Adhesive tape cutting device and cutting method

Abstract

The invention discloses a tape cutting device and a cutting method, comprising a plurality of ring bodies arranged in parallel with a mutual spacing, a plurality of driving devices evenly arranged around the ring bodies, and a fixing rod detachably sleeved in the central hole of a long tape roll for fixing the long tape roll; an annular blade with a blade facing the center direction of the ring body is fixedly arranged on the inner circle of the ring body; the driving device comprises a plurality of active telescopic rods; one end of the active telescopic rods is respectively hinged on two ring bodies located at the outermost positions; the plurality of active telescopic rods jointly drive the plurality of ring bodies to swing around the long tape roll and cyclically approach and move away from the long tape roll to cut the long tape roll; the main cutting mode of the device is sliding cutting, so the cutting line of each cutting is continuous, so that the irregularity of the side cutting surface of the tape can be greatly reduced, and the side cutting surface of the tape can be made smoother and more complete, so as to maintain more lateral shear resistance and strength of the tape and make it not easy to break.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesive tapes, and in particular to an adhesive tape cutting device and a cutting method. Background Art

[0002] Adhesive tape is an item composed of a base material and an adhesive. It can connect two or more unconnected objects together through bonding. According to its function, adhesive tape can be divided into high temperature tape, double-sided tape, insulating tape, special tape, pressure-sensitive tape, and die-cut tape. Different functions are suitable for different industry needs.

[0003] During the production process, in order to improve production efficiency, the tape is generally produced and wound in a long cylinder, and then cut into tape rolls of specified sizes at the end. The existing tape is generally cut by a saw blade, which is easy to cause stress concentration on the tape. In the process of saw blade cutting, due to the characteristics of the saw teeth and the elasticity of the tape, each saw tooth produces an impact cut on the tape at the microscopic level, which is a chopping method, such as chopping meat in the kitchen. The impact cutting is not continuous. Since the tape is squeezed, stretched and rebounded during each impact cutting process, a fine concave-convex structure will be generated on the side cutting surface of the tape, which will destroy the integrity of the side cutting surface of the tape and greatly reduce the lateral shear stress of the tape. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a tape cutting device and a cutting method.

[0005] The present invention provides a tape cutting device, comprising a plurality of ring bodies arranged in parallel with a mutual spacing, a plurality of driving devices evenly arranged around the ring bodies, and a fixing rod detachably sleeved in the central hole of a long tape roll for fixing the long tape roll; an annular blade with a blade facing the center direction of the ring body is fixedly arranged on the inner circle of the ring body; the driving device comprises a plurality of active telescopic rods; one end of the active telescopic rods is respectively hinged on two ring bodies located at the outermost positions; the plurality of active telescopic rods jointly drive the plurality of ring bodies to swing around the long tape roll and cyclically approach and move away from the long tape roll to cut the long tape roll.

[0006] Among them, two adjacent ring bodies are fixedly connected by multiple short rods, so that all the ring bodies can move synchronously.

[0007] Among them, a plurality of arc-shaped long strip through holes are opened on the ring body between the two ring bodies; the arc center of the arc-shaped long strip through holes is the same as the circle center of the ring body; a plurality of long rods pass through the arc-shaped long strip through holes in sequence; the two ends of the long rods are respectively hinged to the two outermost ring bodies; the long rods are provided with stop protrusions on both sides of the arc-shaped long strip through holes; the stop protrusions on both sides of the arc-shaped long strip through holes jointly clamp the ring body.

[0008] Among them, the active telescopic rod is a connecting rod, and the other end is hinged in an internal combustion piston; the internal combustion piston sealing sliding sleeve is arranged in an internal combustion cylinder; the internal combustion cylinder is provided with an injection mechanism and an ignition mechanism; a controller controls the injection mechanism and ignition mechanism in each internal combustion cylinder to inject oil and ignite; the internal combustion cylinder is fixed on a frame.

[0009] Among them, the fixed rod includes a rigid rod core and an annular sealing elastic sleeve sleeved on the outer circumference of the rigid rod core; the two ends of the rigid rod core are detachably fixed on the frame; the annular sealing elastic sleeve is filled with electrorheological fluid and electrodes are arranged opposite to each other; an external circuit is controlled by a controller and applies a strong electric field to the electrorheological fluid through the electrodes; one end of the annular sealing elastic sleeve is provided with an openable and closable liquid inlet interface, and the other end is provided with an openable and closable liquid outlet interface.

[0010] Among them, a flexible magnet strip or magnet coating is adhered to the inner wall of the annular sealing elastic sleeve; the annular blade is a magnetic conductor, an electromagnet makes the annular blade magnetic, and the magnetic pole of the annular blade facing the center of the ring body is the same as the magnetic pole of the flexible magnet strip or magnet coating facing the ring body, which repel each other.

[0011] Wherein, the number of the ring bodies is an odd number greater than five.

[0012] Wherein, the number of the arc-shaped long strip through holes on the ring body is three to seven.

[0013] A tape cutting method, using the tape cutting device, comprises the following steps:

[0014] ① Pass the fixing rod through the hollow part in the middle of the long tape roll, and fill the electrorheological fluid into the liquid inlet interface; the electrorheological fluid causes the annular sealing elastic sleeve to swell outward and squeeze the inner circumferential wall of the long tape roll tightly;

[0015] ② Fix the fixing rod with the long tape roll horizontally on the frame, and the long tape roll is located in the center of the multiple rings;

[0016] ③ The electromagnet is energized through the controller, and a strong magnetic field is added to the annular blade, and the opposite magnetic poles of the flexible magnet strip or magnet coating on the inner wall of the annular sealing elastic sleeve are the same, generating repulsion, so that the annular sealing elastic sleeve part corresponding to each annular blade is concave inward under the repulsive force to form an annular groove for avoiding the annular blade during the cutting process;

[0017] ④ The controller makes the external circuit apply a strong electric field to the electrorheological fluid through the electrodes, and the electrorheological fluid is instantly converted into a solid state, forming a fixing part of the rigid rod core and the long tape roll, and keeping the shape of the annular groove; the controller turns off the power of the electromagnet;

[0018] ⑤ The controller controls the movement of each internal combustion piston by controlling the injection mechanism and the ignition mechanism, so that each active telescopic rod drives each ring body to swing quickly and cut the long tape roll;

[0019] ⑥ After the cutting is completed, the controller controls the external circuit to disconnect, the electrorheological fluid loses the electric field and instantly turns into liquid, part of the electrorheological fluid flows out from the liquid outlet interface to release the pressure, and the long tape roll that has been cut into multiple rolls is removed from the fixed rod.

[0020] The beneficial effects of the present invention are:

[0021] 1. The tape cutting device of the present invention adopts parallel and parallel ring bodies and annular blades arranged on the inner ring of the ring body, and is driven by a plurality of connecting rod devices distributed in an annular manner. The entire long tape roll can be cut into a plurality of formed tape rolls at the same time, and the cutting method is swing sliding cutting. Each cutting point is different, and a relatively uniform cutting line is formed along the outer circumference of the tape roll. As the number of cutting times increases, the cutting lines are connected into one and gradually deepen, and the cutting process is finally completed. Compared with the existing method of cutting with a saw blade, it is easy to produce stress concentration on the tape, and in the process of saw blade cutting, due to the characteristics of the saw teeth and the elasticity of the tape, each saw tooth produces impact cutting on the tape at the microscopic level, that is, The impact cutting method is used, such as chopping meat in the kitchen. The impact cutting is not continuous. Since the tape is squeezed, stretched and rebounded during each impact cutting process, the side cutting surface of the tape will produce fine concave and convex structures, which will destroy the integrity of the side cutting surface of the tape and greatly reduce the lateral shear stress of the tape. The structure and cutting method of the tape cutting equipment are to use the annular blade with a continuous blade edge to produce swing cutting. The main cutting method is sliding cutting. Therefore, the cutting line of each cutting is continuous. Therefore, the irregularity of the side cutting surface of the tape can be greatly reduced, making the side cutting surface of the tape smoother and more complete, thereby maintaining the lateral shear resistance and strength of the tape and making it less likely to break.

[0022] 2. The present invention combines a rigid rod core with an annular sealing elastic sleeve and utilizes an electrorheological fluid filling method. It only needs to adjust the amount of electrorheological fluid to be suitable for long tape tubes with different tube core sizes. At the same time, the solid-liquid conversion characteristics of the electrorheological fluid are utilized. After the electrorheological fluid is pressurized and filled to make the annular sealing elastic sleeve fit the tape tube core completely, the electrorheological fluid is converted into a solid state by an electric field, thereby realizing the fixation and linkage rotation of the long tape tube. In this process, flexibility is combined with rigidity, so that the contact between the annular sealing elastic sleeve and the tape tube core is very uniform, which can ensure that the force on the tape tube is very uniform during the fixation or linkage process, and is not easily deformed, and can ensure accurate and stable positioning, thereby ensuring the smoothness and dimensional accuracy of the cutting surface.

[0023] 3. The present invention utilizes the liquid state of the electrorheological fluid when no electric field is applied and the deformable characteristics of the annular sealing elastic sleeve, utilizes flexible magnet strips or magnet coatings and makes the annular blade magnetic, and utilizes the principle of like poles repelling each other, so that the annular sealing elastic sleeve at the corresponding position of the annular blade is automatically recessed to form an annular groove, and the shape of the annular groove is solidified after the electrorheological fluid is converted into a solid and under the joint action of the external atmospheric pressure, and the position of the annular groove just corresponds to the annular blade, so at the end of cutting, when the annular blade cuts off the tape roll, due to the giving way effect of the annular groove, the annular blade will not damage the annular sealing elastic sleeve; since the cutting equipment has high precision and stable operation, the annular groove only needs to have a low depth to meet the giving way requirement; therefore, the design of the fixing rod can not only adapt to the fixing of tape rolls of different sizes, but also has a large and uniform contact area, and can also combine flexibility and rigidity to facilitate the disassembly and assembly and stability of the tape roll, and can also automatically provide a giving way space for the annular blade without the need for advance design or adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic side view of the structure and state of the tape cutting device of the present invention in a static state;

[0025] Figure 2 It is a schematic side view of the structure and state of the tape cutting device of the present invention during swing cutting;

[0026] Figure 3 It is a schematic diagram of the radial side structure of the tape cutting device of the present invention;

[0027] Figure 4 This is a schematic diagram of the axial structure of the ring body connected by a long rod in the present invention;

[0028] Figure 5 This is a schematic radial cross-sectional view of a ring body connected by a long rod according to the present invention;

[0029] Figure 6 This is a schematic radial cross-sectional view of a ring body connected by short rods according to the present invention;

[0030] Figure 7 It is a schematic structural diagram of the annular sealing elastic sleeve of the present invention.

[0031] In the figure: 10, ring body; 101, annular blade; 102, arc-shaped long strip through hole; 103, long rod; 104, short rod; 105, annular groove; 20, driving device; 201, active telescopic rod; 202, internal combustion piston; 203, internal combustion cylinder; 30, long tape reel; 40, fixed rod; 401, rigid rod core; 402, annular sealing elastic sleeve; 403, electrorheological fluid; 404, electrode; 405, flexible magnet strip or magnet coating. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] See also Figures 1 to 7 A tape cutting device comprises a plurality of ring bodies 10 arranged in parallel with a mutual spacing, a plurality of driving devices 20 evenly arranged around the ring bodies 10, and a fixing rod 40 detachably sleeved in the central hole of a long tape roll 30 for fixing the long tape roll 30; an annular blade 101 with a blade facing the center direction of the ring body 10 is fixedly arranged on the inner circle of the ring body 10; the driving device 20 comprises a plurality of active telescopic rods 201; one end of the active telescopic rods 201 is respectively hinged on the two outermost ring bodies 10; the plurality of active telescopic rods 201 jointly drive the plurality of ring bodies 10 to swing around the long tape roll 30 and cyclically approach and move away from the long tape roll 30, so as to cut the long tape roll 30.

[0034] Furthermore, two adjacent ring bodies 10 are fixedly connected by a plurality of short rods 104 so that all the ring bodies 10 can move synchronously.

[0035] Furthermore, a plurality of arc-shaped long strip through holes 102 are provided on the ring body 10 between the two ring bodies 10; the arc center of the arc-shaped long strip through hole 102 is the same as the circle center of the ring body 10; a plurality of long rods 103 pass through the arc-shaped long strip through holes 102 in sequence; the two ends of the long rods 103 are respectively hinged to the two outermost ring bodies 10; the long rods 103 are provided with stop protrusions on both sides of the arc-shaped long strip through hole 102; the stop protrusions on both sides of the arc-shaped long strip through hole 102 jointly clamp the ring body 10.

[0036] Furthermore, the active telescopic rod 201 is a connecting rod, the other end of which is hinged in an internal combustion piston 202; the internal combustion piston 202 is sealed and slidably sleeved in an internal combustion cylinder 203; an injection mechanism and an ignition mechanism are provided in the internal combustion cylinder 203; a controller controls the injection mechanism and ignition mechanism in each internal combustion cylinder 203 to spray and ignite; and the internal combustion cylinder 203 is fixed on a frame.

[0037] Furthermore, the fixed rod 40 includes a rigid rod core 401 and an annular sealing elastic sleeve 402 sleeved on the outer circumference of the rigid rod core 401; the two ends of the rigid rod core 401 are detachably fixed to the frame; the annular sealing elastic sleeve 402 is filled with electrorheological fluid 403 and electrodes 404 are arranged opposite to each other; an external circuit is controlled by a controller and applies a strong electric field to the electrorheological fluid 403 through the electrodes 404; one end of the annular sealing elastic sleeve 402 is provided with an openable and closable liquid inlet interface, and the other end is provided with an openable and closable liquid outlet interface.

[0038] Furthermore, a flexible magnet strip or magnet coating 405 is adhered to the inner wall of the annular sealing elastic sleeve 402; the annular blade 101 is a magnetic conductor, an electromagnet makes the annular blade 101 magnetic, and the magnetic pole of the annular blade 101 facing the center of the ring body 10 is the same as the magnetic pole of the flexible magnet strip or magnet coating 405 facing the ring body 10, which repel each other.

[0039] Furthermore, the number of the ring bodies 10 is an odd number greater than five.

[0040] Furthermore, the number of the arc-shaped long strip through holes 102 on the ring body 10 is three to seven.

[0041] A tape cutting method, using the tape cutting device, comprises the following steps:

[0042] ① Pass the fixing rod 40 through the hollow part in the middle of the long tape roll 30, and fill the electrorheological fluid 403 into the liquid inlet interface; the electrorheological fluid 403 causes the annular sealing elastic sleeve 402 to swell outward and tightly squeeze the inner circumferential wall of the long tape roll 30;

[0043] ② Fix the fixing rod 40 with the long tape roll 30 horizontally on the frame, and the long tape roll 30 is located at the center of the multiple ring bodies 10;

[0044] ③ The electromagnet is energized by the controller, and a strong magnetic field is added to the annular blade 101, and the opposite magnetic poles of the flexible magnet strip or magnet coating 405 on the inner wall of the annular sealing elastic sleeve 402 are the same, generating repulsion, so that the part of the annular sealing elastic sleeve 402 corresponding to each annular blade 101 is concave inward under the repulsive force to form an annular groove 105 for avoiding the annular blade 101 during the cutting process;

[0045] ④ The controller causes the external circuit to apply a strong electric field to the electrorheological fluid 403 through the electrode 404, and the electrorheological fluid 403 is instantly converted into a solid state, forming a fixing member for the rigid rod core 401 and the long tape roll 30, and keeping the annular groove 105 in shape; the controller turns off the power to the electromagnet;

[0046] ⑤ The controller controls the movement of each internal combustion piston 202 by controlling the injection mechanism and the ignition mechanism, thereby making each active telescopic rod 201 jointly drive each ring body 10 to quickly swing and cut the long tape roll 30;

[0047] ⑥ After the cutting is completed, the controller controls the external circuit to be disconnected, the electrorheological fluid 403 loses the electric field and instantly turns into liquid, and part of the electrorheological fluid flows out from the liquid outlet interface to release the pressure, and the long tape roll 30 that has been cut into multiple rolls is removed from the fixed rod 40.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tape cutting device, characterized in that: The invention comprises a plurality of ring bodies (10) arranged in parallel with each other at a distance, a plurality of driving devices (20) evenly arranged around the ring bodies (10), and a fixing rod (40) detachably sleeved in the center hole of a long adhesive tape roll (30) for fixing the long adhesive tape roll (30); an annular blade (101) with a blade facing the center direction of the ring body (10) is fixedly arranged on the inner circle of the ring body (10); the driving device (20) comprises a plurality of active telescopic rods (201); one end of the active telescopic rods (201) is respectively hinged on two ring bodies (10) located at the outermost positions; the plurality of active telescopic rods (201) jointly drive the plurality of ring bodies (10) to wind the long adhesive tape roll (30) and circulate close to each other. The fixed rod (40) is swung away from the long tape roll (30) to cut the long tape roll (30); the fixed rod (40) comprises a rigid rod core (401) and an annular sealing elastic sleeve (402) sleeved on the outer circumference of the rigid rod core (401); the two ends of the rigid rod core (401) are detachably fixed to the frame; the annular sealing elastic sleeve (402) is filled with electrorheological fluid (403) and electrodes (404) are arranged opposite to each other; an external circuit is controlled by a controller and applies a strong electric field to the electrorheological fluid (403) through the electrodes (404); one end of the annular sealing elastic sleeve (402) is provided with an openable and closable liquid inlet interface, and the other end is provided with an openable and closable liquid outlet interface.

2. The tape cutting device according to claim 1, characterized in that: Two adjacent ring bodies (10) are fixedly connected via a plurality of short rods (104), so that all the ring bodies (10) move synchronously.

3. The tape cutting device according to claim 1, characterized in that: A plurality of arc-shaped long strip through holes (102) are provided on the ring body (10) between the two ring bodies (10); the arc center of the arc-shaped long strip through holes (102) is the same as the circle center of the ring body (10); a plurality of long rods (103) pass through the arc-shaped long strip through holes (102) in sequence; the two ends of the long rods (103) are respectively hinged to the two outermost ring bodies (10); the long rods (103) are provided with stop protrusions on both sides of the arc-shaped long strip through holes (102); the stop protrusions on both sides of the arc-shaped long strip through holes (102) jointly clamp the ring body (10).

4. The tape cutting device according to claim 1, characterized in that: The active telescopic rod (201) is a connecting rod, the other end of which is hinged in an internal combustion piston (202); the internal combustion piston (202) is sealed and slidably sleeved in an internal combustion cylinder (203); an injection mechanism and an ignition mechanism are arranged in the internal combustion cylinder (203); a controller controls the injection mechanism and the ignition mechanism in each internal combustion cylinder (203) to inject oil and ignite; and the internal combustion cylinder (203) is fixed on a frame.

5. The tape cutting device according to claim 3, characterized in that: A flexible magnet strip or magnet coating (405) is adhered to the inner wall of the annular sealing elastic sleeve (402); the annular blade (101) is a magnetic conductor, an electromagnet makes the annular blade (101) magnetic, and the magnetic pole of the annular blade (101) facing the center of the ring body (10) is the same as the magnetic pole of the flexible magnet strip or magnet coating (405) facing the ring body (10), so they repel each other.

6. The tape cutting device according to claim 1, characterized in that: The number of the ring bodies (10) is an odd number greater than five.

7. The tape cutting device according to claim 3, characterized in that: The number of the arc-shaped long strip through holes (102) on the ring body (10) is three to seven.

8. A tape cutting method, using the tape cutting device as claimed in claim 5, comprising the following steps: ① Pass the fixing rod (40) through the hollow part in the middle of the long adhesive tape roll (30), and fill the electrorheological fluid (403) into the liquid inlet interface; the electrorheological fluid (403) causes the annular sealing elastic sleeve (402) to swell outward and tightly press against the inner circumferential wall of the long adhesive tape roll (30); ② Fix the fixing rod (40) with the long tape roll (30) horizontally on the frame, and the long tape roll (30) is located at the center of the plurality of ring bodies (10); ③ The electromagnet is energized by the controller, and a strong magnetic field is applied to the annular blade (101), and the magnetic poles of the opposite surfaces of the flexible magnetic strip or magnetic coating (405) on the inner wall of the annular sealing elastic sleeve (402) are the same, generating repulsion, so that the portion of the annular sealing elastic sleeve (402) corresponding to each annular blade (101) is recessed inward under the repulsive force to form an annular groove (105) for avoiding the annular blade (101) during the cutting process; ④ The controller causes the external circuit to apply a strong electric field to the electrorheological fluid (403) through the electrode (404), and the electrorheological fluid (403) is instantly converted into a solid state to form a fixing member for the rigid rod core (401) and the long tape roll (30), and the annular groove (105) maintains its shape; the controller turns off the power to the electromagnet; ⑤ The controller controls the movement of each internal combustion piston (202) by controlling the oil injection mechanism and the ignition mechanism, thereby causing each active telescopic rod (201) to jointly drive each ring body (10) to jointly swing rapidly to cut the long adhesive tape roll (30); ⑥ After the cutting is completed, the controller controls the external circuit to be disconnected, the electrorheological fluid (403) loses the electric field and instantly turns into liquid, and part of the electrorheological fluid flows out from the liquid outlet interface to release the pressure, and the long tape roll (30) that has been cut into multiple rolls is removed from the fixing rod (40).

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