A food packaging system

Abstract

The present invention relates to the field of food processing technology, and specifically to a shachima boxing system. A food material sorting and boxing system includes the following devices: a packaging bag conveying mechanism, which conveys a food packaging bag covered with a layer of packaging to a transfer mechanism; a transfer mechanism, which integrates the packaging bags into a set number and then sends them to a transfer conveying mechanism; a transfer conveying mechanism, which sends the integrated packaging bags to a box sending mechanism; a box sending mechanism, which discharges the outer packaging boxes of food and receives the packaging bags sent by the transfer conveying mechanism; a box body conveying mechanism, which sends the outer packaging boxes with packaging bags inside out of the box sending mechanism and sends them to a heating and sealing mechanism, and continues to send them out after the heating and sealing is completed; the control ends of the above-mentioned mechanisms are respectively connected to a control device, and the work of each mechanism is driven by the control of the control device. The present invention is used in the boxing process of multi-layer food, and the whole process has a high degree of automation, does not require manual boxing, and has extremely high work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, and in particular to a shachima box packaging system. Background Art

[0002] In the field of food processing, after the food is processed, it needs to be put into packaging bags or boxes. The existing method is generally to put the food into the packaging bags or boxes manually. This method not only has high labor costs and low labor efficiency, but also easily causes food hygiene problems due to manual operation.

[0003] In addition, although with the gradual development of automation equipment, some foods have been packaged mechanically. However, in the field of shachima processing, since shachima generally adopts two packaging processes, in the prior art, usually in the first process, that is, after the shachima is wrapped with a layer of transparent plastic paper, the shachima wrapped with transparent plastic paper is manually placed in an outer packaging bag or box. Although the problem of manual direct contact with shachima has been solved, the shachima packaging process still has the problems of low automation and low production efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a food material sorting and boxing system to solve the above technical problems.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] A food material packing system, comprising the following devices:

[0007] The packaging bag conveying mechanism conveys the food packaging bag covered with a layer of packaging to the transfer mechanism;

[0008] The transfer mechanism integrates the packaging bags into the set quantity and then sends them to the transfer conveying mechanism;

[0009] The transfer conveying mechanism sends the integrated packaging bags to the box delivering mechanism;

[0010] The box delivery mechanism discharges the outer packaging boxes of food and receives several packaging bags delivered by the transfer conveying mechanism;

[0011] The box conveying mechanism conveys the outer packaging box with the packaging bag inside out of the box conveying mechanism and conveys it to the heating and sealing mechanism, and continues to convey it after the heating and sealing is completed;

[0012] A heating and sealing mechanism heats and seals the plastic sheets on both sides of the outer packaging box;

[0013] The control ends of the packaging bag conveying mechanism, the transfer mechanism, the transit conveying mechanism, the box conveying mechanism, the box body conveying mechanism, and the heating and sealing box mechanism are respectively connected to the control device, and the operation of each mechanism is driven by the control of the control device.

[0014] The present invention adopts the above system, so that the whole process of putting the food packaging bag into the outer packaging box does not need manual operation, but is completed by the organic cooperation of various mechanisms. The whole system is reasonably arranged, the system operation efficiency is high, and a high degree of automated boxing process can be achieved.

[0015] The packaging bag conveying mechanism comprises a packaging bag conveying belt and at least two feeding channels arranged on the packaging bag conveying belt, wherein the at least two feeding channels are arranged in the left-right direction, the left outlet of the feeding channel faces the transfer conveying mechanism, and a distribution mechanism is arranged on the right side of the feeding channel;

[0016] The distribution mechanism comprises a distribution channel arranged on the packaging bag conveyor belt, the distribution channel is arranged left and right and faces one of the feeding channels, and a distribution forward and backward moving mechanism is provided on the distribution channel, and the distribution forward and backward moving mechanism drives the distribution channel to move forward and backward on the packaging bag conveyor belt;

[0017] The distribution forward and backward moving mechanism is connected to the control device, and through the control of the control device, the distribution forward and backward moving mechanism drives the distribution channel toward one of the feeding channels. When the food packaging bags in one of the feeding channels have been placed for a certain period of time, the distribution channel can be directed to another feeding channel to continue feeding, and the other feeding channel can be directed to the next feeding channel after being placed for a certain period of time. In this way, the feeding is cyclically fed, so that each channel will not be piled up with food packaging bags, and there will be no problem of lack of food packaging bags.

[0018] In order to further achieve perfect feeding, the present invention provides a packaging bag sensor for detecting whether there is a food packaging bag above one of the feeding channels. The packaging bag sensor is also connected to the control device. The packaging bag sensor senses whether there is a packaging bag in the channel, and the control device obtains the sensing signal and drives the distribution channel towards a certain feeding channel according to the sensing signal.

[0019] The transfer mechanism includes an automatic material turning mechanism, and the automatic material turning mechanism includes a material turning conveyor belt, the conveying direction of the material turning conveyor belt is the same as the conveying direction of the packaging bag conveying mechanism, and a row of material turning baffles are vertically arranged on the material turning conveyor belt along the conveying direction, and the distance between two adjacent material turning baffles is greater than the thickness of the packaging bag, so as to accommodate the packaging bag delivered by the packaging bag conveying mechanism;

[0020] When the material turning conveyor belt stops conveying, the plate surface of at least one of the material turning baffles is in a horizontal direction and faces the packaging bag conveying mechanism, and the distance between the material turning baffles and the packaging bag conveying mechanism in the horizontal direction is less than the length of the packaging bag;

[0021] The transfer mechanism also includes a pushing mechanism for transferring all the packaging bags between the two material turning baffles to the transfer conveying mechanism, and the integrated packaging bags are sent out through the pushing mechanism.

[0022] The pushing mechanism comprises a first pushing device arranged above the material turning conveyor belt, and a second pushing device arranged behind the first pushing device, the first pushing device comprises an up-and-down moving mechanism for pushing, a forward-and-backward moving mechanism for pushing arranged on the up-and-down moving mechanism for pushing, and a pushing rod arranged below the forward-and-backward moving mechanism for pushing, the pushing rod pushes all packaging bags between the two material turning partitions out of the material turning conveyor belt and pushes them to the rear;

[0023] The second material pushing device comprises a receiving platform arranged at the rear of the push rod, a left-right moving mechanism for bag feeding and a first limit plate arranged on the left-right moving mechanism for bag feeding are arranged above the receiving platform, the longitudinal section of the first limit plate is an L-shaped structure, and the angle is facing downward, the first limit plate is arranged above the receiving platform behind the push rod, the left-right moving mechanism for limiting and the up-and-down moving mechanism for limiting arranged on the left-and-right moving mechanism for limiting are fixed on the first limit plate, the up-and-down moving mechanism for limiting is arranged on the second limit plate, and at least one plate surface of the second limit plate is vertically arranged on the side of the first limit plate away from the angle;

[0024] The control ends of the up-and-down moving mechanism for pushing materials, the front-and-back moving mechanism for pushing materials, the left-and-right moving mechanism for bag feeding, the left-and-right moving mechanism for limiting, and the up-and-down moving mechanism for limiting are all connected to the control device; after the packaging bag pushed out by the push rod is pushed to the receiving table, under the control of the control device, the top and one side of the packaging bag are limited by the first limit plate, and the other side is limited by the second limit plate, and under the movement of the left-and-right moving mechanism for bag feeding, the second pushing device drives the packaging bag to move into the transfer conveying mechanism.

[0025] The push rod includes a connecting rod fixed to the forward and backward moving mechanism for pushing materials, and at least two push blocks are provided on the rear end surface of the lower part of the connecting rod. The space between two adjacent push blocks is hollowed out to facilitate the passage of the flip partition. When the flipping conveyor belt stops conveying, the rear of each push block is located between two adjacent flip partitions. At this time, the push rod, under the operation of the first pushing device, pushes out at least two groups of packaging bags behind it at one time.

[0026] In order to avoid the possibility that there is no packaging bag when the push rod is pushed out, another packaging bag sensor is provided at the outermost side of the push rod. The other packaging bag sensor is connected to the control device. The packaging bag sensor senses whether there is a packaging bag in front of the outermost push rod. The control device obtains the sensing signal and drives the first pushing device to work according to the sensing signal.

[0027] The transfer mechanism of the present invention may also adopt the following structure:

[0028] The transfer mechanism comprises a first transfer platform, the first transfer platform is located in front of the packaging bag conveying mechanism in the conveying direction, a front-rear moving mechanism for transfer is provided on one side of the first transfer platform, a second transfer platform is provided on the other side of the first transfer platform, a left-right moving mechanism for transfer is provided on the upper side of the second transfer platform adjacent to the first transfer platform, and the transfer conveying mechanism is provided on the opposite side of the left-right moving mechanism for transfer;

[0029] The front-to-back moving mechanism for transfer is provided with a first push plate for transfer, and the plate surface of the first push plate for transfer faces the first transfer platform; the left-to-right moving mechanism for transfer is provided with a second push plate for transfer, and the plate surface of the second push plate for transfer faces the second transfer platform;

[0030] The control ends of the front-to-back moving mechanism for transfer and the left-to-right moving mechanism for transfer are both connected to the control device. Under the control of the control device, when the packaging bags delivered by the packaging bag conveying mechanism are delivered to the first transfer table in front, the front-to-back moving mechanism for transfer pushes all the packaging bags onto the second transfer table; the left-to-right moving mechanism for transfer pushes all the packaging bags on the second transfer table toward the transfer conveying mechanism.

[0031] In order to increase the number of packaging bags pushed out, the present invention provides a transfer table up and down moving mechanism at the bottom of the first transfer table, and the transfer table up and down moving mechanism is connected to the control device. Under the control of the control device, after the transfer front and back moving mechanism pushes all the packaging bags to the second transfer table, according to the needs of box loading, after the packaging bag conveying mechanism sends the packaging bags to the first transfer table again, the transfer table up and down moving mechanism drives the first transfer table to move upward, and the transfer front and back moving mechanism pushes a layer of packaging bags to the second transfer table again; according to the needs of box loading, the transfer front and back moving mechanism repeatedly pushes out a layer of packaging bags.

[0032] In order to prevent the packaging bags from falling and ensure the neatness of the packaging bags, a transfer safety plate is provided above the first transfer platform; a transfer safety plate is also provided on one side of the first transfer platform and is located on the opposite side of the packaging bag conveying mechanism; another transfer safety plate is also provided on one side of the second transfer platform and is located on the opposite side of the first transfer platform;

[0033] A transfer pressing plate is provided above the second transfer platform, the transfer pressing plate is connected to a transfer up-and-down moving mechanism, and a control end of the transfer up-and-down moving mechanism is connected to the control device;

[0034] Before the transfer left-right moving mechanism pushes out all the packaging bags on the second transfer table, the transfer up-and-down moving mechanism drives the transfer pressing plate to move downward to flatten all the packaging bags below to ensure subsequent smooth pushing out.

[0035] The transfer conveying mechanism comprises a transfer conveying belt, which is arranged on the side of the transfer mechanism, and a row of transfer partitions are vertically arranged on the transfer conveying belt along the conveying direction, and the distance between two adjacent transfer partitions is greater than the width of all the integrated packaging bags, so as to accommodate the packaging bags delivered by the transfer mechanism;

[0036] A left-right moving mechanism for transfer is provided on the side of the transfer conveyor belt, and a transfer push plate is provided on the left-right moving mechanism for transfer. When the transfer conveyor belt stops moving, the transfer push plate is located on the side between two adjacent transfer partitions;

[0037] The control end of the transfer left-right moving mechanism is connected to the control device. Under the control of the control device, the transfer push plate pushes the packaging bag between two adjacent transfer partitions into the box body of the outer packaging box of the box delivery mechanism.

[0038] A flattening mechanism is also provided above the transfer conveyor belt, the flattening mechanism includes a flattening up and down moving mechanism, a transfer flattening plate arranged on the flattening up and down moving mechanism, and the transfer flattening plate is horizontally arranged above the transfer conveyor belt;

[0039] The flattening up and down moving mechanism is connected to the control device. When the transfer conveyor belt stops moving, the transfer flattening plate is located above the two adjacent transfer partitions. At this time, under the control of the control device, the transfer flattening plate moves downward to flatten and organize the packaging bags between the two adjacent transfer partitions.

[0040] The transfer conveyor belt is provided with a manual placing mechanism at the rear side along the conveying direction, and the transfer mechanism is located in front of the manual placing mechanism along the conveying direction;

[0041] The instruction manual placement mechanism comprises a paper placing mechanism and a paper lowering mechanism located below the paper placing mechanism, wherein the paper placing mechanism comprises a paper placing basket opened up and down, and upper supporting plates are respectively provided on both sides of the bottom of the paper placing basket;

[0042] It also includes a vertical moving mechanism for lowering paper, wherein the vertical moving mechanism for lowering paper is provided with at least one vacuum suction cup for lowering paper, and the vacuum suction cup for lowering paper is located below the paper placing basket, and the disk surface of each vacuum suction cup for lowering paper faces the paper placing basket above;

[0043] A lower support plate is provided below each of the upper support plates, and when the lower paper vacuum suction cup moves upward, it passes through the lower support plates on both sides;

[0044] A left-right moving mechanism for placing paper is provided on the left side of the lower support plate, and a push paper board is provided at the end of the left-right moving mechanism for placing paper, and the board surface of the push paper board faces between the two lower support plates;

[0045] The control ends of the up-down moving mechanism for lowering paper, each vacuum suction cup for lowering paper, and the left-right moving mechanism for placing paper are all connected to the control device. Under the control of the control device, the vacuum suction cup for lowering paper moves upward and sucks the instructions in the paper placing basket. Under the downward action of the up-down moving mechanism for lowering paper, the upper support plates on both sides cannot continue to hold the instructions. During the downward process of the instructions, they fall onto the two lower support plates and are held by the lower support plates on both sides. Under the rightward action of the left-right moving mechanism for placing paper, the pushing paper board pushes the instructions on the right side between the two transfer partitions. The packaging bag delivered by the transfer mechanism is located above the instructions.

[0046] The box conveying mechanism comprises box conveying tracks on both sides, a box conveying belt arranged between the two box conveying tracks, a row of limit rods vertically arranged along the conveying direction on each of the box conveying tracks, and four limit rods on both sides form a group to form a rectangular limit frame on the box conveying belt;

[0047] The box delivery mechanism includes a box placing mechanism and a box lowering mechanism located below the box placing mechanism. The box placing mechanism includes a box placing basket opened at the top and bottom. The bottom corners of the box placing basket are respectively provided with elastic mechanisms.

[0048] The box lowering mechanism comprises at least one vacuum suction cup located below the box placing basket, the vacuum suction cup is located behind the box conveying belt in the conveying direction and between the two box conveying tracks;

[0049] It also includes a lower box up-and-down moving mechanism, each of the vacuum suction cups is arranged on the lower box up-and-down moving mechanism, and the plate surface of each of the vacuum suction cups faces the upper box placing basket;

[0050] The box conveying mechanism, the lower box up-and-down moving mechanism, and the control end of each vacuum suction cup are all connected to the control device. Under the control of the control device, the vacuum suction cup moves upward to suck the box in the box placing basket. Under the downward action of the lower box up-and-down moving mechanism, the elastic mechanism releases the box, and the box falls into the rectangular limit frame of the box conveying mechanism during the downward process.

[0051] A set of box body propping devices is provided above each of the box body conveying tracks, and the box body propping devices include an upper and lower support plate arranged along the conveying direction of the box body conveyor belt, and a bent plate is provided at the end of each of the support plates, the upper bent plate end is bent downward; the lower bent plate end is bent upward; and the distance between the upper and lower support plates is not greater than the height of the box body;

[0052] When the box conveying track moves forward, the box in the rectangular limit frame is driven to move forward. During the movement, the upper and lower plastic sheets on both sides of the box are opened by the bent plates of the box opening device, and are respectively located above the upper support plate and below the lower support plate;

[0053] An auxiliary opening device is also provided on one side of the box conveyor belt, and the auxiliary opening device includes two symmetrically arranged auxiliary opening rods, one end of each of the auxiliary opening rods faces the same rectangular limit frame, and the other end of each of the auxiliary opening rods is respectively connected to the opening rotating mechanism;

[0054] The packaging bag delivered by the transfer conveying mechanism is delivered into the box body in the rectangular limit frame toward which the auxiliary propping rod faces;

[0055] The two rotating mechanisms for opening are connected to the control device. When the box conveyor belt stops moving, under the control of the control device, the two rotating mechanisms rotate, driving the auxiliary opening rods thereon to rotate, and the rotation directions of the two auxiliary opening rods are opposite rotations. During the rotation, the left and right plastic sheets on both sides of the box body in the front rectangular limit frame are opened. At this time, the packaging bag sent out by the transfer conveying mechanism is sent into the box body.

[0056] Two guide rods are also arranged above the box conveyor belt, and a guide piece is arranged at the end of each guide rod, and the guide piece is a semicircular arc piece, and the opening of the guide piece faces forward;

[0057] The guide sheet is located between the two groups of bent plates;

[0058] When the box body in the rectangular limiting frame moves forward, the front side of the box body hits the guide pieces on the two guide rods, and at the same time, under the action of the two sets of bent plates, the inside of the box body is expanded.

[0059] The heating box sealing mechanism comprises heating box sealing devices arranged on both sides of the box conveying belt of the box conveying mechanism, the heating box sealing device comprises a left-right moving mechanism for box sealing, and a box sealing die head arranged on the left-right moving mechanism for box sealing, each of the box sealing die heads faces the box conveying belt;

[0060] A box sealing vertical plate is also provided on both sides of the box conveyor belt between the heating box sealing device and the box feeding mechanism. The front of the box sealing vertical plate extends to between the box sealing die head and the box conveyor belt. The rear end of the box sealing vertical plate is inclined outward to form an inclined guide end. The box sealing vertical plate limits the left and right plastic sheets of the box body. When the box body passes through the box sealing vertical plate, the front plastic sheet is closed in the box sealing vertical plate under the limitation of the box sealing vertical plate.

[0061] An L-shaped vertical plate is further provided behind the box sealing vertical plate, one section of the L-shaped vertical plate is connected to the box sealing rotating mechanism, and the box sealing rotating mechanism is connected to a control device. Under the action of the control device, the box sealing rotating mechanism is driven to rotate, and when the end surface of the other section of the L-shaped vertical plate approaches the box sealing vertical plate, the plastic sheet passing behind the box sealing vertical plate is clamped into the box sealing vertical plate, thereby realizing the folding process of the front and rear plastic sheets of the box body;

[0062] A box sealing guide rod is provided in front of the L-shaped vertical plate, and the box sealing guide rod is located on the outside of the box sealing vertical plate and between the box sealing die head and the box body conveyor belt. The rear end of the box sealing guide rod is tilted upward and faces the rear of the box body conveyor belt. A vertical box sealing limit plate is provided on the outside of the box sealing guide rod. The height of the box sealing limit plate is lower than the height of the box sealing vertical plate. One end of the box sealing limit plate is connected to a triangular panel integrally formed therewith, and the triangular panel is located on the box sealing guide rod. The bottom of the warped part, and one corner faces the rear of the box conveyor belt; when the box passes through the box sealing guide rod, the rear of the box sealing guide rod warps upward, so the plastic sheet above the box body is guided downward and clamped outside the box sealing guide rod; at this time, due to the effect of the triangular panel of the box sealing limit plate, the lower plastic sheet is guided upward, and the two plastic sheets overlap outside the box sealing vertical plate outside the box sealing guide rod, and are confined between the box sealing vertical plate and the box sealing limit plate, thereby realizing the folding process of the upper and lower plastic sheets of the box body;

[0063] The left-right moving mechanism for sealing the box is connected to the control device. When the gathered box body passes through the heated box sealing device, under the action of the control device, the left-right moving mechanism for sealing the box drives the box sealing die to move, and the box sealing die performs heat-seal on the gathered plastic sheet. After the box sealing is completed, the box body conveyor belt delivers the box body that has been packed.

[0064] A box sealing compacting device is also provided above both sides of the box body conveyor belt, the box sealing compacting device is located between the two box sealing die heads, and the box sealing compacting device includes a compacting up and down moving mechanism and a compacting plate located on the compacting up and down moving mechanism;

[0065] The pressing device is connected to the control device with an up-and-down moving mechanism. When the box sealing die performs heat sealing on the box body, under the control of the control device, the pressing device drives the up-and-down moving mechanism to press the box body on the box conveyor belt, and the box sealing die heats the plastic sheet on the side of the box body to perform box sealing.

[0066] Beneficial effects: Due to the adoption of the above technical scheme, the present invention is used in the boxing process of multi-layer food, the whole process has a high degree of automation, no manual boxing is required, and the work efficiency is extremely high. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is an overall plan schematic diagram of the present invention;

[0068] Figure 2 A three-dimensional diagram of the packaging bag conveying mechanism of the present invention;

[0069] Figure 3 A three-dimensional diagram of the automatic material turning mechanism of the transfer mechanism of the present invention;

[0070] Figure 4 A stereoscopic diagram of the pushing mechanism of the transfer mechanism of the present invention;

[0071] Figure 5 Another structural schematic diagram of the transfer mechanism of the present invention;

[0072] Figure 6 It is a partial stereogram of the present invention;

[0073] Figure 7 for Figure 6 Side view of

[0074] Figure 8 A three-dimensional diagram of the instruction manual placement mechanism of the present invention;

[0075] Fig. 9 A three-dimensional diagram of the box feeding mechanism of the present invention;

[0076] Fig.10 A three-dimensional diagram of the auxiliary expansion device of the present invention;

[0077] Fig.11 A three-dimensional diagram of the heating and sealing mechanism of the present invention;

[0078] Fig.12 A structural diagram of the box body of the invention when it is folded;

[0079] Fig.13 It is a top view of the structure of the box body of the present invention when it is folded. DETAILED DESCRIPTION

[0080] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0081] Reference Figures 1 to 13 A food material sorting and boxing system includes the following devices: a packaging bag conveying mechanism 1, which conveys a food packaging bag covered with a layer of packaging to a transfer mechanism 2. The transfer mechanism 2, after integrating the packaging bags into a set number, sends them to a transfer conveying mechanism 3. The transfer conveying mechanism 3, sends the integrated packaging bags to a box sending mechanism 4. The box sending mechanism 4 discharges the outer packaging boxes of food and receives the packaging bags sent by the transfer conveying mechanism 3. The box body conveying mechanism 5 sends the outer packaging box with the packaging bag inside out of the box sending mechanism 4 and sends it to the heating and sealing mechanism 6, and continues to send it out after the heating and sealing is completed. The heating and sealing mechanism 6 heats and seals the plastic sheets on both sides of the outer packaging box. The control ends of the packaging bag conveying mechanism 1, the transfer mechanism 2, the transfer conveying mechanism 3, the box sending mechanism 4, the box body conveying mechanism 5, and the heating and sealing mechanism 6 are respectively connected to the control device, and the operation of each mechanism is driven by the control of the control device. The present invention adopts the above system, so that the whole process of putting the food packaging bag into the outer packaging box does not need manual operation, but is completed by the organic cooperation of various mechanisms. The whole system is reasonably arranged, the system operation efficiency is high, and a high degree of automated boxing process can be achieved.

[0082] When the present invention is used for packing shachima materials into a box, the following structure can be specifically adopted:

[0083] Reference Figure 2 , Figure 3The packaging bag conveying mechanism 1 includes a packaging bag conveyor belt 11 and three feeding channels 12 arranged on the packaging bag conveyor belt 11. The three feeding channels 12 are all arranged in the left-right direction. The left outlet of the feeding channel faces the transfer conveying mechanism 3, and a distribution mechanism is arranged on the right side of the feeding channel. The distribution mechanism includes a distribution channel 13 arranged on the packaging bag conveyor belt 11. The distribution channel 13 is arranged in the left-right direction and faces one of the feeding channels. A distribution forward and backward moving mechanism 14 is arranged on the distribution channel 13. The distribution forward and backward moving mechanism 14 drives the distribution channel 13 to move forward and backward on the packaging bag conveyor belt 11. The distribution forward and backward moving mechanism 14 is connected to the control device. Through the control of the control device, the distribution forward and backward moving mechanism 14 drives the distribution channel 13 toward a certain feeding channel. In order to further achieve perfect feeding, the present invention is provided with a packaging bag sensor 15 for detecting whether there is a food packaging bag above the middle feeding channel. The packaging bag sensor 15 can be an infrared sensor. The packaging bag sensor 15 is connected to the control device. The packaging bag sensor 15 senses whether there is a packaging bag in the channel. The control device obtains the sensing signal and drives the distribution channel 13 toward a certain feeding channel according to the sensing signal. Such a design can achieve the problem that each channel will not have a backlog of food packaging bags or a shortage of food packaging bags.

[0084] Reference Figure 3 , a transfer mechanism 2 is provided on the left side of the packaging bag conveying mechanism 1. The transfer mechanism 2 includes an automatic material turning mechanism. The automatic material turning mechanism includes a material turning conveyor belt. The conveying direction of the material turning conveyor belt is the same as that of the packaging bag conveyor belt 11, that is, both are conveyed from right to left. A row of material turning baffles 21 are vertically provided on the material turning conveyor belt along the conveying direction. The distance between two adjacent material turning baffles 21 is greater than the thickness of the packaging bag, so as to accommodate the packaging bag delivered by the feeding channel. When the material turning conveyor belt stops conveying, the plate surface of a material turning baffle 21 is horizontal and faces the packaging bag conveyor belt 11 on the right side. The distance between the horizontal material turning baffle 21 and the packaging bag conveyor belt 11 is less than the length of the packaging bag. When the packaging bags in the three feeding channels 12 on the packaging bag conveyor belt 11 are pushed from right to left, they just fall on the material turning baffle 21 on the left side. Every time the material turning conveyor belt stops, three packaging bags fall on one material turning baffle 21. When the material turning conveyor belt moves again, the three packaging bags are driven to move to the left, and the three packaging bags are confined between the two material turning partitions 21.

[0085] Reference Figure 4The transfer mechanism 2 also includes a push mechanism for transferring the three packaging bags between the two material turning baffles 21 to the transfer conveyor mechanism 3, and the integrated packaging bags are sent out by the push mechanism. The push mechanism includes a first push device arranged above the material turning conveyor belt, and a second push device arranged behind the first push device. The first push device includes an up-down moving mechanism 22 for pushing, a forward-backward moving mechanism 23 for pushing arranged on the up-down moving mechanism 22 for pushing, and a push rod 24 arranged below the forward-backward moving mechanism 23 for pushing. The push rod 24 pushes the three packaging bags between the two material turning baffles 21 out of the material turning conveyor belt and pushes them to the rear. The push rod 24 includes a connecting rod fixed to the forward-backward moving mechanism 23 for pushing. Six push blocks are arranged on the rear end surface of the lower part of the connecting rod. The space between two adjacent push blocks is hollowed out to facilitate passing through the turning baffle. When the material turning conveyor belt stops conveying, the rear of each push block is located between two adjacent turning baffles. At this time, the push rod 24 pushes out the six groups of packaging bags behind it at one time under the operation of the first push device. In order to avoid the possibility that there is no packaging bag when the push rod 24 is pushed out, another packaging bag sensor is provided on the far left of the push rod 24. The other packaging bag sensor is connected to the control device. The packaging bag sensor senses whether there is a packaging bag in front of the far left push rod 24. The control device obtains the sensing signal and drives the first pushing device to work according to the sensing signal. For example, when there is no packaging bag, it continues to wait for the conveyor belt to convey until there is a packaging bag on the far left. The push rod 24 pushes out six groups of packaging bags at a time, and each group of packaging bags contains three packaging bags, that is, 3*6 packs of packaging bags.

[0086] The second material pushing device includes a receiving platform 25 arranged behind the push rod 24, a left-right moving mechanism 26 for bag feeding and a first limit plate 27 arranged on the left-right moving mechanism 26 for bag feeding are arranged above the receiving platform 25, the longitudinal section of the first limit plate 27 is an L-shaped structure, and the angle is facing downward, the first limit plate 27 is arranged above the receiving platform 25 behind the push rod 24, a left-right moving mechanism 28 for limit and a limit up-down moving mechanism 29 for limit arranged on the left-right moving mechanism 28 for limit are fixed on the first limit plate 27, and a second limit plate 210 is arranged on the limit up-down moving mechanism 29, and at least one plate surface of the second limit plate 210 is vertically arranged on the side of the first limit plate 27 away from the angle. The control ends of the up-down moving mechanism 22 for pushing, the front-back moving mechanism 23 for pushing, the left-right moving mechanism 26 for bag feeding, the left-right moving mechanism 28 for limit, and the up-down moving mechanism 29 for limit are all connected to the control device. After the packaging bag pushed out by the push rod 24 is pushed to the receiving platform 25, under the control of the control device, the top and right side of the packaging bag are limited by the first limit plate 27, and the left side is limited by the second limit plate 210 after moving downward and rightward. When the left-right moving mechanism 26 for feeding the bag moves to the left, under the clamping of the first limit plate 27 and the second limit plate 210, the second pushing device drives the packaging bag to move into the transfer conveying mechanism 3.

[0087] Reference Figure 5 The transfer mechanism 2 of the present invention may also adopt the following structure: the transfer mechanism 2 includes a first transfer platform, which is located in front of the conveying direction of the packaging bag conveying mechanism 1, that is, the first transfer platform is located on the left side of the packaging bag conveying belt 11, and a front-to-back moving mechanism 211 for transfer is provided on the front-to-back moving mechanism 211 for transfer, and a first push plate for transfer is provided on the front-to-back moving mechanism 211 for transfer, and the plate surface of the first push plate for transfer faces the first transfer platform. A transfer platform up-and-down moving mechanism is provided at the bottom of the first transfer platform. A transfer safety plate 212 is provided on the top and left side of the first transfer platform. A second transfer platform 213 is provided on the rear side of the first transfer platform, and another transfer safety plate 214 is provided on the rear side of the second transfer platform 213. A left-right moving mechanism 215 for transfer is provided on the right side of the second transfer platform 213, and a second push plate 216 for transfer is provided on the left-to-right moving mechanism 215 for transfer, and the plate surface of the second push plate 216 for transfer faces the second transfer platform 213. A transfer conveying mechanism 3 is provided on the opposite side of the left-to-right moving mechanism 215 for transfer, that is, a transfer conveying mechanism 3 is provided on the left side of the second transfer platform 213. A transfer pressing plate 217 is provided above the second transfer platform 213 , and the transfer pressing plate 217 is connected to a transfer up-and-down moving mechanism 218 .

[0088] The control ends of the front-to-back moving mechanism 211 for transfer, the left-right moving mechanism 215 for transfer, the transfer table up-and-down moving mechanism, and the transfer up-and-down moving mechanism 218 for transfer are all connected to the control device. Under the control of the control device, after the packaging bag delivered by the packaging bag conveying mechanism 1 is delivered to the first transfer table on the left, the front-to-back moving mechanism 211 for transfer pushes a layer of packaging bags onto the second transfer table 213. According to the needs of box loading, after the packaging bag conveying mechanism 1 delivers the packaging bag to the first transfer table again, the transfer table up-and-down moving mechanism drives the first transfer table to move upward, and the front-to-back moving mechanism 211 for transfer pushes a layer of packaging bags to the second transfer table 213 again. According to the needs of box loading, the front-to-back moving mechanism 211 for transfer repeatedly pushes out a layer of packaging bags. Figure 5 In the process, pushing two layers of packaging bags is realized, that is, the transfer mechanism 2 pushes out two layers, each layer has 9 packaging bags, that is, 2*9 packaging bags.

[0089] After the front-to-back moving mechanism 211 for transfer pushes at least one layer of packaging bags onto the second transfer platform 213, in order to prevent the packaging bags from falling and ensure the neatness of the packaging bags, before the left-right moving mechanism 215 for transfer pushes out all the packaging bags on the second transfer platform 213, the up-down moving mechanism 218 for transfer drives the flattening plate 217 for transfer to move downward, and flattens all the packaging bags below to ensure the subsequent smooth pushing out. Finally, the left-right moving mechanism 215 for transfer pushes all the packaging bags on the second transfer platform 213 to the transfer conveying mechanism 3 on the left.

[0090] Reference Figure 6, Figure 7 The transfer conveying mechanism 3 includes a transfer conveyor belt, which is arranged on the side of the transfer mechanism 2. A row of transfer partitions 31 are vertically arranged on the transfer conveyor belt along the conveying direction, that is, in the front-to-back direction. The distance between two adjacent transfer partitions 31 is greater than the width of all integrated packaging bags, that is, the overall width of three-pack packaging bags, so as to accommodate the packaging bags delivered by the transfer mechanism 2. A left-right moving mechanism 32 for transfer is arranged on the side of the transfer conveyor belt, and a transfer push plate is arranged on the left-right moving mechanism 32 for transfer. When the transfer conveyor belt stops moving, the transfer push plate is located on the left side between two adjacent transfer partitions 31. The control end of the left-right moving mechanism 32 for transfer is connected to the control device. Under the control of the control device, the transfer push plate pushes all packaging bags between two adjacent transfer partitions 31 into the box body of the outer packaging box of the box delivery mechanism 4 on the right. During the process of the transfer conveyor belt conveying all the packaging bags, a flattening mechanism is also arranged above it, which includes a flattening up and down moving mechanism, a transfer flattening plate arranged on the flattening up and down moving mechanism, and the transfer flattening plate is arranged horizontally above the transfer conveyor belt. The flattening up and down moving mechanism is connected to the control device, and when the transfer conveyor belt stops moving, the transfer flattening plate is located above the two adjacent transfer partitions 31. At this time, under the control of the control device, the transfer flattening plate moves downward to flatten and arrange all the packaging bags between the two adjacent transfer partitions 31.

[0091] Reference Figure 6 , Figure 7 , Figure 8, a manual placing mechanism 7 is also provided on the front left side of the transfer conveyor belt, and the transfer mechanism 2 is located on the rear right side of the manual placing mechanism 7. The manual placing mechanism 7 includes a paper placing mechanism and a paper lowering mechanism located below the paper placing mechanism, and the paper placing mechanism includes a paper placing basket 71 opened up and down, and upper supporting plates are respectively provided on both sides of the bottom of the paper placing basket 71. It also includes an up-down moving mechanism for lowering paper, and the up-down moving mechanism for lowering paper is provided with four vacuum suction cups 72 for lowering paper, and the vacuum suction cups 72 for lowering paper are located below the paper placing basket 71, and the disk surface of each vacuum suction cup 72 for lowering paper faces the upper paper placing basket 71. A lower supporting plate is respectively provided below each upper supporting plate, and when the vacuum suction cups 72 for lowering paper move upward, they pass through the lower supporting plates on both sides. A left-right moving mechanism 73 for placing paper is provided on the left side of the lower supporting plate, and a push paper board is provided at the right end of the left-right moving mechanism 73 for placing paper, and the board surface of the push paper board faces between the two lower supporting plates. The control ends of the paper lowering up and down moving mechanism, each paper lowering vacuum suction cup 72, and the paper placing left and right moving mechanism 73 are all connected to the control device. Under the control of the control device, the paper lowering vacuum suction cup 72 moves upward and sucks the instructions in the paper placing basket 71. Under the downward action of the paper lowering up and down moving mechanism, the upper support plates on both sides can no longer hold the instructions. During the downward movement of the instructions, they fall onto the two lower support plates and are held by the lower support plates on both sides. Under the rightward action of the paper placing left and right moving mechanism 73, the push cardboard pushes the instructions on the right side and pushes them between the two transfer partitions 31. The 3*6 packing bags delivered by the transfer mechanism 2 are located above the instructions.

[0092] The box conveying mechanism 5 includes box conveying tracks 51 on the left and right sides, and a box conveying belt 52 arranged between the two box conveying tracks 51. A row of limit rods 53 are vertically arranged along the conveying direction on each box conveying track 51. The four limit rods 53 on both sides form a group to form a rectangular limit frame on the box conveying belt 52.

[0093] Reference Fig. 9 The box delivery mechanism 4 includes a box placing mechanism and a lower box mechanism located below the box placing mechanism. The box placing mechanism includes a box placing basket 41 opened up and down, and elastic mechanisms are respectively provided at the four corners of the bottom of the box placing basket 41. The lower box mechanism includes four vacuum suction cups 42 located below the box placing basket 41. The vacuum suction cups 42 are located at the front side of the box conveyor belt 52 and between the two box conveying tracks 51. It also includes an up-and-down moving mechanism 43 for the lower box, each vacuum suction cup 42 is arranged on the up-and-down moving mechanism 43 for the lower box, and the disk surface of each vacuum suction cup 42 faces the upper box placing basket 41. The box conveying mechanism 5, the up-and-down moving mechanism 43 for the lower box, and the control end of each vacuum suction cup 42 are all connected to the control device. Under the control of the control device, after the vacuum suction cup 42 moves upward, it sucks the box in the box placing basket 41. Under the downward action of the up-and-down moving mechanism 43 for the lower box, the elastic mechanism releases the box. In the process of the box body moving downward, it falls into the rectangular limit frame of the box conveying mechanism 5.

[0094] A group of box body expansion devices are provided above each box body conveying track 51. The box body expansion devices include an upper and lower support plate arranged along the conveying direction of the box body conveyor belt 52. A bent plate is provided at the end of each support plate, and the upper bent plate end is bent downward. The lower bent plate end is bent upward. And the distance between the upper and lower support plates is not greater than the height of the box body. When the box body conveying track 51 moves forward, it drives the box body in the rectangular limit frame to move forward. During the movement, the upper and lower plastic sheets on both sides of the box body are expanded by the bent plates of the box body expansion device, and are respectively located above the upper support plate and below the lower support plate. Refer to Fig.10 , an auxiliary opening device is also provided on one side of the box conveyor belt 52, and the auxiliary opening device includes two symmetrically arranged auxiliary opening rods 54, one end of each auxiliary opening rod 54 faces the same rectangular limit frame, and the other end of each auxiliary opening rod 54 is connected to an opening rotating mechanism 55. The packaging bag delivered by the transfer conveyor mechanism 3 is delivered to the box body in the rectangular limit frame that the auxiliary opening rod 54 faces. The two opening rotating mechanisms 55 are connected to the control device. When the box conveyor belt 52 stops moving, under the control of the control device, the two rotating mechanisms rotate, driving the auxiliary opening rods 54 thereon to rotate, and the rotation directions of the two auxiliary opening rods 54 are opposite rotations. During the rotation process, the left and right plastic sheets on both sides of the box body in the front rectangular limit frame are opened, and at this time, the packaging bag delivered by the transfer conveyor mechanism 3 is delivered to the box body.

[0095] Two guide rods are also provided above the box conveyor belt 52, and a guide piece is provided at the end of each guide rod. The guide piece is a semicircular arc piece, and the opening of the guide piece faces forward, that is, the attached Figure 1 The guide piece is located between the two sets of bent plates. When the box body in the rectangular limit frame moves forward, the front side of the box body hits the guide pieces on the two guide rods, and at the same time, the inside of the box body is stretched open by the action of the two sets of bent plates.

[0096] Reference Fig.11 The heated box sealing mechanism 6 includes heated box sealing devices arranged on the left and right sides of the box conveyor belt 52, and the heated box sealing devices include a left and right moving mechanism 61 for box sealing, and a box sealing die head 62 arranged on the left and right moving mechanism 61 for box sealing, and each box sealing die head 62 faces the box conveyor belt 52. The left and right moving mechanism 61 for box sealing is connected to the control device. When the folded box body passes through the heated box sealing device, under the action of the control device, the left and right moving mechanism 61 for box sealing drives the box sealing die head 62 to move, and the box sealing die head 62 heat-seals the folded plastic sheet. After the box sealing is completed, the box conveyor belt 52 sends the box body that has been boxed out.

[0097] Reference Fig.12 , Fig.13The box body folding method of the present invention can adopt the following structure: a box sealing vertical plate 81 is further provided on both sides of the box body conveyor belt 52 between the heating box sealing device and the box feeding mechanism 4, the front of the box sealing vertical plate 81 extends to between the box sealing die head 62 and the box body conveyor belt 52, and the rear end of the box sealing vertical plate 81 is tilted outward to form an inclined guide end. The box sealing vertical plate 81 limits the left and right plastic sheets of the box body. When the box body passes through the box sealing vertical plate 81, the front plastic sheet is closed in the box sealing vertical plate 81 under the limitation of the box sealing vertical plate 81. An L-shaped vertical plate 82 is also provided at the rear of the box sealing vertical plate 81. One section of the L-shaped vertical plate 82 is connected to a box sealing rotating mechanism 83. The box sealing rotating mechanism 83 is connected to a control device. Under the action of the control device, the box sealing rotating mechanism 83 is driven to rotate. When the other end face of the L-shaped vertical plate 82 is close to the box sealing vertical plate 81, the plastic sheet passing behind the box sealing vertical plate 81 is clamped into the box sealing vertical plate 81, thereby realizing the folding process of the front and rear plastic sheets of the box body.

[0098] A sealing box guide rod 84 is provided in front of the L-shaped vertical plate 82. The sealing box guide rod 84 is located on the outside of the sealing box vertical plate 81 and between the sealing box die head 62 and the box body conveyor belt 52. The rear end of the sealing box guide rod 84 is tilted upward and faces the rear of the box body conveyor belt 52. A vertical sealing box limiting plate 85 is provided on the outside of the sealing box guide rod 84. The height of the sealing box limiting plate 85 is lower than the height of the sealing box vertical plate 81. One end of the sealing box limiting plate 85 is connected to a triangular panel 86 integrally formed therewith. The triangular panel 86 is located at the tilted position of the sealing box guide rod 84 The plastic sheet 86 of the sealing box limiting plate 85 is clamped outside the sealing box guide rod 84 after being guided downward. At this time, due to the action of the triangular panel 86 of the sealing box limiting plate 85, the lower plastic sheet is guided upward, and the two plastic sheets overlap outside the sealing box vertical plate 81 outside the sealing box guide rod 84, and are confined between the sealing box vertical plate 81 and the sealing box limiting plate 85, thereby realizing the gathering process of the upper and lower plastic sheets of the box body.

[0099] Reference Fig.11 A box sealing compacting device is also provided above both sides of the box conveyor belt 52. The box sealing compacting device is located between two box sealing die heads 62. The box sealing compacting device includes a compacting up and down moving mechanism 63 and a compacting plate 64 located on the compacting up and down moving mechanism 63. The compacting up and down moving mechanism 63 is connected to the control device. When the box sealing die head 62 performs heat sealing on the box body, under the control of the control device, the compacting up and down moving mechanism 63 drives the compacting plate 64 to press the box body on the box conveyor belt 52, and the box sealing die head 62 performs heat sealing on the plastic sheet on the side of the box body.

[0100] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A food packaging system, characterized in that: Includes the following devices: The packaging bag conveying mechanism conveys the food packaging bag covered with a layer of packaging to the transfer mechanism; The transfer mechanism integrates the packaging bags into the set quantity and then sends them to the transfer conveying mechanism; The transfer conveying mechanism sends the integrated packaging bags to the box delivering mechanism; The box delivery mechanism discharges the outer packaging boxes of food and receives several packaging bags delivered by the transfer conveying mechanism; The box conveying mechanism conveys the outer packaging box with the packaging bag inside out of the box conveying mechanism and conveys it to the heating and sealing mechanism, and continues to convey it after the heating and sealing is completed; A heating and sealing mechanism heats and seals the plastic sheets on both sides of the outer packaging box; The control ends of the packaging bag conveying mechanism, the transfer mechanism, the transit conveying mechanism, the box conveying mechanism, the box body conveying mechanism, and the heating and sealing mechanism are respectively connected to the control device, and the operation of each mechanism is driven by the control of the control device; The transfer mechanism includes an automatic material turning mechanism, and the automatic material turning mechanism includes a material turning conveyor belt, the conveying direction of the material turning conveyor belt is the same as the conveying direction of the packaging bag conveying mechanism, and a row of material turning baffles are vertically arranged on the material turning conveyor belt along the conveying direction, and the distance between two adjacent material turning baffles is greater than the thickness of the packaging bag, so as to accommodate the packaging bag delivered by the packaging bag conveying mechanism; When the material turning conveyor belt stops conveying, the plate surface of at least one of the material turning baffles is in a horizontal direction and faces the packaging bag conveying mechanism, and the distance between the material turning baffles and the packaging bag conveying mechanism in the horizontal direction is less than the length of the packaging bag; The transfer mechanism also includes a push mechanism for transferring all packaging bags between the two material turning baffles to the transfer conveying mechanism, and the integrated packaging bags are sent out through the push mechanism; The pushing mechanism comprises a first pushing device arranged above the material turning conveyor belt, and a second pushing device arranged behind the first pushing device, the first pushing device comprises an up-and-down moving mechanism for pushing, a forward-and-backward moving mechanism for pushing arranged on the up-and-down moving mechanism for pushing, and a pushing rod arranged below the forward-and-backward moving mechanism for pushing, the pushing rod pushes all packaging bags between the two material turning partitions out of the material turning conveyor belt and pushes them to the rear; The second material pushing device comprises a receiving platform arranged at the rear of the push rod, a left-right moving mechanism for bag feeding and a first limit plate arranged on the left-right moving mechanism for bag feeding are arranged above the receiving platform, the longitudinal section of the first limit plate is an L-shaped structure, and the angle is facing downward, the first limit plate is arranged above the receiving platform behind the push rod, the left-right moving mechanism for limiting and the up-and-down moving mechanism for limiting arranged on the left-and-right moving mechanism for limiting are fixed on the first limit plate, the up-and-down moving mechanism for limiting is arranged on the second limit plate, and at least one plate surface of the second limit plate is vertically arranged on the side of the first limit plate away from the angle; The control ends of the up-down moving mechanism for pushing materials, the front-back moving mechanism for pushing materials, the left-right moving mechanism for bag feeding, the left-right moving mechanism for limiting, and the up-down moving mechanism for limiting are all connected to the control device; after the packaging bag pushed out by the push rod is pushed to the receiving table, under the control of the control device, the top and one side of the packaging bag are limited by the first limit plate, and the other side is limited by the second limit plate, and under the movement of the left-right moving mechanism for bag feeding, the second pushing device drives the packaging bag to move into the transfer conveying mechanism; The push rod comprises a connecting rod fixed to the forward and backward moving mechanism for pushing materials, and at least two push blocks are arranged on the rear end surface of the lower part of the connecting rod, and the space between two adjacent push blocks is hollowed out to facilitate passing through the material turning baffle. When the material turning conveyor belt stops conveying, the rear of each push block is located between two adjacent material turning baffles. At this time, the push rod pushes out at least two groups of packaging bags behind it at one time under the operation of the first material pushing device; The transfer mechanism comprises a first transfer platform, the first transfer platform is located in front of the packaging bag conveying mechanism in the conveying direction, a front-rear moving mechanism for transfer is provided on one side of the first transfer platform, a second transfer platform is provided on the other side of the first transfer platform, a left-right moving mechanism for transfer is provided on the upper side of the second transfer platform adjacent to the first transfer platform, and the transfer conveying mechanism is provided on the opposite side of the left-right moving mechanism for transfer; The front-to-back moving mechanism for transfer is provided with a first push plate for transfer, and the plate surface of the first push plate for transfer faces the first transfer platform; the left-to-right moving mechanism for transfer is provided with a second push plate for transfer, and the plate surface of the second push plate for transfer faces the second transfer platform; The control ends of the transfer front-back moving mechanism and the transfer left-right moving mechanism are both connected to the control device. Under the control of the control device, when the packaging bags delivered by the packaging bag conveying mechanism are delivered to the first transfer platform in front, the transfer front-back moving mechanism pushes all the packaging bags onto the second transfer platform; the transfer left-right moving mechanism pushes all the packaging bags on the second transfer platform to the transfer conveying mechanism. A transfer table up-and-down moving mechanism is provided at the bottom of the first transfer table, and the transfer table up-and-down moving mechanism is connected to the control device. Under the control of the control device, after the transfer front-and-back moving mechanism pushes all packaging bags onto the second transfer table, according to the box loading requirement, after the packaging bag conveying mechanism delivers the packaging bags to the first transfer table again, the transfer table up-and-down moving mechanism drives the first transfer table to move upward, and the transfer front-and-back moving mechanism pushes a layer of packaging bags onto the second transfer table again; according to the box loading requirement, the transfer front-and-back moving mechanism repeatedly pushes out a layer of packaging bags; A transfer safety plate is provided above the first transfer platform; a transfer safety plate is also provided on one side of the first transfer platform and is located on the opposite side of the packaging bag conveying mechanism; another transfer safety plate is also provided on one side of the second transfer platform and is located on the opposite side of the first transfer platform; A transfer pressing plate is provided above the second transfer platform, the transfer pressing plate is connected to a transfer up-and-down moving mechanism, and a control end of the transfer up-and-down moving mechanism is connected to the control device; Before the transfer left-right moving mechanism pushes out all the packaging bags on the second transfer table, the transfer up-and-down moving mechanism drives the transfer pressing plate to move downward to flatten all the packaging bags below to ensure subsequent smooth pushing out.

2. A food packaging system according to claim 1, characterized in that: The packaging bag conveying mechanism comprises a packaging bag conveying belt and at least two feeding channels arranged on the packaging bag conveying belt, wherein the at least two feeding channels are arranged in the left-right direction, the left outlet of the feeding channel faces the transfer conveying mechanism, and a distribution mechanism is arranged on the right side of the feeding channel; The distribution mechanism comprises a distribution channel arranged on the packaging bag conveyor belt, the distribution channel is arranged left and right and faces one of the feeding channels, and a distribution forward and backward moving mechanism is provided on the distribution channel, and the distribution forward and backward moving mechanism drives the distribution channel to move forward and backward on the packaging bag conveyor belt; The distribution front-to-back moving mechanism is connected to the control device. Through the control of the control device, the distribution front-to-back moving mechanism drives the distribution channel toward one of the feeding channels.

3. A food material packing system according to claim 2, characterized in that: A packaging bag sensor for detecting whether a food packaging bag exists is provided above one of the feeding channels. The packaging bag sensor is also connected to the control device. The packaging bag sensor senses whether a packaging bag exists in the channel. The control device obtains the sensing signal and drives the distribution channel toward a certain feeding channel according to the sensing signal.

4. A food material packing system according to claim 1, characterized in that: The transfer conveying mechanism comprises a transfer conveying belt, which is arranged on the side of the transfer mechanism, and a row of transfer partitions are vertically arranged on the transfer conveying belt along the conveying direction, and the distance between two adjacent transfer partitions is greater than the width of all the integrated packaging bags, so as to accommodate the packaging bags delivered by the transfer mechanism; A left-right moving mechanism for transfer is provided on the side of the transfer conveyor belt, and a transfer push plate is provided on the left-right moving mechanism for transfer. When the transfer conveyor belt stops moving, the transfer push plate is located on the side between two adjacent transfer partitions; The control end of the transfer left-right moving mechanism is connected to the control device. Under the control of the control device, the transfer push plate pushes the packaging bag between two adjacent transfer partitions into the box body of the outer packaging box of the box delivery mechanism.

5. A food material packing system according to claim 4, characterized in that: A flattening mechanism is also provided above the transfer conveyor belt, the flattening mechanism includes a flattening up and down moving mechanism, a transfer flattening plate arranged on the flattening up and down moving mechanism, and the transfer flattening plate is horizontally arranged above the transfer conveyor belt; The flattening up and down moving mechanism is connected to the control device. When the transfer conveyor belt stops moving, the transfer flattening plate is located above the two adjacent transfer partitions. At this time, under the control of the control device, the transfer flattening plate moves downward to flatten and organize the packaging bags between the two adjacent transfer partitions.

6. A food material packing system according to claim 4, characterized in that: The transfer conveyor belt is provided with a manual placing mechanism at the rear side along the conveying direction, and the transfer mechanism is located in front of the manual placing mechanism along the conveying direction; The instruction manual placement mechanism comprises a paper placing mechanism and a paper lowering mechanism located below the paper placing mechanism, wherein the paper placing mechanism comprises a paper placing basket opened up and down, and upper supporting plates are respectively provided on both sides of the bottom of the paper placing basket; It also includes a vertical moving mechanism for lowering paper, wherein the vertical moving mechanism for lowering paper is provided with at least one vacuum suction cup for lowering paper, and the vacuum suction cup for lowering paper is located below the paper placing basket, and the disk surface of each vacuum suction cup for lowering paper faces the paper placing basket above; A lower support plate is provided below each of the upper support plates, and when the lower paper vacuum suction cup moves upward, it passes through the lower support plates on both sides; A left-right moving mechanism for placing paper is provided on the left side of the lower support plate, and a push paper board is provided at the end of the left-right moving mechanism for placing paper, and the board surface of the push paper board faces between the two lower support plates; The control ends of the up-down moving mechanism for lowering paper, each vacuum suction cup for lowering paper, and the left-right moving mechanism for placing paper are all connected to the control device. Under the control of the control device, the vacuum suction cup for lowering paper moves upward and sucks the instructions in the paper placing basket. Under the downward action of the up-down moving mechanism for lowering paper, the upper support plates on both sides cannot continue to hold the instructions. During the downward process of the instructions, they fall onto the two lower support plates and are held by the lower support plates on both sides. Under the rightward action of the left-right moving mechanism for placing paper, the pushing paper board pushes the instructions on the right side between the two transfer partitions. The packaging bag delivered by the transfer mechanism is located above the instructions.

7. A food material packing system according to claim 1, characterized in that: The box conveying mechanism comprises box conveying tracks on both sides, a box conveying belt arranged between the two box conveying tracks, a row of limit rods vertically arranged along the conveying direction on each of the box conveying tracks, and four limit rods on both sides form a group to form a rectangular limit frame on the box conveying belt; The box delivery mechanism includes a box placing mechanism and a box lowering mechanism located below the box placing mechanism. The box placing mechanism includes a box placing basket opened at the top and bottom. The bottom corners of the box placing basket are respectively provided with elastic mechanisms. The box lowering mechanism comprises at least one vacuum suction cup located below the box placing basket, the vacuum suction cup is located behind the box conveying belt in the conveying direction and between the two box conveying tracks; It also includes a lower box up-and-down moving mechanism, each of the vacuum suction cups is arranged on the lower box up-and-down moving mechanism, and the plate surface of each of the vacuum suction cups faces the upper box placing basket; The box conveying mechanism, the lower box up-and-down moving mechanism, and the control end of each vacuum suction cup are all connected to the control device. Under the control of the control device, the vacuum suction cup moves upward to suck the box in the box placing basket. Under the downward action of the lower box up-and-down moving mechanism, the elastic mechanism releases the box, and the box falls into the rectangular limit frame of the box conveying mechanism during the downward process. A set of box body propping devices is provided above each of the box body conveying tracks, and the box body propping devices include an upper and lower support plate arranged along the conveying direction of the box body conveyor belt, and a bent plate is provided at the end of each of the support plates, the upper bent plate end is bent downward; the lower bent plate end is bent upward; and the distance between the upper and lower support plates is not greater than the height of the box body; When the box conveying track moves forward, the box in the rectangular limit frame is driven to move forward. During the movement, the upper and lower plastic sheets on both sides of the box are opened by the bent plates of the box opening device, and are respectively located above the upper support plate and below the lower support plate; An auxiliary opening device is also provided on one side of the box conveyor belt, and the auxiliary opening device includes two symmetrically arranged auxiliary opening rods, one end of each of the auxiliary opening rods faces the same rectangular limit frame, and the other end of each of the auxiliary opening rods is respectively connected to the opening rotating mechanism; The packaging bag delivered by the transfer conveying mechanism is delivered into the box body in the rectangular limit frame toward which the auxiliary propping rod faces; The two rotating mechanisms for opening are connected to the control device. When the box conveyor belt stops moving, under the control of the control device, the two rotating mechanisms rotate, driving the auxiliary opening rods thereon to rotate, and the rotation directions of the two auxiliary opening rods are opposite rotations. During the rotation, the left and right plastic sheets on both sides of the box body in the front rectangular limit frame are opened. At this time, the packaging bag sent out by the transfer conveying mechanism is sent into the box body.

8. A food material packing system according to claim 7, characterized in that: Two guide rods are also arranged above the box conveyor belt, and a guide piece is arranged at the end of each guide rod, and the guide piece is a semicircular arc piece, and the opening of the guide piece faces forward; The guide sheet is located between the two groups of bent plates; When the box body in the rectangular limiting frame moves forward, the front side of the box body hits the guide pieces on the two guide rods, and at the same time, under the action of the two sets of bent plates, the inside of the box body is expanded.

9. A food material packing system according to claim 1, characterized in that: The heating box sealing mechanism comprises heating box sealing devices arranged on both sides of the box conveying belt of the box conveying mechanism, the heating box sealing device comprises a left-right moving mechanism for box sealing, and a box sealing die head arranged on the left-right moving mechanism for box sealing, each of the box sealing die heads faces the box conveying belt; A box sealing vertical plate is also provided on both sides of the box conveyor belt between the heating box sealing device and the box feeding mechanism. The front of the box sealing vertical plate extends to between the box sealing die head and the box conveyor belt. The rear end of the box sealing vertical plate is inclined outward to form an inclined guide end. The box sealing vertical plate limits the left and right plastic sheets of the box body. When the box body passes through the box sealing vertical plate, the front plastic sheet is closed in the box sealing vertical plate under the limitation of the box sealing vertical plate. An L-shaped vertical plate is further provided behind the box sealing vertical plate, one section of the L-shaped vertical plate is connected to the box sealing rotating mechanism, and the box sealing rotating mechanism is connected to a control device. Under the action of the control device, the box sealing rotating mechanism is driven to rotate, and when the end surface of the other section of the L-shaped vertical plate approaches the box sealing vertical plate, the plastic sheet passing behind the box sealing vertical plate is clamped into the box sealing vertical plate, thereby realizing the folding process of the front and rear plastic sheets of the box body; A box sealing guide rod is provided in front of the L-shaped vertical plate, and the box sealing guide rod is located on the outside of the box sealing vertical plate and between the box sealing die head and the box body conveyor belt. The rear end of the box sealing guide rod is tilted upward and faces the rear of the box body conveyor belt. A vertical box sealing limit plate is provided on the outside of the box sealing guide rod. The height of the box sealing limit plate is lower than the height of the box sealing vertical plate. One end of the box sealing limit plate is connected to a triangular panel integrally formed therewith, and the triangular panel is located on the box sealing guide rod. The bottom of the warped part, and one corner faces the rear of the box conveyor belt; when the box passes through the box sealing guide rod, the rear of the box sealing guide rod warps upward, so the plastic sheet above the box body is guided downward and clamped outside the box sealing guide rod; at this time, due to the effect of the triangular panel of the box sealing limit plate, the lower plastic sheet is guided upward, and the two plastic sheets overlap outside the box sealing vertical plate outside the box sealing guide rod, and are confined between the box sealing vertical plate and the box sealing limit plate, thereby realizing the folding process of the upper and lower plastic sheets of the box body; The left-right moving mechanism for sealing the box is connected to the control device. When the gathered box body passes through the heated box sealing device, under the action of the control device, the left-right moving mechanism for sealing the box drives the box sealing die to move, and the box sealing die performs heat-seal on the gathered plastic sheet. After the box sealing is completed, the box body conveyor belt delivers the box body that has been packed.

10. A food material packing system according to claim 9, characterized in that: A box sealing compacting device is also provided above both sides of the box body conveyor belt, the box sealing compacting device is located between the two box sealing die heads, and the box sealing compacting device includes a compacting up and down moving mechanism and a compacting plate located on the compacting up and down moving mechanism; The pressing device is connected to the control device with an up-and-down moving mechanism. When the box sealing die performs heat sealing on the box body, under the control of the control device, the pressing device drives the up-and-down moving mechanism to press the box body on the box conveyor belt, and the box sealing die heats the plastic sheet on the side of the box body to perform box sealing.

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