JP3462190B2 - Extrusion molding equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion molding apparatus equipped with a supporting device for supporting an extruder and a die on the working floor side, and more specifically to a specific structure of the supporting device. is there.

[0002]

2. Description of the Related Art Conventionally, there is an extrusion molding apparatus configured as follows.

That is, an extruder for extruding a resin that has been heated and melted by an extrusion molding device and a resin which is detachably fixed to the extruder and extruded from the extruder can be passed to form a long molded product. And a supporting device that is supported on the work floor side and that supports the extruder and the die.

Then, when the resin which has been heated and melted is extruded and supplied toward the die by the extruder, the resin passes through the die to form a long molded article such as a tubular shape. .

On the other hand, when disassembling and assembling the extrusion molding apparatus when changing the resin to another type of resin or at the time of maintenance and inspection, first, the mutual fixation of the extruder and the die is released. To separate them from each other, then
After these extruders and dies are individually worked such as cleaning, they are assembled to each other in their original state.

[0006]

By the way, in the prior art,
When disassembling the extrusion molding device, it is necessary to support this in order to prevent any of these from accidentally falling off due to the release of mutual sticking of the extruder and the die, Therefore, the disassembling work of the extrusion molding apparatus is complicated accordingly.

Moreover, when the extrusion molding apparatus is disassembled, one of the extruder and the die is once placed on the work floor side, and the relative position between the extruder and the die is determined for each disassembly operation. Therefore, when the next assembling work of these, the positioning work for each other becomes complicated, and the assembly work after disassembling the extrusion molding apparatus becomes complicated. is there.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an extrusion molding apparatus which facilitates the disassembly and assembly work of an extruder and a die.

[0009]

The extrusion molding apparatus of the present invention for solving the above problems is as follows.

The invention of claim 1 is, as illustrated in all the drawings, an extruder 4 for extruding a resin 2 which has been heated and melted, and an extruder 4 which is detachably fixed to the extruder 4 and extruded from the extruder 4. An extrusion molding apparatus comprising a die 7 that allows the molded article 6 to be molded by passing the resin 2 and a supporting device 9 that is supported on the work floor side 8 and that supports the extruder 4 and the die 7,

The support device 9 is pivotally supported on the base 28 so as to be rotatable (B) about a base 28 supported on the work floor 8 and a pivot 29 extending in the vertical direction. The rotating arm 30 extends horizontally outward from the base 28 side, and is supported by the rotating arm 30 so as to be movable (C) along the longitudinal direction of the rotating arm 30. And the movable bodies 32, 33 that are
3, the extruder 4 is supported, while the base 28 supports the die 7.

In addition to the invention of claim 1, the invention of claim 2 is, in addition to the invention of claim 1, located the die 7 substantially on the pivot 29.

The invention of claim 3 is, in addition to the invention of claim 1 or 2, as illustrated in FIGS. 1 to 3, the extruder 4 is a screw type upstream extruder for extruding the resin 2. 12, the upstream extruder 12 is detachably fixed to the upstream extruder 12, and the die 7 is detachably fixed to the upstream extruder 12 to receive the resin 2 extruded from the upstream extruder 12. In an extrusion molding apparatus equipped with a positive displacement downstream-side extruder 14 for extruding toward the die 7,

The upstream side extruder 12 and the downstream side extruder 14
And the downstream side extruders 12 and 14 are separately attached to the movable body 3 so as to be movable (C) along the longitudinal direction of the rotary arm 30.
It is supported by 2, 33.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment)

1 to 3 show a first embodiment.

In FIG. 1, reference numeral 1 is an extrusion molding device,
This extrusion molding apparatus 1 has a hopper 3 capable of storing a thermoplastic powdery resin 2, and a hopper 3 which is detachably supported to heat and melt the resin 2 supplied from the hopper 3 and to pressurize the resin 2. Extruder 4 that can be extruded by
A die 7 capable of continuously extruding a long shaped product 6 such as a tubular shape by allowing the resin 2 extruded from the extruder 4 to pass through the extruder 4 and detachably fixed to each other by a fixing tool 5. , A support device 9 supported by the work floor 8 which is a fixed side, and detachably supporting the hopper 3, the extruder 4, the fixing tool 5, and the die 7. In addition, an arrow A in each drawing indicates the direction of pushing out the resin 2.

The extruder 4 is a screw type upstream extruder 12 for extruding the resin 2 which has been heated and melted, and the upstream extruder 12 is detachably fixed to the upstream extruder 12 by another fastener 13 and the above The die 7 and the fastener 5 described above
And a positive displacement downstream extruder 14 that pushes the resin 2 toward the die 7 while receiving the resin 2 that is detachably fixed by the above and is extruded from the upstream extruder 12.

The upstream extruder 12 has an extrusion screw 18 which is rotatable around a horizontally extending axis 17.
And an electric motor 21 fixed to one axial end of the extruder main body 19 via a gear type speed reducer 20.

The downstream extruder 14 is a gear pump type extruder main body 24 having a resin inlet 2 and an extrusion outlet on the same axis 17 as described above, and a speed reducer fixed to the extruder main body 24. And an attached electric motor 25.

The hopper 3 communicates with one end of the extruder body 19 of the upstream extruder 12, and the extruder body 19 is connected to the hopper 3.
The other end of the resin is an extrusion port for the resin 2, and this extrusion port communicates with the receiving port of the extruder main body 24 of the downstream side extruder 14.
The extrusion port of the extruder body 24 is communicated with the inside of the die 7.

The supporting device 9 is pivotally supported on the base 28 so as to be rotatable (B) about a base 28 supported on the work floor 8 and a pivot 29 extending vertically. The rotating arm 30 extends substantially linearly in the horizontal direction from the base 28, and the rotating arm 30 is movable (C) along the longitudinal direction of the rotating arm 30.
With respect to the pair of movable bodies 32 supported by rails 31,
33, and a screw jack type lifting table 34 supported so as to be movable up and down (D) with respect to one of the movable bodies 32, 33.

The movable bodies 32 and 33 are arranged in front of and away from each other in the longitudinal direction of the rotating arm 30, and the front and rear movable bodies 32 and 33, which are closer to the base 28, are movable forward. The rear side of the body 32 is a rear movable body 33, and the lifting table 34 is supported by the rear movable body 33.

The axes 17 of the extruder bodies 19 and 24 of the extruder 4 extend in parallel to the longitudinal direction of the rotating arm 30, and the extruder 4 is arranged in the axial direction of the axis 17. Each end side is supported on both sides by the front and rear movable bodies 32 and 33. More specifically, the upstream extruder 12 is supported by the rear movable body 33 via the lifting platform 34, and the downstream extruder 14 is supported by the front movable body 32. Further, the die 7 is positioned substantially on the pivot axis 29,
It is supported on the upper end of the base 28, and each of the supports is detachable with a fastener.

In the above case, the extruder 12 upstream of the extruder 4 is used.
The downstream extruder 14 and the downstream extruder 14 are integrally movable along the longitudinal direction of the rotating arm 30 while being supported by the movable bodies 32 and 33. Even when they are separated from the side extruder 14, they are movable (C) in parallel with each other along the longitudinal direction of the rotating arm 30 while being separately supported by the movable bodies 32 and 33. It is supported by the rotating arm 30.

The above-mentioned upstream side extruder 12 and downstream side extruder 14
When and are separated from each other, the upstream extruder 12 is
It is rotatable (E) around another pivot shaft center 36 extending in the vertical direction by the pivot shaft of the lift 34.

By the extrusion molding apparatus 1, the molded product 6 is produced.
When molding the resin, first, the resin 2 is charged into the hopper 3, and the upstream extruder 12 and the downstream extruder 14 of the extruder 4 are driven. Then, the resin 2 supplied from the hopper 3 is transferred to the upstream extruder 1
It is heated and melted at 2, and is pressurized and extruded toward the downstream extruder 14. The resin 2 extruded from the upstream extruder 12 is further pressurized by the downstream extruder 14 to a sufficient pressure and extruded toward the die 7. Then, the resin 2 passes through the die 7 and is extruded, whereby the molded product 6 is continuously molded.

In the above case, since the extruder main body 24 of the downstream side extruder 14 is of a positive displacement type, the accuracy of the supply amount (cc / min) of the resin 2 to the die 7 per unit time is improved,
As a result, the dimensional accuracy such as the diameter of the molded product 6 molded by the die 7 is improved.

According to the above structure, the resin 2 which is heated and melted
An extruder 4 for extruding the resin, a die 7 that is detachably fixed to the extruder 4 and allows the resin 2 extruded from the extruder 4 to pass therethrough to form a long molded product 6, and a working floor side In an extrusion molding apparatus, which is supported by 8 and includes a supporting device 9 that detachably supports the extruder 4 and the die 7,

The support device 9 is pivotally supported on the base 28 so as to be rotatable (B) about a base 28 supported on the work floor 8 and a pivot 29 extending in the vertical direction. The rotating arm 30 extends horizontally outward from the base 28 side, and is supported by the rotating arm 30 so as to be movable (C) along the longitudinal direction of the rotating arm 30. And the movable bodies 32, 33 that are
3 includes an upstream extruder 12 and a downstream extruder 1 of the extruder 4.
4, while supporting the die 7 on the base 28.

When disassembling the extrusion molding apparatus 1, first, the fixing of the extruder 4 and the die 7 is released by operating the fixing tool 5, and the upstream side of the extruder 4 is released. The sticking between the extruder 12 and the downstream side extruder 14 is released by operating the other fixing tool 13, and the upstream side extruder 12 and the downstream side extruder 14 of the extruder 4 and the die 7 are mutually separated. Separate (solid lines in Figures 2 and 3).

In this case, as described above, the upstream side extruder 12 and the downstream side extruder 14 of the extruder 4 are respectively movable bodies 3.
2, 33 are supported by the rotating arm 30 so as to be movable (C) along the longitudinal direction of the rotating arm 30, and the rotating arm 30 is pivotally supported on the base 28. The die 7 is rotatable about a center 29, and the die 7 is supported by the base 28.

Therefore, as described above, the upstream extruder 12 and the downstream extruder 14 of the extruder 4 and the die 7 are released from the sticking of each other, and the upstream extruder 12 of the extruder 4 is released. And the downstream extruder 14 separately from the rotating arm 3
0 (solid line in FIGS. 2 and 3), the rotating arm 30 is rotated, and the upstream extruder 1 is also used.
2 may be rotated around the other pivot axis 36 (one-dot chain line in FIGS. 2 and 3) to separate the upstream extruder 12, the downstream extruder 14, and the die 7 from each other. Also,
These 12, 14, and 7 are maintained to be supported by the respective component parts 28 to 34 of the supporting device 9, respectively.

Therefore, when the extrusion molding apparatus 1 is disassembled, it is prevented that one of the extruder 4 and the die 7 is unintentionally dropped due to release or separation of the sticking of the extruder 4 and the die 7. From that, the above-mentioned extrusion molding apparatus 1
The disassembly work of can be done easily.

After the decomposition of the extrusion molding apparatus 1 described above, as described above, the upstream extruder 12 and the downstream extruder 14 of the decomposed extruder 4 and the die 7 are the same as those of the supporting apparatus 9 described above. It is maintained as it is supported by each of the component parts 28 to 34, and in each case, a predetermined posture and a predetermined relative position are maintained.

Therefore, when assembling the extrusion molding apparatus 1 after disassembling, the rotating arm 30 is simply rotated and the longitudinal direction of the rotating arm 30 is reversed, contrary to the disassembling operation. If the upstream side extruder 12 and the downstream side extruder 14 of the extruder 4 are moved along the above, the upstream side extruder 12 and the downstream side extruder 14 of the extruder 4 and the die 7 can be accurately aligned with each other. Positioning can be performed, and as a result, assembling work after disassembling the extrusion molding apparatus 1 can be facilitated.

Further, as described above, the die 7 is located substantially on the pivot 29.

Therefore, when the extrusion molding apparatus 1 is disassembled, the upstream extruder 12 and the downstream extruder 1 of the extruder 4 are disassembled.
4 is moved along the rotating arm 30 so as to be separated from the base 28, and the rotating arm 30 may be rotated to any position around the pivot 29 (see FIG. 2). , 3 solid line), and thereafter, the upstream side extruder 12 and the downstream side extruder 14 of the extruder 4 are moved along the rotating arm 30 so as to face the base 28 side. 4 will face the die 7 in a straight line.

Therefore, the assembling work after disassembling the extrusion molding apparatus 1 can be made easier accordingly.

Further, as described above, the extruder 4 comprises the screw type upstream extruder 12 for extruding the resin 2.
The resin 2 is removably fixed to the upstream extruder 12 and is removably fixed to the die 7 to receive the resin 2 extruded from the upstream extruder 12, while the resin 2 is fixed to the die 7. In the extrusion molding apparatus provided with the positive displacement extruder 14 of the positive displacement type,

The above-mentioned upstream extruder 12 and downstream extruder 14
And the downstream side extruders 12 and 14 are separately attached to the movable body 3 so as to be movable (C) along the longitudinal direction of the rotary arm 30.
It is supported by 2, 33.

Therefore, in order to improve the accuracy of the supply amount of the resin 2 to the die 7 per unit time, the above-mentioned positive displacement type downstream side extruder 14 is provided to obtain a molded product 6 having high dimensional accuracy. Even in such a case, the extrusion molding apparatus 1
When the upstream extruder 12 and the downstream extruder 14 of the extruder 4 are separated from each other in the disassembling operation of
2 and 14 are maintained while being supported by the rotating arm 30.

Therefore, the extruder 12 on the upstream side of the extruder 4 is
Therefore, the downstream extruder 14 can be easily disassembled and assembled, that is, even when the molded product 6 having high dimensional accuracy is obtained, the extrusion molding apparatus 1 can be easily disassembled and assembled.

In the illustrated example, the die 7 is provided with another extruder 42 having substantially the same structure as the above, and another supporting device 43 sharing the base 28.

Although the above is based on the illustrated example, the extruder 4
May be configured by only one of the upstream extruder 12 and the downstream extruder 14, and the elevating table 34 may not be provided.

The following figures show the second embodiment. This embodiment has many points in common with the first embodiment in terms of configuration and operational effects. Therefore, common reference numerals will be given to the drawings, common description will be omitted, and different points will be mainly described. Further, the configurations of the respective parts in the respective embodiments may be variously combined in view of the problems and the effects of the present invention.

(Second Embodiment)

4 and 5 show a second embodiment.

According to this, the base 28 is provided with the pair of support shafts 38 and 39. The axes of the support shafts 38 and 39 are respectively referred to as pivot support shaft centers 29, and the rotating arms 30 are pivotally supported on the support shafts 38 and 39 respectively.

Of the two rotating arms 30, 30, one of the rotating arms 30 is movable (C) along the longitudinal direction of the rotating arm 30, and the upstream extruder 12 of the extruder 4 is attached to the rotating arm 30. Is supported via the movable body 32 and the lifting table 34, and the rotary arm 30 is movable (C) along the longitudinal direction of the other rotary arm 30 on the downstream side of the extruder 4. The extruder 14 is supported, and the die 7 is supported by a support shaft 39 that pivotally supports the other rotating arm 30.

According to the above construction, the rotating arms 3 are rotated around the pivots 29, 29 which are separate from each other with respect to the base 28.
0 is rotatably supported so that one of the rotating arms 30 supports the upstream extruder 12, and the other rotating arm 30 supports the downstream extruder 14. is there.

Therefore, during the disassembling operation of the extrusion molding apparatus 1, the rotation of each of the rotation arms 30 separates the upstream extruder 12 and the downstream extruder 14 from each other so as not to sufficiently interfere with each other. Therefore, the degree of freedom in work during disassembly work is improved accordingly.

[0054]

The effects of the present invention are as follows.

According to the first aspect of the present invention, an extruder for extruding a resin that has been heated and melted, and a resin that is detachably fixed to the extruder and that is extruded from the extruder can be passed through to form a molded article. In a die and an extrusion molding apparatus provided with a supporting device that is supported on the work floor side and that supports the extruder and the die,

The support device is pivotally supported on the base supported on the work floor side and the base so as to be rotatable about a pivot axis extending in the vertical direction. A rotary arm extending horizontally outward from the rotary arm, and a movable body supported by the rotary arm so as to be movable in the longitudinal direction of the rotary arm. While supporting the die, the die is supported on the base.

Here, when disassembling the extrusion molding apparatus, first, the sticking between the extruder and the die is released by operating the fixing tool to separate the extruder and the die from each other. .

In this case, as described above, the extruder is supported by the movable arm so as to be movable along the longitudinal direction of the movable arm, and the movable arm is the base. It is rotatable around a pivot axis with respect to the base, and the die is supported by the base.

Therefore, as described above, the fixing of the extruder and the die to each other is released, and the extruder is moved along the rotating arm, or the rotating arm is rotated. Then, even if the extruder and the die are separated from each other, they are still supported by the respective components of the supporting device.

Therefore, when disassembling the extrusion molding apparatus, it is possible to prevent any of these from accidentally dropping due to release or separation of the sticking of the extruder and the die. Therefore, the disassembling operation of the extrusion molding apparatus can be easily performed.

After disassembling the above-mentioned extrusion molding apparatus, as described above, the extruder and the die after disassembly are
It is maintained as it is supported by each component of the supporting device, and in each case, a predetermined posture and a predetermined relative position are maintained.

Therefore, when assembling work after disassembling the extrusion molding apparatus, simply contrary to the disassembling work,
By rotating the rotating arm and moving the extruder along the longitudinal direction of the rotating arm, the extruder and the die can be accurately positioned relative to each other. Assembly work after disassembling the molding device can be easily performed.

According to a second aspect of the present invention, the die is positioned substantially on the pivot axis.

Therefore, when the extrusion molding apparatus is disassembled,
The extruder is moved along the rotating arm so as to be separated from the base, and even if the rotating arm is rotated to any position around the pivot axis, thereafter,
When the extruder is moved along the rotating arm toward the base side, the extruder will face the die linearly.

Therefore, the assembling work after disassembling the extrusion molding apparatus can be made easier accordingly.

According to a third aspect of the present invention, the extruder is a screw type extruder for extruding the resin, and the upstream extruder is detachably fixed to the die and the die is detachably fixed to the die. While receiving the resin extruded from the upstream side extruder, in the extrusion molding apparatus comprising a positive displacement downstream side extruder that pushes this resin toward the die,

The above-mentioned upstream side extruder and the downstream side extruder are separately movable from each other along the longitudinal direction of the above-mentioned rotating arm so that the above-mentioned upstream and downstream extruders are respectively moved to the above-mentioned movable bodies. Is supported by.

Therefore, in order to improve the accuracy of the amount of resin supplied to the die per unit time, the above-mentioned positive displacement type downstream side extruder is provided to obtain a molded product with high dimensional accuracy. Also, when the upstream side extruder and the downstream side extruder of the extruder are separated from each other in the disassembling operation of the extrusion molding apparatus, these are maintained while being supported by the rotating arm.

Therefore, it is possible to easily disassemble and assemble the upstream side extruder and the downstream side extruder of the above extruder, that is, even when a molded product with high dimensional accuracy is obtained.
The disassembling and assembling work of the extrusion molding device can be done easily.

[Brief description of drawings]

FIG. 1 is an overall side view of an extrusion molding apparatus according to a first embodiment.

FIG. 2 is a side view for explaining the operation when the extrusion molding device is disassembled in the first embodiment.

FIG. 3 is a plan view of what is shown in FIG. 2 in the first embodiment.

FIG. 4 is a diagram corresponding to FIG. 1 in the second embodiment.

FIG. 5 is a side view of what is shown in FIG. 4 in the second embodiment.

[Explanation of symbols]

1 Extrusion molding device 2 resin 4 extruder 5 fasteners 6 molded products 7 die 8 Working floor side 9 Support device 12 Upstream extruder 13 Other fasteners 14 Downstream extruder 17 axis 28 base 29 pivot 30 rotating arm 32 movable body 33 Movable body

Claims (3)

(57) [Claims] 1. An extruder for extruding a resin which has been heated and melted, a die which is detachably fixed to the extruder and which allows the resin extruded from the extruder to pass therethrough to form a molded article, and a work floor. In an extrusion molding apparatus that is supported on the side and that includes a supporting device that supports the extruder and a die, the supporting device includes a base that is supported on the working floor side and a pivot shaft center extending in the vertical direction. A pivot arm that is pivotally supported by the base so as to be freely rotatable, and extends horizontally outward from the base side, and is movable along the longitudinal direction of the pivot arm. An extrusion molding apparatus comprising: a movable body supported by the rotating arm, the movable body supporting the extruder, and the base supporting the die. 2. The extrusion molding apparatus according to claim 1, wherein the die is located substantially on the pivot axis. 3. The extruder, wherein the extruder is a screw type upstream side extruder, and the upstream side extruder is detachably fixed to the upstream side extruder and the die is detachably fixed to the upstream side. In an extrusion molding apparatus including a positive displacement extruder that extrudes the resin toward the die while receiving the resin extruded from the extruder, the upstream extruder and the downstream extruder are separate from each other. 3. The extrusion molding apparatus according to claim 1, wherein the upper and lower extruders are supported by the movable arm so as to be movable along the longitudinal direction of the movable arm.