Curved surface adhesive tape attaching method and attaching apparatus

Abstract

This invention discloses a method for applying adhesive tape to curved surfaces, comprising at least the following steps: preparing the tape: cutting the tape to a preset length, and moving the tape to the tangent position of the curved surface using a clamping component; primary bonding: pressing the tape firmly onto the curved surface using a pressing component, releasing the clamp on the first end of the tape and driving the curved surface to rotate from the initial position by a first preset angle, bonding the tape between the first end and the contact point to the curved surface, and then rotating the curved surface back to the initial position; secondary bonding: releasing the clamp on the second end of the tape and driving the curved surface to rotate from the initial position by a second preset angle, bonding the tape between the second end and the contact point to the curved surface, and then rotating the curved surface back to the initial position. This invention moves the tape to contact the curved surface using a clamping component and presses the tape firmly onto the curved surface, then achieves two-stage bonding of the tape on the curved surface through the reciprocating oscillation of the curved surface, resulting in a high degree of automation and good consistency. This invention also provides a device for applying adhesive tape to curved surfaces.

Description

Technical Field

[0001] This invention relates to the field of curved surface adhesive tape technology, and in particular to a method and equipment for applying curved surface adhesive tape. Background Technology

[0002] In the manufacturing process, it is often necessary to apply tape to various curved surfaces such as cylindrical and arc surfaces for product packaging. However, it is more difficult to ensure the flatness of tape application on curved surfaces than on flat surfaces. Current technology often involves manual operation for applying tape to curved surfaces. However, manual operation is not only inefficient, but also results in significant differences in the flatness of tape application due to the varying skill levels of operators, which affects the aesthetics of products in the same batch.

[0003] Therefore, how to improve the consistency of tape application on curved surfaces and increase application efficiency is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method for applying tape to curved surfaces, so as to improve the consistency of tape application on curved surfaces and improve the application efficiency.

[0005] Another object of the present invention is to provide a curved surface tape application device suitable for the above-described application method.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for applying curved adhesive tape includes at least the following steps:

[0008] Prepare the tape: Cut the tape to a preset length, clamp both ends of the tape using a movable clamping component, and move the tape with its adhesive surface facing the surface to be bonded to the tangent position of the surface.

[0009] One-time bonding: The tape is pressed to the curved surface by the pressing component, the clamping of the first end of the tape is released and the curved surface is driven from the initial position to rotate a first preset angle away from the first end of the contact point between the curved surface and the tape, and the tape area between the first end and the contact point is pasted to the curved surface. Then the curved surface is rotated back to the initial position.

[0010] Secondary bonding: Release the clamp on the second end of the tape and drive the curved surface from the initial position to rotate it by a second preset angle in the direction away from the second end of the contact point, so as to stick the tape area between the second end and the contact point to the curved surface, and then rotate the curved surface back to the initial position.

[0011] Preferably, in the above-described curved tape application method, the contact point is located at the midpoint of the tape, and the first preset angle is equal to the second preset angle.

[0012] Preferably, in the above-described method for applying curved adhesive tape, the arc length corresponding to the first preset angle is not less than the length between the first end and the contact point, and the arc length corresponding to the second preset angle is not less than the length between the second end and the contact point.

[0013] Preferably, the above-described method for applying curved surface tape further includes the step of:

[0014] Clamping component return to position: After the secondary bonding step is completed, the clamping component moves to the cutting position of the tape while keeping both ends open, and clamps the tape of a preset length from both ends again before the next cutting action.

[0015] A bonding device for bonding curved surface tape using the curved surface tape bonding method provided in any of the above embodiments, comprising:

[0016] The clamping part includes a first clamp and a second clamp, and the opening and closing actions and movement positions of the first clamp and the second clamp are independently controlled.

[0017] The cutting part is used to cut the tape so that the clamping part clamps the tape of the preset length and moves it to the tangent position of the curved surface;

[0018] The pressure application section includes a pressure roller and a tensioner, wherein the pressure roller is rotatably disposed and the tensioner is used to press the pressure roller against the curved surface;

[0019] The feeding unit includes a rotating seat for placing the tape and driving the tape to be output to the cutting unit by rotation.

[0020] Preferably, in the above-mentioned adhesive applicator, the feeding unit further includes an alarm device for detecting the usage status of the tape on the rotating seat, the alarm device issuing an alarm signal when the tape needs to be replaced.

[0021] Preferably, in the above-mentioned adhesive device, the alarm device detects the diameter of the tape on the rotating seat using a visual sensor or a through-beam sensor, and alarms when the diameter reaches a preset size to prompt the replacement of the tape.

[0022] Preferably, in the above-mentioned adhesive device, the alarm signal is a light signal emitted by a flashlight or an sound signal emitted by a buzzer.

[0023] Preferably, in the above-mentioned adhesive device, the feeding section further includes an assist wheel and a retainer, the output end of the tape on the rotating seat is attached to the outer circumference of the assist wheel and is tightened by the retainer, and the assist wheel is rotated to assist the tape output.

[0024] Preferably, in the above-mentioned pasting device, the first gripper is connected to a motor, and the motor is used to drive the position adjustment and opening and closing of the first gripper.

[0025] As can be seen from the above technical solution, the curved surface tape bonding method provided by the present invention includes at least the following steps: preparing tape, primary bonding, and secondary bonding. Specifically, the tape preparation step involves cutting a tape of a preset length, clamping both ends of the tape using a movable clamping component, and moving the tape with its bonding surface facing the curved surface to the tangent position of the curved surface. The preset length can be adjusted according to the bonding requirements of the curved surface. Simultaneously, the clamping component maintains the shape of the tape by clamping both ends of the preset length tape, preventing tape entanglement and failure. Moving the tape to the tangent position of the curved surface ensures that the tape only contacts the curved surface at a single point. By controlling the position of this single point of contact, the consistency of bonding of tapes from the same batch can be ensured. The primary bonding step involves pressing the tape tightly onto the curved surface using a pressing component, releasing the clamp on the first end of the tape, and driving the curved surface from its initial position to rotate it away from the first end, starting from the initial position. At a preset angle, the tape area between the first end and the contact point is adhered to the curved surface. Then, the curved surface is rotated back to its initial position. It should be noted that the pressing component here presses the tape onto the curved surface from the contact point. When the clamp on the first end of the tape is released and the curved surface is driven to rotate, the area of ​​the tape from the contact point to the second end remains taut. The area from the contact point to the first end will be sequentially adhered to the surface of the curved surface due to the rotation of the curved surface and pressed by the pressing component. The second bonding step is as follows: the clamp on the second end of the tape is released and the curved surface is driven to rotate from the initial position at a second preset angle in the direction away from the second end. The tape area between the second end and the contact point is adhered to the curved surface. Then, the curved surface is rotated back to its initial position. The second bonding step is the opposite of the bonding step in the first bonding step. After bonding, the curved surface is rotated back to its initial position for subsequent transportation. The curved surface tape application method provided by this invention first cuts the tape to a preset length and moves it to the tangent position of the curved surface to be bonded using a clamping component. Then, the tape is pressed onto the curved surface using a pressing component. Subsequently, the clamps at both ends of the tape are released in stages. By rotating the curved surface in both clockwise and counterclockwise directions, the tape is applied to the curved surface in two segments. Compared with a single application method, this segmented application method from the middle of the tape to both ends improves the shape and consistency of the tape application. At the same time, the above application process is highly automated, which can significantly reduce human error and improve the consistency and efficiency of the application. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram showing the state of the tape when it is located at the tangent of a curved surface, as provided in an embodiment of the invention;

[0028] Figure 2 A schematic diagram of the adhesive device structure provided for an embodiment of the invention;

[0029] Figure 3 for Figure 2 The rear view;

[0030] Figure 4 This is a schematic diagram of the process of transferring adhesive tape between the fixture and the clamping part according to an embodiment of the present invention;

[0031] Wherein, 10 is the clamping part, 110 is the first gripper, 120 is the second gripper, 20 is the cutting part, 30 is the pressing part, 310 is the pressing roller, 320 is the tensioner, 40 is the feeding part, 410 is the rotating seat, 420 is the alarm device, 430 is the assisting wheel, 440 is the fixing device, 50 is the tape, 510 is the first end, 520 is the second end, and 530 is the contact point. Detailed Implementation

[0032] The core of this invention is to disclose a method for applying tape to curved surfaces, so as to improve the consistency of tape application on curved surfaces and increase the application efficiency.

[0033] Another key aspect of this invention is to provide a curved surface tape application device suitable for the above-mentioned application method.

[0034] To enable those skilled in the art to better understand the present invention, embodiments of the present invention will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete content of the configurations represented in the following embodiments is not limited to those necessary for the solution of the invention as described in the claims.

[0035] like Figure 1 As shown, the curved surface tape application method provided in this embodiment of the invention includes at least the following steps:

[0036] S01: Prepare tape: Cut tape 50 to a preset length, clamp both ends of tape 50 with movable clamping components, and move tape 50 with its adhesive surface facing the surface to be bonded to the tangent position of the surface.

[0037] It should be noted that in step S01, the preset length is set by the operator according to the length of the tape 50 required for bonding the corresponding curved surface. The controller controls the cutting component to cut the tape 50 of the corresponding length according to the set value. At the same time, the clamping component clamps both ends of the tape 50 of the preset length to keep the tape 50 taut, thereby preventing the tape 50 from tangling and failing.

[0038] It should be further explained that moving the tape 50 to the tangent position of the curved surface ensures that the tape 50 only makes single-point contact with the curved surface. By controlling the position of the tape 50 making single-point contact with the curved surface, it can be ensured that the curved surfaces of the same batch that need to be covered with the tape 50 are all in contact with the tape 50 at the same position, thereby improving the consistency of the tape 50 bonding.

[0039] S02: One-time bonding: The tape 50 is pressed onto the curved surface by the pressing component, the clamping of the first end 510 of the tape 50 is released and the curved surface is driven from the initial position to rotate a first preset angle away from the first end 510 at the contact point 530 between the curved surface and the tape 50, so as to stick the area of ​​the tape 50 between the first end 510 and the contact point 530 onto the curved surface, and then the curved surface is rotated back to the initial position.

[0040] It should be noted that in step S02, the pressing action of the pressing component on the tape 50 is as follows: after the tape 50 moves to the tangent position of the curved surface, the pressing component presses the tape 50 onto the curved surface from the contact position between the tape 50 and the curved surface. After releasing the clamping of the first end 510 of the tape 50, the curved surface is rotated from the initial position in a direction away from the first end 510 at the contact point 530 between the curved surface and the tape 50. At this time, the area on the tape 50 between the contact point 530 and the second end 520 will still maintain a stable taut state, while the area between the contact point 530 and the first end 510 will be sequentially bonded to the surface of the curved surface due to the rotation of the curved surface and will be pressed by the pressing component in sequence. The curved surface rotates back to the initial position after rotating the first preset angle to facilitate the subsequent bonding steps.

[0041] S03: Secondary bonding: Loosen the clamping of the second end 520 of the tape 50 and drive the curved surface from the initial position to rotate it at a second preset angle in the direction of the contact point 530 away from the second end 520, and stick the area of ​​the tape 50 between the second end 520 and the contact point 530 to the curved surface, and then rotate the curved surface back to the initial position.

[0042] It should be noted that step S03 is essentially a rotational bonding step that is opposite to the direction of surface rotation in S02. At the same time, after bonding, the surface rotates back to its initial position for subsequent transportation and other processes.

[0043] In summary, the curved surface tape pasting method provided in this embodiment of the invention essentially involves pre-cutting and moving the tape 50, and then, through the oscillation of the curved surface, bonding and fixing the tape 50 of a preset length to the surface of the curved surface in two stages under the action of the pressing component. The bonding process is highly automated, improving efficiency compared to manual operation, and also improving the consistency of tape 50 bonding on the same batch of curved surfaces compared to single bonding.

[0044] The curved surface tape pasting method provided in this embodiment of the invention first cuts the tape 50 to a preset length and moves it to the tangent position of the curved surface to be pasted by a clamping component. Then, the tape 50 is pressed onto the curved surface by a pressing component. After that, the clamps at both ends of the tape 50 are released in stages. By rotating the curved surface in both clockwise and counterclockwise directions, the tape 50 is pasted onto the curved surface in two segments. Compared with the single pasting method, the segmented pasting method from the middle of the tape 50 to both ends can improve the good shape and consistency of the tape 50 pasted. At the same time, the above pasting process has a high degree of automation, which can significantly reduce the error of human operation and improve the consistency and efficiency of pasting.

[0045] Furthermore, the contact point 530 between the curved surface and the tape 50 can be located at any position between the two ends of the tape 50. In order to further reduce the bonding error between steps S01 and S02, in a preferred embodiment of the present invention, the contact point 530 is located at the midpoint of the tape 50 of a preset length, and the first preset angle and the second preset angle are equal, so that the bonding length of the tape 50 in steps S01 and S02 is equal. The uniform bonding in both directions can avoid the tape 50 from being severely skewed due to the bonding length on one side being too long.

[0046] Furthermore, in order to improve the bonding efficiency while ensuring the adhesive tape bonding effect and avoid excessive travel due to excessive rotation angle of the curved surface, in a specific embodiment of the present invention, the arc length corresponding to the first preset angle is equal to the length between the first end 510 and the contact point 530, so as to ensure that in step S02, when the curved surface rotates to the point where the first end 510 of the adhesive tape 50 is just pasted on the curved surface, it rotates back to the initial position in the opposite direction. Similarly, the arc length corresponding to the second preset angle is equal to the length between the second end 520 and the contact point 530, so as to ensure that the rotation travel of the curved surface just meets the bonding of the adhesive tape 50.

[0047] Furthermore, the curved surface tape application method provided in this embodiment of the invention also includes the following steps:

[0048] S04: Clamping component return to position: After the secondary bonding step is completed, the clamping component is moved to the cutting position of the tape 50 while keeping both ends open, and the tape 50 of the preset length is clamped again from both ends before the next cutting action.

[0049] It should be noted that after the clamping component moves to the cutting position of the tape 50 while keeping both ends open, it can be prepared to perform subsequent clamping and transfer actions of the tape 50. Steps S01-S04 are repeated to perform multiple tape 50 pasting actions.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of the invention also provides a curved surface tape pasting device. This pasting device is applicable to pasting tape onto curved surfaces using the curved surface tape pasting method provided in any of the above embodiments. Specifically, the pasting device provided in this embodiment of the invention includes a clamping part 10, a cutting part 20, a pressing part 30, and a feeding part 40. The clamping part 10 includes a first gripper 110 and a second gripper 120. It should be noted that the opening and closing actions of the first gripper 110 and the second gripper 120 and their respective movement positions are independently controlled, so that the first gripper 110 and the second gripper 120 can be adjusted according to the curved surface. The adhesive tape 50 of different lengths is clamped to meet the requirement of stepwise release of the clamping at both ends of the adhesive tape 50 in any of the above embodiments. The cutting part 20 is used to cut the adhesive tape 50 so that the tape 50 of the preset length is clamped and driven by the clamping part 10. It should be noted that the cutting part 20 cuts the tape 50 after the clamping part 10 has finished clamping, so as to ensure that the tape 50 is taut by the clamping part 10 after cutting, and to prevent the tape 50 from losing clamping and loosening. The specific cutting structure can be a single-sided cutter or a double-sided shearing structure, which is the same as the prior art and will not be described in detail here.

[0051] The pressing section 30 includes a pressing roller 310 and a tensioner 320. The pressing roller 310 is a rotatably mounted cylindrical roller or roller body, while the tensioner 320 is used to press the pressing roller 310 against the curved surface, so that the tension drives the pressing roller 310 to press the tape 50 tightly against the curved surface. At the same time, the pressing roller 310 rotates synchronously during the rotation of the curved surface to press the tape 50 sequentially. It should be noted that the tensioner 320 is preferably a tension device with adjustable tension, so that different tension levels can be selected according to the type of tape 50. In a specific embodiment of the present invention, the tensioner 320 is a spring, and the spring is in a compressed state when the pressing roller 310 contacts the curved surface. At the same time, when it is necessary to change the tension, the spring length can be changed to adjust the spring compression.

[0052] The feeding section 40 is used to place the tape 50 and ensure the output of the tape 50 stably and continuously. Specifically, the feeding section 40 includes a rotating seat 410, which is used to place the tape 50 and drive the tape 50 to the cutting section 20 for cutting by rotating it.

[0053] To further optimize the above technical solution and avoid interruption of the pasting process due to operators not replacing the tape 50 in time, in a specific embodiment of the present invention, the feeding unit 40 further includes an alarm 420. The alarm 420 is used to detect the usage status of the tape 50 on the rotating seat 410 and to issue an alarm signal when the tape 50 needs to be replaced.

[0054] Based on the above embodiments, the alarm 420 can be a visual sensor, which collects visual information of the tape 50 on the rotating seat 410 and determines the diameter of the remaining tape 50 so as to sound an alarm when the diameter reaches a preset size. The alarm 420 can also be a through-beam sensor, specifically, the transmitter and receiver of the through-beam sensor are set at the tangent position of the preset diameter of the tape 50. When there is enough tape 50, the receiver cannot receive the signal transmitted by the transmitter. When the tape 50 is consumed to the preset diameter, the tape 50 blocking the transmitter and receiver is consumed, and the receiver receives the signal transmitted by the transmitter, thereby issuing an alarm signal.

[0055] Furthermore, the preferred alarm signal is one that is easy for operators to spot and identify, such as a flashing signal emitted by a strobe light or an audible signal emitted by a buzzer.

[0056] To further optimize the above technical solution, in a specific embodiment of the present invention, the feeding unit 40 further includes an assist wheel 430 and a retainer 440. The output end of the tape 50 on the rotating seat 410 is attached to the outer periphery of the assist wheel 430 and is tightened by the retainer 440 so that the tape 50 remains taut during the output process and avoids the tape 50 from tangling. At the same time, during the process of the rotating seat 410 rotating to output the tape 50, the assist wheel 430 is rotated to assist the tape 50 in output, thereby keeping the tape 50 taut and outputting smoothly.

[0057] Based on the above embodiments, such as Figure 4As shown, the retainer 440 includes a pair of clamping jaws. Specifically, the retainer 440 clamps the tape 50 with the jaws to tighten the tape 50. After the tape 50 is rotated out from the rotating seat 410, the retainer 440 pre-clamps a preset length of tape 50 with the jaws to ensure that the preset length of tape 50 is taut. In particular, the retainer 440 only clamps a portion of the tape 50 in the width direction, preferably a half-section. After the retainer 440 completes the pre-clamping... After the tape 50 of a predetermined length is clamped, the first jaw 110 and the second jaw 120 will move in coordination to clamp the other half of the tape 50 of the predetermined length that is tightened by the retainer 440, so as to realize the transfer action of the tape 50 in the tightened state. After the first jaw 110 and the second jaw 120 have completed clamping, the retainer 440 will release to carry out the subsequent tightening action of the tape 50. The first jaw 110 and the second jaw 120 clamp and transfer the tape 50 of the predetermined length to the cutting position for cutting.

[0058] It should be noted that the above structure enables the transfer of tape 50 of a preset length in a taut state, avoiding the problem of tape 50 becoming entangled and failing when clamped by the first gripper 110 and the second gripper 120.

[0059] Furthermore, the first gripper 110 is connected to a motor for driving the position adjustment and opening and closing of the first gripper 110. The motor is controlled by the controller to make the first gripper 110 clamp the tape 50 at the tape 50 cutting position, and after the tape 50 is cut, it moves to the curved side where the tape needs to be pasted, and when the tape 50 between the first gripper 110 and the contact point 530 needs to be pasted, the first gripper 110 is controlled to release.

[0060] It should be noted that the second gripper 120 is driven in the same way as the first gripper 110, and is also driven by the motor controlled by the controller.

[0061] The terms "first," "second," "left side," and "right side," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for applying curved surface tape, characterized in that, At least the following steps are included: Prepare the tape: Cut a tape (50) to a preset length, clamp both ends of the tape (50) with a movable clamping component, and move the tape (50) with its adhesive surface facing the surface to be bonded to the tangent position of the surface. One-time bonding: The tape (50) is pressed to the curved surface by the pressing component, the clamping of the first end (510) of the tape (50) is released and the curved surface is driven from the initial position to rotate a first preset angle away from the first end (510) at the contact point (530) between the curved surface and the tape (50), so that the area of ​​the tape (50) between the first end (510) and the contact point (530) is pasted to the curved surface, and then the curved surface is rotated back to the initial position; Secondary bonding: Loosen the clamping of the second end (520) of the tape (50) and drive the curved surface from the initial position to rotate it at a second preset angle away from the second end (520) at the contact point (530), and stick the area of ​​the tape (50) between the second end (520) and the contact point (530) to the curved surface, and then rotate the curved surface back to the initial position; The contact point (530) is located at the midpoint of the tape (50), and the first preset angle is equal to the second preset angle; The arc length corresponding to the first preset angle is equal to the length between the first end (510) and the contact point (530), and the arc length corresponding to the second preset angle is equal to the length between the second end (520) and the contact point (530). It also includes the following steps: Clamping component return to position: After the secondary bonding step is completed, the clamping component moves to the cutting position of the tape (50) while keeping both ends open, and clamps the tape (50) of the preset length from both ends again before the next cutting action.

2. A curved surface tape bonding device, suitable for bonding curved surface tape using the bonding method described in claim 1, characterized in that, include: The clamping part (10) includes a first clamp (110) and a second clamp (120), and the opening and closing actions and movement positions of the first clamp (110) and the second clamp (120) are independently controlled; The cutting part (20) is used to cut the tape (50) so that the clamping part (10) clamps the tape (50) of the preset length and moves it to the tangent position of the curved surface; The pressure application section (30) includes a pressure roller (310) and a tensioner (320), wherein the pressure roller (310) is rotatably disposed and the tensioner (320) is used to press the pressure roller (310) against the curved surface; The feeding unit (40) includes a rotating seat (410) for placing the tape (50) and driving the tape (50) to be output to the cutting unit (20) by rotation.

3. The adhesive device as described in claim 2, characterized in that, The feeding unit (40) also includes an alarm device (420) for detecting the usage status of the tape (50) on the rotary seat (410), and the alarm device (420) issues an alarm signal when the tape (50) needs to be replaced.

4. The adhesive device as described in claim 3, characterized in that, The alarm device (420) detects the diameter of the tape (50) on the rotary seat (410) using a visual sensor or a through-beam sensor, and alarms when the diameter reaches a preset size to prompt the replacement of the tape (50).

5. The adhesive device as described in claim 3, characterized in that, The alarm signal is a light signal emitted by a flashlight or an sound signal emitted by a buzzer.

6. The adhesive device as described in claim 2, characterized in that, The feeding section (40) also includes a booster wheel (430) and a retainer (440). The output end of the tape (50) on the rotating seat (410) is attached to the outer periphery of the booster wheel (430) and is tightened by the retainer (440). The booster wheel (430) is rotated to assist the tape (50) in output.

7. The adhesive device as described in claim 6, characterized in that, The retainer (440) includes a pair of clamps for pre-clamping half of the tape (50) of a preset length before the tape (50) is cut, and for releasing after the first clamp (110) and the second clamp (120) cooperate to clamp the other half of the tape (50) of the preset length.

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