Upward bending device for aluminum-foil paper

Abstract

The invention relates to an upward bending device for aluminum-foil paper. A bending correction device is used for conducting upward bending correction on the edges of the two sides, in the width direction, of the aluminum-foil paper between two conveying rollers. The correcting device comprises a first correcting piece, a second correcting piece, a driving piece, a transmission piece, a support and a detecting element. The first correcting piece and the second correcting piece are oppositely installed on the support in a spaced mode, a space for aluminum-foil paper to pass through is formed between the first correcting piece and the second correcting piece, and the opposite sides can act on the edges of the two sides of the width of the aluminum-foil paper to conduct bending correction. The driving part is used for driving the first correcting part and the second correcting part to be close to or far away from each other through the transmission part so as to correct the edges of the aluminum-foil paper with different bending degrees; the driving piece is mounted on the bracket; the detection element is connected to the driving part and used for detecting the height of the two sides of the aluminum-foil paper processed into the cigarette packet so as to drive the driving part to act. The correction device can adapt to correction of aluminum-foil paper with different bending degrees.

Description

Technical Field

[0001] This invention relates to the field of aluminum foil packaging equipment technology, and more particularly to an upward bending device for aluminum foil. Background Technology

[0002] Aluminum foil is a common packaging paper, used in cigarette packaging and food packaging. On large-scale production lines, aluminum foil often bends downwards during operation. This bending can cause problems in subsequent production processes, such as difficulty controlling the edges of the bent foil, which affects normal operation; it can also severely impact equipment efficiency or compromise quality during packaging, ultimately affecting product quality. These issues urgently need to be addressed. Summary of the Invention

[0003] This invention discloses an upward bending device for aluminum foil, which aims to solve the technical problems existing in the prior art.

[0004] The present invention adopts the following technical solution:

[0005] This invention provides an upward bending device for aluminum foil. The bending correction device is used to bend and correct the edges of the aluminum foil on both sides of its width direction between two conveying rollers. It includes a first correction component, a second correction component, a driving component, a transmission component, a bracket, and a detection element. The first correction component and the second correction component are installed on the bracket at a distance from each other, forming a space between them for the aluminum foil to pass through. Their opposite sides can act on the edges of the aluminum foil on both sides of its width to perform bending correction. The driving component is used to drive the first correction component and the second correction component closer to each other or further away from each other through the transmission component to correct the edges of the aluminum foil with different degrees of bending. The driving component is installed on the bracket. The detection element is connected to the driving component and is used to detect the height of the two sides of the aluminum foil processed into cigarette packs, so as to adjust the distance between the first correction component and the second correction component according to the detection result.

[0006] In an upward bending device for aluminum foil according to the present invention, the first straightening member and the second straightening member are rotatably connected; the first straightening member includes a first segment connected end-to-end and located on one side of the rotatable connection position and a second segment on the other side; the second straightening member includes a third segment connected end-to-end and located on one side of the rotatable connection position and a fourth segment on the other side; the first segment and the third segment are used to straighten the edge of the aluminum foil and are outwardly convex arc-shaped protruding from the outer side; the second segment and the fourth segment are used to connect the transmission member so that the first segment and the third segment can perform opening and closing actions.

[0007] In an upward bending device for aluminum foil according to the present invention, the curvature of the first segment and the third segment decreases from the end to the side of the rotatable connection.

[0008] In an upward bending device for aluminum foil according to the present invention, the first straightening member and the second straightening member are rotatably connected, and the rotating shaft is movably mounted on the bracket near or away from the bottom surface of the aluminum foil; the transmission member includes a first gear, a second gear, a screw, and a slider; the first gear is connected to the rotating end of the driving member and meshes with the second gear for transmission; the second gear is rotatably mounted on the bracket; the screw is a screw with both positive and negative threads, and is coaxially mounted on the second gear and screwed to the slider; the sliders are arranged in pairs and are respectively rotatably connected to the ends of the first straightening member and the second straightening member.

[0009] In an upward bending device for aluminum foil according to the present invention, a support plate is further included; the support plate is disposed between the first straightening member and the second straightening member, and is used to support the bottom surface of the aluminum foil.

[0010] In an upward bending device for aluminum foil according to the present invention, a controller is further included; the controller is connected to the drive member and the detection element, and is used to receive the measurement value of the detection element and control the operation of the drive member according to the measurement value.

[0011] In an upward bending device for aluminum foil of the present invention, the detection element includes a first detection element and a second detection element; the first detection element and the second detection element are respectively electrically connected to the driving member, the first detection element is used to detect the height of one side of the aluminum foil processed into a cigarette pack; the second detection element is used to detect the height of the other side of the aluminum foil processed into a cigarette pack.

[0012] In an upward bending device for aluminum foil according to the present invention, the detection element is a distance sensor.

[0013] In an upward bending device for aluminum foil of the present invention, the driving component is a motor.

[0014] In an upward bending device for aluminum foil according to the present invention, the support can move in a direction perpendicular to the conveying direction of the aluminum foil.

[0015] The technical solution adopted in this invention can achieve the following beneficial effects:

[0016] This invention mainly provides an upward bending device for aluminum foil. Based on the detection element, the height of both sides of the aluminum foil packaged as a cigarette pack is detected. The drive component is controlled to operate according to the detection value. The drive component and the transmission component drive the first and second straightening components to move closer or further apart, so as to bend and straighten the downward curved edge of the aluminum foil upward. Since the first and second straightening components can move closer or further apart by the power generated by the drive component and the transmission component, spaces of different sizes can be formed between them to accommodate the straightening of aluminum foil with different degrees of curvature. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of the present invention. The illustrative embodiments of the present invention and their descriptions explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of an upward bending device for aluminum foil according to the present invention;

[0019] Figure 2 This is a schematic diagram of the main structure of an upward bending device for aluminum foil according to the present invention;

[0020] Figure 3 This is a schematic diagram of the connection structure between the cylinder and the second gear of the present invention;

[0021] Figure 4 This is a schematic diagram of the connection structure between the first screw segment, the second screw segment, and the second gear according to the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. First straightening component; 11. First segment; 12. Second segment; 2. Second straightening component; 21. Third segment; 22. Fourth segment; 3. Driving component; 4. Transmission component; 41. First gear; 42. Second gear; 43. Screw; 431. First screw segment; 432. Second screw segment; 44. Slider; 45. Cylinder; 5. Bracket; 6. Detection element; 61. First detection element; 62. Second detection element; 7. Support plate; 8. Slider rail assembly; 9. Controller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly indicated.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0026] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] To address the problems existing in the prior art, this application provides an upward bending device for aluminum foil.

[0028] like Figure 1 As shown, an upward bending device for aluminum foil includes a bending correction device for bending and correcting the aluminum foil A between two conveying rollers on both sides of its width towards the edges. The bending correction device includes a first correction element 1, a second correction element 2, a driving element 3, a transmission element 4, a bracket 5, and a detection element 6. The first correction element 1 and the second correction element 2 are installed on the bracket 5 at a distance from each other, forming a space between them for the aluminum foil to pass through. Their opposite sides can act on the edges of the aluminum foil on both sides of its width to perform bending correction. That is, when passing through the first correction element 1 and the second correction element 2, based on… When the distance between the first straightening element 1 and the second straightening element 2 is less than the width of the aluminum foil, the aluminum foil is bent upwards to correct the edge of the bent aluminum foil. The driving element 3 is used to drive the first straightening element 1 and the second straightening element 2 to move closer or further apart through the transmission element 4 to correct the edges of aluminum foil with different degrees of curvature. The driving element 3 is mounted on the bracket 5. The detection element 6 is connected to the driving element 3 and is used to detect the height of both sides of the aluminum foil A processed into a cigarette pack, so as to adjust the distance between the first straightening element and the second straightening element according to the detection result.

[0029] The present invention discloses an upward bending device for aluminum foil. Based on the detection element 6 detecting the height of both sides of the aluminum foil packaged as a cigarette pack, the device controls the drive component 3 to operate according to the detection value. The drive component 3 and the transmission component 4 drive the first straightening component 1 and the second straightening component 2 to move closer or further apart, thereby bending and correcting the downward-curved edge of the aluminum foil upward. Since the drive component 3 and the transmission component 4 generate power, the first straightening component 1 and the second straightening component 2 can move closer or further apart, thus forming spaces of different sizes between them to accommodate the correction of aluminum foil with different degrees of curvature. When they move closer together, it is suitable for cases with a large degree of curvature (i.e., the downward-curved part occupies a large proportion of the width of the aluminum foil, such as greater than or equal to 30%; otherwise, it is a case of a small degree of curvature), while when they move further apart, it is suitable for cases with a small degree of curvature.

[0030] In some preferred embodiments, such as Figure 1 and Figure 2 As shown, the first straightening component 1 and the second straightening component 2 are rotatably connected. The first straightening component 1 includes a first segment 11 connected end-to-end and located on one side of the rotatable connection position, and a second segment 12 on the other side. The second straightening component 2 includes a third segment 21 connected end-to-end and located on one side of the rotatable connection position, and a fourth segment 22 on the other side. The first segment 11 and the third segment 21 are used to straighten the edge of the aluminum foil and are outwardly convex arc-shaped, or in other words, the opposing surfaces of the first segment 11 and the third segment 21 are outwardly convex arc-shaped surfaces. The second segment 12 and the fourth segment 22 are used to connect the transmission component 4 so that the first segment 11 and the third segment 21 can perform opening and closing actions. By using arc-shaped segments to straighten the curved edge of the aluminum foil, new creases can be avoided during the straightening process.

[0031] Preferably, the curvature of the first segment 11 and the third segment 21 decreases from the end to the side of the rotatable connection; for example, when the first segment 11 and the third segment 21 are far apart from each other to the farthest position, they form a shape similar to an inverted trapezoid, and when the first segment 11 and the third segment 21 are close to each other to the closest position, they form a shape similar to a trapezoid; thus, when the first segment 11 and the third segment 21 are far apart from each other to the open position to correct the edge of the aluminum foil with a low degree of curvature, the degree of curvature correction of the aluminum foil edge is reduced, and overcorrection is avoided, while when the first segment 11 and the third segment 21 are close to each other to the closed position, not only is the edge controlled and corrected, but the interior far from the edge is also corrected, similar to rolling the aluminum foil into a cylindrical shape to correct the edge of the aluminum foil with a high degree of curvature, thereby increasing the degree of curvature correction of the aluminum foil edge, ensuring the correction effect, and the structure is simple.

[0032] Preferably, the first straightening member 1 and the second straightening member 2 are rotatably connected, and the rotating shaft is movably mounted on the bracket 5 towards or away from the bottom surface of the aluminum foil; the transmission member 4 includes a first gear 41, a second gear 42, a screw 43, and a slider 44; the first gear 41 is connected to the rotating end of the driving member 3 and meshes with the second gear 42 for transmission; the second gear 42 is rotatably mounted on the bracket 5; the screw 43 is a screw with both positive and negative threads, and is coaxially mounted on the second gear 42 and screwed to the slider 44; the sliders 44 are arranged in pairs and are rotatably connected to the bracket 5 respectively. The ends of the first straightening element 1 and the second straightening element 2; based on this, the first straightening element 1 and the second straightening element 2 can be driven to rotate simultaneously, ensuring that the degree of correction on both sides is consistent, and a continuous drive is formed by the cooperation of gears and screws, which can adapt to different degrees of curvature and improve applicability; furthermore, based on this, when the first straightening element 1 and the second straightening element 2 approach each other, the first segment 11 and the third segment 21 move toward the bottom surface of the aluminum foil, that is, they generate a force perpendicular to the bottom surface and upward on the aluminum foil, which can tighten the aluminum foil and thus improve the straightening effect.

[0033] In some preferred embodiments, a support plate 7 is also included; the support plate 7 is disposed between the first straightening member 1 and the second straightening member 2, and is used to support the bottom surface of the aluminum foil; the support plate 7 can control the bottom surface of the aluminum foil, prevent it from moving excessively and affecting the edge correction, thereby improving the edge correction effect.

[0034] Preferably, the support plate 7 has a notch for the top of the first corrector 1 and the second corrector 2 to extend out, and the bottom is connected to the transmission member 4.

[0035] In some preferred embodiments, the detection element 6 includes a first detection element 61 and a second detection element 62; the first detection element 61 and the second detection element 62 are respectively electrically connected to the drive member 3, the first detection element 61 is used to detect the height of one side of the aluminum foil paper processed into a cigarette pack; the second detection element 62 is used to detect the height of the other side of the aluminum foil paper processed into a cigarette pack.

[0036] More preferably, the driving member 3 can drive the first straightening member 1 or the second straightening member 2 to move independently through the transmission member 4 to straighten the downward bending edge of the aluminum foil on one side; at the same time, it can also drive the first straightening member 1 and the second straightening member 2 to move simultaneously; based on this, the edge bent on one side can be straightened, avoiding the impact on the unbent side when straightening both sides at the same time, causing it to bend upward; and the first straightening member 1 or the second straightening member 2 can move asymmetrically to perform inconsistent straightening when the degree of bending on both sides is inconsistent.

[0037] Specifically, the transmission component 4 includes a first gear 41, a second gear 42, a screw 43, and a slider 44; the first gear 41 is connected to the rotating end of the driving component 3 and meshes with the second gear 42 for transmission; the second gear 42 is rotatably mounted on the bracket 5; the screw 43 is a screw with both positive and negative threads, coaxially inserted through the second gear 42, and screwed to the slider 44; the sliders 44 are arranged in pairs and rotatably connected to the ends of the first straightening component 1 and the second straightening component 2, respectively; the screw 43 includes a first screw section 4. 31 and second screw section 432; one end of the first screw section 431 is screwed to one of the sliders 44, and the other end can be inserted into the second gear 42. One end of the second screw section 432 is screwed to another slider 44, and the other end can be inserted into the second gear 42. That is, by moving the second gear 42, it can be inserted into the first screw section 431 and / or the second screw section 432, thereby driving the first straightening member 1 and / or the second straightening member 2 to move, thereby achieving straightening. At this time, the insertion part is non-circular. Specifically, the movement of the second gear 42 can be achieved manually or automatically, for example, by driving the second gear 42 to move through a cylinder 45. The end of the cylinder 45 is set in an annular groove on the end face of the second gear 42, and can move within the groove but cannot disengage from the groove. Figure 3 .

[0038] Preferably, the detection element 6 can also be positioned behind the first straightener 1 and the second straightener 2 in the aluminum foil conveying direction to detect the degree of bending on both sides in the width direction of the aluminum foil.

[0039] Preferably, the detection element 6 is a distance sensor, such as a light sensor, a proximity switch, or a laser rangefinder. Other elements capable of distance detection can also be selected. Specifically, the detection end of the detection element 6 is perpendicular to the surface of the aluminum foil when it is not bent, to detect the degree of deviation from a flat surface. As an example, using a laser rangefinder, the distance measured by the detection element 6 when the aluminum foil edge is not bent is the first distance. Subsequent measurements are then compared with this first distance. If the value is greater than the first distance, it indicates insufficient correction, requiring adjustment to bring the first correction element 1 and the second correction element 2 closer together. If the value is less than the first distance, it indicates excessive correction, requiring adjustment of the first correction element 1 and the second correction element 2. When the two sides are far apart, the laser rangefinder should be able to detect the edge distance when the correction is inadequate or excessive. As an alternative, a light sensor or proximity switch can be selected. For example, two light sensors or proximity switches can be set on each side, one for detecting the degree of downward curvature and the other for detecting the degree of upward curvature, i.e., different detection values ​​can be set. When neither the downward curvature detection element nor the upward curvature detection element has a signal, it indicates that the degree of downward curvature is large and the correction degree needs to be increased. When the downward curvature detection element has a signal and the upward curvature detection element has no signal, it indicates that the correction degree is appropriate and should be maintained. When both the downward curvature detection element and the upward curvature detection element have signals, it indicates that the degree of upward curvature is large and the correction degree needs to be reduced.

[0040] Preferably, such as Figure 4 As shown, the first screw segment 431, the second screw segment 432, and the second gear 42 are connected by magnetic attraction. For example, the first screw segment 431 and the second screw segment 432 are made of iron, and the second gear 42 is made of non-metallic material with an internal magnet 46. When the second gear 42 moves to drive only the first screw segment 431, the magnet 46 attracts the first screw segment 431, and the second gear 42 drives the first screw segment 431. At this time, there is no magnetic force between the magnet 46 and the second screw segment 432, or the magnetic attraction between them cannot drive the second screw segment 432 to rotate. This can be addressed by selecting a suitable magnet. The position of the magnet 46 on the second gear 42 is determined according to the actual working conditions or other existing methods, and its installation position and magnetic strength are not specifically limited. When the second screw segment 432 is driven alone, it is the same as the first screw segment 431, and will not be described again. When the first screw segment 431 and the second screw segment 432 are driven simultaneously, the first screw segment 431 and the second screw segment 432 are rotated simultaneously by magnetic attraction through the magnet 46 and driven by the second gear 42. The magnetic connection method can reduce the matching accuracy requirements between the first screw segment 431, the second screw segment 432 and the second gear 42, and make the processing easier.

[0041] In some preferred embodiments, a controller 9 is also included; the controller 9 is connected to the drive element 3 and the detection element 6, for receiving the measurement value from the detection element 6, and controlling the drive element 3 to operate based on the measurement value, that is, controlling it based on the comparison result of the measurement value and the first distance.

[0042] In some preferred embodiments, the drive element 3 is a motor, such as a forward / reverse motor or a stepper motor.

[0043] In some preferred embodiments, the bracket 5 can move in a direction perpendicular to the aluminum foil conveying direction. That is, when the forces exerted by the first straightening member 1 and the second straightening member 2 on both sides of the aluminum foil are inconsistent, the movement of the bracket 5 can make the forces on both sides consistent. Based on this, the degree of straightening on both sides of the aluminum foil can be made more consistent. Specifically, the bracket 5 is moved by the slider rail assembly 8, that is, the rail is fixed in position and the bracket 5 is mounted on the slider.

[0044] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. An upward bending device for aluminum foil, wherein the bending correction device is used to bend and correct the edges of the aluminum foil on both sides in the width direction between two conveying rollers; characterized in that, It includes a first corrective component, a second corrective component, a driving component, a transmission component, a bracket, and a detection element; The first and second corrective components are mounted on the bracket at a distance from each other, forming a space between them for aluminum foil to pass through, and their opposite sides can act on the edges of the aluminum foil on both sides of its width to perform bending correction; The driving component is used to drive the first straightening component and the second straightening component to move closer or further apart from each other through the transmission component, so as to straighten the edges of aluminum foil with different degrees of curvature. The drive component is mounted on the bracket; The detection element is connected to the drive component and is used to detect the height of both sides of the aluminum foil paper processed into cigarette packs, so as to adjust the distance between the first correction component and the second correction component according to the detection result.

2. The upward bending device for aluminum foil according to claim 1, characterized in that, The first corrective component and the second corrective component are rotatably connected; The first corrective component includes a first segment connected end to end and located on one side of the rotational connection position, and a second segment on the other side; The second corrective component includes a third segment connected end to end and located on one side of the rotational connection position, and a fourth segment on the other side; The first segment and the third segment are used to correct the edge of the aluminum foil, and are outwardly convex arcs that protrude relatively outwards; The second and fourth segments are used to connect the transmission components so that the first and third segments can open and close.

3. The upward bending device for aluminum foil according to claim 2, characterized in that, The curvature of the first segment and the third segment decreases from the end to the side of the rotatable connection.

4. The upward bending device for aluminum foil according to claim 1, characterized in that, The first corrective element and the second corrective element are rotatably connected, and the rotating shaft is movable on the bracket, which can be close to or away from the bottom surface of the aluminum foil. The transmission component includes a first gear, a second gear, a screw, and a slider; The first gear is connected to the rotating end of the driving member and meshes with the second gear for transmission; The second gear is rotatably mounted on the bracket; The screw is a screw with both positive and negative threads, and is coaxially mounted on the second gear and screwed to the slider; The sliders are arranged in pairs and are rotatably connected to the ends of the first and second corrective components, respectively.

5. The upward bending device for aluminum foil according to claim 1, characterized in that, It also includes a support plate; The support plate is disposed between the first corrector and the second corrector, and is used to support the bottom surface of the aluminum foil.

6. The upward bending device for aluminum foil according to claim 1, characterized in that, It also includes the controller; The controller is connected to the drive unit and the detection element, and is used to receive the measurement value of the detection element and control the operation of the drive unit based on the measurement value.

7. The upward bending device for aluminum foil according to claim 1, characterized in that, The detection element includes a first detection element and a second detection element; The first detection element and the second detection element are respectively electrically connected to the driving component. The first detection element is used to detect the height of one side of the aluminum foil paper processed into a cigarette pack. The second detection element is used to detect the height of the other side of the aluminum foil paper processed into cigarette packs.

8. The upward bending device for aluminum foil according to claim 6, characterized in that, The detection element is a distance sensor.

9. An upward bending device for aluminum foil according to any one of claims 1-8, characterized in that, The driving component is a motor.

10. An upward bending device for aluminum foil according to any one of claims 1-8, characterized in that, The support can move in a direction perpendicular to the aluminum foil conveying direction.

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