Film thickness detection device of film blowing machine

Abstract

According to the utility model, the thickness detector is transferred and mounted above the film blowing machine winding box from the blowing outlet of the film blowing machine, the frame structure is designed for mounting the thickness detector, the winding is the last process of film production, and the thickness detector is mounted at the position close to the film winding device, so that the film can be conveniently and quickly wound. The thickness of a thin film before rolling can be accurately measured, measured data are more accurate, detection errors are reduced, the frame structure is designed, the thickness detector is installed on the transverse sliding rail of the frame structure, the position of the thickness detector does not need to be manually controlled, an external power source drives the thickness detector to move along the transverse sliding rail, and the detection accuracy is improved. Thickness detection can be performed on the whole film from left to right, and whether the thickness of the whole film is uniform or not can be verified by observing whether the thicknesses of different parts of the film are consistent or not.

Description

Technical Field

[0001] The utility model relates to the field of film blowing machine equipment, in particular to a film thickness detection device of the film blowing machine. Background Art

[0002] The film blowing machine is a plastic processing equipment, which is mainly used for producing plastic film. The principle is that after the plastic raw material is melted, it is made into a film through processes such as blowing, cooling, and winding, and the plastic raw material is added to the hopper of the extruder. Under the action of high temperature and pressure, the plastic raw material is melted and forms a melt. Then, the melt passes through the die of the extruder to form a continuous plastic film. Then, the plastic film is blown up by the blowing device to make it a film with the required thickness. The thickness of the finished film is one of the standards for whether its quality is qualified. Therefore, during the use of the film blowing machine, the thickness of the finished film needs to be detected. For example, the Chinese utility model with patent number CN204736432U discloses a film blowing machine thickness detection device, including: an annular turntable; the annular turntable is provided with an annular slide rail; two moving devices, the moving device is movably mounted on the annular turntable; a folding device, the two ends of the folding device are arranged on the moving device, and the folding device is composed of two folding arms; a detection device, the detection device is arranged in the middle of the folding device and can be radially adjusted.

[0003] There are still some problems in the use of the above documents. The existing film thickness detection device is installed at the film blowing outlet of the film blowing machine. The film thickness detected is the film thickness after the blowing process in the initial production process. However, during the production process, the film needs to go through extrusion, stretching, cooling and other processes. The thickness of the film will also change during these processes. Therefore, the result of thickness detection after the blowing process is completed will produce errors and the accurate thickness parameters cannot be obtained. The existing detection device is fixed at the blowing outlet and cannot be directly moved to other positions of the film blowing machine for fixing and use. At the same time, the existing device can only detect the film thickness at a certain point, and cannot detect the thickness of the entire width of the film. Therefore, it is impossible to determine whether the film thickness is uniform, and there is no guarantee of the product quality of the film. Utility Model Content

[0004] In view of the above existing technical problems, the utility model provides a film thickness detection device for a film blowing machine, which is characterized by comprising a frame structure and a thickness detector, wherein the thickness detector is installed inside the frame structure.

[0005] The frame structure consists of a telescopic rod A, a telescopic rod B, a slide rail A, a slide rail B, a connecting rod A, a connecting plate B, and a transverse slide rail. The connecting rod A is installed on the left side of the film blowing machine winding box, the slide rail A is installed on the left side of the connecting rod A, the telescopic rod A is installed inside the slide rail A, the transverse slide rail is installed on the right side of the top of the telescopic rod A, the telescopic rod B is installed on the right side of the transverse slide rail, the lower end of the telescopic rod B is installed inside the slide rail B, and the left side of the slide rail B is installed on the right side of the film blowing machine winding box.

[0006] Specifically, the thickness detection device is connected to an external power source to provide power for it.

[0007] Beneficial effects of the utility model:

[0008] The utility model installs a detection device above the winding box of the film blowing machine. Winding is the last process of film production. The thickness detection device is installed close to the film winding device, so that the thickness of the film before winding can be accurately measured, so that the measured data is more accurate and the detection error is reduced. At the same time, a frame structure is set, and the thickness detector is installed on the horizontal slide rail of the frame structure. There is no need to manually control the position of the thickness detector. The external power supply drives the thickness detector to move along the horizontal slide rail, and the thickness of the film can be detected from left to right as a whole. By observing whether the thickness of different parts of the film is consistent, it can also be verified whether the overall thickness of the film is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the overall structure of a film thickness detection device for a film blowing machine according to the utility model;

[0010] Figure 2 This is a schematic diagram of the overall structure of a film thickness detection device for a film blowing machine according to the utility model;

[0011] Figure 3 It is a partial structural schematic diagram of a film thickness detection device of a film blowing machine according to the utility model;

[0012] As shown in the figure: 1. Telescopic rod A, 2. Telescopic rod B, 3. Slide rail A, 4. Slide rail B, 5. Connecting rod A, 6. Connecting rod B, 7. Horizontal slide rail, 8. Thickness detector, 9. Film blowing machine winding box. DETAILED DESCRIPTION

[0013] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0015] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] Example 1

[0017] like Figure 1 and 2 As shown, a connecting rod A5 is installed on the left side of the film blowing machine winding box 9, a slide rail A3 is installed on the left side of the connecting rod A5, a telescopic rod A1 is installed on the inner side of the slide rail A3, a transverse slide rail 7 is installed on the right side of the upper end of the telescopic rod A1, a telescopic rod B2 is installed on the right side of the transverse slide rail 7, the inner side of the slide rail B4 is installed below the telescopic rod B2, a connecting rod B6 is installed inside the slide rail B4, and a thickness detector 8 is installed below the transverse slide rail 7.

[0018] Example 2

[0019] When the device is in use, the thickness monitor 8 used is an ultrasonic thickness gauge. Connect the power supply, control the telescopic rod A and telescopic rod B to slide along the slide rail A and slide rail B respectively to adapt to the position of the film reel, and control the height of the telescopic rod A and telescopic rod B to reach a suitable height, and then control the thickness detector 8 to slide along the transverse slide rail to detect the film thickness.

[0020] Example 3

[0021] When using this device, the thickness detector 8 used is an infrared thickness gauge. After connecting the power supply, the telescopic rod A and the telescopic rod B are controlled to slide along the slide rail A and the slide rail B respectively to adapt to the position of the film reel winding, and the height of the telescopic rod A and the telescopic rod B are controlled to reach a suitable height, and then the thickness detector 8 is controlled to slide along the transverse slide rail to detect the thickness of the film.

[0022] Example 4

[0023] When using this device, the thickness detector 8 used is a laser thickness gauge. After connecting the power supply, the telescopic rod A and the telescopic rod B are controlled to slide along the slide rail A and the slide rail B respectively to adapt to the position of the film reel winding, and the height of the telescopic rod A and the telescopic rod B are controlled to reach a suitable height, and then the thickness detector 8 is controlled to slide along the transverse slide rail to detect the thickness of the film.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A film thickness detection device for a film blowing machine, characterized in that The invention comprises a frame structure and a thickness detector, wherein the thickness detector is installed inside the frame structure, and the frame structure is composed of a telescopic rod A, a telescopic rod B, a slide rail A, a slide rail B, a connecting rod A, a connecting plate B and a transverse slide rail. The slide rail A is installed on the left side of the connecting rod A, the telescopic rod A is installed inside the slide rail A, the transverse slide rail is installed on the right side of the upper end of the telescopic rod A, the telescopic rod B is installed on the right side of the transverse slide rail, the lower part of the telescopic rod B is installed on the inner side of the slide rail B, the connecting plate B is installed on the left side of the slide rail B, and the thickness detector is connected to an external power supply.

2. The film thickness detection device for a film blowing machine according to claim 1, characterized in that The thickness monitor may be an ultrasonic thickness gauge.

3. The film thickness detection device for a film blowing machine according to claim 1, characterized in that The thickness monitor may be an infrared thickness gauge.

4. The film thickness detection device for a film blowing machine according to claim 1, characterized in that The thickness monitor can be a laser thickness gauge.

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