JP5525145B2 - Coin conveyor belt - Google Patents

Description

  The present invention relates to a coin transport belt used in, for example, a coin sorter.

When an article such as a coin is conveyed by a belt, a conveyance belt (hereinafter referred to as a belt with a back protrusion) provided with a protrusion or a crosspiece on the back of the belt opposite to the toothed surface is widely used. In the case of a thermoplastic urethane belt, such protrusions and crosspieces are formed in a spot-like manner on a predetermined portion on the back surface of the belt. It is attached by fusing. In contrast, in the case of a rubber belt, it is formed by polishing the back surface of the belt, and in the case of a cast-type thermosetting urethane belt, it can be formed by integral molding with a mold, so that it is easy to manufacture and inexpensive. The above-described belt with a rear protrusion has an advantage that it is generally easy to manufacture.
The present applicant, as Patent Document 1 (Japanese Patent No. 3588480), is a conveyor belt having a toothed surface provided with a plurality of tooth portions meshing with a pulley on a thermosetting urethane belt body, and each tooth portion. Are extended in the belt width direction with an interval in the belt length direction, and at least one of the tooth height dimension and the tooth length dimension is greater than the other tooth parts at a certain pitch among these tooth parts. A large-sized tooth portion is also provided, and a coin transport belt provided with a locking plate on the side surface of the large tooth portion for locking and transporting coins during belt travel has been proposed.

Japanese Patent No. 3588480

  An object of the present invention is to provide a coin transport belt in which a change supply mechanism using a coin transport belt has improved compatibility with downsizing and complication of a transport path. Due to the arrangement of other equipment inside the change machine, the design for hanging the coin conveyor belt has become severer, and the rear idler pulley is required to bend 90 ° or more, and the influence of reverse bending stress is greater than before. So we made improvements. Specifically, the present invention provides a coin transport belt that can maintain the coin transport function and exhibit durability against an increase in the number of bends due to an increase in the number of pulleys.

The present invention focuses on the relationship between the rear idler pulley, which has a large effect on the shape and durability of the large tooth part, especially with respect to the coin conveyor belt, as the equipment such as change machines becomes more compact and complicated. A miniaturized coin conveyor belt that achieves the desired durability has been completed.
The main configuration of the present invention is as follows.

(1) A conveyor belt having a toothed surface provided with a plurality of tooth portions meshing with a pulley in a thermosetting urethane belt body, wherein each tooth portion is spaced apart in the belt length direction. Extending in the width direction, a large tooth portion is provided in which at least one of the tooth height dimension and the tooth length dimension is set to be larger than the other tooth portions at a certain pitch among these tooth portions. on a side face of the large teeth, locking plate is provided for conveying engaged coins at the belt running in the coin conveying belt bent Ru stretched on both sides of the belt,
The locking plate is formed in a push pin shape having a pin portion, and a pin hole extending in the width direction is formed in the large tooth portion,
A coin transport belt which is attached to a side surface of a large tooth portion by inserting a pin portion of the locking plate into the pin hole, and among the shape elements of the large tooth portion, a thickness t of the bottom portion, a pitch line Tooth height H, tooth height h, root R, width W from the rear idler pulley diameter D where t ≧ 0.6 mm and the diameter is less than 30 mm , t / D ≦ 0.034 and H / D ≦ 0.12 and h / D ≦ 0.096 and W / D ≦ 0.174 and R / D> 0.02. The coin transport belt is characterized by a stress of 5 MPa or less at a rear idler pulley diameter D30 mm .

( 2 ) The diameter d of the pin hole is smaller than the diameter a of the pin portion of the locking plate, and the pin hole diameter d and the pin diameter a are d / h ≧ 0.233, a with respect to the tooth height h. It is /h>=0.396, The coin conveyance belt as described in (1) characterized by the above-mentioned.

( 3 ) The coin conveying belt according to ( 2 ), wherein the pin portion of the locking plate is threaded, and the locking plate is attached to the side surface of the tooth portion by screwing the pin portion into the pin hole. .

( 4 ) The pin hole is formed to penetrate the large tooth portion, and protrudes from the tooth side surface opposite to the insertion side of the pin portion at the tip of the pin portion of the locking plate and from the diameter of the pin hole. The coin conveying belt according to ( 2 ) or ( 3 ), wherein a locking portion that is formed in a large diameter and is locked to the side surface of the tooth portion is formed.

( 5 ) The toothed surface is formed with a recess partly communicating with the pin hole, and the pin part has a diameter larger than the diameter of the pin hole and the edge of the communication part with respect to the pin hole of the recess. The coin conveyance belt according to any one of (1) to ( 3 ), wherein a locking portion to be locked is formed.

( 6 ) The coin conveying belt according to ( 5 ), wherein the concave portion is configured to engage with a belt meandering prevention flange formed on the pulley.

( 7 ) The pin hole is formed through the large tooth portion, and the tip of the pin portion of the locking plate is threaded and protrudes from the side surface of the tooth portion opposite to the insertion side of the pin portion. The coin transport belt according to ( 3 ), wherein a nut is screwed onto the coin transport belt.

( 8 ) The coin transport belt according to any one of (1) to ( 7 ), wherein the pin portion of the locking plate and the pin hole of the large tooth portion are inserted through an adhesive.

The present invention can provide a coin transport belt that can maintain the durability while maintaining the operational effects of the invention previously proposed as Patent Document 1, and further adapting to the downsizing and complication of a change machine and the like.
In order to cope with downsizing of a change machine and the like, it is necessary to reduce the tooth portion of the belt that meshes with the downsizing of the forward pulley. The thickness of the urethane layer that covers the cord (core wire) is formed on both sides of the large tooth part to prevent crack damage on both sides of the tooth base. Since the bending distortion increases when traveling and causes the root crack of the large tooth portion, the present invention specifies a shape of the large tooth portion so that the coin transport belt can cope with a small size without causing a failure such as a crack. Realized.
In particular, in order to realize complicated wrapping, tight back bending is required, and the reverse idler pulley for reverse bending that has a smaller diameter causes large teeth to bend and stress concentrates, resulting in a high risk of breakage. Therefore, paying attention to the relationship with the rear idler pulley, a durable coin transport belt could be realized. In the present invention, it is possible to provide a coin transport belt that can be applied to a small-diameter pulley of less than 30 mm and a pulley having a diameter of 25 mm.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a coin transport belt B according to a first embodiment of the present invention.
This coin transport belt B is used for transporting coins in an automatic change machine, a coin sorter, or the like. 1 is, for example, a belt body formed of thermosetting urethane or the like, and is formed between a large tooth portion 2 formed at a constant pitch on the toothed surface and these large tooth portions 2 and 2. It is composed of tooth portions 3, 3,. Reference numeral 7 denotes a locking plate for locking and conveying coins on the side surface of the large tooth portion 2 during belt travel. A pin-shaped locking plate 7 having a pin portion 7a is provided, and a pin hole 2a penetrating in the belt width direction is provided in the large tooth portion 2 formed at a constant pitch, and the locking plate 7 is provided in the pin hole 2a. The locking plate 7 is inserted into the tooth portion 2 by inserting the pin portion 7a. Since the belt B has a configuration in which the locking plate 7 is attached to the side surface of the large tooth portion 2, it is physically impossible to provide a meandering prevention flange on the end face of the pulley meshing with the belt B. The prevention flange is provided at any position in the width direction of the pulley, and 5 corresponds to the flange to engage with the flange provided in the pulley width direction to prevent meandering in this case. A concave portion for preventing meandering of the belt formed at a position where the belt is meandering, 6 is a convex portion for preventing meandering of the belt formed at a position corresponding to the corresponding flange when the belt is driven rearward.
FIG. 2 is a partially enlarged view of the coin transport belt.

FIG. 3 shows an embodiment of the present invention in FIG. 3 (a) and FIG. 3 (b) shows a conventional example of the shape near the large tooth portion. In the present embodiment, the height of the large tooth portion is reduced, the portion continuing to the tooth bottom of the large tooth portion is smoothed as a large curve R, and the thickness t of the tooth bottom portion existing on both sides of the large tooth portion is set to a normal tooth. It is larger than the tooth bottom part. Around the reference pitch line is a wire (cord), the height of the large teeth 2 and H, the height of the large teeth and h ₁ from the normal tooth bottom of the teeth 3, both sides of the large teeth The height of the large tooth from the root of the tooth is h, the radius of the root of the large tooth is R, and the horizontal distance between the intersection of the perpendicular bisector of both ends of the root R and the root R is large The tooth width W of the portion, the diameter of the pin hole 2a for inserting the pin provided on the large tooth portion is d, and the minimum diameter of the pin portion 7a is a. When the thickness from the pitch line to the normal tooth bottom is represented by t ₁ , t ₁ = H−h ₁ . The thickness t of the tooth bottom part on both sides of the large tooth part is represented by Hh = t.
In the conventional example shown in FIG. 3B, it can be seen that t = t ₁ , H is large, R is small, and a tight curve is drawn. On the other hand, in the embodiment of the present invention shown in FIG. 3A, H is made small, t> t _1, and R is made large to make it gentle. The diameter d of the pin hole is a small diameter, the thickness around the pin hole is secured, and the holding strength is secured. By designing in this way, the large tooth portion 2 can be made smaller and the stress concentration generated at the curved portion R of the root portion of the large tooth portion 2 can be reduced while ensuring sufficient pin holding strength. Thus, it is possible to prevent damage and ensure durability.

  FIG. 7 shows a pulley C with which the coin conveying belt according to the embodiment is engaged, and this pulley C has a groove 12 having a round cross section 12 and a groove 13 as a groove. The large tooth portion 2 of the belt A and the tooth portion 3 are also meshed with the groove portion 13 so that the belt travels.

  FIG. 4 shows an example of the fixing structure of the locking pin 7 a of the locking plate 7. A locking portion 9 is integrally formed in the middle of the pin portion 7a, and the locking portion 9 is locked to the pin hole 2a. As shown in FIG. 5A, the locking plate includes a locking portion 9 at a position having a predetermined dimension from the tip of the pin portion 7a. The position of the locking portion 9 is formed on the pulley. It is set corresponding to the opening position with respect to the pin hole 2a of the concave strip portion 5 with which the flange for preventing meandering is engaged. Further, the shape of the locking portion 9 includes a flat cylindrical columnar portion 9a and a truncated cone-shaped conical portion that is formed on the lower side of the cylindrical portion 9a and is inclined toward the inner diameter side toward the tip of the pin portion 7a. 9b is integrally formed. On the other hand, the opening portion of the concave portion 5 with respect to the pin hole 2 a is formed in a groove shape corresponding to the shape of the locking portion 9.

  In the state where the locking portion 9 is locked to the pin portion 7a, the end surface of the columnar portion 9a of the locking portion 9 is locked to the edge of the opening portion of the concave portion 5 with respect to the pin hole 2a. This effectively prevents the pin portion 7a from coming off from the pin hole 2a. Moreover, in such a structure, since the recessed part 5 which is the existing site | part is used effectively, the latching | locking part 9 is latched, Therefore It is necessary to form the new recessed part 5 for this latching Therefore, it is possible to simplify the manufacturing process of the belt.

  FIG. 5 shows an example of the shape of the pin portion of the locking plate. FIG. 5A shows an example in which one locking portion 9 is provided. In FIG. 5B, the diameter of the pin 7a is reduced, a plurality of step portions are provided, and the locking portion 9 at the foremost portion is enlarged to ensure a locking force. FIG.5 (c) shows a prior art example and has a thicker pin diameter.

<Example of fixing structure>
The pin hole 2a needs to be made small in order to secure a sufficient thickness in accordance with the fact that the large tooth portion is lower than the conventional one, but on the other hand, there is a possibility that sufficient holding force cannot be obtained. As a result of pursuing the relationship with the thickness and shape of the inserted pin, the pin hole diameter d is 0.233 or more with respect to the height h of the large tooth portion, while the minimum pin diameter a is the large tooth 0.396 or more is desirable for the height h of the portion. Further, in particular, the pin portion 7a is provided with a plurality of wedge-shaped stepped portions for retaining, and the configuration in which the pin portion 7a is locked to the concave portion 5 provided for preventing meandering is firmly fixed according to the insertion operation of the pin portion. This is desirable because the joining is completed.
FIG. 6A shows an example of a fixing structure using the pin shown in FIG. The small step portion is in close contact with the peripheral wall of the pin hole 2a, and further, the large step portion is engaged with the end portion of the concave strip portion to perform a retaining function.
FIG. 6 (b) is obtained by inserting the pin portion 7a with an adhesive into the pin hole 2a, and the pin portion 7a of the locking plate 7 and the pin hole 2a of the tooth portion 2 are adhesive layers. 8 is inserted.

  In the example shown in FIG. 6 (c), a locking portion 9 larger than the diameter of the pin hole of the tooth portion is formed at the tip of the pin portion 7a of the locking plate 7, and the pin 7 is not removed from the pin hole 2a. As described above, the pin is prevented from coming off.

  In the example shown in FIG. 6 (e), the pin portion 7a of the locking plate 7 is threaded to form the screw portion 10, and the pin 7a is inserted into the pin hole 2a of the tooth portion by screwing. This is intended to prevent the pin from coming off.

  In FIG. 6 (d), the tip of the pin 7 a of the locking portion 7 is fixed to the nut 11, and the effect of preventing the pin from coming off is aimed by stopping the nut 11.

  These fixing structures may be combined to improve the mounting strength of the locking plate.

<Action>
As illustrated in FIG. 12, the coin transport belt of the present invention is used by being wound around a pulley so as to be bent in a complicated manner. In this coin transport belt, a locking plate as a protrusion for locking and transporting a coin is attached to the large tooth portion side formed at a constant pitch of the toothed surface, not a tooth portion of a normal size. Therefore, the strength required for the tooth portion and the mounting area of the locking plate can be increased. The belt body is made of thermosetting urethane, and the locking plate is formed in the shape of a push pin having a pin portion, and a pin hole is formed in a large tooth portion, and the pin portion of the locking plate is a pin. The locking plate is inserted by inserting it into the hole. The tooth part used as a pin attachment part is made large. Since the locking portion larger than the diameter of the pin hole of the tooth portion is formed at the tip of the pin portion of the locking plate, the locking portion has an effect of preventing the pin from being removed after insertion.
A normal belt is provided with a meander-preventing flange on a pulley, but since this coin transport belt is provided with a locking plate for pressing coins on the side surface, such a flange cannot be provided. In this coin transport belt, a part of the tooth portion is notched, and the concave portion is continuously provided in the longitudinal direction, and is provided as a guide engaging portion with the guide protrusion. This concave strip portion can be used as a concave portion for locking the pin portion. Since the pin hole provided in the large tooth part is formed with a diameter smaller than the diameter of the pin part of the locking plate, it becomes difficult for the pin part of the locking plate to be easily removed from the pin hole after the locking plate is inserted. It has an action to prevent the omission.
Further, when the pin portion of the threaded locking plate is used, it is inserted into the pin hole by screwing, and therefore, the pinned portion prevents the pin from coming off after the insertion. Furthermore, it is also possible to attach the pin tip of the locking portion and fix it with a nut. Furthermore, the pin portion and the pin hole of the tooth portion can be attached via an adhesive.

In order to apply this type of coin conveyor belt to a further downsized and compact automatic change machine, in particular, in the rear idler pulley M section, the pulley C such as a drive pulley is defined as In contrast, the back side is curved inward and tensile stress is likely to occur on the normal tooth side, but the present invention proposes a structure of a coin transport belt that is durable against a tight reverse curve.
In order to reduce the size, the large tooth portion of the belt needs to be small. The thickness of the urethane layer that covers the cord (core wire) is formed on both sides of the large tooth part to prevent crack damage on both sides of the tooth base. Since the bending distortion increases when traveling and causes the root crack of the large tooth portion, the present invention specifies a shape of the large tooth portion so that the coin transport belt can cope with a small size without causing a failure such as a crack. Realized.
In particular, the back idler pulley for reverse bending is required to have a small diameter, and the back pulley is increased in angle, so that a tight bend such as 90 ° is required. Since there is a high risk of breakage, focusing on the relationship with the rear idler pulley, a durable and compact coin transport belt was set. In the present invention, it is possible to provide a coin transport belt that can be applied to a small-diameter pulley of less than 30 mm and a pulley having a diameter of 25 mm.

Specifically, this is as described above with reference to FIG.
That is, with respect to the shape in the vicinity of the large tooth portion 2, the height h of the large tooth portion 2 is reduced, the portion continuing to the root of the large tooth portion is smoothed as a large curve R, and the teeth existing on both sides of the large tooth portion The thickness of the bottom t is made larger than the thickness t _{1 of the} bottom of the normal tooth. With reference to the pitch line that is the center of the core wire (cord), the height of the large tooth portion is H, the height of the large tooth portion from the root of the normal tooth portion is h _1, and both sides of the large tooth portion 2 are The height of the large tooth from the root is set to h, the radius of the root of the large tooth is R, and the horizontal distance between the intersection of the perpendicular bisector of both ends of the root R and the root R is the large tooth. , The diameter of the pin hole 2a for inserting the pin provided on the large tooth portion is d, and the minimum diameter of the pin portion 7a is a. When the thickness from the pitch line to the normal tooth bottom is represented by t ₁ , t ₁ = H−h ₁ . The thickness t of the tooth bottom part on both sides of the large tooth part is represented by Hh = t. In the conventional example shown in FIG. 3B, it can be seen that t = t ₁ , H is large, R is small, and a tight curve is drawn. On the other hand, in the embodiment of the present invention shown in FIG. 3A, H is made small, t> t _1, and R is made large to make it gentle. The diameter d of the pin hole is a small diameter, the thickness around the pin hole is secured, and the holding strength is secured. By designing in this way, the large tooth part is made smaller, while ensuring sufficient pin retention strength, the stress concentration generated at the root part of the large tooth part is reduced and the damage is suppressed by bending back. And durability can be ensured.

When this idea is applied concretely, it is particularly influenced by the curvature of the rear idler pulley diameter D, so that the present invention can further pursue and propose a specific means of realization. The elucidation will be described in detail in the evaluation test.
The present invention proposes a standard for prescribing the shape of the large tooth portion based on the minimum diameter of the rear idler pulley and securing the locking plate.
Design the shape of the large tooth part so that the thickness t of the bottom part, the tooth height H from the pitch line, the tooth height h, the root R, and the width W satisfy the following relationship with the diameter D of the rear idler pulley. is important. t ≧ 0.6mm, with a shape that satisfies the relationship of t / D ≦ 0.034, H / D ≦ 0.12, h / D ≦ 0.096, W / D ≦ 0.174, and R / D> 0.02 with respect to the rear idler pulley diameter D design.
Furthermore, the diameter d of the pin hole is formed smaller than the diameter a of the pin portion of the locking plate, and the pin hole diameter d and the pin diameter a are d / h ≧ 0.233, a / h ≧ with respect to the tooth height h. By setting it to 0.396, it is possible to realize strong fixation.
As a result, the present invention can realize the durability that can sufficiently cope with the small diameter of the pulley diameter D of less than 30 mm and the reverse bending of 90 °.

[ Evaluation test ]
For example, as shown in FIG. 12, the coin transport belt is bent and used. Since the pulley C around which a normal tooth side such as a driving pulley is wound is designed to have a shape capable of accommodating a large tooth portion, stress concentration associated with traveling hardly occurs. On the other hand, in the rear idler pulley M that is bent in the reverse direction in which the back side of the coin conveyor belt is bent, stress concentration is likely to occur in the large tooth portion, which causes damage. Therefore, more than 10 years have been set as a design standard for durability that can be used without failure of an automatic change machine or the like. It has been found that it is important for the durability to set the stress to 5 MPa or less during reverse bending by experience and a separate acceleration test.

<FEM analysis>
Various coin conveyor belts were prototyped, and the back side was hung around two back idler pulleys for FEM analysis. Table 1 shows the evaluation.
An example of FEM analysis of the vicinity of the large tooth portion is shown in FIG. The back idler pulley is an example using a diameter of 25 mm. FIG. 11B shows that in the conventional example corresponding to Test Example 2, the stress is concentrated at the base of the large tooth portion and a large strain is generated. On the other hand, FIG. 11A corresponding to Test Example 10 shows that although a weak stress concentration is recognized on the back surface side, a stress concentration that is a problem is not recognized on the large tooth side.

FIG. 8 shows the shapes of Test Example 2 and Test Example 10 and shows the maximum principal stress by FEM analysis, which shows 6.052 MPa and 4.957 MPa, respectively, and the stress can be reduced by 18% to 82%. I understand.
FIG. 10 is a graph showing FEM analysis results of Test Examples 1 to 3 using a conventional coin conveyor belt and Test Examples 9 to 11 using a prototype type C coin conveyor belt. It can be seen that the trial type C can reduce the maximum principal stress by about 1 MPa for each diameter pulley, and the reduction effect is greater as the pulley diameter is reduced.

<Stress concentration test>
Using the large tooth portion shown in FIG. 3 as a basic shape, five other types of the conventional example were prototyped, and the test was carried out with the back idler pulley diameter of 20 mm, 25 mm, and 30 mm on the back of the belt. Table 1 shows the specifications and stress measurement results of the six types of coin conveyor belts.
As a result, it can be seen that the smaller the rear idler pulley diameter, the greater the stress due to bending, and the larger the rear idler pulley, the easier the design. When the diameter of the rear idler pulley is 30 mm, the conventional coin transport belt slightly exceeds 5 MPa, but when it is 25 mm or less, it becomes 6 MPa or more.
From the viewpoint of small size, it is required to reduce the tooth height h of the large tooth portion as much as possible. From the viewpoint of preventing breakage due to reverse bending, for example, t that affects the cover thickness of the core wire is increased to expose the core wire. The general countermeasure is to control the situation. However, belt type A (Test Examples 4 to 6) in which the height H from the pitch line to the tooth tip is simply kept and t is increased cannot exceed the target by taking 6 MPa or more. Even if the cover thickness is increased, durability cannot be ensured.

As a result of pursuing a shape that can reduce concentrated stress by reducing the increase in t, which is the cover of the core wire, while suppressing the belt tip height H, the root R is increased to make the shape of the large tooth portion gentle. Therefore, we pursued measures to avoid stress concentration.
As a result, by setting the root R to 1.6 mm, the tooth tip height H to 3.0 mm or less, and the cover thickness equivalent t of the core wire to 0.60 mm, there is a combination that can be less than 5 MPa even with a rear idler pulley diameter of 30 mm or less. I was able to find out.
Furthermore, it is necessary to attach a pin of a locking plate to the large tooth portion to ensure a strong joint. The relationship between the diameter and shape of the pin and the size of the hole provided in the large tooth was examined. It has been found that the pin diameter can be set to about 60% of the conventional example and the hole size can be set to about 70%.
In the coin conveyor belt of the present invention, since each element influences each other, it is difficult to simply set a defining factor, but the influence of the diameter of the rear idler pulley that performs reverse bending is large. As a standard, a numerical value that can be cleared is set. Further, the fixing element was defined based on the tooth height h that affects the thickness of the insertion hole of the locking pin.

  The results are shown in Table 2. As a result, t ≧ 0.6 mm and t / D ≦ 0.034, H / D ≦ 0.12, h / D ≦ 0.096, W / D ≦ 0.174, and R / D> 0.02 with respect to the rear idler pulley diameter D. When the shape satisfies the relationship, the stress concentration can be 5 MPa or less.

<Example of fixing structure between locking plate and belt>
From the FEM analysis result, in order to relieve the stress of the root R, the volume of the pin part is reduced. In order to achieve both fatigue and detachability, the compression rate of urethane (the pin diameter relative to the pilot hole diameter) is preferably the compression rate of the conventional shape, and is equivalent. FIG. 9 shows examples of hole and pin shapes. The belt volume R indicates the outer diameter of the large tooth portion shown in FIG. The pin was provided with a wedge-shaped bulge in four steps, one of which was a large bulge. This large bulge part will be engaged with the recessed part of a large sized tooth part. The pin hole diameter d is smaller than the diameter a of the pin portion of the locking plate, and the pin hole diameter d and the pin diameter a are d / h ≧ 0.233 and a / h ≧ 0.396 with respect to the tooth height h. By doing so, it is possible to realize strong fixation.

The perspective view of the coin conveyance belt which concerns on an Example. The elements on larger scale of a coin conveyance belt. The shape in the vicinity of the large tooth portion, an example of the present invention is shown in (a), and a conventional example is shown in (b). Example of fixing structure of locking pin 7a of locking plate 7 The example of the shape of the pin part of a locking plate is shown. (a) Example, (b) Example, (c) Conventional example. Examples of pinned fixing structures are shown in (a) to (e). The enlarged front view which abbreviate | omitted a part of pulley which meshes with the coin conveyance belt which concerns on the Example of this invention. Comparison of shape of large teeth Comparison of pin shapes The graph which shows the stress measurement result of the coin conveyance belt of a present Example and a prior art example Reverse bending FEM analysis diagram (stress concentration schematic diagram). (a) This example, (b) Conventional example. Example of using coin transport belt

Explanation of symbols

B Coin transport belt C Pulley M Rear idler pulley 1 Belt body 2 Large tooth 2a Pin hole 3 Tooth 7 Locking plate 5 Recess 7a Pin 9 Locking

Claims (8)

A thermosetting urethane belt main body having a toothed surface having a plurality of teeth meshing with a pulley, each tooth being spaced in the belt length direction and spaced in the belt width direction. A large-sized tooth portion in which at least one of the tooth height dimension and the tooth length dimension is set larger than the other tooth portions is provided for each fixed pitch among these tooth portions. the side surface of the teeth, the locking plate is provided for conveying engaged coins at the belt running in the coin conveying belt bent Ru stretched on both sides of the belt,
The locking plate is formed in a push pin shape having a pin portion, and a pin hole extending in the width direction is formed in the large tooth portion, and the pin portion of the locking plate is inserted into the pin hole. A coin transport belt attached to the side surface of the large tooth part,
Among the shape elements of the large tooth part, the thickness t of the bottom part, the tooth height H from the pitch line, the tooth height h, the root R, and the width W are t ≧ 0.6 mm and the diameter is less than 30 mm. The shape satisfies the relationship of t / D ≦ 0.034, H / D ≦ 0.12, h / D ≦ 0.096, W / D ≦ 0.174, and R / D> 0.02 with respect to the rear idler pulley diameter D, and the rear idler pulley diameter D30 mm. A coin transport belt characterized by having a stress of 5 MPa or less . The diameter d of the pin hole is smaller than the diameter a of the pin portion of the locking plate, and the pin hole diameter d and the pin diameter a are d / h ≧ 0.233, a / h ≧ with respect to the tooth height h. The coin transport belt according to claim 1 , wherein the coin transport belt is 0.396. The coin conveying belt according to claim 2 , wherein the pin portion of the locking plate is threaded, and the locking plate is attached to the side surface of the tooth portion by screwing the pin portion into the pin hole. The pin hole is formed through the large tooth part, and protrudes from the tooth part side opposite to the insertion side of the pin part at the tip of the pin part of the locking plate and has a diameter larger than the diameter of the pin hole. 4. The coin transport belt according to claim 2, wherein a locking portion is formed to be locked to the side surface of the tooth portion. The toothed surface is formed with a recess partly communicating with the pin hole, and the pin part has a diameter larger than the diameter of the pin hole and engages with the edge of the communication part with respect to the pin hole of the recess. The coin conveyance belt according to any one of claims 1 to 3, wherein a locking portion is formed. 6. The coin transport belt according to claim 5 , wherein the concave portion is configured to engage with a belt meandering prevention flange formed on the pulley. The pin hole is formed to penetrate the large tooth part, and the tip of the pin part of the locking plate is threaded and protrudes from the tooth part side opposite to the insertion side of the pin part. The coin transport belt according to claim 3, wherein: Coin conveying belt according to any one of claims 1 to 7, the pin hole of the pin portion and the large teeth of the securing plate, characterized in that it is inserted through the adhesive.

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