Multipurpose silencer testing fixture

Abstract

The utility model relates to the technical field of silencer testing fixtures, and discloses a multipurpose silencer testing fixture, which comprises a basic rack and a workpiece, air outlets are arranged on two sides of the workpiece, an air inlet is arranged at the front end of the workpiece, and a testing fixture reference platform is fixedly mounted at the top of the basic rack. Detection limiters are installed on the two sides of the top of the detection tool reference platform, the two detection limiters form a clamping limiting space, and a workpiece is placed in the clamping limiting space. According to the multipurpose silencer testing fixture provided by the utility model, the three size detection assemblies and the three air tightness detection assemblies arranged in the multipurpose silencer testing fixture can be alternately used, and size and geometric tolerance detection and air tightness detection are respectively carried out on a workpiece, so that a plurality of detection requirements in actual processing are fully met; the multipurpose testing fixture can detect the size and the shape and position size of a product, can also carry out airtightness detection, can realize process combination, improves the detection efficiency, saves the manufacturing cost, and fully improves the practicality of the whole device.

Description

Technical Field

[0001] The utility model relates to the technical field of muffler inspection tools, in particular to a multi-purpose muffler inspection tool. Background Art

[0002] A muffler refers to an air flow duct that transmits noise. It can use noise reduction devices such as pipes and elbows with sound-absorbing linings, or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance to attenuate or reflect the noise in the pipe. It is widely used in industries such as automobile manufacturing.

[0003] At present, in the production and inspection process of mufflers, researchers in related fields have developed targeted inspection fixtures. For example, the patent document with application number 202321767758.9 proposes "an exhaust pipe muffler inspection fixture, characterized in that it includes a inspection fixture bottom plate, on which a vertical plate, a first support seat, a second support seat and a detection seat are arranged in a line, the vertical plate is arranged perpendicular to the inspection fixture bottom plate, and a positioning block is inlaid on the vertical plate, the positioning block protrudes to one side of the first support seat, and a plurality of mounting holes are distributed around the vertical plate on the outer periphery of the positioning block, the top surface of the first support seat has a concave first arc-shaped support surface, and the top surface of the second support seat has a concave second arc-shaped support surface, and a horizontally movable detection block is arranged on the detection seat, and the front end of the detection block in the movement direction is a cylindrical boss". After implementation, "the position of the connection end of the muffler is detected by simulated installation, and the detection accuracy is high, and the quick-clamp detection block is convenient for detection, saving time and effort".

[0004] From the technical solutions disclosed in the above-mentioned prior art, the main consideration is the installation accuracy of the muffler and related structures. However, in reality, we should also consider the sealing problem of the muffler itself, because in the actual production process, the muffler still has defective air leakage. Secondly, as a pipeline structure, the connection between its internal and related structures should also be the focus of inspection, because if a large connection gap appears after the interface is connected, it will also have a great impact on the use effect of the muffler. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a multi-purpose muffler inspection tool, which solves the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solutions: a multi-purpose muffler inspection tool, comprising a basic stand and a workpiece, both sides of the workpiece are provided with air outlets, and the front end of the workpiece is provided with an air inlet, a inspection tool reference platform is fixedly installed on the top of the basic stand, both sides of the top of the inspection tool reference platform are provided with detection limiters, and two detection limiters form a clamping limit space, and the workpiece is placed inside the clamping limit space;

[0007] An air valve switch is installed on the top of the inspection fixture reference platform, and multifunctional inspection fixtures are arranged outside the two sides and the front end of the workpiece. The multifunctional inspection fixture includes a supporting base and a size detection component and an air tightness detection component installed on the top of the supporting base, and a slide rail and a locking component are respectively arranged at the bottom of the supporting base.

[0008] The two detection limiters are composed of a limit sleeve and a movable locking sleeve. Combination grooves are provided in the front and rear ends of the limit sleeve. The rear end of the movable locking sleeve is sleeved in the combination groove at the rear end of the limit sleeve through a pin shaft. The front end of the movable locking sleeve is made of magnet material and is rotatably supported and clamped in the combination groove at the front end of the limit sleeve with a pin shaft as a rotating support. The front ends of the two movable locking sleeves are fixedly connected with handles. The two detection limiters provide a sleeve limit space for the workpiece during the detection process to ensure the stability of the workpiece during the detection process.

[0009] The inner side of the bottom of the support base is clamped with one end of the slide rail, the bottom of the slide rail is fixedly connected to the top surface of the inspection fixture reference platform, and a clearance groove is opened inside the side of the support base, and the slide rail guides and offsets the displacement adjustment of the support base.

[0010] The locking assembly comprises a locking plate, a locking plate, and an auxiliary handle. A plurality of limit grooves are provided on the top of the locking plate, and the bottom of the locking plate is fixedly mounted on the top of the inspection fixture reference platform. One end of the locking plate is sleeved in the clearance groove through a pin shaft, and the other end of the locking plate is fixedly connected to one end of the auxiliary handle. The middle part of the locking plate is clamped in a corresponding limit groove. The locking assembly provides a limit support for the support base after displacement adjustment to ensure the stability of the support base after adjustment.

[0011] The dimension detection assembly comprises a first support sleeve, a guide column, a detection ring, a detection head, a tolerance band mark and a first handle, the bottom of the first support sleeve is fixedly mounted on the top of the support base, a mounting hole is provided on the top of the first support sleeve, the detection ring is mounted on the top of the first support sleeve and aligned with the mounting hole, one end of the guide column respectively passes through the detection ring and the mounting hole and extends to the outside of the first support sleeve, and the terminal end of the guide column is fixedly connected to one end of the first handle, and the guide column is fixedly mounted on the terminal end of the other end of the guide column. The dimension detection assembly can perform set detection on the corresponding interface structure on the workpiece in an automated manner, thereby optimizing the operational convenience of subsequent dimension detection.

[0012] Preferably, the tolerance band mark is provided on the surface of one end of the first supporting sleeve plate, and the tolerance band mark is used as a detection mark, thereby facilitating detection personnel to identify detection results.

[0013] The airtightness detection component includes a second support sleeve, a cylinder and a silicone sealing plug. The bottom of the second support sleeve is fixedly installed on the top of the support base, the cylinder is installed on the top of the second support sleeve, and the output end of the cylinder passes through the top structure of the second support sleeve and is transmission-connected to one end of the silicone sealing plug. The airtightness detection component can cover and seal the corresponding interface structure on the workpiece in an automated manner, thereby optimizing the operational convenience of subsequent airtightness detection.

[0014] A silicone sealing plug located at the front end of the workpiece is provided with an air filling hole capable of supplying air to the air inlet at the front end of the workpiece. The air filling hole serves as a transition channel, providing structural conditions for the subsequent existing technical equipment involved in air tightness detection to be connected with the workpiece for detection.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The multi-purpose muffler inspection fixture proposed by the utility model has three size inspection components and three air tightness inspection components arranged inside which can be used alternately to perform size and shape and position tolerance inspection and airtightness inspection on the workpiece respectively, fully meeting multiple inspection requirements in actual processing.

[0017] 2. The multi-purpose inspection tool proposed in the utility model can not only detect the product size and shape and position size, but also perform air tightness inspection, thereby realizing process integration to improve inspection efficiency, save manufacturing costs, and fully enhance the practicality of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a left side schematic diagram of a workpiece to be tested of the structure of the utility model;

[0020] Figure 3 It is a right side view schematic diagram of a workpiece to be tested of the structure of the utility model;

[0021] Figure 4 It is an enlarged schematic diagram of the structure detection limiter of the utility model;

[0022] Figure 5 It is a top view schematic diagram of the structural dimension detection component of the utility model;

[0023] Figure 6 It is a top view schematic diagram of the structural air tightness detection assembly of the utility model;

[0024] Figure 7 It is an enlarged schematic diagram of the structural guide column of the utility model.

[0025] In the figure: 1. basic stand; 2. workpiece; 3. inspection fixture reference platform; 4. detection limiter; 41. limit sleeve; 42. movable locking sleeve; 5. multifunctional inspection fixture; 6. slide rail; 7. locking assembly; 71. locking plate; 72. locking plate; 73. auxiliary handle; 8. air valve switch; 9. support base; 10. dimension detection assembly; 101. first support sleeve; 102. guide column; 103. detection ring; 104. detection head; 105. tolerance band mark; 106. first handle; 11. air tightness detection assembly; 111. second support sleeve; 112. cylinder; 113. silicone sealing plug; 12. inflation hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7 A multi-purpose muffler inspection fixture comprises a basic stand 1 and a workpiece 2. Air outlets are arranged on both sides of the workpiece 2, and an air inlet is arranged at the front end of the workpiece 2. A inspection fixture reference platform 3 is fixedly installed on the top of the basic stand 1. Detection limiters 4 are installed on both sides of the top of the inspection fixture reference platform 3, and two detection limiters 4 form a clamping limit space, and the workpiece 2 is placed inside the clamping limit space;

[0028] The two detection limiters 4 are composed of a limit sleeve 41 and a movable locking sleeve 42. Combination grooves are provided in the front and rear ends of the limit sleeve 41. The rear end of the movable locking sleeve 42 is sleeved in the combination groove at the rear end of the limit sleeve 41 through a pin shaft. The front end of the movable locking sleeve 42 is made of a magnet and is rotatably supported and clamped in the combination groove at the front end of the limit sleeve 41 by a pin shaft. The front ends of the two movable locking sleeves 42 are fixedly connected with handles. The two detection limiters 4 provide a set limit space for the workpiece 2 during the detection process to ensure the stability of the workpiece 2 during the detection process.

[0029] An air valve switch 8 is installed on the top of the gauge reference platform 3, and multifunctional gauges 5 are arranged outside the two sides and the front end of the workpiece 2. The multifunctional gauge 5 includes a support base 9 and a size detection component 10 and an air tightness detection component 11 installed on the top of the support base 9. The bottom of the support base 9 is respectively provided with a slide rail 6 and a locking component 7. The inner side of the bottom of the support base 9 is clamped with one end of the slide rail 6. The bottom of the slide rail 6 is fixedly connected to the top surface of the gauge reference platform 3. A clearance groove is opened inside the side of the support base 9. The slide rail 6 guides and constrains the displacement adjustment of the support base 9.

[0030] The locking assembly 7 includes a locking plate 71, a locking plate 72, and an auxiliary handle 73. The top of the locking plate 71 is provided with a plurality of limit grooves, and the bottom of the locking plate 71 is fixedly mounted on the top of the gauge reference platform 3. One end of the locking plate 72 is sleeved in the inner part of the give way groove through a pin shaft, and the other end of the locking plate 72 is fixedly connected to one end of the auxiliary handle 73. The middle part of the locking plate 72 is clamped in a corresponding limit groove. The locking assembly 7 provides a limit support for the support base 9 after the displacement adjustment, so as to ensure the stability of the support base 9 after the adjustment.

[0031] The dimension detection assembly 10 includes a first support sleeve 101, a guide column 102, a detection ring 103, a detection head 104, a tolerance band mark 105 and a first handle 106. The bottom of the first support sleeve 101 is fixedly mounted on the top of the support base 9. A mounting hole is provided on the top of the first support sleeve 101. The detection ring 103 is mounted on the top of the first support sleeve 101 and aligned with the mounting hole. One end of the guide column 102 passes through the detection ring 103 and the mounting hole and extends to the outside of the first support sleeve 101. The end of the guide column 102 is fixedly connected to one end of the first handle 106. The guide column 102 is fixedly mounted on the end of the other end of the guide column 102. The dimension detection assembly 10 can perform set detection on the corresponding interface structure on the workpiece 2 in an automated operation manner, thereby optimizing the convenience of subsequent dimension detection. The tolerance band mark 105 is provided on the surface of one end of the first support sleeve 101, and the tolerance band mark 105 is used as a detection mark, thereby facilitating the detection personnel to identify the detection results.

[0032] The airtightness detection component 11 includes a second support sleeve 111, a cylinder 112 and a silicone sealing plug 113. The bottom of the second support sleeve 111 is fixedly installed on the top of the support base 9, the cylinder 112 is installed on the top of the second support sleeve 111, and the output end of the cylinder 112 passes through the top structure of the second support sleeve 111 and is transmission-connected to one end of the silicone sealing plug 113. The airtightness detection component 11 can cover and seal the corresponding interface structure on the workpiece 2 in an automated manner, thereby optimizing the convenience of subsequent airtightness detection. A silicone sealing plug 113 located at the front end of the workpiece 2 is provided with an inflation hole 12 that can deliver air to the air inlet at the front end of the workpiece 2. The inflation hole 12 serves as a transition channel, providing structural conditions for the existing technical equipment involved in subsequent airtightness detection to be connected to the workpiece 2 for detection.

[0033] Working principle:

[0034] For the workpiece 2 to be inspected, the two ends of the workpiece 2 are respectively inserted into the two limit sleeves 41, and then the two movable locking sleeves 42 are turned over, so that the front end of the movable locking sleeve 42 is rotated and clamped in the combination groove at the front end of the limit sleeve 41 with the pin shaft as a rotation support. The limit sleeve 41 and the movable locking sleeve 42 are magnetically connected after clamping, and the other movable locking sleeve 42 is also operated according to the above steps;

[0035] After the workpiece 2 is stably installed, the workpiece 2 needs to be inspected for size, that is, the support bases 9 in the three multifunctional inspection fixtures 5 are moved, so that the support bases 9 drive their corresponding size inspection components 10 to move under the guidance of the corresponding slide rails 6 until the size inspection components 10 are aligned with the corresponding interfaces on the workpiece 2. Thus, according to the above steps, the size inspection components 10 in the three multifunctional inspection fixtures 5 are respectively aligned with the two air inlets and one air outlet on the workpiece 2;

[0036] After the three supporting bases 9 have finished moving, the three auxiliary handles 73 that move synchronously with the three supporting bases 9 will be aligned with a limiting groove on the three locking plates 71 respectively, and then the three locking plates 72 will be flipped over in sequence so that the middle parts of the three locking plates 72 are respectively engaged in the corresponding limiting grooves;

[0037] After the work preparations before inspection are completed, use the first handle 106 in a size detection component 10 to push the guide column 102 and the detection head 104, so that the two move forward under the support of the first support sleeve 101, until the detection head 104 is inserted into the air inlet or outlet on the workpiece 2, until it is completely fitted with the measured element of the workpiece, and then observe the position of the tolerance band mark 105. When the tolerance band mark 105 is completely blocked by the detection ring 103 or the tolerance band mark 105 is completely exposed, it indicates that the workpiece size is unqualified. When the detection ring 103 blocks part of the tolerance band mark 105, it indicates that the workpiece size is qualified. Then, the remaining two size detection components 10 are also operated according to the above steps.

[0038] When the workpiece 2 needs to be tested for air tightness, the support bases 9 in the three multifunctional inspection fixtures 5 are moved so that the support bases 9 drive their corresponding air tightness detection components 11 to move under the guidance of the corresponding slide rails 6 until the air tightness detection components 11 are aligned with the corresponding interfaces on the workpiece 2. Thus, according to the above steps, the air tightness detection components 11 in the three multifunctional inspection fixtures 5 are aligned with the two air inlets and one air outlet on the workpiece 2 in sequence;

[0039] After the three supporting bases 9 have finished moving, the three auxiliary handles 73 that move synchronously with the three supporting bases 9 will be aligned with a limiting groove on the three locking plates 71 respectively, and then the three locking plates 72 will be flipped over in sequence so that the middle parts of the three locking plates 72 are respectively engaged in the corresponding limiting grooves;

[0040] After the work preparation before the test is completed, operate one cylinder 112, and the output end of the cylinder 112 pushes the silicone sealing plug 113 forward until the silicone sealing plug 113 covers and seals the corresponding air inlet or air outlet of the workpiece 2. Then, the other two cylinders 112 and the silicone sealing plug 113 are also operated according to the above steps until the two air inlets and air outlets on the workpiece 2 are covered and sealed, and then the inflation switch of the existing air tightness detector is started, and then the compressed air is filled into the workpiece 2 from the inflation hole 12 and the corresponding silicone sealing plug 113 to perform air tightness testing;

[0041] The air tightness detector automatically completes the detection and releases the pressure. After the detection is completed, the cylinder 112 is operated, and the output end of the cylinder 112 drives the silicone sealing plug 113 to reset and move.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the fill pattern is only for distinguishing the layers, without any other limitation.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-purpose muffler inspection tool, comprising a base frame (1) and a workpiece (2), wherein both sides of the workpiece (2) are provided with air outlets, and the front end of the workpiece (2) is provided with an air inlet, characterized in that: A gauge reference platform (3) is fixedly mounted on the top of the base frame (1), detection limiters (4) are mounted on both sides of the top of the gauge reference platform (3), and the two detection limiters (4) form a clamping limit space, and the workpiece (2) is placed inside the clamping limit space; A gas valve switch (8) is installed on the top of the inspection fixture reference platform (3), and multifunctional inspection fixtures (5) are arranged outside the two sides and the front end of the workpiece (2). The multifunctional inspection fixture (5) includes a support base (9) and a size detection component (10) and an air tightness detection component (11) installed on the top of the support base (9), and a slide rail (6) and a locking component (7) are respectively arranged at the bottom of the support base (9).

2. A multi-purpose muffler inspection tool according to claim 1, characterized in that: The two detection limiters (4) are composed of a limit sleeve (41) and a movable locking sleeve (42). Combination grooves are provided in the front and rear ends of the limit sleeve (41). The rear end of the movable locking sleeve (42) is sleeved in the combination groove of the rear end of the limit sleeve (41) through a pin shaft. The front end of the movable locking sleeve (42) is made of a magnetic material and is rotatably connected to the combination groove of the front end of the limit sleeve (41) with the pin shaft as a rotation support. The front ends of the two movable locking sleeves (42) are fixedly connected with handles.

3. The multi-purpose muffler inspection tool according to claim 1, characterized in that: The inner side of the bottom of the support base (9) is clamped with one end of the slide rail (6), the bottom of the slide rail (6) is fixedly connected to the top surface of the gauge reference platform (3), and a clearance groove is provided inside the side of the support base (9).

4. A multi-purpose muffler inspection tool according to claim 3, characterized in that: The locking assembly (7) comprises a locking plate (71), a locking plate (72), and an auxiliary handle (73). The top of the locking plate (71) is provided with a plurality of limit grooves, and the bottom of the locking plate (71) is fixedly mounted on the top of the gauge reference platform (3). One end of the locking plate (72) is sleeved in the clearance groove through a pin shaft, and the other end of the locking plate (72) is fixedly connected to one end of the auxiliary handle (73). The middle part of the locking plate (72) is clamped in a corresponding limit groove.

5. The multi-purpose muffler inspection tool according to claim 3, characterized in that: The size detection assembly (10) comprises a first support sleeve (101), a guide column (102), a detection ring (103), a detection head (104), a tolerance band mark (105) and a first handle (106); the bottom of the first support sleeve (101) is fixedly mounted on the top of the support base (9); a mounting hole is provided on the top of the first support sleeve (101); the detection ring (103) is mounted on the top of the first support sleeve (101) and aligned with the mounting hole; one end of the guide column (102) respectively passes through the detection ring (103) and the mounting hole and extends to the outside of the first support sleeve (101); the end of one end of the guide column (102) is fixedly connected to one end of the first handle (106); the guide column (102) is fixedly mounted on the end of the other end of the guide column (102).

6. A multi-purpose muffler inspection tool according to claim 5, characterized in that: The tolerance zone mark (105) is opened on the surface of one end of the first supporting sleeve plate (101), and the tolerance zone mark (105) serves as a detection mark.

7. The multi-purpose muffler inspection tool according to claim 3, characterized in that: The air tightness detection assembly (11) comprises a second support sleeve (111), a cylinder (112) and a silicone sealing plug (113); the bottom of the second support sleeve (111) is fixedly mounted on the top of the support base (9); the cylinder (112) is mounted on the top of the second support sleeve (111); and the output end of the cylinder (112) passes through the top structure of the second support sleeve (111) and is drivingly connected to one end of the silicone sealing plug (113).

8. The multi-purpose muffler inspection tool according to claim 7, characterized in that: A silicone sealing plug (113) located at the front end of the workpiece (2) is provided with an air charging hole (12) capable of conveying air to the air inlet at the front end of the workpiece (2).

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