Tensioning device for protective film

Abstract

The utility model discloses a tensioning device for a protective film, which relates to the field of protective film production and comprises a box frame, a motor frame is fixedly connected to the top of one side of the box frame, a fixing block is fixedly connected to the top of the other side of the box frame, a guide mechanism is arranged on one side of the box frame, and a lifting mechanism is arranged on the other side of the box frame. A power mechanism is arranged in the box frame, a limiting roller mechanism is arranged in the box frame, a connecting mechanism is arranged on the limiting roller mechanism, the limiting roller mechanism comprises symmetrical movable bent pipes, the movable bent pipes are rotationally connected to the two sides in the box frame, connecting blocks are fixedly connected to the bent positions of the two sides of each movable roller, and springs are fixedly connected to the upper portions and the lower portions of the connecting blocks. The ends, close to each other, of the movable bent pipes on the two sides are rotationally connected with movable rollers. The device has the beneficial effects that the driving roller is matched with the driven roller, so that a protective film passes through the inner side and is prevented from being folded, and the second motor is matched with the movable roller to tension the protective film according to different requirements.

Description

Technical Field

[0001] The utility model relates to the field of protective film production, in particular to a tensioning device for protective films. Background Art

[0002] The function of the protective film is to put a layer of film on the physical object we want to protect. In order to ensure the production quality, the production process will undergo a tensioning operation to make the protective film smoother.

[0003] After searching, the Chinese patent announcement number is CN220811241U, which discloses a tensioning device for protective film. The patent allows the staff to adjust the height of the mirror steel roller body and the rubber roller body according to the need of tensioning the protective film to adjust the tension of the protective film and ensure the flatness of the protective film during the winding process. There are certain problems with this device: it only adjusts the height of the mirror steel roller body and the rubber roller body to ensure the flatness of the protective film, which is too single, and no limiting roller is added before winding. Utility Model Content

[0004] The purpose of the utility model is to provide a tensioning device for a protective film in order to solve the above-mentioned problem.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A tensioning device for a protective film comprises a box frame, wherein both sides of the box frame are provided with lifting grooves, the top of one side of the box frame is fixedly connected to a motor frame, the top of the other side of the box frame is fixedly connected to a fixing block, both sides of the bottom of the box frame are fixedly connected to fixing plates, a guide mechanism is provided on one side of the box frame, a lifting mechanism is provided on the other side of the box frame, a power mechanism is provided in the box frame, a limiting roller mechanism is provided in the box frame, a connecting mechanism is provided on the limiting roller mechanism, the limiting roller mechanism comprises symmetrical movable bent pipes, the movable bent pipes are rotatably connected to both sides of the box frame, connecting blocks are fixedly connected to the bending parts of both sides of the movable bent pipes, springs are fixedly connected to the upper and lower sides of the connecting blocks, and the ends of the movable bent pipes on both sides close to each other are rotatably connected to movable rollers.

[0007] Preferably, the connecting mechanism includes a connecting plate, which is fixedly connected to one end of the spring away from the connecting block, and the end of the connecting plate away from the spring is fixedly connected to a lifting ring, and the fixed block and the bottom of the motor frame are both fixedly connected to a lifting hook, and the lifting hook is located above the connecting plate.

[0008] Preferably, the power mechanism includes a sliding block, which is slidably connected to the lifting slot, a third motor is fixedly connected to one side of the sliding block, the third motor is located outside the box frame, the output shaft of the third motor is fixedly connected to a driving roller, the driving roller is fixedly connected to a driving gear, the driving gear is meshed with a driven gear, and the driven gear is fixedly connected to the driven roller.

[0009] Preferably, the guide mechanism comprises a guide roller, which is rotatably connected to the inner side of the box frame, and a synchronous roller is rotatably connected inside the box frame, and the guide roller is located obliquely above the front side of the synchronous roller.

[0010] Preferably, the lifting mechanism includes a second motor, the second motor is fixedly connected to the top of the motor frame, the output shaft of the second motor is fixedly connected to a screw rod, the screw rod is threadedly connected to a lifting block, and the lifting block is slidably connected in a lifting slot on one side.

[0011] Preferably, a fixing hook is fixedly connected to the top of the fixing plate, and the fixing hook is located below the connecting block.

[0012] The beneficial effect is that the third motor drives the active roller to rotate counterclockwise, the active roller drives the active gear to rotate, the active gear engages with the driven gear to rotate, and the driven roller rotates clockwise, the active roller and the driven roller cooperate to make the protective film pass from the inside to prevent the protective film from folding, and the second motor cooperates with the active roller to perform tensioning operations on the protective film with different requirements.

[0013] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0015] Figure 1 It is a three-dimensional diagram of a tensioning device for a protective film according to the utility model;

[0016] Figure 2 It is a rear view of a tensioning device for a protective film according to the utility model;

[0017] Figure 3 It is an enlarged view of a part of the mechanism of a tensioning device for a protective film according to the utility model;

[0018] Figure 4 It is a rear perspective view of a tensioning device for a protective film according to the utility model;

[0019] Figure 5 It is an enlarged view of point A of a tensioning device for a protective film described in the utility model.

[0020] The description of the accompanying drawings is as follows: 101, box frame; 102, lifting slot; 103, motor frame; 104, fixed block; 105, fixed plate; 2, guide mechanism; 201, guide roller; 202, synchronous roller; 3, lifting mechanism; 301, second motor; 302, screw rod; 303, lifting block; 4, power mechanism; 401, sliding block; 402, third motor; 403, active roller; 404, active gear; 405, driven gear; 406, driven roller; 5, limiting roller mechanism; 501, movable elbow; 502, connecting block; 503, spring; 504, movable roller; 6, connecting mechanism; 601, hook; 602, connecting plate; 603, lifting ring; 7, fixed hook. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] like Figure 1-Figure 5 As shown, a tensioning device for a protective film comprises a box frame 101, both sides of the box frame 101 are provided with lifting grooves 102, a motor frame 103 is welded to the top of one side of the box frame 101, a fixing block 104 is welded to the top of the other side of the box frame 101, both sides of the bottom of the box frame 101 are connected with fixing plates 105 by bolts, a guide mechanism 2 is arranged on one side of the box frame 101, a lifting mechanism 3 is arranged on the other side of the box frame 101, a power mechanism 4 is arranged in the box frame 101, a limiting roller mechanism 5 is arranged in the box frame 101, a connecting mechanism 6 is arranged on the limiting roller mechanism 5, the limiting roller mechanism 5 comprises a movable bent pipe 501, the movable bent pipe 501 is rotatably connected to the inner side of the box frame 101, connecting blocks 502 are connected to the bending parts of the movable bent pipe 501 on both sides by screws, springs 503 are welded to the upper and lower sides of the connecting block 502, and the ends of the movable bent pipes 501 on both sides close to each other are rotatably connected to movable rollers 504.

[0025] The connecting mechanism 6 includes a connecting plate 602, which is welded to the end of the spring 503 away from the connecting block 502. The end of the connecting plate 602 away from the spring 503 is connected to a lifting ring 603 by screws. The fixing block 104 and the bottom of the motor frame 103 are both welded with a lifting hook 601, and the lifting hook 601 is located above the connecting plate 602. The protective film passes through the movable roller 504 to connect the lifting ring 603 with the lifting hook 601 to limit the protective film.

[0026] The power mechanism 4 includes a sliding block 401, which is slidably connected to the lifting groove 102. A third motor 402 is connected to one side of the sliding block 401 by bolts. The third motor 402 is located outside the box frame 101. The output shaft of the third motor 402 is connected to an active roller 403 through a coupling. The active roller 403 is connected to a driving gear 404 through a key. The driving gear 404 is meshed with a driven gear 405. The driven gear 405 is connected to a driven roller 406 through a key. The second motor 301 drives the screw rod 302 to rotate, so that the lifting block 303 slides in the lifting groove 102. The third motor 402 drives the active roller 403 to rotate counterclockwise, and the active roller 403 drives the active gear 404 to rotate. The active gear 404 meshes with the driven gear 405 to rotate, so that the driven roller 406 rotates clockwise. The active roller 403 and the driven roller 406 cooperate to allow the protective film to pass from the inside to prevent the protective film from folding.

[0027] The guide mechanism 2 includes a guide roller 201 rotatably connected to the inner side of the box frame 101 , a synchronous roller 202 is rotatably connected inside the box frame 101 , and the guide roller 201 is located obliquely above and in front of the synchronous roller 202 .

[0028] The lifting mechanism 3 includes a second motor 301, which is connected to the top of the motor frame 103 by bolts. The output shaft of the second motor 301 is connected to the screw rod 302 through a coupling. The screw rod 302 is threadedly connected to the lifting block 303. The lifting block 303 is slidably connected in the lifting groove 102 on one side. The second motor 301 cooperates with the movable roller 504 to perform tensioning operations on the protective film according to different requirements.

[0029] A fixing hook 7 is welded on the top of the fixing plate 105 , and the fixing hook 7 is located below the connecting block 502 .

[0030] Working principle: During operation, one end of the protective film is first passed through the top of the guide roller 201 and the bottom of the synchronous roller 202, and then passes between the active roller 403 and the driven roller 406. The second motor 301 drives the screw rod 302 to rotate, so that the lifting block 303 slides in the lifting slot 102. The third motor 402 drives the active roller 403 to rotate counterclockwise, and the active roller 403 drives the active gear 404 to rotate. The active gear 404 engages with the driven gear 405 to rotate, so that the driven roller 406 rotates clockwise. The active roller 403 and the driven roller 406 cooperate to make the protective film pass from the inside to prevent the protective film from folding. Then the protective film passes through the movable roller 504, and the lifting ring 603 is connected with the hook 601 to limit the protective film. A fixed hook 7 is provided below the connecting block 502, and the lower hook 601 is connected to the fixed hook 7. The second motor 301 cooperates with the movable roller 504 to perform tensioning operations on the protective film according to different requirements.

[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may 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 tensioning device for a protective film, comprising a box frame (101), both sides of the box frame (101) are provided with lifting grooves (102), a motor frame (103) is fixedly connected to the top of one side of the box frame (101), a fixing block (104) is fixedly connected to the top of the other side of the box frame (101), and both sides of the bottom of the box frame (101) are fixedly connected to fixing plates (105), characterized in that: A guide mechanism (2) is provided on one side of the box frame (101), a lifting mechanism (3) is provided on the other side of the box frame (101), a power mechanism (4) is provided inside the box frame (101), a limit roller mechanism (5) is provided inside the box frame (101), a connection mechanism (6) is provided on the limit roller mechanism (5), the limit roller mechanism (5) comprises symmetrical movable curved pipes (501), the movable curved pipes (501) are rotatably connected to two sides of the box frame (101), connecting blocks (502) are fixedly connected at the bending parts on both sides of the movable curved pipe (501), the upper and lower ends of the connecting blocks (502) are fixedly connected to springs (503), and the ends of the movable curved pipes (501) on both sides close to each other are rotatably connected to movable rollers (504).

2. A protective film tensioning device according to claim 1, characterized in that: The connecting mechanism (6) comprises a connecting plate (602), wherein the connecting plate (602) is fixedly connected to one end of the spring (503) away from the connecting block (502), and one end of the connecting plate (602) away from the spring (503) is fixedly connected to a lifting ring (603), and the bottom of the fixing block (104) and the motor frame (103) are both fixedly connected to a lifting hook (601), and the lifting hook (601) is located above the connecting plate (602).

3. A protective film tensioning device according to claim 1, characterized in that: The power mechanism (4) comprises a sliding block (401), the sliding block (401) is slidably connected to the lifting slot (102), a third motor (402) is fixedly connected to one side of the sliding block (401), the third motor (402) is located outside the box frame (101), the output shaft of the third motor (402) is fixedly connected to a driving roller (403), the driving roller (403) is fixedly connected to a driving gear (404), the driving gear (404) is meshed with a driven gear (405), and the driven gear (405) is fixedly connected to a driven roller (406).

4. A protective film tensioning device according to claim 1, characterized in that: The guide mechanism (2) comprises a guide roller (201), wherein the guide roller (201) is rotatably connected to the inner side of the box frame (101), a synchronous roller (202) is rotatably connected inside the box frame (101), and the guide roller (201) is located obliquely above the front side of the synchronous roller (202).

5. A protective film tensioning device according to claim 1, characterized in that: The lifting mechanism (3) comprises a second motor (301), the second motor (301) is fixedly connected to the top of the motor frame (103), the output shaft of the second motor (301) is fixedly connected to a screw rod (302), the screw rod (302) is threadedly connected to a lifting block (303), and the lifting block (303) is slidably connected in the lifting slot (102) on one side.

6. A protective film tensioning device according to claim 1, characterized in that: A fixing hook (7) is fixedly connected to the top of the fixing plate (105), and the fixing hook (7) is located below the connecting block (502).

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