Material supply device for vulcanizing machine

Abstract

The utility model provides a material supply device for a vulcanizing machine, which can effectively supply small blocks of elastic materials. The material supply device (1) comprises: a barrel (40) containing small pieces of elastic material and rotatable about a rotation axis (x2); one or more ribs (54) formed on the inner circumferential surface (45b) of the barrel (40) along the rotation axis (x2); and a supply port (60) which is formed at the front end of the charging barrel (40) and supplies the small pieces from the inside of the charging barrel (40) to the outside.

Description

Technical Field

[0001] The present utility model relates to a material supply device for a vulcanizer. Background Art

[0002] For example, a vulcanizer is used to manufacture an oil seal, which has an annular reinforcing ring and an annular elastomeric portion integrally formed with the reinforcing ring. During manufacturing, small pieces of an elastic material such as rubber are supplied to the vulcanizer. Summary of the Utility Model

[0003] Problems to be Solved by the Utility Model

[0004] When the elastic material has high adhesiveness, for example, the small pieces sometimes adhere to each other. In this case, an operator needs to manually separate the adhered small pieces and then supply them to the vulcanizer, resulting in very poor efficiency.

[0005] The present utility model has been completed in view of the above problems, and an object thereof is to provide a material supply device for a vulcanizer that can efficiently supply small pieces of an elastic material.

[0006] Means for Solving the Problems

[0007] To achieve the above object, the material supply device for a vulcanizer according to the present utility model includes: a hopper that accommodates small pieces of an elastic material and is capable of rotating about a rotation axis; and a supply port that is formed at the front end of the hopper and supplies the small pieces outward from the hopper.

[0008] The material supply device for a vulcanizer according to the present utility model further includes: one or more ribs that are formed on the inner peripheral surface of the hopper along the rotation axis.

[0009] In the material supply device for a vulcanizer according to the present utility model, the supply port is formed at the periphery of the front end of the hopper.

[0010] In the material supply device for a vulcanizer according to the present utility model, the supply port is formed by one or more openings that are formed in an arc shape along the periphery of the front end of the hopper.

[0011] The material supply device for a vulcanizer according to the present utility model further includes a cover that can open and close the front end of the hopper.

[0012] In the material supply device for a vulcanizer according to the present utility model, the supply port is formed at a position outside the periphery of the cover.

[0013] In the material supply device for a vulcanizer according to the present utility model, the material bucket is configured to change its posture between an upward posture for loading small pieces of the elastic material and a downward posture for supplying the small pieces of the elastic material from the supply port to the vulcanizer.

[0014] In the material supply device for a vulcanizer according to the present utility model, the rib extends parallel to the rotation axis.

[0015] In the material supply device for a vulcanizer according to the present utility model, the rib has a tapered region that tapers gradually from the inner peripheral surface of the material bucket toward the rotation axis in a cross-section along a hypothetical plane orthogonal to the rotation axis.

[0016] Effect of the utility model

[0017] According to the present utility model, it is possible to provide a material supply device for a vulcanizer that can efficiently supply small pieces of elastic material. Description of the drawings

[0018] Figure 1 It is a front perspective view schematically showing the structure of the material supply device 1 according to an embodiment of the present utility model.

[0019] Figure 2 It is a side view schematically showing the structure of the material supply device 1 according to an embodiment of the present utility model.

[0020] Figure 3 It is a rear perspective view schematically showing the structure of the material supply device 1 according to an embodiment of the present utility model.

[0021] Figure 4 It is a side view schematically showing the structure of the material supply device 1 according to an embodiment of the present utility model.

[0022] Figure 5 It is a front perspective view schematically showing the structure of the accommodating portion 22 according to a specific example.

[0023] Figure 6 It is a rear perspective view schematically showing the structure of the accommodating portion 22 according to a specific example.

[0024] Figure 7 It is a front view schematically showing the structure of the accommodating portion 22 according to a specific example.

[0025] Figure 8 It is along Figure 5 Sectional view taken along line 8 - 8.

[0026] Figure 9 It is along Figure 7Cross-sectional perspective view of the 9-9 line.

[0027] Figure 10 and Figure 8 Corresponding, it is a cross-sectional view for explaining the usage mode of the material supply device 1. Specific embodiments

[0028] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 It is a front perspective view schematically showing the structure of the material supply device 1 according to an embodiment of the present invention. Figure 2 It is a side view schematically showing the structure of the material supply device 1. Figure 3 It is a rear perspective view schematically showing the structure of the material supply device 1. The material supply device 1 is configured to supply materials to a vulcanizer. The vulcanizer can manufacture, for example, annular sealing devices such as oil seals. The sealing device is used, for example, to seal between a rotating shaft and a housing having a through hole for inserting the rotating shaft. The sealing device has, for example, an annular reinforcing ring and an annular elastomeric portion integrally formed with the reinforcing ring. In the vulcanizer, the elastomeric portion is integrally formed on the reinforcing ring.

[0029] Refer to together Figures 1 to 3 , the material supply device 1 includes a charging portion 10 for charging materials into the vulcanizer and a supply portion 20 for supplying materials to the charging portion 10. In this example, the charging portion 10 is arranged in front of the supply portion 20 at a predetermined height from the ground F. The charging portion 10 has a main body 11 formed, for example, by four side walls. The main body 11 has an upper opening 12 and a lower opening (not shown). In this example, the main body 11 has a conical shape that gradually tapers from the upper opening 12 toward the lower opening. A concave portion 13 that depresses from the upper side to the lower side is formed at the upper end of the rear side wall. The front end of the supply portion 20 is received in the concave portion 13. In addition, the charging portion 10 can also be installed on the vulcanizer. That is, the charging portion 10 can also be a component of the vulcanizer.

[0030] The supply portion 20 includes: a base 21 arranged, for example, at the same height as the charging portion 10, a receiving portion 22 that can swing relative to the base 21 about a rotation axis x1 parallel to the ground F, and a driving portion 23 connected to the receiving portion 22 to enable the receiving portion 22 to swing about the rotation axis x1. The base 21 is formed, for example, by a flat plate extending along the horizontal plane. A pair of supports 24, 24 are installed on the upper surface of the base 21, and a rotating shaft 25 rotatably supported by the supports 24. The central axis of the rotating shaft 25 coincides with the rotation axis x1. A pair of supports 27, 27 for rotatably supporting a housing 26 installed on the receiving portion 22 are rotatably supported on the rotating shaft 25. In this way, the receiving portion 22 can swing relative to the base 21 about the rotation axis x1.

[0031] Behind the supports 27, 27 and on the housing 22 of the receiving portion 22, a bracket 28 is mounted. The upper end of the drive portion 23 is connected to the bracket 28. The drive portion 23 has a telescopically extendable cylinder 30 and a support base 31 fixed to the ground F, for example. The cylinder 30 is mounted at the upper end of the support base 31. The cylinder 30 has a tube 30a and a piston rod 30b connected to a piston (not shown) disposed within the tube 30a. The upper end of the piston rod 30b is connected to the bracket 28. The cylinder 30 is, for example, a hydraulic or pneumatic type. In the cylinder 30, the piston reciprocates within the tube 30a by hydraulic pressure or air pressure, whereby the piston rod 30b moves forward and backward relative to the tube 30a. By such forward and backward movement, the receiving portion 22 can swing about the rotation axis x1.

[0032] As Figures 1 to 3 shown, when the piston rod 30b is disposed at the outermost limit of the tube 30a, the receiving portion 22 assumes a supply posture in which the front end is lowered downward relative to the rear end. In this supply posture, the front end of the receiving portion 22 is received within the concave portion 13 of the main body 11 of the input portion 10. Thus, the front end of the receiving portion 22 faces the upper opening 12 of the main body 11. As will be described later, in this supply posture, the material is supplied from the front end of the receiving portion 22 into the input portion 10. Figure 4 is a side view schematically showing the structure of the material supply device 1. As Figure 4 shown, when the piston rod 30b is disposed at the innermost limit of the tube 30a, the receiving portion 22 assumes a replenishment posture in which the front end is raised upward relative to the rear end. As will be described later, in this replenishment posture, the material is replenished from the front end of the receiving portion 22 into the receiving portion 22.

[0033] The receiving portion 22 has a hopper 40 and a housing 26 that supports the hopper 40 so as to be rotatable about the rotation axis x2. The hopper 40 is formed in a cylindrical shape with the rotation axis x2 as the central axis. Further, the rotation axis x2 is spaced upward from the rotation axis x1, but in a plan view, the rotation axis x1 and the rotation axis x2 are orthogonal to each other. The housing 26 has a bottom plate 41, for example, in a rectangular shape facing the ground F, and a front wall 42, a rear wall 43, and side walls 44, 44 standing up from the four edges of the bottom plate 41, respectively. The front wall 42 has a concave portion 42a (see Figure 1 ) that is recessed from the upper end toward the lower end. The concave portion 42a faces the outer peripheral surface 45a of the cylindrical portion 45 of the hopper 40 defined by the rotation axis x2. The outer peripheral surface 45a is formed in a cylindrical shape about the rotation axis x2. The front end of the cylindrical portion 45 is open at an opening 45b, while the rear end thereof is closed. The opening 45b of the cylindrical portion 45 is covered by a cover 46. The rear wall 43 faces the rear end surface 45c of the cylindrical portion 45. The bottom plate 41 and the side walls 44, 44 face the outer peripheral surface 45a of the cylindrical portion 45.

[0034] Figure 5It is a front perspective view schematically showing the structure of the accommodation part 22 related to a specific example. Figure 6 It is a rear perspective view schematically showing the structure of the accommodation part 22. Figure 7 It is a front view schematically showing the structure of the accommodation part 22. Figure 8 It is along Figure 5 The sectional view taken along line 8 - 8. In addition, in Figures 5 to 8 the illustration of the side wall 44 is omitted. Refer to Figures 5 to 8 together, the accommodation part 22 has a pair of motor rollers 50, 50 that are rotatably supported by the bracket 47 and the rear wall 43. The bracket 47 is supported by the bottom plate 41 of the housing 26. A motor is built into the motor roller 50, and the motor can rotate the motor roller 50 around the rotation axis x3 (refer to Figure 8 ). The rotation axis x3 is defined to be parallel to the rotation axis x2. In this example, the pair of motor rollers 50 and 50 are arranged at the same height from the bottom plate 41. Each motor roller 50 defines a cylindrical outer peripheral surface 50a that extends around the rotation axis x3. The pair of motor rollers 50 rotate in the same direction around the rotation axis x3.

[0035] The cylindrical part 45 of the hopper 40 is supported on the pair of motor rollers 50, 50. In this example, since the rotation axis x2 and the rotation axis x3 are defined to be parallel, the outer peripheral surface 50a of each motor roller 50 is in line contact with the outer peripheral surface 45a of the cylindrical part 45. As a result, when the pair of motor rollers 50, 50 rotate in the same direction around the rotation axis x3, the cylindrical part 45, that is, the hopper 40 rotates around the rotation axis x2 based on the frictional line contact between the outer peripheral surface 50a and the outer peripheral surface 45a. The rotation of the hopper 40 around this rotation axis x2 is supported by a pair of guide rollers 51, 51 installed on the front wall 42 of the housing 26 and a pair of guide rollers 52, 52 installed on the rear wall 43. When viewed from above, the rotation axes x4, x5 of the guide rollers 51, 52 are orthogonal to the rotation axis x2. The pair of guide rollers 51, 51 support the front surface 53a of the flange 53 that protrudes annularly from the outer peripheral surface 45a of the cylindrical part 45. On the other hand, the pair of guide rollers 52 and 52 support the rear end face 45c of the cylindrical part 45.

[0036] Figure 9 It is along Figure 7 The sectional perspective view taken along line 9 - 9. In addition, in Figure 9 the illustration of the cover 46 covering the front end of the cylindrical part 45 is omitted. Refer to Figure 8 and Figure 9, a cylindrical portion 45 forms a cylindrical accommodation space S with the rotation axis x2 as the central axis. A plurality of small pieces of elastic material to be supplied to a vulcanizer are accommodated in the accommodation space S. The elastic material includes, for example, synthetic rubbers such as nitrile rubber (NBR), hydrogenated nitrile rubber (H-NBR), acrylic rubber (ACM), and fluororubber (FKM). The small pieces can also be formed, for example, by cutting a flat strip-shaped long elastic material into a specified length. However, the small pieces of elastic material have dimensions and shapes that can pass through the supply port of the accommodation portion 22 described later. In addition, the small pieces of elastic material can have various levels of adhesiveness.

[0037] One or more ribs 54 are formed on the inner peripheral surface 45d of the cylindrical portion 45. In this example, the inner peripheral surface 45d is formed in a cylindrical shape around the rotation axis x2. Four ribs 54 are arranged at equal intervals around the rotation axis x2 on the inner peripheral surface 45d. The ribs 54 extend from a position adjacent to the opening 45b at the front end of the cylindrical portion 45 toward the rear end of the cylindrical portion 45. From Figure 8 It can be seen that in a cross-section along a hypothetical plane orthogonal to the rotation axis x2, each rib 54 has a main body region 54a that extends from the inner peripheral surface 45d toward the rotation axis x2 with an equal width and a tapered region 54b that gradually tapers as it moves from the main body region 54a toward the rotation axis x2. Each rib 54 is arranged, for example, at a specified angle inclined around the rotation axis x2. In addition, in this example, four ribs 54 are arranged on the inner peripheral surface 45d of the cylindrical portion 45, but a number of ribs 54 more or less than four can also be arranged. In addition, the formation of the ribs 54 can be omitted, the shape of the ribs 54 can also be different, and the ribs 54 can also be arranged in different forms.

[0038] Refer to Figure 5 , Figure 7 and Figure 9 , a ring-shaped frame 60 is installed at the opening 45b at the front end of the cylindrical portion 45. In the radial direction orthogonal to the rotation axis x2, a cover 46 is arranged at a position closer to the inner peripheral side than the outer peripheral edge 60a of the frame 60. In addition, the cover 46 is configured to be able to open and close an opening 60c formed by the inner peripheral edge 60b of the frame 60. At the opening 45b, a ring-shaped supply port 61 is formed at a position closer to the outer peripheral side than the outer peripheral edge 60a of the frame 60. As Figure 9 shown, the frame 60 is installed on the cylindrical portion 45, for example, through four protrusions 60d. As a result, the supply port 61 is formed by four arc-shaped openings 61a between the peripheral edge 45e of the opening 45b formed at the front end of the cylindrical portion 45 and the outer peripheral edge 60a of the frame 60. In this example, the protrusions 60d of the frame 60 are arranged at equal intervals around the rotation axis x2, so each opening 61a extends with the same length in the circumferential direction. In addition, the peripheral edge 45e of the opening 45b is continuous with the inner peripheral surface 45d of the cylindrical portion 45.

[0039] Next, the usage method of the material supply device 1 will be described below. Before use, as Figure 4 shown, the material supply device 1 swings the accommodating portion 22 around the rotation axis x1 based on the drive of the cylinder 30, thereby establishing the replenishing posture of the accommodating portion 22. At this time, the cover 46 is opened, and the opening 60c of the frame body 60 is opened. A specified amount of small pieces of elastic material is replenished into the accommodating space S of the cylindrical portion 45 from the opening 60c. After the cover 46 is closed, the material supply device 1 swings the accommodating portion 22 around the rotation axis x1 based on the drive of the cylinder 30, thereby establishing the supply posture of the accommodating portion 22. Figure 10 Corresponding to Figure 8 is a cross-sectional view for explaining the usage method of the material supply device 1. As Figure 10 shown, in the supply posture, a pair of motor rollers 50, 50 rotate around the rotation axis x3, whereby the hopper 40, i.e., the cylindrical portion 45, rotates around the rotation axis x2.

[0040] In the accommodating space S of the cylindrical portion 45, one or more ribs 54 formed on its inner peripheral surface 45d move around the rotation axis x2. When the rib 54 moves in the lower half-circle space of the accommodating space S below the rotation axis x2, the small piece P of elastic material moves around the rotation axis x2 based on contact with the rib 54. When the rib 54 moves from the lower half-circle space of the accommodating space S toward the upper half-circle space above the rotation axis x2, as shown by the arrow, the small piece P falls from the rib 54 due to gravity. As a result, the small piece P returns to and falls into the lower half-circle space of the accommodating space S. The movement and fall of the small piece P are repeated each time it contacts the rib 54. In this way, the small piece P is agitated in the accommodating space S. As long as the cylindrical portion 45 continues to rotate around the rotation axis x2, this agitation continues.

[0041] The front end of the cylindrical portion 45 is disposed below the rear end, so the small piece P repeatedly moves around the rotation axis x2 and falls at the front end in the accommodating space S. Since the supply port 61 at the front end of the cylindrical portion 45, i.e., the four openings 61a, are formed along the inner peripheral surface 45d of the cylindrical portion 45, the small piece P that repeatedly moves around the rotation axis x2 and falls drops from the opening 61a located in the lower half-circle space of the accommodating space S to the outside of the cylindrical portion 45. In the supply posture, the front end of the hopper 40, i.e., the cylindrical portion 45, is received in the recess 13 of the upper opening 12 of the input portion 10. Therefore, the small piece P that drops to the outside from the opening 61a of the cylindrical portion 45 is supplied to the vulcanizer via the input portion 10. In this way, as long as the rotation of the cylindrical portion 45 around the rotation axis x2 continues, the small piece P is automatically supplied to the vulcanizer.

[0042] According to the material supply device 1 for a vulcanizer as described above, by rotating the hopper 40 about the rotation axis x2, in the accommodation space S of the hopper 40, particularly due to the action of the ribs 54 formed along the rotation axis x2, the movement and fall of small pieces of elastic material are repeated. In this way, the stirring of the small pieces P of elastic material is performed in the accommodation space S. In the hopper 40, a supply posture is established in which its front end is arranged lower than its rear end, so the stirring of the small pieces P of elastic material is performed in the accommodation space S adjacent to the front end of the hopper 40. At the opening 45b at the front end of the hopper 40, one or more openings 61a, i.e., a supply port 61, are formed between its peripheral edge 45e and the outer peripheral edge 60a of the frame 60. Therefore, the small pieces P of elastic material can fall outward through the opening 61a. In this way, the small pieces P of elastic material are efficiently supplied to the vulcanizer.

[0043] As described above, the present utility model has been described by the above embodiments, but the technical scope of the present utility model is not limited to the scope described in the above embodiments. For those skilled in the art, it is obvious that various changes or improvements can be made to the above embodiments. According to the description in the claims, the embodiments with such changes or improvements are also included in the technical scope of the present utility model.

[0044] The embodiments described above are for easy understanding of the present utility model and are not used for limiting the interpretation of the present utility model. In addition, the above embodiments do not limit the objects of use of the present utility model, and the present utility model can include all solutions as its objects of use. The respective components, their configurations, materials, conditions, shapes, sizes, etc. possessed by the above embodiments are not limited to the illustrated contents and can be appropriately changed. For example, the present utility model includes the differences generated in the implementation such as manufacturing tolerances. In addition, within the scope where there is no technical contradiction, the components shown in different embodiments can be partially replaced or combined with each other. In addition, the respective structures can be appropriately selectively combined to achieve at least a part of the above problems and effects.

[0045] Description of Reference Numerals

[0046] 1 Material supply device, 10 Input section, 11 Main body, 12 Opening, 13 Recess, 20 Supply section, 21 Base, 22 Accommodating section, 23 Driving section, 24 Support, 25 Rotating shaft, 26 Housing, 27 Support, 28 Bracket, 30 Cylinder, 30a Pipe, 30b Piston rod, 31 Support table, 40 Hopper, 41 Bottom plate, 42 Front wall, 42a Recess, 43 Rear wall, 44 Side wall, 45 Cylindrical section, 45a Outer peripheral surface, 45b Opening, 45c Rear end face, 46 Cover, 47 Bracket, 50 Motor roller, 50a Outer peripheral surface, 51 Guide roller, 52 Guide roller, 53 Flange, 53a Front surface, 54 Rib, 54a Main body area, 54b Conical area, 60 Frame, 60a Outer peripheral edge, 60b Inner peripheral edge, 60c Opening, 60d Protrusion, 61 Supply port, 61a Opening, F Floor, P Small piece, S Accommodating space, x1 to x5 Rotation axes.

Claims

1. A material supply device for a vulcanizing machine, characterized in that: include: a barrel containing the small piece of elastic material and capable of rotating about an axis of rotation; as well as A supply port is formed at the front end of the barrel and supplies the small pieces from the inside of the barrel to the outside.

2. The material supply device for a vulcanizing machine according to claim 1, characterized in that: Also includes: One or more ribs are formed on the inner circumferential surface of the barrel along the rotation axis.

3. The material supply device for a vulcanizing machine according to claim 1 or 2, characterized in that: The supply port is formed at a peripheral edge of a front end of the barrel.

4. The material supply device for a vulcanizing machine according to claim 3, characterized in that: The supply port is formed by one or more openings formed in an arc shape along the peripheral edge of the front end of the barrel.

5. The material supply device for a vulcanizing machine according to claim 3, characterized in that: Also includes: A cover can open and close the front end of the barrel.

6. The material supply device for a vulcanizing machine according to claim 5, characterized in that: The supply port is formed at an outer side than the peripheral edge of the cover.

7. The material supply device for a vulcanizing machine according to claim 1, characterized in that: The barrel is configured to change its posture between an upward posture for inserting the small pieces of elastic material and a downward posture for supplying the small pieces of elastic material from the supply port to the vulcanizer.

8. The material supply device for a vulcanizing machine according to claim 2, characterized in that: The ribs extend parallel to the axis of rotation.

9. The material supply device for a vulcanizing machine according to claim 8, characterized in that: The rib has a tapered region that gradually tapers from an inner peripheral surface of the barrel toward the rotation axis in a cross section along an imaginary plane orthogonal to the rotation axis.

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