JP3667162B2 - Wind Mall manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a resin-made window molding used around a rear window glass of an automobile and the like, and relates to an apparatus for manufacturing a window molding whose sectional shape continuously changes along a longitudinal direction.
[0002]
[Prior art]
As this type of molding, as shown in FIG. 4, there is one in which a molding body 1 is provided with a lip 2 whose root position continuously changes up and down along the longitudinal direction of the molding body 1. In the case of this example, the molding is used for a rear window glass portion of an automobile, the molding main body 1 holds the window glass 3, and the lip 2 is in close contact with the vehicle body panel 4.
[0003]
The apparatus used for manufacturing the molding is usually a variable extruder that extrudes while continuously changing the shape of the resin material, and a predetermined shape in the cooling water tank while correcting the shape of the molded body extruded from the variable extruder. And a sizing jig for fixing the shape to the shape. The variable extruder includes a fixed base for extruding the molding body and a movable base for extruding the lip while continuously changing the extrusion height, and is extruded from the intermediate formed body and the movable base extruded from the fixed base. The intermediate formed body is polymerized and welded immediately after the material is extruded.
[0004]
Further, as shown in detail in FIG. 5, the sizing jig includes a fixed block 5 a. 5b and 5c, the fixed block 5a. 5b and 5c include a main body guide hole 6 having a substantially U-shaped cross-section substantially equal to the cross-sectional shape of the molding main body 1, an upper surface of the lip 2 when the mounting height is at the uppermost position, and a lower surface of the lip 2 at the lowermost position A lip guide hole 7 having a rectangular cross section substantially equal to the cross section connecting the two is formed continuously. Therefore, at the time of sizing, the molding body 1 portion of the molded body passes through the body guide hole 6 as it is, but the lip 2 portion of the molded body varies up and down according to the lip mounting height, and the lip guide hole 7. Pass through.
[0005]
[Problems to be solved by the invention]
However, in the wind molding manufacturing apparatus described above, since the lip guide hole 7 of the sizing jig is formed in a rectangular cross section so as to allow the change in the lip mounting height, the lip 2 is at the lowest position. Although the lowering of the tip of the lip 2 can be regulated by the upper surface of the bottom wall of the lip guide hole 7 as shown by the chain line in FIG. 5, the lowering of the tip of the lip 2 is suppressed when the lip 2 is above it. It cannot be regulated. Therefore, it is considered that the shape and posture of the lip 2 after sizing become unstable, and the manufacturing accuracy of the product is lowered.
[0006]
Therefore, the present invention is intended to provide a wind molding manufacturing apparatus that can increase the manufacturing accuracy of a product by enabling accurate sizing according to the material extrusion shape in an extruder.
[0007]
[Means for Solving the Problems]
As a means for solving the above-described problems, the invention according to claim 1 is a resin-made product in which the root position of the lip extending from the molding body continuously changes up and down along the longitudinal direction of the molding body. A device for manufacturing wind molding, a variable extruder that continuously extrudes with a cross section, and a molded body immediately after being extruded from the variable extruder placed on the extrusion front side of this variable extruder In the manufacturing apparatus provided with a sizing jig for fixing the shape in a predetermined shape inside, the sizing jig is provided with a fixed guide wall for guiding the molding body and a lip guide piece for guiding and supporting the lower surface of the lip. A variable mechanism for raising and lowering at least the lip support surface of the lip guide piece according to a change in the cross section of the variable extruder is provided.
[0008]
In the case of this invention, when the resin material is extruded from the variable extruder while continuously changing the mounting height of the lip, the variable mechanism of the sizing jig is operated according to the cross-sectional change of the variable extruder. As a result, the entire lip guide piece or only the lip support surface at the top of the lip guide piece moves up and down according to the change in the mounting height of the lip, and the lower surface of the lip is always abutted and supported by this lip guide piece. It becomes.
[0009]
The invention according to claim 2 is the invention according to claim 1, wherein the variable mechanism of the sizing jig delays the phase of the time lag until the molded body extruded from the variable extruder reaches the sizing jig, It was made to interlock with the operation of the variable die of the variable extruder.
[0010]
In the case of this invention, since the variable mechanism is controlled in consideration of the time lag until the molded body extruded from the variable extruder reaches the sizing jig from the same extruder, the lower surface of the lip whose height continuously changes is the lip. It will be accurately supported by the guide piece.
[0011]
According to a third aspect of the present invention, a vacuum passage connected to the vacuum device is formed in the upper surface of the lip guide piece of the sizing jig.
[0012]
In the case of the present invention, even when the mounting height of the lip changes from the upper side to the lower side, the lower surface of the lip is sucked by the negative pressure of the vacuum passage and reliably contacts the upper surface of the lip guide piece.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIGS.
[0014]
The manufacturing apparatus of this embodiment manufactures the same wind molding as shown in FIG. 4, and as shown in FIGS. 2 and 3, the sectional shape (mounting height of the root portion of the lip 2) is continuous. A variable extruder 10 for extruding a resin material while being changed, and a molded product w that is disposed immediately before extrusion from the variable extruder 10 and is extruded from the variable extruder 10 in a cooling water tank 11. And a sizing jig 12 for fixing the shape thereof.
[0015]
The variable extruder 10 has a fixed base 13 for extruding the molding body 1 part and a movable base 14 for extruding the lip 2 part. The movable base 14 is superposed on the front side of the fixed base 13 and is moved up and down. The height is adjusted by. That is, the resin material extruded from the fixed base 13 is polymerized and welded immediately after the resin material extruded from the movable base 14, and the welding position is continuously adjusted by the operation of the elevating / lowering actuator 15. In FIG. 3, reference numerals 16, 17, and 18 denote resin material supply pipes for the fixed base 13 and the movable base 14.
[0016]
On the other hand, the sizing jig 12 has a main body guide hole 20 (fixed guide wall in the present invention) having a substantially U-shaped cross-section substantially equal to the cross-sectional shape of the molding main body 1 in fixed blocks 19a, 19b, 19c having a three-part structure. Sliding grooves 21 opening upward at positions adjacent to the side portions of the main body guide hole 20 are formed so as to penetrate in the longitudinal direction (the feeding direction of the molded body w). A portion corresponding to the rear surface of the lip 2 of the main body guide hole 20 is opened in one side wall of the sliding groove 21, and a lip guide piece 22 having a substantially L-shaped cross section is accommodated in the sliding groove 21 so as to be movable up and down. Has been.
[0017]
The lip guide piece 22 extends in the sliding groove 21 along the side wall opposite to the main body guide hole 20 and extends in the width direction of the sliding groove 21 from the lower end of the vertical wall 22a. A horizontal wall 22b that protrudes, and an upper surface of the horizontal wall 22b serves as a lip support surface 22c that contacts the lower surface of the lip 2 of the molding. The lip support surface 22c is formed in a substantially arc-shaped cross section along the lower surface shape of the lip 2 as shown in FIG. The upper end of the vertical wall 22a of the lip guide piece 22 is connected to a lifting actuator 23 as a variable mechanism fixedly installed on a base (not shown). The lip guide piece 22 is slid by the operation of the lifting actuator 23. The moving groove 21 is moved up and down in the vertical direction.
[0018]
The operation of the elevating actuator 23 is controlled by a controller (not shown) together with the elevating actuator 15 for the movable base 14. The control is extruded from the variable extruder 10 and sent to the sizing jig 12. It is made so that the body w can maintain the shape immediately after extrusion.
[0019]
Specifically, the time lag between the two points is obtained in advance from the distance L (see FIG. 2) from the point of extrusion of the molded product w to the sizing jig 12 by the variable extruder 10 and the extrusion speed v of the molded product w. The lift actuator 23 for the lip guide piece 22 is operated in conjunction with the operation of the lift actuator 15 for the movable base 14 so as to be delayed by the time lag. Thereby, the lip guide piece 22 of the sizing jig 12 moves up and down according to the lip height of the molded body w that is continuously fed out, and abuts the lower surface of the lip 2 in accordance with the height change of the lip root portion. To support.
[0020]
Further, a vacuum passage 26 connected to the vacuum device Vac is formed in the lip support surface of the lip guide piece so that the lower surface of the lip 2 of the molded body is brought into close contact with the support surface 22c by the negative pressure of the vacuum passage 26. It has become.
[0021]
Therefore, the manufacture of wind molding is started by this apparatus, and when the variable extruder 10 continuously extrudes the resin material while changing the cross-sectional shape, the shaped product w is guided into the sizing jig 12. The shape is corrected in the cooling water tank 11 while the shape is corrected by the main body guide hole 20 and the lip guide piece 22, and thereafter, the shape is fixed on the roller 27 and wound around a winding device (not shown).
[0022]
Since the molded body w guided to the sizing jig 12 is always contacted and supported by the support surface 22c of the lip guide piece 22 on the lower surface of the lip 2 whose mounting height continuously changes as described above, the cooling water tank 11, the shape is fixed in the same shape as that immediately after extrusion. In particular, when the mounting height of the lip 2 changes from the upper side to the lower side, it may be difficult to make the lip 2 follow the support surface 22c of the lip guide piece 22 only by its own weight. In this embodiment, a vacuum passage is formed in the support surface 22c of the lip guide piece 22 so that the lip 2 is brought into close contact with the support surface 22c by the negative pressure of the vacuum passage 26. The shape is accurately corrected following the lip guide piece 22.
[0023]
Further, the lift actuator 23 for the lip guide piece 22 can detect the height of the lip 2 by a sensor and can control the lift based on the signal. In this embodiment, the lift actuator 23 of the variable extruder 10 can be controlled. Since the phase is delayed and interlocked with the operation of the movable base 14 by the time lag of feeding the molded body w, the number of parts is reduced and the control is simplified as compared with the case of using the sensor. As a result, the manufacturing cost of the apparatus is reduced.
[0024]
The embodiment of the present invention is not limited to the one described above. For example, in the above embodiment, the entire lip guide piece 22 is lifted and lowered by the lift actuator 23 to lift the support surface 22c of the lip guide piece 22 to the lip. The lip guide piece is formed in a disc shape, and a support surface that continuously changes in height in the circumferential direction is formed on the outer periphery of the upper surface. The rotation of the lip guide piece may be controlled by a rotation actuator as a variable mechanism in accordance with a change in the height of the lip.
[0025]
【The invention's effect】
As described above, according to the present invention, since the lip guide piece of the sizing jig is moved up and down in accordance with the cross-sectional change of the variable extruder, the lip guide piece is used regardless of the change in the mounting height of the lip extruded from the extruder. The lower surface of the lip can always be reliably abutted and supported. As a result, the lip is not deformed or tilted during sizing, and the manufacturing accuracy of the product is reliably increased.
[0026]
In particular, in the invention according to claim 3, even when the mounting height of the lip largely changes from the upper side to the lower side, the lower surface of the lip is sucked by the negative pressure of the vacuum passage and the upper surface of the lip guide piece is Therefore, the shape correction of the lip portion in the sizing process is surely performed, and the manufacturing accuracy of the product is further increased.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of the present invention.
FIG. 2 is a schematic side view showing the embodiment.
FIG. 3 is a sectional view showing the embodiment.
FIG. 4 is a perspective view showing a wind molding.
FIG. 5 is a front view showing a conventional technique.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mall main body 2 ... Lip 10 ... Variable extruder 11 ... Cooling water tank 12 ... Sizing jig 14 ... Movable base 20 ... Main body guide hole (fixed guide wall)
22 ... Lip guide piece 22c ... Lip support surface 23 ... Lifting actuator (variable mechanism)
26 ... Vacuum passage

Claims (3)

Variable to extrude by continuously changing the cross section in a device that produces resin wind molding where the base position of the lip extending from the molding body continuously changes up and down along the longitudinal direction of the molding body In a manufacturing apparatus comprising an extruder and a sizing jig that is arranged on the front side of the extrusion of the variable extruder and immediately after being extruded from the variable extruder, a sizing jig that fixes the shape in a predetermined shape in the cooling water tank,
The sizing jig is provided with a fixed guide wall for guiding the molding body and a lip guide piece for guiding and supporting the lower surface of the lip, and at least the upper surface portion of the lip guide piece is raised and lowered according to the cross-sectional change of the variable extruder. An apparatus for manufacturing wind molding, characterized in that a variable mechanism is provided. The variable mechanism of the sizing jig delays the phase of a time lag until the molded body extruded from the variable extruder reaches the sizing jig, and interlocks with the operation of the variable base of the variable extruder. The manufacturing apparatus of the wind molding of 1. 3. The wind molding manufacturing apparatus according to claim 1, wherein a vacuum passage connected to the vacuum device is formed in an upper surface of the lip guide piece of the sizing jig.

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