Automatic bending die for porous plate of muffler liner

Abstract

The utility model relates to the technical field of plate processing discloses an automatic bending die of the porous plate of the inner bag of silencer, including work table and the support leg of connection setting at the bottom end of work table, install setting limit mechanism and push material mechanism on the work table, the limit mechanism includes the lower mould of connection setting at the top end surface of work table, can be inserted on its outer wall through the hole of the porous plate that the limit rod that sets up, like this can be through the hole of the porous plate itself and carry out limit fixing, in this way need not to carry out the shape edge positioning to the porous plate to guarantee the relative position accuracy between the bending line and the hole row on the porous plate to prevent the bending line from passing through the hole, causes the serious deformation, the crack of the hole, influences the acoustic performance and structural strength of silencer.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal processing technology, specifically, it relates to an automated bending mold for a perforated plate for a muffler liner. Background Technology

[0002] As a core noise reduction component in industrial equipment, automobiles and other fields, the structural precision of the perforated plate inside the muffler directly determines the sound wave reflection path and airflow guidance efficiency, playing a decisive role in the noise reduction performance of broadband noise (200Hz-5000Hz).

[0003] When bending, the sheet material needs to be positioned. Traditional positioning is done by fixing and limiting the edge of the sheet material. This makes it difficult to ensure the relative positional accuracy between the bending line and the hole array. As a result, the bending line may pass through the hole during bending, causing severe deformation and cracking of the hole, which affects the acoustic performance and structural strength of the muffler.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] To address the issue of positioning sheet metal during bending, traditional methods rely on fixing and limiting the sheet metal's outer edge. However, this makes it difficult to guarantee the relative positional accuracy between the bending line and the perforated holes. Consequently, during bending, the bending line can pass through the holes, causing severe deformation and cracking, thus affecting the acoustic performance and structural strength of the muffler. To resolve these technical problems, the basic concept of this utility model is as follows: An automated bending die for a perforated plate for a muffler liner includes a worktable and a support leg connected to the bottom of the worktable. A limit mechanism and a pushing mechanism are installed on the worktable. The limiting mechanism includes a lower mold connected to the top surface of the workbench, and a limiting rod is provided on the lower mold. The limiting rod can be inserted into and limited by the holes on the perforated plate. The pushing mechanism includes a pusher plate set on the workbench, which is used to assist in pushing the bent perforated plate.

[0006] In a preferred embodiment of this utility model, the limiting mechanism includes a movable groove formed on the top surface of the lower mold, a limiting slide groove formed on the inner wall of the movable groove, a slider slidably disposed on the inner wall of the movable groove, a limiting slider connected to the outer wall of the slider, the outer wall of the limiting slider slidably disposed on the inner wall of the limiting slide groove, a sliding hole formed on the top surface of the slider, a first spring connected to the bottom end of the inner wall of the sliding hole, the end of the first spring away from the inner wall of the sliding hole connected to the bottom end of the limiting rod, a lead screw rotatably disposed on one side of the outer wall of the slider, the outer wall of the lead screw threadedly connected to the lower mold, and a handle connected to the outer wall of the end of the lead screw away from the slider.

[0007] In a preferred embodiment of the present invention, the pushing mechanism includes a slide groove formed on the top surface of the worktable. A second spring is connected to the bottom end of the inner wall of the slide groove. A connecting rod is connected to the end of the second spring away from the inner wall of the slide groove. The end of the connecting rod away from the second spring is connected to the bottom end of the push plate.

[0008] In a preferred embodiment of this utility model, a support is connected to the workbench, a hydraulic cylinder is installed on the top surface of the support, and an upper mold is connected to the output end of the hydraulic cylinder.

[0009] In a preferred embodiment of this utility model, the outer wall of the slider is fitted with the inner wall of the movable groove, and the outer wall of the limiting slider is fitted with the inner wall of the limiting groove.

[0010] In a preferred embodiment of this utility model, there are two push plates, which are distributed symmetrically on the left and right sides of the lower mold.

[0011] In a preferred embodiment of this utility model, the outer wall of the connecting rod is fitted to the inner wall of the groove opened on the top surface of the workbench.

[0012] Compared with the prior art, the present invention has the following advantages: This invention, through the setting of a limiting rod, allows the holes on the perforated plate to be inserted into its outer wall. This allows for limiting and fixing through the holes of the perforated plate itself, eliminating the need for positioning the outer edge of the perforated plate. This ensures the relative positional accuracy between the bending line and the row of holes on the perforated plate, thereby preventing the bending line from passing through the holes and causing severe deformation or cracking of the holes, which would affect the acoustic performance and structural strength of the muffler.

[0013] This invention allows the perforated plate to bend and contact the push plate, causing the connecting rod to move downwards and simultaneously compressing the second spring. As the upper mold moves upwards, the perforated plate loses its compression, and the second spring rebounds, causing the push plate to move upwards to reset. This, in turn, moves the perforated plate upwards until the holes on the perforated plate disengage from the limit rod, thus completing the material pushing process and facilitating subsequent material unloading.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the sleeve of this utility model; Figure 3 This is a cross-sectional view of the limiting mechanism of this utility model; Figure 4 This is a schematic diagram of the separation structure of the feeding mechanism of this utility model.

[0016] In the diagram: 1. Workbench; 2. Support leg; 31. Limiting mechanism; 311. Lower mold; 312. Movable groove; 313. Limiting slide groove; 314. Slider; 315. Limiting slider; 316. First spring; 317. Limiting rod; 318. Lead screw; 319. Handle; 3110. Bracket; 3111. Hydraulic cylinder; 3112. Upper mold; 32. Pushing mechanism; 321. Second spring; 322. Connecting rod; 323. Push plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0018] like Figures 1 to 4 As shown, an automated bending die for a perforated plate of a muffler liner includes a workbench 1 and a support leg 2 connected to the bottom of the workbench 1. A limiting mechanism 31 and a pushing mechanism 32 are installed on the workbench 1. The limiting mechanism 31 includes a lower die 311 connected to the top surface of the workbench 1. A limiting rod 317 is provided on the lower die 311. The limiting rod 317 can insert and limit the holes on the perforated plate. The pushing mechanism 32 includes a push plate 323 provided on the workbench 1. The push plate 323 is used to assist in pushing the bent perforated plate.

[0019] Furthermore, the limiting mechanism 31 includes a movable groove 312 formed on the top surface of the lower mold 311, a limiting groove 313 formed on the inner wall of the movable groove 312, a slider 314 slidably arranged on the inner wall of the movable groove 312, a limiting slider 315 connected to the outer wall of the slider 314, the outer wall of the limiting slider 315 slidably arranged on the inner wall of the limiting groove 313, a sliding hole formed on the top surface of the slider 314, a first spring 316 connected to the bottom end of the inner wall of the sliding hole, the end of the first spring 316 away from the inner wall of the sliding hole connected to the bottom end of the limiting rod 317, a lead screw 318 rotatably arranged on one side of the outer wall of the slider 314, the outer wall of the lead screw 318 threadedly connected to the lower mold 311, and a handle 319 connected to the outer wall of the end of the lead screw 318 away from the slider 314.

[0020] Furthermore, a support 3110 is connected to the workbench 1, a hydraulic cylinder 3111 is installed on the top surface of the support 3110, and an upper mold 3112 is connected to the output end of the hydraulic cylinder 3111.

[0021] Furthermore, the outer wall of slider 314 is fitted with the inner wall of movable groove 312, and the outer wall of limiting slider 315 is fitted with the inner wall of limiting groove 313, thereby improving the stability of slider 314 during the moving support process.

[0022] The pushing mechanism 32 includes a slide groove on the top surface of the workbench 1. A second spring 321 is connected to the bottom end of the inner wall of the slide groove. A connecting rod 322 is connected to the end of the second spring 321 away from the inner wall of the slide groove. The end of the connecting rod 322 away from the second spring 321 is connected to the bottom end of the push plate 323.

[0023] Furthermore, there are two push plates 323, which are distributed symmetrically on the left and right sides of the lower mold 311. The push plates 323 on both sides can be used to push the material evenly on both sides of the perforated plate.

[0024] Furthermore, the outer wall of the connecting rod 322 fits snugly against the inner wall of the groove on the top surface of the workbench 1, thereby improving the tight fit between the connecting rod 322 and the groove, and thus improving the support stability of the connecting rod 322.

[0025] The implementation principle of the automated bending die for a perforated plate in a muffler liner in this embodiment is as follows: During processing, the perforated plate is first placed on the top surface of the lower die 311. Before placement, the row of holes in the perforated plate is aligned with the top surface of the lower die 311. Then, the positions of the two side limit rods 317 are adjusted. After the limit rods 317 are adjusted, the perforated plate can be placed on the top surface of the lower die 311. At this time, the holes in the perforated plate will be inserted into the outer wall of the two side limit rods 317. In this way, the insertion and limiting of the perforated plate can be completed by the two side limit rods 317. After placement, the hydraulic cylinder 3111 can be started. Its output end will drive the upper die 3112 to move downward. When the upper die 3112 moves downward... When the limit rod 317 is moved to its top surface, it will be squeezed, allowing the limit rod 317 to move downwards and squeeze the first spring 316 until the upper mold 3112 and the lower mold 311 are in contact. At this time, the limit rod 317 will be completely retracted into the lower mold 311, thus completing the bending process. After the process is completed, the upper mold 3112 moves upwards, and the limit rod 317 will move upwards due to the rebound of the first spring 316, thus re-inserting into the hole of the perforated plate. This ensures the relative positional accuracy between the bending line and the hole row on the perforated plate, thereby preventing the bending line from passing through the hole, causing serious deformation and cracking of the hole, and affecting the acoustic performance and structural strength of the muffler. When it is necessary to adjust the spacing of the limiting rods 317 according to the spacing of the holes between different perforated plates, the handle 319 can be rotated. The handle 319 will then drive the lead screw 318 to rotate, and the lead screw 318 will move laterally on the lower mold 311. As the lead screw 318 moves, it will drive the slider 314 to move. As the slider 314 moves, it will synchronously drive the limiting rods 317 to move, thereby completing the position adjustment of the limiting rods 317 and improving applicability.

[0026] During the bending process, the perforated plate is bent on both sides due to the processing of the upper mold 3112 and the lower mold 311. The bent parts on both sides of the perforated plate will contact and squeeze the push plate 323. The squeezed push plate 323 can drive the connecting rod 322 to move downward and squeeze the second spring 321. As the upper mold 3112 moves upward, the perforated plate will lose the compression limit. Then, as the second spring 321 rebounds, it can drive the push plate 323 to move upward. As the push plate 323 moves upward, it can drive the bent perforated plate to move upward until the holes on the perforated plate are pushed out of the insertion between the limit rod 317, thus completing the material pushing and facilitating the subsequent unloading operation.

Claims

1. An automated bending die for a perforated plate of a muffler liner, comprising a worktable (1) and a support leg (2) connected to the bottom end of the worktable (1), characterized in that, A limit mechanism (31) and a pusher mechanism (32) are installed on the workbench (1). The limiting mechanism (31) includes a lower mold (311) connected to the top surface of the workbench (1), and a limiting rod (317) is provided on the lower mold (311). The limiting rod (317) can be inserted and limited to the holes on the perforated plate. The pushing mechanism (32) includes a push plate (323) set on the workbench (1), which is used to assist in pushing the bent perforated plate.

2. The automated bending die for a perforated plate of a muffler inner liner according to claim 1, characterized in that, The limiting mechanism (31) includes a movable groove (312) opened on the top surface of the lower mold (311). A limiting slide groove (313) is opened on the inner wall of the movable groove (312). A slider (314) is slidably arranged on the inner wall of the movable groove (312). A limiting slider (315) is connected to the outer wall of the slider (314). The outer wall of the limiting slider (315) is slidably arranged on the inner wall of the limiting slide groove (313). A sliding hole is opened on the top surface of the slider (314). A first spring (316) is connected to the bottom end of the inner wall of the sliding hole. The end of the first spring (316) away from the inner wall of the sliding hole is connected to the bottom end of the limiting rod (317). A lead screw (318) is rotatably arranged on one side of the outer wall of the slider (314). The outer wall of the lead screw (318) is threadedly connected to the lower mold (311). A handle (319) is connected to the outer wall of the end of the lead screw (318) away from the slider (314).

3. The automated bending die for a perforated plate in a muffler liner according to claim 1, characterized in that, The pushing mechanism (32) includes a slide groove on the top surface of the workbench (1). A second spring (321) is connected to the bottom end of the inner wall of the slide groove. A connecting rod (322) is connected to the end of the second spring (321) away from the inner wall of the slide groove. The end of the connecting rod (322) away from the second spring (321) is connected to the bottom end of the push plate (323).

4. The automated bending die for a perforated plate in a muffler liner according to claim 2, characterized in that, A support (3110) is connected to the workbench (1), a hydraulic cylinder (3111) is installed on the top surface of the support (3110), and an upper mold (3112) is connected to the output end of the hydraulic cylinder (3111).

5. The automated bending die for a perforated plate of a muffler liner according to claim 2, characterized in that, The outer wall of the slider (314) is fitted with the inner wall of the movable groove (312), and the outer wall of the limiting slider (315) is fitted with the inner wall of the limiting groove (313).

6. The automated bending die for a perforated plate of a muffler liner according to claim 3, characterized in that, There are two push plates (323), which are distributed on the left and right sides of the lower mold (311) in a symmetrical structure.

7. The automated bending die for a perforated plate in a muffler liner according to claim 3, characterized in that, The outer wall of the connecting rod (322) fits snugly against the inner wall of the groove opened on the top surface of the workbench (1).

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