JPH1120006A - Method and apparatus for manufacture of extrusion molding for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately process an extrusion material moving at a predetermined speed. SOLUTION: The manufacturing apparatus 20 comprises a non-contact type making unit 34 for forming a mark at a predetermined position based on a moving speed of an extrusion material 30 to be continuously extruded from a mouthpiece 26 on the material 30, and processing units 40, 50, 60, 70. For example, the unit 40 moves a processing unit 46 for forming a slit at a processing position cooperatively with a moving speed of the material 30 under the control of a controller 48 based on a mark position detected by a non- contact type mark reader 42 and the moving speed of the material 30 to be detected by a take-off unit 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing extruded articles for vehicles, such as weather strips, glass runs, and moldings, which are mounted along the periphery of opening and closing members such as window frames and doors of automobiles. .

[0002]

2. Description of the Related Art In vehicles such as automobiles, a weather strip,
Various extruded products such as glass run and molding are mounted. Such an extruded product is obtained by continuously extruding an extruded material from an extrusion opening of a die having a cross-sectional shape, passing through appropriate steps such as vulcanization or cooling, and then extruding the extruded material to a predetermined length by a cutting machine. (See Japanese Patent Application Laid-Open Nos. 6-254939 and 6-339970).

In order to change the cross-sectional shape of an extruded product in the longitudinal direction according to the mounting portion on the vehicle side, for example, the opening shape of the extrusion port is changed by using a variable device provided downstream of the die. Methods of continuously changing or cutting out a part of the extruded material are conventionally known.

Further, a mark for positioning when attached to a vehicle body may be written at a predetermined position of an extruded product after cutting. However, since it is very troublesome to apply a mark to each extruded product after cutting, conventionally, a marker is provided on the surface of the extruded material using a marking machine provided on an extrusion line. Are written directly using

As shown in FIG. 1 of Japanese Patent Application Laid-Open No. 6-339970, the operation of such a cutting machine, a variable device, a marking machine, and the like is performed by an extruder detected by a speed detector provided in an extrusion line. The drive is controlled by the control device based on the moving speed of the material. For example, in the cutting step, the cutting is performed when the extruded material has passed through the cutting machine by a predetermined length based on the moving speed of the extruded material.

[0006]

However, in the above-mentioned prior art, the yield is low because the cutting process is performed on the moving extruded material, and the mark is directly written on the moving extruded material. Therefore, the surface of the extruded material may be damaged, and the quality of the product may be reduced.

Further, for example, a slack of an extruded material or a take-off machine is provided between a speed detector disposed relatively upstream in an extrusion line and a cutting machine or marking machine disposed downstream. In some cases, the extruded material may shift in position or in speed due to slip or the like. This does not cause much problem in the case of small-volume production, but in the case of continuous production in large quantities, the deviation gradually accumulates and becomes a large deviation. As a result, the cutting position or the mark position is shifted from the predetermined position. There is a possibility that the displacement will be large and the quality of the product will be degraded.

The present invention has been made in view of the above problems, and provides a method or apparatus for manufacturing an extruded product for a vehicle, which can perform a high-precision processing on an extruded material in an extrusion line. It is intended to be.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a plurality of extruded products for a vehicle by cutting an extruded material continuously extruded in a longitudinal direction into predetermined lengths. A marking process for marking the extruded material at a predetermined position of each extruded product based on the moving speed thereof,
The extruded material has a processing step of using a processing machine at a processing position of each extruded product, and the processing step includes detecting a mark position and detecting a moving speed of the extruded material. And, based on the mark position and the moving speed, the processing machine is controlled to move in conjunction with the moving speed of the extruded material.

Further, in the invention according to claim 2, in the marking step, a mark is applied using a non-contact type marking machine.
In the above processing step, the mark position is detected using a non-contact type mark reader.

A third aspect of the present invention is characterized in that the mark functions as an alignment for mounting the manufactured extruded product on a vehicle.

According to a fourth aspect of the present invention, there is provided an apparatus for manufacturing an extruded product for a plurality of vehicles by cutting an extruded material continuously extruded in a longitudinal direction at predetermined intervals to produce a plurality of extruded products for a vehicle. A non-contact type marking machine that marks a predetermined position of each extruded product based on the moving speed, and a processing unit provided on the material downstream side of the marking machine,
This processing unit has a non-contact type mark reader for detecting the mark position, a speed detector for detecting the moving speed of the extruded material, and processing the extruded material at the processing position of each extruded product. It is characterized by having a processing machine for performing processing and control means for controlling the movement of the processing machine in conjunction with the moving speed of the extruded material based on the mark position and the moving speed.

A fifth aspect of the present invention is characterized in that a plurality of the processing units are provided, and each processing unit has a mark reader, a speed detector, a processing machine, and a control means.

[0014]

According to the first aspect of the present invention, the processing machine is moved in conjunction with the moving speed of the extruded material. It is possible to perform highly accurate processing. As a result, as compared to the case where the extruded product after the cutting is processed, the production efficiency is remarkably improved,
For example, the cutting process can be performed extremely precisely, and the yield of products is significantly improved.

In the processing step, the position of the mark applied in the mark step is detected, and the processing is performed based on the mark position and the moving speed of the extruded material. I do. In other words, in the present invention, since the mark position and the moving speed are detected in the processing step, even if there is a position shift or a speed shift of the extruded material on the upstream side of the processing step, those shifts are in the processing position. There is no adverse effect.

According to the second aspect of the present invention, since the non-contact type marking machine and the mark reader are employed, the surface of the extruded material is not damaged at the time of making or reading a mark. The shape is stable and its quality is improved.

According to the third aspect of the present invention, the mark functions as an alignment for attaching the extruded product to a vehicle. That is, in the present invention, the processing accuracy is improved by using the marks for mounting position alignment.

According to the fourth aspect of the present invention, the processing machine is moved in conjunction with the moving speed of the extruded material. It is possible to perform high processing,
The production efficiency is remarkably improved as compared with the case where the extruded product after the cutting is processed.

In the processing step, since the processing is performed based on the mark position and the moving speed of the extruded material, the accuracy of the processing position is extremely improved. That is, since the mark position and the moving speed are detected in the processing step, even if there is a position shift or a speed shift of the extruded material upstream of the processing step, these shifts do not adversely affect the processing position. .

Furthermore, since a non-contact type marking machine and a mark reader are employed, the surface of the extruded material is not damaged when making or reading a mark, and as a result, the shape of the extruded product is stabilized and its quality is improved. Is improved.

According to the fifth aspect of the present invention, since the plurality of processing units each include the mark reader, the speed detector, the processing machine, and the control means, it is possible to perform highly accurate processing. it can. Further, since each processing unit operates independently, the control thereof is simplified, and introduction and omission of each unit can be easily performed.

[0022]

5 and 6 show a glass run 10 as an extruded product according to a first embodiment of the present invention. The glass run 10 is formed in a substantially U-shaped cross section by a synthetic resin material in which a core material 16 is embedded. For example, the glass run 10 is mounted along the inner peripheral side of a door sash portion of an automobile door, and is adapted to move up and down. It guides and seals the periphery.

The glass run 10 has a corner portion 10c that curves from the first straight portion 10a to the second straight portion 10b in accordance with the curved shape of the mounting portion, and the first straight portion 10a
And the second linear portion 10b have different cross-sectional shapes.
In the corner portion 10c, a total of four slits 12 are formed at appropriate intervals on the outer peripheral side so as to follow the curved shape, and a tape 14 is adhered so as to cover and cover these slits 12. . Also, this grass run 10
The mark 18 for positioning when attaching to the vehicle
Are formed at predetermined positions.

FIG. 1 shows an apparatus 2 for manufacturing the glass run 10.
FIG. 2 is a schematic view showing the number 0, and the material advances from left to right in the figure.

The core 16 unwound from the coiler 22
Is supplied to the base 26 while its passing speed (feed amount) is detected by the encoder 24.

In the base 26, an extruded material 30 in which the resin material supplied from the hopper 26a and the core material 16 are integrally formed.
Is continuously extruded from an extrusion port formed on the downstream side. Here, a variable device 28 having a shielding plate 28a is provided on the downstream side of the base 26, and the opening shape of the extrusion opening is changed by opening and closing a part of the extrusion opening with the shielding plate 28a. . As a result, the extruded material 30 extruded
Are a first straight portion 10a and a second straight portion 1 having different cross-sectional shapes.
0b are extruded alternately through the corners 10c. The driving of the variable device 28 is controlled by a control device 32. The control device 32
An operation signal is output to the variable device 28 based on the moving speed of the extruded material 30 detected in 4 to control the operation timing of the shielding plate 28a.

A non-contact type marking machine 34 is provided downstream of the variable device 28. This marking machine 3
Numeral 4 denotes, for example, an ink jet type or a laser marker type, and a mark 18 is provided at a predetermined position of each glass run 10 shown in FIG. Has been given.

Subsequently, the extruded material 30 is cooled in a cooling tank 36 and solidified into a stable shape.

On the downstream side of the cooling tank 36, a cutout unit 40 for forming a total of four slits 12 and the slits 12 are formed at processing positions of the extruded material 30 corresponding to the corner portions 10c of the glass run 10. Hammering unit 50 for performing bending by high frequency at the processed position, tape attaching unit 60 for attaching tape 14 so as to cover slit 12 with respect to the processed position, and extruded material 3.
And a cutting unit 70 that cuts 0 to a predetermined length to obtain a glass run 10 of a predetermined length.

The notch unit 40 includes a non-contact type mark reader 42 for detecting the position of the mark 18, a pickup device 44 with an encoder for picking up the extruded material 30 at a predetermined speed and detecting the moving speed of the extruded material 30. A processing machine 46 for performing notch processing at the processing position, and
And a control unit 48 for controlling the movement in conjunction with the moving speed of the moving object. As the mark reader 42, for example, a type difference sensor, an image processing sensor, or the like is used.

In the notch unit 40, the processing machine 46 is controlled by the control unit 48 based on the mark position and the moving speed of the extruded material 30 detected by the take-off device 44.
A total of four slits 12 are formed at the processing position of the extruded material 30 while moving in the traveling direction of the extruded material 30 in synchronization with the moving speed of the extruded material 30.

As described above, in this embodiment, since the processing machine 46 is moved in conjunction with the moving speed of the extruded material 30, the extruded material 30 is moved at a predetermined speed in the extrusion line while the extruded material 30 is moved. Can be processed with high accuracy. As a result, the production efficiency is remarkably improved as compared with, for example, a case in which processing is performed after cutting.

Further, since the processing is performed based on the mark position and the moving speed detected by the mark reader 42 and the take-up device 44 disposed immediately upstream of the processing machine 46, the processing position is determined. The accuracy is greatly improved. In other words,
Even if the extruded material 30 has a position shift or a speed shift on the upstream side of the notch unit 40, the shift does not adversely affect the processing position.

Further, since the marking machine 34 and the mark reader 42 are of a non-contact type, the surface of the extruded material 30 is not damaged when making or reading a mark. As a result, the shape of the manufactured glass run 10 is stabilized, and its quality is improved.

Like the notch unit 40, each of the subsequent processing units 50, 60, and 70 also has a mark reader 52, 62, and 72 and a take-off machine 54, 64, and 74, respectively.
, Processing machines 56, 66, 76, and control units 58, 68, 7
8 is provided. Therefore, each processing unit 50,
Also in 60 and 70, high-precision processing is performed, and the same operation and effect as the above-described notch unit 40 can be obtained. For example, in the cutting unit 70, the cutting process can be performed extremely precisely, so that the product yield is significantly improved.

As described above, in this embodiment, each unit has a mark reader, a take-off machine, a processing machine, and a control unit, and is individually driven and controlled, so that the control is simplified. In addition, each unit can be easily introduced or omitted.

FIG. 2 shows a processing machine 46 of the notch unit 40. The processing machine 46 has a box-shaped skeletal structure surrounding the extruded material 30 moving at a predetermined speed on the extrusion line, and has two lower bridges bridged between an upstream frame 82 and a downstream frame 84. The slide table 88 is supported by the guide rod 86 so as to be able to advance and retreat along the traveling direction of the extruded material 30, and the linear slider 92 is similarly formed by two upper guide rods 90 bridged between the frames 82 and 84. It is supported so that it can advance and retreat along the traveling direction.

The slide table 88 and the linear slider 92 are advanced and retracted by rotation of screw shafts 94, 94 bridged between the frames 82, 84, respectively, and the screw shafts 94, 94 are moved by servo motors 96, 96, respectively. It is driven to rotate. The servo motors 96 and 96 are driven and controlled by the control unit 48 shown in FIG. 1 so that the slide table 88 and the linear slider 92 move in synchronization.

An air cylinder 98 driven and controlled by the control unit 48 is attached to the linear slider 92. The four rods forming the slit 12 are formed at the tip of a rod 98a driven vertically by the air cylinder 98. A cutting jig 102 provided with a cutter 100 is mounted. On the other hand, a holding jig 104 corresponding to the inner shape of the extruded material 30 is provided on the upper surface of the slide table 88.
Is attached.

The operation of the processing machine 46 configured as described above will be described. Under the control of the control unit 48 based on the moving speed of the extruded material 30 and the mark position, the processed portion of the extruded material 30 is held and held by the slide table 88. When fitted on the tool 104, the servomotors 96, 96 are driven to move the slide table 88 and the linear slider 92 from the initial position (the left position in FIG. 2) to the downstream side in synchronization with the extruded material 30. At this time, the air cylinder 98 is driven and the cutter 100 is lowered from the initial position (the upper position in FIG. 2) to form the slit 12 at a predetermined position of the extruded material 30.

This processing is completed within the moving range of the slide table 88 and the linear slider 92. When the processing is completed, the cutter 100 is returned to the upper initial position, and the slide table 88 and the linear slider 92 are moved upstream. Is returned to the initial position. And
When the next processing portion is fitted on the holding jig 104, the above-described processing operation is repeated again.

FIG. 3 shows a processing machine 56 of the kinking unit 50. 3 and 4, the same components as those of the processing machine 46 shown in FIG. 2 are denoted by the same reference numerals, and duplicate description will be omitted as appropriate.

Here, instead of the cutting jig 102 shown in FIG. 2, an upper die 108 having a conductive coil 106 is attached to the tip of the rod 98a of the air cylinder 98 in the linear slider 92. On the slide table 88, instead of the holding jig 104 shown in FIG.
A lower mold 112 having a conductive plate 110 is attached. The upper mold 108 and the lower mold 112 are made of non-conductive epoxy resin or silicon resin, and opposing surfaces opposing each other are appropriately curved in accordance with the curved shape of the corner portion 10c. Here, the facing surface 112a of the lower mold 112 has a shape corresponding to the inner shape of the extruded material 30, and the conductive plate 110 is laid on the facing surface 112a.

At the time of processing, the processed portion of the extruded material 30, ie, the slit forming portion, is
a, the slide table 88 and the linear slider 92 move to the downstream side in conjunction with the extruded material 30 while the upper mold 108 descends to move the slit forming portion to the lower mold 1.
12 and at this time, a slit forming portion sandwiched between the conductive coil 106 and the conductive plate 110,
A curling process by high-frequency induction heating is performed.

FIG. 4 shows the processing machine 6 of the tape attaching unit 60.
6 is shown. Here, the lower mold 114 is mounted on the slide table 88, and the upper release paper 1 is attached to the side of the upper mold 116 mounted on the linear slider 92.
A roller 122 that feeds out the tape 14 that is sandwiched between the release paper 18 and the lower release paper 120 at an appropriate interval is provided. Note that the lower release paper 120 is peeled off immediately after being sent out from the roller 122.

In this tape sticking unit 60, the processed portion of the extruded material 30, that is, the curled curved portion is formed by the lower die 1
When the slide table 88 and the linear slider 92 are moved to the downstream side in conjunction with the extruded material 30 when fitted on the opposing surface 114 a of the Hold it between the tape 14
To the slit forming position. Remaining release paper 118
Is discharged from an outlet 116a formed in the upper die 116.

The processing machine 7 in the cutting unit 70
6 has a structure in which the cutter 100 for slit formation is replaced by a cutter for cutting in the processing machine 46 shown in FIG. 2, and is not shown here.

As described above, each processing unit 40, 50, 6
At 0 and 70, since the slide table 88 and the linear slider 92 are driven in conjunction with the extruded material 30,
The extruded material 30 can be processed with high precision while moving the extruded material 30 at a predetermined speed in the extrusion line.

FIG. 7 shows a manufacturing apparatus 124 according to a second embodiment of the present invention. This apparatus 124 is used to manufacture a window molding 126 to be mounted, for example, on the periphery of fixed glass of a vehicle. This device 124 basically has a configuration in which the habit forming unit 50 and the tape attaching unit 60 are omitted from the device 20 shown in FIG. 1, and the same components as those in the device 20 of FIG. Is attached.

Here, the decorative film 130 unwound from the second coiler 128 is supplied to the base 26 together with the core 16 unwound from the first coiler 22, and the core 16 is embedded in the resin material. At the same time, the extruded material 30 having the decorative film 130 formed on the surface thereof is continuously extruded from the extrusion port.

Thereafter, as in the first embodiment, the extruded material 30 extruded from the die 26 is marked by a marking machine 34, cooled and solidified in a cooling tank 36, and then moved to a processing position in the notch unit 40. A slit is formed. Thereafter, the sheet is immediately cut into a predetermined length by the cutting unit 70, and the window molding 126 having a predetermined length is continuously formed.

In the second embodiment as well, it is possible to obtain substantially the same operation and effect as in the first embodiment.

As described above, the present invention has been described in detail with reference to the embodiments. However, the present invention is not limited to the above embodiments, and can be applied to, for example, a weather strip made of a rubber material. In this case, the cooling tank 36 shown in FIGS.
A vulcanization tank is used instead of.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an apparatus for producing glass runs according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a processing machine of the notch unit of FIG. 1;

FIG. 3 is a perspective view showing a processing machine of the curving unit of FIG. 1;

FIG. 4 is a perspective view showing a processing machine of the tape attaching unit of FIG. 1;

FIG. 5 is a sectional perspective view of a glass run manufactured by the apparatus of FIG. 1;

FIG. 6 is a sectional view taken along the line AA in FIG. 5;

FIG. 7 is a schematic view showing an apparatus for manufacturing a wind molding according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Glass run 10c ... Corner part 12 ... Slit 14 ... Tape 20 ... Manufacturing apparatus 30 ... Extruded material 34 ... Marking machine 40 ... Notch unit 50 ... Kinking unit 60 ... Tape sticking unit 70 ... Cutting unit 42,52,62, 72 ... mark reader 44, 54, 64, 74 ... take-off machine (speed detector) 46, 56, 66, 76 ... processing machine 48, 58, 68, 78 ... control unit (control means)

Claims (5)

[Claims] 1. A method of manufacturing a plurality of extruded products for a vehicle by cutting an extruded material continuously extruded in a longitudinal direction at predetermined lengths, wherein the extruded material is determined based on a moving speed of the extruded material. The method includes a marking step of marking a predetermined position of each extruded product, and a processing step of processing the extruded material using a processing machine at a processing position of each extruded product. , Detecting the mark position, detecting the moving speed of the extruded material, and controlling the movement of the processing machine in conjunction with the moving speed of the extruded material based on the mark position and the moving speed. A method of manufacturing an extruded product. 2. The method according to claim 1, wherein the marking is performed using a non-contact type marking machine in the marking step, and the mark position is detected using a non-contact type mark reader in the processing step. 2. The method for producing an extruded product for a vehicle according to 1. 3. The method according to claim 2, wherein the mark functions as an alignment when the manufactured extruded product is mounted on a vehicle. 4. An apparatus for manufacturing a plurality of extruded products for a vehicle by cutting an extruded material continuously extruded in a longitudinal direction into predetermined lengths, wherein the moving speed of the extruded material is reduced. A non-contact type marking machine for marking a predetermined position of each extruded product based on the information, and a processing unit provided on the material downstream side of the marking machine, and the processing unit detects a mark position. A non-contact type mark reader, a speed detector for detecting the moving speed of the extruded material, a processing machine for processing the extruded material at a processing position of each extruded product, the mark position and the moving speed And a control means for controlling the movement of the processing machine in conjunction with the movement speed of the extruded material based on the above. 5. The extrusion molding for a vehicle according to claim 4, wherein a plurality of the processing units are provided, and each processing unit includes a mark reader, a speed detector, a processing machine, and a control unit. Product manufacturing equipment.