Constant temperature device for discharging die of film blowing machine

Abstract

The utility model discloses a constant temperature device for a discharging die of a film blowing machine, which comprises a flow guide sleeve and an air blower, the flow guide sleeve is fixedly sleeved on the outer side of the discharging die to form an annular flow guide cavity arranged on the outer side of the discharging die, the bottom side of the annular flow guide cavity is sealed, and the top side of the annular flow guide cavity is communicated with the atmosphere; an air inlet of the air blower is connected with cooling air, and an air outlet of the air blower is connected to the outer bottom side of the flow guide sleeve through an air guide pipe to communicate with the annular flow guide cavity; compared with the prior art, the cooling device is mainly composed of the air blower, the air guide pipe and the flow guide sleeve, cooling air is guided into the annular flow guide cavity through the air guide pipe after being sucked in by the air blower, and the cooling air rapidly flows out of the top side of the annular flow guide cavity so as to rapidly take away heat generated on the discharging mold and cool the discharging mold; therefore, the temperature of the discharging die is constant within a required temperature range so as to meet the production requirement, and the discharging die is simple in structural composition.

Description

Technical Field

[0001] The utility model relates to the technical field of mold cooling structures, in particular to a constant temperature device for a discharge mold of a film blowing machine. Background Art

[0002] Film blowing is a plastic processing method that refers to a plastic processing technology that heats and melts plastic particles and then blows them into a film. It usually involves extruding the polymer into the discharge mold of a film blowing machine to form the product, which is then cooled and shaped.

[0003] Usually, the discharge mold of a film blowing machine needs to be controlled within a certain temperature range. For example, CN218701234U discloses a cooling circulation device for a film blowing machine, including a mold body and a mold head, the mold head is arranged on the top side of the mold body, a first cooling plate is fixedly mounted on the outside of the mold body, a second cooling plate is fixedly mounted on the outside of the mold head, a cooling nozzle is connected to the top side of the second cooling plate, a film discharge pipe is arranged inside the cooling nozzle, the bottom end of the film discharge pipe passes through the bottom side of the second cooling plate, a liquid discharge pipe is provided on the right side of the bottom of the first cooling plate, the right end of the liquid discharge pipe is connected to a water tank, a first water storage cavity is provided in the wall cavity of the second cooling plate, a connecting groove is dug on the right side of the water tank, a heat conducting plate is fixedly connected between the inner walls of the connecting groove, a partition is provided at the lower left side of the heat conducting plate, a water pump is provided under the partition, and the output end of the water pump is fixedly connected to the liquid discharge pipe.

[0004] The film blowing machine cooling circulation device cools the die head to control the temperature within a certain range by cooperating with the first cooling plate, the second cooling plate, the cooling nozzle, the liquid outlet pipe and the water tank. Its structure is relatively complex. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a constant temperature device for a discharge mold of a film blowing machine, so as to solve the problem in the prior art that the structure for cooling the discharge mold of the film blowing machine is relatively complex.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: a constant temperature device for a discharge mold of a film blowing machine, comprising:

[0007] A guide sleeve, wherein the guide sleeve is fixedly mounted on the outside of the discharge mold to form an annular guide cavity outside the discharge mold, wherein the bottom side of the annular guide cavity is sealed and the top side thereof is in communication with the atmosphere;

[0008] The blower has an air inlet connected to cooling air and an air outlet connected to the outer bottom side of the guide sleeve through an air guide pipe to communicate with the annular guide cavity.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] This constant temperature device is mainly composed of a blower, an air guide pipe and a guide sleeve. The blower draws in cooling air and then guides it into the annular guide cavity through the air guide pipe. The cooling air quickly flows out from the top side of the annular guide cavity to quickly take away the heat generated on the discharge mold, cool the discharge mold, and keep the discharge mold constant within a required temperature range to meet production needs. Its structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0012] Figure 2 for Figure 1 A partial cross-sectional view of .

[0013] The figure marks in the drawings of the specification include: discharge mold 1, guide sleeve 2, blower 3, annular guide cavity 4, air guide pipe 5, annular air distribution pipe 6, air distribution hole 7, protective cover 8, adjustment cylinder 9, adjustment assembly 10, support sleeve 101, guide rod 102, and adjustment rod 103. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below through specific implementation methods:

[0015] like Figure 1 and Figure 2 As shown, an embodiment of the present invention proposes a constant temperature device for a discharge mold of a film blowing machine, comprising a guide sleeve 2 and a blower 3. The guide sleeve 2 is fixedly mounted on the outside of the discharge mold 1 to form an annular guide cavity 4 located outside the discharge mold 1. The bottom side of the annular guide cavity 4 is sealed and its top side is connected to the atmosphere; the air inlet of the blower 3 is connected to cooling air and its air outlet is connected to the outer bottom side of the guide sleeve 2 through an air guide pipe 5 to communicate with the annular guide cavity 4.

[0016] This constant temperature device is mainly composed of a blower 3, an air guide pipe 5 and a guide sleeve 2. The blower 3 draws in cooling air and then introduces it into the annular guide cavity 4 through the air guide pipe 5. The cooling air quickly flows out from the top side of the annular guide cavity 4 to quickly take away the heat generated on the discharge mold 1, cool the discharge mold 1, and keep the discharge mold 1 constant within a required temperature range to meet production needs. Its structure is simple.

[0017] The cooling air drawn in by the blower 3 may be directly the cold air from the outside, or may be obtained by cooling the cold air from the outside through a cooler, depending on the specific usage requirements.

[0018] The blower 3 may be a blower.

[0019] like Figure 2As shown, according to another embodiment of the present invention, a constant temperature device for a discharge mold of a film blowing machine is provided, wherein an annular air distribution pipe 6 is arranged on the bottom inner side of the annular guide cavity 4 and is sleeved on the outside of the discharge mold 1. The annular air distribution pipe 6 is connected to the air guide pipe 5, and a plurality of air distribution holes 7 are evenly distributed on the annular air distribution pipe 6 along its circumferential direction. The cooling air introduced by the air guide pipe 5 through the annular air distribution pipe 6 is relatively evenly distributed on the outside of the discharge mold 1, so that the temperature distribution in the discharge mold 1 is relatively uniform, which is beneficial to the product molding in the discharge mold 1.

[0020] Among them, each of the air distribution holes 7 is arranged obliquely and is arranged toward the discharge mold 1, so that the cooling air discharged from the annular air distribution pipe 6 can contact the discharge mold 1 more quickly, and the discharge mold 1 can be cooled more quickly.

[0021] It should be noted that the diameter of the air distribution holes 7 in the accompanying drawings is only a schematic diagram. In actual use, the diameter of the air distribution holes 7 can be designed for suitability according to the need to cool the discharge mold 1 to a constant temperature range.

[0022] In order to prevent impurities from falling into the annular guide cavity 4 from the top and clogging the air holes 7, Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, a constant temperature device is used for a discharge mold of a film blowing machine, wherein the fixed sleeve on the discharge mold 1 is provided with a protective cover 8 located above the guide sleeve 2, the edge of the protective cover 8 extends to the outside of the guide sleeve 2, and the protective cover 8 and the guide sleeve 2 are arranged at intervals so that a heat dissipation channel is formed between the protective cover 8 and the guide sleeve 2.

[0023] Specifically, the protective cover 8 forms a protection above the guide sleeve 2 to prevent impurities from falling into the annular guide cavity 4 from the top and clogging the air distribution holes 7; the blower 3 draws in the cooling air and introduces it into the annular air distribution pipe 6 through the air guide pipe 5, and then introduces it into the annular guide cavity 4 through the air distribution holes 7. The cooling air flows upward in the annular guide cavity 4 and is discharged from the heat exhaust channel to take away the heat generated on the discharge mold 1, cool the discharge mold 1, and keep the discharge mold 1 constant within a required temperature range to meet production needs.

[0024] like Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, a constant temperature device is used for a discharge mold of a film blowing machine, wherein an adjustment cylinder 9 is arranged on the outer edge of the guide sleeve 2 to slide close to or away from the protective cover 8. The adjustment cylinder 9 is slid to make it move closer to or away from the protective cover 8 on the outer side of the guide sleeve 2 to adjust the size of the heat exhaust channel, and the heat dissipation capacity of the discharge mold 1 can be adjusted to meet the needs of the discharge mold 1 to be constant in different temperature ranges for different products.

[0025] In order to facilitate the adjustment of the sliding of the adjustment cylinder 9, the adjustment cylinder 9 is provided with an adjustment assembly 10 that drives its sliding. In this embodiment, the adjustment assembly 10 is arranged on the bottom side of the adjustment cylinder 9 for a reasonable arrangement. The adjustment assembly 10 includes a support sleeve 101, a guide rod 102, and an adjustment rod 103. The support sleeve 101 is fixedly mounted outside the guide sleeve 2 and is located on the side of the adjustment cylinder 9 away from the protective cover 8; one end of the guide rod 102 is fixedly connected to the support sleeve 101 and the other end is slidably connected to the adjustment cylinder 9; the adjustment rod 103 is rotatably connected to the support sleeve 101 and is threadedly connected to the adjustment cylinder 9.

[0026] When adjusting the size of the heat exhaust channel, the adjusting rod 103 is rotated to guide the adjusting cylinder 9 through the guide rod 102 to make the adjusting cylinder 9 slide toward or away from the protective cover 8 to complete the size adjustment of the heat exhaust channel.

[0027] The adjusting rod 103 can be rotated manually or by a motor; however, both require heat insulation treatment using existing heat insulation technology to prevent the gripping position of the adjusting rod 103 or the motor from being overheated.

[0028] It should be noted that the thermostat device may not require the adjustment component 10 . When the size of the heat exhaust channel needs to be adjusted, an additional tool is used to slide the adjustment cylinder 9 .

[0029] When using this thermostat:

[0030] Turn the adjustment rod 103 according to the needs to adjust the size of the heat exhaust channel;

[0031] Then start the blower 3, draw in the cooling air and introduce it into the annular air distribution pipe 6 through the air guide pipe 5, and then introduce it into the annular guide cavity 4 through the air distribution hole 7. The cooling air flows upward in the annular guide cavity 4 and is discharged from the heat exhaust channel to take away the heat generated on the discharge mold 1, cool the discharge mold 1, and keep the discharge mold 1 constant within a required temperature range to meet production needs.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A constant temperature device for a discharge mold of a film blowing machine, characterized in that: include: A guide sleeve, wherein the guide sleeve is fixedly mounted on the outside of the discharge mold to form an annular guide cavity outside the discharge mold, wherein the bottom side of the annular guide cavity is sealed and the top side thereof is in communication with the atmosphere; The blower has an air inlet connected to cooling air and an air outlet connected to the outer bottom side of the guide sleeve through an air guide pipe to communicate with the annular guide cavity.

2. A constant temperature device for a discharge mold of a film blowing machine according to claim 1, characterized in that: An annular air distribution pipe is arranged on the bottom side of the annular guide cavity and is sleeved outside the discharge mold. The annular air distribution pipe is connected to the air guide pipe, and a plurality of air distribution holes are evenly distributed on the annular air distribution pipe along its circumferential direction.

3. A constant temperature device for a discharge mold of a film blowing machine according to claim 2, characterized in that: Each of the air distribution holes is arranged obliquely and faces the discharge mold.

4. A constant temperature device for a discharge mold of a film blowing machine according to any one of claims 1 to 3, characterized in that: The fixed sleeve on the discharge mold is provided with a protective cover located above the guide sleeve, the edge of the protective cover extends outside the guide sleeve, and the protective cover and the guide sleeve are arranged at intervals so that a heat exhaust channel is formed between the protective cover and the guide sleeve.

5. A constant temperature device for a discharge mold of a film blowing machine according to claim 4, characterized in that: An adjustment cylinder is arranged on the outer edge of the guide sleeve so as to slide towards or away from the protective cover.

6. A constant temperature device for a discharge mold of a film blowing machine according to claim 5, characterized in that: The adjusting cylinder is provided with an adjusting component for driving the adjusting cylinder to slide.

7. A constant temperature device for a discharge mold of a film blowing machine according to claim 6, characterized in that: The adjustment component includes: A support sleeve, wherein the support sleeve fixing sleeve is arranged outside the guide sleeve and is located on the side of the regulating cylinder away from the protective cover; A guide rod, one end of which is fixedly connected to the support sleeve and the other end of which is slidably connected to the adjustment cylinder; An adjusting rod is rotatably connected to the supporting sleeve and is threadedly connected to the adjusting cylinder.

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