Automatic adhesive tape cutting and loosening device

Abstract

An automatic adhesive tape cutting and loosening device is used for an adhesive tape bag sealing packaging machine. The adhesive tape bag sealing and packaging machine comprises a fixed seat and an adhesive tape whole-circle winding and rotating device arranged on the fixed seat. The adhesive tape whole-circle winding and rotating device drives the adhesive tape roll to conduct whole-circle winding and box sealing. The automatic adhesive tape cutting and loosening device comprises a fixed plate which is fixedly arranged relative to the fixed seat and a lever which can be rotatably connected to the fixed plate, and a blade is fixedly arranged on one side of the lever. The lever and the adhesive tape whole-circle winding device are matched to rotate to be opened or reset so as to avoid the adhesive tape or cut off the adhesive tape and press the adhesive tape head. According to the automatic cutting and loosening device for the adhesive tape, the blade is driven by the lever to automatically cut off the adhesive tape, so that the packaging efficiency is improved, the manpower is saved, and the packaging effect is good.

Description

[0001] This application is a divisional application of the invention patent application with the application date of December 25, 2020, application number 202011558407.8, and invention name “Rotary wrap-around tape sealing and packaging machine”. Technical Field

[0002] The invention relates to an adhesive tape box sealing and packaging machine, in particular to an adhesive tape automatic cutting and releasing device of the adhesive tape box sealing and packaging machine. Background Art

[0003] With the development of the times, online shopping is becoming more and more popular. Before online shopping items are sent through logistics and express delivery, they need to be packaged and sealed, and tape is used for sealing. The traditional method is that people hold the tape and use a full circle to seal the box or a cross-shaped full circle to seal the box. The operation is troublesome and laborious, and the sealing efficiency is low. Therefore, people invented automatic tape sealing equipment, but this type of sealing equipment usually only automatically seals the upper and lower openings of the packaging box, and cannot seal the box with a full circle of tape. In addition, the tape may not be tightly adhered during sealing, which may easily cause the items in the packaging box to fall out. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide an automatic tape cutting and loosening device, and automatically cut the tape after sealing the box, which is easy to operate, has high sealing efficiency and good sealing effect.

[0005] An automatic tape cutting and releasing device is used in a tape box sealing and packaging machine, the tape box sealing and packaging machine comprises a fixed seat and a tape full circle winding and rotating device arranged on the fixed seat, the tape full circle winding and rotating device drives the tape roll to perform full circle winding and box sealing, and is characterized in that the automatic tape cutting and releasing device comprises:

[0006] A fixing plate, fixedly arranged relative to the fixing seat;

[0007] A lever is rotatably connected to the fixed plate, and a blade is fixedly provided on one side of the lever;

[0008] The lever cooperates with the tape full-circle winding device to rotate to open or reset, so as to avoid or cut off the tape and press the tape head.

[0009] Furthermore, the automatic tape cutting and releasing device also includes a platform bridging structure, which is fixedly connected to the fixed plate and has a connecting bridge formed on one side of the fixed plate. The connecting bridge and the blade are located on the same side of the fixed plate, and the lever opens and closes relative to the connecting bridge to avoid or cut the tape and press the tape head.

[0010] Furthermore, the support platform is provided with a corresponding positioning seat, and the positioning seat is provided with a positioning groove and an upright positioning plate.

[0011] Furthermore, the lever is provided with a mounting groove, in which a magnet is arranged, and the magnet can be attracted to the connecting bridge by magnetic force.

[0012] Furthermore, the platform bridging structure includes a tape push plate movably arranged relative to the connecting bridge, a spring is arranged between the tape push plate and the lower end of the connecting bridge, and the lower end of the tape push plate is provided with concave and convex teeth, which are in contact with the bonding surface of the tape head.

[0013] Furthermore, the platform bridging structure includes a connecting rod, and the outer wall of the connecting rod is formed with a thread groove or a rotating ring is sleeved on the outer wall of the connecting rod.

[0014] Furthermore, the rotating circle is spiral.

[0015] Furthermore, the automatic tape cutting and loosening device also includes a gear rotatably arranged on the fixed plate and a cam that can rotate with the rotation of the gear, and the gear cooperates with the tape full circle winding and rotating device. When the tape full circle winding and rotating device rotates to a predetermined position, the gear is driven to rotate, and the cam cooperates with the lever to control the lever to rotate open or reset.

[0016] Furthermore, the lever includes a guide head, and the guide head and the blade are respectively located on both sides of the rotation axis of the lever, and the guide head is in contact with the cam to control the lever to rotate, open or reset.

[0017] Furthermore, the guide head and the blade are respectively located on two sides of the fixing plate, and the guide head passes through the fixing plate to cooperate with the cam.

[0018] Furthermore, a bearing sleeve is sleeved on the outer wall of the guide head, and the bearing sleeve cooperates with the cam.

[0019] Furthermore, it also includes a torsion spring, one end of which is in contact with the lever, and the other end of which is in contact with the fixing plate, for resetting the lever.

[0020] The automatic tape cutting and releasing device drives the blade to automatically cut the tape through the lever, thereby improving the packaging efficiency, saving manpower, and achieving a good packaging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the rotary wrap-around adhesive tape box sealing and packaging machine of the present invention;

[0022] Figure 2It is a three-dimensional schematic diagram of the coordination state of the fixing seat and the tape full circle winding rotating device;

[0023] Figure 3 It is a front three-dimensional schematic diagram of the coordination state of the tape full circle winding and rotating device, the tape automatic cutting and releasing device and the platform bridging structure;

[0024] Figure 4 It is a three-dimensional schematic diagram of the back side of the tape full circle winding and rotating device, the tape automatic cutting and releasing device and the platform bridge structure;

[0025] Figure 5 It is a three-dimensional schematic diagram of the coordination state of the automatic tape cutting and releasing device and the platform bridging structure;

[0026] Figure 6 It is a structural schematic diagram of the coordinated state of the automatic tape cutting and releasing device and the platform bridging structure;

[0027] Figure 7 It is a three-dimensional schematic diagram of the coordination state of the fixing seat and the linkage type bottom tape laminating device of the packaging box;

[0028] Figure 8 It is a three-dimensional schematic diagram of the coordination state of the adhesive tape laminating device at the bottom of the linkage packaging box, the gears and the linkage block;

[0029] Fig. 9 It is a front perspective schematic diagram of the elastic tensioning device in a disassembled state;

[0030] Fig.10 It is a three-dimensional schematic diagram of the back side of the elastic tensioning device in the exploded state. DETAILED DESCRIPTION

[0031] The present invention relates to a rotating wrap-around tape box sealing and packaging machine. Figure 1 — Fig.10 As shown, it includes a fixing seat 1, on which a tape full circle winding and rotating device, a tape automatic cutting and releasing device, a linkage type packaging box bottom tape laminating device and a platform bridging structure are arranged;

[0032] The adhesive tape full circle winding rotating device comprises a bracket 21, the bracket is fixed to the upper end of the fixing seat 1, an annular bearing inner ring 22 is arranged on one side of the bracket, an annular rotating disk 23 is arranged on the outer wall of the annular bearing inner ring, the annular rotating disk and the annular bearing inner ring are rotatably matched, a rotating plate 24 is arranged on the annular rotating disk 23, the rotating plate is fixed to the annular rotating disk via a fastener, an adhesive tape fixing ring 25 and a handle 26 are arranged on the rotating plate, and an adhesive tape roll is arranged on the adhesive tape fixing ring;

[0033] The automatic tape cutting and releasing device comprises a fixed plate 31, which is fixed to the side wall of the inner ring 22 of the annular bearing, a lever 32 is arranged on one side of the fixed plate, a rod shaft 33 is formed on both sides of the lever, a first torsion spring 34 is arranged on the rod shaft, one end of the first torsion spring is in contact with the lower end of the lever, and the other end of the first torsion spring is in contact with the fixed plate, a transverse rotating shaft 35 passes through the rod shaft, the lever and the rotating shaft are rotatably matched, the rotating shaft is fixedly connected to the fixed plate, a blade 36 is arranged on the side wall of one end of the lever, a guide head 37 is formed on the other end of the lever, the guide head passes through the fixed plate 31, a fixed bearing 38 is arranged on the other side of the fixed plate, a gear 39 is arranged on the outer ring of the fixed bearing, a cam 40 is formed on the side wall of the gear, the cam cooperates with the guide head, a first half tooth 41 and a second half tooth 42 are arranged on the rotating plate 24, and the rotating plate 24 drives the first half tooth and the second half tooth to mesh with the gear 39 respectively;

[0034] The linkage type packaging box bottom adhesive tape laminating device comprises left and right two guide rod frames 51, the guide rod frames are fixed to the inside of the fixed seat 1, a guide rod 52 is arranged between the left and right two guide rod frames, a slide seat 53 is arranged on the guide rod, a guide plate 54 is arranged on one side of the slide seat, a vertical guide hole 55 is formed on the guide plate, a linkage block 56 is arranged on the side wall of the cam 40, a linkage shaft 57 is formed on the linkage block, the linkage shaft matches the guide hole 55, a toggle plate 58 is arranged on the other side of the slide seat 53, a toggle groove 59 is formed on the toggle plate, a tape scraping brush 60 is arranged in the fixed seat 1, one end of the tape scraping brush is rotatably connected to the fixed seat via a rotating pin 61, the brush rod of the tape scraping brush matches the toggle groove, the tape scraping brush passes through the gap between the upper end of the fixed plate 31 and the fixed seat 1, a brush head 62 made of soft material is arranged on the other end of the tape scraping brush, and the brush head contacts the smooth surface of the tape at the bottom of the packaging box;

[0035] The platform bridge structure includes a mounting plate 71, which is fixed to the fixing plate 31 via fasteners. A connecting bridge 72 is formed on one side of the mounting plate, and a supporting platform 73 is formed at the other end of the connecting bridge. The mounting plate and the supporting platform are connected via the connecting bridge, and the upper end of one end of the lever and the lower end of the connecting bridge are in pressing contact with the head of the tape roll.

[0036] The present invention discloses a rotating wrap-around tape box sealing and packaging machine. When sealing a box, people first put the tape roll on the tape fixing ring 25, the tape roll and the tape fixing ring are tightly matched, and the tape of the tape roll is pulled out (the adhesive side of the tape faces upward, and the smooth side faces downward). Then, one end of the lever 32 is rotated downward around the rotating shaft 35 by hand to make the blade 36 on the lever open downward. At this time, the tape head is passed through between the lever 32 and the connecting bridge 72. The lever is released by hand. Under the action of the restoring force of the first torsion spring 34, the lever rotates upward to reset, and the lever drives the blade 36 to reset. The blade cuts off the excess part of the tape head after passing through, and the lever and the connecting bridge 72 press the tape head. Then people put the box on the fixed The seat 1 and the support platform 73 of the platform bridge structure are placed on the support platform 73, and the position of the packaging box to be sealed is facing the tape head below (that is, the position of the packaging box to be sealed corresponds to the gap between the fixed seat 1 and the support platform 73). One hand presses the packaging box, and the other hand rotates the handle 26. The handle drives the rotating plate 24, and the rotating plate drives the annular turntable 23 and the tape fixing ring 25, the first half tooth 41 and the second half tooth 42 installed on the rotating plate to rotate around the inner ring 22 of the annular bearing. When the first half tooth 41 rotates to mesh with the gear 39, the tape sticks to one of the side walls of the packaging box, and the upper and lower ends of the packaging box covered by the tape (but not yet stuck), under the cooperation of the first half tooth and the gear, the cam 40 on the side wall of the gear is driven synchronously. The cam 40 rotates, and the convex arc-shaped periphery of the cam contacts the guide head 37 of the lever 32, driving the lever located on one side of the guide head to tilt upward, while the lever located on the blade 36 rotates downward to open. At this time, the tape head is loosened, and the cam 40 rotates while driving the linkage block 56 of the side wall to rotate. The linkage shaft 57 on the linkage block cooperates with the guide hole 55 on the guide plate 54, driving the guide plate and the slide 53 to gradually slide toward one side of the packaging box along the guide rod 52. The slide 53 drives the toggle plate 58, and the toggle groove 59 on the toggle plate cooperates with the tape scraping brush 60. The toggle plate drives the brush rod of the tape scraping brush to rotate toward one side of the packaging box with the rotating pin 61 as the center of the circle, and the tape scraping brush 60 drives the brush head 62 made of soft material on the head to slide across the bottom of the packaging box. , brush the tape head flat and fit it to the bottom of the packaging box. When the brush head completes the first flat brushing and fitting of the tape on the bottom of the packaging box, the annular turntable 23 and the rotating plate 24 drive the first half tooth 41 to pass through the gear 39, the gear and the cam 40 stop rotating, the slide 53 and the tape leveling brush 60 also stop moving, and people continue to drive the rotating plate 24 and the annular turntable 23 to rotate through the handle 26, and the rotating plate drives the tape fixing ring 25 and the tape roll to continue rotating, so that the tape on the tape roll covers the lower end of the packaging box, and the tape sticks to the upper end and the other side wall of the packaging box. When the rotating plate 24 and the annular turntable 23 drive the second half tooth 42 to mesh with the gear 39, the second half tooth drives the gear to continue rotating, and the gear drives the cam 40 to rotate.At this time, the downward vertical surface of the cam (a vertical surface can be formed between the highest position and the lowest position of the convex arc of the cam) cooperates with the guide head 37 of the lever 32. Under the action of the restoring force of the first torsion spring 34, the lever 32 and the blade 36 are driven to quickly reset upward, and the blade cuts the tape. The cut tape head is pressed under the connecting bridge 72 by the lever, and the next packaging and sealing can be carried out. At the same time, the linkage shaft 57 of the linkage block 56 on the cam 40 continues to cooperate with the guide hole 55 of the guide plate 54, driving the guide plate, the slide seat 53, and the toggle plate 58 to slide back. The toggle groove 59 on the toggle plate cooperates with the brush rod of the tape scraping brush 60. The toggle plate drives the brush rod of the tape scraping brush to rotate back with the rotating pin 61 as the center of the circle, so that the brush head 62 slides over the bottom of the packaging box again, brushes the cut tape tail flat and fits it to the bottom of the packaging box, and completes the tape bonding and sealing. In the present invention, the rotating wrap-around tape carton sealing and packaging machine only needs one hand to hold the carton and the other hand to turn the handle 26 to realize the wrapping of the carton with the tape. While sealing the carton, the bottom of the carton is automatically brushed flat for the first time, the tape is cut, and the bottom of the carton is brushed flat for the second time. All actions are in a linkage form, which is convenient and labor-saving to operate, reduces people's labor intensity, improves the sealing efficiency, and the tape is firmly attached to the carton to ensure the sealing effect. In addition, the sizes of the corresponding components such as the fixed seat 1, the inner ring of the annular bearing 22, and the annular turntable 23 can be changed according to needs, which can adapt to different volumes and sizes of carton sealing. As long as the height and width of the carton are smaller than the inner diameter of the inner ring of the annular bearing 22, the carton sealing operation can be performed.

[0037] The present invention is a rotating wrap-around tape box sealing and packaging machine. The rotating plate 24 is provided with an elastic tensioning device for the tape. The elastic tensioning device includes a base 81. One side of the base is fixed to the rotating plate via a fastener. The other side of the base is provided with a central axis 82 and a ring-shaped uniformly distributed limiting groove 83. A tensioning wheel 84 and a pressing plate 85 are sleeved on the central axis. One side of the tensioning wheel is in contact with the base. The tensioning wheel is located on one side of the base and is provided with an arc-shaped convex particle 86. The convex particle cooperates with the limiting groove. The other side of the tensioning wheel is in contact with the pressing plate. The tensioning wheel is located on one side of the pressing plate and is provided with a tensioning wheel. Pin 87, a tape fixing ring 25 is sleeved on the outer ring of the tension wheel 84 and the pressure plate 85, a tape roll is sleeved on the outer wall of the tape fixing ring, a fixing pin 88 is formed on the inner wall of the tape fixing ring, a tension spring 89 is connected between the tension pin and the fixing pin, a plane bearing 90 is sleeved on the outer ring of the central axis 82 on the other side of the pressure plate 85, a screw 91 is formed on the rotating plate 24, the screw passes through the central axis 82 to connect the adjusting nut 92 and the handle 26, a compression spring 93 is sleeved on the outer wall of the screw, one side of the compression spring is in contact with the plane bearing 90, and the other side of the compression spring is in contact with the adjusting nut 92. The tape roll is put on the tape fixing ring 25. When the tape roll and the tape fixing ring follow the annular turntable 23 to rotate and seal the box (it can also be said that the tape roll and the tape fixing ring and the annular turntable 23 make a revolution), the tape is pulled out continuously. In order to ensure that the pulled tape has a sufficient length, the tape roll and the tape fixing ring 25 must also rotate at a certain angle according to the size of the packaging box (it can also be said that the tape roll and the tape fixing ring 25 make a rotation action) so that the length of the pulled tape meets the size of different packaging boxes. In order to avoid the tape roll and the tape fixing ring 25 from rotating randomly and uncontrolled, they can always maintain an elastic tension state. When the tape of the tape roll is pulled out a short distance, the tape roll drives the tape fixing ring 25 to rotate, and the tape fixing ring drives the tension spring 89 to stretch through the fixing pin 88. The other end of the tension spring is connected to the pull pin 87 of the tension wheel 84. Since the tension wheel 84 is subjected to the compression force of the pressure plate 85, the plane bearing 90, the compression spring 93 and the adjusting nut 92, when the tension of the tension spring 89 is greater than the pressure of the compression spring 93, the tape fixing ring 25 drives the tension wheel 84 to rotate through the tension spring, and the convex particles 86 on the side wall of the tension wheel rotate around the annularly uniformly distributed limiting grooves 83 on the base 81. When the tape roll and the tape fixing ring 25 stop rotating, the adjusting nut 92, the compression spring 93, the plane bearing 90 and the pressure plate 85 press the tension wheel 84, and the convex particles 86 on the side wall of the tension wheel are limitedly matched with the limiting grooves 83 on the base 81. The tension wheel pulls the tape fixing ring 25 through the tension spring 89, thereby preventing the tape fixing ring 25 and the tape roll from rotating at will, and can always maintain an elastic tensioned state.

[0038] The rotating plate 24 is provided with a positioning protruding tooth 27, and a positioning clamping tooth 28 is provided on the bracket 21. The positioning clamping tooth matches the positioning protruding tooth, and the positioning clamping tooth is connected to the bracket through a pin. A second torsion spring 29 is provided on the pin, and one end of the second torsion spring contacts the bracket 21, and the other end of the second torsion spring contacts the back of the positioning clamping tooth 28. When the tape roll, the tape fixing ring 25, the rotating plate 24, and the annular turntable 23 rotate one circle to complete the tape box sealing, the positioning protruding tooth 27 on the rotating plate 24 matches the positioning clamping tooth 28 on the bracket 21. Under the action of the elastic force of the second torsion spring 29, the positioning clamping tooth 28 is pushed open and reset by the positioning protruding tooth 27, and a collision sound is emitted, prompting people to rotate to the right position. Under the meshing action of the positioning protruding tooth 27 and the positioning clamping tooth 28, the annular turntable 23 stops at this angle and will not fall back.

[0039] The side wall of one end of the lever 32 is provided with a mounting groove 43, in which a magnet 44 is arranged, and the magnet is attracted to the connecting bridge. The magnet 44 is used to increase the pressing force of the lever 32 on the tape head and the connecting bridge 72, and when the lever is released, when the magnet and the connecting bridge are disengaged, only the elastic force of the first torsion spring 34 is relied on, so that the problem of large resistance is not caused, and the lever is opened smoothly.

[0040] The outer wall of the guide head 37 of the lever 32 is covered with a bearing sleeve 45, and the bearing sleeve cooperates with the cam 40. With the bearing sleeve 45, the guide head and the cam can cooperate more smoothly.

[0041] The mounting plate 71 and the support platform 73 are provided with corresponding slide grooves 74, and a tape push plate 75 is arranged between the mounting plate and the support platform. The two ends of the tape push plate are provided with convex ribs 76, which cooperate with the slide grooves. A spring 78 is arranged between the upper end of the tape push plate and the lower end of the connecting bridge 72, and a concave-convex tooth 77 is provided at the lower end of the tape push plate, which contacts the bonding surface on the tape head. When the lever 32 drives the blade 36 to open downward, the spring 78 pushes the tape push plate 75 downward under the action of elastic force, and the convex ribs 76 at the two ends of the tape push plate slide downward along the slide groove 74, and the concave-convex tooth 77 at the lower end of the tape push plate pushes the tape head downward to prevent the tape head from sticking to the connecting bridge 72, which makes it impossible to perform the subsequent brushing and leveling action of the tape head at the bottom of the packaging box.

[0042] A connecting rod 79 is formed between the mounting plate 71 and the supporting platform 73, and a thread groove is formed on the outer wall of the connecting rod or a spiral rotating ring 80 is sleeved on the outer wall of the connecting rod. By forming a thread groove on the connecting rod 79 or sleeved with a spiral rotating ring 80, it is further prevented that the tape head sticks to the surface, which makes it impossible to perform the subsequent brushing and leveling action of the tape head at the bottom of the packaging box.

[0043] The upper ends of the fixing seat 1 and the supporting platform 73 are respectively provided with corresponding positioning seats 11, and the positioning seats are provided with positioning grooves 12 and upright positioning plates 13. A larger packaging box can be placed on the positioning seat 11, and one end face of the packaging box is positioned and matched with the positioning plate 13. A smaller packaging box can be placed on the fixing seat 1 and the supporting platform 73, and one end face of the packaging box is stuck in the positioning groove 12. Alternatively, the end face of the packaging box can be directly positioned and matched with the side wall of the positioning seat 11. In this way, when winding the tape, the packaging box can be positioned and will not deviate, ensuring that the tape can be wrapped around the box accurately and smoothly.

Claims

1. An automatic tape cutting and releasing device, used in a tape sealing and packaging machine, the tape sealing and packaging machine comprising a fixed seat (1) and a tape full circle winding and rotating device arranged on the fixed seat (1), the tape full circle winding and rotating device drives the tape roll to perform full circle winding and sealing, characterized in that: The automatic tape cutting and releasing device comprises: A fixing plate (31) fixedly arranged relative to the fixing seat (1); A lever (32) is rotatably connected to the fixed plate (31), and a blade (36) is fixedly provided on one side of the lever (32); The lever (32) cooperates with the tape full-circle winding device to rotate to open or reset, so as to avoid or cut off the tape and press the tape head.

2. The automatic tape cutting and releasing device according to claim 1, characterized in that: The invention also comprises a platform bridge structure, wherein the platform bridge structure is fixedly connected to the fixed plate (31), and a connecting bridge (72) is formed on one side of the fixed plate (31), wherein the connecting bridge (72) and the blade (36) are located on the same side of the fixed plate (31), and the lever (32) opens and closes relative to the connecting bridge (72) to avoid or cut the tape and to press the tape head.

3. The automatic tape cutting and releasing device according to claim 2, characterized in that: The platform bridge structure comprises a support platform (73), the support platform (73) is provided with a corresponding positioning seat (11), the positioning seat is provided with a positioning groove (12) and an upright positioning plate (13); and / or The lever (32) is provided with a mounting groove (43), a magnet (44) is arranged in the mounting groove (43), and the magnet (44) can be attracted to the connecting bridge (72) by magnetic force; and / or The platform bridging structure comprises a tape push plate (75) movably arranged relative to the connecting bridge (72), a spring (78) being arranged between the tape push plate (75) and the lower end of the connecting bridge (72), and a concave-convex tooth (77) being formed at the lower end of the tape push plate (75), and the concave-convex tooth is in contact with the bonding surface of the tape head.

4. The automatic tape cutting and releasing device according to claim 2, characterized in that: The platform bridge structure comprises a connecting rod (79), the outer wall of the connecting rod (76) is formed with a thread groove or the outer wall of the connecting rod (79) is sleeved with a rotating ring (80).

5. The automatic tape cutting and releasing device according to claim 4, characterized in that: The rotating circle (80) is spiral-shaped.

6. The automatic tape cutting and releasing device according to claim 1, characterized in that: It also includes a gear (39) rotatably arranged on the fixed plate (31) and a cam (40) that can rotate when the gear (39) rotates, the gear (39) cooperates with the tape full circle winding rotation device, when the tape full circle winding rotation device rotates to a predetermined position, the gear (39) is driven to rotate, and the cam (40) cooperates with the lever (32) to control the lever (32) to rotate open or reset.

7. The automatic tape cutting and releasing device according to claim 6, characterized in that: The lever (32) comprises a guide head (37), wherein the guide head (37) and the blade (36) are respectively located on both sides of the rotation axis of the lever (32), and the guide head (37) is in contact with the cam to control the lever (32) to rotate, open or reset.

8. The automatic tape cutting and releasing device according to claim 7, characterized in that: The guide head (37) and the blade (36) are respectively located on both sides of the fixing plate (31), and the guide head (37) passes through the fixing plate (31) and cooperates with the cam (50).

9. The automatic tape cutting and releasing device according to claim 7, characterized in that: The outer wall of the guide head (37) is sleeved with a bearing sleeve (45), and the bearing sleeve (45) is matched with the cam (40).

10. The automatic tape cutting and releasing device according to claim 7, characterized in that: It also includes a torsion spring (34), one end of which is in contact with the lever and the other end of which is in contact with the fixing plate (31), and is used to reset the lever (32).

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