TWM531370U - Temperature reducing device of extruder (injection molding machine) tube - Google Patents

Description

Cooling device for taking out the casing

The present invention relates to a cooling device for a slamming machine, in particular, a cooling device for a venting (outlet) casing that is provided with a ring-shaped groove on the outer edge of the casing of the cocking machine. .

The casing of the forming machine can be divided into several heating sections such as a feeding section, a compression section, a metering section and a mixing section, and the plastic raw material is fed by particles or fragments to be compressed and melted. The fluid, the metering, the push to the color mixing, the uniform mixing, and the final pressing (shooting) molding; since the forming function of the sleeve of the molding machine in each heating section is not the same, each heating section has its own different temperature conditions. . The heating structure of the sleeve of the forming machine is taken out, as shown in FIG. 1A, and the structure is covered with a plurality of independent heaters 911 to cover the sleeve 912, and the heating sections of the sleeve 912 are different. Warm up. However, the plastic has a certain heating range. When the heating exceeds this range, the plastics in the sleeve 912 will decompose the product due to overheating. In order to solve this deficiency, the manufacturer adds a plurality of blowing mechanisms 913 to the sleeve 912. The air is forcedly blown to the sleeve 912 so that the temperature of the plastic in the sleeve 912 does not rise after the heating temperature reaches a predetermined level.

Further, as shown in Figs. 1B to 1C, the structure of the sleeve 912 of the molding machine is shown. Since the heater 911 is attached to the outer periphery of the sleeve 912, the heater 911 is heated during the heating process. The heat will be transmitted to the outer edge of the sleeve 912 via its inner edge and further transmitted to the plastic in the sleeve 912, the heat transfer rate is very fast; however, in the air supply cooling stage, the cold air is in the heater 911 and the casing There is not much space between the 912, so the heat of the plastic in the sleeve 912 cannot be quickly taken away, which naturally causes overheating deterioration of the plastic product. In order to improve the circulation of the cold air between the heater 911 and the sleeve 912, a plurality of longitudinal air guiding grooves are arranged on the inner wall of the heater 911 to guide the cold air to flow along the air guiding groove. The heat of the plastic in the sleeve 912 is taken away; however, since the air duct is disposed in the heater 911 itself as a heat source, the cold air will preferentially cool the residual heat of the heater, and the heat of the plastic in the sleeve cannot be quickly taken away. Therefore, the provision of the air guiding groove on the inner wall of the heater 911 is not the most effective countermeasure for improvement.

The reason is that the main purpose of this creation is to provide a cooling device that can quickly remove the plastic heat from the casing of the machine, so that the plastic is maintained at a uniform temperature to avoid the thermal decomposition of its molecules. Lead to deterioration of the product.

In order to achieve the above objectives, the technical means adopted by the present invention include: a casing, which is a long tubular body, which is divided into a plurality of heating sections on its axis, and is separately manufactured on the outer edge of the casing of each heating section. a plurality of annular grooves; a screw pivotally disposed on the inner edge of the sleeve, which is driven by a driving device to rotate freely; and a plurality of array heaters respectively wrapped around the annular groove of the sleeve The sleeve is heated to have a bottom portion forming an air inlet portion, and the top edge forms an air outlet portion; and a plurality of casing air hoods having the same number as the heating portion, the lower end of which is open The air inlet has a plurality of exhaust holes at the upper end thereof, and the sleeve hood is disposed outside the heater; a plurality of fan groups corresponding to the heating section are disposed at the lower end of each sleeve hood. Each of them has a centrifugal fan blade, a motor and a bellows, and the bellows is connected to the air inlet; a control device is used to control the operation of the heater and the fan group motor.

According to the foregoing feature, the heater includes a heating sheet and a heating sheet pressing plate; the heating sheet has a circular arc shape, the lower end of which is an open slot, and the upper end is provided with at least one air outlet hole; the electric heating plate pressing plate The bottom end is provided with at least one air inlet hole, the upper end of which is a second opening slot, and the two sides of the second opening slot extend to a top edge of the top edge; the electric heating piece is fixed by a fixing a screw is locked on the inner edge of the heating plate pressing plate, and the shoulder is fixed by a bolt, so that the combined electric heating piece and the electric heating plate pressing plate are wrapped around the pipe wall of the casing, and the opening groove and the air inlet hole are The air inlet portion is formed under the sleeve, and the second opening groove and the air outlet hole form the air outlet portion above the sleeve.

Thereby, the plastic enters from one end of the sleeve, and the plastic is melted by the rotary extrusion of the screw and the heating of the heater. When the plastic of each heating section is overheated, the heater stops acting and the fan motor is started. The cold air will enter the casing hood from the bellows, and enter the air inlet portion, and the heat of the superheated plastic inside the casing edge is taken along the annular portion along the annular groove to be carried away by the air outlet portion, and then The ventilating holes are discharged to the atmosphere, and the plastic in each heating section is maintained at a uniform temperature.

With the help of the pre-existing feature, the creation system manufactures a plurality of annular grooves on the outer edge of the casing, so that the cold air sent by the fan group flows along the annular groove, and the heat of the plastic inside the casing is overheated. By walking, the plastic is maintained at a uniform temperature, so that the deterioration of the product due to decomposition of the molecules due to overheating can be avoided.

First, please refer to FIG. 2 to FIG. 3, which is a structural diagram of the cooling device for the casing of the creation, including: a casing 10, which is a long pipe body, and is divided into six on the axis thereof. Heating sections A to F, but not limited thereto, and the six heating sections are respectively used as a feeding section, a compression section, a metering section and a kneading section of plastic, and the present invention is to make the plastic of the inner edge of the casing 10 rapid. Cooling, in the outer edge of the casing 10 of each heating section, respectively, a plurality of mutually parallel annular grooves 11 are formed, and the two adjacent annular grooves 11 are arranged as a temperature rising and lowering unit; (not shown), is pivotally disposed on the inner edge of the sleeve 10, and is driven by a driving device (not shown) to rotate the screw in the sleeve 10; the number of the multi-array heaters 20 is in accordance with the lifting The number of temperature units is configured, and each set of heaters 20 is separately coated with two annular grooves 11 to heat the sleeve 10 while maintaining a predetermined interval between each heater 20. And the bottom edge thereof forms an air inlet portion, and the top edge forms an air outlet portion; a plurality of casing gases corresponding to the heating section 50, in this creation, there are six groups, the lower end of which is an open air inlet 51, and the upper end is provided with a plurality of exhaust holes 52, the sleeve hood 50 is sleeved on the outer edge of the heater 20; A plurality of fan groups 30 equal to the heating section are six groups in the present creation. The fan group 30 is disposed under each casing hood 50, and each has a centrifugal fan blade 31, a motor 32 and a wind. The box 33 is connected to the air inlet 51; a control device 40 is used to control the operation of the heater 20 and the fan unit motor 32.

Thereby, the plastic enters from one end of the sleeve 10, is rotated by the screw (not shown) and heated by the heater 20 to melt the plastic. Once the plastic of each heating section is overheated, the control device 40 Controlling the heater 20 to stop operating, and simultaneously starting the fan group motor 32, cold air will enter the casing hood 50 from the bellows 33 and the air inlet 51, and a part of the cold air enters the inlet of the heater 20. After the portion, the heat of the superheated plastic is taken away from the air outlet portion of the heater 20 along the annular groove 11 and then discharged to the atmosphere through the exhaust hole 52, thereby heating each other. The plastic in the section is maintained at a uniform temperature.

4 to 5 show the structure of the creation sleeve 10 and the heater 20. Each heater 20 includes a heating sheet 21 and a heating sheet pressing plate 22; the heating sheet 21 has a circular arc shape, and the lower end thereof is a The upper end of the opening 211 is provided with at least one air outlet hole 212; the electric heating plate pressure plate 22 is also arc-shaped, and the lower end is provided with at least one air inlet hole 221, and the upper end thereof is a second opening groove 222, and A shoulder 223 extends from each of the two sides of the second opening slot 222 to the top edge; the heating sheet 21 is fastened to the inner edge of the heating plate pressing plate 22 by a fixing screw 23, and the shoulder is fixed by the bolt 24. 223, the combined heating sheet 21 and the heating sheet pressing plate 22 are wrapped around the tube wall of the sleeve 10, and the opening groove 211 and the air inlet hole 221 form the air inlet portion 25 under the sleeve 10, and the air inlet portion 25 is formed. The second opening groove 222 and the air outlet hole 212 form the air outlet portion 26 above the sleeve 10 .

FIG. 6 is a schematic view showing the flow of cold air in the cooling device of the present invention, wherein the wind box 33 of the fan unit 30 is connected to the air inlet 51, and the heater 20 is wrapped around the annular groove 11 of the sleeve 10, and the The casing hood 50 is disposed on the outer edge of the heater 20; the cold air A0 is sent into the wind box 33 by the centrifugal fan blade 31, and enters the casing hood 50 through the air inlet 51, and is partially cooled. After the air A0 enters the air inlet portion 25 of the heater 20, it flows upward along the annular groove 11, and the cold air A0 exchanges heat with the plastic melted at the inner edge of the sleeve 10 to become hot air A1, and then the air is discharged. The portion 29 is sent to the upper edge of the casing hood 50, and is discharged to the atmosphere via the vent hole 52; the plastic is maintained because the heat of the plastic overheating is carried away by the cold air A0 flowing in the annular groove 11 At the same temperature, it is possible to prevent the deterioration of the product due to thermal decomposition of its molecules.

In summary, the structure revealed by this creation is unprecedented, and it can achieve the improvement of efficacy, and it can be used for industrial utilization. It fully complies with the new patent requirements, and invites the bureau to grant patents to encourage innovation. There is no sense of morality.

However, the drawings and descriptions disclosed above are only preferred embodiments of the present invention, and modifications or equivalent changes made by those skilled in the art in accordance with the spirit of the present invention should still be included in the scope of the patent application.

10‧‧‧ casing
11‧‧‧ring groove
20‧‧‧heater
21‧‧‧Electric heating film
211‧‧‧Open slot
212‧‧‧Air outlet
22‧‧‧Electric heating plate
221‧‧‧Inlet hole
222‧‧‧Second open slot
223‧‧‧ shoulder
23‧‧‧ fixing screws
24‧‧‧ bolt
25‧‧‧Intake Department
26‧‧‧Outlet Department
30‧‧‧fan group
31‧‧‧ Centrifugal fan blades
32‧‧‧Motor
33‧‧‧ bellows
40‧‧‧Control device
50‧‧‧ casing hood
51‧‧‧Air inlet
52‧‧‧Air vents
A0‧‧‧cold air
A1‧‧‧hot air

Figure 1A is a schematic view showing the structure of a casing cooling device for a conventional plastic forming machine. Figure 1B is a schematic view showing the structure of a conventional plastic forming machine casing. Figure 1C is a cross-sectional view of a conventional plastic forming machine casing. Figure 2: Schematic diagram of the structure of the creation sleeve. Figure 3: Schematic diagram of the structure of the plastic cooling machine casing cooling device. Figure 4A is an exploded perspective view of the present heater. Fig. 4B is an assembled perspective view of the present heater. Figure 5: A perspective view of the assembly of the creation sleeve and the heater. Figure 6: Schematic diagram of the cold air flow of the present cooling device.

10‧‧‧ casing

11‧‧‧ring groove

20‧‧‧heater

30‧‧‧fan group

31‧‧‧ Centrifugal fan blades

32‧‧‧Motor

33‧‧‧ bellows

40‧‧‧Control device

50‧‧‧ casing hood

51‧‧‧Air inlet

52‧‧‧Air vents

Claims (2)

The utility model relates to a cooling device for squeezing out the casing, which comprises: a casing, which is a long tubular body, which is divided into several heating sections on its axis, and the outer edge of the casing of each heating section is divided into Do not set a plurality of annular grooves; a screw is pivotally disposed on the inner edge of the sleeve, and is driven by a driving device to rotate freely; a plurality of array heaters are respectively wrapped around the annular recess of the sleeve The outer edge of the groove is heated to the sleeve, and the bottom edge forms an air inlet portion, and the top edge forms an air outlet portion; a plurality of casing air hoods having the same number as the heating portion, the lower end of which is an opening The air inlet of the shape has a plurality of exhaust holes at the upper end thereof, and the sleeve hood is disposed on the outer edge of the heater; a plurality of fan groups corresponding to the heating section are disposed on the casing hoods Below, each has a centrifugal fan blade, a motor and a bellows, and the bellows is connected to the air inlet; a control device is used to control the operation of the heater and the fan motor; thereby, the plastic Entering from one end of the sleeve, through which the screw is rotated The heating of the extrusion and the heater causes the plastic to melt, and once the plastic of each heating section is overheated, the heater stops acting and the fan motor is started, and the cold air will enter the casing hood from the bellows. After entering the air inlet portion, the heat of the superheated plastic on the inner edge of the sleeve is taken along the annular portion along the annular groove, and then discharged to the atmosphere through the exhaust hole, thereby further heating the heating zone. The plastic in the section is maintained at a uniform temperature. The device of claim 1, wherein the heater comprises a heating sheet and a heating plate pressing plate; the heating piece has a circular arc shape, and the lower end is an opening. The upper end of the slot is provided with at least one air outlet hole; the electric heating plate pressure plate is also arc-shaped, and the lower end is provided with at least one air inlet hole, the upper end of which is a second opening slot, and the second opening slot is two Each of the sides extends to a shoulder portion; the electric heating piece is locked on the inner edge of the heating plate pressing plate with a fixing screw, and the combined electric heating piece and the electric heating plate pressing plate are covered by bolts to lock the shoulder portion. The air inlet portion is formed on the pipe wall of the casing, and the air inlet portion is formed under the casing, and the second opening groove and the air outlet hole form the air outlet portion above the casing.