A meal box production apparatus

Abstract

The application discloses a meal box production equipment, which comprises a rack, an upper die, a pair of lower dies and a matched driving mechanism, and the core improvement lies in that the pull-tab transmission mechanism is provided with a heating conveying roller and an embedded chain conveying structure, a cutting shaft and a cutter are integrated at the end of a conveying frame, a single motor+driving chain sprocket design is adopted for a driving system, and the driving of the upper and lower dies is realized through belt driving; the lower die is provided with a high-precision lifting assembly combined with a lead screw and a sliding rod; through the above structure, the pull-tab preheating and accurate conveying are realized, the forming and cutting are integrated, the driving is stable and energy-saving, the height of the lower die is accurately adjustable, and finally the meal box forming quality and the production automation level are improved, and the energy consumption and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of lunch box production equipment, specifically to a lunch box production equipment. Background Technology

[0002] With the development of the food delivery industry, the demand for disposable food containers has surged, placing higher demands on the efficiency, precision, and automation level of production equipment. Existing mainstream equipment mostly uses a "single upper mold + single lower mold" structure, which has significant drawbacks: poor production continuity, requiring waiting for material retrieval resulting in substantial idle time; lack of precise guidance and pre-treatment in the sheet conveying process, leading to easy deviation and cracking during molding; only capable of completing the molding process, with subsequent cutting requiring manual transfer, resulting in low automation; and drive mechanisms mostly using gear transmission or multiple independent drive sources, leading to high energy consumption and maintenance costs.

[0003] To improve efficiency, a dual-station lunchbox production equipment (application number: 202310489762.1) has been disclosed in the prior art. It discloses an alternating mold closing structure of "single upper mold + double lower mold", which initially solves the problem of waiting for single mold, but still has shortcomings: no sheet preheating and precise guiding mechanism is set, resulting in unstable molding quality; no cutting process is integrated, resulting in insufficient automation; the drive mechanism adopts direct drive with threaded rod, resulting in poor adjustment accuracy and operational stability.

[0004] Therefore, the development of a lunchbox production equipment that optimizes molding quality, integrates multiple processes, and operates stably has become an urgent need in the industry. Summary of the Invention

[0005] This utility model aims to solve one of the technical problems existing in the prior art.

[0006] This application provides a lunchbox production equipment, including a frame, an upper mold, and a pair of lower molds, and further including a pull tab transmission mechanism, an upper mold driving mechanism, and a pair of lower mold driving mechanisms installed on the frame. The pull tab transmission mechanism is used to transport pull tabs between the upper mold and the lower molds. The upper mold driving mechanism is used to drive the upper mold to move laterally and vertically in a direction perpendicular to the pull tab transmission. The pair of lower mold driving mechanisms are used to drive the corresponding lower molds to move alternately to the mold closing position opposite to the upper mold.

[0007] The sheet-pulling conveying mechanism includes a conveying frame, a pair of chain conveying assemblies, an input frame, and a pair of heated conveying rollers. The conveying frame has conveying grooves on its inner walls on opposite sides. The pair of heated conveying rollers are rotatably mounted on the input frame and driven to rotate in opposite directions by a drive assembly to preheat the sheet-pulling material and send it into the conveying groove. The pair of chain conveying assemblies are located on both sides of the conveying frame and each includes a chain. Each chain is correspondingly embedded in the conveying groove for conveying the preheated sheet-pulling material.

[0008] The chain transmission assembly also includes several transmission sprockets, which are respectively located at both ends of the inner side of the transmission frame and are rotatably installed. One of the transmission sprockets is driven by a motor, and the chain is in transmission cooperation with each transmission sprocket to rotate in the conveying groove.

[0009] The sheet-pulling and conveying mechanism also includes a cutting shaft and a pair of cutters. The cutting shaft is fixed to the end of the conveyor frame away from the heated conveyor roller via a pair of mounting brackets. The pair of cutters are mounted on both ends of the cutting shaft via corresponding cutter holders and are used to cut the sides of the molded lunchbox slices, so that the slices fall away from the heated roller end.

[0010] The drive assembly includes a drive chain and several drive sprockets, one of which is driven by a motor, two of which are respectively mounted at the ends of each heating conveyor roller, and the remaining drive sprockets are rotatably mounted on the outer wall of the input frame. The drive chain is connected to each drive sprocket in a transmission manner.

[0011] The upper mold driving mechanism includes a pair of upper slide rails, an upper slide table, a lifting slide rail, and a pair of drivers. The pair of upper slide rails are mounted on the top of the frame. The upper slide table is slidably mounted on the upper slide rails via corresponding sliders. The lifting slide rail is slidably mounted on the slide table via corresponding sliders. Its lower end is used to install the upper mold. The pair of drivers drive the slide table to move laterally and the lifting slide rail to move up and down, respectively.

[0012] The lower mold drive mechanism includes a pair of lower slide rails, a lower slide platform, and a lifting platform. The pair of lower slide rails are laid at the bottom of the frame. The lower slide platform is slidably mounted on the pair of lower slide rails by corresponding sliders and is driven to slide by a driver. The lifting platform is raised and lowered on the lower slide platform by a lifting assembly for mounting the lower mold.

[0013] The driver includes a drive belt and a pair of pulleys. The drive belt is connected to the pair of pulleys for transmission. One of the pulleys is driven by a motor. The pair of pulleys are rotatably mounted on the upper slide or frame. The drive belt is fixedly connected to the lifting slide or the lower slide.

[0014] The lifting assembly includes a lead screw, a mounting plate, a motor, and a pair of sliding rods. The pair of sliding rods slide vertically through one end of the lifting platform, with the bottom end fixed to the lower platform and the top end connected to the mounting plate. The motor is mounted on the mounting plate, and the lead screw is screwed to the mounting plate. The lower end is rotatably connected to the lower platform, and the upper end is driven to rotate by the motor on the mounting plate.

[0015] The two sets of lower slide rails of each lower die drive mechanism are located on both sides of the frame, and the end of each lifting platform away from the corresponding lead screw extends between the two sets of lower slide rails.

[0016] The beneficial effects of this utility model are as follows: 1. Through the structure of the heating conveyor roller and chain embedded in the conveying groove in the sheet pulling and conveying mechanism, the heating conveyor roller preheats the sheet evenly before it enters the forming area to improve its plasticity, and the chain restricts the sheet's deviation trajectory to ensure stable conveying. This produces the beneficial effects of reducing stress cracking during lunch box forming, avoiding mold misalignment, and greatly improving forming quality. 2. Through the cutting shaft and cutter assembly integrated at the end of the conveyor, the slices are precisely cut on both sides immediately after the lunch box is formed. The slices fall automatically under the action of gravity, realizing the integrated operation of "forming-cutting". This eliminates the manual transfer and cutting process, reduces losses and production costs, and improves the automation of the entire production process. 3. Through a single motor in conjunction with a drive chain and multiple sets of drive sprockets, and the belt drive method adopted by the upper and lower mold drive mechanism, the heating conveyor rollers are driven synchronously to rotate in opposite directions. The belt drive ensures smooth and low-noise movement, resulting in the beneficial effects of simplifying the equipment structure, reducing energy consumption, reducing wear on transmission components, and reducing equipment maintenance costs. 4. The lower mold lifting assembly is driven by a combination of a motor-driven lead screw and a slide bar. The motor precisely controls the rotation of the lead screw to adjust the lifting speed and height of the lifting platform. The slide bar guides and limits the lifting platform, which can flexibly adapt to the molding needs of different materials and different specifications of lunch boxes, avoid tilting during lifting, and ensure the accuracy of the upper and lower mold closing. Attached Figure Description

[0017] Figure 1 This is a perspective view of the lunchbox production equipment in the embodiments of this application; Figure 2 This is a perspective view of the pull-plate transmission mechanism in the embodiments of this application; Figure 3 This is a perspective view of the upper mold drive mechanism in the embodiments of this application; Figure 4 This is a perspective view of the lower mold drive mechanism in an embodiment of this application.

[0018] Figure Labels 1-Frame, 2-Pulling conveyor mechanism, 21-Transmitter frame, 22-Chain conveyor assembly, 221-Transmitter sprocket, 23-Input frame, 24-Heating conveyor roller, 25-Conveying trough, 26-Cutting shaft, 27-Cutter, 28-Cutter holder, 29-Drive assembly, 291-Drive chain, 292-Drive sprocket, 3-Upper mold drive mechanism, 31-Upper slide rail, 32-Upper slide table, 33-Lifting slide rail, 34-Driver, 341-Pulley, 4-Lower mold drive mechanism, 41-Lower slide rail, 42-Lower slide table, 43-Lifting table, 44-Lifting assembly, 441-Screw, 442-Mounting plate, 443-Slide rod. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] The lunchbox production equipment provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0022] Example 1: This application provides a lunchbox production equipment, including a frame 1, an upper mold and a pair of lower molds, and also includes a pull tab transmission mechanism 2, an upper mold driving mechanism 3 and a pair of lower mold driving mechanisms 4 installed on the frame 1. The pull tab transmission mechanism 2 is used to transport the pull tab between the upper mold and the lower mold. The upper mold driving mechanism 3 is used to drive the upper mold to move laterally and rise and fall in a direction perpendicular to the pull tab transmission. The pair of lower mold driving mechanisms 4 are used to drive the corresponding lower molds to move alternately to the mold closing position opposite to the upper mold.

[0023] like Figure 1 As shown, due to the above-mentioned structure, the pull sheet conveying mechanism 2 can realize continuous conveying of pull sheets. Combined with the lateral movement and lifting function of the upper mold drive mechanism 3, and the alternating mold closing design of a pair of lower molds, it effectively avoids the idle time of waiting for material to be picked up by a single lower mold, so that the lunch box forming process can be carried out continuously, significantly improving the production efficiency of the equipment. At the same time, the upper mold moves laterally along the direction perpendicular to the pull sheet conveying direction, which can accurately align with the alternating lower molds, ensuring the mold closing accuracy and improving the forming quality of the lunch box.

[0024] Example 2: In this embodiment, in addition to the structural features of the aforementioned embodiments, the sheet conveying mechanism 2 includes a conveying frame 21, a pair of chain conveying assemblies 22, an input frame 23, and a pair of heated conveying rollers 24. The conveying frame 21 has conveying grooves 25 on its inner walls on opposite sides. The pair of heated conveying rollers 24 are rotatably mounted on the input frame 23 and are driven to rotate in opposite directions by the driving assembly 29 to preheat the sheet and send it into the conveying grooves 25. The pair of chain conveying assemblies 22 are respectively disposed on both sides of the conveying frame 21, each including a chain. Each chain is correspondingly embedded in the conveying groove 25 for conveying the preheated sheet.

[0025] In this embodiment of the application, the chain transmission assembly 22 further includes a plurality of transmission sprockets 221, which are respectively disposed at both ends of the inner side of the transmission frame 21 and are rotatably installed. One of the transmission sprockets 221 is driven by a motor, and the chain is driven and cooperates with each transmission sprocket 221 to rotate in the conveying groove 25.

[0026] like Figure 2 As shown, due to the above structure, the heating conveyor roller 24 can complete the preheating treatment before the sheet enters the forming area, making the sheet material easier to shape and reducing stress cracking during forming. The design of the chain embedded in the conveyor groove 25 restricts the chain's offset trajectory, ensuring the stability of the sheet's position during conveying and avoiding misalignment of the mold due to sheet offset. The chain drive method driven by the conveyor sprocket 221 provides smooth power transmission, enabling uniform conveying of the sheet and precise coordination with subsequent mold closing actions, further improving production continuity.

[0027] Example 3: In this embodiment, in addition to the structural features of the aforementioned embodiments, the sheet conveying mechanism 2 also includes a cutting shaft 26 and a pair of cutters 27. The cutting shaft 26 is fixed to the end of the conveyor frame 21 away from the heated conveyor roller 24 via a pair of mounting brackets. The pair of cutters 27 are mounted on both ends of the cutting shaft 26 via corresponding cutter holders 28, and are used to cut the sides of the molded lunchbox slices, so that the slices fall away from the heated roller end.

[0028] like Figure 2 As shown, due to the above structure, the cutter 27 is precisely positioned at the end of the conveyor frame 21, which can immediately cut the slices on both sides after the lunch box is formed, realizing the integrated operation of "forming-cutting" and reducing the transfer cost of subsequent processes. The layout of the cutter 27 installed at both ends of the cutting shaft 26 can accurately match the width of the lunch box slices, avoiding material waste caused by cutting deviation. At the same time, the slices fall automatically under the action of gravity, which is convenient for subsequent collection devices to dock, improving the degree of production automation.

[0029] Example 4: In this embodiment, in addition to the structural features of the aforementioned embodiments, the drive assembly 29 includes a drive chain 291 and a plurality of drive sprockets 292, one of which is driven by a motor, two of which are respectively mounted at the ends of each heating conveyor roller 24, and the remaining drive sprockets 292 are rotatably mounted on the outer wall of the input frame 23. The drive chain 291 is connected to each drive sprocket 292 in a transmission connection.

[0030] like Figure 2 As shown, due to the above structure, a single motor can achieve synchronous counter-rotation of a pair of heating conveyor rollers 24 through the cooperation of the drive chain 291 and multiple sets of drive sprockets 292, without the need for a separate drive source, which simplifies the equipment structure and reduces energy consumption; the remaining drive sprockets 292 serve to tension the drive chain 291, preventing power transmission failure caused by chain slack, ensuring stable rotation speed of the heating conveyor rollers 24, and thus ensuring uniformity of sheet preheating and consistency of conveying speed.

[0031] Example 5: In this embodiment, in addition to the structural features of the aforementioned embodiments, the upper mold drive mechanism 3 includes a pair of upper slide rails 31, an upper slide table 32, a lifting slide rail 33, and a pair of drivers 34. The pair of upper slide rails 31 are mounted on the top of the frame 1. The upper slide table 32 is slidably mounted on the upper slide rails 31 via corresponding sliders. The lifting slide rail 33 is slidably mounted on the slide table via corresponding sliders, and its lower end is used to install the upper mold. The pair of drivers 34 respectively drive the upper slide table 32 to move laterally and the lifting slide rail 33 to move up and down.

[0032] In this embodiment of the application, the lower mold drive mechanism 4 includes a pair of lower slide rails 41, a lower slide platform 42 and a lifting platform 43. The pair of lower slide rails 41 are laid on the bottom of the frame 1. The lower slide platform 42 is slidably mounted on the pair of lower slide rails 41 by corresponding sliders and is driven to slide by the driver 34. The lifting platform 43 is lifted and lowered on the lower slide platform 42 by the lifting assembly 44 for mounting the lower mold.

[0033] In this embodiment of the application, the driver 34 includes a drive belt and a pair of pulleys 341. The drive belt is connected to the pair of pulleys 341 for transmission. One of the pulleys 341 is driven by a motor. The pair of pulleys 341 are rotatably mounted on the upper slide table 32 or the frame 1. The drive belt is fixedly connected to the lifting slide rail 33 or the lower slide table 42.

[0034] like Figure 3 and Figure 4As shown, due to the above-mentioned structure, the upper mold drive mechanism 3 achieves precise control of the horizontal movement and lifting of the upper mold through the cooperation of the upper slide rail 31 and the lifting slide rail 33. The belt drive of the driver 34 has low noise and smooth transmission, avoiding jamming when the upper mold moves. The design of the lower slide rail 41 and the lifting platform 43 of the lower mold drive mechanism 4 allows the lower mold to move horizontally to alternately close the mold, and can also make precise adjustments to its height through lifting to form a precise cooperation with the upper mold. The coordinated action of the upper and lower mold drive mechanisms 4, combined with the stable characteristics of the belt drive, further improves the mold closing accuracy and the reliability of equipment operation, while reducing equipment maintenance costs.

[0035] Example 6: In this embodiment, in addition to the structural features of the aforementioned embodiments, the lifting assembly 44 includes a lead screw 441, a mounting plate 442, a motor, and a pair of slide rods 443. The pair of slide rods 443 slide vertically through one end of the lifting platform 43, with the bottom end fixed to the lower platform 42 and the top end connected to the mounting plate 442. The motor is mounted on the mounting plate 442. The lead screw 441 is screwed to the mounting plate 442, with its lower end rotatably connected to the lower platform 42 and its upper end driven to rotate by the motor on the mounting plate 442.

[0036] In this embodiment of the application, the two sets of lower slide rails 41 of each lower mold drive mechanism 4 are respectively disposed on both sides of the frame 1, and the end of each lifting platform 43 away from the corresponding lead screw 441 extends to the space between the two sets of lower slide rails 41.

[0037] like Figure 4 As shown, due to the above-mentioned structure, the combined design of the lead screw 441 and the slide bar 443 enables the lifting movement of the lifting platform 43 to have both high precision and stability. The slide bar 443 plays a guiding and limiting role for the lifting platform 43, preventing tilting during the lifting process and ensuring accurate adjustment of the lower mold height. The layout of the lifting platform 43 extending between the two sets of lower slide rails 41 makes the installation position of the lower mold closer to the center area of ​​the equipment, shortening the alignment distance with the upper mold, and further improving the mold closing efficiency and precision. The transmission method of the motor directly driving the lead screw 441 to rotate provides direct power transmission, reduces energy loss, and facilitates the control of the lifting speed of the lifting platform 43 by the motor speed, adapting to the forming requirements of different material sheets.

[0038] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0039] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A lunchbox production equipment, comprising a frame, an upper mold, and a pair of lower molds, characterized in that, It also includes a pull tab transmission mechanism, an upper die driving mechanism, and a pair of lower die driving mechanisms mounted on the frame. The pull tab transmission mechanism is used to transport the pull tab between the upper die and the lower die. The upper die driving mechanism is used to drive the upper die to move laterally and rise and fall in a direction perpendicular to the pull tab transmission. The pair of lower die driving mechanisms are used to drive the corresponding lower dies to move alternately to the mold closing position opposite to the upper die.

2. The lunchbox production equipment according to claim 1, characterized in that, The sheet-pulling conveying mechanism includes a conveying frame, a pair of chain conveying assemblies, an input frame, and a pair of heated conveying rollers. The conveying frame has conveying grooves on its inner walls on opposite sides. The pair of heated conveying rollers are rotatably mounted on the input frame and driven to rotate in opposite directions by a drive assembly to preheat the sheet-pulling material and send it into the conveying groove. The pair of chain conveying assemblies are located on both sides of the conveying frame and each includes a chain. Each chain is correspondingly embedded in the conveying groove for conveying the preheated sheet-pulling material.

3. The lunchbox production equipment according to claim 2, characterized in that, The chain transmission assembly also includes several transmission sprockets, which are respectively located at both ends of the inner side of the transmission frame and are rotatably installed. One of the transmission sprockets is driven by a motor, and the chain is in transmission cooperation with each transmission sprocket to rotate in the conveying groove.

4. The lunchbox production equipment according to claim 2, characterized in that, The sheet-pulling and conveying mechanism also includes a cutting shaft and a pair of cutters. The cutting shaft is fixed to the end of the conveyor frame away from the heated conveyor roller via a pair of mounting brackets. The pair of cutters are mounted on both ends of the cutting shaft via corresponding cutter holders and are used to cut the sides of the molded lunchbox slices, so that the slices fall away from the heated roller end.

5. The lunchbox production equipment according to claim 2, characterized in that, The drive assembly includes a drive chain and several drive sprockets, one of which is driven by a motor, two of which are respectively mounted at the ends of each heating conveyor roller, and the remaining drive sprockets are rotatably mounted on the outer wall of the input frame. The drive chain is connected to each drive sprocket in a transmission manner.

6. The lunchbox production equipment according to claim 1, characterized in that, The upper mold driving mechanism includes a pair of upper slide rails, an upper slide table, a lifting slide rail, and a pair of drivers. The pair of upper slide rails are mounted on the top of the frame. The upper slide table is slidably mounted on the upper slide rails via corresponding sliders. The lifting slide rail is slidably mounted on the slide table via corresponding sliders. Its lower end is used to install the upper mold. The pair of drivers drive the slide table to move laterally and the lifting slide rail to move up and down, respectively.

7. The lunchbox production equipment according to claim 6, characterized in that, The lower mold drive mechanism includes a pair of lower slide rails, a lower slide platform, and a lifting platform. The pair of lower slide rails are laid at the bottom of the frame. The lower slide platform is slidably mounted on the pair of lower slide rails by corresponding sliders and is driven to slide by a driver. The lifting platform is raised and lowered on the lower slide platform by a lifting assembly for mounting the lower mold.

8. A lunchbox production equipment according to claim 6 or 7, characterized in that, The driver includes a drive belt and a pair of pulleys. The drive belt is connected to the pair of pulleys for transmission. One of the pulleys is driven by a motor. The pair of pulleys are rotatably mounted on the upper slide or frame. The drive belt is fixedly connected to the lifting slide or the lower slide.

9. A lunchbox production equipment according to claim 7, characterized in that, The lifting assembly includes a lead screw, a mounting plate, a motor, and a pair of sliding rods. The pair of sliding rods slide vertically through one end of the lifting platform, with the bottom end fixed to the lower platform and the top end connected to the mounting plate. The motor is mounted on the mounting plate, and the lead screw is screwed to the mounting plate. The lower end is rotatably connected to the lower platform, and the upper end is driven to rotate by the motor on the mounting plate.

10. A lunchbox production equipment according to claim 9, characterized in that, The two sets of lower slide rails of each lower die drive mechanism are located on both sides of the frame, and the end of each lifting platform away from the corresponding lead screw extends to the space between the two sets of lower slide rails.

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