JP5203799B2 - Mold for belt manufacturing - Google Patents

Description

  The present invention relates to a belt manufacturing mold, and more particularly to a mold for manufacturing a belt by pressing a belt material from an inner member to an outer member during vulcanization.

In order to manufacture a belt such as a V-ribbed belt, it is known to use a cylindrical drum member or the like (see, for example, Patent Documents 1 and 2). In this case, the belt material wound around the inner cylindrical member is pressed against the outer cylindrical member using high-pressure air or the like in the vulcanization process. The belt sleeve thus obtained is cut into a predetermined width, and a belt having ribs corresponding to the shape previously provided on the inner peripheral surface of the outer cylindrical member is manufactured (hereinafter, this manufacturing method is referred to as molding). Ded manufacturing method).
JP 2003-340934 A JP 2005-516790 Gazette

  In the conventional molded manufacturing method, a mold including inner and outer cylindrical members is used only for manufacturing one type of belt. For this reason, even when manufacturing a belt having a slightly different rib shape or length, a new mold is required. The outer mold has a complicated structure because it requires a heating mechanism for vulcanizing the belt material, and requires a long period of time and a large amount of cost to manufacture. Therefore, in this case, it is difficult to respond flexibly and quickly.

  That is, since it takes a long time to manufacture a new mold, the start of manufacturing the belt is delayed, or the cost is increased due to the manufacture of a relatively expensive mold. In particular, this problem becomes prominent when a new mold is manufactured in order to manufacture a small number of belts such as prototypes.

  Therefore, an object of the present invention is to supply a belt manufacturing mold capable of easily manufacturing various types of belts.

  The belt manufacturing mold of the present invention is a belt manufacturing mold for manufacturing a belt from a belt material, and an inner mold on which the belt material is wound around the outer peripheral surface, and an outer peripheral surface side of the inner mold. A molding die having an inner peripheral surface arranged and having an inner peripheral surface against which belt material is pressed during vulcanization, and an outer die disposed on the outer peripheral surface side of the molding die and holding the molding die; The outer mold is a separate body, and the molding mold can be exchanged.

  In the belt manufacturing mold, any of a plurality of molding dies having different inner peripheral surface shapes can be selectively used, or a plurality of moldings having a cylindrical molding mold and different inner diameters. Preferably any of the molds can be used selectively.

  The molding die is, for example, a cylindrical shape. In this case, it is preferable that the molding die can be divided into a plurality of molding die rings having different inner peripheral surfaces along the axial direction of the molding die. Moreover, it is preferable that a plurality of inner molds and a plurality of molding dies can be selected one by one in combination. In this case, it is more preferable that the inner die and / or the molding die are cylindrical, and a plurality of inner dies having different outer diameters and / or a plurality of molding dies having different inner diameters can be used.

  The outer mold is preferably provided with a temperature adjustment mechanism for vulcanizing and cooling the belt material. In this case, for example, the temperature adjustment mechanism includes a pipe through which a fluid for temperature adjustment passes. The outer mold is, for example, a cylindrical shape. In this case, it is preferable that the pipe is disposed along the circumferential direction of the outer mold.

  The outer mold includes an inner outer mold that holds the molding mold and an outer outer mold that is disposed on the outermost side of the belt manufacturing mold. The inner outer mold and the outer outer mold are separated from each other. It is preferable that it is a body.

  The belt manufactured by the belt manufacturing mold is, for example, a V-ribbed belt.

  ADVANTAGE OF THE INVENTION According to this invention, the metal mold | die for belt manufacture which can manufacture various kinds of belts easily is realizable.

  Hereinafter, an embodiment of a mold for manufacturing a belt in the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a belt manufacturing mold in use in the first embodiment. FIG. 2 is a perspective view showing the belt manufacturing mold in a state in which the respective members are separated from each other in the present embodiment.

  The belt manufacturing mold 10 is used for manufacturing a belt such as a V-ribbed belt from a belt material. The belt manufacturing mold 10 includes an inner mold 12, an inner outer mold 18, and an outer outer mold 20. A molding die 16 (see FIG. 2) is disposed between the inner die 12 and the inner outer die 18. The inner mold 12, the molding mold 16, and the outer outer mold 20 are all cylindrical, and the main body 18B of the inner outer mold 18 is also cylindrical. As shown in FIG. 1, these members are used in a state where they are combined with each other in a concentric manner around the central axis 12 </ b> A of the inner mold 12 (hereinafter referred to as a “used state”).

  In use, the molding die 16 is arranged around the outer peripheral surface 120 of the inner die 12, and the inner outer die 18 is arranged around the outer peripheral surface 16O of the molding die 16 (see FIG. 2). . Further, the inner outer mold 18 is configured so that the plurality of columnar members 18P provided on the outer side of the main body 18B of the inner outer mold 18 are in contact with the inner peripheral surface 20I of the outer outer mold 20. It fits into the opening 20M.

  Of these members included in the belt manufacturing mold 10, only the outer outer mold 20 has a bottomed cylindrical shape. For this reason, the molding die 16 is held at a predetermined position by the inner outer die 18 and the outer outer die 20. Note that an appropriate gap is provided between these members in use. Further, the molding die 16 that cannot be visually recognized from the outside in the use state is not shown in FIG.

  The inner outer mold 18 is provided with a pipe 24 (temperature control mechanism) passing through the inside of the columnar member 18P along the outer peripheral surface 18O (see FIG. 2) of the inner outer mold body 18B. The pipe 24 is provided for vulcanizing and cooling the belt material in a vulcanization process described later. Therefore, a heat medium fluid (heating oil, hot water, steam, etc.) for heating the belt material and a refrigerant fluid (cooling oil, cooling water, coolant, etc.) for cooling pass through the inside of the pipe 24.

  This heat transfer fluid enters the introduction pipe 26 from the inlet 26A of the introduction pipe 26 provided on the outer peripheral surface 20O of the outer outer mold 20, and passes through the passage hole 18H (see FIG. 2) provided in the columnar member 18P. It is supplied to the pipe 24. The heat transfer fluid moves along the outer peripheral surface 18O of the inner outer mold main body 18B in the pipe 24, and then is discharged from the outlet 26B of the introduction pipe 26.

  Next, how to use the belt manufacturing mold 10 at the time of manufacturing the belt will be described. FIG. 3 is a cross-sectional view showing a part of the inner die 12 and the molding die 16 cut along a plane passing through the central axis 12A of FIG. 1 in the belt material vulcanization step.

  In the vulcanization process, the belt material 30 including the canvas 32, the core wire 34, the unvulcanized rubber sheet 36, and the unvulcanized compression rubber layer 38 is disposed on the outermost side of the inner mold 12. Is wound around the outer peripheral surface 120 of the jacket 12J. The belt material 30 is heated and pressurized from the inside of the inner mold 12. That is, a high-temperature, high-pressure fluid (oil, water, air, etc.) is fed into the passage 12P between the outer peripheral surface 12C of the metal main body 12B of the inner mold 12 and the inner peripheral surface 12I of the jacket 12J. The With this fluid, the jacket 12 </ b> J provided on the outer periphery of the inner mold 12 is heated and further pushed out toward the outside of the inner mold 12. As a result, as indicated by an arrow A, the belt material 30 is pressed radially from the central axis 12A side toward the inner peripheral surface 16I of the molding die 16 and further heated from the inner die 12 side.

  The heated belt material 30 is pressed against the inner peripheral surface 16I of the molding die 16, and further a temperature suitable for vulcanization from the inner outer die 18 side (see FIGS. 1 and 2) by the heat transfer fluid passing through the pipe 24. When a predetermined time elapses while being heated at, and vulcanized, a belt sleeve (not shown) is molded. Thereafter, a cooling fluid is flowed into the pipe 24 (see FIGS. 1 and 2), and the belt sleeve is cooled. The inner peripheral surface 16I of the molding die 16 has a shape corresponding to the pulley surface shape of the belt to be manufactured. For example, a plurality of protrusions 16P for forming ribs are provided. Therefore, in the vulcanized belt sleeve, a rib shape corresponding to the shape of the inner peripheral surface 16I of the molding die 16 is formed. Thereafter, the belt sleeve is cut into a predetermined width, and a V-ribbed belt (not shown) is manufactured.

  In FIG. 3, for the sake of convenience of explanation, the diameter of the inner mold 12 is reduced and the distance between the inner mold 12 and the molding mold 16 is increased. However, in practice, this is suitable for manufacturing a V-ribbed belt. It is adjusted to the diameter and interval respectively.

  FIG. 4 is a perspective view showing a first molding die in the present embodiment. FIG. 5 is a perspective view showing a second molding die in the present embodiment, and FIG. 6 is a perspective view showing a third molding die in the present embodiment.

In the belt manufacturing mold 10 of the present embodiment, the first to third molding dies 161 to 163, which are molding dies having a plurality of different shapes, can be exchanged, that is, any one of these is selective. Can be used. In the inner peripheral surface 161I of the first molding die 161, the protrusion 161P for the rib formation is provided at a predetermined interval _{B 1.} In contrast, in the inner peripheral surface of the second molding die 162 162I (see FIG. 5), at a wide interval _{B 2} than distance _{B 1} in the first molding die 161, the projections of the same shape 162P Is arranged.

  In this manner, the belt manufacturing mold 10 can be assembled in use by using one of the first and second molding dies 161 and 162 that differ only in the distance between the protrusions on the inner peripheral surfaces 161I and 162I. Therefore, two types of V-ribbed belts having different rib intervals can be easily and selectively manufactured using the same belt manufacturing mold 10.

In the first and second molding die 161 and 162, the shape of the protrusions 161P and 162P are different these intervals _{B 1} and _{B 2} be the same, different only in the shape of the protrusions 161P and 162P are The intervals B ₁ and B ₂ are the same, or the shapes of the protrusions 161P and 162P and the intervals B ₁ and B ₂ may be different.

The third molding die 163 (see FIG. 6) has an inner peripheral surface 163I having the same shape as the first molding die 161 (see FIG. 4). That is, a plurality of protrusions 163P has the same shape as the protrusion 161P of the first molding die 161, interval _{B 3} is equal to the distance _{B 1.} However, in the third molding die 163, the distance _{C 3} between the outer peripheral surface 163O and the inner peripheral surface 163I is in the first molding die 161, than the distance _{C 1} between the outer peripheral surface 161O and the inner peripheral surface 161I large. That is, the outer diameter _{E 3} of the third molding die 163, although equal to the outer diameter _{E 1} of the first molding die 161, the inner diameter _{D 3} of the third molding die 163, the first molding die smaller than the inner diameter _{D 1} of the mold 161.

  For this reason, by selecting and using one of the exchangeable first and third molding dies 161 and 163 for the same inner mold 12 (see FIGS. 1 to 3), the same rib can be used. Two types of V-ribbed belts having a shape and different only in thickness, that is, a distance from the pulley engaging surface to the back surface, can be easily and selectively manufactured.

  Also, on the inner mold 12 (see FIGS. 1 to 3) side, a plurality of inner molds having different diameters are prepared, and the thickness of the V-ribbed belt produced by selecting one of these and using it. May be adjusted. Thus, the combination of the inner mold and the molding mold can be selected, that is, a plurality of inner molds including the inner mold 12 and a plurality of molding dies 161 to 163 are combined one by one. The shape of the V-ribbed belt to be manufactured can be easily adjusted.

Note first, third molding die 161 and 163, because it is held by both the same inner outer die 18 (see FIGS. 1 and 2) in the use state, their outer diameter _{E 1} and _{E 3} are equal It has become.

  As described above, by making a plurality of exchangeable molding dies 161 to 163 and the like separate from the inner and outer dies 18 and making them selectively usable, the rib shape and thickness are equal and the lengths are different. A V-ribbed belt can be selectively manufactured. Further, unlike a normal outer mold (not shown), a plurality of molding dies 161 to 163 are separated from the inner outer mold 18 to produce a new type of belt. However, if only a molding die is newly produced, it is not necessary to newly install a complicated inner outer die 18 having a structure including the pipe 24 and the like. For this reason, the manufacturing cost of the belt manufacturing die 10 can be reduced, and a new belt can be quickly manufactured. As described above, when a molding die having a small outer diameter is held by the inner outer die 18, in the state of use (see FIG. 1), for example, a spacer having appropriate heat conductivity is provided around the molding die. (Not shown) is arranged.

  As described above, according to the first embodiment, by replacing the plurality of molding dies 16 with the inner outer dies 18, a plurality of interchangeable plural inner peripheral surfaces 161 </ b> I to 163 </ b> I having different shapes and the like. Any of the first to third molding dies 161 to 163 can be selectively used. For this reason, various belts having different shapes and the like, for example, a V-ribbed belt can be easily manufactured. Furthermore, by making a plurality of inner dies such as the inner dies 12 and the molding dies 16 including the first to third molding dies 161 to 163, etc. separately and freely combining each other However, it is possible to respond flexibly to changes in the belt to be manufactured.

  In this embodiment, if only a plurality of molding dies 16 are prepared, it is not necessary to prepare a set of different dies for each type of belt to be manufactured as in the conventional mold manufacturing method. Reduction is possible, and the production of the designed belt can be started immediately.

  Also, an inner outer mold 18 (see FIGS. 1 and 2) that directly holds the molding mold 16 and an outer outer mold 20 that is disposed on the outermost side in the belt manufacturing mold 10 in use are separated. By doing so, it becomes easy to provide an appropriate clearance between these members, and to attach / detach and adjust the pipe 24 and the like. Furthermore, when the inner outer mold 18 and the outer outer mold 20 are separate, a plurality of inner outer molds 18 having different sizes and shapes of the main body 18B can be exchanged as required. It is also possible to select molding dies 16 having different diameters.

  Hereinafter, the second embodiment will be described. FIG. 7 is a perspective view showing a molding die in the second embodiment.

  In the present embodiment, unlike the first to third molding dies 161 to 163, a cylindrical fourth molding die that can be divided into a plurality of molding die rings 165 to 168 along the axial direction. 164 is used. That is, the fourth molding die 164 can be divided into first to fourth molding die rings 165 to 168 so as to be cut along a plane perpendicular to the central axis. The first to fourth molding die rings 165 to 168 have first to fourth inner peripheral surfaces 165I to 168I (partially not shown) having shapes different from each other. That is, the combinations of the shapes and intervals of the protrusions 165P to 168P for rib formation on the first to fourth inner peripheral surfaces 165I to 168I are different from each other as illustrated.

  Then, any of a fourth molding die 164 and a molding die (not shown) similar thereto, that is, a molding die that can be divided into a plurality of molding die rings having different inner peripheral surface shapes. Is selectively used. In this case, a molding die ring included in a molding die other than the fourth molding die 164 has an inner peripheral surface shape that is different from any of the first to fourth inner peripheral surfaces 165I to 168I. Therefore, the combination is not limited to the illustrated first to fourth molding die rings 165 to 168, and only a part of them can be changed to other molding die rings.

  In the present embodiment using the fourth molding die 164 and the like, the sleeve of the V-ribbed belt formed from the belt material 30 (see FIG. 3) is used as the first to fourth molding die rings 165 to 168. By cutting at a portion corresponding to the boundary line such as the like, a plurality of V-ribbed belts having different rib shapes can be easily manufactured in one vulcanization step.

  In addition, since the pipe 24 (see FIGS. 1 and 2) for adjusting the temperature of the belt material 30 is disposed in parallel to the circumferential direction of the molding die ring 16 and the inner outer die 18, the belt longitudinal direction will be described later. Each region of the sleeve, which is cut along the direction and becomes a different V-ribbed belt, can be heated and cooled evenly.

  As described above, according to the present embodiment, various types of V-ribbed belts can be manufactured by a single vulcanization process by using the belt manufacturing mold 10. Furthermore, by preparing molding die rings other than the first to fourth molding die rings 165 to 168 in advance, many types of V-ribbed belts can be selectively manufactured.

  In any of the embodiments, the belt manufacturing mold 10 is suitable for manufacturing a V-ribbed belt having a plurality of ribs, such as a V-ribbed belt or a V-belt whose pulley engaging surface is not smooth, but the belt manufacturing mold 10 May be utilized for manufacturing other belts, for example, friction transmission belts such as flat belts. This is because even a belt that does not require adjustment of the rib shape is useful in that a belt having different lengths and thicknesses can be easily manufactured by selectively using a plurality of molding die rings 16 having different shapes. .

  The shape of each member is not limited to any embodiment. For example, more types of molding die rings 16 than those exemplified in the first embodiment may be employed, and the molding die rings 16 in the second embodiment molding may be more or less than four. It may be separable into molding mold rings.

It is a perspective view which shows the metal mold | die for belt manufacture of the use condition in 1st Embodiment. It is a perspective view which shows the metal mold | die for belt manufacture in the state in which each member was isolate | separated from each other in this embodiment. It is sectional drawing which shows a part of inner die cut | disconnected by the plane which passes along a central axis, and a shaping die in the vulcanization process of belt material. It is a perspective view which shows the 1st shaping die in this embodiment. It is a perspective view which shows the 2nd shaping die in this embodiment. The perspective view which shows the 3rd shaping die in this embodiment. It is a perspective view which shows the shaping die in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Belt manufacturing die 12 Inner die 12O Outer peripheral surface 16 Molding die 16I Inner peripheral surface 16O Outer peripheral surface 161-164 First-fourth molding die 165-168 First-fourth molding die ring 18 Inner outer mold (outer mold)
20 Outer mold (outer mold)
24 pipe (temperature control mechanism)

Claims (10)

A belt manufacturing mold for manufacturing a belt from a belt material,
An inner mold around which the belt material is wound around an outer peripheral surface;
A molding die disposed on the outer peripheral surface side of the inner mold and having an inner peripheral surface against which the belt material is pressed during vulcanization;
An outer mold that is disposed on the outer peripheral surface side of the molding die and holds the molding die;
The molding die and the outer die and is separate der Rutotomoni, wherein Ri molding die replaceable der, in the outer mold, is temperature control device for vulcanization and cooling the belt material A belt manufacturing mold characterized by being provided . The belt manufacturing mold according to claim 1 , wherein the temperature control mechanism includes a pipe through which a fluid for temperature control passes. The belt manufacturing die according to claim 2 , wherein the outer die is cylindrical, and the pipe is arranged along a circumferential direction of the outer die. A belt manufacturing mold for manufacturing a belt from a belt material,
An inner mold around which the belt material is wound around an outer peripheral surface;
A molding die disposed on the outer peripheral surface side of the inner mold and having an inner peripheral surface against which the belt material is pressed during vulcanization;
An outer mold that is disposed on the outer peripheral surface side of the molding die and holds the molding die;
The molding die and the outer die are separate bodies, and the molding die can be exchanged,
Features and be behenate belt manufacturing mold that any shape of the inner peripheral surface of the plurality of different molding die can be used selectively. Wherein a molding die cylindrical, belt manufacturing mold of claim 1 or claim 4, characterized in that one of the plurality of different molding die inner diameter can be used selectively . A belt manufacturing mold for manufacturing a belt from a belt material,
An inner mold around which the belt material is wound around an outer peripheral surface;
A molding die disposed on the outer peripheral surface side of the inner mold and having an inner peripheral surface against which the belt material is pressed during vulcanization;
An outer mold that is disposed on the outer peripheral surface side of the molding die and holds the molding die;
The molding die and the outer die are separate bodies, and the molding die can be exchanged,
The molding die is cylindrical, in the axial direction of the molding die, be behenate belt manufacturing and characterized in that it is divisible into a plurality of said molding die ring shape is different in the inner circumferential surface Mold. A belt manufacturing mold for manufacturing a belt from a belt material,
An inner mold around which the belt material is wound around an outer peripheral surface;
A molding die disposed on the outer peripheral surface side of the inner mold and having an inner peripheral surface against which the belt material is pressed during vulcanization;
An outer mold that is disposed on the outer peripheral surface side of the molding die and holds the molding die;
The molding die and the outer die are separate bodies, and the molding die can be exchanged,
A plurality of said can and inner die and a plurality of said molding die, freely combined features and be behenate belt manufacturing mold that is selectable by one, respectively. Claims wherein the inner mold and / or the molding die is cylindrical, different of said inner mold and / or a plurality of the molding die with different inner diameter of the outer diameter is characterized in that it is used Item 8. A mold for manufacturing a belt according to Item 7 . A belt manufacturing mold for manufacturing a belt from a belt material,
An inner mold around which the belt material is wound around an outer peripheral surface;
A molding die disposed on the outer peripheral surface side of the inner mold and having an inner peripheral surface against which the belt material is pressed during vulcanization;
An outer mold that is disposed on the outer peripheral surface side of the molding die and holds the molding die;
The molding die and the outer die are separate bodies, and the molding die can be exchanged,
The outer mold includes an inner outer mold that holds the molding mold, and an outer outer mold that is disposed on the outermost side of the belt manufacturing mold, and the inner outer mold and the outer outer mold. features and be behenate belt manufacturing mold that the mold is separate. The belt manufacturing die according to any one of claims 1 to 9 , wherein the belt is a V-ribbed belt.

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