JP6800403B2 - Manufacturing method of sealing member with tape - Google Patents

Description

The present invention relates to a method for manufacturing a seal member with tape, and more particularly to a method for manufacturing a seal member with tape to be adhered to a peripheral edge of a window glass of an automobile or the like.

Conventionally, automobile glass (windshield, back glass, etc.) fixedly mounted on a window frame of an automobile has a sealing member made of an elastic member interposed around the peripheral edge thereof. By interposing a seal member, it is possible to prevent dust and water from entering the vehicle from the outside, and waterproofness and soundproofing are ensured. Such a sealing member is adhered to a window frame portion of an automobile body, for example, via double-sided tape.

For example, in Patent Document 1, one side surface of a double-sided tape is continuously attached to an adhesive surface of a sealing member along the longitudinal direction, and then the other side surface of the double-sided tape is used as an interior side surface of an automobile glass. The adhesive structure attached to the periphery of the is disclosed. Further, in Patent Document 1, when the double-sided tape is attached to the adhesive surface of the sealing member, the double-sided tape is crimped at a predetermined pressure by using a crimping roller.

For example, FIG. 12 shows a conventional example of a sticking process of sticking a double-sided tape to a work to be stuck. As shown in FIG. 12, the sticking step is performed using a tape sticking device having a tape feeding means 51 and a crimping roller 52. In FIG. 12, the double-sided tape 53 is held by the tape feeding means 51 with the liner on the work W side peeled off. The tip of the double-sided tape 53 is in a state of protruding from the tape feeding means 51, and in the sticking step, the tape feeding means 51 first approaches the crimping roller 52 and contacts the tip of the double-sided tape 53 with the crimping roller 52. Let me. Then, the crimping roller 52 is lowered in a state where the tip end portion is in contact with the work W, and the tip end portion of the double-sided tape 53 is attached to the adhesive surface of the work W. After that, the double-sided tape 53 can be attached to the work W by moving the crimping roller 52 and crimping.

Japanese Unexamined Patent Publication No. 2007-126067

In recent years, with the increase in speed and automation of devices, high-precision design is required for each member used for assembly and the like. Regarding the sealing member with tape, it is desirable that the adhesive tape is attached at a high accuracy from the viewpoint of adhesiveness to other members and sealing property. In the method of FIG. 12 described above, the sticking angle of the double-sided tape 53 with respect to the work W may vary depending on the amount of the double-sided tape 53 protruding from the tape feeding means 51. As a result, it is considered that the position where the double-sided tape 53 is attached to the work W becomes unstable.

As a countermeasure for this, for example, it is conceivable to use a suction jig that sucks and fixes the double-sided tape. As shown in FIG. 13, the suction jig 54 is installed between the tape feeding means 51 and the crimping roller 52. The suction jig 54 sucks the tip of the double-sided tape 53 protruding from the tape feeding means 51. In this suction state, the suction jig 54 is lowered to attach the tip of the double-sided tape 53 to the adhesive surface of the work W. After that, by crimping with the crimping roller 52, it is considered that the sticking position of the double-sided tape 53 is stabilized to some extent.

However, in the crimping process, when the crimping roller is moved from the tip edge of the double-sided tape to crimp, stress is applied to the adhesive layer of the double-sided tape due to the load of the crimping roller, and the adhesive layer may be displaced. Specifically, as shown in FIG. 14, when the double-sided tape 53 is composed of the liner 53a and the adhesive layer 53b, if the adhesive layer 53b is displaced, the tip position of the double-sided tape 53 on the adhesive layer side and the liner side The tip position of is different. As a result, for example, when the double-sided tape 53 is attached to the work W to which the double-sided tape 55 is attached in advance, the gap CL between the liner 53a of the double-sided tape 53 and the liner 55a of the double-sided tape 55 due to the displacement of the adhesive layer 53b. Is considered to be excessive. As described above, the load applied to the tip edge of the double-sided tape may cause a problem in sticking to other members.

The present invention has been made in view of such circumstances, and is excellent in the accuracy of the sticking position of the adhesive tape when sticking the adhesive tape to the sealing member, and can suppress the displacement of the adhesive layer of the adhesive tape. An object of the present invention is to provide a method for manufacturing a member.

In the method for manufacturing a sealing member with a tape of the present invention, a sealing member with a tape having an adhesive tape having an adhesive layer attached to the sealing surface of the long sealing member along the longitudinal direction is attached to a tape provided with a crimping roller. A method of manufacturing using a sticking device, which includes a pretreatment step of pretreating the sealing surface, and a temporary sticking step of temporarily sticking the tip edge of the adhesive tape at the sticking start position of the pretreated seal surface. A crimping step in which the crimping roller is moved from the tip edge of the temporarily pasted adhesive tape in the sticking direction, which is one direction in the longitudinal direction, and the adhesive tape is sequentially fed from the tape feeding means to be crimped. After the step, the adhesive tape is provided with a cutting step of cutting with a cutting blade, and the temporary sticking step is an adhesion that protrudes from the tape feeding means to a suction jig provided between the tape feeding means and the crimping roller. The tape is attracted, the suction jig is lowered in the suction state, the tip edge of the adhesive tape is stuck at the sticking start position, and then the crimping roller is moved in the direction opposite to the sticking direction to move the tip edge. It is a step of crimping the tip end portion of the adhesive tape including.

The tape sticking device is a device for supplying the adhesive tape from a supply reel around which the adhesive tape is wound to the tape feeding means via a guide roller, and the cutting step is performed on the supply reel and the guide roller. It is characterized by having a peeling step of pressing the adhesive tape hung between them to extraly peel the adhesive tape from the supply reel.

Prior to the temporary sticking step, there is a setting step of setting the sticking start position, and in the setting step, one end of the sealing surface in the longitudinal direction is photographed by a photographing means provided in the tape pasting device. It is characterized in that the pasting start position is set based on the captured image.

The setting step is characterized in that the lower end portion of the suction jig is photographed by the photographing means, and the pasting start position set above is corrected based on the tape protrusion length detected from the photographed image.

The tape length of the adhesive tape temporarily attached to the sealing surface in the temporary attachment step is 5 to 20 mm.

The cutting step is a step of adsorbing one surface of the adhesive tape to the suction surface of the suction jig and cutting with the cutting blade in a state where the other surface of the adhesive tape is fixed by the tape holding jig. It is characterized by being.

The pretreatment step is characterized by including a degreasing step of degreasing the sealing surface of the sealing member, a coating step of applying a primer to the degreased sealing surface, and a drying step of drying the applied primer. ..

The method for manufacturing a sealing member with a tape of the present invention includes a pretreatment step of a sealing surface, a crimping step of moving a crimping roller in a sticking direction which is one direction in the longitudinal direction to crimp the adhesive tape, and a cutting step. It has a temporary sticking step of temporarily sticking the tip edge of the adhesive tape at the sticking start position of the sealing surface after the pretreatment step and before the crimping step. In particular, in the temporary sticking step, after the suction jig that sucks the adhesive tape is lowered and the tip edge of the adhesive tape is stuck at the sticking start position, the crimping roller is moved in the direction opposite to the crimping direction to move the tip edge. Since it is a process of crimping the tip of the adhesive tape including, the tip edge of the adhesive tape can be stably aligned with the starting position of sticking, and the load applied to the tip edge when pressing the crimping roller in the subsequent crimping process is applied. It can be reduced and the displacement of the adhesive layer of the adhesive tape can be suppressed.

An adhesive tape is wound around the supply reel, and when the adhesive tape is pulled, it is peeled off from the supply reel and conveyed to the guide roller. A certain amount of peeling force is required when peeling from the supply reel begins. On the other hand, the cutting step includes a peeling step of pressing the adhesive tape hung between the supply reel and the guide roller to peel off the adhesive tape from the supply reel, so that the next temporary sticking step will be performed. The tip edge can be temporarily attached by the excess peeled adhesive seal, and the tip edge of the adhesive tape is not pulled by the peeling force. Therefore, the load applied to the tip edge can be further reduced, and the displacement of the adhesive layer of the adhesive tape can be suitably suppressed.

In the setting process, one end in the longitudinal direction of the seal surface is photographed by a photographing means provided in the tape attaching device, the attachment start position is set based on the photographed image, and the lower end of the suction jig is further photographed by the photographing means. Since the set sticking start position is corrected based on the tape protrusion length detected from the photographed image, the sticking start position can be controlled with high accuracy, and the tip edge of the adhesive tape is desired on the sealing surface. Can be stably adjusted to the position of.

In the cutting process, one surface of the adhesive tape is adsorbed on the suction surface of the suction jig, and the other side of the adhesive tape is fixed by the tape holding jig and cut by the cutting blade. Therefore, the cutting blade is used for cutting. The adhesive tape can be held stably during the process, and the cutting accuracy can be improved. As a result, the end edge of the adhesive tape after cutting can be aligned with the sticking end position, and the sticking position of the adhesive tape can be controlled with high accuracy.

Since the pretreatment step includes a degreasing step of degreasing the sealing surface of the sealing member, a coating step of applying a primer to the degreased sealing surface, and a drying step of drying the applied primer, an adhesive tape is applied to the sealing surface. Can be stably and firmly adhered.

It is a plan view which shows one form of the seal member with a tape. It is a front schematic of the tape sticking apparatus used in the manufacturing method of this invention. It is a top view of the plan of the tape sticking apparatus used in the manufacturing method of this invention. It is an enlarged schematic view of a sticking unit. It is a process drawing which shows the outline of the manufacturing method of this invention. It is a figure which shows the state which fixed the seal member to a fixing jig. It is a figure for demonstrating the shooting range by a camera. It is a figure which shows the operation of the sticking unit in a temporary sticking process. It is a figure for demonstrating the shooting position of a camera. It is a figure which shows the suction jig and the tape holding jig. It is a figure which shows the operation of the sticking unit in a cutting process. It is a figure which shows the pasting process such as the conventional manufacturing method. It is a figure which shows the sticking process using a suction member. It is a figure which shows the seal member with a tape manufactured by the conventional manufacturing method.

A form of a sealing member with a tape manufactured by the manufacturing method of the present invention will be described with reference to FIG. FIG. 1A is a plan view of the sealing member with tape, FIG. 1B is a sectional perspective view of the sealing member with tape, and FIG. 1C is an enlarged sectional view of double-sided tape. As shown in FIG. 1A, the taped seal member 1 has a long seal member 2 and a double-sided tape 3 attached to a seal surface 2a which is a flat surface of the seal member 2. Double-sided tapes 4 and 5 are attached to both ends of the sealing surface 2a of the sealing member 2 in the longitudinal direction. The double-sided tape 3 is attached discontinuously between the double-sided tapes 4 and 5, and a slight gap is provided between the double-sided tapes 4 and 5. Here, the distance between the liners of the double-sided tapes 3 and 4 and the double-sided tapes 3 and 5 is CL. The CLs may be the same or different from each other, and each is 1.5 mm or less, preferably 0.3 to 1.0 mm.

Since the manufacturing method of the present invention can control the sticking position of the double-sided tape with high accuracy, the double-sided tape 3 is placed between the sealing members 2 to which the double-sided tapes 4 and 5 are pre-sticked on both ends as shown in FIG. 1A. Especially suitable for pasting situations. In the present invention, the double-sided tape stuck on the sticking start side of the double-sided tape 3 is referred to as the double-sided tape 4, and the double-sided tape stuck on the sticking end side of the double-sided tape 3 is referred to as the double-sided tape 5.

The shape of the seal member 2 is not particularly limited, and may be appropriately changed depending on the use of the seal member 1 with tape, the shape of the mating material to which the double-sided tape 3 is adhered, and the like.

As shown in FIG. 1 (c), the double-sided tape 3 has a film-like base material 3a, an adhesive layer 3b provided in layers on both the front and back surfaces thereof, and a liner (release) attached to the surface of one of the adhesive layers 3b. Paper) has 3c. The double-sided tape 3 is adhered to the sealing surface 2a of the sealing member 2 on the surface of the other adhesive layer 3b. The double-sided tapes 4 and 5 also have the same structure as the double-sided tape 3, and are adhered to the sealing surface 2a via an adhesive layer.

The length and width of the double-sided tape 3 in the longitudinal direction are appropriately set depending on the intended use and the like. For example, the longitudinal length is 100-1500 mm and the width is 5-15 mm. The thickness of the double-sided tape 3 is about 0.5 to 1.5 mm in total for the base material 3a and the adhesive layers 3b on both sides.

Various synthetic rubbers can be used as the material of the seal member 2. Synthetic rubbers include, for example, silicone rubber, ethylene propylene rubber (EPDM), acrylonitrile butadiene rubber (NBR), fluorine rubber, isoprene rubber, styrene rubber, butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, chlorosulphonized polyethylene. Examples thereof include vulture rubbers such as rubber, chlorinated polyethylene rubber, and epichlorohydrin rubber. Among these, EPDM rubber is preferably used because it is excellent in weather resistance, water resistance, cold resistance and the like.

As the material of the base material 3a of the double-sided tape 3, acrylic foam, polypropylene, vinyl chloride, polyimide, non-woven fabric and the like can be used. In particular, it is preferable to use acrylic foam because it has excellent adhesive strength and has strong durability even in a harsh temperature environment such as high temperature or low temperature.

The adhesive for the adhesive layer 3b of the double-sided tape 3 is preferably a pressure-sensitive adhesive. Examples of the pressure-sensitive adhesive include acrylic pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, polyester-based pressure-sensitive adhesives, and polyamide-based pressure-sensitive adhesives. , Vinyl alkyl ether type pressure sensitive adhesive, fluorine type pressure sensitive adhesive, polyacrylamide type pressure sensitive adhesive and the like.

A tape sticking device for manufacturing a taped seal member will be described with reference to FIGS. 2 and 3. FIG. 2 is a schematic front view of the tape sticking device, and FIG. 3 is a plan schematic view of the tape sticking device. 2 and 3 show a state in which the seal member is set on the fixing jig as a work (attached object).

As shown in FIG. 2, the tape sticking device 11 is located below the sticking unit 12 provided on the upper right side of the device, the degreasing / primer unit 13 provided on the upper left side of the device, and the units 12 and 13, respectively. A processing base 14 provided in the central portion of the apparatus and a drying means 16 are provided. A seal member 2 set on the fixing jig 15 is placed on the processing base 14. Each of the units 12 and 13 is provided so as to be movable relative to the machining base 14. Each of the units 12 and 13 can move in the X-axis direction and the Y-axis direction. The X-axis direction is the width (horizontal) direction of the device, and the Y-axis direction is the height (vertical) direction of the device. Further, the tape sticking device 11 has a camera 17a integrally attached to the sticking unit 12 and a camera 17b attached to the left side of the device as photographing means. The camera 17a is attached facing downward so that the mounted seal member 2 can be photographed from above.

As shown in FIG. 3, the tape affixing device 11 has a coating lane L1 for applying a degreasing / primer unit 13 to the work and a pasting lane L2 for affixing double-sided tape to the work using the affixing unit 12. There is. That is, the degreasing / primer unit 13 moves on the coating lane L1 in the X-axis direction, and the sticking unit 12 moves on the sticking lane L2 in the X-axis direction. The degreasing / primer unit 13 has a degreasing portion 13a and a primer portion 13b, which are provided side by side along the X-axis direction. The sticking lane L2 is located on the front side of the device, and the coating lane L1 is located on the back side of the device. Each lane extends in the X-axis direction and is parallel to each other. The processing base 14 is movable in the Z-axis direction, and moves between the lanes L1 and L2 according to the manufacturing process. FIG. 3 shows a state in which the processing base 14 is in the attachment lane L2. The Z-axis direction is the depth direction of the device. The camera 17b is on the front side of the sticking lane L2 and is provided toward the sticking lane L2. In FIGS. 2 and 3, the sticking direction is from the right side to the left side in the drawing.

The sticking unit 12 will be described with reference to FIG. The sticking unit 12 includes a supply reel 18 on which double-sided tape is wound, a guide roller 19 for guiding the double-sided tape supplied from the supply reel 18, a tape feeding means 20, a suction jig 21, a cutting blade 22, and the like. It has a crimping roller. In FIG. 4, two rollers having different hardness are provided as the crimping rollers, and the first crimping roller 23 located on the downstream side in the sticking direction is a roller having a lower hardness than the second crimping roller 24. The hardness of the roller is, for example, the durometer A hardness measured according to JIS K 6253. The sticking unit 12 may have one crimping roller as the crimping roller.

Further, in FIG. 4, a cylinder 25 is provided between the supply reel 18 and the guide roller 19. When the double-sided tape 3 is peeled off from the supply reel 18, it is turned by the guide roller 19 and sent from the tape feeding means 20 to the crimping rollers 23 and 24 with the liner facing upward and the exposed adhesive layer facing downward. .. The double-sided tape 3 is attached to the work by attaching and crimping the double-sided tape 3 sequentially fed from the tape feeding means 20 with the crimping rollers 23 and 24. The tape feeding means 20 is composed of a roller and a holding plate for the role of fixing the double-sided tape at the time of cutting.

The manufacturing method of the present invention is a method of manufacturing a seal member with a tape by using the tape sticking device described above. The production method of the present invention includes at least the five steps (a) to (e) shown in FIG. That is, (a) a work setting step of setting the seal member on the fixing jig, (b) a pretreatment step of pretreating the seal surface of the seal member, and (c) temporarily attaching the tip edge of the double-sided tape to the seal member. It includes a temporary pasting step of pasting, (d) a crimping step of crimping a double-sided tape using a crimping roller, and (e) a cutting step of cutting the double-sided tape with a cutting blade after the crimping step. Each step will be described below.

(A) Work setting process The work setting process is a process of setting a sealing member on a fixing jig and charging it into a processing base. The fixing jig is, for example, a jig for sandwiching and fixing a part of the sealing member. As shown in FIG. 6, the fixing jig 15 is composed of a substrate 15a, a fixing plate 15b provided on the substrate 15a, and a movable plate 15c. A part of the seal member 2 (for example, a convex portion on the opposite side of the seal surface 2a) is attached to the gap provided between the fixed plate 15b and the movable plate 15c, and the movable plate 15c is directed toward the fixed plate 15b. The seal member 2 is fixed by moving in the direction of the arrow. In the fixed state, the convex portion is elastically deformed.

By pressing the start switch of the tape affixing device after putting it in the processing base, the manufacturing process described later is automatically carried out. When the tape application device 11 is activated, the processing base 14 first moves to the back side of the device (coating lane L1) (see FIG. 3).

(B) Pretreatment Step The pretreatment step is a step of pretreating the sealing surface of the sealing member by the degreasing / primer unit. The pretreatment step includes a degreasing step of degreasing the sealing surface of the sealing member, a coating step of applying a primer to the degreased sealing surface, and a drying step of drying the applied primer. The degreasing step can be omitted as appropriate.

The pretreatment step will be specifically described with reference to the tape application device 11 shown in FIG. First, the degreasing / primer unit 13 moves to the right side in the drawing to a predetermined position, and the degreasing portion 13a descends. Then, the degreasing portion 13a moves to the right side in the drawing to remove (wipe off) oil and dirt on the sealing surface. After degreasing to a predetermined position, the degreasing portion 13a rises and further moves to the right side in the figure to complete the degreasing step. The oil and the like are wiped off using felt or the like soaked with a toluene solvent.

In the subsequent coating step, the coating portion 13b is lowered, and the coating portion 13b is moved to the left side in the drawing to apply the primer to the sealing surface. After coating to a predetermined position, the coating portion 13b rises, and the degreasing / primer unit 13 returns to the initial position (position on the left side of the device). This completes the coating process. A known primer can be used as the primer, but it is preferable to use a primer that develops a fluorescent color by irradiation with black light. Further, as the coating method, a known method such as dispenser coating or roll coating can be adopted. For example, the primer may be dropped at predetermined intervals and spread evenly.

In the subsequent drying step, air is blown onto the surface coated with the primer by the drying means 16. By forcibly drying using a drying means, the coated surface can be quickly dried. In addition, you may dry by leaving it for a predetermined time without using a drying means.

During the drying of the primer, a setting step of setting the start position of the double-sided tape is performed using the cameras 17a and 17b shown in FIG. In the setting step, first, while the sticking unit 12 moves to the left side in the drawing, a predetermined position of the coating surface is photographed by the camera 17a. The shooting range of each camera in this setting step will be described with reference to FIG. FIG. 7A is a plan view of the coated seal member viewed from above, and the camera 17a is omitted for convenience. As the camera 17a moves in the direction of the arrow along the longitudinal direction of the seal member 2, the ranges r1 to r5 are photographed. The range r1 is the end of the coated surface near the double-sided tape sticking start position, and the double-sided tape sticking start reference position P0 is set by photographing the range r1. Specifically, the tip edge 4a of the double-sided tape 4 pasted in advance is recognized in the photographed image, and a position at a predetermined distance from the tip edge 4a is set to the reference position P0.

Further, the application state of the primer can be determined by photographing the coated surface at a plurality of locations (ranges r2 to r5) with the camera 17a while irradiating the black light. As for the coating state, for example, the area developed by black light is calculated from the captured image, and if the area is equal to or more than a predetermined value, it is determined that the primer is applied. The ranges r2 to r5 are preferably set at positions where the coating state tends to be unstable. Further, the number of shooting locations by the camera 17a is not limited to the form shown in FIG. 7A.

In FIG. 2, after photographing the ranges r1 to r5, the sticking unit 12 further moves to the left side in the drawing, then descends and moves to the front of the camera 17b. Then, as shown in FIG. 7B, the lower end portion (range r6) of the suction jig 21 is photographed by the camera 17b (not shown). From this photographed image, the tape protrusion length of the double-sided tape 3 protruding from the suction jig 21 is calculated, and the tape sticking start position is corrected. That is, the sticking start reference position P0 is corrected to P1 based on the protruding length of the double-sided tape 3. After that, the sticking unit rises and returns to the initial position (the position on the right side of the device). In the following, the pasting start position (including after correction) set through the setting process is referred to as P.

After the drying step is completed, the processing base 14 moves to the front side of the device (attachment lane L2) (see FIG. 3). Further, in the above, the setting step of the sticking start position using the camera was performed during the drying step, but the setting step may be performed before the temporary sticking step.

(C) Temporary pasting step The temporary pasting step is a step of temporarily pasting the tip edge of the double-sided tape on the sealing surface. In FIG. 2, in the temporary sticking step, the sticking unit 12 first moves to the left side in the drawing to the sticking start position set in the setting step. Then, the sticking unit 12 is lowered to a predetermined height, and the tape holding jig (see FIG. 10), which will be described later, is released from being fixed. As a result, the double-sided tape can be fed out from the tape feeding means. The subsequent temporary pasting step will be described with reference to FIG. In FIG. 8, the portions of the double-sided tape other than the liner are collectively shown as an adhesive portion.

In FIG. 8, in the state of (a), the sticking unit 12 is moved so that the position of the tip edge 3d of the double-sided tape 3 is aligned with the sticking start position P of the sealing surface 2a. Then, the suction jig 21 is lowered, and the tip edge 3d of the double-sided tape 3 is attached to the sealing surface 2a (b). After that, the suction jig 21 is raised (c). In this raised state, the double-sided tape 3 is placed without applying a load. After that, the first crimping roller 23 is moved to a predetermined position on the left side in the drawing in a non-contact state with the double-sided tape 3 (d). Specifically, the first crimping roller 23 is moved from the tip edge 3d of the double-sided tape 3 to a position downstream of the sticking direction by 5 to 20 mm. After that, the sticking unit 12 is lowered and the first crimping roller 23 is pressed against the double-sided tape 3 (e). With the rollers pressed against each other, the first crimping roller 23 is moved to the right side in the drawing, and the tip of the double-sided tape 3 is crimped and temporarily attached to the sealing surface (f). Bond length _{L a} of the temporarily attached by double-sided tape 3 is, for example, 5 to 20 mm. Bond length _{L a} is, 10-15 mm is preferred.

As described above, in the temporary pasting step, before the crimping step, the tip end portion (including the tip edge) of the double-sided tape is crimped in the direction opposite to the sticking direction in the crimping step and temporarily pasted. That is, by moving the crimping roller from the end side of the double-sided tape toward the tip edge and temporarily attaching the tip of the adhesive tape to the tape surface, the load applied to the tip edge in the subsequent crimping process is reduced. ing.

(D) Crimping step The crimping step is a step of crimping the double-sided tape using a crimping roller. In this step, the first crimping roller 23 and the second crimping roller 24 move from the sticking start position P of the sealing surface 2a to the sticking end position while sticking and crimping the double-sided tape 3. That is, the first crimping roller 23 and the second crimping roller 24 move from the tip edge 3d of the double-sided tape 3 toward the end side. In FIG. 2, the sticking / crimping is performed by moving the sticking unit 12 to the left side in the drawing.

In this crimping step, it is preferable to crimp the double-sided tape in the order of the relatively soft first crimping roller and the relatively hard second crimping roller. In the crimping process, the double-sided tape is applied while being stretched, so the double-sided tape itself tries to shrink, but by crimping with the relatively soft first crimping roller first, the shrinkage of the double-sided tape can be suppressed. .. As the first crimping roller 23, for example, a silicon roller is used.

In the crimping step, after the sticking unit 12 has moved to a predetermined position, the stop position of the sticking unit 12 is confirmed. Specifically, as shown in FIG. 9A, a camera 17b (see FIG. 2) photographs the vicinity of the pasting end position (range r7), and the first crimping roller 23 and the double-sided tape 5 are photographed based on the photographed image. The distance D from the tip edge 5a is calculated. The distance D is the length in the X-axis direction, and is obtained by drawing a perpendicular line from the most advanced portion in the traveling direction of the first crimping roller 23 to the sealing surface. The stop position of the sticking unit 12 is corrected based on the distance D, and the sticking unit 12 is moved to the corrected stop position. Since the double-sided tape 3 is stretched in the crimping step, the position of the end edge of the double-sided tape after cutting may vary. In this respect, by correcting the stop position of the sticking unit 12 by the distance D, the position of the end edge can be controlled with high accuracy. As a result, the gap between the pre-attached double-sided tape 5 and the double-sided tape 3 can be set to a predetermined interval.

Further, the camera 17b is preferably installed at a position close to the sticking unit 12 so that the distance D can be calculated accurately. For example, FIG. 9B shows a case where the camera 17b is installed on the back side of the tape application device, that is, on the back side of the coating lane L1. Since the double-sided tape 3 is attached and crimped in the lane on the front side of the tape attaching device (attaching lane L2), in this case, the distance between the camera 17b and the attaching unit may become long, and the accuracy of the distance D may be inferior. There is. As a result, the position of the end edge 3e of the double-sided tape 3 may vary, and CL may become excessively large. On the other hand, FIG. 9C shows a case where the camera 17b is installed on the front side of the sticking lane L2 and at a position where the tape sticking device can be photographed from the front. In this case, the distance between the camera 17b and the sticking unit is shortened, and the camera can be photographed from the front, so that the distance D can be calculated with high accuracy. As a result, the variation in the position of the terminal edge 3e can be minimized.

(E) Cutting step The cutting step is a step of cutting the double-sided tape with a cutting blade. As shown in FIG. 10, in the cutting step, the double-sided tape 3 is fixed by the tape holding jig 26 and the suction jig 21, and the double-sided tape 3 is cut by the cutting blade 22 in the fixed state.

As shown in FIG. 10A, the suction jig 21 has a suction surface 21a that guides the liner side of the double-sided tape, and a suction hole 21b formed in a recess recessed from the suction surface 21a. The suction hole 21b is connected to a suction device (not shown), and the double-sided tape 3 is sucked onto the suction surface 21a by being sucked from the suction hole 21b. As shown in FIG. 10B, in the cutting step, the released tape holding jig 26 slides to fix the exposed adhesive layer 3b side of the double-sided tape 3. Then, the double-sided tape 3 is cut by driving the cutting blade 22 perpendicularly to the surface of the double-sided tape. After cutting, a part of the double-sided tape protrudes from the suction jig 21, and the length of this portion is the tape protrusion length L _b . By fixing the double-sided tape 3 from both sides by using the suction jig 21 and the tape holding jig 26 in this way, the double-sided tape can be stably fixed at the time of cutting. As a result, the deviation at the time of cutting is suppressed, and the position of the end edge of the double-sided tape can be controlled with high accuracy.

Further, the cutting step includes a peeling step of applying pressure to the double-sided tape located between the supply reel 18 and the guide roller 19 to excessively peel the double-sided tape from the supply reel 18. As shown in FIG. 11A, in this peeling step, the double-sided tape 3 is pressed from the liner side by the cylinder 25, and the double-sided tape 3 is peeled from the supply reel 18 by a predetermined length. The extra peeling length may be such that the double-sided tape does not need to be peeled from the supply reel 18 in the next temporary sticking step, and is, for example, 10 mm or more, preferably 10 mm or more. It has a length of 30 mm or more. The upper limit is preferably 50 mm or less. At the end of sticking the double-sided tape, as shown in FIG. 10B, the double-sided tape between the supply reel 18 and the guide roller 19 is in a loosened state.

When the double-sided tape 3 is started to be peeled from the supply reel 18, a peeling force for peeling is applied to the double-sided tape. This peeling force is about 1 to 5 N. For example, when the double-sided tape 3 is placed on the sealing surface 2a without applying a load as shown in FIGS. 8 (b) and 8 (c), the double-sided tape 3 is used. The tip edge 3d is pulled by the peeling force, which causes stress to be applied to the adhesive layer of the double-sided tape 3, which may cause the adhesive layer to shift. Specifically, it is conceivable that the state shown in FIG. 14 will occur. Therefore, by using the cylinder 25 to loosen the double-sided tape at the end of sticking, it is possible to reduce the load applied to the tip edge of the double-sided tape in the next temporary sticking step.

After the cutting process is completed, the sticking unit 12 rises and moves to the initial position (position on the right side of the device). Then, the fixing jig 15 is discharged from the processing base 14, and the sealing member 1 with tape is taken out.

Although the manufacturing method of the present invention has been described above with reference to each figure, it is not limited to the above-described configuration. For example, the structure of the double-sided tape is not limited to the structure shown in FIG. 1 (c), and the portion other than the liner may be composed of only the adhesive layer. Further, the tape is not limited to the double-sided tape, and may be an adhesive tape having an adhesive layer on at least one surface. Further, the present invention is not limited to the case where the double-sided tape is attached between the sealing members to which the double-sided tape is attached to both ends in advance, but also the case where the double-sided tape is attached to the sealing surface of the sealing member to which the double-sided tape is not attached to both ends.

The manufacturing method of the present invention is widely used as a manufacturing method of a sealing member with tape because it is excellent in accuracy of the sticking position of the adhesive tape when sticking the adhesive tape to the sealing member and can suppress the displacement of the adhesive layer of the adhesive tape. it can.

1 Sealing member with tape 2 Sealing member 3 Double-sided tape 4 Double-sided tape 5 Double-sided tape 11 Tape sticking device 12 Sticking unit 13 Solvent degreasing / primer unit 14 Processing base 15 Fixing jig 16 Drying means 17a Camera 17b Camera 18 Supply reel 19 Guide roller 20 Tape feeding means 21 Suction jig 22 Cutting blade 23 1st crimping roller 24 2nd crimping roller 25 Cylinder 26 Tape holding jig L1 Coating lane L2 Sticking lane

Claims (7)

A method of manufacturing a tape-attached seal member to which an adhesive tape having an adhesive layer is attached to the seal surface of a long-shaped seal member along a longitudinal direction by using a tape affixing device equipped with a crimping roller.
A pretreatment step of pretreating the sealing surface, a temporary sticking step of temporarily sticking the tip edge of the adhesive tape at the sticking start position of the pretreated seal surface, and the adhesive tape temporarily sticking the crimping roller. A crimping step of moving the adhesive tape from the tip edge of the tape in the sticking direction, which is one direction in the longitudinal direction, and crimping the adhesive tape while sequentially feeding the adhesive tape from the tape feeding means, and cutting the adhesive tape with a cutting blade after the crimping step. With a cutting process
In the temporary sticking step, the adhesive tape protruding from the tape feeding means is sucked by the suction jig provided between the tape feeding means and the crimping roller, and the suction jig is lowered in the sucking state to stick the tape. It is a step of sticking the tip edge of the adhesive tape at the start position and then moving the crimping roller in the direction opposite to the sticking direction to crimp the tip of the adhesive tape including the tip edge. A method of manufacturing a sealing member with tape. The tape sticking device is a device that supplies the adhesive tape from a supply reel around which the adhesive tape is wound to the tape feeding means via a guide roller.
The cutting step is characterized by having a peeling step of pressing the adhesive tape hung between the supply reel and the guide roller to extraly peel the adhesive tape from the supply reel. 1. The method for manufacturing a sealing member with a tape according to 1. Prior to the temporary pasting step, there is a setting step of setting the pasting start position.
The setting step is characterized in that one end of the seal surface in the longitudinal direction is photographed by an imaging means provided in the tape application device, and the application start position is set based on the photographed image. 1 or the method for manufacturing a sealing member with a tape according to claim 2. The setting step is characterized in that the lower end portion of the suction jig is photographed by the photographing means, and the set sticking start position is corrected based on the tape protrusion length detected from the photographed image. Item 3. The method for manufacturing a sealing member with a tape according to Item 3. The sealing member with tape according to any one of claims 1 to 4, wherein the adhesive tape temporarily attached to the sealing surface in the temporary attaching step has a tape length of 5 to 20 mm. Manufacturing method. The cutting step is a step of adsorbing one surface of the adhesive tape to the suction surface of the suction jig and cutting with the cutting blade in a state where the other surface of the adhesive tape is fixed by the tape holding jig. The method for manufacturing a sealing member with a tape according to any one of claims 1 to 5, wherein the sealing member has a tape. The pretreatment step is characterized by including a degreasing step of degreasing the sealing surface of the sealing member, a coating step of applying a primer to the degreased sealing surface, and a drying step of drying the applied primer. The method for manufacturing a seal member with a tape according to any one of claims 1 to 6.

Images