Electric adjusting propeller strut device

Abstract

The utility model discloses an electric adjusting herringbone frame device which comprises a left herringbone plate and a right herringbone plate which form a material passing gap after the tops of the left herringbone plate and the right herringbone plate are close to each other, and is characterized in that the top of the left herringbone plate is rotatably connected with a rack of a film blowing machine through a left shaft, and the top of the right herringbone plate is rotatably connected with a swing rod through a right shaft; the swing rod is arranged on a machine frame of the film blowing machine in a swing mode and connected with the air cylinder, the bottom of the left herringbone plate is hinged to the left connecting plate, the left connecting plate is hinged to the left lead screw sleeve, the bottom of the right herringbone plate is hinged to the right connecting plate, the right connecting plate is hinged to the right lead screw sleeve, and a lead screw penetrates through inner hole threads of the left lead screw sleeve and the right lead screw sleeve. The rod end of the lead screw is connected with a motor. The opening degree of the herringbone plate can be electrically adjusted according to the diameter of a film pipe of a film material, a connector of the film material is prevented from being clamped in the film blowing production, and the herringbone plate anti-falling protection function and the film pipe surface scratching prevention function are further achieved.

Description

Technical Field

[0001] This utility model relates to a blown film machine, specifically to a V-frame device for the blown film machine. Background Technology

[0002] Film blowing machines are used for the production of various plastic bags. During the film blowing process, the film material blown out by the die head of the film blowing machine is in the shape of a tube of a certain diameter, commonly known as a film tube. The film tube is first flattened by the A-frame device of the film blowing machine and then wound up. For different specifications of plastic bags, the diameter of the film tube varies, which requires different opening sizes for the herringbone frame (i.e., the distance between the bottom of the left and right herringbone plates is different; when the film tube diameter is larger, the distance between the bottom of the left and right herringbone plates should be greater, and when the film tube diameter is smaller, the distance between the bottom of the left and right herringbone plates should be smaller). Currently, the opening size adjustment of the herringbone frame is generally done manually, which is inefficient. In addition, during the flattening process of the film tube, the material passage gap formed after the left and right herringbone plates approach each other at the top cannot be large. However, when the blown film machine die head starts blowing the film tube, the size of the film joint is often large, and the film joint is prone to getting stuck when passing through the material passage gap, affecting normal blown film production. Furthermore, to accommodate the passage of larger film joints, when the film gap is set elastically, the herringbone plates are prone to falling. Finally, when the film tube is flattened by the left and right herringbone plates, the surface of the film tube is easily scratched. Utility Model Content

[0003] In view of the technical problems existing in the prior art, the purpose of this utility model is to provide an electrically adjustable A-frame device that can electrically adjust the opening of the A-frame, avoid the joint of the membrane material getting stuck, and also has the functions of preventing the A-frame from falling and preventing scratches on the surface of the membrane tube.

[0004] This utility model is implemented through the following technical solution:

[0005] An electrically adjustable A-frame device includes a left A-frame and a right A-frame. The left and right A-frames are close to each other at the top and far apart at the bottom. When the left and right A-frames are close together at the top, they form a material passage gap. The device is characterized in that: the top of the left A-frame is rotatably connected to the frame of the blown film machine via a left shaft; the top of the right A-frame is rotatably connected to a swing rod via a right shaft; the swing rod is oscillatingly mounted on the frame of the blown film machine and is connected to a cylinder; the bottom of the left A-frame is hinged to a left connecting plate, which is hinged to a left lead screw sleeve; the bottom of the right A-frame is hinged to a right connecting plate, which is hinged to a right lead screw sleeve; the inner threads of the left and right lead screw sleeves rotate in opposite directions; a lead screw passes through the inner threads of the left and right lead screw sleeves; the end of the lead screw is connected to a motor, which is mounted on the frame of the blown film machine.

[0006] A mounting plate is fixedly connected to the frame of the blown film machine. An arc-shaped groove is opened on the mounting plate at the position corresponding to the end of the right shaft. The end of the right shaft extends outward and falls into the arc-shaped groove, where it is supported.

[0007] A window is opened at the top of the mounting plate, and an adjusting screw seat is fixedly connected to the edge of the window. An adjusting screw is set on the adjusting screw seat to limit the downward swing of the swing rod.

[0008] Support plates are installed at intervals from top to bottom on the inner sides of the left and right herringbone panels, and the surface of the support plates is covered with velvet.

[0009] The electrically adjustable A-frame device using the above technical solution allows for electric adjustment of the A-frame opening according to the diameter of the film tube. Secondly, the top of the right A-frame can open outwards under the action of a cylinder, increasing the material passage gap. Larger film joints can then pass smoothly through the gap without getting stuck, ensuring normal blown film production. After a larger film joint passes through the gap, the cylinder returns to its original position, reducing the gap. The adjusting screw ensures the lower limit of the swing arm's downward swing, maintaining a stable material passage gap. Furthermore, the arc-shaped groove supporting the right shaft end prevents the right A-frame from falling due to movement, providing some protection. Finally, the support plates on the inner sides of the left and right A-frames are covered with fleece, effectively preventing scratches on the film tube surface during contact. Attached Figure Description

[0010] The present invention includes the following figures:

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 for Figure 1 Enlarged view at the top.

[0013] In the diagram: 1. Left herringbone plate, 2. Right herringbone plate, 3. Left shaft, 4. Right shaft, 5. Left connecting plate, 6. Left lead screw sleeve, 7. Right connecting plate, 8. Right lead screw sleeve, 9. Lead screw, 10. Base plate, 11. Motor, 12. Support plate, 13. Swing rod, 14. Swing shaft, 15. Adjusting screw seat, 16. Adjusting screw, 17. Window, 18. Mounting plate, 19. Cylinder, 20. Arc groove, 21. Material passage gap. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0015] As shown in the figure, the electric adjustable A-frame device of this utility model includes a left A-frame plate 1 and a right A-frame plate 2. Support plates 12 are spaced apart from top to bottom on the inner sides of the left and right A-frame plates. The surfaces of the support plates 12 are covered with fleece to prevent scratching the surface of the passing film tube. The left and right A-frame plates are close to each other at the top and far apart at the bottom. When the left and right A-frame plates are close together at the top, they form a material passage gap 21. A mounting plate 18 is fixedly connected to the frame of the blown film machine. A left shaft 3 is fixedly connected to the top of the left A-frame plate 1, and the left shaft 3 is rotatably connected to the mounting plate 18. A right shaft 3 is fixedly connected to the top of the right A-frame plate 2. Shaft 4, right shaft 4 is rotatably connected to swing rod 13. Swing rod 13 is swayably connected to mounting plate 18 via swing shaft 14. Swing rod 13 is connected to cylinder 19. The bottom of left herringbone plate 1 is hinged to left connecting plate 5. Left connecting plate 5 is hinged to left lead screw sleeve 6. The bottom of right herringbone plate 2 is hinged to right connecting plate 7. Right connecting plate 7 is hinged to right lead screw sleeve 8. The inner threads of left and right lead screw sleeves are turned in opposite directions. Lead screw 9 passes through the inner threads of left and right lead screw sleeves. The rod end of lead screw 9 is connected to motor 11. Motor 11 is mounted on base plate 10 on frame of blown film machine. The mounting plate 18 has an arc-shaped groove 20 at the position corresponding to the end of the right shaft 4. The end of the right shaft 4 extends outward and falls into the arc-shaped groove 20, which supports it. A window 17 is opened on the upper part of the mounting plate 18. An adjusting screw seat 15 is fixedly connected to the edge of the window 17. An adjusting screw 16 is provided on the adjusting screw seat 15, which faces the top right side of the swing rod 13 to limit the downward swing of the swing rod 13 so that the material passage gap 21 can be stably maintained.

Claims

1. An electrically adjustable A-frame device, comprising a left A-frame plate and a right A-frame plate, wherein the left and right A-frame plates are close to each other at the top and far apart at the bottom, and a material passage gap is formed when the left and right A-frame plates are close to each other at the top, characterized in that: The top of the left herringbone plate is rotatably connected to the frame of the blown film machine via a left shaft. The top of the right herringbone plate is rotatably connected to a swing rod via a right shaft. The swing rod is swayable and mounted on the frame of the blown film machine. The swing rod is connected to a cylinder. The bottom of the left herringbone plate is hinged to a left connecting plate, which is hinged to a left lead screw sleeve. The bottom of the right herringbone plate is hinged to a right connecting plate, which is hinged to a right lead screw sleeve. The inner threads of the left and right lead screw sleeves rotate in opposite directions. A lead screw passes through the inner threads of the left and right lead screw sleeves. The end of the lead screw is connected to a motor, which is mounted on the frame of the blown film machine.

2. The electrically adjustable A-frame device according to claim 1, characterized in that: A mounting plate is fixedly connected to the frame of the blown film machine. An arc-shaped groove is opened on the mounting plate at the position corresponding to the end of the right shaft. The end of the right shaft extends outward and falls into the arc-shaped groove, where it is supported.

3. The electrically adjustable A-frame device according to claim 2, characterized in that: A window is opened at the top of the mounting plate, and an adjusting screw seat is fixedly connected to the edge of the window. An adjusting screw is set on the adjusting screw seat to limit the downward swing of the swing rod.

4. The electrically adjustable A-frame device according to claim 1, characterized in that: Support plates are installed at intervals from top to bottom on the inner sides of the left and right herringbone panels, and the surface of the support plates is covered with velvet.

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