Pipe fitting film pasting device and film pasting method

Abstract

The pipe fitting film pasting device comprises a vacuum adsorption unit, an upper pressing roller unit and a lower pressing roller unit, the vacuum adsorption unit comprises a vacuum disc assembly and vacuum generators, the vacuum disc assembly comprises at least two vacuum discs arranged side by side, and each vacuum disc is connected with at least two vacuum generators; the upper pressing roller unit comprises an upper pressing roller, the bottom plane of the upper pressing roller and the adsorption face of the vacuum disc are located on the same plane, and the lower pressing roller unit of the vacuum disc comprises two lower pressing rollers and a driving motor. According to the automatic film pasting machine, the cut film can be fixed by controlling all the vacuum generators, the adsorption force of each vacuum disc is reduced at the beginning of film pasting, pressure balance can be achieved, the pasted film is prevented from wrinkling, meanwhile, in the feeding process, the vacuum generators forming the farthest distance with a product are sequentially closed according to the feeding amount, and the film pasting efficiency is improved. And the film can be kept in a tightened state all the time, so that the film is further prevented from wrinkling.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting film application device technology, and more specifically to a pipe fitting film application device and film application method. Background Technology

[0002] Existing car door sliding guides are usually formed by bending and water-expanding aluminum tubes. During the forming process, the surface of the aluminum parts cannot be drawn or marked. To prevent this phenomenon, a film is usually applied to the surface of the aluminum tube before forming.

[0003] Currently, manual film application is used, which is time-consuming, inefficient, and prone to generating air bubbles and wrinkles, affecting the quality of subsequent processing. The inconsistent nature of manual operation leads to fluctuations in product yield and increases rework costs. Summary of the Invention

[0004] The technical problem to be solved by this invention is how to prevent wrinkles from appearing on the film applied to pipe fittings.

[0005] The present invention solves the above-mentioned technical problems through the following technical means: a pipe fitting film application device, including a vacuum adsorption unit, an upper pressure roller unit, and a lower pressure roller unit. The vacuum adsorption unit includes a vacuum disk assembly and a vacuum generator. The vacuum disk assembly includes at least two vacuum disks arranged side by side, and each vacuum disk is connected to at least two vacuum generators. The upper pressure roller unit includes an upper pressure roller, the bottom plane of which is on the same plane as the adsorption surface of the vacuum disk. The lower pressure roller unit of the vacuum disk includes two lower pressure rollers and a drive motor. The drive motor can drive the two lower pressure rollers arranged side by side to rotate on their respective axes. Both the upper pressure roller unit and the lower pressure roller unit can move toward or away from the area between the upper pressure roller unit and the lower pressure roller unit.

[0006] As a preferred technical solution, it also includes a workbench and a feeding unit, a film clamping unit, and a film cutting unit set on the workbench. The input end of the feeding unit is connected to the raw material tray of the feeding unit, the output end of the feeding unit is the film inlet, the first station of the film clamping unit is located at the film inlet, and the film cutting unit is provided outside the film inlet.

[0007] As a preferred technical solution, the film clamping unit includes a linear module, a film clamping cylinder, and film clamping grippers. The moving end of the linear module is fixedly connected to the film clamping cylinder, and the two output ends of the film clamping cylinder are respectively fixedly connected to a film clamping gripper. The moving end of the linear module can drive the film clamping cylinder and the film clamping grippers to move from the first station to the second station of the film clamping unit.

[0008] As a preferred technical solution, the film cutting unit includes a film cutting cylinder, a cutter, a film feed inlet vacuum suction cup, a pressing cylinder, and a lower blade fixing block. The film cutting unit is fixed to the top of the worktable by a film cutting fixing plate. The film cutting cylinder is fixedly connected to the end of the film cutting fixing plate facing the film clamping unit. The cutter is fixedly connected to the telescopic end of the film cutting cylinder. The pressing cylinder is fixedly connected to the end of the film cutting fixing plate away from the film clamping unit. The lower blade fixing block is fixedly connected to the telescopic end of the pressing cylinder. A film feed inlet vacuum suction cup is provided above the lower blade fixing block.

[0009] As a preferred technical solution, at least one upper support is fixedly connected to the worktable, and an upper cylinder fixing plate is fixedly connected to the upper support. An upper pressure roller unit and a vacuum adsorption unit are fixedly connected to the end of the upper cylinder fixing plate facing the worktable. The upper support is fixedly connected to the feeding unit through a feeding fixing plate. A cutting film fixing plate is fixedly connected to the worktable and is fixedly connected to the cutting film unit through the cutting film fixing plate. A film clamping fixing plate is fixedly connected to the worktable and is fixedly connected to the film clamping unit through the film clamping fixing plate.

[0010] As a preferred technical solution, the upper pressure roller unit also includes an upper cylinder and an upper cylinder fixing block. The upper cylinder is fixedly connected to the top of the upper cylinder fixing plate, and the upper cylinder fixing block is fixedly connected to the telescopic end of the upper cylinder. The upper cylinder fixing block is located below the plane where the bottom of the upper cylinder fixing plate is located, and the upper pressure roller is rotatably connected to the upper cylinder fixing block.

[0011] As a preferred technical solution, the lower pressure roller unit also includes a lower cylinder and a roller frame. The lower cylinder is fixedly connected to the bottom of the worktable, and the roller frame is fixedly connected to the end of the lower cylinder that extends into the top of the worktable. Both lower pressure rollers are rotatably connected to the roller frame, and a drive motor is fixedly connected to the roller frame. The drive motor is connected to the two lower pressure rollers through gears or gear sets.

[0012] As a preferred technical solution, the vacuum disk assembly includes three vacuum disks arranged side by side, each vacuum disk is connected to two vacuum generators, the vacuum generators are equipped with vacuum pressure valves and vacuum gauges, and the vacuum disks have multiple sets of adsorption holes.

[0013] As a preferred technical solution, when the upper and lower pressure rollers are in contact with the film, the midpoint of the line connecting the axes of the two lower pressure rollers is located in the same vertical plane as the axis of the upper pressure roller.

[0014] The present invention also provides a method for applying film to pipe fittings, using a pipe fitting film application device, including an upper pressure roller and a lower pressure roller moving towards each other, a vacuum disk assembly adsorbing the film, turning on all vacuum generators, turning off one of the vacuum generators connected to each vacuum disk during film application, and turning off the vacuum generator that forms the furthest distance from the product in sequence according to the feed amount during the film feeding process.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) In this invention, by controlling all vacuum generators, the cut film can be fixed. At the beginning of film application, the adsorption force of each vacuum disk is reduced, which can achieve pressure balance and prevent the film from wrinkling. At the same time, during the feeding process, the feed amount is turned off in sequence to the vacuum generator that forms the furthest distance from the product, which can keep the film in a taut state at all times, thereby further preventing the film from wrinkling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the vacuum disk assembly structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the lower pressure roller unit structure provided in an embodiment of the present invention; Figure 4 Provided for embodiments of the present invention Figure 3 A partially enlarged structural diagram; Figure 5 This is a schematic diagram of the vacuum adsorption unit structure provided in an embodiment of the present invention; Figure 6 The graphs showing the relationship between intake pressure and vacuum degree provided for embodiments of the present invention are shown, where A is the intake pressure and vacuum degree curve when one vacuum generator is turned on, and B is the intake pressure and vacuum degree curve when two vacuum generators are turned on. Reference numerals: 1. Workbench; 11. Upper support; 12. Upper cylinder fixing plate; 13. Film cutting fixing plate; 14. Feeding fixing plate; 15. Film clamping fixing plate; 2. Feeding unit; 21. Feeding roller; 3. Film clamping unit; 31. Linear module; 32. Film clamping cylinder; 33. Film clamping gripper; 4. Film cutting unit; 41. Film cutting cylinder; 42. Cutter; 43. Vacuum suction cup for film inlet; 44. Pressing cylinder; 45. Lower... 5. Knife-edge fixing block; 6. Upper pressure roller unit; 7. Upper cylinder; 8. Upper pressure roller; 9. Upper cylinder fixing block; 10. Vacuum adsorption unit; 11. Vacuum disk assembly; 12. Primary vacuum disk; 13. Secondary vacuum disk; 14. Tertiary vacuum disk; 15. Vacuum generator; 16. Vacuum pressure valve; 17. Vacuum gauge; 18. Lower pressure roller unit; 19. Lower cylinder; 10. Roller frame; 11. Lower pressure roller; 12. Drive motor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] See Figure 1 A pipe fitting film application device includes a workbench 1 and a feeding unit 2, a film clamping unit 3, a film cutting unit 4, an upper pressure roller unit 5, a vacuum adsorption unit 6, and a lower pressure roller unit 7 disposed on the workbench 1. Two upper supports 11 are fixedly connected to the workbench 1. An upper cylinder fixing plate 12 is fixedly connected to the two upper supports 11. An upper pressure roller unit 5 and a vacuum adsorption unit 6 are fixedly connected to the end of the upper cylinder fixing plate 12 facing the workbench 1. A feeding fixing plate 14 is fixedly connected to one upper support 11. A feeding unit 2 is fixedly connected to the feeding fixing plate 14. A cutting film fixing plate 13 is fixedly connected to the workbench 1. A cutting film fixing plate 4 is fixedly connected to the cutting film fixing plate 13. A film clamping fixing plate 15 is fixedly connected to the workbench 1. A film clamping unit 3 is fixedly connected to the film clamping fixing plate 15. The feeding unit 2 includes multiple feeding rollers 21 rotatably connected to one end of the feeding fixed plate 14. The multiple feeding rollers 21 are used to transport the film input from the raw material tray into the inlet of the feeding unit 2. The output end of the feeding unit 2 is the film inlet of the film clamping unit 3. The first station of the film clamping unit 3 is located at the film inlet.

[0020] See Figure 3 , Figure 4 The film clamping unit 3 includes a linear module 31, a film clamping cylinder 32, and film clamping claws 33. The linear module 31 is fixedly connected to the film clamping fixing plate 15. The moving end of the linear module 31 is fixedly connected to the film clamping cylinder 32. The two output ends of the film clamping cylinder 32 are respectively fixedly connected to a film clamping claw 33. The linear module 31 is a commercially available part. Its moving end can drive the film clamping cylinder 32 and the film clamping claws 33 to move along its length direction. When the film clamping cylinder 32 clamps the film through the two film clamping claws 33, the film can be kept in a taut state when the moving end of the linear module 31 drives the film clamping cylinder 32 and the two film clamping claws 33 to move. At the same time, the film is pulled from the right end of the linear module 31 to the left end, i.e., the second working position.

[0021] See Figure 3 , Figure 4A film cutting unit 4 is provided at the film inlet for clamping and cutting the film. The film cutting unit 4 includes a film cutting cylinder 41, a cutter 42, a film inlet vacuum suction cup 43, a pressing cylinder 44, and a lower blade fixing block 45. The film cutting unit 4 is fixed on the film cutting fixing plate 13. The film cutting cylinder 41 is fixedly connected to one end of the film cutting fixing plate 13 facing the film clamping unit 3. The cutting blade 42 is fixedly connected to the telescopic end of the film cutting cylinder 41. The cutting line of the cutting blade 42 can pass through the film. In this embodiment, the cutting blade 42 has an L-shaped structure. The cutting blade 42 moves from the top of the film toward the film and can cut the film. The pressing cylinder 44 is fixedly connected to one end of the film cutting fixing plate 13 away from the film clamping unit 3. The lower blade fixing block 45 is fixedly connected to the telescopic end of the pressing cylinder 44. A film inlet vacuum suction cup 43 is provided above the lower blade fixing block 45. The film inlet vacuum suction cup 43 is fixedly connected to the side wall of the loading fixing plate 14.

[0022] See Figure 1 The upper pressure roller unit 5 includes an upper cylinder 51, an upper pressure roller 52, and an upper cylinder fixing block 53. The upper cylinder 51 is fixedly connected to the top of the upper cylinder fixing plate 12, and the upper cylinder fixing block 53 is fixedly connected to the telescopic end of the upper cylinder 51. The upper cylinder fixing block 53 is located below the plane where the bottom of the upper cylinder fixing plate 12 is located, and the upper pressure roller 52 is rotatably connected to the upper cylinder fixing block 53.

[0023] See Figure 1 , Figure 2 The vacuum adsorption unit 6 includes a vacuum disk assembly 61, a vacuum generator 62, a vacuum pressure valve 63, and a vacuum gauge 64. The vacuum adsorption unit 6 is fixedly connected to the bottom of the upper cylinder fixing plate 12. The vacuum disk assembly 61 includes at least two vacuum disks. In this embodiment, three vacuum disks are used as an example: a primary vacuum disk 611, a secondary vacuum disk 612, and a tertiary vacuum disk 613. In this embodiment, the primary vacuum disk 611, the secondary vacuum disk 612, and the tertiary vacuum disk 613 are an integrated structure, controlled in three groups. The primary vacuum disk 611, the secondary vacuum disk 612, and the tertiary vacuum disk 613 are all arranged facing the lower pressure roller unit 7, and are arranged side by side. Each vacuum disk is connected to a set of vacuum generators. Each set of vacuum generators 62 includes at least two vacuum generators 62. In this embodiment... Taking two vacuum generators 62 as an example, two different vacuum levels can be achieved. When both sets of vacuum generators 62 work simultaneously, the vacuum level is high; when only one set of vacuum generators 62 works, the vacuum level is low. Each vacuum generator 62 is connected to a vacuum pressure valve 63 and a vacuum gauge 64. The first-stage vacuum disk 611, the second-stage vacuum disk 612, and the third-stage vacuum disk 613 have the same structure, and each vacuum disk has multiple sets of adsorption holes. It should be noted that in this embodiment, there are a total of six vacuum generators 62, namely vacuum generator one, vacuum generator two, vacuum generator three, vacuum generator four, vacuum generator five, and vacuum generator six. Among them, vacuum generator one and vacuum generator two are connected to the first-stage vacuum disk 611, vacuum generator three and vacuum generator four are connected to the second-stage vacuum disk 612, and vacuum generator five and vacuum generator six are connected to the third-stage vacuum disk 613.

[0024] See Figure 3 The lower pressure roller unit 7 includes a lower cylinder 71, a roller frame 72, lower pressure rollers 73, and a drive motor 74. The lower cylinder 71 is fixedly connected to the bottom of the worktable 1. The end of the lower cylinder 71 that extends into the top of the worktable 1 is fixedly connected to the roller frame 72. Two lower pressure rollers 73 are rotatably connected to the roller frame 72. The two lower pressure rollers 73 are used to drive the product to rotate. In this embodiment, the product is a circular aluminum tube. The drive motor 74 is fixedly connected to the roller frame 72. The output end of the drive motor 74 is connected to the two lower pressure rollers 73 and can drive the two lower pressure rollers 73 to rotate on their respective axes. In this embodiment, the drive motor 74 is connected to the two lower pressure rollers 73 through gears or gear sets.

[0025] It should be noted that when the upper pressure roller 52 and the two lower pressure rollers 73 are in contact with the film, the midpoint of the line connecting the axes of the two lower pressure rollers 73 and the axis of the upper pressure roller 52 are located in the same vertical plane. The two lower pressure rollers 73 are located in the same horizontal plane.

[0026] The screen protector application method includes the following steps: S1. The upper pressure roller 52 and the vacuum disc assembly 61 are in the initial rising position, the lower pressure roller 73 is in the initial falling position, the film clamping claw 33 is open and located in the rightmost position, and the film is manually installed to the film inlet. S2. Place the product on the two lower pressure rollers 73, and the film clamping claws 33 move to the film inlet through the linear module 31. S3, the clamping cylinder 32 drives the clamping jaws 33 to clamp the film and move to the leftmost position; S4. The vacuum suction cup 43 at the membrane feed port works, and the clamping cylinder 44 drives the lower blade fixing block 45 to press the membrane. S5. The lower cylinder 71 rises, and the upper pressure roller 52 and vacuum disk assembly 61 descend, pressing the film and the product together. Then, the first-stage vacuum disk 611, the second-stage vacuum disk 612, and the third-stage vacuum disk 613 of the vacuum disk assembly 61 work. At this time, all six vacuum generators 62 are turned on and in working condition. S6. The membrane cutting cylinder 41 is activated, driving the cutter 42 to cut the membrane, and the membrane cutting cylinder 41 returns to its original position. S7. Vacuum generators 1, 3, and 5 stop working, while vacuum generators 2, 4, and 6 continue working. The suction force of vacuum disc assembly 61 decreases compared to when it is fully open. Drive motor 74 drives the lower pressure roller 73 to rotate, causing the product to rotate. The film rotates with the product, and the film application begins. After the product rotates one revolution, drive motor 74 stops, and vacuum generators 2, 4, and 6 stop working. It should be noted that, as the membrane is fed towards the product, during the film application process, the third-level vacuum disk 613, the second-level vacuum disk 612, and the first-level vacuum disk 611 are closed sequentially to meet the membrane feeding requirements. At the same time, a vacuum disk is always maintained to adsorb the membrane and prevent wrinkles from forming. For example, vacuum generators six, four, and two are closed sequentially. During this process, when vacuum generator six is ​​closed, vacuum generators four and two remain open to ensure pressure balance and prevent wrinkles from forming on the membrane.

[0027] S8. The lower cylinder 71 descends, the upper pressure roller 52 and vacuum disc assembly 61 rise, the pressing cylinder 44 retracts, the product is manually removed, and then the product is placed back in for the next production run.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe member film attaching device characterized by comprising: The vacuum suction unit includes a vacuum disc assembly and a vacuum generator, the vacuum disc assembly includes at least two vacuum discs arranged side by side, each vacuum disc is connected with at least two vacuum generators, the upper pressing roller unit includes an upper pressing roller, the bottom plane of the upper pressing roller is located in the same plane as the suction surface of the vacuum disc, the lower pressing roller unit of the vacuum disc includes two lower pressing rollers and a driving motor, the driving motor can drive the two lower pressing rollers arranged side by side to rotate around their axes respectively, and the upper pressing roller unit and the lower pressing roller unit can move towards or away from the area between the upper pressing roller unit and the lower pressing roller unit.

2. The apparatus according to claim 1, wherein The workbench is further provided with an upper feeding unit, a film clamping unit and a film cutting unit, the input end of the upper feeding unit is connected with a raw material disc of the upper feeding unit, the output end of the upper feeding unit is a film feeding port, the first station of the film clamping unit is located at the film feeding port, and the film cutting unit is arranged outside the film feeding port.

3. The apparatus according to claim 2, wherein The film clamping unit includes a linear module, a film clamping cylinder and a film clamping jaw, the moving end of the linear module is fixedly connected with the film clamping cylinder, the two output ends of the film clamping cylinder are respectively fixedly connected with one film clamping jaw, and the moving end of the linear module can drive the film clamping cylinder and the film clamping jaw to move from the first station to the second station of the film clamping unit.

4. The apparatus according to claim 2, wherein The film cutting unit includes a film cutting cylinder, a cutter, a film feeding port vacuum suction disc, a pressing cylinder and a lower cutter fixed block, the film cutting unit is fixed on the top of the workbench through a film cutting fixing plate, one end of the film cutting fixing plate fixedly connected with the film cutting cylinder, the extension end of the film cutting cylinder is fixedly connected with the cutter, the end of the film cutting fixing plate away from the film clamping unit is fixedly connected with the pressing cylinder, the extension end of the pressing cylinder is fixedly connected with the lower cutter fixed block, and the film feeding port vacuum suction disc is arranged above the lower cutter fixed block.

5. The apparatus of claim 2, wherein the apparatus further comprises a film applicator. The workbench is further provided with at least one upper support fixedly connected thereto, an upper cylinder fixing plate fixedly connected with the upper support, one end of the upper cylinder fixing plate fixedly connected with the upper pressing roller unit and the vacuum suction unit, the upper feeding unit fixedly connected with the upper feeding fixing plate, the film cutting unit fixedly connected with the film cutting fixing plate, and the film clamping unit fixedly connected with the film clamping fixing plate.

6. The apparatus of claim 5, wherein the apparatus further comprises a film applicator. The upper pressing roller unit further includes an upper cylinder and an upper cylinder fixing block, the top of the upper cylinder fixing plate is fixedly connected with the upper cylinder, the extension end of the upper cylinder is fixedly connected with the upper cylinder fixing block, the upper cylinder fixing block is located below the plane where the bottom of the upper cylinder fixing plate is located, and the upper pressing roller is rotatably connected to the upper cylinder fixing block.

7. The apparatus of claim 5, wherein the apparatus further comprises a film applicator. The lower pressing roller unit further includes a lower cylinder and a roller frame, the bottom of the workbench is fixedly connected with the lower cylinder, the extension end of the lower cylinder penetrates into one end of the top of the workbench and is fixedly connected with the roller frame, the two lower pressing rollers are rotatably connected to the roller frame, the roller frame is fixedly connected with the driving motor, and the driving motor is in transmission connection with the two lower pressing rollers through a gear or a gear set.

8. The apparatus of claim 1, wherein the apparatus further comprises a film applicator. The vacuum disc assembly includes three vacuum discs arranged side by side, each vacuum disc is connected with two vacuum generators, the vacuum generator is provided with a vacuum pressure regulating valve and a vacuum gauge, and a plurality of suction holes are formed in the vacuum disc.

9. The apparatus of claim 1, wherein the apparatus further comprises a film applicator. The midpoint of the line connecting the axes of the two lower pressure rollers and the axis of the upper pressure roller lie in the same vertical plane when the upper and lower pressure rollers contact the film.

10. A method of taping a pipe, characterized by, The film pasting device is used as claimed in any one of claims 1-9, wherein the upper and lower pressure rollers are moved towards each other, the vacuum disc assembly is adsorbed with the film, all the vacuum generators are turned on, during film pasting, one of the vacuum generators connected to each vacuum disc is turned off, and during film feeding, the vacuum generators farthest from the product are turned off according to the feeding amount.

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