An automatic film pasting device

Abstract

The utility model discloses an automatic film pasting device, which comprises a rack, a film pasting station arranged on the rack, a roll stock feeding mechanism fixed on the rack through an adjustable damper, a material guiding mechanism arranged on one side of the roll stock feeding mechanism and rotatably connected with the rack, a material fixing mechanism arranged on one side of the material guiding mechanism and used for clamping and fixing the film passing through the material guiding mechanism, a material discharging mechanism arranged on one side of the material fixing mechanism and used for reciprocating relative to the material fixing mechanism, clamping the film and moving the film away from the material fixing mechanism, a cutter cutting mechanism arranged between the material fixing mechanism and the material discharging mechanism and used for cutting the film clamped and fixed between the material fixing mechanism and the material discharging mechanism, and a film pasting mechanism arranged on the outside of the material fixing mechanism and used for moving the cut film between the material fixing mechanism and the material discharging mechanism to the film pasting station to complete film pasting. The utility model can realize continuous and rapid film pasting for products, greatly improve production efficiency and reduce the time and labor intensity of manual operation.

Description

Technical Field

[0001] This utility model relates to the field of film application, specifically to an automatic film application device. Background Technology

[0002] The development of automated film application equipment is currently experiencing rapid growth both domestically and internationally, particularly in the automotive, consumer electronics, semiconductor, and new energy sectors. With the rapid development of the electronics industry, the demand for product film application continues to grow. Automated film application equipment can improve production efficiency and ensure product quality, offering a promising market prospect. While some similar film application equipment already exists on the market, it still has shortcomings in terms of performance, stability, and adaptability.

[0003] Currently, during the film roll stretching process, the film feeding roller is in a free-rolling state. When the film is cut, it is either not stretched taut or overstretched, resulting in wrinkles that affect subsequent lamination. Simultaneously, automatic lamination equipment often produces large lamination areas due to the varying sizes of the products being laminated. In these cases, film cutting becomes a significant challenge. Existing pneumatic film cutting methods struggle to achieve a single cut when the film is wide, and multiple cuts affect the precision of the film's edge, leading to substandard lamination. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide an automatic film application device. Combined with automatic control, the film application equipment can continuously and quickly apply film to products, greatly improving production efficiency and reducing the time and labor intensity of manual operation. Compared with traditional film application methods, the automatic film application equipment can shorten the cycle and improve the production capacity and market competitiveness of enterprises.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An automatic film applicator includes:

[0007] frame;

[0008] A film application station is set on the frame, and the film application station is equipped with several force feedback sensors;

[0009] The coil feeding mechanism is fixed to the frame via an adjustable damper;

[0010] The material guiding mechanism is arranged side by side on one side of the roll feeding mechanism and is rotatably connected to the frame;

[0011] The material fixing mechanism is located on one side of the material guiding mechanism and is fixed to the frame to clamp and fix the film passing through the material guiding mechanism;

[0012] The discharge mechanism is located on one side of the fixed material mechanism and is fixed to the frame. Its clamping end can reciprocate relative to the fixed material mechanism, clamping the film away from the fixed material mechanism.

[0013] The cutting mechanism is fixed to the frame between the material setting mechanism and the material discharging mechanism. Its reciprocating motion cuts the film that is clamped and fixed between the material setting mechanism and the material discharging mechanism.

[0014] The film application mechanism is located outside the material setting mechanism. It moves the film cut between the material setting mechanism and the material discharging mechanism to the film application station to complete the film application.

[0015] Furthermore, the roll feeding mechanism includes:

[0016] The upright plate is vertically mounted on the frame;

[0017] The feeding shaft is rotatably mounted on the vertical plate via a double bearing structure;

[0018] The adjustable damper has a fixed end that is fixed to the vertical plate and a control end that contacts the shaft of the feeding shaft to control the rotation damping of the feeding shaft.

[0019] Two material limiting units are provided, with the outer casing mounted on the feed shaft to limit the film roll of the outer casing on the feed shaft;

[0020] The adjustable variable damper includes two variable damping units, symmetrically arranged on the outer side of the feed shaft; each variable damping unit includes:

[0021] The base is located on one side of the feeding shaft and is fixedly connected to the vertical plate; the surface of the base facing the cylindrical surface of the feeding shaft is provided with a receiving groove; the bottom of the receiving groove is provided with an adjustment hole that penetrates the base;

[0022] The urethane block is placed in the receiving groove, and the cylindrical surface of the urethane block facing the feeding shaft has a curved surface that matches the cylindrical surface of the feeding shaft.

[0023] The adjusting component passes through the adjusting hole and abuts against the urethane block. Its adjustment and the position of the base change the squeezing force on the urethane block.

[0024] Furthermore, the cylindrical surface of the feeding shaft is provided with a recessed groove along its axis; a matching insert is provided in the recessed groove;

[0025] The limiting unit includes:

[0026] A collar is fitted over the feed shaft, with its inner cylindrical surface matching the cylindrical surface of the feed shaft; the collar is provided with a threaded hole pointing to its axis.

[0027] The locking screw passes through the threaded hole and abuts against the insert on the feed shaft, fixing the feed shaft and the collar relative to each other.

[0028] The top plate is fitted onto the feeding shaft and fixedly connected to the collar; the top plate has a frustum surface facing the other limiting unit; the frustum surface is collinear with the axis of the feeding shaft;

[0029] The limiting tray is placed on the top plate and located on the outer side of the frustum.

[0030] Furthermore, the material guiding mechanism includes:

[0031] The guide rollers are arranged side by side on one side of the roll feeding mechanism and are rotatably connected to the frame through a double bearing structure;

[0032] Two limiting rings, with an interference fit, are fitted onto the guide roller to limit the film on both sides as it passes through the guide roller.

[0033] Furthermore, the discharge mechanism includes:

[0034] The first reciprocating motion mechanism is mounted on the frame, and the reciprocating direction of its moving end is parallel to the direction in which the film is stretched from the roll feeding mechanism.

[0035] The discharge rack is located on the moving end of the first reciprocating motion structure;

[0036] Two discharge gripper cylinders are located on both sides of the discharge frame. The line connecting the two discharge gripper cylinders is perpendicular to and parallel to the reciprocating direction of the moving end of the first reciprocating motion structure. The grippers of the discharge gripper cylinders are directly opposite the film discharged by the material guiding mechanism.

[0037] Furthermore, the feeding mechanism includes two feeding units, respectively disposed on both sides of the film discharged by the feeding mechanism; the feeding unit includes:

[0038] The fixed material column is vertically mounted on the frame;

[0039] A material-fixing gripper cylinder is mounted on a material-fixing column, with the grippers of the material-fixing gripper cylinder directly facing the film discharged by the material guiding mechanism.

[0040] Furthermore, both the discharge gripper cylinder and the stationary gripper cylinder are equipped with clamping components on their grippers; the clamping components include:

[0041] The clamping head is fixedly connected to the clamping jaws of the clamping jaw cylinder;

[0042] The clamping plate is fixedly connected to the clamping head, and its surface is perpendicular to the film plane discharged by the material guiding mechanism; the end face of the clamping plate facing the film discharged by the material guiding mechanism is evenly provided with a number of spaced clamping teeth; the clamping teeth on the two clamping plates mounted on the two clamping claws of each discharge clamping claw cylinder and the fixed clamping claw cylinder mesh with each other.

[0043] Furthermore, the cutting mechanism includes:

[0044] The cutting frame is mounted on the machine frame and spans directly above the film being guided by the feeding mechanism;

[0045] The second reciprocating motion mechanism is set on the cutting frame, and the reciprocating direction of its motion end is perpendicular to the direction in which the film is stretched from the roll feeding mechanism;

[0046] The cutting cylinder has its fixed end mounted on the moving end of the second reciprocating motion mechanism, and its telescopic end moves in a direction perpendicular to the film plane guided by the material guiding mechanism.

[0047] The cutting blade holder is located on the telescopic end of the cutting cylinder, and a cutting blade is mounted on it, with the blade surface perpendicular to the film plane guided by the material guiding mechanism.

[0048] Furthermore, the cutting blade holder includes a base plate and a panel; the base plate is fixedly connected to the telescopic end of the cutting cylinder, the panel is fixedly connected to the base plate, and the cutting blade is disposed between the base plate and the panel;

[0049] Both the base plate and the panel have notches on the sides facing the film being guided by the material guiding mechanism, and the cutting blade is exposed at the notches on the side facing the film being guided by the material guiding mechanism; the cutting blade forms an angle of 25-35° with the plane of the film being guided by the material guiding mechanism.

[0050] The notch is located at the bottom of the side of the film being guided by the feeding mechanism, and a guiding slope is provided to guide the cut film to move outwards towards the base plate or panel.

[0051] Furthermore, the film application mechanism includes:

[0052] The third reciprocating motion mechanism is located on the frame, and the reciprocating direction of its moving end is parallel to the direction in which the film is stretched from the roll feeding mechanism.

[0053] The displacement cylinder has its fixed end set on the moving end of the third reciprocating motion mechanism, and its telescopic end moves in a direction perpendicular to the film plane guided by the material guiding mechanism.

[0054] The suction cup holder is mounted on the telescopic end of the displacement cylinder;

[0055] Several suction cup components are mounted on a suction cup frame, with their suction cup surfaces facing the upper surface of the film discharged by the material guiding mechanism.

[0056] Due to the adoption of the above technical solution, this utility model has the following advantages:

[0057] 1. A unique mechanical structure design ensures the film remains flat and stable during stretching, preventing wrinkles. Simultaneously, a special damper is installed at the film tray to ensure the film is transported smoothly without damaging the material.

[0058] 2. The entire system employs a high-precision transmission system, which can be used in conjunction with an automated control system to ensure that the end face is not damaged when cutting the film. The reciprocating speed of the second reciprocating motion mechanism is adjusted to ensure the integrity of the film. A specially made tungsten steel cutting blade is used and a specific placement angle is set to ensure that the film is cut in one cut.

[0059] 3. Combined with automated control, the film-applying equipment can continuously and quickly apply film to products, greatly improving production efficiency and reducing manual operation time and labor intensity. Compared with traditional film-applying methods, automated film-applying equipment can shorten the cycle time and improve the company's production capacity and market competitiveness.

[0060] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0061] The accompanying drawings of this utility model are described below:

[0062] Figure 1 This is a first three-dimensional structural schematic diagram of the automatic film-applying device in the embodiment.

[0063] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0064] Figure 3 for Figure 1 Enlarged structural diagram at point B.

[0065] Figure 4 for Figure 3 Enlarged structural diagram at point C.

[0066] Figure 5 This is a front view schematic diagram of the automatic film application device in the embodiment.

[0067] Figure 6 for Figure 5 Enlarged structural diagram at point D.

[0068] Figure 7 for Figure 5 Enlarged structural diagram at point E in the middle.

[0069] Figure 8 for Figure 5 Schematic diagram of the structure at the FF section.

[0070] Figure 9 for Figure 8 Enlarged structural diagram at point G in the middle.

[0071] Figure 10for Figure 8 Enlarged structural diagram at point H.

[0072] Figure 11 for Figure 8 Schematic diagram of the structure at the JJ section.

[0073] Figure 12 for Figure 8 Schematic diagram of the structure at the KK section.

[0074] Figure 13 for Figure 12 Enlarged structural diagram at point L.

[0075] Figure 14 for Figure 5 Schematic diagram of the structure at the MM section.

[0076] Figure 15 for Figure 5 Schematic diagram of the NN section structure.

[0077] Figure 16 for Figure 15 Enlarged structural diagram at point P.

[0078] Figure 17 for Figure 16 Schematic diagram of the cross-section of QQ.

[0079] Figure 18 This is a schematic diagram of the second three-dimensional structure of the automatic film-applying device in the embodiment.

[0080] Figure 19 for Figure 18 Enlarged structural diagram at point R in the middle.

[0081] In the picture:

[0082] 1. Frame; 2. Film application station; 21. Force feedback sensor; 31. Vertical plate; 32. Feed shaft; 321. Groove; 322. Insert strip; 331. Base; 3311. Receiving groove; 3312. Adjustment hole; 332. Polyurethane block; 3321. Curved surface; 333. Adjusting component; 341. Collar; 3411. Threaded hole; 3412. Locking screw; 342. Top plate; 3421. Frustum; 343. Material limiting plate; 41. Guide roller; 42. Material limiting ring; 51. Material fixing column; 52. Material fixing column. 61. Gripper cylinder; 62. First reciprocating motion mechanism; 63. Discharge rack; 74. Discharge gripper cylinder; 75. Cutting rack; 76. Second reciprocating motion mechanism; 77. Cutting cylinder; 78. Cutting blade holder; 79. Base plate; 70. Panel; 71. Notch; 72. Guide slope; 73. Cutting blade; 80. Third reciprocating motion mechanism; 81. Displacement cylinder; 82. Suction cup frame; 83. Suction cup assembly; 94. Gripping head; 95. Gripping plate; 96. Gripping teeth; 10. Film roll; 11. Film. Detailed Implementation

[0083] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0084] Example:

[0085] like Figures 1 to 19 As shown, an automatic film applicator is characterized by comprising:

[0086] Rack 1;

[0087] The film application station 2 is set on the frame 1, and the film application station 2 is equipped with several force feedback sensors 21.

[0088] The coil feeding mechanism is fixed to the frame 1 by an adjustable damper;

[0089] The material guiding mechanism is arranged side by side on one side of the roll feeding mechanism and is rotatably connected to the frame 1;

[0090] The material fixing mechanism is set on one side of the material guiding mechanism and fixed to the frame 1 to clamp and fix the film 11 passing through the material guiding mechanism;

[0091] The discharge mechanism is fixed to the frame 1 on one side of the fixed material mechanism. Its clamping end can reciprocate relative to the fixed material mechanism, clamping the film 11 away from the fixed material mechanism.

[0092] The cutting mechanism is fixed to the frame 1 between the material setting mechanism and the material discharging mechanism. The reciprocating motion cuts the film 11 that is clamped and fixed between the material setting mechanism and the material discharging mechanism.

[0093] The film application mechanism is located outside the material setting mechanism. It moves the film 11 cut between the material setting mechanism and the material discharging mechanism to the film application station 2 to complete the film application.

[0094] The force feedback sensor 21 adopts the A8FP10A linear force sensor from Japan's Sibo, which can detect pressure changes in its axial direction, that is, the pressure value when the displacement cylinder 82 of the film-applying mechanism squeezes the film 11 on the suction cup assembly 84 during the film-applying process. This allows for real-time adjustment of pressure and position during the film-applying process, preventing the film 11 from being stretched or shifted due to excessive pressure, which could ultimately lead to film-applying failure.

[0095] In this embodiment, the roll feeding mechanism includes:

[0096] The upright plate 31 is vertically mounted on the frame 1;

[0097] The feeding shaft 32 is rotatably mounted on the vertical plate 31 via a double bearing structure;

[0098] The adjustable damper has its fixed end fixed on the vertical plate 31 and its control end in contact with the shaft of the feeding shaft 32 to control the rotation damping of the feeding shaft 32.

[0099] Two material limiting units are provided, with the outer casing mounted on the feeding shaft 32 to limit the film roll 10 on the feeding shaft 32.

[0100] The adjustable variable damper includes two variable damping units, symmetrically arranged on the outside of the feed shaft 32; the variable damping unit includes:

[0101] The base 331 is located on one side of the feeding shaft 32 and is fixedly connected to the upright plate 31; the surface of the base 331 facing the cylindrical surface of the feeding shaft 32 is provided with a receiving groove 3311; the bottom of the receiving groove 3311 is provided with an adjustment hole 3312 that penetrates the base 331.

[0102] The urethane block 332 is disposed in the receiving groove 3311. The cylindrical surface of the urethane block 332 facing the feeding shaft 32 is provided with a curved surface 3321 that matches the cylindrical surface of the feeding shaft 32.

[0103] Adjusting element 333 (not shown in the figure) passes through adjusting hole 3312 and abuts against urethane block 332. Its adjustment and the position of base 331 change the squeezing force on urethane block 332.

[0104] The adjusting component 333 can be a flat-head screw, and the adjusting hole 3312 can be fitted with a matching internal thread. The adjusting component 333 rotates within the adjusting hole 3312 to change the pressure exerted by the end on the urethane block 332, thereby changing the pressure exerted by the urethane block 332 on the feeding shaft 32 and thus changing the rotational resistance of the feeding shaft 32.

[0105] In this embodiment, the cylindrical surface of the feeding shaft 32 is provided with a groove 321 that is recessed along its axis; the groove 321 is provided with a matching insert strip 322;

[0106] The limiting unit includes:

[0107] A collar 341 is sleeved on the feed shaft 32, and its inner cylindrical surface matches the cylindrical surface of the feed shaft 32; the collar 341 is provided with a threaded hole 3411 pointing to its axis;

[0108] The locking screw 3412 passes through the threaded hole 3411 and abuts against the insert 322 on the feed shaft 32, fixing the feed shaft 32 and the collar 341 relative to each other;

[0109] The top plate 342 is sleeved on the feeding shaft 32 and fixedly connected to the collar 341; the top plate 342 has a frustum 3421 on the plate surface facing another limiting unit; the frustum 3421 is collinear with the axis of the feeding shaft 32.

[0110] The limiting plate 343 is mounted on the top plate 342 and is located on the outside of the frustum surface 3421.

[0111] The insert 322 is designed so that the use of the locking screw 3412 will not damage the feed shaft 32. When the insert 322 is severely worn, the insert 322 can be replaced.

[0112] The frustum 3421 on the top plate 342 allows the film roll 10 to automatically coaxial with the feed shaft 32 under the force at both ends, ensuring the stability of the film roll 10 when it rotates.

[0113] In this embodiment, the material guiding mechanism includes:

[0114] The guide rollers 41 are arranged side by side on one side of the roll feeding mechanism and are rotatably connected to the frame 1 through a double bearing structure.

[0115] Two limiting rings 42, with an interference fit, are fitted onto the guide roller 41 to limit the film 11 on both sides as it passes through the guide roller 41.

[0116] The limiting ring 42 is made of plastic and can be embedded in the guide roller 41.

[0117] In this embodiment, the discharge mechanism includes:

[0118] The first reciprocating motion mechanism is mounted on the frame 1, and the reciprocating direction of its moving end is parallel to the direction in which the film 11 is stretched from the roll feeding mechanism.

[0119] The discharge rack 62 is located on the moving end of the first reciprocating motion structure;

[0120] Two discharge gripper cylinders 63 are arranged on both sides of the discharge frame 62. The line connecting the two discharge gripper cylinders 63 is perpendicular to the reciprocating direction of the moving end of the first reciprocating motion structure and parallel to it. The grippers of the discharge gripper cylinders 63 are directly opposite the film 11 discharged by the material guiding mechanism.

[0121] The first reciprocating motion mechanism can be a lead screw mechanism.

[0122] In this embodiment, the material setting mechanism includes two material setting units, respectively disposed on both sides of the film 11 discharged by the material guiding mechanism; the material setting unit includes:

[0123] The fixed material column 51 is vertically set on the frame 1;

[0124] A material-fixing gripper cylinder 52 is mounted on a material-fixing column 51, with the grippers of the material-fixing gripper cylinder 52 directly facing the film 11 discharged by the material guiding mechanism.

[0125] In this embodiment, both the discharge gripper cylinder 63 and the stationary gripper cylinder 52 are equipped with gripping components; the gripping components include:

[0126] The clamping head 91 is fixedly connected to the clamping jaws of the clamping jaw cylinder;

[0127] The clamping plate 92 is fixedly connected to the clamping head 91, and its surface is perpendicular to the plane of the film 11 discharged by the material guiding mechanism. The end face of the clamping plate 92 facing the film 11 discharged by the material guiding mechanism is evenly provided with a number of spaced clamping teeth 93. The clamping teeth 93 on the two clamping plates 92 mounted on the two clamping claws of each discharge claw cylinder 63 and the fixed claw cylinder 52 mesh with each other.

[0128] The clamping teeth 93 on the clamping plate 92 can effectively clamp the film 11 firmly.

[0129] In this embodiment, the cutting mechanism includes:

[0130] The cutting frame 71 is mounted on the frame 1 and spans directly above the film 11 discharged by the material guiding mechanism;

[0131] The second reciprocating motion mechanism 72 can be a lead screw mechanism, which is set on the cutting frame 71, and the reciprocating direction of its moving end is perpendicular to the direction in which the film 11 is stretched from the roll feeding mechanism.

[0132] The cutting cylinder 73 has its fixed end mounted on the moving end of the second reciprocating motion mechanism 72, and its telescopic end moves in a direction perpendicular to the plane of the film 11 guided by the material guiding mechanism.

[0133] The cutting blade holder 74 is mounted on the telescopic end of the cutting cylinder 73, and a cutting blade 75 is mounted on it, with the blade surface perpendicular to the plane of the film 11 guided by the material guiding mechanism.

[0134] After the film 11 is tightened by the feeding unit and the discharging mechanism, the film 11 can be effectively cut in one go by sliding the cutting blade 75.

[0135] In this embodiment, the cutting blade holder 74 includes a base plate 741 and a panel 742; the base plate 741 is fixedly connected to the telescopic end of the cutting cylinder 73, the panel 742 is fixedly connected to the base plate 741, and the cutting blade 75 is disposed between the base plate 741 and the panel 742.

[0136] Both the base plate 741 and the panel 742 have notches 743 on the side facing the film 11 guided by the material guiding mechanism. The cutting blade 75 is exposed at the notch 743 on the side facing the film 11 guided by the material guiding mechanism. The cutting blade 75 forms an angle of 25-35° with the plane of the film 11 guided by the material guiding mechanism.

[0137] The bottom of the notch 743 facing the side of the film 11 being guided by the material guiding mechanism has a guiding slope 7431, which guides the film 11 after cutting to move outward from the bottom plate 741 or the panel 742.

[0138] In this embodiment, the cutting blade 75 forms a 30° angle with the plane of the film 11 guided by the material guiding mechanism. This angle is the optimal angle obtained by experienced assembly workers through multiple tests. Too large or too small an angle will affect the flatness of the cut of the film 11.

[0139] In this embodiment, the film application mechanism includes:

[0140] The third reciprocating motion mechanism 81 can be a lead screw mechanism, which is set on the frame 1, and the reciprocating direction of its moving end is parallel to the direction in which the film 11 is stretched from the roll feeding mechanism.

[0141] The displacement cylinder 82 has its fixed end set on the moving end of the third reciprocating motion mechanism 81, and its telescopic end moves in a direction perpendicular to the plane of the film 11 led out by the material guiding mechanism.

[0142] The suction cup holder 83 is mounted on the telescopic end of the displacement cylinder 82;

[0143] Several suction cup assemblies 84 are mounted on the suction cup frame 83, with their suction cup surfaces facing the upper surface of the film 11 discharged by the material guiding mechanism.

[0144] There are more than 84 suction cup components, such as Figure 1 The settings shown are provided at the four corners and the center area of ​​the cut film 11 to ensure the flatness of the film 11 during the transfer and pasting process.

[0145] The automatic film-applying device in this embodiment is used as follows: First, the product to be film-applied is placed in the film-applying station 2 and fixed in place. A force feedback sensor 21 is installed in the film-applying area of ​​the product. This area is typically made of a relatively soft, deformable material.

[0146] Insert the film 11 rolls into the feed shaft 32, and then the limiting unit pushes to lock the film roll 10, ensuring that the axis of the film roll 10 is collinear with the axis of the feed shaft 32. Pull out the film 11 and pass it over the guide roller 41, and adjust the position of the limiting ring on the guide roller 41.

[0147] Until the film 11 is passed through the two positioning jaw cylinders 52 of the positioning mechanism, after the film 11 is adjusted to be flat, the positioning jaw cylinders 52 are controlled to clamp it, at which point the film 11 is tightened. The film 11 being applied is not a very soft material, and after being horizontally clamped, its end can still maintain a certain amount of protrusion.

[0148] Subsequently, the first reciprocating motion mechanism of the discharge mechanism is controlled to move, causing the discharge gripper cylinder 63 to approach the stationary gripper cylinder 52. At this time, the film 11, which is not clamped by the stationary gripper cylinder 52, passes between the two clamping plates 92 of the discharge gripper cylinder 63. Then, the first reciprocating motion mechanism is controlled to drive the discharge gripper cylinder 63 away from the stationary gripper cylinder 52. At the same time, the stationary gripper cylinder 52 is controlled to release its grip on the film 11. At this time, the film 11 is pulled to unwind from the film roll 10. The tension drives the feeding shaft 32 to rotate, and the urethane block 332 ensures that the pulled film 11 is in a suitable tension state.

[0149] When the discharge gripper cylinder 63 moves to the predetermined position, the control displacement cylinder 82 descends, causing the suction cup assembly 84 to adsorb the film 11 of the stationary gripper cylinder 52 and the discharge gripper cylinder 63 and fix it. Then, the control stationary gripper cylinder 52 clamps the film 11 again.

[0150] Control the movement of the second reciprocating motion mechanism 72 to drive the cutting blade 75 to move from one side of the film 11 to the other side to cut the film 11. After cutting, it automatically resets.

[0151] After cutting, the discharge gripper cylinder 63 releases its grip on the film 11, at which point the film 11 is controlled by the suction cup assembly 84. The displacement cylinder 82 shortens, causing the height of the film 11 to exceed that of the discharge gripper cylinder 63. Then, the third reciprocating motion mechanism 81 controls the suction cup frame 83 to move to the film application station 2, and then controls the displacement cylinder 82 to extend, so that the film 11 on the suction cup assembly 84 adheres to the surface of the product to be filmed. If the extension of the displacement cylinder 82 is too large during the film application process, it will cause excessive pressure on the surface of the product to be filmed by the suction cup assembly 84, resulting in slight deformation of the product surface. This deformation will be received by the force feedback sensor 21. The automatic control system can control the displacement cylinder 82 to shorten by a certain amount and control the extension of the displacement cylinder 82 during the next film application. That is, the pressure and position are adjusted in real time during the film application process to avoid the film 11 being overstretched or the final bonding position being misaligned.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic film applicator, characterized in that, include: frame; A film application station is set on the frame, and the film application station is equipped with several force feedback sensors; The coil feeding mechanism is fixed to the frame via an adjustable damper; The material guiding mechanism is arranged side by side on one side of the roll feeding mechanism and is rotatably connected to the frame; The material fixing mechanism is located on one side of the material guiding mechanism and is fixed to the frame to clamp and fix the film passing through the material guiding mechanism; The discharge mechanism is located on one side of the fixed material mechanism and is fixed to the frame. Its clamping end can reciprocate relative to the fixed material mechanism, clamping the film away from the fixed material mechanism. The cutting mechanism is fixed to the frame between the material setting mechanism and the material discharging mechanism. Its reciprocating motion cuts the film that is clamped and fixed between the material setting mechanism and the material discharging mechanism. The film application mechanism is located outside the material setting mechanism. It moves the film cut between the material setting mechanism and the material discharging mechanism to the film application station to complete the film application.

2. The automatic film applicator according to claim 1, characterized in that, The roll material feeding mechanism includes: The upright plate is vertically mounted on the frame; The feed shaft is rotatably mounted on the vertical plate via a double bearing structure; The adjustable damper has a fixed end that is fixed to the vertical plate and a control end that contacts the shaft of the feeding shaft to control the rotation damping of the feeding shaft. Two material limiting units are provided, with the outer casing mounted on the feed shaft to limit the film roll of the outer casing on the feed shaft; The adjustable variable damper includes two variable damping units, symmetrically arranged on the outer side of the feed shaft; each variable damping unit includes: The base is located on one side of the feeding shaft and is fixedly connected to the vertical plate; the surface of the base facing the cylindrical surface of the feeding shaft is provided with a receiving groove; the bottom of the receiving groove is provided with an adjustment hole that penetrates the base; The urethane block is placed in the receiving groove, and the cylindrical surface of the urethane block facing the feeding shaft has a curved surface that matches the cylindrical surface of the feeding shaft. The adjusting component passes through the adjusting hole and abuts against the urethane block. Its adjustment and the position of the base change the squeezing force on the urethane block.

3. The automatic film applicator according to claim 2, characterized in that, The cylindrical surface of the feeding shaft is provided with a recessed groove along its axis; a matching insert is provided in the recessed groove; The limiting unit includes: A collar is fitted over the feed shaft, with its inner cylindrical surface matching the cylindrical surface of the feed shaft; the collar is provided with a threaded hole pointing to its axis. The locking screw passes through the threaded hole and abuts against the insert on the feed shaft, fixing the feed shaft and the collar relative to each other. The top plate is fitted onto the feeding shaft and fixedly connected to the collar; the top plate has a frustum surface facing the other limiting unit; the frustum surface is collinear with the axis of the feeding shaft; The limiting tray is placed on the top plate and located on the outer side of the frustum.

4. The automatic film applicator according to claim 1, characterized in that, The material guiding mechanism includes: The guide rollers are arranged side by side on one side of the roll feeding mechanism and are rotatably connected to the frame through a double bearing structure; Two limiting rings, with an interference fit, are fitted onto the guide roller to limit the film on both sides as it passes through the guide roller.

5. The automatic film applicator according to claim 1, characterized in that, The discharge mechanism includes: The first reciprocating motion mechanism is mounted on the frame, and the reciprocating direction of its moving end is parallel to the direction in which the film is stretched from the roll feeding mechanism. The discharge rack is located on the moving end of the first reciprocating motion structure; Two discharge gripper cylinders are located on both sides of the discharge frame. The line connecting the two discharge gripper cylinders is perpendicular to and parallel to the reciprocating direction of the moving end of the first reciprocating motion structure. The grippers of the discharge gripper cylinders are directly opposite the film discharged by the material guiding mechanism.

6. The automatic film applicator according to claim 5, characterized in that, The feeding mechanism includes two feeding units, respectively disposed on both sides of the film discharged by the feeding mechanism; the feeding unit includes: The fixed material column is vertically mounted on the frame; A material-fixing gripper cylinder is mounted on a material-fixing column, with the grippers of the material-fixing gripper cylinder directly facing the film discharged by the material guiding mechanism.

7. The automatic film applicator according to claim 6, characterized in that, Both the discharge gripper cylinder and the stationary gripper cylinder are equipped with gripping components on their grippers; the gripping components include: The clamping head is fixedly connected to the clamping jaws of the clamping jaw cylinder; The clamping plate is fixedly connected to the clamping head, and its surface is perpendicular to the film plane discharged by the material guiding mechanism; the end face of the clamping plate facing the film discharged by the material guiding mechanism is evenly provided with a number of spaced clamping teeth; the clamping teeth on the two clamping plates mounted on the two clamping claws of each discharge clamping claw cylinder and the fixed clamping claw cylinder mesh with each other.

8. The automatic film applicator according to claim 1, characterized in that, The cutting mechanism includes: The cutting frame is mounted on the machine frame and spans directly above the film being guided by the feeding mechanism; The second reciprocating motion mechanism is set on the cutting frame, and the reciprocating direction of its motion end is perpendicular to the direction in which the film is stretched from the roll feeding mechanism; The cutting cylinder has its fixed end mounted on the moving end of the second reciprocating motion mechanism, and its telescopic end moves in a direction perpendicular to the film plane guided by the material guiding mechanism. The cutting blade holder is located on the telescopic end of the cutting cylinder, and a cutting blade is mounted on it, with the blade surface perpendicular to the film plane guided by the material guiding mechanism.

9. The automatic film applicator according to claim 8, characterized in that, The cutting blade holder includes a base plate and a panel; the base plate is fixedly connected to the telescopic end of the cutting cylinder, the panel is fixedly connected to the base plate, and the cutting blade is disposed between the base plate and the panel; Both the base plate and the panel have notches on the sides facing the film being guided by the material guiding mechanism, and the cutting blade is exposed at the notches on the side facing the film being guided by the material guiding mechanism; the cutting blade forms an angle of 25-35° with the plane of the film being guided by the material guiding mechanism. The notch is located at the bottom of the side of the film being guided by the feeding mechanism, and a guiding slope is provided to guide the cut film to move outwards towards the base plate or panel.

10. The automatic film applicator according to claim 1, characterized in that, The film application mechanism includes: The third reciprocating motion mechanism is located on the frame, and the reciprocating direction of its moving end is parallel to the direction in which the film is stretched from the roll feeding mechanism. The displacement cylinder has its fixed end set on the moving end of the third reciprocating motion mechanism, and its telescopic end moves in a direction perpendicular to the film plane guided by the material guiding mechanism. The suction cup holder is mounted on the telescopic end of the displacement cylinder; Several suction cup components are mounted on a suction cup frame, with their suction cup surfaces facing the upper surface of the film discharged by the material guiding mechanism.

Images