Automatic unwinding machine, double-winding and double-unwinding coating production line and automatic unwinding method

Abstract

The present invention discloses an automatic unwinding machine, a double-winding and double-unwinding coating production line and an automatic unwinding method, which belongs to the technical field of diaphragm processing. The automatic unwinding machine comprises: a frame; a rotating frame; two fixed frames, which are symmetrically arranged on the rotating frame, and the fixed frames are used to fix the coil barrel, and the rotating frame is used to drive the two fixed frames to exchange positions; a clamping mechanism, each fixed frame is provided with a clamping mechanism, and the clamping mechanism is used to fix the beginning of the diaphragm; a tensioning mechanism, and the tensioning mechanism is used to adjust the tension of the diaphragm; a hot pressing mechanism, and the hot pressing mechanism cooperates with the clamping mechanism to heat and press the diaphragm of one fixed frame onto the diaphragm of another fixed frame, and then cuts off the diaphragm of one fixed frame; the rotating frame, the hot pressing mechanism and the tensioning mechanism are arranged in sequence along the conveying path of the diaphragm. The present invention avoids the problem of decreased bonding strength caused by the adhesive losing viscosity or chemical changes at high temperature, thereby reducing the phenomenon of falling off or degumming, and improving production efficiency and quality.

Description

Technical Field

[0001] The invention relates to the technical field of diaphragm processing, and in particular to an automatic unwinding machine, a double-winding and double-unwinding coating production line and an automatic unwinding method. Background Art

[0002] The unwinding machine is a device used in the diaphragm unwinding process in the diaphragm production and processing equipment. It fixes the reel used to wind the diaphragm on the rotating shaft, uses an external power source to drive the rotating shaft to rotate, and drives the reel to rotate together, thereby realizing the unwinding operation of the diaphragm.

[0003] In the prior art, in order to overcome the problem of shutting down the equipment, cutting the film and manually replacing the reel after the unwinding work is completed, the diaphragm that is about to be unwound is usually bonded to a new reel to achieve automatic replacement of the reel. In the coating process of the diaphragm, the diaphragm needs to be preheated after unwinding to improve the flatness of the diaphragm. However, the adhesive easily loses its viscosity or undergoes chemical changes at high temperatures, resulting in reduced bonding strength, making the originally strong bonding point fragile, and causing shedding or debonding. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an automatic unwinding machine, a double-winding and double-unwinding coating production line and an automatic unwinding method, which can avoid the phenomenon of falling off or debonding caused by the use of adhesives, and make the connection between the new and old diaphragms more firm and durable.

[0005] In the first aspect, the automatic unwinding machine according to the embodiment of the present invention includes a frame; a rotating frame, which is rotatably arranged on the frame; two fixed frames, which are symmetrically arranged on the rotating frame, the fixed frames are used to fix the coil drum, and the rotating frame is used to drive the two fixed frames to exchange positions; a clamping mechanism, each fixed frame is provided with a clamping mechanism, the clamping mechanism is located on the side of the corresponding fixed frame away from the other fixed frame, the two clamping mechanisms are centrally symmetrically arranged on the rotating frame, and the clamping mechanism is used to fix the starting end of the diaphragm; a tensioning mechanism, the tensioning mechanism is arranged on the frame, the tensioning mechanism is located on one side of the rotating frame, and the tensioning mechanism is used to adjust the tension of the diaphragm; a hot pressing mechanism, the hot pressing mechanism is movably arranged on the frame, and the hot pressing mechanism cooperates with the clamping mechanism to heat and press the diaphragm of one fixed frame onto the diaphragm of the other fixed frame, and then the hot pressing mechanism cuts off the diaphragm of one fixed frame; the rotating frame, the hot pressing mechanism and the tensioning mechanism are arranged in sequence along the conveying path of the diaphragm.

[0006] The automatic unwinding machine according to the embodiment of the present invention has at least the following beneficial effects: replacing a new roll onto an idle fixed frame, fixing the beginning of the next roll of diaphragm on the new roll onto the corresponding clamping mechanism, rotating the rotating frame to exchange the positions of the two fixed frames so that the diaphragm to be unwound is located above the next roll of diaphragm, the hot pressing mechanism cooperates with the clamping mechanism to press the diaphragm to be unwound on one fixed frame onto the next roll of diaphragm on the other fixed frame, the hot pressing mechanism heats and melts the diaphragm to be unwound and presses it onto the next roll of diaphragm, and then cuts off the diaphragm to be unwound. Thus, by automatically heating and pressing the diaphragm to be unwound onto the new diaphragm, the automatic replacement of the roll is realized, the tediousness and time cost of manual operation are avoided, and the hot pressing technology is used for connection, which avoids the problem of decreased bonding strength caused by the adhesive losing viscosity or chemical changes at high temperature, thereby reducing shedding or debonding and improving production efficiency and quality.

[0007] According to some embodiments of the present invention, the hot pressing mechanism includes: a mounting frame, which is movably mounted on a frame; a hot pressing roller, which is rotatably mounted on the mounting frame, and is used to fix the diaphragm of one fixed frame to the upper end of the diaphragm of another fixed frame; a compensation assembly, which is rotatably mounted on the mounting frame, and is used to adjust the position of the diaphragm so that only part of the diaphragm can move in a direction opposite to the conveying path; and a cutter assembly, which is movably connected to the mounting frame, and is used to cut the diaphragm.

[0008] According to some embodiments of the present invention, the compensation assembly includes: a connecting member, the connecting member is rotatably disposed on a mounting frame, the connecting member is rotatably connected to the hot pressure roller, the connecting member has a first end and a second end, the first end and the second end are respectively located on both sides of the hot pressure roller; a first pressure roller, the first pressure roller is rotatably disposed at the first end, the first pressure roller can abut against the diaphragm; a second pressure roller, the second pressure roller is rotatably disposed at the second end, the second pressure roller can abut against the diaphragm, and the connecting member is used to drive the first pressure roller to abut against the diaphragm, and drive the second pressure roller to abut against and separate from the diaphragm.

[0009] According to some embodiments of the present invention, the first pressing roller, the hot pressing roller and the second pressing roller are arranged in the same direction and in a triangular arrangement.

[0010] According to some embodiments of the present invention, the first pressing roller is a preheating roller.

[0011] According to some embodiments of the present invention, the clamping mechanism includes: a first clamping roller, which is rotatably disposed on a rotating frame; a second clamping roller, which is movably disposed on the rotating frame, and the second clamping roller is located between the first clamping roller and the fixed frame, and there is a gap between the first clamping roller and the second clamping roller, and the second clamping roller is used to adjust the size of the gap to adapt to the thickness of the diaphragm.

[0012] According to some embodiments of the present invention, a diameter of the second clamping roller is smaller than a diameter of the first clamping roller.

[0013] According to some embodiments of the present invention, the cutter assembly includes: a cutter, which is movably disposed on the first pressure roller and is used to cut the diaphragm; a driving member, which is disposed on the mounting frame and is connected to the cutter and is used to drive the cutter to approach and move away from the diaphragm.

[0014] According to some embodiments of the present invention, the tensioning mechanism includes: a tension roller, the tension roller being fixed on the frame;

[0015] Floating roller, the floating roller is movably arranged on the frame, the tension roller and the floating roller are arranged in sequence along the conveying path of the diaphragm, the diaphragm is wound around the tension roller and the floating roller in sequence, the tension roller is used to detect the tension of the diaphragm, and the floating roller is used to adjust the tensioning force of the diaphragm.

[0016] According to the second aspect of the embodiment of the present invention, the double-winding and double-unwinding coating production line includes two groups of continuous coating processing equipment, one of which is arranged above the other continuous coating processing equipment, and the two groups of continuous coating processing equipment are arranged in a mirror image. The continuous coating processing equipment includes a preheater, a sprayer, a dryer, a surface changer, a winder, and the above-mentioned automatic unwinding machine. The automatic unwinding machine, preheater, sprayer, dryer, surface changer and winder are arranged in sequence.

[0017] According to the third aspect of the present invention, the automatic unwinding method includes:

[0018] S1: Replace the new roll onto the idle fixed frame, and fix the beginning of the next roll of diaphragm onto the corresponding clamping mechanism;

[0019] S2: rotating the rotating frame to exchange the positions of the two fixed frames so that the upper roll of diaphragm is located above the lower roll of diaphragm;

[0020] S3: moving the mounting frame toward the direction approaching the previous roll of diaphragm, so that the first pressing roller, the hot pressing roller and the second pressing roller press the previous roll of diaphragm of one fixed frame onto the next roll of diaphragm of the other fixed frame, until the first pressing roller, the hot pressing roller and the second pressing roller press the previous roll of diaphragm onto the upper end of the next roll of diaphragm in sequence along the conveying path of the diaphragm, and the hot pressing roller heats and melts the previous roll of diaphragm and presses it onto the next roll of diaphragm to form a hot pressing line;

[0021] S4: rotating the connecting member to drive the first pressing roller and the second pressing roller to rotate in the same direction, the second pressing roller is separated from the previous roll of diaphragm, and drives the hot pressing line to move in the direction opposite to the diaphragm conveying path, and the hot pressing roller presses the previous roll of diaphragm onto the next roll of diaphragm in the direction opposite to the diaphragm conveying path until the beginning of the next roll of diaphragm is fixedly connected to the previous roll of diaphragm;

[0022] S5: using a cutter assembly to cut off the previous roll of diaphragm, pulling the next roll of diaphragm along the diaphragm conveying path, and the hot pressing roller presses the previous roll of diaphragm onto the next roll of diaphragm along the direction of the diaphragm conveying path until the end of the previous roll of diaphragm is fixedly connected to the next roll of diaphragm;

[0023] S6: Pull the next roll of diaphragm and move the mounting frame in a direction away from the next roll of diaphragm, so that the first pressing roller, the hot pressing roller and the second pressing roller are separated from the next roll of diaphragm, and the automatic replacement of the previous roll of diaphragm and the next roll of diaphragm is completed.

[0024] According to some embodiments of the present invention, in S3, the first pressing roller and the hot pressing roller are at the same height, and the second pressing roller is lower than the first pressing roller and the hot pressing roller.

[0025] According to some embodiments of the present invention, in S4, the second pressing roller and the hot pressing roller are at the same height, and the first pressing roller is lower than the hot pressing roller and the second pressing roller.

[0026] According to some embodiments of the present invention, in S3 and S4, the distance between the axis of the first pressure roller and the axis of the hot pressure roller is a, and the distance between the axis of the second pressure roller and the axis of the hot pressure roller is b, wherein a=b.

[0027] According to some embodiments of the present invention, in S6, a tensioning mechanism is used to adjust the tension of the diaphragm so that the diaphragm can be smoothly conveyed along the conveying path.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0030] Figure 1 is a schematic diagram of an automatic unwinding machine according to an embodiment of the present invention;

[0031] Figure 2 yes Figure 1 A schematic diagram of the structure of the hot pressing mechanism;

[0032] Figure 3 yes Figure 1 A schematic diagram of the structure of the rotating frame, the fixed frame and the clamping mechanism;

[0033] Figure 4 1 is a schematic flow chart of an automatic unwinding method according to an embodiment of the present invention;

[0034] Figure 5 yes Figure 4 Schematic diagram of the structure corresponding to S1;

[0035] Figure 6 yes Figure 4 Schematic diagram of the structure corresponding to S2;

[0036] Figure 7 yes Figure 4 Schematic diagram of the structure corresponding to S3;

[0037] Figure 8 yes Figure 4 Schematic diagram of the structure corresponding to S4;

[0038] Fig. 9 yes Figure 4 Schematic diagram of the structure corresponding to S5;

[0039] Fig.10 yes Figure 4 Schematic diagram of the structure corresponding to S6.

[0040] Reference numerals:

[0041] Rack 100;

[0042] Rotating frame 200, transition roller 210;

[0043] Fixed frame 300;

[0044] Clamping mechanism 400, first clamping roller 410, second clamping roller 420;

[0045] Tensioning mechanism 500, tension roller 510, floating roller 520, connecting seat 530;

[0046] Hot pressing mechanism 600, mounting frame 610, hot pressing roller 620, compensation assembly 630, connecting member 631, first pressing roller 632, second pressing roller 633, cutter assembly 640, cutter 641;

[0047] The upper diaphragm is rolled up 10, and the lower diaphragm is rolled up 20. DETAILED DESCRIPTION

[0048] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of the present invention, "several" means one or more, "multiple" means more than two, greater than, less than, and exceeding are understood as not including the number itself, and "above", "below", and "within" are understood as including the number itself. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0050] In the description of the present invention, unless otherwise clearly defined, words such as “setting”, “installation” and “connection” should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0051] refer to Figures 1 to 10 An automatic unwinding machine, a double-winding and double-unwinding coating production line and an automatic unwinding method according to embodiments of the present invention are described.

[0052] like Figure 1 and Fig.10 As shown, the automatic unwinding machine according to the first embodiment of the present invention includes a frame 100; a rotating frame 200, which is rotatably arranged on the frame 100; two fixed frames 300, which are symmetrically arranged on the rotating frame 200, and the fixed frames 300 are used to fix the coil drum, and the rotating frame 200 is used to drive the two fixed frames 300 to exchange positions; a clamping mechanism 400, each fixed frame 300 is provided with a clamping mechanism 400, and the clamping mechanism 400 is located on the side of the corresponding fixed frame 300 away from the other fixed frame 300, and the two clamping mechanisms 400 are symmetrically arranged on the rotating frame 200, and the clamping mechanism 400 is provided on the rotating frame 200. The mechanism 400 is used to fix the starting end of the diaphragm; the tensioning mechanism 500 is arranged on the frame 100, the tensioning mechanism 500 is located on one side of the rotating frame 200, and the tensioning mechanism 500 is used to adjust the tension of the diaphragm; the hot pressing mechanism 600, the hot pressing mechanism 600 is movably arranged on the frame 100, the hot pressing mechanism 600 cooperates with the clamping mechanism 400 to heat and press the diaphragm of one fixed frame 300 to the diaphragm of another fixed frame 300, and then the hot pressing mechanism 600 cuts off the diaphragm of one fixed frame 300; the rotating frame 200, the hot pressing mechanism 600 and the tensioning mechanism 500 are arranged in sequence along the conveying path of the diaphragm.

[0053] like Figure 1As shown, a rotating frame 200, a hot pressing mechanism 600 and a tensioning mechanism 500 are sequentially arranged on the frame 100 along the conveying path direction of the diaphragm, wherein two fixed frames 300 are symmetrically arranged on the rotating frame 200, and the two fixed frames 300 can rotate in the same direction under the action of the rotating frame 200. A clamping mechanism 400 is arranged on the side of each fixed frame 300 away from the other fixed frame 300, and the clamping mechanism 400 can clamp the beginning of the diaphragm so that the diaphragm between the fixed frame 300 and the clamping mechanism 400 is in a tensioned state. The hot pressing mechanism 600 is movably arranged on the frame 100, and it can press the diaphragm of one of the fixed frames 300 onto the diaphragm of the other fixed frame 300. The tensioning mechanism 500 is located on one side of the hot pressing mechanism 600, and it can adjust the tension of the diaphragm winding to avoid wrinkles in the diaphragm during transportation.

[0054] Replace the new roll onto the idle fixed frame 300, fix the starting end of the next roll of diaphragm 20 on the new roll onto the corresponding clamping mechanism 400, rotate the rotating frame 200 to exchange the positions of the two fixed frames 300, so that the diaphragm to be unwound is located above the next roll of diaphragm 20, and the hot pressing mechanism 600 cooperates with the clamping mechanism 400 to press the diaphragm to be unwound on one of the fixed frames 300 onto the next roll of diaphragm 20 on the other fixed frame 300. The hot pressing mechanism 600 heats and melts the diaphragm to be unwound and presses it onto the next roll of diaphragm 20, and then cuts the diaphragm to be unwound. Therefore, by automatically heating and pressing the diaphragm that is about to be unwound onto the new diaphragm, the automatic replacement of the winding drum is realized, avoiding the tedious manual operation and time cost, and the hot pressing technology is used for connection, avoiding the problem of decreased bonding strength caused by the adhesive losing viscosity or chemical changes at high temperature, thereby reducing shedding or degumming and improving production efficiency and quality.

[0055] It should be noted that in this specific embodiment, the diaphragm is a diaphragm. By preheating the diaphragm after unwinding, the flatness of the diaphragm can be improved. In the prior art, a preheating process is usually set between the unwinding process and the coating process to help improve the quality and consistency of the coating process. The present invention can preheat the overlapping part of the new roll of diaphragm 10 while connecting through hot pressing. Before entering the preheating process, the temperature of the overlapping part can be made more uniform, reducing the heat difference caused by thickness, thereby helping to reduce the flatness difference between the overlapping part and other single-layer parts in the preheating process.

[0056] To simplify the description, the diaphragm that is about to be unwound is referred to as the diaphragm 10 in the previous roll hereinafter.

[0057] In some specific embodiments of the present invention, the hot pressing mechanism 600 includes: a mounting frame 610, which is movably mounted on the frame 100; a hot pressing roller 620, which is rotatably mounted on the mounting frame 610, and is used to fix the diaphragm of one fixing frame 300 to the upper end of the diaphragm of another fixing frame 300; a compensation component 630, which is rotatably mounted on the mounting frame 610, and is used to adjust the position of the diaphragm so that only part of the diaphragm can move in a direction opposite to the conveying path; a cutter component 640, which is movably connected to the mounting frame 610, and is used to cut the diaphragm.

[0058] like Figure 1 and Figure 2 As shown, the mounting frame 610 is movably disposed on the frame 100 , and the hot pressing roller 620 , the compensation assembly 630 and the cutter assembly 640 are all disposed on the mounting frame 610 , wherein the hot pressing roller 620 , the compensation assembly 630 and the cutter assembly 640 are all rotatably connected to the mounting frame 610 . Thus, the new roll is replaced on the idle fixed frame 300, the starting ends of the next roll of diaphragm 20 on the new roll are fixed on the corresponding clamping mechanism 400, the rotating frame 200 is rotated to exchange the positions of the two fixed frames 300, so that the previous roll of diaphragm 10 is located above the next roll of diaphragm 20, and the mounting frame 610 is moved in the direction close to the previous roll of diaphragm 10, so that the hot pressing roller 620 and the compensation assembly 630 press the previous roll of diaphragm 10 of one fixed frame 300 onto the next roll of diaphragm 20 of the other fixed frame 300, until the hot pressing roller 620 and the compensation assembly 630 heat and melt the previous roll of diaphragm 10 and press it on the upper end of the next roll of diaphragm 20, connect the previous roll of diaphragm 10 to the next roll of diaphragm 20, and use the cutter assembly 640 to cut off the previous roll of diaphragm 10 to complete the automatic replacement of the new previous roll of diaphragm 10.

[0059] In some specific embodiments of the present invention, the compensation component 630 includes: a connecting member 631, the connecting member 631 is rotatably disposed on the mounting frame 610, the connecting member 631 is rotatably connected to the hot pressure roller 620, the connecting member 631 has a first end and a second end, the first end and the second end are respectively located on both sides of the hot pressure roller 620; a first pressure roller 632, the first pressure roller 632 is rotatably disposed at the first end, the first pressure roller 632 can abut against the diaphragm; a second pressure roller 633, the second pressure roller 633 is rotatably disposed at the second end, the second pressure roller 633 can abut against the diaphragm, and the connecting member 631 is used to drive the first pressure roller 632 to abut against the diaphragm, and drive the second pressure roller 633 to abut and separate from the diaphragm.

[0060] like Figure 1 and Figure 2As shown, in this specific embodiment, the connecting member 631 is a connecting plate mounted on the front and rear ends of the hot pressing roller 620, the two connecting plates are symmetrically arranged, and each connecting plate extends toward both sides of the hot pressing roller 620 to form a first end and a second end, a first pressing roller 632 is arranged between the two first ends arranged front and back, and a second pressing roller 633 is arranged between the two second ends arranged front and back, and the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 are all arranged along the front and rear direction so that the diaphragm can be wound around the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 in sequence.

[0061] After the positions of the two fixing frames 300 are exchanged, the mounting frame 610 is moved toward the direction close to the previous roll of diaphragm 10, so that the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 press the previous roll of diaphragm 10 of one fixing frame 300 onto the next roll of diaphragm 20 of the other fixing frame 300, until the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 press the previous roll of diaphragm 10 onto the upper end of the next roll of diaphragm 20 in sequence along the conveying path of the diaphragm, and the hot pressing roller 620 heats and melts the previous roll of diaphragm 10 and presses it onto the next roll of diaphragm 20. A hot pressing line is formed on a roll of diaphragm 20, and the rotating connecting piece 631 drives the first pressing roller 632 and the second pressing roller 633 to rotate in the same direction. The first pressing roller 632 descends, and the second pressing roller 633 rises and separates from the previous roll of diaphragm 10. The rotation of the connecting piece 631 drives the hot pressing line to move in the direction opposite to the diaphragm conveying path. The hot pressing roller 620 presses the previous roll of diaphragm 10 on the right side of the hot pressing line onto the next roll of diaphragm 20 in the direction opposite to the diaphragm conveying path until the starting end of the next roll of diaphragm 20 is connected with the previous roll of diaphragm 10. Then the cutter assembly 640 cuts off the previous roll of diaphragm 10 and pulls the next roll of diaphragm 20 to the right, and the hot pressing roller 620 presses the previous roll of diaphragm 10 onto the next roll of diaphragm 20 along the direction of the diaphragm conveying path, that is, the previous roll of diaphragm 10 cut off by the cutter assembly 640 at the left end of the hot pressing line is pressed onto the next roll of diaphragm 20. When the end of the previous roll of diaphragm 10 is hot-pressed with the next roll of diaphragm 20, the mounting frame 610 is moved away from the next roll of diaphragm 20 so that the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 are separated from the next roll of diaphragm 20, thereby completing the automatic replacement of the previous roll of diaphragm 10 with the next roll of diaphragm 20.

[0062] It should be noted that when the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 press the upper roll of diaphragm 10 onto the upper end of the next roll of diaphragm 20 in sequence along the conveying path of the diaphragm, the hot pressing roller 620 cooperates with the clamping mechanism 400, and the first pressing roller 632 and the second pressing roller 633 rotate around the axis of the hot pressing roller 620. During the rotation of the first pressing roller 632 and the second pressing roller 633, the paths of the diaphragm wrapped around the first pressing roller 632 and the second pressing roller 633 compensate each other. Specifically, before rotation, the second pressing roller 633 is located below the first pressing roller 632 and the hot pressing roller 620, and the hot pressing roller 620 cooperates with the clamping mechanism 400 to hot press the new roll of diaphragm 10 and form a hot pressing line on the new roll of diaphragm 10. As the connecting piece 631 rotates, the first pressing roller 632 rotates downward, and the second pressing roller 633 rises upward and separates from the diaphragm. At this time, the hot pressing line moves in the opposite direction to the left, and at the same time pulls the diaphragm on the right side of the hot pressing line to move in the opposite direction. Under the action of the hot pressing roller 620 and the clamping mechanism 400, the next roll of diaphragm 20 originally clamped on the clamping mechanism 400 is completely pressed onto the previous roll of diaphragm 10. Furthermore, the thickness of the membrane at the lower end of the hot pressing roller 620 can be identified by the sensor, that is, when the membrane thickness at the lower end of the hot pressing roller 620 decreases sharply, the beginning of the next membrane roll 20 is connected with the previous membrane roll 10, and the sensor can transmit a signal to the control center, and then the cutter assembly 640 cuts off the previous membrane roll 10, and the next membrane roll 20 continues to be pulled to the right until the end of the previous membrane roll 10 is hot pressed with the next membrane roll 20. As a result, the beginning of the next membrane roll 20 can be completely pressed on the previous membrane roll 10, and the cut end of the previous membrane roll 10 can be completely pressed on the next membrane roll 20, so as to realize the continuity of the production process, effectively utilize the end of the previous membrane roll 10 and the beginning of the next membrane roll 20, reduce the generation of waste, and improve production efficiency and resource utilization.

[0063] It should be noted that, due to the compensating effect of the first pressing roller 632 and the second pressing roller 633 , during the rotation of the connecting member 631 , the diaphragm wound around the old reel, the new reel and the tensioning mechanism 500 does not move in any direction.

[0064] In some specific embodiments of the present invention, the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 are arranged in the same direction and in a triangular arrangement to further ensure the synergistic effect of the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 when connecting a new roll of diaphragm 10, thereby achieving uniform pressing of the diaphragm.

[0065] In some specific embodiments of the present invention, the first pressing roller 632 is a preheating roller. On the one hand, the first pressing roller 632 is located upstream of the hot pressing roller 620. As a preheating roller, it can preheat the previous roll of diaphragm 10 and the next roll of diaphragm 20 to make the diaphragm reach a suitable temperature and reduce the temperature shock during the production process. On the other hand, the second pressing roller 633 can preheat the diaphragm before it enters the subsequent processing stage, thereby saving the energy consumption of the subsequent heating equipment and reducing the production cost.

[0066] In some specific embodiments of the present invention, the clamping mechanism 400 includes: a first clamping roller 410, which is rotatably disposed on the rotating frame 200, and a second clamping roller 420, which is movably disposed on the rotating frame 200, and the second clamping roller 420 is located between the first clamping roller 410 and the fixed frame 300, and there is a gap between the first clamping roller 410 and the second clamping roller 420, and the second clamping roller 420 is used to adjust the size of the gap to adapt to the thickness of the diaphragm.

[0067] like Figure 1 and Figure 3 As shown, the first clamping roller 410 and the second clamping roller 420 are rotatably arranged on the rotating frame 200, the second clamping roller 420 is located between the first clamping roller 410 and the corresponding fixed frame 300, and the second clamping roller 420 can move on the rotating frame 200 to control the size of the gap between the first clamping roller 410 and the second clamping roller 420. When a new roll is replaced on the idle fixed frame 300, it is necessary to pass the beginning of the next roll of diaphragm 20 through the gap between the first clamping roller 410 and the second clamping roller 420, and adjust the second clamping roller 420 so that the next roll of diaphragm 20 is fixed between the first clamping roller 410 and the second clamping roller 420.

[0068] In some specific embodiments of the present invention, two groups of transition rollers 210 are symmetrically arranged on the rotating frame 200, and the two groups of transition rollers 210 and the two fixed frames 300 are arranged in a cross shape. Furthermore, each group of transition rollers 210 may be provided with one, two or more transition rollers 210. Figure 6 As shown, when the rotating frame 200 rotates to exchange the position of the fixed frame 300, the diaphragm on the previous roll of diaphragm 10 is wound around the first clamping roller 410 and the transition roller 210 in sequence, so that the previous roll of diaphragm 10 is located above the next roll of diaphragm 20.

[0069] In some specific embodiments of the present invention, the diameter of the second clamping roller 420 is smaller than the diameter of the first clamping roller 410 to prevent the second clamping roller 420 from interfering with the winding path of the previous roll of the diaphragm 10 .

[0070] In some specific embodiments of the present invention, the cutter assembly 640 includes: a cutter 641, which is movably disposed on the first pressure roller 632, and the cutter 641 is used to cut the diaphragm; a driving member, which is disposed on the mounting frame 610, connected to the cutter 641, and used to drive the cutter 641 to approach and move away from the diaphragm.

[0071] The cutter 641 is movably arranged on the mounting frame 610, and the setting direction of the cutter 641 is parallel to the first pressure roller 632. The output end of the driving member is connected to the cutter 641, and the driving member drives the cutter 641 to rotate toward the previous roll of diaphragm 10, so as to cut the diaphragm with the help of the blade of the cutter 641. Specifically, the cutter 641 is movably arranged on the connecting member 631, and a rotating shaft is rotatably arranged on the connecting member 631 through a bearing member. One end of the cutter 641 is fixed on the rotating shaft, and the other end of the cutter 641 is provided with a downward blade. A connecting rod perpendicular to the rotating shaft is fixed to the end of the rotating shaft. The driving member adopts a cylinder, and the driving member is rotatably arranged on the connecting member 631 through a pin shaft and other structures. The output shaft is hinged with the connecting rod, and the output shaft of the driving member can perform telescopic movement, thereby driving the connecting rod to rotate around the rotating shaft and driving the rotating shaft to rotate together, thereby driving the cutter 641 to rotate, so that the blade of the cutter 641 can rotate toward the diaphragm and cut the diaphragm.

[0072] In some specific embodiments of the present invention, the tensioning mechanism 500 includes: a tension roller 510, which is fixed on the frame 100; and a floating roller 520, which is movably arranged on the frame 100. The tension roller 510 and the floating roller 520 are arranged in sequence along the conveying path of the diaphragm, and the diaphragm is wound around the tension roller 510 and the floating roller 520 in sequence. The tension roller 510 is used to detect the tension of the diaphragm, and the floating roller 520 is used to adjust the tension force of the diaphragm.

[0073] like Figures 5 to 10 As shown, a tension roller 510 and a floating roller 520 are also provided on the frame 100 along the conveying path of the diaphragm. The diaphragm is wound with the tension roller 510 and the floating roller 520. The tension roller 510 is used to detect the tension. A connecting seat 530 is also included. The floating roller 520 is arranged on the connecting seat 530. A cylinder is provided on the frame 100. The piston rod of the cylinder is connected to the connecting seat 530. The connecting seat 530 is controlled to move by the cylinder, thereby driving the floating roller 520 to move together, which can absorb the tension of the diaphragm, thereby achieving the function of adjusting the tension.

[0074] A tension roller 510 and a floating roller 520 are also provided on the frame 100 along the conveying path of the diaphragm. The diaphragm passes around the tension roller 510 and the floating roller 520 in sequence, wherein the tension roller 510 is used to monitor the magnitude of the tension. In addition, a connecting seat 530 is also provided on the frame 100, and the floating roller 520 is mounted on the connecting seat 530. Specifically, the connecting seat 530 is movably connected to the frame 100 through a cylinder, and the connecting seat 530 can move on the frame 100, thereby driving the floating roller 520 to move together. Thus, the tension roller 510 monitors the magnitude of the tension of the diaphragm wound thereon, and transmits a signal to the floating roller 520 so that the floating roller 520 absorbs the tension change of the diaphragm, thereby realizing the function of adjusting the tension force, thereby ensuring that the diaphragm maintains appropriate tension during the conveying process, and realizing a stable and efficient production process.

[0075] According to the second aspect of the embodiment of the present invention, the double-winding and double-unwinding coating production line includes two groups of continuous coating processing equipment, one of which is arranged above the other continuous coating processing equipment, and the two groups of continuous coating processing equipment are arranged in a mirror image. The continuous coating processing equipment includes a preheater, a sprayer, a dryer, a surface changer, a winder, and an automatic unwinder. The automatic unwinder, preheater, sprayer, dryer, surface changer and winder are arranged in sequence.

[0076] like Figure 4 As shown, the automatic unwinding method according to the third aspect of the present invention includes:

[0077] S1: Figure 5 As shown, a new roll is replaced on the idle fixing frame 300, and the beginning of the next roll of diaphragm 20 is fixed on the corresponding clamping mechanism 400;

[0078] S2: Figure 6 As shown, the rotating frame 200 is rotated to exchange the positions of the two fixed frames 300 so that the upper roll of the diaphragm 10 is located above the lower roll of the diaphragm 20;

[0079] S3: Figure 7 As shown, the mounting frame 610 is moved toward the direction close to the previous roll of diaphragm 10, so that the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 press the previous roll of diaphragm 10 of one fixing frame 300 onto the next roll of diaphragm 20 of the other fixing frame 300, until the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 press the previous roll of diaphragm 10 onto the upper end of the next roll of diaphragm 20 in sequence along the conveying path of the diaphragm, and the hot pressing roller 620 heats and melts the previous roll of diaphragm 10 and presses it onto the next roll of diaphragm 20, forming a hot pressing line;

[0080] S4: Figure 8As shown, the rotating connecting member 631 drives the first pressing roller 632 and the second pressing roller 633 to rotate in the same direction, the second pressing roller 633 is separated from the previous roll of diaphragm 10, and drives the hot pressing line to move in the direction opposite to the diaphragm conveying path, and the hot pressing roller 620 presses the previous roll of diaphragm 10 onto the next roll of diaphragm 20 in the direction opposite to the diaphragm conveying path until the beginning of the next roll of diaphragm 20 is fixedly connected to the previous roll of diaphragm 10;

[0081] S5: Fig. 9 As shown, the cutter assembly 640 is used to cut the previous roll of diaphragm 10, and the next roll of diaphragm 20 is pulled along the diaphragm conveying path. The hot pressing roller 620 presses the previous roll of diaphragm 10 onto the next roll of diaphragm 20 along the direction of the diaphragm conveying path until the end of the previous roll of diaphragm 10 is fixedly connected to the next roll of diaphragm 20;

[0082] S6: Fig.10 As shown, the next roll of diaphragm 20 is pulled and the mounting frame 610 is moved away from the next roll of diaphragm 20 so that the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 are separated from the next roll of diaphragm 20, thereby completing the automatic replacement of the previous roll of diaphragm 10 and the next roll of diaphragm 20.

[0083] In some specific embodiments of the present invention, in S3 , the first pressing roller 632 and the hot pressing roller 620 are at the same height, and the second pressing roller 633 is lower than the first pressing roller 632 and the hot pressing roller 620 .

[0084] In some specific embodiments of the present invention, in S4 , the second pressing roller 633 and the hot pressing roller 620 are at the same height, and the first pressing roller 632 is lower than the hot pressing roller 620 and the second pressing roller 633 .

[0085] In some specific embodiments of the present invention, in S3 and S4, the distance between the axis of the first pressing roller 632 and the axis of the hot pressing roller 620 is a, and the distance between the axis of the second pressing roller 633 and the axis of the hot pressing roller 620 is b, wherein a=b.

[0086] In some specific embodiments of the present invention, in S6, the tensioning mechanism 500 is used to adjust the tension of the diaphragm so that the diaphragm can be smoothly conveyed along the conveying path.

[0087] The following is a specific example to illustrate the automatic unwinding method:

[0088] S1: Replace a new roll onto the left fixing frame 300 , and fix the beginning of the next roll of diaphragm 20 between the corresponding first clamping roller 410 and the second clamping roller 420 .

[0089] S2: Rotate the rotating frame 200 counterclockwise by 180° to exchange the positions of the two fixed frames 300, so that the previous roll of diaphragm 10 is located on the left and the next roll of diaphragm 20 is located on the right, and the diaphragm on the previous roll of diaphragm 10 is wound around the first clamping roller 410 and the transition roller 210 in sequence, so that the previous roll of diaphragm 10 is located above the next roll of diaphragm 20.

[0090] S3: Move the mounting frame 610 downward so that the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 press the previous roll of diaphragm 10 onto the next roll of diaphragm 20, until the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 press the previous roll of diaphragm 10 onto the upper end of the next roll of diaphragm 20 in sequence to the right, and the hot pressing roller 620 heats and melts the previous roll of diaphragm 10 and presses it onto the next roll of diaphragm 20 to form a hot pressing line.

[0091] It should be noted that the first pressing roller 632 and the hot pressing roller 620 are at the same height, and the second pressing roller 633 is lower than the first pressing roller 632 and the hot pressing roller 620 .

[0092] S4: Rotate the connecting piece 631 counterclockwise to drive the first pressing roller 632 to be lower than the hot pressing roller 620 and the second pressing roller 633, and the height of the second pressing roller 633 and the hot pressing roller 620 to be level, and the second pressing roller 633 is separated from the previous roll of diaphragm 10. Under the rotation of the mounting frame 610 and driving the hot pressing line to move to the left, the hot pressing roller 620 presses the previous roll of diaphragm 10 onto the next roll of diaphragm 20 until the starting end of the next roll of diaphragm 20 is fixedly connected to the previous roll of diaphragm 10.

[0093] S5: The driving member drives the cutter 641 to cut the previous roll of diaphragm 10, and pulls the next roll of diaphragm 20 to the right, and the hot pressing roller 620 presses the previous roll of diaphragm 10 onto the next roll of diaphragm 20 along the direction of the diaphragm conveying path until the end of the previous roll of diaphragm 10 is fixedly connected to the next roll of diaphragm 20;

[0094] S6: Raise the mounting frame 610 to separate the first pressing roller 632, the hot pressing roller 620 and the second pressing roller 633 from the next roll of diaphragm 20, and use the tensioning mechanism 500 to adjust the tension of the diaphragm so that the diaphragm can be smoothly conveyed along the conveying path, thereby completing the automatic replacement of the previous roll of diaphragm 10 with the next roll of diaphragm 20.

[0095] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An automatic unwinding machine, characterized in that: include: frame; A rotating frame, the rotating frame is rotatably arranged on the frame; Two fixed frames, the two fixed frames are symmetrically arranged on the rotating frame, the fixed frames are used to fix the coil drum, and the rotating frame is used to drive the two fixed frames to exchange positions; A clamping mechanism, each of the fixed frames is provided with the clamping mechanism, the clamping mechanism is located on the side of the corresponding fixed frame away from the other fixed frame, the two clamping mechanisms are centrally symmetrically arranged on the rotating frame, the clamping mechanism is used to fix the starting end of the diaphragm, the clamping mechanism comprises a first clamping roller and a second clamping roller, the first clamping roller is rotatably arranged on the rotating frame, the second clamping roller is movably arranged on the rotating frame, the second clamping roller is located between the first clamping roller and the fixed frame, there is a gap between the first clamping roller and the second clamping roller, and the second clamping roller is used to adjust the size of the gap to adapt to the thickness of the diaphragm; A tensioning mechanism, the tensioning mechanism is arranged on the frame, the tensioning mechanism is located on one side of the rotating frame, and the tensioning mechanism is used to adjust the tension of the diaphragm; A heat pressing mechanism, wherein the heat pressing mechanism is movably arranged on the frame, and after the heat pressing mechanism cooperates with the clamping mechanism to heat and press the diaphragm of one of the fixing frames onto the diaphragm of the other fixing frame, the heat pressing mechanism cuts off the diaphragm of one of the fixing frames; The rotating frame, the hot pressing mechanism and the tensioning mechanism are arranged in sequence along a conveying path of the diaphragm.

2. The automatic unwinding machine according to claim 1, characterized in that: The diameter of the second clamping roller is smaller than the diameter of the first clamping roller.

3. The automatic unwinding machine according to claim 1, characterized in that: The tensioning mechanism comprises: A tension roller, the tension roller is fixed on the frame; A floating roller, wherein the floating roller is movably arranged on the frame, the tension roller and the floating roller are sequentially arranged along the conveying path of the diaphragm, the diaphragm is sequentially wound around the tension roller and the floating roller, the tension roller is used to detect the tension of the diaphragm, and the floating roller is used to adjust the tensioning force of the diaphragm.

4. The automatic unwinding machine according to any one of claims 1 to 3, characterized in that: The hot pressing mechanism comprises: A mounting frame, the mounting frame being movably disposed on the frame; A hot pressing roller, the hot pressing roller is rotatably arranged on the mounting frame, and the hot pressing roller is used to fix the diaphragm of one of the mounting frames to the upper end of the diaphragm of the other mounting frame; A compensation component, the compensation component is rotatably disposed on the mounting frame, and the compensation component is used to adjust the position of the diaphragm so that only a portion of the diaphragm can move in a direction opposite to the conveying path; A cutter assembly is movably connected to the mounting frame and is used for cutting off the diaphragm.

5. The automatic unwinding machine according to claim 4, characterized in that: The compensation component comprises: A connecting member, the connecting member is rotatably disposed on the mounting frame, the connecting member is rotatably connected to the hot pressing roller, the connecting member has a first end and a second end, the first end and the second end are respectively located on two sides of the hot pressing roller; a first pressing roller, the first pressing roller being rotatably disposed at the first end, and the first pressing roller being capable of abutting against the diaphragm; The second pressing roller is rotatably arranged at the second end, the second pressing roller can abut against the diaphragm, and the connecting member is used to drive the first pressing roller to abut against the diaphragm, and drive the second pressing roller to abut against and separate from the diaphragm.

6. The automatic unwinding machine according to claim 5, characterized in that: The cutter assembly comprises: A cutter, the cutter being movably disposed on the first pressing roller and being used for cutting off the diaphragm; A driving member is disposed on the mounting frame, the driving member is connected to the cutter, and the driving member is used to drive the cutter to approach and move away from the diaphragm.

7. The automatic unwinding machine according to claim 6, characterized in that: The first pressing roller, the hot pressing roller and the second pressing roller are arranged in the same direction and in a triangular arrangement.

8. The automatic unwinding machine according to claim 6, characterized in that: The first pressing roller is a preheating roller.

9. An automatic unwinding method, using the automatic unwinding machine as claimed in claim 6, characterized in that: include: S1: Replace a new roll onto an idle fixed frame, and fix the beginning of the next roll of diaphragm onto the corresponding clamping mechanism; S2: rotating the rotating frame to exchange the positions of the two fixed frames so that the upper roll of diaphragm is located above the lower roll of diaphragm; S3: moving the mounting frame toward the direction approaching the previous roll of diaphragm, so that the first pressing roller, the hot pressing roller and the second pressing roller press the previous roll of diaphragm of one of the mounting frames onto the next roll of diaphragm of the other mounting frame, until the first pressing roller, the hot pressing roller and the second pressing roller press the previous roll of diaphragm onto the upper end of the next roll of diaphragm in sequence along the conveying path of the diaphragm, and the hot pressing roller heats and melts the previous roll of diaphragm and presses it onto the next roll of diaphragm to form a hot pressing line; S4: rotating the connecting member to drive the first pressing roller and the second pressing roller to rotate in the same direction, the second pressing roller is separated from the previous roll of diaphragm, and drives the hot pressing line to move in a direction opposite to the diaphragm conveying path, the hot pressing roller presses the previous roll of diaphragm onto the next roll of diaphragm in a direction opposite to the diaphragm conveying path until the beginning of the next roll of diaphragm is fixedly connected to the previous roll of diaphragm; S5: using the cutter assembly to cut the previous roll of diaphragm, pulling the next roll of diaphragm along the diaphragm conveying path, and the hot pressing roller presses the previous roll of diaphragm onto the next roll of diaphragm along the direction of the diaphragm conveying path until the end of the previous roll of diaphragm is fixedly connected to the next roll of diaphragm; S6: Pull the next roll of diaphragm and move the mounting frame in a direction away from the next roll of diaphragm so that the first pressing roller, the hot pressing roller and the second pressing roller are separated from the next roll of diaphragm, thereby completing the automatic replacement of the previous roll of diaphragm with the next roll of diaphragm.

10. The automatic unwinding method according to claim 9, characterized in that: In S3, the first pressing roller and the hot pressing roller are at the same height, and the second pressing roller is lower than the first pressing roller and the hot pressing roller.

11. The automatic unwinding method according to claim 9, characterized in that: In S4, the second pressing roller and the hot pressing roller are at the same height, and the first pressing roller is lower than the hot pressing roller and the second pressing roller.

12. The automatic unwinding method according to claim 9, characterized in that: In S3 and S4, the distance between the axis center of the first pressing roller and the axis center of the hot pressing roller is a, and the distance between the axis center of the second pressing roller and the axis center of the hot pressing roller is b, wherein a=b.

13. The automatic unwinding method according to claim 9, characterized in that: In S6, the tensioning mechanism is used to adjust the tension of the diaphragm so that the diaphragm can be smoothly conveyed along the conveying path.

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