CN215791215U - Casting machine with double cooling structures - Google Patents
Casting machine with double cooling structures Download PDFInfo
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- CN215791215U CN215791215U CN202121342671.8U CN202121342671U CN215791215U CN 215791215 U CN215791215 U CN 215791215U CN 202121342671 U CN202121342671 U CN 202121342671U CN 215791215 U CN215791215 U CN 215791215U
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Abstract
The utility model provides a casting machine with a double-cooling structure, which comprises a cooling system and an air cooling system, wherein the cooling system comprises a water cooling system and an air cooling system, the water cooling system is arranged in a steel roller and a rubber roller, the air cooling system comprises a ventilation pipe, the ventilation pipe is arranged on the outer side of the rubber roller and is parallel to the rubber roller, a plurality of air outlets are axially arranged on the side wall of the ventilation pipe facing the rubber roller, and the ventilation pipe is connected with an air supply device. The air supply device comprises a fan and an air supply pipe, an air outlet of the fan is connected with one port of the air supply pipe, and the other port of the air supply pipe is connected with an air inlet of the ventilation pipe. According to the casting machine with the double-cooling structure, the ventilation pipe is arranged beside the rubber roller to blow air to the rubber roller, so that the problem that the rubber roller is not ideal in heat dissipation is solved, the adverse effect on a forming film is avoided, the film forming quality is greatly improved, and the production efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of casting machines, provides a casting machine, and particularly provides a casting machine with a double-cooling structure. Background
The casting machine is a common device in the market of disposable medical consumables at present. The casting machine consists of electric appliance control, extruding, forming, winding, smoke exhaust and other systems. As is well known, the process of producing a film using a casting machine is that molten pellets are extruded through a casting film head in an extrusion system, cooled and formed through a forming roller and a cooling roller in a forming system, and finally wound up through a winding system.
In the casting machine, two forming rollers, one is a steel roller with a steel surface, and the other is a rubber roller with a rubber surface. Because the heat transfer performance of the rubber roller is inferior to that of a steel roller, a water cooling system is singly used in the use process, particularly when the ambient temperature is higher in summer, and the cooling effect is poor.
A casting machine in the prior art has a scheme of blowing air to a membrane conveyed and formed through a guide wheel by a blower, and also has a scheme of introducing an air cooling assembly on a conveying belt of the casting machine for forming a membrane through the conveying belt and blowing air to the conveying belt. However, these cooling methods are very likely to cause the freshly formed film to flutter and flip, thereby causing the film to wrinkle. In addition, the existing air cooling device and air cooling method have low efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provide a casting machine with a double cooling structure, so that the cooling effect of a forming system is improved, the film forming quality can be improved, and the production efficiency can be improved.
The purpose of the utility model is realized as follows:
a casting machine with double cooling structures is disclosed, wherein a forming system comprises a pair of forming rollers, and an outlet of an extrusion system is corresponding to the forming rollers to convey a molten material; in a pair of shaping roller, one is the steel roll of steel face, and the other is the rubber roll of gluing the face, all sets up water cooling system, its characterized in that in steel roll and rubber roll: the rubber roller air cooling device is characterized by further comprising an air cooling system, the air cooling system comprises a ventilation pipe, the ventilation pipe is arranged on the outer side of the rubber roller and is parallel to the rubber roller, a plurality of air outlets are formed in the side wall, facing the rubber roller, of the ventilation pipe in the axial direction, and the ventilation pipe is connected with an air supply device.
The air supply device comprises a fan and an air supply pipe, an air outlet of the fan is connected with one port of the air supply pipe, and the other port of the air supply pipe is connected with an air inlet of the ventilation pipe.
Preferably, one end of the ventilation pipe is closed, the other end of the ventilation pipe is the air inlet, and the air inlet is connected with an air supply pipe of the air supply device.
Preferably, the positions of the ventilation pipe are as follows: the included angle between the two extrusion forming parts formed by the two forming rollers is 180 +/-30 degrees.
Preferably, the diameter of the air outlet of the ventilating pipe is 0.5-3 cm.
Preferably, an air outlet pipe is arranged on the air outlet.
Preferably, the distance between the adjacent air outlets on the ventilating pipe is 3-10 cm.
Preferably, the distance between the air outlet of the ventilation pipe or the pipe orifice of the air outlet pipe arranged on the air outlet of the ventilation pipe and the surface of the rubber roller is 8-20 cm.
Preferably, the ratio of the diameter of the vent pipe to the diameter of the rubber roller is 1: 2.5-3.5.
Preferably, the air outlet pipe on the ventilating pipe
Preferably, the length of the vent pipe is equal to that of the rubber roller.
Preferably, the power of the fan in the air cooling system is 1.1 kilowatt.
In a preferable example, the diameter of the air outlet of the ventilation pipe is 1cm, an air outlet pipe is arranged on the ventilation pipe, the distance between every two adjacent air outlets is 5cm, the length of the ventilation pipe is equal to that of the rubber roller, the ratio of the diameter of the ventilation pipe to that of the rubber roller is 1: 3, and the distance between the pipe orifice of the air outlet pipe and the rubber roller is 10 cm.
In the working process of the casting machine, according to the environment temperature condition, the water cooling system is opened, the air cooling system is opened, or the air cooling system and the water cooling system are simultaneously opened, when the air cooling system is opened, air is continuously supplied to blow the surface of the rubber roll, and the temperature of the surface of the rubber roll is controlled to be 18-22 ℃.
It is obvious to introduce air cooling to improve cooling efficiency and lower temperature, but how cold air acts on the cooling rollers of the molding system is a problem. If the air supply is improper, the production efficiency cannot be improved, and the quality of the film formation is also affected. Therefore, in the prior art, no precedent exists for adding an air cooling device to the roll forming system. According to the casting machine with the double-cooling structure, the ventilation pipe is creatively arranged beside the rubber roller to blow air to the rubber roller, so that the problem that the rubber roller is not ideal in heat dissipation is solved, the adverse effect on a formed film is avoided, the film forming quality is greatly improved, and the production efficiency is improved.
The utility model is further illustrated by the figures and examples.
Drawings
Fig. 1 is a schematic top view of a cooling structure of a casting machine according to the present invention.
Fig. 2 is a schematic sectional structure view a-a of the cooling structure shown in fig. 1.
Fig. 3 is a schematic view of the structure of the air inlet duct in the cooling structure shown in fig. 1.
Detailed Description
Fig. 1 to 3 show a cooling structure of a casting machine according to the present invention. The forming system in the casting machine comprises a pair of forming rollers, namely a rubber roller 1 and a steel roller 2, wherein the rubber roller 1 is a forming roller with a rubber surface, the steel roller 2 is a forming roller with a steel surface, and an outlet of an extrusion system (not shown in the figure) corresponds to the pair of forming rollers so as to convey a molten material to extrusion forming parts of the two forming rollers; and cooling structures are arranged in the rubber roller 1 and the steel roller 2, the cooling structures are water cooling structures, and a water inlet and a water outlet are arranged on the cooling structures to form a water cooling system (not shown in the figure) in the cooling structures. The cooling structure further comprises an air cooling system 3, wherein the air cooling system 3 comprises a ventilation pipe 31, and the ventilation pipe 31 is arranged in parallel with the rubber roller 1 and is arranged on the outer side of the rubber roller 1. The positions of the vent tube 31 are: the angle between the two press-molding portions formed by the two molding rolls is 180 ° ± 30 °, preferably 180 ° (as shown in fig. 2).
And a plurality of air outlets are formed in the side wall of the ventilation pipe 31 facing the forming roller along the axial direction. An air outlet pipe 311 is arranged at each air outlet of the ventilation pipe 31. The ventilation pipe 31 is connected with an air supply pipe 32, the air supply pipe 32 is connected with a fan 33, and the fan is connected with a motor.
The diameter of the air outlet of the ventilation pipe 31 is 1cm, and the distance between adjacent air outlets is 5 cm. The air outlet pipe 311 is 10cm away from the roller surface of the rubber roller 1. The length of the vent pipe 31 is equal to that of the rubber roller 1. The ratio of the diameter of the vent pipe 31 to the diameter of the rubber roller 1 is 1: 3, and the distance between the opening of the air outlet pipe 311 and the surface of the rubber roller 1 is 10 cm.
In autumn, winter and spring, the environment temperature is 18-25 ℃, and the surface temperature of the forming roller, especially the rubber roller, can be ensured to be about 20 ℃ only by using a water cooling system in the working process of the casting machine. However, in summer or at a high temperature period, the surface temperature of the forming roller, especially the rubber roller, cannot be guaranteed to be about 20 ℃ by virtue of a water cooling system of the casting machine, and the surface temperature of the rubber roller can be increased due to poor cooling effect, so that the quality of the extruded plastic film is poor. At the moment, the air cooling system can be started, a fan with the power of 1.1KW supplies air to the rubber roller uninterruptedly through the ventilation pipe 31 to produce an uninterrupted flowing air flow, and the air flow is blown on the rubber roller through the ventilation pipe with the length equal to that of the rubber roller with the water cooling system inside, so that the rubber roller can be well cooled, and the optimal temperature of the rubber roller is about 20 ℃.
Theoretically, when the temperature of the rubber roller is about 20 ℃, the produced casting product can obtain good cooling and forming effects. If the fan power is increased, the temperature of the rubber roller is lower, but better effect cannot be achieved, and energy consumption is higher.
According to the scheme, the continuous air is blown out from the air outlet with the diameter of 1cm, the distance between the air outlet pipe and the surface of the forming roller is 10cm, the distance between the adjacent air outlets on the ventilation pipe is 5cm, and the length of the ventilation pipe is equal to that of the rubber roller. The measurement in normal production shows that the temperature of the rubber roller is always controlled to be about 20 ℃, the effect is good, and the expectation is reached.
In addition, the angle between the position of the ventilation pipe 31 and the extrusion molding part formed by the two molding rolls is also an influencing factor in air cooling. The angle of 180 ° ± 30 ° is suitable, but outside this range, there is a possibility that the molten material entering the extrusion molding part and the just-extruded plastic film may be affected.
Among the prior art, cooling the forming roll is a very important problem in the casting machine, and the problem is not solved well, and when summer or ambient temperature is higher, the quality of the formed plastic film will have problems. In the prior art, the design of air cooling is not lacked except that a water cooling structure is arranged in a forming roller. The usual design is generally to blow air over the shaped plastic film and, in addition, to perform an air-cooling operation on the plastic film transport guide wheels. Blowing a plastic film can cause the film to flutter, thereby affecting film quality, and similar problems can occur for guide roll blowing. In the prior art, an air cooling structure is also provided, which is characterized in that an air duct is arranged in the forming roller to blow air into the forming roller. Such a design will inevitably complicate the structure of the forming roller, and the cooling effect is not ideal for the rubber roller.
The utility model sets up the air vent parallel to rubber roll outside the rubber roll, set up the air outlet on the air vent, set up the air outlet pipe on it. The air cooling structure has the advantages that the rubber roll has the worst heat dissipation performance directly, the most cooled part needs to be cooled by air blowing and is used as a supplement of water cooling, the plastic film extruded and formed by the casting machine can obtain proper temperature during extrusion, the ventilation pipe and the rubber roll are arranged in parallel and are separated by a set distance, the size and the distance of the air outlet, the ratio of the diameters of the ventilation pipe and the rubber roll, and even the included angle between the position of the air outlet and the extrusion forming part formed by the two forming rolls, and the further design of the parameters ensures that the air supply device has better cooling effect and lower adverse effect on the forming and conveying of the plastic film. The use method of the utility model limits the power of the fan to be 1.1 kilowatt, and is matched with the design of the air supply device in front, so that the output air supply can not only lead the temperature of the rubber roller to reach the standard, but also can not influence the forming quality of the plastic film due to overlarge wind power.
Because the continuous air of the air cooling system directly acts on the rubber roller, normal film discharging cannot be influenced, and additional problems such as film vibration cannot be caused.
Claims (4)
1. A casting machine with double cooling structures is disclosed, wherein a forming system comprises a pair of forming rollers, and an outlet of an extrusion system is corresponding to the forming rollers to convey a molten material; in a pair of forming roller, one is the steel roller of steel face, and another is the rubber roll of gluing the face, still includes cooling system, and it includes water cooling system and air cooling system, all sets up in steel roller and rubber roll water cooling system, its characterized in that: also comprises an air-cooling system, wherein,
the air cooling system comprises a ventilation pipe, the ventilation pipe is arranged on the outer side of the rubber roller and is parallel to the rubber roller, a plurality of air outlets are formed in the side wall of the ventilation pipe, facing the rubber roller, along the axial direction, and the ventilation pipe is connected with an air supply device;
the air supply device comprises a fan and an air supply pipe, an air outlet of the fan is connected with one port of the air supply pipe, and the other port of the air supply pipe is connected with an air inlet of the ventilation pipe.
2. The dual cooling structure casting machine according to claim 1, wherein: one end of the ventilation pipe is closed, the other end of the ventilation pipe is the air inlet, and the air inlet is connected with an air supply pipe of the air supply device.
3. The dual cooling structure casting machine according to claim 1, wherein: the positions of the ventilation pipe are as follows: the included angle between the two forming rollers and the extrusion forming part is 180 degrees +/-30 degrees; and/or the presence of a gas in the gas,
the diameter of the air outlet of the ventilation pipe is 0.5-3 cm; and/or the presence of a gas in the gas,
an air outlet pipe is arranged on the air outlet; and/or the presence of a gas in the gas,
the distance between adjacent air outlets on the ventilation pipe is 3-10 cm; and/or the presence of a gas in the gas,
the distance between the air outlet of the ventilation pipe or the pipe orifice of the air outlet pipe arranged on the air outlet of the ventilation pipe and the surface of the rubber roll is 8-20 cm; and/or the presence of a gas in the gas,
the ratio of the diameter of the vent pipe to the diameter of the rubber roller is 1: 2.5-3.5; and/or the presence of a gas in the gas,
the length of the vent pipe is equal to that of the rubber roll; and/or the presence of a gas in the gas,
the power of the fan in the air cooling system is 1.1 kilowatt.
4. The dual cooling structure casting machine according to claim 1, wherein: the diameter of the air outlet of the ventilation pipe is 1cm, an air outlet pipe is arranged on the ventilation pipe, the distance between every two adjacent air outlets is 5cm, the length of the ventilation pipe is equal to that of the rubber roller, the ratio of the diameter of the ventilation pipe to that of the rubber roller is 1: 3, and the distance between the pipe opening of the air outlet pipe and the rubber roller is 10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121342671.8U CN215791215U (en) | 2021-06-16 | 2021-06-16 | Casting machine with double cooling structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121342671.8U CN215791215U (en) | 2021-06-16 | 2021-06-16 | Casting machine with double cooling structures |
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| CN215791215U true CN215791215U (en) | 2022-02-11 |
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| CN202121342671.8U Active CN215791215U (en) | 2021-06-16 | 2021-06-16 | Casting machine with double cooling structures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478782A (en) * | 2021-06-16 | 2021-10-08 | 安卓(北京)卫生材料有限公司 | Casting machine with double cooling structures and cooling method thereof |
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2021
- 2021-06-16 CN CN202121342671.8U patent/CN215791215U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478782A (en) * | 2021-06-16 | 2021-10-08 | 安卓(北京)卫生材料有限公司 | Casting machine with double cooling structures and cooling method thereof |
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