Cutting tool for repairing elastomer glue

Abstract

The invention 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] The invention relates to the technical field of elastomer glue repair, and more specifically to a cutting tool for elastomer glue repair. Background Art

[0002] In the rail transit industry, polyurethane adhesives are mostly used as sealants for vehicle windows, which form elastomers after curing. 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 avoid further deepening of the aging degree.

[0003] When repairing the adhesive, the aged adhesive layer needs to be cut off, re-applied and cured.

[0004] In summary, how to improve the overall adhesive strength of the repaired adhesive is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a cutting tool for repairing elastomer glue, in which the continuously arranged cutting grooves can cut at least two continuous nearly V-shaped notches on the elastomer, the cutting area is large, the strength of the repaired elastomer is high, and no heating is required during cutting and repairing, thus avoiding the problem of toxic gases caused by heating the elastomer.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A cutting tool for repairing elastomer glue, comprising a handle and a blade, wherein the blade is installed 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 the cutting grooves are provided with a cutting edge at at least one end in the extension direction;

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

[0009] Preferably, the cross-sectional shape of the blade in the cross section is an axisymmetric figure, and the cutting grooves are symmetrically arranged with respect to the vertical symmetry plane of the blade.

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

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

[0012] Preferably, the cutting edge is provided at both ends of the cutting groove in the extension 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, a mounting plate is provided on the top of the blade, the mounting plate is provided with a threaded mounting hole for installing a fastening bolt, and the handle is detachably connected to the mounting plate via the fastening bolt.

[0014] Preferably, the mounting plate is a U-shaped structure, the horizontal plate of the mounting plate is provided with the 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 two ends of the blade.

[0015] Preferably, the side plate of the mounting plate is provided with a mounting hole for installing a fastener, the top of the blade is provided with a connecting hole for installing the fastener, and the mounting plate and the blade are detachably connected via the fastener.

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

[0017] The cutting tool for repairing elastomer glue provided by the present invention can form at least two continuous nearly V-shaped notches on the elastomer by continuously arranged cutting grooves, thereby increasing the cutting area of ​​the tool and enhancing the strength of the repaired elastomer. At the same time, when using the cutting tool to repair the elastomer glue, there is no need to heat it, thus avoiding the problem of toxic gas caused by heating the elastomer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of a specific embodiment 1 of a cutting tool for repairing elastomer glue provided by the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure in another direction;

[0021] Figure 3 for Figure 1 A side view schematic diagram of

[0022] Figure 4 for Figure 1 A schematic diagram of the main view;

[0023] Figure 5 This is a schematic structural diagram of a specific embodiment 2 of the cutting tool for repairing elastomer glue provided by the present invention;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure in another direction;

[0025] Figure 7 for Figure 5 A side view schematic diagram of

[0026] Figure 8 for Figure 5 Schematic diagram of the main view.

[0027] Figure 1-Figure 8 middle:

[0028] 1-mounting plate; 11-threaded mounting hole; 2-blade; 21-cutting groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The core of the present invention is to provide a cutting tool for repairing elastomer glue. The continuously arranged cutting grooves can cut at least two continuous nearly V-shaped notches on the elastomer. The cutting area is large, and the strength of the repaired elastomer is high. No heating is required during cutting and repairing, thus avoiding the problem of toxic gases caused by heating the elastomer.

[0031] The cutting tool for repairing an elastomer provided by the present invention comprises a handle and a blade 2, wherein the blade 2 is installed below the handle, and at least two continuous cutting grooves 21 are provided at the bottom of the blade 2, and the cutting grooves 21 are arranged along the length direction of the handle, and at least one end of the cutting groove 21 in the extension direction is provided with a cutting edge;

[0032] The connection line between any two adjacent grooves 21 is higher than the lowest point of any groove 21 , and the connection line between any two adjacent grooves 21 is located below the highest points of the grooves 21 on both sides of the blade 2 .

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

[0034] The specific shape and size of the nearly V-shaped incision are determined according to the shape and size of the incision 21 at the bottom of the blade 2, and the shape and size of the incision 21 can be determined according to the Taguchi test test, so as to determine the effect of the incision shape and size of the blade 2 on the strength of the repaired adhesive under the condition of controlling the cutting length and cutting depth;

[0035] According to actual test data, the groove 21 is usually set to be a V-shaped groove or a U-shaped groove, and 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. Figure 8 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 in actual production, such as a window sealing strip, 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 rubber 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 rubber layer to avoid cutting too deep and affecting the overall strength of the elastomer after the glue repair.

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

[0038] However, considering that the shapes of the cutting grooves 21 are different in actual cutting, the cutting resistances encountered by the cutting grooves 21 during cutting will differ greatly, making it easy for the blade 2 to shift during the cutting process. Therefore, the cross-sectional shape of the blade 2 in the cross section is usually set to be an axisymmetric figure, and the cutting grooves 21 at the bottom of the blade 2 are symmetrically arranged about the vertical symmetry plane of the blade 2, so that the blade 2 has an axisymmetric structure.

[0039] The number of the 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 under 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 a handle, which is used for the user to hold to control the cutting direction of the blade 2, thereby preventing 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 cutting tools for elastomeric glue repair. In order to facilitate the user's grip, it is preferred to set the structure of the gripping part of the handle away from the blade 2 in accordance with ergonomic design, and the outer surface of the gripping part is provided with anti-slip texture or anti-slip cover such as rubber cover to prevent the handle from accidentally falling out of the hand during cutting.

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

[0044] Preferably, the blade 2 and the handle are detachably connected, which not only facilitates the matching of the blade 2 and the handle, allowing different users to choose a suitable handle according to their needs, ensuring the user's comfort, but also facilitates the replacement of the blade 2 after the blade 2 is worn, thereby avoiding the overall replacement of the cutting tool and reducing maintenance costs.

[0045] When in use, the cutting edge of the blade 2 is set directly opposite to the elastomer to be cut, and the lowest point of the cutting groove 21 is equal to or slightly lower than the aged rubber layer of the elastomer. Then, the blade 2 is pushed up or pulled down to cut the elastomer using the cutting edge of the cutting groove 21, and at least two continuous nearly V-shaped cuts are formed on the elastomer. Then, the cuts are re-glued and cured at room temperature to complete the glue repair of the elastomer.

[0046] In this embodiment, the continuously arranged cutting grooves 21 can cut at least two continuous nearly V-shaped notches on the elastomer, and the strength of the repaired elastomer is enhanced by increasing the cutting area of ​​the tool 2. At the same time, the use of the cutting tool to perform glue repair on the elastomer 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 of the extension direction. Compared with only setting a cutting edge on one side which can only push up or pull down, setting cutting edges on both sides can realize pushing up and pulling down of the blade 2, making the cutting operation more convenient.

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

[0049] Taking into account the difference between push-up and pull-down cutting, the cutting groove 21 is provided with cutting edges at both ends of the extension 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.

[0050] In a specific embodiment, two continuous grooves 21 are provided at the bottom of the blade 2, and the two grooves 21 are double V-shaped structures, and the angle between the two relatively far sides of the two grooves 21 is 93°, and the angle between the two relatively close sides of the two grooves 21 is 93°;

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

[0052] On the basis of the above embodiment, in order to ensure cutting safety, a mounting plate 1 is provided on the top of the blade 2. 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 the fastening bolts.

[0053] The blade 2 and the mounting plate 1 can be set as an integrated structure, or can be detachably connected by a snap-fit ​​structure, bolt connection, etc. For example, the blade 2 is interference installed in the mounting groove of the mounting plate 1, or the blade 2 is pressed between the mounting plates 1 on both sides, and the mounting plates 1 on both sides are 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 can avoid directly punching holes on the blade 2, thereby avoiding the stress concentration problem at the holes of the blade 2 and ensuring the structural strength of the blade 2.

[0055] On the basis of the above embodiment, in order to improve the installation stability of the blade 2, the mounting plate 1 can be set to a U-shaped structure, and the horizontal plate of the mounting plate 1 is provided with threaded mounting holes 11, and the threaded mounting holes 11 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 two ends of the blade 2.

[0056] Please refer to Figure 2 The mounting plate 1 is arranged at one end of the blade 2. Compared with the case where the mounting plate 1 is arranged at the center of the length direction of the blade 2, the center of gravity of the cutting tool is relatively stronger, and it is more convenient for the blade 2 to cut forward.

[0057] Furthermore, the front end of the side plate of the mounting plate 1 can be set as a wedge-shaped surface, and the rear end of the side plate of the mounting plate 1 can be set as 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 inwardly and arranged at both ends of the horizontal plate. The inclination angle of the side plate of the mounting plate 1 and the horizontal plate is determined according to the angle between the top side surface of the cutting groove 21 of the blade 2 and the vertical surface 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 provided 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, high installation stability and reliability.

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

[0061] In this embodiment, the blade 2 is clamped 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 further ensures the safety of the cutting tool.

[0062] The mounting plate 1 and the blade 2 can be designed as an integrated structure, which can simplify the structure of the cutting tool on the one hand, and avoid the stress concentration problem at the connection between the blade 2 and the mounting plate 1 on the other hand, and has greater stability and safety.

[0063] Of course, the blade 2 and the mounting plate 1 may also be detachably connected to avoid replacing the blade 2 and the mounting plate 1 simultaneously when the blade 2 is damaged, thereby reducing replacement costs.

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

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

[0066] The shape of the positioning column is not limited, but it is mostly set as a cylindrical positioning column with a regular shape and easy processing; the number and distribution of the positioning columns 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 to prevent the positioning columns from affecting the tightening of the fastening bolts and to ensure that the fastening bolts have sufficient installation space.

[0067] In this embodiment, the setting of the positioning column can facilitate the rapid alignment of the handle and the mounting plate on the one hand, and on the other hand, it can determine whether the handle is installed in place through the relative position relationship between the positioning column and the top surface of the handle, thereby ensuring a stable and reliable connection between the handle and the positioning plate 1 and ensuring the safety of the cutting tool.

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

[0069] The above is a detailed introduction to the cutting tool for repairing elastomer glue provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

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

2. The cutting tool for repairing elastomer glue according to claim 1, characterized in that: The cross-sectional shape of the blade (2) in the cross section is an axisymmetric figure, and the cutting groove (21) is arranged symmetrically with respect to the vertical symmetry plane of the blade (2).

3. The cutting tool for repairing elastomer glue according to claim 2, characterized in that: The groove (21) comprises 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 line structure in the cross section.

4. The cutting tool for repairing elastomer glue 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 elastomer glue according to claim 4, characterized in that: The cutting groove (21) is provided with cutting edges at both ends in the extension 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 elastomer glue according to any one of claims 1 to 5, characterized in that: A mounting plate (1) is provided on the top of the blade (2); 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 elastomer glue according to claim 6, characterized in that: The mounting plate (1) is 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, and the side plates at both ends of the horizontal plate (1) are connected to the top ends of the blade (2).

8. The cutting tool for repairing elastomer glue according to claim 7, characterized in that: The side plate of the mounting plate (1) is provided with a mounting hole for mounting a fastener, the top of the blade (2) is provided with a connecting hole for mounting the fastener, and the mounting plate (1) and the blade (2) are detachably connected via the fastener.

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

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