JPH0686093B2 - Crimping machine for conveyor belt room temperature bonding - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a portable crimping machine for joining wide conveyor belts by a room temperature bonding method.

(Prior Art) For the bonding and bonding of the conveyor belt joint surfaces by the room temperature bonding method, roller press bonding such as a hand roller (a) and a double acting roller (b) as shown in FIG. 3, or
A hammer (c) such as wood, iron or plastic was used for tapping and crimping. However, since all of the above crimping machines are manual work, the bonding area is 1m.
When the belt width exceeds about 1,600 mm and the joining lap length is about 600 mm, the pressure area of the pressure belt of the crimping device is 5 to 25 cm2.
Since this is small, the number of repeated crimping operations is large, which is a major factor in increasing the fatigue of welding workers.

Further, since the pressure-bonding position is tracked by eye registration, there is a high risk that pressure-bonding failure such as non-pressure-bonded portions and pressure unevenness may occur and the pressure cannot be quantitatively measured.

[Present invention] The present invention eliminates the drawbacks of the crimping device and crimping method as in the prior art described above, greatly reduces the working fatigue of crimping, controls the applied pressure to a predetermined pressure, and does not cause uneven pressurization. The present invention provides a wide belt portable crimping machine for the purpose of providing a vertical belt having vertically arranged parallel fasteners that are detachably provided at both ends so that the interval does not increase, and one frame to the other frame. A positioning member extending through the frame, a frame spring body that acts in a direction to increase the upper and lower frame intervals, and traveling between the upper and lower frames,
At least one applying a joining pressure to the belt joining portion mounted on the lower frame is a pressure roller driven by a reduction motor, and a guide roller supported by a joining pressure spring body which is guided by the upper frame and produces the joining pressure. , And on both sides of the pressure roller running part having side plates guided by the upper frame and the belt joint part on the lower frame,
The spacer comprises a spacer that determines an upper and lower frame interval at which a proper joining pressure is applied to the belt joining portion by the pressure roller traveling portion, and the spacer provides the proper joining pressure between the pressure roller and the guide roller. A conveyor belt cold-bonding machine comprising a basic spacer including a used belt spacer having a dimension equal to the distance generated by the above and a belt residual material of the belt joining portion.

(Example) Hereinafter, a specific example of the present invention will be described with reference to FIGS.
A mold (for belt width 2000 mm or less) will be described.

FIG. 1 shows the entire crimping machine for joining conveyor belts of the present invention. Reference numeral 1 is a pressure roller running unit. Reference numerals 2 and 3 are frames that are paired in the upper and lower sides and are made by welding together two I-shaped cross-sections made of a light alloy such as an aluminum alloy that also serves as the traveling guide rail of the pressure roller traveling unit 1. Since it is used, it is convenient for portable use. Upper and lower frames 2,3
By tightening a screw of a tightening tool 4 which is detachably provided at both ends of the belt, the tightening force is transmitted to the belt joint 6 by the pressure roller 5 of the pressure roller running portion 1 and the belt joint portion. 6 is pressed (pressed).

The pressure roller traveling unit 1 is moved forward and backward by the drive of the deceleration motor 7, and reciprocates the pressure movement in the belt width direction to rapidly join the belt joining unit 6. The pressurizing and moving operation of the pressure roller traveling unit 1 is remotely controlled by a control box (not shown) through an electric wiring (lead wire). The pressure moving speed of the pressure roller running portion 1 is about 2 m / min, which gives a sufficient joining pressure to the belt joining portion 6, and
It was confirmed to enable efficient work. The deceleration motor 7 uses 200V × 3 phases × 30W. Upper and lower frames
To make the belts 2 and 3 parallel and to apply a proper joining pressure to the belt joint 6, the belt joint 6 on the lower frame 3
This can be achieved by arranging spacers 8 on both sides of the frame and keeping the distance between the frames at a predetermined distance.

Further, the pressing force of the pressure bonding roller 5 applied to the belt joining portion 6 can be adjusted by changing the dimensions of the spacers 8 at both ends of the frame.

FIG. 2 shows the mechanism of the pressure roller traveling unit 1. Reference numeral 5 is a pressure roller, the left and right sides are the driving side and the right side is the driven side. Rotational force is transmitted from the reduction motor 7 to the drive-side pressure bonding roller 5 by the transmission chain 9, and the drive-side pressure roller 5 rotates in the forward and reverse directions. Reference numeral 10 denotes side plates on both sides of the pressure roller traveling unit 1, to which a guide roller 11 guided by an upper frame, a shaft of the pressure roller 5 for applying a bonding pressure to the belt bonding unit 6, and a frame of a reduction motor 7 are fixed. ing. Above the deceleration motor 7, a joining pressure spring body 12 made of spring steel or the like having four synthetic resin guide rollers 11 pivotally attached at both ends is screwed to a support rod 13. The upper part of the side plate 10 engages with the upper frame 2 and is bent inward with respect to each other, so that it is possible to simultaneously lift the guide when the crimp roller traveling unit 1 travels and the upper frame 2 when the upper frame 2 is lifted. I am doing it. A limit switch 14 is provided as a sensor on the lower side of the joining pressure spring body 12, and when the joining pressure is below the proper joining pressure, that is, when the joining pressure is small and the bending of the joining pressure spring body 12 is small, the limit switch does not work. The pressure roller traveling unit 1 is an electric circuit that does not move under pressure. Reference numeral 15 is a positioning tool provided on the lower frame 3 and made of a steel round bar or the like, which penetrates the upper frame 2. Reference numeral 16 is a frame spring body made of a spiral spring or the like fitted to the positioning tool 15 so that the upper and lower frames 2 and 3 are automatically opened when the tightening tool 4 is released. Reference numeral 17 denotes a traveling limit switch that restricts the movement of the pressure-bonding roller traveling unit 1, and contacts the stopper 18 to automatically turn off the current of the reduction motor 7 to stop the pressure-bonding roller traveling unit 1 and move to the spacer 8. To prevent the collision of Since the pressure-bonding roller running unit 1 moves while pressure-bonding on the belt bonding unit 6 placed on the lower frame 3, the displacement of the belt bonding unit 6, the pressure-bonding roller 5, especially the drive-side pressure-bonding roller 5 is Since it is easy to slip, it is preferable to prevent slippage by providing knurls or the like on the upper surface of the lower frame 3 and the outer peripheral surface of the pressure roller 5. The pressing force of the belt joint portion 6 of the pressure bonding roller 5 is set by tightening both ends of the frames 2 and 3,
The adjustment is as described above, but the dimension of the spacer 8 needs to be obtained in order to obtain an appropriate joining pressure.

For that purpose, first, as a result of various experiments, an appropriate joining pressure at room temperature joining was found to be 3 kg / cm2 or more, and at least 2 kg / cm2. Based on this, a rubber plate such as a conveyor belt is attached to the pressure roller running unit 1 on the pressure roller 5 side.
A steel plate is applied to the guide roller side to apply pressure,
When the proper joining pressure is generated by the bending of the joining pressure spring body 12 which pivotally attaches 11, the dimension l from the outer circumferential surface of the pressure roller 5 to the outer circumferential surface of the guide roller 11 is measured. By the way, if the dimension of the conveyor belt to be joined to the dimension l is added to the distance between the frames 2 and 3, that is, the dimension of the spacer, the pressure roller running portion 1
At, a proper joining pressure can be applied to the belt joining portion 6. That is, the dimension 1 may be used as the basic spacer 8-1 and the conveyor belt surplus material 8-2 joined thereto may be used as the spacer. If the conveyor belt to be joined is second-hand, the belt is worn out and is thinned accordingly, so it is necessary to subtract the worn-out dimension from the basic spacer 8-1. m
It is composed of a plurality of spacers including a used belt spacer 8-3 (a plurality of spacers can be dealt with depending on the degree of wear). Although not shown, the basic spacer 8-1 is fixed to the upper frame 2 with a bolt or the like. In order to prevent the pressure-bonding roller 5 from slipping off, it is advisable to place the slipping-off belt extra material 19 in contact with both sides of the belt joint portion 6.

(Effect) As described above, according to the present invention, when the conveyor belt is bonded at room temperature, the compression force is exerted by the compression roller 5 which travels between the upper and lower frames. It enables uniform and good adhesion over the entire surface, and can provide highly efficient belt joining,
Moreover, the fatigue of the operator is greatly reduced, and since the frame is made of light alloy, it is convenient to carry.

[Brief description of drawings]

FIG. 1 is a side view and a plan view showing the whole of the crimping machine for joining a conveyor belt according to the present invention, FIG. 2 is a side view and a plan view of a traveling portion of a crimping roller, and FIG. 3 is a conventional crimping machine. 1 ... Crimping roller running part, 2 ... Upper frame 3 ... Lower frame, 4 ... Tightening tool 5 ... Crimping roller, 6 ... Belt joining part 7 ... Deceleration motor, 8 ... Spacer 8-1 …… Basic spacer, 8-2 …… Belt extra material 8-3 …… Used belt spacer 9 …… Chain, 10 …… Side plate 11 …… Guide roller, 12 …… Spring body for joining pressure 13 …… Support rod , 14 ...... Limit switch 15 …… Positioning device, 16 …… Spring body for frame 17 …… Running limit switch 18 …… Stopper 19 …… Removal belt prevention material

Claims (1)

[Claims] 1. An upper and lower frame having vertically arranged parallel fasteners which are detachably provided at both ends so as not to enlarge the interval, a positioning tool extending from one frame to the other frame, and an upper and lower frame. Running between the frame spring body acting in the direction of expanding the interval and the upper and lower frames,
At least one applying a joining pressure to the belt joining portion mounted on the lower frame is a pressure roller driven by a reduction motor, and a guide roller supported by a joining pressure spring body which is guided by the upper frame and produces the joining pressure. , And on both sides of the pressure roller running part having side plates guided by the upper frame and the belt joint part on the lower frame,
The spacer comprises a spacer that determines an upper and lower frame interval at which a proper joining pressure is applied to the belt joining portion by the pressure roller traveling portion, and the spacer provides the proper joining pressure between the pressure roller and the guide roller. A conveyor belt cold joining crimping machine comprising a basic spacer including a used belt spacer having a dimension equal to the distance generated by the above and a belt surplus material of the belt joining portion.