Automatic belt splicing device and method

Abstract

The invention discloses an automatic belt splicing device and method, and relates to the technical field of coating machines, the device comprises a first traction roller, a first holding piece, a first cutter and a gluing mechanism which are sequentially arranged in the conveying direction of a material belt, a second traction roller is arranged on one side of the first traction roller, and the first traction roller and the second traction roller are used for conveying the material belt; the first holding piece is used for fixing a material belt, the first cutter is used for cutting off the material belt, and the gluing mechanism is used for pasting and fixing an adhesive tape and the material belt. By means of the structure, automatic tape splicing is achieved, manual intervention is not needed, the roll changing efficiency is improved, and the problem that the coating thickness is not uniform due to shutdown is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating machines, in particular to an automatic tape splicing device and method. BACKGROUND

[0002] In the coating process, the release film and non-woven fabric need to be replaced after a roll is produced. Currently, the common replacement method on the market is manual operation during shutdown: the equipment stops running, and the workers manually replace the roll and restart the equipment. The defect of this method is that the start-stop stage will cause uneven coating thickness, which not only wastes release film, non-woven fabric and raw materials, but also significantly reduces the equipment yield and production efficiency. To solve this problem, some automatic roll replacement devices have appeared in the prior art. For example, Chinese patent application CN119038264A discloses a roll replacement device and coating machine, which includes a rubberizing mechanism, a backup rubberizing mechanism, a tape pulling mechanism and a waste collecting mechanism, which can realize double-sided rubberizing and tail collection, avoiding the influence of tail falling on equipment operation. The device completes the bonding of the working tape and the new roll tape by the cooperation of the second rubberizing assembly and the second rubberizing assembly, and cuts the tape by the tape cutting module, improving the automation degree of roll replacement.

[0003] However, the roll replacement device described in CN119038264A still has limitations in actual application. In the roll replacement process, the backup roll and the working roll need to pass through the roll splicing mechanism at the same time, and the tape cutting module needs to cut two layers of tape at the same time. This design has poor applicability for soft and deformable materials such as non-woven fabric, which may cause uneven cutting or poor bonding, affecting the quality of tape splicing. In addition, the device has a complex structure and many operation processes, which may prolong the roll replacement time in a high-speed production environment, making it difficult to meet the requirements of high efficiency and stability in transdermal patch production.

[0004] Therefore, it is urgent to develop an automatic tape splicing mechanism specially used for non-woven fabric and release film, which can realize fast and reliable roll replacement under the premise of ensuring that the equipment does not stop, further improve the yield and production efficiency, and reduce the production cost. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, provide an automatic tape splicing device and method, which can realize fast and reliable roll replacement under the premise of ensuring that the equipment does not stop, improve the yield and production efficiency, and reduce the production cost.

[0006] The technical scheme adopted by the present application to solve its technical problems is: an automatic tape connecting device, comprising a first traction roller, a first retaining member, a first cutter and a gluing mechanism arranged in sequence along the conveying direction of the tape, a second traction roller is arranged on one side of the first traction roller, the first traction roller and the second traction roller are used for conveying the tape, the first retaining member is used for fixing the tape, the first cutter is used for cutting the tape, and the gluing mechanism is used for pasting and fixing the adhesive tape and the tape. Through the above structure, automatic tape connection is realized, manual intervention is not required, the roll changing efficiency is improved, and the problem of uneven coating thickness caused by shutdown is avoided.

[0007] Further, the gluing mechanism comprises a first rotating seat and a second rotating seat arranged oppositely, a first glue plate and a third glue plate are arranged on the first rotating seat, a second glue plate and a fourth glue plate are arranged on the second rotating seat, the first glue plate, the third glue plate, the second glue plate and the fourth glue plate are used for adsorbing the adhesive tape and fixing the tape, and a second retaining member and a second cutter are arranged between the second traction roller and the second rotating seat, the second retaining member is arranged opposite to the first retaining member, and the second cutter is arranged opposite to the first cutter. This structure realizes continuous tape connection and can continuously connect the tape without shutdown.

[0008] Further, the first traction roller, the first retaining member, the first cutter and the first rotating seat are arranged from top to bottom, and the second traction roller, the second retaining member, the second cutter and the second rotating seat are arranged from top to bottom. This arrangement structure is compact, reduces the volume of the mechanism, saves equipment space, and the conveying of the tape can be pulled by gravity, facilitating the conveying of the new tape to the gluing mechanism.

[0009] Further, a center member is arranged between the first cutter and the second cutter, and the first cutter and the second cutter are used for cutting the tape in cooperation with the center member. The center member is used for separating two tapes to avoid cutting the two tapes by the cutter.

[0010] Further, the center member extends between the first retaining member and the second retaining member, and the first retaining member and the second retaining member are used for pressing the tape in cooperation with the center member to avoid fixing the two tapes by the retaining member at the same time.

[0011] Further, a first roll is arranged upstream of the first traction roller, and a second roll is arranged upstream of the second traction roller; and a tension lever mechanism, a main traction mechanism and a buffer storage mechanism are arranged downstream of the gluing mechanism in sequence.

[0012] An automatic tape connecting method, comprising the above automatic tape connecting device, and the method steps are as follows:

[0013] A: The second tape is pulled to the gluing mechanism, and the gluing mechanism pastes and presses the first tape and the second tape by the adhesive tape;

[0014] B: the first holding member is operated to fix and hold the first material strip, and the first cutter is operated to cut the first material strip;

[0015] C: the first material strip and the second material strip are loosened by the gluing mechanism.

[0016] The method has few actions and short material strip connecting time, realizes efficient automatic material strip connecting, and significantly reduces roll changing time and labor cost.

[0017] Further, the step C is followed by a step D: the second traction roller is operated to pull the end of the first material strip between the gluing mechanism, and the gluing mechanism is operated to paste the first material strip to the second material strip by the adhesive tape. This completes the back gluing, ensures the firmness and integrity of the material strip connection, and reduces the possibility of product production failure.

[0018] Further, in the step A, the second traction roller is operated to pull the second material strip between the gluing mechanism.

[0019] Further, in the step B, the first traction roller is operated to tension the first material strip, and the first holding member is operated to fix and hold the first material strip, so as to tension the material strip and facilitate cutting.

[0020] The present application has the following beneficial effects: the automatic material strip connecting device and method realize automatic roll changing of the coating machine without stopping, do not need manual operation, improve the yield and production efficiency of the equipment, and reduce the production cost. The device has compact structure and simple operation process, has short material strip connecting time, is suitable for soft materials such as non-woven fabric and release film, and has high material strip connecting quality. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 —the overall plan view of the present application;

[0022] Figure 2 —the sectional view of the material strip connecting assembly of the present application;

[0023] Figure 3 —the simplified schematic view of the material strip connecting assembly of the present application;

[0024] Figure 4 —the schematic view of the step A of the present application;

[0025] Figure 5 —the schematic view of the step B of the present application;

[0026] Figure 6 —the schematic view of the step C of the present application;

[0027] Figure 7 —the schematic view of the step D of the present application;

[0028] In the figure: 1-first tape connecting assembly, 11-first traction roller, 12-first retaining member, 13-first cutter, 14-first rotating seat, 15-first rubber plate, 16-third rubber plate, 17-first material tape, 2-second tape connecting assembly, 21-second traction roller, 22-second retaining member, 23-second cutter, 24-second rotating seat, 25-second rubber plate, 26-fourth rubber plate, 27-second material tape, 3-center member, 4-first material roll, 5-second material roll, 6-tension swing lever mechanism, 7-main traction mechanism, 8-buffer material placing mechanism, 9-rubber tape. DETAILED DESCRIPTION

[0029] Reference Figures 1-3 The embodiment provides an automatic tape connecting device, which comprises a first traction roller 11, a first retaining member 12, a first cutter 13 and a rubber coating mechanism arranged in sequence along a material tape conveying direction, one side of the first traction roller 11 is provided with a second traction roller 21, the first traction roller 11 and the second traction roller 21 are used for conveying material tapes, the first retaining member 12 is used for fixing material tapes, the first cutter 13 is used for cutting off material tapes, and the rubber coating mechanism is used for pasting and fixing a rubber tape 9 with a material tape. The first traction roller 11 conveys a material tape about to be used up, the second traction roller 21 conveys an unused material tape, the second traction roller 21 firstly conveys the material tape to the rubber coating mechanism, the rubber coating mechanism pastes and fixes the rubber tape 9 with the material tape, the first retaining member 12 fixes the material tape about to be used up, the first cutter 13 cuts off the material tape about to be used up, and automatic tape connecting is completed.

[0030] The application comprises a first tape connecting assembly 1 and a second tape connecting assembly 2 arranged symmetrically.

[0031] The first tape connecting assembly 1 comprises a first traction roller 11, a first retaining member 12, a first cutter 13 and a first rotating seat 14 arranged in sequence along a material tape conveying direction; the first traction roller 11, the first retaining member 12, the first cutter 13 and the first rotating seat 14 adopt a vertical arrangement mode from top to bottom.

[0032] The second tape connecting assembly 2 comprises a second traction roller 21, a second retaining member 22, a second cutter 23 and a second rotating seat 24, and the second traction roller 21, the second retaining member 22, the second cutter 23 and the second rotating seat 24 adopt a vertical arrangement mode from top to bottom.

[0033] A center member 3 is arranged between the first tape connecting assembly 1 and the second tape connecting assembly 2. The center member 3 simultaneously extends to between the first retaining member 12 and the second retaining member 22 and between the first cutter 13 and the second cutter 23. The key role of the center member 3 is to physically isolate two material tapes, so that the first retaining member 12 and the second retaining member 22 can only press the respective material tapes respectively, and the first cutter 13 and the second cutter 23 can only cut the corresponding material tapes respectively during the tape connecting operation, thereby avoiding misoperation.

[0034] The gluing mechanism adopts a unique double-rotating seat design, including a first rotating seat 14 and a second rotating seat 24 arranged oppositely. The first rotating seat 14 is provided with a first glue plate 15 and a third glue plate 16, and the second rotating seat 24 is provided with a second glue plate 25 and a fourth glue plate 26. The surfaces of these glue plates are provided with vacuum suction holes, which can reliably suck the adhesive tape 9, and the adhesive tape 9 can be placed on the glue plate by a mechanical hand or manually. The first rotating seat 14 and the second rotating seat 24 can independently rotate, and the glue plates can be telescopic for gluing.

[0035] The upstream of the first traction roller 11 is provided with a first material roll 4 as a material roll in use in production, and the upstream of the second traction roller 21 is provided with a second material roll 5 as a standby material roll. The downstream of the gluing mechanism is sequentially provided with a tension swing lever mechanism 6, a main traction mechanism 7, and a buffer material placing mechanism 8. The buffer material placing mechanism 8 plays a key role here, which can provide continuous material supply for the downstream process during the tape connecting process, ensuring uninterrupted production.

[0036] Referring to Figures 4-7 , the embodiment provides a method based on an automatic tape connecting device, and the specific steps are as follows:

[0037] First, the preparation work is carried out: the second material tape 27 on the second material roll 5 is wound around the second traction roller 21, and the adhesive tape 9 used for connecting the tape is pre-sucked on the fourth glue plate 26, when the first material roll 4 is about to be used up for connecting the tape;

[0038] Step A (as shown in Figure 4 ), the second material tape 27 is introduced to the tape connecting area (between the gluing mechanisms) between the first rotating seat 14 and the second rotating seat 24 by manual or positive rotation of the second traction roller 21, the first glue plate 15 and the fourth glue plate 26 move to the middle and are pressed together (which can also be completed by the action of the first rotating seat 14 and the second rotating seat 24), and the first material tape 17 and the second material tape 27 are firmly adhered by the adhesive tape 9 pre-arranged on the fourth glue plate 26.

[0039] Step B (as shown in Figure 5 ), the first traction roller 11 is reversed, so that the first material tape 17 is kept in a tensioned state. The first holding member 12 acts in cooperation with the center member 3 to press and fix the first material tape 17. Subsequently, the first cutter 13 acts in cooperation with the center member 3 to cut the first material tape 17 neatly.

[0040] Step C (as shown in Figure 6 ), the first glue plate 15 and the fourth glue plate 26 act to separate (which can also be completed by the action of the first rotating seat 14 and the second rotating seat 24), at this time, the second material tape 27 is connected with the first material tape 17 through the adhesive tape 9, and the preliminary tape connecting is completed, and the material supply for the downstream can continue.

[0041] Step D (as shown in Figure 7 In order to ensure the firmness of the splicing, the second surface (back surface) reinforcing adhesive is applied. The second traction roller 21 is operated to pull the end (i.e. the cut end) of the first tape 17 to the splicing area. The first rotating seat 14 is rotated by 90° to make the third adhesive plate 16 with the adhesive tape 9 arranged opposite to the second rotating seat 24, and is again pressed to perform the second surface (back surface) adhesion of the connection between the first tape 17 and the second tape 27 by the adhesive tape 9, to form a double-sided adhesive structure, and to significantly improve the splicing strength.

[0042] The present application realizes the efficient and reliable automatic roll changing of the coating machine by the beneficial combination of the above device and method, is particularly suitable for the splicing requirements of soft materials such as non-woven fabric and release film, and effectively improves the equipment utilization and production efficiency.

[0043] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An automatic tape engaging device characterized by: The automatic tape connecting device comprises a first traction roller (11), a first holding member (12), a first cutter (13) and a gluing mechanism arranged in sequence along the conveying direction of the material tape, the first traction roller (11) is provided with a second traction roller (21) on one side, the first traction roller (11) and the second traction roller (21) are used for conveying the material tape, the first holding member (12) is used for fixing the material tape, the first cutter (13) is used for cutting the material tape, and the gluing mechanism is used for pasting and fixing the adhesive tape (9) and the material tape.

2. The automatic tape engagement device according to claim 1, characterized by: The gluing mechanism comprises oppositely arranged first and second rotating seats (14) and (24), the first rotating seat (14) is provided with first and third glue plates (15) and (16), the second rotating seat (24) is provided with second and fourth glue plates (25) and (26), the first, third, second and fourth glue plates (15), (16), (25) and (26) are used for adsorbing the adhesive tape (9) and fixing the material tape, the second holding member (22) and the second cutter (23) are arranged between the second traction roller (21) and the second rotating seat (24), the second holding member (22) is arranged opposite to the first holding member (12), and the second cutter (23) is arranged opposite to the first cutter (13).

3. The automatic tape engagement device according to claim 2, characterized by: The first traction roller (11), the first holding member (12), the first cutter (13) and the first rotating seat (14) are arranged from top to bottom, and the second traction roller (21), the second holding member (22), the second cutter (23) and the second rotating seat (24) are arranged from top to bottom.

4. The automatic tape engagement device according to claim 2, characterized by: The first cutter (13) and the second cutter (23) are arranged between the first cutter (13) and the second cutter (23), and the first cutter (13) and the second cutter (23) are used for cutting the material tape in cooperation with the center member (3).

5. The automatic tape engagement device according to claim 4, characterized in that: The center member (3) extends to between the first holding member (12) and the second holding member (22), and the first holding member (12) and the second holding member (22) are used for pressing the material tape in cooperation with the center member (3).

6. The automatic tape engagement device according to claim 1, characterized by: The first traction roller (11) is provided with a first material roll (4) upstream, the second traction roller (21) is provided with a second material roll (5) upstream, and the gluing mechanism is sequentially provided with a tension swing lever mechanism (6), a main traction mechanism (7) and a buffer storage mechanism (8) downstream.

7. An automatic tape engaging method characterized by: The automatic tape connecting device comprises the automatic tape connecting device of any one of claims 1-6, and the method steps are as follows: A: the second material tape (27) is pulled to between the gluing mechanisms, the gluing mechanisms paste and press the first material tape (17) and the second material tape (27) through the adhesive tape (9); B: the first holding member (12) acts to fix and hold the first material tape (17), and the first cutter (13) acts to cut the first material tape (17); C: the gluing mechanism releases the first material tape (17) and the second material tape (27).

8. The automatic taping method according to claim 7, characterized in that: The step C comprises a step D: the second traction roller (21) acts to pull the end of the first material tape (17) to between the gluing mechanisms, and the gluing mechanisms paste the first material tape (17) and the second material tape (27) through the adhesive tape (9).

9. The automatic taping method according to claim 7, characterized in that: In the step A, the second traction roller (21) rotates in the forward direction to pull the second material tape (27) to between the gluing mechanisms.

10. The automatic taping method according to claim 7, characterized in that: In the step B, the first pulling roller (11) reverses to tension the first material tape (17), and the first holding member (12) acts to fix and hold the first material tape (17).

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