JPH0465307B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is capable of automatically carrying out cargo handling operations such as carrying frozen items into an ultra-low-temperature freezer for vessels such as fishing boats, and carrying them out from the freezer. The present invention relates to a cargo handling device for frozen products that does not require input operations at ultra-low temperatures.

(Prior art) Contact freezers, which have a large freezing capacity per unit floor area, are generally used in freezers for vessels such as fishing boats. A replacement plate) is placed, the frozen item is inserted between the flat tanks, and the frozen item is pressed between the flat tanks using hydraulic pressure, etc., and the frozen item is transported between the flat tanks or from between the flat tanks. Cargo handling such as transporting frozen items is carried out using the so-called batch method, which is difficult to handle automatically, and the loading and unloading of frozen items from transport equipment such as belt conveyors to between flat tanks and transport from between flat tanks to the transport equipment must be carried out manually. was going there.

(Problems to be Solved by the Invention) Cargo handling, such as manually transporting frozen products from conveying equipment such as a belt conveyor to between flat tanks, and transporting frozen goods from between flat tanks to the conveying equipment, such as stuffing frozen goods into frozen bread, etc. The weight of the fish is 10 to 19 kgf, and they are forced to do hard labor in unstable positions (bending forward, stretching, etc.) in extremely low temperatures. It seems that there is nothing that can be done to deal with the heavy labor caused by the change. Therefore, in order to mechanize and automate this type of work, the present applicant and others have previously completed inventions such as Japanese Patent Application No. 1984-40849 regarding horizontal multi-stage flat tanks, but none of them are for loading and unloading frozen bread. be.

However, packaging materials have diversified in recent years, and so-called panless packaging has been adopted, such as paper bagging for minced fish and bags made of synthetic resin laminated film with gas barrier properties such as aluminum foil laminated on the surface of polyethylene. Therefore, products to be frozen packed in paper bags or bags made of laminate film, etc., differ from frozen bread, and have the disadvantage that they cannot be handled as they are by the apparatus according to the invention of the applicant of the present application.

The present invention maintains the advantage of conventional contact freezers in that they have a large freezing capacity per unit floor area, and even if the container containing the frozen product is frozen bread or panless packaging such as a paper bag, the mechanical , Freezer for ships that can automatically load and unload containers such as fishing boats and other vessels without fear of containers containing heavy frozen items popping out or falling, saving space. The purpose of this invention is to provide a device for handling frozen items in a warehouse.

(Means for Solving the Problems) In the present invention, two contact heat exchange plates are installed in a ship freezer in multiple stages and in multiple rows as a pair, movable up and down, respectively, and each pair of contact heat exchange plates is movable up and down. A pair of endless roller chains are installed on both sides of the plate, attachments with blades perpendicular to the link plates are attached to the inner ends of each opposing link plate of the roller chain, and a support plate is installed between the attachments. The pair of fixed endless roller chains are used as slat conveyors that run between each pair of contact heat exchange plates, and the roller chains are fixed at intervals slightly wider than the width of containers such as frozen bread or paper bags containing the products to be frozen. Attachments similar to those described above are attached to the outer ends of the opposing link plates, and between the attachments, a pusher of a container such as frozen bread or a paper bag is projected and fixed onto the conveying surface of the slat conveyor, and the This is a slat conveyor that is rotated by a screwdriver.

(Function) Containers such as frozen bread or paper bags containing frozen products that are conveyed to the freezer are conveyed to the slat conveyor in a specified row by computer control, etc. The container is raised to the slat conveyor, the slat conveyor of the row is rotated by a driver, and the containers that have arrived at the carry-in end of the slat conveyor are carried between the pushers for frozen products on the slat conveyor, and the containers are transported to each stage of the row. Once the containers have been loaded onto the slat conveyor, a pair of contact heat exchange plates on each stage facing each other are moved up and down to transfer the heat to the containers on the slat conveyor. The containers are pressed into contact between exchange plates and frozen for a certain period of time, and the containers are sequentially carried onto each row of slat conveyors and similarly frozen. Next, when freezing has been completed in all rows and stages, the containers on the slat conveyor are rotated by a driver to rotate the slat conveyor in the designated stage of the designated row by computer control etc. It is carried out by a pusher, lowered, and carried out from the freezer, and the same operation is repeated for each row and each stage of the slat conveyor to complete the carrying out.

(Example) The accompanying drawings showing an example of carrying out the present invention will now be described in detail. Reference numerals 1 and 2 denote a pair of contact heat exchange plates disposed above and below, for example, a heat insulating wall 3a.
This system is installed in four stages at appropriate intervals in the vertical direction in the freezer 3 for vessels such as fishing boats, which is divided by 10 columns).
Reference numeral 4 denotes a reinforcing girder attached to the upper surface of each upper contact type heat exchange plate 1. Support arms 5, 5 are protruded from both sides of each girder 4 to support the heat exchange plate 1 above the four stages of each row. The arms 5, 5 are connected together, and each upper heat exchange plate 1 is movable in the vertical direction by raising and lowering the support arms 5, 5 using a hydraulic cylinder (not shown), etc. A similar reinforcing girder is attached to the lower surface of the contact type heat exchange plate 2 below the four stages, and each lower heat exchange plate 2 is movable in the vertical direction using a hydraulic cylinder or the like (both not shown) in the same manner as above. It is something. 6,6,6
Sprockets a and 6a are rotatably supported by bearings 7, 7 attached to both front and rear sides of a pair of contact heat exchange plates 1, 2 in each row and stage, respectively. These are fixed to both ends of shafts 8 and 9, respectively. Reference numerals 10 and 10 denote a pair of endless roller chains, and the sprockets 6, 6a, 6, 6a are fixed to the front and rear sides of both sides of the heat exchange plates 1 and 2.
The roller chain 10,
As shown in FIG.
An attachment is provided with blades 12, 12 facing inward in a direction perpendicular to the mutually facing surfaces of 11,
The slat conveyor 15 is constructed by fixing a support plate 13 made of a thin plate with a width slightly narrower than the pitch P of the roller chains 10, 10 between each of the opposing blades 12, 12 with screws 14, 14. Upper and lower heat exchange plates 1, 2 and slat conveyor 15
A contact conveyor freezer 16 is a combination of the above. Reference numeral 17 denotes a pusher for a container 18 such as frozen bread or a paper bag for storing products to be frozen, and the outer ends of endless roller chains 10, 10 of opposing link plates 11, 11 are spaced at intervals slightly wider than the width of the container 18. Blades 19, 19 similar to those described above are attached to the blades 19, 19, and screws 20, 20 are installed and fixed between the blades 19, 19 to protrude upward from the conveying surface of the slat conveyor 15. As the container rotates, the container 18 placed on the slat conveyor 15 is pushed and conveyed. 21, 21 are guide rails installed on the lower surface of the transmission side and the return side of each roller chain 10, and the rollers 22, 2 of each chain 10
2 from below, supports the load applied to each roller chain 10, and prevents each roller chain 10 from sagging. A sprocket 23 is fixed to one end extension 8a of one shaft 8 to which the pair of sprockets 6, 6 are fixed. 24 is a geared motor as a driver, which drives the slat conveyor 15 at each stage of each row.
An endless drive chain 26 is installed between the sprocket 25 fixed to the rotating shaft of the motor 24 and the sprocket 23 to drive each sprocket 23. A pair of sprockets 6,6
is the drive sprocket, and the slat conveyor 15
It rotates. In addition, the other pair of sprockets 6a, 6a are used as driven sprockets, and a take-up mechanism 35 is attached to the sprockets 6a, 6a.
is attached to adjust the tension of the slat conveyor 15. Reference numerals 27 and 28 are refrigerant hoses that circulate a refrigerant such as R22 to the upper and lower contact heat exchange plates 1 and 2, respectively. 29 is the loading conveyor,
Reference numeral 30 denotes a carry-out conveyor, which is installed perpendicularly to the carry-in and carry-out ends of the slat conveyors 15 in each row, and connects the freezer 3 and the processing factory through an inlet 29a and an outlet 30a bored in the heat-insulating wall 3a. etc., and connects them. 31, 31 are bridges or lifters, which respectively connect the slat conveyor 15 of each row.
It is installed between the carry-in end and carry-out end of the carry-in conveyor 29 and carry-out conveyor 30, and is capable of going up and down from the carry-in conveyor 29 and carry-out conveyor 30 to the slat conveyor 15 of each stage of each row. 29 and the carry-out conveyor 30 are connected to the slat conveyors 15 of each stage of each row. Reference numeral 32 denotes a stopper and pusher, which is installed at the inlet end of each row of slat conveyors 15 on the inlet conveyor 29. In this embodiment, the stopper and pusher 32 is installed at the inlet end of each row of slat conveyors 15 on the inlet conveyor 29. 2 are stopped in series at appropriate intervals, and each is pushed onto the bridge or lifter 31 on the carry-in end side. Further, the stopper and pusher 32 pushes the container 18 onto the bridge or lifter 31 once the container 18 has been pushed out.
8 is released, and the container 18 conveyed by the carry-in conveyor 29 is conveyed to the next designated stopper/pusher 32. 33
is a bypass conveyor, which connects the terminal end of the carry-in conveyor 29 and the start end of the carry-out conveyor 30,
Containers 18 that are not stopped by the stopper and pusher 32a at the end of the carry-in conveyor 29, or various defective containers that are not suitable for freezing, are placed at the entrance 29a.
Detected by a sensor (not shown) attached to the
It is conveyed to a carry-out conveyor 30 and returned to a processing factory or the like by the carry-out conveyor 30. In order to carry the containers 18 to the slat conveyor 15 of each stage of the pre-designated row, the geared motor 24 of the stage is operated by selecting the stage to be carried in by the bridge or lifter 31 at the carry-in end. When the pusher 31 reaches the corresponding stage, the slat conveyor 1
5 is rotated by the width of the container 18, and the containers 18 on the bridge or lifter 31 are carried in two at a time. Furthermore, the containers 18 are carried out from the slat conveyor 15 at each stage in a pre-specified row.
By selecting the stage to be discharged by raising the bridge or lifter 31 at the discharge end, the slat conveyor 15 is similarly rotated by the width of the container 18, and the container is placed between the front and rear pushers 17, 17 on the slat conveyor 15. The container 18 is pushed onto the bridge or lifter 31 by the rear pusher 17,
This is done by lowering the bridge or lifter 31 to the carry-out conveyor 30 and carrying out the container 18 onto the carry-out conveyor 30. Starting and stopping of the carrying-in conveyor 29 and carrying-out conveyor 30 as described above, stopping the containers 18 by the stopper/pusher 32 and releasing the stop to select the row of the slat conveyor 15 to be carried in, and raising the bridge or lifter 31 to select the row of the slat conveyor 15; Selection of the slat conveyor 15 in each stage, rotation of each slat conveyor 15, vertical movement of the contact heat exchange plates 1 and 2 in each row and stage, and constant positioning of the container 18 by each heat exchange plate 1 and 2. time (2~4
freezing for a certain period of time, selection of a row to be carried out by operating the discharge end bridge or lifter 31, vertical movement of the contact heat exchange plates 1 and 2 of the row in the opposite direction, and the bridge or lifter 3
A computer or a sequencer controls a series of controls such as selection of the slat conveyors 15 in each stage of the row by raising the slat conveyor 1 and rotation of each slat conveyor 15. 34, 34 are insulation materials,
These are attached to the opposing surfaces of the flat tanks 1 and 2, respectively, to prevent heat from penetrating from surfaces that are not directly involved in freezing. Furthermore, the present invention provides a sensor (not shown) for color identification on the carry-in conveyor 29, and if the containers 18 are color-identified in advance by fish type, size, or grade, the contact conveyor freezer 16 can be placed by a computer or the like. The device can also be configured to select each column and stage, facilitating various sorting management. Furthermore, in this embodiment, since a four-stage row of slat conveyors 15 (contact conveyor freezer 16) is installed, the effective number of stages of contact type heat exchange plates 1 and 2 of the contact conveyor freezer 16 is four stages. , is smaller than the effective number of stages of conventional contact freezers, but since loading and unloading can be done mechanically and automatically, loading and unloading does not take much time, and the freezing efficiency of the contact freezing device itself (contact type heat exchange plates 1 and 2) The amount of freezing processing per unit floor area is comparable to that of conventional contact freezers.

(Effects of the Invention) As described above, the present invention provides an interval between the contact heat exchange plates 1 and 2 facing each other in the marine freezer 3, which is slightly wider than the container 18 containing the frozen products on the conveyance surface. Since the slat conveyor 15 with the frozen product pusher 17 protruding is interposed, the container 18 can be directly mechanically and automatically unloaded, and the unloading can be completed in a short time without using any input, thus saving labor. It is convenient for countermeasures against stress and heavy labor. Furthermore, since the slat conveyor 15 is used as a transport device used for cargo handling, the container 18 for storing the frozen product may be either frozen bread or a paper bag, which may become unusable due to the product form due to packaging materials, etc. Never.

Further, the container 18 filled with the frozen product is transported by a slat conveyor 15 between a pair of contact type heat exchange plates 1 and 2 that can be moved up and down independently during transportation.
and front and rear pushers 17, 1 attached to ring plates 11, 11 and link plates 11, 11.
7, the space between the pair of heat exchange plates 1 and 2 is expanded, and the slat conveyor 15 is driven to move toward the discharge end, so that the container 18 exchanges heat due to the shaking or tilting of the ship. The plates do not jump out or fall from the plates 1 and 2, making work safer.

Furthermore, in the present invention, since a conveying device is provided between each contact type heat exchange plate 1 and 2, there is no need to provide a fairly large cargo handling space equipped with a conveying device in front of the contact freezer as in the conventional case.
The device itself can save space, making it suitable for use on ships with limited installation space.

Furthermore, the contact conveyor freezer 1 of the present invention
The effective number of stages of the contact type heat exchange plates 1 and 2 in No. 6 is:
The floor and ceiling of Freezer 3 limit the vertical movement, which is considerably less than the effective number of stages of conventional contact freezers, but as mentioned above, cargo handling does not take much time, and the contact freezing time increases accordingly. Therefore, the amount of freezing processing per unit floor area becomes comparable to that of conventional contact freezers.

[Brief explanation of the drawing]

The attached drawings show an example of the implementation of the present invention, and FIG. 1 is a plan view showing the arrangement of a contact conveyor freezer with a cross section taken through a heat shield wall, FIG. 2 is a schematic plan view of the contact conveyor freezer, and FIG. 2 is a schematic enlarged right side view, FIG. 4 is a rear view of the same, FIG. 5 is a vertical cross-sectional view of a main part of the slat conveyor, and FIG. 6 is a side view of the same. 1, 2...Contact heat exchange plate, 3...Freezer, 3a...Heat insulation wall, 4...Reinforcement girder, 5...
...Support arm, 6, 6a... Sprocket, 7... Bearing, 8... Shaft, 8a... Tip extension, 9... Shaft,
10...Roller chain, 11...Link plate, 12...Blade, 13...Support plate, 14...
Screw, 15... Slut conveyor, 16... Contact conveyor freezer, 17... Pusher, 18... Container, 19... Vane, 20... Screw, 21... Guide rail, 22... Roller,
23... Sprocket, 24... Geared motor, 25... Sprocket, 26... Drive chain, 27, 28... Refrigerant hose, 29... Carrying in conveyor, 29a... Inlet, 30... Carrying out conveyor, 30a... Outlet, 31...bridge or lifter, 32, 32a...stopper and pusher, 33...bypass conveyor, 34...insulating material, 35...take-up mechanism.

Claims (1)

[Claims] 1 A pair of upper and lower contact heat exchange plates is installed in a marine freezer in multiple stages and rows, and the pair of plates is movable in the vertical direction, and a pair of contact heat exchange plates are installed on both sides of each pair of heat exchange plates. An endless roller chain is constructed and installed, and the roller chain is used as a slat conveyor that runs between each pair of heat exchange plates, and the conveyor surface between the heat exchange plates is provided with an interval slightly wider than the width of the frozen product. A frozen goods handling device for a ship's freezer, characterized in that a slat conveyor for transporting frozen goods with a protruding pusher for frozen goods is rotatably installed.