A precise positioning plastic film cutting device

Abstract

The utility model discloses a kind of plastic film cutting device of accurate positioning, it is related to plastic film cutting technical field, including base, unwinding roller, conveying roller, mounting bracket, first electric push rod and cutting knife, the top of base is provided with unwinding roller, the side of unwinding roller is provided with conveying roller, the side of conveying roller is provided with mounting bracket, the top of mounting bracket is installed with first electric push rod. The output end of first motor can drive connecting plate to move, so that connecting plate can be positioned to plastic film when moving, then the output end of second motor can drive limit plate to move, so that limit plate can be positioned to plastic film of different width, then start first electric push rod to make it can drive cutting knife to cut plastic film, so that the position of plastic film when cutting can be more accurate, avoid misplacement when cutting to cause error, so that plastic film cutting device can be more convenient when using.

Description

Technical Field

[0001] This utility model relates to the field of plastic film cutting technology, specifically a precise positioning plastic film cutting device. Background Technology

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins, used for packaging and as a coating layer. Plastic packaging and plastic packaging products are gaining an increasingly larger market share, especially composite plastic flexible packaging, which is widely used in the food, pharmaceutical, and chemical industries.

[0003] Most existing plastic film cutting devices directly cut the plastic film during use, which makes the plastic film prone to movement during the cutting process. This leads to the plastic film being easily misaligned during cutting, making it difficult to accurately position and cut the plastic film, and thus making the plastic film cutting device inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a precise positioning plastic film cutting device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precise positioning plastic film cutting device, comprising a base, an unwinding roller, a conveying roller, a mounting frame, a first electric push rod, and a cutting blade.

[0006] As described above, the top of the base is provided with an unwinding roller, one side of the unwinding roller is provided with a conveying roller, one side of the conveying roller is provided with a mounting frame, the top of the mounting frame is provided with a first electric push rod, one end of the first electric push rod is provided with a cutting blade, one end of the mounting frame is provided with a precision positioning mechanism, the precision positioning mechanism includes a fixing frame provided at one end of the mounting frame, the top of the fixing frame is provided with a first motor, and the output end of the first motor is connected to a threaded rod through a coupling.

[0007] As described above, the surface of the threaded rod is provided with a movable plate, one end of the movable plate is provided with a connecting plate, and one end of the connecting plate is provided with symmetrically distributed limiting rods.

[0008] As described above, one end of the fixing frame is provided with symmetrically distributed connecting seats, and one end of each of the two connecting seats is equipped with a second motor. The output end of the second motor is connected to a rotating rod through a coupling.

[0009] As described above, a bidirectional screw is provided inside the connecting seat near one end of the rotating rod, and a bevel gear set is connected between the bidirectional screw and the rotating rod. The surface of the bidirectional screw is provided with symmetrically distributed displacement blocks, and one end of each of the two displacement blocks is provided with a limiting plate extending to the outside of the connecting seat.

[0010] As described above, an auxiliary material handling mechanism is provided on the top of the base near the fixed frame. The auxiliary material handling mechanism includes mounting plates symmetrically distributed on one side of the fixed frame, and a second electric push rod is installed at one end of each of the two mounting plates.

[0011] As mentioned above, each of the two second electric push rods has a movable seat at one end, and a crossbar connects the two movable seats.

[0012] As described above, one end of the crossbar is provided with symmetrically distributed U-shaped seats, and the top of each of the two U-shaped seats is equipped with a third electric push rod, and one end of the third electric push rod is provided with a pressure plate.

[0013] Compared with existing technologies, this precise positioning plastic film cutting device has the following advantages:

[0014] I. This utility model uses the output end of the first motor to drive the connecting plate to move, so that the connecting plate can position the plastic film when it moves, thereby tautning the plastic film cutting device. Then, the output end of the second motor can drive the displacement block to move left and right, so that the displacement block can drive the limiting plate to move. When the limiting plate moves left and right, it can limit the plastic film of different widths. Then, the first electric push rod is activated to drive the cutting blade to cut the plastic film, so that the position of the plastic film during cutting is more accurate, avoiding misalignment and errors during cutting, making the plastic film cutting device more convenient to use.

[0015] Second, this utility model uses a second electric push rod to move the movable seat to one side, which in turn moves the crossbar. Simultaneously, the crossbar moves the U-shaped seat, allowing it to move to one side of the plastic film's tail. Then, activating the third electric push rod moves the pressure plate downwards, limiting the tail of the plastic film and making it more stable during cutting. After cutting, activating the second electric push rod moves the cut plastic film to the other side, allowing for quick removal and preventing it from falling off.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the unwinding roller of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the mounting bracket of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the fixing frame of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the limiting rod of this utility model;

[0021] Figure 5 This is a three-dimensional sectional view of the connector of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the movable base of this utility model.

[0023] In the diagram: 1. Base; 2. Unwinding roller; 3. Conveying roller; 4. Mounting frame; 5. First electric push rod; 6. Cutting blade; 7. Precision positioning mechanism; 701. Fixing frame; 702. First motor; 703. Threaded rod; 704. Moving plate; 705. Connecting plate; 706. Limiting rod; 707. Connecting seat; 708. Second motor; 709. Rotating rod; 710. Bidirectional screw; 711. Bevel gear set; 712. Displacement block; 713. Limiting plate; 8. Auxiliary material handling mechanism; 801. Mounting plate; 802. Second electric push rod; 803. Moving seat; 804. Crossbar; 805. U-shaped seat; 806. Third electric push rod; 807. Pressure plate. Detailed Implementation

[0024] 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.

[0025] like Figures 1-5 As shown, this utility model provides a technical solution: a precise positioning plastic film cutting device, including a base 1, an unwinding roller 2, a conveying roller 3, a mounting frame 4, a first electric push rod 5, and a cutting blade 6.

[0026] like Figure 1 As shown, a unwinding roller 2 is provided at the top of the base 1, a conveying roller 3 is provided on one side of the unwinding roller 2, a mounting frame 4 is provided on one side of the conveying roller 3, a first electric push rod 5 is installed at the top of the mounting frame 4, a cutting blade 6 is provided at one end of the first electric push rod 5, and a precision positioning mechanism 7 is provided at one end of the mounting frame 4. The precision positioning mechanism 7 includes a fixing frame 701 provided at one end of the mounting frame 4, a first motor 702 is installed at the top of the fixing frame 701, and a threaded rod 703 is connected to the output end of the first motor 702 through a coupling.

[0027] By starting the two drive motors, the unwinding roller 2 and the conveying roller 3 can be rotated, so that the unwinding roller 2 can carry the plastic film through the conveying roller 3 and into the mounting frame 4. Then, the first electric push rod 5 is started, so that the first electric push rod 5 can drive the cutting blade 6 to move, so that the cutting blade 6 can cut the plastic film.

[0028] like Figure 3 As shown, a movable plate 704 is provided on the surface of the threaded rod 703, a connecting plate 705 is provided at one end of the movable plate 704, and a symmetrically distributed limiting rod 706 is provided at one end of the connecting plate 705.

[0029] The first motor 702 can drive the threaded rod 703 to rotate, so that the rotation of the threaded rod 703 can drive the moving plate 704, the connecting plate 705 and the limiting rod 706 to move downward.

[0030] like Figure 4 As shown, one end of the fixed frame 701 is provided with symmetrically distributed connecting seats 707. A second motor 708 is installed at one end of each of the two connecting seats 707. The output end of the second motor 708 is connected to a rotating rod 709 through a coupling. A bidirectional screw 710 is provided inside the connecting seat 707 near the rotating rod 709. A bevel gear set 711 is connected between the bidirectional screw 710 and the rotating rod 709. A symmetrically distributed displacement block 712 is provided on the surface of the bidirectional screw 710. A limiting plate 713 extending to the outside of the connecting seat 707 is provided at one end of each of the two displacement blocks 712.

[0031] The output of the second motor 708 can drive the rotating rod 709, the bevel gear set 711 and the bidirectional screw 710 to rotate, so that the displacement block 712 can move. At the same time, the displacement block 712 can drive the limit plate 713 to move.

[0032] like Figures 1-5As shown, by starting the first motor 702, the output end of the first motor 702 drives the threaded rod 703 to rotate. When the threaded rod 703 rotates, it drives the moving plate 704 to move downwards. When the moving plate 704 moves, it drives the connecting plate 705 to move, allowing the connecting plate 705 to position the plastic film, thus tautning the plastic film cutting device. Then, starting the second motor 708, the output end of the second motor 708 drives the rotating rod 709 to rotate. When the rotating rod 709 rotates, it drives the bevel gear set 711 to rotate. When the bevel gear set 711 rotates, it drives the bidirectional screw 710 to rotate, which in turn drives the displacement block 712 to move left and right. When the displacement block 712 moves, it drives the limiting plate 713 to move. When the limiting plate 713 moves left and right, it can limit the plastic film of different widths. Then, the first electric push rod 5 is activated, which drives the cutting blade 6 to cut the plastic film. This makes the position of the plastic film more accurate during cutting, avoids misalignment and errors during cutting, and makes the plastic film cutting device more convenient to use.

[0033] like Figure 6 As shown, an auxiliary material handling mechanism 8 is provided on the top of the base 1 near the fixed frame 701. The auxiliary material handling mechanism 8 includes mounting plates 801 symmetrically distributed on one side of the fixed frame 701. A second electric push rod 802 is installed at one end of each of the two mounting plates 801. A movable seat 803 is provided at one end of each of the two second electric push rods 802. A crossbar 804 is connected between the two movable seats 803.

[0034] The second electric push rod 802 can drive the movable seat 803 to move, and the movable seat 803 can drive the crossbar 804 to move.

[0035] like Figure 6 As shown, one end of the crossbar 804 is provided with symmetrically distributed U-shaped seats 805, and the top of each of the two U-shaped seats 805 is equipped with a third electric push rod 806, and one end of the third electric push rod 806 is provided with a pressure plate 807.

[0036] The movement of the crossbar 804 can drive the U-shaped seat 805 to move, and then the third electric push rod 806 can be activated to drive the pressure plate 807 to move, so that the pressure plate 807 can limit the tail of the film.

[0037] like Figure 1 , Figure 2 and Figure 6As shown, by activating the second electric push rod 802, the second electric push rod 802 can drive the movable seat 803 to move to one side. When the movable seat 803 moves, it can drive the crossbar 804 to move. At the same time, when the crossbar 804 moves, it can drive the U-shaped seat 805 to move to one side of the tail of the plastic film. Then, the third electric push rod 806 is activated, which can drive the pressure plate 807 to move downward. The pressure plate 807 can limit the tail of the plastic film, making the plastic film more stable during cutting. After the plastic film is cut, the second electric push rod 802 is activated, which can drive the cut plastic film to the other side, so that the cut plastic film can be quickly removed and the cut plastic film can be prevented from falling.

[0038] Working principle: The output of the first motor 702 drives the connecting plate 705 to move downward, positioning the plastic film and taut the plastic film cutting device. Then, the output of the second motor 708 drives the rotating rod 709, bevel gear set 711, and bidirectional screw 710 to rotate. The bidirectional screw 710 drives the displacement block 712 to move left and right, which in turn drives the limiting plate 713 to move. The limiting plate 713 limits the plastic film of different widths when moving left and right. Finally, the first electric push rod 5 is activated to drive the cutting blade 6 to cut the plastic film, ensuring precise positioning and avoiding misalignment during cutting. This makes the plastic film cutting device more convenient to use.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision-positioning plastic film cutting device, comprising a base (1), an unwinding roller (2), a conveying roller (3), a mounting frame (4), a first electric push rod (5), and a cutting blade (6), characterized in that: The base (1) is provided with an unwinding roller (2) at its top end. A conveying roller (3) is provided on one side of the unwinding roller (2). A mounting frame (4) is provided on one side of the conveying roller (3). A first electric push rod (5) is installed at the top end of the mounting frame (4). A cutting blade (6) is provided at one end of the first electric push rod (5). A precision positioning mechanism (7) is provided at one end of the mounting frame (4). The precision positioning mechanism (7) includes a fixing frame (701) provided at one end of the mounting frame (4). A first motor (702) is installed at the top end of the fixing frame (701). The output end of the first motor (702) is connected to a threaded rod (703) through a coupling.

2. The precise positioning plastic film cutting device according to claim 1, characterized in that: The surface of the threaded rod (703) is provided with a movable plate (704), one end of the movable plate (704) is provided with a connecting plate (705), and one end of the connecting plate (705) is provided with symmetrically distributed limiting rods (706).

3. The precise positioning plastic film cutting device according to claim 1, characterized in that: One end of the fixed frame (701) is provided with symmetrically distributed connecting seats (707), and a second motor (708) is installed at one end of each of the two connecting seats (707). The output end of the second motor (708) is connected to a rotating rod (709) through a coupling.

4. The precise positioning plastic film cutting device according to claim 3, characterized in that: A bidirectional screw (710) is provided inside the connecting seat (707) near one end of the rotating rod (709). A bevel gear set (711) is connected between the bidirectional screw (710) and the rotating rod (709). A symmetrically distributed displacement block (712) is provided on the surface of the bidirectional screw (710). A limiting plate (713) extending to the outside of the connecting seat (707) is provided at one end of the two displacement blocks (712).

5. The precise positioning plastic film cutting device according to claim 1, characterized in that: An auxiliary material handling mechanism (8) is provided on the top of the base (1) near the fixed frame (701). The auxiliary material handling mechanism (8) includes mounting plates (801) symmetrically distributed on one side of the fixed frame (701). A second electric push rod (802) is installed at one end of each of the two mounting plates (801).

6. The precise positioning plastic film cutting device according to claim 5, characterized in that: Each of the two second electric push rods (802) has a movable base (803) at one end, and a crossbar (804) is connected between the two movable bases (803).

7. The precise positioning plastic film cutting device according to claim 6, characterized in that: One end of the crossbar (804) is provided with symmetrically distributed U-shaped seats (805), and the top ends of the two U-shaped seats (805) are each equipped with a third electric push rod (806), and one end of the third electric push rod (806) is provided with a pressure plate (807).

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