Novel film pressing forming mechanism for PE protective film

Abstract

The utility model relates to a novel film pressing forming mechanism of a PE protective film, which comprises a bottom plate and two side frames fixedly connected to the top of the bottom plate, the side frames are arranged in a [shape, sliding plates are arranged above and below the horizontal sections of the side frames, two driven rods are rotatably connected between the two corresponding sliding plates, and the driven rods are connected with the bottom plate. A friction extrusion part is arranged above the bottom plate; the top of the bottom plate is rotationally connected with a lead screw, the lead screw rotationally penetrates through the side frame, two sections of threads with opposite rotating directions are arranged on the peripheral surface of the lead screw, the two sections of threads on the peripheral surface of the lead screw are in threaded connection with the two corresponding sliding plates respectively, and the top of the bottom plate is fixedly connected with a plurality of limiting plates. The utility model relates to the technical field of PE protective films. A worker can adjust the distance between the two first friction rollers and the two second friction rollers by rotating the two rotating discs, so that the device is suitable for thin films needing to be processed into different thicknesses, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PE protective films, in particular to a novel film pressing and forming mechanism for PE protective films. Background Art

[0002] PE protective film is the simplest macromolecular organic compound and the most widely used macromolecular material in the world today. PE protective film uses special polyethylene (PE) plastic film as the base material and is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene according to different densities. After extrusion, PE protective film is often blown out into a round film by a blow molding machine, which is first conducted and transported by a cylindrical guide mechanism, and then sent to a film pressing mechanism to press the round film into a flat film, which requires a film pressing molding mechanism.

[0003] Most of the current film forming mechanisms are such that the film is squeezed by two rotating friction rollers and transported forward by the friction rollers. However, most traditional film forming mechanisms are not convenient for adjusting the distance between the two friction rollers to adapt to the need to process films of different thicknesses, so they are not suitable for use. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a new film pressing and forming mechanism for a PE protective film, so as to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A novel film pressing and forming mechanism for a PE protective film, comprising a bottom plate and two side frames fixedly connected to the top of the bottom plate, the side frames being arranged in a 匚 shape, a sliding plate being arranged above and below the horizontal section of the side frames, two driven rods being rotatably connected between the two corresponding sliding plates, and a friction extrusion member being arranged above the bottom plate;

[0007] A lead screw is rotatably connected to the top of the base plate, and the lead screw rotates through the side frame. The outer circumference of the lead screw is provided with two sections of threads with opposite rotation directions, and the two sections of threads on the outer circumference of the lead screw are respectively threadedly connected to the corresponding two sliding plates. A plurality of limit plates are fixedly connected to the top of the base plate, and the limit plates slide through the corresponding two sliding plates. A driving part is provided on one side of one of the side frames.

[0008] Furthermore, the driving part includes a motor fixedly connected to one side of the side frame, the output end of the motor is transmission-connected to a worm, one side of the side frame is fixedly connected to two support plates, a rotating rod is rotatably penetrated through one side of the support plate, a worm wheel is fixedly sleeved on the outer circumference of the rotating rod, the two worm wheels are meshed with the worm, and a linkage part is arranged between the rotating rod and the driven rod.

[0009] Further, the linkage part includes a fixing plate fixedly connected to one side of the sliding plate. A square rod is rotatably inserted through the fixing plate on one side through a bearing seat. Square grooves are formed at the top and bottom ends of the rotating rod, and a part of the square rod is slidably inserted into the corresponding square groove. The end of the square rod away from the rotating rod is drivingly connected to the corresponding driven rod through a bevel gear set.

[0010] Further, a turntable is fixedly connected to the top end of the lead screw.

[0011] Further, the friction extrusion member includes two first friction rollers and two second friction rollers. The first friction rollers and the second friction rollers are fixedly sleeved on the outer peripheral sides of the corresponding driven rods. The two first friction rollers are arranged vertically, and the two second friction rollers are arranged vertically. The PE protective film passes between the two first friction rollers and between the two second friction rollers.

[0012] Further, the distance between the two second friction rollers is less than the distance between the two first friction rollers, and the transmission direction of the film is from the first friction roller towards the second friction roller.

[0013] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0014] 1. For the novel film pressing and forming mechanism of a PE protective film, by rotating the two turntables, the staff can adjust the distance between the two first friction rollers and the two second friction rollers, so as to be applicable to films with different thicknesses to be processed, improving the applicability of the device.

[0015] 2. For the novel film pressing and forming mechanism of a PE protective film, the two first friction rollers and the two second friction rollers are only driven to rotate by one motor, reducing the cost of the film pressing and forming mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a three-dimensional view of the novel film pressing and forming mechanism of a PE protective film in this embodiment;

[0018] Figure 2 is a side view of the novel film pressing and forming mechanism of a PE protective film in this embodiment;

[0019] Figure 3It is this embodiment Figure 1 and is an enlarged view of location A in this embodiment.

[0020] In the figure, 1 is a bottom plate; 2 is a side frame; 3 is a sliding plate; 4 is a driven rod; 5 is a friction extrusion member; 51 is a first friction roller; 52 is a second friction roller; 6 is a lead screw; 7 is a limit plate; 8 is a driving part; 81 is a motor; 82 is a worm; 83 is a support plate; 84 is a rotating rod; 85 is a worm gear; 86 is a linkage part; 861 is a fixing plate; 862 is a square rod; 863 is a square groove; 864 is a bevel gear set; 9 is a turntable. Specific embodiments

[0021] The following further elaborates on the present utility model in detail with reference to the accompanying drawings.

[0022] Embodiment:

[0023] Referring to Figures 1 to 3 , a novel film pressing and forming mechanism for a PE protective film disclosed by the present utility model includes a bottom plate 1 and two side frames 2 fixedly connected to the top of the bottom plate 1. The side frames 2 are arranged in a U shape. Sliding plates 3 are provided above and below the horizontal section of the side frames 2. Two driven rods 4 are rotatably connected between the corresponding two sliding plates 3. A friction extrusion member 5 is provided above the bottom plate 1;

[0024] The top of the bottom plate 1 is rotatably connected with a lead screw 6. The lead screw 6 rotates through the side frame 2, and the top end of the lead screw 6 is fixedly connected with a turntable 9. Two sections of threads with opposite helix directions are provided on the outer peripheral surface of the lead screw 6, and the two sections of threads on the outer peripheral surface of the lead screw 6 are respectively threadedly connected to the corresponding two sliding plates 3. A plurality of limit plates 7 are fixedly connected to the top of the bottom plate 1. The limit plates 7 slidably pass through the corresponding two sliding plates 3. A driving part 8 is provided on one side of one of the side frames 2.

[0025] In this embodiment, the limit plates 7 fixedly pass through the horizontal section of the side frame 2. The PE protective film is conveyed and extrusion-formed through the friction extrusion member 5.

[0026] In a further preferred embodiment of the present utility model, as Figure 2 shown, the friction extrusion member 5 includes two first friction rollers 51 and two second friction rollers 52. The first friction rollers 51 and the second friction rollers 52 are both fixedly sleeved on the outer peripheral sides of the corresponding driven rods 4. The two first friction rollers 51 are arranged vertically, and the two second friction rollers 52 are arranged vertically. The PE protective film passes between the two first friction rollers 51 and between the two second friction rollers 52.

[0027] In this embodiment, the driving part 8 drives the two first friction rollers 51 to rotate in opposite directions, and at the same time, the two second friction rollers 52 rotate in opposite directions, thereby conveying the PE protective film to move, and the PE protective film is extrusion-formed when passing through the two first friction rollers 51 and the two second friction rollers 52.

[0028] When it is necessary to form PE protective films with different thicknesses, the staff rotate the two turntables 9 simultaneously, driving the two lead screws 6 to rotate. The rotation of the lead screws 6 drives the two sliding plates 3 to move in opposite directions. Therefore, the distance between the two first friction rollers 51 changes, and the distance between the two second friction rollers 52 changes to adapt to the thickness of the PE protective film, improving the applicability of the device.

[0029] In a further preferred embodiment of the present utility model, as Figure 1 and Figure 3 shown, the driving part 8 includes a motor 81 fixedly connected to one side of the side frame 2. The output end of the motor 81 is drivingly connected with a worm 82. Two support plates 83 are fixedly connected to one side of the side frame 2. A rotating rod 84 is rotatably penetrated through one side of the support plate 83. A worm gear 85 is fixedly sleeved on the outer peripheral surface of the rotating rod 84. Both worm gears 85 are engaged with the worm 82. A linkage part 86 is arranged between the rotating rod 84 and the driven rod 4.

[0030] In this embodiment, two support frames are fixedly connected to the corresponding side plate. The worm 82 rotates through the two support frames, and the support frames are used to support the worm 82. When the motor 81 works, it drives the worm 82 to rotate, and the worm 82 drives the two worm gears 85 to rotate, thereby driving the two rotating rods 84 to rotate.

[0031] In a further preferred embodiment of the present utility model, as Figure 3 shown, the linkage part 86 includes a fixing plate 861 fixedly connected to one side of the sliding plate 3. A square rod 862 is rotatably penetrated through one side of the fixing plate 861 through a bearing seat. Square grooves 863 are formed at the top and bottom ends of the rotating rod 84. Part of the square rod 862 is slidably inserted into the corresponding square groove 863. The end of the square rod 862 away from the rotating rod 84 is drivingly connected to the corresponding driven rod 4 through a bevel gear set 864.

[0032] In this embodiment, when the rotating rod 84 rotates, it drives the square rod 862 to rotate. The square rod 862 drives the driven rod 4 to rotate through the bevel gear set 864, thereby driving the corresponding two first friction rollers 51 and the corresponding two second friction rollers 52 to rotate, and the rotation directions of the two first friction rollers 51 are opposite, and the rotation directions of the two second friction rollers 52 are also opposite.

[0033] When the sliding plate 3 moves relative to the side frame 2, the square rod 862 slides in the square groove 863. Therefore, the vertical movement of the sliding plate 3 will not affect the rotation of the two first friction rollers 51 and the two second friction rollers 52 driven by the motor 81 during operation. Compared with the traditional structure that requires one driven rod 4 to cooperate with one driving part, this embodiment reduces the use of the motor 81 and lowers the processing cost.

[0034] In a further preferred embodiment of the present utility model, as Figure 2As shown, the distance between the two second friction rollers 52 is less than the distance between the two first friction rollers 51, and the film is transported from the first friction roller 51 towards the second friction roller 52.

[0035] In this embodiment, the PE protective film is first passed through the two first friction rollers 51 during transportation and is pre-extruded, and then passed through the two second friction rollers 52 to be finally extruded, ensuring the uniform thickness of the PE protective film and improving the forming quality of the PE protective film.

[0036] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A new film pressing and forming mechanism for a PE protective film, comprising a bottom plate (1) and two side frames (2) fixedly connected to the top of the bottom plate (1), wherein the side frames (2) are arranged in a U shape, and are characterized in that: Sliding plates (3) are arranged above and below the horizontal section of the side frame (2); two driven rods (4) are rotatably connected between the two corresponding sliding plates (3); and a friction extrusion member (5) is arranged above the bottom plate (1); The top of the base plate (1) is rotatably connected to a lead screw (6), which rotatably passes through the side frame (2). The outer circumference of the lead screw (6) is provided with two sections of threads with opposite rotation directions, and the two sections of the threads on the outer circumference of the lead screw (6) are respectively threadedly connected to the corresponding two sliding plates (3). The top of the base plate (1) is fixedly connected to a plurality of limit plates (7), and the limit plates (7) slide through the corresponding two sliding plates (3). A driving part (8) is provided on one side of one of the side frames (2).

2. The novel film pressing and forming mechanism of a PE protective film according to claim 1 is characterized in that: The driving part (8) comprises a motor (81) fixedly connected to one side of the side frame (2); the output end of the motor (81) is drivingly connected to a worm (82); one side of the side frame (2) is fixedly connected to two support plates (83); a rotating rod (84) is rotatably penetrated through one side of the support plate (83); a worm wheel (85) is fixedly sleeved on the outer peripheral surface of the rotating rod (84); the two worm wheels (85) are both meshed with the worm (82); and a linkage part (86) is provided between the rotating rod (84) and the driven rod (4).

3. The novel film pressing and forming mechanism of a PE protective film according to claim 2 is characterized in that: The linkage part (86) comprises a fixed plate (861) fixedly connected to one side of the sliding plate (3); a square rod (862) is rotatably provided on one side of the fixed plate (861) through a bearing seat; square grooves (863) are provided at the top and bottom ends of the rotating rod (84); a portion of the square rod (862) is slidably inserted into the corresponding square groove (863); and one end of the square rod (862) away from the rotating rod (84) is transmission-connected to the corresponding driven rod (4) through a bevel gear set (864).

4. The novel film pressing and forming mechanism of a PE protective film according to claim 3 is characterized in that: A rotating disk (9) is fixedly connected to the top end of the lead screw (6).

5. The novel film pressing and forming mechanism of a PE protective film according to claim 4 is characterized in that: The friction extrusion member (5) comprises two first friction rollers (51) and two second friction rollers (52); the first friction rollers (51) and the second friction rollers (52) are both fixedly sleeved on the outer peripheral side of the corresponding driven rod (4); the two first friction rollers (51) are arranged in an up-and-down arrangement; the two second friction rollers (52) are arranged in an up-and-down arrangement; and a PE protective film passes between the two first friction rollers (51) and between the two second friction rollers (52).

6. The novel film pressing and forming mechanism of a PE protective film according to claim 5 is characterized in that: The distance between the two second friction rollers (52) is smaller than the distance between the two first friction rollers (51), and the transmission direction of the film is from the first friction roller (51) toward the second friction roller (52).

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