JPH0471832A - Counting device for number of teeth of belt - Google Patents

Abstract

PURPOSE:To automatically count the number of teeth of belts of various kinds with a simply constructed device by counting the number of teeth of a belt on the basis of the total number of parts to be counted, which pass through a predetermined position when a rotary member is rotated under the condition where the belt is engaged with a pulley. CONSTITUTION:When a motor 6 is actuated to rotate a rotary member 7, a belt B held between a pulley 8 and a tension roll 20 is sent. Further, circular holes 11, 11,... provided on the outer circumference of a number counter plate 10 pass through the position of first adjacent sensor 13 in turn, respectively, by the rotation of the number counter plate 10, and the number of the passing circular holes 11, 11,... is counted by an operation panel 30 that receives detection signals from the sensor 13, so that the counted value is displayed on a counter 31. Since the circular holes 11, 11,... correspond to the teeth 8a, 8a,... of the pulley 8 and are provided in the same number as the teeth, the total number of the circular holes 11, 11,... which have passed through the position of the first adjacent sensor 13 coincides with the number of teeth of the whole belt B. Furthermore, the rotary member 7 consisting of the pulley 8 and the number counter plate 10 is detachably mounted to a main shaft 4.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a device for measuring the number of teeth on a belt.

(Conventional technology) Generally, when manufacturing long belts, a manufacturing method is adopted in which the belts are not formed into rings, but are made into strips, cut at a predetermined number of teeth, and the cut portions are joined together to create an endless belt. and
For this reason, the manufacturing process includes a step of measuring the number of teeth, and this determination of the number of teeth on the belt is usually performed manually.

(Problem to be solved by the invention) However, if the number of belt teeth is measured manually, it is possible to avoid counting errors or forgetting to count. In order to prevent this, a check system that performs counting twice is required, which poses the problem of increasing the number of inspection man-hours.

The present invention has been made in view of these points, and its purpose is to enable the number of teeth of each of many types of belts to be measured with a simple device configuration.

(Means for solving the problem) In order to achieve this object, the invention of claim (1):
A rotary member consisting of a pulley having teeth that mesh with the belt and a counting board integrally provided with the pulley and having the same number of parts to be measured as the teeth of the pulley is removably attached to the main shaft, and the belt is attached to the pulley. The part to be measured of the counting board that passes through a predetermined position when the rotating member is rotated by winding the belt with its teeth meshing with each other, and the belt is meshed with the pulley and is sent from one end to the other end. Count the total number of
This was determined to be the number of belt teeth.

That is, the present invention includes a main shaft rotatably supported on a base and rotationally driven by a driving means, a boo 1 that is detachably supported on the main shaft and has teeth on its outer periphery that mesh with the belt, and a rotary shaft on the pulley. A rotary member consisting of a counting plate provided on the body and having the same number of measured parts as the teeth of the pulley arranged concentrically at circumferential positions corresponding to the teeth of the pulley, and the counting plate at the base. a part-to-be-measured detection means that is attached to a detection position corresponding to the radial position of the part to be measured, and detects that the part to be measured has passed through the detection position as the counting board rotates; receive the output of the means,
The apparatus is characterized by comprising a counting means for counting the number of parts to be measured that have passed through the detection position.

In the invention of claim (2), in order to prevent the belt from coming off the pulley, and to determine whether the belt rides up, floats, comes off, etc. in a state where the teeth of the belt do not properly mesh with the teeth of the pulley. The outer periphery of the belt wound around the pulley is held down by a tension roll, and movement of this tension roll from a predetermined position is detected.

That is, the present invention includes a support arm that is supported movably on a base along a plane passing through the axis of a main shaft, a pulley of a rotating member that is rotatably supported on the support arm with a rotation axis parallel to the main shaft, and a pulley of a rotating member. and a tension roll biased to press the outer circumferential surface of the belt wound around the belt, and the tension roll when the teeth of the belt are normally engaged with the teeth of the pulley. The present invention is characterized by comprising roll displacement detection means for detecting displacement of the tension roll from the reference position of the roll.

(Function) With the above configuration, in the invention of claim (1), the heald is wound around the pulley of the rotating member with the southern portions of the healds meshing with each other, and in this state, the main shaft is driven by the driving means to rotate. Rotate part +4. As this rotary member rotates, the belt meshed with the pulley is fed and moved, and passes through the detection position of the measuring plate, and its passage is detected by the measuring plate detecting means. The counting means that receives the output signal of the detection means counts the total number of parts to be measured that have passed the detection position when the entire heald is fed into engagement with the burr. Since the above-mentioned parts to be measured are provided corresponding to the tooth parts of the pulley and have the same number, the total number of parts to be measured that have passed the above-mentioned detection position is the number of teeth of the belt. = The number can be measured automatically.

In addition, in that case, the rotating members (pulleys and counting plates) can be attached to and removed from the main shaft, so if you prepare multiple rotating members that are compatible with different types of belts, you can easily change the belt type. The number of teeth on the belt can be measured by replacing the rotating member with a corresponding one each time.

In the invention of claim (2), since the outer periphery of the belt wound around the pulley is pressed by the tension roll of the belt regulating means, the belt is held between the tension roll and the pulley, and the belt pulley This prevents it from coming off. Furthermore, when the belt is not properly engaged with the pulley, or when the belt has finished feeding and is removed from the pulley, the tension roll is displaced from the reference position, and this is detected by the roll displacement detection means. Therefore, the behavior of the belt can be reliably determined.

(Example) Embodiments of the present invention will be described below based on the drawings.

1 and 2 show a belt tooth number measuring device according to an embodiment of the present invention, 1 is a base, and this base 1 has left and right columns 2L, 2R respectively erected at the legs, This column 2L,
It is configured as a base 3 made of a flat plate that connects the upper parts of 2R. A main shaft 4 that passes through the base 3 in the front-rear direction is rotatably supported on the base 3, and the rear end (the right end in FIG. 2) of this main shaft 4 is connected to an electric motor 6 as a driving means fixed to the rear surface of the base 3. The main shaft 4 is rotated clockwise in FIG. 1 by the operation of the motor 6.

A rotary member 7 is detachably attached to and supported on the main shaft 4 at a portion protruding toward the front side of the base 3.

As shown in FIGS. 3 and 4, this rotating member 7 is
The main elements are a pulley 8 and a counting plate 10 which is rotatably fixed to the rear end of the pulley 8 by a bolt. The pulley 8 has a cylindrical shape around which a heald B of a predetermined length to be measured is wound, and a predetermined number (12 in the figure) of teeth 8a, 8a, . . . are formed on its outer periphery. The teeth 8a, 3a, . . . mesh with the teeth B, , B, . . . of the belt B to be measured (see FIGS. 6 and 7).

Further, a shaft insertion hole 9 through which the main shaft 4 is inserted is formed in the center of the pulley 8, and a key m9a into which the key 5 attached to the outer surface of the main shaft 4 is fitted is formed on the side surface of the shaft insertion hole 9. By fitting the key 5 into the key groove 9a and then inserting the main shaft 4 into the shaft insertion hole 9, the rotating member 7 is attached to the main shaft 4 so as to rotate integrally.

On the other hand, the counting plate 10 is made of a metal disc arranged concentrically with the pulley 8, and has the same number (12 circular holes 11, 11. ... (part to be measured) is formed through it, and as shown in FIG. 3, each circular hole 11 corresponds in the radial direction to the position of the teeth 8a, 8a, ... of the pulley 8 . Further, on the rear surface of the counting plate 10, a bottle 12 is provided protruding from the center side of the position of each of the circular holes 11.

A first proximity sensor 13 is mounted on the base 3 and the number plate 10 is connected to the base 3.
circular holes 11, 11. It is attached in correspondence with the radial position of... This proximity sensor 13 is connected to the counting board 100.
The metal of the counting plate 10 and the circular holes 11 indicate that each circular hole 11 has passed the position (detection position) of the proximity sensor 13 as it rotates.
The detection signal is detected based on the difference in material from the non-metallic part. Note that instead of the circular hole 11, a part to be measured made of a different material may be attached to the counting plate 10, and this part to be measured may be detected by a sensor.

Further, a sensor 14 is attached to the base 3 in a second proximity. This second proximity sensor 14 is arranged at a position corresponding to the radial position of the bin 12 on the rear surface of the counting board 10, and outputs a detection signal when this bin 12 approaches the proximity sensor 14. Then, based on the detection signal of the second proximity sensor 14, the rotational direction reference position of the counting plate 10 is determined.

A belt regulating mechanism 15 is provided for regulating the belt B from coming off when it is wound around the pulley 8. This regulation mechanism 15 has a guide rail 16 that extends in the vertical direction and is attached to a portion directly above the main shaft 4 at the upper front end of the base 3, and a slider 17 is slidably mounted on the guide rail 16. A support arm 18 is attached to this slider 17. Therefore, the support arm 18 is supported movably with respect to the base 3 along a vertical plane passing through the axis of the main shaft 4.

The support arm 18 has a horizontal portion 18a and a front and rear vertical portion 1.
It is a substantially U-shaped member consisting of 8b and 18c, and the horizontal part 1
8a extends forward from the slider 17 and is fixed to the slider 17 at its rear end, and the length of the horizontal portion 18a is the same as that of the pulley 8.
It is said to be about the same. On the other hand, the front vertical part 18b is suspended from the front end of the horizontal part 18a, and its lower end is located directly above the front end of the pulley 8. Further, the rear vertical portion 18c is suspended from near the rear end of the horizontal portion 18H, and its lower end is located directly above the rear end of the pulley 8. The lower ends of the front and rear vertical parts 18b and 18c are connected by a shaft 19 parallel to the main shaft 4, and a tension roll 20 that can come into contact with the outer peripheral surface of the belt B wound around the pulley 8 is attached to this shaft 19.
is rotatably supported by bearings. The slider 17 is urged downward by a spring (not shown), and the tension roll 2
0 is pressed against the outer peripheral surface of the belt B on the pulley 8, and the belt B is held between the tension roll 20 and the pulley 8.

Also, the vertical position of the tension roll 20 when the teeth B, B,... of the belt B are normally engaged with the teeth 8a, 8a,... of the pulley 8 is taken as the reference position. , a roll displacement detection mechanism 21 is provided for detecting displacement of the tension roll 20 from there. This detection mechanism 21 includes a pin 22 protruding from the right side surface of the slider 17, and a pair of upper and lower limit switches 23, which are attached to the front surface of the base 3 on the right side of the slider 17 and are turned on by contact with the pin 22. It consists of 24. The upper limit switch 23 is for detecting when the chinjon roll 20 is displaced upward from the reference position, and the tooth portion Bl of the belt B is
, B,... are the teeth 8a, 8a,... of the pulley 8.
・If the pin 2 does not engage properly, the pin 2 will rise.
It turns ON when it comes into contact with 2. On the other hand, the lower limit switch 24 detects that the tension roll 20 has moved downward from the reference position. When it disappears from between the pulley 8 and the tension roll 20, it comes into contact with the pin 22, which moves downward accordingly, and turns on.

An operation panel 3o is installed on the right side of the base 1, and a counter 31 is attached to the upper surface of this operation panel 30. The operation panel 30 includes first and second proximity sensors 13.
, 14, upper and lower limit switches 23, 24, and the motor 6 are connected, and the operation panel 30 drives and controls the motor 6 and also controls the first proximity sensor 13.
Based on the output signal of the circular hole 11.1 that passed through the position (detection position) of the first proximity sensor 13 as the counting plate 10 rotates,
1. . . . and display the counted value on the counter 31. Further, the reference position in the rotational direction of the counting plate 1o is determined based on the detection signal of the second proximity sensor 14, and furthermore, upon receiving the ON operation signal of the upper limit switch 23, the belt B is detected to have malfunctioning in engagement with the pulley 8. In addition, in response to the ON operation signal of the lower limit switch 24, the detachment or removal of the heald B from the pulley 8 is detected.

Next, the operation of the above embodiment will be explained.

First, while the tension roll 20 is moved upward, as shown in FIG. , the tension roll 20 is moved downward. As the tension roll 20 moves downward, the outer periphery of the tension roll 20 comes into direct contact with the outer peripheral teeth 8a8a, . . . of the pulley 8.

Next, the rotating member 7 is rotated by the operation of the motor 6,
When the pin 12 on the rear surface of the counting plate 10 moves to the position of the second proximity sensor 14 and the sensor 14 outputs a detection signal, the motor 6 is stopped.

At this time, the counting board 10 (rotating member 7) is positioned at the reference position in the rotation direction.

Furthermore, as shown in Fig. 6, while meshing the teeth B, Bl, ... of the belt B at the oven end to be measured with the teeth ga, ga, ... on the outer periphery of the pulley 8, apply tension. The roll 20 is raised and the starting end of the belt B is inserted into the gap between it and the pulley 8.

Thereafter, when the motor 6 is operated to rotate the rotary member 7, the belt B held between the pulley 8 and the tension roll 20 is fed. Further, as the counting plate 10 rotates, the circular holes 1111, . The circular hole 11.11. . . . is counted, and the count value is displayed on the counter 31.

At this time, a belt regulating mechanism 15 is provided to regulate the movement of the belt B wound around the pulley 8, and the outer periphery of the belt B is pressed by the tension roll 20, which is urged toward the center of the main shaft 4, so that the pulley Since the belt B is pressed against the pulley 8, the belt B is constantly fed between the tension roll 20 and the pulley 8, and the belt B can be effectively prevented from coming off the pulley 8.

Also, if, for example, the belt B floats or rides on the pulley 8, the teeth Bl, B, of the belt B.

When the teeth 8a, 3a, . . . of the pulley 8 are not meshed normally, the tension roll 20 moves upward from the reference position in the vertical direction due to the upward displacement of the belt B. , the slider 17 and pin 22 integrated with the tension roll 20 are displaced upward, and the upper limit switch 23 is turned on. On the other hand, when the belt B shifts in the axial direction of the main shaft 4 and comes off the pulley 8, the tension roll 20 moves downward from the reference position by the thickness of the belt B, so that the slider 17 and The downward displacement of the pin 22 turns on the lower limit switch 24. The motor 6 is stopped by the ON signals of these limit switches 23 and 24, and the measurement of the number of teeth on the belt B is interrupted, and a buzzer, lamp, etc. are used to warn of this. Therefore, it is possible to reliably detect misalignment of the belt B during feeding.

As shown in FIG. 7, when the end of the belt B passes between the pulley 8 and the tension roll 20 as the belt B is fed, the tension roll 20 moves downward from the normal reference position in the same way as described above. Therefore, the lower limit switch 24 is turned on, the motor 6 is stopped by the signal from this switch 24, and the measurement of the number of teeth on the belt B is completed.

At that time, the circular hole 11°11 in the counting board 10,
... are provided in the same number as the teeth 8a, 8a, ... of the pulley 8, so that the first proximity sensor 1
The total number of circular holes 11, 11°, . Therefore, the belt B
The value displayed on the counter 31 at the time when the end of the belt disengages from the pulley 8 indicates the number of teeth of the belt B. Therefore, it is possible to automatically measure the number of teeth of the belt B with a simple configuration. can.

Also, a rotating member 7 consisting of the pulley 8 and the counting plate 10
is removable from the main shaft 4, so when the type of belt B changes, it is only necessary to replace it with the rotating member 7 that corresponds to the type of belt B. Even if there are many types of belt B, it is possible to The number of teeth on belt B can be measured at will.

Finally, a specific example by the present inventor will be explained. The belt to measure the number of teeth is about 50mm wide.

This is an open-end long urethane synchronized belt with a thickness of 2.30 mm. The length of the rotating member pulley that corresponds to this belt is 105 mm, and the number of teeth is 30.
The outer diameter of the counting board was 150 mm.

When the number of teeth on the belt was measured using such a measuring device, the value displayed on the counter when the motor stopped at the end of the belt was "100 teeth." When the number of teeth on the belt was checked, it was found to be ``100 teeth,'' and it was therefore confirmed that the measurement could be made without error using a total measurement device.

In the process of measuring the number of teeth on a long synchronized belt,
Comparing the time taken to measure the number of teeth on a belt manually with the time taken to measure the number of teeth using the measuring device of the present invention,
It has been found that by using the measuring device, the measuring time can be reduced by about 80% compared to the conventional method, and a significant reduction in the number of man-hours can be achieved.

(Effects of the Invention) As explained above, according to the invention of claim (1), a rotating member consisting of a pulley that meshes with the belt and a tally plate having the same number of parts to be measured as the tooth parts of the pulley is driven. The number of teeth of the belt is measured by the total number of parts to be measured that pass through a predetermined position when the rotating member is rotated by the driving means with the belt meshed with the pulley. By doing this, it is possible to automatically measure the number of teeth of many types of belts with a simple device configuration, improve and maintain belt quality through accurate measurement of the number of teeth, and reduce inspection man-hours. can.

According to the invention of claim (2), by providing a tension roll that presses the belt wound around the pulley and a detection means that detects the displacement of the tension roll from the reference position, the belt can be pressed against the pulley. In addition to being able to accurately mesh the belt, it is also possible to detect abnormality in belt meshing, the end of belt feeding, etc., and the number of teeth on the belt can be measured even more accurately.

[Brief explanation of the drawing]

1 to 7 show one embodiment of the present invention, in which FIG. 1 is a front view of the belt tooth number measuring device, FIG. 2 is a side view of the same, FIG. 3 is a front view of the rotating member, and FIG. The figure is a cross-sectional view taken along the IV-TV line in Fig. 3, Fig. 5 is a side view showing the state when the rotating member is installed, Fig. 6 is a front view showing the state at the start of measurement, and Fig. 7 is the end of the measurement. FIG. 1...Base 3...Base 4...Main shaft 6...Motor (driving means) 7...Rotating member 8...Pulley 8a...Tooth portion 10...Tally plate 11 ... Circular hole (part to be measured) 13 ... Proximity sensor (detection means) 15 ... Belt regulation mechanism 18 ... Support arm 20 ... Tenyon roll 21 ... Movement amount detection mechanism 2324 ... Limit switch 30, operation panel 3, counter B, belt B1...teeth

Claims (2)

[Claims] (1) A tooth number measuring device for measuring the number of teeth of a belt having teeth, which comprises: a main shaft rotatably supported by a base and rotationally driven by a driving means; a main shaft removably supported by the main shaft; A pulley having teeth on the outer periphery that mesh with the pulley, and a part to be measured that is rotatably provided on the pulley and has the same number of teeth of the pulley at circumferential positions and is arranged concentrically corresponding to the teeth of the pulley. a rotating member consisting of a counting board; and a rotating member attached to the base at a detection position corresponding to the radial position of the part to be measured on the counting board, and the part to be measured passes through the detection position as the counting board rotates. A belt tooth number measuring device comprising a part to be measured detecting means for detecting this, and a counting means for receiving an output of the part to be measured and counting the number of parts to be measured that have passed the detection position. (2) A support arm supported movably on a base along a plane passing through the axis of the main shaft, and supported rotatably on the support arm with a rotation axis parallel to the main shaft, and wrapped around a pulley of a rotating member. and a tension roll biased to press the outer peripheral surface of the belt, and a reference for the tension roll when the teeth of the belt are normally engaged with the teeth of the pulley. 2. The belt tooth number measuring device according to claim 1, further comprising roll displacement detection means for detecting displacement of the tension roll from its position.