Cutting tool for repairing elastomer glue

Abstract

The utility model relates to the technical field of elastomer glue repairing, and discloses a cutting tool for elastomer glue repairing, which comprises a handle and a blade, the blade is arranged below the handle, the bottom of the blade is provided with at least two continuous cutting grooves, the cutting grooves are arranged along the length direction of the handle, and at least one end of each cutting groove in the extension direction is provided with a cutting edge; the connecting line of any two adjacent cutting grooves is higher than the lowest point of any cutting groove, and the connecting line of any two adjacent cutting grooves is lower than the highest points of the cutting grooves in the two sides of the blade. The continuous cutting grooves can cut the elastomer to form at least two continuous near-V-shaped notches, the cutting area is large, the repaired elastomer is high in strength, heating is not needed in the cutting and repairing process, and the problem of toxic gas caused by heating of the elastomer is solved.

Description

Technical Field

[0001] This utility model relates to the field of elastomer adhesive repair technology, and more specifically, to a cutting tool for elastomer adhesive repair. Background Technology

[0002] In the rail transit industry, polyurethane adhesive is often used as a sealant for vehicle windows. After curing, it forms an elastomer. As the vehicle's operating years and mileage increase, aging problems such as cracks will appear on the surface of the adhesive, which needs to be repaired in time to prevent further aging.

[0003] When repairing adhesives, the aged adhesive layer needs to be removed, reapplied, and cured.

[0004] In conclusion, how to improve the overall adhesive strength of the repaired adhesive layer is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a cutting tool for repairing elastomers. The continuously set cutting grooves can cut at least two continuous near-V-shaped notches on the elastomer, with a large cutting area, high strength of the repaired elastomer, and no heating is required during cutting and repair, thus avoiding the problem of toxic gases caused by heating the elastomer.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cutting tool for repairing elastomeric adhesive includes a handle and a blade. The blade is mounted below the handle. The bottom of the blade has at least two continuous cutting grooves. The cutting grooves are arranged along the length direction of the handle. At least one end of the cutting groove in the extending direction has a cutting edge.

[0008] The line connecting any two adjacent grooves is higher than the lowest point of any groove, and the line connecting any two adjacent grooves is lower than the highest point of the grooves located on both sides of the blade.

[0009] Preferably, the cross-sectional shape of the blade is axisymmetric, and the groove is symmetrically arranged about the vertical symmetrical plane of the blade.

[0010] Preferably, the groove includes a V-shaped groove and a U-shaped groove, wherein the V-shaped groove has a broken line structure in the cross-section and the U-shaped groove has an arc structure in the cross-section.

[0011] Preferably, the cutting edge angle is 20°, and the cutting angle between the end face of the groove and the extension direction of the groove is 45°-50°.

[0012] Preferably, the cutting edge is provided at both ends of the cutting groove in the extending direction, and the cutting angle of the cutting edge at the front end of the cutting groove is greater than the cutting angle of the cutting edge at the rear end of the cutting groove.

[0013] Preferably, the top of the blade is provided with a mounting plate, the mounting plate is provided with threaded mounting holes for mounting fastening bolts, and the handle is detachably connected to the mounting plate via the fastening bolts.

[0014] Preferably, the mounting plate has a U-shaped structure, the horizontal plate of the mounting plate is provided with threaded mounting holes, the threaded mounting holes are evenly arranged along the extension direction of the handle, and the side plates at both ends of the horizontal plate are connected to the top ends of the blade.

[0015] Preferably, the side plate of the mounting plate is provided with mounting holes for mounting fasteners, and the top of the blade is provided with a connection hole for mounting the fasteners. The mounting plate and the blade are detachably connected by the fasteners.

[0016] Preferably, the mounting plate is provided with a vertically arranged positioning post, and the handle is provided with a through positioning hole. The height of the positioning post is the same as the depth of the positioning hole. When the fastening bolt is tightened, the positioning post is flush with the top surface of the handle.

[0017] The cutting tool for repairing elastomers provided by this utility model has continuously set grooves that can cut at least two continuous near-V-shaped notches on the elastomer. By increasing the cutting area of ​​the tool, the strength of the repaired elastomer is enhanced. At the same time, no heating is required when using this cutting tool to repair the elastomer, thus avoiding the problem of toxic gases caused by heating the elastomer. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of a specific embodiment of the cutting tool for repairing elastomer adhesive provided by this utility model;

[0020] Figure 2 for Figure 1 A structural diagram from another direction;

[0021] Figure 3 for Figure 1 A side view diagram;

[0022] Figure 4 for Figure 1 Front view diagram;

[0023] Figure 5 A schematic diagram of a specific embodiment two of the cutting tool for repairing elastomer adhesive provided by this utility model;

[0024] Figure 6 for Figure 5 A structural diagram from another direction;

[0025] Figure 7 for Figure 5 A side view diagram;

[0026] Figure 8 for Figure 5 Front view diagram.

[0027] Figures 1-8 middle:

[0028] 1-Mounting plate; 11-Threaded mounting hole; 2-Blade; 21-Groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The core of this invention is to provide a cutting tool for repairing elastomers. The continuously set grooves can cut at least two continuous near-V-shaped notches on the elastomer, resulting in a large cutting area, high strength of the repaired elastomer, and no heating is required during cutting and repair, thus avoiding the problem of toxic gases caused by heating the elastomer.

[0031] The cutting tool for repairing elastomers provided by this utility model includes a handle and a blade 2. The blade 2 is installed below the handle. The bottom of the blade 2 is provided with at least two continuous cutting grooves 21. The cutting grooves 21 are arranged along the length direction of the handle. At least one end of the cutting grooves 21 in the extending direction is provided with a cutting edge.

[0032] The line connecting any two adjacent grooves 21 is higher than the lowest point of any groove 21, and the line connecting any two adjacent grooves 21 is located at the highest point of the grooves 21 below the sides of the blade 2.

[0033] Please refer to Figure 1The groove 21 at the bottom of the blade 2 is used to remove the aged adhesive layer of the elastomer. The groove 21 can cut the elastomer and form an incision. Since the groove 21 at the bottom of the blade 2 is continuously set, at least two continuous near-V-shaped incisions can be formed in the elastomer.

[0034] The specific shape and size of the near-V-shaped cut are determined based on the shape and size of the groove 21 at the bottom of the blade 2. The shape and size of the groove 21 can be determined based on Taguchi test to determine the effect of the cut shape and size of the blade 2 on the strength of the repaired adhesive while controlling the cutting length and cutting depth.

[0035] Based on actual test data, the groove 21 is usually set as a V-shaped groove or a U-shaped groove. The V-shaped groove has a broken line structure in the cross-section, such as... Figure 4 As shown, the U-shaped groove has an arc-shaped structure in the cross-section, such as... Figure 8 As shown.

[0036] The cutting length of the groove 21 at the bottom of the blade 2 is determined according to the size of the elastomer to be cut, such as the window sealing strip, in actual production. That is, the cutting length is equal to or slightly greater than the width of the elastomer to be cut. The cutting depth of the groove 21 of the blade 2 is determined according to the thickness of the aged adhesive layer of the elastomer to be cut in actual production. Usually, the cutting depth is only set to be slightly greater than the thickness of the aged adhesive layer to avoid cutting too deep and affecting the overall strength of the elastomer after adhesive repair.

[0037] The shapes and sizes of the various cutting grooves 21 at the bottom of the blade 2 can be the same or different;

[0038] However, considering that the shapes of each groove 21 are different in actual cutting, the cutting resistance experienced by each groove 21 during cutting will be quite different, making the blade 2 prone to deviation during cutting. Therefore, the cross-sectional shape of the blade 2 in the cross section is usually set to be an axisymmetric figure, and the groove 21 at the bottom of the blade 2 is symmetrical about the vertical symmetrical surface of the blade 2, so that the blade 2 is an axisymmetric structure.

[0039] The number of grooves 21 at the bottom of the blade 2 can be determined based on factors such as the size of the elastomer to be cut in actual production and the cutting area of ​​a single groove 21, so as to balance the overall cutting area of ​​the blade 2 and the cutting resistance encountered during cutting, thereby achieving a larger overall cutting area with a smaller cutting resistance, so as to improve the overall strength of the elastomer after cutting and repair.

[0040] The blade 2 is mounted on the handle, which is used by the user to hold and control the cutting direction of the blade 2, thereby avoiding the user from directly holding the blade 2 for cutting, reducing the risk of the user being cut by the blade 2, and thus improving the safety of the cutting tool.

[0041] The blade 2 is usually made of alloy steel to ensure that the blade 2 has sufficient cutting strength. The material of the handle is not limited, as long as it can meet the connection strength requirements of the blade 2.

[0042] The structure, shape and size of the handle can be set with reference to existing elastomer repair cutting tools. In order to facilitate the user's grip, it is preferable to set the grip part of the handle away from the blade 2 in an ergonomic design, and the outer surface of the grip part is provided with anti-slip texture or rubber sleeve to prevent the handle from slipping out of the hand during the cutting process.

[0043] The blade 2 and the handle can be connected by common detachable connection methods such as bolt connection, pin connection, and snap connection, or they can be fixed by welding, bonding, etc.

[0044] The blade 2 and the handle are preferably designed to be detachably connected, which not only facilitates the matching of the blade 2 and the handle, allowing different users to choose the appropriate handle according to their own needs, ensuring user comfort, but also makes it easy to replace the blade 2 after it wears out, thereby avoiding the need to replace the entire cutting tool and reducing maintenance costs.

[0045] When using, position the cutting edge of the blade 2 directly opposite the elastomer to be cut, and make the lowest point of the groove 21 equal to or slightly lower than the aged adhesive layer of the elastomer. Then, by pushing or pulling the blade 2 up or down, use the cutting edge of the groove 21 to cut the elastomer, forming at least two continuous near-V-shaped cuts on the elastomer. Then, reapply adhesive to the cuts at room temperature and let them cure to complete the adhesive repair of the elastomer.

[0046] In this embodiment, the continuously arranged grooves 21 can cut at least two continuous near-V-shaped notches on the elastomer. By increasing the cutting area of ​​the tool 2, the strength of the repaired elastomer is enhanced. At the same time, the use of this cutting tool to repair the elastomer with adhesive does not require heating, thus avoiding the problem of toxic gases caused by heating the elastomer.

[0047] Preferably, the cutting groove 21 at the bottom of the blade 2 can be provided with cutting edges at both ends in the extending direction. Compared with a cutting edge on only one side that can only be pushed up or pulled down, the cutting edges on both sides can realize the upward and downward movement of the blade 2, making the cutting operation more convenient.

[0048] The opening angle and cutting angle of the groove 21 of the blade 2 are determined according to the actual production needs. Usually, the opening angle of the cutting edge of the groove 21 is set to 20°, which makes the cutting edge sharp and easy to cut. The cutting angle between the end face of the groove 21 and the extension direction of the groove 21 is 45°-50°.

[0049] Considering the differences between pushing up and pulling down during cutting, the groove 21 has cutting edges at both ends in the extension direction, and the cutting angle of the cutting edge at the front end of the groove 21 is greater than the cutting angle of the cutting edge at the rear end of the groove 21.

[0050] In a specific embodiment, the bottom of the blade 2 is provided with two continuous cutting grooves 21. The two cutting grooves 21 have a double V-shaped structure. The included angle between the two relatively far sides of the two cutting grooves 21 is 93°, and the included angle between the two relatively close sides of the two cutting grooves 21 is 93°.

[0051] The groove 21 has cutting edges at both ends in the extension direction, with the cutting angle of the front cutting edge being 50° and the cutting angle of the rear cutting edge being 45°.

[0052] Based on the above embodiments, in order to ensure cutting safety, the top of the blade 2 is provided with a mounting plate 1, the mounting plate 1 is provided with threaded mounting holes 11 for installing fastening bolts, and the handle is detachably connected to the mounting plate 1 through fastening bolts.

[0053] The blade 2 and the mounting plate 1 can be configured as an integral mechanism, or they can be detachably connected by means of snap-fit ​​structure, bolt connection, etc. For example, the blade 2 can be interference-fitted into the mounting groove of the mounting plate 1, or the blade 2 can be pressed between the mounting plates 1 on both sides and the mounting plates 1 on both sides can be connected by connecting bolts, connecting pins, etc.

[0054] In this embodiment, the blade 2 is detachably connected to the handle via the mounting plate 1, which avoids drilling holes directly in the blade 2, thereby avoiding stress concentration at the drilling point of the blade 2 and ensuring the structural strength of the blade 2.

[0055] Based on the above embodiments, in order to improve the installation stability of the blade 2, the mounting plate 1 can be set as a U-shaped structure. The horizontal plate of the mounting plate 1 is provided with threaded mounting holes 11. The threaded mounting holes 11 are evenly arranged along the extension direction of the handle. The side plates at both ends of the horizontal plate are connected to the top ends of the blade 2.

[0056] Please refer to Figure 2 The mounting plate 1 is located at one end of the blade 2. Compared to the mounting plate 1 being located at the center of the blade 2 along its length, the center of gravity of the cutting tool is relatively stronger, making it easier for the blade 2 to cut forward.

[0057] Furthermore, the front end of the side plate of the mounting plate 1 can be set to a wedge-shaped surface, and the rear end of the side plate of the mounting plate 1 can be set to a vertical surface, so that the center of gravity of the cutting tool is further forward.

[0058] Please refer to Figure 4 The two side plates of the mounting plate 1 are inclined inward at both ends of the horizontal plate. The inclination angle between the side plates of the mounting plate 1 and the horizontal plate is determined according to the angle between the top side of the cutting groove 21 of the blade 2 and the vertical plane in actual production.

[0059] The top of the horizontal plate is provided with at least one threaded mounting hole 11 for fastening bolts. The threaded mounting hole 11 is preferably located in the center of the horizontal plate. The mounting plate 1 is threadedly connected to the handle. The connection method is simple, easy to disassemble and assemble, and has high connection strength, installation stability and reliability.

[0060] The specific number and size of the threaded mounting holes 11 are determined based on the length of the mounting plate 1 and the design connection strength in actual production.

[0061] In this embodiment, the blade 2 is secured between the two side plates of the U-shaped mounting plate 1, which increases the connection strength between the blade 2 and the mounting plate 1, improves the installation stability of the blade 2, and thus ensures the safety of the cutting tool.

[0062] The mounting plate 1 and the blade 2 can be designed as an integral structure, which can simplify the structure of the cutting tool and avoid stress concentration at the connection between the blade 2 and the mounting plate 1, resulting in greater stability and safety.

[0063] Of course, the blade 2 can also be detachably connected to the mounting plate 1 to avoid replacing both the blade 2 and the mounting plate 1 at the same time when the blade 2 is damaged, thus reducing replacement costs.

[0064] For example, please refer to Figure 4 The side plate of the mounting plate 1 is provided with mounting holes for mounting fasteners, and the top of the blade 2 is provided with connecting holes for mounting fasteners. The mounting plate 1 and the blade 2 are detachably connected by fasteners; the fasteners can be specifically set as fastening bolts, connecting pins, etc.

[0065] Based on the above embodiments, the mounting plate 1 can be provided with a vertically arranged positioning post, and the handle can be provided with a through positioning hole. The height of the positioning post is the same as the depth of the positioning hole. When the fastening bolt is tightened, the positioning post is flush with the top surface of the handle. Therefore, the relative positional relationship between the positioning post and the handle can be used to determine whether the handle is installed in place.

[0066] The shape of the positioning pins is not limited, but they are mostly set as cylindrical positioning pins, which are regular in shape and easy to process. The number and distribution of the positioning pins are determined according to the size of the mounting plate 1 and the size and distribution of the threaded mounting holes 11 in actual production, so as to avoid the positioning pins affecting the tightening of the fastening bolts and to ensure that the fastening bolts have sufficient installation space.

[0067] In this embodiment, the positioning post facilitates quick alignment of the handle and the mounting plate. Furthermore, the relative positional relationship between the positioning post and the top surface of the handle determines whether the handle is properly installed, ensuring a stable and reliable connection between the handle and the positioning plate 1 and guaranteeing the safety of the cutting tool.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0069] The cutting tool for repairing elastomeric adhesives provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A cutting tool for repairing elastomer adhesives, characterized in that, Includes a handle and a blade (2), the blade (2) is mounted below the handle, the bottom of the blade (2) is provided with at least two continuous cutting grooves (21), the cutting grooves (21) are arranged along the length direction of the handle, and the cutting grooves (21) are provided with a cutting edge at at least one end in the extending direction; The connecting line of any two adjacent grooves (21) is higher than the lowest point of any groove (21), and the connecting line of any two adjacent grooves (21) is lower than the highest point of the grooves (21) located on both sides of the blade (2).

2. The cutting tool for repairing elastomer adhesive according to claim 1, characterized in that, The blade (2) has an axisymmetric cross-sectional shape, and the groove (21) is symmetrical about the vertical symmetrical surface of the blade (2).

3. The cutting tool for repairing elastomer adhesive according to claim 2, characterized in that, The groove (21) includes a V-shaped groove and a U-shaped groove. The V-shaped groove has a broken line structure in the cross-section, and the U-shaped groove has an arc structure in the cross-section.

4. The cutting tool for repairing elastomer adhesive according to claim 1, characterized in that, The cutting angle of the cutting edge is 20°, and the cutting angle between the end face of the cutting groove (21) and the extension direction of the cutting groove (21) is 45°-50°.

5. The cutting tool for repairing elastomeric adhesives according to claim 4, characterized in that, The cutting groove (21) has cutting edges at both ends in the extending direction, and the cutting angle of the cutting edge at the front end of the cutting groove (21) is greater than the cutting angle of the cutting edge at the rear end of the cutting groove (21).

6. The cutting tool for repairing elastomeric adhesives according to any one of claims 1-5, characterized in that, The blade (2) is provided with a mounting plate (1) at the top, and the mounting plate (1) is provided with a threaded mounting hole (11) for mounting a fastening bolt. The handle is detachably connected to the mounting plate (1) via the fastening bolt.

7. The cutting tool for repairing elastomeric adhesives according to claim 6, characterized in that, The mounting plate (1) has a U-shaped structure. The horizontal plate of the mounting plate (1) is provided with the threaded mounting holes (11). The threaded mounting holes (11) are evenly arranged along the extension direction of the handle. The side plates at both ends of the horizontal plate are connected to the top two ends of the blade (2).

8. The cutting tool for repairing elastomer adhesive according to claim 7, characterized in that, The side plate of the mounting plate (1) is provided with mounting holes for mounting fasteners, and the top of the blade (2) is provided with connection holes for mounting the fasteners. The mounting plate (1) and the blade (2) are detachably connected by the fasteners.

9. The cutting tool for repairing elastomeric adhesives according to claim 6, characterized in that, The mounting plate (1) is provided with a vertically arranged positioning post, and the handle is provided with a through positioning hole. The height of the positioning post is the same as the depth of the positioning hole. When the fastening bolt is tightened, the positioning post is flush with the top surface of the handle.

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