Scraper rubber regeneration device, scraper rubber regeneration method, and regenerated scraper rubber manufacturing method

Abstract

Provided is a scraper rubber regeneration device capable of regenerating scraper rubber having reduced scraping performance with higher accuracy. The blade rubber regeneration device includes a blade portion for cutting an end of a lip portion of the blade rubber in a longitudinal direction of the blade rubber. The regeneration device relatively moves the blade portion from an end portion A, which is one end portion in the longitudinal direction of the blade rubber, to an end portion B, which is the other end portion, so as to cut a part of the tip of the lip portion. The regeneration device includes a lip clamping member, an urging member abutting against and urging an end portion B of the lip, and a pressing member for pressing a tip end of the lip. The clamping member clamps at least a part of the lip portion from both side portions of the lip portion under specific conditions. The pressurizing member pressurizes the tip of the lip prior to movement.

Description

Technical Field

[0001] The present disclosure relates to a scraper rubber regeneration device, a scraper rubber regeneration method and a manufacturing method of the regenerated scraper rubber for a scraper blade in a wiper for cleaning a scraping object such as a windshield of a vehicle, such as an automobile, a rail vehicle, an aircraft, a ship, etc. (hereinafter, also referred to as a "vehicle" for short). Background Art

[0002] In a blade rubber in a wiper blade for a vehicle, a contact portion at the tip that contacts a windshield glass gradually wears due to long-term use, which causes irregular scraping, etc. Patent document 1 discloses a regeneration cutter for regenerating a blade rubber tip by cutting off the blade rubber tip whose scraping performance is reduced due to long-term use of the wiper blade.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2006-174980 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] However, according to the inventor's inspection, the scraping performance of the wiper blade regenerated by the cutter for regenerating the wiper blade according to Patent Document 1 is not satisfactory at all. In recent years, in automobiles, for example, a driving assistance system using an on-board camera has been put into practical use, and the development of an automatic driving system has also been promoted. Therefore, now, in order to prevent the on-board camera from erroneously recognizing stains adhering to the windshield, the wiper blade requires a relatively high scraping performance.

[0008] Therefore, at least one aspect of the present disclosure is to provide a scraper rubber regeneration device that can regenerate a scraper rubber whose scraping performance has been reduced with higher accuracy. In addition, at least one aspect of the present disclosure is to provide a scraper rubber regeneration method for regenerating the scraping performance of a scraper rubber whose scraping performance has been reduced. In addition, at least one aspect of the present disclosure is to provide a method for manufacturing a regenerated scraper rubber that has the same degree of scraping performance as a new product.

[0009] Solutions for solving problems

[0010] According to at least one aspect of the present disclosure, there can be provided a scraper rubber regenerating device, wherein the scraper rubber is provided on a scraper blade of a scraper device for a windshield of a vehicle, wherein

[0011] The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber.

[0012] The scraper rubber has a base, a lip, and a neck, the base being an attachment portion for attaching the scraper rubber to the scraper support, and the neck connecting the lip to the base in a swingable manner,

[0013] At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield.

[0014] The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber,

[0015] The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction.

[0016] The regeneration device comprises:

[0017] a clamping member that clamps the lip;

[0018] a biasing member that contacts the end B of the lip and biases the lip toward the end A; and

[0019] a pressing member that presses the distal end of the lip toward the base,

[0020] The clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber,

[0021] The clamping member is arranged at a position capable of clamping at least a portion of the lip into which the blade portion enters, and the position of the clamping member relative to the blade rubber is fixed, and

[0022] The pressing member presses the tip of the lip portion toward the base portion before the relative movement of the blade portion from the end portion A to the end portion B.

[0023] At least one aspect of the present disclosure provides a method for regenerating a blade rubber provided in a wiper blade for a windshield wiper device in a vehicle.

[0024] The method comprises:

[0025] The process of fixing the scraper rubber to the above regeneration device; and

[0026] The step of cutting off a portion of a distal end of the lip portion of the blade rubber by the regenerating device.

[0027] In at least one aspect, a method for manufacturing a regenerated blade rubber is provided, wherein the method regenerates the blade rubber in a wiper blade for a windshield wiper device provided in a vehicle.

[0028] The method comprises:

[0029] The process of fixing the scraper rubber to the above regeneration device; and

[0030] The step of obtaining the regenerated blade rubber by cutting off a part of the distal end of the lip portion of the blade rubber by the regenerating device.

[0031] Effects of the Invention

[0032] According to at least one aspect of the present disclosure, a scraper rubber regeneration device can be provided, which can regenerate a scraper rubber whose scraping performance has been reduced with high accuracy. In addition, according to at least one aspect of the present disclosure, a scraper rubber regeneration method can be provided, which can restore the scraping performance of a scraper rubber whose scraping performance has been reduced. According to at least one aspect of the present disclosure, a method for manufacturing a regenerated scraper rubber having the same degree of scraping performance as a brand new product can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] [ Figure 1 ] Figure 1 is a schematic diagram of a scraper blade and a scraper rubber.

[0034] [ Figure 2 ] Figure 2 It is a diagram for explaining the deformation of the lips.

[0035] [ Figure 3 ] Figure 3 is a diagram for explaining the deformation of the lips.

[0036] [ Figure 4 ] Figure 4 It is a diagram for explaining the deformation of the lips.

[0037] [ Figure 5 ] Figure 5 It is a diagram for explaining the deformation of the lips.

[0038] [ Figure 6 ] Figure 6 It is a schematic diagram of a scraper rubber regeneration device.

[0039] [ Figure 7 ] Figure 7 is a schematic diagram for explaining the cutting unit.

[0040] [ Figure 8 ] Figure 8 is a schematic diagram for explaining a cutting unit and a clamping member.

[0041] [ Fig. 9 ] Fig. 9 It is a diagram for explaining a clamping member.

[0042] [ Fig.10 ] Fig.10 It is a diagram for explaining a pressurizing member.

[0043] [ Fig.11 ] Fig.11 It is a diagram for explaining a force applying member.

[0044] [ Fig.12 ] Fig.12 This is a further enlarged view of the area around the tip of the blade and lip.

[0045] [ Fig.13 ] Fig.13 It is a diagram for explaining a force applying member.

[0046] [ Fig.14 ] Fig.14 It is a diagram for explaining a force applying member.

[0047] [ Fig.15 ] Fig.15 It is an explanatory diagram of the scratch test in Example. DETAILED DESCRIPTION

[0048] In the present disclosure, unless otherwise specified, the expressions "from XX to YY" and "XX to YY" indicating a numerical range indicate that the numerical range includes the lower limit and the upper limit as endpoints. In the case of a numerical range described in stages, the upper and lower limits of each numerical range can be arbitrarily combined.

[0049] Hereinafter, embodiments for carrying out the present disclosure will be specifically illustrated with reference to the accompanying drawings. However, the size, material, shape, and relative configuration of the components described in this mode are appropriately changed depending on the construction of the components to which the present disclosure is applied and various conditions. That is, the scope of the present disclosure is not intended to be limited to the following embodiments. In addition, in the following description, components having the same function are represented by the same reference numerals in the drawings, and their descriptions are omitted in some cases.

[0050] The scraper device can be used to scrape objects, such as transportation equipment including vehicles, aircraft, ships, etc. represented by automobiles, industrial machinery equipment including construction machinery, etc. These transportation equipment and industrial machinery equipment are also collectively referred to as vehicles below. The scraper device can be applied to the windshield of the vehicle. The windshield is not limited to the front window, but includes side windows and rear windows.

[0051] In addition, the scraper device including the scraper blade can also be used for scraping objects such as lens devices of web cameras, protective glass surfaces of camera devices, etc. Hereinafter, the scraper blade for a vehicle windshield will be described as an example, but the scraper blade is not limited thereto.

[0052] like Figure 1 As shown in FIG. 1A , for example, the scraper device includes a scraper arm 300 and a scraper blade 200 attached to the scraper arm 300. For example, the scraper arm 300 cooperates with a drive motor (not shown). And the scraper blade 200 has a scraper rubber 100 and a scraper bracket 210 supporting the scraper rubber 100. For the scraper bracket 210, in addition to the Figure 1 In addition to the tournament type shown in A, various known support members such as a flat type may be adopted.

[0053] like Figure 1 As shown in FIG. 2B , the blade rubber 100 includes a base 1 which is an attachment portion of the blade rubber 100 to the blade holder 210 and a lip 3 which is swingably coupled to the base 1 through a neck 2. The scraper blade is formed to have a substantially uniform cross-sectional shape in the longitudinal direction.

[0054] In a cross section in a direction orthogonal to the longitudinal direction of the scraper blade, the lip 3 includes a shoulder extending to a side farther than the neck on the end of the neck side of the lip 3. In addition, in order to stabilize the contact posture of the scraper blade, a tapered portion 4 may be provided, the width of which gradually decreases from a side close to the base 1 in a direction away from the base 1. In addition, the degree of gradual decrease in the width of the tapered portion 4 may be changed in a step-like manner. For example, the lip 3 may have a lip end portion, wherein the degree of gradual decrease in the width of the tapered portion becomes smaller on a side close to the end of the lip away from the base 1. In addition, on the lip end portion, a portion having the same or substantially the same width from the side close to the base 1 toward the end may be provided. Figure 1 The wiper blade shown in B has a plate-like member that is continuous to the tapered portion 4 at the tip end side of the lip portion 3 .

[0055] The scraper device cleans the surface of the member to be cleaned by bringing at least a portion of the tip of the lip 3 into contact with the surface of the windshield as the member to be cleaned (represented by the glass surface). As a result, at least a portion of the tip of the lip 3 constitutes a contact portion that contacts the windshield. In the lip 3, the contact portion is formed by extending in the longitudinal direction of the scraper rubber.

[0056] For example, in a cross section in a direction orthogonal to the longitudinal direction of the scraper blade, the neck 2 has a smaller width than the base 1 and the lip 3. In addition, for example, the lip is an elastic body. As a result, the lip 3 is inclined in the scraping direction, and at least a portion of the lip 3 contacts the surface of the member to be cleaned.

[0057] like Figure 1 As shown in FIG. 2B , the lip 3 has a first side surface 5 continuous from the tapered portion 4, a second side surface 6 on the side opposite to the first side surface 5, and a terminal surface 7 on the side farthest from the base 1 of the lip 3, which together with the first side surface 5 and the second side surface 6 form a first edge 8 and a second edge 9. The portion of the terminal end of the lip 3 cut off by the regeneration device is a portion including at least the terminal surface 7. For example, the terminal end of the lip 3 may be cut off parallel to the terminal surface 7, thereby forming a new terminal surface.

[0058] As described above, the contact portion of the lip 3 with the windshield is worn due to long-term use, and irregular scratches and the like may occur. Patent document 1 discloses a regeneration cutter for cutting off the end of the lip and regenerating the scraper rubber. However, the scraping performance of the regenerated scraper blade regenerated by the regeneration cutter according to patent document 1 is lower than that of a brand new product of the scraper blade. Specifically, irregular scratches may be generated at the end portion, etc. The reason can be considered to be as follows.

[0059] The blade rubber is generally formed of natural rubber or synthetic rubber, which is soft. And, when the end of the soft blade rubber is cut off by the regeneration cutter according to Patent Document 1, there is a case where the cut surface of the lip of the blade rubber is deformed during various processes of cutting.

[0060] First, when cutting, the blade of the regenerating cutter is brought into contact with the side surface of one end of the lip of the scraper rubber (see Figure 2 A), and then make the blade enter the lip. At this time, the side surface of the lip may be deformed due to the pressure of the blade when entering. Figure 2 B. As a result, Figure 2 As shown in C, in some cases, the end of the blade rubber becomes an R surface after cutting. There is a possibility that the regenerated blade rubber having the above-mentioned shape may be irregularly scratched on the end surface.

[0061] In addition, in some cases, a scraper blade flutter may occur in a scraper blade rubber having a lip portion whose cut surface is deformed during scraping. If the cut lip portion is deformed, the contact pressure of the lip portion to the glass surface becomes uneven in the longitudinal direction of the scraper blade rubber, and a portion with high contact pressure occurs locally. In the portion with local high contact pressure, stick-slip or hooking between the scraper blade rubber and the glass surface is believed to cause scraper blade flutter.

[0062] Then, the blade is made to enter from the side surface of one end side of the scraper rubber, and the cutting of the end of the scraper rubber is continued while the blade moves toward the other end side in the longitudinal direction of the scraper rubber. Figure 3 As shown by the dotted line in A, the blade moves in an upward direction from one end of the lip to the other end, and in some cases the scraper blade has a shape like Figure 3 The shape shown in B. The thinner the thickness of the portion to be cut in the scraper rubber, the more significant the above-mentioned deviation in the advancing direction of the blade portion. Note that since the thickness of the portion to be cut of the scraper rubber is small, it is considered that the deviation in the advancing direction of the blade portion is caused by the force applied to the blade portion to advance the blade portion, which tends to go upward. The recycled scraper rubber having the above-mentioned cutting surface may cause irregular scraping, scraper blade chatter and abnormal sound in some cases.

[0063] Finally, even if the blade can be advanced to the other end side of the scraper rubber, as Figure 4 As shown in FIG. 1A , as the blade approaches the side surface of the other end side of the scraper rubber, the end of the lip on the other end side is elastically deformed in some cases. It is considered that the expansion of the tip side of the lip 3 is greater than the expansion of the base 1 side of the lip 3, and therefore, the elastic deformation as described above can be easily performed. By the expansion of this elastic deformation, the advancing direction of the blade is also shifted upward, and in some cases, the other end side of the regeneration scraper blade has burrs, such as Figure 4 B. In some cases, the recycled blade rubber having the above-mentioned cut surface may also produce irregular scraping, scraper blade chatter and abnormal sound.

[0064] As described above, there are reasons for the shape deformation of the end portion of the regenerated blade rubber at each process of the start of cutting, during cutting, and at the end of cutting. Figure 5 As shown, for example, in some cases, a regenerated scraper rubber having a cut surface having an S-shaped curve from one end side (end A) to the other end side (end B) is obtained. The inventors have examined to prevent deformation of the cut surface in the manufacturing process of the regenerated scraper rubber, that is, in each process of cutting the scraper rubber, so that the scraper rubber can be regenerated with higher accuracy and a regenerated scraper blade having a scraping performance as good as that of a brand new scraper rubber can be obtained. As a result, the following scraper rubber regeneration device, scraper rubber regeneration method, and regenerated scraper blade manufacturing method have been found.

[0065] One aspect of a scraper rubber regeneration device according to the present disclosure is a scraper rubber regeneration device, wherein the scraper rubber is provided on a scraper blade of a scraper device for a windshield of a vehicle, wherein

[0066] The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber.

[0067] The scraper rubber includes a base, a lip, and a neck, wherein the base is an attachment portion for attaching the scraper rubber to the scraper support, and the neck connects the lip to the base in a swingable manner.

[0068] At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield.

[0069] The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber,

[0070] The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction.

[0071] The regeneration device comprises:

[0072] a clamping member that clamps the lip;

[0073] a biasing member that contacts the end B of the lip and biases the lip toward the end A; and

[0074] a pressing member that presses the distal end of the lip toward the base,

[0075] The clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber,

[0076] The clamping member is arranged at a position capable of clamping at least a portion of the lip into which the blade portion enters, and the position of the clamping member relative to the blade rubber is fixed, and

[0077] The pressing member presses the tip of the lip portion toward the base portion before the relative movement of the blade portion from the end portion A to the end portion B.

[0078] Will use Figure 6 , Figure 7 A. Figure 7 B. Figure 8 A and Figure 8 B explains the blade rubber regenerating device according to one aspect of the present disclosure as an example. Figure 6 2 is a schematic diagram showing the appearance of the blade rubber regenerating device 20 . Figure 7 A and Figure 7 B is a schematic diagram for explaining the cutting unit 30 including the blade and the cutting action. Figure 8 A is a cross-sectional view of the cutting unit 30 and the scraper rubber of the clamping member 21 in the short side direction, Figure 8 B is an enlarged view of the vicinity of the blade portion 31 .

[0079] The blade rubber regenerating device 20 includes a lip clamping member 21 as a blade rubber fixing member for fixing the blade rubber 100. The clamping member 21 fixes the blade rubber by clamping the lip 3 from the short side direction of the blade rubber. For example, Figure 1 The first side surface 5 and the second side surface 6 in B are sandwiched. That is, the sandwiching member 21 sandwiches the lip 3 from both side portions of the lip 3 in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber.

[0080] exist Figure 6 In the embodiment, the clamping member 21 is fixed to the base 16 by the holding member 15 having an L-shaped cross section as viewed in the longitudinal direction of the blade rubber.

[0081] like Figure 8 B (enlarged image on the right) and Fig. 9 B, the clamping member 21 is arranged in a position capable of clamping at least a portion (end A) into which the blade 31 enters relative to the lip 3. In the figure, the clamping member 21 clamps the entire area in the longitudinal direction of the lip 3, including the portion into which the blade 31 enters from both sides. And the position of the clamping member relative to the scraper rubber is fixed.

[0082] Note that the embodiment of applying the scraper rubber to the regeneration device is not particularly limited. Figure 8 As shown in FIG. 2A , the blade rubber in a state where the blade holder is removed may be applied to the regenerating device, or the blade rubber in a state where the blade holder is included may be applied to the regenerating device.

[0083] The blade rubber regenerating device 20 includes a blade portion 31 for cutting off the tip of the lip portion 3 in the longitudinal direction of the blade rubber 100. For example, Figure 6 , Figure 7 A and Figure 7 In FIG. 1B , the blade rubber regeneration device 20 includes a cutting unit 30 and may have a blade 31 ( Figure 6 not shown).

[0084] The cutting unit 30 can move along the longitudinal direction of the blade rubber 100 and the clamping member 21. Figure 6 In the embodiment, the cutting unit 30 can move along the guide track 17. Figure 6In the embodiment, the cutting unit 30 can be moved manually by means of a handle 32, but may not be manually driven but may be driven by an electric cylinder, a motor or the like.

[0085] Note that in order to facilitate the movement of the cutting unit 30 , the cutting unit 30 and the clamping member 21 may be non-contact.

[0086] Figure 7 A and Figure 7 B is a bird's-eye view of the cutting unit 30 in the blade rubber regenerating device 20 as viewed from the upper part of the device. Figure 7 A is an enlarged view of the vicinity of the cutting unit 30, Figure 7 B is a diagram of the entire blade rubber in the longitudinal direction including the gripping member 21. The cutting unit 30 including the blade portion 31 moves along the longitudinal direction of the blade rubber 100 in the direction of the arrow from the end A to the end B in the figure.

[0087] And, the blade 31 enters the lip 3 from the side portion of the end of the lip 3 at the end A (the end A is one end in the longitudinal direction of the scraper rubber 100), moves relatively toward the end B which is the other end in the longitudinal direction, and a part of the end of the lip 3 is cut off. By performing the cutting as described above, the worn / deteriorated part is removed, and the regenerated scraper rubber can be obtained.

[0088] The illustrated regeneration device 20 is an embodiment in which the blade 31 (cutting unit 30) moves, but it is only necessary that the blade 31 can be relatively moved from the end A to the end B. That is, it may be an embodiment in which the cutting unit 30 including the blade 31 is fixed, and the clamping member 21 that fixes the scraper rubber 100 moves. For example, the blade 31 preferably moves so as to cut the first edge 8, the second edge 9, and the end surface 7. That is, at least a part of the contact portion to be removed preferably includes the end surface and the end side edge of the lip 3. Preferably, the blade 31 cuts the lip 3 so that a surface parallel to the end surface to be cut appears.

[0089] In addition, if Figure 7 A and Figure 7 B, the regeneration device 20 includes a force applying member 41, which contacts the side of the tip of the lip 3 at the end B of the lip 3 and applies force to the lip in the direction of the end A. The force applying member 41 is, for example, a plate-like member, and is inserted into the gap of the clamping member 21. The force applying member 41 presses the end B of the lip from the end of the clamping member 21 in the direction of the end A through an elastic member 42 such as a spring.

[0090] In addition, if Figure 6 , Figure 8 A and Figure 8As shown in FIG. 2B , the regenerating device 20 includes a pressing member 51 that presses the tip of the lip 3 toward the base 1 of the blade rubber. Before the blade 31 moves relatively from the end A to the end B, the pressing member 51 presses the tip of the lip 3 toward the base 1. As a result, the blade 31 is prevented from being deviated toward the tip side of the lip 3 in the advancing direction due to the movement of the blade 31.

[0091] For example, Figure 6 and Figure 8 As shown in FIG. 2A , the pressing member 51 is provided in the cutting unit 30 and can move according to the movement of the blade 31 .

[0092] The present inventors consider the following reasons: With the blade rubber regenerating device 20 described above, deformation of the cut surface of the lip 3 is suppressed, and a regenerated blade rubber with higher accuracy can be obtained as follows.

[0093] The suppression of deformation at the start of cutting will be explained. The regenerating device 20 includes a clamping member 21 that clamps the lip 3 from both sides in the short side direction of the lip 3. And the clamping member 21 is arranged at a position capable of clamping at least the portion where the blade 31 enters the lip 3, and the position of the clamping member relative to the scraper rubber is fixed. That is, unlike the cutter in Patent Document 1, in the regenerating device 20, the clamping member 21 does not move relative to the scraper rubber even by the movement of the blade 31, but clamps the lip 3.

[0094] As described above, it is considered that, by clamping the portion where the blade 31 of the lip 3 enters, the elastic deformation of the lip 3 due to the pressure when the blade 31 enters the side of the lip 3 is suppressed. Therefore, in the lip, the end portion on the side of the entry portion of the blade 31 after cutting can be suppressed from becoming an R surface.

[0095] For example, if there is no clamping member 21, as Figure 2 and Fig. 9 As shown in A, in some cases, the end portion of the entry side of the blade 31 may become an R surface due to the elastic deformation of the lip edge portion 3, as shown by the dotted line. In addition, if the thickness of the cut (cutting margin) is particularly small, in some cases, the action of the blade 31 entering the lip 3 becomes difficult due to the elastic deformation of the lip 3 caused by the pressure when the blade 31 enters the side surface of the lip 3. On the other hand, if there is a clamping member 21 that clamps the lip 3 from both sides, as shown in Fig. 9 As shown by the dotted line in B, deformation of the cut surface can be suppressed. This is considered to be so that excessive elastic deformation of the lip 3 is suppressed when the blade enters the lip 3, and pressure is uniformly applied to the lip 3.

[0096] Note that, in order to suppress deformation of the entry portion of the blade 31, it is only necessary for the clamping member 21 to clamp at least the portion where the blade 31 enters. Figure 7 A and Figure 7 As shown in B, the clamping member 21 can clamp the lip 3 over the entire area in the longitudinal direction of the lip 3.

[0097] Subsequently, the suppression of elastic deformation due to the bouncing of the cutting blade during the cutting process will be explained. The regeneration device 20 includes a pressing member 51 that presses the end of the lip 3 toward the base 1 before the blade 31 moves relatively from the end A to the end B. It is considered that with the help of the pressing member 51 as described above, the lip 3 can be pressed to a position just before being cut by the blade 31, so that the elastic deformation of the lip 3 caused by the bouncing of the cutting blade by the blade 31 can be suppressed. That is, with the help of the pressing member 51, the deviation to the end side of the scraper rubber in the advancing direction of the blade 31 caused by the movement of the blade 31 can be prevented. As a result, the advancing direction of the cutting performed by the blade 31 is almost unchanged, and the deformation of the cutting surface can be suppressed.

[0098] For example, if there is no pressing member 51, the advancing direction of the cutting will be changed due to the elastic deformation of the lip 3, such as Figure 3 and Fig.10 A, and the cut surface may be curved as shown by the dotted line in some cases. Fig.10 In FIG. 1B , before the blade 31, the pressure member 51 moves in the direction of the arrow together with the blade 31 while pressing the lip 3 in the direction of the base 1. That is, the regeneration device 20 performs cutting while suppressing the elastic deformation caused by the movement of the blade 31 by the pressure member. As a result, it is considered that the lip 3 becomes less likely to be elastically deformed, and the deformation of the cutting surface can be suppressed, as shown by the dotted line. For example, by keeping the interval between the end of the blade 31 and the pressure member 51 constant, the pressure member 51 and the blade 31 are moved.

[0099] Furthermore, the suppression of deformation at the end of the rear half of the cut will be explained. The regeneration device 20 includes a force applying member 41 that contacts the side of the end B of the lip 3 and applies force to the lip in the direction of the end A. With the aid of the force applying member 41 as described above, expansion caused by elastic deformation of the tip side of the lip at the end B can be suppressed, so that deformation of the cut surface can be suppressed.

[0100] For example, in the absence of the force applying member 41, Figure 4 and Fig.11 As shown in A, the elastic deformation of the tip end side of the end of the lip becomes larger, and the cut surface is curved as shown by the dotted line. On the other hand, if there is Fig.11The urging member 41 shown in B can suppress elastic deformation of the lip end or expansion particularly on the tip side opposite to the base 1, and therefore, it is considered that deformation of the cut surface can be suppressed as shown by the dotted line.

[0101] Note that even at the rear end of the cutting portion as described above, the pressing member 51 is considered to exert an effect on the elastic deformation of the lip 3 caused by the springing of the cutting blade. However, it is considered insufficient to suppress the elastic deformation in the cutting direction (longitudinal direction of the blade rubber) only by the pressing member 51. Therefore, in order to sufficiently suppress the deformation of the rear end of the cutting portion, the pressing member 51 and the force applying member 41 are important.

[0102] As described above, by using a specific clamping member, a pressing member, and a urging member, the elastic deformation of the lip portion during the process from the blade entering the lip portion to the completion of cutting can be suppressed, and it is considered that the deformation of the cut surface of the lip portion can be suppressed. Figure 5 The cut surface shown in is bent into an S shape, and the blade rubber can be regenerated with higher accuracy.

[0103] In addition, as a cutting method, freeze cutting that eliminates or reduces the elasticity of the lip, laser cutting or water jet cutting for cutting before elastic deformation occurs by greatly increasing the cutting power can be considered. However, according to the above-mentioned regeneration device 20, compared with the above-mentioned cutting method, the device cost remains low, and high mass productivity and high-precision regeneration can be achieved.

[0104] Hereinafter, each structure of the blade rubber regenerating device 20 will be described.

[0105] The regeneration device 20 includes a blade portion 31. The blade for the blade portion 31 only needs to cut the lip portion by relative movement. The angle (blade angle θA) formed by the blade relative to the short side direction of the lip portion 3 of the scraper is not particularly limited, and the blade portion 31 only needs to be provided in the regeneration device 20 so that the angle is preferably 20° to 70°, more preferably 30° to 60°, or further preferably 40° to 50°. Figure 7 A is an example in which the angle θA becomes 45°.

[0106] In the longitudinal cross-sectional view of the scraper rubber of the regeneration device 20, assuming that the blade edge is guided to the base 1 side as +, the angle θB (not shown) formed by the longitudinal direction of the lip 3 (for example, the horizontal surface of the device) and the direction perpendicular to the blade length direction of the blade and parallel to the blade body is preferably 0 to 10°, more preferably 2° to 8°, or further preferably 3° to 7°. When the angle θB formed is within the above range, it means that the blade is slightly inclined to the base 1 side of the scraper rubber. As a result, the cutter blade can be easily escaped to the side opposite to the advancing direction of the blade.

[0107] The edge can be double-edged or single-edged. Figure 2 In the regeneration device 20 shown, etc., a double-edged blade 31 is used.

[0108] The blade thickness is not particularly limited, but is preferably 0.05 mm to 0.50 mm or more preferably 0.10 mm to 0.30 mm.

[0109] The tip angle (edge ​​angle) of the blade is not particularly limited, and is preferably 15° to 55°, more preferably 25° to 50°, or further preferably 35° to 45°. Within the above range, the lip can be easily cut off appropriately. The regeneration device 20 shown is an example of 45°.

[0110] The blade 31 only needs to be fixed to the regeneration device 20 (cutting unit 30) with such a force that the angle of the blade does not change during cutting. For example, it can be fastened by bolts or the like. The blade 31 can be fixed to Figure 7 A side. For example, by placing the blade 31 Figure 7 On the left and right cutting units 30 in A, when viewing the regenerating device 20 from the lip end side (eg, the upper side of the device), the blades 31 can be fixed to both sides across the lip. As a result, the cutting accuracy is further improved.

[0111] The feed speed of the blade in the regeneration device 20 (i.e., the speed of the above-mentioned relative movement) is not particularly limited as long as it is within the following range: the lip 3 can be properly cut off and is preferably 500mm / s to 5000mm / s, more preferably 800mm / s to 2000mm / s, or further preferably 900mm / s to 1500mm / s.

[0112] The slice width of the lip 3 cut by the blade 31 is not particularly limited, or it conforms to the size of the lip of the scraper rubber to be used. The slice width (the length of the lip in the short side direction of the scraper rubber in the portion to be cut (the length between the first side 5 and the second side 6)) is preferably 0.1mm to 5.0mm, 0.2mm to 2.0mm, 0.3mm to 1.0mm, etc. The material of the blade 31 is not particularly limited, but a known material can be appropriately used according to the scraper rubber to be cut. For example, stainless steel, iron, etc. can be used.

[0113] The regeneration device 20 includes a clamping member 21 that clamps at least a portion of the lip 3 from both sides of the lip 3. The clamping member 21 clamps and fixes the lip 3, and suppresses elastic deformation caused by the entry of the blade. The clamping member 21 only needs to be arranged at a position that can clamp the portion of the lip where the blade 31 enters. The portion where the blade enters refers to a portion where the elastic deformation of the lip due to the entry of the blade can be suppressed by clamping near the contact point between the blade and the lip. For example, when the two sides of the lip are not clamped, it is a portion near the position where the blade enters and is elastically deformed due to the entry of the blade.

[0114] The clamping member 21 can clamp the entire lip. Figure 7 A and Figure 7 B, the clamping member 21 can clamp and fix the entire area of ​​the lip in the longitudinal direction from both sides by a member sufficiently longer than the longitudinal length of the blade rubber 100. In addition, for example, the clamping member 21 clamps the base 1 side instead of the position where the blade 31 enters.

[0115] The material of the clamping member 21 is not particularly limited, and known materials such as steel including pre-hardened steel, stainless steel, aluminum, etc. can be used.

[0116] The pressure when the lip 3 is clamped and fixed by the clamping member 21 is not particularly limited, but can be appropriately changed according to the material of the blade rubber. The fixing can be performed with a force to the extent that the lip 3 is fixed and the elastic deformation caused by the entry of the blade 31 can be suppressed. In addition, the fixing can be performed with such a force that the lip is not deformed unnecessarily by being clamped. The fixing method is not particularly limited, and a known method such as fastening with a bolt or the like can be adopted.

[0117] For example, as the tightening force of the bolt when the lip portion is clamped by tightening the clamping member 21 with the bolt, 5.0 N / m to 50.0 N / m, 10.0 N / m to 30.0 N / m, or 12.0 N / m to 20.0 N / m can be preferably cited. For example, the clamping member 21 preferably clamps a position corresponding to the portion into which the blade enters with the aforementioned tightening force.

[0118] Fig.12 By further expanding Figure 8 B is a diagram obtained from the periphery of the end of the lip 3, Figure 5 B is a cross-sectional view of the blade rubber short side of the cutting unit 30 and the clamping member 21. It is assumed that the portion of the lip 3 clamped by the clamping member 21 is the clamping portion, and the length of the portion of the end of the lip 3 protruding from the clamping portion to the outside of the clamping member 21 is the protruding length A of the lip.

[0119] From the viewpoint of being able to more easily suppress elastic deformation of the lip portion 3 , A is preferably 0.10 mm to 1.00 mm, more preferably 0.20 mm to 0.50 mm, and further preferably 0.30 mm to 0.40 mm.

[0120] In addition, if Fig.12 As shown, the length (shortest distance) from the clamped portion of the lip portion clamped by the clamping member 21 to the tip of the blade is assumed to be a length B. From the viewpoint of being able to more easily suppress the elastic deformation of the lip portion 3, B is preferably 0.200 mm or less, more preferably 0.150 mm or less, and further preferably 0.130 mm or less. The smaller the lower limit, the better, but in order to prevent interference between the blade and the clamped portion, the length is desired to exceed 0.000 mm.

[0121] B can be exemplified as preferably exceeding 0.000 mm and being 0.200 mm or less, exceeding 0.000 mm and being 0.150 mm or less, exceeding 0.000 mm and being 0.130 mm or less.

[0122] In addition, from the viewpoint of being able to more easily suppress elastic deformation of the lip portion 3 , the value of B / A is preferably 0.10 to 0.55, more preferably 0.20 to 0.45, or further preferably 0.30 to 0.40.

[0123] In addition, Fig.12 The cutting thickness of the end of the lip 3 corresponding to AB in the scraper rubber (the length in the base-lip end direction) can be changed as appropriate according to the purpose of regeneration, the length of the lip before regeneration, and the degree of deterioration of the lip, and there is no particular limitation. The cutting thickness is preferably 0.05mm to 1.00mm or more preferably 0.10mm to 0.50mm.

[0124] The pressing member 51 is a member that presses the end of the lip 3 and suppresses elastic deformation caused by the movement of the blade. The regeneration device 20 includes a pressing member 51 that presses the end of the lip 3 toward the base 1 before the relative movement of the blade 31 from the end A to the end B. The pressing member 51 is not particularly limited as long as it can pressurize the lip before the relative movement of the blade 31. The pressing force can be such a degree that the elastic deformation of the lip 3 caused by the bounce of the cutting blade can be suppressed.

[0125] For example, an embodiment can be exemplified in which a member having a certain hardness contacts the tip of the lip 3 and is disposed at a facing position. That is, the pressing member 51 preferably moves in contact with the tip of the lip 3 and is preferably disposed at a position facing the tip of the lip 3. As a result, the pressing force can be appropriately changed according to the protruding length A of the lip 3. The pressing member 51 may or may not apply a force in the direction of the base 1 relative to the lip 3 by an elastic member such as a spring.

[0126] The pressing member 51 may or may not be in contact with the clamping member 21 , but preferably is not in contact.

[0127] When the blade moves in the longitudinal direction of the blade rubber, the cutting blade of the lip is fed into the space above and behind the tip of the blade as cutting proceeds. The pressurizing member 51 preferably weakens or releases the pressurization above and behind the tip of the blade 31 during the relative movement of the blade 31 so that the cutting blade of the lip gradually fills the space, which does not hinder the advancement of the blade. As the degree of weakening the pressurization, a method of weakening the force to such an extent that the advancement of the blade 31 is not hindered can be exemplified.

[0128] From the viewpoint of regenerating the blade rubber with higher accuracy, it is preferable that the pressing member 51 releases the pressing so that the cut piece can be easily fed to the rear of the blade.

[0129] For example, Figure 6 As shown, the pressurizing member 51 is preferably a disc-shaped member. The pressurizing member 51 may be fixed to the cutting unit 30, or may be supported by an axis, but from the viewpoint of facilitating pressurization with a constant force, it is preferably supported by an axis. As an embodiment of the pressurizing member 51 fixed to the cutting unit 30, a disc-shaped member or a member having a convex shape of R in the direction of the lip 3 can be exemplified. The method of axis support is also not particularly limited, and a known method such as using a bearing or the like can be adopted.

[0130] Regarding the pressure member 51, from the viewpoint of facilitating the reduction of pressure or release of pressure above and behind the tip of the blade 31, the pressure member 51 is preferably a member that moves in unison (synchronously) with the movement of the blade 31 by being provided in the cutting unit 30 together with the blade 31, etc. Figure 6 Preferably, the movement is performed by keeping the distance between the tip of the blade 31 and the portion to be pressed by the pressing member 51 constant.

[0131] In the illustrated embodiment, the pressing member 51 is a disc-shaped roller member, which is supported by the cutting unit 30 axis and rotates in contact with the end of the lip 3 as the cutting unit 30 moves relative to each other. Since the pressing member 51 rotates in contact with the lip 3, it is easier to keep the position for pressing or the force for pressing constant, which is preferred. In addition, the pressing force can be controlled by the hardness of the pressing member 51 or the protruding length A of the lip 3.

[0132] like Fig.10 As shown in FIG. 1B , in the longitudinal direction of the end of the lip 3, it is assumed that the distance between the position corresponding to the edge of the blade 31 and the contact point between the pressing member 51 and the lip 3 is X. X is preferably 1 mm to 30 mm, more preferably 5 mm to 20 mm, and further preferably 10 mm to 18 mm. That is, the pressing member 51 preferably applies pressure only by the distance X mentioned above before the blade 31 moves. Within the above range, the elastic deformation of the lip caused by the springing of the cutting blade can be more easily suppressed.

[0133] In addition, when the pressing member 51 is a disc-shaped member, as shown in FIG. Fig.10 As shown in FIG. 1B , it is assumed that the distance between the center of the disk shape and the horizontal surface of the lip 3 is Y. Y is preferably 5.0 mm to 100.0 mm, more preferably 10.0 mm to 70.0 mm, or further preferably 20.0 mm to 50.0 mm.

[0134] When X and Y are equal to or less than the above upper limit, the bouncing of the cutting blade can be more easily prevented. When X and Y are equal to or greater than the above lower limit, the cutting resistance can be advantageously maintained.

[0135] The value of X / Y is preferably from 0.40 to 0.80, more preferably from 0.50 to 0.70, or further preferably from 0.55 to 0.65.

[0136] For example, the lip portion may be pressurized so that the value of the radius-Y of the disk-shaped member is preferably 0.01 mm to 0.2 mm, more preferably 0.05 mm to 0.15 mm. The value of the radius-Y of the disk-shaped member indicates the degree of deformation of the pressurizing member due to pressurization.

[0137] The width of the pressing member 51 (the length in the short-side direction of the lip 3) only needs to be such that the lip 3 can be pressed, and is not particularly limited. It is preferably 1 mm to 100 mm, 2 mm to 50 mm, or 5 mm to 20 mm.

[0138] The hardness of the pressurizing member 51 only needs to be able to pressurize the lip portion 3, and is not particularly limited. The Fahrenheit hardness of the pressurizing member 51 is preferably 70 to 100 degrees, more preferably 75 to 80 degrees. Within the above range, the pressurizing member can be appropriately deformed, the bounce suppression effect is further improved, and an excessive increase in cutting resistance can also be suppressed.

[0139] The Fahrenheit hardness can be obtained by performing measurement using a Fahrenheit microhardness tester (manufactured by Wallace Instruments) as a measuring instrument in accordance with Japanese Industrial Standard (JIS) K6253-2:2012.

[0140] The material of the pressurizing member 51 is not particularly limited, and a known material can be used. For example, rubber materials such as urethane rubber (ester polyurethane, ether polyurethane, etc.), silicone rubber, fluororubber, natural rubber, etc.; metals such as aluminum, stainless steel, etc. can be exemplified.

[0141] From the viewpoint of satisfying the above-mentioned Fahrenheit hardness, a rubber material such as ester-based polyurethane is preferred.

[0142] The regeneration device 20 includes a force applying member 41 that contacts the side of the end B of the lip 3 and applies force to the lip in the direction of the end A. The force applying member 41 only needs to apply force to the end B to the extent that the elastic deformation in the longitudinal direction of the lip 3 (especially the elastic deformation of the end side of the lip) can be suppressed. For example, it can have a shape that can apply force to the clamping portion clamped by the clamping member 21 and apply force from the clamping portion to the end side of the lip 3 ( Fig.11 B), or may have a shape capable of applying force to the entire surface of the end B of the lip. The urging member 41 preferably has a shape capable of applying force to the clamping portion and applying force from the clamping portion to the tip end side of the lip 3.

[0143] Fig.13 4 is a cross-sectional view of the lip 3 in the longitudinal direction thereof and at a position where the lip 3 is clamped between the clamping members 21. The force applying member 41 is clamped between the clamping members 21 that clamp the lip 3 and applies force to the end B in the direction of the end A (the same applies to Fig.11 B) In addition, the urging member 41 itself may be an elastic member. Preferably, the urging member 41 is not fixed to the clamping member 21 , that is, the urging member 41 is in a state of being loosely engaged with the clamping member 21 .

[0144] For example, Fig.14 As shown in A, the force applying member 41 is inserted between the clamping members 21 through the hole provided in the holding member 15. Fig.14As shown in FIG. 2B , a spring is inserted as an elastic member 42 so that the urging member 41 can urge the end B, and the spring is pushed in by the fixed cover 43 , so that the end B is urged by the urging member 41 .

[0145] The shape of the urging member 41 is not particularly limited, but may be, for example, Fig.13 The plate-shaped member shown. In the case of a plate shape, it can be easily applied between the clamping members 21. As the plate-shaped member, for example, a shim plate or the like can be used according to the size of the interval of the clamping members 21. The shim plate is not particularly limited, but a known metal such as iron, stainless steel, copper, etc. can be used. For example, a cold-rolled steel plate can be exemplified.

[0146] The thickness of the shim plate can be appropriately changed in consideration of the thickness of the lip 3 and the interval of the clamping member 21. For example, 0.1 mm to 2.0 mm, 0.2 mm to 1.0 mm can be exemplified. The length and height of the shim plate are also not particularly limited, and those lengths and heights according to the size of the lip 3 and the size of the device can be used.

[0147] The urging member 41 only needs to be able to urge the end portion B to such an extent that elastic deformation in the longitudinal direction of the lip portion 3 can be suppressed. For example, when a spring is used as the urging member 41 itself or as an elastic member for urging the urging member 41, a spring having an allowable load in the range of preferably 10N to 100N or more preferably 20N to 60N can be used. In addition, the spring constant is preferably 1.0N / mm to 10.0N / mm, or more preferably 2.0N / mm to 5.0N / mm.

[0148] The scraper blade or scraper rubber regenerated by the regeneration device is not particularly limited, but a known scraper blade or scraper rubber can be used. For example, natural rubber, isoprene rubber, chloroprene rubber, EPDM rubber, nitrile rubber, silicone rubber, fluororubber, chlorosulfonated polyethylene rubber, butyl rubber, styrene-butadiene rubber, butadiene rubber, ethylene acrylate rubber, polyurethane, EVA resin, etc. can be exemplified.

[0149] The blade rubber may be surface-treated by a known method such as water-repellent coating, graphite coating, or the like.

[0150] The Fahrenheit hardness of the blade rubber is not particularly limited, but is preferably 45 to 85 degrees or more preferably 70 to 85 degrees. Within the above range, elastic deformation of the lip portion can be more easily suppressed.

[0151] The length of the blade rubber in the longitudinal direction, the thickness of the lip portion, and the like are not particularly limited, but any length within a known range can be used.

[0152] Example

[0153] Hereinafter, the present invention will be specifically explained by using examples. Note that the present invention is not limited to the following examples. In the following recipes, unless otherwise specified, the parts meet the quality standards.

[0154] <Scraper Rubber>

[0155] The following commercially available blade rubber (model: SW1G, manufactured by Nippon Wiper Blade Co., Ltd.) was prepared. Note that the blade rubber had a length of 450 mm in the longitudinal direction, was made of natural rubber, and had a graphite coating on its end side. In addition, the Fahrenheit hardness was 56 degrees.

[0156] [Example 1]

[0157] <Scraper rubber recycling device>

[0158] As a scraper rubber regenerating device according to this embodiment, a scraper rubber regenerating device according to at least one aspect of the present disclosure is prepared, which is configured to regenerate a scraper rubber by using Figure 6 , Figure 7 , Figure 8 , Fig.12 , Fig.13 and Fig.14 More specifically, the following blade rubber regenerating device was prepared. The length between the holding members 15 was set to 1000 mm.

[0159] (Blade 31)

[0160] By using the following blades, it is fixed to the cutting unit 30 in such a manner as to have the following angles A and B.

[0161] Blade type: High-speed steel (SKH material) (product name and material), double edge, end angle (edge ​​angle) 45 degrees, three-time polishing (DLC coated product), blade thickness: 0.25mm

[0162] Blade angle θA: 45°

[0163] Angle of the blade relative to the horizontal surface of the fixture (forming angle θB): 5°

[0164] Blade pressure: The blade is clamped in Figure 8 In the cutting unit 30 shown in B, both sides of the blade are fastened by bolts.

[0165] (Clamping member 21)

[0166] The clamping member is as follows, and the blade rubber is fixed according to the blade portion 31 in a manner having the following sliding width, protruding length A, and length B.

[0167] Material of the clamping member 21: Free-cutting pre-hardened steel (article number: NAK55)

[0168] -Pressure: 14.7N / m (clamped by tightening with M3 bolts using this tightening force)

[0169] - Slice width: 0.7mm

[0170] -Protrusion length A: 0.35mm

[0171] - Length B (length from the gripping part to the tip of the blade): 0.125 mm

[0172] (Pressure member 51)

[0173] As the pressing member 51, a standard polyurethane sheet (article number: UTM, manufactured by MISUMI Instruments Co., Ltd.) made of ester polyurethane having a hardness of 80 degrees Fahrenheit and processed into a disc shape with a diameter of 57.0 mm and a width of 10 mm was used. Fig.10 The pressure member 51 is fixed to the cutting unit 30 at a position where the distance X is 17 mm and the distance Y is 28.4 mm as shown in B. In addition, the pressure member 51 is supported by a bearing cam follower (article number: CFUA3-10, manufactured by MISUMI Instruments) shaft in a manner that allows it to rotate relative to the cutting unit 30. The pressure member 51 is in contact with the lip (radius of the disk - value of Y = 0.1 mm) and is fixed so that the pressure member 51 can rotate by the movement of the cutting unit 30. By bringing them into contact in this way, the end of the lip protruding from the clamping member 21 by the above-mentioned protrusion length A is pressed by the pressure member 51. In addition, by means of the above-mentioned structure, the pressure member 51 is configured to be able to press the lip before the blade moves the distance X.

[0174] (Force applying member 41)

[0175] As the force applying member 41, Figure 7 B and Fig.14 As shown in FIG. 2B, a shim made of a cold-rolled steel plate having a length of 50 mm, a height of 10 mm, and a thickness of 0.6 mm passes through the clamping member 21, and the end B of the blade rubber is urged toward the end A by using a spring 42 and a cover 43. As the spring 42, a spring having a spring constant of 2.9 N / mm and an allowable load of 30 N to 50 N (model: WL18-35, manufactured by MISUMI Instruments Co., Ltd.) is used.

[0176] (Cutting)

[0177] As described above, in the regeneration device 20 to which the scraper rubber is fixed, the cutting unit 30 is moved by using a robo cylinder (article number: RCS3-CT8C, manufactured by IAI Corporation) so that the feed speed of the blade becomes 1000 mm / sec, the lip is cut from end A to end B, and the regenerated scraper rubber is obtained.

[0178] (Comparative Example 1)

[0179] In Example 1, the pressing force of the clamping member 21 was set to 0 N / m. In addition, no pressing member and no urging member were used. Except for this, a regenerated blade rubber was obtained similarly to Example 1.

[0180] (Comparative Example 2)

[0181] In Example 1, the pressing member and the urging member were not used. A regenerated blade rubber was obtained similarly to Example 1 except for the above.

[0182] (Comparative Example 3)

[0183] In Example 1, no urging member was used. A regenerated blade rubber was obtained similarly to Example 1 except for the above.

[0184] (Comparative Example 4)

[0185] In Example 1, the pressing force of the clamping member 21 was set to 0 N / m, the protruding length A was set to 2 mm, and the length B was set to 0.125 mm. Except for this, similarly to Example 1, a regenerated blade rubber was obtained.

[0186] (Evaluation 1)

[0187] The obtained regenerated blade rubber was evaluated by the following procedure.

[0188] The cutting unit 30 is removed from the regenerating device for cutting, and a state is set in which no object exists above the cutting surface in the vertical direction of the regenerated blade rubber. Then, an ultra-high-speed / high-precision laser dimension measuring instrument (article number: LS-9030, manufactured by Keyence Corporation, maximum measuring range: 30 mm) is placed on the surface of the flat plate 16 of the regenerating device so that the regenerated blade rubber is positioned between the laser light projecting part and the light receiving part of the high-speed / high-precision laser dimension measuring instrument.

[0189] At this time, the distance between the reference position for distance measurement of the high-speed / high-precision laser measuring instrument and the surface of the flat plate 16 is adjusted so that the entirety of the cut surface in the longitudinal direction is located below the reference position in the vertical direction. Then, the high-speed / high-precision laser measuring instrument is moved parallel to the longitudinal direction of the regenerated blade rubber, and the distance (height) from the cut surface at the end A of the regenerated blade rubber, at the midpoint between the end A and the end B, and at the end B to the reference position is measured.

[0190] Furthermore, assuming that the end A is 0 with respect to the blade rubber having a total length of 450 mm, the distance (cutting distance) that the blade advances toward the end B without being removed from the blade rubber as the regeneration object is set to P (mm).

[0191] Table 1 shows the evaluation results.

[0192] [Table 1]

[0193] Table 1

[0194]

[0195] ※1: The blade should not enter the side surface of the scraper rubber end A side and should not cut.

[0196] ※2: The blade is moved outward toward the end surface at a position 100 mm from end A, and the blade rubber cannot be cut from this position to end B.

[0197] (Evaluation 2)

[0198] The scraping performance of the regenerated blade rubbers prepared in Example 1 and Comparative Examples 3 to 4 was evaluated as follows. Note that, for Comparative Examples 1 and 2, since the regeneration of the blade rubber could not be completed, no evaluation was made.

[0199] <Evaluation method>

[0200] The scraping performance test of the regenerated scraper blade rubber was conducted in accordance with Japanese Industrial Standard (JIS) D5710:1998 Automobile Parts - Scraper Arms and Scraper Blades. A test device including a front windshield for an automobile ("Wish" (product name) (manufactured by Toyota Motor Corporation), a scraper arm, a scraper link, and a scraper motor was prepared.

[0201] - Windshield (Windshield for Wish manufactured by Toyota Motor Corporation; Model: AZE / ZNE10G, 14G, 11W, manufactured by AGC Corporation)

[0202] -Windshield wiper motor (Model: 85110-1A080; Toyota Motor Corporation genuine part)

[0203] - Wiper arm (Model: 85211-68010; Toyota Motor Corporation genuine part)

[0204] - Stabilized DC power supply (Model name: PSW-60L30; (manufactured by TEXIO TECHNOLOGY CORPORATION))

[0205] -Scraper handle shape: U hook type

[0206] -Pressure of scraper blade: 18N / m (*Pressure of scraper blade arm per 1 meter)

[0207] In a normal use state, the regenerated scraper rubber with the scraper bracket attached is attached to the scraper arm of the test device. At this time, the attachment is performed so that the end A side of the regenerated scraper rubber is located on the inner peripheral side of the windshield and the end B side is located on the outer peripheral side of the windshield.

[0208] After spraying water droplets on the surface of the windshield in a mist state, the wiper blade is reciprocated once, and the number of remaining lines that have not been scraped off is visually determined from a distance of 50 cm from the surface of the windshield. Note that this evaluation is performed in an environment with an ambient temperature of 25°C and a humidity of 50% RH. Therefore, the above determination is performed according to the above standard 1 second after the scraping is completed. Then, the three areas on the windshield (Sin, M, Sout, see Fig.15 ) The number of remaining lines of water droplets that have not been scratched off.

[0209] In addition, during the scraping test, the presence of obvious scraper blade vibration and abnormal sound was also observed. Note that the M area is the scraping area formed by the reciprocating motion of the scraper blade ( Fig.15 ) is the scraping range of the shaded part in the above scraping area; Sin is the scraping range outside the M area in the above scraping area, that is, the scraping range inside the M area; Sout is the scraping range outside the M area in the above scraping area, that is, the scraping range outside the M area. In addition, L represents the length of the scraper blade in the longitudinal direction.

[0210] In addition, as a control experiment, the blade rubber before regeneration was also subjected to the above-mentioned scratch test and evaluation. The results are shown in Table 2.

[0211] [Table 2]

[0212] Table 2

[0213]

[0214] "Hairline": A very thin unscratched mark with a width of 0.5 mm or less

[0215] "Heavier lines": Thin unscratched marks 1mm or less in width

[0216] "Wide line": a band-like unscratched portion with a width of about 1mm to 20mm. Including several hair lines and heavier lines and film-like unscratched portions.

[0217] Note that in the above standard, it is specified that the scratch performance in each zone should be the value shown in Table 3 or lower.

[0218] [Table 3]

[0219] Table 3

[0220]

[0221] Unit: root

[0222] In addition, in the above-mentioned scraping test, whether or not scraper blade chatter occurs is also evaluated. The evaluation results are shown in Table 4.

[0223] [Table 4]

[0224] Table 4

[0225]

[0226] The present disclosure relates to the following configurations or methods.

[0227] (Construction 1)

[0228] A scraper rubber regeneration device, wherein the scraper rubber is arranged on a scraper blade of a scraper device for a windshield of a vehicle, wherein

[0229] The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber.

[0230] The scraper rubber has a base, a lip, and a neck, the base being an attachment portion for attaching the scraper rubber to the scraper support, and the neck connecting the lip to the base in a swingable manner,

[0231] At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield.

[0232] The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber,

[0233] The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction.

[0234] The regeneration device comprises:

[0235] a clamping member that clamps the lip;

[0236] a biasing member that contacts the end B of the lip and biases the lip toward the end A; and

[0237] a pressing member that presses the distal end of the lip toward the base,

[0238] The clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber,

[0239] The clamping member is arranged at a position capable of clamping at least a portion of the lip into which the blade portion enters, and the position of the clamping member relative to the blade rubber is fixed, and

[0240] The pressing member presses the tip of the lip portion toward the base portion before the relative movement of the blade portion from the end portion A to the end portion B.

[0241] (Construction 2)

[0242] According to the blade rubber regenerating device of Configuration 1, the pressurizing member weakens or releases the pressurizing above and behind the tip of the blade portion during the relative movement of the blade portion.

[0243] (Construction 3)

[0244] The blade rubber regenerating device according to Configuration 1 or 2, wherein the clamping member is a member that clamps the entire area in the longitudinal direction of the lip portion from the both side portions.

[0245] (Construction 4)

[0246] The blade rubber regenerating device according to any one of configurations 1 to 3, wherein assuming that a length from a gripped portion of the lip gripped by the gripping member to a tip of a blade is a length B, the length B is equal to or less than 0.200 mm.

[0247] (Construction 5)

[0248] The blade rubber regenerating device according to any one of Configurations 1 to 4, wherein the pressing member is a disc-shaped roller member that rotates in contact with the distal end of the lip portion.

[0249] (Method 6)

[0250] A method for regenerating a scraper rubber provided in a scraper blade for a windshield wiper device in a vehicle,

[0251] The method comprises:

[0252] A step of fixing the blade rubber to the regenerating device according to any one of configurations 1 to 5; and

[0253] The step of cutting off a portion of a distal end of the lip portion of the blade rubber by the regenerating device.

[0254] (Method 7)

[0255] A method for producing a regenerated blade rubber, the method regenerating the blade rubber in a scraper blade for a windshield wiper device provided in a vehicle,

[0256] The method comprises:

[0257] A step of fixing the blade rubber to the regenerating device according to any one of configurations 1 to 5; and

[0258] The step of obtaining the regenerated blade rubber by cutting off a part of the distal end of the lip portion of the blade rubber by the regenerating device.

[0259] (Construction 8)

[0260] A scraper rubber regeneration device, the scraper rubber is used for a scraper blade, wherein

[0261] At least a portion of the tip of the scraper rubber forms a contact portion that contacts the scraped object.

[0262] The regenerating device includes a blade portion that cuts off the end of the blade rubber along the longitudinal direction of the blade rubber.

[0263] the regenerating device cuts off the end of the blade rubber by causing the blade portion to enter the blade rubber from a side portion of the end of the blade rubber at end A which is one end in the longitudinal direction of the blade rubber and relatively move toward end B which is the other end in the longitudinal direction, and

[0264] The regeneration device also includes:

[0265] a clamping member that clamps at least a portion of the scraper rubber from both sides of the scraper rubber in a cross-sectional view of the scraper rubber in a direction orthogonal to the longitudinal direction of the scraper rubber;

[0266] a biasing member that contacts the end B of the blade rubber and biases the blade rubber toward the end A; and

[0267] A pressing member at the tip of the blade rubber presses the tip before the blade moves and prevents the blade from being displaced toward the tip in the advancing direction of the blade due to the movement.

[0268] The present disclosure is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present disclosure. Therefore, the following claims are attached to clarify the scope of the disclosure.

[0269] This application claims priority based on Japanese Patent Application No. 2022-156513 filed on September 29, 2022 and Japanese Patent Application No. 2023-067140 filed on April 17, 2023, the entire contents of which are incorporated herein by reference.

[0270] Description of Reference Numerals

[0271] 3: lip; 20: blade rubber regeneration device; 21: clamping member; 30: cutting unit; 31: blade; 41: force member; 51: pressure member

Claims

1. A scraper rubber regeneration device, wherein the scraper rubber is provided on a scraper blade of a scraper device for a windshield of a vehicle, wherein The scraper blade comprises the scraper rubber and a scraper support supporting the scraper rubber. The scraper rubber has a base, a lip, and a neck, the base being an attachment portion for attaching the scraper rubber to the scraper support, and the neck connecting the lip to the base in a swingable manner, At least a portion of the distal end of the lip portion forms a contact portion that contacts the windshield. The regenerating device includes a blade portion for cutting off the distal end of the lip portion in the longitudinal direction of the blade rubber, The regeneration device cuts off a part of the end of the lip by causing the blade to enter the lip from the side of the end of the lip at end A and relatively move toward end B, wherein end A is one end in the longitudinal direction of the scraper rubber and end B is the other end in the longitudinal direction. The regeneration device comprises: a clamping member that clamps the lip; a force applying member, which contacts the end B of the lip and applies force to the lip in the direction of the end A; and a pressing member that presses the distal end of the lip toward the base, The clamping member clamps at least a portion of the lip portion from both sides of the lip portion in a cross-sectional view in a direction orthogonal to the longitudinal direction of the blade rubber, The clamping member is arranged at a position capable of clamping at least a portion of the lip into which the blade portion enters, and the position of the clamping member relative to the blade rubber is fixed, and The pressing member presses the tip of the lip portion toward the base portion before the relative movement of the blade portion from the end portion A to the end portion B.

2. The scraper rubber regeneration device according to claim 1, wherein The pressurizing member weakens or releases the pressurization above and behind the distal end of the blade during the relative movement of the blade.

3. The scraper rubber regeneration device according to claim 1 or 2, wherein The clamping member is a member that clamps the entire area of ​​the lip portion in the longitudinal direction from the two side portions.

4. The scraper rubber regeneration device according to any one of claims 1 to 3, wherein Assuming that the length from the clamped portion of the lip clamped by the clamping member to the tip of the blade is a length B, the length B is equal to or less than 0.200 mm.

5. The scraper rubber regeneration device according to any one of claims 1 to 4, wherein The pressing member is a disc-shaped roller member that rotates while in contact with the distal end of the lip.

6. A method for regenerating a scraper rubber provided in a scraper blade for a windshield scraper device in a vehicle, The method comprises: The step of fixing the scraper rubber to the regeneration device according to any one of claims 1 to 5; as well as The step of cutting off a portion of a distal end of the lip portion of the blade rubber by the regenerating device.

7. A method for producing a regenerated blade rubber, the method regenerating a blade rubber in a wiper blade for a windshield wiper device provided in a vehicle, The method comprises: The step of fixing the scraper rubber to the regeneration device according to any one of claims 1 to 5; as well as The step of obtaining the regenerated blade rubber by cutting off a part of the distal end of the lip portion of the blade rubber by the regenerating device.

8. A scraper rubber regeneration device, the scraper rubber is used for a scraper blade, wherein At least a portion of the tip of the scraper rubber forms a contact portion that contacts the scraped object. The regenerating device includes a blade portion that cuts off the end of the blade rubber along the longitudinal direction of the blade rubber. the regenerating device cuts off the end of the blade rubber by causing the blade portion to enter the blade rubber from a side portion of the end of the blade rubber at end A which is one end in the longitudinal direction of the blade rubber and relatively move toward end B which is the other end in the longitudinal direction, and The regeneration device also includes: a clamping member that clamps at least a portion of the scraper rubber from both sides of the scraper rubber in a cross-sectional view of the scraper rubber in a direction orthogonal to the longitudinal direction of the scraper rubber; a biasing member that contacts the end B of the blade rubber and biases the blade rubber toward the end A; and A pressing member at the tip of the blade rubber presses the tip before the blade moves and prevents the blade from being displaced toward the tip side in the advancing direction of the blade due to the movement.

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