Adhesive tape detection device

Abstract

The present invention belongs to the field of coil wrapping equipment and discloses a tape detection device, comprising a fixed plate: a horizontally placed rotating shaft is fixed on the fixed plate, a rotating bar is sleeved on the rotating shaft and connected in rotation, the rotating shaft is located near either end of the rotating bar, a contact block is fixed at the end of the rotating bar away from the rotating shaft, and the lower end surface of the contact block is located below the rotating bar; a horizontally placed connecting plate is fixed on the fixed plate, the connecting plate is located just above the end of the rotating bar close to the rotating shaft, a first threaded hole placed vertically downward is opened on the connecting plate, and the central axis of the first threaded hole is located on the side of the rotating shaft away from the contact block; a proximity switch is provided on the fixed plate, the proximity switch comprises a sensing shaft rod, and the sensing shaft rod is provided with threaded teeth adapted to the first threaded hole; the device realizes the detection of the exhaustion of the tape roll and issues an early warning before it is about to be exhausted, so as to remind relevant personnel to replace the tape roll.

Description

Technical Field

[0001] The invention belongs to the field of coil adhesive coating equipment, and particularly relates to an adhesive tape detection device. Background Art

[0002] After the coils are wound on an automatic winding and gluing machine for electronic transformer coils, they often require tape for isolation. The tape needs to be wrapped around the coils, and a certain amount of tension is required to ensure the tape adheres properly, thus ensuring the smoothness of the next winding. The layers of tape are inherently sticky, and by increasing the adjustment path, process requirements can be met. However, as the tape roll nears exhaustion, the layers lose adhesion and tension, making it difficult to adhere to the coils, resulting in unevenness and seriously affecting product quality.

[0003] To prevent this phenomenon, workers are usually required to keep an eye on the usage of the tape roll at all times and replace it with a new one before the tape roll is about to run out. However, such long-term and highly concentrated staring at the tape roll not only prevents the workers from performing other work, but also increases their fatigue. In addition, the tape on each layer of the tape roll is relatively thin, and it is not convenient to confirm the number of layers of tape remaining on the tape roll by naked eye. If the tape roll is replaced too early, it will cause waste of tape; if the tape is replaced too late, the tape loses tension and cannot be flatly attached to the coil, which will affect product quality. Therefore, there is a problem in the existing technology that it is not convenient to perform early warning detection of the exhaustion of the tape roll. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide a tape detection device to solve the problem in the prior art that it is inconvenient to perform early warning detection of the exhaustion of the tape roll.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A tape detection device includes a fixing plate:

[0007] A horizontally placed rotating shaft is fixed on the fixed plate, and a rotating bar is sleeved on the rotating shaft. The rotating shaft is located near either end of the rotating bar, and a contact block is fixed on the end of the rotating bar away from the rotating shaft, and the lower end surface of the contact block is located below the rotating bar;

[0008] A horizontally placed connecting plate is fixed on the fixed plate. The connecting plate is located directly above the end of the rotating bar close to the rotating shaft. A first threaded hole is opened on the connecting plate and is placed vertically downward. The central axis of the first threaded hole is located on the side of the rotating shaft away from the contact block.

[0009] A proximity switch is provided on the fixed plate, and the proximity switch includes a sensing shaft, which is provided with threaded teeth adapted to the first threaded hole. The sensing shaft is threadedly connected to the first threaded hole, and a sensing head is provided at the lower end of the sensing shaft, and a wire is connected to the upper end of the sensing shaft. When the rotating bar rotates to within the effective sensing distance of the sensing head, the proximity switch is triggered and a warning signal is issued;

[0010] The fixing plate is provided with a fixing mechanism, which is provided below the contact head. The fixing mechanism is used to fix the tape roll below the contact head, and the fixed tape roll is placed coaxially with the rotating shaft.

[0011] A second vertically placed threaded hole is opened on the connecting plate. The second threaded hole is located on the side of the first threaded hole close to the rotating shaft. An anti-collision bolt is connected to the inner thread of the second threaded hole. The lower end surface of the anti-collision bolt is located below the sensor head. The anti-collision bolt can be raised and lowered along the second threaded hole.

[0012] A rotating groove is provided at the lower end of the contact block, in which a roller is fixed and placed coaxially with the rotating shaft. A rolling bearing is provided on the roller for rotation connection, and the lower end of the rolling bearing is located outside the rotating groove;

[0013] The fixing mechanism includes a placement plate fixed on the fixing plate, the placement plate is located below the contact head, and a pair of fastening bolts coaxially placed with the rotating shaft are connected to the placement plate;

[0014] The fastening bolts are all provided with nuts with threaded connections;

[0015] The fixing mechanism also includes a slide groove provided on the placement plate, two fastening bolts are located in the slide groove, a sliding block is provided in the slide groove, one fastening bolt is fixed to the placement plate, and the other fastening bolt is fixed to the slide block, a telescopic cylinder is installed in the slide groove and is placed coaxially with the slide block, and the output end of the telescopic cylinder is fixedly connected to the slide block;

[0016] There are two nuts on the fastening bolts.

[0017] Beneficial effects of the present invention:

[0018] 1. When using, first calibrate the proximity switch with a tape roll with only the last circle of tape left, so that the contact block touches the outermost wall of the tape roll. Then, turn the sensing shaft to drive the sensing head to adjust the position so that the distance between the rotating bar directly below the sensing head and the sensing head remains within the effective sensing distance of the proximity switch.

[0019] After calibration is completed, a new tape roll is replaced. Under the action of gravity, the contact block contacts the outermost layer of the tape roll. As the tape wrapping machine works, the tape roll shrinks continuously, and the rotating bar moves away from the contact block and rotates upward. When the rotating bar rotates to enter the effective sensing distance of the sensor head, the proximity switch is triggered and an early warning signal is issued to detect the exhaustion of the tape roll and issue an early warning before it is about to run out, reminding relevant personnel to replace the tape roll.

[0020] When replacing different batches of tape rolls, the inner liner diameters or inner liner thicknesses of tape rolls of different specifications may vary, that is, when the tape roll is about to run out, the tilting angle of the rotating bar may also vary. In the present application, the threaded teeth on the sensing shaft and the first threaded hole on the connecting plate are matched to facilitate adjustment of the position of the sensing head. The proximity switch can be calibrated according to the different specifications of the tape rolls, so as to facilitate exhaustion detection for tape rolls of various specifications with different inner liner diameters or inner liner thicknesses.

[0021] 2. By setting the anti-collision bolt, when the tape is about to run out and the staff does not deal with it in time, the sensor head can be protected from collision;

[0022] 3. By setting a rotating groove on the contact block and coordinating with the setting of the rolling bearing, the lower end wall of the rolling bearing is attached to the outermost layer of the tape roll only by the action of gravity, which will not cause deformation of the tape and will not interfere with the pulling of the automatic end of the tape. In addition, the setting of the rolling wall can avoid scratching the tape surface.

[0023] 4. The tape roll can be stably fixed by the matching arrangement of the placement plate, fastening bolts and nuts, and various tape rolls with different widths can be stably fixed;

[0024] By coordinating the slide groove, the slider and the telescopic cylinder, the distance between the two fastening bolts can be adjusted, so as to achieve the purpose of fixing a variety of tape rolls with different inner lining diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a partial structural diagram of the rotating bar of the present invention;

[0028] Figure 3 It is a partial structural schematic diagram of the rolling bearing of the present invention;

[0029] Figure 4 It is a partial structural diagram of the placement plate of the present invention;

[0030] Figure 5 It is a partial structural schematic diagram of the telescopic cylinder of the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] like Figures 1 to 5 As shown, a tape detection device includes a fixing plate 100:

[0033] A horizontally placed rotating shaft 200 is fixed to the fixed plate 100. A rotating bar 300 is rotatably mounted on the rotating shaft 200. The rotating shaft 200 is located near either end of the rotating bar 300. A contact block 400 is fixed to the end of the rotating bar 300 away from the rotating shaft 200. The lower end surface of the contact block 400 is located below the rotating bar 300.

[0034] A horizontally placed connecting plate 500 is fixed to the fixed plate 100. The connecting plate 500 is located directly above the end of the rotating bar 300 close to the rotating shaft 200. A first threaded hole is formed in the connecting plate 500 and extends vertically downward. The central axis of the first threaded hole is located on the side of the rotating shaft 200 away from the contact block 400.

[0035] The fixed plate 100 is provided with a proximity switch 600, which includes a sensing shaft 601. The sensing shaft 601 is provided with threaded teeth 602 that are adapted to the first threaded hole. The sensing shaft 601 is threadedly connected to the first threaded hole. The sensing shaft 601 has a sensing head at its lower end and a wire connected to its upper end. When the rotating bar 300 rotates to within the effective sensing range of the sensing head, the proximity switch 600 is triggered and a warning signal is issued.

[0036] The fixing plate 100 is provided with a fixing mechanism 700, which is provided below the contact head. The fixing mechanism 700 is used to fix the tape roll below the contact head, and the fixed tape roll is placed coaxially with the rotating shaft 200;

[0037] The present application is arranged in conjunction with a prior art lagging machine. The fixing plate 100 or the fixing mechanism 700 in the present application can be fixedly connected to the lagging machine, and the free end of the tape roll is stretched onto the lagging machine.

[0038] During use, first calibrate the proximity switch 600 with a tape roll with only the last coil of tape remaining, so that the contact block 400 contacts the outermost wall of the tape roll. Then, rotate the sensing shaft 601. The threaded teeth 602 on the wall engage with the threads of the first threaded hole to control the lifting and lowering of the sensing shaft 601. The sensing shaft 601 drives the sensing head to adjust its position so that the distance between the rotating bar 300 directly below the sensing head and the sensing head remains within the effective sensing range of the proximity switch 600.

[0039] After calibration is completed, a new tape roll is replaced and fixed. Under the action of gravity, the contact block 400 contacts the outermost layer of the tape roll. Then, as the taping machine works, the tape roll shrinks continuously, and the rotating bar 300 moves away from the contact block 400 and continuously rotates upward. When the rotating bar 300 rotates to enter the effective sensing distance of the sensor head, the proximity switch 600 is triggered and issues a warning signal, thereby detecting the tape roll and issuing a warning before it is about to run out, reminding relevant personnel to deal with it in advance to avoid any problems.

[0040] When replacing different batches of tape rolls, there will be differences in the inner lining diameter or inner lining thickness of tape rolls of different specifications, that is, when the tape roll is about to run out, the tilting angle of the rotating bar 300 will also be different. In this application, the threaded teeth 602 on the sensing shaft 601 and the first threaded hole on the connecting plate 500 are matched to facilitate the adjustment of the position of the sensing head, and the proximity switch 600 can be calibrated according to the different specifications of the tape roll, so as to realize the exhaustion detection of tape rolls of various specifications with different inner lining diameters or inner lining thicknesses.

[0041] If the staff does not handle it in time when the tape is about to run out, the rotating bar 300 will collide with the sensing head. In order to avoid damage to the sensing head due to collision, a second vertically placed threaded hole is opened on the connecting plate 500. The second threaded hole is located on the side of the first threaded hole close to the rotating shaft 200. The second threaded hole is threadedly connected to an anti-collision bolt 603. The lower end surface of the anti-collision bolt 603 is located below the sensing head. The anti-collision bolt 603 can be raised and lowered along the second threaded hole. After each calibration of the proximity switch 600, the anti-collision bolt 603 is turned to move its lower end down to a position about 1 mm below the sensing head, which can provide anti-collision protection for the sensing head.

[0042] In order to prevent the contact block 400 from affecting the free pulling of the tape roll and to avoid the contact block 400 from scratching the surface of the tape roll, a rotation groove is provided at the lower end of the contact block 400, in which a roller is fixed and placed coaxially with the rotating shaft 200, and a rolling bearing 800 is provided on the roller for rotation connection, and the lower end of the rolling bearing 800 is located outside the rotation groove; through the setting of the rotation groove and the rolling bearing 800, the circumferential wall of the lower end of the rolling bearing 800 is made to contact the circumferential wall outside the tape roll during detection.

[0043] In order to facilitate the maintenance of the coaxial support and placement of the tape roll and the rotating shaft 200, the fixing mechanism 700 includes a placement plate 701 fixed on the fixing plate 100, the placement plate 701 is located below the contact head, and a pair of fastening bolts 702 coaxially placed with the rotating shaft 200 are connected to the placement plate 701; when in use, the inner lining ring of the tape roll is put on the two fastening bolts 702, so that the two fastening bolts 702 support the inner wall of the inner lining ring, thereby achieving the coaxial support and placement of the tape roll and the rotating shaft 200.

[0044] In order to improve the fixing stability of the tape roll and avoid it from shaking or rotating when the free end of the tape roll is pulled, a threaded nut 703 is sleeved on the fastening bolt 702; the tape roll is placed between the placement plate 701 and the nut 703, and then the nut 703 is screwed to bring it close to the tape roll, so that the nut 703 is squeezed and contacted with the inner lining ring of the tape roll away from the placement plate 701, thereby achieving stable fixation of the tape roll, and can achieve stable fixation of tape rolls of various specifications with different tape widths.

[0045] In order to facilitate the fixation of various tape rolls with different inner lining diameters, the fixing mechanism 700 also includes a slide groove 7011 opened on the placement plate 701, and the two fastening bolts 702 are both located in the slide groove 7011. A sliding block 704 for sliding engagement is provided in the slide groove 7011. Any fastening bolt 702 is fixed to the placement plate 701, and the other fastening bolt 702 is fixed on the slider 704. A telescopic cylinder 705 is installed in the slide groove 7011 and is placed coaxially with it. The output end of the telescopic cylinder 705 is fixedly connected to the slider 704; the slider 704 can be driven by the telescopic cylinder 705, and then the distance between the two fastening bolts 702 can be adjusted, so as to achieve the purpose of being convenient for fixing various tape rolls with different inner lining diameters.

[0046] There are two nuts 703 on the fastening bolts 702, which can improve the locking ability and prevent loosening.

[0047] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A tape detection device, comprising a fixing plate (100), characterized in that: A horizontally placed rotating shaft (200) is fixed on the fixed plate (100), a rotating bar (300) is sleeved on the rotating shaft (200) and is rotatably connected thereto, the rotating shaft (200) is located near either end of the rotating bar (300), a contact block (400) is fixed on the end of the rotating bar (300) away from the rotating shaft (200), and the lower end surface of the contact block (400) is located below the rotating bar (300); A horizontally placed connecting plate (500) is fixed on the fixed plate (100), and the connecting plate (500) is located directly above the end of the rotating bar (300) close to the rotating shaft (200). A first threaded hole is opened on the connecting plate (500) and is placed vertically downward, and the central axis of the first threaded hole is located on the side of the rotating shaft (200) away from the contact block (400); A proximity switch (600) is provided on the fixed plate (100), and the proximity switch (600) includes a sensing shaft (601), a threaded tooth (602) adapted to the first threaded hole is provided on the sensing shaft (601), the sensing shaft (601) is threadedly connected to the first threaded hole, a sensing head is provided at the lower end of the sensing shaft (601), and a wire is connected to the upper end of the sensing shaft (601), and when the rotating bar (300) rotates to within the effective sensing distance of the sensing head, the proximity switch (600) is triggered and sends a warning signal; A fixing mechanism (700) is provided on the fixing plate (100), and the fixing mechanism (700) is provided below the contact head. The fixing mechanism (700) is used to fix the tape roll below the contact head, and the fixed tape roll is coaxially placed with the rotating shaft (200).

2. The tape detection device according to claim 1, characterized in that: A second vertically placed threaded hole is provided on the connecting plate (500), and the second threaded hole is located on a side of the first threaded hole close to the rotating shaft (200). An anti-collision bolt (603) is connected to the inner thread of the second threaded hole, and the lower end surface of the anti-collision bolt (603) is located below the sensing head. The anti-collision bolt (603) can be raised and lowered along the second threaded hole.

3. The tape detection device according to claim 2, characterized in that: A rotation groove is provided at the lower end of the contact block (400), a roller coaxially arranged with the rotating shaft (200) is fixed in the rotation groove, a rolling bearing (800) is sleeved on the roller for rotation connection, and the lower end of the rolling bearing (800) is located outside the rotation groove.

4. The tape detection device according to claim 3, characterized in that: The fixing mechanism (700) includes a placement plate (701) fixed on the fixing plate (100), the placement plate (701) is located below the contact head, and a pair of fastening bolts (702) coaxially placed with the rotating shaft (200) are connected to the placement plate (701).

5. The tape detection device according to claim 4, characterized in that: The fastening bolts (702) are sleeved with nuts (703) that are threadedly connected.

6. The tape detection device according to claim 5, characterized in that: The fixing mechanism (700) further comprises a slide groove (7011) provided on the placement plate (701), two fastening bolts (702) are both located in the slide groove (7011), a sliding block (704) for sliding engagement is provided in the slide groove (7011), one fastening bolt (702) is fixed to the placement plate (701), and the other fastening bolt (702) is fixed to the slider (704), a telescopic cylinder (705) coaxially arranged therewith is installed in the slide groove (7011), and an output end of the telescopic cylinder (705) is fixedly connected to the slider (704).

7. The tape detection device according to claim 5, characterized in that: The number of nuts (703) on the fastening bolts (702) is two.

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