JP2569048Y2 - Blank supply device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, an apparatus for supplying a blank for a container for filling milk, more specifically, a blank which is folded flat so as to be openable in a rectangular tube shape, to a container forming apparatus.

[0002]

2. Description of the Related Art As an apparatus of this type, a large number of blanks which have an outlet at the inner end and are folded flat so as to be openable in the shape of a rectangular tube are stacked from the inner end to the outer end. Magazine, pressing means for pressing inwardly the outermost blank so that the blank can be moved toward the outlet in the magazine, and guide for receiving and guiding the bottom of the blank moved toward the outlet Means are known, wherein the guide means comprises a rail extending inward and outward.

[0003]

[Problems to be Solved by the Invention] When the blank is moved in the magazine, the bottom of the blank rubs against the rail, so the frictional resistance during the movement is large, and it is difficult for the blank to move smoothly toward the outlet. Was.

[0004] It is an object of the present invention to provide a blank supply device in which a blank can smoothly move toward an outlet in a magazine.

[0005]

According to the present invention, there is provided a blank supply apparatus having a plurality of blanks which have an outlet at an inner end and are folded flat so as to be openable into a rectangular tube from the inner end to the outer end. A magazine that is stacked and accommodated over, a pressing unit that presses the outermost end blank inward so that the blank can be moved toward the outlet in the magazine, and a bottom of the blank that is moved toward the outlet. in blank feed devices and a guide means for guiding receiving, guiding means, the inner and outer pulleys being arranged at a predetermined interval, Ri Na more endless belt reeved around the inner and outer pulleys, the inner and outer pulleys And endless belt friction
Therefore, both pulleys are rotated so that
It is characterized by being rotatably supported .

[0006]

In the blank feeding apparatus according to the present invention, the guide means is composed of the inner and outer pulleys arranged at a predetermined interval and the endless belt wound around the inner and outer pulleys. Also move, so the frictional resistance during movement is small.

Further, the inner and outer pulleys and the endless belt
Both pulleys can be rotated only by frictional force.
Since the pulley is rotatably supported, the pressing means
When pressure acts on the blank, the belt rotates both pulleys
The belt and the blank to the outlet.
Once moved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

[0009] As shown in FIG.
An obliquely downwardly outwardly extending bottom forming mandrel 11 stopped at the supply station is disposed obliquely upward and outward on an outward extension line, and has an inwardly directed outlet 12 at the inner end, and a number of flats from the inner end to the outer end. Magazine 13 which stores the blanks B in piles, and a vacuum cup which takes out the blanks B one by one from the magazine 13 and conveys them to the outer extension line
A transfer arm 15 with 14, a guide rail 16 for guiding the blank B being transferred by the transfer arm 15 from a flat shape to a rectangular cylindrical shape, and a blank B opened to a rectangular cylindrical shape on the outer extension line. It comprises a holder 17 for holding and a loader 18 for fitting the blank B held by the holder 17 onto the mandrel 11.

As shown in detail in FIGS. 2 to 4, the magazine 13 is provided with inner and outer support bases 21 and 22 having an inverted L-shape in cross section arranged at a predetermined interval, and standing upright on the inner support base 21. A gate member 23 provided and surrounding the outlet 12 together with the inner support 21
And a pair of open claws 24 provided on both longitudinal members of the gate member 23, and a pair of horizontal bar-shaped bottoms which are parallel and spaced apart from each other on the inner and outer support bases 21 and 22 at intervals. A guide 25, an L-shaped bar-shaped side guide 26, which is suspended in the middle of the height of both longitudinal members of the gate 23 and the outer support 22
27 and.

At the middle of the height of the inner and outer support bases 21 , 22 , a pair of horizontal guide rods 31 is interposed and a sliding body 32 is supported by them. A main body 34 of a rodless cylinder 33 is fixed to the sliding body 32, and a cylinder tube 35 extends between the guide rods 31 and is transferred to the inner and outer support bases 21 and 22. A pair of brackets is provided at both ends of the slide 32.
The bracket 36 is provided upright, and a pair of pressing claws 37 are swingably attached to each bracket 36. The pressing claw 37 is urged inward by a spring (not shown).

An inner pulley 41 is located near the inner end of the bottom guide 25.
Are mounted directly, and an outer pulley 42 is mounted via a take-up 43 near its outer end. An endless belt 44 is wound around the inner and outer pulleys 41 and 42. Referring to FIGS. 5 and 6, the belt 44 in the upper moving path is received by the guide plate 45, and in this state, the belt 44 is projected above the bottom guide 25 by a height corresponding to the thickness of the belt 44. ing.

Referring to FIG. 7, which shows an air pressure control circuit of the rodless cylinder 33 , air from an air source 51 is supplied to the rodless cylinder 33 through a pilot-operated solenoid valve 52. The pilot pressure from the low pressure and high pressure pilot pressure setting valves 53 and 54 is
The switching operation is performed based on the signal from 55. The encoder 55 detects a rotation angle of a main shaft (not shown) for driving the transfer arm 15, and outputs a signal corresponding to the detected angle.

Next, the blank removing operation will be described with reference to FIG. The main shaft rotates once (360
Each time the transfer arm 15 performs the process, the transfer arm 15 performs one cycle of the process. When the blank B is sent from the state shown in FIG. 2 to the mandrel 11 by the loader 18, the transfer arm 15 rises, sucks the innermost blank B at the outlet 12 and stops. Then, the transfer arm 15 is lowered, the blank B sucked to the transfer arm 15 is taken out from the magazine 13 while being opened in a rectangular tube shape, and the taken-out blank B is transferred to the holder 17. 15 stops. Then, the transport arm 15 is made to stand by there until the ascent starts in the next cycle.

In the above-described one cycle, low pressure air is supplied to the rodless cylinder 33 until the transfer arm 15 starts to move up and is halfway down while sucking the blank B. Then, high pressure air is supplied to the rodless cylinder 33 only during the period from the middle to the middle of the stop standby,
Thereafter, the air pressure is switched to low-pressure air again. Low pressure air is 1.5~2.5Kg / cm ^2, a high-pressure air is 3~5Kg / cm ²
It is.

The pressing force of the pressing claw 37 is applied to the blank B accommodated in the magazine 13, and the pressing force is low and high by alternately supplying low-pressure and high-pressure air to the rodless cylinder 33. Changes to As a result, the blank B moves smoothly in the magazine 13 as the blank B is taken out and its amount is sequentially reduced.

The blank B moving in the magazine 13 is received by a belt 44. When the blank B moves, the belt also rotates, so that the blank B does not receive any resistance during the movement.

[0018]

According to the invention, since the belt moves with the movement of the blank, the frictional resistance at the time of movement is small, so that the blank can move smoothly in the magazine toward the outlet. .

Further, the pressing force of the pressing means acts on the blank.
When the belt is used, the belt rotates
The blank is moved toward the outlet with the
A uniform pressing force is applied to all the blanks on the belt.
Can be used. Therefore, the innermost blank
To apply a desired amount of pressing force without excess or deficiency.
To make it easier to remove the blank from the magazine.
You.

[Brief description of the drawings]

FIG. 1 is an overall side view of a blank supply device according to the present invention.

FIG. 2 is a perspective view of a main part of the device.

FIG. 3 is a side view of the main part.

FIG. 4 is a plan view of the main part.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 4;

FIG. 7 is a pressing force control circuit diagram of the pressing means.

FIG. 8 is a timing chart of a pressing force operation of a pressing unit.

[Explanation of symbols]

 12 Outlet 13 Magazine 41 Inner pulley 42 Outer pulley 44 Belt B Blank

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Shoji Hirose 10 No. 1, Nishikawa, Taro, Yasushi-cho, Kitajima-cho, Itano-gun, Tokushima Prefecture Inside Shikoku Kakoki Co., Ltd. Taro Shimamachi, Yasu, Nishi-no-kawa, 10-1, Shikoku Kakoki Co., Ltd. References JP-A-61-69441 (JP, A) JP-A-54-40791 (JP, A) JP-A-52-78592 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A magazine 13 having an outlet 12 at its inner end and accommodating a plurality of blanks B which are folded flat so as to be openable in a rectangular tube shape from the inner end to the outer end. Pressing means for pressing inwardly the outermost blank B so that the blank B can be moved toward the outlet 12 in the inside 13; and receiving and guiding the bottom of the blank B moved toward the outlet 12 And a guide means, wherein the guide means comprises inner and outer pulleys 41 and 42 arranged at a predetermined interval, and an endless belt wound around the inner and outer pulleys 41 and 42.
44 and Ri more greens, due to the frictional force of the inner and outer pulleys 41 and 42 and the endless belt 44
So that both pulleys 41 and 42 can be rotated only
A blank supply device, wherein 41 and 42 are rotatably supported .