A double-sided laminating method for sheet material

Abstract

The present invention relates to the technical field of plate lamination, and specifically to a method for double-sided lamination of plate materials. The method comprises the following steps: S1: a groove for inserting an extension plate is machined on a flat film material, and the film materials on both sides of the groove can cover the plate material; S2: the flat film material is placed on a flat plate, the flat plate is provided with an insertion slot, the groove portion is opposite to the insertion slot, and a pair of rotating pressing rollers are provided below the flat plate, and the pressing rollers are symmetrically arranged on both sides of the insertion slot; S3: the extension plate is vertically inserted downward into the groove portion; S4: the plate material is moved downward so that the plate material passes through the insertion slot. During this process, the flat film material is pressed down by the bottom edge and enters the insertion slot together with the plate material. The flat film material passing through the insertion slot is guided by the edge of the insertion slot and placed vertically on both sides of the plate material; S5: in the process of the bottom edge pressing the flat film material from top to bottom through the pair of pressing rollers, the pair of pressing rollers press the film materials on both sides of the groove portion onto both sides of the plate material. The method can achieve double-sided lamination of the plate material, and has the advantage of high lamination efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of plate coating, and in particular to a double-sided coating method for plate materials. Background Art

[0002] Traditional sheet metal lamination methods are suitable for single-sided lamination. Double-sided lamination typically involves flipping the sheet metal over and then laminating it again, resulting in low efficiency. Existing double-sided lamination processes are suitable for sheet metal that extends continuously in its length, using roll-shaped film for continuous lamination. However, since the film needs to be cut after each lamination operation, it is not suitable for intermittently conveyed single sheets. Summary of the Invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a double-sided laminating method for sheet materials, which adopts a single flat sheet of film material to laminar both sides of the sheet material at one time, and has the advantage of high laminating efficiency.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A double-sided lamination method for sheet materials is used to cover flat film materials on both sides of the sheet material body, an adhesive layer is attached to the flat film material and the side surfaces of the sheet material to be bonded, an extension plate is extended from the edge of one side of the sheet material, and a pair of bottom edges are provided on both sides of the sheet material corresponding to the proximal end of the extension plate (i.e., the extension plate is close to one end of the sheet material); since the extension plate is extended from one side of the sheet material, it is difficult to feed the material continuously, and only intermittent feeding can be adopted.

[0006] The steps include:

[0007] S1: A groove for inserting an extension plate is processed on the flat film material, and the film materials on both sides of the groove can cover the plate material;

[0008] S2: placing the flat sheet of film on a flat plate with a slot formed therein, the groove facing the slot, and a pair of rotating rollers disposed below the flat plate, the rollers being symmetrically disposed on both sides of the slot;

[0009] S3: Insert the extension plate vertically downward into the groove;

[0010] S4: Move the sheet material downward so that it passes through the insertion slot. During this process, the flat film material is pressed down by the bottom edge and enters the insertion slot together with the sheet material. The flat film material passing through the insertion slot is guided by the edge of the insertion slot and placed vertically on both sides of the sheet material.

[0011] S5: When the bottom edge of the flat film material is pressed from top to bottom between a pair of pressing rollers, the pair of pressing rollers press the film material on both sides of the groove portion onto both sides of the sheet material. After the sheet material and the flat film material have completely passed through the pair of pressing rollers, the flat film material is attached to both sides of the sheet material.

[0012] Based on the above method, a double-sided laminating method of a sheet material in the present application can realize double-sided lamination of the sheet material. It uses a single flat sheet of film material to realize double-sided lamination of both sides of the sheet material at one time, which has the advantage of high lamination efficiency.

[0013] Furthermore, in the double-sided lamination method of a sheet material in the present application, the adhesive layer is a hot-melt adhesive material, and the pressing roller is a hot pressing roller.

[0014] In order to avoid the use of a room temperature adhesive layer, there is a risk of the flat film material and the sheet material being bonded together when the flat film material passes through the insertion seam.

[0015] Furthermore, in a double-sided laminating method for sheet material in the present application, the opening width of the insertion slit is between b+4a and b+10a, where a is the thickness of the flat film material and b is the thickness of the sheet material.

[0016] If the opening of the slit is too narrow, the flat film material passing through the slit will be squeezed. If the opening of the slit is too wide, the length of the flat film material passing through the slit will be too long when the sheet material drops to the same height, causing the lower end of the flat film material to fall and separate from the sheet material before passing through the pressing roller.

[0017] Furthermore, in a double-sided laminating method for a sheet material in the present application, the groove is arranged in the center of the flat film material, and the extension plate is located in the center of the edge of the sheet material.

[0018] Furthermore, in a double-sided laminating method for sheet material disclosed herein, a pressure wheel is provided on the flat plate, the pressure wheel being pressed against the upper end of the flat sheet material, and the rotation direction of the pressure wheel corresponds to the direction of movement of the flat sheet material on the flat plate. As a preferred embodiment of the present application, this ensures that the flat sheet material is in contact with the flat plate before entering the slot, thereby preventing the flat sheet material from warping or wrinkling during movement.

[0019] Furthermore, in the double-sided laminating method of a sheet material in the present application, the thickness of the flat sheet of film material is greater than 0.2 mm. As a preferred solution of the present application, the flatness of the film material when it is laid on the flat plate can be ensured.

[0020] Furthermore, in a double-sided lamination method of a sheet material in the present application, in step S2, the groove portion is adapted to the proximal cross-section of the extension plate, and the groove portion is formed by laser cutting.

[0021] Furthermore, in a double-sided lamination method for sheet material disclosed herein, a rubber anti-slip pad is attached to the upper surface of the flat plate, and the thickness of the rubber anti-slip pad is less than 1 mm. As a preferred embodiment of this application, the rubber has an anti-slip effect when in contact with the flat sheet material. When the bottom edge pushes the flat sheet material to move, the flat plate exerts a certain tension on the flat sheet material to ensure its flatness. The thickness of the rubber anti-slip pad is less than 1 mm to prevent the pressure wheel from pressing down on the flat sheet material, causing it to sink excessively and thus crease.

[0022] Furthermore, a double-sided laminating method for a sheet material in the present application further includes a positioning assembly, wherein the positioning assembly includes a positioning groove provided above the flat plate and a positioning support portion movably provided below the insertion slot;

[0023] In step S3, the positioning grooves are used to position the edges of the sheet material on both sides thereof and are placed in the positioning grooves, and the positioning supports are used to support the bottom of the extension plate.

[0024] In step S4, before the sheet material is moved downward, the positioning support is moved out of the insertion slot. As a preferred solution of the present application, the horizontal and vertical positioning of the sheet material before movement can be achieved respectively, thereby preventing the sheet material from deviating from its posture before movement.

[0025] Furthermore, a double-sided laminating method for a sheet material in the present application further includes a conveying module, wherein the conveying module is arranged below the flat plate, and the conveying module includes a moving component and a clamping component arranged on the moving component;

[0026] The pressure rollers are arranged on a pair of horizontal drive assemblies;

[0027] In step S4, the clamping assembly clamps the extension plate, and the moving assembly drives the clamping assembly to move downward until the bottom edge is located at the center of the vertical position of the pressing roller, and the sheet material is between the pair of pressing rollers;

[0028] In step S5, a pair of horizontal drive assemblies drive a pair of pressure rollers to move relative to each other to press the lower end of the sheet material. The moving assembly continues to move downward, allowing the sheet material and the flat film to completely pass through the pair of pressure rollers. Finally, the clamping assembly releases the extension plate to release the material. As a preferred embodiment of the present application, relying solely on the sheet material's own weight to press the flat film material downward and move it between the pressure rollers has the disadvantage of low stability. If the sheet material is pushed down from above, there is a risk of damage to the sheet material. The above method can ensure the stability of the sheet material as it moves between the pressure rollers.

[0029] It can be seen from the above technical solution that the present invention has the following beneficial effects:

[0030] Because the sheet material has an extension plate extending from one side, continuous feeding is difficult and requires intermittent feeding. The present invention provides a double-sided laminating method for sheet material, capable of laminating both sides of the sheet material. Using a single flat sheet of film, both sides of the sheet material can be laminated simultaneously without the need for flipping, resulting in high laminating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of a flat film material and a sheet material in one embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of a step in a method for double-sided lamination of a sheet material in one embodiment of the present application;

[0033] Figure 3 This is a schematic diagram of a step in a method for double-sided lamination of a sheet material in one embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of a step in a method for double-sided lamination of a sheet material in one embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of a step in a method for double-sided lamination of a sheet material in one embodiment of the present application;

[0036] Figure 6 This is a schematic diagram of a step in a method for double-sided lamination of a sheet material in one embodiment of the present application;

[0037] Figure 7 This is a schematic diagram of a step in a method for double-sided lamination of a sheet material in one embodiment of the present application;

[0038] Figure 8 Schematic diagram of a double-sided laminating device in one embodiment of the present application (sheet material and film material are placed on a flat plate);

[0039] Figure 9 This is a schematic diagram of a double-sided laminating device in one embodiment of the present application;

[0040] Figure 10 for Figure 8 A partial enlarged view of the area C in the middle circle;

[0041] Figure 11 for Figure 9 A partial enlarged view of the area D in the middle circle;

[0042] Figure 12 is a cross-sectional view of the pressure wheel assembly;

[0043] Figure 13 It is a schematic diagram of the connection between the sliding seat and the moving seat;

[0044] Figure 14It is a schematic diagram of the corresponding components of the mobile seat;

[0045] Figure 15 This is an exploded schematic diagram of the components corresponding to the moving seat;

[0046] Figure 16 Schematic diagram of the limit frame;

[0047] Figure 17 This is a cross-sectional view of a double-sided laminating device in one embodiment of the present application (the movable block is in a first posture);

[0048] Figure 18 This is a cross-sectional view of a double-sided laminating device in one embodiment of the present application (the movable block is in a second posture);

[0049] Figure 19 This is a cross-sectional view of a double-sided laminating device in one embodiment of the present application (the movable block is in a third posture);

[0050] Figure 20 for Figure 17 A partial enlarged view of the middle frame E area;

[0051] Figure 21 for Figure 18 A partial enlarged view of the F area in the middle frame;

[0052] Figure 22 for Figure 19 A partial enlarged view of the G area in the middle frame.

[0053] In the figure: 1-fixed frame; 11-guide rod; 12-top piece; 121-roller; 13-limiting frame; 131-positioning plate; 132-limiting notch; 133-rod body; 134-mounting seat; 14-flat plate; 141-insertion slot; 142-right-angle positioning block; 15-pressing wheel assembly; 151-pressing wheel; 152-pressing wheel frame; 1520-arc groove; 1521-hinged seat; 1522-locking seat; 153-mounting rod; 154-limiting screw; 155-locking nut;

[0054] 21 - moving seat; 210 - cavity; 211 - clamping plate; 2110 - movable cavity; 21101 - limited position surface; 2111 - mounting plate; 21110 - through groove; 21111 - mounting block; 212 - connecting plate; 2121 - linear bearing; 22 - movable block; 221 - positioning tongue; 2211 - positioning surface; 2212 - driving surface; 222 - chuck; 223 - transmission guide surface; 224 - limiting hook; 23 - first cylinder; 231 - roller; 24 - torsion spring; 241 - extension foot;

[0055] 31-pressing roller; 32-sliding seat; 321-positioning block; 3211-top plate; 33-transmission connecting rod;

[0056] 4- driving cylinder; 5- discharging conveyor;

[0057] 8- flat film material; 81- groove portion; 9- sheet material; 91- extension plate; 92- bottom edge. DETAILED DESCRIPTION

[0058] Example 1

[0059] A double-sided lamination method for sheet metal, such as Figure 1 As shown, it is used to cover the flat film material 8 on both sides of the sheet material 9. An adhesive layer is attached to the sides of the flat film material 8 and the sheet material 9 to be bonded. An extension plate 91 is extended from the edge of one side of the sheet material 9. A pair of bottom edges 92 are provided on both sides of the sheet material 9 corresponding to the proximal end of the extension plate 91 (i.e., the end of the extension plate 91 close to the sheet material 9);

[0060] The steps include:

[0061] S1: A groove 81 for inserting the extension plate 91 is processed on the flat film 8, and the film on both sides of the groove 81 can cover the plate 9;

[0062] S2: If Figure 2 As shown, a flat sheet of film 8 is placed on a flat plate 14, which is provided with an insertion slot 141, with the groove 81 facing the insertion slot 141. A pair of rotatable pressing rollers 31 are provided below the flat plate 14, and the pressing rollers 31 are symmetrically arranged on both sides of the insertion slot 141.

[0063] S3: Insert the extension plate 91 vertically downward into the groove 81;

[0064] S4: As Figure 4 As shown, the sheet material 9 is moved downward so as to pass through the insertion slot 141. During this process, the flat film material 8 is pressed downward by the bottom edge 92 and enters the insertion slot 141 together with the sheet material 9. The flat film material 8 passing through the insertion slot 141 is guided by the edge of the insertion slot 141 and is placed vertically on both sides of the sheet material 9.

[0065] S5: If Figure 4 and Figure 5 As shown, in the process of the bottom edge 92 pressing the flat film material 8 from top to bottom passing between a pair of pressing rollers 31, the pair of pressing rollers 31 press the film material on both sides of the groove 81 on both sides of the sheet material 9 respectively. After the sheet material 9 and the flat film material 8 completely pass through the pair of pressing rollers 31, the flat film material 8 is attached to both sides of the sheet material 9.

[0066] Based on the above method, a double-sided laminating method of a sheet material in the present application can realize double-sided laminating of a sheet material 9. A single flat sheet of film material 8 is used to realize double-sided laminating of both sides of the sheet material 9 at one time, which has the advantage of high laminating efficiency.

[0067] In this embodiment, the width of the flat film 8 is greater than the horizontal width of the plate 9, and the length of the flat film 8 is greater than twice the vertical length of the plate 9. Specifically, the plate 9 is printed with a pattern, and the flat film 8 covers the patterned area of ​​the plate 9. The extension plate 91 is provided with a hanging hole for hanging the plate 9.

[0068] In this embodiment, the adhesive layer is a hot-melt adhesive material, and the pressure roller 31 is a hot-pressing roller. Specifically, the adhesive layer can be made of hot-melt TPU. This avoids the risk of adhesion between the flat film 8 and the sheet material 9 when the flat film 8 passes through the insertion slit 141, as would be the case with a room-temperature adhesive layer.

[0069] In this embodiment, the opening width of the slit 141 ranges from b+4a to b+10a, where a is the thickness of the flat film material 8 and b is the thickness of the sheet material 9. If the opening of the slit 141 is too narrow, the flat film material 8 passing through the slit 141 may be squeezed. If the opening of the slit 141 is too wide, the length of the flat film material 8 passing through the slit 141 may be too long when the sheet material 9 descends the same height, causing the lower end of the flat film material 8 to fall and separate from the sheet material 9 before passing through the pressing roller 31.

[0070] In this embodiment, the groove 81 is provided in the center of the flat film material 8 , and the extension plate 91 is located in the center of the edge of the plate material 9 .

[0071] In this embodiment, a pressing wheel 151 is provided on the flat plate 14. The pressing wheel 151 is pressed against the upper end of the flat film 8. The rotation direction of the pressing wheel 151 corresponds to the movement direction of the flat film 8 on the flat plate 14. This ensures that the flat film 8 is in contact with the flat plate 14 before entering the insertion slot 141, preventing the flat film 8 from warping or wrinkling during movement.

[0072] In this embodiment, the thickness of the flat sheet of film 8 is greater than 0.2 mm, which can ensure the flatness of the film when it is spread on the flat plate 14.

[0073] In this embodiment, in step S2 , the groove portion 81 is adapted to the proximal cross-section of the extension plate 91 , and the groove portion 81 is formed by laser cutting.

[0074] In this embodiment, a rubber anti-skid pad is attached to the upper surface of the flat plate 14 , and the thickness of the rubber anti-skid pad is less than 1 mm.

[0075] The rubber has an anti-slip effect when in contact with the flat film material 8. When the bottom edge 92 pushes the flat film material 8 to move, the flat plate 14 exerts a certain tension on the flat film material 8 to ensure the flatness of the flat film material 8. The thickness of the rubber anti-slip pad is less than 1 mm to prevent the pressure wheel 151 from pressing down on the flat film material 8 and causing excessive sinking, which could result in creases in the flat film material 8.

[0076] In this embodiment, a positioning assembly is further included. The positioning assembly includes a positioning slot provided above the flat plate 14 and a positioning support portion movably provided below the insertion slot 141 .

[0077] In step S3 , the positioning grooves are used to position the edges of the plate 9 on both sides so that they are placed in the positioning grooves, and the positioning supports are used to support the bottom of the extension plate 91 .

[0078] In step S4 , before the sheet material 9 is moved downward, the positioning support is moved out of the insertion slot 141 .

[0079] The horizontal and vertical positioning of the sheet material 9 before movement can be achieved respectively, thereby preventing the sheet material 9 from deviation in posture before movement.

[0080] like Figure 3 As shown, in this embodiment, a conveying module is further included. The conveying module is arranged below the flat plate 14. The conveying module includes a moving component and a clamping component arranged on the moving component.

[0081] The pressure roller 31 is arranged on a pair of horizontal drive assemblies;

[0082] In step S4, the clamping assembly clamps the extension plate 91, and the moving assembly drives the clamping assembly to move downward until the bottom edge 92 is located at the center of the vertical position of the pressing roller 31. At this time, the sheet material 9 is between the pair of pressing rollers 31;

[0083] In step S5, a pair of horizontal drive assemblies drive a pair of pressure rollers 31 to move relative to each other, pressing the lower end of the sheet material 9. The moving assembly continues to move downward, allowing the sheet material 9 and the flat film 8 to completely pass through the pair of pressure rollers 31. Finally, the clamping assembly releases the extension plate 91 to release the sheet material. Relying solely on the weight of the sheet material 9 to press the flat film 8 downward between the pressure rollers 31 would have the disadvantage of low stability. Pushing the sheet material 9 downward from above would risk damaging it. The above method ensures the stability of the sheet material 9 as it moves between the pressure rollers 31.

[0084] The overall downward movement of the sheet 9 is achieved by relying on the continuous downward movement of the moving component. The stroke of the moving component needs to correspond to the vertical length of the sheet 9. If the length of the sheet 9 is too long, the longitudinal dimension of the moving component will be too long, affecting the manufacturing cost.

[0085] In order to solve the above problem, in other embodiments, before the sheet material 9 is moved downward in step S5, Figure 6 As shown, the clamping assembly releases the extension plate 91, and then Figure 7 As shown, the pressing roller 31 is driven to rotate, pressing the flat film material 8 on both sides of the sheet material 9 and simultaneously pushing the coated sheet material 9 downward.

[0086] Example 2

[0087] According to a double-sided laminating method for a sheet material provided in Example 1, this embodiment provides a double-sided laminating device, such as Figure 8 and Figure 9 Shown, including

[0088] The frame 1 is provided with a flat plate 14, and a slot 141 is provided in the center of the flat plate 14.

[0089] like Figure 13 As shown, the moving assembly includes a moving base 21 and a first driving device that drives the moving base 21 to move in a vertical direction, and a clamping assembly is provided on the moving base 21;

[0090] The machine also includes a pair of sliding seats 32, which are horizontally slidably arranged on the frame 1. The pair of sliding seats 32 are arranged on both sides below the insertion slot 141, and the pair of sliding seats 32 are symmetrically arranged on both sides of the movable seat 21. The sliding seats 32 are provided with a rotationally driven pressure roller 31, and the sliding seats 32 are rotatably connected to a transmission connecting rod 33. The transmission connecting rod 33 is rotatably arranged on the movable seat 21 at one end away from the sliding seat 32.

[0091] The clamping assembly is used to clamp the bottom of the sheet material 9 inserted into the insertion slot 141. The first driving device is used to drive the movable seat 21 to move downward until the position where the clamped material is to be coated is consistent with the center height of the pressure roller 31. Due to the transmission connection of the transmission connecting rod 33, a pair of sliding seats 32 move synchronously relative to each other in the horizontal direction until a pair of pressure rollers 31 are in contact with both sides of the material.

[0092] Based on the above structure, a double-sided laminating device includes the following steps when used:

[0093] a. Lay the flat sheet of film 8 flat on the flat plate 14. A groove 81 is preset in the center of the flat sheet of film 8. The groove 81 is aligned with the insertion slit 141. An extension plate 91 is provided at the lower end of the sheet 9 to pass through the groove 81. A pair of bottom edges 92 are provided on both sides of the sheet 9 corresponding to the proximal end of the extension plate 91 (i.e., the end of the extension plate 91 near the sheet 9). The sheet 9 is placed vertically above the insertion slit 141. The extension plate 91 passes through the groove 81 from top to bottom so that the bottom edge 92 is in contact with the upper end of the flat sheet of film 8. At this time, the extension plate 91 passes through the insertion slit 141.

[0094] b. Clamp the bottom of the sheet 9 by the clamping assembly;

[0095] c. The first driving device is used to drive the movable seat 21 to move downward to the position where the clamped material is to be coated, that is, the proximal end of the extension plate 91 is at the same height as the center of the pressing roller 31. At this time, the pair of sliding seats 32 move synchronously relative to each other in the horizontal direction until the pair of pressing rollers 31 are in contact with both sides of the sheet material 9, and the lower end of the flat film material 8 is pressed onto the sheet material 9;

[0096] d. The clamping assembly releases the sheet 9;

[0097] e. Rotate and drive a pair of pressure rollers 31, and the rotation directions of the pair of pressure rollers 31 are opposite. The pair of pressure rollers 31 press the film materials on both sides of the groove 81 on both sides of the sheet material 9 respectively, and at the same time push the sheet material 9 that has completed the coating to move downward. After the sheet material 9 and the flat film material 8 have completely passed through the pair of pressure rollers 31, the flat film material 8 is attached to both sides of the sheet material 9.

[0098] Therefore, a double-sided lamination method of a sheet material in the present application realizes the coordinated movement of the movable seat 21 and the sliding seat 32 by the transmission connecting rod 33, thereby realizing the synchronous operation of the vertical positioning of the sheet material 9 and the horizontal positioning of the pressure roller 31, and uses a single driving device as a whole, thereby reducing manufacturing costs and improving production efficiency.

[0099] In this embodiment, the first drive device is a drive cylinder 4. The fixed assembly of drive cylinder 4 is mounted on frame 1, and the movable assembly of drive cylinder 4 is connected to one of the sliding seats 32. Drive cylinder 4 is used to drive the horizontal movement of sliding seat 32, thus corresponding to the horizontal drive assembly in Example 1. Drive cylinder 4 is positioned entirely laterally outside of sliding seat 32, driving the horizontal movement of sliding seat 32 to drive the synchronous vertical movement of movable seat 21. In other embodiments, drive cylinders 4 are provided in pairs, each synchronously driving a pair of sliding seats 32.

[0100] In this embodiment, the hinge point of the transmission connecting rod 33 at one end of the sliding seat 32 is the rotation axis of the pressure roller 31, and the hinge point of the transmission connecting rod 33 at one end of the sliding seat 32 is located obliquely above the hinge point on the movable seat 21. In this embodiment, a positioning block 321 is provided between the pair of sliding seats 32. During the horizontal movement of the pair of sliding seats 32 in relative directions, the pair of pressure rollers 31 are ultimately limited to the two sides of the positioning block 321, at which point the pair of pressure rollers 31 are in contact with the material on both sides. The positioning block 321 is used to limit the movement of the pair of sliding seats 32 in relative directions. In this embodiment, a top plate 3211 is provided at the upper end of the positioning block 321. The top plate 3211 is fixed to the sliding seat 32, and the positioning block 321 extends to the front end of the sliding seat 32. The positioning block 321 is provided on the sliding seat 32 near the drive cylinder 4.

[0101] like Figure 14 As shown, in this embodiment, a vertically penetrating cavity 210 is provided on the movable seat 21 . The cavity 210 is located below the insertion slot 141 and faces the insertion slot 141 .

[0102] like Figure 14 and 15 As shown, corresponding to the positioning support portion of the positioning assembly in Example 1, in this embodiment, a positioning tongue 221 is movably provided on the movable seat 21, and the positioning tongue 221 is driven by a second driving device, and the second driving device is used to drive the positioning tongue 221 to move so that the positioning tongue 221 extends into the cavity 210 or moves out of the cavity 210.

[0103] In the initial state, the movable base 21 is moved to its highest position, with the sheet 9 placed vertically on the flat plate 14. The lower end of the sheet 9 passes through the insertion slot 141 and enters the cavity 210. The positioning tongue 221 is used to position the lower end of the sheet 9. A pair of retaining notches 132 are engaged on the edges of the sheet 9 to horizontally position the vertically positioned sheet 9. Before the sheet 9 moves relative to the movable base 21, a second actuator drives the positioning tongue 221 out of the cavity 210. The second actuator is specifically a first cylinder 23, which is positioned horizontally, with the positioning tongue 221 located at the front end.

[0104] In this embodiment, the movable base 21 includes a pair of spaced-apart clamping plates 211 and a pair of connecting plates 212. The cavity 210 is disposed between the pair of clamping plates 211. The pair of connecting plates 212 are disposed at both ends of the clamping plates 211, connecting the pair of clamping plates 211. Specifically, the frame 1 is provided with a pair of vertically extending guide rods 11. The pair of connecting plates 212 are slidably mounted on the pair of guide rods 11. Linear bearings 2121 are mounted on the connecting plates 212, and the linear bearings 2121 slideably engage with the guide rods 11.

[0105] In this embodiment, the clamping assembly includes a chuck 222 and a splint 211 respectively arranged on both sides of the cavity 210. The chuck 222 is driven by a driving device to move the chuck 222 toward the proximal side or distal side of the splint 211. In the process of moving the chuck 222 toward the proximal side of the splint 211, it can clamp the sheet material 9 positioned above the positioning tongue 221.

[0106] The clamping assembly clamps the lower end of the sheet material 9 between the clamping head 222 and the clamping plate 211. When the clamping head 222 and the positioning tongue 221 are simultaneously moved out of the outside of the cavity 210, the sheet material 9 can be moved downward out of the cavity 210.

[0107] like Figure 14 、 15 ,as well as Figures 17 to 22 As shown, in this embodiment, the positioning tongue 221 and the clamping head 222 are integrated on a movable block 22. Specifically, the movable block 22 is rotatably provided on the movable base 21, and the movable block 22 can switch between a first posture, a second posture, and a third posture. The rotating shaft of the movable block 22 is provided on one side of the cavity 210, and the positioning tongue 221 and the clamping head 222 are extended and provided on the movable block 22.

[0108] like Figure 20 As shown, when the movable block 22 is in the first posture, the positioning tongue 221 extends into the cavity 210 from one side of the cavity 210, and the positioning tongue 221 is used to support the bottom of the sheet material 9 that penetrates into the cavity 210;

[0109] like Figure 21As shown, when the movable block 22 is in the second posture, the chuck 222 extends into the cavity 210 from one side of the cavity 210, and the plate 9 that penetrates into the cavity 210 is pressed against the side wall of the cavity 210 away from the movable block 22 by the chuck 222;

[0110] like Figure 22 As shown, when the movable block 22 is in the third posture, the positioning tongue 221 and the clamping head 222 rotate out of the cavity 210.

[0111] In this embodiment, one of the clamping plates 211 is a mounting plate 2111, and the movable block 22 is disposed on the mounting plate 2111. Correspondingly, the mounting plate 2111 is provided with a movable cavity 2110 for accommodating the movable block 22 for rotation, and the movable block 22 is provided with a transmission guide surface 223.

[0112] The mounting plate 2111 is provided with a first cylinder 23 which is transmission-connected to the movable block 22 , and the upper end of the telescopic rod of the first cylinder 23 is provided with a roller 231 ;

[0113] When the movable block 22 is in the first posture, the transmission guide surface 223 extends out of the mounting plate 2111 away from the side of the cavity 210, the first cylinder 23 is arranged below the transmission guide surface 223, and the transmission guide surface 223 is arranged opposite to the roller 231;

[0114] When the telescopic rod of the first cylinder 23 is pushed out, the roller 231 can push the transmission guide surface 223 extending out of the mounting plate 2111 to rotate the movable block 22 to the second posture.

[0115] Specifically, the number of the first cylinders 23 is 2, and they are symmetrically arranged along the width direction of the movable block 22. In this embodiment, the transmission guide surface 223 is an inwardly concave arc surface tangent to the limiting hook portion 224. When the movable block 22 is in the first posture and is clamped, the roller 231 is pushed out by the first cylinder 23 to push the transmission guide surface 223, so that the movable block 22 rotates along the B direction to the second posture. It should be noted that in this embodiment, during the process of the movable block 22 switching from the first posture to the second posture, the sheet material 9 will have a certain degree of falling tendency, and the pressure wheel assembly 15 presses the flat film material 8 to generate a certain pulling force, which can overcome the falling of the sheet material 9 during this process. In this embodiment, a limiting hook portion 224 is provided at the distal end of the transmission guide surface 223. When the movable block 22 is in the second posture, the transmission guide surface 223 rotates to the inside of the movable cavity 2110, and the limiting hook portion 224 extends out of the mounting plate 2111. The roller 231 abuts against the limiting hook portion 224, and the limiting hook portion 224 is attached to the oblique upper part of the roller 231. It should be noted that the "distal end" of the rotating component defined in this application refers to the end of each component away from the rotating axis. In this embodiment, the inner side of the limiting hook portion 224 is an arc surface adapted to the outer edge of the roller 231. The limiting hook portion 224 is used to limit the roller 231 from extending too far forward and convert the thrust of the roller 231 into a torque that rotates the movable block 22 in the tightening direction.

[0116] In this embodiment, a positioning surface 2211 is provided on one side of the positioning tongue 221. When the movable block 22 is in the first posture, the positioning surface 2211 faces upward to support the bottom of the sheet 9; a driving surface 2212 is provided on the side of the positioning tongue 221 away from the positioning surface 2211; it also includes a top piece 12, the top piece 12 is fixed on the frame 1, the top piece 12 is vertically arranged, and the top piece 12 is arranged below the movable block 22. Corresponding to the top piece 12, a through groove 21110 is provided at the lower end of the mounting plate 2111, and the through groove 21110 extends vertically into the movable cavity 2110; when the movable block 22 is in the second posture, the driving surface 2212 is located at the lower end of the movable block 22, and the upper end of the top piece 12 faces the driving surface 2212. At this time, after the second driving device drives the movable seat 21 to descend a preset distance, the top piece 12 is used to push the driving surface 2212 to make the movable block 22 rotate to the third posture.

[0117] like Figure 22As shown, specifically, the driving surface 2212 is arc-shaped, one end of the driving surface 2212 extends to intersect with the distal end of the positioning surface 2211, and the other end of the driving surface 2212 is connected to the transmission guide surface 223. Due to the interference of the driving surface 2212 on the movable block 22 with the top member 12, the movable block 22 rotates from the second posture to the third posture. During this process, the positioning tongue 221 rotates toward the side of the cavity 210, and conversely, the chuck 222 rotates toward the side away from the cavity 210. In the third posture, the positioning tongue 221 is still entirely within the movable cavity 2110, and the chuck 222 rotates entirely into the movable cavity 2110. At the same time, the limiting hook 224 rotates downward synchronously, and the roller 231 is subjected to pressure from the limiting hook 224, causing the telescopic rod of the first cylinder 23 to retract as a whole. It should be noted that when the first cylinder 23 is in the extended state and the roller 231 is subjected to a downward pressure greater than the outward thrust of the telescopic rod of the first cylinder 23 by the cylinder body, the roller 231, i.e., the telescopic rod of the cylinder, can be retracted to a preset size. At this time, the limit hook 224 is used to convert the force generated by the rotation of the movable block 22 toward the third posture into a force that presses the roller 231 downward. The upper end of the top piece 12 is provided with a roller 121 for rotation. When the roller 121 is in contact with the driving surface 2212, it is tangent to point A in the cross section. Point A is on the side of the straight line near the cavity 210 where the center of rotation of the movable block 22 is located. Specifically, the top piece 12 is always arranged in the through groove 21110. The top piece 12 is a vertically arranged plate.

[0118] like Figure 15 As shown, in this embodiment, a torsion spring 24 is provided on both sides of the movable block 22. The torsion spring 24 is coaxially arranged with the rotating shaft of the movable block 22. A pair of extension legs 241 are provided at each end of the torsion spring 24, which are respectively connected to the movable block 22 and the movable seat 21. Specifically, the movable block 22 and the movable seat 21 are provided with spring grooves that adapt to the extension legs 241. A limiting surface 21101 is provided within the movable cavity 2110. The torsion spring 24 is used to apply a torsional force to the movable block 22, causing the movable block 22 to abut against the limiting surface 21101 in its natural state. In this state, the movable block 22 is in a first posture. When the movable block 22 is in the second and third postures, the torsion spring 24 is in a compressed and energy-accumulating state. When the first cylinder 23 retracts until the roller 231 is disengaged from the transmission guide surface 223, the torsion spring 24 can return the movable block 22 to the first posture. In this embodiment, a mounting block 21111 is connected to the mounting plate 2111. The mounting block 21111 is embedded in the mounting plate 2111. The movable block 22 is rotatably mounted on the mounting block 21111. The movable cavity 2110 is disposed on the mounting block 21111. Correspondingly, the torsion spring 24 is also disposed on the mounting block 21111. The separate mounting block 21111 can reduce the difficulty of manufacturing the mounting plate 2111.

[0119] like Figure 16As shown, in this embodiment, a limit frame 13 is provided on both sides of the frame 1. The limit frame 13 includes a rod body 133 fixed to the frame 1 and a mounting seat 134 sleeved on the rod body 133. An adjusting hand wheel is provided on the mounting seat 134. The adjusting hand wheel is threadedly connected to the mounting seat 134. The front end of the adjusting hand wheel contacts the rod body 133. A positioning plate 131 is provided on the limit frame 13. The positioning plate 131 is along the The flat plate 14 is slidably set on the mounting seat 134 in the width direction, and the positioning plate 131 is provided with a long hole extending in the same direction as the sliding direction. Corresponding to the long hole, a limiting screw is passed through the mounting seat 134, and the limiting screw passes through the long hole. A pair of nuts are provided on the limiting screw for locking the mounting seat 134 and the positioning plate 131. The adjacent ends of a pair of positioning plates 131 are provided with a front side and upper and lower opening limiting grooves 132, which correspond to the positioning grooves in the corresponding positioning components in Example 1.

[0120] like Figure 10 As shown, this embodiment further includes a set of right-angle positioning blocks 142, which are disposed on the flat plate 14. Each set of right-angle positioning blocks 142 corresponds to the four right angles of the rectangular placement area on the flat plate 14. The right-angle profile of the right-angle positioning blocks 142 increases linearly from bottom to top. The right-angle positioning blocks 142 are used to locate the four corners of the flat sheet of film 8 placed on the flat plate 14. The right-angle profile of the right-angle positioning blocks 142 increases linearly from bottom to top, facilitating the downward insertion of the flat sheet of film 8 into the placement cavity formed by the right-angle positioning blocks 142.

[0121] like Figure 11 and 12 As shown, in this embodiment, a pressure wheel assembly 15 is also included, and the pressure wheel assembly 15 includes: a pressure wheel frame 152, the pressure wheel frame 152 is arranged on the outside of the flat plate 14, and a mounting rod 153 is rotatably provided on the pressure wheel frame 152, and the front end of the mounting rod 153 extends toward the film material placement area of ​​the flat plate 14; a pressure wheel 151, the pressure wheel 151 is rotatably installed at the front end of the mounting rod 153, and the radial cross-section of the outer edge of the pressure wheel 151 is arc-shaped; the pressure wheel assemblies 15 are arranged in pairs on both sides of the flat plate 14.

[0122] During use, the pressure wheel 151 is pressed against the upper end of the flat film material 8 by rotating the mounting rod 153. The rotation direction of the pressure wheel 151 corresponds to the movement direction of the flat film material 8 on the flat plate 14, ensuring that the flat film material 8 is in contact with the flat plate 14 before entering the insertion slot 141, thereby preventing the flat film material 8 from warping or wrinkling during movement. In this embodiment, when the pressure wheel 151 is pressed against the flat film material 8, the rotation axis of the pressure wheel 151 is parallel to the flat plate 14 and perpendicular to the movement direction of the flat film material 8 on the flat plate 14. Specifically, the radial cross-section of the outer edge of the pressure wheel 151 is semicircular. Two pairs of pressure wheel assemblies 15 are provided on each side of the insertion slot 141. In order to prevent the pressure wheel 151 from leaving marks on the flat film material 8, the flat film material 8 is wider than the transverse dimension of the sheet material 9 in the width direction, and the pressure wheel 151 presses on the portion of the flat film material 8 that exceeds the outer edge of the sheet material 9.

[0123] In this embodiment, the pressure roller frame 152 includes a hinge seat 1521, and the mounting rod 153 is arranged on the hinge seat 1521. The pressure roller frame 152 also includes a locking seat 1522. The locking seat 1522 is arranged on the side of the hinge seat 1521 near the flat plate 14. The locking seat 1522 is provided with an arc groove 1520. The center of the arc groove 1520 is consistent with the hinge seat 1521, and the arc groove 1520 axially extends through the upper end opening.

[0124] The mounting rod 153 is further comprised of a locking member for locking the mounting rod 153 in the arcuate slot 1520. The mounting rod 153 is rotated upward out of the arcuate slot 1520 to place the flat film material 8 on the flat plate 14. Subsequently, the mounting rod 153 is rotated into the arcuate slot 1520 and pressed onto the flat film material 8. The mounting rod 153 is locked to the arcuate slot 1520 by the locking member to ensure the stability of the pressing wheel 151 pressing on the flat film material 8. In this embodiment, the locking component includes a limit screw 154 and a locking nut 155. The limit screw 154 is mounted on the mounting rod 153. The radial dimension of the limit screw 154 is adapted to the width of the arcuate slot 1520. The locking nut 155 is disposed at the front end of the mounting rod 153. When the mounting rod 153 rotates within the range of the arcuate slot 1520, the limit screw 154 axially penetrates the arcuate slot 1520. At this time, tightening the locking nut 155 allows the mounting rod 153 to be locked to the arcuate slot 1520. Specifically, a pair of locking seats 1522 are provided on both sides of the mounting rod 153. When locked, the pair of locking seats 1522 are respectively sandwiched between the screw head of the limit screw 154 and the mounting rod 153, and between the mounting rod 153 and the locking nut 155.

[0125] The technical principles of the present invention have been described above in conjunction with specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A double-sided laminating method for sheet material, characterized in that: Used to cover the flat film material (8) on both sides of the plate material (9), the flat film material (8) and the plate material (9) are attached with an adhesive layer on the sides to be bonded, an extension plate (91) is extended from one edge of the plate material (9), and a pair of bottom edges (92) are provided on both sides of the proximal end of the extension plate (91) of the plate material (9); The steps include: S1: A groove (81) for inserting an extension plate (91) is processed on the flat film material (8), and the film materials on both sides of the groove (81) can cover the plate material (9); S2: placing the flat film material (8) on a flat plate (14), the flat plate (14) being provided with an insertion slit (141), the groove portion (81) being directly opposite to the insertion slit (141), and a pair of rotatable pressing rollers (31) being provided below the flat plate (14), the pressing rollers (31) being symmetrically arranged on both sides of the insertion slit (141); S3: Insert the extension plate (91) vertically downward into the groove (81); S4: moving the sheet material (9) downward so that the sheet material (9) passes through the insertion slit (141). During this process, the flat film material (8) is pressed downward by the bottom edge (92) and enters the insertion slit (141) together with the sheet material (9). The flat film material (8) passing through the insertion slit (141) is guided by the edge of the insertion slit (141) and is vertically placed on both sides of the sheet material (9); S5: When the bottom edge (92) presses the flat film material (8) from top to bottom and passes between the pair of pressing rollers (31), the pair of pressing rollers (31) presses the film material on both sides of the groove (81) onto both sides of the sheet material (9). After the sheet material (9) and the flat film material (8) have completely passed through the pair of pressing rollers (31), the flat film material (8) is attached to both sides of the sheet material (9); It also includes a conveying module, which is arranged below the flat plate (14), and includes a moving component and a clamping component arranged on the moving component; The pressure roller (31) is arranged on a pair of horizontal drive assemblies; In step S4, the clamping assembly clamps the extension plate (91), and the moving assembly drives the clamping assembly to move downward until the bottom edge (92) is located at the center of the vertical position of the pressing roller (31), and at this time the sheet material (9) is between the pair of pressing rollers (31); In step S5, a pair of horizontal drive assemblies drives a pair of pressing rollers (31) to move relative to each other to press the lower end of the sheet material (9); The moving assembly comprises a moving seat (21), wherein the moving seat (21) is provided with a vertically penetrating cavity (210); The clamping assembly comprises a movable block (22), wherein the movable block (22) is rotatably mounted on a movable seat (21), a rotating shaft of the movable block (22) is arranged on one side of the cavity (210), and a positioning tongue (221) and a clamping head (222) are extended from the movable block (22); the movable block (22) can be rotated to switch between a first posture, a second posture and a third posture; when the movable block (22) is in the first posture, the positioning tongue (221) extends into the cavity (210) from one side of the cavity (210); when the movable block (22) is in the second posture, the clamping head (222) extends into the cavity (210) from one side of the cavity (210); when the movable block (22) is in the third posture, the positioning tongue (221) and the clamping head (222) rotate out of the cavity (210); In step S3, the movable block (22) is in a first posture, the plate (9) enters the cavity (210) from top to bottom, and the positioning tongue (221) is used to support the bottom of the extension plate (91) that penetrates into the cavity (210); In steps S4 and S5, the movable block (22) switches to a second posture, and the extension plate (91) inserted into the cavity (210) is pressed against the side wall of the cavity (210) away from the movable block (22) by the clamp (222); After completing step S5, the movable block (22) switches to the third posture; The invention also includes a pair of sliding seats (32), the pair of sliding seats (32) are arranged on both sides below the insertion slot (141), the pair of sliding seats (32) are symmetrically arranged on both sides of the movable seat (21), the rotationally driven pressure roller (31) is arranged on the sliding seat (32), the sliding seat (32) is rotatably connected to a transmission connecting rod (33), and the transmission connecting rod (33) is rotatably arranged on the movable seat (21) at one end away from the sliding seat (32); The moving assembly includes a first driving device for driving the moving seat (21) to move in the vertical direction, and the first driving device also corresponds to the horizontal driving assembly; In step S4 and step S5, when the moving assembly drives the clamping assembly to move downward until the bottom edge (92) is located at the center of the vertical position of the pressure roller (31), the pair of pressure rollers (31) can move synchronously relative to each other to press the lower end of the sheet (9) through the transmission of the transmission connecting rod (33) and the sliding seat (32).

2. A double-sided laminating method for sheet material according to claim 1, characterized in that: The adhesive layer is a hot-melt adhesive material, and the pressing roller (31) is a hot pressing roller.

3. A double-sided laminating method for sheet material according to claim 1, characterized in that: The opening width of the insertion slit (141) is between b+4a and b+10a, where a is the thickness of the flat film material (8) and b is the thickness of the plate material (9).

4. A double-sided laminating method for sheet material according to claim 1, characterized in that: The groove portion (81) is arranged at the center of the flat film material (8), and the extension plate (91) is located at the center of the edge of the plate material (9).

5. The double-sided laminating method of a sheet material according to claim 1, characterized in that: A pressing wheel (151) is provided on the flat plate (14), and the pressing wheel (151) is pressed against the upper end of the flat film material (8). The rotation direction of the pressing wheel (151) corresponds to the movement direction of the flat film material (8) on the flat plate (14).

6. A double-sided laminating method for sheet material according to claim 1, characterized in that: The thickness of the flat film material (8) is greater than 0.2 mm.

7. The double-sided laminating method of a sheet material according to claim 1, characterized in that: In step S2, the groove portion (81) is adapted to the proximal cross-section of the extension plate (91), and the groove portion (81) is formed by laser cutting.

8. The double-sided laminating method of a sheet material according to claim 1, characterized in that: A rubber anti-skid pad is attached to the upper surface of the flat plate (14), and the thickness of the rubber anti-skid pad is less than 1 mm.

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