Forming device for producing PET (Polyethylene Terephthalate) sheet

Abstract

The utility model relates to the technical field of PET (Polyethylene Terephthalate) sheet production, in particular to a forming device for producing PET sheets. According to the technical scheme, the device comprises a fixing frame, a calendaring roller A is installed at the position, close to the lower surface, in the fixing frame through a roller shaft A, a rotating motor is installed on one side of the outer surface of the fixing frame, an oil cylinder is installed on the upper surface of the fixing frame, a lifting frame is connected to the tail end of an output shaft of the oil cylinder, and a calendaring roller B is installed in the lifting frame through a roller shaft B; a transmission shaft is installed on one side of the outer surface of the lifting frame, the transmission shaft and the outer surface of the roller shaft B are both sleeved with gears, the transmission shaft and the outer surface of the roller shaft A are both sleeved with synchronous wheels, and the two synchronous wheels are connected through a synchronous belt. In the PET sheet calendaring forming process, the distance between the calendaring rollers can be conveniently adjusted according to production requirements, so that the PET sheet with the required thickness is obtained, shutdown is not needed in the adjusting process, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PET sheet production, in particular to a forming device for producing PET sheets. Background Art

[0002] PET sheet is a transparent plastic sheet made of polyethylene terephthalate (PET resin) through extrusion, stretching, calendering and cooling. It has the advantages of high transparency, no water ripples, no crystallization points, no directionality, no whiteness, strong oil and chemical resistance, good toughness and rigidity, and good impact resistance, which makes it widely used in many fields.

[0003] During the current production process of PET sheets, the spacing between the calendering rollers used for calendering is not easy to adjust and requires shutdown before adjustment. This makes it inconvenient to adjust the thickness of the formed PET sheet according to production needs. To this end, we propose a forming device for producing PET sheets. Utility Model Content

[0004] The purpose of the utility model is to provide a forming device for producing PET sheets, which has the advantage of being able to adjust the distance between calendering rollers according to production requirements during the calendering and forming process of the PET sheets to obtain PET sheets of required thickness, and no machine shutdown is required during the adjustment process, thereby improving the applicability and solving the problem that in the current PET sheet production process, the distance between calendering rollers used for calendering and forming is not easy to adjust and requires shutdown before adjustment, which makes it inconvenient to adjust the thickness of the formed PET sheet according to production requirements.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a forming device for producing PET sheets, comprising a fixed frame, a calendering roller A is installed on the inside of the fixed frame near the lower surface through the roller shaft A, a rotating motor is installed on one side of the outer surface of the fixed frame, an oil cylinder is installed on the upper surface of the fixed frame, the end of the oil cylinder output shaft is connected to a lifting frame, a calendering roller B is installed on the inside of the lifting frame through the roller shaft B, a transmission shaft is installed on one side of the outer surface of the lifting frame, gears are sleeved on the outer surfaces of the transmission shaft and the roller shaft B, synchronous wheels are sleeved on the outer surfaces of the transmission shaft and the roller shaft A, and the two synchronous wheels are connected by a synchronous belt, an electric push rod is installed on the side of the fixed frame near the synchronous belt, and a tensioning pulley is installed on the output end of the electric push rod.

[0006] Preferably, the end of the output shaft of the rotating motor is connected to the end of the roller shaft A.

[0007] Preferably, the two gears are meshed with each other.

[0008] Preferably, sliding rods are connected to both sides of the upper surface of the lifting frame, sliding sleeves are installed at both sides of the upper surface of the fixing frame, and the two sliding rods pass through the two sliding sleeves respectively.

[0009] Preferably, limit shafts are installed on the outer surface of the lifting frame and the inner wall of the fixing frame near the two synchronous wheels.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. The utility model is provided with a fixed frame, a calendering roller A, a rotating motor, an oil cylinder, a lifting frame, a calendering roller B, a roller shaft A, a roller shaft B, a gear, a synchronous belt, a synchronous wheel, an electric push rod and a tension wheel, so that during the calendering process of the PET sheet, the distance between the calendering rollers can be adjusted according to production needs to obtain the PET sheet of the required thickness, and there is no need to stop the machine during the adjustment process, thereby improving the applicability. The rotating motor drives the calendering roller A to rotate through the roller shaft A, and the roller shaft A drives the transmission synchronously through the synchronous wheel and the synchronous belt. When the driving shaft rotates, the transmission shaft drives the roller shaft B and the calendering roller B to rotate synchronously through the two meshing gears, and the calendering roller A and the calendering roller B rotate synchronously towards each other. The PET sheet is calendered when passing between the calendering roller A and the calendering roller B. When the oil cylinder drives the lifting frame to rise and fall, the distance between the calendering roller A and the calendering roller B can be adjusted to control the thickness of the PET sheet after calendering. During the lifting process of the lifting frame, the electric push rod drives the tensioning wheel to move, so that the synchronous belt is in a tensioned state, ensuring the transmission of the synchronous wheel and the synchronous belt.

[0012] 2. The utility model sets a limiting shaft to limit the synchronous belt, so that the wrap angle of the synchronous belt to the synchronous wheel is appropriate, which is beneficial to the transmission between the synchronous wheel and the synchronous belt.

[0013] 3. The utility model provides a slide rod and a slide sleeve. When the lifting frame is raised or lowered, the slide rod inside the slide sleeve rises or falls synchronously and guides the lifting frame, thereby improving the stability of the lifting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 3 It is a partial three-dimensional schematic diagram of the calendering roller A and the calendering roller B of the utility model;

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of A in the figure.

[0018] Reference numerals: 1, calender roll A; 2, rotating motor; 3, fixing frame; 4, calender roll B; 5, lifting frame; 6, sliding sleeve; 7, sliding rod; 8, oil cylinder; 9, roller shaft A; 10, roller shaft B; 11, electric push rod; 12, limiting shaft; 13, tension pulley; 14, synchronous pulley; 15, synchronous belt; 16, gear; 17, transmission shaft. Detailed implementation mode

[0019] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Embodiment 1

[0021] As Figures 1-4 shown, a forming device for producing PET sheets proposed by the present invention includes a fixing frame 3. The fixing frame 3 is in a rectangular shape with a hollow center. Inside the fixing frame 3, near the lower surface, a calender roll A 1 is installed through a roller shaft A 9. The roller shaft A 9 is connected to the fixing frame 3 through a bearing. On one side of the outer surface of the fixing frame 3, a rotating motor 2 is installed. The end of the output shaft of the rotating motor 2 is connected to the end of the roller shaft A 9. The rotating motor 2 drives the calender roll A 1 to rotate through the roller shaft A 9. On the upper surface of the fixing frame 3, an oil cylinder 8 is installed. The end of the output shaft of the oil cylinder 8 is connected to a lifting frame 5. The lifting frame 5 is located inside the fixing frame 3 and above the calender roll A 1. Inside the lifting frame 5, a calender roll B 4 is installed through a roller shaft B 10. When the PET sheet passes between the calender roll A 1 and the calender roll B 4, it is calendered into shape. The roller shaft B 10 is connected to the lifting frame 5 through a bearing. On one side of the outer surface of the lifting frame 5, a transmission shaft 17 is installed. The transmission shaft 17 is connected to the lifting frame 5 through a bearing. Gears 16 are sleeved on the outer surfaces of both the transmission shaft 17 and the roller shaft B 10. The two gears 16 are meshed with each other. When the transmission shaft 17 rotates, it drives the calender roll B 4 to rotate through the two meshed gears 16. Synchronous pulleys 14 are sleeved on the outer surfaces of both the transmission shaft 17 and the roller shaft A 9, and the two synchronous pulleys 14 are connected by a synchronous belt 15. The roller shaft A 9 drives the transmission shaft 17 to rotate through the two synchronous pulleys 14 and the synchronous belt 15. Inside the fixing frame 3, near one side of the synchronous belt 15, an electric push rod 11 is installed, and a tension pulley 13 is installed at the output end of the electric push rod 11. The electric push rod 11 drives the tension pulley 13 to move so that the synchronous belt 15 is in a tensioned state.

[0022] When the present invention is in use, the rotating motor 2 drives the calendering roller A1 to rotate through the roller shaft A9, and at the same time, the roller shaft A9 drives the transmission shaft 17 to rotate through the synchronous wheel 14 and the synchronous belt 15, and the transmission shaft 17 drives the roller shaft B10 and the calendering roller B4 to rotate through the two meshing gears 16, and the calendering roller A1 and the calendering roller B4 rotate synchronously towards each other. The PET sheet is calendered when passing between the calendering roller A1 and the calendering roller B4, and the oil cylinder 8 can adjust the distance between the calendering roller A1 and the calendering roller B4 when driving the lifting frame 5 to rise and fall, so as to control the thickness of the PET sheet after calendering. In the process of lifting the lifting frame 5, the electric push rod 11 drives the tensioning wheel 13 to move, so that the synchronous belt 15 is in a tensioned state, thereby ensuring the transmission of the synchronous wheel 14 and the synchronous belt 15.

[0023] Example 2

[0024] like Figure 1 and Figure 2 As shown, the present invention proposes a forming device for producing PET sheets. Compared with the first embodiment, the present embodiment further includes slide bars 7 connected to both sides of the upper surface of the lifting frame 5, and slide sleeves 6 are installed on both sides of the upper surface of the fixing frame 3, and the two slide bars 7 pass through the two slide sleeves 6 respectively.

[0025] In this embodiment, during the lifting process of the lifting frame 5 , the sliding rod 7 inside the sliding sleeve 6 rises and falls synchronously, and plays a guiding role for the lifting frame 5 , so as to improve the stability of the lifting frame 5 .

[0026] Example 3

[0027] like Figure 2-Figure 4 As shown, the present invention proposes a forming device for producing PET sheets. Compared with the first embodiment, this embodiment also includes limiting shafts 12 installed on the outer surface of the lifting frame 5 and the inner wall of the fixed frame 3 near the two synchronous wheels 14, and the two limiting shafts 12 are respectively connected to the outer surface of the lifting frame 5 and the inner wall of the fixed frame 3 through bearings.

[0028] In this embodiment, the limiting shaft 12 limits the synchronous belt 15 so that the wrap angle of the synchronous belt 15 with respect to the synchronous wheel 14 is appropriate, which is beneficial to the transmission between the synchronous wheel 14 and the synchronous belt 15 .

[0029] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A forming device for producing PET sheets, comprising a fixing frame (3), characterized in that: A calendering roller A (1) is installed near the lower surface of the fixed frame (3) through a roller shaft A (9), a rotating motor (2) is installed on one side of the outer surface of the fixed frame (3), an oil cylinder (8) is installed on the upper surface of the fixed frame (3), and the end of the output shaft of the oil cylinder (8) is connected to a lifting frame (5), and a calendering roller B (4) is installed inside the lifting frame (5) through a roller shaft B (10), and a transmission shaft (17) is installed on one side of the outer surface of the lifting frame (5), and the outer surfaces of the transmission shaft (17) and the roller shaft B (10) are both sleeved with gears (16), and the outer surfaces of the transmission shaft (17) and the roller shaft A (9) are both sleeved with synchronous wheels (14), and the two synchronous wheels (14) are connected by a synchronous belt (15), and an electric push rod (11) is installed on the side of the fixed frame (3) near the synchronous belt (15), and a tensioning wheel (13) is installed at the output end of the electric push rod (11).

2. A forming device for producing PET sheets according to claim 1, characterized in that: The end of the output shaft of the rotating motor (2) is connected to the end of the roller shaft A (9).

3. The forming device for producing PET sheets according to claim 1, characterized in that: The two gears (16) are meshed with each other.

4. The forming device for producing PET sheets according to claim 1, characterized in that: Slide rods (7) are connected to both sides of the upper surface of the lifting frame (5), and slide sleeves (6) are installed at both sides of the upper surface of the fixing frame (3), and the two slide rods (7) pass through the two slide sleeves (6) respectively.

5. The forming device for producing PET sheets according to claim 1, characterized in that: Limiting shafts (12) are installed on the outer surface of the lifting frame (5) and the inner wall of the fixing frame (3) at positions close to the two synchronous wheels (14).

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