KR100942361B1 - Method for manufacturing weather strip - Google Patents

Method for manufacturing weather strip Download PDF

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Publication number
KR100942361B1
KR100942361B1 KR1020070005099A KR20070005099A KR100942361B1 KR 100942361 B1 KR100942361 B1 KR 100942361B1 KR 1020070005099 A KR1020070005099 A KR 1020070005099A KR 20070005099 A KR20070005099 A KR 20070005099A KR 100942361 B1 KR100942361 B1 KR 100942361B1
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KR
South Korea
Prior art keywords
holding
weather strip
sheet material
joining
mold
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KR1020070005099A
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Korean (ko)
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KR20070119478A (en
Inventor
모토히로 요시미즈
료코 타카다
타츠야 타무라
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도카이 고교 가부시키가이샤
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Publication of KR20070119478A publication Critical patent/KR20070119478A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/02—Deburring or deflashing
    • B29C37/04—Deburring or deflashing of welded articles, e.g. deburring or deflashing in combination with welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B29C65/2053—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position
    • B29C65/2061—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding
    • B29C65/2069—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined
    • B29C65/2076—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror" characterised by special ways of bringing the welding mirrors into position by sliding with an angle with respect to the plane comprising the parts to be joined perpendicularly to the plane comprising the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/032—Mechanical after-treatments
    • B29C66/0326—Cutting, e.g. by using waterjets, or perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/326—Shaping the burr, e.g. by the joining tool
    • B29C66/3262—Shaping the burr, e.g. by the joining tool as after-treatment, e.g. by a separate tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/524—Joining profiled elements
    • B29C66/5241—Joining profiled elements for forming coaxial connections, i.e. the profiled elements to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B29C66/632—Internally supporting the article during joining using a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73755—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized
    • B29C66/73756—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being fully cured, i.e. fully cross-linked, fully vulcanized the to-be-joined areas of both parts to be joined being fully cured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/305—Wipers

Abstract

The present invention prevents a step or burr from occurring at the joint portion of the hollow seal portion of the weather strip, thereby preventing deterioration of the sealing property of the joint portion of the hollow seal portion and improving the appearance. It aims to do it.

According to the structure of this invention, when joining the terminals of the weather strip material 13, a negative pressure is applied between the outer surface of the weather strip material 13, and the holding surfaces 38 and 39 of the holding mold 27. The negative pressure causes the outer surface of the weather strip material 13 (outer surface of the hollow seal part 16, etc.) to be retained on the holding surfaces 38 and 39 to maintain substantially the same shape as the holding surfaces 38 and 39. In addition, a positive pressure is generated in the hollow part in the hollow seal part 16, and by this positive pressure, the outer surface of the hollow seal part 16 is pressed against the holding faces 38 and 39, and the holding faces 38 and 39 are separated from each other. The cross section of the weather strip material 13 is bonded by the bonding sheet | seat material 14 in the state maintained in substantially the same shape. This prevents generation of steps and burrs on the outer surface of the joint portion of the hollow seal portion 16.

Weather Strip, Bonding Sheet, Attachment, Hollow Seal, Retention Type

Description

Manufacturing method of weather strip {METHOD FOR MANUFACTURING WEATHER STRIP}

1 is a perspective view of a vehicle equipped with a weather strip in Embodiment 1 of the present invention.

2 is a partial cross-sectional perspective view of the weather strip of Example 1. FIG.

3 is a front view of the manufacturing apparatus.

4 is a cross-sectional view taken along line A-A of FIG. 3, showing a state of closing of the holding mold.

FIG. 5 is a cross-sectional view taken along line A-A in FIG. 3 and showing a state when the holding mold is opened. FIG.

6 is a longitudinal sectional front view of the lower die of the holding die and its periphery;

7 is a longitudinal sectional front view of the manufacturing apparatus.

8 is a partial cross-sectional side view of the weatherstrip of Example 2. FIG.

9 is a partial cross-sectional perspective view of the weather strip of Example 3. FIG.

<Brief description of the main parts of the drawing>

12: weather strip 13: weather strip material

14: bonding sheet material 15: attachment portion

16: Hollow seal part (piece part) 26: Manufacturing apparatus

27: holding type 31: upper type (movable type)

32: lower form (fixed form) 33: medium form (medium form)

36: positioning recess 37: positioning stopper

38: upper mold holding surface 39: lower mold holding surface

43: heater 44: cutting blade

46: end face positioning member 49: holding positioning surface

50: end face positioning surface 51: positioning convex

52: adsorption hole 53, 54: negative pressure supply passage

55: assembly negative pressure supply furnace 56: negative pressure pump

57: on-off valve 58: air blowing pipe

60: constant pressure supply passage 61: assembly constant pressure supply passage

62: constant pressure pump 63, 64: on-off valve

65: vent hole 66: weather strip material

67: non-hollow seal part (joint part) 68: weather strip material

TECHNICAL FIELD This invention relates to the manufacturing method of the weather strip which joined the opposing terminals of the weather strip material which has an elastically deformable strip part.

For example, a weather strip mounted along a door opening edge of a vehicle is integrally formed with an elastically deformable hollow seal portion at an attachment portion mounted on a flange provided along the door opening edge, and the hollow seal portion is used to connect the door with the door. Some have been made to seal the gaps between the edges of the door openings. In such a weather strip, the weather strip corresponding to the shape of the attachment site | part, such as a door opening edge, may be manufactured by joining the terminal of one or several weather strip material extruded.

As a manufacturing method of this weather strip, as described in patent document 1 (Unexamined-Japanese-Patent No. 2004-130552), the terminal of one or more weather strip materials is hold | maintained, respectively, It is made to face each other, and these terminals are pushed together through the bonding sheet | seat material. In this state, the bonding sheet material is heated to bond the terminals of the weather strip material to the bonding sheet material (for example, vulcanized bonding).

[Patent Document 1] Japanese Patent Publication No. 2004-130552 (Second page, etc.)

However, in the above-mentioned conventional manufacturing method, when the terminals of the weather strip material held in the holding mold are pressed together by sandwiching the bonding sheet material therebetween, the outer surface of the thread-joint parts such as the hollow seal portion and the inner surface of the holding mold at the joining portion. A gap may occur between them. For this reason, the threaded piece is joined in a state where a gap is generated between the outer surface of the threaded piece and the inner surface of the holding mold (that is, the outer surface of the threaded piece is recessed), and a step is formed on the outer surface of the joint portion of the threaded piece. It may occur. Alternatively, a part of the joining sheet material enters (leakage) in the gap between the outer surface of the threaded piece part and the inner surface of the holding mold, so that a burr is generated on the outer surface of the joined part of the threaded piece part, and a protrusion is generated on the outer surface. There is a case. If a step or burr occurs on the outer surface of the joint portion of the threaded piece, the weather strip is mounted on the door opening edge of the vehicle, and when the door is closed and the back side of the door is in contact with the outer surface of the threaded piece, the step is In the protruding burr portion, a small gap is generated between the outer surface and the rear surface of the door, and the sealing property of the bonded portion of the threaded piece is deteriorated or the appearance of the bonded portion of the threaded piece is deteriorated.

The present invention has been made in consideration of these circumstances, and therefore, an object of the present invention is to prevent a step or burr from occurring at the joint portion of the strip of the weather strip material, and to prevent the deterioration of the sealing property of the joint portion of the strip portion. While also providing a method of manufacturing a weather strip that can improve the appearance.

In order to achieve the above object, the invention according to claim 1 is a single or a plurality of long vulcanized rubber terminal strips of one or more long vulcanized ends having elastically deformable strip portions. A method of manufacturing a weather strip in which end surfaces of a strip portion are joined by sandwiching a joining sheet material therebetween, wherein a pair of retaining types for holding the terminal of the weather strip material are arranged so as to be accessible and spaced apart from each other. A cross-sectional positioning member for positioning the cross section of the material is arranged to be movable between a position projecting between opposing surfaces of the pair of retaining molds and a position to retreat between the opposing surfaces. A movable type and a fixed type, in which a holding surface for holding a piece is formed, are provided to be opened and closed, and a pair of holding surfaces facing each other. At least one side of the cutting edge protruding toward the other side uses a joining device provided along the end of the holding surface, and projects the end face positioning member between a pair of holding surfaces opposite to each other, and opens both holding molds. A step of setting the weather strip material to a fixed type so that the cross section of the weather strip material is brought into contact with the cross-section positioning member so that the cross section of the strip part becomes a predetermined set position which is coincident with or close to the cutting edge of the cutting blade. Negative pressure that adsorbs the outer surface of the slab to the holding surface and immobilizes the slab in an unmovable manner to the holding mold by generating a negative pressure lower than atmospheric pressure between the outer surface and the holding surface of the slab in a state where the holding mold of the holding body is closed. A step of retracting the end face positioning member between the applying step, the pair of holding surfaces facing each other, and a pair of Bonding sheet material arranging process which arranges joining sheet material between opposing terminals of weather strip material hold | maintained in the mold, and approaching a pair of holding molds in the state which generated negative pressure between the outer surface and holding surface of a stem part, Pressing the bonding sheet material between each other and pressing the terminals of each of the pieces to exert a compressive force in the longitudinal direction on the bonding sheet material and the terminals of the pieces, while cutting the joining sheet material along the outer surface of the pieces with a cutting blade. Pressing process for cutting or forming a cutting line in the joining sheet material, and underpressure is generated between the outer surface and the holding surface of the nailing portion, and the bonding sheet member can be heated by flowing while pressing the terminals of the nailing portion to each other. The joining process of joining the cross sections of the cladding portions through the joining sheet material by softening them, and the weather in which the cladding portions are joined by opening the retaining mold after the negative pressure is released. It is one to execute the discharge process for taking out the retained material from the trips.

In this manufacturing method, a negative pressure is generated between the outer surface and the holding surface of the slab portion, and the end faces of the slab portions are bonded to each other in a state where the outer surface of the slab portion is adsorbed to the holding surface and held in substantially the same shape as the holding surface. Can be bonded. As a result, a step can be prevented from occurring on the outer surface of the joining portion of the slab, and a part of the bonding sheet material temporarily softened by heating enters (leakage) between the outer surface and the holding surface of the slab portion. It can prevent that, and there is no step | step in the outer surface of the joining part of a piece part, and a burr can be prevented from occurring. In addition, since the negative pressure is generated between the outer surface and the holding surface of the platen portion and the platen portion is immovably fixed with respect to the holding die, the end faces of the platen portion can be joined to each other in the longitudinal direction in the joining process. Even if the compression force is applied, it is possible to prevent the jaw portion from shifting in position. As a result, a proper bonding force can be applied to the joining sheet material to obtain a good joining state, and the occurrence of scratches or the like caused by the positional shift of the piece can be prevented.

In addition, as in claim 3, in the case where the slab portion is formed almost in a tubular shape, the outer surface of the slab portion is maintained by generating a static pressure higher than atmospheric pressure in the hollow portion of the slab portion while pressing the terminals of the slab portions together. In addition to the pressing on the surface, it is also possible to fix the nailing portion to the holding mold in a non-movable manner. In this case, a static pressure is generated in the hollow portion in the slab portion, and the outer surface of the slab portion is pressed against the holding surface to maintain substantially the same shape as the holding surface, and the slab portion is fixedly immovably with respect to the holding mold. Since the end faces of the surfaces can be joined by the joining sheet material, almost the same effect as in Claim 1 can be obtained.

In addition, although the above-mentioned Claim 1 and Claim 3 may be performed independently, respectively, combining both, it produces a negative pressure between the outer surface and the holding surface of a slab part, and also in the hollow part in a slab part like Claim 2, In the state in which the positive pressure is generated, the cross sections of the strip portions may be joined by a bonding sheet material. As a result, it is possible to more reliably prevent the generation of steps and burrs on the outer surface of the joining portion of the piece.

When negative pressure is generated between the outer surface and the holding surface of the platen portion, as shown in claim 4, an adsorption hole is formed in a plurality of portions of the holding surface of the holding type, and the air is sucked through the suction hole to make the outer surface of the platen portion. A negative pressure may be generated between the and the holding surface. In this way, the outer surface of a slab part can be adsorb | sucked in multiple site | parts of a holding surface, and the adsorption | suction fixation of a slab part can be performed stably.

Alternatively, as in claim 5, the holding surface of the holding mold may be formed of a porous material, and negative pressure may be generated between the outer surface and the holding surface of the slab portion by sucking air through the porous material. In this way, the outer surface of the slab part can be adsorb | sucked from the whole holding surface, and the adsorption | suction fixation of a slab part can be performed more stably.

In addition, when generating a static pressure in the hollow part in a strip part, what is necessary is just to generate | occur | produce substantially the same positive pressure in the hollow part in a strip part as shown in Claim 6 on both sides of a joining sheet material. In this way, the pressure in a clamping part can be made substantially the same on both sides of a joining sheet material, and the outer surface of a clamping part can be crimped | fixed and fixed to a holding surface almost uniformly on both sides of a joining sheet material.

Moreover, as in Claim 7, you may make it provide the ventilation hole of the magnitude | size which does not exceed the magnitude | size of the internal shape of the said hollow part in the position corresponding to the hollow part in the slab part in a joining sheet material. In this way, even if a difference occurs in the pressure supplied into the slab portion on both sides of the bonding sheet material, the pressure in the slab portions on both sides of the bonding sheet material can be made substantially the same by the vent holes of the bonding sheet material.

Further, as in claim 8, the slab portion may be formed of sponge rubber having a myriad of micropores, and in the joining step, a part of the bonding sheet material may enter the microholes of the slab portion at the time of temporarily softening by heating. . In this way, the joining force of the cross sections of the piece part through a joining sheet material can be improved by the anchoring action (fixing action by mechanical fitting) of the joining sheet material which entered into the microhole of the piece part.

In addition, as in claim 9, the bonding sheet material may be formed of unvulcanized rubber, and in the bonding step, the bonding sheet material and the slab portion may be vulcanized. In this case, the vulcanized joining between the bonding sheet material and the slab portion can firmly bond the cross sections of the slab portions to the bonding sheet material.

Alternatively, as in claim 10, the joining sheet material may be formed of a thermoplastic resin, and in the joining step, the joining sheet material and the slab portion may be heat-sealed to join. In this case, when joining a joining sheet material and a slab part, it is good only to cool after heat-melting a joining sheet material, and vulcanization becomes unnecessary, and a joining sheet material and a slab part can be joined for a short time.

Further, in the set step, when the weather strip material is set to a fixed type so as to be at a predetermined set position (a position where the end face of the cutting piece is substantially coincident with or near the cutting edge of the cutting blade), as in claim 11, a pair The weather strip material is placed in a stationary shape with the weather strip material positioned so that the cross-section positioning member is sandwiched between opposing surfaces of the holding type and the cross section of the weather strip material is retracted from the cutting edge of the cutting edge. The weather strip material may be set to a predetermined set position by sliding the strip material in the direction of the cross-section positioning member and bringing the cross section of the weather strip material into contact with the cross-section positioning member. In this way, the weather strip material can be set simply and accurately at a predetermined set position.

Alternatively, as in claim 12, the weather strip material is formed so as to protrude the cross-section positioning member between the pair of holding surfaces facing each other so as to separate both the retaining molds and the cross section of the weather strip material to protrude beyond the cutting edge of the cutting blade. In a fixed form, by moving the pair of retaining molds in close proximity to the end face of the weather strip material in contact with the end face positioning member, and also moving the holding dies in contact with the end face of the weather strip material in contact with the end face positioning member. The weather strip material may be set in a predetermined position by retreating relative to the holding die. Even in this case, the weather strip material can be set simply and accurately at a predetermined set position.

In addition, as in claim 13, the predetermined set position may be a position in which the cross section of the strip part protrudes slightly from the cutting edge of the cutting blade. In this case, the terminals of the flattening section can be joined in a state in which the terminals of the flattening section are compressed and elastically deformed in the longitudinal direction. Even if it is not, the whole end surface of a strip part can be made to adhere to a joining sheet material, and the part in which a joining sheet material becomes unfilled does not generate | occur | produce, and the whole end surface of a strip part can be joined favorably. In addition, after the joining is completed, the terminal portions of the nailing portion are in a state of being pushed together by the elastic repulsive force, so that no peeling or cracking occurs at the joining portion. Moreover, since the width | variety of a junction part can be narrowed, decorativeness is not reduced.

In addition, as in claim 14, the cutting blades may be formed on both sides of the pair of holding surfaces facing each other, and the bonding sheet material may be cut by the cutting blades on both sides in the thickness direction along the outer surface of the nailing portion. In this case, the bonding sheet material is sandwiched between the cutting edges at both sides in the thickness direction, and can be cut simultaneously. Therefore, the cutting force biased to one side of the bonding sheet material does not work at the time of cutting the bonding sheet material. The positional shift of the ash can be prevented and it can be cut | disconnected correctly.

In addition, as in claim 15, the weather strip material includes an attachment portion attached to the skin attachment portion, a jaw portion protruding from the attachment portion to form a seal portion, and a seal lip sealing a gap between the skin attachment portion and the attachment portion. In the joining process, all the end surfaces of the attachment portion, the slab portion, and the seal may be joined together through the bonding sheet material. In this way, all the cross sections of the attachment part, the strip part, and the seal of the weather strip material can be firmly joined by the bonding sheet material.

Embodiment of the Invention

Best Mode for Carrying Out the Invention Hereinafter, the best mode for carrying out the present invention will be described using three Examples 1-3.

(Example 1)

Embodiment 1 of this invention is demonstrated based on FIG.

As shown in FIG. 1 and FIG. 2, the weather strip 12 mounted along the back door opening edge of the body panel 11 is made of one or more long vulcanized rubber weather strip materials ( 13 terminals are bonded together by the bonding sheet | seat material 14 (refer FIG. 2), and are comprised in ring shape or ring shape.

As shown in Fig. 2, the weather strip material 13 has an almost U-shaped attachment portion 15 in cross section by extrusion molding of a rubber material such as EPDM, and a hollow seal portion made of an elastically deformable and almost tubular sponge rubber ( 16) (piece portion) is integrally formed, and the attachment portion 15 is embedded with a reinforcing bone-shaped core material 17 formed of a metal plate or the like by insert molding. Further, a plurality of retaining lips 20 protruding toward the inside are integrally formed on the inner circumferential surfaces of the vehicle outer side wall 18 and the vehicle inner side wall 19 of the attachment portion 15, respectively.

When the attachment portion 15 of the weather strip 12 is covered by the flange 21 provided along the back door opening edge of the body panel 11, the retaining lip 20 elastically deforms, and the flange 21 is moved from the inside of the car to the car. The weather strip 12 is attached to the flange 21 by sandwiching in both sides of an outer side. When the back door 22 is closed, the back door 22 contacts the hollow seal 16 to elastically deform the hollow seal 16, so that the gap between the back door 22 and the vehicle body panel 11 becomes hollow. 16) to be sealed. The hollow seal portion 16 is integrally formed with a vehicle inner seal portion 16a which is in contact with the back door 22 to perform substantial sealing, and a support portion 16b which is located outside the vehicle and elastically supports the vehicle inner seal portion 16a. It is.

Moreover, the lip 23 made of sponge rubber which protrudes toward the outer side of a vehicle is integrally formed in the outer peripheral surface of the vehicle outer side wall 18 of the attachment part 15. As shown in FIG. When the weather strip 12 is attached to the flange 21, the seal lip 23 elastically deforms and contacts the root side of the flange 21, thereby between the attachment portion 15 and the flange 21. Is sealed with a seal lip (23).

In addition, a shielding lip 24 which protrudes toward the inside of the vehicle and whose tip is curved toward the attachment portion 15 is integrally formed on the outer circumferential surface of the vehicle inner sidewall 19 of the attachment portion 15. When the strip 12 is attached to the flange 21, the terminal of the vehicle interior member (not shown) is inserted between the shielding lip 24 and the attachment portion 15. On the other hand, when the weather strip 12 is mounted on the flange 21, the hollow seal portion 16 or the seal lip 23 is formed between the vehicle outer side wall 18 and the vehicle inner side wall 19 of the attachment portion 15. It is sufficient to form a seal belt 25 made of a sponge rubber softer than the above.

The weather strip material 13 is formed of an EPDM sponge material, which is a foam rubber material in which the hollow seal portion 16, the seal lip 23, and the shielding lip 24 have a myriad of micropores, and are flexibly flexed. The portion 15 and the retaining lip 20 are formed of an EPDM solid material having a higher hardness and rigidity than the EPDM sponge material.

Further, the bonding sheet material 14 is formed of a vulcanizable unvulcanized rubber material such as EPDM, and the bonding sheet material (between the terminals of the vulcanized rubber weather strip material 13 in the bonding step described later) 14) to vulcanize the bonding sheet material (14). Thereby, the cross section of the joining sheet material 14 and the weather strip material 13 is vulcanized, and the cross section of the weather strip material 13 is joined through the joining sheet material 14.

Next, the manufacturing apparatus 26 (the bonding apparatus of the weather strip material 13) of the weather strip 12 is demonstrated using FIG.

As shown in FIG. 3, in the manufacturing apparatus 26 of the weather strip 12, a pair of holding | maintenance types 27 for holding the terminal of the weather strip material 13 approach each other along the guide rail 28, and It is arrange | positioned facing the slide movement so that it may move to a space apart. Each holding mold 27 (lower mold 32) is connected to the cylinder rod 30 of the air cylinder 29, respectively, and both holding molds 27 (lower mold 32) are provided by the air cylinder 29. This approach movement (slide movement in the approaching direction) or space movement (slide movement in the direction of separation) is performed.

In each holding mold 27, an upper mold 31 (movable mold), a lower mold 32 (fixed mold), and a middle mold 33 are provided to be opened and closed. The upper die 31 of each retaining die 27 is connected to the cylinder rod 35 of the air cylinder 34, respectively, and the upper die 31 moves upward by the air cylinder 34 so that the retaining die 27 is moved. It is made to move between the open position which opens, and the closed position which moves below and closes the holding mold 27. As shown in FIG. The frame 32a is fixed to the lower mold | type 32 of each holding mold | type 27, and the air cylinder 34 is attached to the frame 32b fixed to the upper part of this frame 32a. Thereby, each upper mold | type 31 is able to move or move apart with each lower mold | type 32 integrally.

Further, positioning recesses 36 for the closest approach are formed at the lower portions of the opposing surfaces of the respective holding molds 27 (lower molds 32), and between the positioning recesses 36 of the holding molds 27, respectively. The positioning stopper 37 for determining the closest position of both holding | maintenance dies 27 is arrange | positioned at this.

As shown to FIG. 4 and FIG. 5, the inner surface of the upper mold | type 31 of each holding | maintenance type | mold 27 has the outer surface of the outer side of the weather strip material 13 (support part 16b of the hollow seal part 16, and attachment part ( 15) and the upper mold | type holding surface 38 for holding the outer surface of the vehicle outer side, such as the seal lip 23, are formed in substantially the same shape as the outer surface shape of the vehicle outer side of the weather strip material 13. As shown in FIG. On the other hand, on the inner surface of the lower mold 32 of each holding mold 27, the outer surface of the vehicle inner side of the weather strip material 13 (car inner parts, such as the car inner seal part 16a of the hollow seal part 16 and the shielding lip 24, etc.). The lower mold holding surface 39 for holding the outer surface of the outer strip is formed in a shape substantially the same as the outer surface shape of the vehicle inner side of the weather strip material 13.

In addition, a first convex portion 40 and a second convex portion 41 for holding the attachment portion 15 of the weather strip material 13 are provided at the distal end portion of the middle die 33 of each holding die 27. The first convex portion 40 is fitted to the inner circumferential side of the attaching portion 15, and the second convex portion 41 is sandwiched between the attaching portion 15 and the shielding lip 24. Each middle die 33 is rotatably attached to the front side of the lower die 32 via a hinge 42, and is a closed position protruding between the upper die 31 and the lower die 32 (position shown in FIG. 4). ) And the opening position (position shown in FIG. 5) which retracts to the front of the lower mold | type 32 can be rotated.

In addition, each holding mold 27 (upper mold 31, lower mold 32, and middle mold 33) includes a plurality of heaters 43 (see FIG. 4) for heating the holding mold 27. The bonding sheet material 14 is heated by the heat of the oily terrain 27 heated by 43, and the bonding sheet material 14 is vulcanized.

In addition, as shown in FIG. 5, on the opposing surface of each holding mold 27, the cutting blade 44 which has a sharp tip for cutting the joining sheet material 14 along the outer surface of the weather strip material 13, respectively, is an upper mold | type. It is provided along the end of the holding surface 38 and the end of the lower mold holding surface 39. On the outer circumferential side of the cutting blade 44, a recess 45 for receiving the outer circumferential portion (protrusion) of the cut bonding sheet material 14 is provided. As shown in FIGS. 6 and 7, the cutting blade 44 Blade edge protrudes from the bottom of the concave portion 45 by a predetermined dimension (for example, 0.3 to 0.7 mm) (in other words, the bottom of the concave portion 45 has a predetermined dimension from the blade edge of the cutting blade 44). Pit).

6 and 7, in the manufacturing apparatus 26 of the weather strip 12, the cross-sectional positioning for positioning the end surface (at least the cross section of the hollow seal part 16) of the weather strip material 13 is performed. The member 46 is arrange | positioned so that a sliding movement to an up-down direction is possible. The end face positioning member 46 is connected to the cylinder rod 48 of the air cylinder 47. The end face positioning member 46 moves upward by the air cylinder 47, The protruding position (position shown in FIG. 6) which protrudes between the opposing surfaces of the lower mold | type 32, and the retracted position (represented in FIG. 7) which moves downward and retracts between the opposing surfaces of the lower mold | type 32 of each holding mold 27 Position) so as to slide.

On both sides of the lower portion of the cross-sectional positioning member 46, a holding mold positioning surface 49 for determining the approach position of each holding mold 27 (lower mold 32) is provided. On both sides of the upper portion of 46, the end face positioning surface 50 for positioning the end surface (at least the end face of the hollow seal part 16) of the weather strip material 13 is provided. The thickness dimension t2 of this end surface positioning surface 50 is set to the dimension smaller than the thickness dimension t1 of the holding positioning surface 49. As shown in FIG. In addition, the positioning convex part 51 is formed in the opposing surface of each holding | maintenance type | mold 27 (lower type | mold 32), and the position of the front end of this positioning convex part 51 and the blade tip of the cutting blade 44 It almost coincides or is set so as to protrude by a dimension (for example, 0.05 to 0.1 mm) from the blade tip of the cutting blade 44, and the blade tip contact is prevented.

As shown in FIG. 6, in the state which moved the cross-section positioning member 46 to the protruding position, each holding mold 27 (lower mold | type 32) is made to move, and each holding mold 27 (lower mold | type 32) is moved. When the positioning convex part 51 of the holding | maintenance positioning surface 49 is contacted with the holding | maintenance positioning surface 49, the predetermined dimension G (between the blade edge | tip of the cutting blade 44 of each holding mold 27 and the cross-sectional positioning surface 50 (for example, For example, 0.1 to 2.0 mm). Thereby, when the cross section (at least the cross section of the hollow seal part 16) of the weather strip material 13 contacts the cross-section positioning surface 50, the cross section (at least of the hollow seal part 16 of the weather strip material 13) is made. The end face is projected by a predetermined dimension G (for example, 0.1 to 2.0 mm) from the cutting edge 44.

In addition, as shown in FIG. 7, each holding mold 27 (lower mold | type 32) is moved close to each holding mold 27 (lower mold | type 32) in the state which moved the cross-section positioning member 46 to the retracted position. When the positioning concave portion 36) is in the closest position in contact with the positioning stopper 37, the edges of the cutting blades 44 of each holding die 27 lightly touch or the cutting blades 44 It is set so that some clearance may arise between the edges of the blade). As a result, when the respective holding dies 27 are placed in the closest position, the edges of the cutting blades 44 of the holding dies 27 strongly collide with each other to prevent damage or wear.

In addition, as shown in FIG. 4, the suction hole 52 is formed in the upper mold holding surface 38 and the lower mold holding surface 39 of each holding mold 27 in multiple places, and each holding surface 38 and 39 is shown. Suction holes 52 are connected to the first negative pressure supply passages 53 formed along the holding surfaces 38 and 39, respectively. Each first negative pressure supply passage 53 is connected to one collective negative pressure supply passage 55 through a second negative pressure supply passage 54 and a flexible flexible pipe 54a, respectively. 55 is connected to one negative pressure pump 56 (negative pressure generation source such as a vacuum pump). Each of the holding molds 27 is formed by sucking the air between the outer surface of the weather strip material 13 in the holding molds 27 and the holding surfaces 38, 39 through the suction holes 52 with this one negative pressure pump 56. The substantially same negative pressure lower than atmospheric pressure is generated between the outer surface of the weather strip material 13 and the holding surfaces 38 and 39 in the inside. On the other hand, it is preferable to form the suction hole 52 as close as possible to the opposing surface of the holding mold 27 (for example, the position of 0.3-1.5 mm from the opposing surface of the holding mold 27).

An open / close valve 57 is provided in the collective negative pressure supply passage 55, and when the open / close valve 57 is opened, the holding type 27 side of the collective negative pressure supply passage 55 connects to the negative pressure pump 56 side. When the on-off valve 57 is closed, the holding mold 27 side of the collective negative pressure supply passage 55 communicates with the atmosphere. The on-off valve 57 is constituted by a solenoid valve, and is controlled by the control device (not shown).

In addition, as shown in FIG. 7, when the air intake pipe 58 protrudes from the upper mold holding surface 38, respectively, it is provided in the upper mold 31 of each holding mold 27, and when each holding mold 27 is closed. (When each upper mold 31 is moved to the closed position), the needle-shaped tip end portion of the air intake pipe 58 of each retaining mold 27 has a hollow seal portion 16 of the weather strip material 13, respectively. The insertion hole 59 is formed in the outside of the vehicle, and protrudes into the hollow portion in the hollow seal portion 16. The air intake pipe 58 of each holding | maintenance type | mold 27 is connected to one collective static pressure supply path 61 through the static pressure supply path 60, such as a flexible flexible pipe, respectively, and this collective static pressure supply path 61 is It is connected to one static pressure pump 62 (compressor). Into the hollow portion 16 in the hollow seal portion 16 in each retaining mold 27, the air is introduced into the hollow through the air intake pipe 58, thereby allowing the air pressure in the hollow seal portion 16 in the retaining mold 27 to pass through. A substantially equal static pressure higher than atmospheric pressure is generated in the hollow portion (that is, the hollow portion in the hollow seal portion 16 on both sides of the bonding sheet material 14).

In addition, an on-off valve 63 is provided in the collective positive pressure supply passage 61, and when the opening / closing valve 63 is opened, the holding type 27 side of the collective constant pressure supply passage 61 is located on the positive pressure pump 62 side. When the opening / closing valve 63 is closed, the holding mold 27 side of the collective constant pressure supply passage 61 is connected to the atmosphere in series. In addition, the open / close valve 64 is provided in the positive pressure supply path 60 of each holding | maintenance type 27, and when the open / close valve 64 is opened, the holding type 27 side of the constant pressure supply path 60 is a positive pressure pump. It is connected to the 62 side side, and when the closing valve 64 is closed, the holding | maintenance type 27 side of the positive pressure supply path 60 is made to communicate with air | atmosphere. Each of the on-off valves 63 and 64 is composed of solenoid valves, respectively, and is controlled to open and close by a control device (not shown).

Next, the manufacturing method (wetting method of the weather strip material 13) of the weather strip 12 is demonstrated.

When manufacturing the weather strip 12 (bonding the weather strip material 13), first, the vulcanized rubber weather strip material 13 cut to a predetermined length after extrusion molding is prepared, and each weather The core 17 of the terminal portion of the strip material 13 is removed by about 1 to 3 mm, and by removing the core 17, a terminal portion with remaining voids corresponding to the shape of the removed core 17 is formed. Put it. In addition, each holding mold 27 (upper mold 31, lower mold 32, middle mold 33) of the manufacturing apparatus 26 is heated by the heater 43, and the temperature of each holding mold 27 is bonded to the bonding sheet material ( 14) is raised to the vulcanizable temperature (for example, 180 to 250 ° C).

Thereafter, the set process is executed. In this set process, as shown in FIG. 5, in the state which separated each holding mold 27, while moving the upper mold 31 of each holding mold 27 to an open position, the middle mold of each holding mold 27 ( 33) is rotated to the open position, and each holding mold 27 is opened. Thereafter, the weather strip material 13 is set to a predetermined set position of the lower mold 32 of each holding mold 27 by any of the following methods (A) or (B). Here, the predetermined set position is that the cross section (at least the cross section of the hollow seal portion 16) of the weather strip material 13 protrudes from the edge of the cutting blade 44 by a predetermined dimension G (for example, 0.1 to 2.0 mm). Position (see FIG. 6).

(A) First, as shown in FIG. 5, the 1st convex part 40 and the 2nd convex part 41 of the intermediate | middle mold 33 of each holding | maintenance type | mold 27 respectively of the terminal of the weather strip material 13 The attachment part 15 and the shielding lip 24 are covered, and the weather strip material 13 is set to the middle die 33. At this time, the weather strip material 13 is arrange | positioned so that the cross section of the weather strip material 13 may be the position which retracted from the blade edge | tip of the cutting blade 44. As shown in FIG. Thereafter, the middle die 33 of each retaining die 27 is rotated to the closed position, and the terminal of the weather strip material 13 is set on the lower die retaining surface 39 of each retaining die 27.

6, the end surface positioning member 46 is slid to a protruding position, and the end surface positioning member 46 is arrange | positioned between the opposing surfaces of each holding mold 27 (lower mold | type 32). After that, each holding die 27 is moved close to each other so that the positioning protrusions 51 of each holding die 27 (lower die 32) are brought into contact with the holding die positioning surface 49. Thereafter, the weather strip material 13 is slid in the direction of the cross-section positioning member 46 so that the cross section of the weather strip material 13 (at least the cross section of the hollow seal portion 16) is in contact with the cross-section positioning surface 50. By doing so, the weather strip raw material 13 is set at a predetermined set position. Thereby, the weather strip material 13 can be set to a predetermined set position simply and accurately.

(B) First, as shown in FIG. 5, the first convex part 40 and the second convex part 41 of the intermediate | middle mold 33 of each holding | maintenance type | mold 27 respectively of the terminal of the weather strip material 13 The attachment part 15 and the shielding lip 24 are covered, and the weather strip material 13 is set to the middle die 33. At this time, the weather strip material 13 is arrange | positioned so that the cross section of the weather strip material 13 may protrude from the blade edge of the cutting blade 44 by the dimension larger than predetermined value G. Thereafter, the middle die 33 of each retaining die 27 is rotated to the closed position, and the terminal of the weather strip material 13 is set on the lower die retaining surface 39 of each retaining die 27.

6, the end surface positioning member 46 is slid to a protruding position, and the end surface positioning member 46 is arrange | positioned between the opposing surfaces of each holding mold 27 (lower mold | type 32). After that, each holding die 27 is moved close to each other so that the end face (at least the end face of the hollow seal 16) of the weather strip material 13 is brought into contact with the end face positioning surface 50, and the weather strip material 13 The positioning convex part 51 of each holding mold 27 (lower mold 32) is in contact with the holding mold positioning surface 49 while the end face (at least the cross section of the hollow seal portion 16) is brought into contact with the end face positioning surface 50. By moving each holding | maintenance die 27 near to it, the weather strip material 13 is moved backward with respect to the lower mold | type 32, and is set to a predetermined position. Even in this case, the weather strip material 13 can be set to a predetermined set position simply and accurately.

After execution of the set step, the step of sliding the end face positioning member 46 to the retracted position to retract the end face positioning member 46 between the opposing surfaces of the respective holding dies 27 is carried out. 34 is operated to advance the cylinder rod 35 to move the upper mold 31 of each retaining mold 27 to the closed position, thereby executing the process of bringing the retaining mold 27 into the closed state. At this time, the needle-shaped tip of the air intake pipe 58 of each holding die 27 is inserted into the outside of the hollow seal 16 of the weather strip material 13 to protrude into the hollow in the hollow seal 16. .

Thereafter, a negative pressure applying step is performed. In this negative pressure applying step, the negative pressure pump 56 is operated together with the salt of the open / close valve 57 of the collective negative pressure supply passage 55 in a state where each holding mold 27 is closed. The one negative pressure pump 56 sucks air between the outer surface of the weather strip material 13 in each holding mold 27 and the holding surfaces 38, 39 through the suction holes 52, thereby maintaining the holding type ( Nearly the same negative pressure is generated between the outer surface of the weather strip material 13 and the holding surfaces 38, 39 in 27). By this negative pressure, the outer surface (outer surface of the hollow seal part 16, the seal lip 23, the shielding lip 24, etc.) of the weather strip material 13 is made to adsorb | suck to the holding surfaces 38 and 39, and the holding surface 38 And 39, while maintaining the substantially same shape, the weather strip material 13 (hollow seal 16, seal lip 23, shield lip 24, etc.) is immovably fixed to the holding mold 27. .

At this time, the outer surface of the weather strip material 13 (hollow seal portion 16, seal lip 23, shield lip 24, etc.) by suction holes 52 formed in plural portions of the holding surfaces 38, 39. ), The adsorption fixation of the weather strip material 13 (hollow seal 16, seal lip 23, shielding lip 24, etc.) can be performed stably.

After the execution of the negative pressure applying step, the bonding sheet material arrangement step of arranging the bonding sheet material 14 between the terminals facing each other of the weather strip material 13 held by each holding die 27 is performed. In this bonding sheet material arranging step, the bonding sheet material 14 formed of the vulcanizable unvulcanized rubber material is attached to the portion where the weather strip material 13 is arranged in the opposing surface of any one of the holding molds 27. In that case, the bonding sheet | seat material 14 is formed in the shape larger than the cross section of the weather strip material 13, and the said hollow seal part 16 is located in the position corresponding to the hollow seal part 16 in the bonding sheet | seat material 14. A vent hole (see Fig. 7) having a size smaller than the inner shape of the mold is formed.

In addition, you may make it perform the process of retracting the end surface positioning member 46, and the joining sheet material arrangement | positioning process after execution of a negative pressure provision process. Alternatively, before the negative pressure applying step, the step of retracting the cross-sectional positioning member 46 and the bonding sheet material arrangement step may be performed.

After the negative pressure applying step and the bonding sheet material arranging step, the pressing step is performed. In this pressing step, as shown in FIG. 7, each holding die 27 is moved close to each other while the negative pressure is generated between the outer surface of the weather strip material 13 and the holding surfaces 38, 39. 27) (the lower mold 32) is in contact with the positioning stopper 37 to be the closest position. As a result, the terminals of the weather strip material 13 are pressed together by sandwiching the bonding sheet material 14 therebetween, and a compressive force is applied to the terminals of the bonding sheet material 14 and the hollow seal portion 16 in the longitudinal direction. In addition, the bonding sheet | seat material 14 is cut | disconnected along the outer surface of the weather strip material 13 with the blade edge | tip of the cutting blade 44. As shown in FIG. At this time, the bonding sheet member 14 is sandwiched between the cutting blades 44 on both sides in the thickness direction, and is cut simultaneously, thereby cutting the bonding sheet member 14 to one side of the bonding sheet member 14 at the time of cutting the bonding sheet member 14. A biased cutting force does not work, and the position shift of the bonding sheet | seat material 14 can be prevented and it can cut | disconnect correctly.

Subsequently, the portions slightly separated from the holding molds 27 in the hollow seal portions 16 of the respective weather strip materials 13 are each pinched (not shown) in the portions where the hollow volumes on both sides of the bonding sheet material 14 become equal. ) To close the hollow and to press the terminals of the weather strip material 13 (hollow seal portion 16) to each other, so that the on-off valve 63 and the respective constant pressure supply paths 60 of the collective constant pressure supply path 61 are blocked. In addition to the salt, the positive pressure pump 62 is operated. The air is introduced into the hollow portion in the hollow seal portion 16 in each retaining die 27 through the air inlet pipe 58 by the one static pressure pump 62, thereby allowing the air in the hollow seal portion 16 in the retaining mold 27 to pass through. The substantially same static pressure is generated in the hollow portion (that is, the hollow portion in the hollow seal portion 16 on both sides of the bonding sheet material 14). By the positive pressure, the inner surface of the hollow seal portion 16 is pushed toward the outside to compress the outer surface to the holding surfaces 38 and 39 to maintain almost the same shape as the holding surfaces 38 and 39, and the hollow seal portion ( 16) is immovably fixed to the retaining die 27.

At this time, by generating almost the same positive pressure in the hollow portion in the hollow seal portion 16 on both sides of the bonding sheet material 14, the pressure in the hollow seal portion 16 on both sides of the bonding sheet material 14 can be made substantially the same. The outer surface of the hollow seal portion 16 can be press-fixed to the holding surfaces 38 and 39 almost evenly on both sides of the bonding sheet material 14. In addition, by forming the vent hole 65 at a position corresponding to the hollow portion in the hollow seal portion 16 of the bonding sheet material 14, the pressure supplied to the hollow seal portion 16 from both sides of the bonding sheet material 14. Even if a difference has occurred, the pressure in the hollow seal portions 16 on both sides of the bonding sheet material 14 can be made substantially the same by the vent holes 65 of the bonding sheet material 14. Thereby, while preventing the position shift and deformation of the bonding sheet | seat material 14, the hollow seal parts 16 on both sides of the bonding sheet | seat 14 can be hold | maintained in the same shape mutually.

After the pressing process, the joining process is performed. In this joining process, a negative pressure is generated between the outer surface of the weather strip material 13 and the holding surfaces 38 and 39, and the terminals of the weather strip material 13 are pressed against each other and the hollows in the hollow seal portion 16 are reduced. A positive pressure is generated in the portion, and the outer surface of the hollow seal portion 16 is brought into close contact with the holding surfaces 38 and 39 of the holding die 27 for a predetermined time (for example, 10 seconds). As a result, when the bonding sheet material 14 is heated by the conduction heat of the holding mold 27 heated by the heater 43, the Mooney viscosity of the bonding sheet material 14 temporarily decreases, and when the external force is applied, it becomes a state in which flow is possible. .

When the joining sheet material 14 is in a flowable state, a part of the joining sheet material 14 is flowed to remove the core 17 of the attaching part 15, thereby forming a void, a hollow seal part 16, and a seal lip ( 23) into the exposed micropores such as the shielding lip 24 and the like. In addition, vulcanization of the bonding sheet | seat material 14 starts and advances simultaneously. At this time, since the outer surface of the hollow seal portion 16 is in close contact with the holding surfaces 38 and 39 of the holding die 27, even if a part of the bonding sheet material 14 flows, the outer surface and the holding surface 38 of the hollow seal portion 16 are inclined. , 39) is prevented from entering (escape).

Thereafter, the negative pressure pump 56 is stopped, and the open / close valve 57 of the collective negative pressure supply path 55 is closed to introduce atmospheric air into each of the negative pressure supply paths 54, whereby the outer surface of the weather strip material 13 The negative pressure between the holding surfaces 38 and 39 is released. In addition, the static pressure pump 62 is stopped and the on / off valve 63 of the collective constant pressure supply passage 61 and the open / close valve 64 of each of the constant pressure supply passages 60 are closed to wait in each of the constant pressure supply passages 60. The static pressure in the hollow seal portion 16 is released by introducing. Moreover, when vulcanization advances by continuing heating, Mooney viscosity will rise and it will be in the state which the bonding sheet | seat material 14 does not flow.

The negative pressure and the static pressure are released for a predetermined vulcanization completion time (for example, 50 seconds). Thereby, the bonding sheet | seat material 14 is vulcanized by the heat | fever of the holding mold 27 heated by the heater 43, and the cross section (attachment part 15, holding | maintenance part) of the bonding sheet | seat material 14 and the weather strip material 13 is carried out. By vulcanizing the lip 20, the hollow seal 16, the cross lip 23, the shield lip 24, and the like, the cross-sections of the weather strip material 13 are firmly bonded to the bonding sheet material 14. Bond. At this time, the bonding sheet member 14 that enters into the exposed micropores such as the void, the hollow seal 16, the seal lip 23, the shielding lip 24, and the like, formed by removing the core 17 of the attachment portion 15. Anchor action (fixing action by mechanical fitting) is also added, so that the bonding force between the cross sections of the weather strip material 13 through the joining sheet material 14 can be improved in both chemical (vulcanized) and mechanical (anchor) functions. It can be enhanced by a combination of actions. On the other hand, after waiting for the predetermined vulcanization time, the negative pressure and the static pressure may be released.

After execution of the bonding step, the discharge step is executed. In this discharging step, the upper mold 31 of each holding mold 27 is moved to the open position while the negative pressure and the static pressure are released, and the middle mold 33 of each holding mold 27 is rotated to the open position. Each holding mold 27 is opened. Thereafter, all the cross-sections such as the attachment portion 15, the holding lip 20, the hollow seal portion 16, the seal lip 23, the shielding lip 24, and the like are firmly bonded through the bonding sheet material 14. The weather strip material 13 is taken out of the holding mold 27. Thereby, manufacture of the weather strip 12 which joined the terminals of the weather strip raw material 13 is completed.

In the first embodiment described above, when joining the terminals of the weather strip material 13 to each other, a negative pressure is generated between the outer surface of the weather strip material 13 and the holding surfaces 38 and 39 of the holding mold 27, By this negative pressure, the outer surface of the weather strip material 13 (outer surfaces of the hollow seal 16, the seal lip 23, the shielding lip 24, etc.) is adsorbed on the holding surfaces 38 and 39, and the holding surface 38, While maintaining the shape substantially the same as 39, a positive pressure is generated in the hollow portion in the hollow seal portion 16, and the positive pressure causes the outer surfaces of the hollow seal portion 16 to be pressed against the holding surfaces 38 and 39 to hold the holding surface ( In the state maintained in substantially the same shape as 38, 39, the cross section of the weather strip material 13 is joined by the bonding sheet | seat material 14. As shown in FIG. As a result, a step can be prevented from occurring on the outer surface of the joint portion of the hollow seal portion 16, and softened temporarily by heating between the outer surface of the hollow seal portion 16 and the holding surfaces 38 and 39. A part of one bonding sheet | seat material 14 is prevented from entering (leakage), and it can prevent that a burr generate | occur | produces on the outer surface of the joining part of the hollow seal part 16. FIG. Therefore, when the weather strip 12 is attached to the vehicle door opening edge or the like and the door is closed and the door back surface is in close contact with the outer surface of the hollow seal portion 16, the sealing property of the joint portion of the hollow seal portion 16 is lowered. Can be prevented, and also the appearance of the joint can be improved.

In addition, the negative pressure generated between the outer surface of the weather strip material 13 and the holding surfaces 38 and 39 and the positive pressure generated in the hollow seal 16 prevent the hollow seal 16 from being moved relative to the retaining mold 27. Since the cross sections of the hollow seal portions 16 can be joined in a fixed state, the hollow seal portions 16 are displaced relative to the holding mold 27 even if the compression force in the longitudinal direction acts on the hollow seal portions 16 in the joining process. Can be prevented. As a result, an appropriate compressive force can be applied to the bonding sheet material 14 to obtain a good bonding state, and the occurrence of scratches or the like caused by the positional shift of the hollow seal portion 16 can be prevented.

In addition, in the present Example 1, the cross section (at least the cross section of the hollow seal part 16) of the weather strip material 13 cut | disconnects the predetermined set position at the time of setting the weather strip material 13 to each holding mold 27. As shown in FIG. Since it is set as the position which protrudes by the predetermined | prescribed dimension G (for example, 0.1-2.0 mm) from the blade edge of the blade 44, it can join in the state which carried out the compression elastic deformation of the terminal of the hollow seal part 16 in the longitudinal direction at the joining process. Can be. As a result, the cross section of the hollow seal portion 16 is not a flat surface perpendicular to the longitudinal direction due to variations in the shape of the cross section (cut surface) of the hollow seal portion 16, and the cross sections are precisely parallel to each other. Even if it is not, the whole end surface of the hollow seal part 16 can be stuck by the bonding sheet | seat material 14, and the part in which the bonding sheet material 14 is not filled does not generate | occur | produce, and the whole cross section of the hollow seal part 16 is not carried out. It can join favorably. After the joining is completed, the terminal portions of the hollow seal portion 16 are in a state of being pushed together by the elastic repulsive force, so that peeling or cracking does not occur at the joining portion during use. Moreover, since the width | variety of a junction part can be narrowed, decoration property is improved.

On the other hand, in the first embodiment, while generating a negative pressure on the outer surface of the weather strip material 13, and generates a positive pressure in the hollow seal portion 16, a negative pressure is generated on the outer surface of the weather strip material (13) In the hollow seal part 16, you may prevent it from generating a static pressure. Alternatively, positive pressure may be generated in the hollow seal portion 16, and negative pressure may not be generated on the outer surface of the weather strip material 13. In any case, it is possible to prevent a step or burr from occurring on the outer surface of the joining portion of the hollow seal portion 16, and to improve the sealability and appearance of the joining portion of the hollow seal portion 16.

Embodiments 2 and 3 of the present invention will be described below with reference to FIGS. 8 and 9. However, the same parts as those of the first embodiment will be denoted by the same reference numerals to simplify the description, and different parts from the first embodiment will be mainly described.

(Example 2)

In the first embodiment, the present invention is applied to the joining of the weather strip material 13 in which the substantially hollow tubular seal portion 16 is provided at the proximal ends of both side walls 18 and 19 of the attachment portion 15. In the present Example 2 shown to the present invention, this invention is applied to the joining of the weather strip material 66 which provided the substantially hollow tubular seal part 16 (piece part) in the vehicle outer side wall 18 of the attachment part 15, When the terminals of the weather strip material 66 are bonded to each other, a negative pressure is generated between the outer surface of the weather strip material 66 and the holding surfaces 38 and 39, and a positive pressure is applied to the hollow portion in the hollow seal 16. To generate. On the other hand, the negative pressure may be generated on the outer surface of the weather strip material 66, and the positive pressure may not be generated in the hollow seal portion 16. Alternatively, positive pressure may be generated in the hollow seal portion 16, and negative pressure may not be generated on the outer surface of the weather strip material 66.

Also in the present Example 2, a level | step difference and a burr can be prevented from generate | occur | producing on the outer surface of the junction part of the hollow seal part 16, and the sealing property and external appearance of the junction part of the hollow seal part 16 can be improved.

(Example 3)

In Examples 1 and 2 described above, the present invention is applied to the bonding of the weather strip materials 13 and 66 in which the tubular hollow seal portion 16 is provided in the attachment portion 15, but this embodiment shown in FIG. In 3, the present invention is applied to the joint of the weather strip material 68 provided with the non-hollow seal portion 67 (shape portion) having no hollow portion on the vehicle outer side wall 18 of the attachment portion 15, and the weather strip. When joining the terminals of the raw materials 68, negative pressure is generated between the outer surface 67a of the non-hollow seal portion 67 and the holding surfaces 38, 39.

Also in the third embodiment, it is possible to prevent a step or burr from occurring on the outer surface 67a of the joint portion of the non-hollow seal portion 67, and to prevent the deterioration of the sealing property of the joint portion of the non-hollow seal portion 67. Can also improve the appearance.

On the other hand, in each of the above embodiments 1 to 3, when negative pressure is generated between the outer surface and the holding surface of the weather strip material, it is not necessary to necessarily generate negative pressure on the entire outer surface of the weather strip material, and at least the hollow seal portion 16 (Or the negative hole seal portion 67) may be caused to generate a negative pressure. In addition, you may make it generate negative pressure only in the part used as the real surface in the outer surface of the hollow seal part 16 (or the non-hollow seal part 67).

In Examples 1 to 3, the upper mold holding surface 38 (the support 16b side of the hollow seal 16) and the lower mold retaining surface 39 (hollow seal 16) of each retaining mold 27 are shown. The suction holes 52 were formed on both sides of the vehicle inner seal portion 16a, but the suction holes were formed only on the lower mold holding surface 39 (the vehicle inner seal portion 16a side of the hollow seal portion 16) holding the seal surface side. 52) may be formed.

In addition, the holding surface of the holding mold is made of a porous material such as a sintered metal, and by sucking air through the porous material, a negative pressure is applied between at least the outer surface of the hollow seal portion 16 (or the non-hollow seal portion 67) and the holding surface. May be generated. In this way, at least the outer surface of the hollow seal part 16 (or the non-hollow seal part 67) can be adsorb | sucked on the whole holding surface, and the adsorption | suction fixing of the hollow seal part 16 (or non-hollow seal part 67) is further carried out. It can be performed stably.

In addition, the tip of the scanning shape of the air intake pipe 58 was stuck to the outside of the hollow seal portion 16 of the weather strip material 13 so as to form the insertion hole 59, but the inside of the hollow seal portion 16 was formed. The insertion hole 59 may be formed in the groove. In this way, when the back door 22 comes in contact with the hollow seal 16 of the weather strip 12 attached to the back door opening edge of the vehicle body panel 11 and closes, the rain water or the like enters the insertion hole 59. It can prevent.

In Examples 1 to 3, the bonding sheet material was formed of unvulcanized rubber, and the bonding sheet material and the weather strip material were vulcanized. However, the bonding sheet material was formed of TPO (thermoplastic elastomer), PE (polyethylene), You may form with thermoplastic resins, such as PP (polypropylene), and heat-bond together a joining sheet material and a weather strip material. In this case, when joining a joining sheet material and a weather strip material, it is sufficient only to cool after heat-melting a joining sheet material, and vulcanization is unnecessary, and a joining sheet material and a weather strip material can be joined for a short time. .

In addition, in each of the above embodiments 1 to 3, the predetermined set position at the time of setting the weather strip material to each holding mold was set to the position where the cross section of the weather strip material protruded by the predetermined dimension G from the cutting edge of the cutting blade. It is not limited to this, A predetermined set position may be made into the position where the cross section of a weather strip material substantially corresponds with the blade edge of a cutting blade. In addition, at least one holding mold may be fixed and the other holding mold may be movable.

In addition, although the cutting blade was provided in the holding surface of each holding type | mold in each said Example 1-3, you may provide a cutting blade only in the holding surface of either holding type | mold.

In addition, in each said Example 1-3, although the joining sheet material was cut | disconnected with a cutting blade, you may form a cutting line in the joining sheet material with a cutting blade, and remove a surplus part later.

In addition, the scope of application of the present invention is not limited to the weather strip mounted to the opening edge of the back door of the vehicle, the opening and closing door of the side of the vehicle, the opening and closing door of the cold storage vehicle, opening and closing lid of the refrigerator, opening and closing door of the thermal storage warehouse You may apply this invention to the weather strip attached to the opening edge of a back.

In addition, the joining direction of a junction part is not limited to a linear form, You may cross and join at a predetermined angle of a nonlinear form.

According to the present invention, it is possible to prevent a step or a burr from occurring in the joint portion of the hollow seal portion of the weather strip, thereby preventing the deterioration of the sealing property of the joint portion of the hollow seal portion, and further improving the appearance. Can be.

Claims (16)

Cross sections of the sections are inserted by sandwiching the joining sheet material between terminals of a single or a plurality of long vulcanized rubber-like weather strip materials having elastically deformable strip portions. As a method of manufacturing a weather strip bonded to A pair of retaining molds for holding the terminal of the weather strip material are arranged so as to be accessible and separated from each other, and a cross-sectional positioning member for positioning the cross section of the weather strip material is opposed to the pair of retaining molds. It is arrange | positioned so that a movement is possible between the position which protrudes between surfaces, and the position which retracts between the opposing surfaces, The said pair of holding | maintenance types become a movable type and a fixed type which are installed so that opening and closing is possible, and Each of the inner surfaces of the movable die and the stationary die is provided with a holding surface for holding the jaw portion, and at least one of the movable die and the stationary die is provided with a negative pressure supply passage therein. The holding surface of the die is provided with a plurality of suction holes communicating with the negative pressure supply passage in the circumferential direction and the longitudinal direction of the stem portion. , And projecting toward the other side has at least one of opposite surfaces of the holding type of the pair of the cutting edge is used a bonding device provided along the end portion of the holding surface, The cross section of the said slab part is cut | disconnected by protruding the said cross-section positioning member between the opposing surfaces of the said pair of holding | maintenance types, and making the cross section of the said weather strip material contact the said cross-section positioning member in the state which opened both holding | maintenance types. A set step of setting the weather strip material to the fixed type so as to be at a predetermined set position coinciding with or near the edge of the blade; Air is sucked through the suction hole from the negative pressure supply passage in a state where the pair of holding molds are closed, and a negative pressure lower than atmospheric pressure is generated between the holding surface on which the suction hole is formed and the outer surface of the strip portion. A negative pressure imparting step of adsorbing the outer surface of the cladding portion to the holding surface while generating a negative pressure and immovably fixing the cladding portion to the holding mold in a longitudinal direction; Retracting the end face positioning member between the pair of holding surfaces facing each other; Bonding sheet material arrangement | positioning process of arrange | positioning the said bonding sheet material between the opposing terminals of the weather strip material hold | maintained at the said pair of holding | maintenance types, The pair of retaining molds are sandwiched between the holding sheet members in a state in which the outer surface of the cladding portion is brought into close contact with the holding surface by the adsorption, and the slab portion is fixedly immovably fixed to the holding surface in the longitudinal direction. By pressing the terminals of the strip portions against each other, a compression force is applied to the bonding sheet material and the terminals of the strip portion in the longitudinal direction, and the cutting sheet material is cut along the outer surface of the strip portion with the cutting blade. Or a pressing step of forming a cutting line in the bonding sheet material; The joining sheet material is pressed in a state in which the terminals of the cladding portions are pressed against each other while the outer surface of the cladding portion is brought into close contact with the holding surface by the adsorption and the clamping portion is fixedly immovably fixed to the holding surface in a longitudinal direction. A joining step of joining the cross sections of the clad portion through the joining sheet material by softening by heating and softening so as to flow; And discharging the retaining mold after releasing the negative pressure to take out the weather strip material to which the strip is joined from the retaining mold. The method of claim 1, wherein the slab is formed in a tube shape, Ventilation holes are formed in advance at positions corresponding to the hollow portions in the cladding portion of the joining sheet material, and allow air to flow on both sides of the joining sheet material through the venting holes, and maintain the air pressure on both sides of the joining sheet material. Configured to In the pressing step, the pair of holding dies are brought close to each other in a state where a negative pressure is generated between the outer surface and the holding surface of the platen portion, and the terminals of the platen portion are pressed together by sandwiching the bonding sheet material therebetween. While exerting a compressive force in the longitudinal direction on the bonding sheet member and the terminal of the strip portion, and cutting the bonding sheet material along the outer surface of the strip portion with the cutting blade or forming a cutting line in the bonding sheet material, By pressurizing the terminals of one piece to each other, a positive pressure higher than atmospheric pressure is generated in the hollow portion of the platen portion to squeeze the outer surface of the platen portion to the holding surface and the platen portion to the holding type. Fixed immovable, In the joining step, the bonding sheet is generated in a state in which a negative pressure is generated between the outer surface and the holding surface of the slab portion, the terminals of the slab portion are pressed against each other and a positive pressure is generated in the hollow portion in the slab portion. Heating the ash and softening it in a flowable manner to join the cross sections of the strip portions through the bonding sheet material, In the discharging step, after the negative pressure and the positive pressure are released, the holding mold is opened to take out the weather strip material to which the wedge portion is joined from the holding mold. A method for producing a weather strip in which cross sections of the sections are joined by sandwiching a joining sheet material between terminals of a single or a plurality of long vulcanized rubber weather strip materials having elastic tubular sections. As a method, A pair of retaining molds for holding the terminal of the weather strip material are arranged so as to be accessible and separated from each other, and a cross-sectional positioning member for positioning the cross section of the weather strip material is opposed to the pair of retaining molds. It is disposed so as to be movable between a position protruding between the surfaces and a position to evacuate between the opposing surfaces, the pair of holding molds are movable and fixed to be opened and closed, each inner surface of the movable and the fixed mold In each of the holding surface for holding the holding portion is formed, at least one of the pair of holding surfaces of the pair is used a joining device provided along the end of the holding surface is a cutting blade protruding toward the other side , Ventilation holes are formed in advance at positions corresponding to the hollow portions in the cladding portion of the joining sheet material, and allow air to flow on both sides of the joining sheet material through the venting holes, and maintain the air pressure on both sides of the joining sheet material. Configured to The cross section of the said slab part is cut | disconnected by protruding the said cross-section positioning member between the opposing surfaces of the said pair of holding | maintenance types, and making the cross section of the said weather strip material contact the said cross-section positioning member in the state which opened both holding | maintenance types. A set step of setting the weather strip material to the fixed type so as to be at a predetermined set position coinciding with or near the edge of the blade; Closing the pair of holding molds to arrange the cladding portions between the holding surfaces; Retracting the end face positioning member between the pair of holding surfaces facing each other; Bonding sheet material arrangement | positioning process of arrange | positioning the said bonding sheet material between the opposing terminals of the weather strip material hold | maintained at the said pair of holding | maintenance types, Approach the pair of retaining molds to sandwich the joining sheet material between each other to press the terminals of the cladding portion together to exert a compressive force in the longitudinal direction on the joining sheet material and the terminals of the cladding portion, The bonding sheet material is cut along the outer surface of the carving portion, or a cutting line is formed in the bonding sheet material, and a positive pressure higher than atmospheric pressure is generated in the hollow portion in the carving portion while the terminals of the carving portion are pressed together. A pressing and static pressure imparting step of pressing the outer surface of said cladding part to said holding surface and fixing said cladding part so as to be immovable with respect to said holding type; While pressing the terminals of the cladding portion to each other and heating the joining sheet material in a state in which a positive pressure is generated in the hollow portion in the cladding portion, the softened fluidly and softly so that the cross sections of the cladding portions are connected to each other through the joining sheet material. Joining process to join, And a discharge step of opening the holding die and releasing the weather strip material bonded to the strip part from the holding die after releasing the static pressure. The negative pressure supply passage is formed inside both the movable mold of the holding mold and the fixed mold, and suction holes are formed in a plurality of portions of the holding surfaces of both molds. And sucking the air through the suction hole to suck the outer surface of the movable side and the outer side of the fixed side to the respective holding surfaces together. The retaining surface of the holding mold is formed of a porous material having a myriad of micro adsorption holes, and the air is sucked through the myriad micro adsorption holes of the porous material, thereby maintaining A negative pressure is generated between the holding surfaces. The manufacturing method of the weather strip of Claim 2 or 3 which generate | occur | produces the same static pressure in the hollow part in the said slab part on both sides of the said bonding sheet | seat material. The method for manufacturing a weather strip according to claim 2 or 3, wherein the ventilation hole of the joining sheet member is formed to a size not exceeding the size of the inner shape of the hollow portion in the cladding portion. The method for manufacturing a weather strip according to claim 6, wherein the ventilation hole of the joining sheet material is formed to a size not exceeding the size of the inner shape of the hollow portion in the cladding portion. The said cladding part is formed from the sponge rubber which has a myriad of microholes, In the joining step, a part of the joining sheet material is allowed to enter into the microhole of the jaw portion at the time of temporarily softening by heating. The said bonding sheet | seat material is formed of unvulcanized rubber in any one of Claims 1-3, In the joining step, the joining sheet material and the slab part are vulcanized and joined. The said bonding sheet | seat material is formed of a thermoplastic resin in any one of Claims 1-3, In the joining step, the joining sheet material and the slab are joined by heat fusion. The said strip | belt strip material as described in any one of Claims 1-3 in which the said holding | maintenance type | mold approaches the said holding | maintenance type so that the said end surface positioning member may be sandwiched between the opposing surfaces of the said pair of holding | maintenance types in the said set process. The weather strip material is slid in the direction of the cross-section positioning member by arranging the weather strip material in the fixed shape such that the cross section of the blade is retracted from the cutting edge of the cutting blade. A method for manufacturing a weather strip, wherein the weather strip material is set at the predetermined set position by contacting the end face positioning member. The said strip | belt material of any one of Claims 1-3 in which the said holding | maintenance type is spaced apart by protruding the said cross-section positioning member between the opposing surfaces of a pair of holding molds in the said set process. In the state where the weather strip material is placed in the fixed mold so that the cross section of the cutting edge protrudes from the cutting edge of the cutting edge, the pair of holding molds are moved close to contact the cross section of the weather strip material in contact with the cross-sectional positioning member. And the weather strip material is set back at the predetermined position by moving the weather strip material relative to the holding mold by moving the holding mold in close proximity with the end face of the weather strip material in contact with the end face positioning member. Method of making the strip. The method of manufacturing a weather strip according to any one of claims 1 to 3, wherein the predetermined set position is a position where a cross section of the cutting portion protrudes from 0.1 mm to 2.0 mm below the cutting edge of the cutting blade. . The cutting blade according to any one of claims 1 to 3, wherein cutting blades are formed on both opposing surfaces of the pair of holding molds, and the cutting sheet material is cut along both sides of the cladding portion in the thickness direction. Method for producing a weather strip characterized by cutting with a blade. The said weather strip material is an attachment part attached to a skin-attachment part, the said slab part which protrudes from the said attachment part, and forms a seal part, The said skin-attachment part in any one of Claims 1-3. And a seal lip sealing a gap between the attachment portion and the attachment portion, In the joining step, a method of manufacturing a weather strip, wherein all of the end faces of the attachment portion, the jaw portion, and the seal are joined together through the bonding sheet material.
KR1020070005099A 2006-06-15 2007-01-17 Method for manufacturing weather strip KR100942361B1 (en)

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KR101452717B1 (en) * 2013-06-11 2014-10-22 허태업 Manufacturing method of wehther strip

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JP2001171441A (en) * 1999-12-16 2001-06-26 Toyo Tire & Rubber Co Ltd Weatherstrip connecting material mold, weatherstrip connecting method and weatherstrip

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JP2001171441A (en) * 1999-12-16 2001-06-26 Toyo Tire & Rubber Co Ltd Weatherstrip connecting material mold, weatherstrip connecting method and weatherstrip

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KR20220162257A (en) * 2021-06-01 2022-12-08 (주)제이더블유이엔지 Manufacture apparatus of weather strip and the weather strip manufactured therefrome
KR102565452B1 (en) * 2021-06-01 2023-08-11 (주)제이더블유이엔지 Manufacture apparatus of weather strip and the weather strip manufactured therefrome

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