JPS6240254B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sagger removal device for removing ceramic products such as ceramic dishes from a circular sagger pot after firing, and in particular, for removing saggers that have been welded together during firing. The present invention relates to a sagger removal device that has a function of forcibly separating the saggers and positioning the saggers at a predetermined position.

Prior Art Ceramic products such as ceramic plates are usually fired while being stored in a circular sagger.The sagger removal device for taking out the ceramic products from the sagger after firing has conventionally been a product carrying conveyor and a sagger. A lifting platform is installed between the unloading conveyor and the circular saggers containing fired ceramic products, and a suction cup and saggers are used to transfer the products to a movable member that reciprocates horizontally while maintaining a constant posture. and suction cups are mounted at intervals in the moving direction, and the reciprocating movement of the moving member allows the product transfer suction cup to move between the top of the lifting table and the product carrying out conveyor, and the sagger transfer suction cup to move between the top of the lifting table and the top of the product carrying out conveyor. The products are reciprocated between the top and the top of the sagger delivery conveyor, and the products are sequentially sucked by the product transfer suction cup from the top of the saggers stacked on the lifting platform and transferred to the product delivery conveyor. Then, the empty sagger from which the product has been taken out is sucked by the sagger transfer suction cup and transferred to the sagger transport conveyor, and the uppermost sagger stacked on the elevating platform is kept at a constant level by the elevation of the elevating platform. Devices that are designed to be kept at a certain height are known.

Problems to be Solved by the Invention However, when firing ceramic products such as ceramic plates, it is normal to stack a large number of saggers at a height of 1 to 2 meters, and the saggers are not in contact with each other. Because large pressure is applied to the surfaces and they are exposed to high temperatures, the saggers pulled out of the kiln are often welded to each other vertically, and the saggers are simply welded together one after the other, starting with the top sagger. Just by sucking it up and lifting it,
There is a risk that the lower saggers still containing products will be transferred to the sagger delivery conveyor together with the upper saggers, and the saggers brought in from the kiln may suffer from errors when stacked or during transport. They are often misaligned due to vibration, and if the empty saggers are suctioned with a suction cup while they are still misaligned and transferred one after another to the sagger delivery conveyor, the empty saggers will remain misaligned and stacked on top of each other, causing them to tilt during transportation. There was a danger of falling.

The present invention has been completed in view of the above points, and includes forcibly separating the uppermost sagger of stacked saggers from the second sagger that is welded to each other, and
To provide a sagger removal device which takes out a product from a sagger while positioning it at a predetermined position.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.

In the figure, three sets of stacked saggers, each consisting of a fixed number of stacked circular saggers b containing fired products a, are transported to a sagger removal position A set on one side of the main body frame 1. Conveyor 2 is installed,
On both sides, there is a product carry-out conveyor 3 for carrying out the product a taken out from inside the sagger b, and a sagger carry-out conveyor 4 for carrying out the empty sagger b after taking out the product a.
A horizontal beam 6 extending over the upper surface of the main body frame 1 has a horizontal moving frame 9 that reciprocates along a guide bar 8 by the drive of a horizontal cylinder 7. equipment,
A moving member 11 that moves up and down when driven by a downward cylinder 10 installed on the horizontal moving frame 9 is attached, and a product transfer suction cup 13 and a sagger transfer suction cup 14 are respectively connected to a vacuum pump (not shown) on the lower surface thereof. are attached at the same intervals as the intervals between the conveyors 3, 2, and 4, and due to the horizontal reciprocating motion of the horizontally moving frame 9 and the vertical movement of the moving member 11, the moving member 11 draws an inverted U-shaped trajectory. The movable member 11 is configured to reciprocate.
In the movement process to the right in FIG. A pot transfer suction cup 14 adsorbs an empty sagger b and transfers it above the sagger discharge conveyor 4.

A pair of endless chains 16 whose corresponding surfaces run upward are spanned on both sides of the above-mentioned carry-in conveyor 2, and the stacked chains 16 are placed on a receiving plate 18 by supports 17 protruding from the corresponding surfaces. By supporting the saggers and intermittently raising them by a certain distance corresponding to the thickness of one sheet of saggers b, the topmost saggers b are kept at a constant height, and the saggers A pair of endless chains 19 running in the opposite direction to the endless chain 16 are spanned on both sides of the pot unloading conveyor 4, and each time an empty sagger b is stacked on a receiving plate 21 supported by a support 20, When the saggers b are intermittently lowered by a certain size and received at the same height, and a certain number of saggers b are piled up, the sagger transport conveyor 4
In addition, the product delivery conveyor 3 has two belts 2 on the left and right, which can change the corresponding interval on the conveyance surface by driving cylinders 23 that expand and contract symmetrically.
4 and 24, and a grindstone 26 which is rotated by the driving force of a motor 25 is installed on the lower surface of the conveyance surface, and with the left and right belts 24 spread out, the product a is lowered and pressed against the grindstone 26. By polishing the thread bottom, the product a is raised a little, and then the belt 24 is narrowed and transferred, thereby transporting the product a.

A device B for separating and positioning the saggers b is installed at the sagger removal position A described above.This will be explained below. Support shafts 31 and 31 are respectively extended between the support shafts 30 and supported to rotate freely, and a swing arm 3 that swings integrally with each support shaft 31 is provided at both ends of both support shafts 31.
The lower ends of 2 and 32 are fixed, and the front and rear swing arms 32,
Mounting shafts 33, 33 are respectively extended over the upper ends of the mounting shafts 32 and supported to rotate freely, and a pair of elongated left and right mounting plates 35, 35 are fixed to both mounting shafts 33 in a horizontal position with their distal edges facing inward. A rotating sprocket 37 is fixed to the outwardly projecting end of one of the swing arms 32 of both mounting shafts 33, and a fixed sprocket 38 is fitted onto the support shaft 31 so as to be relatively freely rotatable. Moreover, it is fixed non-rotatably to the vertical frame 30 described above, and an endless chain 39 is stretched between the fixed sprocket 38 and the rotating sprocket 37, and both support shafts 3
Levers 41, 41 parallel to each other are fixed to 1, and their tips are connected by a connecting rod 42, and the tip of a connecting lever 44 fixed to the support shaft 31 on one side is connected to a vertical lever on the other side. A piston rod 46 of a cylinder 45 attached to the frame 30 is connected, and when the piston rod 46 expands or contracts, the swinging arms 32, 32 are symmetrical between the positions shown by the solid line and the chain line in FIG. As described above, the endless chain 39 is stretched between the rotating sprocket 37 and the fixed sprocket 38, and as the mounting shaft 33 revolves around the support shaft 31 at a certain angle, it rotates in the opposite direction at the same angle. As a result, the left and right mounting plates 35, 35 fixed to the mounting shaft 33 can move forward to the solid line position in the figure or retreat to the chain line position while maintaining their horizontal positions.

A pair of rollers 50 in which a large roller 51 and a small roller 52 having different diameters are rotatably supported by a shaft 53 is installed at the tips of the mounting plates 35, 35, and the mounting plates 35, 35 are close to each other. In this state, on one mounting plate 35, the large roller 51 is placed on the topmost sagger b of the sagger b superimposed on the receiving plate 18.
The small roller 52 corresponds to the second sagger b from the top, and on the other mounting plate 35, the small roller 52 corresponds to the top sagger b, and the large roller 51 corresponds to the second sagger b. As shown in FIG. center of the inscribed circle of
O' is shifted in the moving direction of the roller pair 50, 50, and when both the mounting plates 35, 35 described above are close to each other, the diameter of the inscribed circle of the upper large roller 51 and small roller 52 is The diameter of the inscribed circle of the lower large roller 51 and small roller 52 is set to be slightly larger than the diameter of the pot b, and conversely, the diameter of the inscribed circle of the lower large roller 51 and small roller 52 is set to be slightly smaller than the diameter of the upper small roller 52. The large roller 51 and small roller 52 are made of synthetic resin with a small friction coefficient, and the lower large roller 51 and small roller 52 are made of rubber with a large friction coefficient. Product transfer suction cup 13
and the sagger transfer suction cups 14 at the same intervals.

Next, the operation of this embodiment will be explained.

As shown by the solid line in FIG. 1, the product transfer suction cup 13
is located above the sagger removal position A, and the sagger transfer suction cup 14 is located above the sagger delivery conveyor 4, and when the stacked saggers at the sagger removal position A are lifted to a certain height. , the cylinder 45 attached to the vertical frame 30 extends and the left and right mounting plates 3
5 and 35 advance to the position shown by the solid line in FIGS. The fourth sagger b is held in between, and the four upper large rollers 51 and small rollers 52 press the topmost sagger b, and as described above, the upper large rollers 51 and small rollers 52 are Since the center O of the inscribed circle and the center O' of the inscribed circle of the lower large roller 51 and small roller 52 are misaligned, the topmost sagger b is welded to the second sagger b. The uppermost sagger b is separated from this by shear force, and the center of the uppermost sagger b is the center O of the inscribed circle of the upper large roller 51 and small roller 52.
It is positioned to match the position.

As the moving member 11 descends and then rises in such a state, the product transfer suction cup 13 attracts and lifts the product a in the uppermost sagger b, and the moving member 1
By moving the moving member 1 to the right, the product a is transferred directly above the product delivery conveyor 3, and as the moving member 11 is lowered, the product a passes between the spread belts 24 and the bottom of the thread is polished. Then, the negative pressure of the product transfer suction cup 13 is released, and the product a is transferred to the narrow belt 24 and carried out, and the sagger transfer suction cup 14 attracts and lifts the topmost sagger b. As mentioned above, the upper large roller 5
The diameter of the inscribed circle of the upper large roller 51 and the small roller 52 is slightly larger than that of the small roller 52, and the coefficient of friction between the upper large roller 51 and the small roller 52 is small. The first part of the moving member 11 that is lifted unhindered by the rollers 52 and continues
By moving to the left in the figure, the sagger b is transferred directly above the sagger transport conveyor 4, and during this time, the cylinder 45
contracts, the left and right roller pairs 50, 50 are separated, and the stacked saggers are lifted by the thickness of one sagger b, and the roller pairs 50, 50 approach again.
The uppermost sagger b is separated and positioned, and in the subsequent downward stroke of the moving member 11, the negative pressure of the sagger transfer suction cup 14 is released and the sagger b is moved to the receiving plate 21.
The product a in the next sagger b is placed at a predetermined position above and the product transfer suction cup 13 is located at the top.
is adsorbed, and the above-mentioned operations are repeated sequentially thereafter.

In the above embodiment, a roller pair consisting of two rollers with different diameters was used to separate and position the uppermost sagger from the second sagger. Instead of using a pair of pressers, for example, a pair of pressing bodies forming a V-shape in a plane with a contact surface close to the sagger and a contact surface far from the sagger formed above and below can be used on both sides of the sagger. The device may be configured to be installed in the opposite direction.

Structure and Effects of the Invention As specifically explained in the above embodiments,
The device for unloading ceramic products of the present invention is provided with a lifting platform for superimposing circular saggers containing fired ceramic products between the product carry-out conveyor and the sagger carry-out conveyor, and maintains a constant posture. A product transfer suction cup and a sagger transfer suction cup are attached to a movable member that reciprocates in the horizontal direction at intervals in the direction of movement, and the reciprocating movement of the movable member causes the product transfer suction cup to move to the top of the lifting platform. The sagger transport suction cup reciprocates between the lifting platform and the sagger transport conveyor, respectively,
Starting from the top of the saggers stacked on the lifting platform, the products are sequentially sucked by the product transfer suction cup and transferred to the product carry-out conveyor, and the empty saggers from which the products have been taken out are sucked by the sagger transfer suction cup. In the apparatus for unloading ceramic products, the saggers are transferred to the conveyor, and the uppermost sagger stacked on the lifting table is maintained at a constant height by raising the lifting table,
A pair of supports are provided on both sides of the lifting platform, and each support is provided with a pair of upper and lower contact surfaces having different distances from the sagger. On one of the supports, the pressing body is connected to the uppermost sagger superimposed on the lifting platform, and the contact surface that is closer to the sagger is placed on the uppermost sagger, and the contact surface that is closer to the sagger is placed on the uppermost sagger. The surface corresponds to the second sagger from the top, and on the other support, the contact surface that is farther from the sagger is the one that is closer to the top sagger. The contact surfaces of the saggers are made to correspond to the second saggers, and two saggers are mounted at intervals, and as both of the supports approach, the contact surfaces below the pressing bodies on both sides touch the second saggers. Holding the pot, and pressing the uppermost sagger with the upper contact surface,
The uppermost sagger is separated from the second sagger by shearing force, positioned at a predetermined position, and accommodated in the uppermost sagger by the product transfer sucker and the sagger transfer sucker. The gist of this system is to have a configuration in which the products and the topmost sagger are transferred in sequence, and the topmost sagger is forcibly separated from the second sagger that is welded to each other. This makes it possible to reliably transfer the empty saggers one by one, and since the topmost sagger is positioned at the same time, the empty saggers can be centered on the sagger delivery conveyor. can be superimposed,
There is no risk of the device tipping over during transport, and there is no need for operator supervision, making it possible to achieve complete automation.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of the present invention;
FIG. 2 is a partially cutaway rear view showing details of the separation and positioning device B, and FIG. 3 is a partially cutaway plan view of the same. 3: Product carry-out conveyor, 4: Sagger carry-out conveyor, 11: Moving member, 13: Product transfer sucker, 1
4: Sagger transfer suction cup, 16: Endless chain, 17:
Support, 18: Receiving plate, 35: Mounting plate, 50: Roller pair, 51: Large roller, 52: Small roller, a: Product, b: Sagger.

Claims (1)

[Scope of Claims] 1. A lifting platform for superimposing circular saggers containing fired ceramic products is provided between the product carry-out conveyor and the sagger carry-out conveyor; A product transfer suction cup and a sagger transfer suction cup are attached to a movable member that reciprocates at intervals in the direction of movement, and the reciprocating movement of the movable member causes the product transfer suction cup to move onto the elevating table and onto the product delivery conveyor. The sagger transfer suction cup reciprocates between the elevator platform and the sagger transport conveyor to sequentially transfer the products from the top of the saggers stacked on the elevator platform. The product is sucked by a transfer suction cup and transferred to the product carry-out conveyor, and the empty sagger from which the product has been taken out is sucked by the sagger transfer sucker and transferred to the sagger carry-out conveyor, and the product is stacked on the lifting platform. In a device for dispensing ceramic products, the topmost sagger is kept at a constant height by the lifting of the lifting platform. A pair of repeating supports is provided, and each support is provided with a pair of upper and lower contact surfaces having different distances from the sagger.
The contact surface that is closer to the sagger is placed on the topmost sagger superimposed on the lifting platform, and the contact surface that is farther away from the sagger is placed on the second sagger from the top. In the other support, the contact surface that is farther from the sagger is connected to the uppermost sagger, and the contact surface that is closer to the sagger is connected to the second sagger. , two saggers are mounted at intervals corresponding to each other, and the second sagger is held at the lower contact surfaces of the pressing bodies on both sides by the approach of both the supports,
and presses the uppermost sagger with the upper contact surface, separates the uppermost sagger from the second sagger by shearing force, and positions it at a predetermined position to transfer the product. A sagger removal device for ceramic products, characterized in that the product stored in the uppermost sagger and the uppermost sagger are sequentially transferred using a suction cup and the sagger transfer suction cup.