A preparation method of Hongbao hot melt film

Abstract

The present invention relates to the technical field of hot melt adhesive Hongbao, and specifically to a method for preparing a Hongbao hot melt adhesive sheet, comprising the following steps: S1, unwinding a mesh cloth; S2, performing a first coating on the mesh cloth and cooling the coated mesh cloth; S3, flipping the mesh cloth after the first coating through a device and flattening the flipped mesh cloth; S4, heating the mesh cloth and performing a second coating to complete the production; wherein the device for flipping and flattening the mesh cloth in S3 is a flattening device, which is arranged on a bracket and includes an induction trigger component, a first roller, a second roller, a first rotary drive, a feedback component, a flipping tube, a first placement rack, a clamping component, and a transmission component. The present application improves the yield rate of Hongbao by providing the flattening device.

Description

Technical Field

[0001] The present invention relates to the technical field of hot melt adhesives, and in particular to a method for preparing a hot melt adhesive sheet. Background Art

[0002] Gangbao is a hard lining material used to support and shape the toe and back surfaces of athletic shoes and leather shoes. Some hot-melt adhesive Gangbaos use a non-woven fabric as the mesh. The process involves extruding a hot-melt adhesive onto the mesh surface, also known as laminating, or laminating the mesh separately on both sides. However, traditional double-layered hot-melt adhesive Gangbaos suffer from inconsistent physical and chemical properties due to the time lag between laminations, which inevitably leads to weak bonds and defects such as cracking. Furthermore, the process is complex and inefficient.

[0003] Chinese patent CN201510635174.X discloses a method for preparing a Hongbao hot melt adhesive sheet, including: unwinding, flattening the mesh cloth and conveying it between the pressure roller and the shaping roller of the first shaping roller group; first laminating, casting the molten hot melt adhesive onto one side of the mesh cloth, and the pressure roller of the first shaping roller group rolls the mesh cloth from the side where the hot melt adhesive is cast, so that the hot melt adhesive is evenly covered to form a first hot melt adhesive film, and the thickness of the first hot melt adhesive film is 0.05-0.2 mm; flipping and conveying, guiding the flipping direction of the mesh cloth after the first lamination and adjusting the tension, keeping it flat and conveying it between the pressure roller and the shaping roller of the second shaping roller group; secondary laminating, extruding the molten hot melt adhesive onto the other side of the flipped mesh cloth for secondary lamination, and the second shaping The pressing roller of the roller group rolls the middle mesh cloth from the side where the first hot melt adhesive film is formed, so that the hot melt adhesive material of the secondary coating is evenly covered on the other side of the middle mesh cloth, and the shaping roller of the second shaping roller group cools the hot melt adhesive material of the secondary coating to form a second hot melt adhesive film. The surface of the shaping roller of the second shaping roller group is formed with a mold body, and the mold body is circumferentially concave with a mold cavity, and the mold body is concave with a discharge groove on the outer edge of the mold cavity; when the secondary lamination step is performed, the hot melt adhesive material of the secondary coating is rolled and formed into a hot melt adhesive shape in the mold body, and the thickness of the second hot melt adhesive film is not more than 1.3 mm; cooling and shaping, the cooling rollers are simultaneously performed on both sides of the middle mesh cloth where the second hot melt adhesive film is formed, so that the first hot melt adhesive film and the second hot melt adhesive film are cooled and shaped to form a hot melt adhesive sheet.

[0004] While the above solution proposes a method for producing Gangbao, it cannot ensure that the semi-finished product after the first coating is kept in a tight state during the rotation and conveying, which will affect the effect of the second coating. The key to the success of Gangbao production lies in the second coating. Therefore, the technical problem of how to achieve automation while ensuring the effect of the second coating and thus improve the yield rate of Gangbao is raised. Summary of the Invention

[0005] Based on this, it is necessary to provide a preparation method of Hongbao hot melt film for existing technical problems, including the following steps: S1, unwinding the mesh cloth; S2, performing the first lamination on the mesh cloth and cooling the mesh cloth after lamination; S3, flipping the mesh cloth after the first lamination through a device, and flattening the flipped mesh cloth; S4, heating the mesh cloth, performing the second lamination to complete the production; wherein the device for flipping and flattening the mesh cloth in S3 is a flattening device, which is arranged on a bracket, and the flattening device includes an induction trigger component, a first roller, a second roller, a first rotary drive, a feedback component, a flip tube, and a first placement rack , a clamping assembly and a transmission assembly; there are two first placement racks, and the two first placement racks are arranged opposite to each other; the first rotation driver is fixedly arranged on the first placement rack; the first roller is fixedly arranged on the output end of the first rotation driver; the second roller is rotatably arranged on one side of the first roller; the flip tube is a semicircular tubular structure, and the flip tube is arranged on one side of the bracket; the feedback assembly is arranged on the inner wall of the flip tube; the induction trigger assembly is arranged on the inner wall of the flip tube near one end of the first roller; the clamping assembly is arranged on the two first placement racks, for driving the two first placement racks to move toward or away from each other; the two ends of the transmission assembly are respectively arranged on the first roller and the second roller.

[0006] Preferably, the induction trigger component includes a signal transmitter, a signal receiver and a first fixed plate; the signal transmitter is arranged on the inner wall of the flip tube near one end of the first roller; the first fixed plate is fixedly arranged on the outer wall of the flip tube below the signal transmitter; the signal receiver is fixedly arranged on the upper part of the first fixed plate along the signal emission direction of the signal transmitter.

[0007] Preferably, the feedback component includes a third roller and a first pressure sensor; a plurality of third rollers are provided, and the third rollers are evenly arranged on the inner wall of the flip tube around the axis of the flip tube; the first pressure sensor is fixedly provided on the outer wall of the third roller.

[0008] Preferably, it also includes a moving mechanism, which is arranged on a bracket, and the moving mechanism includes a first slider, a screw rod, a second rotation driver, a guide assembly and a second placement rack; the second rotation driver is fixedly arranged on the bracket above the first placement rack; the screw rod is fixedly arranged on the output end of the second rotation driver; the guide assembly is arranged on one side of the screw rod; the first slider is slidably arranged on the screw rod along the axial direction of the screw rod; the second placement rack is fixedly arranged at the bottom of the first slider, the guide assembly is fixedly connected to the upper part of the second placement rack, and the first placement rack is arranged on the second placement rack.

[0009] Preferably, the clamping assembly includes a third rotary drive, a driving wheel, a first rack and a second rack; the third rotary drive is fixedly arranged on the side wall of the second placement rack, and the output end of the third rotary drive points to the first placement rack; the driving wheel is fixedly arranged on the output end of the third rotary drive; the first rack and the driving wheel are engaged with each other, and the first rack is fixedly arranged on the side wall of one of the first placement racks along the height direction of the bracket; the second rack is engaged with the side of the driving wheel away from the first rack, and the second rack is fixedly arranged on the side wall of the other first placement rack along the height direction of the bracket.

[0010] Preferably, the transmission assembly includes a first synchronous wheel, a second synchronous wheel and a synchronous belt; the first synchronous wheel is fixedly arranged on the end of the first roller away from the first rotation driver along the axis of the first roller; the second synchronous wheel is arranged on one end of the second roller on one side of the first synchronous wheel; the two ends of the synchronous belt are respectively engaged with the first synchronous wheel and the second synchronous wheel.

[0011] Preferably, the leveling device also includes a guide assembly, which is respectively arranged on the second placement rack and the first placement rack, and the guide assembly includes a second slider and a slide groove; the slide groove is opened on the side wall of the second placement rack along the height direction of the bracket; the second slider is fixedly arranged on the side wall of the first placement rack, and the second slider slides in cooperation with the slide groove.

[0012] Preferably, the guide assembly includes a guide rod and a third slider; the third slider is fixedly arranged on the upper part of the second placement rack; the guide rod is arranged on the third slider along the length direction of the bracket, the third slider is slidably matched with the guide rod, and the guide rod is fixedly arranged on the bracket.

[0013] Preferably, the leveling device further includes a second pressure sensor; a plurality of second pressure sensors are provided, and the second pressure sensors are respectively provided on the outer walls of the first roller and the second roller.

[0014] Preferably, the leveling device further includes a replacement mechanism, which includes a second fixing plate and a fixing hole; the second fixing plate is respectively arranged on the end of the first rack and the end of the second rack; the fixing hole is opened through the second fixing plate.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This application improves the yield rate of Gangbao by setting up a leveling device.

[0017] 2. This application realizes the function of automatically clamping the flipped middle mesh cloth by setting a signal transmitter, a signal receiver and a first fixing plate.

[0018] 3. This application realizes the technical requirement that the feedback component can sense whether the middle mesh cloth is tightened by setting the third roller and the first pressure sensor.

[0019] 4. This application realizes the position compensation function of the moving mechanism for the leveling device by setting a first slider, a screw rod, a second rotary driver, a guide assembly and a second placement rack.

[0020] 5. The present application realizes the clamping function of the clamping assembly by providing a third rotary drive, a driving wheel, a first rack and a second rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This application is a three-dimensional Figure 1 ;

[0022] Figure 2 This application is a three-dimensional Figure 2 ;

[0023] Figure 3 This application is a three-dimensional Figure 3 ;

[0024] Figure 4 This is a three-dimensional diagram of the flip tube provided with the induction trigger component and the feedback component of the present application;

[0025] Figure 5 This is an assembly stereogram of the present application after removing the induction trigger component, feedback component and flip tube;

[0026] Figure 6 It is a side view of the flip tube provided with the induction trigger component and the feedback component of the present application;

[0027] Figure 7 This application Figure 6 Cross-sectional view at AA in the middle;

[0028] Figure 8 This is an assembly stereogram of the present application after removing part of the bracket, the induction trigger component, the feedback component and the flip tube;

[0029] Figure 9 The assembled three-dimensional structure of the present invention after removing the bracket, part of the moving mechanism, the induction trigger component, the feedback component and the flip tube Figure 1 ;

[0030] Figure 10 The assembled three-dimensional structure of the present invention after removing the bracket, part of the moving mechanism, the induction trigger component, the feedback component and the flip tube Figure 2 ;

[0031] Figure 11 This is an assembly stereogram of the present application after removing the bracket, moving mechanism, induction trigger component, feedback component and flip tube;

[0032] Figure 12 It is a local stereoscopic Figure 1 ;

[0033] Figure 13 It is a local stereoscopic Figure 2 ;

[0034] Figure 14 This application Figure 13 A partial enlarged view of point B in the middle;

[0035] Figure 15 It is a local stereoscopic Figure 3 .

[0036] The numbers in the figure are:

[0037] 1- Bracket;

[0038] 2-moving mechanism; 2a-first slider; 2b-screw; 2c-second rotary drive; 2d-guide assembly; 2d1-guide rod; 2d2-third slider; 2e-second placement rack;

[0039] 3-leveling device; 3a-sensing trigger assembly; 3a1-signal transmitter; 3a2-signal receiver; 3a3-first fixed plate; 3b-first roller; 3c-second roller; 3d-first rotary drive; 3e-feedback assembly; 3e1-third roller; 3e2-first pressure sensor; 3f-flip tube; 3g-first placement rack; 3h-gripping assembly; 3h1-third rotary drive; 3h2-driving wheel; 3h3-first rack; 3h4-second rack; 3i-transmission assembly; 3i1-first synchronous wheel; 3i2-second synchronous wheel; 3i3-synchronous belt; 3j-guide assembly; 3j1-second slider; 3j2-slideway;

[0040] 4-Replacement mechanism; 4a-Second fixing plate; 4b-Fixing hole. DETAILED DESCRIPTION

[0041] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] like Figure 1-15 As shown, this application provides:

[0043] A method for preparing a Hong Kong hot melt adhesive sheet, comprising the following steps: S1, unwinding a mesh cloth; S2, performing a first lamination on the mesh cloth and cooling the mesh cloth after lamination; S3, flipping the mesh cloth after the first lamination through a device, and flattening the flipped mesh cloth; S4, heating the mesh cloth and performing a second lamination to complete the production; wherein the device for flipping and flattening the mesh cloth in S3 is a flattening device 3, the flattening device 3 is arranged on a bracket 1, and the flattening device 3 includes an induction trigger component 3a, a first roller 3b, a second roller 3c, a first rotary driver 3d, a feedback component 3e, a flip tube 3f, a first placement rack 3g, a clamping component 3h and a transmission component 3i; the first placement rack 3g is provided There are two, two first placement racks 3g are arranged opposite to each other; the first rotation driver 3d is fixedly set on the first placement rack 3g; the first roller 3b is fixedly set on the output end of the first rotation driver 3d; the second roller 3c is rotatably set on one side of the first roller 3b; the flip tube 3f is a semicircular tubular structure, and the flip tube 3f is set on one side of the bracket 1; the feedback component 3e is set on the inner wall of the flip tube 3f; the induction trigger component 3a is set on the inner wall of the flip tube 3f close to the end of the first roller 3b; the clamping component 3h is set on the two first placement racks 3g, used to drive the two first placement racks 3g to move toward or away from each other; the two ends of the transmission component 3i are respectively set on the first roller 3b and the second roller 3c.

[0044] Based on the above embodiments, the technical problem that this application wants to solve is how to achieve automation while ensuring the effect of the secondary coating, thereby improving the yield of Gangbao. To this end, the working principle of the flattening device 3 of this application is as follows: when the middle mesh cloth after the first coating enters the flip tube 3f, since the flip tube 3f is a semicircular tubular structure, the flip tube 3f will guide the middle mesh cloth after the first coating and send it to flip. At this time, the middle mesh cloth after the first coating is in a relaxed state. If it is not flattened and tightened, uneven coating will occur during the second coating. Since the flip tube 3f is provided with an induction trigger component 3a, after the middle mesh passes through the induction trigger component 3a, the induction trigger component 3a will feed back a signal to the clamping component 3h, and the clamping component 3h will drive the two first placement racks 3g to move toward each other, so that the two first placement racks 3g will gradually approach each other, so that the first roller 3b and the second roller 3c arranged on the first placement rack 3g will clamp the middle mesh after the first lamination, and then the first rotation driver 3d will start. The first rotation driver 3d is preferably a servo motor. The first rotation driver 3d will drive the first roller 3b arranged on its output end to rotate, and then it can drive the second roller 3c to rotate through the transmission component 3i. Because a conveying mechanism is located at the end of the flip tube 3f away from the first roller 3b, it conveys the initially coated mesh into the flip tube 3f at a constant speed. Once the mesh emerges from the end of the flip tube 3f closer to the first roller 3b, it is clamped by the first roller 3b and the second roller 3c on the two first placement racks 3g. These first and second rollers 3b and 3c ensure that the mesh remains horizontal after being clamped, facilitating subsequent processing steps. After the mesh is clamped by the first and second rollers 3b and 3c, the speed of the first rotary actuator 3d is increased to a speed faster than the conveying mechanism. This gradually tightens the mesh in the flip tube 3f. Eventually, the tightened mesh contacts the feedback assembly 3e, which then determines that the mesh is tightened. At this time, the signal will be fed back to the first rotary driver 3d, and the first rotary driver 3d will reduce the rotation speed so that the rotation speed of the first roller 3b is synchronized with the conveying speed of the conveying mechanism. This can ensure that the middle mesh cloth will not be torn by the first roller 3b after being flattened and tightened. In this way, while achieving automation, the effect of secondary lamination can be guaranteed, thereby improving the technical requirements of Gangbao's finished product rate.

[0045] Further, such as Figure 4 As shown:

[0046] The induction trigger assembly 3a includes a signal transmitter 3a1, a signal receiver 3a2 and a first fixed plate 3a3; the signal transmitter 3a1 is arranged on the inner wall of the flip tube 3f near the end of the first roller 3b; the first fixed plate 3a3 is fixedly arranged on the outer wall of the flip tube 3f below the signal transmitter 3a1; the signal receiver 3a2 is fixedly arranged on the upper part of the first fixed plate 3a3 along the signal emission direction of the signal transmitter 3a1.

[0047] Based on the above embodiment, the technical problem that the present application aims to solve is how the induction trigger assembly 3a senses when the middle mesh reaches the end of the flip tube 3f near the first roller 3b. To this end, the signal transmitter 3a1 of the present application transmits a signal in an infrared manner. When there is no obstruction, the signal transmitted by the signal transmitter 3a1 will be received by the signal receiver 3a2. When there is an obstruction, the signal transmitted by the signal transmitter 3a1 cannot be received by the signal receiver 3a2. In this way, when the middle mesh moves below the signal transmitter 3a1, the middle mesh will block the signal transmitted by the signal transmitter 3a1. At this time, the signal receiver 3a2 cannot receive the signal. The signal receiver 3a2 will generate a signal and send the signal to the clamping assembly 3h. The clamping assembly 3h will drive the two first placement racks 3g to move toward each other, so that the first rollers 3b and the second rollers 3c on the two first placement racks 3g will clamp the middle mesh, thus realizing the function of automatically clamping the flipped middle mesh.

[0048] Further, such as Figure 7 As shown:

[0049] The feedback component 3e includes a third roller 3e1 and a first pressure sensor 3e2; a plurality of third rollers 3e1 are provided, and the third rollers 3e1 are evenly arranged on the inner wall of the flip tube 3f around the axis of the flip tube 3f; the first pressure sensor 3e2 is fixedly provided on the outer wall of the third roller 3e1.

[0050] Based on the above embodiment, the technical problem addressed by this application is how the feedback component 3e senses whether the mesh is taut. To this end, the third roller 3e1 is rotatably mounted on the inner wall of the tilting tube 3f. When the first rotary actuator 3d rotates the first roller 3b, the mesh is pulled taut. The taut mesh gradually moves toward the third roller 3e1 and eventually contacts the first pressure sensor 3e2 on the third roller 3e1. As the first rotary actuator 3d continues to rotate the first roller 3b, the mesh presses against the first pressure sensor 3e2, which reads the corresponding data. When the pressure reaches a preset value, indicating that the mesh is taut, a signal is fed back to the first rotary actuator 3d, which slows down the speed of the first rotary actuator 3d, preventing further tension on the mesh. This achieves the technical requirement that the feedback component 3e can sense whether the mesh is taut.

[0051] Further, such as Figure 1-2 As shown:

[0052] It also includes a moving mechanism 2, which is arranged on the bracket 1. The moving mechanism 2 includes a first slider 2a, a screw rod 2b, a second rotary driver 2c, a guide assembly 2d and a second placement rack 2e; the second rotary driver 2c is fixedly arranged on the bracket 1 above the first placement rack 3g; the screw rod 2b is fixedly arranged on the output end of the second rotary driver 2c; the guide assembly 2d is arranged on one side of the screw rod 2b; the first slider 2a is slidably arranged on the screw rod 2b along the axial direction of the screw rod 2b; the second placement rack 2e is fixedly arranged at the bottom of the first slider 2a, the guide assembly 2d is fixedly connected to the upper part of the second placement rack 2e, and the first placement rack 3g is arranged on the second placement rack 2e.

[0053] Based on the above embodiment, the technical problem that the present application aims to solve is how to deal with the situation when the first roller 3b and the second roller 3c are already in contact with the mesh cloth when the flattening device 3 is flattening the mesh cloth, but the mesh cloth is still not tightened. To this end, the second rotary driver 2c of the present application is preferably a servo motor. When the first rotary driver 3d drives the first roller 3b and the second roller 3c to rotate, a preset value is pre-set, that is, the distance between the first roller 3b and the second roller 3c is converted into the number of rotations of the output shaft of the first rotary driver 3d. When the preset number of rotations is reached, if the mesh cloth is not tightened, the first rotary driver 3d will stop rotating. This is set because if the first rotary driver 3d continues to rotate, although the mesh cloth is tightened, there will be a situation where a section of the mesh cloth protrudes from the second roller 3c. Under the action of the mesh cloth's own weight, the mesh cloth will fall and bend, which will affect the subsequent process. After the moving mechanism 2 is installed, if the mesh reaches the second roller 3c but is not yet tightened, the first rotary actuator 3d stops, and the second rotary actuator 2c begins to operate. The second rotary actuator 2c rotates the screw 2b at its output end. With the assistance of the guide assembly 2d, the first slider 2a on the second placement rack 2e slides along the length of the screw 2b. At this time, the first roller 3b and second roller 3c on the first placement rack 3g have already clamped the mesh. This allows the second placement rack 2e to drive the first placement rack 3g to move along the axis of the screw 2b. The speed at which the screw 2b drives the first slider 2a must be higher than the conveying speed of the mesh. When the feedback assembly 3e detects that the mesh is tightened, it sends a signal to the second rotary actuator 2c, which slows down the second rotary actuator 2c so that the slider's movement speed is synchronized with the conveying speed of the mesh. This achieves the position compensation function of the moving mechanism 2 for the leveling device 3.

[0054] Further, such as Figure 13 and Figure 15 As shown:

[0055] The clamping assembly 3h includes a third rotary drive 3h1, a driving wheel 3h2, a first rack 3h3 and a second rack 3h4; the third rotary drive 3h1 is fixedly arranged on the side wall of the second placement rack 2e, and the output end of the third rotary drive 3h1 points to the first placement rack 3g; the driving wheel 3h2 is fixedly arranged on the output end of the third rotary drive 3h1; the first rack 3h3 and the driving wheel 3h2 are engaged with each other, and the first rack 3h3 is fixedly arranged on the side wall of one of the first placement racks 3g along the height direction of the bracket 1; the second rack 3h4 is engaged with the side of the driving wheel 3h2 away from the first rack 3h3, and the second rack 3h4 is fixedly arranged on the side wall of the other first placement rack 3g along the height direction of the bracket 1.

[0056] Based on the above embodiment, the technical problem that this application aims to solve is how the clamping assembly 3h achieves its clamping function. To this end, the third rotary driver 3h1 of this application is preferably a servo motor. When the third rotary driver 3h1 is started, the drive wheel 3h2 fixed to the output end of the third rotary driver 3h1 is driven to rotate. At this time, the drive wheel 3h2 drives the first rack 3h3 and the second rack 3h4 to move. Driven by the drive wheel 3h2, the first rack 3h3 and the second rack 3h4 can move toward each other or away from each other. In this way, the opening and closing of the two first placement racks 3g are achieved. Thus, the clamping function of the clamping assembly 3h is realized.

[0057] Further, such as Figure 11 As shown:

[0058] The transmission assembly 3i includes a first synchronous wheel 3i1, a second synchronous wheel 3i2 and a synchronous belt 3i3; the first synchronous wheel 3i1 is fixedly arranged on the end of the first roller 3b away from the first rotation driver 3d along the axis of the first roller 3b; the second synchronous wheel 3i2 is arranged on one end of the second roller 3c on the side of the first synchronous wheel 3i1; the two ends of the synchronous belt 3i3 are respectively engaged with the first synchronous wheel 3i1 and the second synchronous wheel 3i2.

[0059] Based on the above embodiment, the technical problem that this application aims to solve is how the transmission assembly 3i drives the second roller 3c to rotate. To this end, when the first rotary driver 3d begins to rotate, the first rotary driver 3d drives the first roller 3b to rotate, which in turn drives the first synchronous pulley 3i1 fixed to one end of the first roller 3b to rotate. Because the two ends of the synchronous belt 3i3 are respectively engaged with the first synchronous pulley 3i1 and the second synchronous pulley 3i2, after the first synchronous pulley 3i1 rotates, the second synchronous pulley 3i2 is also driven to rotate by the synchronous belt 3i3, thereby driving the second roller 3c, which is fixedly connected to the second synchronous pulley 3i2, to rotate. This realizes the transmission function of the transmission assembly 3i.

[0060] Further, such as Figure 10 As shown:

[0061] The leveling device 3 also includes a guide assembly 3j, which is respectively arranged on the second placement rack 2e and the first placement rack 3g. The guide assembly 3j includes a second slider 3j1 and a slide groove 3j2; the slide groove 3j2 is opened on the side wall of the second placement rack 2e along the height direction of the bracket 1; the second slider 3j1 is fixedly arranged on the side wall of the first placement rack 3g, and the second slider 3j1 slides in cooperation with the slide groove 3j2.

[0062] Based on the above embodiment, the technical problem that the present application aims to solve is how to ensure that the two first placement racks 3g can move more stably when driven by the clamping component 3h. To this end, the second slider 3j1 of the present application is a rectangular structure, and two second sliders 3j1 are provided, one on each of the two first placement racks 3g. When the clamping component 3h starts to run, the first placement rack 3g will be driven, and the second slider 3j1 fixed on the side wall of the first placement rack 3g will also be driven. The second slider 3j1 will slowly slide along the length direction of the chute 3j2. Since the length direction of the chute 3j2 is parallel to the height direction of the bracket 1, it can ensure that the two first placement racks 3g can move more stably when driven by the clamping component 3h.

[0063] Further, such as Figure 3 As shown:

[0064] The guide assembly 2d includes a guide rod 2d1 and a third slider 2d2; the third slider 2d2 is fixedly arranged on the upper part of the second placement rack 2e; the guide rod 2d1 is arranged on the third slider 2d2 along the length direction of the bracket 1, and the third slider 2d2 slides with the guide rod 2d1, and the guide rod 2d1 is fixedly arranged on the bracket 1.

[0065] Based on the above embodiment, the technical problem addressed by this application is how the guide assembly 2d assists the screw rod 2b in driving the second placement rack 2e. To this end, this application employs at least one third slider 2d2. When the screw rod 2b is rotated by the second rotary actuator 2c, the third slider 2d2 and guide rod 2d1 constrain the second placement rack 2e, allowing the screw rod 2b to drive the second placement rack 2e via the first slider 2a. This achieves the technical requirement that the guide assembly 2d assists the screw rod 2b in driving the second placement rack 2e.

[0066] Further, such as Figure 1 As shown:

[0067] The leveling device 3 further includes a second pressure sensor; a plurality of second pressure sensors are provided, and the second pressure sensors are respectively provided on the outer walls of the first roller 3b and the second roller 3c.

[0068] Based on the above embodiment, the technical problem that this application aims to solve is how to monitor the clamping pressure of the first rollers 3b and the second rollers 3c on the two first placement racks 3g when clamping the middle mesh. To this end, when the first rollers 3b and the second rollers 3c disposed on the two first placement racks 3g clamp the middle mesh, the second pressure sensors disposed on the outer walls of the first rollers 3b and the second rollers 3c will monitor the pressure, thereby preventing damage to the middle mesh due to excessive clamping force.

[0069] Further, such as Figure 14 As shown:

[0070] The leveling device 3 also includes a replacement mechanism 4, which includes a second fixing plate 4a and a fixing hole 4b; the second fixing plate 4a is respectively arranged on the end of the first rack 3h3 and the end of the second rack 3h4; the fixing hole 4b is opened through the second fixing plate 4a.

[0071] Based on the above embodiment, the technical problem that this application aims to solve is how to quickly replace the first rack 3h3 and the second rack 3h4, which will wear out after a period of use. To this end, when the first rack 3h3 and the second rack 3h4 need to be replaced, the application only needs to unscrew the screws set in the fixing holes 4b to achieve the replacement of the first rack 3h3 and the second rack 3h4.

[0072] The above embodiments merely represent one or several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A method for preparing a Hong Kong Bao hot melt film, characterized in that: The following steps are included: S1, unwinding mesh cloth; S2. Laminating the mesh cloth for the first time and cooling the mesh cloth after lamination; S3, turning over the mesh cloth after the first lamination through the device, and flattening the turned mesh cloth; S4, after heating the middle mesh cloth, perform secondary lamination to complete the production; The device for flipping and flattening the mesh cloth in S3 is a flattening device (3), which is arranged on the bracket (1). The flattening device (3) comprises a sensing trigger component (3a), a first roller (3b), a second roller (3c), a first rotary driver (3d), a feedback component (3e), a flipping tube (3f), a first placement rack (3g), a clamping component (3h) and a transmission component (3i); two first placement racks (3g) are provided, and the two first placement racks (3g) are arranged opposite to each other; the first rotary driver (3d) is fixedly arranged on the first placement rack (3g); the first roller (3b) is fixedly arranged on the first rotary driver (3i); The actuator (3d) is mounted on the output end of the actuator (3d); the second roller (3c) is rotatably arranged on one side of the first roller (3b); the flip tube (3f) is a semicircular tubular structure, and the flip tube (3f) is arranged on one side of the bracket (1); the feedback component (3e) is arranged on the inner wall of the flip tube (3f); the induction trigger component (3a) is arranged on the inner wall of the flip tube (3f) near one end of the first roller (3b); the clamping component (3h) is arranged on the two first placement racks (3g) and is used to drive the two first placement racks (3g) to move toward or away from each other; and the two ends of the transmission component (3i) are respectively arranged on the first roller (3b) and the second roller (3c); A conveying mechanism is provided at one end of the flip tube (3f) away from the first roller (3b). The conveying mechanism conveys the middle mesh cloth after the first lamination into the flip tube (3f) at a certain speed, so the flip tube (3f) guides the middle mesh cloth after the first lamination and sends it to flip. After the middle mesh cloth passes through the induction trigger component (3a), the induction trigger component (3a) will feed back a signal to the clamping component (3h). The clamping component (3h) drives the two first placement racks (3g) to move towards each other. After the first roller (3b) and the second roller (3c) clamp the middle mesh cloth, the rotation speed of the first rotary driver (3d) is faster than the conveying speed of the conveying mechanism, so that the middle mesh cloth in the flip tube (3f) is driven to be gradually tightened. The gradually tightened middle mesh cloth will contact the feedback component (3e), and the feedback component (3e) determines that the middle mesh cloth is in a tightened state.

2. The method for preparing a Gangbao hot melt film according to claim 1, characterized in that: The induction trigger component (3a) comprises a signal transmitter (3a1), a signal receiver (3a2) and a first fixing plate (3a3); The signal transmitter (3a1) is arranged on the inner wall of the flip tube (3f) near one end of the first roller (3b); The first fixing plate (3a3) is fixedly arranged on the outer wall of the flip tube (3f) below the signal transmitter (3a1); The signal receiver (3a2) is fixedly arranged on the upper part of the first fixing plate (3a3) along the signal emission direction of the signal transmitter (3a1).

3. The method for preparing a Gangbao hot melt film according to claim 1, characterized in that: The feedback component (3e) includes a third roller (3e1) and a first pressure sensor (3e2); A plurality of third rollers (3e1) are provided, and the third rollers (3e1) are evenly arranged on the inner wall of the flip tube (3f) around the axis of the flip tube (3f); The first pressure sensor (3e2) is fixedly arranged on the outer wall of the third roller (3e1).

4. The method for preparing a Gangbao hot melt film according to claim 1, characterized in that: The mobile mechanism (2) is provided on the bracket (1), and the mobile mechanism (2) includes a first slider (2a), a screw rod (2b), a second rotary driver (2c), a guide assembly (2d), and a second placement rack (2e); The second rotary driver (2c) is fixedly arranged on the bracket (1) above the first placement rack (3g); The screw rod (2b) is fixedly arranged on the output end of the second rotary drive (2c); The guide assembly (2d) is arranged on one side of the screw rod (2b); The first slider (2a) is slidably arranged on the screw rod (2b) along the axial direction of the screw rod (2b); The second placement rack (2e) is fixedly arranged at the bottom of the first sliding block (2a), the guide assembly (2d) is fixedly connected to the upper part of the second placement rack (2e), and the first placement rack (3g) is arranged on the second placement rack (2e).

5. The method for preparing a Gangbao hot melt film according to claim 4, characterized in that: The gripping assembly (3h) comprises a third rotary drive (3h1), a drive wheel (3h2), a first rack (3h3) and a second rack (3h4); The third rotary drive (3h1) is fixedly arranged on the side wall of the second placement rack (2e), and the output end of the third rotary drive (3h1) points to the first placement rack (3g); The driving wheel (3h2) is fixedly arranged on the output end of the third rotary drive (3h1); The first rack (3h3) is meshed with the driving wheel (3h2), and the first rack (3h3) is fixedly arranged on the side wall of one of the first placement racks (3g) along the height direction of the bracket (1); The second rack (3h4) is engaged with a side of the driving wheel (3h2) away from the first rack (3h3), and the second rack (3h4) is fixedly arranged on a side wall of another first placement rack (3g) along the height direction of the bracket (1).

6. The method for preparing a Gangbao hot melt film according to claim 1, characterized in that: The transmission assembly (3i) includes a first synchronous wheel (3i1), a second synchronous wheel (3i2) and a synchronous belt (3i3); The first synchronous wheel (3i1) is fixedly arranged along the axis of the first roller (3b) on an end of the first roller (3b) away from the first rotary driver (3d); The second synchronous wheel (3i2) is arranged on one end of the second roller (3c) on one side of the first synchronous wheel (3i1); Both ends of the synchronous belt (3i3) are respectively engaged with the first synchronous wheel (3i1) and the second synchronous wheel (3i2).

7. The method for preparing a Gangbao hot melt adhesive sheet according to claim 4, characterized in that: The leveling device (3) further includes a guide assembly (3j), which is respectively arranged on the second placement rack (2e) and the first placement rack (3g), and the guide assembly (3j) includes a second sliding block (3j1) and a sliding groove (3j2); The slide groove (3j2) is opened on the side wall of the second placement rack (2e) along the height direction of the bracket (1); The second sliding block (3j1) is fixedly arranged on the side wall of the first placement rack (3g), and the second sliding block (3j1) is slidably engaged with the sliding groove (3j2).

8. The method for preparing a Gangbao hot melt film according to claim 4, characterized in that: The guide assembly (2d) comprises a guide rod (2d1) and a third slider (2d2); The third sliding block (2d2) is fixedly arranged on the upper part of the second placement rack (2e); The guide rod (2d1) is arranged on the third slider (2d2) and passes through the bracket (1) in a longitudinal direction. The third slider (2d2) and the guide rod (2d1) are slidably matched. The guide rod (2d1) is fixedly arranged on the bracket (1).

9. The method for preparing a Gangbao hot melt adhesive sheet according to claim 4, characterized in that: The leveling device (3) further includes a second pressure sensor; A plurality of second pressure sensors are provided, and the second pressure sensors are respectively provided on the outer walls of the first roller (3b) and the second roller (3c).

10. The method for preparing a Gangbao hot melt film according to claim 5, characterized in that: The leveling device (3) further includes a replacement mechanism (4), and the replacement mechanism (4) includes a second fixing plate (4a) and a fixing hole (4b); The second fixing plate (4a) is respectively arranged on the end of the first rack (3h3) and the end of the second rack (3h4); The fixing hole (4b) is formed through the second fixing plate (4a).

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