JP2011057107A - Core, method and apparatus for manufacturing the same, and method for manufacturing trim material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably cut a weather strip with a core buried therein at a predetermined position of the core when cutting the weather strip. <P>SOLUTION: A core piece portion 22, a connecting portion 23, and a separation space portion 24 are formed by performing punching for removing a portion that becomes the separation space portion 24 so as to leave a portion that becomes the core piece portion 22 and a portion that becomes the connecting portion 23 every time a core material is moved and stopped by intermittently moving it in a longitudinal direction. A core piece portion for cutting 25 having a larger dimension than the dimension of the core piece portion 22 in the longitudinal direction of a core 16 is formed by stopping the core material after moving it a predetermined movement amount in the longitudinal direction, with the punching temporarily stopped every time the movement length of the core material reaches a predetermined value corresponding to a predetermined length, and then by resuming the punching. Thus, when cutting the weather strip with the core 16 buried therein, the weather strip can be stably cut at the position of the core piece portion for cutting 25 in the core 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a core material embedded in a trim material, a method for manufacturing the core material, a manufacturing apparatus, and a method for manufacturing a trim material in which the core material is embedded.

  In general, a long trim material is attached to a flange of a door opening edge or window opening edge of a vehicle such as an automobile along the flange. This trim material is extruded by a polymer material such as rubber or thermoplastic synthetic resin (including thermoplastic elastomer) into a shape having a mounting portion having a substantially U-shaped cross section. The flange of the opening edge is fixed to the flange by sandwiching it from both sides. Such trim material reinforces the attachment portion with the core material by embedding and integrating a reinforcement core material (for example, a core material formed of a band-shaped metal plate such as a cold-rolled steel plate) in the attachment portion. Thus, the mounting portion can be stably fixed to the flange of the opening edge.

  Further, since the flanges of the door opening edge and window opening edge of the vehicle are bent two-dimensionally or three-dimensionally in the longitudinal direction, the trim material is formed in a substantially linear shape by extrusion molding. It is bent and fitted according to the bent shape of the flange. For this reason, the core material embedded in the trim material is provided with a plurality of core material pieces and separation space portions alternately in the longitudinal direction so that the core material can be bent freely following the bending of the trim material. The core material (it may also be called a fishbone core material and a keel core material) which connected the shape by the connection part is used.

  By the way, the trim material is embedded by integrating the core material by extrusion molding of a polymer material, and then cut into a predetermined length so as to match the length of the flange of the door opening edge or window opening edge of the vehicle. used. However, the dimensions of the separation space and core piece in the longitudinal direction of the core material are relatively small, and the separation space and core piece of the core material embedded in the trim material cannot be visually recognized from the outside. When cutting the material, it is difficult to keep the relationship between the cutting position of the trim material and the separation space part of the core material and the core material piece part constant, and at the position of the connecting part (position of the separation space part) If it is cut or cut at the position of the core piece, and if the core piece is non-perpendicular to the longitudinal direction of the trim material, it is cut across the connecting part and the core piece Sometimes. For this reason, every time the trim material is cut, there is a problem that the angle and shape of the cut end face fluctuate unexpectedly.

  Therefore, as described in Patent Document 1 (Japanese Patent Laid-Open No. 11-32480), a core material (core) in which a plurality of bone pieces are provided at predetermined intervals in the longitudinal direction, and these bone pieces are connected by a connecting portion. In the gold), the bone piece at the planned cutting position is excised to form a long connection portion to form a long interval portion, and a trim material (core metal insert trim) is formed at the position of the long interval portion (position of the long connection portion). ) Is cut off.

  Further, as described in Patent Document 2 (Japanese Patent Laid-Open No. 2003-40045), a plurality of blade pieces are provided at predetermined intervals in the longitudinal direction, and a core material in which these blade pieces are connected by a connecting portion. In (Insert), there is a type in which a blade portion at a scheduled cutting position is cut out to form a cutout portion, and a trim material (weather strip) is cut at the position of the cutout portion.

Japanese Patent Laid-Open No. 11-32480 (FIG. 2 etc.) JP 2003-40045 A (FIG. 4 etc.)

  However, the core materials of Patent Documents 1 and 2 are cut in order to cut the bone pieces and wing pieces at the planned cutting position in the longitudinal direction to form a space portion for cutting (long interval portion and notch portion). In the portion where the space portion is formed, there is substantially no edge (bone piece or wing piece portion) in the width direction of the core material. For this reason, when trim material is manufactured (for example, when a core material is formed into a predetermined cross-sectional shape with a roll forming device or while a core material is supplied to an extrusion mold, a trim material is supplied by supplying a polymer material. In this case, the edge in the width direction of the core material cannot be guided (guided) in the manufacturing apparatus, and the core material may be displaced in the width direction at the position of the space portion.

  Accordingly, the problem to be solved by the present invention is that when the trim material with the core material embedded therein is cut, the trim material can be cut into a stable shape and angle at a predetermined position of the core material, and the trim material is manufactured. In this case, the core material can be prevented from being displaced in the width direction.

  In order to solve the above-mentioned problem, the invention according to claim 1 is formed of a long strip-shaped core material, and a plurality of core material pieces arranged at predetermined intervals along the longitudinal direction; A polymer for forming a trim material when forming a long trim material, having a connecting portion for connecting the plurality of core material pieces and a separating space provided between adjacent core pieces. A core material for a trim material that is embedded in the trim material by being covered with the material and integrated into the trim material and then cut to a predetermined length. The core material is a core material for each position corresponding to the predetermined length. The cutting | disconnection core material piece part of a dimension larger than the dimension of a core material piece part is formed in the longitudinal direction of material, and the 1st range by which the core material piece part and the separation space part were alternately arrange | positioned by the predetermined space | interval The portion and the second range portion where the cutting core pieces are arranged are alternately provided, and the first range in the longitudinal direction of the core material Than the partial length dimension is obtained by a small configuration towards the length of the second range portion.

  In this way, when cutting the trim material in which the core material is embedded, the trim material is cut at the position of the cutting core material piece having a size larger than the size of the core material piece portion of the core material. The trim material can be stably cut at a predetermined position (core piece for cutting) of the core material. Further, when the trim material is cut at a position within the longitudinal direction of the cutting core piece, the cut portion is always the same shape, so that a trimmed end face of the trim material cut at a stable shape and angle can be obtained. . In addition, since the cutting core piece having the same width as the core material is exposed on the cut end face of the trim material, the polymer is used when it is necessary to remove the cutting core piece in the longitudinal direction and remove it. There is no mechanical engagement (hooking) of the material, and the cutting core piece can be easily pulled out and removed. Further, the portion where the core part for cutting is formed also has an edge in the width direction of the core material. Therefore, when the trim material is manufactured (for example, the core material is formed into a predetermined cross-sectional shape with a roll forming device). When forming or extruding the trim material by supplying the polymer material while supplying the core material to the extrusion mold), the edge in the width direction of the core material can be guided (guided) in the manufacturing apparatus. It is possible to prevent the core material from being displaced in the width direction.

  In this case, as in claims 2 and 14, cutting is performed so that the length of the cutting core piece in the longitudinal direction of the core is not less than twice the length of the core piece. It is good to form a core material piece. If it does in this way, the trim material with which the core material was embed | buried can be reliably cut | disconnected by the core material piece part for cutting of a core material.

  Furthermore, as in claim 3, the dimension of the first range portion in the longitudinal direction of the core material is preferably formed to be 10 times or more the dimension of the second range portion. If it does in this way, the 1st range part can be made moderately long with respect to the 2nd range part, and it can apply to the core material for almost all trim materials actually used.

  Further, as in claim 4, it is preferable to form the connecting portion and the core piece portion with the same thickness. In this way, the thickness dimension can be made uniform between the connecting portion of the core material and the core material piece portion, and since there is no difference in the strength of the core material, there will be no trouble when it is bent later. .

  Further, as in claim 5, it is preferable to form the cutting core piece so that the size of the cutting core piece is the same as the dimension of the core piece in the width direction of the core. In this way, when the trim material is manufactured (for example, when the core material is formed into a predetermined cross-sectional shape with a roll forming apparatus or while the core material is supplied to the extrusion mold, the trim material is supplied with the polymer material. When the material is extruded, it is possible to prevent misalignment in the width direction of the core material and catching in the apparatus.

  Further, as in claim 6, the connecting portion may be formed in one example along the longitudinal direction of the core material, or, as in claim 7, the connecting portion is aligned in the longitudinal direction of the core material. Alternatively, they may be formed in a plurality of rows in parallel with each other.

  Furthermore, as in claims 8 and 13, a breakage generating portion that facilitates breakage of the connecting portion at or near the boundary between the first range portion and the second range portion of the connecting portion is provided in the width direction of the core material. You may form along. In this way, after cutting the trim material in which the core material is embedded at the core material cutting portion of the core material, the cutting core material portion that is exposed at the cutting end of the trim material is removed. The connecting portion connected to the core member piece for cutting can be easily broken while maintaining the accurate position at the breakage generating portion, and the cutting core member piece portion can be extracted.

  When manufacturing the core material, as in claim 9, the core material is intermittently moved in the longitudinal direction, and becomes a core material piece of the core material every time the core material is stopped moving. The core material piece moving part, the connecting part and the separating space part are formed by punching to remove the part that becomes the separating space part so as to leave the part and the part that becomes the connecting part, and the moving length of the core material When the core material is moved by a predetermined amount of movement in the longitudinal direction in a state in which the punching process is temporarily stopped every time when a predetermined value corresponding to the predetermined length L1 is reached, the punching process is resumed by stopping. A core material forming step for forming a cutting core material piece having a length dimension A larger than the length dimension of the core material piece part in the longitudinal direction of the core material is performed, and the core material piece part and the separation space part are Alternately arranged first range portions and second range portions where cutting core pieces are arranged alternately It may be to so that. If it does in this way, the core material which has the core part piece for cutting by punching can be manufactured easily.

  In this case, as in claim 10, in the core material forming step, the length obtained by subtracting the length dimension A of the core material piece for cutting from the predetermined length L1 in the longitudinal direction every time punching is performed. After moving by a basic movement amount L2 that is less than (L1-A), it is stopped and punched once so that the core piece piece, the connecting portion, and the separation space portion are arranged within a range of the basic movement amount L2. The number of punching processes reaches a predetermined number N, and the total moving length of the core material is a length obtained by subtracting the length dimension A of the cutting core piece from the predetermined length L1. When the length just before (L1-A) is reached (L2 × N), the core material is moved in the longitudinal direction by an adjustment movement amount L3 that is less than the basic movement amount L2, and then stopped and punching is performed 1 The core piece part, the connecting part, and the separation space are within the range of the adjustment movement amount L3 A first step of forming a first range portion and a predetermined amount of movement that exceeds the basic amount of movement L2 in the longitudinal direction in a state where the punching process is temporarily stopped after the first step ( L2 + A) is moved and then stopped and the punching process is restarted to repeat the second step of forming the cutting core piece and providing the second range portion, and the adjustment movement amount L3 is (L1-L2 × N-A) may be set.

  In this way, even if the basic movement amount L2 (that is, the range in which the core piece portion, the coupling portion, and the separation space portion can be formed by a single punching process) is constant, the adjustment movement amount L3 is adjusted so that the predetermined length A cutting core piece can be formed for each position corresponding to the length L1, and various cores having different cutting lengths can be manufactured. When the trim material is cut to a predetermined length L1, the trim material corresponding to the length of the cutting blade is used as the end material. In this application, the thickness of the cutting blade is ignored. Yes. Therefore, in practice, the cutting length L1 may be set to a length obtained by adding the length of the end material.

  By the way, after repeating the punching process by moving the core material by the basic movement amount L2, when the punching process is performed by moving the core material by the adjustment movement amount L3 lower than the basic movement amount L2, Since a part that is punched by the punching process becomes a “blank punching” in which the punch is passed again by the punching process this time, there is a possibility that a biased load is applied to the press device that performs the punching process.

  Therefore, as in the eleventh aspect, in the core material forming step, the length obtained by subtracting the length dimension A of the core material piece for cutting from the predetermined length L1 in the longitudinal direction every time punching is performed ( The core piece is within the range of the basic movement amount L2 by performing the punching once after being moved by the basic movement amount L2 having a length less than L1-A) and within the tolerance of the predetermined length L1. The processing of forming a predetermined number of the connecting portion and the separation space portion is the total length of the range in which the core piece portion, the connection portion, and the separation space portion are formed from the predetermined length L1 of the cutting core piece portion. The first step of providing the first range portion by repeatedly performing a predetermined number of times N reaching the length immediately before the length (L1-A) obtained by subtracting the length dimension A, and the punching process is temporarily performed after the first step. The core material is moved in the longitudinal direction with the basic movement amount L2 in a state of being stopped. (L2 + A) only may be to stop repeating the second step of forming a second range portion to form a cutting core pieces by resuming punching after moving.

  In this way, it is possible to produce a trim material whose cutting length is within an allowable tolerance without causing “blank punching” in which the punched portion is passed through the punched portion in the current punching process.

  Further, as in claim 12, in the core material forming step, a separation space portion that passes through the detection position of the detector by a detector disposed near or in contact with the core material movement path and / or The movement length of the core material may be detected by counting the number of core material pieces. In this way, the moving length of the core material can be easily and accurately detected.

  Further, as in claims 15 and 21, the core material in which the separation space portion, the core material piece portion and the connecting portion are formed and the cutting core material piece portion is formed is wound around the core material reel. Also good. In this way, the core material can be efficiently manufactured at an optimum speed without being restricted by the speed of the trim material extrusion, and the core material can be wound around the core material reel.

  When the trim material is manufactured, the cutting core material having a length dimension larger than the length dimension of the core material piece portion in the longitudinal direction of the core material at each position corresponding to the predetermined length as in the sixteenth aspect. By forming the pieces, first range portions where the core piece portions and separation space portions are alternately arranged and second range portions where the cutting core piece portions are arranged are alternately provided. The core material preparation step for preparing a core material (hereinafter referred to as “molding core material”) having a length dimension of the second range portion smaller than that of the first range portion in the longitudinal direction of the core material Then, while continuously supplying the molding core material in the longitudinal direction to the extrusion mold for molding the trim material, the polymer material is supplied to the extrusion mold and the trim material is extruded to form the polymer core material. And extrusion molding process in which the core material for molding is embedded in the trim material and the polymer material of the trim material A step of curing or solidifying the portion, and moving the trim material in the longitudinal direction to detect the position of the cutting core material piece portion of the molding core material embedded in the trim material, and the cutting core material piece portion It is preferable to execute a cutting step of cutting the trim material within the range of the length dimension.

  In this way, the trim material in which the core material is embedded can be stably cut within the length dimension of the core material cutting piece of the core material, and the angle and shape of the trimmed end face of the trim material Can be kept constant without unforeseen fluctuations.

  In this case, as in the seventeenth aspect, in the molding core material preparation step, a step of unwinding and feeding the molding core material from the core material reel around which the molding core material is wound may be executed. In this way, the trim material is manufactured under conditions suitable for the production of the trim material using the molding core material manufactured on a separate line from the trim material production line, without being restricted by the factors of the core material production line. be able to.

  Alternatively, a core material forming step for forming a molding core material may be executed in the molding core material preparing step. If it does in this way, the core material for shaping | molding in which the separation space part, the core material piece part, and the connection part were formed and the cutting core material piece part was formed can be formed in the production line of a trim material. .

  In addition, as in claim 19, in the core material forming step, the molding core material in which the cutting core material pieces are formed for each position corresponding to the first predetermined length is produced by a predetermined number of trim materials. After that, the molding core material in which the cutting core material pieces are formed for each position corresponding to the second predetermined length different from the first predetermined length is manufactured by the predetermined number of trim materials. May be. In this way, after a predetermined number of trim materials to be cut to the first predetermined length are manufactured, only a predetermined number of trim materials to be cut to the second predetermined length without replacing the core material. Can be manufactured.

  An apparatus for producing a core material as in claim 20 leaves a moving means for moving the core material in the longitudinal direction, and a portion of the core material that becomes a core material piece and a portion that becomes a connecting portion. The punching means for performing the punching process to remove the portion that becomes the separation space portion, the detecting means for detecting the moving length of the core material and / or the number of punching processes, and the core based on the detection result of the detecting means The core material is moved intermittently in the longitudinal direction and punched every time the core material is stopped to form a core material piece, a connecting portion, and a separation space, and the length of movement of the core material Each time the core material reaches a predetermined value corresponding to a predetermined length, the punching process is temporarily stopped, the core material is moved by a predetermined movement amount in the longitudinal direction, and then stopped to restart the punching process. Than the length of the core piece in the longitudinal direction of the material It may be configured to include a controller for controlling the moving means and stamping means to form a cutting core pieces of the hearing length. If it does in this way, the core material which has the core part piece for cutting by punching can be manufactured easily.

  According to a twenty-second aspect of the present invention, the moving means includes a roller provided on the upstream side and the downstream side of the punching means for moving the core material in the longitudinal direction by rotating the core material from both sides. It is preferable that the rotation amount of the roller be controllable. In this way, the movement amount of the core material can be controlled by controlling the rotation amount of the roller.

  Alternatively, as in claim 23, the moving means has a grip feeder that moves the core material in the longitudinal direction by sliding the core material from both sides, and the amount of movement of the grip feeder is It may be controllable. In this way, the amount of movement of the core material can be controlled by controlling the amount of movement of the grip feeder.

FIG. 1 is a view showing a state in which a weather strip according to Embodiment 1 of the present invention is mounted along a door opening edge. FIG. 2 is a plan view of the core material. FIG. 3 is a plan view of a first range portion of the core material. FIG. 4 is a plan view of the second range portion of the core material and its peripheral portion. FIG. 5 is a schematic configuration diagram of the first half of the weather strip manufacturing apparatus. FIG. 6 is a schematic configuration diagram of the latter half of the weather strip manufacturing apparatus. FIG. 7 is a diagram illustrating an execution example of the core material forming process of the first embodiment. FIG. 8 is a view of the extrusion mold viewed from the downstream side. FIG. 9 is a view of the detector and its peripheral portion as viewed from the upstream side. FIG. 10 is a side view of the cutting device and its peripheral part. FIG. 11 is a diagram illustrating a cutting core piece removing step. FIG. 12 is a diagram (part 1) illustrating an execution example of the core material forming process of the second embodiment. FIG. 13 is a diagram (part 2) illustrating an execution example of the core material forming process of the second embodiment. FIG. 14 is a plan view of a core material in a modification of the first and second embodiments.

  Hereinafter, some embodiments embodying the mode for carrying out the present invention will be described.

A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a long weather strip 12 (trim material) is attached to the flange 11 of the door opening edge (front door opening edge or rear door opening edge) on the side of the vehicle body panel along the flange 11. Is done. The flange 11 at the opening edge of the front door is mounted with two weather strips 12 (for example, a weather strip 12a having a full length L1a and a weather strip 12b having a full length L1b) connected via a connection corner portion 13. The terminals on the opposite side to the connection corner portion 13 of each weather strip 12 are abutted and joined. On the other hand, one weather strip 12 (for example, a weather strip 12c having an overall length L1c) is attached to the flange 11 at the opening edge of the rear door in a state where the terminals are separated from each other without abutting each other. Alternatively, the ends of one weather strip 12 may be abutted and joined.

  As shown in FIG. 9, the weather strip 12 is formed by extrusion molding of an elastic polymer material such as rubber or thermoplastic synthetic resin (including a thermoplastic elastomer), and a mounting portion 14 having a U-shaped cross section and a sponge material. A cylindrical hollow seal portion 15 is integrally formed, and a long core material 16 to be described later is embedded in the attachment portion 14 by insert extrusion molding (also referred to as composite extrusion molding) simultaneously with extrusion molding.

  The mounting portion 14 includes a vehicle outer side wall portion 17, a vehicle inner side wall portion 18, and a bottom wall portion 19 that couples both side wall portions 17, 18. A cylindrical hollow seal portion is formed on the outer surface of the vehicle outer side wall portion 17. 15 is provided integrally. A holding lip 20 is integrally formed on the inner side surface of the vehicle outer side wall portion 17 and the inner side surface of the vehicle inner side wall portion 18 so as to protrude in directions facing each other. In the first embodiment, two holding lips 20 are respectively formed on the vehicle outer side wall portion 17 and the vehicle inner side wall portion 18.

  When the mounting portion 14 of the weather strip 12 is put on the flange 11 at the door opening edge of the vehicle body panel, each holding lip 20 comes into contact with the flange 11 and is elastically deformed so that the flange 11 is positioned on both the inside and outside of the vehicle. The weather strip 12 is attached to the flange 11 by sandwiching from the flange 11.

Next, the core material 16 embedded in the weather strip 12 will be described with reference to FIGS. 2 to 4.
As shown in FIG. 3, the core material 16 is formed of a long strip-shaped core material 21 (see FIG. 2), and a plurality of core material pieces arranged at regular intervals along the longitudinal direction. 22, a connecting portion 23 that connects the plurality of core member pieces 22 in the longitudinal direction, and a separation space portion 24 that is provided between the adjacent core member pieces 22 and arranged at regular intervals along the longitudinal direction. And have. Further, the connecting part 23 and the core member piece 22 are formed with the same thickness, and the connecting part 23 and the core member piece part 22 are made uniform in thickness.

  In the first embodiment, the connecting portions 23 that connect the core member pieces 22 are provided in one row along the longitudinal direction, and the separation space portions 24 between the adjacent core member pieces 22 are arranged in one row. Is divided into two regions in the width direction. Further, the core material 21 is generally a cold-rolled steel sheet having a thickness dimension t of, for example, 0.1 to 1.0 mm and a width dimension w of, for example, 5 to 70 mm, for a weather strip for a vehicle. A metal strip such as a stainless steel plate or an aluminum alloy plate is used. The separation space portion 24 is formed with a length dimension S in the longitudinal direction of the core material 16 of, for example, 0.5 to 5 mm, and the core material piece portion 22 has a length dimension C1 in the longitudinal direction of the core material 16 of, for example, 1 to 1. It is formed to 10 mm.

  Further, as shown in FIG. 4, a predetermined length L1 which is the overall length dimension of the weather strip 12 (the length of the portion corresponding to the thickness of the cutting blade 70 when the weather strip 12 is cut into the predetermined length L1). However, in this embodiment, the thickness of the cutting blade 70 is ignored, and therefore, in the implementation, the cutting length L1 is added to the length of the end material. The core material for cutting having a length A that is at least twice the length C1 of the core material piece 22 in the longitudinal direction of the core material 16 at each position corresponding to A portion 25 is formed. Thereby, the 1st range part by which the core material piece part 22 and the isolation | separation space part 24 are arrange | positioned alternately, and the 2nd range part by which the core material piece part 25 for a cutting | disconnection are arrange | positioned at predetermined intervals alternate The length dimension (L1-A) of the first range portion in the longitudinal direction of the core member 16 is formed to be 10 times or more the length dimension A of the second range portion. In addition, the cutting core piece 25 is formed so that the width dimension of the cutting core piece 25 is the same as the width dimension of the core piece 22 in the width direction of the core 16.

  In the core material forming process described later, the core material 21 is intermittently moved downstream in the longitudinal direction by the basic movement amount L2 (below the predetermined length L1), and the core material 21 is stopped every time the core material 21 stops moving. A punching process (also referred to as a blank process or a notch process using a press) that removes a part that becomes the separation space part 24 so as to leave a part that becomes the core piece part 22 and a part that becomes the connecting part 23 in the material material 21. The core material piece portion 22, the connecting portion 23, and the separation space portion 24 are formed, and the total movement length of the core material 21 is cut from the predetermined length L1. The core material 21 is elongated in a state in which the punching process is temporarily stopped every time when a predetermined value of the length immediately before exceeding the value obtained by subtracting the length dimension of the core material piece portion 25 (subtracted value) is reached. Move in the direction by a predetermined amount of movement L3 below the basic amount of movement L2. It is stopped after then by restarting the punching, to form the cutting core pieces 25.

Hereinafter, the manufacturing apparatus and manufacturing method of the weather strip 12 (including the manufacturing apparatus and manufacturing method of the core material 16) will be described with reference to FIGS.
As shown in FIG. 5, an uncoiler 26 around which a long strip-shaped core material 21 is wound is disposed, and the core material 21 is unwound from the uncoiler 26 and continuously sent out in the longitudinal direction. The core material 21 is taken from the uncoiler 26 by the take-up roller 27 and supplied to the reservoir 28, and the core material 21 is temporarily stored in the reservoir 28 in a curved state. The storage portion 28 includes two sets of position sensors 29 and 30 (for example, light emitting elements 29a and 30a) for confirming that the length (storage amount) of the stored core material 21 is within a predetermined range. An optical sensor comprising a light receiving element 29b, 30b) is arranged, and the driving (rotation amount, operation timing, operation time, etc.) of the take-up roller 27 and the delivery roller 31 is controlled based on the output of the position sensors 29, 30. Thus, the length of the core material 21 stored in the storage unit 28 is maintained within a predetermined range.

  On the downstream side of the reservoir 28, a feed roller 31 (moving means), a press device 32 (punching means) for forming the core material 16, and a moving length of the core material 21 (moving length of the core material 16). The detector 35 (detection means) for detecting the distance (S) and the take-up roller 36 (movement means) are arranged side by side from the upstream side toward the downstream side. Then, the core material 21 stored in the storage unit 28 is fed out by the feed roller 31 and taken up by the take-up roller 36 to supply the core material 21 to the pressing device 32 while moving in the longitudinal direction.

  The feed roller 31 and the take-off roller 36 each move the core material 21 in the longitudinal direction by rotating the core material 21 from both sides, and control the amount of rotation of the rollers 31 and 36 to control the core material. The amount of movement of 21 can be controlled.

  The press device 32 is provided with a punch 33 and a die 34 for removing a portion that becomes the separation space portion 24 while leaving a portion that becomes the core piece portion 22 and a portion that becomes the connecting portion 23 of the core material 21. The punch 33 is driven in the vertical direction by a drive mechanism such as a crank press.

  The drive mechanism such as the crank press has a mechanism for counting the number of actuations of the punch 33 (number of vertical movements) and sending the counted value to the control device 37 as a signal. The signal of the number of times of operation of the punch 33 sent to the control device 37 is input to the control device 37 and processed, and used in cooperation with a detection signal of the detector 35 described later or singly to feed the core material 21. Measure the length.

  In the detector 35, an optical sensor including a light emitting element 35 a and a light receiving element 35 b is arranged so as to sandwich the moving path of the separation space 24 of the core material 16 in the vicinity of the moving path of the core material 16. The separation space portion 24 that passes through the detection position of the detector 35 by utilizing the fact that the output of the optical sensor changes each time the core piece piece 22 passes through the detection position (or every time the separation space portion 24 passes). The moving length of the core material 21 (the moving length of the core material 16) is detected by counting one of the number of the core material pieces 22 with pulses. An output signal (detection signal) of the detector 35 is input to the control device 37.

  The control device 37 determines the moving length of the core material 21 (the moving length of the core material 16) based on the output signal of the detector 35, and commands the operation to the press device 32, the delivery roller 31 and the take-up roller 36, respectively. By outputting the signal, the press device 32, the delivery roller 31 and the take-up roller 36 are controlled to execute the core material forming step. In this core material forming step, the core material material 21 is intermittently moved in the longitudinal direction, and punching is performed every time the core material 21 stops moving, whereby the core material piece portion 22, the connecting portion 23, and the separation space portion. 24, and the core material 21 is moved by a predetermined amount of movement in the longitudinal direction while the punching process is temporarily stopped every time the movement length of the core material 21 reaches a predetermined value corresponding to the predetermined length. After being moved, it is stopped and the punching process is resumed to form the cutting core piece 25. This core material forming step corresponds to a molding core material preparing step.

  Note that the “state in which the punching process is temporarily stopped” means that a space is formed between the punch 33 and the die 34 so that the core material 21 can pass between the punch 33 and the die 34. This means a state and does not mean a state limited to stopping the press device 32 or the like, and the same applies hereinafter.

In the first embodiment, in the core forming process, each time punching is performed, the sending roller 31 and the take-up roller 36 are rotated by a predetermined rotation amount (a rotation amount corresponding to the length of L2 described later) by a command signal from the control device 37. ) To drive the core material 21 in the longitudinal direction by subtracting the length dimension A of the cutting core piece 25 from the predetermined length L1 (hereinafter, this length is simply referred to as “L1-A”). Punched by stopping after being moved by a basic movement amount L2 (the length of a range in which the core piece piece 22, the connecting portion 23, and the separation space portion 24 can be formed by one punching). Is performed once to form a predetermined number of core material piece portions 22, connecting portions 23, and separation space portions 24 in the range of the basic movement amount L2. The total length of the range in which the number of punching operations, which is the number of operations of the punch 33 counted by the control device 37, reaches the predetermined number N and the core piece portion 22, the connecting portion 23, and the separation space portion 24 are formed. When the control device 37 counts that it has reached the length (L2 × N) immediately before the predetermined length (L1-A) exceeds the predetermined length (L1-A), it is adjusted and moved to the sending roller 31 and the take-up roller 36 by a command signal from the control device 37 A signal for rotating the rotation amount corresponding to the length of the amount L3 is sent, and the core material 21 is moved in the longitudinal direction by the adjustment movement amount L3 less than the basic movement amount L2 by driving the rollers 31, 36, and then stopped. By performing punching once, the first step of providing the first range portion by forming the core piece 22, the connecting portion 23, and the separation space portion 24 in the range of the adjustment movement amount L 3 is performed. After the first step, with the punching process temporarily stopped, the core material 21 is moved by a movement amount (L2 + A) exceeding the basic movement amount L2 in the longitudinal direction and then stopped to restart the punching process. Then, the second step of forming the cutting core piece portion 25 and providing the second range portion is repeated, and at this time, the adjustment movement amount L3 is set to (L1-L2 × NA).
The method of moving the core material 21 while controlling the moving length is not limited to the method using the detector 35 described above, and can be performed by the following method.

  In the control device 37, a predetermined operation program is stored in association with the operation frequency of the punch 33 and the operation of the delivery roller 31 and the take-off roller 36, and the counted operation frequency of the punch 33 is stored. When it is confirmed that the predetermined number of times has been reached, the feeding roller 31 and the take-up roller 36 are operated by a predetermined amount of rotation at a predetermined timing, and the core material 21 is moved by a predetermined length. Also good.

  Specifically, the number of actuations N of the punch 33 is counted, and this count is sent to the control device 37 as a detection signal. When it is confirmed that the number of actuations N of the punch 33 has reached a prescribed number (the number of times immediately before L2 × N exceeds L1-A) in the control device 37, the feeding roller 31 and Command signals for the timing and amount of rotation (corresponding to the amount of movement of the core material 21) are sent to the take-up roller 36, and the feed roller 31 and take-up roller 36 are each commanded at the commanded timing. (The rotation amount corresponding to the movement amount (L2 + A) exceeding the basic movement amount L2, the basic movement amount L2, the adjustment movement amount L3, and the basic movement amount L2). As a result, the core material 21 is fed by a predetermined amount of movement (that is, L2, L3, L2 + A) at each predetermined timing, stopped at a predetermined position, and punched when the core material 21 stops. 33 descends and punching is performed.

  At the time of punching in the second step, in order to keep the position of the core material 16 accurately with respect to the punch 33 and the die 34, a positioning pin that can be projected and retracted is provided in the die 34, and this positioning pin is inserted into the separation space 24. To position it.

An execution example of the core material forming step of the first embodiment will be described with reference to FIG.
As a precondition, for example, the total value (S + C1) of the length dimension S of the separation space 24 and the length dimension C1 of the core piece portion 22 in the longitudinal direction of the core member 16 is 1P (pitch), and the weather strip 12 The cutting length L1 of the (core material 16) is a length corresponding to 240P, and the length dimension A of the cutting core material piece 25 is a length corresponding to 10P smaller than L1. Therefore, (L1-A) is 230P. Further, the punch 33 and the die 34 of the press device 32 form the core piece part 22, the connecting part 23, and the separation space part 24 in a range of a length of 100 P by a single punching process. The length of 100P corresponds to the basic movement amount L2. Furthermore, the predetermined movement amount (L2 + A) exceeding the basic movement amount L2 is a length of 110P exceeding L2. Further, a length (L1-A) obtained by subtracting the length A of the cutting core piece 25 from the predetermined length L1 to be cut is a length of 230P.

In this case, if N = 3, L2 × N = 300P, which exceeds the length of L1-A (230P), so the number of times that is the length immediately before exceeding L1-A (230P) is N = 2. For this reason, in the first step, when the number of punching processes reaches a predetermined number N = 2, the total length of the range in which the core piece portion 22, the connecting portion 23, and the separation space portion 24 are formed is L1. The length immediately before exceeding -A (230P) (L2 × N) = 100P × 2 = 200P. Accordingly, the adjustment movement amount L3 is set to 30P by the following equation.
L3 = (L1-L2 * NA) = 240P-100P * 2-10P = 30P

  In the first step, first, as shown in FIG. 7 (a), the first punching process is performed, and the core piece portion 22 and the connecting portion are within a length range of 100P (the range of the basic movement amount L2). 23 and a predetermined number of separation spaces 24 are formed.

  After that, as shown in FIG. 7B, the core material 21 (core material 16) is moved by a length of 100 P in the longitudinal direction (basic movement amount L2), and then stopped, and then the second punching is performed. Processing is performed again to form a predetermined number of core material piece portions 22, connecting portions 23, and separation space portions 24 in a range of a length of 100P (a range of the basic movement amount L2).

  Thereafter, as shown in FIG. 7C, the length of the core material 21 (core material 16) corresponding to 30P obtained by the calculation formula L1-L2 × N (2) -A in the longitudinal direction (adjustment movement) After moving by the amount L3), it is stopped, and punching is performed once, so that the core piece portion 22, the connecting portion 23, and the separation space portion are within a length range of 30P (range of the adjustment movement amount L3). 24. At this time, in the range of 70P shown in the figure, the punch 33 is in a so-called “empty” state in which only the separation space 24 that has already been formed is passed. Thereby, the first range portion is provided.

  Thereafter, in the second step, as shown in FIG. 7D, the length corresponding to (L2 + A) in the longitudinal direction of the core material 21 (core material 16) in a state where the punching process is temporarily stopped. Is moved after a length of 110 P (a movement amount exceeding the basic movement amount L2) and then stopped, and the punching process is restarted to form the cutting core piece 25 and provide the second range portion. . This punching process in the second process is the first punching process in the next first process.

  By repeating the above processing, the first range portion in which the core piece portions 22 and the separation space portions 24 are alternately arranged and the second range portion in which the cutting core piece portions 25 are arranged are alternately arranged. The provided core material 16 (molding core material) is formed.

  The weather strip 12 (core material 16) has a different length (L1) depending on the portion used. In the above example, when (L1−L2 × NA) becomes zero, the process of FIG. 7B is omitted from the process of FIG. The process is punched.

  In addition, the detector 35 counts either the number of the separation space portion 24 or the core material piece portion 22 that passes through the detection position, thereby calculating the movement length of the core material 21 (movement length of the core material 16). However, the present invention is not limited to this, and the core material 21 may be detected by a rotary encoder that rotates in contact with the core material 21 or the core material 16 or other contact-type or non-contact type length measuring device. Alternatively, the movement length of the core material 16 may be detected. Alternatively, the number of punching processes may be detected.

  Further, a rupture generation part forming device (not shown) is disposed on the downstream side of the press device 32, and the rupture generation part forming device allows the first range portion and the second range portion of the connecting portion 23 to be connected. You may make it form the fracture | rupture generation | occurrence | production part 52 (refer FIG. 4) which makes it easy to fracture | rupture this connection part 23 in the boundary part or its vicinity along the width direction of the connection part 23 (core material 16). At this time, it is preferable to form the breakage generating portion 52 so that the width direction dimension and the thickness dimension of the connecting portion 23 in the breakage generating portion 52 are smaller than those of the adjacent connecting portions.

  After forming the core material 16 (molding core material) in this way, the core material 16 is taken up by the take-up roller 36 and supplied to the storage section 53 as shown in FIG. Is temporarily stored in a curved state. The storage portion 53 has two sets of position sensors 54 and 55 (for example, a light emitting element 54a and 55a and a light receiving element) for confirming that the length (storage amount) of the stored core material 16 is within a predetermined range. The optical sensor composed of the elements 54b and 55b) is arranged, and the operating speed of the pressing device 32 is driven and controlled based on the outputs of the position sensors 54 and 55, so that the core material 16 stored in the storage portion 53 is controlled. The length is maintained within a predetermined range.

  The core material 16 stored in the reservoir 53 is sent out by a feed roller 56 at a constant speed and supplied to the core cold roll forming device 57. This intermediate material cold roll forming device 57 forms the intermediate material 16 into a U-shaped cross-section (a shape expanded from the final cross-sectional shape), which is a predetermined intermediate cross-sectional shape (see FIG. 8). The surface molding process is executed. The core material cold roll forming device 57 is a plurality of pairs (for example, three pairs) of forming rollers that gradually deforms the cross-sectional shape of the core material 16 to form an intermediate cross-sectional shape. Thereby, before embedding the core material 16 in the weather strip 12, it shape | molds in intermediate | middle cross-sectional shape (cross-sectional U-shape).

  Thereafter, the core material 16 having an intermediate cross-sectional shape fed from the core material cold roll forming device 57 is continuously supplied to the extrusion mold 59 of the extrusion device 58. The extrusion mold 59 extrudes a weather strip 12A having a predetermined intermediate cross-sectional shape (see FIG. 8), and a core member 16 having an intermediate cross-sectional shape is attached to the attachment portion 14 of the weather strip 12A having the intermediate cross-sectional shape. The embedding extrusion process is executed.

  As shown in FIG. 8, the extrusion molding apparatus 58 includes an extrusion mold 59 for extruding a weather strip 12A having an intermediate cross-sectional shape (a shape in which the cross-sectional shape of the mounting portion 14 is wider than the final cross-sectional shape). In the extrusion mold 59, the core material 16 having an intermediate cross-sectional shape is continuously supplied in the longitudinal direction, and the attachment portion molding polymer material P1 and the cylindrical hollow seal portion molding polymer are fed into the extrusion mold 59. The material P2 is continuously supplied from separate supply ports 60 and 61, respectively, and a weather strip 12A (attachment portion 14, cylindrical hollow seal portion 15 and the like) having an intermediate cross-sectional shape is extruded. Thus, the core material 16 having an intermediate cross-sectional shape is covered with the polymer material, and the core material 16 having an intermediate cross-sectional shape is embedded and integrated in the mounting portion 14 of the weather strip 12A having the intermediate cross-sectional shape.

  Thereafter, as shown in FIG. 6, when the mounting portion molding polymer material and the cylindrical hollow seal portion molding polymer material are rubber, the intermediate cross-sectional shape extruded from the extrusion molding device 58 (see FIG. 5) is used. The weather strip 12A is supplied to the curing processing device 62. The curing processing device 62 heats the weather strip 12A with a heater 63 (for example, a high-frequency heater and a hot air heater), and the weather strip 12A main body (unvulcanized rubber portion extruded by the extrusion molding device 58). A processing step of vulcanizing and curing is performed. After the weather strip 12A main body is vulcanized and cured, the weather strip 12A is cooled by a cooler 64 such as a cooling water tank as necessary.

  In the case where the mounting portion molding polymer material and the cylindrical hollow seal portion molding polymer material are thermoplastic synthetic resins (including thermoplastic elastomer), the heater 63 is omitted, and the heating material is heated from the extrusion molding device 58. The weather strip 12A having an intermediate cross-sectional shape extruded in a molten state is cooled by a cooling device 64 such as a cooling water tank to solidify the weather strip 12A main body (an unsolidified resin portion extruded by the extrusion molding device 58). The processing step is executed to cool and solidify the weatherstrip 12A main body.

  Thereafter, the weather strip 12A having the intermediate cross-sectional shape is supplied to the trim material cold roll forming device 66 while being pulled by the take-up machine 65, and the trim material cold roll forming device 66 allows the weather strip 12A having the intermediate cross-sectional shape to be formed. A final cross-section forming step for forming the attachment portion 14 into a final cross-sectional shape (see FIG. 9) is executed. The trim material cold roll forming device 66 is a plurality of pairs (for example, three pairs) of forming rollers, and a core having an intermediate cross-sectional shape in which a mounting portion 14 of a weather strip 12A having an intermediate cross-sectional shape is embedded in the mounting portion 14. It is gradually deformed together with the material 16 and formed into a final cross-sectional shape. As a result, a weather strip 12 having a final cross-sectional shape is formed.

  On the downstream side of the trim material cold roll forming apparatus 66, a guide roller 67, a detector 68 for detecting the position of the cutting core piece 25 of the core material 16 embedded in the weather strip 12, and a weather strip The cutting devices 69 for cutting 12 are arranged side by side from the upstream side toward the downstream side. Then, the weather strip 12 is moved in the downstream direction, the position of the cutting core piece 25 of the core 16 embedded in the weather strip 12 is detected by the detector 68, and the cutting core 69 is cut by the cutting device 69. A cutting process for cutting the weatherstrip 12 within the range of the dimension A in the longitudinal direction of the portion 25 is executed. A guide roller 67 (downstream guide roller is not shown) is provided at least upstream (preferably both upstream and downstream) of the detector 68, and the position of the weather strip 12 relative to the detector 68 is being moved. In addition, it is preferable to ensure that it can be always kept constant.

  As shown in FIG. 9, the detector 68 is disposed in the vicinity of the side of the travel path of the weather strip 12 (in the vicinity of the side of the vehicle interior side wall portion 18) in a non-contact manner with the longitudinal direction of the core 16. The core material piece 25 for cutting due to the change in the electrostatic capacity due to the difference in the size in the longitudinal direction between the core material piece portion 22 having the dimension C1 and the cutting core material piece portion 25 having a dimension A in the longitudinal direction larger than the dimension C1. It is comprised by the proximity sensor etc. which detect the position of this. An output signal (detection signal) of the detector 68 is input to the control device 37.

As shown in FIG. 10, the cutting device 69 is provided with a cutting blade 70 movably in a direction crossing the weather strip 12, for example, in the vertical direction, and the thickness dimension T of the cutting blade 70 is a core material for cutting. The dimension is smaller than the dimension A of the piece 25. The cutting device 69 is controlled by the control device 37. Note that the shape of the cutting blade 70 may be appropriately changed. For example, a rotating disc-shaped metal saw may be used as the cutting blade.
If the dimension T cannot be ignored in relation to the total length L1, the length of the dimension A may be set to a length that takes the dimension T into consideration.

The control device 37 detects the position of the cutting core piece portion 25 of the core material 16 embedded in the weather strip 12 with the detector 68, and then the predetermined time t (the weather strip 12 is cut from the detection position of the detector 68). When the time required for moving to the position of the cutting blade 70 of the device 69 has elapsed, an operation command signal is output to the cutting device 69. Accordingly, the cutting device 69 drives the cutting blade 70 downward to cut the weather strip 12 at a position within the longitudinal direction of the cutting core piece portion 25 of the core material 16, whereby the weather strip 12 is predetermined. Cut with dimension L1. The predetermined time t can be obtained from the following equation using the moving speed V of the weather strip 12 and the distance L from the detection position of the detector 68 to the position of the cutting blade 70 of the cutting device 69.
t = L / V

  The cutting device 69 is cut while being moved downstream at the same speed as the moving speed V of the weather strip 12 during the cutting operation, and is cut by a cutting method that returns to the original position after the cutting operation, that is, a so-called traveling cutting method. Anyway.

  As described above, the weather strip 12 is stably cut within a range in the longitudinal direction of the cutting core piece 25 having a dimension larger than the longitudinal dimension C1 of the core piece 22. Since the thickness T in the longitudinal direction of the cutting blade 70 is smaller than the dimension A of the cutting core piece 25, the shape and cutting angle of the cutting end of the weather strip 12 can be changed even if the cutting position is slightly deviated within the allowable range. Do not change unexpectedly.

  Further, the detector 68 is disposed upstream of the cutting device 69 (between the trim material cold roll forming device 66 and the cutting device 69), but the core material 16 and the weather strip 12 do not extend in the longitudinal direction or are ignored. In the case of elongation to be obtained, the detector 68 may be arranged upstream of the extrusion molding device 58 (between the core cold roll molding device 57 and the extrusion molding device 58). In this case, if the detector 68 is constituted by an optical sensor composed of a light emitting element and a light receiving element, it is possible to stably measure the moving length of the secondary core material 16B by detecting the difference in the pulse time length described above. In this case, the predetermined time t from the time of detection to the cutting is obtained by the above-described equation (t = L / V).

  As shown in FIG. 11, after the weather strip 12 is cut, the cutting core piece 25 is removed by removing the cutting core piece 25 of the core 16 exposed at both cutting terminals of the weather strip 12 as necessary. The part removal process is executed.

  In this cutting core piece removing step, the cutting core piece 25 of the core 16 is grasped with a tool such as pliers or nippers and pulled in a direction intersecting the longitudinal direction of the core 16 (width direction or plate thickness). The connecting portion 23 connected to the cutting core piece portion 25 is easily and accurately positioned from the other connecting portions by forcibly displacing or twisting in the direction) and using the break generating portion 52 as the starting point of the break. It is possible to prevent the cutting core piece portion 25 from being exposed at the cutting end of the weather strip 12 by breaking and cutting out the cutting core piece portion 25. Thereby, manufacture of the weather strip 12 with the core 16 embedded therein is completed.

  It should be noted that there is no dimension larger than the width dimension of the cutting core piece portion 25 inside the longitudinal direction from the cutting terminal when the cutting core piece piece 25 is extracted, so that it is easy to catch. Can be extracted.

  In the first embodiment described above, the cutting core material piece 25 is formed at each position corresponding to the predetermined length of the core material 16, and the weather strip 12 in which the core material 16 is embedded is moved in the longitudinal direction. The position of the cutting core piece portion 25 of the core material 16 embedded in the weather strip 12 is detected, and the weather strip 12 is cut within the longitudinal dimension of the cutting core piece portion 25. Therefore, the weather strip 12 can be stably cut within the range of the cutting core piece 25 having a larger dimension in the longitudinal direction than the core piece 22 of the core 16. In addition, since the length dimension of the cutting core piece 25 in the longitudinal direction of the core 16 is more than twice the length dimension of the core piece 22, there is a slight misalignment or weather at the cutting position. Even if the strip 12 slightly expands and contracts in the longitudinal direction, the weather strip 12 can be more stably cut at a position within the range of the cutting core piece 25. Further, when the weather strip 12 is cut within the range of the cutting core piece 25, the cut end surface of the weather strip 12 cut at a stable shape and angle is obtained because the cut portion is always the same shape. Moreover, since the cutting core piece 25 having the same width as that of the core material 21 is exposed on the cut end face of the weather strip 12, it is necessary to pull out the cutting core piece 25 in the longitudinal direction and remove it. In this case, there is no mechanical engagement (hook) of the polymer material, and the cutting core piece 25 can be easily pulled out and removed. Further, since the edge in the width direction of the core material 16 is also present in the portion where the core material piece 25 for cutting is formed, when the weather strip 12 is manufactured (for example, the core material 16 is predetermined by the roll forming device 57). In the manufacturing process (for example, roll forming device 57 or extrusion molding) when forming the weather strip 12 by supplying the polymer material while supplying the core material 16 to the extrusion mold 59. In the mold 59), the edge in the width direction of the core material 16 can be stably guided, and the core material 16 can be prevented from being displaced in the width direction.

  In the first embodiment, in the core forming process, each time punching is performed, the core material 21 is moved in the longitudinal direction by a basic movement amount L2 less than a predetermined length (L1-A) and then stopped. By performing the punching process once, a predetermined number of core member pieces 22, connecting portions 23, and separation space portions 24 are formed in the range of the basic movement amount L2. The total length of the range in which the number of times of the one punching process reaches the predetermined number N and the core piece portion 22, the connecting portion 23, and the separation space portion 24 are formed exceeds the predetermined length (L1-A). When the length (L2 × N) is reached, the core material 21 is moved in the longitudinal direction by an adjustment movement amount L3 that is less than the basic movement amount L2, and then stopped, and the adjustment movement is performed by performing punching once. A first step of providing the first range portion by forming the core piece portion 22, the connecting portion 23, and the separation space portion 24 in the range of the amount L3 is performed. After the first step, with the punching process temporarily stopped, the core material 21 is moved by a movement amount (L2 + A) exceeding the basic movement amount L2 in the longitudinal direction and then stopped to restart the punching process. Then, the second step of forming the cutting core piece 25 and providing the second range portion is performed. Since the first step and the second step are repeated and the adjustment movement amount L3 is set to (L1−L2 × NA), the basic movement amount L2 (the core piece part by one punching process) 22), the connecting portion 23, and the separation space 24 can be formed in a predetermined length L1 by adjusting the adjustment movement amount L3 even if the same press device (punch and die) as in the past is used. The cutting core piece 25 can be formed for each corresponding position. Further, after a predetermined number of cores 16 having a predetermined length L1 are formed along the longitudinal direction, a controller 37 is used when subsequently manufacturing a core having a length Ln different from the predetermined length L1. By switching the program in the program from the program for the length L1 to the program for the Ln, various core materials 16 having a length Ln different from the predetermined length (cutting length) L1 can be easily manufactured. Can do.

  In the first embodiment, when forming the cutting core piece 25, the separation space 24 that passes the detection position of the detector 40 by the detector 40 disposed in the vicinity of the movement path of the core 16. Since the movement length of the core material 21 (core material 16) is detected by counting the number of the core material pieces 22 and the movement length of the core material 21 (core material 16) is easy. And it can detect correctly.

  In the first embodiment, the basic movement amount L2 (the length of the range in which the core material piece portion 22, the connecting portion 23, and the separation space portion 24 can be formed by one punching of the pressing device 32) is set to 100P. Although the length is set, the basic movement amount L2 may be appropriately changed within a range not exceeding the length of (L1-A).

  Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment is a manufacturing method that takes into account an allowable tolerance with respect to the cutting length L1 of the weather strip 12. However, substantially the same parts as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted or simplified, and parts different from those in the first embodiment are mainly described.

  By the way, after repeating the punching process by moving the core material 21 by the basic movement amount L2, the punching process is performed by moving the core material 21 by the adjustment movement amount L3 lower than the basic movement amount L2. Since there is a so-called “blank strike” where the punch 33 passes once again in the current punching process in the portion punched in the previous punching process, there is a possibility that a biased load is applied to the press device 32 that performs the punching process.

  Thus, in the second embodiment, in the core material forming step, the core material 21 has a dimension that is less than a predetermined length (L1-A) in the longitudinal direction and within an allowable tolerance with respect to the cutting length L1 every time punching is performed. A process of forming a predetermined number of core material piece portions 22, connecting portions 23, and separation space portions 24 within the range of the basic movement amount L <b> 2 by performing the punching once after being moved by a certain basic movement amount L <b> 2. A first step of repeatedly providing the first range portion until the length of the range in which the core piece portion 22, the connecting portion 23, and the separation space portion 24 are formed reaches a length immediately before exceeding the predetermined length L1, and After this first step, the core material 21 is moved by a predetermined movement amount exceeding the basic movement amount L2 in the longitudinal direction while the punching process is temporarily stopped, and then stopped by restarting the punching process. Shape core material piece 25 And repeating the second step of providing a second range portion.

An execution example of the core material forming step of the second embodiment will be described with reference to FIGS. 12 and 13.
As a precondition, for example, the total value (S + C1) of the length dimension S of the separation space 24 and the length dimension C1 of the core piece portion 22 in the longitudinal direction of the core member 16 is 1P (pitch), and the weather strip 12 The cutting length L1 of the (core material 16) is a length corresponding to 240P, and the length dimension A of the cutting core material piece 25 is a length corresponding to 3P. The length for 240P corresponds to the predetermined length L1. The allowable tolerance of the length with respect to L1 is set to ± 3P. In addition, the punch 33 and the die 34 of the press device 32 form the core piece portion 22, the connecting portion 23, and the separation space portion 24 in a range of a length of 3P by a single punching process. The length corresponding to 3P corresponds to the basic movement amount L2.

  In this case, in the first step, when the number of punching processes reaches a predetermined number N = 79, the length of the range in which the core piece portion 22, the connecting portion 23, and the separation space portion 24 are formed is a predetermined length. The length immediately before (L1-A) (L2 × N) = 3P × 79 = 237P.

  In the first step, as shown in FIG. 12, first, every time punching is performed, the core material 21 (core material 16) is moved by a length corresponding to 3P (basic movement amount L2) and then stopped. A process of forming a predetermined number of core material piece portions 22, connecting portions 23, and separation space portions 24 within a 3 P length range (basic movement amount L 2 range) by performing punching once. The first range portion is repeated until the number of times reaches a predetermined number N = 79 and the cumulative length of the range in which the core piece portion 22, the connecting portion 23, and the separation space portion 24 are formed reaches the length of 237P. Is provided.

  After that, in the second step, as shown in FIG. 13, the length of the core material 21 (core material 16) is 6P in the longitudinal direction (basic movement amount L2 is set in a state where the punching process is temporarily stopped. After the movement amount is increased, the punching process is resumed to form a cutting core piece 25 having a length A corresponding to 3P, thereby providing a second range portion. This punching process in the second process is the first punching process in the next first process.

  By repeating the above processing, the first range portion in which the core piece portions 22 and the separation space portions 24 are alternately arranged and the second range portion in which the cutting core piece portions 25 are arranged are alternately arranged. The provided core material 16 (molding core material) is formed.

  In the above example, assuming that the predetermined length L1 is set to 238P, after the number N reaches 79, the core material 21 is moved by a length of 6P and punching is performed. The second range portion is provided by forming a cutting core piece 25 having a length A corresponding to 3P. When the core material 16 obtained in this way is cut at the center in the longitudinal direction of the cutting core material piece 25, the actual length becomes 237P + 3P = 240P and falls within the allowable tolerance of 238P ± 3P. When the predetermined length L1 is set to 242P, 240P + 3P = 243P, which is within the allowable tolerance of 242P ± 3P.

  In the second embodiment described above, in the core material forming process, the core material 21 is moved by the basic movement amount L2 less than the predetermined length L1 in the longitudinal direction every time punching is performed, and then stopped and punched. A process of forming a predetermined number of core member pieces 22, connecting portions 23, and separation space portions 24 in the range of the basic movement amount L <b> 2 by performing once is performed by the core member pieces 22, the connecting portions 23, and the separation space portions 24. The first step of repeatedly providing the first range portion until the length of the range in which the first is formed exceeds the predetermined length (L1-A) is reached, and after this first step, the punching process is temporarily performed In the stopped state, the core material 21 is moved by a predetermined movement amount exceeding the basic movement amount L2 in the longitudinal direction, and then stopped and the punching process is restarted to form the cutting core piece portion 25. Repeat the second step to provide the range part As a result, the cutting length L1 is allowed without causing “blank strike” using the press device 32 (punch 33 and die 34) having the basic movement amount L2 designed so that the adjustment movement amount becomes zero. Weatherstrips 12 that fall within tolerances can be manufactured.

  In the second embodiment, the basic movement amount L2 (the length of the range in which the core piece portion 22, the connecting portion 23, and the separation space portion 24 can be formed by a single punching process of the press device 32) is set to 3P. Although the length is set, the basic movement amount L2 may be appropriately changed within the allowable tolerance. For example, the basic movement amount L2 may be set to a length of 1P or 2P.

  In the first and second embodiments, the connecting portions 23 of the core material 16 are provided in a row along the longitudinal direction. However, as shown in FIG. 14, the connecting portions 23 of the core material 16 are provided in the longitudinal direction. May be provided in parallel to each other in two rows. Alternatively, the connecting portions 23 may be provided in three or more rows parallel to each other along the longitudinal direction. By providing the connecting portions 23 in a plurality of rows, it is possible to effectively prevent misalignment of the core material 16 when the core material 16 is roll-formed as described above.

  Further, in each of the first and second embodiments, a predetermined number of weather strips 12 are formed of the core material 16 (forming core material) in which the cutting core material pieces 25 are formed at each position corresponding to the first predetermined length. After the manufacturing is completed, the core material 16 having the cutting core material pieces 25 formed at each position corresponding to the second predetermined length different from the first predetermined length is manufactured by the predetermined number of weather strips 12. You may do it. In this way, after producing a predetermined number (for example, 100) of weather strips 12 to be cut to a first predetermined length (for example, a length corresponding to 240 P), the second predetermined length (for example, 360 P) is manufactured. It is possible to manufacture a predetermined number (for example, 200) of weather strips 12 to be cut to a predetermined length.

  Further, in each of the first and second embodiments, the core material 21 is moved in the longitudinal direction by the feeding roller 31 and the take-off roller 36. However, the core material 21 is slid and moved from both sides to slide the core material 21. A grip feeder that moves the material 21 in the longitudinal direction may be provided, and the amount of movement of the core material 21 may be controlled by controlling the amount of movement of the grip feeder.

  In each of the first and second embodiments, the core 16 (molding core) in which the core piece 21 for cutting is formed from the core material 21 is formed on the production line of the weather strip 12. However, in each of the first and second embodiments, the core material 16 may be obtained from the outside, and the steps after the intermediate cross section forming step may be executed. In this case, for example, an uncoiler around which the core material 16 is wound is disposed, and a process of unwinding the core material 16 from the uncoiler and sending it out is executed. In this way, the weather strip 12 can be manufactured using the core material 16 manufactured on a line different from the production line of the weather strip 12.

  Further, in each of the first and second embodiments, when only the core material 16 is manufactured, the core material 16 is manufactured, and then the core material 16 is a recoiler 78 (two points in FIG. 5). You may make it abbreviate | omit the process after an intermediate cross-section shaping | molding process after performing the core winding process wound around a chain line). In this case, the recoiler 78, the rotary drive device of the recoiler 78, and the like correspond to the core material winding means.

  In each of the first and second embodiments, in the cutting process, the position of the cutting core piece 25 of the secondary core material 16B embedded in the weather strip 12 is detected by the detector 68 such as a proximity sensor. However, the method of detecting the position of the cutting core piece 25 is not limited to this, and may be changed as appropriate.

  For example, the surface of the weather strip 12 is sprayed with a paint having a color different from that of the weather strip 12 to mark the surface, or a tool or the like is brought into contact with the surface of the weather strip 12 to form a concave shape different from the surroundings. Alternatively, a convex mark may be attached, and image processing may be performed to detect the position of the cutting core piece portion 25 of the core material 16 embedded in the weather strip 12. Further, the position of the cutting core piece 25 of the core 16 embedded in the weather strip 12 may be detected by transmitting X-rays.

  In the first and second embodiments, the present invention is applied to the weather strip 12 attached to the door opening edge (front door opening edge or rear door opening edge) on the side portion of the vehicle body panel. However, the present invention is not limited to this. The present invention may be applied to a weather strip attached to the door opening edge at the rear of the vehicle body panel, the opening edge of the trunk room, or the window opening edge.

  Furthermore, the weather strip 12 is not limited to the weather strip 12 in which the cylindrical hollow seal portion 15 is provided on the vehicle outer side wall portion 17 of the attachment portion 14, and the weather is provided in which the cylindrical hollow seal portion 15 is provided in the bottom wall portion 19 of the attachment portion 14. You may apply this invention to the weather strip which is not provided with the strip 12 (refer the dashed-two dotted line of FIG. 9) and the cylindrical hollow seal part 15. FIG.

  In addition, the present invention provides the shape of each part (attachment part, seal part, etc.) of the weather strip and the shape of each part of the core material (core piece part, connecting part, separation space part, cutting core piece part, etc.). Various modifications can be made without departing from the spirit of the invention, such as appropriate modifications.

  DESCRIPTION OF SYMBOLS 12 ... Weather strip (trim material), 16 ... Core material, 21 ... Core material material, 22 ... Core material piece part, 23 ... Connection part, 24 ... Separation space part, 25 ... Cutting core material part part, 31 ... Delivery Roller (moving means) 32 ... Pressing device (punching processing means) 35 ... Detector (detecting means) 36 ... Take-off roller (moving means) 37 ... Control device 57 ... Core cold roll forming device 58 DESCRIPTION OF SYMBOLS ... Extrusion molding apparatus, 59 ... Extrusion mold, 62 ... Hardening processing apparatus, 66 ... Trim material cold roll molding apparatus, 68 ... Detector, 69 ... Cutting apparatus, 70 ... Cutting blade

Claims (23)

Adjacent to a plurality of core piece pieces that are formed from a long strip-like core material and arranged at predetermined intervals along the longitudinal direction, and a connecting portion that connects the plurality of core piece pieces It has a separation space provided between the core material pieces, and is embedded in the trim material by being covered with a polymer material for molding the trim material when molding a long trim material. A core material for a trim material that is cut to a predetermined length after being made,
The core material is formed by forming a core material piece for cutting having a size larger than the size of the core material piece portion in the longitudinal direction of the core material at each position corresponding to the predetermined length. The first range portions in which the pieces and the separation space portions are alternately arranged at the predetermined interval and the second range portions in which the cutting core pieces are arranged are alternately provided, A core material for a trim material, wherein a length dimension of the second range portion is smaller than a length dimension of the first range portion in a longitudinal direction.   The cutting core piece is formed such that the length dimension of the cutting core piece in the longitudinal direction of the core is at least twice as long as the length of the core piece. The core material for a trim material according to claim 1, wherein the core material is a trim material.   3. The trim material according to claim 1, wherein a dimension of the first range portion is 10 times or more a dimension of the second range portion in a longitudinal direction of the core material. Core material.   The core material for a trim material according to any one of claims 1 to 3, wherein the connecting portion and the core material piece portion are formed with the same thickness.   The core material piece for cutting is formed so that the size of the core material piece for cutting is the same as the size of the core material piece portion in the width direction of the core material. Item 5. A core material for trim material according to any one of Items 1 to 4.   6. The core material for a trim material according to claim 1, wherein the connecting portion is formed in one example along a longitudinal direction of the core material.   The core material for a trim material according to any one of claims 1 to 5, wherein the connecting portions are formed in a plurality of rows parallel to each other along the longitudinal direction of the core material.   A breakage generating portion that facilitates breakage of the connecting portion is formed along the width direction of the core material at or near the boundary portion between the first range portion and the second range portion of the connecting portion. The core material for a trim material according to any one of claims 1 to 7, wherein the core material is a trim material. Adjacent to a plurality of core piece pieces that are formed from a long strip-like core material and arranged at predetermined intervals along the longitudinal direction, and a connecting portion that connects the plurality of core piece pieces It has a separation space provided between the core material pieces, and is embedded in the trim material by being covered with a polymer material for molding the trim material when molding a long trim material. A method for manufacturing a core material for a trim material that is cut to a predetermined length L1 after being formed,
The core material is moved intermittently in the longitudinal direction so that each time the core material is stopped moving, a portion that becomes the core material piece and a portion that becomes the connecting portion of the core material remain. The core piece piece, the connecting portion, and the separation space portion are formed by performing a punching process for removing the portion that becomes the separation space portion, and the moving length of the core material is set to the predetermined length L1. Each time the core material is moved by a predetermined amount of movement in the longitudinal direction in a state where the punching process is temporarily stopped every time the corresponding predetermined value is reached, the core material is resumed by stopping and stopping the punching process. A core material forming step of forming a cutting core material piece having a length dimension A larger than the length dimension of the core material piece part in the longitudinal direction of the core material piece part, the separation space part, Are arranged in a first range portion and the cutting core piece pieces arranged alternately. Method for producing a core material of the trim material and providing a second range portion alternately that. In the core material forming step,
Each time the punching is performed, the core material is moved by a basic movement amount L2 that is less than a length (L1-A) obtained by subtracting the length dimension A of the cutting core material piece from the predetermined length L1 in the longitudinal direction. It is stopped after being moved, and the punching process is performed once, thereby repeating the process of forming a plurality of predetermined numbers of the core piece piece, the connecting portion, and the separation space portion within the range of the basic movement amount L2. The number of punching operations reaches a predetermined number N, and the total moving length of the core material is a length obtained by subtracting the length dimension A of the cutting core piece from the predetermined length L1 (L1- When the length (L2 × N) immediately before exceeding A) is reached, the core material is moved in the longitudinal direction by an adjustment movement amount L3 that is less than the basic movement amount L2, and then stopped and the punching process is performed 1 The core piece within the range of the adjustment movement amount L3 A first step of providing said first range portion and forming said connecting portion and the separation space,
After the first step, with the punching process temporarily stopped, the core material is moved in the longitudinal direction by the predetermined movement amount (L2 + A) exceeding the basic movement amount L2, and then stopped and the punching is performed. Repeating the second step of forming the cutting core piece by resuming processing and providing the second range portion,
The method of manufacturing a core material for a trim material according to claim 9, wherein the adjustment movement amount L3 is set to (L1-L2 × NA). In the core material forming step,
Each time the punching is performed, the core material is less than the predetermined length L1 obtained by subtracting the length dimension A of the cutting core piece portion L1 from the predetermined length L1 (L1-A) and the predetermined length. After moving by the basic movement amount L2 within the length of the allowable tolerance of L1, it is stopped and the punching is performed once so that the core piece portion, the connecting portion and the separation are within the range of the basic movement amount L2. The processing of forming a predetermined number of spaces is performed by adding the total length of the range in which the core piece, the connecting portion, and the separation space are formed from the predetermined length L1 to the cutting core piece. A first step of providing the first range portion by repeatedly performing a predetermined number of times N reaching a length immediately before the length (L1-A) obtained by subtracting the length dimension A;
After the first step, with the punching process temporarily stopped, the core material is moved in the longitudinal direction by the predetermined movement amount (L2 + A) exceeding the basic movement amount L2, and then stopped and the punching is performed. The method of manufacturing a core material for a trim material according to claim 9, wherein the second step of forming the cutting core piece portion by resuming processing and providing the second range portion is repeated. .   In the core material forming step, the separation space portion and / or the core material piece portion that passes through the detection position of the detector by a detector disposed near or in contact with the core material movement path. The method for manufacturing a core material for trim material according to claim 9, wherein the movement length of the core material material is detected by counting the number of the core materials.   In the core material forming step, when forming the cutting core material piece portion, the connecting portion is broken at or near a boundary portion between the first range portion and the second range portion of the connecting portion. The method for manufacturing a core material for a trim material according to any one of claims 9 to 12, wherein a breakage generating portion to be easily formed is formed along a width direction of the core material.   In the core material forming step, the cutting core material piece portion so that the length dimension of the cutting core material piece portion is not less than twice the length dimension of the core material piece portion in the longitudinal direction of the core material. The method for manufacturing a core material for a trim material according to any one of claims 9 to 13, wherein the core material is formed.   A core material winding step of winding the core material on which the separation core portion formed with the separation space portion, the core piece portion and the connecting portion is formed on the core reel; The manufacturing method of the core material for trim materials in any one of Claim 9 thru | or 14. Adjacent to a plurality of core piece pieces that are formed from a long strip-like core material and arranged at predetermined intervals along the longitudinal direction, and a connecting portion that connects the plurality of core piece pieces A core material having a separation space provided between the core material pieces is covered with a polymer material for molding a trim material, and the core material is embedded and integrated, and then cut to a predetermined length. A method for producing a long trim material,
The core piece is formed by forming a cutting core piece having a length larger than the length of the core piece in the longitudinal direction of the core for each position corresponding to the predetermined length. The first range portion in which the portion and the separation space portion are alternately arranged and the second range portion in which the cutting core piece portion is arranged are provided alternately, and the first range portion is arranged in the longitudinal direction of the core material. A molding core preparation step of preparing a core material (hereinafter referred to as “molding core material”) in which the length dimension of the second range portion is smaller than the length dimension of the first range portion;
The molding core is formed by extruding the trim material by supplying the polymer material to the extrusion mold while continuously supplying the molding core material in the longitudinal direction to the extrusion mold for molding the trim material. An extrusion process in which a material is coated with the polymer material and the molding core is embedded in the trim material;
Curing or solidifying the polymer material portion of the trim material;
The trim material is moved in the longitudinal direction to detect the position of the cutting core material piece portion of the molding core material embedded in the trim material, and within the range of the length dimension of the cutting core material piece portion. A trim material manufacturing method comprising: a cutting step of cutting the trim material.   The trim material according to claim 16, wherein in the molding core preparation step, a step of unwinding and feeding the molding core from a reel for core around which the molding core is wound is performed. Production method.   The method for manufacturing a trim material according to claim 16, wherein a core material forming step for forming the molding core material is executed in the molding core material preparing step.   In the core material forming step, after the molding core material in which the cutting core material piece portion is formed for each position corresponding to the first predetermined length is manufactured by a predetermined number of the trim materials, The molding core material in which the cutting core material piece portion is formed at each position corresponding to a second predetermined length different from the first predetermined length is manufactured by a predetermined number of the trim materials. The manufacturing method of the trim material of Claim 18. Adjacent to a plurality of core piece pieces that are formed from a long strip-like core material and arranged at predetermined intervals along the longitudinal direction, and a connecting portion that connects the plurality of core piece pieces It has a separation space provided between the core material pieces, and is embedded in the trim material by being covered with a polymer material for molding the trim material when molding a long trim material. An apparatus for manufacturing a core material for a trim material that is cut to a predetermined length after being formed,
Moving means for moving the core material in the longitudinal direction;
Punching means for performing a punching process for removing the part that becomes the separation space part so as to leave the part that becomes the core piece part and the part that becomes the connection part of the core material,
Detection means for detecting the moving length of the core material and / or the number of punching operations;
Based on the detection result of the detection means, the core material is intermittently moved in the longitudinal direction, and the punching is performed every time the movement of the core material is stopped. Forming a separation space, and each time the moving length of the core material reaches a predetermined value corresponding to the predetermined length, the core material is moved in the longitudinal direction while the punching process is temporarily stopped. A core piece for cutting having a length larger than the length of the core piece in the longitudinal direction of the core is formed by resuming the punching by stopping after moving by a predetermined amount of movement. And a controller for controlling the moving means and the punching means. A manufacturing apparatus for a core material for a trim material.   The separation space portion, the core piece piece, and the connecting portion are formed, and core material winding means for winding the core material formed with the cutting core piece piece around the core reel is provided. The apparatus for manufacturing a core material for a trim material according to claim 20.   The moving means includes a roller provided on the upstream side and the downstream side of the punching processing means and moving the core material in the longitudinal direction by rotating the core material from both sides. The apparatus for manufacturing a core material for trim material according to claim 20 or 21, wherein the amount of rotation is controllable.   The moving means has a grip feeder that moves the core material in the longitudinal direction by sliding the core material from both sides, and the movement amount of the grip feeder is controllable. The manufacturing apparatus of the core material for trim materials of Claim 20 or 21 characterized by the above-mentioned.

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