Tape application device, tape application mechanism, and tape application method for applying double-sided tape with zero tension

Abstract

A tape application device, tape application mechanism and tape application method for applying double-sided tape with zero tension, which belongs to a foil tape application device, includes an unwinding station (1), a winding station (3), a winding motor (4) and a tape application assembly (6). The unwinding station (1) discharges the double-sided tape, and after the tape of the double-sided tape is applied to the foil material via the tape application assembly (6), the winding motor (4) drives the winding station (3) to remove the remaining seg- ments on the double-sided tape. The tape application system further includes an unwinding drive assembly (2) that performs the winding operation on the paper feeder and drives the unwinding station (1) to perform the unwinding operation. During the tape application process, the unwinding and winding operations are performed synchronously, further optimizing the servo configuration for winding and unwinding and dividing it into multiple operating states, achieving something similar to the application of double-sided tape with zero tension. After the tape is applied, there is no rebound or wrinkling of the tape, improving the appearance of the foil material and tape, and further improving the average load across the entire width of the foil material, reducing the probability of strip breakage.

Description

[Technical field]

[0001] The present invention relates to a foil taping device, and more particularly to a tape application device, a tape application mechanism and a tape application method for applying double-sided tape with zero tension. [Background technology]

[0002] The current Chinese invention patent, published under the number CN111113930A, provides a multi-function tape application mechanism that synchronizes clutch-type punching, tape application and cutting, realizing the automated integrated functions of narrow and wide foil material strip splicing, tape preparation, punching, tape application and cutting.

[0003] In the above technology, the winding station actively winds up the separator paper and utilizes the traction of the double-sided tape to the unwinding station, continuously releasing the double-sided tape from the unwinding station. The double-sided tape is applied to the foil material while receiving a constant traction. Therefore, after the tape is applied and left to stand for a certain period of time, the double-sided tape resilient shrinks, causing wrinkles in the foil material and poor appearance, and improvement is awaited. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE DISCLOSURE In order to overcome the deficiencies of the prior art, the present invention provides a tape application device, a tape application mechanism and a tape application method for zero tension double-sided tape application to solve the above technical problems. [Means for solving the problem]

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: The method includes an unwinding station, a winding station, a winding motor, and a tape application assembly, the unwinding station discharges the double-sided tape, and after the tape of the double-sided tape is applied to the foil material via the tape application assembly, the winding motor drives the winding station to perform a winding operation on the separator paper remaining on the double-sided tape; The tape application apparatus further includes an unwinding drive assembly that drives the unwinding station to perform an unwinding operation, and during the tape application process, the unwinding operation and the winding operation are performed synchronously to apply double-sided tape with zero tension.

[0006] By adopting the above technical solution, during the tape application process, the unwinding station performs active unwinding and the winding station performs active winding, and an unwinding drive assembly and a winding motor are provided to ensure that the linear speeds of the unwinding station and the winding station are consistent when rotating, thereby ensuring that the double-sided tape is applied to the foil material without receiving traction; The present invention adopts the provision of an independent power source for the unwinding station, so that the double-sided tape is not subjected to traction, and the problem of wrinkles and poor appearance of the foil material caused by the rebound shrinkage of the double-sided tape is avoided.

[0007] Preferably, the machine further includes a cutter assembly for cutting the tape after tape application is complete, the cutter assembly including a cutter having a multi-cusped folded surface and a drive cylinder for driving the cutter to perform a down-cut operation.

[0008] By adopting the above technical solution, the driving cylinder's forward and backward movements are used to control the rise and fall of the cutter assembly, allowing the cutter assembly to complete the tape cutting operation; and since the boundary points of the bending surface of the cutter transition along a fold line, the boundary points are sharper. When the cutter cuts the tape, the boundary points are used to break the tape, thereby completing the tape cutting operation more quickly.

[0009] Preferably, the unwind drive assembly comprises an unwind motor for driving the rotation of the unwind station and a brake.

[0010] By adopting the above technical solution, the unwinding motor is used to drive the rotation of the unwinding station, and the brake tool can stop the unwinding station when the cutter assembly completes the tape cutting operation, thereby preventing the double-sided tape from being excessively wound on the unwinding station.

[0011] Preferably, the tape application assembly includes a first tape application guide roll, a second tape application guide roll and a tape application head, and after the double-sided tape is released by the unwinding station, it is guided sequentially through the first tape application guide roll and the second tape application guide roll below the tape application head, and the tape application head applies the tape of the double-sided tape to the foil material.

[0012] By adopting the above technical solution, the first tape application guide roll and the second tape application guide roll both act as guides, allowing the double-sided tape to be placed under the tape application head at a predetermined position and a predetermined angle, and the tape application head rolls over the foil material and simultaneously presses the tape down onto the foil material.

[0013] Preferably, the device further comprises a flattening pressing piece for performing a pre-squeezing operation on the foil material.

[0014] By adopting the above technical solution, the flattening pressure piece is usually positioned forward in the direction of movement of the tape application head, so that the foil material is pressed down flat by the flattening pressure piece before it is applied with tape, which improves the effect of tape application and further avoids the situation where the foil material is wrinkled after tape application.

[0015] A tape application mechanism for zero tension double-sided tape application, comprising a control unit, a linear module and a tape application device as described in any one of the above technical solutions.

[0016] By adopting the above technical solution, a control unit is used to control the rotation speeds of the unwinding motor and the winding motor, and in the tape application preparation process, the tape spreading process, the tape application process and the tape cutting process, the unwinding motor and the winding motor adopt different torques to ensure that the unwinding station and the winding station have the same linear speed in the tape application process, so that the tape is applied to the foil material with zero tension.

[0017] a tape application preparation step S1 in which the unwinding motor drives the winding at the unwinding station, the winding motor drives the winding at the winding station, and the difference between the torque of the unwinding motor and the torque of the winding motor is controlled to be smaller than the system resistance, and when the double-sided tape is tightened, the torque of the unwinding motor and the torque of the winding motor are gradually reduced to bring the double-sided tape into a taut state with zero tension; a tape spreading step S2 in which the take-up motor is set to a take-up torque for tape spreading, the unwinding motor is set to a unwinding torque for tape spreading, the take-up motor drives the take-up of the take-up station, the unwinding motor drives the unwinding of the unwinding station, and both the take-up station and the unwinding station are accelerated to a preset speed with the same acceleration; a tape application step S3, in which the linear module drives the tape application device to move along the foil material at a linear speed to perform a tape application operation, and in the tape application process, the linear speeds of the unwinding station and the winding station are both preset speeds, and the preset speed is the same as the linear speed of the linear module; and a tape cutting step S4 in which the linear module, the unwinding station and the winding station are decelerated to rest at the same deceleration, the cutter cuts the tape, and at the same time as the cutter cuts the tape, the unwinding motor drives the winding at the unwinding station with a torque equal to or greater than the cutting torque, which is a minimum torque at which the double-sided tape is not pulled out.

[0018] Preferably, in step S1, the method for measuring the system resistance is as follows: when the tape application apparatus is stationary, set the same initial torque to the take-up motor and the unwinding motor, the take-up motor drives the winding of the take-up station and the unwinding motor drives the winding of the unwinding station, and gradually increase the torque of the take-up motor or the unwinding motor until the double-sided tape is just pulled, record the unwinding torque of the unwinding motor and the winding torque of the take-up motor at this time, and the difference between the unwinding torque and the winding torque is the system resistance.

[0019] Preferably, in step S2, the method for measuring the take-up torque for tape spreading and the unwinding torque for tape spreading comprises: when the tape application device is stationary, setting an initial take-up torque and an initial unwinding torque for the take-up motor and the unwinding motor, respectively; the take-up motor drives the winding of the winding station, and the unwinding motor drives the unwinding of the unwinding station; using a speed measuring tool to measure and output the relationship curves of the linear speed vs. time of the winding station and the unwinding station; adjusting the initial winding torque and the initial unwinding torque to make the relationship curves of the linear speed vs. time of the winding station and the unwinding station the same; recording the take-up torque at this time as the winding torque for tape spreading, and recording the unwinding torque at this time as the unwinding torque for tape spreading.

[0020] Preferably, in step S4, the method of measuring the cutting torque involves setting an initial torque on the unwinding motor and winding the tape to the unwinding station, and if the double-sided tape is not pulled back by the cutter when it cuts the tape, gradually reducing the initial torque until the double-sided tape is just pulled back by the cutter when it cuts the tape, and recording the torque of the unwinding motor at this time as the cutting torque. Effect of the Invention

[0021] The beneficial effects of the present invention are as follows: 1. The present invention adopts an independent power source for the unwinding station, so that the double-sided tape is not subjected to traction, and the problems of wrinkles on the foil material and poor appearance caused by the rebound shrinkage of the double-sided tape are avoided; 2. The boundary of the bent surface of the cutter is transitioned by a fold line, so the boundary is sharper. When the cutter cuts the tape, it can use the boundary to break the tape, so that the tape cutting work can be completed more quickly. 3. The brake can stop the unwinding station when the cutter assembly completes the tape cutting operation, so as to avoid the double-sided tape being excessively wound on the unwinding station; 4. The flattening pressure piece is usually located ahead of the tape application head in the direction of movement, and the foil material is pressed down flat by the flattening pressure piece before it is applied with tape, so as to improve the effect of tape application and further prevent the foil material from being wrinkled after tape application; 5. Before applying the tape, the unwinding station and the winding station simultaneously retract the double-sided tape to make the double-sided tape slightly taut; otherwise, the double-sided tape will be applied to the foil material in a slack state, which will cause wrinkles in the tape applied to the foil material. [Brief description of the drawings]

[0022] The present invention will now be further described with reference to the drawings and examples.

[0023] [Figure 1] FIG. 2 is a structural schematic diagram of the tape application device according to the present invention. [Diagram 2] 2 is a detailed flowchart of the operation of the tape application method of the present invention; [Explanation of symbols]

[0024] The symbols in the drawings are explained as follows. 1...unwinding station, 2...unwinding drive assembly, 201...unwinding motor, 202...braking device, 3...winding station, 4...winding motor, 5...cutter assembly, 501...cutter, 502...drive cylinder, 6...tape application assembly, 601...first tape application guide roll, 602...second tape application guide roll, 603...tape application head, 7...flattening pressure piece. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] In order to fully understand the objectives, features, and effects of the present invention, the concept, specific structure, and resulting technical effects of the present invention will be described below clearly and completely with reference to the embodiments and drawings. The described embodiments are not all embodiments, but only some of the embodiments of the present invention. It is clear that other embodiments obtained based on the embodiments of the present invention without the need for creative labor by a person skilled in the art are within the scope of protection of the present invention. In addition, all the connections and connections in the patent do not only mean that the members are directly connected, but also mean that a better connection structure can be formed by adding or removing connection aids according to the specific implementation situation. Each technical feature in the creation of the present invention can be combined with each other on the premise that they are not contradictory or conflict with each other.

[0026] In a typical tape application device, only the winding station is active, while the unwinding station is passive. The winding station winds up the double-sided tape and applies a tensile force to the unwinding station, causing the double-sided tape to be continuously released from the unwinding station. The double-sided tape is subjected to a constant traction when it is applied to the foil material. Therefore, after the tape has been applied and is left to stand for a certain period of time, the double-sided tape resilient shrinks, causing problems such as wrinkles in the foil material and poor appearance.

[0027] In response to the above problems, the present invention provides a tape application device, a tape application mechanism and a tape application method for applying double-sided tape with zero tension, each of which will be described as follows.

[0028] As shown in FIG. 1, this tape application device is for applying double-sided tape with zero tension and comprises an unwinding station 1, a winding station 3, a winding motor 4 and a tape application assembly 6. The unwinding station 1 releases the double-sided tape, and after the double-sided tape has been applied to a foil material via the tape application assembly 6, the winding motor 4 drives the winding station 3 to perform a winding operation on the separator paper remaining on the double-sided tape.

[0029] Among them, the double-sided tape includes a separator paper and a tape, and the winding motor 4 can be a conventional winding motor 4, but as long as it can be driven so that the winding station 3 rotates, it is the winding motor 4 of the present invention.

[0030] The tape application apparatus further comprises an unwinding drive assembly 2 which drives the unwinding station 1 to perform the unwinding operation, and during the tape application process, the unwinding operation and the winding operation are performed synchronously.

[0031] During the tape application process, the unwinding station 1 performs an active unwinding operation, and the winding station 3 performs an active winding operation. An unwinding drive assembly 2 and a winding motor 4 are provided to ensure that the linear speeds of the unwinding station 1 and the winding station 3 when rotating are consistent, thereby ensuring that the double-sided tape is applied to the foil material without receiving traction.

[0032] The present invention adopts the provision of an independent power source for the unwinding station 1, so that the double-sided tape is not subjected to traction, and the problems of wrinkles in the foil material and poor appearance caused by rebound shrinkage of the double-sided tape are avoided.

[0033] This tape application device further includes a cutter assembly 5 for cutting the tape after tape application is completed, the cutter assembly 5 comprising a cutter 501 and a drive cylinder 502 for driving the cutter 501 to perform a down-cut operation, and the drive cylinder 502 is used to advance and return to control the raising or lowering of the cutter assembly 5, causing the cutter assembly 5 to complete the tape cutting operation.

[0034] The cutter 501 is provided with a multi-cusp bent surface, and the boundary points of the bent surface of the cutter 501 are transitioned by a bend line, so that the boundary points are sharper, and when the cutter 501 cuts the tape, the boundary points are used to break the tape, so that the tape cutting operation can be completed more quickly.

[0035] The unwinding drive assembly 2 comprises an unwinding motor 201 for driving the rotation of the unwinding station 1 and a brake device 202. The unwinding motor 201 is used to drive the rotation of the unwinding station 1, and the brake device 202 can stop the unwinding station 1 when the cutter assembly 5 completes the tape cutting operation, thereby preventing the double-sided tape from being excessively wound onto the unwinding station 1.

[0036] The tape application assembly 6 comprises a first tape application guide roll 601, a second tape application guide roll 602 and a tape application head 603. After the double-sided tape is released by the unwinding station 1, it is guided sequentially through the first tape application guide roll 601 and the second tape application guide roll 602 to below the tape application head 603. The tape application head 603 applies the tape of the double-sided tape to the foil material. The first tape application guide roll 601 and the second tape application guide roll 602 both act as guides, allowing the double-sided tape to be placed under the tape application head 603 at a preset position and a preset angle. The tape application head 603 rolls over the foil material and at the same time presses the tape down onto the foil material.

[0037] This tape application device further comprises a flattening pressure piece 7 for pre-squashing the foil material. The flattening pressure piece 7 is usually located forward in the direction of movement of the tape application head 603, so that the foil material is pressed down flat by the flattening pressure piece 7 before the tape is applied, improving the effect of tape application and further avoiding the situation where wrinkles occur in the foil material after tape application.

[0038] Before starting tape application, unwinding station 1 and winding station 3 simultaneously wind up the double-sided tape so as to tighten it, and before tape application, unwinding station 1 and winding station 3 simultaneously pull back the double-sided tape to put the double-sided tape in a slightly taut state; otherwise, the double-sided tape will be applied to the foil material in a slack state, which will cause wrinkles in the tape applied to the foil material.

[0039] The present invention further provides a taping mechanism for zero tension taping of double-sided tape, comprising a control unit and the above taping device.

[0040] A control unit is used to control the rotation speed of the unwind motor 201 and the take-up motor 4, so that during multiple steps such as before tape application, at the start of tape application, during the tape application process and tape cutting, the unwind motor 201 and the take-up motor 4 provide different linear speeds for the unwind station 1 and the take-up station 3, so that the double-sided tape is finally applied to the foil material with zero tension.

[0041] In order to match the above-mentioned tape application device and tape application mechanism for applying double-sided tape with zero tension, the present invention further provides a tape application method for the tape application device as follows.

[0042] A method for applying double-sided tape with zero tension, comprising a tape application preparation step S1, a tape spreading step S2, a tape application step S3, and a tape cutting step S4, S1, in the tape application preparation process, the unwinding motor 201 drives the winding of the unwinding station 1, and the winding motor 4 drives the winding of the winding station 3. The difference between the torque of the unwinding motor 201 and the torque of the winding motor 4 is controlled to be smaller than the system resistance. When the double-sided tape is tightened, the torque of the unwinding motor 201 and the torque of the winding motor 4 are gradually reduced to bring the double-sided tape into a tensioned state with zero tension. Step S1 is primarily intended to bring the double-sided tape into a taut state with zero tension before application of the tape. In this invention, the taut state with zero tension refers to the state in which the double-sided tape gradually becomes taut from a slack state, just before it is about to assume tension, and can also be described as the state in which no wrinkles occur even after a certain period of time has passed since it was applied to the foil material.

[0043] In step S1, the method of measuring the system resistance is as follows: when the tape application apparatus is stationary, the same initial torque is set to the take-up motor 4 and the unwinding motor 201, the take-up motor 4 drives the winding of the winding station 3, and the unwinding motor 201 drives the winding of the unwinding station 1, and the torque of the take-up motor 4 or the unwinding motor 201 is gradually increased until the double-sided tape is just pulled, and the unwinding torque of the unwinding motor 201 and the winding torque of the winding motor 4 at this time are recorded, and the difference between the unwinding torque and the winding torque is the system resistance.

[0044] S2, in the tape spreading process, the winding motor 4 is set to a winding torque for tape spreading, and the unwinding motor 201 is set to a winding torque for tape spreading, the winding motor 4 drives the winding of the winding station 3, and the unwinding motor 201 drives the unwinding of the unwinding station 1, and the winding station 3 and the unwinding station 1 are both accelerated to a preset speed with the same acceleration; Step S2 is mainly for ensuring that no tension is generated in the double-sided tape during the process in which the linear speeds of the winding station 3 and the unwinding station 1 are accelerated to a preset speed.

[0045] In step S2, the method for measuring the winding torque for tape spreading and the unwinding torque for tape spreading is as follows: when the tape application device is stationary, an initial winding torque and an initial unwinding torque are set for the winding motor 4 and the unwinding motor 201, respectively; the winding motor 4 drives the winding of the winding station 3, and the unwinding motor 201 drives the unwinding of the unwinding station 1; a speed measuring tool is used to measure and output the relationship curves between the linear speed and time of the winding station 3 and the unwinding station 1; the initial winding torque and the initial unwinding torque are adjusted to make the relationship curves between the linear speed and time of the winding station 3 and the unwinding station 1 the same; the winding torque at this time is recorded as the winding torque for tape spreading, and the unwinding torque at this time is recorded as the unwinding torque for tape spreading.

[0046] S3. In the tape application process, the linear module drives the tape application device to move along the foil material at a linear speed to perform the tape application process. In the tape application process, the linear speeds of the unwinding station 1 and the winding station 3 are both preset speeds, and the preset speeds are the same as the linear speed of the linear module; The linear speed is the speed at which the tape application head moves relative to the foil, and is also the speed at which the linear module moves. S4, in the tape cutting process, the linear module, unwinding station 1 and winding station 3 are decelerated to a standstill at the same deceleration, the cutter 501 cuts the tape, and at the same time when the cutter 501 cuts the tape, the unwinding motor 201 drives the winding of the unwinding station 1 with a torque equal to or greater than the cutting torque, which is the minimum torque at which the double-sided tape is not pulled out, and when the cutter 501 moves back after cutting the tape, the brake device 202 stops the unwinding motor 201.

[0047] In step S4, the method of measuring the cutting torque is to set an initial torque to the unwinding motor 201 and wind the tape onto the unwinding station 1, and if the double-sided tape is not pulled back by the cutter 501 when it cuts the tape, then the initial torque is gradually reduced until the double-sided tape is just pulled back by the cutter 501 when it cuts the tape, and the torque of the unwinding motor 201 at this time is recorded as the cutting torque.

[0048] Although the preferred embodiments of the present invention have been described in detail above, the invention is not limited to the above embodiments. Those skilled in the art may make various equivalent modifications or replacements without departing from the spirit of the present invention, and all of these equivalent modifications or replacements are included within the scope of the claims of the present invention.

Claims

1. an unwind station, a take-up station, a take-up motor and a tape application assembly; The unwinding station discharges the double-sided tape, and after the double-sided tape is attached to the foil material through the tape application assembly, the winding motor drives the winding station to wind up the separator paper remaining on the double-sided tape; and an unwinding drive assembly for driving an unwinding station to perform an unwinding operation, wherein the double-sided tape is in a tensioned state with zero tension before tape application, and during the tape application process, the unwinding operation and the winding operation are performed synchronously, and the linear speeds of rotation of the unwinding station and the winding station are the same.

1. A tape application device for applying double-sided tape with zero tension.

2. a cutter assembly for cutting the tape after tape application is completed, the cutter assembly including a cutter having a surface provided as a multi-cusped folded surface and a drive cylinder for driving the cutter to perform a down-cut operation; 2. A tape application device for applying the double-sided tape according to claim 1 with zero tension.

3. The unwind drive assembly includes an unwind motor and a brake device for driving the rotation of the unwind station.

2. A tape application device for applying the double-sided tape according to claim 1 with zero tension.

4. the tape application assembly includes a first tape application guide roll, a second tape application guide roll, and a tape application head, and the double-sided tape is discharged from the unwinding station and then guided below the tape application head via the first tape application guide roll and the second tape application guide roll in sequence, and the tape application head applies the double-sided tape to a foil material; 2. A tape application device for applying the double-sided tape according to claim 1 with zero tension.

5. Further provided is a flattening pressing piece for performing a pre-squeezing operation on the foil material; 2. A tape application device for applying the double-sided tape according to claim 1 with zero tension.

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