Tension adjusting device of film blowing machine for producing plastic protective film

Abstract

The utility model belongs to the technical field of polymer packaging new materials, and discloses a film blowing machine tension adjusting device for plastic protective film production, which comprises a mounting plate, a mounting frame fixedly mounted on the surface of the mounting plate, a film blowing machine fixedly mounted in the mounting frame, a mounting rack arranged in the film blowing machine, and a tension adjusting device arranged on the mounting rack, connecting rods are rotationally connected to the two sides of the surface of the mounting frame correspondingly, and a positioning plate is fixedly mounted at one end of each connecting rod. In the using process, a servo motor is powered on by a worker, the output end of the servo motor drives a reciprocating lead screw to rotate, when the reciprocating lead screw rotates, the reciprocating lead screw drives a telescopic plate to move up and down through an arc-shaped plate, and when the telescopic plate moves up and down, the telescopic plate slides in a supporting seat; the telescopic plate drives the connecting rod to move up and down, when the connecting rod moves, the roller is driven to move up and down, the roller can support the protective film, and the effect of facilitating personnel to adjust the tension of the protective film is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new polymer packaging materials, in particular to a film blowing machine tension adjustment device for producing plastic protective films. Background Art

[0002] The film blowing machine heats and melts plastic particles and then blows them into film. Its main working process is: add dry polyethylene particles into the lower hopper, and the particles enter the screw from the hopper by their own weight. When the particles come into contact with the bevel of the thread, the rotating bevel surface produces a thrust perpendicular to the bevel surface on the plastic, pushing the plastic particles forward. During the pushing process, the plastic gradually melts due to the friction between the plastic and the screw, the plastic and the barrel, the collision and friction between the particles, and the external heating of the barrel. The molten plastic is filtered through the machine head to remove impurities and comes out from the die head. It is cooled by the air ring, blown, and rolled into a roll through the herringbone plate, traction roller, and winding. In order to improve the quality and efficiency of film rolling, it is necessary to add a film tension adjustment device between the film roll and the die head.

[0003] For example, the utility model with publication number CN217319299U discloses an automatic film gap adjustment device for a film blowing machine and a film blowing machine, including a first distance sensor for monitoring the position of the forming section, the first distance sensor is connected to a PLC controller, the PLC controller is connected to an actuator for adjusting the film gap of the film blowing machine; the position of the top of the bubble section or the bottom of the forming section monitored by the first distance sensor corresponds to the position of a film gap adjustment mechanism provided on the film blowing machine; the actuator is connected to the film gap adjustment mechanism. The automatic film gap adjustment device for a film blowing machine of the utility model can adjust the film gap timely and accurately, reducing the technical requirements of workers and reducing the workload.

[0004] When the protective film is rolled into a roll, the protective film is not tight enough. During the tightening process, it is inconvenient to adjust the tension. When the tension roller is damaged, it is inconvenient to replace the tension roller. Therefore, a tension adjustment device for a film blowing machine for producing plastic protective film is proposed to solve the above problems. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a tension adjustment device for a film blowing machine for producing plastic protective film, which can solve the problems that when the protective film is rolled into a roll, the protective film will not be tightened enough, the tension is inconvenient to adjust during the tightening process, and the tension roller is inconvenient to replace when it is damaged.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tension adjustment device for a film blowing machine for producing plastic protective film, comprising a mounting plate, a mounting frame is fixedly mounted on the surface of the mounting plate, a film blowing machine is fixedly mounted inside the mounting frame, a mounting frame is provided inside the film blowing machine, connecting rods are rotatably connected to both sides of the surface of the mounting frame, a positioning plate is fixedly mounted on one end of the connecting rod, a mounting groove is opened on the surface of the positioning plate, a positioning assembly is provided inside the mounting groove, and an adjustment assembly is provided on one side of the surface of the connecting rod.

[0007] Preferably, a protective cover is fixedly mounted on one side of the surface of the mounting plate, a discharge frame is fixedly mounted on the surface of the protective cover, and a guide groove is provided on the surface of the discharge frame.

[0008] Preferably, the positioning assembly includes sliding grooves on both sides of the surface of the positioning plate, a positioning block is slidably connected inside the sliding groove, a movable plate is fixedly installed on the surface of the positioning block, a through groove is provided on the surface of the movable plate, a positive and negative threaded rod is penetrated by the internal thread of the through groove, and a control plate is fixedly installed on one end of the positive and negative threaded rod.

[0009] Preferably, a roller is provided inside the installation groove opened on the surface of the positioning plate, and limiting plates are fixedly installed at both ends of the roller, and the diameter of the limiting plates is larger than the diameter of the installation groove.

[0010] Preferably, the adjustment assembly includes support seats fixedly mounted on both sides of the surface of the mounting plate, a sliding groove is provided on the surface of the support seat, a telescopic plate is slidably connected inside the sliding groove, an arc plate is fixedly mounted on one side of the telescopic plate surface, a thread groove is provided on the surface of the arc plate, a reciprocating screw rod is penetrated by the internal thread of the thread groove, and a servo motor is fixedly mounted on the bottom of the reciprocating screw rod.

[0011] Preferably, a support plate is fixedly installed in the middle of the surface of the connecting rod, a rotating rod is rotatably connected between the support plates, and an anti-slip pad is provided on the surface of the rotating rod.

[0012] Preferably, a stabilizing block is fixedly mounted on the back of the mounting frame, and the bottom of the stabilizing block is fixedly connected to one side of the surface of the mounting plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model is provided with an installation frame, a film blowing machine, a connecting rod and an adjusting component. During use, a person connects the servo motor to a power source, and its output end will drive the reciprocating screw to rotate. When the reciprocating screw rotates, the reciprocating screw will drive the telescopic plate to move up and down through the arc plate. When the telescopic plate moves up and down, the telescopic plate will slide inside the support seat, and the telescopic plate will drive the connecting rod to move up and down. When the connecting rod moves, it will drive the roller to move up and down, and the roller will support the protective film, thereby facilitating the person to adjust the tension of the protective film.

[0015] The utility model is provided with a positioning plate and a positioning component. During use, a person places the roller inside the positioning plate, and then rotates the forward and reverse threaded rods through the positioning plate. When the forward and reverse threaded rods rotate, the forward and reverse threaded rods will drive the moving plate to slide inside the positioning plate. When the positioning block moves, it will drive the positioning block to move toward the middle, and the positioning block will clamp the roller, which makes it convenient for people to replace and quickly disassemble the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the positioning component of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the adjustment component of the utility model.

[0020] In the figure: 1. mounting plate; 2. mounting frame; 3. film blowing machine; 4. mounting frame; 5. connecting rod; 6. positioning plate; 7. positioning assembly; 71. positioning block; 72. moving plate; 73. positive and negative threaded rod; 74. control panel; 8. adjustment assembly; 81. support seat; 82. telescopic plate; 83. arc plate; 84. reciprocating screw rod; 85. servo motor; 9. protective cover; 10. discharge frame; 11. roller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] like Figures 1 to 4As shown, the utility model provides a tension adjustment device for a film blowing machine for producing a plastic protective film, comprising a mounting plate 1, a mounting frame 2 is fixedly mounted on the surface of the mounting plate 1, a stabilizing block is fixedly mounted on the back of the mounting frame 2, the bottom of the stabilizing block is fixedly connected to one side of the surface of the mounting plate 1, a film blowing machine 3 is fixedly mounted inside the mounting frame 2, a mounting frame 4 is arranged inside the film blowing machine 3, connecting rods 5 are rotatably connected to both sides of the surface of the mounting frame 2, a supporting plate is fixedly mounted on the middle part of the surface of the connecting rod 5, a rotating rod is rotatably connected between the supporting plates, an anti-slip pad is arranged on the surface of the rotating rod, a positioning plate 6 is fixedly mounted on one end of the connecting rod 5, a mounting groove is provided on the surface of the positioning plate 6, a positioning assembly 7 is arranged inside the mounting groove, an adjusting assembly 8 is arranged on one side of the surface of the connecting rod 5, a protective cover 9 is fixedly mounted on one side of the surface of the mounting plate 1, a discharging frame 10 is fixedly mounted on the surface of the protective cover 9, a guide groove is provided on the surface of the discharging frame 10, a roller 11 is arranged inside the mounting groove provided on the surface of the positioning plate 6, and limiting plates are fixedly mounted on both ends of the roller 11, and the diameter of the limiting plate is larger than the diameter of the mounting groove.

[0023] During use, personnel connect the servo motor 85 to the power supply, and its output end will drive the reciprocating screw rod 84 to rotate. When the reciprocating screw rod 84 rotates, the reciprocating screw rod 84 will drive the telescopic plate 82 to move up and down through the arc plate 83. When the telescopic plate 82 moves up and down, the telescopic plate 82 will slide inside the support seat 81, and the telescopic plate 82 will drive the connecting rod 5 to move up and down. When the connecting rod 5 moves, it will drive the roller 11 to move up and down. The roller 11 will support the protective film, and when the roller 11 is damaged, the personnel will place the roller 11 inside the positioning plate 6, and then the personnel will rotate the positive and negative threaded rods 73 through the positioning plate 6. When the positive and negative threaded rods 73 rotate, the positive and negative threaded rods 73 will drive the moving plate 72 to slide inside the positioning plate 6. When the positioning block 71 moves, it will drive the positioning block 71 to move to the middle, and the positioning block 71 will clamp the roller 11.

[0024] like Figures 1 to 4 As shown, the positioning assembly 7 includes sliding grooves on both sides of the surface of the positioning plate 6, and a positioning block 71 is slidably connected inside the sliding groove. A movable plate 72 is fixedly installed on the surface of the positioning block 71. A through groove is opened on the surface of the movable plate 72, and a positive and negative threaded rod 73 is penetrated by the internal thread of the through groove. A control plate 74 is fixedly installed on one end of the positive and negative threaded rod 73.

[0025] During use, personnel place the roller 11 inside the positioning plate 6, and then rotate the forward and reverse threaded rods 73 through the positioning plate 6. When the forward and reverse threaded rods 73 rotate, the positioning block 71 will be rotated through the moving plate 72. When the positioning block 71 moves, the roller 11 will be installed and disassembled through the positioning plate 6.

[0026] like Figures 1 to 4 As shown, the adjustment assembly 8 includes a support seat 81 fixedly mounted on both sides of the surface of the mounting plate 1, a slide groove is provided on the surface of the support seat 81, a telescopic plate 82 is slidably connected inside the slide groove, an arc plate 83 is fixedly mounted on one side of the surface of the telescopic plate 82, a thread groove is provided on the surface of the arc plate 83, a reciprocating screw 84 is penetrated by the internal thread of the thread groove, and a servo motor 85 is fixedly mounted on the bottom of the reciprocating screw 84.

[0027] During use, the personnel connect the servo motor 85 to the power supply, and its output end will drive the reciprocating screw 84 to rotate. When the reciprocating screw 84 rotates, the telescopic plate 82 will be driven to slide inside the support seat 81 through the arc plate 83, and the telescopic plate 82 will adjust the connecting rod 5 to different angles. During the adjustment process, the roller 11 will adjust the protective film to different tensions, which makes it convenient for personnel to adjust the tension.

[0028] The working principle and use process of the utility model: during use, the personnel connects the servo motor 85 to the power supply, and its output end will drive the reciprocating screw rod 84 to rotate. When the reciprocating screw rod 84 rotates, the reciprocating screw rod 84 will drive the telescopic plate 82 to move up and down through the arc plate 83. When the telescopic plate 82 moves up and down, the telescopic plate 82 will slide inside the support seat 81, and the telescopic plate 82 will drive the connecting rod 5 to move up and down. When the connecting rod 5 moves, it will drive the roller 11 to move up and down, and the roller 11 will support the protective film. When the roller 11 is damaged, the personnel will place the roller 11 inside the positioning plate 6, and then the personnel will rotate the positive and negative threaded rods 73 through the positioning plate 6. When the positive and negative threaded rods 73 rotate, the positive and negative threaded rods 73 will drive the moving plate 72 to slide inside the positioning plate 6. When the positioning block 71 moves, it will drive the positioning block 71 to move to the middle, and the positioning block 71 will clamp the roller 11.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tension adjustment device for a film blowing machine for producing plastic protective film, comprising a mounting plate (1), characterized in that: A mounting frame (2) is fixedly mounted on the surface of the mounting plate (1), a film blowing machine (3) is fixedly mounted inside the mounting frame (2), a mounting frame (4) is provided inside the film blowing machine (3), connecting rods (5) are rotatably connected to both sides of the surface of the mounting frame (2), a positioning plate (6) is fixedly mounted on one end of the connecting rod (5), a mounting groove is provided on the surface of the positioning plate (6), a positioning component (7) is provided inside the mounting groove, and an adjustment component (8) is provided on one side of the surface of the connecting rod (5).

2. The tension adjustment device for a film blowing machine for producing a plastic protective film according to claim 1, characterized in that: A protective cover (9) is fixedly mounted on one side of the surface of the mounting plate (1), a discharge frame (10) is fixedly mounted on the surface of the protective cover (9), and a guide groove is provided on the surface of the discharge frame (10).

3. The tension adjustment device for a film blowing machine for producing a plastic protective film according to claim 1, characterized in that: The positioning assembly (7) comprises a positioning plate (6) having sliding grooves on both sides of its surface, a positioning block (71) being slidably connected inside the sliding groove, a movable plate (72) being fixedly mounted on the surface of the positioning block (71), a through groove being formed on the surface of the movable plate (72), a positive and negative threaded rod (73) being penetrated through the internal thread of the through groove, and a control plate (74) being fixedly mounted on one end of the positive and negative threaded rod (73).

4. The tension adjustment device for a film blowing machine for producing a plastic protective film according to claim 1, characterized in that: A roller (11) is arranged inside the installation groove formed on the surface of the positioning plate (6), and limiting plates are fixedly mounted on both ends of the roller (11), wherein the diameter of the limiting plates is greater than the diameter of the installation groove.

5. The tension adjustment device for a film blowing machine for producing a plastic protective film according to claim 1, characterized in that: The adjustment assembly (8) comprises a support seat (81) fixedly mounted on both sides of the surface of the mounting plate (1); a slide groove is provided on the surface of the support seat (81); a telescopic plate (82) is slidably connected inside the slide groove; an arc plate (83) is fixedly mounted on one side of the surface of the telescopic plate (82); a thread groove is provided on the surface of the arc plate (83); a reciprocating screw rod (84) is penetrated by the internal thread of the thread groove; a servo motor (85) is fixedly mounted at the bottom of the reciprocating screw rod (84).

6. The tension adjustment device for a film blowing machine for producing a plastic protective film according to claim 1, characterized in that: A support plate is fixedly mounted in the middle of the surface of the connecting rod (5), a rotating rod is rotatably connected between the support plates, and an anti-slip pad is provided on the surface of the rotating rod.

7. The tension adjustment device for a film blowing machine for producing a plastic protective film according to claim 1, characterized in that: A stabilizing block is fixedly mounted on the back of the mounting frame (2), and the bottom of the stabilizing block is fixedly connected to one side of the surface of the mounting plate (1).

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