CN209888138U - Auxiliary cooling mechanism of film blowing equipment - Google Patents
Auxiliary cooling mechanism of film blowing equipment Download PDFInfo
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- CN209888138U CN209888138U CN201920409520.6U CN201920409520U CN209888138U CN 209888138 U CN209888138 U CN 209888138U CN 201920409520 U CN201920409520 U CN 201920409520U CN 209888138 U CN209888138 U CN 209888138U
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Abstract
An auxiliary cooling mechanism of a film blowing device comprises a rack, wherein a film blowing die head is installed on the rack, a cooling air ring is arranged above the film blowing die head, two auxiliary cooling air boxes are arranged between the cooling air ring and the film blowing die head, opposite surfaces of the two auxiliary cooling air boxes are respectively inwards recessed to form an air outlet wall with a semicircular horizontal section, and a plurality of air outlet micropores are formed in the air outlet wall; the semicircular air outlet walls of the two auxiliary cooling air boxes are combined to form a cylinder shape; a cooling fan and a serpentine water pipe are arranged in each auxiliary cooling air box, the front surface of each cooling fan faces to the semicircular air outlet wall, and the serpentine water pipe is positioned at the back of the cooling fan; and the box wall of one side of each auxiliary cooling air box, which is positioned at the back of the cooling fan, is an air inlet wall, and an air inlet is formed in the air inlet wall. The utility model discloses can carry out auxiliary cooling to the membrane bubble before the membrane bubble reachs the cooling wind ring.
Description
Technical Field
The utility model belongs to the technical field of blown film equipment, especially, relate to a blown film equipment auxiliary cooling mechanism.
Background
The plastic film can be produced by adopting a film blowing machine process. Fig. 1 shows that the inflation film manufacturing machine is equipped with die head 1, and the die head is equipped with annular extrusion mouth 11, and the top that is close to die head 1 is equipped with cooling air ring 2, and cooling air ring 2 is equipped with annular air outlet, and its production process is as follows: the molten plastic material is extruded by the circular ring-shaped extrusion opening 11 of the die head and then moves upwards, and is cooled by cold air blown out from the air outlet of the cooling air ring in the operation process to be cooled and condensed.
The plastic film bubble is extruding the back from the ring shape extrusion opening, need pass through the inflation of certain degree, makes the coating material attenuation, diameter grow, and the inflation must go on before the bubble condensation, and the inflation process can not be too impatient in addition, need pass through a slow time process, and the bubble still keeps constantly upwards moving in this section of time, therefore the ring shape of die head is extruded the mouth 11 and is cooled off and need have a longer section vertical space distance between the wind ring 2.
On the other hand, in the initial stage of each film blowing, when the front end of the bubble blank is just extruded from the head, the foremost end of the bubble blank must be pulled by a worker to move up rapidly until the foremost end of the bubble blank passes through the opened pulling nip roller, and the pulling nip roller 4 is closed at an appropriate timing to form a closed bubble, and the closed state is shown in fig. 1, and this process is called "bubbling".
Among the existing blown film equipment, in order to facilitate the foremost quick travel that pulls the film bubble base at the foaming process, blow the space between membrane mould and the cooling wind ring and keep for spaciously and open, this section space does not obtain make full use of promptly, and the film bubble just begins to cool off when waiting to move to the cooling wind ring air outlet. In order to increase the cooling speed of the film (the cooling speed of the film determines the production speed of the film blowing equipment to a certain extent), people only need to increase the blowing speed of the cooling air ring to hope to increase the cooling speed of the film, but the air speed is too high, which in turn easily causes instability of the film bubble, and affects the film blowing forming quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned shortcoming and provide a blown film equipment auxiliary cooling mechanism, it can carry out auxiliary cooling to the film bubble before the film bubble reachs the cooling wind ring.
The purpose can be realized according to the following scheme: an auxiliary cooling mechanism of a film blowing device comprises a frame, wherein a film blowing die head is arranged on the frame, the film blowing die head is provided with an annular extrusion port, a cooling air ring is arranged above the film blowing die head, and the cooling air ring is provided with an annular air outlet; the opposite surfaces of the two auxiliary cooling air boxes are respectively inwards recessed to form an air outlet wall with a semicircular horizontal section, and the air outlet wall is provided with a plurality of air outlet micropores; after the two auxiliary cooling air boxes are combined together face to face, the two auxiliary cooling air boxes are symmetrically arranged left and right, and semicircular air outlet walls of the two auxiliary cooling air boxes are combined to form a cylinder shape; a cooling fan and a serpentine water pipe are arranged in each auxiliary cooling air box, the front surface of each cooling fan faces to the semicircular air outlet wall, and the serpentine water pipe is positioned at the back of the cooling fan; one box wall of each auxiliary cooling air box, which is positioned at the back of the cooling fan, is an air inlet wall, and the air inlet wall is provided with an air inlet; a water inlet and a water outlet of the snakelike water pipe are respectively arranged on the wall of the cooling air box; the water inlet of the snakelike water pipe is connected with a water inlet hose, and the water outlet of the snakelike water pipe is connected with a water outlet hose.
Preferably, the two auxiliary cooling air boxes are connected together in a relatively rotatable manner by a hinge, and a rotating shaft of the hinge is vertical.
The utility model has the advantages of it is following and effect:
before the film bubble foams, the two auxiliary cooling air boxes can be moved away as far as possible to keep away from the central axis of the film blowing die head so as to avoid hindering the foaming operation of workers; after the bubble foaming is accomplished, can fold two auxiliary cooling bellows and start, like this, the back is extruded by the ring shape extrusion orifice of blown film die head to before reaching the cooling wind ring to the molten plastic material, can blow out the breeze of little cold by auxiliary cooling bellows, carry out the primary cooling to the plastic material, the refrigerated degree uses the molten plastic material to lower the temperature slightly but not reach the condensation yet and regard as the standard, can improve the cooling rate of bubble from this, or alleviate the cooling task of subsequent cooling wind ring, the wind speed of avoiding the cooling wind ring to blow out is too big and causes the bubble unstability, improve the blown film quality or blow film production efficiency.
Drawings
FIG. 1 is a schematic view of the structure and working principle of a film blowing machine.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
FIG. 3 is a partial schematic view of two auxiliary cooling windboxes of FIG. 2.
FIG. 4 is a schematic perspective view of two auxiliary cooling windboxes of FIG. 3.
FIG. 5 is a schematic view of the internal structure of two auxiliary cooling windboxes in FIG. 4.
FIG. 6 is a schematic view of a horizontal sectional structure of one of the auxiliary cooling windboxes.
FIG. 7 is a schematic view of a horizontal sectional structure in a state of use of two auxiliary cooling windboxes combined.
FIG. 8 is a schematic top view of a structure of two auxiliary cooling windboxes in a state of use after they are combined.
FIG. 9 is a schematic view showing the state of change in the opening of two auxiliary cooling windboxes around a hinge before bubbling.
Detailed Description
Fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6 show an auxiliary cooling mechanism for a film blowing apparatus, which includes a frame, wherein a film blowing die head 1 is mounted on the frame, the film blowing die head 1 is provided with a circular extrusion opening, a cooling air ring 2 is disposed above the film blowing die head 1, and the cooling air ring 2 is provided with an annular air outlet; two auxiliary cooling air boxes 3 are further arranged between the cooling air ring 2 and the film blowing die head 1, the two auxiliary cooling air boxes 3 can be horizontally and movably mounted on the rack and can be connected together in a relative rotating mode through hinges 7, and rotating shafts of the hinges 7 are vertical.
As shown in fig. 3, 4, 5 and 6, the opposite surfaces of the two auxiliary cooling wind boxes 3 are respectively recessed inward to form an air outlet wall 31 with a semicircular horizontal cross section, and the air outlet wall 31 is provided with a plurality of air outlet micro holes 32; after the two auxiliary cooling air boxes 3 are combined together face to face, the two auxiliary cooling air boxes 3 are arranged in a bilateral symmetry manner, and the semicircular air outlet walls 31 of the two auxiliary cooling air boxes 3 are combined to form a cylinder shape; a cooling fan 33 and a serpentine water pipe 34 are arranged in each auxiliary cooling air box 3, the front surface of the cooling fan 33 faces the semicircular air outlet wall 31, and the serpentine water pipe 34 is positioned at the back of the cooling fan 33; one box wall of each auxiliary cooling air box 3, which is positioned at the back of the cooling fan, is an air inlet wall 35, and the air inlet wall 35 is provided with an air inlet 36; a water inlet 51 and a water outlet 52 of the serpentine water pipe 34 are respectively arranged on the wall of the cooling air box 3; the water inlet 51 of the serpentine water pipe is connected with a water inlet hose 61, and the water outlet 52 of the serpentine water pipe is connected with a water outlet hose 62.
The working process and principle of the above embodiment are as follows:
before foaming, the two auxiliary cooling windboxes 3 may be opened as much as possible around the joint sheet so as to be away from the central axis of the film blowing die 1, respectively, as shown in fig. 9, so as not to interfere with the foaming operation of the worker; after the bubble foaming is finished, the two auxiliary cooling windboxes 3 can be folded and started, and the semicircular air outlet walls 31 of the two auxiliary cooling windboxes 3 are combined to form a cylinder shape, as shown in fig. 7, 8 and 4; after the auxiliary cooling air box 3 is started, external cold water flows into the water inlet 51 through the water inlet hose 61 and flows into the serpentine water pipe 34 and slides away through the water outlet 52 and the water outlet hose 62, external air enters the inner cavity of the auxiliary cooling air box 3 through the air inlet 36 and flows through the outside of the serpentine water pipe 34, the temperature of the air is reduced, the air is blown out through the air outlet micropores 32 of the air outlet wall 31 by the cooling fan 33 and is uniformly blown to the bubble 8 at a lower speed, the bubble 8 is subjected to auxiliary cooling before reaching the cooling air ring, and the degree of the auxiliary cooling is based on that the bubble is slightly cooled but is not condensed yet.
Claims (2)
1. The utility model provides a blown film equipment auxiliary cooling mechanism, includes the frame, installs the blown film die head in the frame, and the blown film die head is equipped with the annular extrusion mouth of circle, and the top of being close to the blown film die head is equipped with the cooling wind ring, and the cooling wind ring is equipped with annular air outlet, its characterized in that: two auxiliary cooling air boxes are arranged between the cooling air ring and the film blowing die head and can be horizontally and movably arranged on the rack; the opposite surfaces of the two auxiliary cooling air boxes are respectively inwards recessed to form an air outlet wall with a semicircular horizontal section, and the air outlet wall is provided with a plurality of air outlet micropores; after the two auxiliary cooling air boxes are combined together face to face, the two auxiliary cooling air boxes are symmetrically arranged left and right, and semicircular air outlet walls of the two auxiliary cooling air boxes are combined to form a cylinder shape; a cooling fan and a serpentine water pipe are arranged in each auxiliary cooling air box, the front surface of each cooling fan faces to the semicircular air outlet wall, and the serpentine water pipe is positioned at the back of the cooling fan; one box wall of each auxiliary cooling air box, which is positioned at the back of the cooling fan, is an air inlet wall, and the air inlet wall is provided with an air inlet; a water inlet and a water outlet of the snakelike water pipe are respectively arranged on the wall of the cooling air box; the water inlet of the snakelike water pipe is connected with a water inlet hose, and the water outlet of the snakelike water pipe is connected with a water outlet hose.
2. The auxiliary cooling mechanism of the film blowing equipment according to claim 1, characterized in that: the two auxiliary cooling air boxes are connected together in a relatively rotatable manner by using hinges, and the rotating shafts of the hinges are vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920409520.6U CN209888138U (en) | 2019-03-28 | 2019-03-28 | Auxiliary cooling mechanism of film blowing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920409520.6U CN209888138U (en) | 2019-03-28 | 2019-03-28 | Auxiliary cooling mechanism of film blowing equipment |
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| Publication Number | Publication Date |
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| CN209888138U true CN209888138U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920409520.6U Active CN209888138U (en) | 2019-03-28 | 2019-03-28 | Auxiliary cooling mechanism of film blowing equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829139A (en) * | 2020-12-31 | 2021-05-25 | 上海邦临管道工程技术有限公司 | Openable cooling air ring device |
| CN113942220A (en) * | 2021-10-28 | 2022-01-18 | 福建连众智惠实业有限公司 | Membrane bubble heat exchange control device |
-
2019
- 2019-03-28 CN CN201920409520.6U patent/CN209888138U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829139A (en) * | 2020-12-31 | 2021-05-25 | 上海邦临管道工程技术有限公司 | Openable cooling air ring device |
| CN113942220A (en) * | 2021-10-28 | 2022-01-18 | 福建连众智惠实业有限公司 | Membrane bubble heat exchange control device |
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