Automatic film pasting equipment

Abstract

The utility model discloses an automatic film pasting device which comprises a machine frame, a film pasting device and a film pasting device. The membrane conveying device is used for conveying a membrane to the membrane pasting station; the movable seat is movably arranged on the rack and is provided with a plurality of positioning mechanisms; the driving device is connected with the movable seat and can drive the movable seat to move to the film pasting station and enable the part corresponding to the positioning mechanism to be located below the film; and the pressing film pasting mechanism can be used for pasting the film on the upper surface of the part and cutting off the rest of the film. When films are pasted on the surfaces of the parts, the multiple parts are firstly placed on the movable seat, the parts are positioned and fixed through the positioning mechanism, and the driving device drives the parts on the movable seat to move to the position of the film pasting station and is located below the film. And then the downward pressing film pasting mechanism downwards presses the film at the film pasting station to be attached to the upper surfaces of the multiple parts and then cuts off the rest of the film, so that the multiple parts are pasted with the film at a time, the automation degree is high, and the film pasting efficiency and the film pasting quality stability are high.

Description

Technical Field

[0001] The utility model relates to automatic film sticking equipment. Background Art

[0002] At present, for some parts with high surface quality requirements, in order to avoid scratching the surface of the parts, film treatment is often performed to protect the parts during the production and processing. The general practice is to use manual film application, and the quality stability of the film application is insufficient. For this reason, automated equipment that can apply film has appeared in the relevant technology, but these automated equipment are often complicated to operate and the speed of applying film is slow. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an automatic film pasting device with stable film pasting quality and capable of pasting films on multiple parts at one time to improve efficiency.

[0004] According to an embodiment of the utility model, an automatic film pasting equipment includes: a frame, on which a film pasting station is provided; a film sheet transmission device, which is arranged on the frame and is used to transport the film sheet to the film pasting station; a movable seat, which is movably arranged on the frame, and on which a plurality of positioning mechanisms are provided, each of which is used to position and fix a part to be pasted with film; a driving device, which is connected to the movable seat and can drive the movable seat to move to the film pasting station and make the part corresponding to the positioning mechanism be located below the film sheet; a downward pressing film pasting mechanism, which is movably lifted and lowered on the frame and can fit the film sheet to the upper surfaces of a plurality of parts and cut off the remaining film sheets.

[0005] An automatic film laminating device according to an embodiment of the utility model has at least the following beneficial effects:

[0006] When it is necessary to apply film to the surface of parts, multiple parts are first placed on a movable seat, and the positioning mechanism positions and fixes the parts. The driving device drives the parts on the movable seat to move to the film applying station so that they are located below the film. Then, the downward pressing film applying mechanism presses the film at the film applying station downward to fit it on the upper surfaces of multiple parts, and then cuts off the remaining film, thereby achieving one-time film applying on multiple parts, with a high degree of automation, and high film applying efficiency and quality stability.

[0007] In some embodiments of the present invention, the film transmission device includes an unwinding mechanism and a rewinding mechanism, and a film capable of passing through the film laminating station is tensionedly connected between the unwinding mechanism and the rewinding mechanism.

[0008] In some embodiments of the utility model, the positioning mechanism is a mold cavity formed on the movable seat, the contour shape of the mold cavity matches the contour shape of the part to be film-bonded, a plurality of the mold cavities are arranged at intervals along a direction parallel to the conveying direction of the diaphragm, and the driving device includes a linear drive that drives the mold cavity to reciprocate and translate to the film-bonding station.

[0009] In some embodiments of the utility model, the downward pressure film-sticking mechanism includes a lower pressure plate, the lower pressure plate is provided with a plurality of pressure blocks corresponding one by one to the parts on the mold cavity, the lower pressure plate is movably raised and lowered with a die-cutting seat, the die-cutting seat is provided with a circle of annular cutting molds on the outer peripheral edge of each of the pressure blocks, the cutting molds are adapted to the contour shape of the parts to be film-sticked, and the die-cutting seat moves downward relative to the lower pressure plate to separate the film attached to the parts.

[0010] In some embodiments of the utility model, the die-cutting seat is lifted and lowered on the frame by a vertical guide rod, the middle part of the cutting die has a through hole for the corresponding pressure block to pass downward, and a first elastic member is provided between the lower pressure plate and the die-cutting seat to drive the pressure block to pass through the through hole, and the first elastic member is compressed to retract the pressure block into the through hole so that the cutting die can punch the membrane along the outer contour edge of the part.

[0011] In some embodiments of the present invention, the linear drive drives the lower pressing plate and the die-cutting seat to move downward through a linkage mechanism to fit the diaphragm to the upper surface of the part and separate the diaphragm from the part.

[0012] In some embodiments of the present invention, the output end of the linear drive is connected to the movable seat through a second elastic member, the frame is provided with a stop portion that abuts against the movable seat to limit the movable seat to the film laminating station, the linkage mechanism includes a rotating arm and a swing arm rotatably arranged on the frame, one end of the rotating arm is rotatably connected to a connecting rod, the end of the connecting rod away from the rotating arm is rotatably connected to one end of the swing arm, the other end of the swing arm is movably connected to the upper end of the vertical guide rod, the die-cutting seat is connected to the lower end of the vertical guide rod, the output end of the linear drive is connected to a driving member contacting the other end of the rotating arm, and at least one of the swing arm, the connecting rod and the rotating arm is connected to a third elastic member that drives its reset rotation.

[0013] In some embodiments of the utility model, the vertical guide rod, the swing arm, the connecting rod and the rotating arm form a linkage rod group, and the linkage rod group is provided with two groups, and the two swing arms, the two connecting rods, and the two rotating arms are all connected by a cross bar.

[0014] In some embodiments of the utility model, the driving member includes a sleeve portion and a baffle portion opposite to the sleeve portion, a movable gap is provided between the baffle portion and the opening of the sleeve portion, the movable seat has a limiting portion located within the movable gap, and the second elastic member is a spring member whose two ends respectively abut against the limiting portion and the sleeve portion.

[0015] In some embodiments of the utility model, a first clamping assembly and a second clamping assembly are respectively provided between the unwinding mechanism and the rewinding mechanism. In the conveying direction of the film, the first clamping assembly and the second clamping assembly respectively clamp the film located at the front end and the rear end of the film laminating station.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the automatic film laminating equipment of the utility model when the movable seat moves to one side of the film laminating station;

[0019] Figure 2 for Figure 1 A structural schematic diagram of another perspective of the embodiment;

[0020] Figure 3 for Figure 1 A schematic diagram of the internal cross section of the embodiment when the movable seat moves to the film sticking station;

[0021] Figure 4 for Figure 1 A schematic diagram of the structural decomposition of the downward pressing film sticking mechanism of the embodiment.

[0022] Reference numerals:

[0023] Frame 100; stop portion 110; unwinding mechanism 210; rewinding mechanism 220; movable seat 300; mold cavity 310; limiting portion 320; driving device 400; film pressing mechanism 500; lower pressing plate 510; pressing block 511; die-cutting seat 520; cutting die 521; through hole 522; vertical guide rod 530; first elastic member 540; linkage mechanism 600; rotating arm 610; connecting rod 620; swing arm 630; driving member 640; sleeve portion 641; baffle portion 642; cross bar 650; second elastic member 700; third elastic member 800; first clamping assembly 910; second clamping assembly 920. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figures 1 to 4An automatic film pasting device according to an embodiment of the utility model comprises: a frame 100, on which a film pasting station is provided; a film sheet transmission device, which is arranged on the frame 100 and is used to convey the film sheet to the film pasting station; a movable seat 300, which is movably arranged on the frame 100, and on which a plurality of positioning mechanisms are arranged, each of which is used to position and fix a part to be pasted with a film; a driving device 400, which is connected to the movable seat 300 and can drive the movable seat 300 to move to the film pasting station and make the part corresponding to the positioning mechanism be located below the film sheet; a downward pressing film pasting mechanism 500, which is movably lifted and lowered on the frame 100 and can fit the film sheet to the upper surfaces of a plurality of parts and cut off the remaining film sheets.

[0029] When it is necessary to apply film to the surface of parts, multiple parts are first placed on the movable seat 300, and the positioning mechanism positions and fixes the parts. The driving device 400 drives the parts on the movable seat 300 to move to the film applying station so that they are located below the film. Then, the film applying mechanism 500 presses down the film at the film applying station to fit it on the upper surfaces of multiple parts and then cuts off the remaining film, thereby achieving one-time film applying on multiple parts, with a high degree of automation, and high film applying efficiency and film applying quality stability.

[0030] See also Figure 1 In some embodiments of the present invention, the film transmission device includes an unwinding mechanism 210 and a rewinding mechanism 220, and a film that can pass through the film laminating station is tensionedly connected between the unwinding mechanism 210 and the rewinding mechanism 220. It can be understood that the unwinding mechanism 210 is used to release the film, and the rewinding mechanism 220 rewinds the remaining film after laminating, thereby realizing continuous release of the film to facilitate efficient and automatic completion of the laminating work of a large number of parts. In this embodiment, the winding mechanism 220 includes a winding motor and a winding roller connected to the output end of the winding motor, and the unwinding mechanism 210 includes an unwinding roller, which is not connected to a power source. In order to ensure the tensioning effect of the diaphragm to ensure the flatness of the film and avoid wrinkling, a rocker arm is movably arranged on the frame 100, and the middle part of the rocker arm is connected to the frame 100 by a pivot rotation. A pressure roller is arranged at one end of the rocker arm, and the pressure roller can be pressed against the coil composed of the diaphragm on the unwinding roller. A tension spring is connected between the other end of the rocker arm and the frame 100, and the tension spring can drive the pressure roller to always elastically press against the coil composed of the diaphragm on the unwinding roller, so that the tensioning effect of the diaphragm can be guaranteed without configuring a power source for the unwinding roller.

[0031] Of course, in other embodiments, the film conveying device can also be replaced by pre-cutting the film into a size that can cover the upper surface of all parts on the movable seat 300, and conveying the film piece by piece to the film sticking station.

[0032] See also Figure 1and Figure 3 In some embodiments of the utility model, the positioning mechanism is a mold cavity 310 formed on the movable seat 300, the contour shape of the mold cavity 310 matches the contour shape of the part to be filmed, and the plurality of mold cavities 310 are arranged at intervals parallel to the conveying direction of the film, and the driving device 400 includes a linear driver that drives the mold cavity 310 to reciprocate and translate to the film-pasting station. In this embodiment, the part to be filmed is a flat rectangular parallelepiped. When the part is placed in the mold cavity 310, the upper surface of the part protrudes from the opening of the mold cavity 310. When the downward pressing film-pasting mechanism 500 moves downward, the film can be attached to the upper surfaces of multiple parts, and there is a height gap between the upper surface of the part and the upper surface of the movable seat 300. The height gap provides an operating space for the separation of the film attached to the part. The positioning mechanism is the mold cavity 310, which can also simplify the structure and reduce the cost. Of course, in other embodiments, the positioning mechanism can be replaced by a clamping structure at the lower end of the outer peripheral wall of the clamping part.

[0033] After the automated film laminating equipment of the above structure places multiple parts into multiple mold cavities 310 respectively, the linear drive drives the movable seat 300 to move horizontally to the bottom of the diaphragm, so that the upper surface of the part is opposite to the lower surface of the diaphragm, and then the downward pressure film laminating mechanism 500 applies downward force to the diaphragm to fit the upper surface of the part. At the same time, the upper surface of the part is separated from the rest of the film, that is, the film between the unwinding mechanism 210 and the winding mechanism 220 forms residual material after passing through the film laminating station, and the residual material is recovered by the winding mechanism 220. After the film laminating is completed, the linear drive drives the movable seat 300 to reset to one side of the diaphragm, and workers or robots can take out the parts after the film laminating is completed, and then replace them with the parts to be film laminating, so as to realize continuous production.

[0034] See also Figure 3 and Figure 4 In some embodiments of the utility model, the film pressing mechanism 500 includes a lower pressing plate 510, the lower pressing plate 510 is provided with a plurality of pressing blocks 511 corresponding to the parts on the die cavity 310, the lower pressing plate 510 is movable and raised and provided with a die-cutting seat 520, the die-cutting seat 520 is provided with a ring-shaped cutting die 521 at the outer peripheral edge of each pressing block 511, the cutting die 521 is adapted to the contour shape of the part to be filmed, and the die-cutting seat 520 moves downward relative to the lower pressing plate 510 to separate the film attached to the part. It can be understood that when the lower pressing plate 510 moves downward, the pressing block 511 presses the film against the upper surface of the part, and then the die-cutting seat 520 moves downward relative to the lower pressing plate 510, and the plurality of cutting die dies 521 can be punched along the outer peripheral edge of the part, and the film between the unwinding mechanism 210 and the winding mechanism 220 and the film attached to the part can be separated.

[0035] See also Figure 3 and Figure 4 In some embodiments of the utility model, in order to guide the lifting and lowering movement of the die-cutting seat 520, the die-cutting seat 520 is lifted and lowered on the frame 100 through a vertical guide rod 530, and the middle part of the cutting die 521 has a through hole 522 for the corresponding pressing block 511 to pass downward, and a first elastic member 540 is provided between the lower pressing plate 510 and the die-cutting seat 520 to drive the pressing block 511 to pass through the through hole 522. The first elastic member 540 is compressed to retract the pressing block 511 into the through hole 522 and allow the cutting die 521 to punch the film along the outer contour edge of the part. It can be understood that, with the above structure, only a driving source for driving the die-cutting seat 520 to lift and lower can be configured to drive the lower pressing plate 510 to move, thereby simplifying the structure of the equipment and reducing costs.

[0036] See also Figure 4 In this embodiment, the die-cutting seat 520 includes a first rectangular flat plate fixedly connected to the lower end of the vertical guide rod 530, and a second rectangular flat plate parallel to the first rectangular flat plate and having the same shape and size is arranged directly below the first rectangular flat plate. The above-mentioned cutting knife mold 521 is arranged on the second rectangular flat plate, and the through hole 522 is arranged to penetrate the second rectangular flat plate in the vertical direction. The cutting knife mold 521 has a circle of blades on the outer peripheral edge of the through hole 522, and the blade is used to punch the diaphragm downward to separate the diaphragm attached to the upper surface of the part. Both ends of the second rectangular flat plate are formed with a vertical and horizontal shape. The side plate portion of the rectangular plate is fastened to the second rectangular plate by screws to achieve the connection between the first rectangular plate and the second rectangular plate, and an installation cavity for accommodating the lower pressure plate 510 and the first elastic member 540 is formed between the first rectangular plate and the second rectangular plate, wherein the pressure block 511 is protruded from the lower surface of the lower pressure plate, and the first elastic member 540 is a compression spring, and the two ends of the compression spring respectively abut against the upper surface of the lower pressure plate 510 and the lower surface of the first rectangular plate, and the compression spring can push the lower pressure plate 510 to abut against the upper surface of the second rectangular plate and make the pressure block 511 extend downward from the through hole 522.

[0037] See also Figure 3 and Figure 4When the downward pressure film-sticking mechanism 500 is working, the die-cutting seat 520 is stressed and slides downward along the length direction of the vertical guide rod 530, and the lower pressure plate 510 moves downward with the die-cutting seat 520. When the pressure block 511 presses the diaphragm against the upper surface of the part, multiple parts are simultaneously film-sticked, and then the die-cutting seat 520 is forced to continue to slide downward, the lower pressure plate 510 remains stationary, the first elastic member 540 is compressed, the pressure block 511 and the upper part of the part are retracted to the inside of the through hole 522, and the cutting die 521 can punch the diaphragm along the outer contour edge of the part, so that the diaphragm attached to the part is separated, and then the cutting die 521 is forced to move upward, driving the pressure block 511 upward away from the part, thereby realizing the function of film sticking and cutting the diaphragm.

[0038] It can be understood that when the first elastic member 540 is compressed to the maximum extent, the upper surface of the lower pressing plate 510 approaches the lower surface of the first rectangular flat plate, preventing the die-cutting seat 520 and the cutting die 521 from continuing to move downward.

[0039] In some embodiments, the second rectangular flat plate, the side plate portion and the cutter mold 521 are an integrated metal structure, and a circle of blades of the cutter mold 521 is in a wedge shape inclined toward the through hole 522. The lower pressing plate 510 and the plurality of pressing blocks 511 are also an integrated metal structure, which is conducive to processing the lower surfaces of the plurality of pressing blocks 511 to be located on the same plane. The shape of the lower pressing plate 510 is substantially the same as that of the first rectangular flat plate, and the four first elastic members 540 are distributed at the four corners of the lower pressing plate 510, which helps to arrange the lower pressing plate 510 horizontally.

[0040] See also Figures 1 to 3In some embodiments of the utility model, the linear actuator drives the lower pressing plate 510 and the die-cutting seat 520 to move downward through the linkage mechanism 600 to fit the diaphragm on the upper surface of the part and separate the diaphragm on the part. It can be understood that when the linear actuator pushes the multiple parts on the movable seat 300 to move to the film pasting station, the linkage mechanism 600 can quickly drive the lower pressing film pasting mechanism 500 to move, thereby helping to improve the efficiency of automatic film pasting and shorten the working hours. Moreover, it should be noted that the movable seat 300 moves to the film pasting station and leaves the film pasting station, the lower pressing plate 510 presses the pressing block 511 against the upper surface of the part to achieve film pasting, and the die-cutting seat 520 cuts the film after film pasting. These are three independent steps. In traditional automation equipment, three independent driving sources are required, which not only causes the problems of high equipment cost, complex structure, and large volume, but also causes the problem of low production efficiency due to the response of each driving source requiring a certain amount of time. The automated film laminating equipment constructed as above realizes the above three steps by utilizing the combination of the linear drive and the linkage mechanism 600, which not only reduces the cost of the equipment, simplifies the structure of the equipment, and helps to reduce the size of the equipment, but also further shortens the production and processing time and improves production efficiency.

[0041] See also Figure 2 and Figure 3 In some embodiments of the utility model, the output end of the linear actuator is connected to the movable seat 300 through a second elastic member 700, and the frame 100 is provided with a stopper 110 that abuts against the movable seat 300 to limit the movable seat 300 to the film sticking station. The linkage mechanism 600 includes a rotating arm 610 and a swing arm 630 rotatably arranged on the frame 100, one end of the rotating arm 610 is rotatably connected to a connecting rod 620, and one end of the connecting rod 620 away from the rotating arm 610 is rotatably connected to one end of the swing arm 630, and the other end of the swing arm 630 is movably connected to the upper end of the vertical guide rod 530, and the die-cutting seat 520 is connected to the lower end of the vertical guide rod 530. The output end of the linear actuator is connected to a driving member 640 that contacts the other end of the rotating arm 610, and at least one of the swing arm 630, the connecting rod 620 and the rotating arm 610 is connected to a third elastic member 800 that drives it to reset and rotate.

[0042] It should be noted that when the output end of the linear actuator drives the driving member 640 to extend, the second elastic member 700 is compressed and pushes the movable seat 300 to move in the direction of the film pasting station. When the movable seat 300 abuts against the stopper 110 on the frame 100, the movable seat 300 moves into place, and multiple parts on the movable seat 300 are located directly below the multiple pressing blocks 511 of the lower pressure plate 510, thereby ensuring the accuracy of the film pasting position. Then the output end of the first linear actuator continues to extend, and the driving member 640 continues to move forward a certain distance relative to the movable seat 300 in the extending direction of the first linear actuator and then contacts the rotating arm 610. The driving member 640 can drive the rotating arm 610 to rotate, and the end of the rotating arm 610 away from the driving member 640 swings upward to drive the swing arm 630 to rotate through the connecting rod 620, and the swing arm 630 and the vertical guide The end connected to the upper end of the rod 530 swings downward to push the vertical guide rod 530 to slide downward, thereby driving the die-cutting seat 520 to move vertically downward, and then the lower pressure plate 510 moves downward with the die-cutting seat 520. When the pressure block 511 presses the diaphragm against the upper surface of the part, multiple parts are simultaneously film-sticked. During the downward swinging of the end connected to the upper end of the swing arm 630 and the vertical guide rod 530, the die-cutting seat 520 is forced to continue to move downward, the lower pressure plate 510 remains stationary, the first elastic member 540 is compressed, the pressure block 511 and the upper part of the part are retracted into the inside of the through hole 522, and the cutting die 521 can punch the diaphragm along the outer contour edge of the part, so that the diaphragm attached to the part is separated, and then the cutting die 521 is forced to move upward, driving the pressure block 511 upward away from the part, thereby achieving the function of film sticking and cutting the diaphragm. After that, the output end of the linear drive retracts, the driving member 640 and the rotating arm 610 are separated, and the swing arm 630, the connecting rod 620 and the rotating arm 610 are reset under the action of the third elastic member 800, thereby driving the lower pressure plate 510 and the die-cutting seat 520 to reset upward together, and the movable seat 300 and the parts after the film is pasted can return to their original positions together under the drive of the first linear drive, and the parts after the film is pasted are unloaded and placed in the parts with the film to enter the next working cycle.

[0043] In some embodiments, in order to ensure that the swing arm 630, the connecting rod 620 and the rotating arm 610 can be smoothly reset, the swing arm 630, the connecting rod 620 and the rotating arm 610 are all connected to a third elastic member 800. In some embodiments, in order to prevent the problem that the swing arm 630, the connecting rod 620 and the rotating arm 610 are difficult to reset after the elastic force of the third elastic member 800 decreases, a clutch mechanism is further provided between the driving member 640 and the rotating arm 610. When the output end of the first linear actuator is retracted, the clutch mechanism can drive the rotating arm 610 and the driving member 640 to remain connected, and the driving member 640 can drive the rotating arm 610 to swing downward away from the end of the connecting rod 620, thereby resetting the swing arm 630, the connecting rod 620 and the rotating arm 610. In one implementation, the clutch mechanism is an electromagnet provided on the driving member 640 and a magnet provided on the rotating arm 610 and capable of being attracted by the electromagnet. Preferably, a travel switch is provided on the stop portion 110, and the travel switch is electrically connected to a power supply circuit for powering the electromagnet, and a delay module is configured in the power supply circuit. When the movable seat 300 contacts the travel switch, the electromagnet is energized to attract the magnet on the rotating arm 610. When the driving member 640 drives the rotating arm 610 to reset, the delay module controls the electromagnet to cut off the power, and the driving member 640 can be smoothly separated from the rotating arm 610, which is beneficial to the working stability of the above structure.

[0044] See also Figure 1 and Figure 2 In some embodiments of the present invention, the vertical guide rod 530, the swing arm 630, the connecting rod 620 and the rotating arm 610 form a linkage rod group, and the linkage rod group is provided with two groups, and the two swing arms 630, the two connecting rods 620, and the two rotating arms 610 are all connected by a cross bar 650. It can be understood that when there is only one linkage rod group, the swing arm 630, the connecting rod 620 and the rotating arm 610 are subjected to greater force and are prone to deformation, which affects the stability of the film application work. This problem can be improved by providing two groups of parallel linkage rod groups. Among them, the cross bar 650 between the middle parts of the two swing arms 630 is used to be rotatably connected to the frame 100, the cross bar 650 between the first ends of the two connecting rods 620 is used to realize the rotational connection between the swing arm 630 and the connecting rod 620, and the cross bar 650 between the second ends of the two connecting rods 620 is used to realize the rotational connection between the connecting rod 620 and the rotating arm 610, and a stable transmission structure is formed between the multiple cross bars 650 and the two groups of linkage rods. In this embodiment, the third elastic member 800 is a tension spring, one end of which is connected to the frame 100, and the other end is connected to the cross bar 650 between the swing arm 630 and the connecting rod 620, so as to have a large force arm to drive the swing arm 630 to reset.

[0045] See also Figure 3In some embodiments of the utility model, the driving member 640 includes a sleeve portion 641 and a baffle portion 642 facing the sleeve portion 641, and a movable gap is provided between the baffle portion 642 and the opening of the sleeve portion 641. The movable seat 300 has a limiting portion 320 located within the movable gap, and the second elastic member 700 is a spring member whose two ends respectively abut against the limiting portion 320 and the sleeve portion 641. It can be understood that before the movable seat 300 contacts the stopper 110, under the action of the second elastic member 700, the limiting portion 320 abuts against the baffle portion 642. When the output end of the linear actuator drives the driving member 640 to extend, the second elastic member 700 pushes the limiting portion 320 to move until the movable seat 300 abuts against the stopper 110 on the frame 100. When the driving member 640 continues to extend, the second elastic member 700 is compressed, and the limiting portion 320 gradually approaches the opening of the sleeve portion 641 and moves away from the baffle portion 642, so that the driving member 640 can move a certain distance relative to the movable seat 300 toward the direction of the rotating arm 610, thereby driving the above-mentioned rotating arm 610, the connecting rod 620, the swing arm 630 and the vertical guide rod 530 to move in sequence. The second elastic member 700 is partially accommodated in the sleeve portion 641 to prevent the second elastic member 700 from falling off. In this embodiment, the linear actuator is a cylinder, and the opening of the sleeve portion 641 is in contact with the limiting portion 320, and the baffle portion 642 is in contact with the limiting portion 320, which respectively limit the telescopic stroke of the cylinder.

[0046] See also Figure 1 In some embodiments of the utility model, a first clamping assembly 910 and a second clamping assembly 920 are respectively provided between the unwinding mechanism 210 and the rewinding mechanism 220. In the conveying direction of the film, the first clamping assembly 910 and the second clamping assembly 920 clamp the film at the front end and the rear end of the film laminating station respectively. It should be noted that if the tension of the film between the unwinding mechanism 210 and the rewinding mechanism 220 is insufficient, it is easy to cause the film attached to the upper surface of the part to wrinkle, affecting the appearance and causing dust to easily invade. This problem can be improved by providing the above first clamping assembly 910 and the second clamping assembly 920. Among them, the structures of the first clamping assembly 910 and the second clamping assembly 920 are consistent, both of which include a fixed pressure bar and a movable pressure bar that moves up and down relative to the fixed pressure bar through a cylinder. The fixed pressure bar and the movable pressure bar are both made of rubber material, which has a certain clamping and fixing effect on the diaphragm, but can avoid completely crushing the diaphragm. If the amount of movement required to press the diaphragm downward is large, while keeping the diaphragm taut, part of the diaphragm can also be pulled in the direction of the unwinding mechanism 210 to avoid excessive stretching and deformation of the diaphragm.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic film laminating device, characterized in that: include: A frame (100), wherein a film pasting station is provided on the frame (100); A film sheet transmission device, arranged on the frame (100), and used for transmitting the film sheet to the film laminating station; A movable seat (300) is movably disposed on the frame (100), and a plurality of positioning mechanisms are disposed on the movable seat (300), each of the positioning mechanisms being used to position and fix a part to be coated; A driving device (400) connected to the movable seat (300) and capable of driving the movable seat (300) to move to the film sticking station and causing the parts corresponding to the positioning mechanism to be located below the film; The downward pressing film sticking mechanism (500) is movably lifted and lowered on the frame (100), and can stick the film sheets on the upper surfaces of multiple parts and cut off the remaining film sheets.

2. The automatic film laminating equipment according to claim 1, characterized in that: The film sheet transmission device comprises an unwinding mechanism (210) and a rewinding mechanism (220), and a film sheet capable of passing through the film laminating station is tensionedly connected between the unwinding mechanism (210) and the rewinding mechanism (220).

3. The automatic film laminating equipment according to claim 2, characterized in that: The positioning mechanism is a mold cavity (310) formed on the movable seat (300), the contour shape of the mold cavity (310) matches the contour shape of the part to be film-bonded, a plurality of the mold cavities (310) are arranged at intervals along a direction parallel to the conveying direction of the film sheet, and the driving device (400) includes a linear drive that drives the mold cavity (310) to reciprocate and translate to the film-bonding station.

4. The automatic film laminating equipment according to claim 3, characterized in that: The downward pressure film pasting mechanism (500) comprises a downward pressure plate (510), wherein the downward pressure plate (510) is provided with a plurality of pressure blocks (511) corresponding one to one with the parts on the mold cavity (310), and the downward pressure plate (510) is provided with a die-cutting seat (520) which can be movably lifted and lowered, and the die-cutting seat (520) is provided with a ring-shaped cutting die (521) on the outer peripheral edge of each of the pressure blocks (511), and the cutting die (521) is adapted to the contour shape of the part to be pasted with film, and the die-cutting seat (520) moves downward relative to the downward pressure plate (510) to separate the film attached to the part.

5. The automatic film laminating equipment according to claim 4, characterized in that: The die-cutting seat (520) is lifted and lowered on the frame (100) by a vertical guide rod (530); the middle part of the cutting die (521) has a through hole (522) for the corresponding pressing block (511) to pass downward; a first elastic member (540) is provided between the lower pressing plate (510) and the die-cutting seat (520) to drive the pressing block (511) to pass through the through hole (522); the first elastic member (540) is compressed to retract the pressing block (511) into the through hole (522) so that the cutting die (521) punches the membrane along the outer contour edge of the part.

6. The automatic film laminating equipment according to claim 5, characterized in that: The linear drive drives the lower pressing plate (510) and the die-cutting seat (520) to move downwards through a linkage mechanism (600) to fit the diaphragm onto the upper surface of the part and to separate the diaphragm from the part.

7. The automatic film laminating equipment according to claim 6, characterized in that: The output end of the linear drive is connected to the movable seat (300) via a second elastic member (700); a stopper (110) is provided on the frame (100) and abuts against the movable seat (300) to limit the movable seat (300) to the film laminating station; the linkage mechanism (600) comprises a rotating arm (610) and a swing arm (630) rotatably arranged on the frame (100); one end of the rotating arm (610) is rotatably connected to a connecting rod (620), and the connecting rod (620) is away from the rotating arm (630). One end of the linear actuator is rotatably connected to one end of the swing arm (630), the other end of the swing arm (630) is movably connected to the upper end of the vertical guide rod (530), the die-cutting seat (520) is connected to the lower end of the vertical guide rod (530), the output end of the linear actuator is connected to a driving member (640) contacting the other end of the rotating arm (610), and at least one of the swing arm (630), the connecting rod (620) and the rotating arm (610) is connected to a third elastic member (800) for driving the swing arm (630), the connecting rod (620) and the rotating arm (610) to return to rotation.

8. The automatic film laminating equipment according to claim 7, characterized in that: The vertical guide rod (530), the swing arm (630), the connecting rod (620) and the rotating arm (610) form a linkage rod group, and the linkage rod group is provided with two groups. The two swing arms (630), the two connecting rods (620) and the two rotating arms (610) are all connected by a cross bar (650).

9. The automatic film laminating equipment according to claim 7, characterized in that: The driving member (640) includes a sleeve portion (641) and a baffle portion (642) facing the sleeve portion (641); a movable gap is provided between the baffle portion (642) and the opening of the sleeve portion (641); the movable seat (300) has a limiting portion (320) located within the movable gap; and the second elastic member (700) is a spring member with two ends respectively abutting against the limiting portion (320) and the sleeve portion (641).

10. The automatic film laminating equipment according to claim 2, characterized in that: A first clamping assembly (910) and a second clamping assembly (920) are respectively provided between the unwinding mechanism (210) and the rewinding mechanism (220); in the conveying direction of the film, the first clamping assembly (910) and the second clamping assembly (920) respectively clamp the film located at the front end and the rear end of the film laminating station.

Images