Tension balancing device for medical packaging composite film

Abstract

The utility model discloses a medical packaging composite film tension balancing device which comprises machine frame vertical plates, a lower roller shaft and an upper pressing roller are arranged between the machine frame vertical plates on the two sides in a rotating mode, adjusting mechanisms are arranged at the two ends of the upper pressing roller, and the adjusting mechanisms control the upper pressing roller to move front and back and / or move up and down relative to the lower roller shaft. Therefore, the film winding tension is adjusted. The tension balancing device for the medical packaging composite film can be placed between an unwinding device and a tension bracket, and the tension balancing system can independently control the tension of each layer of film and perform traction adjustment according to process parameters. The tension balance adjusting device on each side is provided with two motors, and the tension can be adjusted up and down and back and forth according to a control system. And therefore, the pressure applied to the lower roller shaft by the upper pressing roller is changed, the clamping force adjustment on the packaging film is changed, and the tension of the packaging film during winding or unwinding is changed.

Description

Technical Field

[0001] The utility model relates to the field of packaging film production equipment, in particular to a tension balancing device for medical packaging composite films. Background Art

[0002] At present, the multi-layer composite film used for food and medicine packaging generally adopts multiple unloading devices. Each unloading device is pulled together after passing through the tension frame. Due to the different tensile properties of the inner and outer films (the inner film is thinner), the inner film is more easily stretched and deformed during pulling than the outer film, and wrinkles will exist after lamination.

[0003] Especially in composite bag making, after longitudinal and transverse sealing, the inner film shrinks more than the outer film, and wrinkles will appear on the bag, making it difficult to ensure the heat sealing strength, resulting in problems such as leakage.

[0004] In addition, due to the requirements of the composite film production process and the limited working space of the components of the production equipment, there are not only inconveniences in human operation, but also great safety risks.

[0005] In order to solve the above problems, the present invention provides a medical packaging composite film tension control device, which can arbitrarily adjust the tension of each original film layer of the composite film within a certain range. Utility Model Content

[0006] The purpose of the utility model is to solve the above technical problems and provide a tension balancing device for medical packaging composite film.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tension balancing device for medical packaging composite film, including a frame upright plate, a lower roller shaft and an upper pressure roller are rotatably provided between the frame upright plates on both sides, and adjustment mechanisms are provided at both ends of the upper pressure roller. The adjustment mechanism controls the upper pressure roller to move forward and backward and / or up and down relative to the lower roller shaft to adjust the tension of the film winding.

[0008] Furthermore, the adjustment mechanism includes a front-to-back moving part and an up-and-down moving part, the front-to-back moving part is arranged on the frame vertical plate, and the up-and-down moving part is arranged on the front-to-back moving part, and the front-to-back moving part and the up-and-down moving part can control the movement of the upper pressure roller independently or together.

[0009] Furthermore, the front-to-back moving part includes a transverse screw rod, a bearing fixing seat is provided on the frame vertical plate, two transverse screw rods are provided in parallel, the two ends of the transverse screw rod are respectively rotatably connected to the bearing fixing seat, a first screw rod slider is screwed on the transverse screw rod, and a first slide plate is provided on the two first screw rod sliders, and the first slide plate slides in the horizontal direction.

[0010] Furthermore, a first servo motor is provided on the frame vertical plate, two driving pulleys are provided at the output end of the first servo motor, and driven pulleys are provided at the ends of the two transverse screw rods respectively. A transmission belt is sleeved between the driving pulley and the driven pulley, and the driving pulley is located in the middle position of the two driven pulleys.

[0011] Furthermore, the up and down moving part is arranged on a first slide plate, which includes a longitudinal screw rod. One side end surface of the first slide plate is provided with a bearing fixing seat in a pair. Both ends of the longitudinal screw rod are rotatably connected in the bearing fixing seat. A second slide plate is slidably connected to the first slide plate. The second slide plate slides in a vertical direction. A second screw rod slider is provided on the second slide plate. The second screw rod slider is screwed on the longitudinal screw rod. A second servo motor that drives the longitudinal screw rod to rotate is provided on the first slide plate.

[0012] Furthermore, a mounting ear seat is provided on one end surface of the second slide plate, a first through hole for the mounting ear seat to pass through is provided on the first slide plate, and a second through hole for the upper pressure roller to pass through is provided on the frame vertical plate.

[0013] Furthermore, a cross-axis structure is provided in the mounting ear seat, and the cross-axis structure includes an outer axis frame and an inner axis frame. Both ends of the outer axis frame are provided with a first axis rod hinged to the mounting ear seat, and an axis hole is provided in a direction perpendicular to the first axis rod; both ends of the inner axis frame are provided with a second axis rod, the second axis rod is rotatably connected in the axis hole, and the end of the upper pressure roller is rotatably connected in the inner axis frame.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the tension balancing device of the medical packaging composite film of the device can be placed between the unwinding device and the tension frame, and the tension balancing system can control the tension of each layer of film individually, and adjust the traction according to the process parameters. Each side of the tension balancing adjustment device has two motors, and the tension can be adjusted up and down, front and back according to the control system. Thereby changing the pressure applied by the upper pressure roller on the lower roller shaft, thereby changing the clamping force adjustment for the packaging film, and then changing the tension of the packaging film when winding or unwinding. In addition, this medical packaging composite film tension balancing device can also be placed between the tension frame and the winding device to ensure the winding quality and greatly reduce the probability of apparent quality problems such as ribs, ruffles, and uneven end faces.

[0015] This medical packaging composite film tension balancing device can independently pull each layer of the multi-layer composite film, and accurately control the tension of each layer of the film through the control system, so that the inner and outer films can be pulled together according to the process parameters, ensuring the uniformity and flatness of the tensile deformation of the inner and outer multi-layer films. At the same time, it can also ensure the apparent quality of the winding after compounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic structural diagram of a tension balancing device for medical packaging composite film according to the utility model;

[0017] Figure 2 This is an explosion-proof device for balancing the tension of a composite film for medical packaging. Figure 1 ;

[0018] Figure 3 This is an explosion-proof device for balancing the tension of a composite film for medical packaging. Figure 2 ;

[0019] In the figure: 1, frame vertical plate; 2, lower roller; 3, upper pressure roller; 4, adjustment mechanism; 5, front and rear moving part; 6, up and down moving part; 7, transverse screw rod; 8, bearing fixing seat; 9, first screw rod slider; 10, first slide plate; 11, first servo motor; 12, driving pulley; 13, driven pulley; 14, transmission belt; 15, longitudinal screw rod; 16, second slide plate; 17, second screw rod slider; 18, second servo motor; 19, mounting ear seat; 20, first through hole; 21, second through hole; 22, cross shaft structure; 23, outer shaft frame; 24, inner shaft frame; 25, first shaft rod; 26, shaft hole; 27, second shaft rod. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] A medical packaging composite film tension balancing device, such as Figure 1-3 As shown, it includes a frame upright plate 1, and a lower roller shaft 2 and an upper pressure roller 3 are rotatably provided between the frame upright plates 1 on both sides. In the previous use process, the packaging film is passed between the upper pressure roller 3 and the lower pressure roller. The lower pressure roller rotates on the frame upright plate 1, and the upper pressure roller 3 has only one degree of freedom to slide, and cooperates with the action of the spring. It is pressed against the lower roller shaft 2 by the spring under the guidance of the fixed degree of freedom. In this way, it is not convenient to adjust the tension of the packaging film.

[0022] The device is provided with an adjustment mechanism 4 at both ends of the upper pressure roller 3, and the adjustment mechanism 4 controls the upper pressure roller 3 to move forward and backward and / or up and down relative to the lower roller shaft 2 to adjust the tension of the film winding. It can be understood that, in the present embodiment, the adjustment mechanism 4 includes a forward and backward moving part 5 and an up and down moving part 6, and the forward and backward moving part 5 is arranged on the frame vertical plate 1, and the up and down moving part 6 is arranged on the forward and backward moving part 5. The forward and backward moving part 5 and the up and down moving part 6 can control the movement of the upper pressure roller 3 independently or jointly, that is, the upper pressure roller 3 can be controlled to move in the forward and backward direction or in the up and down direction in the vertical direction at the same time through the adjustment mechanisms 4 on both sides; the forward and backward movement and the up and down movement can also be carried out simultaneously to expand the adjustment range of the upper pressure roller 3, thereby changing the clamping force formed by the two rollers on the packaging film, and then the tension of the film can be adjusted.

[0023] Specifically, the forward and backward moving part 5 includes a transverse screw rod 7, a bearing fixing seat 8 is provided on the frame vertical plate 1, two transverse screw rods 7 are provided in parallel, and the two ends of the transverse screw rod 7 are respectively rotatably connected to the bearing fixing seat 8, and a first screw rod slider 9 is screwed on the transverse screw rod 7, and a first slide plate 10 is provided on the two first screw rod sliders 9, and the first slide plate 10 slides and moves in the horizontal direction. The two first screw rod sliders 9 rotate synchronously, thereby driving the two first screw rod sliders 9 to move in the same direction, thereby controlling the first slide plate 10 to slide forward and backward in the horizontal direction, that is, controlling the upper pressure roller 3 to move forward and backward relative to the lower roller shaft 2. Further, the frame vertical plate 1 is provided with a first servo motor 11, and the output end of the first servo motor is provided with two driving pulleys 12, and the ends of the two transverse screw rods 7 are respectively provided with driven pulleys 13, and a transmission belt 14 is sleeved between the driving pulley 12 and the driven pulley 13, and the driving pulley 12 is located in the middle of the two driven pulleys 13. The first screw rods on both sides can be controlled to rotate precisely and synchronously by the first servo motor 11 and the two pairs of transmission belts 14 .

[0024] Further, the up-and-down moving part 6 is arranged on the first slide 10, which includes a longitudinal screw rod 15, one side end surface of the first slide 10 is provided with a bearing fixing seat 8 in pairs, and the two ends of the longitudinal screw rod 15 are rotatably connected in the bearing fixing seat 8, and the first slide 10 is slidably connected with a second slide 16, and the second slide 16 slides and moves in the vertical direction. Specifically, as Figure 1 , 2As shown, vertical waist holes are respectively provided on both sides of the first slide plate 10, and a slide bar is provided on the first slide plate 10, which passes through the outer side of the waist hole and is fixedly connected to the first slide plate 10, and four groups are symmetrically provided, so that the second slide plate 16 can be controlled to slide and move in the vertical direction relative to the first slide plate 10. A second screw slider 17 is provided on the second slide plate 16, and the second screw slider 17 is screwed on the longitudinal screw rod 15, and a second servo motor 18 is provided on the first slide plate 10 to drive the longitudinal screw rod 15 to rotate. The second servo motor is used to drive the second slide plate 16 to accurately control the vertical movement, thereby controlling the up and down movement of the upper pressure roller 3.

[0025] Furthermore, a mounting ear seat 19 is provided on one end face of the second slide plate 16, a first through hole 20 is provided on the first slide plate 10 for the mounting ear seat 19 to pass through, and a second through hole 21 is provided on the frame vertical plate 1 for the upper pressure roller 3 to pass through. In actual use, both ends of the upper pressure roller 3 are connected to the cross-axis structure 22 through the second through hole 21 and the first through hole 20. Specifically, a cross-axis structure 22 is provided inside the mounting ear seat 19, and the cross-axis structure 22 includes an outer axis frame 23 and an inner axis frame 24. Both ends of the outer axis frame 23 are provided with a first shaft rod 25 hinged to the mounting ear seat 19, and an axis hole 26 is provided in a direction perpendicular to the first shaft rod 25; both ends of the inner axis frame 24 are provided with a second shaft rod 27, and the second shaft rod 27 is rotatably connected in the axis hole 26, and the end of the upper pressure roller 3 is rotatably connected in the inner axis frame 24. By setting the cross-axis structure 22 , when asymmetric adjustment is performed at both ends of the upper pressing roller 3 , the cross-axis structure 22 can be used for compensation, so that the upper pressing roller 3 can run stably.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tension balancing device for medical packaging composite film, comprising a frame upright plate (1), a lower roller (2) and an upper pressure roller (3) rotatably arranged between the frame upright plates (1) on both sides, characterized in that: Both ends of the upper pressing roller (3) are provided with adjustment mechanisms (4), and the adjustment mechanisms (4) control the upper pressing roller (3) to move forward and backward and / or up and down relative to the lower roller shaft (2) to adjust the tension of the film winding.

2. A medical packaging composite film tension balancing device according to claim 1, characterized in that: The adjustment mechanism (4) comprises a front-to-back moving part (5) and an up-and-down moving part (6); the front-to-back moving part (5) is arranged on the frame vertical plate (1); the up-and-down moving part (6) is arranged on the front-to-back moving part (5); the front-to-back moving part (5) and the up-and-down moving part (6) can control the movement of the upper pressure roller (3) independently of each other or in combination.

3. A medical packaging composite film tension balancing device according to claim 2, characterized in that: The front-rear moving part (5) comprises a transverse screw rod (7), a bearing fixing seat (8) is provided on the frame vertical plate (1), two transverse screw rods (7) are provided in parallel, the two ends of the transverse screw rod (7) are respectively rotatably connected to the bearing fixing seat (8), a first screw rod slider (9) is screwed on the transverse screw rod (7), and a first slide plate (10) is provided on the two first screw rod sliders (9), and the first slide plate (10) slides in a horizontal direction.

4. A medical packaging composite film tension balancing device according to claim 3, characterized in that: A first servo motor (11) is provided on the frame upright plate (1), two driving pulleys (12) are provided at the output end of the first servo motor, driven pulleys (13) are provided at the ends of the two transverse screw rods (7), a transmission belt (14) is sleeved between the driving pulley (12) and the driven pulley (13), and the driving pulley (12) is located in the middle of the two driven pulleys (13).

5. A medical packaging composite film tension balancing device according to claim 2, characterized in that: The up-and-down moving part (6) is arranged on the first slide plate (10), and comprises a longitudinal screw rod (15). One side end surface of the first slide plate (10) is provided with a bearing fixing seat (8) in a pair. Both ends of the longitudinal screw rod (15) are rotatably connected in the bearing fixing seat (8). The first slide plate (10) is slidably connected with a second slide plate (16). The second slide plate (16) slides in a vertical direction. The second slide plate (16) is provided with a second screw rod slider (17). The second screw rod slider (17) is screwed on the longitudinal screw rod (15). The first slide plate (10) is provided with a second servo motor (18) for driving the longitudinal screw rod (15) to rotate.

6. A medical packaging composite film tension balancing device according to claim 5, characterized in that: A mounting ear seat (19) is provided on one end surface of the second slide plate (16), a first through hole (20) for the mounting ear seat (19) to pass through is provided on the first slide plate (10), and a second through hole (21) for the upper pressure roller (3) to pass through is provided on the frame vertical plate (1).

7. A medical packaging composite film tension balancing device according to claim 6, characterized in that: A cross-axis structure (22) is provided inside the mounting ear seat (19), and the cross-axis structure (22) comprises an outer axis frame (23) and an inner axis frame (24); first axis rods (25) hinged to the mounting ear seat (19) are provided at both ends of the outer axis frame (23), and an axis hole (26) is provided in a direction perpendicular to the first axis rod (25); second axis rods (27) are provided at both ends of the inner axis frame (24), and the second axis rod (27) is rotatably connected in the axis hole (26); and the end of the upper pressure roller (3) is rotatably connected in the inner axis frame (24).

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