Laminating mechanism of a foam laminating device for a touch screen

Abstract

The invention discloses a bonding mechanism of a foam bonding device for a touch screen, which comprises a bonding fixed plate, a feeding swing arm, a feeding driving device, a pressing component, a cutting component, and a first slider and a second slider which cooperate with each other; the feeding driving device is installed on the bonding fixed plate, and the output shaft of the feeding driving device is hinged to the middle or rear end of the feeding swing arm through the first slider. The first slider is inclined and slidably installed on the bonding fixed plate through a first slide rail assembly; the second slider is inclined and slidably installed on the bonding fixed plate through a second slide rail assembly, and the second slider is hinged to the front end of the feeding swing arm in a cooperative manner; a feeding groove extending in the front-rear direction and used for inserting a foam strip is arranged on the feeding swing arm; the pressing component is installed on the bonding fixed plate and is located in front of the feeding swing arm; the cutting component is installed on the bonding fixed plate and is used for cutting the foam strip. The invention has the advantages of high processing efficiency and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of laminating devices, and more particularly to a laminating mechanism for a foam laminating device for a touch screen. Background Art

[0002] As is well known, during the production of mobile phone touch screens (or in-vehicle touch screens, etc.), it is necessary to laminate foam on the back of the product to prevent dust generation and interference between the liquid crystal module and the touch screen. Since the foam is soft and cannot enter the visible area, it can only be laminated at the edge. Traditionally, usually four strip-shaped foams are manually pasted on the workpiece, and then the excess part after lamination is cut off. However, when manually laminating the foam, the lamination position is not accurate, not only the yield is low, which does not conform to the continuous production process of the factory, the efficiency is slow, it cannot meet the market supply demand, wastes a large amount of manpower, increases the economic cost at the same time, and has a high usage limitation, resulting in low available reliability. Summary of the Invention

[0003] Aiming at the above problems existing in the prior art, the object of the present invention is to provide a laminating mechanism for a foam laminating device for a touch screen, which can automatically laminate strip-shaped foam strips on the workpiece without manual lamination. At the same time, it also has the advantages of high automation, simple operation, high lamination accuracy and high lamination efficiency, and strong practicability.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] A laminating mechanism for a foam laminating device for a touch screen includes a laminating fixed plate, a feeding swing arm, a feeding driving device, a pressing component, a cutting component, and a first slider and a second slider that cooperate with each other; the feeding driving device is installed on one end face of the laminating fixed plate, and the output shaft of the feeding driving device is hinged to the middle or rear end of the feeding swing arm through the first slider, and the first slider is inclined and slidably installed on the laminating fixed plate through a first slide rail assembly; the second slider is inclined and slidably installed on the laminating fixed plate through a second slide rail assembly, and the second slider is hinged to the front end of the feeding swing arm in cooperation; the feeding driving device can drive the feeding swing arm to swing up and down; a feeding groove extending in the front-rear direction and used for inserting the foam strip is provided on the feeding swing arm; the pressing component is installed on the laminating fixed plate and the pressing component is located in front of the feeding swing arm; the cutting component is installed on the laminating fixed plate and is used for cutting the foam strip.

[0006] As a specific embodiment, the pressing component includes a pressing driving device installed on the laminating fixed plate and a pressing wheel fixed on the output shaft of the pressing driving device, and the pressing driving device can drive the pressing wheel to move up and down.

[0007] As a specific embodiment, the feeding swing arm includes a swing arm and a feeding block mounted on the swing arm; the output shaft of the feeding driving device is hinged to the middle or rear end of the swing arm through the first slider, and the second slider is hingedly engaged with the front end of the swing arm; the feeding groove is arranged on the feeding block.

[0008] Further, the feeding block includes a feeding fixed block connected to the swing arm and an air sealing block connected to the bottom of the feeding fixed block; an extension portion extends downward on one side of the bottom of the air sealing block; the feeding block further includes a detachable adjusting block arranged on the other side of the bottom of the air sealing block, and the adjusting block can slide back and forth in the direction of the extension portion through the adjustment of an adjusting member; a feeding groove is formed between the adjusting block and the extension portion.

[0009] Further, the adjusting member is a bolt; strip-shaped adjusting holes corresponding to each other are respectively arranged on the feeding fixed block and the air sealing block, and a locking hole corresponding to the strip-shaped adjusting hole is arranged in the adjusting block, and the adjusting member is respectively connected in the strip-shaped adjusting hole and the locking hole.

[0010] Further, the laminating mechanism of the foam laminating device for a touch screen further includes a vacuum suction mechanism; the vacuum suction mechanism includes an air suction channel arranged on the feeding block and having one end communicated with the upper end of the feeding groove; the air suction channel includes a first air suction hole and an air suction cavity which are arranged on the feeding fixed block and communicated with each other, and a second air suction hole arranged on the air sealing block, and the second air suction hole is respectively communicated with the air suction cavity and the feeding groove; the width of the second air suction hole is smaller than the width of the foam strip.

[0011] As a specific embodiment, a top plate is arranged on the first slider; two limiting plates distributed up and down are further arranged on the laminating fixing plate, and one end of the top plate is located between the two limiting plates.

[0012] As a specific embodiment, at least one one-way bearing is further mounted on the feeding swing arm and located at the rear side of the feeding end of the feeding groove.

[0013] As a specific embodiment, the cutting assembly includes a stopper and a cutter that cooperate with each other, and a cutter driving device for driving the cutter; the stopper is slidably mounted on one end surface of the fitting fixing plate through a third slide rail assembly; a fixing rod is inserted into the stopper and the upper end of the fixing rod is connected to the fitting fixing plate, and a spring sleeved on the fixing rod is further provided in the stopper; a sliding surface is provided on the bottom surface of the second slider, and the sliding surface includes a flat surface and an inward concave arc surface that are sequentially connected from front to back; a needle roller bearing corresponding to and cooperating with the sliding surface is further provided on the end surface of the stopper; the cutter is located below the stopper; the cutter is mounted on the cutter driving device and the cutter is located between the feeding groove and the pressing wheel; the cutter driving device can correspondingly drive the cutter to horizontally move and vertically move towards the stopper, and when the cutter moves upward, the cutter can cooperate with the stopper to cut off the foam strip.

[0014] As a specific embodiment, the cutter driving device includes a cutter fixing plate, a cutter cylinder, a retraction block, a wheel groove block, an upper cutter block and a lower cutter block; the cutter fixing plate is mounted on the other end surface of the fitting fixing plate; the retraction block is slidably mounted on the bottom of the cutter fixing plate through a fourth slide rail assembly and can horizontally slide back and forth towards the feeding swing arm; the upper cutter block and the lower cutter block are correspondingly mounted on one side of the cutter fixing plate in a mutually cooperating manner and can slide up and down through a fourth slide rail assembly. An upper hook portion and a lower hook portion that cooperate with each other are respectively provided at the lower end of the upper cutter block and the upper end of the lower cutter block, and the cutter is mounted on the side surface of the lower cutter block facing the feeding swing arm; the cutter cylinder is fixed on the retraction block and the output shaft of the cutter cylinder is connected to the upper cutter block, so that the cutter cylinder can drive the upper cutter block to slide up and down; the wheel groove block is mounted on one side of the cutter fixing plate and a wheel groove is provided in the wheel groove block. The wheel groove has a vertical section and an inclined section that are sequentially connected from top to bottom; a wheel groove bearing that can be slidably inserted into the wheel groove is further provided on the upper cutter block; when the wheel groove bearing slides in the inclined section, the cutter can be horizontally moved towards the stopper; when the wheel groove bearing slides in the vertical section, the cutter can be vertically moved.

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

[0016] (1) The present invention can attach a strip-shaped foam strip to the top surface of the workpiece. Therefore, during work, only one foam strip needs to be attached to each of the four side edges on the top surface of the workpiece to form a frame-shaped foam. This attachment method has a high degree of automation and can realize automatic foam attachment, which can greatly improve the processing efficiency compared with the prior art.

[0017] (ii) The feeding method of the present invention, which utilizes a feeding drive device to drive the feeding swing arm to swing and then drives the foam strip to move forward in an arc shape, can improve the docking accuracy between two adjacent foam strips on the workpiece. The docking gap between two adjacent foam strips pasted by the pasting mechanism of the present invention is generally less than 0.2mm, thereby improving the processing efficiency while ensuring the quality of the product; moreover, this feeding method utilizing the swinging of the feeding swing arm can also complete the feeding without the front end of the foam strip extending too long from the feeding block. If the foam strip extends too long, it will easily cause the foam strip to bend (because the foam strip has a soft In this way, it is difficult to ensure the docking accuracy between two adjacent foam strips on the top surface of the workpiece, that is, this feeding method further improves the accuracy of the equipment; and in the bonding process, the foam strip is pressed against the workpiece by a pressing wheel to ensure that the foam strip is not twisted, thereby improving the flatness of the foam strip and improving the quality of the product; at the same time, after the foam strip of a preset length is bonded to the workpiece, the feeding swing arm will reset upward, so that the part of the foam strip between the feeding block and the workpiece and not bonded to the workpiece can be driven to warp upward, thereby reserving space for the tool to be inserted under the foam strip for the subsequent foam strip cutting process.

[0018] (III) The cutting assembly of the present invention can conveniently cut the foam strip through the cooperation of the cutter and the stopper, and when the cutter cylinder drives the wheel groove bearing to slide in the inclined section of the wheel groove, the cutter can be horizontally inserted below the corresponding position of the foam strip. The advantage of this design is that before the cutter moves horizontally, since the cutter is located on one side of the foam strip, the cutter will not hinder the movement of the foam strip, that is, it can prevent the foam strip from hitting the cutter; when the cutter cylinder drives the wheel groove bearing to slide in the vertical section of the wheel groove, the cutter slides upward, so that it can cooperate with the stopper to cut the foam strip. By arranging a plane and an inner concave arc surface on the second slider, arranging a wheel groove bearing respectively matched with the plane and the inner concave arc surface on the stopper, and arranging a fixing rod and a spring in the stopper, the stopper can be conveniently driven to slide synchronously by the sliding of the second slider, and the spring can provide elastic force for the stopper, and when the swing arm is feeding, the wheel groove bearing will also transition to the inner concave arc surface, so that the elastic force of the spring can be used to drive the stopper to rise, thereby preventing the foam strip from hitting the stopper. Therefore, the practical cutting assembly is cleverly designed, high in precision, fast in cutting efficiency and good in cutting effect.

[0019] (iv) The present invention provides an adjustable adjustment block, so that the width of the feed trough can be changed by adjusting the position of the adjustment block, so that the feed trough can be suitable for foam strips of different widths to meet people's different production needs.

[0020] (5) By providing a vacuum feeding mechanism, the present invention can conveniently fix the foam strip located in the feeding trough and provide a certain pulling force to prevent the foam strip from falling while adding a certain resistance to the foam strip, enabling it to be pulled in the feeding trough for easy fitting. Since the foam strip is made of elastic material, if the resistance is too large, it will deform during pulling; if the resistance is too small, the foam strip cannot be in a slightly taut state during fitting. Therefore, the vacuum feeding method can well provide a certain pulling force for the foam strip without making the pulling force too large.

[0021] (6) By providing a top plate on the first slider and correspondingly providing two limit plates distributed vertically on the fitting fixing plate, the present invention can limit the stroke of the top plate, thereby preventing the first slider from deviating from the preset route and ensuring that the feeding swing arm does not deviate from the preset route. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the schematic diagram of the overall structure of the present invention Figure 1 ;

[0023] Figure 2 is Figure 1 the schematic diagram of the structure after removing the feeding swing arm in

[0024] Figure 3 is the schematic diagram of the installation structure of the stopper, fixed rod and spring of the present invention;

[0025] Figure 4 is the schematic diagram of the overall structure of the present invention Figure 2 ;

[0026] Figure 5 is Figure 4 the exploded view of

[0027] Figure 6 is the schematic diagram of the structure of the cutting component of the present invention;

[0028] Figure 7 is Figure 6 the exploded view of

[0029] Figure 8 is the longitudinal sectional view of the feeding block of the present invention;

[0030] Figure 9 is the exploded view of the feeding block of the present invention;

[0031] Figure 10 is the schematic diagram of the working principle of the cutting component of the present invention;

[0032] Figure 11 is the schematic diagram when the present invention is in use.

[0033] Reference Signs:

[0034] 1. Fitting fixed plate; 2. Feeding swing arm; 21. Swing arm; 22. Feeding block; 221. Feeding fixed block; 222. Air sealing block; 223. Extension part; 224. Adjusting block; 225. Strip-shaped adjusting hole; 226. Lock hole; 227. Suction channel; 228. First suction hole; 229. Suction cavity; 230. Second suction hole; 201. Feeding groove; 3. Feeding driving device; 4. Pressing component; 41. Pressing driving device; 42. Pressing wheel; 5. First slider; 6. Second slider; 7. Top plate; 8. Limiting plate; 9. One-way bearing; 11. Stopper; 12. Cutting knife; 13. Third slide rail assembly; 14. Fixed rod; 15. Spring; 16. Plane; 17. Concave arc surface; 18. Needle roller bearing; 19. Cutting knife fixing plate; 20. Cutting knife cylinder; 23. Retracting block; 24. Groove block; 241. Groove; 2411. Vertical section; 2412. Inclined section; 25. Upper cutting knife block; 251. Upper hook part; 26. Lower cutting knife block; 261. Lower hook part; 27. Fourth slide rail assembly; 28. Fifth slide rail assembly; 29. Groove bearing; 100. Cutting-off assembly; 101. Foam strip; 102. Workbench. Detailed implementation manners

[0035] The invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The following description is only exemplary and does not limit the protection scope of the invention.

[0036] As Figures 1 - 9 shown, a fitting mechanism of a foam fitting device for a touch screen includes a fitting fixed plate 1, a feeding swing arm 2, a feeding driving device 3, a pressing component 4, a cutting-off assembly 100, and a first slider 5 and a second slider 6 that cooperate with each other; As Figure 1As shown, the feeding driving device 3 is installed on one end face of the laminating fixing plate 1, and the output shaft of the feeding driving device 3 is hinged to the middle or rear end of the feeding swing arm 2 through the first slider 51. The first slider 5 is inclined and slidably installed on the laminating fixing plate 1 through a first slide rail assembly 51. In this embodiment, the output shaft of the feeding driving device 3 is hinged to the middle of the feeding swing arm 2 through the first slider 51; the second slider 6 is inclined and slidably installed on the laminating fixing plate 1 through a second slide rail assembly 61; the second slider 61 is hinged to the front end of the feeding swing arm 2 in a matching manner; the feeding driving device 3 can drive the feeding swing arm 2 to swing up and down; a feeding groove 201 extending in the front-rear direction and used for inserting the foam strip 101 is arranged on the feeding swing arm 2; the pressing component 4 is installed on the laminating fixing plate 1 and the pressing component 4 is located in front of the feeding swing arm 2; the cutting component 100 is installed on the laminating fixing plate 1 and is used for cutting the foam strip 101. Through the above settings, the present invention can drive the feeding swing arm 2 to swing downward by the feeding driving device 3, so as to drive the foam strip 101 located in the feeding groove 201 to move forward in an arc-shaped motion. Since the front end of the foam strip 101 will extend about nine millimeters out of the discharge end of the feeding groove 201 when it is installed in the feeding groove 201, therefore, when the foam strip 101 swings to the preset position, the feeding before the laminating process is completed. At this time, the front end of the foam strip 101 swings to the lower part of the pressing component 4, so that the foam strip 101 can be pressed tightly on the workpiece located below the foam strip 101 by the pressing component 4. Of course, a workbench 102 for fixing the workpiece is also arranged below the workpiece. Then, by using the module to drive the workbench 102 to slide outwards, the laminating can be completed; after the laminating is completed, the feeding driving device 3 drives the feeding swing arm 2 to reset, so that the part of the foam strip 101 that extends out of the feeding groove 201 but is not laminated with the workpiece swings upward, thus leaving an operation space for the cutting component 100 to cut the foam strip 101. Then, the cutting component 100 can be used to cut the foam strip 101.

[0037] Among them, the pressing component 4 includes a pressing driving device 41 installed on the laminating fixing plate 1 and a pressing wheel 42 fixed on the output shaft of the pressing driving device 3. The pressing driving device 41 can drive the pressing wheel 42 to move up and down. Through the above settings, the pressing driving device 41 can be used to drive the pressing wheel 42 to move up and down, so that the pressing wheel 42 can better press the front end of the foam strip 101 on the workpiece.

[0038] Both the feeding driving device 3 and the pressing driving device 41 are cylinders.

[0039] Such as Figure 1As shown, the feeding swing arm 2 includes a swing arm 21 and a feeding block 22 mounted on the swing arm 21; the output shaft of the feeding driving device 3 is hinged to the middle of the swing arm 21 through a first slider 5, and the second slider 6 is hinged to cooperate with the front end of the swing arm 21; the feeding groove 201 is arranged on the feeding block 22. Through the above settings, the feeding block 22 can be disassembled and assembled conveniently.

[0040] As Figure 8 and Figure 9 shown, the feeding block 22 includes a feeding fixing block 221 connected to the swing arm 21 and an air sealing block 222 connected to the bottom of the feeding fixing block 221; on one side of the bottom of the air sealing block 222, an extending portion 223 extends downward; the feeding block 22 further includes an adjustable block 224 arranged on the other side of the bottom of the air sealing block 222 and detachable, and the adjustable block 224 can slide back and forth in the direction of the extending portion 223 through the adjustment of an adjusting member (not shown in the figure); a feeding groove 201 is formed between the adjustable block 224 and the extending portion 223. By setting the adjustable adjustable block 224 and its cooperation with the extending portion 223, the width of the feeding groove 291 can be conveniently adjusted, so that the feeding block 22 can be applicable to foam strips 101 of different widths to meet different production requirements of people.

[0041] The adjusting member is a bolt. As Figure 9 shown, strip-shaped adjusting holes 225 corresponding to each other are respectively arranged on the feeding fixing block 221 and the air sealing block 222, and locking holes 226 corresponding to the strip-shaped adjusting holes 225 are arranged in the adjustable block 224, and the adjusting member is respectively connected in the strip-shaped adjusting holes 225 and the locking holes 226. Specifically, the length direction of the strip-shaped adjusting hole 225 is the same as the width direction of the feeding block 22. More specifically, there are two adjusting members. Correspondingly, there are also two strip-shaped adjusting holes 225 in the feeding fixing block 221 and the air sealing block 222 respectively, and there are also two corresponding locking holes 226 in the adjustable block 224. The two locking holes 226 are distributed along the length direction of the adjustable block 25, so that when the adjusting member is locked, the structure between the feeding fixing block 221, the air sealing block 222 and the adjustable block 224 is more stable and firm, and the adjustable block 224 is not easy to loosen. During adjustment, first, the adjusting member slides in the two strip-shaped adjusting holes 225 and adjusts the position correspondingly, and then the adjusting member is locked with the locking hole 226 of the adjustable block 224, and thus the adjustment is completed. Through the above settings, when the adjustable block 224 needs to be adjusted, only the adjusting member needs to be turned, and the adjustment process is simple and convenient.

[0042] As Figure 8 and Figure 9As shown in the figure, the bonding mechanism of the foam bonding device for the touch screen further includes a vacuum suction mechanism; the vacuum suction mechanism includes a suction channel 227 provided on the feeding block 22 and communicating with the upper end of the feeding groove 201 at one end; the suction channel 227 includes a first suction hole 228 and a suction cavity 229 that are located on the feeding fixing block 221 and communicate with each other, and a second suction hole 230 located in the air sealing block 222. The second suction hole 230 communicates with the suction cavity 229 and the feeding groove 201 respectively, and the first suction hole 228 is used to connect a vacuum generator (not shown in the figure); the width of the second suction hole 230 is smaller than the width of the foam strip 101 to prevent the foam strip 101 from being embedded in the second suction hole 230 and causing deformation; preferably, a plurality of second suction holes 230 are provided and evenly distributed along the length direction of the air sealing block 222, so that the foam strip 101 can be fixed more stably, and there is one first suction hole 228. By setting the vacuum suction mechanism, the foam strip 101 located in the feeding groove 201 can be conveniently fixed, and a certain pulling force is provided to prevent the foam strip 101 from falling off. At the same time, a certain resistance can be added to the foam strip 101, so that it can be pulled in the feeding groove 201, which is convenient for bonding; since the material of the foam strip 101 is elastic, if the resistance is too large, it will deform during pulling, and if the resistance is too small, the foam strip cannot be in a slightly taut state during bonding. Therefore, the vacuum suction method can well provide a certain pulling force for the foam strip 101.

[0043] As Figure 1 shown in the figure, a top plate 7 is provided on the first slider 5; two limiting plates 8 are also provided on the bonding fixing plate 1 and are distributed up and down. One end of the top plate 7 is located between the two limiting plates 8. By setting the top plate 7 and the two limiting plates 8, the first slider 5 can be conveniently limited. Since the top plate 7 has been sliding between the two limiting plates 8, the first slider 5 can be prevented from deviating from the preset stroke, and further, the swing range of the feeding swing arm 2 can be limited to prevent the feeding swing arm 2 from deviating from the preset stroke during the swinging process. Therefore, by setting the top plate 7 and the two limiting plates 8, the movement accuracy of the present invention can be improved.

[0044] As Figure 1 shown in the figure, at least one one-way bearing 9 is further installed on the feeding swing arm 2 and is located behind the feeding end of the feeding groove 201. Specifically, the one-way bearing 9 is installed on the swing arm 21. By setting the one-way bearing 9, after the end face of the foam strip 101 with adhesiveness adheres to the one-way bearing 9, the foam strip 101 is not easy to move backward, that is, the one-way bearing 9 can provide a certain resistance for the foam strip 101 after being bonded to the foam strip 101.

[0045] As Figures 1 - 7As shown in the figure, the cutting assembly 100 includes a stopper 11 and a cutter 12 that cooperate with each other, and a cutter driving device for driving the cutter 12; the stopper 11 is slidably mounted on one end face of the fitting fixing plate 1 through a third slide rail assembly 13; a fixing rod 14 is inserted into the stopper 11 and the upper end of the fixing rod 14 is connected to the fitting fixing plate 1, and a spring 15 sleeved on the fixing rod 14 is further provided in the stopper 11; a sliding surface is provided on the bottom surface of the second slider 6, and the sliding surface includes a flat surface 16 and a concave arc surface 17 that are connected in sequence from front to back; a needle roller bearing 18 corresponding to the sliding surface is further provided on the end face of the stopper 11; the cutter 12 is located below the stopper 11; the cutter 12 is mounted on the cutter driving device and the cutter 12 is located between the feeding groove 201 and the pressing wheel 42; the cutter driving device can correspondingly drive the cutter 12 to horizontally move and vertically move in the direction of the stopper 11, and when the cutter 12 moves upward, the cutter 12 can cooperate with the stopper 11 to cut off the foam strip 101. In this embodiment, the stopper 11 has a main body and a stopper portion located at the bottom of the main body. Through the above settings, the foam strip 101 can be cut off conveniently. Specifically, when in use, when the feeding swing arm 2 swings downward, that is, when the second slider 6 slides forward, the needle roller bearing 18 transitions from the flat surface 16 to the concave arc surface 17, and then the extension force of the spring 15 is used to make the stopper 11 slide upward and leave a space, so as to prevent the stopper 11 from blocking the front end of the foam strip 101; when the foam strip 101 needs to be cut off after being pasted, the feeding swing arm 2 resets and swings upward, so that the foam strip 101 warps upward at the position between the feeding block 22 and the workpiece to leave a space for the cutter 12 to insert. When the feeding swing arm 2 resets, it drives the second slider 6 to slide backward, so that the needle roller bearing 18 transitions from the concave arc surface 17 to the flat surface 16, and the second slider 6 synchronously presses the stopper 11 downward by a certain distance. Immediately afterwards, the cutter driving device drives the cutter 12 to horizontally move, so that the cutter 12 moves in the direction of the baffle 11 and inserts below the foam strip 101. Finally, the cutter driving device drives the cutter 12 to move upward and the cutter 12 finally contacts the stopper 11, that is, in a closed state, so that the foam strip 101 can be cut off. The present invention uses the cutter driving device to drive the cutter 12 to horizontally move and vertically move, which can prevent the cutter 12 from blocking the foam strip 101 when the foam strip 101 swings. Therefore, in the original state, the cutter 12 is located on one side of the front end of the foam strip 101, so as to ensure that the foam strip 101 will not hit the cutter, and at this time the needle roller bearing 18 is located at the concave arc surface 17, that is, the stopper 11 and the cutter 12 are in an open state, so the stopper 11 will not be hit by the foam strip 101 either.

[0046] The cutter driving device includes a cutter fixing plate 19, a cutter cylinder 20, a retraction block 21, a wheel groove block 24, an upper cutter block 25 and a lower cutter block 26; the cutter fixing plate 19 is installed on the other end face of the fitting fixing plate 1; the retraction block 23 is horizontally slidably installed on the bottom of the cutter fixing plate 19 in a reciprocating manner towards the feeding swing arm 2 through a fourth slide rail assembly 27. More specifically, the moving direction of the retraction block 23 and the moving direction of the cutter 12 during horizontal movement are perpendicular to the moving direction of the foam strip 101 in the feeding groove 201; the upper cutter block 25 and the lower cutter block 26 are cooperatively and slidably installed up and down corresponding to each other on one side of the cutter fixing plate 19 through a fifth slide rail assembly 28. An upper hook portion 251 and a lower hook portion 261 which are cooperatively corresponding to each other are respectively provided at the lower end of the upper cutter block 25 and the upper end of the lower cutter block 26. The cutter 12 is installed on the side surface of the lower cutter block 26 facing the feeding swing arm 2; the cutter cylinder 20 is fixed on the retraction block 23 and the output shaft of the cutter cylinder 20 is connected to the upper cutter block 25, so that the cutter cylinder 20 can drive the upper cutter block 25 to slide up and down; the wheel groove block 24 is installed on one side of the cutter fixing plate 19 and a wheel groove 241 is provided in the wheel groove block 24. The wheel groove 241 has a vertical section 2411 and an inclined section 2412 which are connected in sequence from top to bottom; a wheel groove bearing 29 which is slidably inserted into the wheel groove 241 is further provided on the upper cutter block 25; when the wheel groove bearing 29 slides in the inclined section 2412, the cutter 12 can be horizontally moved towards the stopper 11, specifically, reciprocally moving from one end face of the fitting fixing plate 1 to the other end face, that is, the cutter 12 is on one side of the stopper 11 in the original state; when the wheel groove bearing 29 slides in the vertical section 2411, the cutter 12 can be moved up and down. Through the above settings, it is convenient to drive the cutter 12 to move by using the cutter driving device. Specifically, during use, the cutter cylinder 20 drives the upper cutter block 25 to move upward, so that the wheel groove bearing 29 slides in the inclined section 2412, causing the retraction block 23 to slide towards the feeding swing arm 2. Since the lower cutter block 26 is installed on the retraction block 23 and the cutter 12 is installed on the lower cutter block 26, the cutter 12 also synchronously moves towards the feeding swing arm 2, so that the cutter 12 can be inserted below the corresponding position of the foam strip 101. Then, when the wheel groove bearing 29 moves to the vertical section 2411 and the wheel groove bearing 29 slides in the vertical section 2411, the upper cutter block 25 hooks the lower hook portion 261 of the lower cutter block 26 through the upper hook portion 251, thereby driving the lower cutter block 26 to move upward, and further causing the cutter 12 to move upward towards the stopper 11 to complete the cutting; when the cutter 12 needs to be reset, the cutter cylinder 20 drives the wheel groove bearing 29 to slide along the vertical section 2411 and the inclined section 2412 in sequence, so that the cutter 12 can first move downward and then move away from the feeding swing arm 2 to disengage from the foam strip 101.

[0047] In this embodiment, the retraction block 23, the wheel groove block 24, and the upper cutter block 25 are all in an L shape, and the upper end of the wheel groove block 24 can limit the upper end of the upper cutter block 25 to prevent the upper cutter block 25 from exceeding the preset stroke.

[0048] In this embodiment, as Figure 4 and Figure 5 shown, the cutting assembly 100 is arranged obliquely from back to front and from top to bottom, so that when the cutter 12 cooperates with the stop block 11 to cut the foam strip 101, it is perpendicular to the corresponding part of the foam strip 101, so that the foam strip 101 can be quickly cut, that is, the cutting effect is better, and it can also prevent the foam strip 101 from sticking to the cutter 12, and the non-adhesive surface of the foam strip 101 will not stick to the stop block 11. Therefore, when the stop block 11 and the cutter 12 move up and down, they actually move obliquely upward.

[0049] The slide rail assembly includes a slide rail and a slide seat. Since the slide rail assembly is a prior art, it will not be specifically described here.

[0050] Combined with Figure 10 and Figure 11 , the working principle of the present invention will be introduced below to understand the present invention:

[0051] (1) First, install a foam strip 101 in the feeding groove 201 and suck the foam strip 101. The front end of the foam strip 101 extends about nine millimeters out of the feeding groove 201, and the end face of the foam strip 101 with adhesiveness faces downward. Then, place a workpiece on the workbench 102. Next, the feeding drive device 3 operates to push the feeding swing arm 2 to swing downward. At the same time, the front end of the feeding swing arm 2 drives the first slider 5 to slide forward, and the foam strip 101 in the feeding groove 201 moves forward synchronously in an arc. After the front end of the foam strip 101 swings under the pressing wheel 42 and stops, the front end of the foam strip 101 is almost in a horizontal state at this time, and the front end of the foam strip 101 also just swings above the position where the workpiece needs to be bonded with the foam strip 101. Then, the pressing drive device 41 drives the pressing wheel 42 to press down, so that the front end of the foam strip 101 is pressed tightly on the workpiece. Then, by using the module to drive the workbench 102 to move away from the feeding swing arm 2, the foam strip 101 can be gradually pressed tightly on the workpiece by the pressing wheel 42. Similarly, the bonding fixing plate 1 can also be driven by the module to slide away from the workbench 102, and in this way, the foam strip 101 can also be pressed tightly on the workpiece. When the foam strip 101 is bonded well, the feeding drive device 3 drives the feeding swing arm 2 to reset, that is, the feeding swing arm 2 swings upward, so that the part of the foam strip 101 that extends out of the feeding block 22 but is not bonded to the workpiece warps upward to leave space for the cutting knife 12 to insert. At the same time, the second slider 6 also slides backward synchronously. At this time, the needle roller bearing 18 also correspondingly transitions from the concave arc surface 17 to the plane 16, so that the second slider 6 presses the stop block 11 to slide downward and approach the foam strip 101, and the spring 15 is compressed.

[0052] (2) At the same time, the cutting knife cylinder 20 drives the upper cutting knife block 25 to move upward. The wheel groove bearing 18 slides in the inclined section 2412, driving the retraction block 23 to slide toward the feeding swing arm 2. Since both the upper cutting knife block 25 and the lower cutting knife block 26 are installed on the retraction block 23, and the cutting knife 12 is installed on the lower cutting knife block 26, the cutting knife 12 will also move horizontally toward the feeding swing arm 2, that is, the cutting knife 12 will move horizontally toward the foam strip 101. When the wheel groove bearing 29 moves to the end in the inclined section 2412, such as Figure 10As shown, the cutting knife 12 is also just inserted under the part of the foam strip 101 that extends out of the front end of the feeding block 22 but is not connected to the workpiece (that is, the cutting knife 12 was originally outside the foam strip 101 before it actuated). At this time, the stopper 11 also corresponds to the cutting knife 12 close to the foam strip 101, and both the cutting knife 12 and the stopper 11 are perpendicular to the position corresponding to the foam strip 101. Immediately afterwards, the wheel groove bearing 29 slides in the vertical section 2411, driving the upper cutting knife block 25 to slide, and the upper hook part 251 hooks the lower hook part 261 to make the lower cutting knife block 26 slide, thereby causing the cutting knife 12 to slide towards the stopper 11. When the cutting knife 12 contacts the stopper 11 (that is, the cutting knife 12 and the stopper 11 close together), the cutting knife 12 can cut off the foam strip 101. Then, the cutting knife cylinder 20 resets to reset the cutting knife 12. Immediately afterwards, the module drives the workbench 102 to slide outwards a certain distance, so that the pressing wheel 26 completely fits the cut foam strip 101 onto the workpiece.

[0053] After the above steps, the foam strip is attached to one side edge on the top surface of the workpiece. If it is necessary to attach a foam strip to all four side edges on the top surface of the workpiece, only one attaching mechanism is needed to attach a foam strip 101 to the four sides of the top surface of the workpiece respectively. Of course, two or four attaching mechanisms of the present invention can also be provided around the workbench 102. For example Figure 11 As shown, four attaching mechanisms of the present invention are provided around the workbench 102. Two parallel attaching mechanisms are used to attach two foam strips 101 to the two side edges parallel to the X-axis on the top surface of the workpiece, and the other two attaching mechanisms are used to attach the other two foam strips 101 to the two side edges parallel to the Y-axis on the top surface of the workpiece.

[0054] In summary, the present invention can attach the strip-shaped foam strip 101 to the top surface of the workpiece. Therefore, during operation, only one foam strip needs to be attached to each of the four side edges on the top surface of the workpiece to form a frame-shaped foam. This attachment method has a high degree of automation and can achieve automatic foam attachment, thus greatly improving the processing efficiency. At the same time, the present invention uses the feeding drive device 41 to drive the feeding swing arm 2 to swing, thereby driving the foam strip 101 to move forward in an arc, which can improve the docking accuracy between adjacent foam strips on the workpiece. The docking gap between two adjacent foam strips 101 attached by the attachment mechanism of the present invention is generally less than 0.2 mm, thus greatly improving the product quality. Moreover, this feeding method using the swing of the feeding swing arm 2 can also complete the feeding without the front end of the foam strip extending too far out of the feeding block 22. Because if the foam strip 101 extends too long, it is easy to cause the foam strip 101 to bend, making it difficult to ensure the docking accuracy between two adjacent foam strips 101 on the top surface of the workpiece. That is, this feeding method further improves the accuracy of the equipment. During the attachment process, the pressure wheel 26 is used to press the foam strip 101 onto the workpiece, which can ensure that the foam strip 101 is not distorted, improve the flatness of the foam strip, and also improve the product quality. At the same time, after the foam strip of the preset length is attached to the workpiece, the feeding swing arm 2 will swing upward, thus leaving space for the cutter 12 in the cutting assembly 100 to be inserted under the foam strip 101 for cutting. The present invention also has the advantages of simple operation and material saving. The advantage of material saving lies in that this method of attaching strip-shaped foam can facilitate the cutting of the foam to a certain extent. Because traditional foam is generally in a frame shape, waste is inevitably caused during the cutting process, while the strip-shaped foam used in the present invention can greatly reduce the waste of the foam.

[0055] The present invention is not limited to the above embodiments. If various modifications or deformations of the present invention do not depart from the spirit and scope of the present invention, and if these modifications and deformations fall within the scope of the claims of the present invention and equivalent technical scope, then the present invention also intends to include these modifications and deformations.

Claims

1. A fitting mechanism for a foam fitting device for a touch screen, characterized in that: It includes a fitting fixed plate, a feeding swing arm, a feeding driving device, a material pressing component, a cutting component, and a first slider and a second slider that cooperate with each other; the feeding driving device is installed on one end face of the fitting fixed plate, and the output shaft of the feeding driving device is hinged to the middle or rear end of the feeding swing arm through the first slider, and the first slider is inclined and slidably installed on the fitting fixed plate through a first slide rail assembly; the second slider is inclined and slidably installed on the fitting fixed plate through a second slide rail assembly, and the second slider is hinged to the front end of the feeding swing arm in a cooperative manner; the feeding driving device can drive the feeding swing arm to swing up and down; a feeding groove extending in the front-rear direction and used for inserting a foam strip is provided on the feeding swing arm; the material pressing component is installed on the fitting fixed plate and the material pressing component is located in front of the feeding swing arm; the cutting component is installed on the fitting fixed plate and is used for cutting the foam strip.

2. The fitting mechanism for a foam fitting device for a touch screen according to claim 1, characterized in that: The material pressing component includes a material pressing driving device installed on the fitting fixed plate and a pressing wheel fixed on the output shaft of the material pressing driving device, and the material pressing driving device can drive the pressing wheel to move up and down.

3. The fitting mechanism for a foam fitting device for a touch screen according to claim 1, characterized in that: The feeding swing arm includes a swing arm and a feeding block installed on the swing arm; the output shaft of the feeding driving device is hinged to the middle or rear end of the swing arm through the first slider, and the second slider is hinged to the front end of the swing arm in a cooperative manner; the feeding groove is arranged on the feeding block.

4. The fitting mechanism for a foam fitting device for a touch screen according to claim 3, characterized in that: The feeding block includes a feeding fixed block connected to the swing arm and an air sealing block connected to the bottom of the feeding fixed block; an extension part extends downward on one side of the bottom of the air sealing block; the feeding block further includes a detachable adjusting block arranged on the other side of the bottom of the air sealing block, and the adjusting block can slide back and forth in the direction of the extension part through the adjustment of an adjusting part; a feeding groove is formed between the adjusting block and the extension part.

5. The fitting mechanism for a foam fitting device for a touch screen according to claim 4, characterized in that: The adjusting part is a bolt; strip-shaped adjusting holes corresponding to each other are respectively provided on the feeding fixed block and the air sealing block, and a locking hole corresponding to the strip-shaped adjusting hole is provided in the adjusting block, and the adjusting part is respectively connected in the strip-shaped adjusting hole and the locking hole.

6. The fitting mechanism for a foam fitting device for a touch screen according to claim 4, characterized in that: The fitting mechanism of the foam fitting device for a touch screen further includes a vacuum suction mechanism; the vacuum suction mechanism includes an air suction channel arranged on the feeding block and having one end communicated with the upper end of the feeding groove; the air suction channel includes a first air suction hole and an air suction cavity that are arranged on the feeding fixed block and communicated with each other, and a second air suction hole arranged on the air sealing block, and the second air suction hole is communicated with the air suction cavity and the feeding groove respectively; the width of the second air suction hole is smaller than the width of the foam strip.

7. The fitting mechanism for a foam fitting device for a touch screen according to claim 1, characterized in that: A top plate is provided on the first slider; two limit plates distributed up and down are further provided on the fitting fixed plate, and one end of the top plate is located between the two limit plates.

8. The fitting mechanism for a foam fitting device for a touch screen according to claim 1, characterized in that: At least one one-way bearing located behind the feeding end of the feeding groove is further installed on the feeding swing arm.

9. The fitting mechanism for a foam fitting device for a touch screen according to claim 2, characterized in that: The cutting assembly includes a stopper and a cutter that cooperate with each other, and a cutter driving device for driving the cutter; the stopper is slidably mounted on one end face of the fitting fixing plate through a third slide rail assembly; a fixing rod is inserted into the stopper and the upper end of the fixing rod is connected to the fitting fixing plate, and a spring sleeved on the fixing rod is further arranged in the stopper; a sliding surface is provided on the bottom surface of the second slider, and the sliding surface includes a plane and a concave arc surface that are sequentially connected from front to back; a needle roller bearing corresponding to and cooperating with the sliding surface is further provided on the end face of the stopper; the cutter is located below the stopper; the cutter is mounted on the cutter driving device and the cutter is located between the feeding groove and the pressing wheel; the cutter driving device can correspondingly drive the cutter to horizontally move and vertically move towards the stopper, and when the cutter moves upward, the cutter can cut the foam strip by cooperating with the stopper.

10. The fitting mechanism for a foam fitting device for a touch screen according to claim 9, characterized in that: The cutter driving device includes a cutter fixing plate, a cutter cylinder, a retraction block, a wheel groove block, an upper cutter block and a lower cutter block; the cutter fixing plate is mounted on the other end face of the fitting fixing plate; the retraction block is horizontally slidably mounted on the bottom of the cutter fixing plate through a fourth slide rail assembly in a reciprocating manner towards the feeding swing arm; the upper cutter block and the lower cutter block are correspondingly mounted on one side of the cutter fixing plate in a slidable manner up and down through a fourth slide rail assembly and cooperate with each other, and a corresponding upper hook portion and a lower hook portion are respectively provided at the lower end of the upper cutter block and the upper end of the lower cutter block, and the cutter is mounted on the side face of the lower cutter block facing the feeding swing arm; the cutter cylinder is fixed on the retraction block and the output shaft of the cutter cylinder is connected to the upper cutter block, so that the cutter cylinder can drive the upper cutter block to slide up and down; the wheel groove block is mounted on one side of the cutter fixing plate and a wheel groove is provided in the wheel groove block, and the wheel groove has a vertical section and an inclined section that are sequentially connected from top to bottom; a wheel groove bearing that is slidably inserted into the wheel groove is further provided on the upper cutter block; when the wheel groove bearing slides in the inclined section, the cutter can be horizontally moved towards the stopper; when the wheel groove bearing slides in the vertical section, the cutter can be vertically moved.

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