JPH044363A - Closing mechanism for large can cover plate - Google Patents

Abstract

PURPOSE:To enhance durability as well as to secure sufficient safety by providing driving arms which are turned around while a can cover plate is hanged down, driven arms which are connected to a driven shaft while the can cover plate is supported at the position above the center of gravity of the plate, and also providing a weight imparting torque to the driven shaft. CONSTITUTION:When a driving shaft 2 is rotated clockwise by a driving body 1, driving arms 6 and 6 connected to the driving shaft are turned around, accompanied with which, driven arms 8 and 8 connected to a driven shaft 5 are also turned around, so that a can cover plate 7 is thereby opened. In this case, since a weight 10 connected to the driven shaft 5 imparts torque to the driven shaft 5, the driving body 1 can hang the can over plate 7 up with fairly little force, and when the can cover plate 7 is closed, load due to the weight is thereby reduced. In addition, even when the driving arm 8 is damaged, the can cover plate 7 is still supported by the weight 10 and the driven arm 8, the can cover plate will thereby never fall down, and furthermore, the can cover plate 7 is supported by the driven arm 8 at the position above its center of gravity, the can cover plate 7 will thereby never be rotated either.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a large can lid opening/closing mechanism, and more particularly to a large can lid opening/closing mechanism that allows the lid of a large can such as a pressure can to be opened and closed safely. Regarding.

[Prior Art] Regarding pressure cans and vacuum cans used for various purposes such as pressurized vacuum containers, vulcanized cans, retort cans, and hyperbaric oxygen treatment devices, the work of loading and unloading workpieces into and out of the cans. Therefore, the can lid must be opened and closed. However, since the above can lids are large and heavy, the opening/closing mechanism needs to have a structure that prevents the can lid from falling, swinging, etc., and ensures sufficient safety during operation.

In addition, in recent years, there has been a demand for products that take space-saving into consideration, so many of them have a frame installed at the opening of the can, the can lid is supported by a hoist, etc., and a guide rail runs over the can opening surface. It slides along the 5, and is of H4' construction that opens and closes in the vertical direction relative to the Asahi main body.

[Problem to be solved by the invention] However, in order to move the can lid vertically while supporting it, it is extremely difficult to support the entire weight of the can lid and prevent it from swinging or falling. It requires expensive equipment with a large structure, and requires careful opening and closing operations, which has the disadvantage of poor work efficiency.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an opening/closing mechanism for large can lids that has extremely high safety in opening/closing operations, saves space, and has good operational efficiency.

[Means for Solving the Problems] In order to achieve the above problems, the present invention has the following configuration. That is, the drive arm is connected to a drive shaft rotated by a drive body, and rotates while suspending the can lid, and opens and closes the can opening by reciprocating the can lid in the vertical direction of the can body, and a driven arm that is connected to support the can lid above the center of gravity of the can lid and rotates as the drive arm rotates, and is also connected to the driven shaft, and the lid body extends through the opening of the can body. When closed, the driven shaft is placed vertically and does not apply any rotational force to the driven shaft, and when the drive shaft rotates and the lid moves, the driven shaft is tilted in the direction of lifting the lid. It is equipped with a weight that applies rotational force to the shaft. The above-mentioned sea urchin i'l- can be opened and closed easily and is highly safe by setting the weight between the can lid and the road.

[Example] Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a side view of the opening/closing mechanism according to the present invention, and FIG. 2 is a front view thereof. A drive shaft 2 that is connected to a drive body l such as a motor and rotates is rotatably supported by a bearing fixed to the upper surface of the can body 3 by a stand 4. A drive shaft 5 is further supported on the bearing base 4 above the drive shaft 2, and the driven shaft 5 is provided parallel to the drive shaft 2. Further, one end of a drive arm 6.6 is rotatably attached to both ends of the drive shaft 2, and the other end is rotatably attached to a pedestal 9.9 on the periphery of the left and right side faces of the street clothes 7. It is being Similarly, one end of a driven arm 8.8 is rotatably attached to both ends of the driven shaft 50, and the other end is mounted on a pedestal 9.9 fixed to the peripheral edges of the left and right sides of the can lid 7, which are opposite to each other. At a position that is above the mounting position of the arm 6 and also above the center of gravity of the can lid 7,
It is rotatably mounted.

Since the driving arm 6 and the driven arm 8 are on the same plane, they are shaped like an arc so that they do not come into contact with each other.

Further, at one end of the driven shaft 5, a weight 10 is connected to the body via a support column 11 on the outside of the driven arm 8. This is due to the weight of the can lid 7 and the gap, and when the can lid 7 closes the opening of the can body 3, the support column l
] is fixed in a vertically extending state, so in this state, the weight IO does not act to apply rotational force to the driven shaft 5. On the other hand, when the drive shaft 2 rotates and the can lid 7 moves while being supported by the drive arm 6 and the driven arm 8, as will be described later, the support column 11 is tilted, so the weight 10 applies a rotational force to the driven shaft 5 via the driven arm 8.8 in a direction that lifts the can lid 7.

The opening/closing operation of the can lid 7 will be explained below.

When the can lid 7 first fits into the opening of the can body 3 and closes it, both the drive arm 6.6 and the driven arm 8.8 are driven upwardly, as shown in FIG. It is located below the shaft 2 and the driven shaft. Then, when the drive shaft 2 is rotated by the drive body 1 in the direction of the arrow, and the drive arm 6.6 begins to rotate in the direction of the arrow B, the can lid 7 is pulled away from the opening, and the driven arm 8.6 is rotated in the direction of the arrow B. 8 also turns accordingly. These driving arm 6.6 and driven arm 8,
8 each turn, drawing a trajectory as shown in Figure 1,
When the can lid 7 reaches the driven shaft 5 above the can body 3, the rotation is stopped and the can lid 7 is in an open state. in this case,
When the driven shaft 5 rotates in the direction of arrow C, the weight lO gradually tilts toward the rear of the can body 3, and it applies a rotational force to the driven shaft 5 in a direction that lifts the can lid 7. Therefore, the driver 1 for lifting the can lid 7 can lift the can lid 7 with a small amount of force, and is very efficient.

On the other hand, when closing the can lid 7, that is, returning it to its original position, the weight of the weight IO is transferred via the driven shaft 5 and the driven arm 8.8 in the opposite direction to the direction of movement of the can lid 7. Therefore, the weight load of the can lid 7 on the drive arm 6.6, drive shaft 2, and drive body 1 during /& rotation can be significantly reduced.

Therefore, in this opening/closing mechanism, the durability of the drive body 1, drive shaft 2, drive arm 6, 6, etc. is improved, and it is possible to effectively prevent the can lid 7 from falling due to breakage or deterioration of these components. The can lid 7 can be opened and closed with a small amount of force, and the can lid 7 can be kept in a stable position during operation and is less likely to swing, so it is easy to operate.

Furthermore, even if the drive arm 8.8 is damaged and cannot support the can lid 7, the can lid 7 will fall because it is supported by the weight 10, driven shaft 5, and driven arm 8.8. Furthermore, since these support the can lid 7 above the center of gravity, the can lid 7, which is no longer supported by the drive arm 6.6, will rotate in the direction of the arrow, causing an unexpected accident. You can also prevent it from happening. That is, even if the can lid 7 should be unsupported by the drive arm 6.6, it can maintain its posture by its own weight.

[Effects of the Invention] As explained above, the present invention is connected to a rotating drive shaft by a drive body, suspends and rotates the can lid, and reciprocates the can lid in the vertical direction of the can body to open the can. a drive arm that opens and closes the can lid, and a driven arm that is connected to a coaxial shaft and supports the can lid above the center of gravity of the can lid, and that rotates as the drive arm rotates. When the lid or the opening of the can body is closed, it is vertically erected and no rotational force is applied to the driven shaft, and when the drive shaft rotates and the can body moves, Since a weight is provided to apply rotational force to the driven shaft in the direction of tilting and lifting the attached object, the drive shaft and drive arm are assisted by the weight, driven shaft, and driven arm, greatly improving durability. It also has the effect of ensuring sufficient safety.

[Brief explanation of drawings]

FIG. 1 is a side view of the opening/closing mechanism according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view of the can lid being supported by the drive arm, and FIG. 4 is the can lid being supported by the driven arm. A side view of the lid being supported, and FIG. 5 a front view thereof. 1: Drive body 2: Drive shaft 31 Can body 5: Driven shaft 6: Drive arm 7: Can lid 8: Driven arm 10: Weight procedure amendment September 19, 1990

Claims (2)

[Claims] (1) A drive arm that is connected to a drive shaft rotated by a drive body, suspends and rotates a can lid, and opens and closes a can opening by reciprocating the can lid vertically relative to the can body; a driven arm that is coaxially connected to support the can lid above the center of gravity of the can lid and rotates as the drive arm rotates; When the drive shaft is closed, it is installed vertically so that no rotational force is applied to the driven shaft, and when the drive shaft rotates and the lid moves, it is tilted in the direction that lifts the lid. , an opening/closing mechanism for a large can lid, characterized by being provided with a weight that applies rotational force to a driven shaft. (2) The opening/closing mechanism for a large can lid according to claim 1, wherein the weight has substantially the same weight as the can lid.