JPS61257230A - Molding device - Google Patents

Abstract

PURPOSE:To obtain a compact molding device performing solidification, molding and the crushing of a high-temp. adhesive substance efficiently by cooling continuously the high-temp. adhesive substance while cooling the peripheral wall of a molding drum having peripheral grooves on an outside periphery surface, molding it and thereafter crushing it with a crushing drum and molding it. CONSTITUTION:The continuously supplied high-temp. adhesive substance 3 such as sugaralcohol and thermoplastic resin is cooled and compressed with the molding drum 8 and a molding roller 19 which are always cooled at a prescribed temp. or below by the cooling water CW and the radiating fins 13 and packed in the insides of the grooves 17 and molded into a band-shape having the groove-shaped projection lines. Then the substance 3 is fed to a rotary cylindrical type crushing drum 25 having the baffle plates 27 and the part thin in the thickness is divided and separated at every projection lines and furthermore crushed in a fine granular shape and molded into a uniform granular shape while being stirred and taken out through a discharge hopper 39. In such a way, the solidification, the molding and the crushing of the high- temp. adhesive substance are efficiently performed and also the less energy consumption type molding device which is small in the installation area and compact is obtained.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is used in the manufacturing process of foods, synthetic resins, etc., to melt at high temperatures, exhibit stickiness, and stop adhering if the temperature of the contact surface is lowered. This invention relates to a molding device for cooling, solidifying, crushing, 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 adhesive substance on a thin steel belt wrapped around a pulley. The steel belt is configured to be cooled from the back side with cooling water or the like so that the high-temperature sticky substance is cooled, solidified, and shaped during transportation. When the cooled and solidified high-temperature adhesive material is further molded into fine pieces, a crusher is used in addition to the steel conveyor.

[Problems to be solved by the invention] Thin steel belts have a small heat capacity and poor heat transfer efficiency. The surface that comes in contact with the belt does not cool down easily.If the temperature of the belt surface eventually cools below a certain temperature, some substances can easily peel off in this state, but even momentarily, the surface of the belt does not cool down to a certain temperature or higher. There are some substances that do not easily peel off even if the high-temperature adhesive substance is 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. Furthermore, even in the former case, the temperature of the entire high-temperature sticky substance placed on the steel belt decreases, and the contact surface of the high-temperature sticky substance is kept below a predetermined temperature, so that the contact surface It is necessary to continue forcibly cooling the steel belt with cooling water until it loses its grip.
Therefore, there is a problem in that the distance for conveying the high-temperature adhesive substance becomes long, the installation space for the equipment becomes large, and the equipment cost becomes high.

[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. By maintaining the temperature below a predetermined temperature, the high-temperature sticky substance can be solidified and molded, and the solidified and molded material can be further formed into an outer frame and molded, which is a space-saving and energy-saving type. The purpose is to provide a compact molding device.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the molding device of the present invention has an outer circumferential surface provided with grooves so that it is difficult to adhere to the material surface at a temperature below a predetermined temperature. A forming drum that rotates in a fixed position while being supplied with a high-temperature adhesive substance 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 is in contact with the outer periphery of the drum. A cooling means that continuously removes heat from the high-temperature sticky substance to make it difficult to adhere to the substance, and a rotational movement of the substance formed by the forming drum.

Furthermore, it is characterized by comprising a hollow crushing drum for crushing and shaping.

[Operation] When a high-temperature adhesive substance is continuously supplied onto the outer peripheral surface of a forming drum that rotates at a fixed position, the high-temperature adhesive substance adheres to a predetermined thickness on the outer peripheral surface of the forming drum having a circumferential groove. Then, it is continuously conveyed by the rotation of the forming drum.

Meanwhile, the heat of the high-temperature sticky substance is rapidly conducted and absorbed within the thickness of the peripheral wall of the forming drum, which has a large heat receiving capacity, and at the same time, on the opposite side of the drum, cooling means constantly dissipate the heat absorbed by the peripheral wall. I'm letting you do it.

Therefore, the outer peripheral surface of the forming drum is constantly cooled, and the contact surface of the high-temperature sticky substance.

The temperature is always kept below a predetermined temperature specific to the substance, which makes it difficult for high-temperature adhesive substances to adhere. 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 supplied to the crushing drum.

The substance supplied to the crushing drum is crushed by the rotational movement of the crushing drum, and is repeatedly stirred, thereby forming the crushed fine particles without adhering to each other.

[Example] Examples of the present invention will be described below 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 and shapes it, then crushes it into granules and molds it into particles, as well as curing the molded product. This is a molding device 1 for.

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. Melts of sugars, such as monosaccharides such as tritose, bisaccharides such as maltose, sucrose, lactose, and palatinose, sugar alcohols such as xylitol, sorbitol, maltitol, immaltitol, and lactitol, and high-temperature supersaturated aqueous solutions. be. These saccharides can be used as a sticky melt or a sticky high-temperature supersaturated aqueous solution.

Molding may be carried out using the molding device 1.Alternatively, a small amount of seed crystals may be mixed in advance into a sticky melt or a sticky high-temperature supersaturated aqueous solution, and then the sugar may be crystallized using the molding device 1. It can also be advantageously carried out by molding. As the synthetic resin, for example, polyamide resin 1. There are thermoplastic resins such as epoxy resins.

8 in the figure is a forming drum that cools, solidifies, and forms the molten sticky substance.

Reference numeral 2 shown in FIG. 3 is a cover that houses the forming drum 8, and the upper surface thereof is provided with a supply port 2a for receiving supply of a high-temperature adhesive substance 3 (hereinafter simply referred to as substance 3). There is. Further, the interior of the cover 2 is configured to be maintained in a working environment suitable for the molding conditions of the substance 3 by 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 equipped with a variable speed motor Ml.
The variable speed motor M1 is operatively connected to a sprocket 7a fixed to the drive shaft 7 via a chino 9.

The forming drum 8 is composed of a cylindrical peripheral wall 12 that is considerably thicker than a steel belt of a steel belt conveyor, and end plates lO that close both ends of the peripheral wall 12. The inside of the forming drum 8 is a heat exchange chamber 11. Inside the heat exchange chamber 11, radiation fins 13 are provided on the inner peripheral surface 12a of the peripheral wall 12 at approximately equal intervals in parallel to the axial direction.

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 the cooling means 15 via the rotary joint 14.
It is connected and communicated with the pipes 16a and 16b.

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 this 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.

Further, the material of the forming drum 8, the thickness of the peripheral wall 12, the shape of the radiation fins 13, the grooves 17, etc. 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 cooling means 15, etc., which will be described later, the peripheral wall 12 of the forming drum 8. The outer circumferential surface 12b of is configured to be always maintained at a predetermined temperature or lower 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/■hr "0. Therefore, the movement of heat within the surrounding wall 12 is faster than the rate at which heat is conducted from the surrounding wall 12 to the water. Therefore, the thickness of the surrounding wall 12 is If the thickness is set appropriately depending on the temperature, amount, etc. of the substance 3 loaded on the outer peripheral surface 12b, the heat of the substance 3 is quickly absorbed into the peripheral wall 12, and on the other hand, the substance 3 is loaded on the peripheral wall 12. Since the parts that are not heated are always cooled by water, the outer peripheral surface 12b of the peripheral wall 12 is always maintained within a predetermined temperature range.

Next, a forming roller 19 is provided next to the forming drum 8. The forming roller 19 is rotated 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.

It is rotatably supported by a bearing 21. Forming roller 19
The interior of the roller shaft 20 is a hollow heat exchange chamber 22, and heat radiating fins or the like may be provided as needed.The roller shaft 20 is a hollow tube. is connected to. The outer end of the roller shaft 20 is connected to the piping 16a, 16b of the cooling means 15 via the rotary joint 23.
are connected and communicated. Further, the material of the forming roller 19, the thickness of the peripheral wall, etc. are set in accordance with the case of the forming drum 8, and the structure is such that an appropriate cooling forming effect can be applied to the supplied material 3. There is.

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 embodiment, cooling water CW is used as an example. 24 is a storage tank for cooling water CW, and the cooling water CW is supplied to the pump P1.
The discharge force of the storage tank 24 and the heat exchange chamber 11.2
2 through piping 16-a and 16-b. A temperature recorder sensor TRI,
TR2 is provided.

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. 1, a crushing drum 25 is installed next to the scraper 18. The crushing drum 25 is a device based on a hollow rotary cylinder 26 with an open rear end, and the zero-rotation cylinder 26 is operatively connected to a motor M2 and supported by a rotation support mechanism (not shown). , configured to rotate about a horizontal axis.

Further, a large number of cutting boards 27 are provided on the inner circumferential surface 26a of the rotary cylinder 26, either parallel to or at an angle to the rotational axis. Further, inside the rotary cylinder 26, temperature recorder sensors TR3 and TR4 are provided at the front and rear parts, respectively.
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;

A pipe 30a is connected between the storage tank 29 and the hot water jacket 28 by the discharge force of the pump P2.

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 41 connected to the temperature controller TRC2 and a steam source (not shown) adjusts the temperature of the hot water HW to an appropriate temperature for curing and drying the substance 3. It is configured to maintain and adjust the temperature.

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 one-rotation 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 from the forming drum 8 by the scraper 18 is transferred to the crushing drum 25 through the input chute 32. It is configured to be supplied inside the.

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.
9 is provided inside the 0-rotation cylinder 26.
The cured substance 3 falls from the rear end of the rotating 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 top of the material 3, 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 below a predetermined temperature, 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 unique properties of the substance. It will be dripping. Therefore, groove 17
The material 3 formed into the shape can be easily peeled off from the forming 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.

As described above, the substance 3 is quickly and effectively cooled by the forming drum 8 and the forming roller 19, and is formed into a predetermined groove shape. Then, the substance 3 is transported while the temperature of the contact surface with the forming drum 8 is maintained at a temperature below the 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 with groove-shaped protrusions that are easily crushed.

It passes through the input chute 32 and is supplied to the crushing drum 25. The substance 3 is repeatedly scraped up and dropped by the cutting board 27 of the rotating rotary cylinder 26, so that the thinner parts are cracked and separated into ridges, and further crushed into finer particles. At this point, the substance 3 does not have to be completely cured; it still has some stickiness and moldability, and if the substance 3 is crushed into granules, it will collapse under its own weight and harden if left as it is. Even if the materials are stored, they are constantly stirred as described above, so they do not stick to each other, and the material particles are gradually formed into a uniform shape. The temperature is always maintained at a predetermined temperature suitable for the substance 3 by WAS of warm air. Therefore, one granular substance 3 gradually cures and loses its stickiness and solidifies.

Then, the granular substance 3 spills out from the open rear end of the rotary cylinder 2 6 and is taken out to the outside 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, the heat exchange chamber 11 of the molding drum 8 may be A plate etc. is provided, and the cooling medium is connected to the heat exchange chamber 1.
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.

In addition, in the embodiment, the air heater 34 and the crushing drum 25
A hot water jacket 28 is provided in the rotary cylinder 26 to maintain a uniform temperature inside the rotary cylinder 26 and to effectively cure the substance 3. However, depending on the type of the substance 3, a heating device is not necessarily necessary. .

[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 peripheral surface is cooled by the cooling means, and the temperature of the contact surface of the forming drum b with the high-temperature adhesive substance is adjusted to The material is continuously cooled and molded while being kept below a specific temperature, and the material is further crushed and molded using a crushing drum, making it possible to efficiently solidify and crush high-temperature sticky materials. The present invention has the advantage that it is possible to realize a compact and energy-saving molding apparatus that can perform the molding process well and has a small installation area.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention, and FIG.
In one embodiment. FIG. 3 is a partial cross-sectional view of the forming drum and forming roller. FIG. 3 is a front view of the forming drum in one embodiment. l... Molding device, 3... High temperature sticky substance (substance),
8... Molding drum, 12... Peripheral wall, 12b... Outer peripheral surface. 15... Cooling means, 17... Groove, 19... Forming roller, 25 Crushing drum. 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 the heat of the forming drum into the thickness of the peripheral wall; a cooling means that cools the forming drum and continuously removes heat from a high-temperature sticky substance in contact with the outer circumferential surface of the drum to make it difficult to adhere; A molding device comprising a hollow crushing drum for further crushing and molding the material molded by the molding drum through rotational motion. (2) Claim (1) comprising a forming roller that is rotatably installed in parallel with the forming drum that rotates at a fixed position and compresses a high-temperature adhesive substance by sandwiching it between the forming roller and the forming drum. The molding device described in Section 1.