An aluminum foil paper end detection mechanism

Abstract

This utility model discloses an aluminum foil roll depletion detection mechanism, including a back plate and an unwinding shaft. The unwinding shaft is mounted on the back plate, and a fixed rotating drum is mounted on the unwinding shaft near the back plate. A movable rotating drum is detachably mounted on the unwinding shaft away from the back plate. Both the fixed and movable rotating drums can rotate around the unwinding shaft. Two sets of clamping mechanisms are slidably mounted on the back plate, located above and below the unwinding shaft, respectively. The upper clamping mechanism has a lifting rod and a fixed post. The lifting rod passes through the clamping mechanism and has a proximity switch at its top and a ball head at its bottom. The fixed post is fixedly mounted on the clamping mechanism and has a movable sensing component for activating the proximity switch. This utility model prevents the aluminum foil roll from jumping, making it suitable for aluminum foil rolls of different specifications and allowing for easy and accurate adjustment of the detection position.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, specifically to a device for detecting when aluminum foil is used up. Background Technology

[0002] In the production process of the GDX1 packaging machine, aluminum foil rolls provide aluminum foil for molded cigarettes to wrap them. Our company's previously filed utility model patent, publication number CN221585887U, describes an aluminum foil depletion detection device for a GDX2 hard-pack packaging machine. This device includes: an optical fiber amplifier for detecting whether aluminum foil on the aluminum foil mounting shaft is depleted using light emitted through a hole in the base disc; and a controller for acquiring a stop signal generated by the optical fiber amplifier and issuing a command to display a depletion message. This mechanism can detect the depletion of aluminum foil. However, in actual use, the applicant discovered the following defects: Firstly, when aluminum foil rolls of different manufacturers and specifications are used, the core diameter of the aluminum foil rolls is different, and the mounting shaft 2 cannot adapt to aluminum foil rolls of different diameters, causing the aluminum foil rolls to bounce on the mounting shaft 2, resulting in detection deviations. Secondly, the device cannot accurately adjust the detection position according to the thickness of the aluminum foil, limiting its use. Therefore, this utility model further improves upon this, proposing an aluminum foil depletion detection mechanism. Utility Model Content

[0003] The purpose of this invention is to provide an aluminum foil roll depletion detection mechanism to prevent the aluminum foil roll from jumping, thereby making it suitable for aluminum foil rolls of different specifications and allowing for easy and accurate adjustment of the detection position.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A used aluminum foil detection mechanism includes a back plate and an unwinding shaft. The unwinding shaft is mounted on the back plate, and a fixed rotating drum is mounted on the side of the unwinding shaft near the back plate. A movable rotating drum is detachably mounted on the end of the unwinding shaft away from the back plate. Both the fixed and movable rotating drums can rotate around the unwinding shaft. Two sets of clamping mechanisms are slidably mounted on the back plate, located above and below the unwinding shaft, respectively. The upper clamping mechanism is equipped with a lifting rod and a fixed column. The lifting rod passes through the clamping mechanism and has a proximity switch at its top and a ball head at its bottom. The fixed column is fixedly mounted on the clamping mechanism and has a sensing component that can be raised and lowered to activate the proximity switch.

[0006] Furthermore, the movable rotating drum includes an outer drum, an inner drum, and a rotating drum. The inner drum and the outer drum are integrally formed and the inner drum is located inside the outer drum. The inner side of the rotating drum is provided with an internal thread and is threadedly connected to the unwinding shaft. A bearing is provided on the outer circumference of the rotating drum, and the inner drum passes through the bearing. A rotating handle is provided at the end of the rotating drum.

[0007] Furthermore, both the outer cylinder and the fixed rotating cylinder are frustum-shaped structures, and the outer cylinder port is also provided with a sealing plate.

[0008] Furthermore, the clamping mechanism includes a support plate, square rods, a pressure roller connecting seat, and a pressure roller. There are two square rods that pass through the support plate. A pressure roller connecting seat is provided at one end of the square rod. A pressure roller is rotatably mounted on the pressure roller connecting seat. A spring passes through the square rod. The two ends of the spring are connected to the pressure roller connecting seat and the support plate, respectively.

[0009] Furthermore, at least two sliding arms are provided on the back side of the support plate, and a strip-shaped hole is provided on the back plate. The sliding arms are slidably disposed in the strip-shaped hole, and the upper and lower support plates are connected by a drive mechanism.

[0010] Furthermore, a rotating sleeve is provided at the upper end of the lifting rod, and a reference lever is provided on the rotating sleeve. When the rotating sleeve is rotated, the reference lever contacts the fixed column.

[0011] Furthermore, the fixed post is provided with an external thread and a threaded sleeve is threadedly connected to the fixed post. A sensing component mounting sleeve is fitted around the outer periphery of the threaded sleeve. The sensing component is mounted on the sensing component mounting sleeve and corresponds to the proximity switch.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features a fixed rotating drum and a movable rotating drum on the unwinding shaft. The aluminum foil roll is placed between the fixed and movable rotating drums, both of which can rotate around the unwinding shaft without affecting the rotation of the aluminum foil roll. The movable rotating drum includes an outer drum, an inner drum, and a rotating drum. The rotating drum is threadedly connected to the unwinding shaft, allowing for adjustment of its position. Both the outer drum and the fixed rotating drum are frustum-shaped structures, accommodating the installation of aluminum foil roll cores of different diameters. Two sets of clamping mechanisms are also provided on the back plate to press the aluminum foil roll, preventing it from jumping during the winding process and affecting detection. A lifting rod and a fixed column are provided on the upper clamping mechanism. The lifting rod passes through the clamping mechanism and has a proximity switch at its top. A sensing component is mounted on the fixed column, which can be raised and lowered. When adjusting the detection position, the position of the sensing component can be adjusted according to the aluminum foil, making the adjustment process simple, convenient, and precise. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a diagram showing the disassembly of the rotating drum.

[0016] Figure 3 This is a schematic diagram of the cross-section of the assembled movable rotating drum.

[0017] Figure 4 This is a schematic diagram of the winding clamping mechanism.

[0018] Figure 5 This is a schematic diagram showing the disassembly of the rotating sleeve and the screw sleeve.

[0019] Figure 6 This is a schematic diagram of the preferred method for raising the boom.

[0020] Figure 7 This is a schematic diagram of the adjustment process of the sensing component.

[0021] In the diagram, 1-back plate, 2-fixed rotating drum, 3-unwinding shaft, 4-movable rotating drum, 41-outer drum, 42-inner drum, 43-rotating drum, 44-handle, 5-clamping mechanism, 6-lifting rod, 7-rotating sleeve, 8-proximity switch, 9-reference lever, 10-fixed column, 11-screw sleeve, 12-sensor mounting sleeve, 13-sensor component, 14-drive mechanism, 15-ball head. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Please see Figure 1 This utility model provides an aluminum foil roll depletion detection mechanism, including a back plate 1 and an unwinding shaft 3. The unwinding shaft 3 is mounted on the back plate 1. A fixed rotating drum 2 is mounted on the unwinding shaft 3 near the back plate 1, and a movable rotating drum 4 is detachably mounted on the unwinding shaft 3 away from the back plate 1. The aluminum foil is placed between the fixed rotating drum 2 and the movable rotating drum 4. Both the fixed rotating drum 2 and the movable rotating drum 4 can rotate around the unwinding shaft 3, so as not to affect the rotation and pulling out of the aluminum foil roll.

[0026] Specifically, refer to Figure 2-3 As shown, the movable rotating drum 4 includes an outer drum 41, an inner drum 42, and a rotating drum 43. The inner drum 42 and the outer drum 41 are integrally formed, and the inner drum 42 is located inside the outer drum 41. The inner side of the rotating drum 43 is provided with an internal thread and is threadedly connected to the unwinding shaft 3, so that the movable rotating drum 4 can be disassembled and its axial direction adjusted, thereby adapting to the installation of aluminum foil rolls of different lengths. In order not to affect the rotation of the inner drum 42, a bearing 43 is provided on the outer periphery of the rotating drum 43, and the inner drum 42 passes through the bearing 43. The rotating drum 43 is a hollow tubular structure, and a rotating handle 44 is provided at the end of the rotating drum 43 to facilitate the rotation of the rotating drum 43.

[0027] More specifically, both the outer cylinder 41 and the fixed rotating cylinder 2 are frustum-shaped structures, which allows the cores of aluminum foil rolls of different diameters to be supported, thereby preventing the aluminum foil rolls from jumping. Similarly, the inner side of the fixed rotating cylinder 2 is also provided with an inner cylinder 42 and a bearing 43 structure, which allows it to be rotatably connected to the unwinding shaft 3. The outer cylinder 41 port is also provided with a sealing plate 46, and the sealing plate 46 is provided with a round hole to allow the rotating cylinder 43 to pass through.

[0028] In addition, to prevent the aluminum foil roll from jumping, two sets of clamping mechanisms 5 are slidably arranged on the back plate 1. The clamping mechanisms 5 are located above and below the unwinding shaft 3, respectively. The upper clamping mechanism 5 is provided with a lifting rod 6 and a fixed column 10. The lifting rod 6 passes through the clamping mechanism 5 and a proximity switch 8 is provided at the top of the lifting rod 6. A ball head 15 is provided at the bottom of the lifting rod 6. The ball head 15 contacts the aluminum foil roll. The fixed column 10 is fixedly arranged on the clamping mechanism 5 and a sensing component 13 for sensing the proximity switch 8 is provided on the fixed column 10. As the aluminum foil is pulled out, its thickness gradually decreases, causing the lifting rod 6 to gradually descend. When the aluminum foil is fully pulled out or about to be fully pulled out, the proximity switch 8 corresponds to the sensing component 13, thereby triggering the switch action of the proximity switch 8. The proximity switch 8 can be a photoelectric proximity switch or a capacitive proximity switch.

[0029] Specifically, refer to Figure 4 As shown, the clamping mechanism 5 includes a support plate 51, square rods 55, a pressure roller connecting seat 53, and a pressure roller 54. There are two square rods 55, which are inserted through the support plate 51. A pressure roller connecting seat 53 is provided at one end of the square rod 55. A pressure roller 54 is rotatably mounted on the pressure roller connecting seat 53. The pressure roller 54 is in contact with the aluminum foil roll. A spring 52 is inserted through the square rod 55. The two ends of the spring 52 are connected to the pressure roller connecting seat 53 and the support plate 51, respectively, so that the position of the pressure roller 54 can be adaptively adjusted.

[0030] More specifically, in order to enable the support plate 51 to move up and down, at least two sliding arms 56 are provided on the back side of the support plate 51, and a strip hole 1a is provided on the back plate 1. The sliding arms 56 are slidably disposed in the strip hole 1a, and the upper and lower support plates 51 are connected by a drive mechanism 14.

[0031] In some embodiments, the drive mechanism 14 can be a double-acting cylinder with two upper and lower push-out ends connected to the support plate 51; it can also be two single-acting cylinders connected to the support plate 51 respectively; in addition, it can be a screw and motor structure. This utility model does not limit this. It is worth noting that when a motor and screw structure is used, the screw is provided with two sections of threads with opposite directions of rotation so that the two support plates 51 can be driven synchronously by one screw.

[0032] refer to Figure 5 As shown, a rotating sleeve 7 is provided at the upper end of the lifting rod 6, and a reference lever 9 is provided on the rotating sleeve 7. When the rotating sleeve 7 is rotated, the reference lever 9 contacts the fixed post 10, and the contact point is the corresponding position of the proximity switch 8 on the fixed post 10. Preferably, in order to prevent the lifting rod 6 from rotating and to avoid affecting the rotation of the rotating sleeve 7, the lifting rod 6 is designed as a double-rod structure, as shown in the figure. Figure 6 As shown.

[0033] The fixed post 10 is provided with an external thread and a threaded sleeve 11 is threadedly connected to the fixed post 10. A sensing component mounting sleeve 12 is sleeved on the outer periphery of the threaded sleeve 11. The sensing component 13 is disposed on the sensing component mounting sleeve 12 and corresponds to the proximity switch 8.

[0034] The working process of this utility model is as follows: start the drive mechanism 14 so that the upper and lower clamping mechanisms 5 are away from the unwinding shaft 3, rotate the handle 44 to remove the movable rotating drum 4, place the aluminum foil roll between the fixed rotating drum 2 and the movable rotating drum 4, rotate the handle 44 until the aluminum foil roll does not jump on the two rotating drums 4, start the drive mechanism 14 so that the clamping mechanism 5 is close to the unwinding shaft 3 and the pressure roller 54 contacts the aluminum foil roll, and then adjust the height position of the sensing component 13 according to the thickness of the aluminum foil roll.

[0035] refer to Figure 7 As shown, the adjustment process for the sensing component 13 is as follows: Figure 7 As shown in state I, after installing the aluminum foil roll, the ball head 15 contacts the upper end of the aluminum foil roll's circumference. Rotating the rotating sleeve 7 causes the reference lever 9 to contact the fixed post 10. This position corresponds to the proximity switch 8 when the aluminum foil roll is not in use, denoted as A. The height of position A is L. After obtaining the thickness d of the aluminum foil roll, as... Figure 7 As shown in state II, slide the rotating sleeve 7 downwards, sliding a distance of d (or less than d). Then rotate the reference lever 9 again until it contacts the fixed post 10. This position is denoted as B. This position corresponds to the proximity switch 8 after the aluminum foil roll has been used up or is about to be used up. Adjust the sensing element 13 to this position to complete the position adjustment of the sensing element 13. Figure 7 As shown in state III, when the aluminum foil roll is used up or about to be used up, the lifting rod 6 gradually falls. When the proximity switch 8 at the top of the lifting rod 6 falls to position B, the proximity switch 8 corresponds to the sensing component 13, thereby the proximity switch 8 performs a switching action.

[0036] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. An aluminum foil depletion detection mechanism, comprising a back plate (1) and an unwinding shaft (3), wherein the unwinding shaft (3) is disposed on the back plate (1), characterized in that: A fixed rotating drum (2) is provided on the side of the unwinding shaft (3) near the back plate (1), and a movable rotating drum (4) is detachably provided on the end of the unwinding shaft (3) away from the back plate (1). Both the fixed rotating drum (2) and the movable rotating drum (4) can rotate around the unwinding shaft (3). Two sets of clamping mechanisms (5) are slidably provided on the back plate (1). The clamping mechanisms (5) are located above and below the unwinding shaft (3), respectively. The clamping mechanism (5) located above is provided with a lifting rod (6) and a fixed column (10). The lifting rod (6) passes through the clamping mechanism (5) and a proximity switch (8) is provided at the top of the lifting rod (6) and a ball head (15) is provided at the bottom. The fixed column (10) is fixedly provided on the clamping mechanism (5) and a sensing component (13) for the proximity switch (8) to be sensed is provided on the fixed column (10) in a way that can be raised and lowered.

2. The aluminum foil depletion detection mechanism according to claim 1, characterized in that: The movable rotating drum (4) includes an outer drum (41), an inner drum (42), and a rotating drum (43). The inner drum (42) and the outer drum (41) are integrally formed and the inner drum (42) is located inside the outer drum (41). The inner side of the rotating drum (43) is provided with an internal thread and is threadedly connected to the unwinding shaft (3). A bearing (43) is provided on the outer circumference of the rotating drum (43), and the inner drum (42) passes through the bearing (43). A rotating handle (44) is provided at the end of the rotating drum (43).

3. The aluminum foil depletion detection mechanism according to claim 2, characterized in that: Both the outer cylinder (41) and the fixed rotating cylinder (2) are frustum-shaped structures, and the outer cylinder (41) is also provided with a sealing plate (46) at the port.

4. The aluminum foil depletion detection mechanism according to claim 1, characterized in that: The clamping mechanism (5) includes a support plate (51), a square rod (55), a pressure roller connecting seat (53), and a pressure roller (54). There are two square rods (55) that are inserted through the support plate (51). A pressure roller connecting seat (53) is provided at one end of the square rod (55). A pressure roller (54) is rotatably installed on the pressure roller connecting seat (53). A spring (52) is inserted through the square rod (55). The two ends of the spring (52) are connected to the pressure roller connecting seat (53) and the support plate (51) respectively.

5. The aluminum foil depletion detection mechanism according to claim 4, characterized in that: At least two sliding arms (56) are provided on the back side of the support plate (51). A strip hole (1a) is provided on the back plate (1). The sliding arm (56) is slidably disposed in the strip hole (1a). The upper and lower support plates (51) are connected by a drive mechanism (14).

6. The aluminum foil depletion detection mechanism according to claim 1, characterized in that: The upper end of the lifting rod (6) is provided with a rotating sleeve (7), and a reference paddle (9) is provided on the rotating sleeve (7). When the rotating sleeve (7) is rotated, the reference paddle (9) contacts the fixed column (10).

7. The aluminum foil depletion detection mechanism according to claim 1, characterized in that: The fixed post (10) is provided with an external thread and a threaded sleeve (11) is threadedly connected to the fixed post (10). A sensing component mounting sleeve (12) is provided on the outer periphery of the threaded sleeve (11). The sensing component (13) is provided on the sensing component mounting sleeve (12) and the sensing component (13) corresponds to the proximity switch (8).

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