A port expanding device for automobile muffler production

Abstract

The utility model discloses a kind of port diameter expanding devices for automobile muffler production, it is related to the technical field of muffler diameter expansion, including bottom plate and threaded rod, the utility model is set by setting clamping assembly, control second cylinder drives pressing plate to be close to each other can drive arc clamping plate to compress muffler pipe fittings, to clamp and fix muffler pipe fittings, buffering spring cooperation arc clamping plate and second guide rod can play buffering effect, avoid pressing plate direct contact and extrude muffler pipe fittings to cause muffler pipe fittings to be damaged, by setting limit component, arc limit block is close to threaded rod top outside side can be positioned to threaded rod top, clamping assembly is completed to clamp and fix muffler pipe fittings while arc limit block can drive threaded rod simultaneously close, to simplify operation process, it is convenient to place or take out muffler pipe fittings, by setting first cylinder, first cylinder can be conveniently adjusted to the position of muffler pipe fittings to be clamped.

Description

Technical Field

[0001] This utility model relates to the field of muffler diameter expansion technology, and in particular to a port diameter expansion device for automobile muffler production. Background Technology

[0002] A car muffler is a component used to reduce the noise generated by a motor vehicle's engine. Because the length difference between the two pipes is equal to half the wavelength of the sound waves emitted by the car, the two sound waves interfere with each other when they are superimposed, thus reducing the sound intensity and achieving a noise reduction effect. During the production process of car mufflers, an expansion device is usually used to expand the diameter of the muffler pipe fittings, which facilitates the welding between pipes of different diameters.

[0003] As disclosed in the utility model patent application CN221388545U, a pipe diameter expansion device is used to control a second motor to drive a second lead screw to rotate. The second lead screw drives a slider to move, and the slider drives a lower clamping plate and a fixing assembly to move, thereby adjusting the clamping position of the clamping block. The pipe to be expanded is placed on the outer surface of the first lead screw and falls onto the lower clamping plate. The cylinder is controlled to drive the upper clamping plate to move downward to fix the pipe. The first motor is controlled to drive the first lead screw to rotate, thereby driving the L-shaped limiting plate to move and pushing the expansion block to move. The rotation of the first lead screw drives the expansion block to rotate, thereby expanding the diameter of the pipe.

[0004] The existing technology still has the following problems when used:

[0005] The device uses a control cylinder to move the upper clamping plate downwards to cooperate with the lower clamping plate to fix the pipe. If the upper clamping plate moves downwards too far, it can easily squeeze and damage the pipe. When installing the pipe to be expanded or removing the expanded pipe, the device needs to release the limit on the circular plate through the limiting component, which is quite cumbersome to operate. When the insertion rod is inserted into the insertion hole and positioning hole, it is easy to shake up and down or even pop out of the insertion hole and positioning hole. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a port diameter expansion device for automobile muffler production, so as to solve the technical problems mentioned in the background.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a port diameter expansion device for automobile muffler production, comprising a base plate and a threaded rod, wherein the top of the base plate is rotatably connected to the threaded rod via a bearing;

[0008] The clamping assembly is located outside the muffler fitting and can clamp and fix the muffler fitting.

[0009] The limiting component is located above the base plate and can limit the top of the threaded rod.

[0010] The first cylinder is symmetrically arranged above the base plate. The first cylinder can easily adjust the clamping position of the muffler pipe.

[0011] As a preferred embodiment of this utility model, a symmetrical mounting plate is fixedly provided on the top surface of the base plate. The inner side of the mounting plate is fixedly connected to the first cylinder. A servo motor and a first guide rod are fixedly installed on the top surface of the base plate. A first bevel gear is fixedly provided at the output end of the servo motor. A second bevel gear meshes above the first bevel gear. The second bevel gear is penetrated by a threaded rod and fixedly connected to the threaded rod. An expansion block is threadedly connected to the outer side of the threaded rod. The first guide rod penetrates the expansion block and is slidably connected to the expansion block.

[0012] As a preferred technical solution of this utility model, the clamping assembly includes a second cylinder, a pressure plate, an arc-shaped clamping plate, a second guide rod, and a buffer spring. The second cylinder is fixedly installed on the top surface of the output end of the first cylinder, and a pressure plate is fixedly installed at the end of the output end of the second cylinder. Multiple buffer springs are fixedly installed on the inner side of the pressure plate, and an arc-shaped clamping plate is fixedly installed at the other end of the buffer spring. Multiple second guide rods are fixedly installed on the outer side of the arc-shaped clamping plate.

[0013] As a preferred embodiment of this utility model, a T-shaped slider is fixedly provided on the side of the second cylinder near the mounting plate. A T-shaped groove adapted to the T-shaped slider is provided on the inner side of the mounting plate. The T-shaped slider is slidably connected to the mounting plate through the T-shaped groove. A guide hole adapted to the second guide rod is provided through the outer side of the pressure plate. The second guide rod passes through the pressure plate through the guide hole and is slidably connected to the pressure plate.

[0014] As a preferred technical solution of this utility model, the limiting component includes a slide bar, an arc-shaped limiting block and a fixing rod. The fixing rod is fixedly installed at the top of the output end of the second cylinder, the slide bar is installed on the outside of the fixing rod, and the arc-shaped limiting block is fixedly installed on the side of the slide bar that is close to each other.

[0015] As a preferred embodiment of this utility model, the top surface of the slide bar is provided with a through hole for a fixing rod, the fixing rod passes through the through hole and is slidably connected to the slide bar, and the side surface of the mounting plate is provided with a transverse groove for a slide bar, the slide bar passes through the transverse groove and is slidably connected to the mounting plate.

[0016] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0017] This invention utilizes a clamping assembly. A second cylinder drives pressure plates closer together, which in turn causes an arc-shaped clamping plate to press against the muffler fitting, thus clamping and fixing the fitting. A buffer spring, in conjunction with the arc-shaped clamping plate and the second guide rod, provides cushioning, preventing direct contact and compression of the muffler fitting by the pressure plates, which could damage it. A limiting assembly, with an arc-shaped limiting block positioned close to the outer top of the threaded rod, limits the position of the threaded rod. Simultaneously, the clamping assembly clamps and fixes the muffler fitting, while also bringing the arc-shaped limiting block close to the threaded rod, simplifying the operation and facilitating the placement and removal of the muffler fitting. A first cylinder, in conjunction with a T-shaped slider and T-shaped groove, moves the clamping assembly up and down, adjusting the clamping position of the muffler fitting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the main view structure of this utility model;

[0020] Figure 3 This is a top view structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the left view of this utility model;

[0022] The components include: 1. Base plate; 2. Mounting plate; 3. Servo motor; 4. First bevel gear; 5. Second bevel gear; 6. Threaded rod; 7. First guide rod; 8. Expanding block; 9. First cylinder; 10. Second cylinder; 11. Pressure plate; 12. Arc-shaped clamping plate; 13. Second guide rod; 14. Sliding bar; 15. Arc-shaped limiting block; 16. Fixing rod; 17. T-shaped slide groove; 18. Buffer spring. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation are all within the protection scope of this utility model without creative effort.

[0024] Example

[0025] Please refer to Figures 1-4As shown, this utility model provides a port diameter expansion device for automobile muffler production, including a base plate 1 and a threaded rod 6. A symmetrical mounting plate 2 is fixedly installed on the top surface of the base plate 1. A servo motor 3 and a first guide rod 7 are fixedly installed on the top surface of the base plate 1. A first bevel gear 4 is fixedly installed at the output end of the servo motor 3. A second bevel gear 5 meshes above the first bevel gear 4. A threaded rod 6 is inserted through the second bevel gear 5. The second bevel gear 5 and the threaded rod 6 are fixedly connected. The bottom of the threaded rod 6 is rotatably connected to the base plate 1 through a bearing. An expansion block 8 is threadedly connected to the outside of the threaded rod 6. The first guide rod 7 passes through the expansion block 8 and is slidably connected to the expansion block 8. The muffler fitting is placed downwards on the outer surface of the threaded rod 6 and the first guide rod 7. Controlling the servo motor 3 to drive the first bevel gear 4 to rotate can drive the second bevel gear 5 to rotate. The rotation of the second bevel gear 5 drives the threaded rod 6 to rotate. The rotation of the threaded rod 6, in conjunction with the first guide rod 7, drives the expansion block 8 to move upwards, thereby expanding the port diameter of the muffler fitting.

[0026] like Figures 1-4 As shown, a clamping assembly is provided on the outside of the muffler fitting. The clamping assembly consists of a second cylinder 10, a pressure plate 11, an arc-shaped clamping plate 12, a second guide rod 13, and buffer springs 18. The second cylinder 10 is slidably connected to the inner side of the mounting plate 2. A T-shaped slider is fixedly provided on the side of the second cylinder 10 near the mounting plate 2. A T-shaped groove 17 adapted to the T-shaped slider is provided on the inner side of the mounting plate 2. The T-shaped slider is slidably connected to the mounting plate 2 through the T-shaped groove 17. A first cylinder 9 is provided below the second cylinder 10. The side of the first cylinder 9 is fixedly connected to the inner side of the mounting plate 2. The top surface of the output end of the first cylinder 9 is fixedly connected to the second cylinder 10. A pressure plate 11 is fixedly provided at the end of the output end of the second cylinder 10. Multiple buffer springs 18 are fixedly provided on the inner side of the pressure plate 11. An arc-shaped clamping plate 12 is fixedly provided at the other end of the buffer springs 18. Multiple buffer springs 18 are fixedly provided on the outer side of the arc-shaped clamping plate 12. The second guide rod 13 has a guide hole through the outer side of the pressure plate 11, which is adapted to the second guide rod 13. The second guide rod 13 passes through the guide hole and slides through the pressure plate 11. The second guide rod 13 never leaves the pressure plate 11. Controlling the second cylinder 10 to drive the pressure plate 11 to move closer to each other can drive the arc-shaped clamping plate 12, the second guide rod 13 and the buffer spring 18 to move closer to the outer wall of the muffler pipe. When the arc-shaped clamping plate 12 contacts the outer wall of the muffler pipe, the pressure plate 11 continues to move closer to each other, and the buffer spring 18 is compressed. When the compression of the buffer spring 18 reaches its maximum, the pressure plate 11 stops moving. At this time, the arc-shaped clamping plate 12 presses the muffler pipe, thereby clamping and fixing the muffler pipe. The buffer spring 18, together with the arc-shaped clamping plate 12 and the second guide rod 13, can play a buffering role to prevent the pressure plate 11 from directly contacting and squeezing the muffler pipe, which would cause damage to the muffler pipe.

[0027] like Figures 1-4As shown, a limiting assembly is provided above the base plate 1. The limiting assembly consists of a slide bar 14, an arc-shaped limiting block 15, and a fixing rod 16. A fixing rod 16 is fixedly installed at the top of the output end of the second cylinder 10. A slide bar 14 is provided on the outer side of the fixing rod 16. A through hole adapted to the fixing rod 16 is provided through the top surface of the slide bar 14. The fixing rod 16 passes through the through hole and slides through the slide bar 14. A transverse groove adapted to the slide bar 14 is provided through the side of the mounting plate 2. The slide bar 14 passes through the transverse groove and slides through the mounting plate 2. An arc-shaped limiting block 15 is fixedly installed on the side of the slide bars 14 that are close to each other. The arc-shaped limiting block 15 is close to the outer side of the top of the threaded rod 6 and can limit the top of the threaded rod 6 to prevent it from shaking when the top of the threaded rod 6 is too high. The extension of the output end of the second cylinder 10 causes the pressure plate 11 to move closer together, which in turn causes the fixed rod 16 to move closer together. This causes the slide bar 14 and the arc-shaped limiting block 15 to move closer together. When the compression of the buffer spring 18 reaches its maximum, the arc-shaped limiting block 15 is just close to the threaded rod 6, which simplifies the operation of the device and makes it easier to place or remove the muffler fittings. Controlling the first cylinder 9 to drive the second cylinder 10 to move up and down can drive other clamping components to move up and down. The T-shaped slider and the T-shaped slide groove 17 guide the movement of the second cylinder 10, so that the clamping position of the muffler fittings can be adjusted as needed. The movement of the second cylinder 10 causes the fixed rod 16 to move up and down. The fixed rod 16 never disengages from the slide bar 14 during the movement.

[0028] Specific working principle:

[0029] When the device is in use, the output end of the second cylinder 10 retracts, causing the pressure plates 11 to move away from each other until the distance between the pressure plates 11 reaches its maximum. The movement of the pressure plates 11 causes the arc-shaped clamping plate 12, the second guide rod 13, and the buffer spring 18 to move away from each other. Simultaneously, the retraction of the output end of the second cylinder 10 causes the fixing rod 16 to move away from each other, thereby causing the slide bar 14 and the arc-shaped limiting block 15 to move away from each other as well. This facilitates the downward-facing placement of the automotive muffler fitting with the end facing down on the outer surface of the threaded rod 6 and the first guide rod 7. The first cylinder 9 drives the second cylinder 10 to move up and down, which in turn drives other clamping components to move up and down. The T-shaped slider, in conjunction with the T-shaped groove 17, guides the movement of the second cylinder 10, thereby adjusting the clamping position of the muffler fitting as needed. After the position adjustment is completed, controlling the second cylinder 10 to move the pressure plates 11 closer together can move the arc-shaped clamping plate 12, the second guide rod 13, and the buffer spring 18 closer to the outer wall of the muffler fitting. When the arc-shaped clamping plate 12 contacts the outer wall of the muffler fitting, the pressure plates 11 continue to move closer together. Recently, the buffer spring 18 is compressed. When the compression of the buffer spring 18 reaches its maximum, the pressure plate 11 stops moving. At this time, the arc-shaped clamping plate 12 presses against the muffler fitting, thereby clamping and fixing the muffler fitting. The buffer spring 18, together with the arc-shaped clamping plate 12 and the second guide rod 13, can play a buffering role, preventing the pressure plate 11 from directly contacting and squeezing the muffler fitting, which would cause damage to the muffler fitting. The extension of the output end of the second cylinder 10 drives the pressure plates 11 to move closer together, which in turn drives the fixing rods 16 to move closer together, thus... The sliding bar 14 and the arc-shaped limiting block 15 move closer to each other. At the same time, the compression of the buffer spring 18 reaches its maximum and the arc-shaped limiting block 15 is just close to the threaded rod 6, limiting the top of the threaded rod 6 to prevent it from shaking when the top of the threaded rod 6 is too high. The control servo motor 3 drives the first bevel gear 4 to rotate, which in turn drives the second bevel gear 5 to rotate. The rotation of the second bevel gear 5 drives the threaded rod 6 to rotate. The rotation of the threaded rod 6, together with the first guide rod 7, drives the expansion block 8 to move upward, thereby expanding the diameter of the muffler pipe fitting port.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A port diameter expansion device for automobile muffler production, comprising a base plate (1) and a threaded rod (6), wherein the top of the base plate (1) is rotatably connected to the threaded rod (6) via a bearing, characterized in that: The clamping assembly is located outside the muffler fitting and can clamp and fix the muffler fitting. The limiting component is located above the base plate (1) and can limit the top of the threaded rod (6); The first cylinder (9) is symmetrically arranged above the base plate (1). The first cylinder (9) can conveniently adjust the clamping position of the muffler pipe.

2. The port diameter expansion device for automobile muffler production according to claim 1, characterized in that: The top surface of the base plate (1) is fixedly provided with symmetrical mounting plates (2). The inner side of the mounting plates (2) is fixedly connected to the first cylinder (9). The top surface of the base plate (1) is fixedly installed with a servo motor (3) and a first guide rod (7). The output end of the servo motor (3) is fixedly provided with a first bevel gear (4). A second bevel gear (5) meshes above the first bevel gear (4). The second bevel gear (5) is passed through by a threaded rod (6) and fixedly connected to the threaded rod (6). An expansion block (8) is threadedly connected to the outer side of the threaded rod (6). The first guide rod (7) passes through the expansion block (8) and is slidably connected to the expansion block (8).

3. The port diameter expansion device for automobile muffler production according to claim 2, characterized in that: The clamping assembly includes a second cylinder (10), a pressure plate (11), an arc-shaped clamping plate (12), a second guide rod (13), and a buffer spring (18). The second cylinder (10) is fixedly installed on the top surface of the output end of the first cylinder (9). The pressure plate (11) is fixedly installed at the end of the output end of the second cylinder (10). Multiple buffer springs (18) are fixedly installed on the inner side of the pressure plate (11). The arc-shaped clamping plate (12) is fixedly installed at the other end of the buffer spring (18). Multiple second guide rods (13) are fixedly installed on the outer side of the arc-shaped clamping plate (12).

4. The port diameter expansion device for automobile muffler production according to claim 3, characterized in that: The second cylinder (10) is fixedly provided with a T-shaped slider on the side near the mounting plate (2). The mounting plate (2) is provided with a T-shaped groove (17) adapted to the T-shaped slider on the inner side. The T-shaped slider is slidably connected to the mounting plate (2) through the T-shaped groove (17). The pressure plate (11) is provided with a guide hole adapted to the second guide rod (13) through the outer side. The second guide rod (13) passes through the pressure plate (11) through the guide hole and is slidably connected to the pressure plate (11).

5. The port diameter expansion device for automobile muffler production according to claim 4, characterized in that: The limiting assembly includes a slide bar (14), an arc-shaped limiting block (15), and a fixing rod (16). The top of the output end of the second cylinder (10) is fixedly provided with the fixing rod (16). The slide bar (14) is provided on the outside of the fixing rod (16). The arc-shaped limiting block (15) is fixedly provided on the side of the slide bars (14) that are close to each other.

6. The port diameter expansion device for automobile muffler production according to claim 5, characterized in that: The top surface of the slide bar (14) is provided with a through hole adapted to the fixing rod (16). The fixing rod (16) passes through the through hole and is slidably connected to the slide bar (14). The side of the mounting plate (2) is provided with a transverse groove adapted to the slide bar (14). The slide bar (14) passes through the transverse groove and is slidably connected to the mounting plate (2).

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