JPH0728081Y2 - Hopper device for filling powders and granules - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a bag in which a filling material such as powder or granules is appropriately bent into a U-shaped cross section from the center in the longitudinal direction. The present invention relates to a powder / granule filling hopper device for accurately filling a predetermined amount in a container and successively forming a powder / granule filling bag.

(Prior Art) Conventionally, as a hopper device for filling powder / grain, for example, as in Japanese Utility Model Publication No. 53-28210 developed by the present applicant, the lower end of an inverted conical cylindrical hopper body is cut into a steep slope so that the tip is A diagonal opening formed of an acute angle is formed, and a rib is provided at an intermediate portion on one side of the hopper body, and the leg portion of a thin plate-shaped lever formed in the rib in a substantially inverted> shape is rotatable by a pin. A spring is stretched between a pin that is pivotally mounted and that projects from the upper portion of the hopper body and a pin that is attached to both upper sides of the thin plate lever so that the lower lid portion of the thin plate lever is always attached to the lower end of the hopper body. There is one in which an opening cover gap adjusting screw whose tip is in contact with the upper surface of the rib is attached to the thin plate-like lever so as to be separated from the oblique opening.

(Problems to be solved by the invention) When the powder and granules are filled in the bag by the conventional device, a pair of heat-sealing rolls c as shown in FIG.
A strip-shaped film is placed between 1 and c2 from the center in the longitudinal direction to a cross section of approximately U.
The bag a which is bent into a letter shape and is made into a tubular shape is passed through, and the tip of the slanted opening e at the lower end of the hopper body d is faced in the bag a to fill the powder / granulate b. In this case, the powder / grain b is surely dropped and filled in the bag a at the powder / grain storage recesses f1, f2 formed on the peripheral surfaces of the heat-sealing rolls c1, c2 rotating at a predetermined speed. In addition, if the tip of the oblique opening e is not provided as close as possible to the peripheral surfaces of the heat seal rolls c1 and c2, the powder / granule b has such a property that it is lightweight and easily floats or scatters easily. In the case of etc., this causes scattering at the time of dropping and filling, and this causes the bag a
Although there is a fear that the sealing part g of the above may be bitten, the above-mentioned conventional apparatus has the elliptical shape of the rim of the oblique opening e, so that the tip of the oblique opening e is heat-sealed as shown in FIG. Since it cannot be provided sufficiently close to the circumferential surface between the rolls c1 and c2, there is a fear that the powder / grains b discharged from the oblique opening e may be scattered and not reliably stored in the bag a. Not only there was the problem that there was, but the hopper body d
Side spring retaining pin h and thin plate lever j side spring retaining pin h ', especially in the case of the thin plate lever j side spring retaining pin h', the attachment points are on both sides with thin plate thickness. Since it is carried out in a part, the mounting work is troublesome, and the mounting force is likely to be insufficient, and this is often dropped by the pulling force of the spring i and may be packaged together in the bag a. Since the spring i and the spring retaining pins h and h'project to the outside of the hopper body d, they hinder the attachment work of the belt-shaped film and the opening / closing adjustment work of the thin plate lever in the hopper device, and the plate thickness. However, there was a problem that it could not be made very thin and could not be cheap.

The present invention solves the above-mentioned problems, and can reliably and quickly fill the bag with the powder and granules from the slanted opening at the lower end of the hopper body, and prevent the powder and granules from sticking to the seal part. In addition, the spring does not interfere with the work of attaching the belt-shaped film and adjusting the opening and closing of the thin plate lever in the hopper device, and the spring locking pin can be easily used during the packaging work. It is an object of the present invention to provide a hopper device for filling powder / granulate that does not fall off and is packaged together in a bag.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention cuts the lower end of an inverted conical cylindrical hopper body into a steep slope to form a beveled opening having a sharp tip at the same time as the hopper body. A rib is provided at an intermediate portion on one side, and a leg at a substantially central portion of a thin plate-shaped lever formed in a substantially inverted shape on the rib is rotatably pivoted by a pin and an upper portion of the rib. In the hopper device for filling powder / granular material in which the lid opening gap adjusting screw is attached to the thin plate lever in, between the hopper body immediately below the rib and the thin plate lever, the lateral width dimension of the rib and the A coil-shaped spring having a diameter smaller than the width of the thin-plate lever and always separating the lower lid part of the thin-plate lever from the oblique opening at the lower end of the hopper body is provided, and the hopper is provided. Body A tip portion of the lower end of the inclined opening portion projects downward from the lower end of the inclined opening portion, and curved surfaces are formed on both sides of the distal end portion. It is characterized in that a pen-tip-shaped cover made of a cylindrical body configured to cover is fitted.

(Embodiment) FIG. 1 to FIG. 4 show an embodiment of the present invention, in which 1 is an inverted conical cylindrical hopper body, the lower end of which is cut steeply to form an oblique opening with a sharp tip. 2 is formed. Three
Is a thin plate-shaped lever formed in a substantially inverted shape, and a rib 4 projectingly provided at an intermediate portion of one side of the inverted conical cylindrical hopper body 1.
A leg 5 at a substantially middle portion is pivotally attached to a pin 5. A coil-shaped spring 7 has a diameter smaller than the width of the rib 4 and the thin plate-shaped lever 3 and is interposed between the hopper body 1 and the thin plate-shaped lever 3 immediately below the rib 4. The thin plate-shaped lever 3 is provided by an elastic force.
The lower lid 8 is always separated from the oblique opening 2 at the lower end of the hopper body 1.

Reference numeral 9 is an adjusting screw for adjusting the lid opening distance, which is screwed into the thin plate-shaped lever 3 in the upper portion of the rib 4 and has its tip on the upper surface of the rib 4 or a part of the body peripheral surface of the hopper body 1. It is configured to abut. Reference numeral 10 denotes a pen tip-like cover, which is formed of a cylindrical body as shown in the first drawing, has a tip projecting downward from a lower end of the oblique opening 2 of the hopper body 1, and forming curved surfaces on both sides of the tip. It is formed in the shape of a pen and is fitted so as to cover the outer periphery of the slanted opening 2 at the lower end of the hopper body 1. 11 is a strip-shaped film bent into a U-shaped cross section, 12 and 12 are a pair of heat-sealing rolls, 13 and 13 are concave portions for containing powder / grain, 14 and 14 are sealing surfaces, and 15 is a sealing surface.
Is a seal part, and 16 is powder or granules.

Next, the operation will be described. A cam (not shown) pushes the upper part of the thin plate-shaped lever 3 to the right (indicated by a two-dot chain line in FIG. 2) against the elasticity of the coil-shaped spring 7, and the lid 8
Are pressed against the oblique opening 2. At this time, a certain amount of powder / granular material 16 is introduced from above the hopper body 1 and deposited on a sharp portion composed of the lid portion 8 and the oblique opening portion 2 as shown in FIG. Most of the accumulated powder and granules 16 are placed on the steeply inclined lid portion 8, and the contact portion with the inner wall of the oblique opening 2 gradually decreases from the left to the right. Since the adhesion resistance is reduced, the bridging phenomenon due to the powder and the granules does not occur. Therefore, when the lid 8 is opened, it hardly adheres to the inner wall of the oblique opening 2 and falls entirely into the belt-shaped film 11 below. It is a thing. At this time, a pen tip-shaped cover 10 is fitted on the outer periphery of the oblique opening portion 2, and the tip of the pen tip-shaped cover 10 uses curved surfaces 10a, 10a on both sides as shown in FIG. Heat seal roll 12,12
Since it is located sufficiently deep between the powder and granules 16, the powder and granules 16 are accommodated in the belt-shaped film 11 without scattering, and the powder and granules 16 are the seal surfaces 14 of the heat seal rolls 12, 12.
Due to 14, the seal portion 15 of the belt-shaped film 11 does not get caught. Further, since the spring and the spring locking pin are not mounted in a protruding state on the outer surface of the body portion of the hopper body 1 and the thin plate lever 3, this is the work for mounting the strip film 11 and the thin plate lever of the hopper body 1. It does not interfere with the opening / closing adjustment work of No. 3 or easily fall off during the packaging work and are packaged together in the bag.

(Effect) As described above, according to the present invention, the lower end of the inverted conical hopper body is cut into a steep slope to form a beveled opening having a sharp tip and an intermediate portion of one side of the hopper body. A rib is projected on the rib, and a leg portion at a substantially central portion of a thin plate-shaped lever formed in a substantially inverted shape on the rib is rotatably pivoted by a pin, and is attached to the thin plate-shaped lever above the rib. In a hopper device for filling powder and granules, which is provided with a lid opening adjusting screw, between the hopper body immediately below the rib and the thin plate lever, the horizontal width dimension of the rib and the horizontal width of the thin plate lever are provided. A coil-shaped spring having a resilient force that is smaller than the width dimension and constantly separates the lid portion below the thin plate lever from the inclined opening portion at the lower end of the hopper body, and the inclined portion at the lower end of the hopper body is interposed. In the opening The tip portion projects downward from the lower end of the oblique opening,
Also, a pen tip-shaped cover formed by forming a curved surface on both sides of the tip portion, and comprising a cylindrical body configured to cover the outer periphery of the inclined opening portion at the lower end of the hopper body by the tip portion and the curved surface is fitted. Therefore, when dropping powder or granules, the tip of the pen tip-shaped cover fitted around the outer periphery of the lower opening of the hopper body is sealed by using curved surfaces on both sides of the hopper as compared with the conventional hopper device. By making the rolls come close enough to each other, the powder and granules from the inside of the hopper body can be secured almost entirely without scattering, even if the properties are such as light weight and easy to float or splatter. It is possible to perform packing without dropping the seal into the strip-shaped film by filling the strip-shaped film with a spring for opening and closing the thin-plate lever and the rib and the thin-plate lever. Since it is formed in a coil shape having a diameter smaller than the width of the rib and is provided between the outer peripheral surface of the body of the hopper body and the thin plate lever at the lower portion of the rib, this is the work of attaching the strip film and the thin plate lever. It does not get in the way of opening and closing adjustment work and filling of powder and granules, and it can be easily dropped like a spring and a spring retaining pin in conventional equipment and packed together with powder and granules. Since it is not necessary to provide spring locking pins on both sides of the thin plate lever, it is possible to reduce the plate thickness of the thin plate lever as much as possible to save materials and reduce costs. It has various effects such as.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view, FIG. 2 is a cutaway side view of the same portion, and FIG. 3 is a side view showing an example of a state of use. FIG. 4 is an explanatory front view showing an example of the positional relationship between the tip of the nib-shaped cover and the peripheral surface of the heat-sealing roll, FIG. 5 is a side view showing an example of the usage state of a conventional hopper device, and FIG. FIG. 4 is an explanatory front view showing an example of the positional relationship between the oblique opening at the lower end of the hopper body and the peripheral surface of the heat seal roll. DESCRIPTION OF SYMBOLS 1 ... Inverted conical cylindrical hopper body, 2 ... Oblique opening part, 3 ... Thin plate lever, 4 ... Rib, 5 ... Pin, 6 ... Leg part, 7 ... Spring, 8 ... Lid part, 9 ... Lid opening adjustment Screw, 10 ... Nib-shaped cover, 10a ... Curved surface, 11 ... Band-shaped film, 12 ... Heat seal roll, 13 ... Recessed portion for containing powder / grain, 14 ... Sealing surface, 15 ... Seal portion, 16 ... Powder / grain object.

Claims (1)

[Scope of utility model registration request] 1. A hopper body having an inverted conical tubular shape is cut at a lower end into a steep slope to form a beveled opening having a sharp tip, and a rib is provided at an intermediate portion of one side of the hopper body so as to project. A substantially plate-shaped lever having a substantially inverted shape is pivotally mounted by a pin so as to be rotatable, and an opening cover gap adjusting screw is attached to the thin plate-shaped lever above the rib. In a hopper device for powder / grain filling, between the hopper body immediately below the rib and the thin plate lever, the horizontal width dimension of the rib and the diameter smaller than the horizontal width dimension of the thin plate lever, and always the A coil-shaped spring having an elastic force is provided to separate the lower lid portion of the thin plate lever from the oblique opening portion of the lower end of the hopper body, and the tip end portion is formed in the oblique opening portion of the lower end of the hopper body. Below the bottom edge And a curved surface is formed on both sides of the tip, and the tip and the curved surface are fitted with a pen tip-shaped cover made of a cylindrical body configured to cover the outer periphery of the oblique opening at the lower end of the hopper body. A hopper device for filling powders and granules characterized by