Film blowing mechanism and film blowing machine

Abstract

The utility model discloses a film blowing mechanism and a film blowing machine, and relates to the field of film blowing machines, the film blowing mechanism comprises a film blowing disc mold, the bottom of the film blowing disc mold is provided with an air supply pipe, a connecting pipe is fixedly connected to the bottom of the film blowing disc mold, a connector is connected to the end part of the air supply pipe, the connector is sleeved outside the connecting pipe in a sliding manner, and a sealing gasket is sleeved inside the connector; the top of the sealing gasket is attached to the bottom of the connecting pipe in an extruding mode, the locking assembly is used for locking a connector outside the connecting pipe, and the limiting assembly is arranged between the locking assembly and the connector. According to the utility model, by utilizing a matched use mode of the film blowing disc mold, the air supply pipe and the connecting assembly, when the connecting head is sleeved outside the connecting pipe in a sliding manner, the locking assembly can clamp and lock the connecting head outside the connecting pipe under the action of the limiting assembly, and the limitation of the locking assembly on the connecting head is relieved; therefore, the convenience of mounting and dismounting the air supply pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of blown film machines, and in particular to a blown film mechanism and a blown film machine. Background Technology

[0002] A blown film machine is a type of mechanical equipment used for plastic processing. Its main function is to heat plastic particles to a molten state and then blow them into thin films through air blowing and traction mechanisms. These films can be used for various packaging materials. The working principle of a blown film machine involves steps such as melting plastic, air blowing expansion, cooling, and molding.

[0003] A blown film machine typically consists of an extruder, a die, a cooling device, a traction device, and a winding device. The extruder heats and melts the plastic particles, which are then discharged from the die. The cooling device cools and shapes the material discharged from the die.

[0004] Existing cooling mechanisms typically consist of an air ring and an air supply pipe. The air supply pipe is installed on the die head, and the airflow delivered by the air supply pipe is discharged from the air ring to cool the film. However, the air supply pipe is usually fixed to the connecting pipe at the bottom of the die head by fasteners and bolts. This requires not only tools to tighten the bolts during installation, but also the required tightening force between the air supply pipe and the connecting pipe. Adjusting the force exerted by the bolts on the fasteners reduces the efficiency of installing or removing the air supply pipe. Utility Model Content

[0005] The purpose of this invention is to provide a blown film mechanism and a blown film machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a blown film mechanism, comprising a blown film mold, wherein an air supply pipe is provided at the bottom of the blown film mold;

[0007] A connecting assembly is provided between the air supply pipe and the blown film mold, the connecting assembly including:

[0008] A connecting pipe, which is fixedly connected to the bottom of the blown film mold;

[0009] A connector is attached to the end of an air supply pipe. The connector is slidably fitted onto the outside of the connecting pipe. A sealing gasket is fitted inside the connector, and the top of the sealing gasket is pressed against the bottom of the connecting pipe.

[0010] A locking component is disposed on the outside of the connector, and the locking component is used to lock the connector outside the connecting pipe;

[0011] A limiting component is disposed between the locking component and the connector.

[0012] Preferably, the locking component includes:

[0013] An arc plate is disposed outside the connector, and the arc plate is linked with the limiting component;

[0014] A locking plate, which is snapped between the connector and the connecting pipe.

[0015] Preferably, the locking plate is fixedly connected to the side of the arc plate facing the connector, the outer wall of the locking plate is slidably inserted into the connector, the outer wall of the connecting pipe is provided with a locking groove, and one end of the outer wall of the locking plate is slidably engaged with the inner cavity of the locking groove.

[0016] Preferably, a slider is fixedly connected to the outer wall of the connecting pipe, and a groove is formed on the inner wall of the connector, with the outer wall of the slider slidingly engaging with the inner cavity of the groove.

[0017] Preferably, the limiting component includes:

[0018] The first fixing plate is fixedly connected to the side of the connector;

[0019] The second fixing plate is fixedly connected to the side of the arc plate;

[0020] A limiting spring is provided on the side of the second fixing plate opposite to the first fixing plate;

[0021] A positioning rod, one end of which is fixedly connected to a first fixing plate, and a positioning groove is provided on the side of the second fixing plate facing the first fixing plate. The outer wall of the positioning rod is slidably engaged with the inner cavity of the positioning groove.

[0022] Preferably, the limiting component further includes:

[0023] The guide rod has its outer wall slidably inserted into the second fixed plate and its outer wall slidably inserted into the limiting spring. One end of the first fixed plate has a slot that matches the guide rod.

[0024] A limiting block is fixedly connected to one end of a guide rod, and a limiting spring is located between the limiting block and the second fixed plate.

[0025] Another objective of this utility model is to provide a blown film machine, which includes the above-mentioned blown film mechanism.

[0026] The technical effects and advantages of this utility model are as follows:

[0027] This utility model utilizes the combined use of a blown film die, an air delivery pipe, and a connecting component. The connecting component includes a connecting pipe, a connector, a locking component, and a limiting component. When the connector is slidably sleeved on the outside of the connecting pipe, the locking component, under the action of the limiting component, can lock the connector on the outside of the connecting pipe. Furthermore, by releasing the locking component from restricting the connector, the air delivery pipe can be directly disassembled, thereby improving the convenience of installing and disassembling the air delivery pipe. Attached Figure Description

[0028] Fig. 1 This is a schematic diagram of the overall structure of this utility model.

[0029] Fig. 2 This is a schematic diagram of the overall structure of the connector of this utility model.

[0030] Fig. 3 This is a top-view schematic diagram of the internal structure of the connector part of this utility model.

[0031] In the diagram: 1. Blown film mold; 2. Air supply pipe; 3. Connecting assembly; 31. Connecting pipe; 32. Connector; 33. Locking assembly; 331. Arc plate; 332. Locking plate; 333. Slider; 34. Limiting assembly; 341. First fixing plate; 342. Second fixing plate; 343. Limiting spring; 344. Guide rod; 345. Slot; 346. Limiting block; 347. Positioning rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] This utility model provides, for example Figs. 1-3The blown film mechanism shown includes a blown film mold 1. An air supply pipe 2 is located at the bottom of the blown film mold 1. A connecting assembly 3 is provided between the air supply pipe 2 and the blown film mold 1. The connecting assembly 3 includes a connecting pipe 31, a connector 32, a locking assembly 33, and a limiting assembly 34. The connecting pipe 31 is fixedly connected to the bottom of the blown film mold 1, and its inner cavity communicates with an air ring inside the blown film mold 1. Thus, the gas supplied by the air supply pipe 2 is delivered to the air ring through the connecting pipe 31, and the air ring discharges airflow, which can blow-form, cool, and shape the film discharged from the blown film mold 1. The connector 32 is connected to the end of the air supply pipe 2, and the connector 32 slides... The connector 32 is fitted onto the outside of the connecting pipe 31. A sealing gasket is fitted inside the connector 32. The top of the sealing gasket is pressed against the bottom of the connecting pipe 31. The sealing gasket can improve the sealing between the connector 32 and the connecting pipe 31. The locking component 33 is disposed on the outside of the connector 32. The locking component 33 is used to lock the connector 32 outside the connecting pipe 31. The limiting component 34 is disposed between the locking component 33 and the connector 32. Under the action of the limiting component 34, the locking component 33 can lock the connector 32 outside the connecting pipe 31, thereby ensuring the stability of the connector 32 installed on the outer wall of the connecting pipe 31.

[0034] In particular, the locking assembly 33 includes an arc plate 331 and a locking plate 332. The arc plate 331 is disposed outside the connector 32 and is linked with the limiting assembly 34. A handle is fixedly connected to the side of the arc plate 331 facing away from the connector 32. The locking plate 332 is snapped between the connector 32 and the connecting tube 31. The locking plate 332 is fixedly connected to the side of the arc plate 331 facing the connector 32. The outer wall of the locking plate 332 is slidably inserted into the connector 32. A locking groove is provided on the outer wall of the connecting tube 31. One end of the outer wall of the locking plate 332 is slidably engaged with the inner cavity of the locking groove. By using the handle to move the arc plate 331 away from the connector 32, the locking plate 332 is separated from the connecting pipe 31, and the connector 32 can be directly slidably disassembled, thereby improving the convenience of installing and disassembling the air supply pipe 2. The outer wall of the connecting pipe 31 is fixedly connected with a slider 333, and the inner wall of the connector 32 is provided with a sliding groove. The outer wall of the slider 333 is slidably engaged with the inner cavity of the sliding groove. The slider 333 can improve the stability of the connection between the connector 32 and the connecting pipe 31.

[0035] Furthermore, the limiting assembly 34 includes a first fixing plate 341, a second fixing plate 342, a limiting spring 343, and a positioning rod 347. The first fixing plate 341 is fixedly connected to the side of the connector 32, the second fixing plate 342 is fixedly connected to the side of the arc plate 331, the limiting spring 343 is disposed on the side of the second fixing plate 342 opposite to the first fixing plate 341, one end of the positioning rod 347 is fixedly connected to the first fixing plate 341, and a positioning groove is formed on the side of the second fixing plate 342 facing the first fixing plate 341. The outer wall of the positioning rod 347 is slidably engaged with the inner cavity of the positioning groove, and the positioning rod 347 can raise the arc plate 331 to engage with the outside of the connector 32. To ensure stability, the limiting assembly 34 also includes a guide rod 344 and a limiting block 346. The outer wall of the guide rod 344 is slidably inserted and sleeved with the second fixing plate 342, and the outer wall of the guide rod 344 is slidably sleeved with the limiting spring 343. One end of the first fixing plate 341 is provided with a slot 345 that matches the guide rod 344. The limiting block 346 is fixedly connected to one end of the guide rod 344. The limiting spring 343 is located between the limiting block 346 and the second fixing plate 342. The limiting spring 343 can provide elastic force to the arc plate 331 toward the connector 32 through the second fixing plate 342, thereby ensuring the stability of the arc plate 331 driving the locking plate 332 to engage with the connecting tube 31.

[0036] This embodiment provides a blown film machine, which includes the blown film mechanism described above.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blown film mechanism, comprising a blown film mold (1), wherein an air supply pipe (2) is provided at the bottom of the blown film mold (1); Its features are, A connecting assembly (3) is provided between the air supply pipe (2) and the blown film mold (1), the connecting assembly (3) comprising: Connecting pipe (31), the connecting pipe (31) is fixedly connected to the bottom of the blown film mold (1); Connector (32), the connector (32) is connected to the end of the air supply pipe (2), the connector (32) is slidably sleeved on the outside of the connecting pipe (31), the inside of the connector (32) is fitted with a sealing gasket, the top of the sealing gasket is pressed against the bottom of the connecting pipe (31); A locking component (33) is disposed outside the connector (32) and is used to lock the connector (32) outside the connecting tube (31); A limiting component (34) is disposed between the locking component (33) and the connector (32).

2. The blown film mechanism according to claim 1, characterized in that, The locking component (33) includes: Arc plate (331), the arc plate (331) is disposed outside the connector (32), and the arc plate (331) is linked with the limiting component (34); Locking plate (332) is snapped between connector (32) and connecting pipe (31).

3. The blown film mechanism according to claim 2, characterized in that, The locking plate (332) is fixedly connected to the side of the arc plate (331) facing the connector (32). The outer wall of the locking plate (332) is slidably inserted into the connector (32). The outer wall of the connecting pipe (31) is provided with a locking groove. One end of the outer wall of the locking plate (332) is slidably engaged with the inner cavity of the locking groove.

4. The blown film mechanism according to claim 3, characterized in that, The outer wall of the connecting pipe (31) is fixedly connected to a slider (333), and the inner wall of the connector (32) is provided with a sliding groove. The outer wall of the slider (333) is slidably engaged with the inner cavity of the sliding groove.

5. A blown film mechanism according to claim 2, characterized in that, The limiting component (34) includes: The first fixing plate (341) is fixedly connected to the side of the connector (32); The second fixing plate (342) is fixedly connected to the side of the arc plate (331); A limiting spring (343) is provided on the side of the second fixing plate (342) away from the first fixing plate (341); A positioning rod (347) is provided, one end of which is fixedly connected to a first fixing plate (341). A positioning groove is provided on the side of the second fixing plate (342) facing the first fixing plate (341). The outer wall of the positioning rod (347) is slidably engaged with the inner cavity of the positioning groove.

6. A blown film mechanism according to claim 5, characterized in that, The limiting component (34) also includes: The guide rod (344) has its outer wall slidably inserted into the second fixing plate (342) and its outer wall slidably inserted into the limiting spring (343). One end of the first fixing plate (341) is provided with a slot (345) that matches the guide rod (344). A limiting block (346) is fixedly connected to one end of a guide rod (344), and a limiting spring (343) is located between the limiting block (346) and the second fixing plate (342).

7. A blown film machine, characterized in that, The blown film machine includes the blown film mechanism as described in any one of claims 1-6.

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