Film blowing equipment cooling air ring capable of adjusting inner diameter
By introducing the adjustable round -shaped regulatory ring and the arc -shaped sheet combination in the cooling wind rings of the film blowing equipment, the problem that the inner diameter of the existing cooling wind rings cannot be adjusted, and the flexible response and cooling of the diameter of the foam foam are realized. Precision control of effect.
Patent Information
- Application Number
- CN202421216112.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The inner diameter of the cooling air ring of the existing film blowing equipment cannot be adjusted, which makes it difficult to accurately control the cooling effect when the diameter of the membrane bubble changes.
Design a cooling wind rings that include the ring -shaped main airway, the upper and lower layers of circular wind guide board and the regulatory component. By setting the rotating round -shaped regulating ring and curved chip in the regulatory component of the upper and lower air guide boards, the inner diameter of the curved chip combination is adjusted to adjust the inner diameter of the cooling rings.
When the diameter of the foam is achieved, the inner diameter of the cooling rings is regulated to maintain the precise control of the cooling effect to ensure that the membrane bubble cooling is even.
Smart Images
Figure CN222406768U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic film processing equipment, in particular to a cooling air ring of film blowing equipment capable of adjusting the inner diameter. Background Art
[0002] When the film blowing equipment is working, the molten plastic material is extruded from the gap of the circular die opening of the die head to form a circular film bubble. At the same time, pressurized gas is blown into the film bubble to make it expand. The greater the expansion, the thinner the film bubble becomes and the larger the diameter of the film bubble. On the other hand, the temperature of the film bubble is high during extrusion, so it is necessary to use a cooling air ring to cool it so that the film bubble can be finally shaped.
[0003] Figure 1 , Figure 2 As shown, the cooling air ring is provided with an annular main air duct 5, and the inner side of the annular main air duct 5 is provided with upper and lower layers of circular air guide plates (upper circular air guide plate 3 and lower circular air guide plate 4), and the vertical gap between the upper and lower layers of circular air guide plates forms an annular horizontal slit 6, and the outer side of the horizontal slit 6 is connected to the annular main air duct 5, and the slit 60 of the horizontal slit 6 is located at the innermost side of the horizontal slit 6, and the slit 60 faces the membrane bubble 8 located in the center of the cooling air ring. During operation, the membrane bubble 8 passes vertically through the center of the cooling air ring, and the cooling airflow enters the annular main air duct 5 from the air inlet pipe 50, and then flows into the horizontal slit 6, and blows toward the membrane bubble 8 through the circular slit 60 of the horizontal slit, as shown in FIG. Figure 2 As shown by the arrow, cooling of the film bubble 8 is achieved.
[0004] The diameters of the bubbles produced by different batches of film blowing equipment may vary greatly. Even during the production of the same batch, the bubble diameter may be adjusted and changed. However, the inner diameter of the existing cooling air ring cannot be adjusted, that is, the position of the seam of the horizontal slit cannot be changed. Therefore, when the bubble diameter changes, the radial distance between the seam of the horizontal slit and the bubble will change with the change of the bubble diameter, which is not conducive to accurately controlling the cooling effect. Utility Model Content
[0005] The utility model aims to overcome the above disadvantages and provide a cooling air ring for film blowing equipment capable of adjusting the inner diameter, which can adjust and change the inner diameter to meet the needs of changing the diameter of the film bubble.
[0006] The purpose can be achieved according to the following scheme: A cooling air ring of a film blowing equipment capable of adjusting the inner diameter comprises an annular main air duct, an upper and lower annular air guide plates are arranged on the inner side of the annular main air duct, the vertical gap between the upper and lower annular air guide plates forms an annular horizontal gap, the outer side of the horizontal gap is connected to the annular main air duct, and the characteristic is that a group of regulating components is arranged above the upper annular air guide plate, and a group of regulating components is also arranged below the lower annular air guide plate;
[0007] Each group of regulating components includes a rotatable annular regulating ring and a plurality of long arc-shaped pieces; in each group of regulating components, the vertical position of the arc-shaped piece is located between the corresponding annular air guide plate and the annular regulating ring, and the arc-shaped pieces are centrally symmetrically distributed about the central axis of the annular regulating ring, and each adjacent two arc-shaped pieces are partially overlapped to form an overlap, and all the arc-shaped pieces are overlapped to form a ring-shaped arc-shaped piece assembly; a first convex pin and a second convex pin are respectively provided at both ends of each arc-shaped piece, the first convex pin protrudes toward the side where the annular regulating ring is located, and the second convex pin protrudes toward the side where the corresponding annular air guide plate is located. The circular adjustment ring is evenly arranged with a plurality of circular pin holes along the circumference, the number of the circular pin holes is the same as the number of the arc-shaped sheets, and the first convex pin of each arc-shaped sheet is inserted into a corresponding circular pin hole of the circular adjustment ring; the circular air guide plate is evenly arranged with a plurality of long strip holes along the circumference, one end of each long strip hole is close to the inner side of the circular air guide plate and the other end is close to the outer side of the circular air guide plate, the number of the long strip holes of the circular air guide plate is the same as the number of the arc-shaped sheets, and the second convex pin of each arc-shaped sheet is correspondingly inserted into a long strip hole of the circular air guide plate; an adjustment ring driving mechanism for driving the circular adjustment ring to rotate is also provided.
[0008] Preferably, the length direction of each long hole is the radial direction of the annular air guide plate.
[0009] More preferably, the annular adjustment ring is fixedly connected with an arc-shaped rack, and the arc-shaped rack is meshed with a gear; the arc-shaped rack and the gear form the adjustment ring driving mechanism.
[0010] The upper group of regulating components is also provided with an annular upper cover, and the lower group of regulating components is also provided with an annular lower cover; the upper group of regulating components is hidden between the upper cover and the upper circular air guide plate, and the lower group of regulating components is hidden between the lower cover and the lower circular air guide plate.
[0011] In this application document, "inner side" refers to the side close to the central axis of the cooling air ring (equivalent to the central axis of the membrane bubble), and "outer side" refers to the side away from the central axis of the cooling air ring.
[0012] The utility model has the following advantages and effects:
[0013] All the arc-shaped sheets of each group of regulating components are overlapped to form an annular arc-shaped sheet assembly, which has two layers, the upper annular arc-shaped sheet assembly is substantially formed as an extended component of the upper circular ring-shaped air guide plate, the lower annular arc-shaped sheet assembly is substantially formed as an extended component of the lower circular ring-shaped air guide plate, and the vertical gap between the upper and lower layers of annular arc-shaped sheet assemblies is substantially formed as a horizontal gap extension extending inward from the horizontal gap. During operation, the cooling airflow flows from the annular main air duct to the horizontal gap, then flows to the vertical gap between the upper and lower layers of annular arc-shaped sheet assemblies, and blows toward the membrane bubble from the seam of the vertical gap between the upper and lower layers of the arc-shaped sheet assemblies. On the other hand, when the annular adjustment ring rotates, the annular adjustment ring drives the second protruding pin of each arc-shaped piece to slide in the long hole of the annular air guide plate, and one end of each long hole is close to the inner side of the annular air guide plate and the other end is close to the outer side of the annular air guide plate, which means that the horizontal distance between each arc-shaped piece and the center point of the cooling air ring changes. Therefore, rotating the annular adjustment ring can change the inner diameter of the annular arc-shaped piece assembly, that is, adjust and change the horizontal radial distance between the seam of the vertical gap between the upper and lower layers of the arc-shaped piece assembly and the center point of the membrane bubble, which is equivalent to adjusting and changing the inner diameter of the cooling air ring, so that after the diameter of the membrane bubble changes, the radial distance between the air outlet of the cooling air ring and the membrane bubble can still be maintained within an appropriate range, which is conducive to precise control of the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the conventional structure of the cooling air ring.
[0015] Figure 2 It is a cross-sectional schematic diagram of the working process of the cooling air ring.
[0016] Figure 3 It is a three-dimensional structural schematic diagram of an embodiment of the utility model.
[0017] Figure 4 yes Figure 3 A schematic cross-sectional view of the illustrated embodiment.
[0018] Figure 5 yes Figure 4 A is a partial enlarged schematic diagram.
[0019] Figure 6 It is a schematic diagram of the three-dimensional decomposition structure of a set of control components above and the upper circular air guide plate.
[0020] Figure 7 This is a schematic diagram of the three-dimensional structure of one of the arc-shaped pieces.
[0021] Figure 8 yes Figure 6 A schematic three-dimensional cross-sectional view of the structure after assembly.
[0022] Fig. 9 It is a schematic diagram of an arc-shaped piece assembly formed by combining all the arc-shaped pieces.
[0023] Fig.10 It is a circumferentially unfolded schematic diagram showing the circumferential overlap of the arc-shaped sheets.
[0024] Fig.11 It is a schematic diagram when the second protruding pin of one of the arc-shaped sheets moves to the inner side of the elongated hole.
[0025] Fig.12 It is a schematic diagram when the second protruding pins of all arc-shaped pieces move to the inner side of the long hole.
[0026] Fig.13 It is a schematic diagram when the second protruding pin of one of the arc-shaped sheets moves to the outside of the elongated hole.
[0027] Fig.14 It is a schematic diagram when the second protruding pins of all arc-shaped pieces move to the outside of the long strip holes. DETAILED DESCRIPTION
[0028] Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a cooling air ring of a film blowing device capable of adjusting the inner diameter of the embodiment comprises an annular main air duct 5, an upper annular air guide plate 3 and a lower annular air guide plate 4 are arranged on the inner side of the annular main air duct 5, a vertical gap between the upper and lower annular air guide plates forms an annular horizontal slit 6, the outer side of the horizontal slit 6 is connected to the annular main air duct 5, a group of regulating components is arranged above the upper annular air guide plate 3, and a group of regulating components is also arranged below the lower annular air guide plate 4; the structures of the upper and lower groups of regulating components are formed to be symmetrical from top to bottom;
[0029] Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, each group of regulating components includes a rotatable annular regulating ring 2 and twelve long arc-shaped pieces 1; in each group of regulating components, the vertical position of the arc-shaped piece 1 is located between the corresponding annular air guide plate and the annular regulating ring 2, and each arc-shaped piece 1 is centrally symmetrically distributed about the central axis of the annular regulating ring 2, and each adjacent two arc-shaped pieces 1 are partially overlapped to form an overlap, and the circumferentially expanded structure of the overlap form is as shown in FIG. Fig.10 As shown, all the arc-shaped sheets 1 are overlapped to form an annular arc-shaped sheet assembly 10, as shown in FIG. Fig. 9 , Fig.12 , Fig.14 As shown; Figure 7 , Figure 6As shown, a first convex pin 11 and a second convex pin 12 are respectively provided at both ends of each arc-shaped sheet 1, the first convex pin 11 protrudes toward the side where the circular ring adjustment ring 2 is located, and the second convex pin 12 protrudes toward the side where the corresponding circular ring air guide plate is located, and the circular ring adjustment ring 2 is evenly arranged with a plurality of circular pin holes 20 along the circumferential direction, and the number of the circular pin holes 20 is 12, which is the same as the number of the arc-shaped sheets 1, and the first convex pin 11 of each arc-shaped sheet 1 is inserted into a corresponding circular pin hole 20 of the circular ring adjustment ring 2; the circular ring air guide plates (upper circular ring air guide plate 3 / lower circular ring air guide plate 4) are evenly arranged with twelve circular pin holes 20 along the circumferential direction. The long hole 30, each long hole 30 is in the radial direction of the corresponding circular air guide plate, so one end of each long hole 30 is close to the inner side of the corresponding circular air guide plate (upper circular air guide plate 3 / lower circular air guide plate 4) and the other end is close to the outer side of the corresponding circular air guide plate; the second convex pin 12 of each arc-shaped sheet 1 is correspondingly inserted into a long hole 30 of the circular air guide plate; there is also an adjustment ring driving mechanism for driving the circular adjustment ring 2 to rotate, specifically, the circular adjustment ring 2 is fixedly connected with an arc rack 71, the arc rack 71 is meshed with a gear 72, and the gear 72 is driven by a motor. In addition, the upper group of control components is also provided with an annular upper cover 91, and the lower group of control components is also provided with an annular lower cover 92; the upper group of control components is hidden between the upper cover 91 and the upper circular air guide plate 3, and the lower group of control components is hidden between the lower cover 92 and the lower circular air guide plate 4.
[0030] The working principle of the above embodiment is as follows:
[0031] During operation, the cooling airflow flows from the annular main air duct 5 to the horizontal slit 6, and then flows into the vertical gap between the upper and lower layers of the annular arc-shaped sheet assembly 10, and blows toward the film bubble from the slit of the vertical gap between the upper and lower layers of the arc-shaped sheet assembly 10; when the diameter of the film bubble becomes smaller, the motor can drive the gear 72 to rotate, and the gear 72 drives the arc-shaped rack 71 to move so that the annular adjustment ring 2 rotates, and the annular adjustment ring 2 pushes each arc-shaped sheet 1 to move, so that the second convex pin 12 of each arc-shaped sheet 1 moves synchronously inward in the long strip hole 30, so that the inner diameter of the annular arc-shaped sheet assembly 10 becomes smaller, so that the horizontal distance between the arc-shaped sheet assembly 10 and the film bubble is maintained in an appropriate range, and the state after adjustment is as follows Fig.11 , Fig.12 On the contrary, when the diameter of the bubble becomes larger, the annular adjustment ring 2 can be driven to rotate, so that the second protruding pin 12 of each arc-shaped sheet 1 moves outward in the long hole 30, so that the inner diameter of the arc-shaped sheet assembly 10 becomes larger, and the state after adjustment is as shown Fig.13 , Fig.14 shown.
Claims
1. A cooling air ring for film blowing equipment with adjustable inner diameter, comprising an annular main air duct, wherein two layers of annular air guide plates are arranged on the inner side of the annular main air duct, wherein the vertical gap between the two layers of annular air guide plates forms an annular horizontal gap, and the outer side of the horizontal gap is connected to the annular main air duct, wherein: A group of regulating components is provided above the upper circular air guide plate, and a group of regulating components is also provided below the lower circular air guide plate; each group of regulating components includes a rotatable circular adjustment ring and a plurality of long arc-shaped pieces; in each group of regulating components, the vertical position of the arc-shaped piece is located between the corresponding circular air guide plate and the circular adjustment ring, and each arc-shaped piece is centrally symmetrically distributed about the central axis of the circular adjustment ring, and each adjacent two arc-shaped pieces are partially overlapped to form an overlap, and all the arc-shaped pieces are overlapped to form a ring-shaped arc-shaped piece assembly; a first convex pin and a second convex pin are respectively provided at both ends of each arc-shaped piece, and the first convex pin protrudes toward the side where the circular adjustment ring is located, The second convex pin protrudes toward the side where the corresponding annular air guide plate is located, and the annular adjustment ring is evenly arranged with a plurality of circular pin holes along the circumference, the number of the circular pin holes is the same as the number of the arc-shaped sheets, and the first convex pin of each arc-shaped sheet is inserted into a corresponding circular pin hole of the annular adjustment ring; the annular air guide plate is evenly arranged with a plurality of long strip holes along the circumference, one end of each long strip hole is close to the inner side of the annular air guide plate and the other end is close to the outer side of the annular air guide plate, the number of the long strip holes of the annular air guide plate is the same as the number of the arc-shaped sheets, and the second convex pin of each arc-shaped sheet is correspondingly inserted into a long strip hole of the annular air guide plate; an adjustment ring driving mechanism for driving the annular adjustment ring to rotate is also provided.
2. The cooling air ring of the film blowing equipment with adjustable inner diameter according to claim 1, characterized in that: The long direction of each long hole is the radial direction of the circular air guide plate.
3. The cooling air ring of the film blowing equipment with adjustable inner diameter according to claim 1 or 2, characterized in that: The annular adjusting ring is fixedly connected with an arc-shaped rack, and the arc-shaped rack is meshed with a gear; the arc-shaped rack and the gear form the adjusting ring driving mechanism.
4. The cooling air ring of the film blowing equipment with adjustable inner diameter according to claim 1 or 2, characterized in that: The upper group of regulating components is also provided with an annular upper cover, and the lower group of regulating components is also provided with an annular lower cover; the upper group of regulating components is hidden between the upper cover and the upper circular air guide plate, and the lower group of regulating components is hidden between the lower cover and the lower circular air guide plate.