Adjustable cooling air ring structure

Abstract

The utility model relates to the technical field of plastic product processing, and discloses an adjustable cooling air ring structure which comprises an air ring body, and a plurality of air inlet pipes used for supplying air are fixedly installed on the outer wall of the air ring body. The air guide structure comprises air guide plates and an electric push rod, the multiple air guide plates are rotationally arranged in the air exhaust groove, the electric push rod is fixedly arranged above the air ring body, the electric push rod can push the air guide plates to keep synchronous swinging, and the air pressure and the air direction are adjusted through an annular shutter formed by the multiple air guide plates; a gap is formed between every two adjacent air guide plates and used for exhausting air, the size of the gap between every two adjacent air guide plates can also be adjusted along with swinging of the air guide plates, the air speed can be adjusted within a certain range, planned adjustment can be achieved according to the types of products in the production and machining process, it can be guaranteed that various types of products can be cooled and shaped, adjustability is high, and production efficiency is high. The application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of plastic product processing technology, and in particular to an adjustable cooling air ring structure. Background Technology

[0002] The air ring is an important component of blown film units in plastic processing machinery, mainly used to cool and shape the inflated film bubble.

[0003] A search revealed a prior art cooling air ring (publication number: CN204773552U), comprising an air ring body, an air inlet pipe disposed on the outer wall of the air ring body, and an air outlet disposed on the inner wall of the air ring body. The air inlet pipe is provided with an air inlet for introducing air into the air ring body. The air ring body is provided with a wind-reducing ring inside, and the wind-reducing ring has alternating large hole areas and small hole areas, with the small hole areas disposed below the air inlet.

[0004] In existing technologies, air is mainly introduced into the exhaust vent through the air inlet to cool the products. Since the exhaust vent size is fixed, the direction and pressure of the exhaust are fixed and difficult to adjust. For actual production in factories, there may be a need for multiple uses of one machine according to the production plan. In this case, the unadjustable air pressure will limit the adaptability to the production of different types of products and make it difficult to make targeted adjustments according to the needs.

[0005] Therefore, we propose an adjustable cooling air ring structure. Utility Model Content

[0006] The present invention mainly solves the technical problem of the above-mentioned fixed wind pressure being difficult to adjust, and provides an adjustable cooling air ring structure.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: an adjustable cooling air ring structure, comprising:

[0008] The air ring body has an exhaust groove on its inner wall for exhausting air, and several air inlet pipes for supplying air are fixedly installed on its outer wall.

[0009] An air guide structure is installed in the exhaust duct to adjust the air pressure and direction. The air guide structure includes air guide plates and electric actuators. Several air guide plates are rotatably arranged in the exhaust duct, and the multiple air guide plates together form a ring-shaped louver structure. The electric actuators are fixedly installed above the air ring body and can push the air guide plates to keep swinging synchronously.

[0010] In a preferred embodiment of this utility model, the air guide structure further includes a limiting shaft and a pulley. Each air guide plate is fixedly mounted with a limiting shaft, and the limiting shaft is fixedly mounted with a pulley. The multiple pulleys are driven by a belt.

[0011] In a preferred embodiment of this utility model, the air guide plate is formed into a plate with an S-shaped horizontal cross section, and the same limiting shaft is fixedly installed on both the upper and lower end faces of the air guide plate. The inner bottom surface of the air ring body is provided with a shaft hole adapted to the limiting shaft, and the limiting shaft is rotatably arranged in the shaft hole.

[0012] As a preferred embodiment of this utility model, a pressure cover is detachably provided on the upper part of the air ring body, and the pressure cover has the same shaft hole for limiting the upper limit shaft of the air guide plate.

[0013] In a preferred embodiment of this utility model, the pressure cap is annular, and the diameter of the pressure cap is equal to that of the air ring body. The pressure cap is locked to the air ring body by bolts and the upper end of the exhaust groove is sealed.

[0014] In a preferred embodiment of this utility model, the air guide structure further includes a connecting rod, the upper end of the limiting shaft is fixedly mounted with the connecting rod, the electric push rod is fixedly mounted on the top of the pressure cover, and the output shaft of the electric push rod is rotatably connected to the connecting rod.

[0015] In a preferred embodiment of this utility model, the air inlet pipe includes a flat pipe with an arc-shaped horizontal cross-section, and a round pipe for connection is fixedly installed at the end of the flat pipe. The flat pipe extends through the air ring body and into the exhaust duct.

[0016] This invention provides an adjustable cooling air ring structure. It has the following beneficial effects:

[0017] 1. This adjustable cooling air ring structure uses multiple air guide plates to form an annular louver, which allows for the adjustment of air pressure and direction. When the air guide plates swing, a gap is formed between two adjacent air guide plates for air exhaust. The size of the gap between the two air guide plates can also be adjusted as the air guide plates swing, allowing for the adjustment of air speed within a certain range. It can be adjusted according to the planned types of products during the production process, ensuring that the cooling and shaping of various types of products can be met. It has strong adjustability and a wide range of applications.

[0018] 2. This adjustable cooling air ring structure cools and molds plastic products by blowing air with a flow rate into the air inlet pipe and exhaust slot. The plastic products can be plastic films. The arc-shaped air inlet pipe allows the air to enter the exhaust slot at a certain angle, which can promote the formation of air vortex, ensure the uniformity of air blowing, and avoid the blow-molded products from being subjected to excessive force and breaking due to radial air blowing perpendicular to the air ring body. Attached Figure Description

[0019] Figure 1 This is a perspective view of the entire utility model;

[0020] Figure 2 This is a partial cross-sectional view of the air ring body and the pressure cap of this utility model;

[0021] Figure 3 This is one of the three-dimensional views of the air guide structure of this utility model;

[0022] Figure 4 This is the second perspective view of the air guide structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the installation of the air guide plate and electric actuator of this utility model.

[0024] Legend: 10. Air ring body; 11. Air inlet pipe; 12. Air outlet duct; 13. Pressure cap; 20. Air guide plate; 21. Electric actuator; 22. Limiting shaft; 23. Pulley; 24. Connecting rod. Detailed Implementation

[0025] An adjustable cooling air ring structure, such as Figure 1 and Figure 2 As shown, it includes:

[0026] The air ring body 10 has an exhaust groove 12 for exhausting air on its inner wall. Several air inlet pipes 11 for supplying air are fixedly installed on the outer wall of the air ring body 10. Each air inlet pipe 11 includes a flat pipe with an arc-shaped horizontal cross section. A round pipe for connection is fixedly installed at the end of the flat pipe. The flat pipe extends through the air ring body 10 and into the exhaust groove 12.

[0027] Specifically, at least three air inlet pipes 11 are welded to the outer circumferential surface of the air ring body 10. Each air inlet pipe 11 is connected to an air source, taking a centrifugal fan as an example. The circular pipe of the air inlet pipe 11 is connected to the air outlet of the centrifugal fan through a flexible hose. Air with a flow rate is blown into the exhaust trough 12 through the air inlet pipe 11 to achieve cooling and molding of plastic products. The plastic products can be plastic films. The arc-shaped air inlet pipe 11 allows the air to enter the exhaust trough 12 at a certain angle, which can promote the formation of air vortex, ensure the uniformity of air blowing, and avoid the blown products being subjected to excessive force and breaking due to the air blowing radially perpendicular to the air ring body 10.

[0028] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the air guiding structure, set within the exhaust duct 12, is used to adjust air pressure and direction. The air guiding structure includes air guide plates 20 and electric actuators 21. Several air guide plates 20 are rotatably arranged within the exhaust duct 12, forming a ring-shaped louver structure. The electric actuators 21 are fixedly mounted above the air ring body 10, and can push the air guide plates 20 to maintain synchronous oscillation. The air guiding structure also includes a limiting shaft 22 and pulleys 23. Each air guide plate 20 is fixedly mounted with a limiting shaft 22, and the limiting shaft 22 is fixedly mounted with a pulley 23. Multiple pulleys 23 are connected by belt drive. The air guide plates 20 form a plate with a horizontal cross-section in the shape of an S. The upper and lower ends of the air guide plates 20 are both fixed... The same limiting shaft 22 is fixedly installed. The inner bottom surface of the air ring body 10 is provided with a shaft hole adapted to the limiting shaft 22. The limiting shaft 22 is rotatably installed in the shaft hole. A pressure cover 13 is detachably installed on the top of the air ring body 10. The pressure cover 13 is provided with the same shaft hole for limiting the upper end of the limiting shaft 22 of the air guide plate 20. The pressure cover 13 is annular and has the same diameter as the air ring body 10. The pressure cover 13 is locked to the air ring body 10 by bolts and closes the upper end of the exhaust groove 12. The air guide structure also includes a connecting rod 24. The upper end of one of the limiting shafts 22 is fixedly installed with the connecting rod 24. The electric push rod 21 is fixedly installed on the top of the pressure cover 13. The output shaft of the electric push rod 21 is rotatably connected to the connecting rod 24.

[0029] In this scheme, the electric actuator 21 needs to be electrically connected to the encoded PLC controller. The output shaft of the electric actuator 21 pushes the connecting rod 24, causing the limiting shaft 22 at the top of one of the air guide plates 20 to rotate. The limiting shaft 22 drives the air guide plate 20 to rotate a certain angle, which in turn drives the pulley 23 to maintain synchronous circular motion. The pulley 23 then drives the belt, causing all the pulleys 23 to move synchronously, thus achieving synchronous adjustment of multiple air guide plates 20. The belt is a toothed belt, and the pulleys 23 are matched with it. Of course, the belt and pulleys 23 must also meet the required wrap angle for transmission. The rotation angle of the air guide plate 20 is adjustable from 0 to 30 degrees. The air volume needs to be adjusted according to the diameter of the air ring 10. In the initial position, the edges of multiple air guide plates 20 overlap and stagger to form a closed ring. The air guide plates 20 are at the same height as the exhaust duct 12. The air pressure and air direction are adjusted by forming an annular louver through multiple air guide plates 20. When the air guide plates 20 swing, a gap is formed between two adjacent air guide plates 20 for air exhaust. The size of the gap between two air guide plates 20 can also be adjusted with the swing of the air guide plates 20, and the radial component is increased. The air speed can be adjusted within a certain range. It can be planned and adjusted according to the types of products in the production and processing process, and can ensure that the cooling and shaping of various types of products are met. It has strong adjustability and wide applicability.

[0030] The working principle of this utility model is as follows: At least three air inlet pipes 11 are welded to the outer circumference of the air ring body 10. Each air inlet pipe 11 is connected to an air source, taking a centrifugal fan as an example. The circular pipe of the air inlet pipe 11 is connected to the air outlet of the centrifugal fan through a flexible hose. Air with a flow rate is blown into the exhaust duct 12 through the air inlet pipe 11 to achieve cooling and molding of the plastic product. The electric actuator 21 needs to be electrically connected to the coded PLC controller. The output shaft of the electric actuator 21 pushes the connecting rod 24 to make the limiting shaft 22 at the top of one of the air guide plates 20 rotate. The limiting shaft 22 drives the air guide plate 20 to rotate around the other limiting shaft 22 at the bottom by a certain angle. The limiting shaft 22 drives the pulley 23. Maintaining synchronous circular motion, the pulley 23 drives the belt, causing each pulley 23 to move synchronously, thereby achieving synchronous adjustment of multiple air guide plates 20. The belt is a toothed belt, and the pulley 23 is matched with the belt. Of course, the belt and pulley 23 should also meet the required wrap angle for transmission. The rotation angle of the air guide plate 20 is adjustable from 0 to 30 degrees. Through the annular louver formed by multiple air guide plates 20, the air pressure and air direction are adjusted. When the air guide plate 20 swings, a gap is formed between two adjacent air guide plates 20 for air discharge. It should be noted that a sealing ring is provided in the shaft hole used for installation limit to ensure the sealing between each limit shaft 22 and the cover 13.

[0031] The electric actuator 21 is a DC electric actuator with built-in potentiometer feedback, operating at DC 24V. The PLC controller is selected from models with an analog output (AO) module (such as Siemens S7-1200). The PLC's AO module outputs a 0-10V DC signal to the controller built into the electric actuator 21. This signal linearly corresponds to the actuator's stroke position (0V corresponds to 0mm stroke / 0 degrees, 10V corresponds to 40mm stroke / 30 degrees). The built-in potentiometer of the electric actuator 21 feeds back its actual position signal (0-10V) to the PLC's analog input (AI) module, forming a closed-loop control. The operator can set the target air guide angle (0-30 degrees) on the PLC's human-machine interface (HMI). The PLC controls the AO output through a PID algorithm, driving the electric actuator 21 to move to the target position and maintain it.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable cooling air ring structure, characterized in that, include: The air ring body (10) has an exhaust groove (12) on its inner wall for exhausting air, and a number of air inlet pipes (11) for supplying air are fixedly installed on the outer wall of the air ring body (10). The air guide structure is set in the exhaust duct (12) to adjust the air pressure and air direction. The air guide structure includes an air guide plate (20) and an electric push rod (21). Several air guide plates (20) are rotatably set in the exhaust duct (12). The multiple air guide plates (20) together form a ring-shaped louver structure. The electric push rod (21) is fixedly set above the air ring body (10). The electric push rod (21) can push the air guide plate (20) to keep swinging synchronously.

2. The adjustable cooling air ring structure according to claim 1, characterized in that: The air guide structure also includes a limiting shaft (22) and a pulley (23). Each air guide plate (20) is fixedly installed with a limiting shaft (22), and the limiting shaft (22) is fixedly installed with a pulley (23). Multiple pulleys (23) are driven by belts.

3. The adjustable cooling air ring structure according to claim 2, characterized in that: The air guide plate (20) forms a plate with an S-shaped horizontal cross section. The same limiting shaft (22) is fixedly installed on the upper and lower end faces of the air guide plate (20). The inner bottom surface of the air ring body (10) is provided with a shaft hole adapted to the limiting shaft (22). The limiting shaft (22) is rotatably set in the shaft hole.

4. The adjustable cooling air ring structure according to claim 3, characterized in that: A pressure cap (13) is detachably provided on the upper part of the air ring body (10), and the pressure cap (13) has the same shaft hole for limiting the upper end limiting shaft (22) of the air guide plate (20).

5. The adjustable cooling air ring structure according to claim 4, characterized in that: The pressure cap (13) is annular and has the same diameter as the air ring body (10). The pressure cap (13) is locked to the air ring body (10) by bolts and closes the upper end of the exhaust groove (12).

6. The adjustable cooling air ring structure according to claim 4, characterized in that: The air guide structure also includes a connecting rod (24), the upper end of the limiting shaft (22) is fixedly installed with the connecting rod (24), the electric push rod (21) is fixedly installed on the top of the pressure cover (13), and the output shaft of the electric push rod (21) is rotatably connected to the connecting rod (24).

7. The adjustable cooling air ring structure according to claim 1, characterized in that: The air inlet pipe (11) includes a flat pipe with an arc-shaped horizontal cross section. A round pipe for connection is fixedly installed at the end of the flat pipe. The flat pipe extends through the air ring body (10) and into the exhaust duct (12).

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