Rubber continuous vulcanization system

Abstract

The present invention provides a rubber continuous vulcanization system, which can perform inspection and operation while preventing the scattering of vulcanized gas, and has excellent heat preservation. In a rubber vulcanization furnace (11, 12) in which a plurality of grooves are continuously arranged, a connector (13) with a heat-insulating wall (20) and an exhaust duct (16) is used to cover the front and rear of the grooves or between the grooves, and the vulcanized gas generated by the workpiece (10) in the groove and the connector (13) is sucked through the exhaust duct (16). The amount of gas sucked by the exhaust duct (16) is reduced in accordance with the amount of vulcanized gas diffused into the atmosphere, thereby taking environmental protection into consideration.

Description

Technical Field

[0001] The invention relates to a rubber continuous vulcanization system in which a plurality of vulcanization furnaces are arranged in series. Background Art

[0002] Conventionally, if there is nothing between the vulcanizing furnaces arranged in series (e.g., Patent Document 1), the vulcanizing gas is freely dispersed in the air, which may cause environmental pollution and adverse effects on human bodies. In addition, for example, heated objects (workpieces) such as automobile seals are cooled by air between the vulcanizing furnaces, so there is a problem that the vulcanization state deteriorates and the quality of the heated objects deteriorates. In addition, there is also a problem that dirt called grease is easily attached to the opening of the vulcanizing equipment when the high-temperature vulcanizing gas is cooled.

[0003] Therefore, there is known a structure in which adjacent vulcanization furnaces are directly connected to each other (for example, Patent Document 2).

[0004] According to this configuration, although the sulfide gas does not scatter and the temperature does not drop, there is a problem that operations such as checking the foaming state, relaxation state, posture, and passing position of the heated object, correcting the position or posture, and handling when an abnormality occurs cannot be performed.

[0005] In addition, in principle, in order to prevent the heated object from loosening between furnaces, the conveyor belt's transport speed needs to be set faster than that of the previous furnace's conveyor belt. However, the speed condition setting requires confirmation of the current loose state and the condition of the passing position based on the product shape and material. Therefore, if this cannot be confirmed, it may cause a malfunction.

[0006] In contrast, Figure 8 and Fig. 9 As shown, there is known a vulcanizing facility in which vulcanizing furnaces 1 and 2 are connected by a cylinder 3 and an openable and closable cover 5 is provided for inspection and operation (for example, Patent Document 3). In addition, a duct 6 is provided in the cylinder 3 to exhaust the vulcanizing gas in the cylinder 3 to the outside.

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent document 1: JP Patent Publication No. 2003-170441;

[0010] Patent document 2: JP Utility Model Publication No. 05-7421;

[0011] Patent document 3: JP Utility Model Application Publication No. 03-39515.

[0012] However, in Figure 8 and Fig. 9In the described vulcanizing equipment, the cover 5 is L-shaped. When the cover 5 is opened via the hinge 7, not only the front but also the top of the cylinder 3 is opened. Therefore, the sulfide gas in the cylinder 3 is scattered into the air from above, which may cause environmental pollution and influence on human body. Such problems have not been solved.

[0013] Furthermore, when the lid 5 is opened, air at room temperature easily enters the cylindrical body 3, so that the temperature of the object to be heated 10 drops, which may cause deterioration in the physical properties and quality of the product.

[0014] Moreover, since the cylinder 3 and the pipe 6 are not particularly insulated but exposed to room temperature, when the high-temperature sulfiding gas contacts the inner surface of the cylinder 3 and the pipe 6 and is cooled, it becomes grease M and adheres thereto. In particular, when the grease M attached to the pipe 6 accumulates, the ventilation area of ​​the pipe 6 becomes narrower, so the suction air volume of the sulfiding gas decreases. When the suction air volume decreases, it is not possible to exhaust fully, and the sulfiding gas flies outside the vulcanization equipment, that is, into the air. In order to prevent this situation, it is effective to clean the grease M regularly, but it costs cleaning costs. It is also possible to confirm the accumulation degree of grease M inside the pipe 6 and clean it as needed, but it is not easy to confirm the inside of the pipe 6 in terms of structure. In addition, it is also possible to set the suction volume when the ventilation area is narrow at the beginning of the operation of the vulcanization equipment, but since the air volume for deodorization treatment increases, it also becomes costly. Summary of the invention

[0015] An object of the present invention is to provide a rubber continuous vulcanization system which can perform inspection and work while preventing the dispersion of vulcanization gas and which is excellent in heat insulation.

[0016] To achieve the above-mentioned object, the present invention is characterized in that, in a rubber vulcanizing furnace (11, 12) in which a plurality of grooves are continuously arranged,

[0017] The front and rear of the groove or the space between the grooves is covered by a connector (13) having a heat-insulating wall (20) and an exhaust pipe (16).

[0018] Sulfurized gas generated by the workpiece (10) in the groove and the connecting body (13) is sucked in through the exhaust pipe (16).

[0019] The amount of sulfurized gas diffused into the atmosphere is suppressed, so that the amount of air intake of the exhaust pipe (16) is reduced, thereby taking environmental protection into consideration.

[0020] In addition, the present invention is characterized in that the processing amount of the sulfide gas desulfurization device connected to the exhaust gas duct (16) can be suppressed.

[0021] In addition, the present invention is characterized in that an inspection port (14) is provided in front of the connecting body (13), and a door (15) for opening and closing the inspection port (14) is provided in front of the inspection port (14), and the door (15) is any one of a vertical sliding type, a horizontal sliding type, an upward opening type, a downward opening type, and a horizontal opening type.

[0022] In addition, the present invention is characterized in that the door (15) is of an up-and-down sliding type, closing the inspection port (14) in a lower position and opening the inspection port (14) in an upper position.

[0023] In addition, the present invention is characterized in that a sealing gasket (Packing) (17) is installed at the peripheral end of the inspection port (14), and a pressing mechanism (40) is provided for pressing the door (15) against the sealing gasket (17) when the door (15) is in a closed state.

[0024] In addition, the present invention is characterized in that a fine adjustment mechanism (50) capable of changing the horizontal inclination of the workpiece (10) conveyed from upstream to downstream in the vulcanizing furnace (11, 12) is provided in the inspection port (14).

[0025] In addition, the reference numerals in parentheses indicate corresponding elements or corresponding matters described in the drawings and the detailed description to be described later.

[0026] According to the present invention, since the front and rear of the groove or between the grooves are covered by a connector with a heat-insulating wall and an exhaust duct, the workpiece is kept warm inside the connector and vulcanization continues, thereby preventing the physical properties of the workpiece from being particularly deteriorated.

[0027] In addition, at this time, the vulcanized gas generated by the workpiece in the groove and the connecting body is sucked through the exhaust duct, and the amount of air sucked by the exhaust duct is smaller than before, corresponding to the amount of sulfurized gas diffusion into the atmosphere. Therefore, it is possible to provide a rubber continuous vulcanization system that is more excellent in environmental protection than before.

[0028] Furthermore, since the processing amount of the sulfide gas desulfurization device connected to the exhaust gas duct can be suppressed, it is more efficient and the burden on the sulfide gas desulfurization device can be reduced.

[0029] In addition, according to the present invention, since an inspection port is provided in front of the connecting body, a door for opening and closing the inspection port is provided in front of the inspection port in any of the following ways: up-and-down sliding type, left-and-right sliding type, upward opening type, downward opening type, and horizontal opening type. When the door is opened, the top of the cylinder is not opened, thereby preventing the sulfide gas accumulated in the cylinder from scattering to the outside.

[0030] This makes it possible to easily inspect and operate the workpiece or the like from the inspection port while suppressing problems such as possible environmental pollution and influence on the human body.

[0031] Furthermore, since the heat-retaining property is excellent compared with the conventional example in which the upper surface of the cylinder is also open when the door is opened, the amount of grease deposits generated by cooling the high-temperature sulfide gas is also small.

[0032] In addition, according to the present invention, since the door is a vertical sliding type, the inspection port is closed in the lower position and opened in the upper position, so the structure is simple. In addition, since there is no door in the left and right directions of the cylinder and in the lower direction, the working space is large.

[0033] In addition, according to the present invention, since a sealing gasket is installed at the peripheral end of the inspection port, and a pressing mechanism is provided to press the door against the sealing gasket when the door is in a closed state, the door has a high degree of sealing against the cylinder when the door is closed, which can make the insulation effect inside the cylinder more excellent.

[0034] Furthermore, according to the present invention, since the inspection port is provided with a fine adjustment mechanism capable of changing the inclination in the horizontal direction relative to the advancing direction of the workpiece conveyed from upstream to downstream in the vulcanizing furnace, the operator can easily normalize the state of the workpiece through the inspection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a side view of the appearance of the rubber continuous vulcanization system according to the embodiment of the present invention.

[0036] Figure 2 yes Figure 1 AA enlarged cross-sectional view.

[0037] Figure 3A , Figure 3B It is shown Figure 2 An enlarged cross-sectional view of the sliding mechanism of the door, Figure 3A Indicates the state of closing the door. Figure 3B Shows the door being opened.

[0038] Figure 4 It is shown Figure 2 An enlarged cross-sectional view of the pressing mechanism of the door.

[0039] Figure 5 It is shown Figure 2 An enlarged stereoscopic view of the fine adjustment mechanism of the heated object (workpiece).

[0040] Figure 6 It shows support Figure 2 An enlarged top view of the conveying rollers of the heated object (workpiece).

[0041] Figure 7 It shows support Figure 2 An enlarged side view of another form of a conveying roller for a heated object (workpiece).

[0042] Figure 8 This is a side view of the appearance of a conventional continuous rubber vulcanization facility.

[0043] Fig. 9 yes Figure 8 BB enlarged cross-sectional view.

[0044] Description of Reference Numerals

[0045] 1. Curing furnace

[0046] 2. Curing furnace

[0047] 3 Cylinder

[0048] 5. Cover

[0049] 6 Pipeline

[0050] 7 Hinge

[0051] 10 Object to be heated (workpiece)

[0052] 11. Vulcanization furnace (microwave heating furnace; vulcanization tank)

[0053] 12. Vulcanization furnace (microwave heating furnace; vulcanization tank)

[0054] 13 Cylinder (connector)

[0055] 14 Inspection Port

[0056] 15 doors

[0057] 16 Exhaust duct

[0058] 17 Gasket

[0059] 20. Insulation material (insulation wall)

[0060] 21. Vulcanizing furnace (hot air heating furnace)

[0061] 30 Safety cover

[0062] 31 Cylinder

[0063] 31a Arm

[0064] 32 Chain

[0065] 33 Pulley

[0066] 34 Pulley

[0067] 40 Pressing mechanism

[0068] 41 Cylinder

[0069] 41a Arm

[0070] 42 Air Source

[0071] 43 Air supply pipe

[0072] 50 Micro-adjustment mechanism

[0073] 51 Support rod

[0074] 52 Support plate

[0075] 53 Connecting plate

[0076] 54 Round Rod

[0077] 55 Rotating Plate

[0078] 60 conveyor roller

[0079] 60A Transport roller for adjustment

[0080] 100 Rubber continuous vulcanization system

[0081] M Grease DETAILED DESCRIPTION

[0082] Hereinafter, a rubber continuous vulcanization system 100 according to an embodiment of the present invention will be described with reference to the drawings.

[0083] The rubber continuous vulcanization system 100 is as follows Figure 1 As shown, the vulcanizing furnaces 11 and 12, which are continuously arranged in series with a plurality of tanks, are connected by a connecting body (a cylindrical body in this embodiment, but not particularly limited) 13 to cover the gap between the vulcanizing furnaces 11 and 12. The vulcanizing furnaces (vulcanizing tanks) 11 and 12 are microwave heating furnaces for vulcanizing the heated object (workpiece) 10 by irradiating microwaves. In addition, the vulcanizing furnace 21 arranged in series downstream of the vulcanizing furnace 12 is a hot air heating furnace for vulcanizing the workpiece 10 by blowing hot air, and the vulcanizing furnace 12 and the vulcanizing furnace 21 are also connected by a cylindrical body 13 of the same structure. As the workpiece 10, for example, a sealing strip for an automobile is assumed.

[0084] like Figure 2 As shown, an inspection port 14 is provided on the front of the cylinder 13, and a rectangular door 15 for opening and closing the inspection port 14 is provided in front of the inspection port 14. The inspection port 14 is provided only in the front of the cylinder 13, and is not provided on the top. Figure 2 In the figure, the sliding mechanism described later is omitted.

[0085] The door 15 is configured to slide in the up-and-down direction, and closes the inspection port 14 in the down position, and opens the inspection port 14 in the up position.

[0086] Furthermore, an exhaust duct 16 is provided on the rear surface of the cylinder 13 to suck in the sulfide gas generated by the workpiece 10 in the cylinder 13 and then exhaust it to the outside.

[0087] That is, a sulfide gas desulfurization device (not shown) is connected to the exhaust duct 16, and after removing the sulfur portion from the sucked sulfide gas, the remaining air is exhausted to the outside.

[0088] In addition, the cylinder 13 is provided with a heat-insulating wall made of a heat-insulating material 20, which improves the heat-insulating effect. In addition, the door 15 and the exhaust duct 16 are also provided with heat-insulating materials 20, respectively, which improves the heat-insulating effect.

[0089] The sliding mechanism of the door 15 is not particularly limited, but in this embodiment, Figure 3A , Figure 3B As shown, a cylinder 31 (or a hydraulic cylinder) is used. The cylinder 31 is arranged on the rear side of the cylinder 13, and the end of the chain 32 installed on the arm 31a of the cylinder 31 is connected to the upper part of the door 15 on the front side of the cylinder 13 via pulleys 33 and 34, wherein the pulleys 33 and 34 are arranged above the front side and above the rear side of the safety cover 30 (or a ceiling) arranged above the cylinder 13. The combination of the cylinder 31, the chain 32, and the pulleys 33 and 34 is one set on the left and right (on the upstream and downstream sides relative to the forward direction of the workpiece 10), and at the same time, when the arm 31a of the cylinder 31 is extended, as shown in FIG. Figure 3A As shown, the door 15 descends to close the inspection port 14, and when the arm 31a of the cylinder 31 is shortened, as shown in FIG. Figure 3B As shown, the door rises to open the inspection port 14. Alternatively, the pulleys 33 and 34 may be driven directly by a motor. Figure 3A , Figure 3B In the figure, the pressing mechanism 40 described later is omitted.

[0090] A gasket 17 is attached to the peripheral end of the inspection port 14 on the front side so as to surround the inspection port 14. A pressing mechanism 40 is provided for pressing the closed door 15 toward the gasket 17, that is, toward the cylinder 13 side.

[0091] The pressing mechanism 40 is not particularly limited, but in this embodiment, Figure 4 As shown, when the door 15 is in the closed position, when air is supplied from the air source 42 via the air supply pipe 43 to the cylinder 41 arranged at four positions on the upper, lower, left and right sides of the front side of the door 15, the arm 41a of the cylinder 41 extends, causing the door 15 to lean against the cylinder 13 side and elastically contact the sealing gasket 17.

[0092] Furthermore, a fine adjustment mechanism 50 capable of changing the horizontal inclination of the workpiece 10 conveyed from upstream to downstream in the vulcanizing furnaces 11 and 12 is provided in the inspection port 14 .

[0093] The fine adjustment mechanism 50 is as follows Figure 5 and Figure 6 As shown, it is provided on one (60A) of a plurality of cylindrical conveying rollers 60 extending in the front-rear direction of the cylinder 13 and supporting the workpiece 10 from below for conveying. The operator can manually change the direction of the one conveying roller 60A for fine adjustment.

[0094] The fine adjustment mechanism 50 is not particularly limited, but in the present embodiment, support rods 51, 51 are provided in two directions extending from the rotation axis of the conveying roller 60, and the fine adjustment mechanism 50 includes: support plates 52, 52 for receiving the support rods 51, 51 from below, respectively; a connecting plate 53 for connecting the lower ends of the support plates 52, 52 to form a U-shape; a round rod 54 connected to the central lower portion of the connecting plate 53 and extending up and down; and a rotating plate 55 whose lower end is connected to the central upper portion and extends in the front-rear direction of the cylinder 13. The operator holds the front end of the rotating plate 55 and shakes it left and right, thereby easily changing the direction of the conveying roller 60A for fine adjustment via the round rod 54 connected to the rotating plate 55, the connecting plate 53, and the support plates 52, 52.

[0095] Here, if Figure 5 As shown in the figure, an example is shown in which the conveying roller 60A for adjustment is accommodated in the cylindrical body 13 , but the adjacent conveying rollers 60 may be accommodated in the cylindrical body 13 in the same manner.

[0096] In addition, the transport rollers 60 including the transport roller 60A for adjustment are all set to the same height, but Figure 7 As shown, only the transport roller 60A for adjustment may be made higher than the other transport rollers 60 by, for example, about 5 mm.

[0097] If only the conveying roller 60A for adjustment is made higher in this way, the effect of fine adjustment can be achieved earlier compared with a configuration in which all conveying rollers have the same height.

[0098] According to the rubber continuous vulcanization system 100 constructed in this way, since the vulcanization furnaces 11 and 12 are covered by the cylinder 13 with the heat insulating material 20 and the exhaust duct 16, the workpiece 10 is kept warm in the cylinder 13 and the vulcanization continues. This can also prevent the product properties of the workpiece 10 from being particularly deteriorated.

[0099] In addition, at this time, the vulcanized gas generated by the workpiece 10 in the cylinder 13 is sucked through the exhaust duct 16, but the amount of air sucked by the exhaust duct 16 is smaller than before, corresponding to the amount of the vulcanized gas that is suppressed from diffusing into the atmosphere, and the air is sucked reliably, thereby providing a rubber continuous vulcanization system 100 that is better in environmental protection than before.

[0100] Furthermore, since the processing amount of the sulfide gas desulfurization device connected to the exhaust gas duct 16 can be suppressed, it is more efficient and the burden on the sulfide gas desulfurization device can be reduced.

[0101] Furthermore, since the inspection port 14 is provided on the front face of the cylinder 13 connecting the vulcanizing furnaces 11 and 12 arranged in series, and the rectangular door 15 for opening and closing the inspection port 14 is provided in front of the inspection port 14 in a vertically slidable manner, the top face of the cylinder 13 is not opened when the door 15 is opened, and thus it is possible to suppress the sulfide gas accumulated in the cylinder 13 from scattering to the outside.

[0102] This makes it possible to easily inspect and operate the workpiece 10 and the like from the inspection port 14 while suppressing problems such as possible environmental pollution and influence on the human body.

[0103] Furthermore, since the heat-retaining property is excellent compared with the conventional example in which the upper surface of the cylinder 13 is also open when the door 15 is opened, the amount of grease deposits generated by cooling the high-temperature sulfidized gas is also small.

[0104] In addition, since the heat insulating material 20 is provided on the cylinder 13, the door 15 and the exhaust duct 16, respectively, the heat preservation effect is further improved and the adhesion of grease and dirt can be prevented.

[0105] In addition, since a sealing gasket 17 is installed at the peripheral end of the inspection port 14, and a pressing mechanism 40 is provided to press the door 15 against the sealing gasket 17 when the door 15 is in a closed state, the airtightness of the door 15 to the cylinder 13 is improved when the door 15 is closed, which can make the insulation effect inside the cylinder 13 more excellent.

[0106] Furthermore, since the inspection port 14 is provided with the fine adjustment mechanism 50 which can change the inclination in the horizontal direction relative to the advancing direction of the workpiece 10 conveyed from upstream to downstream in the vulcanizing furnaces 11, 12, 21, the operator can easily make the state of the workpiece 10 a normal state through the inspection port 14.

[0107] In the present embodiment, the door 15 is of the vertical sliding type, but any method may be used as long as the top of the cylinder 13 is not open, and thus, for example, it may be of the horizontal sliding type, the upward opening type, the downward opening type, or the horizontal opening type.

[0108] Furthermore, although the cylinder 13 is provided as a connector between the vulcanizing furnaces (vulcanizing tanks) 11 and 12, the connector may be provided at both ends or one end of the vulcanizing furnaces (vulcanizing tanks) arranged continuously.

Claims

1. A rubber continuous vulcanization system, characterized in that: In a rubber vulcanizing furnace with multiple tanks arranged in series, The front and rear of the groove or the space between the grooves is covered by a connector with a heat-insulating wall and an exhaust pipe. Sulfurized gas generated by the workpiece in the groove and the connecting body is sucked in through the exhaust pipe, The amount of air intake of the exhaust duct is reduced in accordance with the amount of the sulfurized gas that is suppressed from diffusing into the atmosphere. An inspection port is provided in front of the connector, and The inspection port is provided with a fine adjustment mechanism capable of changing the inclination in the horizontal direction with respect to the advancing direction of the workpiece conveyed from upstream to downstream in the vulcanizing furnace.

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