Blanking tool for automatic chip mounting

Abstract

The invention provides a blanking tool for automatic surface mounting, and relates to the technical field of friction plate surface mounting, the blanking tool comprises a stamping knife, an elastic buffer piece and a cut-off knife; the cutter is detachably installed on one side of the blanking face of the bottom end of the stamping knife and extends out of the bottom end of the stamping knife by a certain distance, and the width of the cutter is smaller than that of the bottom end of the stamping knife. The elastic buffer piece is detachably installed on the blanking face at the bottom end of the stamping knife, and the sectional area of the elastic buffer piece spliced with the cutting knife is equal to the area of the blanking face of the stamping knife. An air suction channel is formed in the stamping knife and extends downwards to the bottom end of the air suction channel, a telescopic air pipe is arranged in the elastic buffering piece and communicates with the interior of the air suction channel, and the air suction channel is used for being externally connected with a vacuum generator. Cutting of the friction paper strips is achieved through shearing force, the impact force on the surfaces of the friction paper strips is weakened, the friction paper strips are conveyed to the framework through adsorption force, and the paster yield can be effectively increased.

Description

Technical Field

[0001] The invention relates to the technical field of friction plate pasting, and in particular to a punching tool for automatic pasting. Background Art

[0002] The placement machine uses a punch to cut the friction material and then sends it to the aluminum frame brushed with glue. It is a key equipment in the production of motorcycle friction plates.

[0003] When applying friction plates, the aluminum frame is first grabbed by a mechanical claw and placed on the turntable station. The turntable station is then rotated to apply the glue. Finally, the friction material is cut by a punch and accurately delivered to the bonding surface of the aluminum frame to complete the friction plate application. However, during the process of the punching knife cutting the friction paper strip into small pieces and pushing them onto the aluminum frame, the small pieces of friction paper are in a state of inertia and free fall, which causes them to often become skewed or fall off after freely falling on the frame, resulting in a low patch yield rate; in addition, during long-term use, the punching surface of the punching knife is easily blunted after being worn around, and eventually evolves into using tearing force to tear the friction paper strip into small pieces. The small pieces of friction paper obtained after tearing will have burrs, which further reduces the patch yield rate; finally, since the punching knife uses a large impact force to achieve the punching of the friction paper strip, the small pieces of friction paper will be subjected to a certain impact force after falling on the frame, making the surface of the small pieces of friction paper attached to the frame easily damaged by the impact force, thereby further reducing the wear resistance or service life of the product. Summary of the Invention

[0004] In view of the problems mentioned in the above background technology, the present invention provides a punching tool for automatic patch, comprising: a punching knife, an elastic buffer and a cutting knife; The cutter is detachably mounted on one side of the punching surface at the bottom end of the punching knife, and the cutter extends a distance from the bottom end of the punching knife. The width of the cutter is smaller than the width of the bottom end of the punching knife. The elastic buffer is detachably mounted on the blanking surface at the bottom end of the punching knife, and the cross-sectional area of ​​the elastic buffer and the cutter after being spliced ​​is equal to the blanking surface area of ​​the punching knife; An air suction channel is provided inside the punching knife, the air suction channel extends downward to the bottom end of the air suction channel, a telescopic air pipe is provided inside the elastic buffer, the telescopic air pipe is communicated with the air suction channel, and the air suction channel is used to connect to an external vacuum generator; The punching knife can reciprocate up and down under the action of the driving source. During the downward movement of the punching knife, the cutter cuts the friction paper strip located below the punching knife. The cut friction paper can be adsorbed on the bottom end of the elastic buffer and pushed to the skeleton surface of the paper-based friction plate located at the lower end of the punching knife. After being in pressure contact with the glue on the skeleton surface, it is bonded to the skeleton surface to complete a patch.

[0005] As a further illustration of the present invention, the cutting knife is integrally formed of a handle and a blade.

[0006] As a further explanation of the present invention, the bottom end of the blade is provided with a tip inclined along the width direction of the cutter, the angle between the inclined surface of the tip and the cutting surface of the bottom end of the punch is 0°-15°, and the height of the tip extending downward is 0.1-0.5mm.

[0007] As a further illustration of the present invention, the bottom end of the elastic buffer is flush with the bottom end of the blade, and the tip extends downward from the elastic buffer by a distance of 0.1-0.5 mm.

[0008] As a further explanation of the present invention, a knife groove is provided on one side of the bottom end of the punching knife, and the knife handle can be embedded in the knife groove. Threaded holes are provided on the sides of the knife handle and the knife groove, and the knife handle and the knife groove are detachably connected by screws that cooperate with the threaded holes.

[0009] As a further illustration of the present invention, the distance that the cutting knife extends from the bottom end of the punching knife is 0.7 mm-0.8 mm.

[0010] As a further illustration of the present invention, the punching knife and the cutting knife are both made of carbon fiber material.

[0011] As a further illustration of the present invention, the hardness of the cutter is 75-88HRC.

[0012] As a further illustration of the present invention, the elastic buffer is a spring, elastic rubber or a sponge block.

[0013] As a further illustration of the present invention, the elastic buffer and the bottom end of the punching blade are bonded with glue to achieve a detachable connection.

[0014] As a further explanation of the present invention, an air hole is opened on the side of the punching knife, and the air hole is connected to the inside of the suction channel.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention replaces the traditional single-blade punching method by attaching a cutting blade to one side of the bottom end of the punch. This replaces the original impact force with a shear force, which is used to cut the friction paper strip. Therefore, even if the punch is used for a long time, the cut small friction paper strips are less likely to have burrs. In addition, because the friction paper strips can be cut with a small shear force, the downward impact force of the punch can be greatly reduced. After the small friction paper strips fall on the frame, the impact force is also weakened, thereby reducing the impact force on the surface of the small friction paper strips attached to the frame, further improving the patch yield rate. Secondly, a corresponding suction channel is provided on the punch, and an external vacuum generator is connected to allow the cut friction paper strips to be adsorbed on the bottom end of the elastic buffer and pushed onto the frame surface of the paper-based friction sheet located at the bottom end of the punch. This avoids the problem of small friction paper strips being in an inertial and free-falling state after being punched by traditional tools, which often causes the small friction paper strips to skew or fall after freely falling on the frame, resulting in a low patch yield rate. Finally, an elastic buffer is provided at the bottom end of the punching knife, and is flush with the bottom end of the cutter. Correspondingly, a telescopic air tube connected to the suction channel is provided inside the elastic buffer. Such a design can immediately adsorb the small section of friction paper cut by the cutter. Without the design of the elastic buffer here, there is a certain height difference between the bottom end of the cutter and the bottom cutting surface of the punching knife. The small section of friction paper just cut off will not be stably adsorbed by the suction channel of the punching knife due to the height difference, and there will still be the problem of the friction paper falling freely. The existence of the elastic buffer just makes up for the height difference there, and the elastic design of the elastic buffer can ensure that it is compressed during the downward shearing process of the cutter, thereby avoiding it affecting the normal cutting work of the cutter. In addition, the elastic design of the elastic buffer can further reduce its impact force on the surface of the small section of friction paper attached to the skeleton.

[0016] Other features and advantages of this technical solution will be described in the subsequent description, and in part will become apparent from the description, or understood by practicing this technical solution. The objectives and other advantages of this technical solution can be achieved and obtained through the structures specifically pointed out in the written description and the accompanying drawings.

[0017] The technology of this technical solution is further described in detail below through the drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present technical solution and constitute a part of the specification. Together with the embodiments of the present technical solution, they are used to explain the present technical solution and do not constitute a limitation to the present technical solution.

[0019] Figure 1 This is a schematic diagram of the punching state of the automatic patch punching knife provided by the present invention.

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the automatic patch punching tool provided by the present invention.

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of the automatic patch punching tool provided by the present invention.

[0022] Figure 4 This is a side structural schematic diagram of the automatic patch punching tool provided by the present invention.

[0023] Figure 5 This is a schematic structural diagram of the paper-based friction plate provided by the present invention.

[0024] Figure 6 This is a schematic diagram of the friction paper strip structure provided by the present invention.

[0025] In the attached figure: Cam drive mechanism 1, knife pressing block 2, punching knife 3, knife groove 31, air hole 32, suction channel 33, friction paper strip 4, paper-based friction plate 5, friction paper plate 51, skeleton 52, screw 6, elastic buffer 7, telescopic air tube 71, cutter 8, knife handle 81, blade 82, and tip 83. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present technical solution are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present technical solution and are not used to limit the present technical solution.

[0027] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as center, longitudinal, transverse, up, down, front, back, left, right, vertical, horizontal, inside, and outside are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or limiting the present invention. In addition, the terms "first, second" and the like are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first, second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted, connected, and connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, an integral connection, or the internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] When applying paper-based friction plates, a mechanical claw is first used to grab the aluminum frame and place it on the turntable station. The turntable station is then rotated to apply the glue. Finally, a punch cuts the friction material and accurately delivers it to the bonding surface of the aluminum frame to complete the friction plate application operation. However, during the process of the punching knife cutting the friction paper strip into small pieces and pushing them onto the aluminum frame, the small pieces of friction paper are in a state of inertia and free fall, which causes them to often become skewed or fall off after freely falling on the frame, resulting in a low patch yield rate; in addition, during long-term use, the punching surface of the punching knife is easily blunted after being worn around, and eventually evolves into using tearing force to tear the friction paper strip into small pieces. The small pieces of friction paper obtained after tearing will have burrs, which further reduces the patch yield rate; finally, since the punching knife uses a large impact force to achieve the punching of the friction paper strip, the small pieces of friction paper will be subjected to a certain impact force after falling on the frame, making the surface of the small pieces of friction paper attached to the frame easily damaged by the impact force, thereby further reducing the wear resistance or service life of the product.

[0030] Based on the above technical defects, such as Figure 1-Figure 5 As shown, the present invention provides a punching tool for automatic patch, comprising: a punching knife 3, an elastic buffer 7 and a cutting knife 8 ( Figure 2 、 Figure 3 and Figure 4 ); The cutter 8 is detachably mounted on one side of the blanking surface at the bottom end of the punching knife 3, and the cutter 8 extends a certain distance from the bottom end of the punching knife 3, and the width of the cutter 8 is smaller than the width of the bottom end of the punching knife 3; the elastic buffer 7 is detachably mounted on the blanking surface at the bottom end of the punching knife 3, and the cross-sectional area of ​​the elastic buffer 7 and the cutter 8 after splicing is equal to the blanking surface area of ​​the punching knife 3; an air suction channel 33 is provided inside the punching knife 3, and the air suction channel 33 extends downward to the bottom end of the air suction channel 33, and a telescopic air pipe 71 is provided inside the elastic buffer 7, and the telescopic air pipe 71 is connected to the inside of the air suction channel 33, and the air suction channel 3 is used to connect an external vacuum generator.

[0031] When using this punching tool, if Figure 1 As shown, the punching knife 3 is installed on the driving source through the knife pressing block 2, so that it can reciprocate up and down under the action of the driving source. The driving source can be, for example, a cam driving mechanism 1, and the cam driving mechanism 1 realizes the reciprocating motion of the punching knife 3 ( Figure 1 ).like Figure 2 、 Figure 3 and Figure 4As shown, the side of the punching blade 3 is provided with an air hole 32, which is connected to the interior of the suction channel 33. The external vacuum suction pipe of the vacuum generator is connected to the air hole 32 and then connected to the interior of the suction channel 33, which can form a negative pressure at the bottom of the telescopic air pipe 71, thereby adsorbing the friction paper 51 located below the elastic buffer 7. When the punching blade 3 moves downward, the cutting blade 8 cuts the friction paper strip 4 located below the punching blade 3 ( Figure 6 ), the cut friction paper 51 can be adsorbed on the bottom of the elastic buffer 7 and pushed to the paper-based friction plate 5 ( Figure 5 ) on the surface of the skeleton 52 (when the friction paper 51 contacts the glue on the surface of the skeleton, the suction force is less than the adhesive force of the glue), and after pressure contact with the glue on the surface of the skeleton 52, it is bonded to the surface of the skeleton 52 to complete a patch.

[0032] The improved punching tool of the present invention first replaces the traditional punching method of a single punching blade 3 by adding a cutting blade 8 to one side of the bottom end of the punching blade 3, replaces the original impact force with shear force, and utilizes shear force to achieve cutting of the friction paper strip 4. Therefore, even if the punching blade 3 is used for a long time, the small friction paper segment after cutting is not prone to burrs. In addition, since the friction paper strip 4 can be cut with a smaller shear force, the downward impact force of the punching blade 3 can be greatly reduced. After the small friction paper segment falls on the skeleton, the impact force it receives will also be weakened, thereby reducing the impact force on the surface of the small friction paper segment attached to the skeleton, further improving the patch yield rate. Secondly, a corresponding suction channel 33 is provided on the punching knife 3, and an external vacuum generator is used to enable the cut friction paper 51 to be adsorbed on the bottom end of the elastic buffer 7 and pushed to the surface of the skeleton 52 of the paper-based friction plate 5 located at the lower end of the punching knife 3, thereby avoiding the problem that the small friction paper segments punched by traditional tools are in an inertial and free-falling state, which causes the small friction paper segments to fall freely on the skeleton and often become skewed or fall, resulting in a low patch yield rate. Finally, an elastic buffer 7 is provided at the bottom end of the punching knife 3. Accordingly, a telescopic air tube 71 connected to the suction channel 33 is provided inside the elastic buffer 7. Such a design can enable the small section of friction paper 51 cut by the cutter 8 to be immediately adsorbed. Without the design of the elastic buffer 7 here, due to the certain height difference between the bottom end of the cutter 8 and the bottom punching surface of the punching knife 3, the small section of friction paper 51 just cut off will not be stably adsorbed by the suction channel of the punching knife 3 due to the existence of the height difference, and there will still be the problem of the friction paper 51 falling freely. The existence of the elastic buffer 7 just makes up for the height difference there. The elastic design of the elastic buffer 7 and the telescopic air tube 71 inside can ensure that it is compressed during the downward shearing process of the cutter 8, thereby avoiding affecting the normal cutting work of the cutter 8. In addition, the elastic design of the elastic buffer 7 can further reduce its impact force on the surface of the small section of friction paper attached to the skeleton.

[0033] In some feasible embodiments, the cutter 8 is integrally formed from a handle 81 and a blade 82. Furthermore, a cutter slot 31 is provided on one side of the bottom end of the punching blade 3, into which the handle 81 can be inserted. Threaded holes are provided on the sides of the handle 81 and the cutter slot 31, and the handle 81 and the cutter slot 31 are detachably connected via screws 6 engaging the threaded holes. By designing the cutter 8 to be detachably connected to the punching blade 3, the cutter 8 can be easily replaced separately. When the cutter 8 becomes dull or damaged due to long-term use and needs to be replaced, it can be removed and replaced separately.

[0034] In some feasible embodiments, the cutting knife 8 extends from the bottom end of the punching knife 3 by 0.7-0.8 mm, and this distance design can be adapted to the cutting of the friction paper strip 4 with a thickness of about 0.6 mm.

[0035] In some achievable ways, such as Figure 2-Figure 4 As shown, the bottom end of blade 82 is provided with a tip 83 inclined along the width of cutter 8. The angle between the inclined surface of tip 83 and the cutting surface of the bottom end of punch 3 is 0°-15°, and the downward extension height of tip 83 is 0.1-0.5 mm. Accordingly, the bottom end of elastic buffer 7 is flush with the bottom end of blade 82, so that the tip 83 extends downward from elastic buffer 7 by a distance of 0.1-0.5 mm. The design of tip 83 makes the lower end of blade 82 resemble a shear blade, reducing the shear force applied during cutting, resulting in a neat cut of friction paper strip 4 and extending the life of the blade.

[0036] In some feasible embodiments, the punching knife 3 and the cutting knife 8 are both made of carbon fiber material; the cutting tools made of carbon fiber material have a higher hardness, thereby meeting their use requirements. Specifically, the hardness of the cutting knife 8 is preferably 75-88HRC. The hardness range limit can slow down the wear of the cutting knife during use and extend its service life.

[0037] In some possible implementations, the elastic buffer member 7 can be an elastic member such as a spring, elastic rubber or sponge, or other elastic member capable of compression and elastic reset, which is not specifically limited here. The elastic buffer member 7 can be detachably connected to the bottom end of the punching blade 3 by gluing.

[0038] Obviously, those skilled in the art may make various changes and modifications to this technical solution without departing from the spirit and scope of this technical solution. Thus, if these modifications and variations of this technical solution fall within the scope of the claims of this technical solution and their equivalents, this technical solution is intended to include these modifications and variations.

Claims

1. A punching tool for automatic patch, characterized in that: include: Punching knife (3), elastic buffer (7) and cutting knife (8); The cutting knife (8) is detachably mounted on one side of the punching surface at the bottom end of the punching knife (3), and the cutting knife (8) extends a distance from the bottom end of the punching knife (3), and the width of the cutting knife (8) is smaller than the width of the bottom end of the punching knife (3); The elastic buffer (7) is detachably mounted on the blanking surface at the bottom end of the punching knife (3); the cross-sectional area of ​​the elastic buffer (7) and the cutting knife (8) after being spliced ​​together is equal to the blanking surface area of ​​the punching knife (3); An air suction channel (33) is provided inside the punching knife (3), and the air suction channel (33) extends downward to the bottom end of the air suction channel (33). A telescopic air pipe (71) is provided inside the elastic buffer (7), and the telescopic air pipe (71) is communicated with the air suction channel (33). The air suction channel (3) is used to connect to an external vacuum generator. The punching knife (3) can reciprocate up and down under the action of a driving source. During the downward movement of the punching knife (3), the cutting knife (8) cuts the friction paper strip (4) located below the punching knife (3). The cut friction paper sheet (51) can be adsorbed on the bottom end of the elastic buffer (7) and pushed to the surface of the skeleton (52) of the paper-based friction sheet (5) located at the lower end of the punching knife (3). After being in pressure contact with the glue on the surface of the skeleton (52), the paper sheet is adhered to the surface of the skeleton (52), completing a patch.

2. The automatic patch punching tool according to claim 1, wherein: The cutting knife (8) is formed integrally from a handle (81) and a blade (82).

3. The automatic patch punching tool according to claim 2, wherein: The bottom end of the blade (82) is provided with a tip (83) inclined along the width direction of the cutting knife (8), the angle between the inclined surface of the tip (83) and the punching surface of the bottom end of the punching knife (3) is 0°-15°, and the height of the tip (83) extending downward is 0.1-0.5 mm.

4. The automatic patch punching tool according to claim 2, wherein: The bottom end of the elastic buffer (7) is flush with the bottom end of the blade (82), and the tip (83) extends downward from the elastic buffer (7) by a distance of 0.1-0.5 mm.

5. The automatic patch punching tool according to claim 2, wherein: A knife groove (31) is provided on one side of the bottom end of the punching knife (3), and the knife handle (81) can be embedded in the knife groove (31). Threaded holes are provided on the sides of the knife handle (81) and the knife groove (31), and the knife handle (81) and the knife groove (31) are detachably connected by means of a screw (6) engaging with the threaded hole.

6. The automatic patch punching tool according to claim 1, wherein: The cutting knife (8) extends from the bottom end of the punching knife (3) by a distance of 0.7-0.8 mm.

7. The automatic patch punching tool according to claim 1, wherein: The punching knife (3) and the cutting knife (8) are both made of carbon fiber material; the hardness of the cutting knife (8) is 75-88HRC.

8. The automatic patch punching tool according to claim 1, wherein: The elastic buffer (7) is a spring, elastic rubber or a sponge block.

9. The automatic patch punching tool according to claim 1, wherein: The elastic buffer (7) and the bottom end of the punching knife (3) are bonded with glue to achieve a detachable connection.

10. The automatic patch punching tool according to claim 1, wherein: An air hole (32) is provided on the side of the punching knife (3), and the air hole (32) is communicated with the interior of the air suction channel (33).

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