CN112357449A

CN112357449A - Unfreezing and tray-releasing and automatic bagging device for frozen fish trays

Info

Publication number: CN112357449A
Application number: CN202011382821.8A
Authority: CN
Inventors: 张振杰; 邵俊鹏; 祝建平; 柴瑞
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-02-12

Abstract

The invention belongs to the technical field of aquatic product processing. In order to solve the technical problems in the prior art, the invention aims to provide a frozen fish plate unfreezing tray-releasing and automatic bagging device, which comprises a transportation frame, wherein a transportation belt is arranged on the transportation frame, and the device is characterized in that: a heating device, a hammering device, a tray releasing device and a bag sleeving device are sequentially arranged above the conveying belt from the feeding end to the discharging end of the conveying belt; the heating device can heat the back of the frozen fish plate; the hammering device can hammer the back of the frozen fish plate; the tray separating device can separate the fish trays from the frozen fish blocks in the tray body, and the bagging device can bag the fish blocks after the tray separation. Utilize the device can make the quick dish that takes off of the frozen fish body in the fish plate, the block shape when taking off the dish back fish body and keeping freezing basically can make the frozen fish piece carry out automatic bagging-off again simultaneously, reduces the cost of follow-up further freezing or transportation.

Description

Unfreezing and tray-releasing and automatic bagging device for frozen fish trays

Technical Field

The invention belongs to the technical field of aquatic product processing, and particularly relates to a unfreezing tray-releasing and automatic bagging device for a frozen fish tray.

Background

In the field of marine processing technology, fresh marine products are generally subjected to a freezing process in order to extend the shelf life of the marine products. For example, in the fishing boat for ocean operation, after fishing and loading, the fish is sorted firstly and then is frozen in a tray, and the used freezing tray is mainly a metal tray. When the fish body needs to be processed, the frozen fish plate needs to be unfrozen firstly, so that the fish body is separated from the plate body. The prior thawing measures are generally based on natural thawing or supplemented with running water for thawing, and the time is longer. And sometimes after unloading, only need to carry out separation treatment with freezing fish body and fish dish, retrieve the fish dish fast can, do not require the fish to unfreeze completely, keep the cubic shape when the fish body is frozen, with freezing fish piece quick bagging-off then continue freezing or participate in the transportation, if adopt natural thawing, freezing fish piece basically can thoroughly unfreeze and dissolve, all bring great influence for subsequent bagging-off, further freezing or transportation.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention aims to provide a unfreezing and tray-releasing and automatic bagging device for a frozen fish tray.

In order to achieve the technical purpose, the invention adopts the technical scheme that: the utility model provides a frozen fish plate unfreezes takes off a set and automatic bagging apparatus that overlaps, it is equipped with the transportation area, its characterized in that including transporting the frame on the transportation frame: a heating device, a hammering device, a tray releasing device and a bag sleeving device are sequentially arranged above the conveying belt from the feeding end to the discharging end of the conveying belt; the heating device can heat the back of the frozen fish plate; the hammering device can hammer the back of the frozen fish plate; the tray separating device can separate the fish trays from the frozen fish blocks in the tray body, and the bagging device can bag the fish blocks after the tray separation.

Furthermore, the heating device comprises a heating plate fixed above the conveying belt, heating pipes for radiating heat to the conveying belt are uniformly arranged on the heating plate, and a disc passing channel is formed between the heating plate and the conveying belt.

Further, the heating plate is of an arc-shaped structure, and the heating pipes are arranged on two sides of the arc-shaped heating plate in a centralized mode.

Furthermore, the hammering device comprises a hammer frame fixed above the conveying belt, a hammering cylinder is fixed on the hammer frame, a hammer body is fixed at the end part of a piston rod of the hammering cylinder, and the hammer body can be made to move close to or far away from the conveying belt in a reciprocating mode through the movement of the hammering cylinder.

Furthermore, the hammer frame is arc frame, the hammering cylinder is two, and two hammering cylinders are arranged in the both sides of arc frame, and two hammering cylinder piston rods are directional conveyer belt of relative slant.

Further, the tray separating device comprises a first rotating frame arranged on one side of the conveying belt, the first rotating frame is driven by a first rotating cylinder, an adsorption cylinder is fixed to the top of the first rotating frame, an electromagnetic adsorber is fixed to the bottom end of a piston rod of the adsorption cylinder, and the adsorption cylinder can be driven by the first rotating cylinder to rotate to the upper side of the conveying belt or the side of the conveying belt.

Furthermore, the bagging device is positioned at the tail end rotation position of the conveying belt and comprises a second rotating frame arranged on one side of the conveying belt, the second rotating frame is driven by a second rotating cylinder, a bag suction cylinder is fixed at the top of the second rotating frame, an upper suction rod is fixed at the bottom end of a piston rod of the bag suction cylinder, the bag suction cylinder can drive the upper suction rod to move up and down, an upper vacuum suction nozzle is arranged on the upper suction rod, and the bag suction cylinder can be rotated to the position above the rotation position of the conveying belt or one side of the conveying belt by the driving of the second rotating cylinder; the lower adsorption rod is fixed at the rotating position of the conveyer belt and is provided with a lower vacuum suction nozzle; when the bag suction cylinder rotates to the position above the rotating position of the conveying belt, the nozzle openings of the upper vacuum suction nozzle and the lower vacuum suction nozzle are opposite.

Furthermore, the number of the upper vacuum suction nozzles and the number of the lower vacuum suction nozzles are two, and when the bag suction cylinder rotates to the position above the rotating position of the conveying belt, the nozzle openings of the two upper vacuum suction nozzles correspond to the nozzle openings of the two lower vacuum suction nozzles one to one.

Furthermore, fish plate detection switches are respectively arranged at the positions of the conveyor belts of the heating device, the hammering device, the tray releasing device and the bagging device.

Furthermore, the detection switch comprises a fixed end and an extension end, the extension end is made of elastic IPMC materials, the detection switches are correspondingly mounted on two sides of the same position of the conveyor belt respectively, and the extension end of the detection switch extends towards the center of gravity of the conveyor belt.

The invention has the beneficial effects that: the freezing fish plate that can make the walking on the conveyer belt through design the device realizes freezing fish block and fish plate after heating, hammering and realizes separating, collects the fish plate through the device of taking off the plate is automatic, and the cover bagging apparatus can be automatic with the automatic bagging-off that goes off the plate after freezing fish block, has greatly improved operating efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a portion a of fig. 1.

In the figure, 1, a conveying frame, 2, a conveying belt, 3, a fish plate, 4, a heating plate, 5, a plate passing channel, 6, a hammer frame, 7, a hammering cylinder, 8, a hammer body, 9, a first rotating frame, 10, a first cross rod, 11, a first rotating cylinder, 12, an adsorption cylinder, 13, an electromagnetic absorber, 14, a second rotating frame, 15, a second rotating cylinder, 16, a second cross rod, 17, a bag adsorption cylinder, 18, an upper adsorption rod, 19, an upper vacuum suction nozzle, 20, a lower adsorption rod, 21, a lower vacuum suction nozzle, 22 and a detection switch.

Detailed Description

The invention is described in detail below with reference to the drawings and examples.

Example 1

As shown in the attached figure 1, the device for unfreezing and tray-releasing of the frozen fish tray and automatic bagging of the frozen fish tray comprises a transportation frame 1, wherein an annular transportation belt 2 is arranged on the transportation frame, and after the fish tray 3 is reversely buckled on the transportation belt 2, the transportation belt 2 rotates to drive the fish tray 3 to move forwards.

The feed end by the transport area in the top of transport area 2 is equipped with heating device to the discharge end in proper order, the hammering device, take off a set device and cover bagging apparatus, can slightly unfreeze freezing fish plate through heating device, the separation of unfreezing appears between the freezing fish body that makes in the fish plate and the fish plate, carry out hammering vibrations to the fish plate through the hammering device, make freezing fish body and fish plate thoroughly separate, can form automatic collection to fish plate 3 through taking off a set device, make fish plate 3 take off by the transport belt, can make the freezing fish body after separating with the fish plate realize automatic bagging-off through covering bagging apparatus. The specific structure of each part of the device is described in detail below.

As shown in fig. 1, in this embodiment, the heating device includes a heating plate 4 fixed above the conveyor belt, the heating plate 4 is in a frame structure, the cover is covered above the conveyor belt, heating pipes (not visible in the drawing) for radiating heat to the conveyor belt are uniformly arranged on the bottom surface of the heating plate 4, and a tray passage 5 is formed between the heating plate 4 and the conveyor belt 2.

As shown in the attached figure 1, after the fish plate 3 enters the plate passage 5, the back of the fish plate 3 is radiated by the heat of the heating plate 4, the contact surface between the fish plate 3 and the fish body in the plate is defrosted, the fish plate 3 and the frozen fish body are loosened, and after the fish plate 3 and the frozen fish body leave the plate passage 5, the frozen fish body and the fish plate 3 can be completely separated by only giving a certain impact force to the fish plate 3.

As shown in the attached drawing 1, the hammering device is installed behind the heating device, the hammering device comprises a hammer frame 6 fixed above the conveyer belt, the hammer frame 6 spans the conveyer belt 2, a hammering cylinder 7 is fixed on the hammer frame 6, a hammer body 8 is fixed at the end part of a piston rod of the hammering cylinder 7, and the hammer body 8 can hammer the back of the fish plate 3 through the up-and-down movement of the piston rod of the hammering cylinder.

As shown in fig. 1, after the heated fish plate is hammered by the hammer 8, the fish plate 3 is completely separated from the frozen fish blocks in the fish plate, but at this time, the fish plate 3 is still covered above the frozen fish body and moves forward along with the rotation of the conveyer belt.

As shown in fig. 1, the tray releasing device is disposed behind the hammering device, and includes a first rotating frame 9 disposed on one side of the conveyer belt, the first rotating frame 9 has a first cross bar 10, the bottom end of the first rotating frame 9 is fixed to a first rotating cylinder 11, and the first rotating frame 9 can rotate by driving the first rotating cylinder 11, so that the first cross bar 10 rotates to the upper side of the conveyer belt 2 or to one side of the conveyer belt 2.

As shown in fig. 1, an adsorption cylinder 12 is fixed on a first cross bar 10, a piston rod of the adsorption cylinder 12 is vertically arranged, an electromagnetic absorber 13 is fixed at the bottom end of the piston rod, when the electromagnetic absorber 13 is powered on, magnetism is generated, and when the electromagnetic absorber 13 is powered off, the magnetism disappears.

According to the above description, when the fish plate 3 moves to the plate releasing position, the first rotary cylinder 11 drives the first rotary frame 9 to rotate, the adsorption cylinder 12 rotates right above the conveyor belt, the electromagnetic absorber 13 is powered on to generate magnetism, the piston rod of the adsorption cylinder 12 moves downwards, the electromagnetic absorber 13 absorbs the back surface of the fish plate, the piston rod of the adsorption cylinder 12 moves upwards, the first rotary cylinder 11 drives the first rotary frame 9 to rotate again, the adsorption cylinder 12 rotates to one side of the conveyor belt, the electromagnetic absorber 13 is powered off, the magnetism disappears, and the fish plate 3 falls to one side of the conveyor belt to complete stacking and collection.

When the fish plate is taken down from the conveyer belt 2, the frozen fish blocks left on the conveyer belt continue to move forward along with the conveyer belt, when the frozen fish blocks move to the turning position of the conveyer belt 2, the frozen fish blocks fall off, an automatic bagging device is arranged at the position, and the frozen fish blocks fall off into a bag body to realize automatic bagging.

The structure of the bagging device is shown in fig. 3, and the bagging device comprises a second rotating frame 14 arranged on one side of the conveyer belt, the bottom end of the second rotating frame 14 is connected with a second rotating cylinder 15, the second rotating frame 14 is provided with a second cross rod 16, and the second rotating frame 14 can rotate under the driving of the second rotating cylinder 15, so that the second cross rod 16 is rotated above the rotating position of the conveyer belt 2 or rotated to one side of the conveyer belt 2.

As shown in fig. 3, a bag suction cylinder 17 is fixed on the second cross bar 16, a piston rod of the bag suction cylinder 17 is vertically arranged, an upper suction rod 18 is fixed at the bottom end of the piston rod, the bag suction cylinder 17 can drive the upper suction rod 18 to move up and down, an upper vacuum suction nozzle 19 is arranged on the upper suction rod 18, and a nozzle body of the upper vacuum suction nozzle 19 is arranged downwards.

According to the above description, when the bag bodies are stacked on one side of the conveyor belt, the bag suction cylinder 17 is driven by the second rotary cylinder 15 to rotate to the upper side of the bag bodies, the piston rod of the bag suction cylinder 17 moves downwards to make the mouth bodies of the vacuum suction nozzles 19 on the upper suction rod 18 contact with the bag bodies, the vacuum pumping device is started, the upper vacuum suction nozzles 19 suck the bag bodies, and the second rotary frame 14 is rotated again to rotate the upper suction rod 18 together with the bag bodies to the upper side of the rotation position of the conveyor belt.

When the bags are stacked, the bag sucking position of the upper vacuum suction nozzle 19 is positioned behind the opening of the bag when the bags are sucked.

As shown in fig. 3, the bagging device further comprises a lower suction rod 20 fixed at the turning position of the conveyor belt, wherein a lower vacuum suction nozzle 21 is arranged on the lower suction rod 20, and the mouth of the lower vacuum suction nozzle 21 faces upwards.

As shown in fig. 3, when the bag cylinder 17 is rotated above the rotation of the conveyor belt, the mouths of the upper and lower vacuum suction nozzles are opposite. In this embodiment, the number of the upper and lower vacuum suction nozzles is two, and the nozzles of the two upper vacuum suction nozzles correspond to the nozzles of the two lower vacuum suction nozzles one to one.

According to the attached figure 3, when the upper vacuum suction nozzle 19 sucks the bag body and rotates to be opposite to the lower vacuum suction nozzle 21, the piston rod of the bag suction cylinder 17 moves downwards to enable the other surface of the bag body to be in contact with the lower vacuum suction nozzle 21, the vacuumizing device of the lower vacuum suction nozzle 21 is started, the lower vacuum suction nozzle 21 sucks the other surface of the bag body, the bag suction cylinder is started again to enable the piston rod of the bag suction cylinder 17 to move upwards together with the upper vacuum suction nozzle 19, the bag body on the two surfaces of the opening of the bag body is respectively sucked by the upper vacuum suction nozzle 19 and the lower vacuum suction nozzle 21, the opening of the bag body is pulled open, the frozen fish blocks on the conveying belt fall at the rotating position of the conveying belt 2 and just fall into the opening of the bag body, at the moment, the vacuumizing devices of the upper vacuum suction nozzle and the lower vacuum suction nozzle stop working, and the.

According to the above description, the fish plate detection switches 22 are respectively arranged at the conveyor belt positions of the heating device, the hammering device, the plate releasing device and the bagging device, and the fish plate detection device further comprises a controller, signals output by the fish plate detection switches at different positions are sent to the controller, and the controller controls the corresponding devices to act.

Wherein, in the device, because the working environment has its special characteristics, firstly, is in a high humidity state; and secondly, sundries such as broken ice blocks, fish blocks and the like are inevitably produced on the transportation belt. The detection switch 22 needs to be specially selected, so that the detection switch 22 can adapt to a high-humidity environment and avoid false triggering.

In this embodiment, the detection switch 22 is made of an IPMC material, which is an artificial muscle material, and the IPMC material is very suitable for the development of a bionic robot as a novel actuator because the IPMC material can generate a large displacement deformation due to its low driving voltage. On the other hand, since IPMC can output a voltage when subjected to displacement deformation, IPMC materials can be used as detection switches. Meanwhile, when the IPMC material is used for the sensor, water molecules are required to be continuously absorbed from the environment, so that the working environment of the IPMC sensor needs higher humidity, and the IPMC material is suitable for the working environment of the device.

As shown in fig. 1, in this embodiment, the IPMC material is made into a strip shape, and is mounted on two sides of the conveyor belt at the detection position through a support, the strip IPMC material has certain toughness, the length of the strip IPMC material is designed to be 3-6CM, and the strip IPMC material extends above the belt surface of the conveyor belt, and when the fish plate touches the IPMC material during the movement process, the output voltage of the IPMC material is processed by a subsequent circuit and then transmitted to the controller.

As shown in the attached figure 1, the sensor is additionally arranged on two sides of the conveyor belt and is divided into a fixed end and an extending end, the extending end can extend to be close to the center, and as shown in the attached figure 1, the extending end is made of elastic IPMC. When the conveyor belt moves, the fish plate touches the IPMC, and a sensing signal is generated.

When touching, the fish plate can drive IPMC and bend fast, produces great induced voltage signal in the twinkling of an eye, and then IPMC can keep bending for a period of time, or can warp gradually, and voltage signal can descend slowly this moment, or slowly increase. When leaving, the IPMC will rebound and the signal returns to zero. Different schemes are made according to the signals so as to determine the position of the fish plate.

Filtering (distinguishing impurities or fish plate): the simulation was first performed using a square model, calculating the time for the fish plate to pass the sensor, and measuring the average time as T (inclined or straight, the two time differences are not too large). And then setting a detection switch signal analysis program, starting timing when a signal appears, assuming that the signal rebounds in a short time, namely the signal is the impurity, and if the signal can be kept for a period of time (which can be set to be 0.1-0.2T, the difference between the volume of the fish plate and the volume of the impurity is large, and the signal time is very short), namely the fish plate.

The fish plate is placed in a horizontal manner, namely the edge of the fish plate is parallel to the conveyor belt; and secondly, the edge of the fish plate is inclined, namely the fish plate is obliquely placed. So two cases are discussed:

1. laying: when the fish plate is horizontally placed, the two IPMCs touch the fish plate, signals can simultaneously appear on the two IPMCs and slowly attenuate, when the signals keep 0.3T, the fish plate is judged and output to work next step, and then the processor controls the next step after a period of time T.

2. Obliquely placing: when tilting, the IPMC signal on one side is instantly increasing and then gradually decreasing (the touch will bend first, then relax, and finally rebound), and the IPMC signal on the other side slowly increases and then decays after a while. At the moment, a signal appears on the first side, then a signal appears on the other side within 0.2T, then the signals on the two sides keep 0.3T simultaneously, and another signal is output and controls the next step to work after T-0.2T.

The 0.2T is assumed to distinguish whether the fish plate is a foreign object, and since the foreign object is much smaller than the fish plate, the touch is not so long, the signal holding time is short, and a margin value may be assumed according to actual conditions. And at the same time, the fish plate is judged to be fish plate after a period of time.

Example 2

In the present embodiment, further improvements are made to the heating device and the hammering device.

In actual operation, often need fish dish and freezing fish piece after separation, freezing fish piece can keep intact to make things convenient for subsequent bagging-off and minimize subsequent freezing time. The configuration of example 1 provided in fig. 1 shows that the back of the fish plate is uniformly heated as the fish plate passes through the heating device, which easily causes the frozen fish pieces in the fish plate to over-thaw. And embodiment 1 provides a hammering device, its hammer block 8 is perpendicular to carry out the hammering to the back of fish plate, under the prerequisite that frozen fish piece was passed and is unfrozen, the perpendicular hammering of hammer block 8 caused the breakage of the frozen fish piece in the fish plate very easily, caused certain obstacle for subsequent bagging-off processing, increased the subsequent freezing cost of fish body simultaneously again.

In order to solve the technical problem of embodiment 1, as shown in fig. 2, in this embodiment, the heating plate 4 of the heating device is made into an arc-shaped structure, and the heating pipes on the heating plate 4 are centrally arranged on both sides of the arc-shaped heating plate.

As shown in fig. 2, in this embodiment, the hammer frame 6 is also configured as an arc frame structure, the number of the hammering cylinders 7 is two, the two hammering cylinders 7 are arranged on two sides of the arc frame, and piston rods of the two hammering cylinders are relatively inclined to the conveying belt.

After the fish plate 3 is combined with the fish body in the plate body in a freezing way, when the frozen fish blocks are separated from the fish plate, the edge of the fish plate 3 is unfrozen and separated from the frozen fish blocks, and then the frozen fish blocks can be shaken out from the fish plate without large shake, so that the separation of the fish plate 3 and the frozen fish blocks can be ensured, and meanwhile, the completeness of the shape of the frozen fish blocks can be kept to the maximum extent. Giving above-mentioned analysis, in this embodiment, making heating plate 4 into arc structure, when fish plate 3 crossed a set passageway 5 through the heating plate 4 lower part, because the heating pipe on the heating plate 4 concentrates the both sides that set up at the arc heating plate, 3 both sides of fish plate receive great heat radiation this moment, and the heat radiation that the fish plate 3 back received obviously reduces, and the frozen fish piece of fish plate inner edge department preferentially receives the thawing, and the separation of thawing in advance is frozen fish piece and fish plate 3's edge. When through the hammering device, because hammer carrier 6 also sets up to arc frame structure, the edge at the two 7 piston rod slant hammers of hammering cylinder to the 3 backs of fish plate, receive hammering vibrations back when fish plate 3 receives, the frozen fish block in the fish plate is shaken and falls, because frozen fish block edge degree of thawing is far greater than other positions of frozen fish block, consequently the shape when frozen is basically kept to frozen fish block, the fish block is difficult to take place the breakage, the fish plate is taken off the back on by the conveyer belt, the fish block keeps complete shape to get into and overlaps and bagging-off. Therefore, the success rate of bagging is improved, and meanwhile, the cost of continuous freezing in the later period is also reduced.

Claims

1. The utility model provides a frozen fish plate unfreezes takes off a set and automatic bagging apparatus that overlaps, it is equipped with the transportation area, its characterized in that including transporting the frame on the transportation frame: a heating device, a hammering device, a tray releasing device and a bag sleeving device are sequentially arranged above the conveying belt from the feeding end to the discharging end of the conveying belt; the heating device can heat the back of the frozen fish plate; the hammering device can hammer the back of the frozen fish plate; the tray separating device can separate the fish trays from the frozen fish blocks in the tray body, and the bagging device can bag the fish blocks after the tray separation.

2. The device for unfreezing, tray-releasing and automatic bagging of the frozen fish tray as claimed in claim 1, wherein: the heating device comprises a heating plate fixed above the conveying belt, heating pipes for radiating heat to the conveying belt are uniformly arranged on the heating plate, and a disc passing channel is formed between the heating plate and the conveying belt.

3. The device for unfreezing, disfrizing and automatically bagging the frozen fish plate as claimed in claim 2, wherein: the heating plate is of an arc-shaped structure, and the heating pipes are arranged on two sides of the arc-shaped heating plate in a centralized mode.

4. The device for unfreezing, tray-releasing and automatic bagging of the frozen fish tray as claimed in claim 1, wherein: the hammering device comprises a hammer frame fixed above the conveying belt, a hammering cylinder is fixed on the hammer frame, a hammer body is fixed at the end part of a piston rod of the hammering cylinder, and the hammer body can be made to be close to or far away from the conveying belt in a reciprocating mode through the movement of the hammering cylinder.

5. The device for unfreezing, tray-releasing and automatic bagging of the frozen fish tray as claimed in claim 4, wherein: the hammer frame is the arc frame, the hammering cylinder is two, and two hammering cylinders are arranged in the both sides of arc frame, and two hammering cylinder piston rods are directional conveyer belt of relative slant.

6. The device for unfreezing, tray-releasing and automatic bagging of the frozen fish tray as claimed in claim 1, wherein: the tray separating device comprises a first rotating frame arranged on one side of the conveying belt, the first rotating frame is driven by a first rotating cylinder, an adsorption cylinder is fixed at the top of the first rotating frame, an electromagnetic adsorber is fixed at the bottom end of a piston rod of the adsorption cylinder, and the adsorption cylinder can be driven by the first rotating cylinder to rotate to the upper side of the conveying belt or the side of the conveying belt.

7. The device for unfreezing, tray-releasing and automatic bagging of the frozen fish tray as claimed in claim 1, wherein: the bagging device is positioned at the tail end turning position of the conveying belt and comprises a second rotating frame arranged on one side of the conveying belt, the second rotating frame is driven by a second rotating cylinder, a bag suction cylinder is fixed at the top of the second rotating frame, an upper adsorption rod is fixed at the bottom end of a piston rod of the bag suction cylinder, the bag suction cylinder can drive the upper adsorption rod to move up and down, an upper vacuum suction nozzle is arranged on the upper adsorption rod, and the bag suction cylinder can be rotated to the position above the turning position of the conveying belt or one side of the conveying belt through the driving of the second rotating cylinder; the lower adsorption rod is fixed at the rotating position of the conveyer belt and is provided with a lower vacuum suction nozzle; when the bag suction cylinder rotates to the position above the rotating position of the conveying belt, the nozzle openings of the upper vacuum suction nozzle and the lower vacuum suction nozzle are opposite.

8. The device for unfreezing, disfrizing and automatically bagging the frozen fish plate as claimed in claim 7, wherein: the number of the upper vacuum suction nozzles and the number of the lower vacuum suction nozzles are two respectively, and when the bag suction cylinder rotates to the position above the rotating position of the conveyor belt, the nozzle openings of the two upper vacuum suction nozzles correspond to the nozzle openings of the two lower vacuum suction nozzles one to one.

9. The device for unfreezing, tray-releasing and automatic bagging of the frozen fish tray as claimed in claim 1, wherein: and fish plate detection switches are respectively arranged at the positions of the conveyor belts of the heating device, the hammering device, the tray releasing device and the bagging device.

10. The device for unfreezing, disfrizing and automatically bagging the frozen fish plate as claimed in claim 9, wherein: the detection switch comprises a fixed end and a stretching end, the stretching end is made of elastic IPMC materials, the detection switches are correspondingly mounted on two sides of the same position of the conveyor belt respectively, and the stretching end of the detection switch stretches out towards the center of gravity of the conveyor belt.