Automatic boxing and packaging equipment for packaging food

Abstract

The invention discloses automatic boxing and packaging equipment for packaging food, comprising a box opening and bottom sealing device for sealing the bottom of a packaging box; a receiving conveyor belt; the feeding conveying belt is used for inputting materials to the material receiving conveying belt, and a positioning structure is arranged above the material receiving conveying belt; the packaging box conveying belt receives the packaging box output by the box opening and bottom sealing device; the boxing mechanism is used for transferring the materials into the packaging boxes on the packaging box conveying belt; and the box sealing and plate folding mechanism is used for carrying out plate folding and box sealing on the top of the packaging box. Through cooperative work of the feeding conveying belt and the material receiving conveying belt, continuous conveying and accurate positioning of materials are achieved. The positioning structure above the material receiving conveying belt can ensure that packaged food is neatly arranged when entering the conveying belt, boxing failure or damage caused by material position deviation is avoided, and boxing stability and reliability are remarkably improved. And manual intervention is reduced, the labor intensity is reduced, and the packaging box processing efficiency and stability are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging, and in particular, to an automatic packing and packaging device for packaged food. Background Art

[0002] In the field of food processing and packaging, especially in the production process of small-packaged foods such as pudding, whole-box packaging is one of the key links to achieve efficient production and quality assurance. Traditional packing of small-packaged foods usually relies on manual operation. This method is not only inefficient, prone to problems such as inaccurate packing and product damage, but may also cause hygienic problems in the production environment, affecting product quality and safety.

[0003] In recent years, with the development of automation technology, various automatic packing devices have emerged on the market. However, due to the usually small size of small-packaged foods, for example, when packing pudding, more than a dozen puddings are needed in one layer. The existing devices lack stability in the processes of material grasping, positioning, and packing, and it is easy to cause the pudding to fall or be damaged during the packing process. In addition, for the bottom sealing and case sealing links of the packing box, traditional devices mostly use independent devices or manual operations, and there is still room for improvement in terms of automation degree, efficiency, and stability. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides an automatic packing and packaging device for packaged food.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An automatic packing and packaging device for packaged food, comprising: an opening and bottom-sealing device for sealing the bottom of the packing box; a receiving conveyor belt; a feeding conveyor belt for feeding materials to the receiving conveyor belt, and a positioning structure is provided above the receiving conveyor belt to position the materials entering the receiving conveyor belt; a packing box conveyor belt for receiving the packing boxes output by the opening and bottom-sealing device, and the packing box conveyor belt extends to the side of the receiving conveyor belt opposite to the feeding conveyor belt; a packing mechanism for transferring the materials on the receiving conveyor belt into the packing boxes on the packing box conveyor belt; a case-sealing folding plate mechanism for folding and sealing the top of the packing boxes filled with materials output by the packing box conveyor belt.

[0007] Further, the packing mechanism includes: a packing frame erected above the receiving conveyor belt and the packing box conveyor belt; a sliding frame slidably mounted on the top of the packing frame; a first lifting drive mechanism installed on the sliding frame, with a telescopic lifting end at the bottom, and the lifting end is connected to a material transfer frame, and the material transfer frame can grab the materials on the receiving conveyor belt and then transfer them into the packing boxes on the packing box conveyor belt.

[0008] Further, the positioning structure includes a material baffle and side alignment plates; the material baffle is located above the output side of the material receiving conveyor belt and is used to block the material for the material to abut and be positioned; there are two side alignment plates located on both sides above the material receiving conveyor belt; the two side alignment plates and the material baffle form a material receiving groove with an opening facing the material feeding conveyor belt.

[0009] Further, an installation seat is provided below the material receiving conveyor belt; a second lifting drive mechanism is installed on the installation seat, the telescopic movable end of the second lifting drive mechanism is connected to a lifting frame, a first horizontal telescopic drive mechanism is installed on the lifting frame, and the telescopic end of the first horizontal telescopic drive mechanism is connected to the material baffle to drive the material baffle to move horizontally along the conveying direction of the material receiving conveyor belt; an inclined chute is installed on the installation seat, the inclined chute is located at the output side of the material receiving conveyor belt and is used to receive the material output by the material receiving conveyor belt; a second horizontal telescopic drive mechanism is installed on the installation seat, there are two second horizontal telescopic drive mechanisms symmetrically arranged on both sides of the material receiving conveyor belt, and the telescopic ends of the second horizontal telescopic drive mechanisms are connected to the side alignment plates.

[0010] Further, the case sealing folding plate mechanism includes: a mounting frame; conveyor belts, installed at the upper end of the mounting frame and spaced left and right, for driving the packaging box entering the middle of the two conveyor belts to move forward; a case pressing frame, connected to the mounting frame and located above the conveyor belts, and a front folding plate structure, a rear folding plate structure, and a side folding plate structure are provided on the case pressing frame; a converging structure that moves forward and downward is provided at the rear end of the front folding plate structure to fold the front cover plate of the packaging box moving forward; the rear folding plate structure is movably installed on the case pressing frame and is used to fold the rear cover plate of the packaging box towards the front folding plate structure so as to be pressed by the front folding plate structure; the rear end of the side folding plate structure is more forward than the rear end of the front folding plate structure, and two side folding plate structures are symmetrically arranged on the left and right to cause the side cover plates of the packaging box moving forward to be folded inward and press the front cover plate and the rear cover plate; a rear folding drive mechanism is installed on the case pressing frame and is used to drive the rear folding plate structure to move.

[0011] Further, the rear folding plate structure has an avoidance state and a folding plate state, the rear folding plate structure is hinged to the case pressing frame to realize the switching between the avoidance state and the folding plate state, the rear folding plate structure in the avoidance state is higher than that in the folding plate state to avoid the front and rear movement paths of the packaging box, and the rear folding plate structure in the folding plate state can fold the rear cover plate of the packaging box towards the front folding plate structure.

[0012] Further, the case pressing frame is installed on the mounting frame in a lifting and movable manner, and a lifting drive mechanism is installed on the mounting frame to drive the case pressing frame to lift.

[0013] Furthermore, the box opening and bottom sealing device includes: a supporting frame, including two left and right pallets spaced apart, for supporting the packaging box; two side conveyor belts spaced apart on the left and right and located on the outside of the two pallets, for driving the packaging box to be conveyed forward on the pallets; a gluing mechanism, for gluing and sealing the bottom of the packaging box passing through the pallets; a conveying transition belt, for receiving the packaging box output by the side conveyor belt; and a box expanding mechanism, for expanding the cover plate on the top of the packaging box on the conveying transition belt.

[0014] Furthermore, the gluing mechanism includes: a first pressing frame, which is hinged between the two supporting plates, and a first pressing roller is rotatably installed on the top of the first pressing frame, and the first pressing frame has a waiting state and a gluing state; in the waiting state, the upper end of the first pressing roller is higher than the upper end of the supporting plate; in the gluing state, the first pressing roller is pressed downward by the packaging box on the supporting plate, and presses the tape to the bottom of the packaging box; a second pressing frame, which is hinged between the two supporting plates and is located in front of the first pressing frame, and a second pressing roller is rotatably installed on the top of the second pressing frame, and the second pressing frame has an upper state and a folded state, and in the upper state, the upper end of the second pressing roller is higher than the upper end of the packaging box on the supporting plate. end, when in the folded state, the height of the second pressing roller is lower than that in the upper state and can allow the packaging box to pass over; the second pressing frame is connected to the first pressing frame through a linkage, and when the second pressing frame is in the upper state, the first pressing frame is in a standby pressing state; when the second pressing frame is in the folded state, the first pressing frame is in a glue pressing state; and in the process of moving from the folded state to the upper state, the second pressing frame has at least a tail pressing stroke, and in the tail pressing stroke, the rotation activity of the second pressing frame will cause the second pressing roller to move forward and become higher; the first reset structure is used to push the first pressing frame in the glue pressing state to return to the standby pressing state.

[0015] Furthermore, the adhesive laminating mechanism further comprises a tape cutting mechanism, which is located between the first pressing frame, the second pressing frame and between the two supporting plates and is used to cut the adhesive tape passing over;

[0016] The strip cutting mechanism comprises a strip cutting frame, the strip cutting frame is provided with a toggle handle, and the strip cutting frame is provided with a cutting knife; the strip cutting frame has a downward pressing state and an initial state, and the strip cutting frame is movably mounted on the support plate to realize the switching between the downward pressing state and the initial state; in the initial state, the blade of the cutting knife is higher than the top of the support plate; in the downward pressing state, the blade of the cutting knife is lower than the top of the support plate; the toggle handle is used to contact with the packaging box moving forward and drive the strip cutting frame from the initial state to the downward pressing state under the push of the packaging box until it switches to the downward pressing state; the blade of the cutting knife does not protrude from the edge of the toggle handle and the cutting knife and the toggle handle are staggered in the left and right directions; a second reset structure is connected to the strip cutting frame, and the second reset structure is used to push the strip cutting frame in the downward pressing state to move toward the initial state; the middle part of the strip cutting frame is hinged to the support plate, and the second reset structure is a tension spring, one end of the second reset structure is connected to the bottom of the strip cutting frame, and the other end is connected to the support plate.

[0017] The present invention has the following beneficial effects:

[0018] Through the coordinated work of the feeding conveyor belt and the receiving conveyor belt, the continuous conveying and precise positioning of materials (small packaged foods) are realized. The positioning structure above the receiving conveyor belt can ensure that the small packaged foods are neatly arranged when entering the conveyor belt, avoiding packing failure or damage caused by material position deviation, and significantly improving the stability and reliability of packing. The packing mechanism enables the small packaged foods to be accurately transferred from the receiving conveyor belt to the packaging box on the packaging box conveyor belt. This design not only improves the packing efficiency, but also ensures the smooth transfer of small packaged foods during the packing process through optimized mechanical structure and control algorithm, avoiding product damage caused by dumping or collision, and is particularly suitable for the packing needs of small packaged foods with small volume and large quantity. The integrated design of the box opening and bottom sealing device and the box sealing and folding plate mechanism realizes the full process automation operation of the box from bottom sealing to top folding plate sealing. This integrated design not only reduces manual intervention and labor intensity, but also significantly improves the efficiency and stability of box handling, ensuring the continuity and efficiency of the packaging process. The use of automated equipment to pack and seal small-packaged foods reduces the chances of human contact with food, effectively reduces hygiene risks in the production environment, and improves product quality and safety.

[0019] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 is the overall structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 is the structural schematic diagram of removing part of the outer shell of an embodiment of the present invention;

[0023] Figure 3 is the structural schematic diagram of the box expanding mechanism;

[0024] Figure 4 is the relevant structural schematic diagram at the box packing mechanism;

[0025] Figure 5 is Figure 4 the enlarged view at position A of ;

[0026] Figure 6 is Figure 4 the structural schematic diagram from another perspective of ;

[0027] Figure 7 is Figure 6 the enlarged view at position B of ;

[0028] Figure 8 is the structural schematic diagram of the box sealing folding plate mechanism;

[0029] Figure 9 is Figure 8 the cross-sectional view of ;

[0030] Figure 10 is the structural schematic diagram of the box pressing frame;

[0031] Figure 11 is Figure 10 the enlarged view at position C of ;

[0032] Figure 12 is the structural schematic diagram of the box opening and bottom sealing device;

[0033] Figure 13 is Figure 12 the perspective view of ;

[0034] Figure 14 is the structural schematic diagram of a state during the working process of the box opening and bottom sealing device;

[0035] Figure 15 is the internal structural schematic diagram of the box opening and bottom sealing device;

[0036] Legend:

[0037] Packing box 101, front cover plate 102, rear cover plate 103, side cover plate 104;

[0038] Unpacking bottom sealing device 100, supporting bracket 110, pallet 111, first positioning post 112, second positioning post 113, guiding plate 114, first mounting plate 115, side conveyor belt 120; first pressing frame 130, first pressing roller 131; second pressing frame 140, second pressing roller 141, first reset structure 142; tape cutting mechanism 150, tape cutting frame 151, toggle handle 1511, cutting knife 152, second reset structure 153, protective cover 154, extension strip 1541; connecting rod 160, positioning groove 161; tape roller 170, transfer conveyor belt 180, box expanding mechanism 190, lifting cylinder 191, second mounting plate 192, box expanding plate 193;

[0039] Receiving conveyor belt 200, mounting seat 210, inclined chute 220;

[0040] Inlet conveyor belt 300;

[0041] Packaging box conveyor belt 400, vertical plate 410, perforation 411, notch 412, through hole 413, guiding strip plate 420, positioning post 430; material transfer mechanism 440, mounting frame 441, sliding toggle plate 442, baffle 443; transfer conveyor line 450;

[0042] Packing mechanism 500, packing frame 510, sliding frame 520, first lifting drive mechanism 530, material transfer frame 531, negative pressure suction nozzle 532;

[0043] Case sealing folding plate mechanism 600, mounting frame 610, vertical frame 611, chute 6111, conveyor belt 620, case pressing frame 630; front folding plate structure 631, folding-in structure 6311, horizontal section 6312; rear folding plate structure 632, side folding plate structure 633, connecting column 6331, stabilizing pressing plate 634, vertical plate 6341, strip hole 6342; mounting block 635, vertical hole 6351, fastening hole 6352; lifting frame 636, nut block 6361, rear folding drive mechanism 640;

[0044] Material blocking plate 700, side alignment plate 710, second horizontal telescopic drive mechanism 711; second lifting drive mechanism 720, lifting frame 721, first horizontal telescopic drive mechanism 722;

[0045] Material discharging mechanism 800. Specific embodiments

[0046] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0049] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] Please refer to Figure 1 and Figure 2 , an automatic boxing and packaging device for packaged foods in a preferred embodiment provided by the present invention includes an opening and bottom sealing device 100, a receiving conveyor belt 200, a feeding conveyor belt 300, a packing box conveyor belt 400, a boxing mechanism 500, and a box sealing and folding mechanism 600.

[0051] The opening and bottom sealing device 100 is used to seal the bottom of the packing box 101, that is, to seal the bottom of the packing box 101 with adhesive tape.

[0052] The feeding conveyor belt 300 is used to input materials to the receiving conveyor belt 200, and a positioning structure is provided above the receiving conveyor belt 200 to position the materials entering the receiving conveyor belt 200.

[0053] The packing box conveyor belt 400 receives the packing box 101 output by the opening and bottom sealing device 100, and the packing box conveyor belt 400 extends to the side of the receiving conveyor belt 200 opposite to the feeding conveyor belt 300.

[0054] The boxing mechanism 500 is used to transfer the materials on the receiving conveyor belt 200 into the packing box 101 on the packing box conveyor belt 400.

[0055] The case-sealing folding plate mechanism 600 is used to fold and seal the top of the packing box 101 containing materials output by the packing box conveyor belt 400. In order to achieve automatic blanking, a blanking mechanism 800 is further provided on the output side of the case-sealing folding plate mechanism 600 to realize automatic blanking and stacking through a manipulator.

[0056] In an automatic packing and boxing equipment for packaged food provided by a preferred embodiment of the present invention, through the coordinated operation of the feeding conveyor belt 300 and the receiving conveyor belt 200, continuous conveying and precise positioning of materials are achieved. The positioning structure above the receiving conveyor belt 200 can ensure that small-packaged foods are neatly arranged when entering the conveyor belt, avoiding packing failures or damages caused by material position deviations, and significantly improving the stability and reliability of packing. The packing mechanism 500 enables small-packaged foods to be accurately transferred from the receiving conveyor belt 200 into the packing box on the packing box conveyor belt 400. This design not only improves the packing efficiency but also ensures the smooth transfer of small-packaged foods during the packing process through an optimized mechanical structure and control algorithm, avoiding product damages caused by dumping or collision, and is particularly suitable for the packing requirements of small-packaged foods with small volume and large quantity. The integrated design of the case-opening and bottom-sealing device 100 and the case-sealing folding plate mechanism 600 realizes the full-process automatic operation of the packing box from bottom sealing to top folding and sealing. This integrated design not only reduces manual intervention and labor intensity but also significantly improves the efficiency and stability of packing box handling, ensuring the continuity and high efficiency of the packing process. By completing the packing and sealing operations of small-packaged foods through automated equipment, the opportunity for manual contact with foods is reduced, effectively reducing the hygiene risk in the production environment and improving the quality and safety of products.

[0057] Refer to Figures 4 to 7 In some embodiments of the present invention, the packing mechanism 500 includes a packing frame 510, a sliding frame 520, and a first lifting drive mechanism 530.

[0058] The packing frame 510 is erected above the receiving conveyor belt 200 and the packing box conveyor belt 400; a part of the packing box conveyor belt 400 extends below the packing frame 510.

[0059] The sliding frame 520 is slidably installed on the top of the packing frame 510; the sliding of the sliding frame 520 can be realized through a slider and a slide rail. The top of the packing frame 510 is provided with a slide rail, and the bottom of the sliding frame 520 is provided with a slider adapted to the slide rail. The sliding of the sliding frame 520 can be driven by means such as a telescopic cylinder, a driving motor driving a belt, a telescopic motor, or a motor screw-nut pair.

[0060] The first lifting drive mechanism 530 is installed on the sliding frame 520. The bottom of the first lifting drive mechanism 530 is provided with a telescopic movable lifting end. The lifting end is connected to a material transfer rack 531. The material transfer rack 531 can grab the materials on the receiving conveyor belt 200 and then transfer them into the packaging box 101 on the packaging box conveyor belt 400. Part of the packaging box conveyor belt 400 extends below the moving path of the sliding frame 520. The packaging box conveyor belt 400 is used to convey the packaging box to below the moving path of the sliding frame 520, so that the material transfer rack 531 can grab the materials on the receiving conveyor belt 200 and then transfer them into the packaging box 101 on the packaging box conveyor belt 400.

[0061] Specifically, the first lifting drive mechanism 530 can be a telescopic cylinder, and the lifting end is the telescopic push rod of the cylinder. At least part of the receiving conveyor belt 200 is located below the moving path of the sliding frame 520. As Figure 7 shown, a plurality of negative pressure suction nozzles 532 are arranged on the material transfer rack 531, and the materials are taken by negative pressure suction, especially suitable for taking boxed or cup-packed foods. Through the sliding function of the sliding frame 520 and the lifting end of the first lifting drive mechanism 530, the material transfer rack 531 can accurately grab the materials below and transfer them from the receiving conveyor belt 200 into the packaging box 101 on the packaging box conveyor belt 400.

[0062] Referring to Figure 7 , in a further embodiment of the present invention, the positioning structure includes a baffle plate 700 and side alignment plates 710. The baffle plate 700 is located above the output side of the receiving conveyor belt 200 and is used to block the materials for the materials to abut and be positioned; specifically, the output side is the front side of the receiving conveyor belt 200, and the baffle plate 700 is located above the front side of the receiving conveyor belt 200. There are two side alignment plates 710 and they are located on both sides above the receiving conveyor belt 200; the two side alignment plates 710 and the baffle plate 700 form a receiving groove with an opening facing the feeding conveyor belt 300, that is, blocked on three sides and open on one side for the materials on the feeding conveyor belt 300 to enter, so as to realize the positioning and limiting of the materials.

[0063] In a further embodiment of the present invention, a mounting base 210 is provided below the receiving conveyor belt 200; both the packing rack 510 and the receiving conveyor belt 200 are mounted on the mounting base 210. A second lifting drive mechanism 720 is mounted on the mounting base 210. The telescopic movable end of the second lifting drive mechanism 720 is connected to a lifting frame 721. A first horizontal telescopic drive mechanism 722 is mounted on the lifting frame 721. The telescopic end of the first horizontal telescopic drive mechanism 722 is connected to the baffle plate 700 to drive the baffle plate 700 to move horizontally along the conveying direction of the receiving conveyor belt 200. An inclined chute 220 is mounted on the mounting base 210. The inclined chute 220 is located on the output side of the receiving conveyor belt 200 and is used to receive the materials output by the receiving conveyor belt 200. By mounting the second lifting drive mechanism 720 and the first horizontal telescopic drive mechanism 722 on the mounting base 210, the lifting and horizontal movement functions of the baffle plate 700 are realized. The baffle plate 700 can flexibly adjust its position according to the size and shape of the materials. And when the material transfer rack 531 moves down to grab the materials, the baffle plate 700 can contract to avoid the material transfer rack 531, reducing structural interference and avoiding structural collision damage. In addition, when the remaining materials on the receiving conveyor belt 200 need to be discharged, the second lifting drive mechanism 720 can be used to drive the baffle plate 700 to expand and contract, so as to release the materials and enable the materials to be discharged from the output side of the receiving conveyor belt 200. It can be understood that in order to avoid the materials, the second lifting drive mechanism 720 will be arranged on the left and right sides of the receiving conveyor belt 200. The inclined chute 220 is used to receive and guide the output of the materials, so that the remaining materials output by the receiving conveyor belt 200 flow to a relatively open position. A receiving frame can be arranged below the inclined chute 220 to receive the remaining materials. A second horizontal telescopic drive mechanism 711 is mounted on the mounting base 210. There are two second horizontal telescopic drive mechanisms 711 and they are symmetrically arranged on the left and right sides of the receiving conveyor belt 200. The telescopic ends of the second horizontal telescopic drive mechanisms 711 are connected to the side alignment plates 710. The second horizontal telescopic drive mechanisms 711 symmetrically mounted on the left and right sides of the receiving conveyor belt 200 and the connected side alignment plates 710 can perform a lateral alignment operation on the materials. When the material transfer rack 531 needs to descend to grab the materials, the side alignment plates 710 will contract to avoid affecting the smooth grabbing of the materials. It ensures the accurate position of the materials during grabbing, avoids packing failure or damage caused by the position deviation of the materials, and further improves the accuracy and reliability of packing. And the horizontal movement function of the side alignment plates 710 enables them to adapt to materials of different sizes, enhancing the versatility and flexibility of the equipment. The second lifting drive mechanism 720, the first horizontal telescopic drive mechanism 722 and the second horizontal telescopic drive mechanism 711 can all be telescopic cylinders.

[0064] Refer to Figure 6 and Figure 7, in some embodiments of the present invention, vertical plates 410 are provided on both upper sides of the packing box conveyor belt 400, that is, the vertical plates 410 are arranged on both sides in the width direction of the packing box conveyor belt 400. A guiding strip plate 420 that can be adjusted to move along the width direction of the packing box conveyor belt 400 is installed on the vertical plate 410 to adjust the distance between the two guiding strip plates 420 to adapt to the width of the packing box 101. The vertical plates 410 and the adjustable guiding strip plates 420 on both upper sides of the packing box conveyor belt 400 enable the guiding strip plates 420 to flexibly adjust the distance according to the width of the packing box 101. In a further embodiment of the present invention, through holes 411 are provided on the vertical plate 410, notches 412 are provided at the upper ends of the through holes 411, through holes 413 are provided on both sides of the notches 412, and the guiding strip plate 420 is provided with positioning posts 430 that are movably inserted into the through holes 411. Fasteners are installed in the through holes 413 to clamp the positioning posts 430. By providing the through holes 411, notches 412 and through holes 413 on the vertical plate 410 and using fasteners to clamp the positioning posts 430 of the guiding strip plate 420, the rapid installation and fixation of the guiding strip plate 420 are achieved. It is convenient for users to quickly adjust the distance according to actual needs, improving the adaptability and operation convenience of the packing mechanism. The use of fasteners ensures the stability of the guiding strip plate 420 after adjustment, enhancing the reliability of the equipment.

[0065] In some embodiments of the present invention, a third horizontal telescopic driving mechanism is installed on the upper side of the end of the packing box conveyor belt 400. The third horizontal telescopic driving mechanism is connected with a telescopic and movable baffle plate. The baffle plate is used to block the packing box 101 on the packing box conveyor belt 400 from continuing to move along the conveying direction, so that the packing box 101 on the packing box conveyor belt 400 is on the moving path of the material transfer rack 531. There is a certain gap between the guiding strip plate 420 and the packing box conveyor belt 400, and the baffle plate shuttles and moves within this gap. The third horizontal telescopic driving mechanism and the connected baffle plate can effectively block the packing box 101 from continuing to move along the conveying direction, ensuring that the packing box 101 accurately stops on the moving path of the material transfer rack 531 during packing. The accuracy of packing box positioning is improved, and it can also prevent the packing box from failing to be packed or being damaged due to position deviation during the packing process, further enhancing the stability and reliability of packing. The third horizontal telescopic driving mechanism can be a telescopic cylinder.

[0066] Referring to Figure 4 and Figure 5 , in some embodiments of the present invention, a material transfer mechanism 440 is further included, which is arranged at the end of the packing box conveyor belt 400 and is used to transfer the packing box 101 at the end of the packing box conveyor belt 400 to the transition conveyor line 450. The transition conveyor line 450 is then used to convey the packing box to the sealing and folding mechanism 600. The end of the packing box conveyor belt 400 is the end in the conveying direction of the packing box conveyor belt 400, that is, as Figure 6The left end position. The transfer mechanism 440 is arranged at the end of the packing box conveyor belt 400 and is used to transfer the packed packing box 101 to the transition conveyor line 450. It realizes the seamless connection between the packing process and the subsequent conveying link, further optimizes the automation degree of the entire production process, and improves the production efficiency. The addition of the transfer mechanism 440 enables the packed packing box to quickly enter the subsequent process, reduces manual intervention, and reduces the labor intensity. Moreover, it can change the conveying direction of the subsequent packing boxes, making the overall layout of the production line more reasonable. The overall layout of the entire production line is arranged along the back-to-front direction, reducing the floor area in the left-right direction.

[0067] Referring to Figure 5 , in a further embodiment of the present invention, the transfer mechanism 440 includes a mounting frame 441, a sliding dial 442, a baffle 443, and a sliding driving mechanism. The mounting frame 441 is arranged at the end of the packing box conveyor belt 400. The sliding dial 442 is slidably mounted on the mounting frame 441, and the sliding direction is perpendicular to the conveying direction of the packing box conveyor belt 400. Sliders can be arranged on the sliding dial 442, and slide rails can be arranged on the mounting frame 441. The sliding guide is realized through the cooperation of the sliders and the slide rails. The sliding of the sliding dial 442 can push the packing box 101 at the end of the packing box conveyor belt 400 to the transition conveyor line 450; the baffle 443 is arranged at the end of the packing box conveyor belt 400 to block the packing box 101 from continuing to move along the conveying direction of the packing box conveyor belt 400, and the sliding driving mechanism is used to drive the sliding of the sliding dial 442. The sliding dial 442 can push the packing box 101 at the end of the packing box conveyor belt 400 to the transition conveyor line 450, while the baffle 443 prevents the packing box 101 from continuing to move along the conveying direction. It improves the efficiency and stability of the packing box transfer, and further enhances the automation level and operation convenience of the packing mechanism. The sliding driving mechanism can be a telescopic cylinder or a telescopic motor or a combination of a motor and a screw-nut pair.

[0068] Referring to Figure 8 and Figure 9 , the case sealing folding plate mechanism 600 includes a mounting frame 610, a conveyor belt 620, a case pressing frame 630, and a rear folding driving mechanism 640.

[0069] The conveyor belt 620 is installed at the upper end of the mounting frame 610 and is arranged at intervals left and right, and is used to drive the packing box 101 entering the middle of the two conveyor belts 620 to move forward. Specifically, a mounting frame is fixed at the upper end of the mounting frame 610, and the conveyor belt 620 is installed on the mounting frame. The conveyor belt 620 arranged at intervals left and right can clamp the packing box 101 to move forward through friction. Since the conveyor belt 620 has a certain elastic ability, the packing box 101 will not be damaged. In order to improve the friction, strip-shaped protrusions are also provided on the surface of the conveyor belt 620.

[0070] The box pressing frame 630 is connected to the mounting frame 610 and is located above the conveyor belt 620. The box pressing frame 630 is provided with a front folding plate structure 631, a rear folding plate structure 632, and a side folding plate structure 633. The rear end of the front folding plate structure 631 is provided with a converging structure 6311 that converges forward and downward to fold the front cover plate 102 of the packaging box 101 moving forward. As shown in Figure 9, the front cover plate 102 of the packaging box 101 moving forward will contact the converging structure 6311 and gradually fold downward as it moves forward. The front end of the converging structure 6311 is connected to a horizontal section 6312 to continuously press the front cover plate 102 that has been folded. Specifically, the converging structure 6311 is an arc plate, and the horizontal section 6312 is a horizontal plate.

[0071] The rear folding plate structure 632 is movably installed on the pressing box frame 630 and is used to fold the rear cover plate 103 of the packing box 101 forward to the front folding plate structure 631 so that it can be pressed by the front folding plate structure 631. The rear end of the side folding plate structure 633 is more forward than the rear end of the front folding plate structure 631. Two side folding plate structures 633 are symmetrically arranged on the left and right to cause the side cover plates 104 of the packing box 101 moving forward to be folded inward and press the front cover plate 102 and the rear cover plate 103. That is, after the rear folding plate structure 632 folds the rear cover plate 103, the rear cover plate 103 will contact the front folding plate structure 631 and thus be pressed by the front folding plate structure 631, thereby realizing the folding and holding of the rear cover plate 103. The rear end of the side folding plate structure 633 is more forward than the rear end of the front folding plate structure 631, so that after the front cover plate 102 and the rear cover plate 103 are folded and pressed by the front folding plate structure 631, the side cover plates 104 on the left and right are then folded and pressed down, so that the side cover plates 104 press on the front cover plate 102 and the rear cover plate 103. Specifically, the side folding plate structure 633 is located in front of the folding structure 6311, and the rear end of the side folding plate structure 633 is more forward than the rear end of the horizontal section 6312. Two side folding plate structures 633 are symmetrically arranged on the left and right to cause the side cover plates 104 of the packing box 101 moving forward to be folded inward and press the front cover plate 102 and the rear cover plate 103. That is, the side cover plates 104 of the packing box 101 moving forward will contact the side folding plate structure 633 and be pressed by the side folding plate structure 633 to be folded downward as the packing box 101 moves forward. The rear folding drive mechanism 640 is installed on the pressing box frame 630 and is used to drive the rear folding plate structure 632 to move. The packing box 101 is driven to move forward by the conveyor belt 620, and the front folding plate structure 631, the rear folding plate structure 632 and the side folding plate structure 633 on the pressing box frame 630 are used to realize the automatic folding and pressing of the cover plate. The whole process does not require manual intervention, greatly reducing the time and labor required for sealing the box. There is no need for multiple drive mechanisms to drive the robotic arm to perform complex cover plate folding operations. Only the rear folding plate structure 632 needs to be driven by the rear folding drive mechanism 640. The front folding plate structure 631 and the side folding plate structure 633 directly rely on the conveyor belt 620 to drive the packing box 101 to move forward to realize the gradual downward folding of the cover plate, reducing the complexity of the equipment.

[0072] Refer to Figure 10, in some embodiments of the present invention, a stabilizing plate 634 is provided on the box pressing frame 630. The stabilizing plate 634 is located on the front side of the side folding plate structure 633 and is used to press the side cover plate 104. After passing through the side folding plate structure 633, the side cover plate 104 has already pressed the front cover plate 102 and the rear cover plate 103. That is, the stabilizing plate 634 presses all the closed cover plates on the top of the packaging box 101, facilitating subsequent tape sticking by a tape sticking mechanism or manually. The rear end of the stabilizing plate 634 tilts upward, so as to adapt to the slightly arched side cover plate 104 and gradually press the side cover plate 104 down to a fully closed state. The front end of the stabilizing plate 634 has a horizontal plate to continuously press the side cover plate 104 horizontally. A vertical plate 6341 is fixedly connected to the stabilizing plate 634. A strip hole 6342 is provided on the vertical plate 6341. A connection hole corresponding to the strip hole 6342 is provided on the box pressing frame 630. The strip hole 6342 is aligned with the connection hole and a fastener is installed. The fastener can be a screw or a bolt and nut. The position of the strip hole 6342 can be vertically adjusted to align with the connection hole, thereby adjusting the position of the stabilizing plate 634 to adapt to packaging boxes 101 of different heights. It can be understood that a tape sticking mechanism can be provided at the front end of the box pressing frame 630 to seal the top of the packaging box. Of course, manual assistance for tape sticking can also be adopted.

[0073] Referring to Figure 11 , in a specific embodiment of the present invention, the side folding plate structure 633 is a round rod. The circumferential wall surface of the round rod is a curved surface, which can reduce indentation and damage to the cover plate. The rear end of the round rod tilts upward, and the round rods on the left and right sides gradually approach forward. Thus, after the side cover plate 104 contacts the round rod, as the packaging box 101 moves forward with the side cover plate 104, the side cover plate 104 is pressed downward and gradually folds inward by the forwardly and downwardly inclined and gradually approaching round rods. In a further embodiment of the present invention, a connecting column 6331 extending upward is provided at the front end of the round rod. The box pressing frame 630 is provided with a mounting block 635. The mounting block 635 is provided with a vertical hole 6351 and a fastening hole 6352 is provided on the side wall of the mounting block 635. The connecting column 6331 is embedded in the vertical hole 6351 and can be adjusted in height and angle. A set screw is installed on the fastening hole 6352 to fix the connecting column 6331. Thus, the height and angle of the round rod can be adjusted by using the connecting column 6331 to adapt to packaging boxes 101 of different specifications. After adjusting to a suitable position, install the set screw to fix the position, thereby achieving adjustment and fixation. The round rods on both sides usually need to be symmetrically arranged after adjustment.

[0074] In a further embodiment of the present invention, the rear folding plate structure 632 is specifically a swing arm. The rear folding plate structure 632 has an avoidance state and a folding plate state. The rear folding plate structure 632 is hingedly installed on the pressing box frame 630 to realize the switching between the avoidance state and the folding plate state. The rear folding plate structure 632 in the avoidance state is higher than that in the folding plate state to avoid the front and rear movement paths of the packaging box 101. The rear folding plate structure 632 in the folding plate state can fold the rear cover plate 103 of the packaging box 101 towards the front folding plate structure 631. As Figure 9 shown, the rear folding plate structure 632 is in the avoidance state. The rear folding plate structure 632 in the folding plate state can fold the rear cover plate 103 of the packaging box 101 towards the front folding plate structure 631. When it is necessary to fold the rear cover plate 103 of the packaging box 101 forward, the rear folding drive mechanism 640 can be driven to rotate downward to fold the rear cover plate 103 of the packaging box 101 forward. The rear folding drive mechanism 640 can be a telescopic drive mechanism, such as a cylinder or a telescopic motor. Both ends of the telescopic drive mechanism are hinged on the pressing box frame 630.

[0075] In some embodiments of the present invention, the pressing box frame 630 is installed on the mounting frame 610 in a lifting and movable manner, and a lifting drive mechanism is installed on the mounting frame 610 to drive the pressing box frame 630 to lift. Thus, the height of the pressing box frame 630 is adjusted to adapt to the sealing folding plates of packaging boxes of different heights. Specifically, the mounting frame 610 is provided with a vertical frame 611, and a chute 6111 is provided on the vertical frame 611. A lifting frame 636 is installed on the side of the pressing box frame 630, and a nut block 6361 that is embedded in the chute 6111 is provided on the lifting frame 636; the lifting drive mechanism is a motor, and the output shaft of the motor is connected with a lead screw that extends into the chute 6111. The lead screw is in transmission connection with the nut block 6361. Through the screw drive of the screw-nut pair, the rotation of the lead screw drives the nut block 6361 to lift and move, so as to realize the lifting and moving of the pressing box frame 630. In addition, in order to lock the height of the pressing box frame 630, the motor can adopt a motor with an electromagnetic brake or the output shaft and the lead screw are connected with a reducer with a large reduction ratio to prevent the nut block 6361 from floating by increasing the friction force. The setting of a worm and worm gear transmission in the reducer can also realize the function of increasing self-locking.

[0076] Referring to Figures 12 to 15 , in some embodiments of the present invention, the unpacking and bottom-sealing device 100 includes a supporting bracket 110, a side conveyor belt 120, a glue pasting mechanism, a conveying transition belt 180, and a box expanding mechanism 190.

[0077] The supporting bracket 110 includes two spaced-apart support plates 111 on the left and right for supporting the packaging box 101.

[0078] There are two side conveyor belts 120 arranged at intervals on the left and right. The side conveyor belts 120 are located outside the two pallets 111 and are used to drive the packing box 101 to be conveyed forward on the pallet 111. That is, the two pallets 111 are located at the middle and lower positions between the two side conveyor belts 120. It can be understood that in order to adapt to packing boxes 101 of different widths, the side conveyor belts 120 can be movably installed on the support bracket 110 in the left-right direction, so that the spacing can be adjusted to adapt to packing boxes 101 of different widths. The bottom of the support bracket 110 can be slidably installed with a mounting frame in the left-right direction, and the side conveyor belts 120 are installed on the mounting frame. In order to brush away some impurities after the bottom tape of the carton is sealed and make the contact between the tape and the bottom of the carton closer, thereby enhancing the adhesion of the tape, a convex brush can be installed at the front end of the pallet.

[0079] The tape sticking mechanism is used to stick and seal the bottom of the packing box 101 passing through the pallet 111; before the packing box 101 enters the pallet 111, the cover plate at the bottom has been folded and closed, and sticking the tape realizes stable box sealing. The folding and closing of the cover plate at the bottom of the packing box can be operated by a manipulator or manually.

[0080] The transfer transition belt 180 is used to receive the packing box 101 output by the side conveyor belt 120. The box expanding mechanism 190 is used to expand the cover plate at the top of the packing box 101 on the transfer transition belt 180. It can be understood that there is a telescopic and movable baffle on the transfer transition belt 180, so that when the packing box 101 needs to be processed by the box expanding mechanism 190, the baffle can block the packing box 101 on the transfer transition belt 180, and the packing box 101 is aligned with the box expanding mechanism 190. Specifically, referring to Figure 3 , the box expanding mechanism 190 includes a lifting cylinder 191. The telescopic end of the lifting cylinder 191 is connected with a second mounting plate 192. The four sides of the second mounting plate 192 are provided with box expanding plates 193, and the bottoms of the box expanding plates 193 are converged inward. The cover plates on the four sides of the upper end of the packing box 101 may affect the subsequent smooth loading of small-packaged foods into the box. When the box expanding plates 193 descend, the cover plates can be further expanded so that they will not affect the subsequent smooth box loading. It can be understood that a pushing mechanism can also be arranged at the end of the transfer transition belt 180, and the pushing mechanism is used to push the packing box 101 expanded by the box expanding mechanism 190 into the packing box conveyor belt 400. The pushing mechanism can be a telescopic cylinder and a push plate connected to the push rod of the telescopic cylinder.

[0081] Referring to Figures 12 to 15 , in a further embodiment of the present invention, the tape sticking mechanism includes a first pressing frame 130, a second pressing frame 140 and a first reset structure 142.

[0082] The first pressing frame 130 is hinged between the two supporting plates 111, and a first pressing roller 131 is rotatably installed on the top of the first pressing frame 130, and the first pressing roller 131 can rotate along its own axis. The first pressing frame 130 has a waiting state and a glue pressing state; in the waiting state, the upper end of the first pressing roller 131 is higher than the upper end of the supporting plate 111; in the glue pressing state, the first pressing roller 131 is pressed below by the packaging box 101 on the supporting plate 111, and the tape is pressed against the bottom of the packaging box 101, so that as the packaging box 101 moves, the tape is fully pressed against the bottom of the packaging box 101. It is understandable that a tape roller 170 will be installed under the pallet 111, and a roll of tape will be installed on the tape roller 170. The side of the tape without glue will be wound around the first pressure roller 131. When the packaging box 101 moves forward, the front side of the packaging box 101 will first contact the first pressure roller 131 and the tape on the first pressure roller 131, and the front end of the tape will first stick to the front side of the packaging box 101, and as the packaging box 101 continues to move forward, the first pressure roller 131 will stick the tape to the bottom of the packaging box 101 from the front side of the packaging box 101.

[0083] The second press frame 140 is hinged between the two support plates 111. The second press frame 140 is located in front of the first press frame 130. A second press roller 141 is rotatably installed on the top of the second press frame 140. The second press frame 140 has an upper state and a folded state. When in the upper state, the upper end of the second press roller 141 is higher than the upper end of the support plate 111. When in the folded state, the height of the second press roller 141 is lower than the upper state and can allow the packaging box 101 to pass over. That is, at this time, the upper end of the second press roller 141 is flush or nearly flush with the upper end of the support plate 111, and the second press roller 141 will fit with the bottom of the packaging box 101, thereby further compacting the tape. The second pressing frame 140 is connected to the first pressing frame 130 through a linkage transmission. When the second pressing frame 140 is in the upper pushing state, the first pressing frame 130 is in the waiting pressing state; when the second pressing frame 140 is in the folded state, the first pressing frame 130 is in the glue pressing state, that is, the second pressing roller 141 and the first pressing roller 131 are simultaneously opened upward or folded downward; and in the process of moving from the folded state to the upper pushing state, the second pressing frame 140 has at least one tail pressing stroke, during which the rotation activity of the second pressing frame 140 will cause the second pressing roller 141 to move forward and the height of the second pressing roller 141 will gradually increase during the forward movement; so that when the packaging box 101 gradually separates from the second pressing roller 141, the second pressing roller 141 will spread the tape from the bottom surface of the packaging box 101 to the rear side surface of the packaging box 101, ensuring that the rear end of the bottom tape will extend to the rear side surface of the packaging box 101. It is understandable that when the packaging box 101 enters the pallet 111, the cardboard at the bottom of the packaging box 101 has been folded inwards and covers the bottom opening.

[0084] The first restoring structure 142 is used to push the first pressing frame 130 in the glue pressing state to return to the standby pressing state.

[0085] As Figure 12 and Figure 15 shown, in order to integrally mount the first pressing frame 130 and the second pressing frame 140 on the pallet 111, two first mounting plates 115 which are arranged at intervals left and right are detachably mounted on the inner sides of the two pallets 111. The first mounting plates 115 are fixedly mounted on the pallets 111. The components mounted on the first mounting plates 115 are equivalent to being indirectly mounted on the pallets 111. During installation, the first pressing frame 130 and the second pressing frame 140 can be first mounted on the first mounting plates 115, and then the first mounting plates 115 are fixedly mounted on the pallets 111, so that after the first pressing frame 130 and the second pressing frame 140 are conveniently mounted in an open space, they are integrally mounted on the pallets 111, which is convenient for installation.

[0086] The coordinated operation of the first pressing frame 130 and the second pressing frame 140 enables the tape to be accurately pressed on the bottom of the packing box, realizing rapid box sealing and significantly improving the box sealing efficiency. Compared with the traditional box sealing device that adopts multiple driving mechanisms such as cylinders and motors, in the present invention, the second pressing frame 140 and the first pressing frame 130 are connected by a linkage member to realize their coordinated movement, reduce the number of driving mechanisms used, simplify the structural design, reduce the equipment cost and the maintenance difficulty. Moreover, the movement of the first pressing frame 130 is also switched to the glue pressing state under the push of the packing box 101, and is automatically pushed by the first reset structure 142 to restore the first pressing frame 130 from the glue pressing state to the state to be pressed, without arranging an additional driving mechanism to drive the movement of the first pressing frame 130 and the second pressing frame 140; realizing the automatic cyclic operation of the box sealing process, reducing manual intervention, and further improving the operation stability and reliability of the equipment. The switching between the state to be pressed and the glue pressing state of the first pressing frame 130, and the switching between the upward pressing state and the folding state of the second pressing frame 140 ensure the accurate pasting of the tape on the bottom of the packing box. Especially in the tail pressing stroke of the second pressing frame 140, the forward movement and height change of the second pressing roller 141 further compact the tape, ensuring the firmness and flatness of the box sealing and significantly improving the box sealing quality.

[0087] Referring to Figures 13 to 15 , in a further embodiment of the present invention, the tape pasting mechanism further includes a tape cutting mechanism 150, which is located between the first pressing frame 130 and the second pressing frame 140 and between the two pallets 111, and is used for cutting the tape passing above, so as to realize automatic tape cutting.

[0088] Specifically, the tape cutting mechanism 150 includes a tape cutting frame 151. The tape cutting frame 151 is provided with a toggle handle 1511, and a cutting knife 152 is provided on the tape cutting frame 151. The tape cutting frame 151 has a pressed state and an initial state, and the tape cutting frame 151 is movably installed on the support plate 111 to realize the switching between the pressed state and the initial state. In the initial state, the blade of the cutting knife 152 is higher than the top end of the support plate 111. In the pressed state, the blade of the cutting knife 152 is lower than the top end of the support plate 111. The toggle handle 1511 is used to contact the forward-moving packaging box 101 and drive the tape cutting frame 151 to move from the initial state to the pressed state until it is switched to the pressed state under the push of the packaging box 101. The blade of the cutting knife 152 does not protrude beyond the edge of the toggle handle 1511, and the cutting knife 152 and the toggle handle 1511 are arranged offset in the left-right direction. It can be understood that in order for the cutting knife 152 to cut the tape, the cutting knife 152 is arranged at the middle position in the left-right direction, so as to cut the tape attached to the middle position of the bottom of the packaging box 101. The cutting knife 152 and the toggle handle 1511 are arranged offset in the left-right direction. The toggle handle 1511 is located on the left or right side of the cutting knife 152. The toggle handle 1511 is used to prevent the toggle handle 1511 from contacting the tape and affecting the cutting of the tape.

[0089] A second reset structure 153 is connected to the tape cutting frame 151. The second reset structure 153 is used to push the tape cutting frame 151 in the pressed state towards the initial state. The middle part of the tape cutting frame 151 is hinged to the support plate 111. The second reset structure 153 is a tension spring. One end of the second reset structure 153 is connected to the bottom of the tape cutting frame 151, and the other end is connected to the support plate 111. The blade of the cutting knife 152 not protruding beyond the edge of the toggle handle 1511 means that when the packaging box 101 passes by the cutting knife 152, the packaging box 101 is always in contact with the toggle handle 1511, and the blade of the cutting knife 152 will not contact and damage the packaging box 101. Only when the packaging box 101 passes over the toggle handle 1511 and the cutting knife 152, under the action of the second reset structure 153, the cutting knife 152 bounces upwards to cut the tape. The switching between the pressed state and the initial state of the tape cutting frame 151 enables the cutting knife 152 to automatically complete the cutting action under the push of the packaging box 101, while the second reset structure 153 ensures that the tape cutting frame 151 can automatically return to the initial state, realizing the automation of the cutting operation. A first positioning post 112 is provided inside the support plate 111. The first positioning post 112 is used to abut against the tape cutting frame 151 in the initial state. The tension spring will pull the tape cutting frame 151 to abut against the first positioning post 112 to maintain the initial state when not under external force. The first positioning post 112 inside the support plate 111 provides stable limit support for the tape cutting frame 151 in the initial state. This not only improves the stability of the tape cutting mechanism 150 but also ensures the accurate position of the cutting knife 152 in the initial state.

[0090] In a further embodiment of the present invention, a protective cover 154 is hinged on the tape cutting frame 151 to shield the blade of the cutting knife 152 in the initial state. By hinging the protective cover 154 on the tape cutting frame 151 to shield the blade of the cutting knife 152 in the initial state, it avoids the operator accidentally contacting the blade, improves the safety of the equipment, and reduces the operation risk. It can be understood that in order for the protective cover 154 to reset, a torsion spring is installed on the hinge shaft of the protective cover 154 and the tape cutting frame 151, so that the protective cover 154 can reset to the state of shielding the blade of the cutting knife 152 without external structural interference. In addition, in order for the protective cover 154 not to shield the blade of the cutting knife 152 when cutting the tape, an extension strip 1541 is provided on the side of the protective cover 154, so that when the tape cutting frame 151 and the cutting knife 152 just reach the initial state, the extension strip 1541 is still higher than the upper end of the pallet 111, so that when the packing box 101 continues to move, it can drive the protective cover 154 to move relative to the cutting knife 152 to open the upper space of the cutting knife 152 and cancel the shielding of the cutting knife 152; as Figure 14 shown, when the packing box 101 moves forward, compared with the extension strip 1541, the tail of the packing box 101 will first cross the toggle handle 1511 and thus be separated from the toggle handle 1511, so that the cutting knife 152 pops up upward without being shielded by the protective cover 154 to realize the cutting of the tape.

[0091] In a further embodiment of the present invention, the linkage member includes a connecting rod 160. One end of the connecting rod 160 is hinged to the first pressing frame 130, and the other end is hinged to the second pressing frame 140. The linkage member realizes the coordinated movement of the two, simplifies the structure of the equipment, improves the synchronism and stability of the bottom sealing operation, and ensures the efficiency and reliability of the case sealing process. A second positioning post 113 is provided on the pallet 111, and a positioning groove 161 is provided on the connecting rod 160. In the state to be pressed, the second positioning post 113 is inserted into the positioning groove 161 and abuts against the side wall of the positioning groove 161. When moving towards the state of pressing the glue, the second positioning post 113 and the positioning groove 161 will separate and will not interfere with the movement of the connecting rod 160, the first pressing frame 130 and the second pressing frame 140. In the state to be pressed, the second positioning post 113 is inserted into the positioning groove 161 to ensure that the first pressing frame 130 and the second pressing frame 140 are kept in the correct positions, further optimizing the accuracy and stability of the bottom sealing process. The first reset structure 142 is a tension spring. One end of the first reset structure 142 is connected to the pallet 111, and the other end is connected to the first pressing frame 130 or the second pressing frame 140.

[0092] In a further embodiment of the present invention, a guiding plate 114 is provided at the rear side of the pallet 111, and the guiding plate 114 is inclined upward and forward. By the upward and forward inclination setting of the guiding plate 114, the possible jamming or deviation of the packing box 101 during the conveying process is reduced, further optimizing the smoothness and reliability of the bottom sealing process.

[0093] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic packing and boxing equipment for packaged food, characterized in that, Comprising: An unpacking and bottom-sealing device (100) for sealing the bottom of a packing box (101); A material-receiving conveyor belt (200); A material-feeding conveyor belt (300) for feeding materials to the material-receiving conveyor belt (200), and a positioning structure is provided above the material-receiving conveyor belt (200) to position the materials entering the material-receiving conveyor belt (200); A packing-box conveyor belt (400) for receiving the packing box (101) output by the unpacking and bottom-sealing device (100), and the packing-box conveyor belt (400) extends to the side of the material-receiving conveyor belt (200) opposite to the material-feeding conveyor belt (300); A packing mechanism (500) for transferring the materials on the material-receiving conveyor belt (200) into the packing box on the packing-box conveyor belt (400); A box-sealing folding-plate mechanism (600) for folding and sealing the top of the packing box (101) containing materials output by the packing-box conveyor belt (400).

2. The automatic packing equipment for packed foods according to claim 1, characterized in that, The packing mechanism (500) includes: A packing rack (510) erected above the material-receiving conveyor belt (200) and the packing-box conveyor belt (400); A sliding rack (520) slidably mounted on the top of the packing rack (510); A first lifting driving mechanism (530) installed on the sliding rack (520), with a telescopic lifting movable end provided at the bottom, and the lifting movable end is connected to a material-transferring rack (531), and the material-transferring rack (531) can grab the materials on the material-receiving conveyor belt (200) and then transfer them into the packing box (101) on the packing-box conveyor belt (400).

3. The automatic packing equipment for packed food according to claim 2, characterized in that, The positioning structure includes a material-blocking plate (700) and side alignment plates (710); The material-blocking plate (700) is located above the output side of the material-receiving conveyor belt (200) and is used to block the materials for the materials to abut and be positioned; There are two side alignment plates (710) and they are located on both sides above the material-receiving conveyor belt (200); The two side alignment plates (710) and the material-blocking plate (700) form a material-receiving groove with an opening facing the material-feeding conveyor belt (300).

4. The automatic packing equipment for packed food according to claim 3, characterized in that, An installation base (210) is provided below the material-receiving conveyor belt (200); a second lifting driving mechanism (720) is installed on the installation base (210), the telescopic movable end of the second lifting driving mechanism (720) is connected to a lifting rack (721), a first horizontal telescopic driving mechanism (722) is installed on the lifting rack (721), and the telescopic end of the first horizontal telescopic driving mechanism (722) is connected to the material-blocking plate (700) to drive the material-blocking plate (700) to move horizontally along the conveying direction of the material-receiving conveyor belt (200); an inclined chute plate (220) is installed on the installation base (210), the inclined chute plate (220) is located at the output side of the material-receiving conveyor belt (200) and is used to receive the materials output by the material-receiving conveyor belt (200); a second horizontal telescopic driving mechanism (711) is installed on the installation base (210), there are two second horizontal telescopic driving mechanisms (711) and they are symmetrically arranged on both sides of the material-receiving conveyor belt (200), and the telescopic ends of the second horizontal telescopic driving mechanisms (711) are connected to the side alignment plates (710).

5. The automatic packing equipment for packed food according to claim 1, characterized in that, The case-sealing folding plate mechanism (600) includes: A mounting frame (610); Conveyor belts (620) installed at the upper end of the mounting frame (610) and spaced left and right, for driving the packaging box (101) entering between the two conveyor belts (620) to move forward; A box-pressing frame (630) connected to the mounting frame (610) and located above the conveyor belts (620). The box-pressing frame (630) is provided with a front folding plate structure (631), a rear folding plate structure (632), and side folding plate structures (633); at the rear end of the front folding plate structure (631), there is a converging structure (6311) that converges forward and downward to fold the front cover plate (102) of the packaging box (101) moving forward; the rear folding plate structure (632) is movably installed on the box-pressing frame (630) for folding the rear cover plate (103) of the packaging box (101) towards the front folding plate structure (631) so as to be pressed by the front folding plate structure (631); the rear end of the side folding plate structure (633) is more forward than the rear end of the front folding plate structure (631), and two side folding plate structures (633) are symmetrically arranged on the left and right to turn the side cover plates (104) of the packaging box (101) moving forward inward and press the front cover plate (102) and the rear cover plate (103); A rear folding driving mechanism (640) installed on the box-pressing frame (630) for driving the rear folding plate structure (632) to move.

6. The automatic packing equipment for packed food according to claim 5, characterized in that, The rear folding plate structure (632) has an avoidance state and a folding plate state. The rear folding plate structure (632) is hinged to the box-pressing frame (630) to realize the switching between the avoidance state and the folding plate state. The rear folding plate structure (632) in the avoidance state is higher than that in the folding plate state to avoid the front and rear movement paths of the packaging box (101). The rear folding plate structure (632) in the folding plate state can fold the rear cover plate (103) of the packaging box (101) towards the front folding plate structure (631).

7. The automatic packing equipment for packed food according to claim 6, characterized in that, The box-pressing frame (630) is installed on the mounting frame (610) in a lifting and movable manner, and a lifting driving mechanism is installed on the mounting frame (610) to drive the box-pressing frame (630) to lift.

8. The automatic packing equipment for packed foods according to claim 1, characterized in that, The case-opening and bottom-sealing device (100) includes: A supporting bracket (110) including two spaced-apart supporting plates (111) on the left and right for supporting the packaging box (101); Two side conveyor belts (120) spaced left and right and located outside the two supporting plates (111) for driving the packaging box (101) to be conveyed forward on the supporting plates (111); A glue pasting mechanism for pasting and sealing the bottom of the packaging box (101) passing through the supporting plates (111); A transfer conveyor belt (180) for receiving the packaging box (101) output by the side conveyor belts (120); A box-expanding mechanism (190) for expanding the cover plate at the top of the packaging box (101) on the transfer conveyor belt (180).

9. The automatic packing equipment for packed food according to claim 8, characterized in that, The glue pasting mechanism includes: A first pressing frame (130) is hinged between two supporting plates (111); a first pressing roller (131) is rotatably mounted on the top of the first pressing frame (130); the first pressing frame (130) has a standby pressing state and a glue pressing state; in the standby pressing state, the upper end of the first pressing roller (131) is higher than the upper end of the supporting plate (111); in the glue pressing state, the first pressing roller (131) is pressed downward by the packaging box (101) on the supporting plate (111), and the adhesive tape is pressed against the bottom of the packaging box (101); The second pressing frame (140) is hinged between the two supporting plates (111) and is located in front of the first pressing frame (130). A second pressing roller (141) is rotatably installed on the top of the second pressing frame (140). The second pressing frame (140) has an upper state and a folded state. In the upper state, the upper end of the second pressing roller (141) is higher than the upper end of the supporting plate (111). In the folded state, the height of the second pressing roller (141) is lower than the upper state and can allow the packaging box (101) to pass over. The second pressing frame (140) and the first pressing frame (130) are connected. A pressing frame (130) is connected by a linkage, and when the second pressing frame (140) is in an upward state, the first pressing frame (130) is in a waiting state; when the second pressing frame (140) is in a folded state, the first pressing frame (130) is in a glue pressing state; and during the movement from the folded state to the upward state, the second pressing frame (140) has at least a tail pressing stroke, and during the tail pressing stroke, the rotation of the second pressing frame (140) causes the second pressing roller (141) to move forward and increase in height; The first reset structure (142) is used to push the first pressing frame (130) in the glue pressing state to return to the standby pressing state.

10. The automatic boxing and packaging equipment for packaged food according to claim 9, characterized in that, The adhesive laminating mechanism further comprises a tape cutting mechanism (150), which is located between the first pressing frame (130), the second pressing frame (140) and between the two supporting plates (111) and is used for cutting the adhesive tape passing over. The tape cutting mechanism (150) comprises a tape cutting frame (151), the tape cutting frame (151) is provided with a toggle handle (1511), and a cutting knife (152) is provided on the tape cutting frame (151); the tape cutting frame (151) has a downward pressing state and an initial state, and the tape cutting frame (151) is movably mounted on a support plate (111) to realize switching between the downward pressing state and the initial state; in the initial state, the blade of the cutting knife (152) is higher than the top of the support plate (111); in the downward pressing state, the blade of the cutting knife (152) is lower than the top of the support plate (111); the toggle handle (1511) is used to contact with the packaging box (101) moving forward and drive the packaging box (101) to move forward under the push of the packaging box (101). The tape cutting frame (151) moves from an initial state toward a downward pressing state until it switches to the downward pressing state; the blade of the cutting knife (152) does not protrude from the edge of the toggle handle (1511), and the cutting knife (152) and the toggle handle (1511) are staggered in the left-right direction; the tape cutting frame (151) is connected with a second reset structure (153), and the second reset structure (153) is used to push the tape cutting frame (151) in the downward pressing state to move toward the initial state; the middle part of the tape cutting frame (151) is hinged to the supporting plate (111), and the second reset structure (153) is a tension spring, one end of the second reset structure (153) is connected to the bottom of the tape cutting frame (151), and the other end is connected to the supporting plate (111).

Images