JPH07156243A - Disassembling device for mold - Google Patents

Abstract

PURPOSE:To rotate respective mold main body sections of an extruder in the state of facing resin flow paths upward without damaging resin outflow holes on the inner faces of lips. CONSTITUTION:When a mold 10 with lips 14 facing the lower side supported by a support mechanism 30, of the mold 10 turnover axial components are installed on respective end faces, and the mold 10 is lifted by a lifting mechanism. The mold 10 is turned over with lips 14 facing upside in the above-said lifting condition. After that, turnover axial components are removed, and separation mechanisms 40 are connected respectively with end faces of respective mold main body sections 11, and respective mold main body sections 11 are slid in the direction of separating one another. Respective mold main body sections are in the state of taking intervals by the arrangement, and rotating mechanisms 50 are actuated in the separated state, and upper sections of respective mold main body sections are rotated in the direction of separating one another. Then, respective mold main body sections are rotated by almost 90 deg., and respective mold main body sections 11 are supported in the state of facing resin flow paths upward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device used for disassembling a sheet mold attached to an extruder, which is manufactured by extrusion molding a synthetic resin sheet, for cleaning or the like. .

[0002]

2. Description of the Related Art For example, a synthetic resin sheet used for laminated glass in which a synthetic resin sheet is sandwiched between a pair of glass plates is usually manufactured by extrusion molding.
The extruder used for such extrusion molding has a T
A die for a sheet such as an L-shaped manifold die or an L-shaped manifold die is mounted, and a molten synthetic resin is filled in the die and extruded into a sheet shape.

When the type of sheet material such as synthetic resin or additive material is changed, the sheet die is removed from the extruder and disassembled, and the resin flow path is cleaned. In addition, when the product type is changed and the thickness of the molded sheet is changed, it is necessary to disassemble the mold and change the gap of the lip as the resin outlet through which the molded product is extruded. is there.

[0004] The disassembling work of the sheet die is usually performed manually. An example of the work procedure is shown in FIG.
It shows in (a)-(h). As shown in FIG. 7A, the sheet mold 10 attached to the tip of the extruder has a pair of rectangular parallelepiped mold body parts 11, and each mold body part 11
The two are connected by bolts 15. Figure 7 (e)
As shown in FIG. 3, resin flow paths 12 extending in the longitudinal direction are provided on the facing surfaces of the respective mold body portions 11. The resin flow path 12 communicates with a resin inlet 13 provided at the center of the upper surface of the mold 10. The lower end of each mold body 11 is formed with a lip 14 that becomes thinner as it goes downward, and the resin flow path 1 is formed by each lip 14.
A resin outlet is formed at the lower end of 2.

The mold 10 removed from the extruder is shown in FIG.
As shown in (a), a wire 91 or the like is hung up and lifted by a crane or the like, and once placed on a pair of sleepers 92. After that, as shown in FIG. 7B, the mold 10 is lifted again, and the worker inverts the mold 10 upside down and places it on the sleeper 92 with the lip 14 facing upward. In this state, as shown in FIG. 7 (c), the wire 91 is removed, and the bolts 15 connecting the mold main body 11 are removed. As shown in FIG. 7 (d), one mold main body 11 is removed. A wire 91 is hung on the other side to lift it up, and it is slid horizontally with respect to the other mold 11 so that an appropriate space is provided.

After that, the wire 91 is removed, and as shown in FIG.
As shown in (e), each mold main body 11 is rotated through 90 ° so that the resin flow path 12 in each mold main body 11 faces upward, and each mold main body part is placed on each sleeper 92. 11
Place it on its side. In this way, the mold 10
When is disassembled, the resin flow path 12 of each mold body 11 facing upward is cleaned.

When the cleaning of each resin flow path 12 is completed, FIG.
As shown in (f), the lip 14 of each mold main body 11 is rotated upward to a standing state, and one mold main body 1
A wire or the like is hung on 1 to be lifted, and is moved so as to be in close contact with the other mold body 11. And FIG.
As shown in (g), the two mold main body portions 11 that are in close contact with each other are connected by bolts 15. After that, a wire or the like is applied to the mold 10 in which the mold main body parts 11 are integrated and is lifted, and as shown in FIG. 7 (h), the mold 10 is turned upside down to remove the lips 14. The lower side is mounted on the extruder.

Thus, the resin flow path 1 in the mold 10
The cleaning work of No. 2 has to be lifted by a crane or the like, and must be carried out by several workers such as turning upside down and laying down each die main body part, resulting in poor work efficiency. .

Japanese Unexamined Patent Publication (Kokai) No. 5-57780 discloses a disassembling device which can easily disassemble the mold 10 removed from the extruder. This disassembling apparatus is provided with a lip 1 of each mold body 11 in a mold 10 removed from an extruder.
A hook is attached to the upper part on the opposite side to 4, and the upper ends of the support arms in the vertical state are fitted to the hooks.
By rotating the mold body 11 through the horizontal direction so as to be in a horizontal state, each of the mold body portions 11 is in a horizontal state in which the resin flow path 12 faces upward.

[0010]

In such a conventional disassembling apparatus, the mold main bodies 11 are connected to each other and are rotated about the lower ends of the support arms in the vertical state. Therefore, the tips of the lips 14 at the bottom of each mold body 11 are brought into a state of being close to each other during rotation. When the resin remains in the resin flow path 12 of the mold 10, if the resin remaining between the lips 14 is solidified, the lip 1
When the four are close to each other, the resin may be pressed against the inner surface of the lip 14 and may be damaged.

Further, since the resin remaining inside the mold 10 acts like an adhesive, a large force is applied to the support arm that rotates each mold body 11. For this reason, it is also necessary to make each support arm strong and prevent damage to each support arm.

Further, each support arm and each mold body 1
Since 1 means that the hooks attached to the respective mold main bodies 11 are simply fitted, there is a risk that the respective mold main bodies 11 will come off from the respective support arms.

The present invention solves such a problem, and an object thereof is to provide a disassembling apparatus which can be easily disassembled without damaging the mold.

[0014]

SUMMARY OF THE INVENTION A mold disassembling apparatus according to the present invention is a supporting mechanism for supporting an extrusion mold having a pair of mold bodies in a state where a resin flow path is in a vertical direction. When,
A separation mechanism that is connected to an end face of each mold body of the mold supported by the support mechanism and slides each mold body away from each other; and a separation mechanism that engages each separated mold body. And a rotation mechanism for rotating each die main body over approximately 90 ° so that the upper portions thereof are separated from each other, and supporting each die main body with the resin flow path facing upward. The above object is achieved thereby.

[0015]

In the mold disassembling apparatus of the present invention, when the mold removed from the extruder is supported by the support mechanism with the resin flow path in the vertical direction, the separating mechanism causes the mold main body part to move. Are respectively connected to the end faces of the mold bodies, and the respective mold body parts are slid in the directions away from each other. As a result, the respective mold body portions are in a state of being spaced from each other, and in such a state, the rotating mechanism is operated to rotate the upper portions of the respective mold body portions in the directions away from each other. And each mold body is almost 90 °
When rotated, the die main body is supported with the resin flow path facing upward.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an example of the disassembling apparatus of the present invention,
2 is a plan view thereof, and FIG. 3 is a side view thereof. The mold disassembling apparatus of the present invention is used for disassembling a mold for a sheet detached from the extruder. As shown in FIG. 7 (e), the sheet mold has a pair of mold main bodies 11 having resin channels 12 provided on the inner surface thereof, which are connected by bolts 15 and flow in from a resin inlet 13. A synthetic resin is filled in the resin flow path 12 and is extruded from a resin outlet formed in a gap between the lips 14.

As shown in FIGS. 1 and 2, the mold disassembling apparatus of the present invention is supported by the support mechanism 30 on which the mold 10 is placed and which supports the mold 10, and the support mechanism 30. The mold 10 has a separating mechanism 40 for separating each mold body 11 and a rotating mechanism 50 for rotating each separated mold body 11, and these are mounted on the base 20. It is installed in.

The support mechanism 30 has a fixed support base 31 arranged on the center of the base 20 in the longitudinal direction. The fixed support base 31 extends in a direction orthogonal to the longitudinal direction of the base 20, and a support roller 31a on which the mold 10 is placed is provided on the upper part thereof. A pair of guide rails 32 extending along the longitudinal direction of the base 20 are arranged on the base 20 on each side of the fixed support 31. On the pair of guide rails 32, a movable support 33
Are installed so that they can slide. Each movable support base 33 is parallel to the fixed support base 31, and
Similar to the fixed support table 31, a support roller 33a is provided on the upper portion. Each movable support base 33 slides on a pair of guide rails 32 so as to approach and separate from the fixed support base 31, and a mold is provided on the fixed support base 31 and each movable support base 33. 10 is placed.

In addition, the pair of guide rails 32 are provided outside the movable support bases 33 so that the lift bases 7 of the lift mechanism 70 are provided.
1 is installed slidably. Each elevating table 71 elevates and lowers the mold 10 placed on each movable supporting table 33 and fixed supporting table 31, and as shown in FIG. 3, the upper and lower parts of the vertically elevating cylinder 72 are arranged. A shaft mounting portion 74 is arranged at the tip of the piston rod 73 that advances to the.

The shaft mounting portion 74, as shown in FIG.
The shaft portion 61 of the reversing shaft member 60 attached to each end surface of the mold 10 is rotatably supported. The reversing shaft member 60 includes a plate portion 62 bolted to each end surface of the mold 10 and a shaft portion 6 attached to the central portion of the plate portion 62 in an orthogonal state.
1 and. Then, the reversing shaft member 60 is the mold 1
With the shafts 61 attached to the respective end surfaces of 0, the shafts 61 are supported by the shaft mounts 74 of the lifts 71 and lifted from the fixed support 31 and the movable supports 33, so that the mold 10 is inverted. Raised to the point where it is possible.

As shown in FIG. 2, on the upper surface of the base 20,
As the fixed support 31 and each movable support 33 are sandwiched,
Rotation mechanism 5 extending along the longitudinal direction of the base 20.
A pair of 0 rotation shafts 51 is arranged. Each rotating shaft 51
The respective end portions and the vicinity of the central portion are rotatably supported by bearings 52 mounted on the base 20. Below the rotary shafts 51 between the fixed support base 31 and the movable support bases 33, rotary cylinders 53 are arranged so as to be orthogonal to the rotary shafts 51.

As shown in FIG. 5, the rotating cylinders 53 are arranged such that the piston rods 53a are in opposite directions to each other, and are attached to the rotating shafts 51 at the tips of the piston rods 53a. Connecting arm 54
The respective tip portions of are each rotatably connected. A support plate 55 is attached to each rotation shaft 51 at a position above each rotation cylinder 53.
Each support plate 55 has a plate main body 55a extending upward from the rotary shaft 51, and an engaging portion 55b protruding toward the other rotary shaft 51 at each lower end of the plate main body 55a. Have The upper surface of each engaging portion 55b has substantially the same height as the upper surfaces of the fixed support table 31 and each movable support table 33.

As shown in FIG. 2, a support base 43 of the separating mechanism 40 is arranged at each end of each rotary shaft 51. As shown in FIG. 6, each support base 43 has a rotating shaft 51.
The support mechanism 30 is engaged with the guide plates 45 horizontally mounted on the respective ends of the support mechanism 30 respectively.
Are arranged so as to face the respective end faces of the mold 10 supported by. Each of the support bases 43 is provided with a support plate 41 arranged to face each other in a vertical state, and a pair of upper and lower separation cylinders 42 is arranged on the side of each support plate 41. .

The support plate 41 is the rotating mechanism 50 described above.
Similarly to the support plate 55 of the plate main body 41 a extending upward from the rotary shaft 51, and the plate main body 41 a
Has an engaging portion 41b protruding from the lower end portion thereof toward the other rotating shaft 51 side. Each separation cylinder 42
The piston rod 42 is substantially orthogonal to the rotary shafts 51.
A base end portion is rotatably supported by the support base 43 so that a is opposed to each other. The tip end portion of each piston rod 42a is connected to each end surface of one die body portion 11 of the die 10 supported by the fixed support base 31 and each movable support base 33 by a pair of bolts 42b. Has become.

The mold separating device having such a structure operates as follows. Sheet mold 1 attached to the extruder
When cleaning the resin flow path 12 of 0, the mold 10 is removed from the extruder and lifted by a crane or the like, and the lip 14 is lowered onto the fixed support base 31 and the movable support base 33 of the support mechanism 30. Placed on the side. In this case, each movable support 33 is guided by the guide rail 3 so that each side of the mold 10 is supported by each movable support 33.
It is slid along 2 and set at an appropriate position. In addition, each rotating cylinder 53 has a piston rod 53.
a is driven so as to retreat, and the plate body 55a of the support plate 55 attached to each rotary shaft 51.
The upper parts rotate so as to be separated from each other, and are in a substantially horizontal state on the upper side of each rotating shaft 51. At the same time, the support base 43 of each separating mechanism 40 also rotates in the same manner, and the plate body 41a of the support plate 41 is in a substantially horizontal state.

When the die 10 is placed on the fixed support 31 and each movable support 33, the plate portion 62 of the reversing shaft member 60 is bolted to the end surface of each die 10. As a result, the shaft portion 61 of the reversing shaft member 60 is horizontally projected from the end surface of the mold 10.

Next, each elevating table 71 is slid on the guide rail 32 in a state in which the shaft mounting portion 74 is lowered, and the shaft mounting portion 74 is positioned below the shaft portion 61 of the reversing shaft member 60. . In such a state, the lift cylinder 73 is driven to move up, and the shaft mount 74 is moved up. This allows
The shaft portion 61 of the reversing shaft member 60 attached to each end surface of the mold 10 is rotatably supported by the shaft mounting portion 74 and ascends, and the entire mold 10 is fixedly supported by the movable base 31 and each movable support. It is lifted from the table 33.

In such a state, the worker turns the mold 10 over 180 °. Since the shaft portion 61 supported on each shaft mounting portion 74 is in a rotatable state, the mold 10 can be easily inverted by 180 °. As a result, the mold 10 has the lip 14
Is positioned on the upper side. After that, the elevating cylinder 72 is driven to descend, and the mold 10 holds the fixed support table 31 and each movable support table 3 with the lip 14 on the upper side.
3 is placed on top. When the mold 10 is placed on the fixed support base 31 and each movable support base 33, each lift base 71 of the lift mechanism 70 is slid on the guide rail 32 so as to be separated from each end surface of the mold 10. It Then, the reversing shaft member 60 is removed from each end surface of the mold 10.

When the reversing shaft member 60 is removed from the mold 10, all the bolts 15 connecting the mold main body parts 11 to each other are removed. And each rotating cylinder 53
Is driven to advance the piston rod 53a. As a result, the respective rotary shafts 51 are rotated, and the upper portions of the plate body portions 55a of the support plates 55 attached to the respective rotary shafts 51 are rotated so as to approach each other, and the plate body portions 55a are brought into a substantially vertical state. Become. At the same time, the support base 43 of each separation mechanism 40 also rotates in the same manner, so that the plate body 41a of the support plate 41 becomes substantially vertical.

After that, each support 4 in the separating mechanism 40
Each separation cylinder 42 attached to the No. 3 is driven to advance the piston rod 42a. And
The tip of the piston rod 42a of the separation cylinder 42 is
A pair of bolts 42b are connected to the respective end surfaces of each die body 11 of the die 10.

In such a state, the separating cylinders 42 are driven so as to retract the piston rods 42a, so that the mold body portions 11 connected to the pair of piston rods 42a are separated from each other. The mold main bodies 11 are separated from each other with a space left therebetween. Then, the respective mold body portions 11 are moved until their side surfaces come into contact with the plate body portions 41a and 55a of the support plates 41 and 55, respectively, and the respective mold body portions 11 are moved.
Is located on the engaging portions 41b and 55b of the support plates 41 and 55.

At this time, a pair of upper and lower separation cylinders 42
The upper separation cylinder 42 is driven first so that the gap between the lips 14 of each mold body 11 is made larger than the current gap by about 1 mm. In such a state, the upper and lower separating cylinders 42 are simultaneously driven to separate the mold body parts 11 from each other into a state in which an appropriate interval is provided. By separating the mold main body portions 11 in this manner, it is possible to reliably prevent the inner surfaces of the lips 14 from coming into contact with each other and being damaged.

As described above, instead of driving the upper separation cylinder 42 first, the driving force of the upper separation cylinder 42 is set to be larger than the driving force of the lower separation cylinder 42. Upper separation cylinder 42
Driving force of 15 kg / cm ² , lower separation cylinder 4
The driving force of ² may be set to 10 kg / cm ² and both separation cylinders 42 may be driven simultaneously. In this case, the separation cylinder 42 on the upper side, which has a large driving force, increases the gap between the lips 14 of each mold body 11 first, and thus prevents the inner surface from being damaged by the contact between the lips 14.

The resin flow passages 1 of the mold 10 are formed by the mold main body parts 11 being separated from each other and a space being formed therebetween.
Even if the resin remains in 2, the resin is in a divided state.

Next, each rotating cylinder 53 is driven so as to retract the piston rod 53a. As a result, each of the rotating shafts 51 is rotated so that the upper portions of the plate body portions 55a of the supporting plates 55 attached to the rotating shafts 51 are separated from each other, and the supporting bases 43 of the separating mechanisms 40 are rotated. Is similarly rotated. By rotating the support plates 41 and 55, each support plate 4
The engaging portions 41b and 55b of 1 and 55 are engaged with the lower side surface of the mold body 11 on the side opposite to the lip 14 to lift the mold body 11, The mold main body portions 11 rotate so that the lips 14 are separated from each other. Then, when the support plates 41 and 55 are further rotated, each of the mold body portions 11 is moved to the plate body portion 41.
a and 55a. In this way, when the plate main body portions 41a and 55a are rotated by approximately 90 °, the plate main body portions 41a and 55a are rotated.
a is substantially horizontal, and each mold body 11 is supported on each plate body 41a and 55a with the resin flow path 12 facing upward.

At this time, the lip 14 of each mold body 11
Are spaced apart from each other, and are larger than the intervals of the parts located below the respective mold body parts 11, so that the lips 14 can be rotated first so as to be separated from each other. Moreover, there is no risk that the lips 14 will come into contact with each other. Therefore, there is no risk that the lips 14 will be damaged and the distance between the resin outlets defined by the gap between the lips 14 will change.

Further, even if the resin remains in the resin flow path 12, the resin does not adhere to the adhesive because the mold body portions 11 are separated from each other with a space therebetween. There is no fear of functioning like this, and the mold body 11 is smoothly rotated by a relatively small force. Furthermore, since the respective end surfaces of the respective mold body portions 11 are in a state of being connected to the respective separation cylinders 42 of the separating mechanism 40, the respective mold body portions 11 are firmly supported and are rotated. There is no danger of dropping from time to time.

In this way, each mold body 11 is rotated until the resin flow path 12 faces upward,
Cleaning of the resin flow path 12 and the like are performed.

When the mold body 11 is assembled after the cleaning of the resin channel 12 is completed, the disassembling device is the mold 10.
It is operated in the reverse procedure of disassembling. Then, the mold body 10 is assembled by connecting the mold body portions 11 to each other with the bolts 15.

[0040]

As described above, the mold disassembling apparatus of the present invention is
Since each mold main body is separated by the separating mechanism and the mold main bodies are rotated with a space between the mold main bodies, the lip of each mold main body is rotated. There is no danger of scratching the inner surface. Moreover, even if the resin remains in the mold, the resin does not function as an adhesive because of the divided state, and the mold body can be smoothly rotated with a small force. Furthermore, since each mold main body is rotated while the mold main body is supported by the separating mechanism, there is no risk of the mold main body falling off during rotation.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a mold disassembling apparatus of the present invention.

FIG. 2 is a plan view of the mold disassembling apparatus.

FIG. 3 is a side view of the mold disassembling apparatus.

FIG. 4 is a perspective view in which a reversing shaft member used in the mold disassembling apparatus of the present invention is attached to a mold end surface.

FIG. 5 is a cross-sectional view of essential parts for explaining a rotating mechanism in the mold disassembling apparatus.

FIG. 6 is a cross-sectional view of a main part for explaining a separating mechanism in the mold disassembling apparatus.

7A to 7H are perspective views showing a procedure for disassembling a conventional mold, respectively.

[Explanation of symbols]

 10 Mold 11 Mold Main Body 12 Resin Flow Path 14 Lip 30 Support Mechanism 31 Fixed Support Stand 32 Guide Rail 33 Movable Support Stand 40 Separation Mechanism 41 Support Plate 41a Plate Main Body 41b Engagement Section 42 Separation Cylinder 43 Support Stand 50 Times Moving mechanism 51 Rotating shaft 53 Rotating cylinder 54 Connecting arm 55 Support plate 55a Plate body 55b Engaging portion 60 Reversing shaft member 61 Shaft portion 62 Plate portion 70 Lifting mechanism 71 Lifting platform 72 Lifting cylinder 74 Shaft mounting portion

Claims (2)

[Claims] 1. A support mechanism for supporting a die for extrusion molding having a pair of die body portions in a state where a resin flow path is in a vertical direction, and each die of the die supported by the support mechanism. A separation mechanism that is connected to the end face of the mold body and slides each mold body away from each other, and engages the separated mold body parts so that the upper parts of the mold body parts And a rotating mechanism for supporting the respective mold main bodies in a state where the resin flow paths face upward, by rotating the mold main body parts by about 90 ° so as to be separated from each other. 2. A pair of reversing shaft members, each of which is attached to each end face of the mold supported by the supporting mechanism so that a shaft portion orthogonal to each end face protrudes, and a shaft of each reversing shaft member. The mold disassembling apparatus according to claim 1, further comprising an elevating mechanism that supports the unit in a rotatable state and elevates the unit.