PVC film flat laminating equipment and method based on automatic adjustment of sheet thickness

Abstract

The present invention relates to the technical field of film laminating equipment, and in particular to PVC film laminating equipment and a laminating method based on automatic adjustment of plate thickness; wherein the PVC film laminating equipment based on automatic adjustment of plate thickness comprises: a base frame; a transmission module, the transmission module is horizontally arranged on the base frame, and the transmission module is provided with a fixed transmission unit and a movable transmission unit capable of transmitting the plate; a laminating module, the laminating module is horizontally arranged across the base frame and is arranged at the movable transmission unit of the transmission module; the laminating module is provided with a laminating roller horizontally close to the surface of the transmission module and two groups of retaining rollers horizontally arranged on both sides of the laminating roller; a driving module, the driving module is provided with two groups, namely a first driving module and a second driving module; the present invention can not only automatically identify the thickness of the plate but also automatically adjust the film laminating pressure according to different plate thicknesses, and has high film laminating efficiency and good effect.

Description

Technical Field

[0001] The invention relates to the technical field of film pasting equipment, and in particular to PVC film pasting equipment and a pasting method based on automatic adjustment of plate thickness. Background Art

[0002] As a common surface decoration process, PVC film laminating technology is widely used in the surface treatment of furniture, building materials and decorative panels. PVC film can not only provide the panels with beautiful appearance, but also improve their wear resistance, moisture resistance and corrosion resistance. However, when processing panels of different thicknesses, traditional PVC film laminating equipment usually relies on manual adjustment of the equipment's pressure and laminating speed to adapt to different process requirements. This adjustment method is inefficient, and due to errors in human operation, it is easy to cause quality problems such as uneven film laminating, bubbles, wrinkles, etc., affecting the appearance and performance of the finished product.

[0003] However, most of the existing PVC film flat laminating equipment adopts a fixed laminating system, which cannot automatically identify the thickness change of the board and cannot automatically adjust the laminating pressure according to the different thickness of the board. In the actual production process, especially when used on the production line of boards with different thicknesses and materials, it will lead to low production efficiency and complicated operation. Especially when it is necessary to laminat boards of different thicknesses at the same time, the defects are particularly obvious and it is easy to cause quality problems such as uneven film laminating on the board surface. Summary of the invention

[0004] In view of the above problems, a PVC film flat laminating equipment based on automatic adjustment of sheet thickness is provided. By proposing a device that can not only automatically identify the thickness of the sheet but also automatically adjust the film laminating pressure according to the thickness of the sheet, the problem of existing film laminating equipment being unable to self-adjust the film laminating pressure according to the thickness of the sheet when laminating the sheet is solved, which easily leads to quality problems such as uneven film laminating, bubbles, wrinkles, etc.

[0005] In order to solve the problems of the prior art, the present invention provides a PVC film flat laminating device based on automatic adjustment of sheet thickness, comprising: a base frame; a transmission module, the transmission module is horizontally arranged on the base frame, the transmission module is provided with a fixed transmission unit and a movable transmission unit capable of transmitting the sheet; the feed port of the movable transmission unit is arranged opposite to the discharge port of the fixed transmission unit; the movable transmission unit is used to receive the sheet transmitted via the fixed transmission unit and transmit it toward the discharge port of the movable transmission unit, when the sheet moves to the movable transmission unit, pressure is applied to the sheet to make the sheet move longitudinally; a flat laminating module, the flat laminating module is horizontally arranged across the base frame and arranged at the movable transmission unit; the flat laminating module is provided with a flat laminating roller which is horizontally arranged and close to the surface of the transmission module and two groups of retaining rollers which are horizontally arranged on both sides of the flat laminating roller; a driving module, the driving module is provided with two groups and are respectively a first driving module and a second driving module; the first driving module and the second driving module are symmetrically arranged in a vertical state in the middle of the transmission module; the first driving module and the second driving module are used to alternately transmit the sheet located at the fixed transmission unit to the movable transmission unit.

[0006] Preferably, the transmission module also includes a longitudinal adjustment unit capable of actively pressing down the plate at the feed port of the active transmission unit, and the longitudinal adjustment units are provided in multiple groups, and the multiple groups of longitudinal adjustment units are symmetrically arranged on both sides of the feed port of the active transmission unit, and the output ends of the multiple groups of longitudinal adjustment units are arranged in a vertical state facing the active transmission unit.

[0007] Preferably, the longitudinal adjustment unit further includes a first pressure sensor capable of detecting an output pressure of an output end of the longitudinal adjustment unit, and the first pressure sensor is fixedly disposed at the output end of the longitudinal adjustment unit.

[0008] Preferably, the movable transmission unit includes a transmission roller group and an elastic support element; the elastic support element is fixedly arranged on the base frame in a vertical state and is arranged close to the edge of the base frame; the transmission roller group is fixedly arranged at the supporting end of the elastic support element in a horizontal state; the elastic support element is provided with an elastic support plate; the transmission roller group is fixedly arranged horizontally on the elastic support plate; when the elastic support plate is subjected to external pressure, the elastic support plate shrinks longitudinally toward the base frame.

[0009] Preferably, the elastic support element also includes an elastic force adjustment element capable of adjusting the supporting force of the elastic support plate; the elastic force adjustment element is composed of a support seat, a second electric push rod vertically fixed on the support seat, and an adjustment frame horizontally fixed on the driving end of the second electric push rod; a guide rod and a spring coaxially sleeved outside the guide rod are also vertically arranged at the bottom of the elastic support plate; the upper end of the spring abuts against the lower surface of the elastic support plate, and the lower end of the spring abuts against the upper surface of the adjustment frame.

[0010] Preferably, the first driving module includes a linear reciprocating drive, a second mounting frame, an adsorption module and a third mounting frame; the linear reciprocating drive is horizontally fixed on the base frame by the second mounting frame; the adsorption modules are provided with multiple groups, and the multiple groups of adsorption modules are vertically arranged at the output end of the linear reciprocating drive through the third mounting frame, and the adsorption ends of the multiple groups of adsorption modules are all arranged in the direction of the transmission module.

[0011] Preferably, the adsorption module is composed of a third electric push rod and a suction cup fixedly arranged at the output end of the third electric push rod.

[0012] Preferably, the flat laminating module also includes a support frame, a bearing seat, a guide roller, a second connecting frame and a third connecting frame; the support frame is provided with two groups, and the two groups of support frames are symmetrically arranged on both sides of the transmission module in a vertical state, and the flat laminating roller is horizontally rotatable and arranged across the two groups of support frames through the bearing seats arranged at both ends; the two groups of retaining rollers are respectively arranged on both sides of the support frame through two groups of second connecting frames, and the two groups of retaining rollers are respectively arranged near the feed port and the discharge port of the movable transmission unit; the guide roller is horizontally fixedly arranged on one side of the flat laminating roller near the feed port of the movable transmission unit through the third connecting frame, and the guide roller is used to guide the release paper to be discharged.

[0013] Preferably, the elastic force adjustment element further includes a second pressure sensor, and the second pressure sensor is fixedly arranged at the output end of the second electric push rod.

[0014] The method for flattening a PVC film flattening device based on automatic adjustment of the thickness of a plate is applied to the PVC film flattening device based on automatic adjustment of the thickness of a plate, and comprises the following steps:

[0015] S1: First, the plates to be laminated with PVC film are placed on the fixed transmission unit in sequence, and then the plates are gradually pushed to the movable transmission unit by driving the first driving module. At this time, the plates are supported by the transmission roller group to smoothly pass through the transmission area;

[0016] S2: When the sheet gradually enters the flat laminating area, that is, after the sheet is completely transferred to the movable transfer unit, the longitudinal adjustment unit is activated, and the sheet is pressed by the first electric push rod, so as to dynamically adjust the support height of the elastic support plate. While the sheet is pressed by the first electric push rod, the first pressure sensor continuously records and feeds back the pressure output by the first electric push rod, so that the upper surface of the sheet is kept at the preset laminating height and lower than the holding roller setting;

[0017] S3: At this time, the sheet continues to be transported toward the flat laminating roller at a preset height and is placed under the retaining roller. The sheet is then guided and transported by the retaining roller so that the sheet passes through the flat laminating roller at a uniform height and the PVC film is pasted on its surface by the flat laminating roller until the sheet is completely filmed.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention realizes the effect of automatically adjusting the pressing height according to the thickness of the plate through the cooperation of the longitudinal adjustment unit and the elastic support plate, without manual adjustment, avoiding the problem of frequent shutdown to adjust the height of the film laminating roller in traditional equipment, and greatly improving the production efficiency;

[0020] 2. The present invention achieves the effect of maintaining a fixed distance and stable transmission of the plate through the flat laminating module through the cooperation of the flat laminating module and the holding roller, and achieves the effect of stable and evenly pressurized laminating when the plate passes through the flat laminating roller, and does not cause technical problems such as poor laminating effect, loose adhesion, and bubbles due to different plate thicknesses;

[0021] 3. The present invention realizes the effect of dynamically adjusting the plate transmission height through an elastic support plate, and the second electric push rod can dynamically adjust the support strength of the plate according to the pressure data detected by the first pressure sensor, so that the plate has a balanced rebound pressure and is efficiently transmitted at the preset height. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional PVC film flat laminating equipment based on automatic adjustment of sheet thickness. Figure 1 ;

[0023] Figure 2 It is a three-dimensional PVC film flat laminating equipment based on automatic adjustment of sheet thickness. Figure 2 ;

[0024] Figure 3 yes Figure 2 A local enlarged view of point A;

[0025] Figure 4 It is a side view of the PVC film flat lamination equipment based on automatic adjustment of the sheet thickness;

[0026] Figure 5 yes Figure 4 A cross-sectional view of the section at BB;

[0027] Figure 6 yes Figure 5 A partial enlarged view of point C;

[0028] Figure 7This is a three-dimensional diagram of the partial structural decomposition of the transmission module and the drive module in the PVC film flat lamination equipment based on automatic adjustment of the plate thickness;

[0029] Figure 8 yes Figure 7 A partial enlarged view of point D;

[0030] Fig. 9 This is a three-dimensional diagram of the structure of the transmission module in the PVC film flat lamination equipment based on automatic adjustment of the sheet thickness;

[0031] Fig.10 This is a three-dimensional diagram of the partial structure of the flat laminating module in the PVC film flat laminating equipment based on automatic adjustment of the sheet thickness.

[0032] The numbers in the figure are: 1-base frame; 2-transmission module; 21-fixed transmission unit; 22-movable transmission unit; 221-transmission roller group; 222-elastic support element; 2221-elastic support plate; 2222-guide rod; 2223-spring; 2224-elastic force adjustment element; 2225-support seat; 2226-second electric push rod; 2227-adjustment frame; 2228-second pressure sensor; 23-longitudinal adjustment unit; 231-first electric push rod; 232-first connecting rod Frame; 233-lower pressure roller; 234-first pressure sensor; 3-flattening module; 31-flattening roller; 32-holding roller; 33-support frame; 34-bearing seat; 35-guide roller; 36-second connecting frame; 37-third connecting frame; 4-driving module; 41-first driving module; 411-linear reciprocating drive; 412-second mounting frame; 413-adsorption module; 4131-third electric push rod; 4132-suction cup; 414-third mounting frame; 42-second driving module. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] See also Figures 1 to 10As shown: PVC film flat laminating equipment based on automatic adjustment of sheet thickness, comprising: a base frame 1; a transmission module 2, the transmission module 2 is horizontally arranged on the base frame 1, and the transmission module 2 is provided with a fixed transmission unit 21 and a movable transmission unit 22 capable of transmitting the sheet; the feed port of the movable transmission unit 22 is arranged opposite to the discharge port of the fixed transmission unit 21; the movable transmission unit 22 is used to receive the sheet transmitted via the fixed transmission unit 21 and transmit it toward the discharge port of the movable transmission unit 22, when the sheet moves to the movable transmission unit 22, and pressure is applied to the sheet to make the sheet move longitudinally; a flat laminating module 3, the flat laminating module 3 is horizontally arranged across the base frame 1 and is arranged at the movable transmission unit 22; the flattening module 3 is provided with a flattening roller 31 which is horizontally arranged and close to the surface of the transmission module 2 and two groups of holding rollers 32 which are horizontally arranged on both sides of the flattening roller 31; the driving module 4 is provided with two groups, namely a first driving module 41 and a second driving module 42; the first driving module 41 and the second driving module 42 are symmetrically arranged in a vertical state in the middle of the transmission module 2; the first driving module 41 and the second driving module 42 are used to alternately transfer the plate located at the fixed transmission unit 21 to the movable transmission unit 22.

[0035] The lower roller surface of the retaining roller 32 is set slightly lower than the lower roller surface of the flattening roller 31; the height difference is less than the thickness of the PVC film to be pasted, so that when the plate is transmitted through the transmission module 2, the plate can be continuously guided and transmitted by the retaining roller 32 without affecting the normal pasting of the PVC film on the surface of the plate by the flattening roller 31, and because the height difference between the retaining roller 32 and the flattening roller 31 is slightly less than the thickness of the PVC film to be pasted, the PVC film can be further pressed when it is pasted by the flattening roller 31, so as to ensure the firmness of the pasting; when it is necessary to automatically flatten the PVC film on the surface of the plate, the plate to be pasted is first transported to the transmission module 2 by an external handling device, and ensure that the plate is stably placed on the fixed transmission unit 21. Then, an external power source is connected to synchronously drive the first driving module 41 and the second driving module 42 to operate. The first driving module 41 will first push the plate from the fixed transmission unit 21 to the movable transmission unit 22. When the first driving module 41 operates, the second driving module 42 is still at the starting point. When the next plate is placed at the fixed transmission unit 21, the second driving module 42 will operate to transfer the plate toward the movable transmission unit 22, and so on, thereby achieving the purpose of transferring the plate in an alternating manner. During the pushing process, the flattening module 3 starts to work, and the flattening roller 31 efficiently attaches the PVC film to the surface of the plate.

[0036] Due to the dual-group drive module 4 design, the first drive module 41 and the second drive module 42 push the sheet in an alternating manner to make it continuously transported, ensuring the smooth progress of the film laminating process. When the sheet enters the movable transmission unit 22, it is first squeezed and adjusted by the retaining roller 32 to press its posture downward, so that it accurately enters the flat laminating roller 31 for film laminating. Through the design of the retaining roller 32, the sheet is pressed down in the longitudinal direction to ensure that it is highly accurately fitted with the flat laminating roller 31, avoiding uneven film laminating caused by height differences. By conducting the sheet in this way, even when facing sheets of different thicknesses, the effect of effective laminating can be achieved on their surfaces; when pasting PVC film on the surfaces of different sheets, there is no need to manually adjust the pressure position and pressure of the flat laminating roller 31 frequently.

[0037] Through the combination of the holding roller 32 and the two sets of driving modules 4, it can automatically adapt to the plates of different thicknesses, and realize automatic height adjustment during the plate transmission process to ensure the uniform and flat lamination effect of the PVC film. Compared with the traditional manually adjusted equipment, it greatly improves the production efficiency and film lamination quality, reduces the error of human operation, and realizes efficient and continuous film lamination operation for plates of different thicknesses.

[0038] See also Figure 2 and Fig. 9 As shown: the transmission module 2 also includes a longitudinal adjustment unit 23 that can actively press down the plate at the feed port of the active transmission unit 22, and the longitudinal adjustment unit 23 is provided in multiple groups, and the multiple groups of longitudinal adjustment units 23 are symmetrically arranged on both sides of the feed port of the active transmission unit 22, and the output ends of the multiple groups of longitudinal adjustment units 23 are all arranged in a vertical state facing the active transmission unit 22.

[0039] The longitudinal adjustment unit 23 is composed of a first electric push rod 231 and a lower pressing roller 233 fixedly arranged at the driving end of the first electric push rod 231 through a first connecting frame 232; the first electric push rod 231 is vertically fixedly arranged at one side of the base frame 1 through a first mounting frame. When the plate is transferred from the fixed transmission unit 21 to the movable transmission unit 22, due to the different thicknesses of the plates, in order to ensure that the plates of different thicknesses can maintain a uniform height when entering the flattening module 3, after the plate is completely transferred from the fixed transmission unit 21 to the movable transmission unit 22, an external power supply is first connected to drive the first electric push rod 231 to work. The first electric push rod 231 pushes the pressing roller 233 to gradually approach the plate through the extension of its output shaft. The output stroke of the output shaft of the first electric push rod 231 is the distance from the lower roller surface of the pressing roller 233 to the lower roller surface of the holding roller 32, until the plate is longitudinally pressed down to a height lower than the holding roller 32, so that the upper surface of the plate is at the same height as the lower roller surface of the holding roller 32; and the holding roller 32 continuously guides and corrects the plate to pass through the flat laminating roller 31 at the current height. After this automatic pressing and correction operation, the plate will enter the flat laminating module 3 at the correct height, thereby achieving accurate and uniform PVC film lamination on the surfaces of plates with different thicknesses.

[0040] By setting up the longitudinal adjustment unit 23, the height of the plate with different thicknesses when entering the flat laminating module 3 can be automatically adjusted to ensure that the laminating process between the plate surface and the flat laminating module 3 is consistent and smooth, avoiding the problem of uneven laminating caused by differences in plate thickness.

[0041] See also Figure 3 As shown: the longitudinal adjustment unit 23 also includes a first pressure sensor 234 capable of detecting the output pressure of the output end of the longitudinal adjustment unit 23, and the first pressure sensor 234 is fixedly arranged at the output end of the longitudinal adjustment unit 23. The first pressure sensor 234 is fixedly arranged at the connection between the first electric push rod 231 and the first connecting frame 232, and is used to detect the pressure applied to the plate by the first electric push rod 231 when the plate is pressed. By real-time monitoring and feedback of the pressure output by the first electric push rod 231, the effect of linkage with the elastic support force of the elastic support element 222 can be achieved. The support force of the elastic support element 222 is adjusted by different pressure feedbacks of the first pressure sensor 234, so as to achieve the effect of applying different elastic support forces to plates of different thicknesses.

[0042] See also Figure 7As shown: the movable transmission unit 22 includes a transmission roller group 221 and an elastic support element 222; the elastic support element 222 is vertically fixedly arranged on the base frame 1 and is arranged close to the edge of the base frame 1; the transmission roller group 221 is horizontally fixedly arranged at the supporting end of the elastic support element 222; the elastic support element 222 is provided with an elastic support plate 2221; the transmission roller group 221 is horizontally fixedly arranged on the elastic support plate 2221; when the elastic support plate 2221 is subjected to external pressure, the elastic support plate 2221 shrinks longitudinally toward the base frame 1.

[0043] The movable transmission units 22 are provided in two groups, and the two groups of movable transmission units 22 are horizontally arranged on the base frame 1 and arranged close to the two sides of the long side direction of the base frame 1; the driving module 4 is vertically arranged in parallel between the two groups of movable transmission units 22.

[0044] The transmission roller set 221 is composed of a plurality of fixed frames arranged at equal intervals and rollers arranged horizontally and rotatably on top of the plurality of fixed frames.

[0045] When the plate is transferred to the movable transfer unit 22 via the fixed transfer unit 21, the plate is carried and transferred via the multiple transfer rollers 221; at this time, when the longitudinal adjustment unit 23 applies pressure to the plate supported by the transfer rollers 221, the transfer rollers 221 will be longitudinally pressed down and contracted in coordination with the elastic support plate 2221. This characteristic is used to press plates of different thicknesses, so that the upper surface of the pressed plate is at the same height as the lower roller surface of the retaining roller 32. When the plate is longitudinally pressed down to a preset height via the transfer rollers 221, the elastic support plate 2221 that is pressed down will compress the spring 2223 synchronously. The longer the compression stroke of the elastic support plate 2221, the greater the rebound force of the spring 2223. Therefore, when the elastic support plate 2221 stops being compressed and the current compression height is maintained, the elastic support plate 2221 at this time will be pushed by the elastic force of the spring 2223 to always move toward the flat laminating module 3, and the plate transmitted to the bottom of the retaining roller 32 via the transmission module 2 will always have a thrust toward the retaining roller 32, thereby achieving that the plate can be pressed down to a preset height while still being tightly fitted with the retaining roller 32; the technical problem of the plate shaking autonomously when the plate contacts the flat laminating roller 31 for film laminating will not occur. Through the cooperation of the movable transmission unit 22, the transmission roller group 221 and the elastic support plate 2221, the problems of inconsistent plate height, loose lamination and plate shaking during film laminating when laminating PVC film to plates of different thicknesses are solved. The elastic support plate 2221 provides dynamic support and resilience, so that the plate can maintain a stable height and pressure when passing through the flattening roller 31, thereby improving the flatness and consistency of the film, and improving the overall production efficiency and product quality.

[0046] See also Figure 7 and Fig. 9 As shown: the elastic support element 222 also includes an elastic force adjusting element 2224 capable of adjusting the supporting force of the elastic support plate 2221; the elastic force adjusting element 2224 is composed of a support seat 2225, a second electric push rod 2226 vertically fixed on the support seat 2225, and an adjusting frame 2227 horizontally fixed on the driving end of the second electric push rod 2226; a guide rod 2222 and a spring 2223 coaxially sleeved outside the guide rod 2222 are also vertically arranged at the bottom of the elastic support plate 2221; the upper end of the spring 2223 abuts against the lower surface of the elastic support plate 2221, and the lower end of the spring 2223 abuts against the upper surface of the adjusting frame 2227.

[0047] The elastic support plate 2221 passes through the support seat 2225 through the guide rod 2222 vertically arranged at the bottom and slides with it; the guide rod 2222 is coaxially sleeved with a spring 2223 on the outside to play an elastic supporting role. When the longitudinal adjustment unit 23 applies pressure to the plate, the pressure first acts on the transmission roller group 221 and is transmitted to the elastic support plate 2221, forcing the elastic support plate 2221 to move downward along the guide rod 2222, causing the spring 2223 to compress. When the plate is pressed to the preset stroke, the pressure stops, and the spring 2223 generates a reverse thrust, pushing the plate toward the retaining roller 32, so that the lower roller surface of the retaining roller 32 is in close contact with the plate, and the plate is fixed at the current height. Through this design, it is ensured that plates of different thicknesses can be stabilized at the preset height after passing through the transmission roller group 221 and the longitudinal adjustment unit 23, avoiding the film quality being affected by the inconsistent thickness of the plate.

[0048] Furthermore, by linkage with the second electric push rod 2226, the longitudinal adjustment unit 23 can dynamically adjust the compression stroke of the spring 2223 according to the real-time feedback of the first pressure sensor 234. When processing thinner plates, the second electric push rod 2226 extends or contracts accordingly according to the detected pressure signal, thereby synchronously driving the adjustment frame 2227 to move up or down, and then adjusting the compression stroke of the spring 2223 to increase the support force of the elastic support plate 2221 on the plate. This linkage mechanism not only ensures that plates of different thicknesses are subjected to uniform force during the film lamination process, but also improves the adaptability of the system.

[0049] By setting the guide rod 2222, the spring 2223 and its longitudinal adjustment mechanism, highly stable and precise control of the sheets of different thicknesses during the transmission and laminating process is achieved. The dynamically adjusted compression stroke of the spring 2223 ensures that the sheets can obtain appropriate supporting force regardless of thickness, avoiding the problem of uneven laminating or loose laminating, and significantly improving the automation and efficiency of the production process. At the same time, through the linkage design of the second electric push rod 2226 and the first pressure sensor 234, the equipment can automatically adjust the supporting force according to the real-time pressure feedback, realizing a highly intelligent processing process.

[0050] See also Figure 4 and Figure 7 As shown: the first driving module 41 includes a linear reciprocating driver 411, a second mounting frame 412, an adsorption module 413 and a third mounting frame 414; the linear reciprocating driver 411 is horizontally fixed on the base frame 1 through the second mounting frame 412; the adsorption module 413 is provided with multiple groups, and the multiple groups of adsorption modules 413 are vertically arranged at the output end of the linear reciprocating driver 411 through the third mounting frame 414, and the adsorption ends of the multiple groups of adsorption modules 413 are all arranged toward the transmission module 2.

[0051] The linear reciprocating drive 411 is specifically a screw slide; when it is necessary to drive the plate placed on the fixed transmission unit 21 to move to the movable transmission unit 22 and pass through the flat laminating module 3 at a uniform speed to complete the film laminating work, firstly, an external power supply is connected to drive the linear reciprocating drive 411 to drive the adsorption module 413 to move horizontally to the bottom of the plate located at the fixed transmission unit 21, and then the adsorption module 413 is driven to move so that its adsorption end extends longitudinally toward the bottom of the plate and is adsorbed and fixed thereto, and then the linear reciprocating drive 411 is driven again to drive the adsorption module 413 to move toward the movable transmission unit 22, thereby achieving the effect of horizontally transporting the plate.

[0052] Furthermore, the method is not limited to the adsorption module 413 , and other transporting methods may also be used to achieve the purpose of driving the plate to move from the fixed transport unit 21 to the movable transport unit 22 .

[0053] See also Figure 8 As shown, the adsorption module 413 is composed of a third electric push rod 4131 and a suction cup 4132 fixedly arranged at the output end of the third electric push rod 4131 .

[0054] When the adsorption module 413 is driven by the linear reciprocating drive starter to move to the fixed transmission unit 21 and is located directly below the plate, when the plate needs to be adsorbed, it is only necessary to connect an external power supply to drive the third electric push rod 4131 to move, so that its output shaft extends and simultaneously drives the suction cup 4132 to be set longitudinally close to the bottom of the plate until it stops after being adsorbed with it. By using the suction cup 4132 for adsorption and transportation, it is possible to effectively guide and limit the plate in the process of driving the plate for transportation, and the plate will not be offset during the transportation process.

[0055] See also Fig.10 As shown: the flattening module 3 also includes a support frame 33, a bearing seat 34, a guide roller 35, a second connecting frame 36 and a third connecting frame 37; the support frame 33 is provided with two groups, and the two groups of support frames 33 are symmetrically arranged on both sides of the transmission module 2 in a vertical state, and the flattening roller 31 is horizontally rotated and spanned between the two groups of support frames 33 through the bearing seats 34 arranged at both ends; the two groups of retaining rollers 32 are respectively arranged on both sides of the support frame 33 through two groups of second connecting frames 36, and the two groups of retaining rollers 32 are respectively arranged near the feed port and the discharge port of the movable transmission unit 22; the guide roller 35 is horizontally fixedly arranged on one side of the flattening roller 31 near the feed port of the movable transmission unit 22 through the third connecting frame 37, and the guide roller 35 is used to guide the release paper to be discharged.

[0056] The flat laminating module 3 is a prior art and is only shown in the figure for illustration. The flat laminating roller 31 is used to guide the film paper to be attached to the surface of the plate, and the guide roller 35 is used to guide the release paper attached to the adhesive surface of the film paper to be peeled off and curled into a roll; in the film laminating state, the PVC film is driven by an external transmission device and the cooperation of the flat laminating roller 31 and the guide roller 35 to continuously release the adhesive surface of the PVC film to fit the plate; thereby, automatic film laminating of the plate is achieved, and the two groups of retaining rollers 32 fixedly arranged on both sides of the support frame 33 by two groups of second connecting frames 36 are used to continuously limit and guide the transmission of the plate transmitted through the transmission module 2, so that the plate always maintains an appropriate distance between the flat laminating roller 31, thereby achieving a uniform and evenly pressed film laminating effect on the surface of the plate.

[0057] See also Figure 6 and Fig. 9 As shown: the elastic force adjustment element 2224 also includes a second pressure sensor 2228, and the second pressure sensor 2228 is fixedly arranged at the output end of the second electric push rod 2226.

[0058] The second pressure sensor 2228 is used to detect in real time the pressure released by the spring 2223 when supporting the plate. Due to the different thickness of the plate, the spring 2223 will present different compression strokes. In order to ensure that the plate can always maintain a balanced rebound force and the plate will not be unable to be transmitted normally due to a large rebound force, the second pressure sensor 2228 and the first pressure sensor 234 are arranged in a linkage manner. The output stroke of the second electric push rod 2226 will dynamically adjust the supporting stroke according to the detection data of the first pressure sensor 234, and the second pressure sensor 2228 will also autonomously detect the supporting pressure, thereby achieving the effect of evenly pressurizing the plate.

[0059] The method for flattening a PVC film flattening device based on automatic adjustment of the thickness of a plate is applied to the PVC film flattening device based on automatic adjustment of the thickness of a plate, and comprises the following steps:

[0060] S1: First, the plates to be laminated with PVC film are placed on the fixed transmission unit 21 in sequence, and then the plates are gradually pushed to the movable transmission unit 22 by driving the first driving module 41. At this time, the plates are supported by the transmission roller group 221 to smoothly pass through the transmission area;

[0061] S2: When the sheet gradually enters the flat laminating area, that is, after the sheet is completely transferred to the movable transfer unit 22, the longitudinal adjustment unit 23 is started, and the sheet is pressed by the first electric push rod 231, so as to dynamically adjust the support height of the elastic support plate 2221. While the sheet is pressed by the first electric push rod 231, the first pressure sensor 234 will continuously record and feedback the pressure output by the first electric push rod 231, so that the upper surface of the sheet is kept at the preset film laminating height and lower than the setting of the holding roller 32;

[0062] S3: At this time, the plate continues to be transported toward the flat laminating roller 31 at a preset height and is placed under the retaining roller 32. The plate is then guided and transported by the retaining roller 32, so that the plate passes through the flat laminating roller 31 at a uniform height and the PVC film is pasted on its surface by the flat laminating roller 31; until the plate is completely film-laminated.

[0063] The present invention can not only automatically identify the thickness of the plate but also automatically adjust the film pasting pressure according to the thickness of different plates, and has high film pasting efficiency and good effect.

[0064] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. PVC film flat laminating equipment based on automatic adjustment of sheet thickness, characterized in that: include: A base frame (1); a transmission module (2), the transmission module (2) being horizontally arranged on the base frame (1), the transmission module (2) being provided with a fixed transmission unit (21) and a movable transmission unit (22) capable of transmitting a plate; the feed port of the movable transmission unit (22) being arranged opposite to the discharge port of the fixed transmission unit (21); the movable transmission unit (22) being used to receive a plate transmitted via the fixed transmission unit (21) and to transmit the plate toward the discharge port of the movable transmission unit (22); when the plate moves to the movable transmission unit (22), pressure is applied to the plate so that the plate moves longitudinally; a flattening module (3), the flattening module (3) being horizontally arranged across the base frame (1) and arranged at the movable transmission unit (22); The flattening module (3) is provided with a flattening roller (31) which is horizontally arranged and close to the surface of the transmission module (2), and two groups of retaining rollers (32) which are horizontally arranged on both sides of the flattening roller (31); a driving module (4), wherein the driving module (4) is provided with two groups, namely a first driving module (41) and a second driving module (42); the first driving module (41) and the second driving module (42) are symmetrically arranged in a vertical state in the middle of the transmission module (2); the first driving module (41) and the second driving module (42) are used to alternately transfer the plate material located at the fixed transmission unit (21) to the movable transmission unit (22); the transmission module (2) also includes a device capable of transferring the plate material at the feed inlet of the movable transmission unit (22) to the fixed transmission unit (21); A longitudinal adjustment unit (23) for actively pressing down, the longitudinal adjustment unit (23) further comprising a first pressure sensor (234) capable of detecting an output pressure of an output end of the longitudinal adjustment unit (23); the active transmission unit (22) comprising a transmission roller group (221) and an elastic support element (222); the elastic support element (222) is fixedly arranged on a base frame (1) in a vertical state and is arranged close to an edge of the base frame (1); the transmission roller group (221) is fixedly arranged on a support end of the elastic support element (222) in a horizontal state; the elastic support element (222) is provided with an elastic support plate (2221); the transmission roller group (221) is fixedly arranged horizontally on the elastic support plate (2221); when the elastic When the support plate (2221) is subjected to external pressure, the elastic support plate (2221) shrinks longitudinally toward the base frame (1); the elastic support element (222) further includes an elastic force adjustment element (2224) capable of adjusting the support force of the elastic support plate (2221), and the elastic force adjustment element (2224) further includes a second pressure sensor (2228); the flat roller (31) is horizontally rotated and spanned between the two groups of support frames (33) through bearing seats (34) arranged at both ends; the two groups of retaining rollers (32) are respectively arranged on both sides of the support frame (33) through two groups of second connecting frames (36), and the two groups of retaining rollers (32) are respectively arranged near the feed port and the discharge port of the movable transmission unit (22).

2. The PVC film flat laminating equipment based on automatic adjustment of sheet thickness according to claim 1 is characterized in that: The longitudinal adjustment units (23) are provided in multiple groups, and the multiple groups of longitudinal adjustment units (23) are symmetrically arranged on both sides of the feed inlet of the movable transmission unit (22), and the output ends of the multiple groups of longitudinal adjustment units (23) are arranged in a vertical state facing the movable transmission unit (22).

3. The PVC film flat-laminating device based on automatic adjustment of sheet thickness according to claim 2 is characterized in that: The first pressure sensor (234) is fixedly arranged at the output end of the longitudinal adjustment unit (23).

4. The PVC film flat-laminating device based on automatic adjustment of sheet thickness according to claim 3 is characterized in that: The elastic force adjustment element (2224) is composed of a support seat (2225), a second electric push rod (2226) vertically fixed on the support seat (2225), and an adjustment frame (2227) horizontally fixed on the driving end of the second electric push rod (2226); a guide rod (2222) and a spring (2223) coaxially sleeved outside the guide rod (2222) are also vertically arranged at the bottom of the elastic support plate (2221); the upper end of the spring (2223) abuts against the lower surface of the elastic support plate (2221), and the lower end of the spring (2223) abuts against the upper surface of the adjustment frame (2227).

5. The PVC film flat-laminating device based on automatic adjustment of sheet thickness according to claim 4 is characterized in that: The first driving module (41) comprises a linear reciprocating driver (411), a second mounting frame (412), an adsorption module (413) and a third mounting frame (414); the linear reciprocating driver (411) is horizontally fixedly arranged on the base frame (1) via the second mounting frame (412); a plurality of adsorption modules (413) are arranged, and the plurality of adsorption modules (413) are arranged vertically at the output end of the linear reciprocating driver (411) via the third mounting frame (414), and the adsorption ends of the plurality of adsorption modules (413) are all arranged in the direction of the transmission module (2).

6. The PVC film flat-laminating device based on automatic adjustment of sheet thickness according to claim 5 is characterized in that: The adsorption module (413) is composed of a third electric push rod (4131) and a suction cup (4132) fixedly arranged at the output end of the third electric push rod (4131).

7. The PVC film flat-laminating device based on automatic adjustment of sheet thickness according to claim 1 is characterized in that: The laminating module (3) further comprises a support frame (33), a bearing seat (34), a guide roller (35), a second connecting frame (36) and a third connecting frame (37); the support frame (33) is provided in two groups, and the two groups of support frames (33) are symmetrically arranged on both sides of the transmission module (2) in a vertical state, and the guide roller (35) is fixedly arranged on one side of the laminating roller (31) near the feed inlet of the movable transmission unit (22) in a horizontal state through the third connecting frame (37), and the guide roller (35) is used to guide the release paper to be discharged.

8. The PVC film flat-laminating device based on automatic adjustment of sheet thickness according to claim 4 is characterized in that: The second pressure sensor (2228) is fixedly arranged at the output end of the second electric push rod (2226).

9. A method for laminating a PVC film by a laminating device based on automatic adjustment of the thickness of a sheet material, applied to the PVC film laminating device based on automatic adjustment of the thickness of a sheet material as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1: First, the plates to be laminated with PVC film are sequentially placed on the fixed transmission unit (21), and then the plates are gradually pushed to the movable transmission unit (22) by driving the first driving module (41). At this time, the plates are supported by the transmission roller group (221) so that they pass smoothly through the transmission area; S2: When the sheet material gradually enters the flat laminating area, that is, after the sheet material is completely transferred to the movable transfer unit (22), the longitudinal adjustment unit (23) is activated, and the sheet material is pressed by the first electric push rod (231), thereby dynamically adjusting the support height of the elastic support plate (2221). While the sheet material is pressed by the first electric push rod (231), the first pressure sensor (234) continuously records and feeds back the pressure output by the first electric push rod (231), so that the upper surface of the sheet material is maintained at a preset laminating height and lower than the setting of the retaining roller (32); S3: At this time, the plate continues to be transported toward the flat laminating roller (31) at a preset height and is placed under the retaining roller (32). The plate is then guided and transported by the retaining roller (32), so that the plate passes through the flat laminating roller (31) at a uniform height, and the PVC film is adhered to its surface by the flat laminating roller (31); until the plate is completely laminating.

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