JPS64238Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an oil-heated trowel device used in a roll ironer for dry pressing sheets and the like.

A roll ironer is formed with a heating roll and a substantially arc-shaped trowel device called a chiest, and the trowel device has conventionally been generally of a steam heating type. However, the steam heating type requires a high-pressure boiler, generates drainage, has poor thermal efficiency, and has disadvantages in operability.
As No. 28931, we prototyped an oil-heated trowel device by applying the oil-heated heating roll technology that the applicant had already applied for to the trowel device. The prototype iron device had a meandering oil passage formed on the back side of the iron plate, and one in which the oil passage was formed in a single chamber formed between the iron plate and the back plate.
In either case, it was found that sufficient temperature uniformity could not be achieved and uneven drying was likely to occur.

The present invention was devised under the above circumstances, and its purpose is to provide an oil-heated trowel device that can prevent uneven drying and prevent a reduction in the effective pressing area. be.

Hereinafter, the present invention will be described with reference to an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a metal trowel plate, which has a semi-circular cross-section as shown in Fig. 3, or extends both sides of a semi-circular section, and forms a center angle of approximately 90° with this extended portion. It is formed to have a cross-sectional structure curved in an arc shape. In the present invention, these cross sections are collectively referred to as substantially arcuate cross sections. The surface of the trowel plate 1 is appropriately treated so as to have the required smooth surface. A central partition plate 2 is attached to the widthwise center of the back surface of the iron plate 1 along the longitudinal direction of the iron plate 1 by welding or the like. On the back surface of the iron plate 1, a plurality of arc-shaped partition plates 3 are provided with notches 3a at intervals.
... extend along the width direction of the trowel plate 1 across the central partition plate 2, and are attached by welding or the like with both ends positioned on the back surface of both front and rear edges of the trowel plate 1. Note that, for this reason, the central partition plate 2 is formed of a plurality of plate materials. Further, the arc-shaped partition plates 3... partition the front side heating chamber and the rear side heating chamber, which will be described later, into a plurality of small heating chambers, respectively, and the above-mentioned notches 3a... which communicate these heating small chambers with each other are on the iron plate abutting side. It is formed in The partition plates 3 prevent the iron plate 1 from expanding outward in the radial direction, and the notches 3a prevent the flow of hot oil from shifting due to differences in height, thereby making the flow uniform. In addition to preventing temperature differences in the radial direction of the iron plate 1,
It is used to prevent a drop in temperature at the contact area between the partition plate 3 and the partition plate 3, and to prevent the formation of linear undried areas on sheets or the like. Further, both ends of the central partition plate 2 are provided with end plates 4 provided along the width direction of the trowel plate 1 on the back side of both longitudinal ends of the trowel plate 1.
4 by welding or the like. In addition, 5 and 5 in the figure are fixing ribs attached by welding etc. to the back side of both side edges of the iron plate 1, and both ends of the above-mentioned partition plates 3... and end plates 4, 4 are fixed to these by welding etc. At the same time, a plurality of brackets 6 are attached over one of the fixing ribs 5 and the back surface of the iron plate 1. The bracket 6... has a take-out table 7,
Alternatively, in the case of a multi-roll ironer in which multiple trowel devices are installed in parallel and sheets, etc. are passed through them one after another, a transition body (not shown) connecting each trowel device can be attached. ing.

Further, on the back side of the iron plate 1, a back plate 10 is attached which forms between the iron plate 1 a front heating chamber 8 and a rear heating chamber 9 through which hot oil passes, with the central partition plate 2 as a boundary. It is being In this embodiment, the back plate 10 is divided into a plurality of parts, and the peripheral edges of the back plate 10 are welded to necessary parts such as the central partition plate 2, the arcuate partition plate 3, the end plates 4, and the fixing ribs 5. This back plate may be a single plate, and it goes without saying that the number of parts can be set arbitrarily even when the back plate is divided. Further, the depth t of the front and rear heating chambers 8 and 9 is, for example, about 10 mm, and a hot oil inlet 11 is provided at the upper edge of one end of the back plate 10.
Alternatively, hot oil outlet ports 12 are installed separately.
The hot oil inlet 11 and the hot oil outlet 12 are respectively communicated with a discharge port and a suction port of a hot oil circulation supply device (not shown). Connection ports 13 and 14 are provided on the back plate 10 at the upper edges of the other ends of the front and rear heating chambers 8 and 9.
are respectively attached, and these connection ports 13 and 14 are configured to communicate with each other via communication piping (not shown).

Furthermore, an air vent 1 such as a plug is provided at the upper edge of the longitudinal center of the front and rear heating chambers 8 and 9 on the back plate 10.
5 are provided respectively. Also, 16 in Figure 2,
16 is also an air vent for plugs, etc., but these are not used when the iron device is installed with the opening facing upward as in this embodiment, but when the iron device is installed with the opening facing upward. It is designed to be used in a variety of situations, and can be omitted.

In addition, 17 in the figure is a stepped protrusion-shaped stay that is provided in large numbers by connecting the iron plate 1 and the back plate 10,
These are attached by welding or the like, and are used to regulate the spacing and to prevent deformation of the iron plate 1 toward the surface side during use. In the figure, 18 is a leg.

The iron device having the above configuration is combined with a steam-heated or oil-heated heating roller 19 to form a roll ironer. In addition, Fig. 3 20 shows the introduction conveyor for sheets etc., 21
33 indicates a guide roller.

When filling the heating chambers 8 and 9 of the iron device according to the above embodiment with oil, the oil is supplied from the hot oil inlet 11 to the front heating chamber 8, first filled into this chamber 8, and then connected. The hot oil overflows from the port 13, is supplied to the rear heating chamber 9 from the connection port 14, fills this chamber 9, and then flows out from the hot oil outlet 12. The oil flow path at this time is shown by solid lines and dotted arrows in FIG. In filling oil in this manner, air mixed in the oil gathers at the upper edge of the longitudinal center of each heating chamber 8, 9, but air vents 15, 15 are provided in the area where this air pocket is expected to occur. Each time the air vent 15 is opened as necessary, the accumulated air can be easily vented from each heating chamber 8, 9.

By heating and circulating the oil with a hot oil circulation supply device after taking the above air venting measures,
put into use. In use, sheets etc. introduced by the introduction conveyor 20 are sandwiched between the trowel plate 1 and the heating roller 19, and then
As the iron plate 9 rotates, it is dried and pressed while sliding on the surface of the iron plate 1, and is taken out to the takeout table 7.

In this case, in addition to the disappearance of air pockets in each of the heating chambers 8 and 9 due to the above-mentioned air venting measures, the hot oil outlet 12 and the connection port 1 on the hot oil outlet side
3 are provided at the upper edge of the end of the front heating chamber 8 or the rear heating chamber 9, respectively, so that the air mixed in the oil is quickly discharged out of the front and rear heating chambers 8, 9 together with the flowing hot oil. Ru. Therefore, local temperature differences on the surface of the iron plate 1 due to air pockets can be prevented. Then, as in the case of oil filling described above, the hot oil flows through the front heating chamber 8 and then through the rear heating chamber 9 along the path shown by the solid line and dotted arrow in FIG. Therefore, in the front heating chamber 8, the temperature of the hot oil decreases as it moves from the hot oil inlet 11 to the connection port 13 due to heat exchange with sheets, etc., and in the rear heating chamber 9, the temperature of the hot oil decreases from the connection port 14 to the connection port 13. As it moves toward the outlet 12, the temperature of the hot oil is lowered by heat exchange with sheets and the like. Therefore, the amount of heat applied from the trowel plate 1 to each part of the sheet, etc. that passes while sliding on this surface is approximately equalized.

Further, the plurality of heating chambers forming the front heating chamber 8 and the plurality of heating chambers forming the rear heating chamber 9 are connected to each other through the notches 3 of the arc-shaped partition plate 3.
Since they are communicated at point a, the flow of hot oil is made uniform and the temperature difference in the radial direction is reduced.

In other words, uneven drying is prevented by preventing local temperature differences on the surface of the iron plate 1 due to air pockets as described above, and by equalizing the amount of heat given to each part of the sheets etc. by the flow of hot oil. It can be used to dry press sheets, etc.

Although the above-mentioned embodiment shows a case in which so-called chests are applied, the present invention can also be applied to a crossing body that connects two chests. Furthermore, the hot oil inlet and the connection port of the heating chamber on the opposite side of the heating chamber provided with this inlet do not necessarily need to be provided at the upper edge, and the flow of hot oil may be reversed to that in the above embodiment. . In addition, when implementing the present invention, unless it is contrary to the gist of the invention, trowel plates, central partition plates,
The specific structure, shape, position, etc. of the arcuate partition plate and its notches, back plate, front heating chamber, rear heating chamber, hot oil inlet, hot oil outlet, connection port, air vent, etc. are as per the above implementation. Don't be constrained by examples;
Of course, it can be configured and implemented in various ways.

As explained above, in this invention, a central partition plate and a back plate are attached to the back of the iron plate to form a front heating chamber and a rear heating chamber, and an arc-shaped partition plate having notches at intervals is attached to the front and rear sides. Installed in each heating chamber,
An air vent is provided at the upper edge of the longitudinal center of the front and rear heating chambers, a hot oil inlet or a hot oil outlet is provided at one end of the front and rear heating chambers, and a connection port that communicates with each other is provided at the other end. The hot oil outlet and one of the connection ports on the outflow side are disposed at the upper edge of the end. Therefore, according to the present invention, the air vent, hot oil outlet, and one connection port on the outflow side eliminate air pockets in the front and rear heating chambers and prevent the occurrence of local temperature differences. The hot oil was circulated from one end of either of the front and rear heating chambers to the other end through a hot oil inlet, a hot oil outlet, and a connection port that communicated with each other provided in the front and rear heating chambers divided by After that, the hot oil is circulated from the other end of the other heating chamber to one end, and the notches in the arcuate partition plate uniformly fluidize the hot oil, making it possible to equalize the amount of heat given to each part of the sheets, etc.
Furthermore, by providing a notch on the iron plate contact side, it is possible to prevent the temperature of the contact area between the iron plate and the partition plate from dropping lower than the other parts, and uneven drying can be prevented for these reasons. You can dry press sheets etc. When used as a chest, the arc-shaped partition plate prevents the trowel plate from expanding and deforming due to thermal expansion. This has the practical effect of preventing a reduction in press area.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a bottom view, and FIG. 3 is a cross-sectional view taken along the line - in FIG. 1... Trowel plate, 2... Central partition plate, 3... Arc-shaped partition plate, 3a... Notch, 8... Front heating chamber, 9
... Rear heating chamber, 10 ... Back plate, 11 ... Hot oil inlet, 12 ... Hot oil outlet, 13, 14 ... Connection port, 15 ... Air vent.

Claims (1)

[Scope of utility model registration request] A central partition plate is installed along the longitudinal direction of the trowel plate at the center in the width direction of the back surface of a metal trowel plate having a substantially arc-shaped cross section, and hot oil passes through the back surface of the trowel plate with the center partition plate as a boundary. A back plate is installed to form the front heating chamber and the rear heating chamber between the iron plate, and a back plate is attached to the front heating chamber and the rear heating chamber in the width direction of the iron plate in contact with the back surface of the iron plate and the back plate. The front heating chamber and the rear heating chamber are each partitioned into a plurality of small heating chambers by providing arc-shaped partition plates at intervals along the arc-shaped partition plates, and the heating small chambers are communicated with each other on the side of the arc-shaped partition plates in contact with the iron plate. Notches are provided at intervals in the direction along the arc of the arc-shaped partition plate, and a hot oil inlet is provided in the back plate at one end of either the front heating chamber or the rear heating chamber. , a connection port is provided in the back plate at the upper edge of the other end, and a hot oil outlet is provided in the back plate at the upper edge of one end of the other heating chamber, and the above connection port is provided in the back plate at the other end. An oil-heated trowel device characterized in that a connecting port is provided for conduction, and air vents are provided in the back plate at the upper edges of the longitudinal center portions of the front heating chamber and the rear heating chamber.