Punching cutter for edge of sound insulation pad

Abstract

The utility model discloses a sound insulation pad edge punching cutter which comprises an upper cutter module and a lower cutter module, the upper cutter module comprises a cutter mounting plate and a cutter, the cutter mounting plate is connected with a die and provided with a first screw hole, and the cutter is connected with the cutter mounting plate through a bolt and provided with a second screw hole. An edge sealing piece connected with the cutter mounting plate through a telescopic piece is arranged on the side, facing the mold, of the cutter, the edge sealing piece comprises a flat pressing part flush with the lower end of the cutter and an arc-shaped part concaved inwards from the flat pressing part to the mold, and a connecting part flush with the top wall of the mold is arranged at the upper end of the arc-shaped part. The flat pressing part of the edge sealing piece can reduce the influence of the drawing force of the cutter on the sound insulation pad, part of the drawing force generated by the cutter on the edge of the sound insulation pad is transferred and distributed on the flat pressing part, the arc-shaped part can buffer the drawing force from the flat pressing part, the influence of the drawing force on the edge of the sound insulation pad is reduced, and the phenomenon that the edge of the sound insulation pad is layered is prevented; later processing of the sound insulation pad is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of punching tools, in particular to a punching tool for the edge of a sound insulation pad. Background Art

[0002] With the advancement of automotive technology and the increasing pursuit of high performance, environmental friendliness, and comfort, the sound insulation of cars, like their performance, is gaining increasing attention. The higher the quality of the car, the better the sound insulation. Consequently, the automotive industry is placing increasing demands on soundproofing mats. Soundproofing mats are typically used to reduce noise from the engine and mechanical components, block heat conducted by the engine, and protect the paint from damage. Currently, the most common production process for soundproofing mats is hot-pressed, integrated punching and molding. The process involves applying heat to soften the resin or rubber powder after mold closing, bonding the top and bottom fabrics to the glass wool or lightweight PU. A punching tool, a blade mounted on the mold, then uses high pressure to punch and cut the material. After cutting, the material is edge-sealed and colored.

[0003] However, since the punching tool usually adopts a direct pressure blade, the tensile force generated by the blade during the downward pressure of the punching tool is mainly concentrated on the edge of the sound insulation pad. When the sound insulation pad is punched and cut after hot pressing, the sound insulation pad is affected by the tensile force. After the punching is completed, the edge near the blade is prone to delamination, resulting in uneven punching of the edge of the sound insulation pad, which is not conducive to the later processing of the sound insulation pad. Utility Model Content

[0004] In order to solve the technical problem in the prior art that the tensile force generated by the blade during the punching process of the punching tool is mainly concentrated on the edge of the sound insulation pad, and the edge of the sound insulation pad is prone to stratification after the punching is completed, resulting in uneven punching of the edge of the sound insulation pad, which is not conducive to the later processing of the sound insulation pad, the utility model provides the following technical solutions.

[0005] The utility model provides a punching tool for the edge of a sound insulation pad, comprising an upper tool module and a lower tool module, the upper tool module comprising a tool mounting plate provided with a first screw hole connected to a mold and a cutter provided with a second screw hole connected to the tool mounting plate by bolts, the side of the cutter facing the mold is provided with an edge sealing member connected to the tool mounting plate by a telescopic member, the edge sealing member comprises a flat pressing portion flush with the lower end of the cutter and an arc-shaped portion concave from the flat pressing portion toward the mold, the upper end of the arc-shaped portion is provided with a connecting portion flush with the top wall of the mold.

[0006] As a further technical solution, the telescopic member includes a telescopic sleeve connected to the upper portion of the edge banding member and the lower portion of the tool mounting plate, and a spring located on the outer periphery of the telescopic sleeve.

[0007] As a further technical solution, the telescopic part includes a guide column fixedly connected to the upper part of the edge banding part and slidingly connected to the tool mounting plate, and a spring sleeved on the outer periphery of the guide column and located between the upper part of the edge banding part and the lower part of the tool mounting plate.

[0008] As a further technical solution, a threaded end is provided on the upper portion of the guide column, and the threaded end is threadedly connected to an adjusting nut located above the tool mounting plate.

[0009] As a further technical solution, the adjusting nut is connected with a retaining washer.

[0010] As a further technical solution, the flattened portion is a rough horizontal surface.

[0011] The beneficial effects of the present invention are as follows: the punching tool of the present invention is provided with a retractable edge banding member on one side of the cutter, and the edge banding member is provided with a flat pressing portion flush with the lower end of the cutter and an arc-shaped portion concave from the flat pressing portion toward the mold. While the cutter punches and stretches the sound insulation pad, the flat pressing portion flattens and positions the sound insulation pad. As the cutter moves downward, the flat pressing portion gradually contracts under the action of a spring, which can reduce the effect of the tensile force of the cutter on the sound insulation pad, and transfers part of the tensile force generated by the cutter on the edge of the sound insulation pad to the flat pressing portion, thereby reducing the delamination of the edge of the sound insulation pad after punching. The arc-shaped portion on one side of the flat pressing portion can buffer the tensile force from the flat pressing portion until the gradually reduced tensile force moves to the connection portion of the edge banding member close to the top wall of the mold, further reducing the effect of the tensile force on the edge of the sound insulation pad, preventing the delamination of the edge of the sound insulation pad, and facilitating the later processing of the sound insulation pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the punching tool for the edge of the sound insulation pad of the utility model;

[0013] Figure 2 This is an exploded schematic diagram of the upper module of the punching tool for cutting the edge of the sound insulation pad of the utility model;

[0014] Figure 3 It is a schematic diagram of the lower part of the edge sealing member of the punching tool for cutting the edge of the sound insulation pad of the utility model;

[0015] Figure 4 It is a schematic diagram of an embodiment of a telescopic member of a punching tool for cutting the edge of a sound insulation pad of the present invention;

[0016] Figure 5 It is a schematic diagram of another embodiment of the telescopic punching tool for cutting the edge of the sound insulation pad of the utility model;

[0017] In the figure: 1-upper tool module; 2-lower tool module; 3-tool mounting plate; 301-first screw hole; 4-bolt; 5-cutter; 501-second screw hole; 6-telescopic member; 601-telescopic sleeve; 602-spring; 603-guide column; 604-threaded end; 605-adjusting nut; 7-edge sealing member; 701-flat pressing part; 702-arc-shaped part; 703-connecting part. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other unless there is a conflict.

[0019] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc. are used solely for descriptive purposes and should not be construed to indicate or imply relative importance or implicitly specify the quantity of the technical features referred to. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0020] like Figure 1 and Figure 2 As shown, the present invention provides a tool for punching the edges of sound insulation pads. The tool comprises an upper tool module 1 and a lower tool module 2, which are mounted on one side of the upper and lower molds of a mold, respectively, and are used to punch and cut the edges of heat-pressed sound insulation pads. The upper tool module 1 and the lower tool module 2 are positioned opposite each other. Aside from their respective cutting blades, the upper and lower tool modules 1 and 2 are otherwise identical in structure and are positioned in a vertically opposed relationship. Therefore, only the upper tool module 1 will be described in detail below.

[0021] In a preferred embodiment, the upper tool module 1 includes a tool mounting plate 3 connected to the mold. The tool mounting plate 3 can be connected to the mold by welding or bolting, and the specific connection method is not particularly limited. The tool mounting plate 3 has a first screw hole 301. A cutter 5 is connected to the lower portion of the tool mounting plate 3. The cutter 5 has a second screw hole 501 that matches the first screw hole 301. The cutter 5 can be connected to the lower portion of the tool mounting plate 3 by passing a bolt 4 through the first screw hole 301 and the second screw hole 501.

[0022] like Figure 2 and Figure 3 As shown, in a preferred embodiment, the side of the cutter 5 facing the mold is provided with an edge banding member 7 connected to the tool mounting plate 3, and a telescopic member 6 is connected between the edge banding member 7 and the tool mounting plate 3. When the tool upper module 1 descends, the edge banding member 7 and the cutter 5 descend synchronously and abut against the edge of the sound insulation pad. The cutter 5 continues to descend, and the edge banding member 7 continues to descend and presses down the edge of the sound insulation pad at a speed slower than the cutter 5 under the action of the telescopic member 6, thereby reducing the tensile force of the cutter 5 on the edge of the sound insulation pad and keeping the edge of the sound insulation pad stable at a certain pressure.

[0023] In a preferred embodiment, the edge seal 7 includes a flattening portion 701 that is flush with the lower end of the cutter 5. The lower portion of the flattening portion 701 is a rough horizontal surface that facilitates stable downward pressure on the edge of the sound insulation pad. A concave arcuate portion 702 is provided from the flattening portion 701 toward the mold, and a connecting portion 703 is provided at the upper end of the arcuate portion 702 that is flush with the mold top wall. The arcuate portion 702 can buffer the tensile force from the flattening portion 701 until the gradually decreasing tensile force moves to the connecting portion 703 of the edge seal 7 near the mold top wall, further reducing the impact of the tensile force on the edge of the sound insulation pad.

[0024] like Figure 2 and Figure 4 As shown, in a preferred embodiment, the telescopic member 6 includes a telescopic sleeve 601 connected to the upper portion of the edge banding member 7 and the lower portion of the cutter mounting plate 3, and a spring 602 located on the periphery of the telescopic sleeve 601. As the edge banding member 7 and the cutter 5 are pressed downward, the spring 602 gradually compresses, the telescopic sleeve 601 contracts, and the edge banding member 7 continues to descend at a slower speed than the cutter 5, pressing down on the edge of the sound insulation mat. After the spring 602 is compressed to its maximum, the edge banding member 7 and the cutter 5 descend at the same speed, thereby reducing the tensile force of the cutter 5 on the edge of the sound insulation mat.

[0025] like Figure 5 As shown, in another preferred embodiment, the telescopic member 6 includes a guide column 603 fixedly connected to the upper part of the edge banding member 7, the guide column 603 is slidably connected to the tool mounting plate 3, and a spring 602 is sleeved on the outer periphery of the guide column 603. The spring 602 is fixedly connected to the upper part of the edge banding member 7 and the lower part of the tool mounting plate 3. Thus, when the edge banding member 7 and the cutter 5 are pressed down, the spring 602 is gradually compressed, the guide column 603 slides upward, and the edge banding member 7 continues to descend at a slower speed than the cutter 5 and presses down the edge of the sound insulation pad, thereby reducing the tensile force of the cutter 5 on the edge of the sound insulation pad.

[0026] The fixed connection between the spring 602 and the edge banding member 7 and the tool mounting plate 3 is not necessary. At this time, a threaded end 604 is provided on the upper part of the guide column 603. The threaded end 604 is threadedly connected to an adjusting nut 605 located above the tool mounting plate 3 to prevent the guide column 603 from slipping. The adjusting nut 605 is connected to a stop gasket, and the adjusting nut 605 can be screwed to adjust the up and down sliding distance of the guide column 603.

[0027] When the present invention is in use, the assembled tool upper module 1 and tool lower module 2 are respectively installed on one side of the upper mold and the lower mold of the mold; then the mold is preheated, and the sound insulation pad material is placed in the mold after preheating; the mold is pressed downward, and the edge sealing member 7 and the cutter 5 are synchronously lowered and abutted against the edge of the sound insulation pad, and the cutter 5 continues to descend. Under the action of the telescopic member 6, the edge sealing member 7 continues to descend and presses down the edge of the sound insulation pad at a speed slower than the cutter 5, thereby buffering the tensile force from the cutter 5 and reducing the impact on the edge of the sound insulation pad. The cutter 5 continues to press down to complete the punching operation.

[0028] The preferred specific implementation methods and embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above implementation methods and embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments that fall within the scope of the claims of this application belong to the scope of protection of the present invention.

Claims

1. A punching tool for cutting the edge of a sound insulation pad, comprising an upper tool module (1) and a lower tool module (2), characterized in that: The tool upper module (1) comprises a tool mounting plate (3) provided with a first screw hole (301) connected to the mold, and a cutter (5) provided with a second screw hole (501) connected to the tool mounting plate (3) via a bolt (4); a side of the cutter (5) facing the mold is provided with an edge sealing member (7) connected to the tool mounting plate (3) via a telescopic member (6); the edge sealing member (7) comprises a flat pressing portion (701) flush with the lower end of the cutter (5) and an arc-shaped portion (702) concave from the flat pressing portion (701) toward the mold; and a connecting portion (703) flush with the top wall of the mold is provided at the upper end of the arc-shaped portion (702).

2. The punching tool for cutting the edge of the sound insulation pad according to claim 1, characterized in that: The telescopic member (6) comprises a telescopic sleeve (601) connected to the upper portion of the edge banding member (7) and the lower portion of the tool mounting plate (3), and a spring (602) located on the periphery of the telescopic sleeve (601).

3. The punching tool for cutting the edge of the sound insulation pad according to claim 1, characterized in that: The telescopic member (6) comprises a guide post (603) fixedly connected to the upper portion of the edge sealing member (7) and slidably connected to the tool mounting plate (3), and a spring (602) sleeved on the outer periphery of the guide post (603) and located between the upper portion of the edge sealing member (7) and the lower portion of the tool mounting plate (3).

4. The punching tool for cutting the edge of the sound insulation pad according to claim 3, characterized in that: A threaded end (604) is provided on the upper portion of the guide column (603), and the threaded end (604) is threadedly connected to an adjusting nut (605) located above the tool mounting plate (3).

5. The punching tool for cutting the edge of the sound insulation pad according to claim 4, characterized in that: The adjusting nut (605) is connected with a stop washer.

6. The punching tool for cutting the edge of the sound insulation pad according to claim 1, characterized in that: The flattening portion (701) is a rough horizontal surface.

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