JPS6183853A - Method and device for cargo-handling article to be refrigerated of refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention can automatically carry out cargo handling operations such as carrying frozen items into and carrying out frozen products into an ultra-low-temperature freezer on a fishing boat, etc. The present invention relates to a method for handling frozen items that does not require manual handling operations at ultra-low temperatures, and an apparatus therefor.

(Prior art) Contact 1-Freezer, which has a large freezing capacity per unit floor area, is generally used in the freezers of fishing boats, etc.
In this contact freezer, flat tanks are arranged in horizontal multi-stage or vertical multi-section, the products to be frozen are inserted between the flat tanks, and the products to be frozen are pressed between the flat tanks using hydraulic pressure. Carrying frozen items between tanks or removing frozen items from between flat tanks is the so-called hatch method, which is difficult to carry out automatically, and must be carried manually from transport equipment such as belt conveyors to between flat tanks. It is used to carry in products and take them out from between flat tanks to the transfer equipment, and the weight of frozen products such as frozen bread stuffing is 10 to 19 kgf, and it is difficult to maintain an unstable posture (bending forward, stretching one's back) under extremely low temperatures. (etc.), and there is nothing that can be done to reduce labor costs due to the recent rise in labor costs, or to reduce the burden of heavy labor due to the aging of fishing boat crews.

Therefore, in order to mechanize and automate this type of work, the applicant and others previously filed a patent application in 1973 regarding a horizontal multi-stage flat tank.
No. 9-40849 and other inventions were completed, all of which are for handling frozen bread. However, packaging materials have diversified in recent years, and so-called panless packaging has been adopted, such as paper bags for minced fish, and bags made of synthetic resin laminated film with a polyethylene surface laminated with aluminum whistles that have gas barrier properties. Therefore, unlike frozen bread, the products to be frozen packed in paper bags or laminated film bags have the disadvantage that they cannot be handled as they are by the method and device according to the invention of the applicant.

(Problems to be Solved by the Invention) While maintaining the advantage of conventional contact freezers, which have a large freezing capacity per unit floor area, the container for storing the frozen products can be frozen bread or panless packaging such as paper bags. The aim is to make cargo handling possible mechanically and automatically.

(Means for Solving the Problems) In the present invention, two contact heat exchange plates are installed in a freezer in multiple stages and in multiple rows as a pair, movable up and down, respectively, and each pair of heat exchange plates is a pair of endless roller chains are installed on both sides of the roller chain, and a butaniumment with wings perpendicular to the link plates is attached to the inner ends of each opposing link plate of the roller chain,
A support plate is installed and fixed between the attachments, and the pair of endless roller chains is used as a slat conveyor that runs between each pair of contact type heat exchange plates, and the width of the container, such as frozen bread or paper bag, containing the product to be frozen is Attachments similar to those described above are attached to the outer ends of opposing link plates at slightly wider intervals, and pushers for containers such as frozen bread or paper bags are installed and fixed between the attachments, and the slat conveyor in each row of each stage is The slat conveyor is rotated by a screwdriver, and the slat conveyor is placed at the loading/unloading end of each row of slat conveyors, and the loading conveyor and unloading conveyor, as well as the slat conveyor of each stage.

A stopper and pusher is provided on the carry-in conveyor to stop the containers conveyed by the carry-in conveyor and push the containers onto the bridge or lifter at the carry-in end of each row of slat conveyors. It is equipped.

(Function) Containers such as frozen bread or paper bags containing items to be frozen that are transported by the carry-in conveyor are transported to the slat conveyor in a specified row by computer control, etc.
An appropriate number of containers are stopped by a stopper and pusher on the carry-in conveyor at the carry-in end of the slat conveyor, pushed out onto a bridge or lifter, and the bridge or lifter is similarly raised to the slat conveyor of the designated stage. Rotate the slat conveyor with a driver,...1
Transfer the containers from the raised bridge or lifter onto the slat conveyor, and repeat this operation in order to place the containers on the slat conveyor of each stage of the row (when the maximum is completed, the containers are transferred to the top and bottom of the slat conveyor). A pair of upper and lower contact type heat exchange plates in each row facing each other is operated up and down to press the containers on the slat conveyor between the heat exchange plates and freeze them for a certain period of time, and then the containers are sequentially transferred onto the slat conveyor in each row. When the bridge or lifter is raised, the stopper and pusher is released, and the container is transported by the conveyor to the next row designated by computer control, etc.
It is transported to a 7-bar/pusher, and the same operations as described above are repeated. Next, when all rows and stages have been frozen, the bridge or lifter at the discharge end of the designated row is raised to the slat conveyor of the designated stage by computer control, etc., and the slat conveyor is rotated by a driver. By moving the containers, the appropriate number of containers are carried out onto a bridge or lifter, the bridge or lifter is lowered, the containers are transferred onto a carry-out conveyor, and the containers are carried out from the freezer. The same operation is repeated on the slat conveyor of each stage to complete the conveyance.

(Example) The accompanying drawings showing an example of carrying out the present invention will now be described in detail. 1.2 is a pair of contact type heat exchange plates arranged above and below, for example, a freezer 3 partitioned by a heat insulating wall 3a.
The system is installed in four stages with appropriate intervals in the vertical direction, and with these four stages as one row, multiple rows (
In this embodiment, 10 rows) are provided.

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, and the heat exchange plate 1 above the four stages of each row The support 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) or the like. 4 in each row
A similar reinforcing girder is attached to the lower surface of the contact type heat exchange plate 2 below the stage, and each lower heat exchange plate 2 is movable in the vertical direction using a hydraulic cylinder or the like (both not shown) as described above. It is. 6, 6.6a, 6. A is a sprocket, and bearings 7, 7 are attached to both sides of the front and rear of the pair of contact type heat exchange plates 1, 2 in each row and each stage, and the cough bearings 7,
It is fixed to both ends of shafts 8 and 9, which are rotatably supported by a shaft 7. Reference numeral 10.10 denotes a pair of endless roller chains, which are installed between the sprockets 6.6a, 6.6a fixed at the front and back on both sides of the heat exchanger plate 12. As shown in FIG. 5, the link plate 11.11 is an axotiment with blades 12°12 provided at its inner end in a direction perpendicular to the surfaces of the link plate 11°1, which face each other, and each opposing blade 12.'t'rV whose width is slightly narrower than the pitch P of the roller chain 10°IO between 12.
A slat conveyor 15 is obtained by constructing and fixing a support plate 13 made of a plate with heat exchangers 14 and 14, and a contact conveyor freezer 16 is formed by combining the upper and lower heat exchange plates 1 and 2 with the slat conveyor 15. It is something. Reference numeral 17 denotes a pusher for a container 18, such as frozen bread or a paper bag, which accommodates items to be frozen, and blades 19 similar to those described above are attached to the outer ends of opposing link plates 11 and 11 at intervals slightly wider than the width of the container 18. .19 is attached, and the blade 19.
The slat conveyor 1 is installed and fixed between the slat conveyors 19 and 19 with screws 20.20, and as the slat conveyor 15 rotates.
The container 18 placed on the container 5 is pushed and conveyed. 21゜21 is a guide rail installed on the lower surface of the transmission side and return side of each roller chain IO.
The rollers 22 and 22 are guided from below, supporting the load applied to each roller chain 10, and preventing 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 is fixed.

Reference numeral 24 denotes a Gyat motor as a driver, which is installed on the side of the tip extension part 8a of the shaft 8 of the slat conveyor 15 in each stage of each row. An endless drive chain 26 is installed between the slat conveyor 15 and the slat conveyor 15 is rotated by driving each sprocket 23 and using a pair of sprockets 6.6 as driving sprockets. Also, the other pair of sprockets 6a, 6a
is a driven sprocket, a take-up mechanism 35 is attached to the sprockets 6a, 6a, and the slat conveyor 15
This is to adjust the tension. 27.28 are each L
This is a refrigerant hose that circulates a refrigerant such as R22 to each of the lower contact heat exchange plates 1.2.

2 is a carry-in conveyor, and 30 is a general output conveyor, which are installed in a direction perpendicular to the general large end and discharge end of each row of slat conveyors 15, and have an entrance 2' bored into the heat-insulating wall 3a.
The freezer 3 is connected to a processing factory or the like via the outlet 9a and the outlet 30a. Reference numeral 31.31 denotes a bridge or a lifter, which is installed between the carry-in end and the carry-out end of the slat conveyor 15 of each row and the carry-in conveyor 29 and the carry-out conveyor 30, respectively. It can go up and down to the slat conveyor 15 of each stage, and the carry-in conveyor 29 and the carry-out conveyor 30
and the slat conveyors 15 at each stage of each row.

Reference numeral 32 denotes a stopper and pusher, which is installed at the input end of each row of slat conveyors 15 on the input conveyor 29. are stopped in series, two at a time, at appropriate intervals, and pushed out onto the bridge or lifter 31 of the above-mentioned example of the carry-in end.

Further, when the stopper/pusher 32 completes pushing out the container 18 onto the bridge or lifter 31, the stop operation of the container 18 is released, and the container 18 conveyed by the carry-in conveyor 29 is transferred to the next designated stopper/pusher 3.
2. 33 is a bypass conveyor,
It connects the two terminal ends of the first general conveyor and the start end of the second outgoing conveyor 30, and is used to store containers 18 that are not stopped by the stopper/butcher 322 at the end of the incoming conveyor 29, or various defective containers that are not suitable for freezing. Said population 29a
It is detected by a sensor (not shown) attached to G, and is conveyed to a carry-out conveyor 30, and then returned to a processing factory or the like by the carry-out conveyor 30. Here, one person of the container 18 to the slat conveyor 15 of each stage of the pre-specified row is:
1. By selecting the stage to be carried in using the bridge or lifter 31 at the general entry end, the geared motor 24 of the stage is operated;
When the bridge or pusher 31 reaches the stage, the slat conveyor 15 is rotated by the width of the containers 18, and the containers 18 of the bridge or lifter 31-1 are carried in two at a time. In addition, the containers 18 are unloaded from the slat conveyor 15 at each stage of a pre-specified row by selecting the stage to be unloaded by raising the lifter 31 or the lifter 31 at the llu exit end. The container 18 placed between the front and rear pushers 17° 17 on the slat conveyor 15 is pushed onto the bridge or lifter 31 by the rear pusher 17, and the bridge or lifter 31 is transferred to the conveyor 30. This is done by lowering the container 18 to a conveyor 30. By starting and stopping the carry-in conveyor 29 and the carry-out conveyor 30, stopping the containers 18 by the stopper/butcher 32, and releasing the stops, the i! The slat conveyor 15 of each stage of the row is raised by the lifter 31.
selection, rotation of each slat conveyor 15, vertical movement of the contact type heat exchange plates 1.2 in each row and each stage, and rotation of the containers 18 for a certain period of time (2 to 4 hours) by each heat exchange plate 1.2. Freezing, selection of a row to be carried out by operating the carry-out end bridge or lifter 31 after freezing for a certain period of time, vertical movement of the contact heat exchange plate 1.2 in the row in the opposite direction, and raising of the bridge or lifter 31. A series of controls such as selection of the slat conveyor 15 at each stage of the row and rotation of each slat conveyor 5 are controlled by a computer or a sequencer. It is something that does l+. 34.34 is insulation material,
They are attached to the opposing surfaces of the flat tank 1.2, respectively, to prevent heat from penetrating from surfaces not directly involved in freezing. Furthermore, the present invention provides a sensor (not shown) for color identification etc. on the loading conveyor 29, and the contact conveyor freezer 1 is controlled by a computer etc.
The device can also be configured to select each row and column of 6.

(Effects of the Invention) As described above, in the present invention, since the slat conveyor 15 is interposed between the contact type heat exchange plates 1 and 2 facing each other in the freezer 3, the containers 18 containing the products to be frozen are transferred to the carry-in conveyor 29. From there, or directly to the step conveyor 30 mechanically and automatically, no human power is required, which is convenient for labor saving and heavy labor measures. Conveyance 6 also used for cargo handling!
Since the slat conveyor 15 is used for H, the container I8 for storing the frozen product may be either frozen bread or a paper bag, and it will not become unusable due to the product form due to packaging materials, etc. Furthermore, in the present invention, since a conveying device is provided between each contact type heat exchange plate 1.2, 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. It is possible to install 150 rows of slat conveyors (contact conveyor freezer 16) with four stages, and the effective number of stages of the contact type heat exchange plate of the contact conveyor freezer 16 of the present invention is four stages, which is the effective number of stages of the conventional contact freezer. Although it is considerably smaller than that of conventional contact freezers, the amount of freezing processing per unit floor area can now be comparable to that of conventional contact freezers. In addition, if the containers 18 are color-coded in advance according to fish type, size, or grade using a color identification sensor installed on the delivery conveyor 29,
Various sorting becomes easier to manage.

[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. 3 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, 8; 3 Tip extension, 9-shaft, 10 Roller chain, 11-link plate, [2-blade, 13-support plate, 14-screw, 15
Slat conveyor, 16-Contact conveyor freezer, 17 Butcher-118 container, 19-Blade, 2
0 hiss, 21- guide rail, 22- roller, 23
Sprocket, 24 - Cart motor, 25 Sprocket, 26 Drive chain, 27.28 Refrigerant boss, 29 = Loading conveyor, 29a Population, 3
0 - Unloading conveyor, 30a Exit, 31 - Bridge or lifter, 32.32a - Stopper and pusher,
33-Bypass conveyor, 34-2 cutting materials, 351. Take-up mechanism.

Claims (1)

[Claims] 1. A conveyor on which frozen products are placed between vertically movable contact heat exchange plates in the freezer is rotated, and frozen products are placed on the conveyor between the heat exchange plates. A method for handling frozen items in a freezer, characterized by freezing the items and transporting the items between heat exchange plates and carrying them out from between the heat exchange plates. 2. A pair of upper and lower contact heat exchange plates is installed in the freezer in multiple stages and rows, and each pair of plates is movable in the vertical direction, and between each heat exchange plate is used for transporting frozen products. A device for handling frozen goods in a freezer, characterized by having a conveyor installed therein. 3. A pair of upper and lower contact heat exchange plates is installed in the freezer in multiple stages and in multiple rows, each pair of plates is movable in the vertical direction, and one pair is provided on each side of each pair of heat exchange plates. An endless roller chain is installed, and the roller chain is used as a slat conveyor that runs between each pair of heat exchange plates.A pusher for frozen products is attached to the slat conveyor, and each slat conveyor in each stage and row is driven by a drive device. A carry-in conveyor and a carry-out conveyor are installed at the carry-in end and carry-out end of each row of slat conveyors, respectively, and between the carry-in end and carry-out end of each row of slat conveyors and the carry-in conveyor and carry-out conveyor. A device for handling frozen goods in a freezer, characterized in that a bridge or a lifter is provided on the slat conveyor, and a stopper and pusher are provided on the loading conveyor facing the slat conveyor in each row.