Automatic film pasting equipment and film pasting device thereof

Abstract

The invention discloses automatic film pasting equipment and a film pasting device thereof.The automatic film pasting equipment comprises a first film pasting mechanism used for pasting a protective film to the arc face of a product, and the first film pasting mechanism comprises a first film pressing unit and a first driving unit used for driving the first film pressing unit to press the protective film to the arc face of the product; the first film pressing unit comprises a floating pressing and holding part arranged corresponding to the top of the arc surface, a fixed pressing and holding part arranged on the side edge of the floating pressing and holding part, and a soft pressing and holding part which is arranged at one end, facing a product, of the floating pressing and holding part and has preset elasticity; in a natural state, the end face, facing the product, of the floating pressing and holding part exceeds the same end face of the fixed pressing and holding part. In the film pasting state, the floating pressing and holding part is pressed and held at the top of the product through the soft body pressing and holding part, and under the abutting acting force of the product, the floating pressing and holding part floats in the direction away from the product so as to give way to the soft body pressing and holding part.

Description

Technical Field

[0001] The present invention relates to the technical field of product film pasting, and in particular to an automatic film pasting device and a film pasting apparatus thereof. Background Art

[0002] Throughout the product's life cycle, from the processing to storage, handling, and transportation after leaving the factory, there are risks of bruises, crushing, scratches, etc. These damages will not only cause the product to be scrapped, but also affect the appearance and quality of the product, and thus affect customer satisfaction. In order to prevent such a situation from occurring, a protective film needs to be pasted on the surface of the product to protect the product's appearance. The manual film pasting method has the disadvantages of slow pasting speed, uneven pasting force, and bubbles after pasting, which seriously affect the film pasting speed and quality, and it is difficult to meet the actual large-scale production needs. Especially for products with curved surfaces, the difficulty of film pasting is further aggravated. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an automatic film sticking equipment and a film sticking device thereof which can closely stick a protective film to the arc surface of a product.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: providing a film sticking device, comprising:

[0005] The first film-sticking mechanism is used to stick the protective film to the arc surface of the product. The first film-sticking mechanism includes a first film pressing unit and a first driving unit used to drive the first film pressing unit to press the protective film to the arc surface of the product; the first film pressing unit includes:

[0006] A floating holding portion, which is configured to correspond to the top of the arc surface, is used to adapt to the shape change of the product surface and provide a floating holding capability;

[0007] A fixed pressing portion, which is configured to be disposed on a side of the floating pressing portion to enhance the pressing stability; and

[0008] The soft pressing part is configured to be arranged on one end of the floating pressing part facing the product and has elastic properties, and can form adaptive deformation during the pressing process to ensure that the protective film is tightly attached to the arc surface.

[0009] Furthermore, the arc surface has a top surface and two arc-shaped side surfaces connected to the top surface on both sides in the lateral direction;

[0010] The lateral width of the floating pressing portion is adapted to the lateral width of the top surface to ensure that the protective film is stably attached to the arc surface;

[0011] The fixed pressing part includes two fixed pressing blocks arranged on both sides of the floating pressing part in the lateral direction, and used to provide lateral support for the floating pressing part during the film laminating process;

[0012] The lateral width of the soft pressing portion is greater than the lateral width of the floating pressing block.

[0013] Furthermore, the floating pressing portion and the fixed pressing portion are both connected to the output shaft of the first driving unit through a first mounting seat; the floating pressing portion includes a floating pressing block and a first floating assembly structure for floatingly assembling the floating pressing block on the first mounting seat along the axial direction of the output shaft;

[0014] The first floating assembly structure includes a first floating spring arranged between the first mounting seat and the floating pressure block and a first guide assembly arranged along the axial direction of the output shaft, and the first guide assembly is used to guide the floating pressure block.

[0015] Furthermore, two opposite sides of the two fixed pressure blocks are provided with limiting parts for limiting the floating pressure block from being separated from the first mounting seat; and the floating pressure block is provided with a matching part corresponding to each limiting part at a position thereof.

[0016] Furthermore, the product also has a bottom surface connected to one of the arc-shaped side surfaces and arranged opposite to the top surface; the film sticking device also includes:

[0017] The second film sticking mechanism is arranged on the outside of one of the curved side surfaces, and is used to squeeze the protective film from one of the curved side surfaces toward the other curved side surface, so as to stick the protective film to the bottom surface or to the area where one of the curved side surfaces intersects with the bottom surface.

[0018] Furthermore, the second film laminating mechanism includes a second film pressing unit and a second driving unit for driving the second film pressing unit to move from one of the curved side surfaces toward the other curved side surface; the second film pressing unit includes a floating pressing roller assembly floatingly arranged along the vertical direction between the top surface and the bottom surface, and the axis of the floating pressing roller assembly is perpendicular to the vertical line and lower than the midpoint of the vertical line.

[0019] Furthermore, the floating pressure roller assembly is connected to the output shaft of the second driving unit through a second mounting seat; the floating pressure roller assembly includes a pressure roller and a second floating assembly structure for floatingly mounting the pressure roller on the second mounting seat; the second floating assembly structure includes mounting blocks and limit blocks spaced along a vertical direction on a side of the second mounting seat facing the product, a pressure roller seat movably arranged between the mounting block and the limit block, a second floating spring arranged between the pressure roller seat and the mounting block, and a second guide assembly arranged along the direction of the vertical line, wherein the second guide assembly is used to guide the pressure roller seat; the pressure roller is mounted on the pressure roller seat along a direction parallel to the bottom surface, and the axis of the pressure roller is lower than the midpoint of the vertical line.

[0020] In order to solve the above technical problems, another technical solution adopted by the present invention is: providing an automatic film sticking device, comprising:

[0021] A product fixture configured to secure a product;

[0022] A film feeding device, which is configured to feed the protective film to a material taking position;

[0023] A film transfer device configured to transfer the protective film at the material extraction position to the product; and

[0024] The film sticking device is configured as the film sticking device described above, and is used to stick the protective film to the surface of the product.

[0025] Furthermore, the membrane transport device comprises:

[0026] A protective film adsorption mechanism, which is configured to adsorb the protective film at the material extraction position and to release the product film at the product position; and

[0027] The transfer mechanism is used to drive the protective film adsorption mechanism to move back and forth between the material extraction position and the product.

[0028] Furthermore, it also includes a visual positioning device, which is configured to be set in the transfer path of the transfer mechanism and is used to visually position the protective film; the film transfer device is also used to transfer the protective film to the visual positioning device for visual positioning during the process of transferring the product to the product.

[0029] The automatic film pasting equipment and the film pasting device of the present invention have the following beneficial effects: (1) by controlling the linkage action of each device through the control module, a fully automated product film pasting process from loading to unloading is realized, the production efficiency and product efficiency are improved, and the hands of the operator are freed; (2) for arc surface film pasting that is difficult to adhere, a floating pressing part is configured, a soft pressing part is configured at one end of the floating pressing part facing the product, and a fixed pressing part is configured on the outer side of the floating pressing part. By utilizing the position, ingenious movement relationship and self-deformation characteristics between them, the arc surface of the product is well adapted during the film pasting process, so that the protective film is densely adhered to the arc surface of the product, and the demand for efficient and bubble-free film pasting is realized; (3) for the bottom surface that the first film pasting device cannot adhere to or the part where the bottom surface intersects with the arc side surface, the second film pasting device is utilized to adhere it, so that the entire protective film can be effectively and densely adhered to each film pasting surface of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 It is a schematic structural diagram of a product in one embodiment of the present invention.

[0032] Figure 2 It is a schematic diagram of the structure in which a protective film is attached to a product in one embodiment of the present invention.

[0033] Figure 3 yes Figure 2 Schematic diagram of the structure from another perspective.

[0034] Figure 4 It is a schematic diagram of the structure of a protective film corresponding to a product in one embodiment of the present invention.

[0035] Figure 5 It is a structural schematic diagram of an embodiment of the automatic film sticking equipment of the present invention.

[0036] Figure 6 It is an assembly diagram of a product fixture, a second film pasting mechanism and a moving device in one embodiment of the automatic film pasting equipment of the present invention.

[0037] Figure 7 It is a schematic diagram of the structure of a product fixture in one embodiment of the automatic film pasting equipment of the present invention.

[0038] Figure 8 It is a schematic structural diagram of a film sheet transfer device in one embodiment of the automatic film sticking equipment of the present invention.

[0039] Fig. 9 yes Figure 8Schematic diagram of the assembly of the middle protective film adsorption mechanism and the first film sticking mechanism.

[0040] Fig.10 It is a schematic structural diagram of the first film pressing unit in a natural state in one embodiment of the automatic film laminating equipment of the present invention.

[0041] Fig.11 It is a structural schematic diagram of the first film pressing unit in a film pressing state in one embodiment of the automatic film laminating equipment of the present invention.

[0042] Fig.12 yes Fig.11 A schematic diagram of the structure behind which one of the fixed pressing blocks is hidden.

[0043] Fig.13 It is a structural schematic diagram of the second film sticking mechanism in one embodiment of the automatic film sticking equipment of the present invention.

[0044] Fig.14 yes Fig.13 Sectional view of AA.

[0045] The accompanying drawings in the specification are numeraled as follows:

[0046] Product A; first part A10; hole position A11; second part A20; top surface A21; bottom surface A22; first arc-shaped side surface A23; second arc-shaped side surface A24;

[0047] Protective film B; first attaching portion B10; second attaching portion B20; third attaching portion B30; fourth attaching portion B40;

[0048] Product fixture 110; base 111; side seat 112; positioning column 113; closed ring groove 114; adsorption seat 115; adsorption ring groove 1151; longitudinal adsorption groove 1152; transverse adsorption groove 1153; moving device 120;

[0049] Diaphragm feeding device 200; material taking position 210;

[0050] Film transfer device 300; transfer mechanism 310; X-axis group 311; Y-axis group 312; Z-axis group 313; protective film adsorption mechanism 320; third mounting seat 321; third driving unit 322; adsorption assembly 323; mounting shaft 3231; angle detection part 3232; suction cup 3233; detected part 3234; first slide rail 3235; connecting part 3236; buffer spring 3237;

[0051] Workbench 501; control box 502;

[0052] The first film laminating mechanism 600; the first film laminating unit 610; the floating pressing portion 611; the floating pressing block 6111; the first floating spring 6112; the first guide assembly 6113; the sliding sleeve 6113a; the guide column 6113b; the fixed pressing portion 612; the fixed pressing block 612a; the soft pressing portion 613; the first mounting seat 614; the groove 615; the limiting portion 616; the matching portion 617; the first driving unit 620;

[0053] The second film laminating mechanism 700; the second film pressing unit 710; the pressure roller 711; the mounting block 712; the limiting block 713; the pressure roller seat 714; the floating seat 714a; the sliding seat 714b; the pressure roller assembly seat 714c; the mounting groove 7141; the second floating spring 715; the second guide assembly 716; the second slide rail 716a; the second driving unit 720; and the second mounting seat 730. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0055] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0057] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 1 It is a schematic structural diagram of a product in one embodiment of the present invention. Figure 2 It is a schematic diagram of the structure in which a protective film is attached to a product in one embodiment of the present invention.

[0058] Figure 3 yes Figure 2 Schematic diagram of the structure from another perspective. Figure 4It is a schematic diagram of the structure of a protective film corresponding to a product in one embodiment of the present invention. Figure 5 Schematic diagram of the structure of an automatic film sticking device of the present invention. Figures 1 to 4 Product structure and protective film structure in Figure 5 The automatic film sticking device in the present invention is exemplified to illustrate the automatic film sticking device and the film sticking device thereof, so as to more clearly show the various components and matching relationships of the automatic film sticking device and the film sticking device thereof. It should be understood that although the following will Figure 1 , Figure 2 , Figure 3 The product and protective film structure shown are used as examples to describe the automatic film pasting equipment and the film pasting device thereof in detail, but this example is not used to limit the scope of the automatic film pasting equipment and the film pasting device thereof of the present invention. Except for the components that solve the necessary technical problems of the present invention (the film pasting device described below), the remaining components can be regarded as non-essential technical elements, which can be replaced by other technical elements with the same or similar functions or structures in other embodiments, or, these non-essential technical elements may not be needed in other embodiments.

[0059] See also Figure 1 The product A is L-shaped, and has a first part A10 with a larger surface area and a second part A20 disposed on one side of the first part A10 and bent therewith. The first part A10 is provided with a plurality of holes A11, and the cross section of the second part A20 is elliptical. The second part A20 has a top surface A21 and a bottom surface A22 which are disposed opposite to each other and perpendicular to the first part A10, and the lateral sides of the top surface A21 and the bottom surface A22 are connected by an arc-shaped side surface. Hereinafter, an arc-shaped side surface of the second part A20 close to the first part A10 is referred to as the first arc-shaped side surface A23, and an arc-shaped side surface away from the first part A10 is referred to as the second arc-shaped side surface A24. The top surface A21, the first arc-shaped side surface A23 and the second arc-shaped side surface A24 form an arc surface.

[0060] See also Figure 2 , Figure 3 and Figure 4The protective film B has a first attaching portion B10 attached to the top surface A21, a second attaching portion B20 formed on one lateral side of the first attaching portion B10, a third attaching portion B30 formed on the other lateral side of the first attaching portion B10, and a fourth attaching portion B40 connected to the third attaching portion B30 and away from the first attaching portion B10. The first attaching portion B10 is used to attach to the top surface A21, the second attaching portion B20 and the third attaching portion B30 are attached to the first arc-shaped side surface A23 and the second arc-shaped side surface A24 respectively, and the fourth attaching portion B40 is used to attach to at least a portion of the bottom surface A22. Among them, the third attachment part B30 is configured as two, and the two third attachment parts B30 are spaced apart and distributed at both end sides of the first attachment part B10 along the length direction of the first attachment part B10, and the fourth attachment part B40 is bent downward and toward the second attachment part B20 by one end of the two third attachment parts B30 away from the first attachment part B10. Those skilled in the art will understand that the specific forms of the product A and the protective film B described above are not used to limit the protection scope of the automatic film sticking equipment and the film sticking device of the present invention. In different embodiments, the product A and the protective film B may also have other morphological changes. For example, the arc surface of the product A is not limited to the top surface A21 and the two arc-shaped side surfaces described above. In some embodiments, it can also be a single arc surface.

[0061] See also Figure 5 The automatic film pasting equipment includes a product fixture 110, a moving device 120 for driving the product fixture 110 to reciprocate between the product loading position and the film pasting position, a film feeding device 200 for feeding the film to the material taking position 210, a film transfer device 300 for transferring the protective film B at the material taking position 210 to the product A, a film positioning device 400 for positioning the protective film B during the film transfer device 300 transferring the film to the product A, and a film pasting device C for attaching the protective film B to the product A. The automatic film pasting equipment may also include a workbench 501 for carrying and assembling the above-mentioned components, the workbench 501 is covered with a protective cover (not shown in the figure), a control box 502 is arranged below the workbench 501, and a control module (not shown in the figure) for controlling the above-mentioned components to perform corresponding actions at corresponding nodes is arranged in the control box 502.

[0062] In this embodiment, in order to make each component more compactly installed on the workbench 501, occupy a smaller space, and save manufacturing costs, the film sticking position is set in the middle of the workbench 501, and the loading position, the moving device 120, the film feeding device 200, the film transfer device 300, the film sticking device C and other parts are arranged around the film sticking position. For example, the straight path between the loading position and the film sticking position is defined as the Y axis, and the moving device 120 is set along the Y axis on one side of the film sticking position (the front side as shown in the figure). For example, the film feeding device 200 is set on the other side of the film sticking position (the right side as shown in the figure), and the straight path between the film feeding device 200 and the film sticking position is defined as the X axis. For example, the film transfer device 300 is configured to be set above the workbench 501, and can move along the X axis, the Y axis and the Z axis. For another example, the film sticking device C is set above the film sticking position.

[0063] The moving device 120 can be configured as a linear motion module, which can be a linear slide, a motor combined with a screw rod structure, or a rodless cylinder. The end of the linear motion module close to the film pasting device C is configured as the film pasting position, and the end of the linear motion module away from the film pasting device C is configured as the loading position.

[0064] The product jig 110 is arranged on the linear motion module. When the product jig 110 moves to the loading position, the product can be loaded to the product jig 110 manually or by a robot. When the product jig 110 moves to the film pasting position with the product A or moves to the film pasting position, a corresponding signal is generated to the control module. The control module sequentially controls the film transfer device 300 to transfer the protective film B at the material taking position 210 to the product A at the film pasting position, and controls the film pasting device C to attach the protective film B to the product A. When the film pasting is completed, the control module controls the linear motion module to transfer the product jig 110 to the loading position for manual or robot material taking. Thus, a film pasting operation is completed.

[0065] See also Figure 6 and Figure 7 For the structure of product A shown above, the product fixture 110 includes a fixture table and a fixing structure disposed on the fixture table for fixing product A. The fixture table is mounted on a bottom plate, and the bottom plate is connected to the moving device 120. For example, the bottom plate is connected to the screw nut and the slider of the guide rail. The fixture table has a base 111 and a side seat 112 standing on one side of the base 111. At least two positioning columns 113 are disposed on the side seat 112. The at least two positioning columns 113 are used to position at least two hole positions A11 on the first part A10 of the product A.

[0066] The fixed structure can be configured as an adsorption structure for adsorbing product A on the side seat 112, which has a closed annular groove 114 arranged at the side vertical surface of the side seat 112 facing the base 111, an adsorption seat 115 formed in the area enclosed by the closed annular groove 114, and an adsorption channel (not shown) arranged on the side seat 112, one end of the adsorption channel passes through the surface (adsorption surface) of the adsorption seat 115, and the other end of the adsorption channel passes through at least one side of the side seat 112 to connect to the adsorption gas source through an adsorption joint. The adsorption surface of the adsorption seat 115 is provided with adsorption annular grooves 1151 distributed along its edge, and a plurality of longitudinal adsorption grooves 1152 and transverse adsorption grooves 1153 distributed in a crisscross pattern are provided in the area enclosed by the adsorption annular grooves 1151, and the longitudinal adsorption grooves 1152, the transverse adsorption grooves 1153 and the adsorption annular grooves 1151 are all connected to each other, and they are all connected to the vacuum adsorption channel. In this way, the adsorption gas source can be evenly distributed on the adsorbed surface of product A through the longitudinal adsorption groove 1152, the transverse adsorption groove 1153 and the adsorption ring groove 1151, so as to transport, guide and gather the adsorption gas source, prevent the adsorption gas source from running around, increase the adsorption strength and enable each area of ​​product A to be evenly adsorbed, thereby improving the adsorption stability and firmness; in addition, the adsorption surface of the adsorption seat 115 protrudes from each adsorption groove, so that it can fit tightly with the adsorbed surface of product A; in addition, the edge portion of the adsorption surface surrounding the outer periphery of the adsorption ring groove 1151 forms a convex rib protruding from the ring groove, which can prevent the adsorption gas source from flowing outward; finally, the closed ring groove 114 distributed on the outer periphery of the adsorption seat 115 can further prevent the gas source from flowing outward.

[0067] When fixing the product A on the positioning fixture, the first part A10 of the product A is erected on the side surface of the side seat 112, so that the end of the first part A10 of the product A away from the second part A20 is abutted against the base 111, the hole A11 of the first part A10 is matched with the positioning column 113, and the adsorption gas source adsorbs the first part A10 on the side surface of the side seat 112. At this time, the second part A20 of the product A is located on the side seat 112, and the top surface A21 of the second part A20 faces upward and the bottom surface A22 faces downward.

[0068] The film feeding device 200 can be configured as a stripping feeder, which is used to load the protective film roll and transport the protective film roll to the material taking position 210 along the X-axis direction. The stripping feeder can adopt a well-known structure, which will not be described here one by one. The film positioning device 400 can be configured as a visual positioning device, which is arranged at a position between the film feeding device 200 and the film sticking device C. In this embodiment, the visual positioning device is arranged on the workbench 501 and is closer to the material taking position 210 of the film feeding device 200.

[0069] The film transfer device 300 is used to transfer the protective film B at the material taking position 210 to the product A at the film pasting position. The film transfer device 300 includes a transfer mechanism 310 and a protective film adsorption mechanism 320. The transfer mechanism 310 transfers the protective film adsorption mechanism 320 to the corresponding position based on the corresponding transfer instruction. The protective film adsorption mechanism 320 is used to adsorb the protective film B based on the adsorption instruction, and is also used to release the protective film B based on the release instruction. In this embodiment, the transfer mechanism 310 is used to drive the protective film adsorption mechanism 320 to move back and forth between the material taking position 210 and the product A; and is also used to transfer the protective film adsorption mechanism 320 to the visual positioning device to position the protective film B during the process of transferring the transfer mechanism 310 to the product A. The protective film adsorption mechanism 320 is used to adsorb the protective film B at the material taking position 210 based on the adsorption instruction when at the material taking position 210, and release the protective film B at the film pasting surface of the product A at the film pasting position.

[0070] See also Figure 8 and Fig. 9 The transfer mechanism 310 may be, but is not limited to, a three-axis moving module, which includes an X-axis group 311 mounted above the workbench 501 and arranged on the workbench 501 along the X-axis direction, a Y-axis group 312 perpendicular to the X-axis group 311, and a Z-axis group 313 arranged on the X-axis group 311 or the Y-axis group 312. When the Y-axis group 312 is slidably arranged on the X-axis group 311, the Z-axis group 313 is slidably arranged on the Y-axis group 312, and when the X-axis group 311 is slidably arranged on the Y-axis group 312, the Z-axis group 313 is slidably arranged on the X-axis group 311.

[0071] The protective film adsorption mechanism 320 is connected to the Z-axis group 313 through a third mounting seat 321, and the protective film adsorption mechanism 320 can also move along the Z-axis direction and rotate in the horizontal direction. Specifically, the protective film adsorption mechanism 320 includes a third driving unit 322 arranged on the third mounting seat 321 along the Z-axis direction with an output shaft facing downward, and an adsorption component 323 connected to the output shaft of the third driving unit 322. The output shaft of the third driving unit 322 can move in the vertical direction and rotate in the horizontal direction (for example, rotate 180 degrees back and forth).

[0072] The adsorption assembly 323 includes a mounting shaft 3231 connected to the output shaft of the third driving unit 322, an angle detection portion 3232 disposed on the third mounting seat 321 and located on opposite sides of the mounting shaft 3231 for detecting the rotation angle of the mounting shaft 3231, and a suction cup 3233 connected to the mounting shaft 3231, wherein the adsorption surface of the suction cup 3233 conforms to the protective film B. A detected portion 3234 for cooperating with the angle detection portion 3232 is disposed on the mounting shaft 3231, and when the detected portion 3234 rotates to the position of the angle detection portion 3232 along with the mounting shaft 3231, the third driving unit 322 can stop rotating based on the detected detection signal. The rotation function of the mounting axis 3231 is based on the fact that the setting orientation of the product A at the film sticking position and the angle of the protective film B at the material picking position 210 are exactly perpendicular to each other. Therefore, when the protective film adsorption mechanism 320 picks up the material, it needs to rotate 180 degrees to make the orientation of the suction cup 3233 consistent with the orientation of the protective film B so as to accurately adsorb the protective film B at the material picking position 210; when the protective film adsorption mechanism 320 releases the protective film B at the film sticking position, it needs to rotate 180 degrees to make the orientation of the suction cup 3233 consistent with the orientation of the product A so as to accurately place the protective film B on the film sticking surface of the product A.

[0073] Preferably, a buffer unit is further provided between the suction cup 3233 and the mounting shaft 3231, and the buffer unit is used to allow the suction cup 3233 to have space for upward buffering when the suction cup 3233 absorbs and releases the protective film B, thereby effectively protecting the protective film B. The buffer unit includes two first slide rails 3235 provided on opposite sides of the mounting shaft 3231, two connecting parts 3236 respectively connected to the sliders of the two first slide rails 3235, and a buffer spring 3237, the lower ends of the two connecting parts 3236 are connected to the suction cup 3233, and the buffer spring 3237 is provided between the suction cup 3233 and the mounting shaft 3231.

[0074] Please continue to see Figure 6 and Fig. 9, the film sticking device C includes a first film sticking mechanism 600 and a second film sticking mechanism 700. The first film sticking mechanism 600 is used to attach the protective film B to the arc surface. Based on the product A and the protective film structure described above, the first film sticking mechanism 600 is used to attach the first attachment part B10, the second attachment part B20 and the third attachment part B30 to the top surface A21, the first arc-shaped side surface A23 and the second arc-shaped side surface A24 of the product A respectively. The second film sticking mechanism 700 is used to squeeze the fourth attachment part B40 of the protective film B from the second arc-shaped side surface A24 toward the direction of the first arc-shaped side surface and downward to make the fourth attachment part B40 of the protective film B attached to the part where the bottom surface A22 of the product A intersects with the second arc-shaped side surface A24. That is, the fourth attachment part B40 is attached to at least a partial area of ​​the bottom surface A22.

[0075] Those skilled in the art can understand that, in different embodiments, the fourth attaching portion B40 can also be configured to match the shape of the bottom surface A22 to cover the entire bottom surface A22, so that the second film attaching mechanism 700 can be configured to attach the fourth attaching portion B40 to all positions of the bottom surface A22. Those skilled in the art can also understand that, in different embodiments, the film attaching device C can only be used to attach the protective film B to the arc surface, and the arc surface is not limited to the arc surface with the top surface A21 and two arc-shaped side surfaces in this article.

[0076] The first film-laminating mechanism 600 includes a first film-laminating unit 610 and a first driving unit 620 for driving the first film-laminating unit 610 to press the protective film B against the arc surface of the product A. The first driving unit 620 can be configured to be mounted on the third mounting seat 321 along the Z-axis direction, so as to be connected to the Z-axis group 313 together with the protective film adsorption mechanism 320, thereby improving the compactness of the layout, reducing the number of assembled parts, improving assembly efficiency, and reducing equipment costs. At the same time, the position flexibility of the first film-laminating mechanism 600 is improved, so that the first film-laminating mechanism 600 can be adaptively moved on the X-axis, Y-axis, and Z-axis according to the position of the product A, ensuring the position accuracy of the first film-laminating unit 610 relative to the film-laminating surface of the product A.

[0077] See also Fig.10 , Fig.11 and Fig.12The first film pressing unit 610 includes a floating pressing portion 611 arranged corresponding to the top of the arc surface, a fixed pressing portion 612 arranged on the side of the floating pressing portion 611, and a soft pressing portion 613 with predetermined elasticity arranged on one end of the floating pressing portion 611 facing the product A. The floating pressing portion 611 is used to adapt to the shape changes of the product surface and provide floating pressing ability. The setting of the fixed pressing portion 612 can enhance the pressing stability. The soft pressing portion 613 can form adaptive deformation during the pressing process due to its elastic characteristics to ensure that the protective film B is tightly attached to the arc surface. In a natural state, the floating pressing portion 611 faces one end of the product A (the lower end in the figure) beyond the same end of the fixed pressing portion 612. In the film-sticking state, the floating pressing part 611 is pressed on the top of the product A by the soft pressing part 613. Under the resisting force of the product A, the floating pressing part 611 floats away from the product A (upward) to make way for the soft pressing part 613, so that the pressing surface of the soft pressing part 613 can tightly adhere the protective film B to the arc surface of the product A.

[0078] The floating pressing part 611 and the fixed pressing part 612 are both connected to the output shaft of the first driving unit 620 through a first mounting seat 614. The lateral width of the floating pressing part 611 is adapted to the lateral width of the top surface A21 to ensure the stable fitting of the protective film B on the arc surface. The fixed pressing part 612 includes two fixed pressing blocks 612a arranged on both lateral sides of the floating pressing part 611, which are used to provide lateral support to the floating pressing part 611 during the film application process. The soft pressing part 613 can be configured as a high-density sponge, and its lateral width is greater than the lateral width of the floating pressing part 611. In this embodiment, the soft pressing part 613 completely covers the lower end surfaces of the floating pressing part 611 and the fixed pressing part 612.

[0079] In the process of driving the first film pressing unit 610 to move downward to apply the film, the soft pressing part 613 first contacts the top surface A21 of the product A. When the downward pressing force exceeds the deformation force of the high-density sponge, the downward pressing force is transmitted to the floating pressing part 611. The floating pressing part 611 floats in the direction away from the product A due to the pressing force of the product A toward one end surface of the product A, so that the floating pressing part 611 and the end surface of the product A gradually form a groove 615 with an opening toward the product A with the end surface of the two fixed pressing blocks 612a toward the product A. The groove 615 is used to avoid the soft pressing part 613, so that the lower end of the soft pressing part 613 forms an adaptive shape with the top surface A21, the first curved side surface A23 and the second curved side surface A24 of the product A, thereby tightly attaching the protective film B to the curved surface of the product A.

[0080] The floating pressing portion 611 includes a floating pressing block 6111 and a first floating assembly structure for floatingly assembling the floating pressing block 6111 on the first mounting seat 614 along the axial direction (Z-axis direction) of the output shaft of the first driving unit 620. The first floating assembly structure includes a first floating spring 6112 arranged between the first mounting seat 614 and the floating pressing block 6111 and a first guide assembly 6113 arranged along the Z-axis direction, and the first guide assembly 6113 is used to guide the floating pressing block 6111. The first floating spring 6112 is configured as a plurality of coil springs arranged at even intervals along the length direction of the floating pressing block 6111. The first guide assembly 6113 includes at least two guide members, each of which includes a sliding sleeve 6113a inserted on the first mounting seat 614 and a guide column 6113b slidably arranged in the sliding sleeve 6113a, and the lower end of the guide column 6113b is connected to the floating pressing block 6111.

[0081] The two opposite sides of the two fixed pressure blocks 612a are provided with limiting parts 616 for limiting the floating pressure block 6111 from being separated from the first mounting seat 614; the floating pressure block 6111 is provided with a matching part 617 corresponding to each limiting part 616.

[0082] The second film sticking mechanism 700 is configured to be disposed on the bottom plate and located on the outside of the second curved side surface A24 (one of the curved side surfaces), and is used to squeeze the protective film B from the second curved side surface A24 toward the first curved side surface A23 (the other curved side surface) so as to attach the fourth attachment portion B40 of the protective film B to the portion where the second curved side surface A24 intersects with the bottom surface A22.

[0083] See also Fig.13 and Fig.14 The second film laminating mechanism 700 includes a second film pressing unit 710 and a second driving unit 720 for driving the second film pressing unit 710 to move from the second arc-shaped side surface A24 to the first arc-shaped side surface A23. The second film pressing unit 710 includes a floating pressing roller assembly floatingly arranged along the vertical direction (Z-axis direction) between the top surface A21 and the bottom surface A22, and the axis of the floating pressing roller assembly is perpendicular to the vertical line and lower than the midpoint of the vertical line, that is, the floating pressing roller assembly is arranged parallel to the second part A20 and is located at the middle and lower position of the second part A20.

[0084] The floating roller assembly is configured in two groups, and the two groups of floating roller assemblies are used to respectively attach the two fourth attachment portions B40 of the protective film B to the product A. The two groups of floating roller assemblies are connected to the output shaft of the second driving unit 720 through a second mounting seat 730, and the floating roller assembly includes a roller 711 and a second floating assembly structure for floatingly mounting the roller 711 on the second mounting seat 730. The second floating assembly structure includes a mounting block 712 and a limit block 713 which are spaced apart along the vertical direction on a side of the second mounting seat 730 facing the product A, a pressure roller seat 714 movably arranged between the mounting block 712 and the limit block 713, a second floating spring 715 arranged between the pressure roller seat 714 and the mounting block 712, and a second guide assembly 716 arranged along the vertical direction, wherein the second guide assembly 716 is used for guiding the pressure roller seat 714; the pressure roller 711 is installed on the pressure roller seat 714 along a direction parallel to the bottom surface A22, and the axis of the pressure roller 711 is lower than the midpoint of the vertical line.

[0085] Specifically, an elongated assembly hole 731 for assembling and adjusting the height of the limit block 713 is provided at the position corresponding to the limit block 713 on the second mounting seat 730, and the length of the elongated assembly hole 731 is distributed along the vertical direction. The limit block 713 is mounted on the second mounting seat 730 through the elongated assembly hole 731 so that the position of the limit block 713 can be finely adjusted, thereby adjusting the maximum floating stroke of the pressure roller 711. The advantage is that the floating pressure roller assembly can be applied to products A of different sizes, and the floating pressure roller assembly can adjust the best position for each product A, so that the floating pressure roller assembly can better connect with the first film attaching device C, and the protective film B is completely and tightly attached to the product A.

[0086] The second guide assembly 716 is configured as second slide rails 716a disposed on both sides of the mounting block 712 and the stop block 713. The two sets of second slide rails 716a are distributed along the vertical direction so as to enable the pressure roller seat 714 slidably fitted thereon to move along the vertical direction. The two sets of second slide rails 716a, the stop block 713 distributed between the two sets of second slide rails 716a along the vertical direction, and the mounting block 712 together form a rectangular groove.

[0087] The pressure roller seat 714 has a floating seat 714a extending into the rectangular groove, a sliding seat 714b connected to the floating seat 714a and slidingly matched with the two sets of second slide rails 716a, and a pressure roller assembly seat 714c installed on the sliding seat 714b facing the side of the product A. The pressure roller 711 is assembled on the pressure roller assembly seat 714c along a direction perpendicular to the vertical line (a direction parallel to the bottom surface A22) and can rotate around its own axis. The floating seat 714a is provided with a mounting groove 7141 for mounting the second floating spring 715, and the notch of the mounting groove 7141 faces the mounting block 712. One end of the second floating spring 715 abuts against the mounting block 712, and the other end extends into the mounting groove 7141 and abuts against the bottom of the groove.

[0088] Based on the above embodiment, the working process of the automatic film pasting equipment and the film pasting device C thereof of the present invention is as follows: (i) the product fixture 110 is located at the loading position, the product is loaded onto the product fixture 110 and the start button is pressed; wherein, the end of the first part A10 of the product A away from the second part A20 is abutted against the base 111, so that the hole A11 on the product A is positioned and matched with the positioning column 113 on the side seat 112, so that the adsorption gas source adsorbs the first part A10 of the product A. In this state, the second part A20 of the product A is located above the side seat 112, and the top surface A21 of the second part A20 faces upward and the bottom surface A21 faces downward. The surface A22 faces downward; (ii) the control module enables the linear motion module to move the product fixture 110 to the film pasting position; (iii) during the movement of the product fixture 110 or after it moves to the film pasting position, the control module controls the film transfer device 300 to take the protective film B from the material taking position 210, and positions it at the visual positioning device, and transfers the positioned protective film B to the arc surface of the product A at the film pasting position; (iv) the transfer mechanism 310 is controlled to drive the first film pasting mechanism 600 to move in the XY axis direction so that the first film pasting mechanism 600 is aligned with the arc surface of the product A; the first driving unit 620 is controlled to drive the first film pressing unit 61 0 moves downward, the soft pressing part 613 of the first film pressing unit 610 first presses down the protective film B, and during the continuous pressing process, the resisting force is transmitted to the floating pressing part 611 through the soft pressing part 613, and the floating pressing part 611 floats upward. Under the elastic force of the first floating spring 6112, the resisting force of the product A, the deformation of the soft pressing part 613 itself and the constraint of the fixed pressing block 612a, the pressing surface of the soft pressing part 613 forms a shape that matches the arc surface of the product A, so that the first attaching part B10, the second attaching part B20 and the third attaching part B30 of the protective film B are closely attached to the arc surface. (V) Control the second driving unit 720 of the second film-sticking mechanism 700 to drive the second film-pressing unit 710 to move horizontally toward the product A. Since the axis of the pressing roller assembly is higher than the bottom surface A22 of the product A and lower than the midpoint of the vertical line between the bottom surface A22 and the top surface A21, under the pressure of the second curved side surface A24, the pressing roller 711 gradually moves toward the first curved side surface A23 and downward, thereby attaching the fourth attachment portion B40 of the protective film B to the position between the third attachment portion B30 and the bottom surface A22 of the product A; (VI) Control the linear motion module to move the product fixture 110 to the loading position and remove the product A.

[0089] The automatic film pasting equipment and the film pasting device C of the present invention have the following beneficial effects: (i) by controlling the linkage action of each device through the control module, a fully automated product film pasting process from loading to unloading is realized, the production efficiency and product A efficiency are improved, and the hands of the operator are freed; (ii) for the arc surface film pasting which is difficult to adhere, a floating holding part 611 is configured, a soft holding part 613 is configured at one end of the floating holding part 611 facing the product A, and a fixed holding part 613 is configured on the outer side of the floating holding part 611 2. By utilizing their positions, ingenious movement relationship and their own deformation characteristics, the arc surface of product A is well adapted during the film pasting process, so that the protective film B is densely attached to the arc surface of product A, achieving efficient and bubble-free film pasting requirements; (iii) For the bottom surface A22 that cannot be pasted by the first film pasting device C or the part where the bottom surface A22 intersects with the arc-shaped side surface, the second film pasting device C is used to adhere to it, so that the entire protective film B can be effectively and densely adhered to each film pasting surface of product A.

[0090] The above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A film sticking device, characterized in that: include: A first film-sticking mechanism, used for sticking the protective film on the arc surface of the product, the first film-sticking mechanism comprising a first film-pressing unit and a first driving unit used for driving the first film-pressing unit to press the protective film on the arc surface of the product; The first film pressing unit comprises: A floating holding portion, which is configured to correspond to the top of the arc surface, is used to adapt to the shape change of the product surface and provide a floating holding capability; A fixed pressing portion, which is configured to be disposed on a side of the floating pressing portion to enhance the pressing stability; and The soft pressing part is configured to be arranged on one end of the floating pressing part facing the product and has elastic properties, and can form adaptive deformation during the pressing process to ensure that the protective film is tightly attached to the arc surface.

2. The film sticking device according to claim 1, characterized in that: The arc surface has a top surface and two arc-shaped side surfaces connected to the top surface on both sides in the horizontal direction; The lateral width of the floating pressing portion is adapted to the lateral width of the top surface to ensure that the protective film is stably attached to the arc surface; The fixed pressing part includes two fixed pressing blocks arranged on both sides of the floating pressing part in the lateral direction, and used to provide lateral support for the floating pressing part during the film laminating process; The lateral width of the soft pressing portion is greater than the lateral width of the floating pressing block.

3. The film sticking device according to claim 2, characterized in that: The floating pressing part and the fixed pressing part are both connected to the output shaft of the first driving unit through a first mounting seat; the floating pressing part includes a floating pressing block and a first floating assembly structure for floatingly assembling the floating pressing block on the first mounting seat along the axial direction of the output shaft; The first floating assembly structure includes a first floating spring arranged between the first mounting seat and the floating pressure block and a first guide assembly arranged along the axial direction of the output shaft, and the first guide assembly is used to guide the floating pressure block.

4. The film sticking device according to claim 3, characterized in that: The two opposite sides of the two fixed pressure blocks are provided with limiting parts for limiting the floating pressure block from leaving the first mounting seat; and the floating pressure block is provided with a matching part corresponding to each limiting part at a position thereof.

5. The film sticking device according to claim 2, characterized in that: The product also has a bottom surface connected to one of the arc-shaped side surfaces and arranged opposite to the top surface; the film sticking device also includes: The second film sticking mechanism is arranged on the outside of one of the curved side surfaces, and is used to squeeze the protective film from one of the curved side surfaces toward the other curved side surface, so as to stick the protective film to the bottom surface or to the area where one of the curved side surfaces intersects with the bottom surface.

6. The film sticking device according to claim 5, characterized in that: The second film laminating mechanism includes a second film pressing unit and a second driving unit for driving the second film pressing unit to move from one of the curved side surfaces toward the other curved side surface; the second film pressing unit includes a floating pressing roller assembly floatingly arranged along the vertical direction between the top surface and the bottom surface, and the axis of the floating pressing roller assembly is perpendicular to the vertical line and lower than the midpoint of the vertical line.

7. The film sticking device according to claim 6, characterized in that: The floating pressure roller assembly is connected to the output shaft of the second driving unit through a second mounting seat; the floating pressure roller assembly includes a pressure roller and a second floating assembly structure for floatingly mounting the pressure roller on the second mounting seat; the second floating assembly structure includes mounting blocks and limit blocks spaced along a vertical direction on a side of the second mounting seat facing the product, a pressure roller seat movably arranged between the mounting block and the limit block, a second floating spring arranged between the pressure roller seat and the mounting block, and a second guide assembly arranged along the direction of the vertical line, wherein the second guide assembly is used to guide the pressure roller seat; the pressure roller is mounted on the pressure roller seat along a direction parallel to the bottom surface, and the axis of the pressure roller is lower than the midpoint of the vertical line.

8. An automatic film sticking device, characterized in that: include: A product fixture configured to secure a product; A film feeding device, which is configured to feed the protective film to a material taking position; A film transfer device configured to transfer the protective film at the material extraction position to the product; and A film sticking device, configured as the film sticking device as claimed in any one of claims 1 to 7, for sticking a protective film to the surface of a product.

9. The automatic film sticking equipment according to claim 8, characterized in that: The membrane transport device comprises: A protective film adsorption mechanism, which is configured to adsorb the protective film at the material extraction position and to release the product film at the product position; and The transfer mechanism is used to drive the protective film adsorption mechanism to move back and forth between the material extraction position and the product.

10. The automatic film sticking equipment according to claim 9, characterized in that: It also includes a visual positioning device, which is configured to be set in the transfer path of the transfer mechanism and is used to visually position the protective film; the film transfer device is also used to transfer the protective film to the visual positioning device for visual positioning during the process of transferring the product to the product.

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