JPS61257231A - Cooling type molding drum - Google Patents

Abstract

PURPOSE:To obtain a compact cooling type molding drum performing the cooling and the molding of a high-temp. adhesive substance continuously and efficiently by holding a peripheral wall of a molding drum which has the peripheral grooves on the outside periphery surface at the prescribed temp. or below with a cooling means. CONSTITUTION:A continuously supplied high-temp. adhesive substance 3 such as sugaralcohol and thermoplastic resin is compressed with both a molding drum 8 and a molding roller 19 and packed in the insides of the grooves 17 and molded into a band shape having the groove-shaped projection lines. In this period, the cooling water is always circulated and fed in a heat exchange chamber 11 of the molding drum and thereby the surface of the molding drum is always cooled at the prescribed temp. or below with the action of the radiating fins 13. Also the molding roller is cooled with a cooling means 15 and the quickly cooled and molded substance is beautifully peeled from the molding drum. This cooling type molding drum is small in the installation area and is a compact less energy consumption form.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is applicable to food products 1. In the manufacturing process of synthetic resins, etc., they become molten at high temperatures, exhibit stickiness, and do not stick if the temperature of the contact surface is lowered. This invention relates to a cooling type molding drum for cooling, solidifying, and molding high-temperature sticky substances that become difficult to use.

[Prior Art] An example of a device for cooling and molding a high-temperature sticky substance that is in a molten state is a steel conveyor. A steel conveyor continuously conveys the high-temperature sticky substance by placing it on a thin steel belt wrapped around a pulley, and the high-temperature sticky substance is cooled and solidified during conveyance. The steel belt is configured to be cooled by cooling water or the like from the back side.

[Problems to be solved by the invention] A thin steel belt has a small heat capacity inside the belt, and even if the high-temperature sticky substance is cooled with water or the like from the back side of the belt, the temperature of the belt surface that comes into contact with the high-temperature sticky substance is quite low. Therefore, if the temperature of the belt surface is finally cooled to a certain temperature or less, some substances can easily peel off in this state, but if the belt surface reaches a certain temperature even momentarily, the high temperature There are some sticky substances that do not easily peel off even if they are cooled to a predetermined temperature or lower. In the latter case, there is a problem in that it is difficult to handle the situation with a single type steel conveyor.

[Object of the Invention] The present invention was made in order to solve the above-mentioned problems, and it quickly cools the machine-side contact surface with the high-temperature sticky substance that is in a molten state at high temperatures, and cools the contact surface. The purpose of the present invention is to provide a space-saving and energy-saving compact cooling type molding drum that can perform solidification Φ molding without adhesion of the high-temperature adhesive substance by maintaining the temperature below a predetermined temperature. shall be.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the cooling type forming drum of the present invention has a groove formed on the outer circumferential surface of the drum so that it does not adhere to the surface of the material below a predetermined temperature. A forming drum that rotates in a fixed position while being supplied with a high-temperature adhesive substance that becomes hard to absorb and conducts the heat of the high-temperature adhesive substance into the thickness of the peripheral wall, and a forming drum that is cooled and transferred to the outer peripheral surface of the drum. It is characterized by comprising a cooling means that continuously removes heat from the high-temperature adhesive substance in contact with the substance to make it difficult to adhere to the substance.

[Operation] When the high temperature adhesive substance is continuously supplied onto the outer peripheral surface of the forming drum rotating at a fixed position, the high temperature adhesive substance is coated with a predetermined thickness on the outer peripheral surface of the forming drum having a circumferential groove. The molding drum then rotates and continuously transports the molded material.

Meanwhile, the heat of the high-temperature sticky substance is rapidly conducted and absorbed within the thickness of the peripheral wall of the coloring drum, which has a large heat receiving capacity, and at the same time, on the opposite side of the drum, a cooling means constantly absorbs the heat absorbed by the peripheral wall. It is dissipating.

Therefore, the outer peripheral surface of the forming drum is constantly cooled during rotation, and the surface that comes into contact with the high-temperature sticky substance is always kept below a predetermined temperature specific to the substance, which makes it difficult for the high-temperature sticky substance to adhere. ing.

Therefore, the high-temperature adhesive substance supplied to the forming drum is continuously solidified and formed in accordance with the shape of the groove, and is easily peeled off from the outer circumferential surface and fed into the next process.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3.

The apparatus shown in Fig. 1 continuously cools and solidifies a high-temperature sticky substance that is in a molten state at high temperatures, shapes it, crushes it into particles, and then cures the molded product. It is a device for performing tasks.

The high-temperature sticky substances used in the present invention are substances such as foods and synthetic resins that exhibit stickiness at high temperatures of about 50°C or higher and are difficult to mold as they are. , monosaccharides such as fructose, maltose, sucrose, lactose, paraty, two classes of nosaccharides, xylitol, sorbitol,
Examples include melts of sugars such as sugar alcohols such as maltitol, isomaltitol, and lactitol, and high-temperature supersaturated aqueous solutions. For these sugars, a sticky melt or a sticky high-temperature supersaturated aqueous solution may be molded as is using the cooling molding drum of the present invention, or a sticky melt or a sticky high-temperature supersaturated aqueous solution may be molded in advance. Synthetic resins that can be advantageously carried out by mixing a small amount of seed crystals and then molding while crystallizing sugar using a cooling molding drum include thermoplastic resins such as polyamide resins and epoxy resins. .

In the figure, 1 is a cooling-type molding drum that cools, solidifies, and molds a high-temperature sticky substance.

Reference numeral 2 shown in FIG. 3 is a cover that houses the forming drum 8. (This is omitted and not shown in FIGS. 1 and 2.) On the top surface of the cover 2, a high temperature adhesive substance 3 (hereinafter referred to as
A supply port 2a for receiving the supply of (simply referred to as substance 3)
is provided.

Furthermore, the interior of the cover 2 is configured to be maintained in a working environment suitable for the molding conditions of the material 3 by means of an air conditioning facility (not shown).

A support frame 4 is provided inside the cover 2.
A bearing 6 is provided on the support plate 5 of the support frame 4.
The bearing 6 rotatably supports a forming drum 8 via a drive shaft 7. Further, the support plate 5 is provided with a variable speed motor M1.
The variable speed motor Ml is operatively connected to a sprocket 7a fixed to the front drive shaft 7 via a chain 79.

The forming drum 8 has a cylindrical peripheral wall 12 that is considerably thicker than a steel belt of a steel conveyor.
and an end plate lO that closes both side ends of the peripheral wall 12, and the inside of the forming drum 8 is formed by a heat exchange chamber 1.
It is said to be 1. Inside the heat exchange chamber 11, radiation fins 13 are provided on the inner peripheral surface 12a of one peripheral wall 12 in parallel with the axial direction at approximately equal intervals.

As described above, the drive shafts 7 are fixedly installed at the centers of the end plates 1O, and the drive shafts 7 are formed hollow and communicate with the heat exchange chamber 11. The outer end of the drive shaft 7 is connected to a cooling means 15 via a one-turn joint 14.
The pipes 16a and 16b are connected and communicated with each other.

Next, the outer peripheral surface 12b of the peripheral wall 12 of the molding drum 8 is provided with a groove 17 for molding the substance 3 into a predetermined shape. The grooves 17 are formed in multiple circumferential shapes parallel to the rotating direction of the forming drum 8, and in the first embodiment, the groove shape is approximately U-shaped.

Next, a scraper 18 is provided at a position adjacent to the lower half of the forming drum 8. The scraper 18 has protrusions 18a in a shape and number of locations matching the groove 17, and is set at a position to scoop up the bottom of the valley groove 17 of the rotating forming drum 8 from below.

In addition, the material of the shaped drum 8, the thickness of the peripheral wall 12, the radiation fins 13. The shape of the grooves 17 and the like are factors that influence the heat conduction effect of the forming drum 8. The material and the thickness of the peripheral wall 12 are appropriately set depending on the temperature at which the substance 3 to be molded loses its stickiness, the temperature of the substance 3 at the time of supply, the amount of the substance 3 supplied, and the like. Therefore, in conjunction with the functions of the cooling means 15, etc., which will be described later, the outer circumferential surface 1 of the circumferential wall 12 of the forming drum 8
2b is configured to always be maintained within a predetermined temperature range determined for each substance.

For example, water is circulated as a refrigerant in the heat exchange chamber 11 as described later, and the peripheral wall 12 of the forming drum 8 is made of 18-8 stainless steel with an appropriate thickness. 2
The thermal conductivity at 0°C is approximately 0.5 kcal for water.
/mhr “0118-8 stainless steel is approximately 13kca
l/纏hr 'O. Therefore, the heat transfer within one circumferential wall 12 is faster than the speed at which heat is conducted from the circumferential wall fi 12 to the water. If the thickness is set appropriately depending on the temperature profile of the material 3, the heat of the material 3 can be quickly transferred to the peripheral wall 12.
On the other hand, since the part of the peripheral wall 12 where the substance 3 is not loaded is always cooled by water, the peripheral wall 1
A forming roller 19 is provided next to the forming drum 8 so that the outer circumferential surface 12b of the roller 2 is always maintained at a predetermined temperature. The forming roller 19 is rotatably supported by bearings 21 via roller shafts 20 fixed to both end surfaces so that the forming roller 19 is rotated with its rotation axis parallel to the forming drum 8. The inside of the forming roller 19 is a heat exchange chamber 22 formed in a cavity, and heat radiating fins or the like may be provided as necessary.The roller shaft 20 is a hollow tube, It communicates with exchange room 2z. The outer end of the roller shaft 20 is connected to the piping 16a of the cooling means 15 via the one-turn joint 23.
It is connected and communicated with 18b. Further, the material of the forming roller 19, the thickness of the peripheral wall, etc. are set according to the case of the forming drum 8, and the material 3 to be supplied is appropriately cooled and cooled.
It is constructed so that it can provide a shaping action.

Next, as shown in FIG. 1, a cooling means 15 is provided outside the cover 2. The cooling means 15 circulates a cooling medium through the heat exchange chambers 11 and 22 of the forming drum 8 and forming roller 19, and various cooling mediums can be selected depending on the temperature and properties of the substance 3 to be treated. In this example.

- Cooling water CW is used as an example. 24 is a storage tank for cooling water CW, and the cooling water CW is circulated back and forth between the storage tank 24 and the heat exchange chamber 11.22 via piping 16a, 16b by the discharge force of the pump pt. It is composed of Piping 1 on the outlet side of heat exchange chamber 11.22
6b is provided with temperature recorder sensors TRI and TR2.

Temperature controller TRCl and cooler 4 provided in storage tank 24
0 is configured such that the temperature of the cooling water CW can be maintained at a value suitable for the temperature of the substance 3 and the cooling conditions for the substance 3.

Next, as shown in FIG.
The 0-rotation cylinder 26, which is a device based on a hollow rotation cylinder 26 with an open rear end, is operatively connected to a motor M2 and supported by a rotation support mechanism (not shown).
It is configured to rotate around a horizontal axis. Further, on the inner circumferential surface 26a of the rotary cylinder 26, a large number of cutting boards 27 are provided, which are attached parallel to or at an angle to the rotation axis. Further, inside the rotary cylinder 26, temperature recorder sensors TR3 and T are provided at the front and rear parts, respectively.
R4 is provided.

The peripheral wall of the rotary cylinder 26 is a hot water jacket 28 having a double wall structure.

29 is a storage tank for hot water HW, and the hot water HW is pump P
2, the piping 30a is connected between the storage tank 29 and the hot water jacket 28.

It is configured to circulate back and forth via 30b. The piping 30a near the entrance to the hot water jacket 28 and the piping 30b near the exit are each equipped with a temperature recorder sensor TR.
5. TR6 is provided so that the temperature of hot water HW can be recorded. The storage tank 29 is provided with a temperature controller TRC2, and a control valve connected to the temperature controller TRC2 and a steam source (not shown) is connected to the hot water H
It is configured to maintain and adjust the temperature of W at a temperature suitable for curing and drying the substance 3.

Next, a front fixed case 3 is provided on the front end surface of the rotary cylinder 26.
1 is provided. A charging chute 32 is provided through the front fixed case 31, and the outlet end of the charging chute 32 is connected to the charging hole 26b formed in the front end surface of the rotary cylinder 26.
is inserted into. The input chute 32 has an input port adjacent to the lower end of the scraper 18, and the material 3 peeled off from the forming drum 8 by the scraper 18 is transferred to the input chute 32. It is configured to be inserted into the rotary cylinder 26 via.

The front fixed case 31 is connected to an air heater 34 via a pipe 33, and a blower 36 is connected to the air heater 34 so that air is sent through an air filter 35.

The heating pipe 34a of the air heater 34 is connected to the control valve 37.
It is connected to a steam source (not shown) via a control valve 3.
7 is configured to be operated by a temperature controller TRC5.

Next, the open rear end of the rotary cylinder 26 is inserted and supported by a rear fixed case 38 whose outer end is closed.

A discharge hopper 3 is located at the bottom of the rear fixed case 38.
The crushing process is carried out inside the 0-rotation cylinder 26 where 9 is provided.
The cured substance 3 falls from the rear end of the one-turn cylinder 26,
It is configured to be taken out to the outside via the discharge hopper 39.

Next, the operation of the configuration described above will be explained.

First, the apparatus of the embodiment is set to a starting state, and the substance 3 is continuously supplied to the outer circumferential surface 12b of the forming drum 8, which is rotating at zero rotation, by a supply device (not shown). A predetermined amount of material 3 is loaded on the molding drum 8 , and the material 3 is conveyed by the rotation of the forming drum 8 .

Since the substance 3 is sandwiched between the forming drum 8 and the forming roller 19 and cooled and compressed from both sides, the substance 3 is filled into the groove 17 without any gaps.

Since the substance 3 is in close contact with the inner surface of the groove 17 and is in contact with the forming drum 8 with a wide contact area, the heat of the substance 3 is efficiently conducted within the thickness of the peripheral wall 12 of the forming drum 8. At the same time, cooling water CW is constantly being circulated and fed to the heat exchange chamber 11 of the forming drum 8. The cooling water CW, together with the action of the radiation fins 13, continues to cool the peripheral wall 12 of the forming drum 8 that has absorbed the heat of the substance 3. Therefore,
The surface of the forming drum 8 is always cooled to a predetermined temperature or below, and the temperature of the contact surface of the substance 3 with the forming drum 8 is gradually cooled down and kept below the solidification temperature determined by the specific properties of the substance. It will be. Therefore, groove 17
The material 3 molded into the shape can be easily peeled off from the molding drum 8.

On the other hand, the surface of the forming roller 19 is also constantly cooled to below a certain temperature by the cooling means 15. Therefore, forming roller 1
9 also always steals a predetermined amount of heat from substance 3 when it comes into contact with substance 3.

In the manner described above, the substance 3 is quickly and efficiently cooled by the forming drum 8 and forming roller 19, and is formed into a predetermined groove shape. Then, the substance 3 is conveyed while the temperature of the surface in contact with the forming drum 8 is kept below a predetermined solidification temperature, and is neatly peeled off from the forming drum 8 by the scraper 18 .

The peeled substance 3 is in the form of a band having groove-shaped protrusions that are easily crushed, and this substance 3 is passed through the input chute 3.
2 and is thrown into the rotating drum 25. Substance 3 is
As the material is repeatedly scraped up and dropped by the baffle plate 27 of the rotating rotary cylinder 26, the thinner parts crack and are separated into protrusions, and are further crushed into finer particles. 3 does not need to be completely cured, even if some stickiness and moldability remain, and the crushed substance 3 will collapse under its own weight and solidify if left as is. , As mentioned above, because they are constantly stirred, they do not stick together, and the material particles gradually form into a uniform shape.
The inside of the rotary cylinder 26 is always maintained at a predetermined temperature suitable for the substance 3 by the hot water jacket 28 and hot air. Therefore, the granular material 3 is gradually cured, loses its stickiness, and solidifies.

Then, the granular material 3 falls from the open rear end of the rotary cylinder 26 and is taken out to the nose via the discharge hopper 39.

In the embodiment described above, the shape of the groove 17 is semicircular, but by changing the shape to another shape, it is also possible to change the molding state of the substance 3 after cooling, that is, the material shape.

In addition, in the embodiment, the cooling medium of the cooling means 15 is the cooling water C.
Although W is used, depending on the physical properties of the substance 3 to be molded, for example, an aqueous alcohol solution, Freon, etc. may be used. Also, instead of the heat radiation fins 13, a baffle plate or the like may be used in the heat exchange chamber 11 of the molding drum 8. is provided, and the cooling medium is in a heat exchange chamber l.
The cooling effect of the forming drum 8 may be enhanced by generating turbulent movement within the forming drum 8. However, in the case of substances that dislike moisture, cooling may be performed to prevent water vapor from condensing on the surface of the forming drum. It is necessary to configure the system so that the temperature does not become too low.

Further, in the embodiment, the material 3 formed by the cooling forming drum 1 is configured to be crushed and formed by the rotating drum 25, but the application example of the cooling forming drum 1 is not limited to the above combination. It's not something you can do.

[Effects of the Invention] As explained above, according to the present invention, the peripheral wall of the forming drum having a circumferential groove on the outer circumferential surface is cooled by the cooling means, and the contact surface of the forming drum with the high-temperature adhesive substance is cooled. Since the material is continuously cooled and molded while maintaining the temperature below a predetermined temperature specific to the material, it is possible to efficiently mold high-temperature adhesive materials, and the installation area is small and compact. This has the effect of realizing an energy-saving cooling type forming drum.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention, and FIG.
FIG. 3 is a partial cross-sectional view of the forming drum and forming roller in one embodiment, and is a front view of the cooling type forming drum in one embodiment. 1. Cooling molding drum, 3. High temperature sticky substance, 8.
... Molding drum, 12... Peripheral wall, 12b... Outer peripheral surface, 15... Cooling means, 17... Groove, 19... Forming roller. Patent applicant Hayashibara Biochemical Research Institute Co., Ltd. Niigata Iron Works Co., Ltd.

Claims (2)

[Claims] (1) Rotating in a fixed position while being supplied with a high-temperature adhesive substance that is difficult to adhere to material surfaces below a predetermined temperature on an outer peripheral surface having circumferential grooves, and the high-temperature adhesive substance A forming drum that conducts heat into the thickness of a peripheral wall, and a cooling means that cools the forming drum and continuously removes heat from a high-temperature adhesive substance in contact with the outer peripheral surface of the drum to make it difficult to adhere to the forming drum. A cooling type forming drum characterized by comprising: (2) Claim (1) comprising a forming roller that is rotatably installed parallel to the forming drum that rotates at a fixed position and that compresses a high-temperature adhesive substance by sandwiching it between the forming roller and the forming drum. Cooled molding drum as described in section.