to an embodiment shown in the drawings.

Reference numeral 1 denotes a guide rail having a handle 2 on one side and approximately half the length of the handle 2, and this rail 1 is made of heat-resistant material with a smooth surface, for example. It is made of metal, etc.

3 is detachably and slidably attached to the rail 1 using the same material as the rail 1 so that the mounting direction can be changed by 180 degrees so that the usability is different for right-handed or left-handed users. They are a pair of belt clamping bodies, and the belt clamping bodies 3, 3 have a main body 4 through which an opening 4a is inserted into the rail 1.
In order to sandwich the left and right cut surfaces 5a, 5a at the cut point of the plastic belt 5 formed of thermoplastic plastic such as urethane in abutting state, there is a ring on the upper surface of the main body parts 4, 4 that can be opened and closed. It is formed from the attached presser plate 6.

In order to speed up the release operation, this retainer plate 6 always receives the upward biasing force of the coil spring 7 whose lower major portion 7a is housed in the hole 4b provided in the main body 4. It is screwed to the main body part 4 using a screw 8 having a knob 8a against the urging force of a coil spring 7 so as to be openable and closable. Reference numeral 6a denotes side plates bent downward on the left and right sides of the presser plate 6, and by disposing the main body 4 between the side plates 6a, the opening and closing operations of the presser plate 6 can be performed smoothly without rattling. obtain.

Reference numeral 9 indicates the main body portions 4, 4 so that when the cut surfaces 5a, 5a at the cut point of the plastic belt 5 are connected, their axes I, I' are substantially aligned and abutted without deviation. Holding grooves having substantially semicircular side faces are formed on the upper surface along the rail 1 so that the axes I and I' of the cut surfaces 5a and 5a substantially coincide with each other, and this holding groove 9 is the one shown in the figure. In this case, one piece is provided for each belt holding body 3, but depending on the diameter of the plastic belt 5 to be connected, several pieces of different sizes may be provided facing each other, if necessary. The holding groove 9 may be provided with a non-slip surface.

Reference numeral 10 denotes belt clamping bodies 3, 3 for fixing the opposing belt clamping bodies 3, 3 to the rail 1.
This screw 10 serves as a fixing means, and when the tip 10b of the screw 10 is pressed against the rail 1 by pinching the knob 10a and screwing it in, the belt clamping bodies 3, 3 are attached to the rail. Fixed to 1.

Reference numeral 11 denotes a mounting plate fixed to the back surface of the main body portion 4 of the belt clamping bodies 3, 3 using several machine screws 12.

13, in order to know the amount of movement of the belt holding body 3,
This is a scale displayed on the side surface of the rail 1 as required.

One embodiment of the present invention is constructed as described above, and when the cut surfaces of the cut plastic belt 5 are connected or the plastic belt 5 is stretched due to long-term use, the following processing is performed.

First, when a knob 8a screwed into a pair of opposing belt clamps 3, 3 is grasped and a screw 8 is loosened, the presser plates 6, 6 are opened by the biasing force of the coil spring 7. At this time, side plates 6 are attached to the left and right sides of the presser plate 6.
Since a and 6a are bent and come into contact with the front and rear of the main body portion 4 to restrict its swinging, the presser plate 6 opens without wobbling.

Thus, the cut surface 5a of the plastic belt 5 is placed in the holding grooves 9, 9 of the two belt holding bodies 3, 3.
5a are housed so as to face each other so that the rear part forms a ring O, and by tightening the screw 8 against the biasing force of the coil spring 7, the cut surface 5 is
a, 5a are pressed down with a presser plate 6, and held and fixed with belt clamping bodies 3, 3. If the plastic belt 5 is stretched due to long-term use, the excess portion is trimmed and the cut surfaces 5a, 5a are clamped and fixed by the pair of belt clamps 3, 3 in the above operation.

Then, while gripping the handle 2 with, for example, the left hand, loosen the screw 10 that serves as a fixing means for the belt clamping body 3 on the hand side to release the fixation to the rail 1, and then press the belt clamping body 3 on the rail 1 with pressure from, for example, the thumb. By pressing this belt holder 3 toward the other belt holder 3 in the direction of arrow A as shown in FIG. The left and right cut surfaces 5a, 5a of the belt 5 are brought into contact with each other. At this time, 2
Since the two belt clamping bodies 3, 3 are provided with holding grooves 9, 9 facing each other along the rail 1, when the belt clamping body 3 on the front side is slid toward the other side, the plastic belt 5 The left and right cut surfaces 5a,
The axes I and I' of the plastic belt 5a are naturally positioned and substantially coincident to abut each other, and the cut loop O of the plastic belt 5 is closed. At this time, the front belt holding member 3 moves smoothly along the rail 1 because it is made of a smooth material like the rail 1. Further, when the belt clamping body 3 is moved, the ring O of the plastic belt 5 is positioned so as to surround the pair of belt clamping bodies 3, 3, so that it does not interfere with the sliding operation. Moreover, rail 1
As shown in the figure, in addition to the rectangular side surface, the belt is formed in a polygonal shape, a dovetail shape that is inserted into a dovetail groove, etc., and the opening of the belt clamping body 3 is formed in a shape that can be moved freely. When the clamping body 3 is moved, it does not rattle and is prevented from becoming stiff. Then, by handling the cut surfaces 5a, 5a of the abutted plastic belts 5 with a heating tool such as an electric iron held in the right hand, they are heated and welded to complete the connection work. In this case, since the connecting work of the two cut surfaces 5a, 5a of the plastic belt 5 is performed at a location away from the handle 2, it can sufficiently withstand the temperature during heating with an electric iron. After the plastic belt 5 is connected, the screw 8 is loosened and the plastic belt 5 is removed from the belt clamps 3, 3.

The above description has been made for the case where the cut surfaces 5a, 5a of the cut plastic belt 5 are connected in a right-handed manner as shown in FIGS. When attempting to connect the plastic belt 5, the handle 2 must be grasped with the right hand, so move the belt clamping body 3 on the front side toward the belt clamping body 3 on the front side fixed at the opposite position. When doing the butting work, you have to prevent your hand from getting caught in the ring O that is gradually closing, and you have to handle the heating tool held with your left hand over the rail 1, which is inconvenient, so I changed it from right-handed to left-handed. You can also change the usability (see Figure 4).

To do this, first loosen the screw 10 and remove the two belt clamps 3, 3 from the rail 1, then rotate the belt 180°.
After rotating horizontally, the pair of belt clamps 3, 3 are loosely fitted onto the rail 1 again, and the screws 10, 10 are tightened to change the mounting direction of the pair of belt clamps 3, 3 from the right hand. Change to left hand. Both cut surfaces 5 of the plastic belt 5 were cut in the left-hand case using the same operation as in the right-hand case.
a, 5a between a pair of belt clamps 3, 3, and then move the belt clamp 3 located in front of the movable side toward the other belt clamp 3 on the stationary side. Both cut surfaces 5a, 5a can be brought into contact with each other.

In the above explanation, the work of colliding both cut surfaces 5a, 5a of the plastic belt 5 is performed by moving the belt clamping body 3 on the near side to the fixed belt clamping body 3 on the opposite side. However, by loosening the screw 10, the pair of belt clamping bodies 3, 3 are slid along the rail 1 in opposition to each other, and the work of abutting the pair of cut surfaces 5a, 5a is carried out by one clamping body 3. This may be done more quickly than when moving only one.

In addition, if holding grooves 9, 9 of different diameters are formed in the belt clamping bodies 3, 3, the holding grooves 9, 9 that match the diameter of the plastic belt 5 are selected from among these holding grooves 9, 9 and connected. You may also do the work.

Further, in the above embodiment, a pair of belt clamping bodies 3, 3
In both cases, the presser plate 6 is screwed in and opened and closed to clamp the left and right cut surfaces 5a, 5a of the plastic belt 5, but the presser plate 6 is pivoted to the main body 4 using a shaft or the like. At the same time, a torsion spring or the like is wound around the shaft, and the two leg ends are hooked to the main body part 4 and the presser plate 6, so that the presser plate 6 is constantly biased in the closing direction. It goes without saying that the cut surfaces 5a, 5a of the cut plastic belt 5 may be held using the belt holding bodies 3, 3 of the above-mentioned method.

The plastic belt is not limited to urethane, but can also be connected to other thermoplastic plastics or rubber, and this tool is not limited to endless objects such as drive belts, but can also be used to connect linear objects. It may also be used for connection.

[Effect of idea]

As mentioned above, the present invention has a pair of belt clamping bodies slidably and removably inserted so as to be able to change the mounting direction, facing one guide rail having a handle on one side. Since it is attached with screws, if a power transmission belt such as a plastic belt used in a slip-torque roller conveyor is cut or stretched, the left and right cut surfaces at the cut point can be replaced with a pair of belts. After the belt is clamped by the clamping body, both or one of the belt clamping bodies can be slid along the rail with one hand while holding the handle in one hand by loosening the fixing screws. Furthermore, by changing the mounting direction of the pair of belt clamping bodies relative to the rail by 180 degrees, the user can easily change the hand-held position between right-handed and left-handed. Therefore, even an unskilled person can easily abut the left and right cut surfaces at the cut point of the power transmission belt with one hand so that the axes are aligned accurately, and then use an electric iron or similar tool to remove the abutting portions. By heat welding or gluing with one hand using a heating tool, the connection at the cut point of a power transmission belt such as a plastic belt can be easily and reliably made.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a side view, FIG. 3 is a front view, and FIG. 4 is a front view showing the usability of the pair of belt clamps constituting this embodiment when they are mounted on a rail in a left-handed manner. DESCRIPTION OF SYMBOLS 1...Rail, 2...Handle part, 3...Belt clamping body, 5...Plastic belt, 5a...Cut surface, 6...Press plate, 7...Coil spring.

Claims (1)

[Scope of utility model registration request] One guide rail has a handle on one side that can be lifted with one hand, and the rail is removably inserted so that it can slide freely on the rail and change the mounting direction, and its axes substantially coincide with each other. It is characterized by comprising a pair of belt clamping bodies each having holding grooves facing each other capable of clamping the abutting ends of the belts to be connected, and a fixing means for fixing the clamping bodies at appropriate positions on the rail. Connection jig for power transmission belts, etc.