JPH10113928A - Hopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed a molding material into a molding material feed device without generating dust and reduce industrial waste. SOLUTION: A through-hole 2 opening on both of upper and lower faces is formed on a hopper main body 1, and one opening of the through-hole 2 is formed as a container installing section 3, while the other opening of the through-hole 2 is formed as a molding material feed section 4 of funnel shape having its diameter getting smaller as being closer to an outlet. A device mounting section for mounting a molding material feed device 5 of a molding device is provided on the side on which the molding material feed section 4 of the hopper main body 1 is formed. A container storing section 3 is set removably on a mouth section 8 of the upper section of a container 7 in which a molding material 12 is stored. The container 7 in which the molding material 12 is stored can be mounted on the molding material feed device 5 in a cassette-like manner, and when the container 7 is empty, the hopper main body can be taken out of the container 7 and reused.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hopper used for supplying a molding material contained in a container to a molding device.

[0002]

2. Description of the Related Art In resin molding using an injection molding apparatus, a compression molding apparatus, or the like, a molding material such as a thermosetting resin prepared in a granular form such as a granular form is used. The supply of the molding material to the molding material supply device of these molding devices is performed by putting the molding material into a hopper of the molding material supply device from a packing bag or a packing case used for transporting the molding material. General.

[0003]

However, when the powdery and granular molding material is charged into the hopper of the molding material supply device as described above, the dust rises up when the molding material is charged, and the work around the molding material supply device is performed. There is a problem that the environment may be deteriorated, and there is a possibility that dust of the molding material adheres to an insert product (for example, a semiconductor element) used for molding and molding defects may occur. In addition, packing bags used for transporting molding materials can be taken out by opening the opening and the molding material can be taken out. As was disposable.

The present invention has been made in view of the above points, and provides a hopper capable of supplying a molding material to a molding material supply device without generating dust and reducing industrial waste. It is intended to do so.

[0005]

A hopper according to the present invention is provided with a through hole 2 which is opened on both upper and lower surfaces in a hopper main body 1, and one of the openings of the through hole 2 is formed as a container mounting portion 3 and a through hole is formed. The other opening of the hole 2 is formed as a funnel-shaped molding material supply unit 4 whose diameter decreases toward the outlet, and a molding material of a molding apparatus is formed on the surface of the hopper body 1 on which the molding material supply unit 4 is formed. The apparatus is characterized in that a device mounting portion 6 for mounting on the supply device 5 is provided, and the container mounting portion 3 is detachably attached to the upper opening 8 of the container 7 containing the molding material 12.

The invention according to claim 2 is characterized in that the molding material supply section 4 of the hopper body 1 is provided with a shutter 9 for opening and closing the outlet of the molding material supply section 4. The invention according to claim 3 is characterized in that a female screw 11 to be screwed with a male screw 10 provided on the outer periphery of the mouth 8 on the upper portion of the container 7 is formed on the inner periphery of the container mounting portion 3 of the hopper body 1. It is assumed that.

The invention according to a fourth aspect is characterized in that the outlet 4a of the molding material supply section 4 is formed at a position shifted from the center of the opening of the container mounting section 3 of the hopper body 1. Things.

[0008]

Embodiments of the present invention will be described below. The hopper body 1 is made of a resin molded product such as polyacetal or a metal processed product such as a stainless steel material and has a rectangular parallelepiped outer shape. The hopper body 1 is provided with through-holes 2 that are open on two opposing upper and lower surfaces. It is. One opening of the through hole 2 is formed as a large-diameter circular container mounting portion 3, and a female screw 11 is provided on the inner periphery. The other opening of the through hole 2 is formed as a funnel-shaped molding material supply unit 4 whose inner diameter becomes smaller toward the outlet 4a. Molding material supply unit 4
The inclination angle of the funnel-shaped inclined surface is preferably 40 to 60 °.

A shutter 9 is provided so as to pass between the opposing side surfaces of the hopper body 1 and cross the outlet 4a of the molding material supply unit 4. Locking pieces 9a and 9b are provided at both ends in the longitudinal direction of the shutter 9 so as to be bent. The locking pieces 9a and 9b abut on the side surface of the hopper body 1 to lock the shutter 9 longitudinally. It is slidable in the direction. The shutter 9 is provided with an opening / closing opening (not shown). By sliding the shutter 9 so that the opening / closing opening matches the outlet 4a, the molding material supply unit 4 is opened.
The outlet 4a of the molding material supply unit 4 is closed by opening the outlet 4a and sliding the shutter 9 so that the opening and closing opening do not coincide with the outlet 4a.

Further, the molding material supply section 4 of the hopper body 1
The device mounting portion 6 is provided to protrude from the surface forming the outlet 4a of the device. The apparatus mounting section 6 is disposed so as to cover the shutter 9 and is fixed to the hopper body 1 with screws. The outlet 4a of the molding material supply section 4 is opened through the apparatus mounting section 6. On both side surfaces of the device mounting portion 6, slide locking pieces 15 are protruded.

On the other hand, the container 7 is formed of a plastic poly-container such as polyethylene or polyethylene terephthalate, and a mouth 8 is provided on the upper part thereof. The mouth 8 is formed in a cylindrical shape, and a male screw 10 is provided on the outer periphery of the mouth 8. The female screw 11 of the container mounting portion 3 of the hopper main body 1 is formed so as to be screwable with the male screw 10 of the mouth 8 of the container 7. The shoulder of the container 7 is 40-60 °
It is inclined at an angle. The container 7 is filled with a granular resin such as a granular resin, or a powder, or a mixture of a granular resin and a powder resin.
The female screw 17 on the inner circumference of the cap lid 16 is screwed into the cap 8 so that the cap lid 16 is attached to the mouth 8, and the opening of the mouth 8 is closed with the cap lid 16 so that the inside of the container 7 can be sealed. It is. As described above, since the molding material 12 can be sealed in the container 7, foreign substances can be prevented from being mixed into the molding material 12, and nitrogen gas or the like is sealed in the container 7 to perform nitrogen purge. It is easy to do. Further, by forming the container 7 to be transparent or translucent, it is easy to check the contents and the remaining amount, and it is preferable that the surface of the plastic container 7 is subjected to an antistatic treatment.

The present invention can be applied to a molding material supply device 5 of an arbitrary molding device such as a transfer molding device, an injection molding device, and a compression molding device. FIGS. 1 to 3 and FIG. 1 shows a molding material supply device 5 for supplying a molding material 12 to a molding die of a molding device. That is, in the drawing, reference numeral 20 denotes a base plate, which is supported and fixed above the base 21 of the molding material supply device 5 by the support 22. Base plate 2
The molding material measuring device 23 is attached to the upper surface of the zero.

The molding material measuring device 23 is formed as shown in FIG. 5 by providing a measuring rotor 45 in a circular cavity 49 of a casing 44, and a measuring concave portion 46 is formed on the outer periphery of the measuring rotor 45. I have. The measuring rotor 45 is connected to the rotary actuator 25 via the coupling 24.
And the measuring concave portion 46 is driven to rotate at an angle in a range between a position facing the inlet 47 on the upper surface of the casing 44 and a position facing the outlet 48 on the lower surface of the casing 44. The molding material 12 is used as an auxiliary hopper 33 described later.
When the measuring recess 46 of the measuring rotor 45 faces the inlet 47, the molding material 12 is filled into the measuring recess 46 from the inlet 47. When the measuring rotor 45 is rotated, only the molding material 12 filled in the measuring recess 46 is sent to the outlet 48 and discharged from the outlet 48, and the measuring recess 4 is discharged.
The amount of the molding material 12 measured at 6 can be discharged from the outlet 48.

Thus, the measuring recess 4 of the measuring rotor 45 is
The molding material 12 measured at 6 is discharged from the chute 26 provided on the lower surface of the molding material measuring device 23 below the outlet 48, and the molding material 12 discharged from the chute 26 is discharged from the chute 26. Is placed in a receiving tray 27 disposed below the receiving tray. Receiving square 27
Is attached to the tip of the moving plate 28, and the moving plate 28 is driven by a cylinder device or the like so as to advance from the position shown in FIG. The receiving plate 27 is provided with a shutter plate 30 slidably driven by a cylinder device 29 so that the opening on the lower surface can be opened and closed. The moving plate 28 is advanced in the direction of the arrow in FIG. Is placed above the molding die, the cylinder device 29 is operated to release the shutter plate 30.
Is slid to open an opening on the lower surface of the receiving cell 27, so that the molding material 12 is supplied from the receiving cell 27 to a molding die and supplied.

A pedestal plate 32 is mounted on the upper surface of the material weighing device 23, and an auxiliary hopper 33 is mounted on the pedestal plate 32. The auxiliary hopper 33 is provided with a through-hole 34 penetrating vertically and is made of a resin molded product such as Duracon.
Are attached to the pedestal plate 32 by bolts 38. The lower portion of the through hole 34 is formed as a molding material charging portion 36 whose diameter becomes smaller toward the lower end, and the outlet 36a at the lower end of the molding material charging portion 36 passes through the mounting plate 35 and the pedestal plate 32 and is formed above the molding material measuring device 23. It is open. The auxiliary hopper 33 has a shutter 37 so as to cross the outlet 36a of the molding material charging section 36.
Is provided. Locking pieces 37a and 37b are provided at both ends in the longitudinal direction of the shutter 37 so as to be bent. The locking pieces 37a and 37b abut on the side surfaces of the auxiliary hopper 33 and are locked. The shutter 37 is slidable in this manner, and by sliding the shutter 37 in this way, the outlet 36a of the molding material charging section 36 is opened and closed. Further, a hopper fixing plate 39 is attached to the upper surface of the auxiliary hopper 33, and guide rails 4 are provided on both sides of the upper surface of the hopper fixing plate 39.
0 and 40 are attached. Each guide rail 40, 40
Is formed to have a substantially inverted L-shaped cross section by providing a lock receiving piece 41 over the entire length on the upper portion of the inner surface thereof. The through hole 34 of the auxiliary hopper 33 is opened at the upper surface of the auxiliary hopper 33 through the hopper fixing plate 39.

The molding material 12 is stored in the container 7 and transported while being sealed with the cap lid 16. When supplying the molding material 12 from the container 7 to the molding material supply device 5, first, As shown in FIG. 6A, the cap lid 16 is turned to open the cap lid 1 from the mouth 8 of the container 7.
Then, the hopper body 1 is attached to the mouth 8 of the container 7. As shown in FIG. 6B, the hopper main body 1 is attached to the container 7 by rotating the hopper main body 1.
The female screw 11 can be screwed into the male screw 10 of the mouth portion 8. At this time, the hopper body 1
The outlet 4 a of the molding material supply unit 4 is closed by a shutter 9.

After the hopper body 1 is attached to the mouth 8 of the container 7 as described above, the container 7 is turned upside down as shown in FIG. Since the outlet 4a of the molding material supply unit 4 of the hopper body 1 is closed by the shutter 9, when the container 7 is turned upside down and turned upside down, the molding material 12 in the container 7 does not flow out of the opening 8. Absent. Then, the device mounting portion 6 of the hopper body 1 is slid and inserted between the guide rails 40, 40 provided at the upper end of the auxiliary hopper 33 of the molding material supply device 5,
As shown in FIG. 2, the container 7 and the hopper main body 1 are mounted on the molding material supply device 5 by locking the slide locking pieces 15 of the device mounting section 6 with the locking receiving pieces 41 of the guide rails 40, 40. . In FIG. 1, reference numeral 43 denotes a stopper provided on the hopper fixing plate 39,
The device mounting portion 6 inserted between 0 and 40 is brought into contact with and positioned. Thus, the container 7
The hopper comprising the hopper body 1 and the hopper body 1 can be attached to the molding material supply device 5. The shutter 9 of the hopper body 1 is pulled and slid to open the outlet 4 a of the molding material supply unit 4, and the container 7 is opened. The molding material 12 housed in the inside of the
The molding material 12 can be dropped into the molding material supply device 5 from the outlet 4a of the molding material supply unit 4 and supplied.

By attaching the hopper body 1 to the container 7 containing the molding material 12 in this manner, the container 7 can be mounted on the molding material supply device 5 in a cassette manner. This prevents the dust from rising up as in the case where the molding material 12 is supplied from the container or the packing case. When the container 7 is empty, the device mounting portion 6 inserted between the guide rails 40, 40 is pulled out, the container 7 is removed from the molding material supply device 5 together with the hopper main body 1, and after removing the hopper main body 1 from the container 7, Reattach the cap lid 16 to the container 7, return it to the manufacturer of the molding material 12, and again
It is used for containing and transporting the molding material 12. As described above, the container 7 can be repeatedly used as a passage for transporting the molding material 12, and can be used for industrial waste without disposable like a conventional packing bag or packing case. The occurrence can be reduced.

Here, in the example shown in the figure, the hopper body 1 is mounted on the auxiliary hopper 33, and the molding material 12 supplied through the hopper body 1 is temporarily stored in the auxiliary hopper 33, Shutter 9 of hopper body 1
Is closed, the shutter 37 of the auxiliary hopper 33 is opened, and the auxiliary hopper 33 is supplied to the molding material measuring device 23.
The molding material 12 is transferred from the hopper body 1 to the molding material measuring device 23.
Is directly supplied, the molding material 12 in the container 7 is
Is added to the molding material 12 filled in the measuring concave portion 46 of the measuring rotor 45 of the molding material measuring device 23 through the through hole 2 of the hopper body 1, and the weight of the molding material 12 added in this way is It varies according to the amount of the molding material 12 in the container 7. Therefore, the amount of the molding material 12 measured by the molding material measuring device 23 varies depending on the amount of the molding material 12 remaining in the container 7, and the measurement accuracy is deteriorated. Therefore, an auxiliary hopper 33 is provided so that the molding material 12 remaining in the container 7 is prevented from affecting the molding material measuring device 23 by the auxiliary hopper 33. Depending on the amount of the molding material 12 remaining in the container 7, The amount of the molding material 12 measured by the molding material measuring device 23 is prevented from fluctuating.

In the example shown in the figure, a pair of auxiliary hoppers 33 and molding material measuring devices 23 are provided to form the molding material supply device 5, and a pair of containers 7 to which the hopper main body 1 is attached can be used. It is like that. By allowing the pair of containers 7 to be mounted in this way, after one container 7 is empty, the molding material 12 is removed from the other container 7.
The supply of the molding material 12 is not interrupted when the replacement of the container 7 is performed.

FIG. 7 shows another embodiment of the present invention. In this embodiment, when a through-hole 2 is provided in a hopper body 1, a molding material supply unit is positioned with respect to the center of an opening of a container mounting unit 3. The outlet 4a of the hopper 4 is formed eccentrically so that the center of the outlet 4a of the hopper 4 is shifted. When the center of the opening of the container mounting portion 3 and the center of the outlet 4a of the molding material supply portion 4 coincide with each other, when the hopper body 1 is attached to the container 7 and the molding material 12 is supplied from inside the container 7, the container 7 A bridge is formed in the powdery and granular molding material 12 in the inside, so that the molding material 12 is liable to flow, but as described above, the center of the opening of the container mounting portion 3 and the outlet 4a of the molding material supply portion 4
Of the molding material 1 in the container 7 by shifting the center of
2 can prevent such a bridge from occurring, and can smoothly flow out the molding material 12 in the container 7, and the molding materials 12 having different particle diameters flow out separately. That can be prevented. Further, by shifting the center of the opening of the container mounting portion 3 and the center of the outlet 4a of the molding material supply portion 4 in this manner, the weight of the molding material 1 in the container 7 can be reduced by the molding material measuring device 23.
Of the molding material 12 measured by the molding material measuring device 23 according to the amount of the molding material 12 remaining in the container 7 similarly to the case where the auxiliary hopper 33 is provided. The amount can be prevented from fluctuating.

[0022]

As described above, according to the present invention, the hopper body is provided with through-holes that are opened on both upper and lower surfaces, one of the through-holes is formed as a container mounting portion, and the other of the through-holes is formed with the other opening. Forming as a funnel-shaped molding material supply unit whose diameter becomes smaller at the outlet, a device mounting part for mounting to the molding material supply device of the molding device is provided on the surface of the hopper body on the side where the molding material supply unit is formed. Since the container mounting portion is detachably attached to the upper mouth portion of the container containing the molding material, the hopper body is attached to the container containing the molding material, and the device mounting portion of the hopper body is attached to the molding material supply device. By attaching the container to the molding material supply device, the container containing the molding material can be mounted on the molding material supply device in a cassette manner. The molding material in the container are those which can be supplied to the molding material supply device, in which things like dust soar disappears as in the case of introducing the molding material from the packing bag and packing case. Also, when the container is empty, the hopper body can be removed from the container and the container can be used again for containing and transporting the molding material, and used repeatedly as a pass for transporting the molding material It is possible to reduce industrial waste.

According to a second aspect of the present invention, a shutter for opening and closing the outlet of the molding material supply unit is provided in the molding material supply unit of the hopper body. By closing the outlet of the unit with a shutter, the inside of the container can be sealed, and when the container with the hopper body is mounted on the molding material supply device, when the container is turned upside down, the molding material in the container is Will not jump out.

According to a third aspect of the present invention, a female screw is formed on the inner periphery of the container mounting portion of the hopper body so as to be screwed with a male screw provided on the outer periphery of the upper opening of the container. The hopper body can be attached to the container by using a male screw provided in the container to cover the container. Further, according to the invention of claim 4, the outlet of the molding material supply section is formed at a position shifted from the center of the opening of the container mounting section of the hopper main body. When the molding material is supplied from the container, the molding material in the container is less likely to form a bridge,
This allows the molding material in the container to flow out smoothly.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an embodiment of the present invention.

FIG. 2 is a side view showing an example of the embodiment of the present invention.

FIG. 3 is a plan view showing an example of an embodiment of the present invention.

FIG. 4 is a reduced front view showing an example of the embodiment of the present invention.

FIG. 5 is a cross-sectional view of a molding material measuring device according to an example of an embodiment of the present invention.

FIG. 6 shows an example of an embodiment of the present invention,
(A), (b), (c) is a reduced front view showing a use state.

FIG. 7 is a front view of a hopper body according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hopper main body 2 Through-hole 3 Container mounting part 4 Molding material supply part 4a Outlet 5 Molding material supply device 6 Device mounting part 7 Container 8 Mouth 9 Shutter 10 Male screw 11 Female screw 12 Molding material

Claims (4)

[Claims] 1. A hopper body having through-holes that open on both upper and lower surfaces, one of the through-holes being formed as a container mounting portion, and the other of the through-holes having a funnel shape whose diameter becomes smaller toward the outlet. Formed as a molding material supply unit,
On the side of the hopper body on which the molding material supply section is formed, a device mounting section is provided for mounting on the molding material supply apparatus of the molding apparatus, and the container mounting section is attached to and detached from the upper mouth of the container containing the molding material. A hopper characterized by being freely mounted. 2. The hopper according to claim 1, wherein a shutter for opening and closing an outlet of the molding material supply unit is provided in the molding material supply unit of the hopper body. 3. The container according to claim 1, wherein a female screw is formed on an inner periphery of the container mounting portion of the hopper main body, the female screw being screwed with a male screw provided on an outer periphery of an upper opening of the container. Hopper. 4. The molding material supply section according to claim 1, wherein the outlet of the molding material supply section is formed at a position shifted from the center of the opening of the container mounting section of the hopper body. Hopper.