Moving buckle egg packaging box forming mold

By designing a modular egg carton forming mold, the problems of inaccurate mold closing and unstable conveying in traditional molds were solved, achieving efficient and stable egg carton forming, and improving the quality of finished products and production efficiency.

CN121848649APending Publication Date: 2026-04-14TIANJIN JINRONG TIANCHENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-17
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Traditional egg carton molding molds are prone to horizontal offset and vertical misalignment during mold closing, resulting in uneven egg carton wall thickness, corner collapse, low finished product qualification rate, and mismatch between conveying components and molding action, which restricts the improvement of production efficiency.

Method used

The mold for forming egg packaging boxes with movable buckles includes forming components, conveying components, and limiting components. A servo motor drives the gears and pulleys to achieve precise movement and stable extrusion forming of the upper mold. Combined with springs and rollers for limiting, it ensures precise mold docking and stable conveying.

Benefits of technology

It improves the accuracy and efficiency of egg carton forming, reduces mold offset and jamming, and enhances the finished product qualification rate and the operational stability of the production line.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a movable buckle egg packaging box forming mold, and relates to the technical field of egg packaging box forming, the movable buckle egg packaging box forming mold comprises a lower mold, the lower mold is fixedly mounted on the bottom surface of a storage plate, the storage plate is arranged in a frame, and supporting plates are fixedly connected to the middles of the two sides of the frame; a control switch is fixedly installed on the surface of the supporting plate, the bottom end of the supporting plate is fixedly connected to the machining table, the forming assembly is arranged on the machining table and used for being matched with an upper mold for use, the conveying assembly is arranged on the machining table for being matched with the machining table for use, and the limiting assembly is arranged on the conveying assembly. The limiting assembly is arranged on the conveying assembly to be used in cooperation with the conveying assembly. The device is reasonable in structure, the lower mold can be conveniently moved to the bottom position of the upper mold through the conveying assembly and the limiting assembly, softened plastic is extruded into an egg box shape, and the production efficiency is improved.
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Description

Technical Field

[0001] This invention relates to the field of egg packaging box forming technology, and in particular to a mold for forming a movable buckle egg packaging box. Background Technology

[0002] An egg carton is a container used to package and protect eggs. It is typically made from recycled plastic and has multiple compartments, each holding one egg. The design of the egg carton aims to maintain the integrity and freshness of the eggs, preventing them from being bumped, broken, or spoiled during transportation. Generally, egg cartons are also labeled with relevant information such as the egg's origin, shelf life, and grade. Egg cartons play an important role in the sale and storage of eggs.

[0003] A Chinese utility model patent application (CN221717803U) discloses an egg packaging box forming machine, comprising a control console and an upper mold. Uprights are installed at the four corners of the upper surface of the control console, and a top plate is mounted on the top of the four uprights. A lower mold is mounted on the upper surface of the control console, with pins installed at the four corners of the bottom of the lower mold. Insertion holes for the pins are provided on the upper surface of the control console. A heating plate is slidably mounted on the upper side of the control console via a linear motion module, which is mounted on the lower surface of the top plate. A hydraulic cylinder is mounted on the upper surface of the top plate, with its extension end extending to the lower side of the top plate. A first mounting plate is installed at the end of the extension end of the hydraulic cylinder. The connecting mechanism allows for rapid replacement of the upper mold, reducing production line downtime and improving production efficiency. Furthermore, when the hydraulic cylinder lowers the upper mold for pressing, a fixing mechanism can clamp and secure the plastic sheet, improving the yield rate.

[0004] Some problems still exist in actual processing.

[0005] The core of plastic egg carton molding lies in the precise mold closing and the stable linkage of the conveying system. In traditional molding processes, the upper and lower molds are mostly rigidly connected structures, lacking the precise constraints of dedicated limiting components. This easily leads to problems such as horizontal offset and vertical misalignment during mold closing, resulting in uneven egg carton wall thickness, corner collapse, and a low finished product qualification rate. At the same time, traditional conveying components often use an intermittent transmission mode, which is not matched with the rhythm of the molding action, easily causing mold waiting or conveying jams, thus hindering the improvement of production efficiency. Summary of the Invention

[0006] The purpose of this application is to provide a movable egg packaging box forming mold, which enables the lower mold to be easily moved to the bottom position of the upper mold through the conveying component and the limiting component, so as to extrude the softened plastic into the shape of an egg box and improve production efficiency.

[0007] To achieve the above objectives, this application provides the following technical solution: a mold for forming a movable egg packaging box, including a lower mold, the lower mold being fixedly installed on the bottom surface of a shelf, the shelf being disposed inside a frame, a support plate being fixedly connected to the middle of both sides of the frame, a control switch being fixedly installed on the surface of the support plate, and the bottom end of the support plate being fixedly connected to a processing table.

[0008] It also includes a molding component, a conveying component, and a limiting component. The molding component is mounted on the processing table for use with the upper mold. The conveying component is mounted on the processing table for use with the upper mold. The limiting component is mounted on the conveying component for use with the upper mold.

[0009] Preferably, the molding component includes a crossbeam fixedly installed at the middle position of the inner wall of the frame, a rod is movably inserted at the middle position of the top surface of the crossbeam, a collar is fixedly connected to the top end of the rod, a spring is sleeved on the rod, and the two ends of the spring are fixedly connected to the top surface of the crossbeam and the bottom surface of the collar, respectively.

[0010] Preferably, the bottom end of the rod is fixedly connected to the mounting frame, and the mounting frame has movable grooves on both sides. A positioning block is slidably connected inside the movable groove, and the positioning block is fixedly installed on the inner wall of the frame.

[0011] Preferably, the conveying assembly includes a pair of side plates fixedly installed on both sides of the top surface of the processing table. The pair of side plates are provided with through grooves. Shaft seats are fixedly connected to both ends of the outer surface of the pair of side plates. Slide rods are fixedly connected to the shaft seats. Pullers are rotatably connected to the surface of the slide rods. The pullers are rotatably connected to the mounting plate.

[0012] Preferably, the mounting plate is fixedly installed in the middle of the slider, and the slider is slidably connected inside the through groove. One end of the slider is fixedly installed in the middle of the frame. The frame is provided with a pair of frames, and a horizontal plate is fixedly connected between the inner walls of the two ends of the pair of frames. A second toothed disc is fixedly connected to the middle of the bottom surface of the horizontal plate.

[0013] Preferably, a second gear is engaged at one end of the bottom surface of the second gear disk, the second gear is fixedly connected to the middle end of the driven rod, and the two ends of the driven rod are rotatably connected to the side plate.

[0014] Preferably, a first pulley is fixedly connected to one end of the driven rod, a transmission belt is sleeved on the first pulley, the other end of the transmission belt is sleeved on a second pulley, the second pulley is fixedly connected to one end of the drive rod, the other end of the drive rod is fixedly connected to the output end of the servo motor, and the servo motor is fixedly mounted on the processing table.

[0015] Preferably, the limiting component includes a pair of crossbars fixedly connected between the frame bodies, a linkage plate rotatably connected to the pair of crossbars, the other end of the linkage plate rotatably connected to one end of the horizontally positioned shelf, the shelf being provided with a pair, a support plate being fixedly installed between the middle positions of the top surfaces of the shelf, and an upper mold being installed on the top surface of the support plate.

[0016] Preferably, the side seats are located at the middle of both sides of the bottom surface of the tray, and a fixing rod is fixedly connected to the side seat. One end of the fixing rod is rotatably connected to a roller, and the roller is slidably connected inside the limiting frame. A positioning plate is fixedly connected to the bottom surface of the limiting frame, and one end of the positioning plate is fixedly connected to the outer surface of the side plate.

[0017] In summary, the present invention has the following beneficial effects:

[0018] 1. The present invention has a reasonable structure. When the upper mold moves to the bottom position of the lower mold, the upper mold squeezes the lower mold. Then, the placement plate pushes the rod to move. A spring is sleeved on the rod. The movement of the placement plate causes the collar on the rod to pull the spring. Then, the positioning block slides inside the movable groove, increasing the stability of the movement of the placement plate and making the lower mold and upper mold fit together to squeeze and shape the egg carton.

[0019] 2. In this invention, when the frame is moved to the bottom position of the lower mold, the drive rod is rotated by the operation of the servo motor. The rotation of the drive rod drives the second pulley to rotate. The rotation of the second pulley drives the first pulley to rotate through the transmission belt, thereby facilitating the rotation of the driven rod on the first pulley. A second gear is fixedly installed in the middle of the driven rod, and the second gear meshes with the second gear plate. The rotation of the second gear causes the second gear plate to move the frame on the horizontal plate to the bottom position of the lower mold.

[0020] 3. In this invention, when the frame moves, the carrying rack moves via the linkage plate on the crossbar. A support plate is fixedly installed at the top of the carrying rack, and an upper mold is mounted on the support plate. Softened plastic is placed on the upper mold, and then the movement of the support plate causes the fixed rod on the side seat to move. A roller is rotatably connected to one end of the fixed rod, and a limit frame is slidably connected inside the roller. The movement of the support plate causes the roller to slide inside the limit frame. When the support plate moves to the bottom position of the lower mold base, the roller slides to one end of the limit frame and moves upward, thereby facilitating the transfer of the softened plastic from the upper mold to the lower mold for extrusion molding. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the lower mold;

[0023] Figure 2 This is a schematic diagram of the rear three-dimensional structure of the lower mold;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the lower mold viewed from below;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the rotating rod;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the processing table;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the frame;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the upper mold.

[0029] In the diagram: 1. Lower mold; 101. Shelf; 102. Frame; 103. Support plate; 104. Control switch; 105. Machining table; 2. Cross frame; 201. Rod; 202. Collar; 203. Spring; 204. Mounting bracket; 205. Movable groove; 206. Positioning block; 3. Side plate; 301. Through groove; 302. Shaft seat; 303. Slide rod; 304. Pulley; 305. Mounting plate; 306. Slider; 307. Frame body 308. Horizontal plate; 309. Second gear plate; 310. Second gear; 311. Driven rod; 312. First pulley; 313. Transmission belt; 314. Second pulley; 315. Drive rod; 316. Servo motor; 4. Crossbar; 401. Linkage plate; 402. Carrying rack; 403. Support plate; 404. Upper mold; 405. Side seat; 406. Fixed rod; 407. Roller; 408. Limiting frame; 409. Positioning plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example: Reference Figure 1 - Figure 7 The illustrated movable egg packaging box forming mold includes a lower mold 1, which is fixedly installed on the bottom surface of a shelf 101. The shelf 101 is located inside a frame 102. Support plates 103 are fixedly connected to the middle of both sides of the frame 102. A control switch 104 is fixedly installed on the surface of the support plate 103. The bottom end of the support plate 103 is fixedly connected to a processing table 105. The mold also includes a forming component, a conveying component, and a limiting component. The forming component is set on the processing table 105 and is used in conjunction with the upper mold 404. The conveying component is set on the processing table 105 and is used in conjunction with the upper mold 404. The limiting component is set on the conveying component and is used in conjunction with the upper mold 404.

[0032] Specifically, it should be noted that the servo motor 316 is electrically connected to the control unit via wires, and the specific working method between them is based on existing technology, which will not be elaborated on here.

[0033] In one embodiment of this invention, the molding assembly includes a crossbeam 2 fixedly installed in the middle of the inner wall of the frame 102. A rod 201 is movably inserted into the middle of the top surface of the crossbeam 2. A collar 202 is fixedly connected to the top of the rod 201. A spring 203 is sleeved on the rod 201. The two ends of the spring 203 are fixedly connected to the top surface of the crossbeam 2 and the bottom surface of the collar 202, respectively. The bottom end of the rod 201 is fixedly connected to the mounting bracket 204. Movable grooves 205 are provided on both sides of the mounting bracket 204. A positioning block 206 is slidably connected inside the movable groove 205. The positioning block 206 is fixedly installed on the inner wall of the frame 102.

[0034] Specifically, when the upper mold 404 moves to the bottom position of the lower mold 1, the upper mold 404 squeezes the lower mold 1, and then the placement plate 101 pushes the rod 201 to move. A spring 203 is sleeved on the rod 201. The movement of the placement plate 101 causes the collar 202 on the rod 201 to pull the spring 203. Then the positioning block 206 slides inside the movable groove 205 to increase the stability of the movement of the placement plate 101, so that the lower mold 1 and the upper mold 404 fit together to squeeze and shape the egg carton.

[0035] As one embodiment of this invention, the conveying assembly includes a pair of side plates 3 fixedly installed on both sides of the top surface of the processing table 105. The pair of side plates 3 are provided with through grooves 301. The two ends of the outer surface of the pair of side plates 3 are fixedly connected to bearing seats 302. The bearing seats 302 are fixedly connected to slide rods 303. The surface of the slide rods 303 is rotatably connected to pulleys 304. The pulleys 304 are rotatably connected to the mounting plate 305. The mounting plate 305 is fixedly installed in the middle of the slider 306. The slider 306 is slidably connected inside the through grooves 301. One end of the slider 306 is fixedly installed in the middle of the frame 307. The frame 307 is provided with a pair of cross plates 308 fixedly connected between the inner walls of the two ends of the pair of frame 307. A second gear 309 is fixedly connected in the middle of the bottom surface of the cross plate 308. A second gear 310 is meshed in the bottom surface of the second gear 309. The second gear 310 is fixedly connected to the middle end of the driven rod 311. The two ends of the driven rod 311 are rotatably connected to the side plate 3. A first pulley 312 is fixedly connected to one end of the driven rod 311. A transmission belt 313 is sleeved on the first pulley 312. The other end of the transmission belt 313 is sleeved on the second pulley 314. The second pulley 314 is fixedly connected to one end of the drive rod 315. The other end of the drive rod 315 is fixedly connected to the output end of the servo motor 316. The servo motor 316 is fixedly installed on the processing table 105.

[0036] Specifically, when the frame 307 is moved to the bottom position of the lower mold 1, the operation of the servo motor 316 causes the drive rod 315 to rotate. The rotation of the drive rod 315 drives the second pulley 314 to rotate. The rotation of the second pulley 314 drives the first pulley 312 to rotate through the transmission belt 313, thereby facilitating the rotation of the driven rod 311 on the first pulley 312. A second gear 310 is fixedly installed in the middle of the driven rod 311, and the second gear 310 meshes with the second gear plate 309. The rotation of the second gear 310 causes the second gear plate 309 to move the frame 307 on the horizontal plate 308 to the bottom position of the lower mold 1.

[0037] As one embodiment of this invention, the limiting component includes a pair of horizontal bars 4 fixedly connected between the frame bodies 307. A linkage plate 401 is rotatably connected to the pair of horizontal bars 4. The other end of the linkage plate 401 is rotatably connected to one end of a horizontally positioned shelf 402. The shelf 402 is provided with a pair of shelves. A support plate 403 is fixedly installed between the middle positions of the top surfaces of the shelf 402. An upper mold 404 is installed on the top surface of the support plate 403. Side seats 405 are located at the middle positions of the two sides of the bottom surface of the support plate 403. A fixing rod 406 is fixedly connected to the side seat 405. A roller 407 is rotatably connected to one end of the fixing rod 406. The roller 407 is slidably connected inside the limiting frame 408. A positioning plate 409 is fixedly connected to the bottom surface of the limiting frame 408. One end of the positioning plate 409 is fixedly connected to the outer surface of the side plate 3.

[0038] Specifically, when the frame 307 moves, the linkage plate 401 on the crossbar 4 drives the carrier 402 to move. A support plate 403 is fixedly installed at the top of the carrier 402, and an upper mold 404 is installed on the support plate 403. The softened plastic is placed on the upper mold 404. Then, the movement of the support plate 403 causes the fixing rod 406 on the side seat 405 to move. A roller 407 is rotatably connected to one end of the fixing rod 406, and a limit frame 408 is slidably connected inside the roller 407. The movement of the support plate 403 causes the roller 407 to slide inside the limit frame 408. When the support plate 403 moves to the bottom position of the lower mold 1, the roller 407 slides to one end of the limit frame 408 and moves upward, thereby facilitating the transfer of the softened plastic from the upper mold 404 to the lower mold 1 for extrusion molding.

[0039] The working principle of this invention is as follows: When the upper mold 404 moves to the bottom position of the lower mold 1, the upper mold 404 squeezes the lower mold 1. Then, the placement plate 101 pushes the rod 201 to move. A spring 203 is sleeved on the rod 201. The movement of the placement plate 101 causes the collar 202 on the rod 201 to pull the spring 203. Then, the positioning block 206 slides inside the movable groove 205, increasing the stability of the movement of the placement plate 101, so that the lower mold 1 and the upper mold 404 fit together to squeeze and shape the egg carton.

[0040] When the frame 307 is moved to the bottom position of the lower mold 1, the operation of the servo motor 316 causes the drive rod 315 to rotate. The rotation of the drive rod 315 drives the second pulley 314 to rotate. The rotation of the second pulley 314 drives the first pulley 312 to rotate through the transmission belt 313, thereby facilitating the rotation of the driven rod 311 on the first pulley 312. A second gear 310 is fixedly installed in the middle of the driven rod 311, and the second gear 310 meshes with the second gear plate 309. The rotation of the second gear 310 causes the second gear plate 309 to move the frame 307 on the horizontal plate 308 to the bottom position of the lower mold 1.

[0041] When the frame 307 moves, the linkage plate 401 on the crossbar 4 drives the carrier 402 to move. A support plate 403 is fixedly installed at the top of the carrier 402, and an upper mold 404 is installed on the support plate 403. The softened plastic is placed on the upper mold 404. Then, the movement of the support plate 403 causes the fixed rod 406 on the side seat 405 to move. A roller 407 is rotatably connected to one end of the fixed rod 406, and a limit frame 408 is slidably connected inside the roller 407. The movement of the support plate 403 causes the roller 407 to slide inside the limit frame 408. When the support plate 403 moves to the bottom position of the lower mold 1, the roller 407 slides to one end of the limit frame 408 and moves upward, thereby facilitating the extrusion molding of the softened plastic on the upper mold 404 into the lower mold 1.

[0042] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mold for forming a movable egg packaging box, characterized in that, include: The lower mold (1) is fixedly installed on the bottom surface of the shelf (101). The shelf (101) is located inside the frame (102). Support plates (103) are fixedly connected to the middle of both sides of the frame (102). A control switch (104) is fixedly installed on the surface of the support plate (103). The bottom end of the support plate (103) is fixedly connected to the processing table (105). It also includes a molding component, a conveying component and a limiting component. The molding component is disposed on the processing table (105) for use with the upper mold (404). The conveying component is disposed on the processing table (105) for use with the mold. The limiting component is disposed on the conveying component for use with the mold.

2. The movable snap-lock egg packaging box forming mold according to claim 1, characterized in that: The molding assembly includes a crossbeam (2) fixedly installed in the middle of the inner wall of the frame (102). A rod (201) is movably inserted in the middle of the top surface of the crossbeam (2). A collar (202) is fixedly connected to the top of the rod (201). A spring (203) is sleeved on the rod (201). The two ends of the spring (203) are fixedly connected to the top surface of the crossbeam (2) and the bottom surface of the collar (202), respectively.

3. The movable snap-lock egg packaging box forming mold according to claim 2, characterized in that: The bottom end of the rod (201) is fixedly connected to the mounting bracket (204). Movable grooves (205) are provided on both sides of the mounting bracket (204). A positioning block (206) is slidably connected inside the movable groove (205). The positioning block (206) is fixedly installed on the inner wall of the frame (102).

4. The movable snap-lock egg packaging box forming mold according to claim 2, characterized in that: The conveying assembly includes a pair of side plates (3) fixedly installed on both sides of the top surface of the processing table (105). The pair of side plates (3) are provided with through grooves (301). The two ends of the outer surface of the pair of side plates (3) are fixedly connected to bearing seats (302). The bearing seats (302) are fixedly connected to slide rods (303). The surface of the slide rods (303) is rotatably connected to pulleys (304). The pulleys (304) are rotatably connected to the mounting plate (305).

5. The mold for forming a movable egg packaging box according to claim 4, characterized in that: The mounting plate (305) is fixedly installed in the middle of the slider (306). The slider (306) is slidably connected inside the through groove (301). One end of the slider (306) is fixedly installed in the middle of the frame (307). The frame (307) is provided with a pair of horizontal plates (308) fixedly connected between the inner walls of the two ends of the pair of frame (307). A second toothed disc (309) is fixedly connected in the middle of the bottom surface of the horizontal plate (308).

6. The mold for forming a movable egg packaging box according to claim 5, characterized in that: The second gear (310) is engaged at one end of the bottom surface of the second gear disk (309). The second gear (310) is fixedly connected to the middle end of the driven rod (311). The two ends of the driven rod (311) are rotatably connected to the side plate (3).

7. The movable snap-lock egg packaging box forming mold according to claim 6, characterized in that: One end of the driven rod (311) is fixedly connected to a first pulley (312), and a transmission belt (313) is sleeved on the first pulley (312). The other end of the transmission belt (313) is sleeved on a second pulley (314). The second pulley (314) is fixedly connected to one end of the drive rod (315), and the other end of the drive rod (315) is fixedly connected to the output end of the servo motor (316). The servo motor (316) is fixedly installed on the processing table (105).

8. The mold for forming a movable egg packaging box according to claim 5, characterized in that: The limiting component includes a pair of crossbars (4) fixedly connected between the frame (307), and a linkage plate (401) is rotatably connected to the pair of crossbars (4). The other end of the linkage plate (401) is rotatably connected to one end of a horizontal shelf (402). The shelf (402) is provided with a pair of trays (403) fixedly installed between the middle positions of the top surfaces of the shelf (402). An upper mold (404) is installed on the top surface of the tray (403).

9. The mold for forming a movable egg packaging box according to claim 8, characterized in that: The side seats (405) are located at the middle of the bottom surface of the tray (403). A fixing rod (406) is fixedly connected to the side seat (405). A roller (407) is rotatably connected to one end of the fixing rod (406). The roller (407) is slidably connected inside the limiting frame (408). A positioning plate (409) is fixedly connected to the bottom surface of the limiting frame (408). One end of the positioning plate (409) is fixedly connected to the outer surface of the side plate (3).

Citation Information

Patent Citations

  • Egg packaging box forming tool

    CN221717803U