Pipe pre-dotting device for silencer production

Abstract

The utility model is suitable for muffler technical field provides a kind of pipe fitting pre-punching equipment for muffler production, including support assembly, the support assembly includes bottom plate, the bottom plate top is provided with lower plate, the lower plate top is equipped with blanking assembly, the blanking assembly includes two groups of mounting pieces installed in the bottom plate top, each group The mounting piece is rotatably connected with rotating shaft, and two groups The rotating shaft is fixedly connected with L-shaped plate between, the L-shaped plate both ends are rotatably connected with cylinder, the L-shaped plate one side is provided with inclined plate, the cylinder bottom rotatably connected with connecting piece, the connecting piece one side is provided with support column, the support column top is horizontally provided with top plate, the top plate is opened with through-hole, and pre-punching assembly is arranged in the through-hole along vertical direction. The device solves the clamping complex, unstable blanking and powder accumulation problem in pipe pre-punching, achieves the technical effect that pre-punching is efficient and blanking is stable.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and more specifically, it relates to a pre-marking device for pipe fittings used in silencer production. Background Technology

[0002] As a crucial component of the engine exhaust system, the automotive muffler typically contains multiple metal tubes of varying lengths and specifications. These tubes require precise pre-marking according to design requirements and are then assembled one by one. To meet the demands of mass production and standardization, the tube processing usually employs automated tube pre-marking equipment. This mechanical device pre-marks the raw metal tubes to the specified lengths before proceeding to subsequent processes such as punching, expansion, and welding. Therefore, tube pre-marking equipment plays a fundamental and critical role in muffler manufacturing.

[0003] However, before pre-marking the automotive muffler, small-diameter pre-marking is required to determine the location of the points. When performing small-diameter pre-marking, a small-diameter pre-marking device is typically used to drill shallow holes in the pipe surface. Existing pipe pre-marking and drilling equipment generally suffers from complex structures and low automation, especially in the processes of drilling shallow holes and unloading pipe materials. As shown in patent CN212218629U, traditional equipment often requires clamping both ends of the pipe for fixation before drilling can be performed. This is not only structurally complex but also has poor adaptability to pipe diameters and lengths; as the pipe diameter increases, the clamping device also needs further adjustment, thus limiting its applicability. Furthermore, the unloading and conveying processes mostly rely on belt conveyors or are actively driven by the clamping mechanism. This method easily causes friction between the pipe surface and the conveying structure; and waste material is easily generated during the pre-marking process. When this waste material falls onto the conveyor belt and is rubbed, it easily scratches the pipe surface, making it difficult to meet the requirements of continuous and efficient processing.

[0004] Therefore, based on the above problems, this application proposes a pre-marking device for pipe fittings used in the production of silencers. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pre-marking device for pipe fittings in the production of silencers.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pre-marking device for pipe fittings used in the production of mufflers includes a support assembly. The support assembly includes a base plate, a lower plate on top of the base plate, and a feeding assembly on top of the lower plate. The feeding assembly includes two sets of mounting parts mounted on top of the lower plate. Each set of mounting parts is rotatably connected to a rotating shaft. An L-shaped plate is fixedly connected between the two sets of rotating shafts. Cylinders are rotatably connected to both ends of the L-shaped plate. An inclined plate is provided on one side of the L-shaped plate. A connecting piece is rotatably connected to the bottom of the cylinder. A support column is provided on one side of the connecting piece. A top plate is horizontally provided on top of the support column. A through hole is provided on the top plate, and a pre-marking assembly is provided vertically at the through hole.

[0008] The present invention is further configured such that: the L-shaped plate is configured as an L-shaped structure, the L-shaped plate is provided with a plurality of rectangular holes, and the holes of the L-shaped plate are rotatably connected to a rotating roller.

[0009] The present invention is further configured such that the cylinder output end is connected to one end of the right-angle side of the rotating shaft.

[0010] The present invention is further configured such that the inclined plate is a cuboid structure and is inclined.

[0011] The present invention is further configured such that: each end of the inclined plate has a set of horizontal cylinders, the horizontal cylinders are horizontally arranged, and the output end of the horizontal cylinders is connected to a support module, the support module being configured as a triangular structure.

[0012] The present invention is further configured such that: the pre-marking component includes a support member, the support member is configured as a U-shaped structure, a longitudinal cylinder is installed on the top of the support member, and the output end of the longitudinal cylinder passes through the support member.

[0013] The present invention is further configured such that: a mounting plate is connected to the bottom of the longitudinal cylinder, and a pre-marking module is connected to the bottom of the mounting plate, the shape of the pre-marking module being adapted to the shape of the L-shaped plate.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. The L-shaped plate is designed as a rotatable structure, enabling pipe conveying, pre-marking support, and unloading. During transportation, the L-shaped plate initially forms a 35° angle with the ground at both ends, which, together with the rotating rollers at the top, supports and assists in the rolling of the pipe, ensuring smooth pipe conveying and positioning. During the pre-marking stage, a stable horizontal support area is formed in the middle of the L-shaped plate, providing a reliable pre-marking reference surface for the pre-marking module. After pre-marking is completed, the L-shaped plate is tilted around the rotating axis by a cylinder, directly forming a unloading slope to guide the pipe smoothly down to the inclined plate to complete the unloading process.

[0016] 2. The dynamic coordination between the support module and the L-shaped plate effectively improves the stability of the unloading process. As the L-shaped plate rotates from the pre-marked position to the unloading position, the support module retracts synchronously under the drive of the horizontal cylinder. The inclined side fits against the lower surface of the L-shaped plate to provide support, preventing swaying or vibration caused by its own weight or inertia. This helps the pipe to slide smoothly after pre-marking, reduces the risk of jamming or damage, and improves the stability and service life of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a pre-marking device for pipe fittings used in the production of silencers according to this utility model.

[0018] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle.

[0019] Figure 3 This is a schematic diagram of the L-shaped plate in this utility model.

[0020] Figure 4 for Figure 3 A magnified view of a portion of region B in the middle.

[0021] Figure 5 This is a schematic diagram showing the material feeding state of a pre-marking device for pipe fittings used in the production of a silencer according to this utility model.

[0022] Figure 6 This is a schematic diagram of the pre-marking component in this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Support assembly; 11. Base plate; 12. Support column; 13. Top plate; 14. Lower plate; 2. Feeding assembly; 21. Mounting component; 22. Connecting component; 23. Cylinder; 24. Rotating shaft; 25. L-shaped plate; 251. Rotating roller; 26. Inclined plate; 27. Horizontal cylinder; 28. Support module; 3. Pre-marking assembly; 31. Support component; 32. Longitudinal cylinder; 33. Mounting plate; 34. Pre-marking module; 4. Clamping assembly. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] Example 1, please refer to Figure 1-6 The present invention provides the following technical solution:

[0027] Specifically, it refers to a pre-marking device for pipe fittings used in the production of silencers, including a support assembly 1. The support assembly 1 includes a base plate 11, a lower plate 14 is provided on the top of the base plate 11, a feeding assembly 2 is installed on the top of the lower plate 14, two sets of support columns 12 are respectively provided on both sides of the lower plate 14, a top plate 13 is horizontally provided on the top of the two sets of support columns 12, a clamping assembly 4 is provided on one side of the top plate 13, a through hole is provided on the top plate 13, and a pre-marking assembly 3 is provided vertically at the through hole.

[0028] The unloading assembly 2 includes two sets of mounting members 21 installed on the top of the lower plate 14. Each set of mounting members 21 has a rotating shaft 24 rotatably connected to its upper end. The rotating shaft 24 is rotatably connected to the hollow top of the mounting member 21 and can rotate relative to the mounting member 21. An L-shaped plate 25 is fixedly connected between the two sets of rotating shafts 24. The L-shaped plate 25 has an "L" shape, and the tube can be placed on top of the L-shaped plate for pre-marking and unloading. Cylinders 23 are rotatably connected to both ends of the L-shaped plate 25, and the cylinders 23 drive the L-shaped plate 25 and the rotating shaft 24 to swing around the mounting member 21. When the L-shaped plate 25 is open upwards, the pre-marking assembly 3 can pre-mark the tube placed on the L-shaped plate 25. When the L-shaped plate 25 is open to the side and tilted downwards, the pre-marked tube can be unloaded through the L-shaped plate 25.

[0029] The bottom of the cylinder 23 is rotatably connected to the top of the mounting component 21 via a connector 22, allowing the cylinder 23 to swing relative to the mounting component 21. When the piston rod of the cylinder 23 extends or retracts, due to the rotatable connection between the bottom of the cylinder 23 and the mounting component 21, the cylinder 23 can swing at a certain angle in the vertical direction around the axis of the connector 22, simultaneously causing the L-shaped plate 25 to swing as well. The output end of the cylinder 23 is rotatably connected to one end of the right-angled side of the L-shaped plate 25. By pushing with the cylinder 23, the L-shaped plate 25 can be rotated, thereby achieving pre-marking and unloading of the tube.

[0030] Furthermore, the L-shaped plate 25 is uniformly provided with several sets of rectangular holes along its length. Each set of holes is rotatably connected to a rotating roller 251. The rotating roller 251 is axially arranged along the surface of the L-shaped plate 25. By setting the rotating roller 251, it can be ensured that when the tube is conveyed onto the L-shaped plate 25 by an external conveyor, the tube will not rub against the surface of the L-shaped plate 25, thus preventing damage to the tube. The tube can be conveyed by the rotating roller 251. In addition, since the surface of the rotating roller 251 in the feeding assembly is higher than the upper surface of the L-shaped plate 25, and the rotating roller 251 is located at the through hole position of the L-shaped plate 25, there is a gap structure between the two. The metal powder generated during the pre-dotting process can naturally fall along the gap between the rotating roller 251 and the through hole, or scatter onto the surface of the L-shaped plate 25 and then slide off, effectively avoiding the accumulation of metal powder in the support area, thereby preventing the metal powder from scratching the tube surface.

[0031] One side of the L-shaped plate 25 is provided with an inclined plate 26. The inclined plate 26 is a rectangular structure and is installed on the L-shaped plate 25 at a certain angle, with the inclined direction facing the discharge port. It is used to guide the pre-marked tube to slide down for discharge. A set of horizontal cylinders 27 are respectively provided at both ends of the inclined plate 26. The horizontal cylinders 27 are horizontally positioned and can drive the support module 28 to move in the horizontal direction. The support module 28 is set with a triangular structure and is used to support and limit the L-shaped plate 25 during operation. When the support module 28 supports the L-shaped plate 25, the top surface of the support module 28 abuts against the side of the L-shaped plate 25.

[0032] Specifically, when the pipe is pre-marked, the central axis of the L-shaped plate 25 is horizontally positioned on the ground, and the two end plates of the L-shaped plate 25 are respectively set at 45 degrees to the ground. The pipe is placed on top of the L-shaped plate 25, and the pre-marking component 3 is used to pre-mark the pipe. In this state, the L-shaped plate 25 remains stationary, the cylinder 23 is in a retracted state, and the support module 28 is pushed to a preset position by the horizontal cylinder 27, which provides support and limit for the L-shaped plate 25. When the pipe is pre-marked and ready for unloading, the cylinder 23 pushes the L-shaped plate 25 to rotate, causing the L-shaped plate 25 to tilt towards the unloading position. At the same time, the horizontal cylinder 27 retracts, causing the support module 28 to retract, so that the inclined side of the support module 28 abuts against the L-shaped plate 25, ensuring the stability of the unloading. The pre-marked pipe slides down from the inclined plate 26.

[0033] The pre-marking assembly 3 includes a support member 31, which is configured as a U-shaped structure and installed on the top of the top plate 13. A longitudinal cylinder 32 is installed on the top of the support member 31. The output end of the longitudinal cylinder 32 passes through the support member 31 downward and extends and retracts in the vertical direction. The output end of the longitudinal cylinder 32 passes through the through hole of the top plate 13.

[0034] The output end of the longitudinal cylinder 32 is connected to a mounting plate 33. The mounting plate 33 is set in a horizontal direction and is set in a rectangular structure. A pre-marking module 34 is fixedly connected to the bottom of the mounting plate 33 for performing pre-marking operation on the pipe. The pre-marking module 34 consists of a drill bit and a pre-marking motor. When the pre-marking module 34 performs pre-marking, the clamping module 4 moves down and the two bottom surfaces of the clamping module 4 contact the pipe wall for clamping. Then the pre-marking module moves down 34 to pre-mark the pipe placed on the L-shaped plate 25.

[0035] Specifically, during the pre-marking operation, the pipe to be marked is placed stably on top of the L-shaped plate 25. Since the middle of the L-shaped plate 25 is set in a horizontal position, a reliable support base can be formed. Subsequently, the longitudinal cylinder 32 is activated, driving its piston rod to extend downward, which in turn drives the mounting plate 33 and the pre-marking module 34 to press down vertically, so that the drill bit at the bottom of the pre-marking module 34 contacts the pipe and gradually completes the pre-marking process. After the pre-marking is completed, the longitudinal cylinder 32 is reset, and the pre-marking module 34 rises with the mounting plate 33 to the initial position, preparing for the next pre-marking operation.

[0036] The working principle of the pre-marking device for pipe fittings used in the production of silencers provided by this utility model is as follows:

[0037] See Figure 1-6 The tube is conveyed to the top of the L-shaped plate 25 by the external conveying component. At this time, the two end plates of the L-shaped plate 25 are at a 45-degree angle to the ground. It is conveyed by the rotating roller 251. When it is conveyed to the appropriate position, the tube is pre-marked. The longitudinal cylinder 32 is started, driving its piston rod to extend downward, which drives the mounting plate 33 and the pre-marking module 34 to press down vertically, so that the pre-marking module 34 contacts the tube and gradually completes the pre-marking process.

[0038] After the pipe is pre-marked, the cylinder 23 pushes the L-shaped plate 25 to rotate, causing the L-shaped plate 25 to tilt to the material feeding position. At the same time, the horizontal cylinder 27 retracts, causing the support module 28 to retract, so that the inclined side of the support module 28 abuts against the L-shaped plate 25, ensuring the stability of the material feeding. The pre-marked pipe slides down from the inclined plate 26.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pre-marking device for pipe fittings used in the production of silencers, characterized in that: The system includes a support assembly (1), which includes a base plate (11). A lower plate (14) is provided on the top of the base plate (11). A feeding assembly (2) is installed on the top of the lower plate (14). The feeding assembly (2) includes two sets of mounting parts (21) installed on the top of the lower plate (14). A rotating shaft (24) is rotatably connected to each set of mounting parts (21). An L-shaped plate (25) is fixedly connected between the two sets of rotating shafts (24). A cylinder (23) is rotatably connected to both ends of the L-shaped plate (25). An inclined plate (26) is provided on one side of the L-shaped plate (25). A connector (22) is rotatably connected to the bottom of the cylinder (23). A support column (12) is provided on one side of the connector (22). A top plate (13) is horizontally provided on the top of the support column (12). A through hole is provided on the top plate (13). A pre-marking assembly (3) is provided vertically at the through hole.

2. The pre-marking equipment for pipe fittings used in the production of silencers according to claim 1, characterized in that: The L-shaped plate (25) is configured as an L-shaped structure, and several sets of rectangular holes are provided on the L-shaped plate (25). Rotating rollers (251) are rotatably connected to the holes of the L-shaped plate (25).

3. The pre-marking equipment for pipe fittings used in the production of silencers according to claim 1, characterized in that: The output end of the cylinder (23) is connected to one end of the right-angle side of the rotating shaft (24).

4. The pre-marking equipment for pipe fittings used in the production of silencers according to claim 1, characterized in that: The inclined plate (26) is configured as a cuboid structure and is inclined.

5. A pre-marking device for pipe fittings used in the production of silencers according to claim 4, characterized in that: At each end of the inclined plate (26) there is a set of horizontal cylinders (27), the horizontal cylinders (27) are set horizontally, and the output end of the horizontal cylinders (27) is connected to a support module (28), the support module (28) is set as a triangular structure.

6. The pre-marking equipment for pipe fittings used in the production of silencers according to claim 1, characterized in that: The pre-marking component (3) includes a support member (31), which is configured as a U-shaped structure. A longitudinal cylinder (32) is installed on the top of the support member (31), and the output end of the longitudinal cylinder (32) passes through the support member (31).

7. A pre-marking device for pipe fittings used in the production of silencers according to claim 6, characterized in that: The bottom of the longitudinal cylinder (32) is connected to a mounting plate (33), and the bottom of the mounting plate (33) is connected to a pre-marking module (34), the shape of which is adapted to the shape of the L-shaped plate (25).

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