JPS6328093Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a feeding device for a tray-type container that does not have a flange-like edge on the outer periphery of the opening.

When stacking a large number of containers of this kind and feeding them onto a transfer belt one by one starting from the lowest container, tray-type containers do not have a flanged edge extending around the outer periphery of the opening. Even when conventionally known screws or feeding claws are used, separation and feeding cannot be carried out smoothly, and it is also difficult to reliably hold the upper container group in a fixed position.

On the other hand, as in Utility Model Application No. 55-172235, the surface of the roller that approaches and separates at right angles to the stacking direction of the trays is made to maintain elasticity, and when approaching, the edge of the tray bites into and clamps the tray. A device is also provided in which the endmost tray is separated by opening and closing arms of stoppers provided on orthogonal sides.

However, with this device, the edge of the tray bites into the surface of the approaching roller, so there is a risk that this edge will be pressed and deformed, and when the arm opens, the lowest tray will only fall due to its own weight. Since it is not forcibly separated, the separation does not occur smoothly, and in order to securely hold the upper container, it is necessary to forcefully bite into the edge of the tray, and as a result, as mentioned above, the edge It has the disadvantage of causing deformation of the edges.

This proposal attempts to solve all of the above problems by precisely separating tray-type containers without a flange-like edge on the outer periphery of the opening and sending them out one by one.
In addition, it is possible to securely hold the unseparated upper group of containers without damaging them.

The drawings show one embodiment of the present device, which will be described in detail below.

In the figure, 1 is a machine base, 2 is a top plate built on top of the machine base with an appropriate number of supports 3, 4 is a nearly rectangular cutout space provided in the center of the top plate, and 5 is a stand-up space at the four corners of the cutout space. This is a stack frame 5, and tray-shaped containers are stacked in this stack frame 5 as in the conventional case. In addition, on the machine base 1 below the stack frame 5,
A transfer belt 6 that moves intermittently is installed.

Rotating bodies 7 are provided on both sides of the notch space 4 below the upper plate 2 . This rotating body 7
As shown in Figure 3, the body wall surface is notched in the axial direction at an angle of approximately 90 degrees to form a V-shaped groove 8, and is attached to the front and rear of the cutout space 4 on the lower surface of the upper plate 2. The shaft 7a is pivotally connected between the bearing parts 9 and 10.
, and are installed so as to protrude slightly into the cutout space 4 so that one groove surface 8a can respectively support the end bottom surface of the container in the stack frame 5,
A feed pawl 11 is attached to the end of the other groove surface in the longitudinal direction.

Furthermore, U-shaped retainers 12 are provided oppositely at the center of the upper portions of both sides of the notch space 4 in the direction orthogonal to the rotating body 7 . This retainer 12 is attached to the lower end of a rotating plate 13 with the open ends inside, and the rotating plate 13 is rotated by supports 14 erected on the upper plate 2 on both sides of the notch space 4. Each is fixed to a rotary shaft 15 that is freely held,
When each rotation shaft 15 rotates outward, the rotation plate 13 and the retainer 12 advance together toward the notch space, and the position where the retainer 12 moves forward and stops is between the openings of the stacked containers. The rotating body 7 is
It is set at a position higher than the

Both rotating bodies 7 and both rotating plates 13 are configured such that after both rotating plates 13 simultaneously rotate in the direction of the notch space 4 and the retainer 12 moves forward and stops at the above position, both rotating bodies 7 move into the notch. The operation cycle is repeated in which the retainer 12 simultaneously rotates toward the space 4 side, and after the return rotation, both rotating plates 13 simultaneously rotate outward and the retainer 12 retreats from the region of the notch space 4. ing.

The operating configuration used in this example is
To explain the figure, a bevel gear 16 is attached to one end of each shaft 7a to which a rotating body 7 is fixed, and a rotating shaft 18 of a bevel gear 17 that meshes with the bevel gear 16, respectively.
A sprocket 19 is fixed to one end of the sprocket 19, and one end of a chain 20 wound around the sprocket is pulled by a spring 21 fixed to the machine frame, and the other end is connected to one end of an operating lever 22. This operating lever 22
is rotatably pivoted to the base plate 24 by a support shaft 23, and a spring 25 having a larger elastic force than the spring 21 is stretched from the machine frame at the other end. Cam 28 with child 26 attached to drive shaft 27
It is made to work so that it is always in pressure contact with.

Therefore, in the state shown in FIG. 5 in which the trochanter 26 is in contact with the small diameter portion of the cam 28, the operating lever
is pulled down, sprocket 19 rotates to the left,
The rotating body 7 is simultaneously rotated inward by the bevel gears 17 and 16, and the feed pawl 11 is rotated as shown in FIG.
engages with the lowest container n to separate and send it out (at this time, the retainer 12 is moving forward as will be described later), but when the trochanter 26 comes into contact with the enlarged diameter portion 28a of the cam 28, The lever 22 is pushed up, the sprocket 19 is rotated to the right, and the rotating body 7 is simultaneously rotated outward, returning to a position where one groove surface 8a can support the bottom surface of the container, as shown in FIG.

Further, rotating arms 29 and 30 are fixed to the other end of the rotating shaft 15 to which the rotating plate 13 is fixed, and are connected to each other by a connecting rod 31 so as to rotate in opposite directions. A starting arm 32 is coaxially provided, the other end of an operating rod 33 connected to this is pulled by a spring 40 fixed to the machine frame, and a trochanter 34 pivotally connected to the operating rod 33 is attached to the drive shaft 27. It is made to act so as to be in constant pressure contact with another cam ring 35.

Therefore, in the state shown in FIG. 5 in which the trochanter 34 is in contact with the small diameter portion of the cam ring 35, the operating rod 33 is pulled down, and due to the above-mentioned structure, both rotation shafts 15 are simultaneously rotated outward. Then, the retainer 12 moves forward and the sixth
As shown in the figure, the container n' directly above is held from both sides, but when the trochanter 34 comes into contact with the enlarged diameter part 35a of the camshaft 35, the operating rod 33 is pushed up and the rotating shaft 15
simultaneously rotates inward and the retainer 12 retreats.

At this time, one groove surface 8a of the V groove 8 of the rotating body 7
Since it has already returned to the position where it can support containers, the group of containers in the stack frame 5 is lowered, and the front and rear bottom surfaces of the lowest container n are supported by it, as shown in FIG. Next, both rotating shafts 15 rotate outward at the same time to advance the holder 12, and the rotating body 7 simultaneously rotates inward to separate and send out the lowest container.

Note that the configuration in which both rotating bodies 7 and both rotating plates 13 are driven synchronously is not limited to the configuration of this embodiment, and may be any other suitable configuration, but even in that case, the above-mentioned operation timing is still necessary. be.

As mentioned above, the present device moves the U-shaped retainer forward to hold the container immediately above it, so even if it is a tray-type container that does not have a flange-shaped edge extending around the outer periphery of the opening. This has the effect of being able to reliably separate and hold the containers from the lowest container, which is separated without damaging the edges of the containers at all. In addition, the rotating body is provided with a V-shaped groove in the axial direction, and one groove surface supports the end bottom surface of the lowest container, so that the group of containers that descend when the retainer retreats is reliably received, and further rotates. By rotating the moving body, the feed claw at the end of the other groove surface engages the lowest container, forcibly separates it from the container directly above it, and sends it out onto the transfer belt, so each container is transported one by one. This has the effect of reliably and smoothly separating and supplying containers.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of an embodiment of the present device, FIG. 2 is a sectional view of the main part taken along line A-A in FIG. 1, and FIG.
The figure is a sectional view of the rotating body taken along line B-B, FIG. 4 is a right side view of the device, and FIG. 5 is an explanatory diagram of an example of the drive configuration.
FIG. 6 is a perspective view of the container holding state, and FIG. 7 is an explanatory diagram of the operation of the rotating body. 1... Machine base, 2... Top plate, 4... Notch space, 5
...Stack frame, 7...Rotating body, 8...Groove, 8a
...Other groove surface, 11...Feed claw, 12...Retainer, 13...Rotating plate.

Claims (1)

[Scope of utility model registration request] A notch space is provided in the upper plate installed on the machine base, and a stack frame is erected at the four corners of the notch space, and an axial groove is provided in the body wall at the center of both sides of the notch space, slightly below the stack frame. A rotating body having a feed pawl at the end of one groove surface is provided so as to protrude toward the notch space so that the other groove surface can support the bottom surface of the end of the container, and the rotating body perpendicular to the rotating body At the center of both sides of the notch space, retainers are provided oppositely by a rotary plate and move forward and backward toward the notch space above the rotary body by the distance between the openings of the stack containers, After the child advances synchronously toward the notch space and holds the container directly above it, both rotating bodies simultaneously rotate toward the inside of the notch space to separate and send out the lowest container, and after the return rotation, the two rotating bodies A container feeding device characterized in that an operation is repeated in which the holder moves back and supports the end bottom surface of the lowermost container of the lowered container group on the groove surface of the rotating body.