CN213441092U

CN213441092U - Screw temperature control system for film blowing machine

Info

Publication number: CN213441092U
Application number: CN202022321428.XU
Authority: CN
Inventors: 王惠民; 魏勇; 马会师
Original assignee: Changzhou Bailiji Biomaterial Science And Technology Co ltd
Current assignee: Changzhou Bailiji Biomaterial Science And Technology Co ltd
Priority date: 2020-10-17
Filing date: 2020-10-17
Publication date: 2021-06-15
Anticipated expiration: 2030-10-17

Abstract

The application relates to a screw temperature control system for a film blowing machine, which relates to the field of film blowing machines and comprises a charging barrel and heaters arranged on the circumference of the charging barrel, wherein a temperature control device is arranged on the circumference of the charging barrel; the temperature control device comprises a cold air box sleeved outside the heater and a cold water box sleeved outside the cold air box; the cold air box is communicated with an air inlet pipe and an air outlet pipe; the air inlet pipe and the air outlet pipe are respectively close to two ends of the cold air box; one end of the air inlet pipe and one end of the air outlet pipe penetrate through the cold water pipe and are in sealed connection with the side wall of the cold water pipe; a water inlet pipe is communicated with one side of the cold water tank and the position in the middle of the cold water tank; two water outlet pipes are communicated with the cold water tank; the two water outlet pipes are respectively close to the positions of two ends of the cold water tank; a water supply tank is arranged on one side of the charging barrel; the water supply tank is communicated with the water inlet pipe through a water supply pipe; the water supply pipe is communicated with a water pump; the cold water tank is provided with a fan communicated with the air inlet pipe. This application has the effect of conveniently controlling the extrusion mechanism temperature.

Description

Screw temperature control system for film blowing machine

Technical Field

The application relates to the field of film blowing machines, in particular to a screw temperature control system for a film blowing machine.

Background

The film blowing machine is a mechanical device for heating and melting plastic particles and then blowing the plastic particles into a film, and generally comprises an extrusion mechanism, a traction mechanism, a curling mechanism and the like. The extrusion mechanism is used for pushing and mixing plastic particles in the hopper at a certain temperature through a screw to obtain molten and mixed plastic, and then extruding the plastic through the die head.

At present, chinese patent with publication number CN204183862U discloses a double screw extruder, which comprises a motor, the output end of the motor is connected with a speed reducer through a transmission belt, the speed reducer is connected with a first screw rod through a thrust bearing, the first screw rod is further provided with a transmission gear, the first screw rod is connected with a second screw rod through the transmission gear, the end parts of the first screw rod and the second screw rod respectively extend into a charging barrel, the top of the charging barrel is further provided with a hopper, the bottom of the hopper is further provided with a feeder, the feeder is communicated with the charging barrel through a feeding transmission mechanism, the outside of the charging barrel is further provided with a heating layer, and the end part of the charging barrel is further provided with a head.

In view of the above related technologies, the inventor believes that the material is easily subjected to extrusion, friction and shearing in the barrel, and generates much heat, which often causes the actual working temperature of the barrel to exceed the required extrusion temperature, thereby affecting the decomposition condition of the material and reducing the quality of the final product.

SUMMERY OF THE UTILITY MODEL

In order to control the temperature of extrusion mechanism, improve the product quality who extrudes, this application provides a screw rod temperature control system for inflation film manufacturing machine.

The application provides a screw rod temperature control system for inflation film manufacturing machine adopts following technical scheme:

a screw temperature control system for a film blowing machine comprises a material cylinder and a heater arranged in the circumferential direction of the material cylinder, wherein a temperature control device is arranged in the circumferential direction of the material cylinder; the temperature control device comprises a cold air box sleeved outside the heater and a cold water box sleeved outside the cold air box; the cold air box is communicated with an air inlet pipe and an air outlet pipe; the air inlet pipe and the air outlet pipe are respectively close to two ends of the cold air box; one end of each of the air inlet pipe and the air outlet pipe penetrates through the cold water pipe and is in sealed connection with the side wall of the cold water pipe; a water inlet pipe is communicated with one side of the cold water tank and the position in the middle of the cold water tank; the cold water tank is communicated with two water outlet pipes; the two water outlet pipes are respectively close to the positions of two ends of the cold water tank; a water supply tank is arranged on one side of the charging barrel; the water supply tank is communicated with the water inlet pipe through a water supply pipe; the water supply pipe is communicated with a water pump; and a fan communicated with the air inlet pipe is arranged on one side of the cold water tank.

Through adopting above-mentioned technical scheme, set up the temperature that temperature control device can in time adjust feed cylinder and screw rod for the actual temperature of feed cylinder can accord with the most suitable temperature of extruding, is favorable to improving the product quality who extrudes. Through water-cooling and forced air cooling alternate use, be favorable to reducing the condition that water-cooling produced the rapid cooling, take away the temperature on feed cylinder surface through the forced air cooling, get into from the one end of feed cylinder at cold wind, when flowing out from the other end of feed cylinder, because the temperature on feed cylinder surface is high for the temperature of cold wind risees, adds the water-cooling at the feed cylinder middle part, can cool down the temperature of cold wind, improves the cooling effect of forced air cooling, further improves the cooling rate.

Preferably, a buffer tank is arranged between the water supply tank and the charging barrel; one side of the buffer tank is communicated with the water supply tank through a first connecting pipe, and the other side of the buffer tank is communicated with the water outlet pipe through a second connecting pipe; and a buffer component is arranged in the buffer box.

Through adopting above-mentioned technical scheme, set up the baffle-box and can cushion the water that flows after cooling the feed cylinder, increase the route of the rivers after the water-cooling for rivers after the water-cooling can in time dispel the heat, reentrant the feed water tank after the heat dissipation in, can conveniently continue to carry out circulative cooling to the feed cylinder with lower temperature.

Preferably, the buffer assembly comprises a first buffer plate fixed on the top wall in the buffer box and a second buffer plate fixed on the bottom wall in the buffer box; a plurality of first buffer plates are arranged at intervals along the length direction of the buffer box, and the lower end face of each first buffer plate is arranged at intervals with the inner bottom wall of the buffer box; a plurality of second buffer plates are arranged at intervals along the length direction of the buffer box, and the upper end surface of each second buffer plate is arranged at intervals with the inner top wall of the buffer box; the first buffer plate and the second buffer plate are arranged at intervals.

Through adopting above-mentioned technical scheme, rivers cushion through a plurality of first buffer boards and second buffer board in proper order for rivers slow down, improve the contact time of rivers and first buffer board and second buffer board, are favorable to accelerating the rivers cooling, make rivers get into the feed water tank in the time the temperature meet the end.

Preferably, the first buffer plate and the second buffer plate are both corrugated.

Through adopting above-mentioned technical scheme, corrugated first buffer board and second buffer board can further improve the resistance to rivers for the velocity of flow of rivers is slow, is favorable to improving the refrigerated speed of rivers.

Preferably, a plurality of fixing holes are formed in the first buffer plate and the second buffer plate.

Through adopting above-mentioned technical scheme, the flow path of rivers can be disturbed to the fixed orifices for rivers can be in the baffle-box with the abundant contact of buffering subassembly, thereby can make the buffering subassembly can be fast with the heat effluvium of rivers.

Preferably, a wind blocking ring is fixed on the inner side wall of the cold air box; the inner side wall of the wind-shield ring and the outer side wall of the charging barrel are arranged at intervals; the wind blocking rings are arranged in a plurality at intervals along the length direction of the cold air box.

Through adopting above-mentioned technical scheme, at the fixed ring that keeps out the wind of cold-blast box inside wall, the resistance that increase cold wind flows improves the time that cold wind stops in the cold-blast box to improve the time of cold wind and feed cylinder contact, make cold wind can take away the heat of feed cylinder. The ring that keeps out the wind can also improve the time with cold water contact for some temperature in the cold air can be taken away to cold water, makes cold air keep lower temperature and cools off the feed cylinder.

Preferably, the section of the cold water tank is annular; two guide pipes are arranged on the cold water tank; two ends of the guide pipe are respectively fixed with the inner side wall and the outer side wall of the cold water tank; two ends of the guide pipe respectively penetrate through the inner side wall and the outer side wall of the cold water tank; the end part of the air inlet pipe penetrates through a guide pipe and is connected with a fan; the end part of the air outlet pipe penetrates through the other guide pipe and extends to one side far away from the cold water tank.

Through adopting above-mentioned technical scheme, set up the stand pipe, can improve the sealed effect of cold water storage cistern for water is difficult for revealing to the cold wind incasement, can also conveniently install air-supply line and play tuber pipe.

Preferably, a fixing ring is fixed in the cold water tank; the two fixing rings are arranged at intervals along the length direction of the cold water tank, and the two fixing rings are close to the middle part of the cold water tank; the end face of the fixing ring is provided with a plurality of water guide holes.

Through adopting above-mentioned technical scheme, set up solid fixed ring for cold water can stop longer time at the middle part of cold water tank, thereby improve the time of cold water and cold air box contact, make cold water can be sufficient and the contact of cold air box, take away the heat in the cold wind.

In summary, the present application includes at least one of the following beneficial technical effects:

the temperature control device can adjust the temperature of the material cylinder and the screw rod in time, so that the actual temperature of the material cylinder can be consistent with the optimal extrusion temperature, and the quality of the extruded product can be improved;

the buffer tank is arranged to buffer water flowing out after the charging barrel is cooled, and the path of the water-cooled water flow is increased, so that the water-cooled water flow can dissipate heat in time and then enters the water supply tank after heat dissipation, and the charging barrel can be continuously cooled circularly at a lower water temperature conveniently;

set up solid fixed ring for cold water can stop longer time at the middle part of cold water tank, thereby improve the time of cold water and cold-blast box contact, make cold water can be sufficient and the contact of cold-blast box, take away the heat in the cold wind.

Drawings

Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present application.

Fig. 2 is a schematic structural diagram of a temperature control device according to an embodiment of the present application.

Description of reference numerals: 1. a charging barrel; 11. a heater; 2. a temperature control device; 21. a cold air box; 211. an air inlet pipe; 212. an air outlet pipe; 22. a cold water tank; 221. a guide tube; 222. a water inlet pipe; 223. a water outlet pipe; 23. a water supply tank; 231. a water supply pipe; 3. a wind-shield ring; 4. a fixing ring; 41. a water guide hole; 5. a fan; 6. a water pump; 7. a buffer tank; 71. a first connecting pipe; 72. a second connecting pipe; 73. a buffer assembly; 731. a first buffer plate; 732. a second buffer plate; 733. and (7) fixing holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a screw rod temperature control system for inflation film manufacturing machine. Referring to fig. 1 and 2, a screw temperature control system for a film blowing machine comprises a charging barrel 1, a heater 11 and a temperature control device 2. The screw is rotatably arranged in the charging barrel 1. The feed cylinder 1 is the multistage feed cylinder 1, and every section of feed cylinder 1 all overlaps outward and is equipped with heater 11. The temperature control device 2 is installed outside the heater 11 and used for adjusting the temperature of the heater 11 and keeping the temperature of the heating layer balanced.

Referring to fig. 2, the temperature control device 2 includes a cold water tank 21, a cold water tank 22, and a water supply tank 23. The cooling air box 21 is cylindrical and is fitted around the heater 11 in the circumferential direction. The length directions of the cold water tank 21 and the cold water tank 22 are both in accordance with the length direction of the barrel 1. An air inlet pipe 211 is fixed on the cold air box 21 and close to one end of the cold air box, an air outlet pipe 212 is fixed on the cold air box 21 and close to the other end of the cold air box, and the air inlet pipe 211 and the air outlet pipe 212 are communicated with the interior of the cold air box 21. Be fixed with a plurality of wind-break rings 3 on the inside wall of cold-blast box 21, and a plurality of wind-break rings 3 set up along the length direction interval of cold-blast box 21. The inside wall of wind-break ring 3 sets up with the lateral wall interval of feed cylinder 1, is favorable to improving the resistance that cold wind flows for cold wind can fully contact with the lateral wall of feed cylinder 1, thereby improves refrigerated effect.

Referring to fig. 1 and 2, the cross section of the cold water tank 22 is annular, and the cold water tank 22 is sleeved outside the cold air tank 21. Two fixing rings 4 are fixed in the cold water tank 22 at the middle of the cold water tank 22, and the fixing rings 4 are arranged at intervals along the length direction of the cold water tank 22. The end face of the fixing ring 4 is provided with a plurality of water guide holes 41 for guiding water flow to flow out. The fixing ring 4 can slow down water flow, so that the water flow can be fully contacted with the middle part of the cold air box 21, the temperature of cold air is reduced, and the cold water effect is further improved. Guide pipes 221 are fixed inside the cold water tank 22 and at positions close to the two ends of the cold water tank 22, the two ends of each guide pipe 221 are fixed to the inner side wall and the outer side wall of the cold water tank 22 respectively, and the two ends of each guide pipe 221 penetrate through the inner side wall and the outer side wall of the cold water tank 22 respectively. The end of the air inlet pipe 211 passes through one guide pipe 221 and is connected to the fan 5, and the end of the air outlet pipe 212 passes through the other guide pipe 221 and extends to a side away from the cold water tank 22. A water inlet pipe 222 is communicated with one side of the cold water tank 22 and the position in the middle of the cold water tank 22, and water outlet pipes 223 are communicated with the positions on the cold water tank 22 and close to the two ends of the cold water tank 22. A fan 5 is fixed on one side of the cold water tank 22, and an air outlet of the fan 5 is communicated with the air inlet pipe 211.

Referring to fig. 1, the water supply tank 23 is fixedly mounted on one side of the cartridge 1, the water supply tank 23 and the water inlet pipe 222 are communicated through a water supply pipe 231, and the water supply pipe 231 is communicated with the water pump 6. The water supply tank 23 supplies water to the cold water tank 22 in a circulating manner, so that the charging barrel 1 is conveniently cooled.

Referring to fig. 1 and 2, a buffer tank 7 is fixedly installed between the water supply tank 23 and the cartridge 1 in order to reduce the temperature of the water circulating in the water supply tank 23. One side of buffer tank 7 and feed water tank 23 are through first connecting pipe 71 intercommunication, the intercommunication has the water pump on the first connecting pipe 71, the opposite side of buffer tank 7 and outlet pipe 223 are through second connecting pipe 72 intercommunication, the tip of two outlet pipes 223 all communicates with second connecting pipe 72 for rivers after will cooling feed cylinder 1 let in to buffer tank 7 in buffer tank 7 and cushion the cooling back rethread to feed water tank 23, continue to provide cold water tank 22 and cool off feed cylinder 1. A buffer assembly 73 is fixedly installed in the buffer tank 7. The buffering component 73 comprises a first buffering plate 731 and a second buffering plate 732, the first buffering plate 731 and the second buffering plate 732 are both corrugated, and a plurality of fixing holes 733 are formed in the first buffering plate 731 and the second buffering plate 732 and used for dividing water flow, so that the water flow can be sufficiently cooled in the buffering box 7. The first buffer plate 731 and the second buffer plate 732 are both provided in plurality at intervals along the length direction of the buffer tank 7, and the first buffer plate 731 and the second buffer plate 732 are arranged in a staggered manner. The first buffer plate 731 is fixed to the inner top wall of the buffer box 7, the second buffer plate 732 is fixed to the inner bottom wall of the buffer box 7, the lower end face of the first buffer plate 731 is spaced from the inner bottom wall of the buffer box 7, and the upper end face of the second buffer plate 732 is spaced from the inner top wall of the buffer box 7.

The implementation principle of the screw temperature control system for the film blowing machine is as follows: when the temperature was too high in feed cylinder 1, through starting water pump 6 and fan 5, fan 5 ventilates in to cold-blast box 21, and cold wind flows and flows along the length direction of cold-blast box 21, keeps off under the effect of ring, with feed cylinder 1 full contact, improves the cooling effect. The water pump 6 pumps out the water in the water supply tank 23 and leads the water into the cold water tank 22, cold water enters from the middle of the cold water tank 22, heat in cold air is taken away, and the cold air can keep a low temperature to cool the charging barrel 1. The cool air stream is finally discharged to the atmosphere through the air outlet pipe 212. The cold water flows into the buffer tank 7, fully contacts with the first buffer plate 731 and the second buffer plate 732, and flows into the water supply tank 23 after the temperature is reduced, so that the next cooling cycle is conveniently performed. The temperature control system has the advantages of high cooling speed and good cooling effect, and can greatly improve the quality of extruded products.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a screw rod temperature control system for inflation film manufacturing machine, includes feed cylinder (1), locates heater (11) of feed cylinder (1) circumference, its characterized in that: the charging barrel (1) is circumferentially provided with a temperature control device (2); the temperature control device (2) comprises a cold air box (21) sleeved outside the heater (11) and a cold water box (22) sleeved outside the cold air box (21); the cold air box (21) is communicated with an air inlet pipe (211) and an air outlet pipe (212); the air inlet pipe (211) and the air outlet pipe (212) are respectively close to two ends of the cold air box (21); one ends of the air inlet pipe (211) and the air outlet pipe (212) penetrate through the cold water pipe and are in sealed connection with the side wall of the cold water pipe; a water inlet pipe (222) is communicated with one side of the cold water tank (22) and is positioned in the middle of the cold water tank (22); the cold water tank (22) is communicated with two water outlet pipes (223); the two water outlet pipes (223) are respectively close to the positions of two ends of the cold water tank (22); a water supply tank (23) is arranged on one side of the charging barrel (1); the water supply tank (23) is communicated with the water inlet pipe (222) through a water supply pipe (231); the water supply pipe (231) is communicated with a water pump (6); and a fan (5) communicated with the air inlet pipe (211) is arranged on one side of the cold water tank (22).

2. The screw temperature control system for the film blowing machine according to claim 1, characterized in that: a buffer tank (7) is arranged between the water supply tank (23) and the charging barrel (1); one side of the buffer tank (7) is communicated with the water supply tank (23) through a first connecting pipe (71), and the other side of the buffer tank (7) is communicated with the water outlet pipe (223) through a second connecting pipe (72); a buffer component (73) is arranged in the buffer box (7).

3. The screw temperature control system for the film blowing machine according to claim 2, characterized in that: the buffer assembly (73) comprises a first buffer plate (731) fixed on the inner top wall of the buffer box (7) and a second buffer plate (732) fixed on the inner bottom wall of the buffer box (7); a plurality of first buffer plates (731) are arranged at intervals along the length direction of the buffer box (7), and the lower end surface of each first buffer plate (731) is arranged at intervals with the inner bottom wall of the buffer box (7); a plurality of second buffer plates (732) are arranged at intervals along the length direction of the buffer box (7), and the upper end surface of each second buffer plate (732) is arranged at intervals with the inner top wall of the buffer box (7); the first buffer plate (731) and the second buffer plate (732) are arranged at intervals.

4. The screw temperature control system for the film blowing machine according to claim 3, characterized in that: the first buffer plate (731) and the second buffer plate (732) are both corrugated.

5. The screw temperature control system for the film blowing machine according to claim 3, characterized in that: the first buffer plate (731) and the second buffer plate (732) are both provided with a plurality of fixing holes (733).

6. The screw temperature control system for the film blowing machine according to claim 1, characterized in that: a wind blocking ring (3) is fixed on the inner side wall of the cold air box (21); the inner side wall of the wind-shield ring (3) and the outer side wall of the charging barrel (1) are arranged at intervals; the wind blocking rings (3) are arranged in a plurality at intervals along the length direction of the cold air box (21).

7. The screw temperature control system for the film blowing machine according to claim 1, characterized in that: the section of the cold water tank (22) is annular; two guide pipes (221) are arranged on the cold water tank (22); two ends of the guide pipe (221) are respectively fixed with the inner side wall and the outer side wall of the cold water tank (22); two ends of the guide pipe (221) respectively penetrate through the inner side wall and the outer side wall of the cold water tank (22); the end part of the air inlet pipe (211) penetrates through a guide pipe (221) and is connected with a fan (5); the end of the air outlet pipe (212) penetrates through the other guide pipe (221) and extends to one side far away from the cold water tank (22).

8. The screw temperature control system for the film blowing machine according to claim 1, characterized in that: a fixing ring (4) is fixed in the cold water tank (22); the two fixing rings (4) are arranged at intervals along the length direction of the cold water tank (22), and the two fixing rings (4) are close to the middle part of the cold water tank (22); the end face of the fixing ring (4) is provided with a plurality of water guide holes (41).