Adjustable punching device for microwell plate for silencing unit

Abstract

The utility model relates to the technical field of manufacturing of microwell plates for noise reduction units, in particular to an adjustable punching device for a microwell plate for a noise reduction unit, which comprises a push rod, a connecting rod is arranged on the push rod in a sliding mode, a rotating device is arranged at the other end of the connecting rod, and the end portion of a punching needle fixing column of the microwell plate is arranged in the rotating device. The rotating device comprises a shell, a circular truncated cone and a rotation stopping screw, a cavity is formed in one side of the circular truncated cone, a rotating column is arranged on the other side of the circular truncated cone, and a handle is arranged at the other end of the rotating column. Compared with the prior art, the punching device has the advantages that after the punching needle fixing column is installed, if the punching needle is damaged in the punching process, the punching needle fixing column can be rotated, the punching needle fixing column can be replaced to the face with the intact punching needle on the side face, punching continues, the switching speed is high, and the working efficiency is improved; when all the side faces of the punching needle fixing column are damaged, the whole punching needle fixing column can be replaced, punching needle fixing columns of different models can be installed on the device, microwell plates of different models can be machined conveniently, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing microporous plates for silencer units, in particular to an adjustable punching device for microporous plates for silencer units. Background Art

[0002] As people's requirements for the environment become increasingly higher, the requirements for noise control in industrial production, construction and other fields are becoming more and more stringent. For example, in many products used in production and life, it is necessary to eliminate the noise of equipment such as pumps, motors, and compressors. Microporous plates are commonly used structural components in silencer units. For example, in the patent with announcement number CN 203258809 U and the name of the guide plate for silent air conditioners, multiple microporous plates are arranged in the guide plate to form a silencer cavity. The microporous plates are processed with silencer holes. The silencer cavity and the silencer holes enable the microporous plates to achieve vibration reduction and noise reduction while guiding the airflow. When processing microporous plates, they are usually formed by punching holes in ordinary plates. Since there are multiple silencer holes distributed on the microporous plates, in order to improve the punching efficiency, multiple corresponding punching needles are usually arranged on the punching device. The punching device forms a microporous plate after punching once. When punching multiple times to batch process microporous plates, the punching needles on the punching device may be damaged at any time. The punching needles need to be replaced in time to ensure that the microporous plates that meet the requirements are processed. In the existing technology, it is usually necessary to replace and dismantle the entire plate of punching needles on the punching device, which is a complicated operation and usually takes a long time; or to repair the damaged punching needles, which usually takes a long time, and the consistency of the repaired punching needles is poor, and the quality of the processed microporous plates is easily unqualified. Utility Model Content

[0003] In view of the above technical problems, the purpose of this utility model is to provide an adjustable punching device for a micro-porous plate of a muffler unit.

[0004] The purpose of the present invention is achieved by the following technical solutions. According to the present invention, an adjustable punching device for a micro-porous plate used in a silencer unit includes a push rod, a connecting rod is slidably arranged on the push rod, the other end of the connecting rod is provided with a rotating device, the end of the punch pin fixing column of the micro-porous plate is arranged in the rotating device, the rotating device includes a shell fixed to the connecting rod, a frustum rotatably arranged on the shell, a stop screw threadedly connected to the shell and capable of contacting the outer circumference of the frustum to prevent the frustum from rotating, a cavity is provided on one side of the frustum for inserting the end of the punch pin fixing column and capable of preventing the punch pin fixing column and the frustum from rotating relative to each other, a rotating column rotatably connected to the shell is provided on the other side, and a handle is provided on the other end of the rotating column.

[0005] Furthermore, the stop screw is provided with a stop protrusion at the end facing the cone, and a plurality of stop holes are distributed circumferentially on the outer circumference of the cone. When the cone is rotated to a certain angle, the stop screw can be screwed to insert the stop protrusion into the stop hole.

[0006] Furthermore, the end of the anti-rotation protrusion is provided with a protrusion whose diameter gradually decreases in the protrusion direction, and the bottom of the anti-rotation hole matches the end of the anti-rotation protrusion.

[0007] Furthermore, the handle includes handle columns corresponding to the number of the anti-rotation holes and parallel to the corresponding anti-rotation holes, and the surface of the shell facing the handle is provided with scale lines parallel to the anti-rotation holes.

[0008] Furthermore, the end of the anti-rotation screw facing the truncated cone is provided with rubber, and the rubber can approach and be squeezed on the outer circumferential surface of the truncated cone.

[0009] Furthermore, a sliding hole is opened at the end of the connecting rod, and the push rod slides through the sliding hole. The end of the connecting rod is threadedly connected with a set screw. When the connecting rod slides to a specific position, the set screw is tightened, and the inner end of the set screw can be against the push rod.

[0010] Compared with the prior art, the benefits of the present invention are as follows: after the punch needle fixing column is installed, when punching, if the punch needle is damaged, the punch needle fixing column can be rotated and replaced to the side with intact punch needles on both sides, and punching can be continued. The switching speed is fast and the work efficiency is improved; when all sides of the punch needle fixing column are damaged, the entire punch needle fixing column can be replaced, and the device can install different types of punch needle fixing columns to facilitate the processing of different types of microporous plates, and has a wide range of applications.

[0011] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In addition, in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall schematic diagram of an embodiment of an adjustable punching device for a micro-porous plate used in a silencer unit of the present invention;

[0013] Figure 2 for Figure 1 a cross-sectional view of the rotating device;

[0014] Figure 3 for Figure 1 Schematic diagram of the perspective A in the middle;

[0015] Figure 4 for Figure 2 Schematic diagram of the middle B perspective;

[0016] Figure 5 for Figure 2 Schematic diagram of the middle C perspective;

[0017] Figure 6 for Figure 2 Enlarged schematic diagram of point D in the middle.

[0018] Reference numerals

[0019] 1-Putter,

[0020] 2-connecting rod, 201-set screw,

[0021] 3-rotating device, 301-housing, 302-cylindrical cavity, 303-rotating hole, 304-bearing, 305-stop screw, 306-rotating column, 307-frustum, 308-stop hole, 309-positioning handle, 310-square cavity, 311-positioning scale, 312-cylindrical protrusion, 313-spherical protrusion, 314-spherical groove, 4-punch needle fixing column, 401-punch needle. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0023] like Figures 1 to 6 The figure shows an embodiment of an adjustable micro-perforated plate punching device for a muffler unit according to the present invention. The device comprises a push rod 1, a connecting rod 2, a rotating device 3, a punch pin fixing column 4, and punch pins 401 distributed on the punch pin fixing column 4. The push rod 1 is connected to the punching device's drive mechanism, the output shaft of which is fixedly connected to the push rod 1. Under the action of the drive mechanism, the punching device is driven along the extension direction of the working punch pins 401 to impact the plate to be processed, thereby processing the plate into a micro-perforated plate. The drive mechanism can be a hydraulic cylinder, a pneumatic cylinder, or other device.

[0024] A connecting rod 2 is slidably mounted on the push rod 1, perpendicular to the push rod 1, and slides in the longitudinal direction of the push rod 1. The connecting rod 2 can be fixed to the push rod 1 by sliding to a certain position. In this embodiment, a sliding hole is defined at the end of the connecting rod 2, into which the push rod 1 slides. A set screw 201 is threadedly connected to the end of the connecting rod 2. The threaded hole at the end of the connecting rod 2 extends perpendicularly from the end face to the sliding hole. When the connecting rod 2 slides to a specific position, the set screw 201 is tightened so that the inner end of the set screw 201 abuts against the push rod 1, thereby securing the connecting rod 2. A handle can be provided at the outer end of the set screw 201 to facilitate manual tightening of the set screw 201.

[0025] A rotating device 3 is fixedly provided at the other end of the connecting rod 2, and two connecting rods 2 are slidably provided on the push rod 1, and the rotating devices 3 on the two connecting rods 2 are symmetrically provided. After the two ends of the punching needle fixing column 3 are fixed in the corresponding rotating devices 3, when the driving device drives the push rod 1, the punching needle 401 on the punching needle fixing column 3 can impact the plate to process the plate into a microporous plate. In this embodiment, the cross-sectional shape of the punching needle fixing column 3 is square, and a plurality of punching needles 401 are distributed on the four sides of the punching needle fixing column 3. The shape, size, number, spacing, and distribution position of the punching needles distributed on each side are all the same. After the punching needle 401 on any side is directed toward punching the plate, the microporous plates formed have the same specifications. In other embodiments, the cross-sectional shape of the punch pin fixing column 3 may also be rectangular, as long as the shape, size, number, spacing, and distribution position of the punch pins distributed on each side are the same. The punch pin fixing column 3 may also be a triangular prism or a pentagonal prism, etc. The size and shape of the side of the punch pin fixing column 4 and the size and number of the punch pins 401 can be set according to the width, length, and hole size and number of the microporous plate. By adjusting the distance between the two connecting rods 2, the distance between the two rotating devices 3 can be adjusted, and the punch pin fixing columns 3 of different lengths can be fixed, thereby processing microporous plates of different lengths. The two rotating devices 3 have the same structure and are symmetrically arranged. One of the rotating devices 3 is used as an example for explanation.

[0026] The rotating device 3 includes a housing 301 fixed to the connecting rod 2. A cylindrical cavity 302 is provided on one side of the housing 301. The axis of the cylindrical cavity 302 is parallel to the sliding direction of the connecting rod 2. The cylindrical cavity 302 has an opening on one side and a rotating hole 303 at the bottom that passes through the housing 301.

[0027] A truncated cone 307 is rotatably nested within the cylindrical cavity 302. The axis of rotation of the truncated cone 307 coincides with the axis of the cylindrical cavity 302. A square cavity 310 is provided on one side of the truncated cone 307, which matches the end of the punch pin fixing column 4. Inserting the end of the punch pin fixing column 4 into the square cavity 310 prevents relative rotation between the punch pin fixing column 4 and the truncated cone 307. Adjusting the two connecting rods 2 to appropriate positions allows the corresponding two truncated cones 307 to clamp the punch pin fixing column 4, thereby securing the punch pin fixing column 4 to the truncated cone 307. In other embodiments, the square cavity 310 is adjusted according to the shape of the end of the punch pin fixing column 4. In order to replace and install a punch pin fixing column 4 of another model on the same rotating device 3, a boss that matches the square cavity 310 on the rotating device 3 can be provided on the end of the punch pin fixing column 4.

[0028] A rotating column 306 is vertically set on the other side of the truncated cone 307. The rotating column 306 is rotatably set in the rotating hole 303. In this embodiment, the inner wall of the rotating hole 303 is embedded with a bearing 304, and the rotating column 306 is rotatably connected to the rotating hole 303 through the bearing 304.

[0029] In order to avoid excessive interference between the rotating device 3 and the table where the microporous plate is located, the truncated cone 307 protrudes from the opening of the cylindrical cavity 302. The outer diameter of the truncated cone 307 is relatively small, and the end of the punch fixing column 4 is fixed in the truncated cone 307, so that the punch fixing column 4 is as far away as possible from the part with a larger outer diameter of the main body of the rotating device 3.

[0030] A positioning handle 309 is provided on the outer end of the rotating column 306. Four stop holes 308 are evenly distributed on the outer circumference of the circular table 307. A stop screw 305 is threadedly connected to the outer wall of the housing 301. The stop screw 305 extends from the outer wall of the housing 3 into the cylindrical cavity 302. A cylindrical protrusion 312 is provided on the inner end surface of the stop screw 305. The shape of the cylindrical protrusion 312 matches the stop hole 308. A handle is provided on the outer end of the stop screw 305 to facilitate tightening the stop screw 305. When the circular table 307 is rotated to a certain angle, the cylindrical protrusion 312 of the stop screw 305 can be screwed into the stop hole 308, thereby fixing the angle of the circular table 307 and aligning one side of the punch pin fixing column 4 with the corresponding sheet material. If the punch pin fixing column 4 has multiple side surfaces, a corresponding number of stop holes 308 will be provided. When a stop hole 308 is rotated to a certain angle, the corresponding side surface also rotates to the corresponding angle.

[0031] To facilitate positioning the rotation angle of the truncated table 307 and screwing the stop screw 305 into the stop hole 308, and to prevent the protrusion of the stop screw 305 from abutting against the outer circumference of the truncated table 307 and preventing rotation, two parallel positioning scales 311 are provided on the surface of the housing 301 facing the positioning handle 309. The projection of the stop screw 305 falls between the two positioning scales 311. The positioning handle 309 is shaped like a cross, forming four handle columns, equal in number to the corresponding stop holes 308, and parallel to the axes of the corresponding stop holes 308. When one of the handle columns is rotated until it can be vertically projected between the two positioning scales 311, the stop hole 308 is aligned with the stop screw 305, thereby quickly screwing the cylindrical protrusion 312 of the stop screw 305 into the stop hole 308.

[0032] To prevent the stop hole 308 from not being precisely aligned with the stop screw 305 after the stop hole 308 and the stop screw 305 are positioned using the positioning scale 311, making it difficult to insert the cylindrical protrusion 312 of the stop screw 305 into the stop hole 308, a spherical protrusion 313 is provided at the end of the cylindrical protrusion 312 of the stop screw 305, and a matching spherical groove 314 is provided at the bottom of the stop hole 308. After the stop hole 308 is rotated to the position of the stop screw 305, the stop screw 305 is directly screwed in. The tip of the spherical protrusion 313 first enters the stop hole 308, and under the pressure of the spherical protrusion 313, the frustum 307 is rotated, correcting the angle of the stop hole 308 and allowing the cylindrical protrusion 312 to be fully inserted into the stop hole 308, ensuring that the angle is fixed reliably. In other embodiments, the spherical protrusion 313 can be replaced with a conical protrusion, and the corresponding spherical groove 314 can be replaced with a conical groove. In other embodiments, the cylindrical protrusion 312 may be replaced with protrusions of other shapes, such as a triangular prism protrusion, a pentagonal prism protrusion, or the like, and the anti-rotation hole 308 may be matched with the shape of the corresponding anti-rotation protrusion.

[0033] In other embodiments of the present invention, the positioning handle 309, the stop screw 305, and the stop hole 308 can be set on only one rotating device 3, and the other rotating device 3 does not need to be provided with the handle 309, the stop screw 305, and the stop hole 308, and the punch positioning column 4 can also be fixed after rotating to a certain angle.

[0034] In other embodiments of the present invention, the end of the stop screw 305 is provided with a high-friction rubber. When the angle of the truncated table 307 needs to be fixed, tightening the stop screw 305 squeezes the rubber against the outer circumference of the truncated table 307, thereby fixing the angle of the truncated table 307. This structure allows the punch pin fixing column 4 to be fixed at any angle, allowing the installation of punch pin fixing columns 4 of various shapes, as long as a measuring device is used to ensure that a side of the punch pin fixing column 4 is parallel to the microplate. This structure also allows the positioning handle 309 to be replaced with a conventional handle, eliminating the need for scale marks on the housing 301 and the stop hole 308 on the truncated table 307, simplifying the structure.

[0035] After the punch needle fixing column is installed, when punching, if the punch needle is damaged, the punch needle fixing column can be rotated and replaced until both sides have intact punch needles, and punching can be continued. The switching speed is fast and the work efficiency is improved. When all sides of the punch needle fixing column are damaged, the entire punch needle fixing column can be replaced, and the device can be installed with different types of punch needle fixing columns to facilitate the processing of different types of microplates, and has a wide range of applications.

[0036] The above is only a preferred embodiment of the present invention. Any simple modification, equivalent change and modification made to the above embodiment by any technician familiar with the profession based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An adjustable punching device for a micro-porous plate for a muffler unit, comprising a push rod, characterized in that: A connecting rod is slidably arranged on the push rod, and a rotating device is provided at the other end of the connecting rod. The end of the punch needle fixing column of the microporous plate is arranged in the rotating device. The rotating device includes a shell fixed to the connecting rod, a frustum rotatably arranged on the shell, and a stop screw threadedly connected to the shell and capable of contacting the outer circumference of the frustum to prevent the frustum from rotating. One side of the frustum is provided with a cavity for inserting the end of the punch needle fixing column and capable of preventing the punch needle fixing column and the frustum from rotating relative to each other, and the other side is provided with a rotating column rotatably connected to the shell, and the other end of the rotating column is provided with a handle.

2. The adjustable micro-perforated plate punching device for a muffler unit according to claim 1, characterized in that: The anti-rotation screw is provided with an anti-rotation protrusion at the end facing the truncated cone, and a plurality of anti-rotation holes are distributed circumferentially on the outer circumference of the truncated cone. When the truncated cone is rotated to a certain angle, the anti-rotation protrusion can be inserted into the anti-rotation hole by screwing the anti-rotation screw.

3. The adjustable punching device for a micro-perforated plate for a muffler unit according to claim 2, characterized in that: The end of the anti-rotation protrusion is provided with a protrusion whose diameter gradually decreases in the protrusion direction, and the bottom of the anti-rotation hole matches the end of the anti-rotation protrusion.

4. The adjustable micro-perforated plate punching device for a muffler unit according to claim 2, characterized in that: The handle includes handle columns corresponding to the number of the anti-rotation holes and parallel to the corresponding anti-rotation holes, and the surface of the shell facing the handle is provided with scale lines parallel to the anti-rotation holes.

5. The adjustable micro-perforated plate punching device for a muffler unit according to claim 1, characterized in that: The end of the anti-rotation screw facing the truncated cone is provided with rubber, and the rubber can approach and be squeezed on the outer circumferential surface of the truncated cone.

6. The adjustable micro-perforated plate punching device for a muffler unit according to claim 1, characterized in that: A sliding hole is provided at the end of the connecting rod, and the push rod slides through the sliding hole. The end of the connecting rod is threadedly connected with a set screw. When the connecting rod slides to a specific position, the set screw is tightened, and the inner end of the set screw can be against the push rod.

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