Screen assembly inverted mold closing mechanism, mold closing method, and screen assembly line

Abstract

The present application relates to a kind of screen assembly inversion die closing mechanism, die closing method and screen assembly line.It solves the technical problem of unreasonable existing screen assembly design.The screen assembly inversion die closing mechanism includes: positioning carrier, including detachably arranged upper die and lower die, the two sides of the lower die are rotatably provided with limiting arm to force to keep die closing state;Conveying assembly, including two interval settings and respectively for single upper die and lower die pass through conveying flow channel, the lifting structure for respectively lifting the upper die and lower die is arranged in the conveying flow channel;Die closing assembly, including the conveying frame arranged above the conveying flow channel, the conveying frame is sequentially provided with die opening structure, turnover structure and buckling structure.The present application has the advantages that: using fully automated mode improves work efficiency, and using inversion die closing mode reduces the die closing difficulty of upper die and lower die, improves overall applicability, improves the stability of die opening.

Description

Technical Field

[0001] This invention belongs to the field of automated assembly and relates to a screen assembly inverted mold closing mechanism, a mold closing method, and a screen assembly line. Background Technology

[0002] For example, Chinese patent document discloses a screen assembly device [202210472332.4], in which the transmission path extends along a first direction, and a carrier fastening module, a carrier flipping module, and an assembly module are sequentially arranged along the transmission path. The first carrier is used to carry the display screen and is configured to move along the transmission path; the second carrier is used to carry the outer shell and is configured to move along the transmission path; the carrier fastening module is used to fasten the first carrier to the second carrier so that the display screen is fastened to the outer shell; the carrier flipping module is used to drive the first carrier to rotate so that the display screen is tilted relative to the outer shell; the fastening member is used to install the buckle in the fastening position; and the assembly module is configured to press the first carrier and the second carrier together.

[0003] The shortcomings of the above technical solutions are: the positioning carrier has a different structure and function, which cannot be applied to the product injection requirements. At the same time, the automation level is poor from the delivery to the mold closing process, the product is easily damaged by contact, the positioning carrier has a lot of hard contact, which reduces its service life. Moreover, the existing injection molds are all manual or semi-automatic in terms of product loading and mold closing, which results in low work efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a screen assembly inverted mold closing mechanism, a mold closing method, and a screen assembly line.

[0005] The objective of this invention can be achieved through the following technical solutions: The screen assembly inverted mold-closing mechanism includes: The positioning carrier includes a detachable upper mold and a lower mold, wherein the lower mold is rotatably provided with limiting arms on both sides to force it to remain in a closed state; The conveying assembly includes two spaced-apart conveying channels for the passage of a single upper and lower die, respectively, and the conveying channels are provided with lifting structures that respectively lift the upper and lower dies; The mold closing assembly includes a conveyor frame disposed above the conveying channel. The conveyor frame is sequentially provided with an opening structure for opening the lower mold, a flipping structure for flipping the lower mold, and a fastening structure for closing the upper mold and the lower mold.

[0006] Furthermore, the upper mold and the lower mold are connected by a plug-in structure, the hinge end of the limiting arm is provided with a rotation angle self-limiting structure, and the end of the limiting arm away from the lower mold is provided with a limiting block that can abut against the upper mold in the opposite direction.

[0007] Furthermore, the upper mold has a limiting groove spaced apart on the side of the upper mold away from the lower mold, and the limiting block has a plurality of elastic parts spaced apart that can be elastically engaged in the limiting groove.

[0008] Furthermore, the mold opening structure includes a mold opening driver disposed above the conveying channel, the output end of the mold opening driver is provided with a mold opening force block, one end of the mold opening force block is provided with a lateral abutment slope, and the bottom of the mold opening force block is provided with a bottom abutment slope.

[0009] Furthermore, the conveyor frame is provided with a horizontal drive module, and the drive end of the horizontal drive module is provided with a vertical drive module. The flipping structure and the fastening structure are both provided at the output end of the vertical drive module.

[0010] Furthermore, the flipping structure includes a clamping driver disposed on the conveyor frame, the clamping driver driving a clamping plate that moves in opposite directions, a flipping gripper located at both ends of the positioning carrier and rotatably disposed on the clamping plate, the flipping gripper being connected to a rotary driver and having clamping positioning pins and inclined positioning grippers spaced apart on the flipping gripper, and inclined positioning frames for the limiting arm to open and rest on both sides of the conveying channel.

[0011] Furthermore, the fastening structure includes a fastening driver disposed on the conveyor frame, the fastening driver driving fastening arms disposed on opposite sides to move, and the fastening arms being provided with rollers acting on the limiting arm.

[0012] Furthermore, the lifting structure includes a lifting driver disposed at the bottom of the conveying channel, the lifting driver driving a lifting plate, the lifting plate having a carrier positioning structure and axial limiting structures spaced apart at both ends of the lifting plate.

[0013] The present invention also provides a mold closing method for a screen assembly inverted mold closing mechanism, the steps of which are as follows: S1, place the product on the upper mold, the conveying channel transports the upper mold and lower mold to the set position, and the lifting structure lifts the upper mold and lower mold to the set position; S2, through the mold opening structure acting on the limiting arm, unlocks the lower mold in the locked state, and through the flipping structure, synchronously positions and clamps the lower mold and the limiting arm, and performs overall flipping; S3: Move the lower mold, which has been flipped in S2, above the upper mold, and lower it to complete the initial mold closing. S4, the flipping structure disengages from the lower mold, and the upper mold and lower mold are locked together by the snap-fit ​​structure to complete the final mold closing. The lifting structure lowers the positioning carrier of the mold closing to the conveying channel to continue the conveying.

[0014] The present invention also provides a screen assembly line having the screen assembly inverted mold closing mechanism as described above.

[0015] Compared with existing technologies, this screen assembly inverted mold-closing mechanism has the following advantages: 1. An inverted mold-closing method was adopted, which solved the product positioning reliability problem when the original upper mold moved and reduced the product positioning difficulty. At the same time, the upper mold was embedded into the lower mold and then locked and fastened, which was changed to the lower mold being inverted and surrounding the upper mold and then locked and fastened. The upper mold remained stationary, and the main driving part was applied to the lower mold structure, which reduced the space occupied by the mold-closing components, avoided driving movement interference in the driving components, and reduced the mold-closing difficulty between the upper mold and the lower mold. 2. The self-locking positioning carrier is adopted, which reduces the difficulty of product positioning, provides a pressure holding function for the positioning carrier during glue injection, and improves the overall applicability when used with the mold closing assembly; 3. The mold opening structure moves the initial force point of the mold opening force block and the elastic arm to the middle position of the mold opening force block, making the force more balanced and stable. It reduces the wear of the mold opening components during the mold opening process, avoids the problem of the lower mold shaking due to the instantaneous loss of control of the limit arm during unlocking, and improves the stability of mold opening. 4. This mold-closing method adopts a fully automated process of product loading, mold opening, flipping, and inverted snap-fitting, eliminating manual operation, standardizing the operation of each station, and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a screen assembly inverted mold closing mechanism provided by the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the positioning carrier of the screen assembly inverted mold closing mechanism.

[0018] Figure 3 for Figure 1 A schematic diagram of the bottom surface of the positioning carrier of the screen assembly inverted mold closing mechanism.

[0019] Figure 4 for Figure 1 The positioning carrier profile of the screen assembly inverted mold closing mechanism Figure 1 .

[0020] Figure 5 for Figure 1 The positioning carrier profile of the screen assembly inverted mold closing mechanism Figure 2 .

[0021] Figure 6 for Figure 1 A schematic diagram of the lifting structure of the screen assembly inverted mold closing mechanism.

[0022] Figure 7 for Figure 1 A schematic diagram of the mold-closing components of the screen assembly inverted mold-closing mechanism.

[0023] Figure 8 for Figure 1 A schematic diagram of the mold opening structure of the screen assembly inverted mold closing mechanism.

[0024] Figure 9 for Figure 1 A schematic diagram of the flipping structure of the screen assembly inverted mold closing mechanism.

[0025] Figure 10 for Figure 1 A schematic diagram of the snap-fit ​​structure of the screen assembly inverted mold-closing mechanism.

[0026] In the diagram, 10 is the positioning carrier; 11 is the upper mold; 111 is the cavity; 112 is the injection hole; 12 is the lower mold; 13 is the limiting arm; 14 is the plug-in structure; 141 is the positioning post; 142 is the positioning hole; 15 is the rotation angle self-limiting structure; 151 is the abutment surface; 152 is the rotation clearance arc surface; 16 is the limiting block; 17 is the limiting groove; 18 is the elastic part; 181 is the mounting blind hole; 182 is the pressure holding spring; 183 is the spherical part; 19 is the rotation clearance notch; 20 is the conveying assembly; 21 is the conveying channel; 22 is the lifting structure; 221 is the lifting driver; 222 is the lifting plate; 223 is the carrier positioning structure; 23 is the axial limiting structure; 231 is the front limiting post; 232 is the front limiting block. 233. Elastic component; 234. Rear limit actuator; 235. Rear limit block; 30. Mold closing assembly; 31. Conveyor frame; 311. Lateral drive module; 312. Vertical drive module; 32. Mold opening structure; 321. Mold opening actuator; 322. Mold opening force block; 323. Lateral abutment slope; 324. Bottom abutment slope; 33. Flipping structure; 331. Clamping actuator; 332. Clamping plate; 333. Flipping gripper; 334. Rotation actuator; 335. Clamping positioning post; 336. Inclined positioning gripper; 337. Rotation limit block; 338. Blocking block; 339. Damper; 34. Snap-fit ​​structure; 341. Snap-fit ​​actuator; 342. Snap-fit ​​arm; 343. Roller; 40. Inclined positioning frame; 41. Magnetic block. Detailed Implementation

[0027] Example 1, please refer to Figure 1This is a schematic diagram of a screen assembly inverted mold-closing mechanism provided by the present invention. The screen assembly inverted mold-closing mechanism includes: a positioning carrier 10, a conveying component 20 for conveying the positioning carrier 10, and a mold-closing component 30 for closing the positioning carrier 10. It is conceivable that this screen assembly inverted mold-closing mechanism also includes other functional components and specific structures, such as electrical connection components, control components, and installation structures, all of which are well-known to those skilled in the art and will not be described in detail here.

[0028] Please see Figures 1 to 5 In this embodiment, the positioning carrier 10 is used for positioning and mold closing before product injection. The positioning carrier 10 includes a detachable upper mold 11 and a lower mold 12. It should be noted that the upper mold 11 has a cavity 111, in which the product is embedded and positioned to form a closed injection cavity. The upper mold 11 is spaced apart from the injection holes 112 of the cavity 111. The upper mold 11 is easy to demold and is also a detachable structure; the specific structure will not be described in detail. Before mold closing, the product needs to be pre-positioned in the upper mold 11. The circumferential edges of the upper mold 11 and the lower mold 12 are connected by an insertion structure 14. That is, the upper mold 11 has positioning posts 141, and the lower mold 12 has positioning holes 142, or the positioning posts 141 and positioning holes 142 can be alternately installed, which also facilitates the initial positioning and mold closing of the upper mold 11 and the lower mold 12. It is conceivable that when changing product lines, only different cavities 111 and positioning carriers 10 need to be used, thereby improving the versatility of the entire device and the applicability of automated equipment.

[0029] In this embodiment, limiting arms 13 are rotatably provided on both sides of the lower mold 12 to force it to remain in a closed state. Each limiting arm 13 has at least two hinged connections to both sides of the lower mold 12. A limiting block 16 is provided at the end of the limiting arm 13 away from the lower mold 12. One end of the limiting block 16 protrudes and can abut against the upper mold 11 in the opposite direction. This forces the upper mold 11 and the lower mold 12 to lock together. It is conceivable that a rotation clearance notch 19 is provided at the hinge of the limiting arm 13 and on the side of the upper mold 11 near the limiting arm 13, so that the positioning carrier 10 is close to a rectangular block shape, which facilitates processes such as conveying, clamping, mold closing and glue injection. The hinge end of the limiting arm 13 is provided with a rotation angle self-limiting structure 15. The limiting arm 13 is rotatably connected to the lower mold 12 through a rotating shaft. The rotation angle self-limiting structure 15 is achieved by the limiting arm 13 engaging with the inner wall of the rotation clearance notch 19 on the circumferential outer wall of the rotating shaft. Specifically, the outer wall cross-section of the hinged end of the limiting arm 13 tends to be rectangular, with abutting surfaces 151 on both sides. When the limiting arm 13 rotates at 0° and 90°, it abuts against the upper mold 11, i.e., the limiting arm 13 is in a locked state without external force. Between the two abutting surfaces 151, there is a rotation clearance arc surface 152, i.e., the limit arm 13 has an active angle between 0° and 90°, i.e., the limit arm 13 is in an active state. This invention adopts an inverted mold closing method, which solves the product positioning reliability problem when the original upper mold 11 moves, reduces the product positioning difficulty, and changes the locking and fastening method from the upper mold 11 being embedded in the lower mold 12 to the lower mold 12 invertedly surrounding the upper mold 11. This keeps the upper mold 11 stationary and applies the main driving part to the lower mold 12 structure, reducing the space occupied by the mold closing assembly 30, avoiding driving movement interference in the driving components, and reducing the mold closing difficulty between the upper mold 11 and the lower mold 12.

[0030] Optimally, limiting grooves 17 are spaced apart on the surface of the upper mold 11 away from the lower mold 12, and limiting blocks 16 are spaced apart with a plurality of elastic portions 18 that can elastically engage with the limiting grooves 17. In this embodiment, there are more than four elastic portions 18 spaced apart along the length of the limiting blocks 16. The elastic portions 18 are usually arc-shaped protrusions made of elastic material, which may wear and lose elasticity during long-term use. Therefore, in this embodiment, the elastic portions 18 are installed in blind holes 181 on the limiting blocks 16, with a pressure-holding spring 182 installed in the blind holes 181, and a spherical portion 183 connected to the pressure-holding spring 182 installed in the blind holes 181. The spherical portion 183 rolls into contact with the outer wall of the upper mold 11, allowing for smooth overall movement, and the pressure-holding spring 182 is hidden, improving its service life. The elastic part 18 and the limiting groove 17 cooperate to form a locking point for the limiting arm 13 on the upper mold 11. Combined with the self-limiting structure of the limiting arm 13, the positioning carrier 10 is self-locking and uniformly pressurized.

[0031] In other embodiments, magnetic attraction can also be used to achieve the fastening and pressure holding functions.

[0032] Please see Figure 1 , Figure 6 In this embodiment, the conveying assembly 20 includes two spaced-apart conveying channels 21 for individual upper molds 11 and lower molds 12 to pass through respectively. The conveying channels 21 are separate conveyor belt structures, driven by a motor and rollers at both ends to move the belt in a circular motion. The upper mold 11 and lower mold 12 are conveyed separately, corresponding to different lifting structures 22 and their positioning methods. The conveying channels 21 are provided with lifting structures 22 for lifting the upper mold 11 and lower mold 12 respectively. The lifting structures 22 are used to lift the upper mold 11 and lower mold 12 to a position away from the conveying channels 21, facilitating mold opening, flipping, and mold closing operations in a stationary state. It should be noted that, in order to ensure the stability of conveying the lower mold 12, the limiting arm 13 is in a 90° vertical locked state during the initial transportation stage, which can reduce the space occupied by the lower mold 12 and maintain structural stability.

[0033] Specifically, the lifting structure 22 includes a lifting driver 221 located at the bottom of the conveying channel 21. The lifting driver 221 is a cylinder used to drive the lifting plate 222 to rise and fall. A carrier positioning structure 223 is provided on the lifting plate 222. The upper mold 11 and the lower mold 12 have similar edge dimensions, and both are larger than the lifting plate 222, so that the edges of the upper mold 11 and the lower mold 12 protrude from the lifting plate 222, facilitating the closing of the upper mold 11 and the lower mold 12. In addition, the carrier positioning structure 223 is generally positioned by a plug-in method. Axial limiting structures 23 are provided at intervals at both ends of the lifting plate 222. The axial limiting structure 23 includes a front limiting post 231 located at the front end of the conveying channel 21. The front limiting post 231 is hinged to a front limiting part 232. An elastic member 233 is provided on the front limiting post 231 that acts on the bottom of the rear end of the front limiting part 232, forcing the rear end of the front limiting part 232 to extend into the conveying channel 21. The height of the front limiting part 232 is lower than the support height of the conveying channel 21. The front limiting part 232 tends to be rectangular and the elastic element 233 is a spring. Without external force, the elastic element 233 acts on the front limiting part 232 to form a rear-end upward tilt structure. When the positioning carrier 10 passes through the front limiting part 232, it acts on the inclined surface of the front limiting part 232 to compress the elastic element 233, causing the front limiting part 232 to descend and pass. After the positioning carrier 10 has completely passed, the front limiting part 232 returns to its upward tilt and pushes against one end of the positioning carrier 10, forming a single-end limit. A rear limiting driver 234 is located at the rear end of the conveying channel 21. The rear limiting driver 234 drives a rear limiting part 235 that can extend into the conveying channel 21. The rear limiting driver 234 is a cylinder used to drive the rear limiting part 235 to rise and fall. In actual operation, the rear limit part 235 is pre-raised into the conveying channel 21 to form a rear end block, and the distance between the rear limit part 235 and the front limit part 232 tends to be the length of the positioning carrier 10. That is, after the positioning carrier 10 has completely passed through the front limit part 232, it is positioned between the rear limit part 235 and the front limit part 232, so as to achieve precise positioning of the positioning carrier 10 in the horizontal axis, and enable the lifting structure 22 to accurately lift the upper mold 11 and the lower mold 12.

[0034] Please see Figure 7 In this embodiment, the mold closing assembly 30 includes a conveyor frame 31 disposed above the conveying channel 21. The conveyor frame 31 is sequentially provided with an opening structure 32 for opening the lower mold 12, a flipping structure 33 for flipping the lower mold 12, and a fastening structure 34 for closing the upper mold 11 and the lower mold 12. A horizontal drive module 311 is disposed on the conveyor frame 31. The drive end of the horizontal drive module 311 is provided with a vertical drive module 312. The flipping structure 33 and the fastening structure 34 are both disposed at the output end of the vertical drive module 312. Both the horizontal drive module 311 and the vertical drive module 312 are linear motor modules, which are used to control the horizontal and vertical movement of the flipping structure 33 and the fastening structure 34 as a whole, respectively.

[0035] Please see Figure 8 In this embodiment, the mold opening structure 32 includes a mold opening driver 321 disposed above the conveying channel 21. The mold opening driver 321 is a cylinder, and the driving direction is horizontal. The output end of the mold opening driver 321 is provided with a mold opening force block 322. The set height of the mold opening force block 322 corresponds to the height of the limiting arm 13 after the lifting structure 22 is lifted. The mold opening driver 321 drives the mold opening force block 322 to act horizontally on the end of the limiting arm 13, forcing the limiting arm 13 to rotate outward until it is fully extended. One end of the mold opening force block 322 is provided with a lateral abutment slope 323, and the bottom of the mold opening force block 322 is provided with a bottom abutment slope 324. The lateral abutment slope 323 initially acts on the limiting arm 13 to achieve outward extension force. After the limiting arm 13 is slightly tilted, the bottom abutment slope 324 maintains the contact area of ​​the abutment, changing the force direction to ensure that the limiting arm 13 is continuously subjected to force for outward extension and downward pressing. The horizontal lateral drive method ensures that the mold-opening force-applying block 322 can only contact the limiting arm 13, preventing collisions with other positioning carriers 10 or other components in case of malfunction, thus avoiding damage or safety accidents. It is conceivable that the end of the mold-opening force-applying block 322 with the lateral abutment inclined surface 323 is smaller than the distance between the two limiting arms 13, and the outer diameter of the mold-opening force-applying block 322 gradually increases from the head to the rear, making it suitable for different spacings of the limiting arms 13. Furthermore, one end of the mold-opening force-applying block 322 can extend into the limiting block 16, shifting the initial force point of the mold-opening force-applying block 322 and the elastic arm to the middle position of the mold-opening force-applying block 322, resulting in more balanced and stable force application. This causes the elastic blocks to sequentially disengage from the limiting groove 17. In conjunction with the deformation of the limiting arm 13 itself, the limiting block 16 opens outward to fit against the bottom abutment of the inclined surface 324. This gradual and slow outward expansion of the limiting arm 13, compared to the collision-type outward expansion method, reduces the wear of the mold opening components during the mold opening process, avoids the problem of the lower mold 12 shaking due to the instantaneous loss of control when the limiting arm 13 is unlocked, and improves the stability of the mold opening.

[0036] Please see Figure 7 , Figure 9 In this embodiment, inclined positioning frames 40 are provided on both sides of the conveying channel 21. After the lower mold 12 is opened by the mold opening structure 32, the limiting arm 13 is in a movable state. The inclined positioning frames 40 allow the limiting arm 13 to open and rest against the mold to maintain a set angle. Optimally, a magnetic block 41 is provided between the inclined positioning frame 40 and the limiting arm 13 to keep the angle of the limiting arm 13 stable and unaffected by external environmental factors.

[0037] The flipping structure 33 includes a clamping driver 331 mounted on the conveyor frame 31. The clamping driver 331 is a cylinder that drives the clamping plate 332 to move in opposite directions to achieve clamping and opening. Flipping grippers 333 are rotatably mounted on the clamping plate 332 at both ends of the positioning carrier 10. The flipping grippers 333 are rotatably mounted on the clamping plate 332 via a rotating shaft and bearings. A rotary driver 334, also a cylinder, is connected to the flipping grippers 333. The rotary driver 334 drives a rack and pinion gear to rotate the flipping grippers 333. A clamping and positioning part 335 and an inclined positioning jaw 336 are provided at intervals on the flipping jaw 333. The flipping jaw 333 is driven by the clamping driver 331 to clamp at both ends of the lower mold 12. The shape of the flipping jaw 333 is close to the outward connection state of the lower mold 12 body and the limiting arm 13. The clamping and positioning part 335 is embedded in the clamping hole preset on the side of the lower mold 12 body. The inclined positioning jaw 336 clamps the movable limiting arm 13 to achieve synchronous clamping. After the vertical drive module 312 rises, the limiting arm 13 disengages from the inclined positioning frame 40. Then, the flipping jaw 333 is driven to rotate by the rotary driver 334 to realize the overall flipping of the lower mold 12 and the limiting arm 13. It can be imagined that a rotation limiting part 337 is provided on the side of the flipping jaw 333 away from the clamping position. A blocking block 338 that can connect with the rotation limiting part 337 is provided on the clamping plate 332 to control the rotation stroke of the flipping jaw 333. A damper 339 is also provided on one side of the blocking block 338. The rotation limit part 337 first contacts the damper 339 to reduce the rotation speed, and then slowly connects with the blocking block 338. This can avoid long-term rotational collision between the rotation limit part 337 and the blocking block 338 and improve the service life.

[0038] In this embodiment, before the mold is closed, the lower mold 12 is inverted and placed on top of the upper mold 11 by the horizontal drive module 311 and the vertical drive module 312 of the conveyor frame 31, completing the initial mold closing. After the flipping structure 33 releases the lower mold 12 and the limiting arm 13, the limiting arm 13 rotates and falls under the influence of gravity, and is engaged with the outer wall of the upper mold 11 by the elastic part 18. The elastic part 18 avoids the collision problem between the limiting arm 13 and the upper mold 11.

[0039] Please see Figure 7 , Figure 10 In this embodiment, the fastening structure 34 includes a fastening driver 341 mounted on the conveyor frame 31. The fastening driver 341 is a cylinder that drives a fastening arm 342 that moves in opposite directions. The fastening arm 342 is equipped with a roller 343 that acts on the limiting arm 13 and maintains rolling contact with the limiting arm 13. By driving the fastening arm 342 to apply force to the limiting arm 13 through the fastening driver 341, the elastic part 18 is finally engaged in the limiting groove 17, completing the self-locking mold closing of the positioning carrier 10.

[0040] It should also be noted that after the mold is closed, the positioning carrier 10 descends and continues to be conveyed by the limiting part against the conveying channel 21, or it is flipped again by the flipping structure 33 and descends to the conveying channel 21 to continue being conveyed.

[0041] Example 2: The present invention also provides a mold closing method for a screen assembly inverted mold closing mechanism, the steps of which are as follows: S1, place the product on the upper mold 11, the conveying channel 21 conveys the upper mold 11 and the lower mold 12 to the set position, and the lifting structure 22 lifts the upper mold 11 and the lower mold 12 to the set position; S2, the lower mold 12 in the locked state is unlocked by the mold opening structure 32 acting on the limiting arm 13, and the lower mold 12 and the limiting arm 13 are synchronously positioned and clamped by the flipping structure 33, and then the whole is flipped. S3, after S2 is flipped, the lower mold 12 is moved above the upper mold 11, and the initial mold closing is completed after the height is lowered; S4, the flipping structure 33 disengages from the lower mold 12, and the upper mold 11 and the lower mold 12 are locked together by the fastening structure 34 to complete the final mold closing. The lifting structure 22 lowers the mold closing positioning carrier 10 to the conveying channel 21 to continue the conveying.

[0042] This mold-closing method adopts a fully automated process of product loading, mold opening (12 steps), flipping, and inverted locking, eliminating manual operation, standardizing the operation of each station, and improving work efficiency.

[0043] Example 3: The present invention also provides a screen assembly line having the screen assembly inverted mold closing mechanism as described above. Except for the screen assembly inverted mold closing mechanism, the other components are all prior art or commercially available parts, and will not be described in detail here.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A screen assembly inverted mold closing mechanism, characterized in that, include: The positioning carrier (10) includes a detachable upper mold (11) and a lower mold (12), and the lower mold (12) is rotatably provided with limiting arms (13) on both sides to force it to remain in the mold-closed state. The conveying assembly (20) includes two conveying channels (21) spaced apart and respectively for the passage of a single upper mold (11) and lower mold (12), and the conveying channels (21) are provided with lifting structures (22) for lifting the upper mold (11) and lower mold (12) respectively. The mold closing assembly (30) includes a conveyor frame (31) disposed above the conveyor channel (21). The conveyor frame (31) is provided with an opening structure (32) for opening the lower mold (12), a flipping structure (33) for flipping the lower mold (12), and a snap-fit ​​structure (34) for closing the upper mold (11) and the lower mold (12).

2. The screen assembly inverted mold-closing mechanism according to claim 1, characterized in that, The upper mold (11) and the lower mold (12) are connected by a plug-in structure (14) at their circumferential edges. The hinge end of the limiting arm (13) is provided with a rotation angle self-limiting structure (15). The end of the limiting arm (13) away from the lower mold (12) is provided with a limiting block (16) that can abut against the upper mold (11) in the opposite direction.

3. The screen assembly inverted mold-closing mechanism according to claim 2, characterized in that, The upper mold (11) has a limiting groove (17) spaced apart on the side away from the lower mold (12), and the limiting block (16) has a plurality of elastic parts (18) spaced apart that can be elastically inserted into the limiting groove (17).

4. The screen assembly inverted mold-closing mechanism according to claim 1, characterized in that, The mold opening structure (32) includes a mold opening driver (321) disposed above the conveying channel (21). The output end of the mold opening driver (321) is provided with a mold opening force block (322). One end of the mold opening force block (322) is provided with a lateral abutment slope (323), and the bottom of the mold opening force block (322) is provided with a bottom abutment slope (324).

5. The screen assembly inverted mold-closing mechanism according to claim 1, characterized in that, The conveyor frame (31) is provided with a horizontal drive module (311), and the drive end of the horizontal drive module (311) is provided with a vertical drive module (312). The flipping structure (33) and the fastening structure (34) are both provided at the output end of the vertical drive module (312).

6. The screen assembly inverted mold-closing mechanism according to claim 1 or 5, characterized in that, The flipping structure (33) includes a clamping driver (331) mounted on the conveyor frame (31). The clamping driver (331) drives a clamping plate (332) that moves in opposite directions. A flipping gripper (333) is rotatably mounted on the clamping plate (332) and located at both ends of the positioning carrier (10). The flipping gripper (333) is connected to a rotary driver (334) and a clamping positioning part (335) and an inclined positioning gripper (336) are spaced apart on the flipping gripper (333). An inclined positioning frame (40) is provided on both sides of the conveying channel (21) for the limiting arm (13) to open and rest.

7. The screen assembly inverted mold-closing mechanism according to claim 1 or 5, characterized in that, The fastening structure (34) includes a fastening driver (341) disposed on the conveyor frame (31), the fastening driver (341) drives a fastening arm (342) disposed on opposite sides to move, and the fastening arm (342) is provided with a roller (343) acting on the limiting arm (13).

8. The screen assembly inverted mold-closing mechanism according to claim 1, characterized in that, The lifting structure (22) includes a lifting driver (221) disposed at the bottom of the conveying channel (21), the lifting driver (221) drives a lifting plate (222) disposed thereon, the lifting plate (222) is provided with a carrier positioning structure (223), and axial limiting structures (23) are spaced apart at both ends of the lifting plate (222).

9. The mold-closing method of the screen assembly inverted mold-closing mechanism according to any one of claims 1-8, characterized in that, The steps of the mold closing method are as follows: S1, place the product on the upper mold (11), the conveying channel (21) conveys the upper mold (11) and the lower mold (12) to the set position, and the lifting structure (22) lifts the upper mold (11) and the lower mold (12) to the set position; S2, the mold opening structure (32) acts on the limiting arm (13) to unlock the lower mold (12) in the locked state, and the flipping structure (33) synchronously positions and clamps the lower mold (12) and the limiting arm (13) and flips them as a whole. S3, after flipping the lower mold (12) in S2, move it above the upper mold (11), and lower the height to complete the initial mold closing; S4, the flipping structure (33) disengages from the lower mold (12), and the upper mold (11) and lower mold (12) are locked together by the snap-fit ​​structure (34) to complete the final mold closing. The lifting structure (22) lowers the mold closing positioning carrier (10) to the conveying channel (21) to continue conveying.

10. A screen assembly line, characterized in that, The screen assembly inverted mold closing mechanism is as described in any one of claims 1-8.

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