JP3393667B2 - Shelf transfer device for firing cart - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stack of shelves on which an article to be fired before firing is mounted on a carriage together with a support, and an article to be fired after firing. Transfer device that sequentially loads and unloads shelves on which shelves are placed from a trolley with columns, and more particularly, a shelves for a firing trolley that has been improved in order to stably transfer the pillars standing on the shelves. Mounting device. 2. Description of the Related Art Conventionally, as means for automatically stacking and unloading articles to be fired, such as bowls and dishes, on a truck of a tunnel furnace, loading and unloading are performed on a traveling path of the truck outside the tunnel furnace. Two transfer positions are provided, and a carry-in conveyor and a carry-out conveyor are laid on the side of each transfer position, respectively, and reciprocate between each conveyor and the corresponding transfer position therebetween. A moving vehicle is provided, and the moving vehicle is provided with a shelf transfer device in which a lifter having at least a pair of opening / closing fingers attached to and lifted from the corresponding side edges of the shelf is attached to the support so as to be able to move up and down. Then, by the lifting and lowering movement of the lifter and the reciprocating movement of the moving vehicle, the shelf board on which the articles to be fired before being fired, which has been carried in by the carry-in conveyor, is put together with the pillars standing at predetermined positions on the shelf board. , Stacking on a U-shaped path In this manner, the shelves, the columns, and the fired articles to be fired are sequentially loaded and unloaded onto the unloading conveyer from the carriage that has been stacked and transported to the loading / unloading position after the firing has been completed. Are known. [0003] By the way, the column to be transferred together with the shelf is merely erected at a predetermined position on the shelf, and the column itself does not easily fall over. Although pre-formed, the lifter was not provided with any special means for holding the columns, and the columns often fell during transfer. [0004] If the props fall over during stacking, not only may the fired product be crushed, but also the shelves cannot be piled up on the trolley thereafter. Extra work is required, and there is a drawback that the column toppled at the time of loading and unloading breaks the fired product to be fired. SUMMARY OF THE INVENTION The present invention has been completed in view of the above points, and the present invention has been completed in view of the above points. At the position corresponding to the strut, a pressing body is provided that engages with the upper surface of the strut when the opening / closing finger locks the shelf, and presses the strut against the shelf by its own weight or spring elasticity. When the lifter is lowered to lock the shelf on the conveyor or the carriage to the opening / closing finger, the pressing body provided on the support of the lifter is set up at a predetermined position on the shelf. The strut hits the upper surface of the corresponding strut and presses the strut onto the shelf by its own weight or the elasticity of the spring. [0007] When the opening and closing fingers are locked to the shelf, the shelf, the support standing on the shelf, and the article to be fired are subsequently moved.
It is piled up on a trolley or unloaded on a conveyor along an inverted U-shaped route, during which time the struts are held in a state pressed against the shelf board by a pressing body, and are stably transferred together with the shelf board. Is done. When the transfer of the shelf board is completed and the lifter rises, the pressing body also separates from the support, and moves together with the lifter to the position of the shelf board to be next transferred. An embodiment in which the present invention is applied to a stacking position of a shelf board will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 denotes a baking truck that is configured to stack articles to be fired a in multiple stages via a shelf b and circulate through a tunnel furnace, and that four shelves b per stage are provided. And a stacking position X is installed on the traveling path of the truck 1 just before the entrance of the tunnel furnace. On the side of the stacking position X, a carry-in conveyor 2 for shelves b is laid, and the carry-in conveyor 2 forms a set of four shelves b stacked on the carriage 1 at a time. The articles to be fired before firing are placed side by side on the upper surface of each shelf board b, and are placed at each of three points at both ends of the front edge and at the center of the rear edge. ,
A column c is erected. A rail 4 is laid on a frame 3 installed so as to cross over the carry-in conveyor 2 and the stacking position X,
A moving vehicle 5 is mounted on the rail 4, and the moving vehicle 5 has a pinion 8, which is driven in the forward and reverse directions by a first motor 7 attached to the moving vehicle 5, mounted on the frame 3 in parallel with the rail 4. The rack 9 is meshed with the delivered rack 9 and reciprocates by self-running between the carry-in conveyor 2 and the stacking position X. A lifter 1 for lifting a shelf board b is provided on a moving vehicle 5.
1 is provided so as to be able to move up and down. As shown in FIGS. 3 and 4, the lifter 11 has a pair of left and right fingers 1 protruding from the lower surface of a horizontal support plate 12 and opening and closing via a link 15 by expansion and contraction of a piston rod 14 of a cylinder 13.
6, a total of eight sets, two sets for each shelf b, are mounted, and a screw rod 18 protruding from the center of the upper surface of the support plate 12 in the longitudinal direction moves as shown in FIG. A guide bar 22 that is screwed into a female screw body 20 that is driven to rotate in the normal and reverse directions at a fixed position by a second motor 19 attached to the wheel 5, and that protrudes from both sides of the screw rod 18 is attached to the moving vehicle 5. The female screw body 20 is fitted in the guide cylinder 23 provided.
The screw rod 18 is screwed up and down by the rotation of
The lifter 11 moves up and down while being guided by the guide bar 22. In the present embodiment, in particular, fitting holes 25 are provided in the support plate 12 of the lifter 11 at positions corresponding to the columns c standing on the shelf plate b, respectively. Hole 25
Inside, a pressing rod 27 made of a heavy material provided with a head 28 pressing the upper surface of the column c at the lower end is fitted so as to be vertically movable,
By locking the flange 29 formed at the upper end to the rim of the fitting hole 25, as shown by the chain line in FIG. 3 and the solid line in FIG. Next, the operation of this embodiment will be described. As described above, when the four shelves b on which the pillars c are erected and on which the articles to be fired a are placed before firing are carried in by the carry-in conveyor 2 and stopped, first, a pair of shelves provided on both sides of the carry-in conveyor 2 are provided. When the positioning plates 30 approach each other due to the extension of the cylinder 31 and sandwich the shelf b from the left and right sides, each shelf b is aligned in a posture along the center line of the conveyor 2. Thereafter, when the lifter 11 waiting above the conveyor 2 descends toward the upper surface of the shelf b,
Before reaching the descending end, the pressing rod 27 which is hung from the support plate 12 of the lifter 11 through the fitting hole 25 hits the upper surface of the corresponding column c set up at a predetermined position on the shelf plate b, and the subsequent lifter 11 While descending, the lifter 11 reaches the descending end and the finger 16 closes and is locked to the shelf board b while the pressing rod 27 is moved upward in the fitting hole 25 so as to be pushed up by the column c. By the way, as shown by the solid line in FIG. 3, the pressing rod 27 presses the support column c onto the shelf board b by its own weight. Subsequently, by lifting and lowering the lifter 11 and moving the moving vehicle 5 to the stacking position X, the shelf board b, the support column c erected thereon, and the article to be fired a have an inverted U-shape. While being stacked on the carriage 5 stopped at the stacking position X by the route, the column c on the shelf b is pressed by the pressing rod 2 during that time.
7, is pressed against and held against the shelf board b, and is stably transferred together with the shelf board b. When the transfer of the shelf board b onto the trolley 1 is completed and the lifter 11 rises, the pressing rod 27 is accordingly moved into the fitting hole 2.
While moving down the support 5, it moves away from the support column c and moves toward the carry-in conveyor 2 together with the lifter 11 to transfer the next set of shelves b. In the above embodiment, the pressing rod 27 is made of a heavy material, and the column c is pressed by its own weight.
The pressing force may be obtained by a spring force of a compression coil spring or the like as a lightweight pressing rod. Further, the present invention can be similarly applied to a shelf board transfer device used for loading and unloading a fired product from a cart onto a carry-out conveyor. As described above, according to the present invention,
During the transfer of the shelf by the lifter, the support can be stably held on the shelf by pressing the support with the pressing body, and the support can be reliably transferred without overturning. Therefore, it is possible to prevent the article to be fired from being crushed or broken due to the fall of the support, and it is possible to achieve complete automation without having to monitor the fall of the support. . In addition, the simple structure in which the pressing body that obtains the pressing force by its own weight or the spring elasticity is provided on the support of the lifter has the effect that it can be installed at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of the entire structure of a shelf board transfer device to which the present invention is applied. FIG. 2 is a plan view thereof. FIG. 3 is a partially cutaway enlarged front view of a lifter portion. FIG. 4 is an enlarged side view thereof. [Description of Signs] X: Stacking position a: Product to be fired b: Shelf board c: Support
1: Truck 2: Loading conveyor 5: Moving vehicle 11: Lifter 12: Support plate (support) 16: Finger 25: Fitting hole 27: Pressing rod (Pressing body) 28: Head
29: Tsuba

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI B65G 60/00 B65G 60/00 B F27D 3/12 F27D 3/12 C // B66C 1/28 B66C 1/28 B (56) References Special Opened 58-6829 (JP, A) Opened 63-173124 (JP, U) Opened 53-148488 (JP, U) Opened 60-23696 (JP, U) Opened 62-135684 ( JP, U) JP-A 56-33275 (JP, U) JP-A 4-110398 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65G 57/03 B65G 59/02 B65G 47/52 101 B65G 47/90 B65G 60/00 B66C 1/28 F27D 3/12

Claims (1)

(57) [Claims 1] A transfer position provided in the middle of a traveling path of a bogie, and the conveyor and the transfer position above a conveyor laid on the side of the transfer position. And a lifter having at least a pair of opening / closing fingers attached to a supporting body for locking and lifting the corresponding side edges of the shelf board and lifting the lifter. The shelf on which the unbaked articles carried by the carry-in conveyor are loaded by the lifting and lowering movement of the lifter and the reciprocating movement of the moving vehicle, together with the support pillars set up at predetermined positions on the shelf. , On the carriage at the transfer position in the form of a U-shape,
From the trolley that has been transferred to the transfer position after firing is completed,
In a shelf transfer device that is configured to sequentially load and unload the shelf, the support and the fired article to be fired on the carry-out conveyor, at a position corresponding to the support standing on the support shelf of the lifter, When the opening / closing finger engages with the upper surface of the support when locking the shelf, a pressing body is provided for pressing the support against the shelf by its own weight or spring elasticity. apparatus.