Automatic packaging equipment for contact lenses

Abstract

The present invention relates to the field of contact lens production technology, specifically to an automatic contact lens packaging device, including a first conveying mechanism, the first conveying mechanism including a mounting frame, the inner side of the mounting frame is equidistantly rotated from left to right with a conveying sprocket installed, the outer side of the conveying sprocket is connected to a conveying chain belt, and the conveying chain belt is evenly distributed with a plurality of positioning mechanisms circumferentially. The present invention positions the positioning mechanism through the linkage cooperation of the first conveying mechanism and the positioning mechanism. In the process of the first conveying mechanism driving the positioning mechanism to move to the right, the driving assembly is used to sequentially drive the lifting assembly and the clamping assembly, firstly the lifting assembly lifts the right end of the bearing platform upward, so that the glasses box slides to the left and abuts against the baffle, and then the clamping assembly drives the clamping plate to clamp the glasses box front and back for centering, so that the glasses box can maintain the same spacing and position for loading, and the position of the glasses box is adjusted during the conveying process.

Description

Technical Field

[0001] The invention relates to the technical field of contact lens production, in particular to automatic contact lens packaging equipment. Background Art

[0002] Contact lenses are small transparent lenses placed directly on the surface of the eyeball to correct vision or protect the eyes. Contact lenses are generally placed in contact lens cases. During the production and processing of contact lenses, the contact lens cases containing contact lenses need to be plastic-sealed. Plastic packaging is a common practice to ensure that the contact lens cases remain hygienic and sealed during transportation and storage.

[0003] The existing contact lens cases (hereinafter referred to as the contact lens cases) are generally plastic-sealed in a manner that the contact lens cases are transported to a packaging device via a conveying device, and then the contact lens cases are plastic-sealed by the packaging device. However, the above packaging steps still have the following deficiencies: during the process of transporting the contact lens cases to the packaging device, the contact lens cases are easily offset, resulting in the inability to keep the spacing between the contact lens cases consistent, causing a position deviation between the contact lens cases and subsequent thermal plastic-sealing packaging points, thereby affecting the subsequent packaging equipment from accurately packaging the contact lens cases. When the contact lens cases are offset, the efficiency of manually adjusting the position of the contact lens cases is relatively low, and it is also difficult to ensure accurate adjustment, thereby affecting the efficiency of the entire contact lens packaging. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an automatic contact lens packaging device, including a first conveying mechanism, the first conveying mechanism includes a mounting frame, a conveying sprocket is installed on the inner side of the mounting frame for equidistant rotation from left to right, a conveying chain belt is connected to the outside of the conveying sprocket, a driving motor for driving the leftmost conveying sprocket to rotate is installed at the front end of the mounting frame, a plurality of positioning mechanisms are evenly distributed circumferentially on the conveying chain belt, a second conveying mechanism is arranged on the rear side of the mounting frame, a gantry is arranged on the right end of the mounting frame, a supporting beam is fixedly installed on the inner side of the gantry, a third conveying mechanism is installed on the supporting beam, and a heat sealing packaging mechanism is installed on the top of the gantry.

[0005] The positioning mechanism includes a base fixedly mounted on the conveyor chain, a bearing platform hinged on the base, a lifting assembly for driving the bearing platform to rotate is installed inside the base, a clamping plate is symmetrically installed on the bearing platform for sliding forward and backward, a clamping assembly for driving the clamping plate to slide forward and backward is installed inside the bearing platform, a baffle plate that slides up and down is installed on the bearing platform, a lifting assembly for driving the baffle plate to move up and down is installed inside the bearing platform, and a driving assembly for driving the lifting assembly, the clamping assembly and the lifting assembly is installed on the mounting frame.

[0006] In one possible implementation, the lifting assembly includes a first slide groove opened inside the base, a first lead screw is rotatably installed inside the first slide groove, a first slider is connected to the external thread of the first lead screw, the first slider is slidably installed inside the first slide groove, a transmission rod 1 is rotatably installed inside the base, the rear end of the transmission rod 1 is transmission connected to the first lead screw through a worm gear mechanism, a sliding groove frame is symmetrically fixedly connected to the front and rear positions of the bottom of the support platform near the first slide groove, a sliding rod is slidably installed inside the front and rear sliding groove frames, a first support rod is rotatably connected between the first slider and the sliding rod, a second support rod is rotatably connected between the sliding rod and the base, and the transmission rod 1 is located on the side of the first lead screw away from the second support rod.

[0007] In one possible implementation, the clamping assembly includes a second slide groove that is symmetrically opened front and back on the top of the supporting platform, the clamping plate is slidably installed in the corresponding second slide groove, a bidirectional lead screw is rotatably installed inside the supporting platform, and the front and rear ends of the bidirectional lead screw are threadedly connected to a second slider, the bottom end of the clamping plate is fixedly connected to the corresponding second slider, and the second slider is located on the side of the supporting platform away from the corresponding first slide groove.

[0008] In one possible implementation, the lifting assembly includes a rotating rod rotatably installed inside the supporting platform, and a rotating gear is fixedly connected to the rotating rod symmetrically in the front and back directions. The baffle plate is provided with tooth grooves symmetrically in the front and back directions on one side close to the corresponding clamping plate, and the rotating gear is meshed with the corresponding tooth grooves. A reset spring is fixedly connected between the bottom of the baffle plate and the inner wall of the supporting platform.

[0009] In a possible implementation, the driving assembly includes a first lower rack and a second lower rack fixedly mounted on the top of the front side of the mounting frame, the second lower rack is located on the right side of the first lower rack and the two are staggered front and back, the first upper rack and the second upper rack located above the top of the mounting frame are fixedly mounted on the top of the front side of the mounting frame through a support plate, the second upper rack is located on the right side of the first upper rack and the two are staggered front and back, the first upper rack is located on the right side of the second lower rack, the third upper rack is fixedly mounted on the top of the rear side of the mounting frame through a support plate, the third upper rack is located on the right side of the second upper rack, the front end of the transmission rod 1 extends to the front of the base and is fixedly connected with the second gear, the lower side and the upper side of the second gear are respectively meshed with the first lower rack and the first upper rack, the front end of the bidirectional lead screw extends to the front of the base and is fixedly connected with the first gear, the lower side and the upper side of the first gear are respectively meshed with the second lower rack and the second upper rack, the rear end of the rotating rod extends to the rear of the base and is fixedly connected with the third gear, and the third gear is meshed with the third upper rack.

[0010] In one possible implementation, the third conveying mechanism includes a conveying frame 1 installed on the top of the supporting beam, a conveying frame 2 is fixedly connected to the left side of the conveying frame 1, a through hole for the packaging film to pass through is opened between the conveying frame 1 and the conveying frame 2, the left end of the conveying frame 2 is inclined downward, the bottom of the left end of the conveying frame 2 is horizontally arranged and flush with the upper surface of the top supporting platform, a first conveyor belt is installed inside the conveying frame 2, a second conveyor belt is installed inside the conveying frame 1, a limiting assembly is symmetrically installed on the top of the conveying frame 2, a conveying frame 3 located above the second conveyor belt is installed at the bottom of the horizontal section of the gantry, and a third conveyor belt is installed on the conveying frame 3.

[0011] In one possible implementation, the first conveyor belt, the second conveyor belt and the third conveyor belt are each composed of a plurality of conveyor rollers and a plurality of conveyor roller exteriors that are transmission-connected to each other, the conveyor rollers in the first conveyor belt rotate inside the second conveyor frame, the conveyor rollers in the second conveyor belt are rotationally installed inside the first conveyor frame, the conveyor rollers in the third conveyor belt are rotationally installed inside the third conveyor frame, the conveyor rollers at the right end of the first conveyor belt and the conveyor rollers at the left end of the second conveyor belt are transmission-connected via a belt, the conveyor rollers at the right end of the third conveyor belt and the conveyor rollers at the right end of the second conveyor belt are transmission-connected via a gear set, and the conveyor rollers at the left end of the second conveyor belt are transmission-connected to the rightmost conveyor sprocket via a belt.

[0012] In one possible implementation, the limiting assembly includes a limiting frame fixedly mounted on the top of the second conveyor frame, a plurality of limiting rollers are rotatably mounted inside the limiting frame at equal intervals on the left and right sides, adjacent limiting rollers are connected by belt transmission, a transmission rod 2 is rotatably mounted on the side of the second conveyor frame away from the center of the first conveyor belt, the transmission rod 2 is transmission-connected to the leftmost limiting roller through a belt, the transmission rod 2 is transmission-connected to the leftmost conveyor roller of the first conveyor belt through a bevel gear set, a guide plate located on the left side of the limiting frame is fixedly mounted on the top of the left end of the second conveyor frame, the front and rear two guide plates are arranged in an eight-shaped shape with the small end aligned between the front and rear limiting rollers.

[0013] In one possible implementation, the heat-sealing packaging mechanism includes an electric push rod fixedly mounted on the gantry and located on the left side of conveyor frame three, the bottom of the telescopic section of the electric push rod is fixedly connected to a heat-sealing assembly, the bottom of the conveyor frame one is rotatably mounted with a first film roller, and the bottom of the horizontal section of the gantry is rotatably mounted with a second film roller located on the upper left side of conveyor frame one.

[0014] In one possible implementation, the heat sealing assembly includes a rectangular frame fixedly mounted on the bottom of the telescopic section of the electric push rod, a U-shaped heat sealing strip is fixedly mounted on the bottom of the rectangular frame, and pushing plates are hinged on the four vertical inner walls of the rectangular frame, and a return spring 2 is fixedly connected between the pushing plates and the corresponding vertical inner walls of the rectangular frame.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention positions the positioning mechanism through the linkage cooperation of the first conveying mechanism and the positioning mechanism. In the process of the first conveying mechanism driving the positioning mechanism to move to the right, the driving assembly is used to sequentially drive the lifting assembly and the clamping assembly. The lifting assembly first lifts the right end of the supporting platform upward to make the glasses box slide to the left and abut against the baffle. The clamping assembly then drives the clamping plate to clamp and center the glasses box front and back. Thereafter, the driving assembly drives the lifting assembly and the clamping assembly in reverse to reverse the supporting platform to a horizontal state. The clamping plate then releases the clamping of the glasses box, so that the glasses box can maintain the same spacing and position for loading. The position of the glasses box is adjusted during the conveying process, which is conducive to the subsequent accurate packaging of the glasses boxes one by one, thereby improving the quality of packaging.

[0016] 2. In the process of conveying the glasses case from the positioning mechanism to the heat-sealing packaging mechanism of the present invention, the first conveyor belt, the second conveyor belt, the limiting assembly and the first conveying mechanism are linked to each other to realize synchronous and stable conveying of the glasses case. At the same time, the limiting assembly can limit the front and rear sides of the glasses case to prevent the glasses case from being offset forward and backward during the conveying process and prevent the glasses case from being misplaced during heat sealing, thereby improving the quality of packaging.

[0017] 3. The present invention arranges a pushing plate inside the rectangular frame. When the electric push rod pushes the heat-sealing strip downward, when the pushing plate contacts the glasses case, the pushing plate can push the glasses case from four directions of front, back, left and right through the packaging film, so that the glasses case can be centered in the rectangular frame, further preventing the glasses case from being misplaced during the heat-sealing process, and further improving the quality of packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0019] Figure 2 It is a schematic diagram of the second viewing angle structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the first conveying mechanism of the present invention.

[0021] Figure 4 It is a top view of the first conveying mechanism of the present invention.

[0022] Figure 5It is a three-dimensional structural schematic diagram of the positioning mechanism of the present invention.

[0023] Figure 6 It is a front cross-sectional view of the positioning mechanism of the present invention.

[0024] Figure 7 It is a front cross-sectional view of the third conveying mechanism of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the third conveying mechanism of the present invention.

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the limiting component of the present invention.

[0027] Fig.10 It is a front cross-sectional view of the heat sealing assembly of the present invention.

[0028] In the figure: 1, first conveying mechanism; 11, mounting frame; 12, conveying sprocket; 13, conveying chain; 14, driving motor; 2, positioning mechanism; 21, base; 22, bearing platform; 23, lifting assembly; 231, first slide; 232, first lead screw; 233, first slider; 234, transmission rod 1; 235, sliding groove frame; 236, sliding rod; 237, first support rod; 238, second support rod; 24, clamping plate; 25, clamping assembly; 251, second slide; 252, two-way lead screw; 253, second slider; 26, baffle; 27, lifting assembly; 271, rotating rod; 272, rotating gear; 273, tooth groove; 274, reset spring 1; 28, driving assembly; 281, first lower rack; 282, second lower rack; 283 , the first upper rack; 284, the second upper rack; 285, the third upper rack; 286, the first gear; 287, the second gear; 288, the third gear; 3, the second conveying mechanism; 4, the gantry; 41, the supporting beam; 5, the third conveying mechanism; 51, the conveying frame one; 511, the through hole; 52, the conveying frame two; 53, the first conveyor belt; 54, the second conveyor belt; 55, the limiting component; 551, the limiting frame; 552, the limiting roller; 553, the transmission rod two; 554, the guide plate; 56, the conveying frame three; 57, the third conveyor belt; 6, the heat sealing packaging mechanism; 61, the electric push rod; 62, the heat sealing component; 621, the rectangular frame; 622, the heat sealing strip; 623, the pushing plate; 624, the reset spring two; 63, the first film roller; 64, the second film roller. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] See also Figure 1 , Figure 2 and Figure 3 A contact lens automatic packaging device comprises a first conveying mechanism 1, the first conveying mechanism 1 comprises a mounting frame 11, a conveying sprocket 12 is equidistantly mounted on the inner side of the mounting frame 11 from left to right, a conveying chain belt 13 is connected to the outer side of the conveying sprocket 12, a driving motor 14 for driving the leftmost conveying sprocket 12 to rotate is mounted on the front end of the mounting frame 11, a plurality of positioning mechanisms 2 are evenly distributed circumferentially on the conveying chain belt 13, a second conveying mechanism 3 is arranged on the rear side of the mounting frame 11, a gantry frame 4 is arranged on the right end of the mounting frame 11, a supporting crossbeam 41 is fixedly mounted on the inner side of the gantry frame 4, a third conveying mechanism 5 is mounted on the supporting crossbeam 41, and a heat-sealing packaging mechanism 6 is mounted on the top of the gantry frame 4.

[0031] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 The positioning mechanism 2 includes a base 21 fixedly mounted on the conveyor chain 13, a bearing platform 22 is hinged on the base 21, a lifting assembly 23 for driving the bearing platform 22 to rotate is installed inside the base 21, a clamping plate 24 is symmetrically installed on the bearing platform 22 for sliding forward and backward, a clamping assembly 25 for driving the clamping plate 24 to slide forward and backward is installed inside the bearing platform 22, a baffle 26 for sliding up and down is installed on the bearing platform 22, a lifting assembly 27 for driving the baffle 26 to move up and down is installed inside the bearing platform 22, and a driving assembly 28 for driving the lifting assembly 23, the clamping assembly 25, and the lifting assembly 27 is installed on the mounting frame 11.

[0032] The conveying sprocket 12 is driven by the driving motor 14 to rotate intermittently, and then the conveying sprocket 12 drives the conveying chain 13 to rotate, so that the conveying chain 13 drives the base 21 to move clockwise. When the base 21 moves to a position aligned with the second conveying mechanism 3, the conveying sprocket 12 stops rotating, and the glasses case is conveyed to the supporting platform 22 through the second conveying mechanism 3, so that the supporting platform 22 drives the glasses case to move intermittently to the right.

[0033] See also Figure 3 , Figure 5 and Figure 6The lifting assembly 23 includes a first slide groove 231 opened inside the base 21, a first lead screw 232 is rotatably installed inside the first slide groove 231, a first slider 233 is connected to the external thread of the first lead screw 232, and the first slider 233 is slidably installed inside the first slide groove 231, a transmission rod 234 is rotatably installed inside the base 21, and the rear end of the transmission rod 234 is transmission-connected to the first lead screw 232 through a worm gear mechanism, a sliding groove frame 235 is symmetrically fixedly connected to the position of the bottom of the bearing platform 22 near the first slide groove 231, and a sliding rod 236 is slidably installed between the front and rear sliding groove frames 235, a first support rod 237 is rotatably connected between the first slider 233 and the sliding rod 236, a second support rod 238 is rotatably connected between the sliding rod 236 and the base 21, and the transmission rod 234 is located on the side of the first lead screw 232 away from the second support rod 238.

[0034] After the glasses case falls onto the supporting platform 22, the driving assembly 28 drives the transmission rod 234 to rotate, and then the transmission rod 234 drives the first lead screw 232 to rotate through the worm gear mechanism, so that the first slider 233 slides along the first slide groove 231 toward the corresponding second support rod 238, and the first slider 233 is used to push the bottom end of the first support rod 237 to move synchronously, and the angle between the first support rod 237 and the second support rod 238 gradually decreases, and the first support rod 237 and the second support rod 238 cooperate to push the sliding rod 236 to move upward, and the sliding rod 236 also slides along the sliding groove frame 235, thereby lifting the supporting platform 22 upward, so that the glasses case can slide along the supporting platform 22 and abut against the baffle 26, so as to position the glasses case left and right.

[0035] See also Figure 3 , Figure 5 and Figure 6 The clamping assembly 25 includes a second slide groove 251 symmetrically opened on the top of the supporting platform 22. The clamping plate 24 is installed in the corresponding second slide groove 251 for sliding forward and backward. A bidirectional screw 252 is installed for rotation inside the supporting platform 22. The front and rear ends of the bidirectional screw 252 are both threadedly connected with a second slider 253. The bottom end of the clamping plate 24 is fixedly connected to the corresponding second slider 253. The second slider 253 is located on the side of the supporting platform 22 away from the corresponding first slide groove 231.

[0036] After the glasses box is against the baffle 26, the driving assembly 28 drives the bidirectional lead screw 252 to rotate, so that the two front and rear second sliders 253 drive the clamping plate 24 to move toward the center of the supporting platform 22, so that the clamping plate 24 clamps and centers the glasses box front and back, thereby realizing the front and rear positioning of the glasses box.

[0037] See also Figure 3 , Figure 5 and Figure 6 The lifting assembly 27 includes a rotating rod 271 rotatably installed inside the supporting platform 22, and a rotating gear 272 is fixedly connected to the rotating rod 271 symmetrically in the front and back directions. A tooth groove 273 is symmetrically opened in the front and back directions on one side of the baffle 26 close to the corresponding clamping plate 24. The rotating gear 272 is meshed with the corresponding tooth groove 273, and a return spring 274 is fixedly connected between the bottom of the baffle 26 and the inner wall of the supporting platform 22.

[0038] The driving assembly 28 drives the rotating rod 271 to rotate, and then the rotating rod 271 drives the rotating gear 272 to rotate, so that the rotating gear 272 cooperates with the tooth groove 273 to drive the baffle 26 to move downward, so that the baffle 26 can be retracted into the interior of the supporting platform 22 to avoid affecting the cyclic movement of the positioning mechanism 2. When the driving assembly 28 no longer drives the rotating rod 271 to rotate, the rebound force of the reset spring 274 is used to push the baffle 26 to move upward and reset, so as to facilitate the subsequent blocking and limiting of the glasses case.

[0039] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The driving assembly 28 includes a first lower rack 281 and a second lower rack 282 fixedly mounted on the top of the front side of the mounting frame 11, the second lower rack 282 is located on the right side of the first lower rack 281 and the two are staggered front and back, the front side top of the mounting frame 11 is fixedly mounted with a first upper rack 283 and a second upper rack 284 located above the top of the mounting frame 11 through a support plate, the second upper rack 284 is located on the right side of the first upper rack 283 and the two are staggered front and back, the first upper rack 283 is located on the right side of the second lower rack 282, and the rear side top of the mounting frame 11 is fixedly mounted with a third upper rack 285 through a support plate, the third upper rack 285 is located on the second upper rack 28 4, the front end of the transmission rod 234 extends to the front of the base 21 and is fixedly connected to the second gear 287, the lower side and the upper side of the second gear 287 are respectively meshed with the first lower rack 281 and the first upper rack 283, the front end of the bidirectional lead screw 252 extends to the front of the base 21 and is fixedly connected to the first gear 286, the lower side and the upper side of the first gear 286 are respectively meshed with the second lower rack 282 and the second upper rack 284, the rear end of the rotating rod 271 extends to the rear of the base 21 and is fixedly connected to the third gear 288, the third gear 288 is meshed with the third upper rack 285, and the second conveying mechanism 3 is located on the left side of the first lower rack 281.

[0040] During the process of the base 21 moving to the right, the second gear 287 first meshes with the first lower rack 281, and the first lower rack 281 is used to drive the second gear 287 to rotate clockwise, and then the second gear 287 drives the transmission rod 234 to rotate, so that the lifting assembly 23 lifts the right end of the support platform 22 upward. After the second gear 287 is separated from the first lower rack 281, the first gear 286 meshes with the second lower rack 282, and the second lower rack 282 drives the first gear 286 to rotate clockwise, and then the first gear 286 drives the bidirectional screw 252 to rotate, and then the clamping assembly 25 drives the clamping plate 24 to clamp and center the glasses case.

[0041] After the first gear 286 is separated from the second lower rack 282, the second gear 287 is meshed with the first upper rack 283, and the first upper rack 283 is used to drive the second gear 287 and the lifting assembly 23 to rotate counterclockwise, so that the lifting assembly 23 drives the supporting platform 22 to rotate to a horizontal state. After the second gear 287 is separated from the first upper rack 283, the first gear 286 is meshed with the second upper rack 284, and the second upper rack 284 is used to drive the first gear 286 and the two-way lead screw 252 to rotate counterclockwise, so that the clamping assembly 25 drives the clamping plate 24 to loosen the clamping of the eyeglass case. Then the third gear 288 is meshed with the third upper rack 285, and the third upper rack 285 is used to drive the third gear 288 and the rotating rod 271 to rotate counterclockwise, so that the lifting assembly 27 can drive the baffle 26 to move down to the supporting platform 22.

[0042] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 The third conveying mechanism 5 includes a conveying frame 1 51 installed on the top of the supporting beam 41, a conveying frame 2 52 is fixedly connected to the left side of the conveying frame 1 51, a through hole 511 for the packaging film to pass through is opened between the conveying frame 1 51 and the conveying frame 2 52, the left end of the conveying frame 2 52 is tilted downward, the bottom of the left end of the conveying frame 2 52 is horizontally arranged and flush with the upper surface of the top bearing platform 22, a first conveyor belt 53 is installed inside the conveying frame 2 52, a second conveyor belt 54 is installed inside the conveying frame 1 51, a limiting assembly 55 is symmetrically installed on the top of the conveying frame 2 52, a conveying frame 3 56 located above the second conveyor belt 54 is installed at the bottom of the horizontal section of the gantry 4, and a third conveyor belt 57 is installed on the conveying frame 3 56.

[0043] See also Figure 1 , Figure 2 , Figure 7 and Figure 8The first conveyor belt 53, the second conveyor belt 54 and the third conveyor belt 57 are all composed of a plurality of conveyor rollers and a plurality of conveyor rollers The outside of the conveyor belts are connected by transmission. The conveyor rollers in the first conveyor belt 53 rotate inside the conveyor frame 2 52, the conveyor rollers in the second conveyor belt 54 are rotatably installed inside the conveyor frame 1 51, and the conveyor rollers in the third conveyor belt 57 are rotatably installed inside the conveyor frame 3 56. The conveyor rollers at the right end of the first conveyor belt 53 and the conveyor rollers at the left end of the second conveyor belt 54 are connected by belt transmission, the conveyor rollers at the right end of the third conveyor belt 57 and the conveyor rollers at the right end of the second conveyor belt 54 are connected by a gear set, and the conveyor rollers at the left end of the second conveyor belt 54 are connected by belt transmission to the rightmost conveyor sprocket 12.

[0044] When the driving motor 14 drives the conveying sprocket 12 to rotate, the conveying sprocket 12 drives the second conveyor belt 54 to rotate through the corresponding belt, and then the second conveyor belt 54 drives the first conveyor belt 53 and the third conveyor belt 57 to rotate through the corresponding belt. When the supporting platform 22 drives the glasses box to move to the conveying frame 2 52, the glasses box is pushed onto the first conveyor belt 53 through the baffle 26, and the glasses box is driven to move to the right by the first conveyor belt 53 to be transported to the film on the top of the second conveyor belt 54. Then the second conveyor belt 54 drives the glasses box to move to the heat-sealing packaging mechanism 6 for heat-sealing packaging.

[0045] See also Figure 8 and Fig. 9 The limiting assembly 55 includes a limiting frame 551 fixedly installed on the top of the conveying frame 52, and a plurality of limiting rollers 552 are rotatably installed inside the limiting frame 551 at equal intervals. Adjacent limiting rollers 552 are connected by belt transmission. A transmission rod 553 is rotatably installed on the side of the conveying frame 52 away from the center of the first conveyor belt 53. The transmission rod 553 is connected to the limiting roller 552 on the far left through a belt. The transmission rod 553 is connected to the conveying roller on the far left of the first conveyor belt 53 through a bevel gear set. A guide plate 554 located on the left side of the limiting frame 551 is fixedly installed on the top of the left end of the conveying frame 52. The front and rear guide plates 554 are arranged in an eight-shaped shape and the small end is aligned between the front and rear limiting rollers 552.

[0046] When the right end of the glasses box moves to the conveying frame 2 52, the guide plate 554 can play a guiding role, so that the glasses box can smoothly enter between the front and rear limiting rollers 552, and the limiting rollers 552 are used to limit the front and rear positions of the glasses box to prevent the glasses box from shifting forward and backward. When the first conveyor belt 53 drives the glasses box to move to the right, the first conveyor belt 53 can drive the limiting rollers 552 to rotate, so that the limiting rollers 552 can be clamped on the front and rear sides of the glasses box and drive the glasses box to move to the right, thereby preventing the glasses box from slipping on the first conveyor belt 53 and ensuring stable transportation of the glasses box.

[0047] See also Figure 1 and Figure 7 The heat-sealing packaging mechanism 6 includes an electric push rod 61 fixedly mounted on the gantry 4 and located on the left side of the conveying frame 3 56, a heat-sealing assembly 62 is fixedly connected to the bottom of the telescopic section of the electric push rod 61, a first film roller 63 is rotatably mounted on the bottom of the conveying frame 1 51, and a second film roller 64 located on the upper left of the conveying frame 1 51 is rotatably mounted on the bottom of the horizontal section of the gantry 4.

[0048] See also Figure 7 and Fig.10 The heat sealing assembly 62 includes a rectangular frame 621 fixedly mounted at the bottom of the telescopic section of the electric push rod 61, a U-shaped heat sealing strip 622 fixedly mounted at the bottom of the rectangular frame 621, and a pushing plate 623 is hinged on each of the four vertical inner side walls of the rectangular frame 621, and a return spring 2 624 is fixedly connected between the pushing plate 623 and the corresponding vertical inner side wall of the rectangular frame 621. It should be noted that the heat sealing strip 622 is a prior art, which has the function of heating the packaging film after pressing it to make the packaging film adhere.

[0049] The first film roller 63 and the second film roller 64 are controlled by an external driving source to release the packaging film respectively. The packaging film released by the first film roller 63 passes upward through the through hole 511 and is transported to the right along the surface of the second conveyor belt 54 and connected to the external winding device. The packaging film released by the second film roller 64 is located above the glasses box and is also transported to the right and connected to the external winding device. The glasses box is transported between the upper and lower layers of packaging film and is driven to move to the right by the second conveyor belt 54. When the glasses box moves to the rectangular frame 6 21, the rectangular frame 621 and the heat-sealing strip 622 are pushed downward by the electric push rod 61, and before the heat-sealing strip 622 presses and heats the upper and lower layers of packaging film, the pushing plate 623 first contacts with the glasses case, and the glasses case is centered by the pushing plate 623 to prevent the glasses case from shifting. Then the heat-sealing strip 622 presses the upper and lower layers of packaging film to heat-seal, and then the heat-sealed glasses case is conveyed to the right to the cutting station by the second conveyor belt 54 and the third conveyor belt 57 to obtain an independently packaged glasses case.

[0050] See also Figure 1-Figure 10 When used specifically, step one is to drive the conveying sprocket 12 to rotate intermittently through the driving motor 14, and then the conveying sprocket 12 drives the conveying chain 13 to rotate clockwise, so that the conveying chain 13 drives the positioning mechanism 2 to move gradually to the right, and in the interval of the conveying chain 13 moving, the second conveying mechanism 3 is just aligned with one of the positioning mechanisms 2, and the glasses boxes are conveyed forward one by one through the second conveying mechanism 3, so that the glasses boxes slide onto the supporting platform 22.

[0051] Step 2, the conveyor chain 13 drives the base 21 to move to the right, at this time the second gear 287 is meshed with the first lower rack 281, and the first lower rack 281 is used to drive the second gear 287 to rotate clockwise, and then the second gear 287 drives the transmission rod 234 to rotate, and the transmission rod 234 drives the first lead screw 232 to rotate through the worm gear mechanism, so that the first slider 233 slides to the left along the first slide groove 231, and the first slider 233 is used to push the bottom end of the first support rod 237 to move close to the corresponding second support rod 238, and the angle between the first support rod 237 and the second support rod 238 gradually decreases, so that the first support rod 237 and the second support rod 238 push the sliding rod 236 to move upward, thereby lifting the right end of the supporting platform 22 upward, so that the glasses case can slide to the left along the supporting platform 22 and abut against the baffle 26.

[0052] Step three, the conveyor chain 13 continues to drive the base 21 to move to the right, at this time the second gear 287 is separated from the first lower rack 281, the first gear 286 is meshed with the second lower rack 282, the second lower rack 282 is used to drive the first gear 286 to rotate clockwise, and then the first gear 286 drives the bidirectional lead screw 252 to rotate, so that the front and rear second sliders 253 drive the clamping plate 24 to move toward the center of the supporting platform 22, so that the clamping plate 24 clamps and centers the glasses box front and back, and positions the glasses box front and back.

[0053] Step 4, the conveyor chain 13 continues to drive the base 21 to move to the right, at this time the first gear 286 is separated from the second lower rack 282, the second gear 287 is meshed with the first upper rack 283, the first upper rack 283 is used to drive the second gear 287 and the transmission rod 234 to rotate counterclockwise, the transmission rod 234 drives the first lead screw 232 to rotate in the opposite direction through the worm gear, so that the first slider 233 slides to the right along the first slide groove 231, and the first slider 233 is used to pull the bottom end of the first support rod 237 to move to the right, so that the first support rod 237 and the second support rod 238 pull the sliding rod 236 to move downward, so that the support platform 22 is restored to a horizontal state.

[0054] Step 5, the conveyor chain 13 continues to drive the base 21 to move to the right, at this time the second gear 287 is separated from the first upper rack 283, the first gear 286 is meshed with the second upper rack 284, and the second upper rack 284 is used to drive the first gear 286 and the bidirectional lead screw 252 to rotate counterclockwise, so that the second slider 253 drives the splint 24 to move away from the center of the supporting platform 22, so that the splint 24 releases the fixation on the glasses case.

[0055] Step 6, the conveyor chain 13 continues to drive the base 21 to move to the right. When the bearing platform 22 drives the glasses box to move to the conveying frame 2 52, the baffle 26 is used to push the glasses box to slide onto the conveying frame 2 52, and then the glasses box is driven to move to the right by the first conveyor belt 53. When the right end of the glasses box moves to the conveying frame 2 52, the third gear 288 is just engaged with the third upper rack 285. The third upper rack 285 is used to drive the third gear 288 and the rotating rod 271 to rotate counterclockwise, and then the rotating rod 271 drives the rotating gear 272 to rotate, so that the rotating gear 272 drives the tooth groove 273 and the baffle 26 to move downward, so that the baffle 26 is retracted into the interior of the bearing platform 22. When the right end of the glasses box enters between the front and rear limit assemblies 55, the baffle 26 is completely retracted into the bearing platform 22. Then the positioning mechanism 2 passes from the bottom of the conveying frame 2 52 and is driven by the conveyor chain 13 to move in a circular motion.

[0056] Step seven, drive the second conveyor belt 54 to rotate through the conveying sprocket 12, and then the second conveyor belt 54 drives the first conveyor belt 53 and the third conveyor belt 57 to rotate, and the first conveyor belt 53 drives the limiting roller 552 to rotate through the transmission rod 2 553. When the first conveyor belt 53 conveys the glasses box to the right, the limiting roller 552 limits the front and rear positions of the glasses box and drives the glasses box to the right until the glasses box is conveyed to the packaging film on the second conveyor belt 54, and then the second conveyor belt 54 will drive the packaging film and the glasses box to move to the right until the glasses box moves to the bottom of the rectangular frame 621.

[0057] Step eight, the rectangular frame 621 and the heat-sealing strip 622 are pushed downward by the electric push rod 61. Before the heat-sealing strip 622 presses and heat-seals the upper and lower layers of packaging film, the pushing plate 623 first contacts the glasses case, and the rebound force of the return spring 2 624 is used to push the pushing plate 623 to center the glasses case to prevent the glasses case from shifting. Then the heat-sealing strip 622 heat-seals the upper and lower layers of packaging film, and then the heat-sealed glasses case is conveyed to the right by the second conveyor belt 54 and the third conveyor belt 57.

[0058] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic contact lens packaging device, comprising a first conveying mechanism (1), the first conveying mechanism (1) comprising a mounting frame (11), a conveying sprocket (12) being rotatably mounted on the inner side of the mounting frame (11) from left to right, a conveying chain belt (13) being transmission-connected between the outer sides of the conveying sprocket (12), a driving motor (14) for driving the leftmost conveying sprocket (12) to rotate being mounted on the front end of the mounting frame (11), characterized in that: The conveyor chain belt (13) is provided with a plurality of positioning mechanisms (2) evenly distributed in the circumferential direction; A second conveying mechanism (3) is arranged at the rear side of the mounting frame (11), a gantry (4) is arranged at the right end of the mounting frame (11), a supporting crossbeam (41) is fixedly installed on the inner side of the gantry (4), a third conveying mechanism (5) is installed on the supporting crossbeam (41), and a heat-sealing packaging mechanism (6) is installed on the top of the gantry (4); The positioning mechanism (2) comprises a base (21) fixedly mounted on the conveyor chain (13), a bearing platform (22) being hingedly connected to the base (21), a lifting assembly (23) for driving the bearing platform (22) to rotate being mounted inside the base (21), and a clamping plate (24) being slidably mounted symmetrically frontward and rearward on the bearing platform (22); A clamping assembly (25) for pushing the clamping plate (24) to slide forward and backward is installed inside the bearing platform (22); a baffle (26) for sliding up and down is installed on the bearing platform (22); a lifting assembly (27) for driving the baffle (26) to move up and down is installed inside the bearing platform (22); and a driving assembly (28) for driving the lifting assembly (23), the clamping assembly (25), and the lifting assembly (27) is installed on the mounting frame (11); The lifting assembly (23) comprises a first slide groove (231) provided inside the base (21), a first lead screw (232) being rotatably mounted inside the first slide groove (231), a first slider (233) being externally threadedly connected to the first lead screw (232), the first slider (233) being slidably mounted inside the first slide groove (231), a transmission rod (234) being rotatably mounted inside the base (21), a rear end of the transmission rod (234) being transmission-connected to the first lead screw (232) via a worm gear mechanism, A sliding groove frame (235) is symmetrically fixedly connected to the bottom of the support platform (22) near the first sliding groove (231) in front and back, a sliding rod (236) is slidably installed between the front and rear sliding groove frames (235), a first support rod (237) is rotatably connected between the first sliding block (233) and the sliding rod (236), a second support rod (238) is rotatably connected between the sliding rod (236) and the base (21), and a transmission rod 1 (234) is located on a side of the first lead screw (232) away from the second support rod (238); The clamping assembly (25) comprises a second slide groove (251) symmetrically arranged on the top of the supporting platform (22) in a front-to-back manner, the clamping plate (24) is slidably installed in the corresponding second slide groove (251) in a front-to-back manner, a bidirectional lead screw (252) is rotatably installed inside the supporting platform (22), the front and rear ends of the bidirectional lead screw (252) are both threadedly connected with a second slider (253), the bottom end of the clamping plate (24) is fixedly connected to the corresponding second slider (253), and the second slider (253) is located on a side of the supporting platform (22) away from the corresponding first slide groove (231); The lifting assembly (27) comprises a rotating rod (271) rotatably mounted inside the bearing platform (22), a rotating gear (272) being fixedly connected to the rotating rod (271) symmetrically in the front and rear directions, a tooth groove (273) being symmetrically provided on a side of the baffle plate (26) close to the corresponding clamping plate (24), the rotating gear (272) being meshed with the corresponding tooth groove (273), and a return spring (274) being fixedly connected between the bottom of the baffle plate (26) and the inner wall of the bearing platform (22); The driving assembly (28) comprises a first lower rack (281) and a second lower rack (282) fixedly mounted on the top of the front side of the mounting frame (11); the second lower rack (282) is located on the right side of the first lower rack (281) and the two are arranged alternately front and back; a first upper rack (283) and a second upper rack (284) located above the top of the mounting frame (11) are fixedly mounted on the top of the front side of the mounting frame (11) via a support plate; the second upper rack (284) is located on the right side of the first upper rack (283) and the two are arranged alternately front and back; the first upper rack (283) is located on the right side of the second lower rack (282); a third upper rack (285) is fixedly mounted on the top of the rear side of the mounting frame (11) via a support plate; the third upper rack (285) is located above the top of the mounting frame (11) On the right side of the second upper rack (284), the front end of the transmission rod (234) extends to the front of the base (21) and is fixedly connected to a second gear (287), the lower side and the upper side of the second gear (287) are respectively meshed with the first lower rack (281) and the first upper rack (283), the front end of the bidirectional lead screw (252) extends to the front of the base (21) and is fixedly connected to a first gear (286), the lower side and the upper side of the first gear (286) are respectively meshed with the second lower rack (282) and the second upper rack (284), the rear end of the rotating rod (271) extends to the rear of the base (21) and is fixedly connected to a third gear (288), the third gear (288) is meshed with the third upper rack (285).

2. The automatic contact lens packaging equipment according to claim 1, characterized in that: The third conveying mechanism (5) comprises a conveying frame 1 (51) mounted on the top of the supporting crossbeam (41), a conveying frame 2 (52) being fixedly connected to the left side of the conveying frame 1 (51), a through hole (511) for the packaging film to pass through is provided between the conveying frame 1 (51) and the conveying frame 2 (52), the left end of the conveying frame 2 (52) is tilted downward, the bottom of the left end of the conveying frame 2 (52) is horizontally arranged and flush with the upper surface of the top bearing platform (22), a first conveying belt (53) is installed inside the conveying frame 2 (52), a second conveying belt (54) is installed inside the conveying frame 1 (51), a limiting assembly (55) is symmetrically installed on the top of the conveying frame 2 (52), a conveying frame 3 (56) located above the second conveying belt (54) is installed at the bottom of the horizontal section of the gantry (4), and a third conveying belt (57) is installed on the conveying frame 3 (56).

3. The automatic contact lens packaging equipment according to claim 2, characterized in that: The first conveyor belt (53), the second conveyor belt (54) and the third conveyor belt (57) are all composed of a plurality of conveyor rollers and a plurality of conveyor belts connected by transmission between the outsides of the conveyor rollers. The conveyor rollers in the first conveyor belt (53) rotate inside the second conveyor frame (52), the conveyor rollers in the second conveyor belt (54) are rotatably installed inside the first conveyor frame (51), and the conveyor rollers in the third conveyor belt (57) are rotatably installed inside the third conveyor frame (56). The conveyor rollers at the right end of the first conveyor belt (53) and the conveyor rollers at the left end of the second conveyor belt (54) are connected by belt transmission, the conveyor rollers at the right end of the third conveyor belt (57) and the conveyor rollers at the right end of the second conveyor belt (54) are connected by gear transmission, and the conveyor rollers at the left end of the second conveyor belt (54) are connected by belt transmission to the rightmost conveyor sprocket (12).

4. The automatic contact lens packaging equipment according to claim 3, characterized in that: The limiting assembly (55) comprises a limiting frame (551) fixedly mounted on the top of the second conveying frame (52); a plurality of limiting rollers (552) are rotatably mounted inside the limiting frame (551) at equal intervals on the left and right; adjacent limiting rollers (552) are connected via belt transmission; a transmission rod (553) is rotatably mounted on a side of the second conveying frame (52) away from the center of the first conveying belt (53); the transmission rod (553) is connected via a belt to the limiting roller (552) on the far left; the transmission rod (553) is connected via a bevel gear set to the conveying roller on the far left of the first conveying belt (53); a guide plate (554) located on the left side of the limiting frame (551) is fixedly mounted on the top of the left end of the second conveying frame (52); the front and rear guide plates (554) are arranged in an eight-shaped pattern with the small ends aligned between the front and rear limiting rollers (552).

5. The automatic contact lens packaging equipment according to claim 2, characterized in that: The heat-sealing packaging mechanism (6) comprises an electric push rod (61) fixedly mounted on the gantry (4) and located on the left side of the conveying frame three (56); the bottom of the telescopic section of the electric push rod (61) is fixedly connected to a heat-sealing assembly (62); the bottom of the conveying frame one (51) is rotatably mounted with a first film roller (63); and the bottom of the horizontal section of the gantry (4) is rotatably mounted with a second film roller (64) located on the upper left side of the conveying frame one (51).

6. The automatic contact lens packaging equipment according to claim 5, characterized in that: The heat sealing assembly (62) comprises a rectangular frame (621) fixedly mounted at the bottom of the telescopic section of the electric push rod (61); a U-shaped heat sealing strip (622) is fixedly mounted at the bottom of the rectangular frame (621); four vertical inner side walls of the rectangular frame (621) are hingedly connected with a pushing plate (623); and a second return spring (624) is fixedly connected between the pushing plate (623) and the corresponding vertical inner side wall of the rectangular frame (621).

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