Experimental animal feed double-layer vacuum package automatic pushing device

Abstract

The utility model discloses an experimental animal feed double-layer vacuum package automatic pushing device which comprises a first conveyor, a second conveyor, a lifting platform, a pushing assembly, a third conveyor, a grabbing assembly, a fourth conveying mechanism, a sealing mechanism and a fifth conveying mechanism which are sequentially arranged. Wherein two groups of the first conveyor, the second conveyor, the third conveyor, the fourth conveying mechanism, the sealing mechanism and the fifth conveying mechanism are arranged side by side. According to the double-layer vacuum shaping packaging machine, double-layer vacuum shaping packaging is met, automatic bag feeding, bag pushing and bagging and vacuumizing sealing of a second-layer packaging bag are achieved, the steps can be completed in one device, the occupied space is saved, and the packaging efficiency is improved; meanwhile, the double-layer packaging bag achieves independent vacuum packaging, double protection is achieved, contamination of microorganisms in product contents is avoided, a flat packaging form is formed, the risk probability of bumping and bag breaking is reduced, and the bag breaking protection effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging, and relates to a double-layer vacuum packaging method, in particular to an automatic pushing device for double-layer vacuum packaging of experimental animal feed. Background Art

[0002] Vacuum-packing SPF-grade laboratory animal feed reduces air oxidation and prevents contamination by environmental microorganisms, thus preserving product freshness. However, the pellets of laboratory animal feed are hard and can easily break and leak due to friction and collision during transportation and handling. The objective factors affecting transportation, handling, and loading and unloading are complex, making it costly and ineffective for laboratory animal feed manufacturers to manage these risks. Therefore, developing packaging that can enhance the product's resistance to transportation and handling risks, as well as automated packaging equipment, is crucial.

[0003] The common vacuum packaging process on the market involves filling, vacuuming, and sealing. Laboratory animal feed has its own unique characteristics: large, hard particles, and an uneven, angular surface. Conventional vacuum packaging is prone to breakage and leakage. To reduce this, double-layer vacuum packaging is used. However, due to the irregular shape of traditional vacuum packaging, automated packaging is difficult. Utility Model Content

[0004] The utility model provides an automatic pushing device for double-layer vacuum packaging of experimental animal feed in order to solve the technical problems of low automation level and easy breakage and air leakage of vacuum bags in the existing vacuum packaging technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an automatic pushing device for double-layer vacuum packaging of experimental animal feed, comprising:

[0007] The first conveyor comprises two groups of conveyors arranged side by side on the left and right sides for conveying the once-vacuum-shaped packaged experimental animal feed in the bag;

[0008] A second conveyor, comprising two groups of second conveyors, arranged side by side at the tail end of the first conveyor, for receiving and temporarily storing the bagged experimental animal feed conveyed by the first conveyor;

[0009] A lifting platform, which is longitudinally arranged at the tail end of the two sets of the second conveyors, is used to receive the once-bagged experimental animal feed conveyed from the second conveyors and lift it to a certain height;

[0010] A pushing assembly is disposed transversely between the two second conveyors, and is provided with a push plate mechanism on its left and right sides, for pushing the once-bagged experimental animal feed lifted on the lifting platform into the second packaging bag on the downstream third conveyor;

[0011] The third conveyor comprises two groups of third conveyors, which are arranged side by side on the left and right sides of the rear side of the lifting platform, and each of which has an open second packaging bag placed at the front end thereof, for receiving the first bagged experimental animal feed on the lifting platform to form a second bagged experimental animal feed;

[0012] The grabbing assembly includes two sets of bag picking mechanisms, which are connected to the robotic arm and are used to grab the second packaging bag and transfer it to the front end of the third conveyor, and the bag opening of the second packaging bag is arranged in an open shape toward the pushing assembly.

[0013] Preferably, at least one first compressed air blowing nozzle is provided on one side wall of the lifting platform, the first compressed air blowing nozzle is externally connected to an air compressor, and the air outlet of the first compressed air blowing nozzle is facing the bag opening of the second packaging bag at the front end of the third conveyor when the lifting platform rises to a preset position.

[0014] More preferably, at least one second compressed air blowing nozzle is arranged directly above the connection position between the second conveyor belt and the lifting platform, the second compressed air blowing nozzle is externally connected to an air compressor, and the air outlet of the second compressed air blowing nozzle is arranged downward.

[0015] Preferably, the pusher assembly includes a mounting frame, an X-axis moving mechanism and the push plate mechanism, wherein:

[0016] The mounting frame is a square frame structure, and both sides of its lower end are fixedly mounted on the rack between the left and right first conveyors and / or the second conveyors;

[0017] The X-direction moving mechanism is movably mounted in the mounting frame, and the push plate mechanisms are symmetrically mounted on the left and right sides thereof, respectively, for driving the push plate mechanisms to move forward and backward;

[0018] The front end of the push plate mechanism is provided with two groups of first connecting rods with an inverted F-shaped structure, the front end of the first connecting rod is provided with a retractable second connecting rod, the front end of the second connecting rod is vertically provided with a square push plate, and a buffer spring is sleeved on it.

[0019] Preferably, the pusher assembly further includes a Z-direction moving mechanism and a Y-direction moving mechanism, wherein:

[0020] The Z-direction moving mechanism is installed in the installation frame in a liftable manner, and the X-direction moving mechanism is installed on it for driving the X-direction moving mechanism to adjust up and down;

[0021] The Y-direction moving mechanism is composed of two groups, which are respectively installed on the left and right sides of the X-direction moving mechanism in a left-right symmetrical manner, and are used to drive the X-direction moving mechanism to adjust left and right.

[0022] Preferably, the level of the third conveyor is higher than that of the second conveyor and lower than that of the push plate mechanism above its front end.

[0023] Preferably, the grabbing assembly further comprises two groups of suction cups, each group comprising two suction cups, which are installed at intervals at the front end positions corresponding to the third conveyor, and are used to cooperate with the bag-taking mechanism to open the bag opening of the second packaging bag.

[0024] Preferably, the automatic pushing device for double-layer vacuum packaging of experimental animal feed further includes a fourth conveying mechanism, which is arranged longitudinally, and the left side of its front end is connected to the rear ends of the two groups of third conveyors, and is used to receive the secondary bagged experimental animal feed on the third conveyors and convey it to the sealing mechanism position at the rear end;

[0025] Preferably, the automatic pushing device for double-layer vacuum packaging of experimental animal feed further includes a sealing mechanism, wherein the sealing mechanism comprises two groups, which are arranged side by side on the right side of the tail end of the fourth conveying mechanism, and are respectively used for vacuuming and sealing the opened secondary bagged experimental animal feed;

[0026] Preferably, the automatic pushing device for double-layer vacuum packaging of experimental animal feed also includes a fifth conveying mechanism, which is divided into two groups and is arranged side by side on the left side of the tail end of the fourth conveying mechanism, and is arranged corresponding to the two sealing mechanisms on the other side, and is used to convey the secondary bagged experimental animal feed after vacuuming and sealing to the next process.

[0027] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0028] The utility model provides an automatic pushing device for double-layer vacuum packaging of experimental animal feed, which can meet the requirements of double-layer vacuum shaping packaging, realize automatic bagging of the second layer of packaging bags, push bags into bags, vacuum sealing, and complete the above steps in one device, saving space, high degree of automation, and significantly improving packaging efficiency; at the same time, in order to ensure the smooth secondary packaging of the product, the inner packaging bag opening is blown and arranged to make the inner and outer bags fit together in size, which is more conducive to subsequent vacuuming and sealing, and also increases the aesthetics after packaging, ensuring the consistency of packaging; in summary, the double-layer vacuum shaping packaging structure prepared by the automatic packaging equipment, the double-layer packaging bags are independently vacuum packaged, meeting the requirements of double protection, and as long as one layer of packaging is intact, the contamination of microorganisms in the product contents can be avoided. In addition, the shaping also creates a flat packaging shape, reduces the risk probability of bumping and breaking the bag, and improves the protection effect of breaking the bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional schematic diagram of the utility model of an automatic pushing device for double-layer vacuum packaging of experimental animal feed Figure 1 ;

[0030] Figure 2 This is a three-dimensional schematic diagram of the utility model of an automatic pushing device for double-layer vacuum packaging of experimental animal feed Figure 2 ;

[0031] Figure 3 For this utility model Figure 2 A schematic diagram of the partially enlarged structure of part A of an automatic pushing device for double-layer vacuum packaging of experimental animal feed;

[0032] Figure 4 For this utility model Figure 2 A schematic diagram of the partially enlarged structure of part B of an automatic pushing device for double-layer vacuum packaging of experimental animal feed;

[0033] Figure 5 This is a schematic diagram of the main structure of an automatic pushing device for double-layer vacuum packaging of experimental animal feed in the utility model;

[0034] Figure 6 This is a schematic top view of the structure of an automatic pushing device for double-layer vacuum packaging of experimental animal feed in the utility model;

[0035] Figure 7 For this utility model Figure 6 The figure shows a schematic cross-sectional structure diagram of an automatic pushing device for double-layer vacuum packaging of experimental animal feed in the AA direction;

[0036] Figure 8 This is a schematic diagram of the three-dimensional structure of the pusher assembly in the automatic pusher device for double-layer vacuum packaging of experimental animal feed in this utility model. Figure 1;

[0037] Figure 9 This is a schematic diagram of the three-dimensional structure of the pusher assembly in the automatic pusher device for double-layer vacuum packaging of experimental animal feed in this utility model. Figure 2 ;

[0038] Figure 10 For this utility model Figure 9 A schematic diagram of the partially enlarged structure of part C on a pushing component of an automatic pushing device for double-layer vacuum packaging of experimental animal feed is shown;

[0039] Figure 11 For this utility model Figure 9 A schematic diagram of the partially enlarged structure of part D on a pushing assembly in an automatic pushing device for double-layer vacuum packaging of experimental animal feed is shown;

[0040] Figure 12 This is a schematic diagram of the three-dimensional structure of the pusher assembly in the automatic pusher device for double-layer vacuum packaging of experimental animal feed in this utility model. Figure 3 ;

[0041] Figure 13 This is a schematic diagram of the main structure of a pushing component in an automatic pushing device for double-layer vacuum packaging of experimental animal feed in the utility model;

[0042] Figure 14 This is a schematic cross-sectional view of a pusher assembly in an automatic pusher device for double-layer vacuum packaging of experimental animal feed according to the present invention;

[0043] Figure 15 This is a right-side structural schematic diagram of a pushing assembly in an automatic pushing device for double-layer vacuum packaging of experimental animal feed in the utility model;

[0044] Figure 16 This is a left-side structural schematic diagram of a pushing assembly in an automatic pushing device for double-layer vacuum packaging of experimental animal feed in the utility model;

[0045] Figure 17 This is a schematic diagram of the arrangement structure of the first compressed air blowing nozzle in an automatic pushing device for double-layer vacuum packaging of experimental animal feed in the utility model;

[0046] Figure 18 The utility model is a structural schematic diagram of a shaping mechanism in an automatic pushing device for double-layer vacuum packaging of experimental animal feed. DETAILED DESCRIPTION

[0047] The present invention will be described in detail and specifically below through specific embodiments to facilitate a better understanding of the present invention. However, the following embodiments do not limit the scope of the present invention.

[0048] In some embodiments, as Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 As shown, an automatic pushing device for double-layer vacuum packaging of experimental animal feed is provided. The automated packaging equipment mainly includes a first conveyor 100, a second conveyor 200, a lifting platform 300, a pushing assembly 400, a third conveyor 500, a grabbing assembly 600, a fourth conveying mechanism 700, a sealing mechanism 800, and a fifth conveying mechanism 900, which are arranged in sequence. The first conveyor 100, the second conveyor 200, the third conveyor 500, the fourth conveying mechanism 700, the sealing mechanism 800, and the fifth conveying mechanism 900 are arranged in two groups side by side, forming a dual production line structure, which greatly improves the packaging efficiency of the experimental animal feed.

[0049] Specifically, the first conveyor 100 comprises two sets, arranged side by side, and is used to transport the bagged experimental animal feed after a primary vacuum shaping and packaging process. The first conveyor 100 utilizes a long conveyor belt, upstream of which are located a bagging mold, a material filling mold, a shaping mold, and vacuum and sealing equipment for the initial vacuum packaging of the material. During use, the first conveyor 100 operates continuously, transporting the bagged experimental animal feed piece by piece to the second conveyor 200. Its conveying speed is determined by the bagging feed rate of the lifting platform 300, the gripping assembly 600, and the pushing assembly 400, achieving alternating continuous operation.

[0050] The second conveyors 200 comprise two sets, arranged side by side at the rear end of the first conveyor 100. They are used to receive and temporarily store the bagged experimental animal feed delivered by the first conveyor 100. The second conveyors 200 utilize short conveyor belts, which operate and pause intermittently as needed. During operation, the second conveyors 200 operate or pause in conjunction with the lifting platform 300 to temporarily forward the received bagged experimental animal feed. After the lifting platform 300 descends and resets, the second conveyors 200 restart, transferring the bagged experimental animal feed to the lifting platform 300.

[0051] In order to avoid the second conveyor 200 from colliding with the pushing assembly 400 above when transporting the bagged experimental animal feed, and to achieve the purpose of avoiding the pushing assembly 400, the upstream and downstream second conveyors 200 and the third conveyor 500 are arranged in an up and down staggered manner, and the lifting platform 300 is set between the second conveyor 200 and the third conveyor 500 to realize the transfer of the bagged experimental animal feed.

[0052] The lifting platform 300 is longitudinally arranged at the tail end of the two groups of second conveyors 200, and is used to receive the once-bagged experimental animal feed transported from the second conveyor 200 and lift it to a certain height, and cooperate with the pushing component 400 to push the once-bagged experimental animal feed lifted on the lifting platform 300 into the second packaging bag at the front end of the third conveyor 500 to realize the bagging action.

[0053] To synchronize secondary packaging on both production lines and improve production efficiency, the pusher assembly 400 is symmetrically positioned, with pusher mechanisms 450 installed on each side. Positioned transversely between the two second conveyors 200, the pusher assembly 400 simultaneously pushes the primary bagged experimental animal feed lifted from the left and right ends of the lifting platform 300 into the secondary packaging bags on the downstream third conveyor 500.

[0054] The third conveyors 500 consist of two sets, arranged side by side behind the lifting platform 300. Open second packaging bags are placed at their front ends, receiving the primary bagged experimental animal feed from the lifting platform 300 to form secondary bagged experimental animal feed. The third conveyors 500 are positioned at a higher level than the second conveyor 200 and lower than the push plate mechanism 450 above their front ends. Like the second conveyor 200, the third conveyors 500 utilize short conveyor belts, operating intermittently and pausing as needed to cycle between bagging and conveying operations.

[0055] To achieve secondary bagging, the gripping assembly 600 is used to pre-grab the second bag. The gripping assembly 600 includes two sets of bag-removing mechanisms 610, connected to a robotic arm, forming a conventional vacuum suction cup manipulator. These gripping mechanisms 610 are used to grab the second bag and transfer it to the front end of the third conveyor 500. The gripping assembly 600, in conjunction with the suction cup 620 at the front end of the third conveyor 500, opens the opening of the second bag. The opening of the second bag is positioned toward the pusher assembly 400, aligning it with the primary bagged experimental animal feed on the lifting platform 300.

[0056] The fourth conveying mechanism 700 is arranged longitudinally, and its front and rear ends are respectively used to connect the third conveyor 500 and the fifth conveying mechanism 900 to achieve continuous transfer of materials.

[0057] The left side of the front end connects to the rear ends of the two sets of third conveyors 500, receiving the secondarily bagged experimental animal feed from the third conveyors 500 and conveying it to the sealing mechanism 800 at the rear end. In conjunction with the sealing mechanism 800, the fourth conveyor mechanism 700 also operates in a staggered and paused mode, alternating between material conveyance and sealing.

[0058] The sealing mechanism 800 adopts a conventional commercially available heat sealing machine, which consists of two groups, arranged side by side on the right side of the tail end of the fourth conveying mechanism 700, and arranged opposite to the fifth conveying mechanism 900, respectively used for vacuuming and sealing the opened secondary bagged experimental animal feed.

[0059] The fifth conveying mechanism 900 serves as the output mechanism of the equipment. It consists of two groups, which are arranged side by side on the left side of the tail end of the fourth conveying mechanism 700 and correspond to the two sealing mechanisms 800 on the other side. They are used to transport the secondary bagged experimental animal feed after vacuuming and sealing to the next process.

[0060] In some of these embodiments, Figure 5 、 Figure 6 and Figure 7 As shown, the second conveyor 200, which serves as a buffer for single-bag experimental animal feed, uses a short conveyor belt and can only store one single-bag experimental animal feed at a time. To ensure stable transfer of single-bag experimental animal feed between the first conveyor 100 and the second conveyor 200, the height of the second conveyor 200 is designed to be equal to or less than the height of the first conveyor 100.

[0061] In some of these embodiments, Figure 2 、 Figure 5 and Figure 7 As shown, the lifting platform 300 serves as a lifting mechanism for the single-bagged experimental animal feed. Depending on the needs, it can adopt a scissor-type, cylinder-type, crank arm-type, or mast-type lifting platform. The installation requirements of the lifting platform 300 are as follows: when the lifting platform 300 descends to its lowest point, its left side connects with the second conveyor 200, facilitating the transportation of the single-bagged experimental animal feed onto the lifting platform 300 by activating the second conveyor 200. When the lifting platform 300 rises to its highest point, its right side connects with the third conveyor 500, facilitating the pusher assembly 400 to push the single-bagged experimental animal feed on the lifting platform 300 into the second packaging bag.

[0062] It is worth noting that the lifting height of the lifting platform 300 can be further adjusted as needed so that when the lifting platform 300 reaches its highest point, its horizontal height is higher than the horizontal height of the third conveyor 500. This facilitates the formation of a height difference between the lifting platform 300 and the third conveyor 500 on one side, facilitating the suction of the second packaging bag after the opening is opened and in place, thereby preventing the bottom of the first bagged experimental animal feed from scraping the bottom of the second packaging bag during the pushing process, thereby smoothly carrying out the secondary bagging process.

[0063] In some of these embodiments, Figure 8 、 Figure 9 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, the pusher assembly 400 mainly includes a mounting frame 410, an X-direction moving mechanism 430, and the pusher mechanism 450. As needed, a Z-direction moving mechanism 420 and a Y-direction moving mechanism 440 can also be provided to achieve three-dimensional adjustment of the pusher mechanism 450 to meet different packaging requirements.

[0064] The mounting frame 410 is a square frame structure, with both sides of its lower end fixedly mounted on the frame between the left and right first conveyors 100 and / or the second conveyors 200. The mounting frame 410 includes a bottom plate 411, a top plate 412, a left connecting square tube 413, and a right connecting square tube 414. The bottom plate 411 and the top plate 412 are arranged parallel to each other.

[0065] Specifically, the left ends of the bottom plate 411 and the top plate 412 are welded together using two left connecting square tubes 413 arranged at intervals, and the right ends are welded together using two right connecting square tubes 414 arranged at intervals, forming a square steel frame structure as a whole, providing a stable installation foundation for the installation of the X-axis moving mechanism 430 and the push plate mechanism 450.

[0066] The X-direction moving mechanism 430 can be movably installed in the mounting frame 410, and the push plate mechanism 450 is symmetrically installed on the left and right sides thereof, for driving the push plate mechanism 450 to move forward and backward, thereby accurately pushing the once-bagged experimental animal feed on the lifting platform 300 into the second packaging bag on the third conveyor 500.

[0067] Specifically, the X-axis movement mechanism 430 primarily comprises a first screw 431, a first I-shaped guide rail 432, a first fixed mounting bracket 433, a first guide wheel 434, a first nut 435, a first fixed connection block 436, a nut gear 437, and a first drive motor 438. Two first I-shaped guide rails 432 are spaced apart and fixedly mounted within the mounting frame 410. The first screw 431 is transversely mounted within the mounting frame 410 and positioned between the upper and lower first I-shaped guide rails 432. The top and bottom ends of the first fixed mounting bracket 433 are slidably mounted within grooves in the first I-shaped guide rails 432 via a plurality of first guide wheels 434.

[0068] A first nut 435 is mounted on the first screw rod 431. One end of the first nut 435 is connected to the push plate mechanisms 450 on both sides via a bearing through a first fixed mounting bracket 433. The other end is connected to a first drive motor 438 via a chain through a nut gear 437. During operation, starting the first drive motor 438 drives the first nut 435 to move forward and backward on the first screw rod 431, thereby driving the push plate mechanisms 450 to move forward and backward.

[0069] like Figure 4 、 Figure 9 and Figure 14 As shown, the push plate mechanism 450 includes two sets of symmetrically arranged connecting plates 451, a connecting bracket 452, a first connecting rod 453, a second connecting rod 454, a square push plate 455, and a buffer spring 456. The connecting plates 451 are fixedly mounted on the X-axis moving mechanism 430 or the Y-axis moving mechanism 440 with bolts and are an integral structure with the connecting bracket 452.

[0070] The front end of the connecting bracket 452 is equipped with two sets of first connecting rods 453 in an inverted F-shaped structure. The front end of the first connecting rods 453 is equipped with a retractable second connecting rod 454. The front end of the second connecting rod 454 is vertically provided with a square push plate 455, which is sleeved with a buffer spring 456. When the experimental animal feed is pushed forward once, the square push plate 455 is subjected to a reverse force and moves in the opposite direction. The buffering effect of the buffer spring 456 effectively reduces the impact force on the experimental animal feed once bagged, ensuring smooth secondary bagging.

[0071] As a preferred embodiment thereof, Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16As shown, in order to achieve the up and down adjustment of the push plate mechanism 450, the push assembly 400 further includes a Z-direction moving mechanism 420. The Z-direction moving mechanism 420 can be installed in the mounting frame 410, and the X-direction moving mechanism 430 is installed on it to drive the X-direction moving mechanism 430 to adjust up and down.

[0072] Specifically, the Z-axis movement mechanism 420 mainly includes a first vertical guide rail 421, a second vertical guide rail 422, a second vertical slide 423, a second guide wheel 424, a first vertical slide 425, an active travel wheel 426, a driven travel wheel 427, a second drive motor 428, and a limit block 429. The first vertical guide rail 421 and the second vertical guide rail 422 are respectively vertically and fixedly mounted at both ends of the mounting frame 410, and are connected to the first I-shaped guide rail 432 and the first screw rod 431 at their upper and lower ends and the middle thereof, respectively.

[0073] The sidewalls of the second vertical slide 423 are slidably mounted within the grooves of the first vertical guide rail 421 via a plurality of spaced-apart second guide wheels 424. The first vertical guide rail 421 utilizes an I-shaped channel steel structure. The lower and upper ends of the first vertical slide 425, on the other side, are slidably mounted on the first vertical guide rail 421 via active running wheels 426 and passive running wheels 427, respectively. The active running wheels 426 are connected to a second drive motor 428. Limiting blocks 429 are movably mounted on the first vertical guide rail 421 at the upper and lower ends of the first vertical slide 425.

[0074] When in use, starting the second drive motor 428 can drive the active walking wheel 426 to move up and down on the first vertical guide rail 421, thereby driving the X-direction moving mechanism 430 installed thereon to move up and down, and then driving the push plate mechanism 450 installed on the X-direction moving mechanism 430 to adjust up and down.

[0075] As another preferred embodiment, Figure 8 、 Figure 9 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, to achieve left-right adjustment of the push plate mechanism 450, the push assembly 400 further includes a Y-direction moving mechanism 440. The Y-direction moving mechanism 440 is composed of two groups, which are symmetrically installed on the left and right sides of the X-direction moving mechanism 430, respectively, for driving the X-direction moving mechanism 430 to adjust left and right.

[0076] Specifically, the Y-axis movement mechanism 440 primarily comprises two sets of symmetrically arranged first U-shaped brackets 441, second U-shaped brackets 442, third guide wheels 443, ball nuts 444, seat bearings 445, a third drive motor 446, and a third screw 447. The inner end of the first U-shaped bracket 441 is bolted to the first fixed mounting bracket 433. The top and bottom of the second U-shaped bracket 442 are slidably mounted within U-shaped grooves at the top and bottom of the first U-shaped bracket 441 via a plurality of third guide wheels 443. Under external force, the second U-shaped bracket 442 can telescope and slide along the length of the first U-shaped bracket 441. A corresponding push plate mechanism 450 is mounted on the first U-shaped bracket 441.

[0077] To achieve automatic retraction and extension of the first U-shaped bracket 441, an L-shaped mounting plate is used to mount a third screw rod 447 on the outer end of the first U-shaped bracket 441. A ball nut 444 is sleeved on the other end of the third screw rod 447. Both ends of the ball nut 444 are secured to the first U-shaped bracket 441 using seated bearings 445. A gear on one end of the ball nut 444 is connected to a third drive motor 446 via a chain. When the third drive motor 446 is activated, the rotation of the ball nut 444 drives the third screw rod 447 back and forth, thereby adjusting the longitudinal direction of the push plate mechanism 450.

[0078] In some of these embodiments, Figure 1 、 Figure 3 、 Figure 5 and Figure 7 As shown, in order to cooperate with the bag-taking mechanism 610 to open the second packaging bag, the grabbing assembly 600 further includes two groups of suction cups 620, each group of two, which are installed at intervals at the front end of the corresponding third conveyor 500, for cooperating with the bag-taking mechanism 610 to open the bag mouth of the second packaging bag.

[0079] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, the gripping assembly 600 also includes two sets of transport mechanisms 630, each connected to a robotic arm. These transport mechanisms 630 are used to re-bag the sealed experimental animal feed and transfer it to the corresponding fifth conveying mechanism 900. Similar to the bag-retrieving mechanism 610, the transport mechanisms 630 are connected to the robotic arm to form a conventional vacuum suction cup manipulator.

[0080] As a preferred embodiment thereof, Figure 5 and Figure 17As shown, to ensure smooth secondary bagging of the product, at least one first compressed air blowing nozzle 301 is installed on a side wall of the lifting platform 300. This nozzle 301 is connected to an external air compressor via a connecting tube and a solenoid valve. When the lifting platform 300 rises to a preset position, the outlet of the first compressed air blowing nozzle 301 faces the opening of the second bag at the front end of the third conveyor 500, blowing air into the second bag and adjusting the opening to ensure that the inner and outer bags are aligned, facilitating subsequent vacuuming and sealing. This also enhances the aesthetics of the finished package and ensures packaging consistency.

[0081] As a preferred embodiment thereof, Figure 5 As shown, at least one second compressed air blowing nozzle 302 is arranged directly above the connection position of the second conveyor belt 200 and the lifting platform 300. The second compressed air blowing nozzle 302 is externally connected to an air compressor, and the air outlet of the second compressed air blowing nozzle is arranged downward. Its purpose is to blow the flat bag opening of the once bagged feed downward when the once bagged feed passes through the connection position of the second conveyor belt 200 and the lifting platform 300, so as to facilitate the subsequent second bagging.

[0082] As a preferred embodiment thereof, Figure 18 As shown, the first batch of experimental animal feed is shaped and trimmed to achieve a regular, uniform rectangular appearance. This addresses the limitations of the automated bagging, vacuum sealing, and sealing processes due to varying sizes and shapes. A first shaping platen 001 and a second shaping platen 002 are installed on the corresponding downstream conveyor or the upstream primary packaging conveyor 000, respectively. These plates shape and trim the first batch of experimental animal feed.

[0083] The first shaping platen 001 is tilted and positioned upstream. Two first shaping platens 001 are symmetrically mounted on either side of the conveyor belt, each retractably mounted to a frame on either side of the conveyor using a first telescopic cylinder 002. The second shaping platen 002 is an isosceles structure, with two plates symmetrically mounted on either side of the conveyor belt, each retractably mounted to a frame on either side of the conveyor using a second telescopic cylinder 003.

[0084] During use, the first telescopic cylinder 002 is activated to adjust the distance between the two first shaping platens 001, enabling flexible adjustment of the shaping entrance between the first shaping platens 001. Simultaneously, the second telescopic cylinder 003 is activated to squeeze and shape the first bagged experimental animal feed, which has been transferred between the two second shaping platens 002. This shaping creates a smooth package for the bagged experimental animal feed, reducing the risk of damage and enhancing protection against breakage.

[0085] In addition, based on Figures 1 to 16 The packaging equipment shown provides a double-layer vacuum shaping automated packaging method for experimental animal feed, which specifically includes the following steps:

[0086] (1) Single bagging: The first packaging bag is subjected to mold bagging, material mold filling, mold shaping, vacuuming, and sealing. After completing the single-layer vacuum shaping, a single-bag experimental animal feed is obtained;

[0087] (2) Secondary bagging preparation: The bag taking mechanism 610 cooperates with the robotic arm to suck and transfer the second packaging bag to the third conveyor 500, and cooperates with the corresponding suction cup 620 to open the opening at the front end of the second packaging bag into an open shape;

[0088] (3) Secondary bagging and lifting: The primary bagged experimental animal feed is sequentially conveyed to the lifting platform 300 via the first conveyor 100 and the second conveyor 200, and the lifting platform 300 is started to lift the primary bagged experimental animal feed to a preset height;

[0089] (4) Secondary bagging: Start the push plate mechanism 450 on the pushing assembly 400 to move forward, push the primary bagged experimental animal feed on the lifting platform 300 into the secondary packaging bag, and then release the negative pressure on the bag taking mechanism 610 and the suction cup 620;

[0090] (5) Secondary bagging and sealing: Start the third conveying mechanism 500 to convey the opened secondary bagged experimental animal feed to the fourth conveying mechanism 700, and start the fourth conveying mechanism 700 to convey it to the sealing mechanism 800 at the tail end for vacuuming and sealing;

[0091] (6) Secondary bagging output: The transport mechanism 630 cooperates with the robotic arm to transfer the bagged secondary bagged experimental animal feed to the fifth conveying mechanism 900, and the fifth conveying mechanism 900 is activated to transport it to the next process;

[0092] (7) Repeat the above steps (1) to (6), and the left and right packaging production lines are carried out simultaneously to realize the double-layer vacuum shaping automatic packaging of experimental animal feed.

[0093] In summary, the packaging process for this automated double-layer vacuum-molding packaging method for experimental animal feed is as follows: the first layer undergoes mold bagging, mold filling, mold shaping, vacuuming, and sealing. After the single-layer vacuum shaping is completed, the second layer undergoes bagging, vacuuming, and sealing to complete the double-layer vacuum-molding packaging. This shaping method achieves a regular, uniform rectangular shape for the product, addressing the limitations of the automated bagging, vacuuming, and sealing processes due to varying sizes and irregular shapes.

[0094] The innovative double-layer vacuum-molded packaging structure of this utility model realizes double protection. As long as one layer of packaging is intact, the contamination of the product contents by microorganisms can be avoided. In addition, the shaping also creates a flat packaging shape, reducing the risk of bumping and breaking the package, and improving the protection effect against package breakage.

[0095] While the specific embodiments of the present invention have been described in detail above, these are merely examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, any equivalent changes and modifications made without departing from the spirit and scope of the present invention are intended to be encompassed within the scope of the present invention.

Claims

1. An automatic pushing device for double-layer vacuum packaging of experimental animal feed, characterized in that: include: A first conveyor (100), wherein the first conveyor (100) comprises two groups, arranged side by side on the left and right, and is used to convey the once-bagged experimental animal feed that has been once vacuum-formed and packaged; A second conveyor (200), wherein the second conveyor (200) comprises two groups, which are arranged side by side on the left and right sides at the tail end position corresponding to the first conveyor (100), and are used to receive and temporarily store the once-bagged experimental animal feed conveyed by the first conveyor (100); A lifting platform (300), the lifting platform (300) is longitudinally arranged at the tail end of the two groups of the second conveyors (200), and is used to receive the once-bagged experimental animal feed conveyed from the second conveyors (200) and lift it to a certain height; A pushing assembly (400) is disposed transversely between the two second conveyors (200), and is provided with a push plate mechanism (450) on its left and right sides, respectively, for pushing the once-bagged experimental animal feed lifted on the lifting platform (300) into the second packaging bag on the downstream third conveyor (500); a third conveyor (500), wherein the third conveyor (500) is divided into two groups and arranged side by side on the rear side of the lifting platform (300), and an open second packaging bag is placed on the front end of the third conveyor (500), and is used to receive the primary bagged experimental animal feed on the lifting platform (300) to form a secondary bagged experimental animal feed; A grabbing assembly (600) includes two sets of bag-picking mechanisms (610), and the bag-picking mechanisms (610) are connected to the robotic arm and are used to grab the second packaging bag and transfer it to the front end of the third conveyor (500), and the bag mouth of the second packaging bag is arranged in an open shape toward the pushing assembly (400).

2. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 1, characterized in that: At least one first compressed air blowing nozzle (301) is provided on a side wall of the lifting platform (300), the first compressed air blowing nozzle (301) is externally connected to an air compressor, and the air outlet of the first compressed air blowing nozzle (301) is directly opposite to the bag opening of the second packaging bag at the front end of the third conveyor (500) when the lifting platform (300) rises to a preset position.

3. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 1, characterized in that: The pusher assembly (400) includes a mounting frame (410), an X-direction moving mechanism (430) and the push plate mechanism (450), wherein: The mounting frame (410) is a square frame structure, and both sides of its lower end are fixedly mounted on the rack between the left and right first conveyors (100) and / or the second conveyors (200); The X-direction moving mechanism (430) is movably mounted in the mounting frame (410), and the push plate mechanisms (450) are symmetrically mounted on the left and right sides thereof, respectively, for driving the push plate mechanisms (450) to move forward and backward; The front end of the push plate mechanism (450) is provided with two groups of first connecting rods (453) with an inverted F-shaped structure, the front end of the first connecting rod (453) is provided with a telescopic second connecting rod (454), and the front end of the second connecting rod (454) is vertically provided with a square push plate (455) and a buffer spring (456) is sleeved on it.

4. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 3, characterized in that: The pusher assembly (400) further includes a Z-direction moving mechanism (420) and a Y-direction moving mechanism (440), wherein: The Z-direction moving mechanism (420) is installed in the installation frame (410) in a lifting manner, and the X-direction moving mechanism (430) is installed thereon for driving the X-direction moving mechanism (430) to adjust up and down; The Y-direction moving mechanism (440) comprises two groups, which are respectively installed on the left and right sides of the X-direction moving mechanism (430) in a left-right symmetrical manner, and are used to drive the X-direction moving mechanism (430) to adjust left and right.

5. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 1, characterized in that: The level of the third conveyor (500) is higher than the level of the second conveyor (200), and lower than the level of the push plate mechanism (450) above its front end.

6. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 1, characterized in that: The grabbing assembly (600) further includes two groups of suction cups (620), each group consisting of two, which are installed at intervals at the front end positions corresponding to the third conveyor (500) and are used to cooperate with the bag-taking mechanism (610) to open the bag opening of the second packaging bag.

7. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 1, characterized in that: It also includes a fourth conveying mechanism (700), which is arranged longitudinally, and the left side of its front end is connected to the rear ends of the two groups of third conveyors (500), and is used to receive the secondary bagged experimental animal feed on the third conveyors (500) and convey it to the sealing mechanism (800) at the tail end.

8. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 7, characterized in that: It also includes a sealing mechanism (800), which is divided into two groups and arranged side by side on the right side of the tail end of the fourth conveying mechanism (700), and is used for vacuuming and sealing the opened secondary bagged experimental animal feed respectively.

9. The automatic pushing device for double-layer vacuum packaging of experimental animal feed according to claim 8, characterized in that: It also includes a fifth conveying mechanism (900), which is divided into two groups and is located on the left side of the tail end of the fourth conveying mechanism (700) arranged side by side, and is arranged corresponding to the two sealing mechanisms (800) on the other side, for conveying the secondary bagged experimental animal feed after vacuuming and sealing to the next process.

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