A molding device for the inner tube of a noise reducer
By combining the inner cylinder and the inner pressure arc plate, the problems of protruding edges and rolled edges in the forming process of the inner tube of the noise reducer are solved, improving the forming quality of the inner tube and ensuring operational safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN SISAIHUI ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-03
AI Technical Summary
The existing noise reducer inner tube has defects such as protruding edges and rolled edges during the forming process, which affects the quality and endangers the safety of operators.
A forming device for the inner tube of a noise reducer is adopted, which uses an inner cylinder and an inner pressure arc plate to bend and straighten the inner tube. The inner pressure arc plate is driven by a hydraulic cylinder to move inward to press the protruding edge and the rolled edge. Combined with a rotatable end support plate and a pull rod structure, the forming of the inner tube is improved.
This improves the forming quality of the inner tube, avoids the impact of raised edges and rolled edges on the quality of the inner tube, and ensures operational safety.
Smart Images
Figure CN224444161U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of noise reduction device processing technology, and in particular to a forming device for the inner tube of a noise reduction device. Background Technology
[0002] like Figure 6 The diagram shows a three-dimensional structure of the inner tube of the noise reducer, which is cylindrical in shape with multiple holes punched into its outer circumference. Typically, during processing, holes are first punched in the sheet metal, then bent into a cylindrical shape by rolling and bending, and finally welded together at the joints. However, during operation, it was found that the rolled and bent cylindrical structure is irregularly circular, and multiple protruding edges or rolled edges are formed at the punching locations. These defects affect the quality of the inner tube, especially the protruding edges or rolled edges, which can easily cause scratches to operators during processing and also affect the quality of the noise reducer. Utility Model Content
[0003] This utility model provides a forming device for the inner tube of a noise reducer, which solves the shortcomings of the prior art and addresses the problems of low forming quality of existing inner tubes and the presence of protruding edges or rolled edges on the inner or outer walls, thus having strong practicality.
[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:
[0005] A forming device for the inner tube of a noise reducer includes a base, a pair of pads on the lower wall of the base, an end seat bolted to one end of the base, an mounting plate bolted to the upper end of the end seat, an inner cylinder on the mounting plate, two pairs of rectangular holes parallel to each other in the longitudinal direction on the base, movable blocks movably disposed in the rectangular holes, a movable plate bolted to the upper end of the movable block on the same side, a plurality of connecting arms welded to the movable plate, an inner pressure arc plate welded to the upper end of the connecting arms, a lower moving plate bolted to the lower end of the movable block on the same side, a connecting seat welded to the lower wall of the lower moving plate, a hydraulic cylinder mounted on the connecting seat, and the hydraulic cylinder fixed to the base.
[0006] Furthermore, one end of the inner cylinder is formed with an end post, and one end of the base is provided with a notch. Guide strips are fixed to both sides of the notch by screws. Waist-shaped holes are provided on the guide strips. Movable seats are provided between the guide strips. End support plates are welded on the movable seats and are fitted onto the end post.
[0007] Furthermore, guide rods are threadedly connected to the opposite ends of the movable seat. End caps are provided on the outer ends of the guide rods. Springs and inner pressure plates are sleeved on the guide rods. Insert rods are threadedly connected to both ends of the inner pressure plates. A pair of insertion holes are opened at both ends of the movable seat. Insert rods are inserted into the insertion holes, and guide rods are inserted into the waist-shaped holes.
[0008] Furthermore, multiple grooves are provided on the end face of the mounting plate, and an outward pushing protrusion is provided in the groove. A collar is welded to the outer end of the outward pushing protrusion, and the collar is fitted onto the mounting plate. A pair of lugs are welded to the end seat, and a pull rod is threaded through the lugs. One end of the pull rod is welded to the collar, and a cross plate is welded to the other end of the pull rod.
[0009] The advantages of the above technical solution are:
[0010] This invention utilizes an inner cylinder and an inner pressure arc plate to facilitate bending and straightening of the inner tube's shape by applying pressure to its inner and outer circumferences, thereby improving the forming quality of the inner tube. Simultaneously, when the inner pressure arc plate moves inward to apply pressure to the inner tube, it applies pressure to the rolled edges or protruding edges of each punch through the outer circumference of the inner cylinder and the inner circumference of the inner pressure arc plate, causing these defects to adhere tightly to the outer or inner wall of the inner tube, thus preventing these defects from affecting the quality of the inner tube.
[0011] This utility model features a movable and rotatable end support plate that supports the other end of the inner cylinder to ensure the fit between the inner cylinder and the inner pressure plate. The end support plate can also rotate to facilitate the extraction of the inner tube.
[0012] This utility model facilitates the ejection of the corrected inner tube through the design of a pull rod and an outward push plate. Attached Figure Description
[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.
[0014] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .
[0015] Figure 2 A magnified view of point A is shown.
[0016] Figure 3 A three-dimensional structure of one embodiment is shown. Figure 2 .
[0017] Figure 4 A three-dimensional structural diagram of the internal pressure arc plate is shown.
[0018] Figure 5 A three-dimensional structural diagram of the inner cylinder is shown.
[0019] Figure 6 A three-dimensional structural diagram of the inner tube of the noise reducer is shown. Detailed Implementation
[0020] like Figures 1-5As shown, a molding device for the inner tube of a noise reducer includes a base 1. A pair of pads 10 are provided on the lower wall of the base 1. An end seat 5 is bolted to one end of the base 1. An mounting plate 41 is bolted to the upper end of the end seat 5. An inner cylinder 4 is provided on the mounting plate 41. Two pairs of rectangular holes 12 parallel to each other in the longitudinal direction are opened on the base 1. Movable blocks 22 are movably arranged in the rectangular holes 12. A movable plate 23 is bolted to the upper end of the movable block 22 on the same side. Multiple connecting arms 24 are welded to the movable plate 23. An inner pressure arc plate 25 is welded to the upper end of the connecting arm 24. A lower moving plate 21 is bolted to the lower end of the movable block 22 on the same side. A connecting seat 20 is welded to the lower wall of the lower moving plate 21. A hydraulic cylinder 2 is installed on the connecting seat 20 and fixed to the base 1.
[0021] One end of the inner cylinder 4 is formed with an end post 40, and one end of the base 1 has a notch 11. Guide strips 3 are fixed to both sides of the notch 11 by screws. The guide strips 3 have waist-shaped holes 30. A movable seat 35 is movably arranged between the guide strips 3. An end support plate 36 is welded to the movable seat 35 and is sleeved on the end post 40. The two opposite ends of the movable seat 35 are connected to guide rods 31 by threads. The outer end of the guide rod 31 is provided with an end cap. A spring 32 and an inner pressure plate 33 are sleeved on the guide rod 31. The spring 32 is located between the inner pressure plate 33 and the end cap. The two ends of the inner pressure plate 33 are connected to insert rods 34 by threads. A pair of insertion holes are opened at both ends of the movable seat 35. The insert rods are inserted into the insertion holes, and the guide rods 31 pass through the waist-shaped holes 30.
[0022] Multiple grooves 42 are provided on the end face of the mounting plate 41. An outward push plate 54 is provided in the groove 42. A collar 53 is welded to the outer end of the outward push plate 54. The collar 53 is fitted onto the mounting plate 41. A pair of lugs 50 are welded to the end seat 5. A pull rod 51 is passed through the lugs 50. One end of the pull rod 51 is welded to the collar 53. A cross plate 52 is welded to the other end of the pull rod 51.
[0023] In this embodiment, during operation, the operator places the rolled-up inner tube onto the inner cylinder 4. After insertion, the end support plate 36 is rotated upwards to make it vertical. During rotation, the inner pressure plate 33 is pulled outwards to prevent the insertion rod 34 from interfering with the rotation of the end support plate 36. When the end support plate 36 is rotated to a vertical position, the outward pulling force on the inner pressure plate 33 is released, allowing the inner pressure plate 33 to move inwards by acting on the inner end of the spring 32. The insertion rod 34 is then inserted into the oblong hole 30 and the movable seat 35. At this time, the end support plate 36 is limited by the rotation of the insertion rod 34. Then, the end support plate 36 is moved inwards to insert the end post 40 onto the end support plate 36.
[0024] Then, the hydraulic cylinder 2 is activated. Driven by the hydraulic cylinder 2, the inner pressure arc plate 25 moves inward and its inner wall acts on the outer periphery of the inner tube. The inner tube is straightened and the defects of the protruding edge or rolled edge are treated by the inner push.
[0025] After the operation is completed, first return the inner pressure plate 25 to the initial position, then move the end support plate 36 outward, and when it moves to the end of the waist-shaped hole 30, pull the inner pressure plate 33 outward so that the insertion rod 34 is pulled out of the waist-shaped hole 30. Then rotate the end support plate 36 outward, and then push the pull rod 51 so that the outer push protrusion 54 on it acts on one end of the inner tube, and finally detach the inner tube from the inner cylinder 4.
[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A die for a noise reducer inner tube, characterized by, The base (1) includes a base (1), a pair of pads (10) on the lower wall of the base (1), an end seat (5) is installed at one end of the base (1) by bolts, an mounting plate (41) is installed at the upper end of the end seat (5) by bolts, an inner cylinder (4) is provided on the mounting plate (41), two pairs of rectangular holes (12) parallel to each other in length direction are opened on the base (1), a movable block (22) is movably provided in the rectangular hole (12), a movable plate (23) is installed at the upper end of the movable block (22) on the same side by screws, a plurality of connecting arms (24) are welded on the movable plate (23), an inner pressure arc plate (25) is welded at the upper end of the connecting arm (24), a lower moving plate (21) is installed at the lower end of the movable block (22) on the same side by bolts, a connecting seat (20) is welded on the lower wall of the lower moving plate (21), a hydraulic cylinder (2) is installed on the connecting seat (20), and the hydraulic cylinder (2) is fixed on the base (1).
2. The die set for a noise reducer inner tube according to claim 1, wherein One end of the inner cylinder (4) is formed with an end post (40), and one end of the base (1) is provided with a notch (11). Guide strips (3) are fixed on both sides of the notch (11) by screws. Waist-shaped holes (30) are provided on the guide strips (3). Movable seats (35) are provided between the guide strips (3). End support plates (36) are welded on the movable seats (35). The end support plates (36) are sleeved on the end post (40).
3. The die set for a noise reducer inner tube as claimed in claim 2, wherein The two ends of the movable seat (35) are connected by threads to guide rods (31). The outer end of the guide rod (31) is provided with an end cap. A spring (32) and an inner pressure plate (33) are sleeved on the guide rod (31). The two ends of the inner pressure plate (33) are connected by threads to insert rods (34). The two ends of the movable seat (35) are respectively provided with a pair of insertion holes. The insert rod is inserted into the insertion hole, and the guide rod (31) passes through the waist-shaped hole (30).
4. The die set for a noise reducer inner tube as set forth in claim 1, wherein Multiple grooves (42) are provided on the end face of the mounting plate (41). An outward push plate (54) is provided in the groove (42). A collar (53) is welded to the outer end of the outward push plate (54). The collar (53) is fitted onto the mounting plate (41). A pair of lugs (50) are welded to the end seat (5). A pull rod (51) is threaded through the lugs (50). One end of the pull rod (51) is welded to the collar (53), and the other end of the pull rod (51) is welded to a horizontal plate (52).