JP2582554Y2 - Star wheel attachment / detachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a star wheel attaching / detaching device used for a container conveying device in a container filling machine, a container washing machine, a labeler, and the like.

(Prior Art) FIGS. 8 and 9 show a conventional attaching / detaching device for a star wheel of this kind. In these figures, 5 is a container, 6 is a table, 7 is a star wheel shaft, 8 is a bearing, 9 is a cycloid gear, 10 is a housing, 14 is a column of the table 6, 19 and 20 are nuts and bolts of the column 14, 51 is a swing clamp, 53 is an eccentric cam lever, 54 is a pin, 57 is a snap ring, 34A is a star wheel, 35A is a container guide, 37
Reference numerals A and 37B denote a clamp assembly, 38 denotes a star hub, 39 denotes a positioning pin, and 40 denotes a container guide mounting plate. With these configurations, the eccentric cam lever is raised and lowered to allow a star wheel and a container between the swing clamp and the star hub. A device in which a guide is tightened or released (see Japanese Utility Model Laid-Open No. 1-143723) is conventionally known.

(Problems to be solved by the present invention) However, in the above-described conventional technology, the star wheel is changed in accordance with the change of the outer diameter of the container in accordance with the change of the container to be handled. As a mechanism for this, an eyebolt is implanted in the mounting base of the star wheel, a swing clamp is fitted to the eyebolt so as to be able to move in the axial direction and horizontally turn, and an eccentric cam lever is pivotally attached to the eye portion at the upper end of the eyebolt. Since a quick motion mechanism that moves the swing clamp up and down by the eccentric cam lever to fix the bottom of the star wheel is used, a special swing clamp assembly is required, and the mounting space for this swing clamp assembly is Because there is only a narrow space at the center of the Was.

In view of this point, the present invention uses a simple configuration to ensure that changes in the star wheel due to changes in the containers to be handled can be securely mounted and removed by pressing the push button and rotating the star wheel or clamp plate by about 60 °. It is an object of the present invention to provide a detachable device for a star wheel.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a star wheel provided with pockets for transporting containers at equal intervals on an outer peripheral portion. A lower plate having an uneven hole, a push button provided to be able to advance and retreat in a connection hole provided in the lower plate, and a star hub rotatably provided on a table for mounting the lower plate of the star wheel. A clamp plate provided above the star hub and having a plurality of concave and convex portions formed on the outer periphery thereof, the concave and convex portions matching the concave and convex holes of the lower plate of the star wheel, and interlocking with the push button provided on the upper surface of the star hub so as to protrude and retract. A connection pin is provided, and the distance between the clamp plate and the star hub is set to be slightly wider than the thickness of the lower plate of the star wheel. When the wheel is mounted, the connection pin is connected to the connection hole with the lower plate positioned between the clamp plate and the star hub.

(Operation) By adopting the above configuration, the present invention has a simple configuration. When the star wheel is mounted, the hole of the star wheel is inserted from above so as to match the irregular shape of the outer periphery of the clamp plate (this At this time, the connection pin is jumped by a compression spring, but when the star wheel is placed, the connection pin sinks into the main body due to its weight.) Then, the star wheel or the clamp plate is turned and fixedly mounted until the connection pin comes out.

Also, when removing the star wheel, press the push button (when the push button is pressed as shown in FIG. 3), the connecting pin is pushed down against the compression spring to release the engagement between the star hub and the star wheel. It can be removed by turning it up and pulling it up until it conforms to the outer shape of the clamp plate.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 7, the container 5 continuously conveyed by the container conveyor is indexed by the screw 1 and conveyed to the filling unit (not shown) at an equal pitch by the inlet star wheel 2A. Therefore, after the container 5 is continuously filled, the container 5 is conveyed to the closure unit 4 by the transfer star wheel 2B, and is continuously sealed there, and the container 5 is placed on the discharge container conveyor by the outlet star wheel 2C. Transport. In addition, entrance star wheel 2A, transfer star wheel
2B and the outlet star wheel 2C transport the containers 5 at an equal pitch. 3A, 3B, 3C and 3D are guides for defining the container 5 in the circumferential direction. In this case, it is necessary to replace the star wheels 2A, 2B, 2C according to the outer diameter φD of the container to be used.

Next, the structure of the star wheel will be described with reference to FIG. A fixed star wheel shaft 7 is fixed to the upper surface of the table 6 with bolts. A housing 10 having a bearing and a cycloid gear 9 attached to the star wheel shaft 7 is attached thereto.
Attach to 10. The Star Wheel 2A is a Star Hub 11
Fix on top. The drive transmission in the rotation direction of the star wheel portion is transmitted to the cycloid gear 9 from a portion not shown, and the cycloid gear 9, the housing 10, the star hub 11, and the star wheel 2A are integrated, and the center of the fixed star wheel shaft 7 is centered via a bearing. To rotate. As shown in FIG. 3, the connecting pin 12 for positioning and engaging with the lower end of the push button 18 is for fixing the star wheel 2A in the rotation direction.

The structure of the container guide portion is a conventionally known structure, in which several columns 14 including a portion not shown are fixed on the upper surface of the table 6 including a portion not shown, and a guide mounting plate is provided on the upper surface.
15 is fixed with bolt 20. The container guide 3A is fixed to the container guide mounting plate 15 with an appropriate fixing tool.

Next, regarding the structure for attaching and detaching the star wheels 2A, 2B, and 2C that transport the containers 5 such as bottles and cans at an equal pitch,
Referring to FIGS. 4 and 5, a plurality of uneven holes 17 are formed in the center of the lower plate 16 of the star wheel, and the uneven holes 17 are formed in the star wheels 2A, 2B, 2C. The star hub 11 is engaged with the clamp plate 21 to which the star hub 11 is attached, rotated and fixed. It goes without saying that the clamp plate 21 attached to the star hub 11 has a shape to be inserted into the uneven holes 17 formed in the lower plate 16 of the star wheel. Further, as shown in FIG. 3, one or more connecting pins 12 are provided on the outer peripheral end of the star hub 11, and push buttons are provided on the peripheral ends of the lower plates 16 of the star wheels 2A, 2B, 2C so as to conform to this. 18 are provided. The connecting pin 12 is used for both positioning and torque transmission.
The spring 23 is inserted into a receiving body 22 fixed to the
As shown in the figure, a protruding portion for receiving the pin is provided so as to be constantly urged upward. The push button 18 is biased by a spring 25 so as to always protrude upward so as to engage with the upper portion of the connecting pin 12, and is provided as shown in the figure. 26 and 27 are connecting pins
It is a ring made of oil-less metal or the like to make the vertical movement of 12 and the push button 18 smooth.

Next, the operation for attaching / detaching the star wheel is described in the sixth.
Referring to FIG. 7 and FIG.
In order to match the shape of the clamp plate 21 as shown in the drawing, the uneven hole 17 in the center of the star wheel 2A is
And insert the star wheel from the top as shown by the arrow, and then rotate the star wheel 2A in the direction of transport of the container as shown by the arrow until the connecting pin 12 comes out of the hole formed in the star wheel by the biasing force of the spring. Completes the installation.
At this time, when the star wheel is inserted from above with its shape matched with the clamp plate, the connecting pin 12 sinks into the star hub main body due to the weight of the star wheel 2A, and jumps out by rotating the star wheel as described above.

Next, when removing the star wheel 2A, as shown in FIG. 7, rotate the star wheel 2A in the direction of transport of the container as shown by an arrow while pressing the push button 18,
At the position where the concavo-convex hole 17 formed in the center of the star wheel 2A is turned until it conforms to the shape of the clamp plate 21, it is pulled upward as indicated by an arrow. The push button 18 used for detachment is used for adjusting the phase and releasing the connection pin 12.

Needless to say, the mounting and dismounting of the star wheel 2A can be performed not by turning the star wheel 2A as described above but by turning the clamp plate 21.

As described above, either the star wheel 2A or the clamp plate 21 is rotated and the star wheel can be replaced in combination with the pressing of the push button, reducing the number of parts and greatly shortening the replacement time. You can do it.

(Effects of the Invention) The present invention has the following effects based on the above configuration.

(1) A swing clamp assembly having a special structure is not required, and the swing clamp assembly has been released from having to be mounted in a narrow space. You can now exchange Star Wheels on time.

(2) The configuration for attaching and detaching is simplified, and the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a star wheel portion of a container transport device according to one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line ZZ in FIG. 1, and FIG. FIG. 4 is a plan view showing a mounting state of the star wheel and the clamp plate, FIG. 5 is a plan view showing a state when the star wheel and the clamp plate are removed, and FIG. Fig. 7 is an explanatory view of the installation of the star wheel, Fig. 7 is an explanatory view of the removal of the star wheel, Fig. 8 is a plan view of the conventional container transporting apparatus, and Fig. 9 is used for the conventional container transporting apparatus. FIG. 3 is a plan view of a clamp assembly that is in operation. 1 Screw 2A, 2B, 2C Star wheel 3A, 3B, 3C Container guide 4 Closure part 5 Container 6 Table 7 Star wheel shaft 9 Cycloid gear 10 Housing 11 Star hub 12 Connecting pin 17 Uneven hole 18 Push button 21 Clamp plate

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Claims (1)

(57) [Scope of request for utility model registration] 1. A star wheel provided with pockets for transporting containers at equal intervals on an outer peripheral portion, a lower plate provided on the star wheel and having a plurality of concave and convex holes in the center,
A push button movably provided in a connection hole provided in the lower plate, a star hub rotatably provided on a table for mounting the lower plate of the star wheel, and a star wheel provided above the star hub. A clamp plate formed on the outer periphery with a plurality of concave and convex portions matching the concave and convex holes of the lower plate, and a connecting pin provided so as to be able to protrude and retract on the upper surface of the star hub and interlocked with the push button, and the clamp plate and the star hub And the connecting pin should be connected to the connecting hole with the lower plate positioned between the clamp plate and the star hub when the star wheel is mounted. Characteristic star wheel attachment / detachment device.