Automatic screen pasting machine

Abstract

The utility model provides an automatic screen pasting machine which comprises a rack, a dispensing device and a screen pasting device, the dispensing device comprises a jig seat, a movement control mechanism, a dispensing device and a dispensing control mechanism, the movement control mechanism can control the jig seat to move, the dispensing control mechanism can control the dispensing device to move, a weighing sensor is arranged on the jig seat, and the screen pasting device is arranged on the rack. The screen pasting device comprises a first robot, a supporting plate, a vacuum suction cup, a first camera and a second camera, the supporting plate is installed at the execution end of the first robot, the first robot can control the supporting plate to move and rotate in multiple degrees of freedom, the vacuum suction cup and the first camera are arranged on the supporting plate, a first camera head of the first camera is arranged downwards, and a second camera head of the second camera is arranged downwards. The second camera is arranged on the rack, and a second camera head of the second camera is arranged upwards. The automatic screen pasting machine can accurately and quantitatively dispense glue, and is high in production precision and good in consistency, so that the production quality is improved, and the production efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of automated production equipment technology, and in particular to an automatic screen pasting machine. Background Technology

[0002] To attach the screen to the front cover of a product, the current common method is to use adhesive. Existing screen bonding machines apply adhesive to the bonding surface of the front cover, and then place the screen on that surface, thus bonding the screen to the adhesive.

[0003] However, existing screen bonding machines do not quantitatively control the amount of adhesive applied to the bonding surface of the product's front cover. This results in different amounts of adhesive applied to the bonding surface of different products' front covers, affecting production consistency and precision. Furthermore, when the amount of adhesive applied to the bonding surface of the product's front cover is insufficient, it affects the firmness of the screen adhesive on the bonding surface of the product's front cover. When the amount of adhesive applied to the bonding surface of the product's front cover is excessive, adhesive overflow occurs after the screen adhesive is applied to the bonding surface of the product's front cover, thus affecting production quality and efficiency. Summary of the Invention

[0004] To achieve the main objective of this utility model, it provides an automatic screen bonding machine capable of precise quantitative dispensing, high production accuracy, and good consistency, thereby improving production quality and, consequently, production efficiency.

[0005] To achieve the main objective of this utility model, an automatic screen bonding machine is provided, comprising a frame, a dispensing device, and a screen bonding device. The dispensing device includes a fixture, a movement control mechanism, a dispensing device, and a dispensing control mechanism. The movement control mechanism and the dispensing control mechanism are respectively mounted on the frame. The movement control mechanism can control the fixture to move in the X-axis direction, and the dispensing device is located above the fixture in the Z-axis direction. The dispensing control mechanism can control the dispensing device to move in the Z-axis and Y-axis directions respectively. The fixture is used to place the product front cover and is equipped with a weighing sensor. The screen bonding device includes a first robot, a support plate, a vacuum suction cup, a first camera, and a second camera. The support plate is mounted on the execution end of the first robot, and the first robot can control the support plate to move and rotate in multiple degrees of freedom. The vacuum suction cup is mounted on the support plate and is used to adsorb the screen. The first camera is mounted on the support plate, and the first camera of the first camera is positioned downwards in the Z-axis direction. The second camera is mounted on the frame, and the second camera of the second camera is positioned upwards in the Z-axis direction.

[0006] As can be seen from the above scheme, when the automatic screen bonding machine of this utility model is working, the front cover of the product is placed on the fixture. Then, the motion control mechanism controls the fixture to move the front cover of the product in the X-axis direction, while the dispensing control mechanism controls the dispensing device to move in the Z-axis and Y-axis directions respectively, thereby controlling the dispensing device to perform automated dispensing operation on the bonding surface of the front cover of the product on the fixture. Since a weighing sensor is set on the fixture, before dispensing, the weighing sensor can detect the first weight of the front cover of the product placed on the fixture that has not yet been dispensed. After dispensing, the weighing sensor can detect the second weight of the front cover of the product placed on the fixture that has been dispensed. The second weight is compared with the first weight to obtain the weight difference. This weight difference is the amount of glue applied to the front cover of the product. When it is determined that the weight difference is within the set glue amount range, it indicates that the dispensing operation of the front cover of the product is qualified, and the first robot control support plate of the screen bonding device then moves... The robot moves and rotates in multiple degrees of freedom, allowing the support plate to move the first camera and vacuum suction cup to the material position on the screen. The vacuum suction cup then adsorbs the screen at the material position on the screen. Next, the first robot controls the support plate to move and rotate the screen in multiple degrees of freedom, allowing the second camera to detect at least two corner positions of the screen adsorbed by the vacuum suction cup. Then, the support plate is controlled to move the vacuum suction cup and screen to above the product front cover on the fixture. The first camera on the support plate then detects at least two corresponding corner positions of the product front cover on the fixture. Based on the at least two corner position information of the screen adsorbed by the vacuum suction cup obtained by the second camera and the at least two corresponding corner position information of the product front cover on the fixture obtained by the first camera, the screen adsorbed by the vacuum suction cup is precisely placed and bonded to the adhesive surface of the product front cover on the fixture, thereby automatically and precisely bonding the screen to the product front cover.

[0007] This utility model of an automatic screen applicator is equipped with a weighing sensor on a fixture. Before dispensing, the weighing sensor can detect the first weight of the product front cover placed on the fixture before dispensing. After dispensing, the weighing sensor can detect the second weight of the product front cover placed on the fixture after dispensing. The second weight is compared with the first weight to obtain the weight difference. This weight difference is the amount of glue applied to the product front cover. When the weight difference is determined to be within the set glue amount range, it indicates that the dispensing operation of the product front cover is qualified, thereby achieving the purpose of precise quantitative dispensing and improving production accuracy and consistency. Furthermore, the automatic screen-attaching machine of this utility model is equipped with a first camera and a second camera. The second camera detects at least two corner positions of the screen adsorbed by the vacuum suction cup, and the first camera detects at least two corresponding corner positions of the product front cover on the fixture. Based on the precise matching of the at least two corner position information of the screen adsorbed by the vacuum suction cup obtained by the second camera with the at least two corresponding corner position information of the product front cover on the fixture obtained by the first camera, the screen adsorbed by the vacuum suction cup is accurately placed and bonded to the adhesive surface of the product front cover on the fixture, thereby improving production precision, consistency and production quality, and thus improving production efficiency.

[0008] Therefore, the automatic screen applicator of this invention can accurately dispense adhesive in precise quantities, resulting in high production precision and good consistency, thereby improving production quality and thus production efficiency.

[0009] A further embodiment is that the dispensing device includes a mounting base, a dispensing head, a valve push rod, a dispensing pushing mechanism, a glue cartridge, a supply rod, and a glue supply mechanism. The dispensing control mechanism can control the mounting base to move in the Z-axis and Y-axis directions respectively. The dispensing head is mounted on the mounting base, and the upper end of the dispensing head is provided with a push port and a supply port, while the lower end of the dispensing head is provided with a glue outlet. The glue outlet and the push port are positioned opposite each other in the Z-axis direction. The glue cartridge is mounted on the mounting base and connected to the supply port through a delivery pipe. The supply rod is movably mounted inside the glue cartridge. The glue supply mechanism is mounted on the mounting base and can control the supply rod to move toward the delivery pipe. The valve push rod is movably located inside the push port, and the dispensing pushing mechanism can control the valve push rod to move in the Z-axis direction.

[0010] A further embodiment includes a clamping plate and a locking bolt. The mounting base has a first groove, one end of the clamping plate is rotatably hinged to the mounting base, and the side of the clamping plate adjacent to the mounting base has a second groove. The second groove and the first groove can form a clamping groove. The clamping groove is inclined relative to the horizontal direction. The delivery pipe is located in the clamping groove. The clamping plate has a threaded hole through it. The threaded rod of the locking bolt is threadedly engaged with the threaded hole and presses against the delivery pipe.

[0011] A further option is to provide a limiting post protruding from the side of the mounting base adjacent to the clamping plate, and to provide a limiting groove on the side of the clamping plate adjacent to the mounting base, into which the limiting post can be inserted.

[0012] A further option is to provide a positioning seat on the mounting base, which is located directly above the push port in the Z-axis direction, and the positioning seat has a positioning hole through it in the Z-axis direction. The valve push rod can be moved through the positioning hole in the Z-axis direction, and the dispensing push mechanism is provided on the positioning seat.

[0013] A further solution is to have a slide rail on the mounting base that extends in the Z-axis direction, and a slider on the positioning base that can move in the Z-axis direction to fit the slide rail. The upper end of the positioning base is provided with two clamping plates, which are located on both sides of the slide rail. The locking screw is threadedly connected to the two clamping plates to clamp the two clamping plates on the slide rail.

[0014] A further embodiment is that the glue supply mechanism includes a supply motor, a drive wheel, a driven wheel, a timing belt, a supply screw, and a supply nut. The drive wheel is sleeved on the drive shaft of the supply motor, the driven wheel is sleeved on the supply screw, the supply screw extends in the direction of movement of the supply rod, the timing belt is sleeved between the drive wheel and the driven wheel, the supply nut is movably sleeved on the supply screw in the direction of movement of the supply rod, and the linkage rod on the supply nut is inserted into the glue cylinder and connected to the supply rod; and / or, the glue dispensing mechanism is a push cylinder.

[0015] A further embodiment is that the motion control mechanism includes a motion motor, a motion lead screw, and a motion nut. The motion lead screw extends in the X-axis direction, the motion motor can control the motion lead screw to rotate around the X-axis direction, the motion nut can be movably sleeved on the motion lead screw in the X-axis direction, and the fixture seat is set on the motion nut.

[0016] A further option is to have multiple vacuum suction cups, and a support plate with multiple waist-shaped grooves. The multiple waist-shaped grooves are distributed circumferentially around the execution end of the first robot. Each waist-shaped groove extends radially away from the execution end of the first robot. A mounting rod on a vacuum suction cup passes through a waist-shaped groove. Multiple nuts are threaded onto a mounting rod. The multiple nuts on a mounting rod abut against the opposite end faces of the support plate.

[0017] A further embodiment is that the automatic screen attaching machine also includes a loading and unloading device, which includes a second robot, a support base, a gripping control mechanism, and at least two grippers. The support base is mounted on the execution end of the second robot, and the second robot can control the support base to move and rotate in multiple degrees of freedom. The gripping control mechanism is set on the support base and can control the multiple grippers to move toward or away from each other. Each gripper has an elastic clamp at its free end away from the support base, and the multiple elastic clamps form a gripping area for holding the product. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of an embodiment of the automatic screen applicator of this utility model.

[0019] Figure 2 This is a second-view structural diagram of an embodiment of the automatic screen applicator of this utility model.

[0020] Figure 3 This is a first-view structural diagram of the dispensing device in an embodiment of the automatic screen bonding machine of this utility model.

[0021] Figure 4 This is a second-view structural diagram of the dispensing device in an embodiment of the automatic screen bonding machine of this utility model.

[0022] Figure 5 This is a third-view structural diagram of the dispensing device in an embodiment of the automatic screen bonding machine of this utility model.

[0023] Figure 6 This is a partial exploded view of the dispensing device in an embodiment of the automatic screen bonding machine of this utility model.

[0024] Figure 7 This is a partial structural diagram of the dispensing device in an embodiment of the automatic screen bonding machine of this utility model.

[0025] Figure 8 This is a structural diagram of the moving control mechanism in an embodiment of the automatic screen applicator of this utility model.

[0026] Figure 9 This is a first-view structural diagram of the screen-applying device in an embodiment of the automatic screen-applying machine of this utility model.

[0027] Figure 10 This is a second-view structural diagram of the screen-applying device in an embodiment of the automatic screen-applying machine of this utility model.

[0028] Figure 11 This is a structural diagram of the support plate and vacuum suction cup working together in an embodiment of the automatic screen applicator of this utility model.

[0029] Figure 12 This is a structural diagram of the loading and unloading device in an embodiment of the automatic screen pasting machine of this utility model.

[0030] Figure 13 This is a partial structural diagram of the loading and unloading device in an embodiment of the automatic screen pasting machine of this utility model.

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0032] See Figures 1 to 11This embodiment discloses an automatic screen bonding machine 10, including a frame 11, a dispensing device 12, and a screen bonding device 13. The dispensing device 12 includes a fixture 121, a movement control mechanism, a dispensing device, and a dispensing control mechanism 122. The movement control mechanism and the dispensing control mechanism 122 are respectively disposed on the frame 11. The movement control mechanism can control the fixture 121 to move in the X-axis direction. The dispensing device is located above the fixture 121 in the Z-axis direction. The dispensing control mechanism 122 can control the dispensing device to move in the Z-axis direction and the Y-axis direction, respectively. The fixture 121 is used to place the front cover of the product, and a weighing sensor is provided on the fixture 121. Furthermore, the automatic screen bonding machine 10 in this embodiment also includes a screen bonding device 13, which includes a first robot 131, a support plate 132, a vacuum suction cup 135, a first camera 133, and a second camera 134. The support plate 132 is mounted on the execution end of the first robot 131, and the first robot 131 can control the support plate 132 to move and rotate in multiple degrees of freedom. The vacuum suction cup 135 is disposed on the support plate 132 and is used to adsorb the screen. The first camera 133 is disposed on the support plate 132, and the first camera of the first camera 133 is positioned downward in the Z-axis direction. The second camera 134 is disposed on the frame 11, and the second camera of the second camera 134 is positioned upward in the Z-axis direction.

[0033] In this embodiment, when the automatic screen bonding machine 10 is working, the product front cover is placed on the fixture base 121. Then, the motion control mechanism controls the fixture base 121 to move the product front cover in the X-axis direction. At the same time, the dispensing control mechanism 122 controls the dispensing device to move in the Z-axis and Y-axis directions respectively, thereby controlling the dispensing device to perform automated dispensing operation on the bonding surface of the product front cover on the fixture base 121. Since a weighing sensor is provided on the fixture base 121, before dispensing, the weighing sensor can detect the weight of the product front cover placed on the fixture base 121. The first weight of the product front cover before glue application is measured. After glue application, the weighing sensor can detect the second weight of the product front cover placed on the fixture seat 121 after glue application. The second weight is compared with the first weight to obtain the weight difference. This weight difference is the amount of glue applied to the product front cover. When the weight difference is determined to be within the set glue amount range, it indicates that the glue application operation of the product front cover is qualified. Then, the first robot 131 of the screen bonding device 13 controls the support plate 132 to move and rotate in multiple degrees of freedom, so that the support plate 132... 32 moves the first camera 133 and vacuum suction cup 135 to the material position on the screen, so that the vacuum suction cup 135 adsorbs the screen at the material position on the screen. Then, the first robot 131 controls the support plate 132 to move and rotate the screen in multiple degrees of freedom, so that the second camera 134 can detect at least two corner positions of the screen adsorbed by the vacuum suction cup 135. Then, the support plate 132 is controlled to move the vacuum suction cup 135 and the screen to above the product front cover on the fixture seat 121. Then the first camera on the support plate 132... 133 detects at least two corner positions corresponding to the front cover of the product on the fixture 121. Based on the information of at least two corner positions of the screen adsorbed by the vacuum suction cup 135 obtained by the second camera 134, it accurately matches the information of at least two corner positions corresponding to the front cover of the product on the fixture 121 obtained by the first camera 133, so that the screen adsorbed by the vacuum suction cup 135 is accurately placed and bonded to the adhesive surface of the front cover of the product on the fixture 121, thereby automatically and accurately bonding the screen to the front cover of the product.

[0034] In this embodiment, the automatic screen bonding machine 10 is equipped with a weighing sensor on the fixture seat 121. Before dispensing, the weighing sensor can detect the first weight of the product front cover placed on the fixture seat 121 before dispensing. After dispensing, the weighing sensor can detect the second weight of the product front cover placed on the fixture seat 121 after dispensing. The second weight is compared with the first weight to obtain the weight difference. This weight difference is the amount of glue applied to the product front cover. When it is determined that the weight difference is within the set glue amount range, it indicates that the dispensing operation of the product front cover is qualified, thereby achieving the purpose of precise quantitative dispensing and improving production accuracy and consistency. Furthermore, in this embodiment, the automatic screen bonding machine 10 has a screen bonding device 13 equipped with a first camera 133 and a second camera 134. The second camera 134 detects at least two corner positions of the screen adsorbed by the vacuum suction cup 135, and the first camera 133 detects at least two corner positions corresponding to the product front cover on the fixture seat 121. Based on the at least two corner position information of the screen adsorbed by the vacuum suction cup 135 obtained by the second camera 134 and the at least two corner position information of the product front cover on the fixture seat 121 obtained by the first camera 133, the screen adsorbed by the vacuum suction cup 135 is accurately placed and bonded to the adhesive surface of the product front cover on the fixture seat 121, thereby improving production precision, consistency and production quality, and thus improving production efficiency.

[0035] Therefore, the automatic screen applicator 10 in this embodiment can accurately dispense adhesive, achieving high production precision and good consistency, thereby improving production quality and thus increasing production efficiency.

[0036] To improve the accuracy of dispensing operations, the dispensing device in this embodiment includes a mounting base 123, a dispensing head 124, a valve push rod 1261, a dispensing pushing mechanism, a glue cartridge 125, a supply rod, and a glue supply mechanism. The dispensing control mechanism 122 can control the mounting base 123 to move in the Z-axis and Y-axis directions respectively. The dispensing head 124 is mounted on the mounting base 123, and the upper end of the dispensing head 124 is provided with a push port 1242 and a supply port 1243, while the lower end of the dispensing head 124 is provided with a dispensing outlet 1. 241. The glue outlet 1241 and the push port 1242 are arranged opposite each other in the Z-axis direction. The glue cylinder 125 is mounted on the mounting base 123 and connected to the supply port 1243 through the delivery pipe 1251. The supply rod is movably mounted inside the glue cylinder 125. The glue supply mechanism is mounted on the mounting base 123 and can control the supply rod to move towards the delivery pipe 1251. The valve push rod 1261 is movably located inside the push port 1242. The glue dispensing and pushing mechanism can control the valve push rod 1261 to move in the Z-axis direction. Specifically, in this embodiment, the glue dispensing and pushing mechanism is a push cylinder 126.

[0037] Therefore, the glue supply mechanism controls the supply rod to move toward the delivery pipe 1251 to supply the glue in the glue cylinder 125 to the delivery pipe 1251 and the glue in the delivery pipe 1251 to the dispensing head 124. At the same time, the dispensing push mechanism controls the valve push rod 1261 to move downward in the Z-axis direction. The valve push rod 1261 then pushes the glue in the dispensing head 124 out of the dispensing port 1241 to perform the dispensing operation. When the dispensing push mechanism controls the valve push rod 1261 to move upward in the Z-axis direction, the dispensing port 1241 of the dispensing head 124 stops the dispensing operation, thereby improving the accuracy and stability of the dispensing operation.

[0038] To facilitate the disassembly and cleaning of the delivery pipe 1251 and ensure its positional stability to improve the stability and reliability of the adhesive delivery, the dispensing device in this embodiment also includes a clamping plate 127 and a locking bolt 128. The mounting base 123 has a first groove. One end of the clamping plate 127 is rotatably hinged to the mounting base 123, and the side of the clamping plate 127 adjacent to the mounting base 123 has a second groove 1271. The second groove 1271 and the first groove can form a clamping groove. The clamping groove is inclined relative to the horizontal direction. The delivery pipe 1251 is located in the clamping groove. The clamping plate 127 has a threaded hole 1273. The threaded rod of the locking bolt 128 is threadedly engaged with the threaded hole 1273 and presses against the delivery pipe 1251, thereby firmly installing the delivery pipe 1251 in the clamping groove formed by the second groove 1271 and the first groove. Specifically, in this embodiment, the side of the mounting base 123 adjacent to the clamping plate 127 is provided with a limiting post 1233, and the side of the clamping plate 127 adjacent to the mounting base 123 is provided with a limiting groove 7272. The limiting post 1233 can be inserted into the limiting groove 7272, which can improve the assembly accuracy between the clamping plate 127 and the mounting base 123.

[0039] To improve the working stability and reliability of the valve push rod 1261, a positioning seat 129 is provided on the mounting base 123 in this embodiment. The positioning seat 129 is located directly above the push port 1242 in the Z-axis direction, and a positioning hole is provided through the positioning seat 129 in the Z-axis direction. The valve push rod 1261 can be moved through the positioning hole in the Z-axis direction. The glue dispensing and pushing mechanism is provided on the positioning seat 129.

[0040] Specifically, in this embodiment, the mounting base 123 is provided with a slide rail 1231, which extends in the Z-axis direction. The positioning base 129 is provided with a slider 1291, which can be moved in the Z-axis direction to adapt to the slide rail 1231. The upper end of the positioning base 129 is provided with two clamping plates 1292, which are located on both sides of the slide rail 1231. The locking screw 1210 is threadedly connected to the two clamping plates 1292 to lock the two clamping plates 1292. 2. The clamp is held on the slide rail 1231, so that the adjustable locking screw 1210 can loosen the two clamps 1292 from the slide rail 1231. Then, the slider 1291 on the positioning seat 129 can be controlled to move along the Z-axis direction on the slide rail 1231 to adjust the position of the valve push rod 1261 set on the positioning seat 129 in the Z-axis direction, and then adjust the amount of glue that is pressed out of the glue outlet 1241 from the glue outlet 1241 by the downward movement of the valve push rod 1261.

[0041] Furthermore, the glue supply mechanism in this embodiment includes a supply motor 1211, a drive wheel 1212, a driven wheel 1213, a timing belt 1214, a supply screw 1215, and a supply nut 1216. The drive wheel 1212 is sleeved on the drive shaft of the supply motor 1211, and the driven wheel 1213 is sleeved on the supply screw 1215. The supply screw 1215 extends in the moving direction of the supply rod. The timing belt 1214 is sleeved between the drive wheel 1212 and the driven wheel 1213. The supply nut 1216 is movably sleeved on the supply screw 1215 in the moving direction of the supply rod. The linkage rod on the supply nut 1216 is inserted into the glue cylinder 125 and connected to the supply rod, thereby improving the stability and reliability of the glue supply.

[0042] To improve the movement stability and reliability of the fixture seat 121, the movement control mechanism in this embodiment includes a movement motor 1219, a movement lead screw 1217, and a movement nut 1218. The movement lead screw 1217 extends in the X-axis direction, the movement motor 1219 can control the movement lead screw 1217 to rotate around the X-axis direction, and the movement nut 1218 can be movably sleeved on the movement lead screw 1217 in the X-axis direction. The fixture seat 121 is disposed on the movement nut 1218.

[0043] Furthermore, in this embodiment, there are multiple vacuum suction cups 135, and the support plate 132 has multiple waist-shaped grooves 1321. These grooves are distributed circumferentially around the execution end of the first robot 131, and each groove extends radially away from the execution end of the first robot 131. A mounting rod 1351 on one vacuum suction cup 135 passes through one waist-shaped groove 1321, and multiple nuts 1352 are threaded onto the mounting rod 1351. These nuts 1352 abut against opposite end faces of the support plate 132. The waist-shaped grooves 1321 allow for adjustment of the position of the vacuum suction cup 135 on the support plate 132.

[0044] See Figure 12 and Figure 13 In this embodiment, the automatic screen attaching machine 10 also includes a loading and unloading device 14. The loading and unloading device 14 includes a second robot 141, a support base 142, a gripping control mechanism 143, and at least two grippers 144. The support base 142 is mounted on the execution end of the second robot 141. The second robot 141 can control the support base 142 to move and rotate in multiple degrees of freedom. The gripping control mechanism 143 is mounted on the support base 142 and can control the multiple grippers 144 to move toward or away from each other. Each gripper 144 has an elastic gripper 145 at its free end away from the support base 142. The multiple elastic grippers 145 form a gripping area for holding the product. Thus, the multiple elastic grippers 145 can hold the product front cover for automated loading and unloading operations, improve the degree of automation, and increase production efficiency. Moreover, the elastic grippers 145 will not damage the gripped product, thereby improving production quality.

[0045] The above embodiments are merely preferred examples of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles of this utility model patent application should be included within the scope of this utility model patent application.

Claims

1. An automatic screen bonding machine, comprising a frame and a dispensing device, wherein the dispensing device includes a fixture base, a movement control mechanism, a dispensing device, and a dispensing control mechanism, wherein the movement control mechanism and the dispensing control mechanism are respectively disposed on the frame, characterized in that: The movement control mechanism can control the fixture to move in the X-axis direction, the dispensing device is located above the fixture in the Z-axis direction, the dispensing control mechanism can control the dispensing device to move in the Z-axis direction and the Y-axis direction respectively, the fixture is used to place the product front cover, and a weighing sensor is provided on the fixture. The automatic screen bonding machine also includes a screen bonding device, which includes a first robot, a support plate, a vacuum suction cup, a first camera, and a second camera. The support plate is mounted on the execution end of the first robot, and the first robot can control the support plate to move and rotate in multiple degrees of freedom. The vacuum suction cup is set on the support plate and is used to adsorb the screen. The first camera is set on the support plate, and the first camera of the first camera is set downward in the Z-axis direction. The second camera is set on the frame, and the second camera of the second camera is set upward in the Z-axis direction.

2. The automatic screen bonding machine according to claim 1, characterized in that: The dispensing device includes a mounting base, a dispensing head, a valve push rod, a dispensing pushing mechanism, a glue cylinder, a supply rod, and a glue supply mechanism. The dispensing control mechanism can control the mounting base to move in the Z-axis direction and the Y-axis direction respectively. The dispensing head is mounted on the mounting base, and the upper end of the dispensing head is provided with a push port and a supply port, and the lower end of the dispensing head is provided with a dispensing port. The dispensing port and the push port are arranged opposite to each other in the Z-axis direction. The glue cylinder is mounted on the mounting base and connected to the supply port via a delivery pipe. The supply rod is movably mounted inside the glue cylinder. The glue supply mechanism is mounted on the mounting base and can control the supply rod to move toward the delivery pipe. The valve push rod is movably located inside the push port. The glue dispensing push mechanism can control the valve push rod to move in the Z-axis direction.

3. The automatic screen-applying machine according to claim 2, characterized in that: The dispensing device also includes a clamping plate and a locking bolt. The mounting base has a first groove. One end of the clamping plate is rotatably hinged to the mounting base. The side of the clamping plate adjacent to the mounting base has a second groove. The second groove and the first groove can form a clamping groove. The clamping groove is inclined relative to the horizontal direction. The delivery pipe is located in the clamping groove. The clamping plate has a threaded hole through it, and the threaded rod of the locking bolt is threadedly engaged with the threaded hole and presses against the conveying pipe.

4. The automatic screen-applying machine according to claim 3, characterized in that: The mounting base has a protruding limiting post on its side adjacent to the clamping plate, and the clamping plate has a limiting groove on its side adjacent to the mounting base, into which the limiting post can be inserted.

5. The automatic screen-applying machine according to claim 2, characterized in that: The mounting base is provided with a positioning seat, which is located directly above the push port in the Z-axis direction, and the positioning seat has a positioning hole through it in the Z-axis direction. The valve push rod can be moved through the positioning hole in the Z-axis direction, and the glue dispensing mechanism is provided on the positioning seat.

6. The automatic screen-applying machine according to claim 5, characterized in that: The mounting base is provided with a slide rail that extends in the Z-axis direction. The positioning base is provided with a slider that can be moved in the Z-axis direction to fit the slide rail. The upper end of the positioning base is provided with two clamping plates, which are located on both sides of the slide rail. A locking screw is threadedly connected to the two clamping plates to clamp the two clamping plates on the slide rail.

7. The automatic screen bonding machine according to claim 2, characterized in that: The glue supply mechanism includes a supply motor, a drive wheel, a driven wheel, a timing belt, a supply screw, and a supply nut. The drive wheel is sleeved on the drive shaft of the supply motor, the driven wheel is sleeved on the supply screw, the supply screw extends in the direction of movement of the supply rod, the timing belt is sleeved between the drive wheel and the driven wheel, and the supply nut is movably sleeved on the supply screw in the direction of movement of the supply rod. The linkage rod on the supply nut is inserted into the glue cylinder and connected to the supply rod. And / or, the dispensing mechanism is a dispensing cylinder.

8. The automatic screen bonding machine according to claim 1, characterized in that: The motion control mechanism includes a motion motor, a motion lead screw, and a motion nut. The motion lead screw extends in the X-axis direction, and the motion motor can control the motion lead screw to rotate around the X-axis direction. The motion nut can be movably sleeved on the motion lead screw in the X-axis direction, and the fixture seat is disposed on the motion nut.

9. The automatic screen bonding machine according to claim 1, characterized in that: The number of vacuum suction cups is multiple, and the support plate has multiple waist-shaped grooves. The multiple waist-shaped grooves are distributed circumferentially around the execution end of the first robot. Each waist-shaped groove extends radially away from the execution end of the first robot. A mounting rod on a vacuum suction cup passes through a waist-shaped groove. Multiple nuts are threaded onto a mounting rod. The multiple nuts on a mounting rod abut against the opposite end faces of the support plate.

10. The automatic screen-applying machine according to any one of claims 1 to 9, characterized in that: The automatic screen attaching machine also includes a loading and unloading device, which includes a second robot, a support base, a gripping control mechanism, and at least two grippers. The support base is mounted on the execution end of the second robot, and the second robot can control the support base to move and rotate in multiple degrees of freedom. The gripping control mechanism is disposed on the support base and can control the multiple grippers to move toward or away from each other. Each gripper has an elastic clamp at its free end away from the support base, and the multiple elastic clamps form a gripping area for holding the product.

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