Sand-dust test box for sand prevention test of automobile sealing element

Abstract

The utility model relates to the technical field of sand and dust test boxes, and discloses a sand and dust test box for a sand prevention test of an automobile sealing element, which comprises a test main box body, a sealing door hinged and mounted at the front end of the test main box body, a semi-open test box sleeved in the test main box body, and a Foma wheel mounted at the bottom of the test main box body, an observation window aligned with the semi-open test box is embedded in the sealing door, a controller is installed on the surface of the front end of the sealing door, and a supporting frame plate and a composite material frame are arranged in the semi-open test box in a sleeved mode. According to the utility model, the multifunctional object placing platform composed of the composite material rack, the rotation adjusting rod piece and the spring is arranged, so that two test states of horizontal and inclined can be provided for a workpiece in the working process of a sand and dust test box composed of the test main box body, the sealing door, the observation window, the controller, the semi-open test box, the three-way valve pipe and the circulating fan; the participation degree of the side edge structure and the inner hole structure of the workpiece is improved, and detection data are perfected.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and dust test boxes, in particular to a sand and dust test box for anti-sand testing of automobile sealing parts. Background Art

[0002] The sand and dust test chamber, also known as the "sand and dust test chamber", simulates the destructiveness of natural wind and sand climate to products. It is suitable for testing the sealing performance of product shells. It is mainly used for the IP5X and IP6X tests specified in the shell protection level standards of the automotive and other industries.

[0003] As a prior art, the detailed technical content of the dust test box is also in a public state. For example, the authorized patent with application number 201821947641.8 and subject name "A multifunctional dust test box" proposes "a multifunctional dust test box, including a test box body, a collecting box and a roller, the lower end of the test box body is provided with a collecting box, the lower end of the collecting box is provided with a roller, the upper end of the test box body is provided with a feeding mechanism, and the feeding mechanism is connected to the air supply mechanism, the pressure regulating member and the switch through a pipeline". For another example, the authorized patent with application number 202223590216.7 and subject name "A dust test box" proposes "a dust test box, including a test box body, vibration components are respectively installed on the inner walls on both sides of the test box body, a first filter plate is installed on the top outer wall of the vibration component, and a sand blowing component is installed on the outer wall of one side of the test box body".

[0004] However, after the applicant comprehensively compared the actual use experience with the above-mentioned multiple existing technologies, it was found that the improvements of the existing technologies were mostly in how to blow sand, and there was a lack of attention to the problem that the test workpiece was always in a fixed position during the test. The side structure and inner hole structure of the test workpiece that was always in a fixed position were not highly involved, and they might even be blocked and unable to participate in the test, which ultimately led to incomplete test data and affected the overall test effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a sand and dust test box for anti-sand testing of automobile seals, which solves the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a sand and dust test box for anti-sand test of automobile seals, comprising a test main box, a sealing door hingedly installed at the front end of the test main box, a semi-open test box sleeved inside the test main box, and a Forma wheel installed at the bottom of the test main box, wherein an observation window aligned with the semi-open test box is nested inside the sealing door, and a controller is installed on the surface of the front end of the sealing door, a support frame plate and a composite material rack are sleeved inside the semi-open test box, and a rotating adjustment rod and a spring are installed between the support frame plate and the composite material rack;

[0007] The inner side of the bottom of the test main box is equipped with a three-way valve tube, a circulation fan, a heater, a vibrator, and a vacuum pump. One end of the top of the three-way valve tube is mounted on the bottom of the semi-open test box. The two ends of the bottom of the three-way valve tube are respectively connected to the input end of the circulation fan and are mounted in the side wall of one side of the test main box. The output end of the circulation fan extends to the inner side of the top of the rear end of the semi-open test box.

[0008] The heating output structure of the heater is sleeved on the inner side of the bottom of the semi-open test box and is located at the bottom of the supporting frame plate. The vibrator is installed on the surface of the bottom of one side of the semi-open test box. The input end of the vacuum pump is connected to an extension tube, and one end of the extension tube is fixedly sleeved on the inner side of the bottom of the semi-open test box.

[0009] Preferably, a scraper is movably connected to the surface at the rear end of the observation window, one end of the scraper is fixedly connected to a linkage rod, one end of the linkage rod is inserted through a sealing ring and a bearing and is mounted in a structure on one side of the sealing door and protrudes, and a handle is fixedly connected to the end of the linkage rod outside the front end of the sealing door.

[0010] Preferably, the three-way valve tube is internally mounted in the side wall of one side of the test main box body, and its end extends to the outside of one side of the test main box body and is embedded with a first filter net. The extension tube is internally mounted in the end inside the bottom of the semi-open test box and is embedded with a second filter net.

[0011] The composite material rack comprises a material placing frame, a support tube, a first electromagnetic suction cup and a rotating shaft. The support tubes are arranged in a number and are evenly distributed inside the material placing frame. The rotating shaft is fixedly sleeved on the inner side of the middle part of the material placing frame, and the end of the rotating shaft is sleeved on the side wall structure corresponding to the semi-open test box through a bearing.

[0012] Preferably, the first electromagnetic chuck is mounted on the surface of the top of the support tube, and the number of the first electromagnetic chucks is not less than two.

[0013] Preferably, the number of the springs is not less than two and is evenly distributed between one side of the top of the support frame and one side of the bottom of the composite material rack, and between the other side of the top of the support frame and the other side of the bottom of the material placement frame. The support frame is fixedly sleeved inside a semi-open test box, and a wind speed sensor aligned with the port at the output end of the circulating fan is installed on the top inner wall of the rear end of the semi-open test box.

[0014] Preferably, the number of the rotary adjustment rods is two and they are respectively arranged between one side of the top of the support frame and one side of the bottom of the composite material rack, and between the other side of the top of the support frame and the other side of the bottom of the material placement frame.

[0015] Selectedly, the two rotating adjustment rods include a second electromagnetic suction cup and an arc rod. The two second electromagnetic suction cups are respectively movably mounted inside the two sides of the support frame plate, and the structural center of the two second electromagnetic suction cups coincides. The magnetic surfaces of the two second electromagnetic suction cups are respectively magnetically connected to the bottom surfaces of the two arc rods, and support seats are installed between the surfaces of the two second electromagnetic suction cups and the inner walls on both sides of the semi-open test box.

[0016] Preferably, the rear end of the top of the test main box is connected with a drainage pipe, one end of the drainage pipe is sleeved on the inner side of the top of the semi-open test box and a leak-proof filter is nested inside the end of the drainage pipe, and the other end of the drainage pipe is connected with a vacuum cleaner.

[0017] The controller preferably includes a controller body and an air switch, a fan overheat protection module, a fuse, and an external sample abnormality alarm module electrically connected to the controller body.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model is provided with a composite material rack, a rotating adjustment rod, and a spring to form a multifunctional storage platform, and then during the operation of the dust test box composed of a test main box, a sealing door, an observation window, a controller, a semi-open test box, a three-way valve pipe, and a circulating fan, it can provide the workpiece with two test states of horizontal and inclined, thereby improving the participation of the side structure and the inner hole structure of the workpiece and improving the detection data.

[0020] 2. The utility model heats and dries the inside of the semi-open test box through a heater, and applies pressure and vibration to the semi-open test box with a vibrator to overcome the adhesion of the sand, causing the sand to fall back to the circulating fan to participate in the circulation. The vacuum pump and the extension pipe connected to it work in combination to adjust the vacuum level inside the semi-open test box, thereby fully optimizing the use effect of the overall device and improving the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a front view schematic diagram of the structure of the utility model;

[0023] Figure 3 This is a front view schematic diagram of the structural composite material rack of the utility model;

[0024] Figure 4 It is a top view schematic diagram of the structural composite material rack of the utility model;

[0025] Figure 5 It is a cross-sectional schematic diagram of the structural rotation adjustment rod of the utility model.

[0026] In the figure: 1. test main box; 2. sealing door; 3. observation window; 4. controller; 5. semi-open test box; 6. three-way valve pipe; 7. circulation fan; 8. support frame plate; 9. composite material rack; 91. material placement frame plate; 92. support pipe; 93. first electromagnetic suction cup; 94. rotating shaft; 10. rotating adjustment rod; 101. second electromagnetic suction cup; 102. arc rod; 11. spring; 12. heater; 13. vibrator; 14. vacuum pump; 15. wind speed sensor. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-5 A dust test box for anti-sand test of automobile seals comprises a test main box 1, a sealing door 2 hingedly mounted on the front end of the test main box 1, a semi-open test box 5 sleeved inside the test main box 1, and a Forma wheel mounted on the bottom of the test main box 1, an observation window 3 aligned with the semi-open test box 5 is nested inside the sealing door 2, and a controller 4 is mounted on the surface of the front end of the sealing door 2, a support frame 8 and a composite material rack 9 are sleeved inside the semi-open test box 5, and a rotating adjustment rod 10 and a spring 11 are mounted between the support frame 8 and the composite material rack 9;

[0029] The composite material rack 9 includes a material placement frame plate 91, a support tube 92, a first electromagnetic suction cup 93, and a rotating shaft 94. The support tubes 92 are provided in a plurality and are evenly distributed inside the material placement frame plate 91, thereby forming a material placement platform to stably support the material to be tested. The rotating shaft 94 is fixedly sleeved on the inner side of the middle of the material placement frame plate 91, and the end of the rotating shaft 94 is sleeved on the corresponding side wall structure of the semi-open test box 5 through a bearing, providing support conditions for the subsequent overall rotation and adjustment of the composite material rack 9. The first electromagnetic suction cup 93 is installed on the surface of the top of the support tube 92, and the number of the first electromagnetic suction cups 93 is not less than two, thereby providing multiple magnetic suction limit points to ensure the stability of the workpiece in an inclined state;

[0030] The surface of the rear end of the observation window 3 is movably connected with a scraper, one end of the scraper is fixedly connected with a linkage rod, one end of the linkage rod is inserted through a sealing ring and a bearing and is inserted into a structure on one side of the sealing door 2 and protrudes, and the end of the linkage rod outside the front end of the sealing door 2 is fixedly connected with a handle, and the scraper, the linkage rod and the handle form a dust scraper, which provides operating conditions for the user to clean the observation window 3 from the outside, and is convenient for observing the test situation;

[0031] The number of springs 11 provided is not less than two and is evenly distributed between one side of the top of the support frame plate 8 and one side of the bottom of the composite material rack 9, and between the other side of the top of the support frame plate 8 and the other side of the bottom of the material placing frame plate 91. The spring 11 provides power conditions for the automatic reset of the composite material rack 9 on the support frame plate 8. The support frame plate 8 is fixedly sleeved inside the semi-open test box 5. The wind speed sensor 15 aligned with the port at the output end of the circulating fan 7 is installed on the top inner wall of the rear end of the semi-open test box 5 to detect the wind speed and improve the data;

[0032] The inner side of the bottom of the test main box 1 is equipped with a three-way valve tube 6, a circulating fan 7, a heater 12, a vibrator 13, and a vacuum pump 14. One end of the top of the three-way valve tube 6 is mounted on the bottom of the semi-open test box 5. The two ends of the bottom of the three-way valve tube 6 are respectively connected to the input end of the circulating fan 7 and are mounted in the side wall of one side of the test main box 1. The output end of the circulating fan 7 extends to the inner side of the top of the rear end of the semi-open test box 5.

[0033] There are two rotation adjustment rods 10, which are respectively arranged between one side of the top of the support frame 8 and one side of the bottom of the composite material rack 9, and between the other side of the top of the support frame 8 and the other side of the bottom of the material placement frame 91. The two rotation adjustment rods 10 include a second electromagnetic suction cup 101 and an arc rod 102. The two second electromagnetic suction cups 101 are respectively movably sleeved on the inside of the two sides of the support frame 8, and the structural centers of the two second electromagnetic suction cups 101 coincide with each other. The magnetic surfaces of the two second electromagnetic suction cups 101 are respectively magnetically connected to the bottom surfaces of the two arc rods 102. Support seats are installed between the surfaces of the two second electromagnetic suction cups 101 and the inner walls on both sides of the semi-open test box 5, thereby providing rotation support conditions for the composite material rack 9 to drive the workpiece on the support frame 8 to rotate and adjust;

[0034] In order to ensure the stability of air pressure and the input of air, the three-way valve tube 6 is sleeved in the middle of the side wall of one side of the test main box 1, and the end thereof extends to the outside of one side of the test main box 1 and is embedded with a first filter screen, and the extension tube is sleeved in the end thereof on the inner side of the bottom of the semi-open test box 5 and is embedded with a second filter screen;

[0035] The heating output structure of the heater 12 is sleeved on the inner side of the bottom of the semi-open test box 5 and is located at the bottom of the support frame 8. The vibrator 13 is installed on the surface of the bottom of one side of the semi-open test box 5. The input end of the vacuum pump 14 is connected to an extension tube, and one end of the extension tube is fixedly sleeved on the inner side of the bottom of the semi-open test box 5.

[0036] A drainage pipe is connected to the rear end of the top of the test main box 1. One end of the drainage pipe is sleeved on the inner side of the top of the semi-open test box 5 and a leak-proof filter is nested inside its end. The other end of the drainage pipe is connected to a vacuum cleaner to provide conditions for dust removal in the subsequent equipment startup stage.

[0037] The controller 4 includes a controller body and an air switch electrically connected to the controller body to prevent overcurrent and short circuit, a fan overheating protection module to protect the circulating fan 7 to prevent the circulating fan 7 from overheating, a fuse to prevent short circuits between the control circuit and the lighting circuit, and an external sample abnormality alarm module, which is user-selectable. The equipment stops running when a test product fails.

[0038] Working principle:

[0039] Embodiment 1

[0040] The workpiece to be tested is horizontally placed in the dust test, the sealed door 2 is turned over to make room for the front end of the semi-open test box 5, the workpiece to be tested is placed on the top surface of the composite material rack 9, and then the sealed door 2 is reset and closed to seal the inner space of the semi-open test box 5, the circulating fan 7 is started, and the circulating fan 7 pumps the test sand on the inner side of the bottom of the semi-open test box 5 through the three-way valve pipe 6 and then transports it to the inner side of the top of the semi-open test box 5 through the output end, and as the airflow is further transported, the sand falls with the airflow to the surface of the workpiece to be tested on the top of the composite material rack 9 to impact, and then falls into the inner side of the bottom of the semi-open test box 5, thus repeating the cycle to achieve the dust test operation;

[0041] During the test, the interior of the semi-open test box 5 is heated and dried by the heater 12, and the vibrator 13 applies pressure and vibration to the semi-open test box 5 to overcome the adhesion of the sand, so that the sand falls back to the circulation fan 7 to participate in the circulation, and the vacuum pump 14 and the extension pipe connected to it work in combination to adjust the vacuum level inside the semi-open test box 5;

[0042] After the test is completed, before opening the sealed door 2, turn off the circulating fan 7, heater 12, and vibrator 13, start the vacuum cleaner associated with the drainage pipe, and then suck and clean the sand floating inside the semi-open test box 5, then open the sealed door 2 and take out the workpiece.

[0043] Embodiment 2

[0044] The workpiece to be tested is tilted to participate in the dust test, and the sealed door 2 is turned over to make room for the front end of the semi-open test box 5, and the workpiece to be tested is placed on the top surface of the composite material rack 9 and covered on the magnetic surface of the first electromagnetic suction cup 93, and the first electromagnetic suction cup 93 is opened, and the workpiece is magnetically limited by the first electromagnetic suction cup 93, and then the second electromagnetic suction cup 101 is closed, and any side of the material placement frame plate 91 is pressed, so that the material placement frame plate 91 is supported by the rotating shaft 94 and the second electromagnetic suction cup 101 is engaged with the support frame plate 8. Guide, drive the workpiece to be tested to tilt and adjust until the appropriate angle, and then reopen the arc rod 102 to ensure the stability of the composite material rack 9 after adjustment;

[0045] The sealing door 2 is reset and closed to seal the inner space of the semi-open test box 5, and the circulating fan 7 is started. The circulating fan 7 sucks the test sand from the inner side of the bottom of the semi-open test box 5 through the three-way valve pipe 6 and then transports it to the inner side of the top of the semi-open test box 5 through the output end. As the airflow is further transported, the sand falls to the surface of the workpiece to be tested on the top of the composite material rack 9 with the airflow, and then falls into the inner side of the bottom of the semi-open test box 5. This cycle is repeated to realize the sand and dust test operation.

[0046] During the test, the interior of the semi-open test box 5 is heated and dried by the heater 12, and the vibrator 13 applies pressure and vibration to the semi-open test box 5 to overcome the adhesion of the sand, so that the sand falls back to the circulation fan 7 to participate in the circulation, and the vacuum pump 14 and the extension pipe connected to it work in combination to adjust the vacuum level inside the semi-open test box 5;

[0047] After the test is completed, before opening the sealed door 2, turn off the circulating fan 7, heater 12, and vibrator 13, start the vacuum cleaner associated with the drainage pipe, and then suck and clean the sand floating inside the semi-open test box 5, then open the sealed door 2 and take out the workpiece.

[0048] 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.

[0049] 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 dust test box for a sand prevention test of automobile seals, comprising a test main box (1), a sealing door (2) hingedly mounted on the front end of the test main box (1), a semi-open test box (5) sleeved inside the test main box (1), and a Forma wheel mounted on the bottom of the test main box (1), wherein an observation window (3) aligned with the semi-open test box (5) is nested inside the sealing door (2), and a controller (4) is mounted on the surface of the front end of the sealing door (2), characterized in that: The semi-open test box (5) is internally provided with a support frame plate (8) and a composite material rack (9), and a rotation adjustment rod (10) and a spring (11) are installed between the support frame plate (8) and the composite material rack (9); The inner side of the bottom of the test main box (1) is sleeved with a three-way valve tube (6), a circulation fan (7), a heater (12), a vibrator (13), and a vacuum pump (14); one end of the top of the three-way valve tube (6) is sleeved on the bottom of the semi-open test box (5); the two ends of the bottom of the three-way valve tube (6) are respectively connected to the input end of the circulation fan (7) and sleeved in the side wall of one side of the test main box (1); the output end of the circulation fan (7) extends to the inner side of the top of the rear end of the semi-open test box (5); The heating output structure of the heater (12) is sleeved on the inner side of the bottom of the semi-open test box (5) and is located at the bottom of the support frame plate (8); the vibrator (13) is installed on the surface of the bottom of one side of the semi-open test box (5); the input end of the vacuum pump (14) is connected to an extension tube, and one end of the extension tube is fixedly sleeved on the inner side of the bottom of the semi-open test box (5).

2. The dust test box for automobile seal anti-sand test according to claim 1, characterized in that: The rear end of the observation window (3) is movably connected to a scraper, one end of the scraper is fixedly connected to a linkage rod, one end of the linkage rod is inserted through a sealing ring and a bearing and is sheathed in a structure on one side of the sealing door (2) and protrudes out, and the end of the linkage rod located outside the front end of the sealing door (2) is fixedly connected to a handle.

3. The dust test box for automobile seal anti-sand test according to claim 1, characterized in that: The three-way valve tube (6) is sleeved inside the side wall of one side of the test main box (1), and its end extends to the outside of one side of the test main box (1) and is embedded with a first filter screen. The extension tube is sleeved inside the bottom of the semi-open test box (5), and is embedded with a second filter screen.

4. The dust test box for automobile seal anti-sand test according to claim 1, characterized in that: The composite material rack (9) comprises a material placement frame plate (91), a support tube (92), a first electromagnetic suction cup (93), and a rotating shaft (94); the support tubes (92) are arranged in a plurality and are evenly distributed inside the material placement frame plate (91); the rotating shaft (94) is fixedly sleeved on the inner side of the middle portion of the material placement frame plate (91); and the end of the rotating shaft (94) is sleeved on a corresponding side wall structure of the semi-open test box (5) through a bearing.

5. The dust test box for automobile seal anti-sand test according to claim 4, characterized in that: The first electromagnetic suction cup (93) is mounted on the surface of the top of the support tube (92), and the number of the first electromagnetic suction cups (93) is not less than two.

6. The dust test box for automobile seal anti-sand test according to claim 4, characterized in that: The number of the springs (11) provided is not less than two and is evenly distributed between one side of the top of the support frame plate (8) and one side of the bottom of the composite material rack (9), and between the other side of the top of the support frame plate (8) and the other side of the bottom of the material placement frame plate (91). The support frame plate (8) is fixedly sleeved inside the semi-open test box (5), and a wind speed sensor (15) aligned with a port at the output end of the circulation fan (7) is mounted on the top inner wall of the rear end of the semi-open test box (5).

7. The dust test box for automobile seal anti-sand test according to claim 4, characterized in that: The number of the rotating adjustment rods (10) is two and they are respectively arranged between one side of the top of the support frame plate (8) and one side of the bottom of the composite material rack (9), and between the other side of the top of the support frame plate (8) and the other side of the bottom of the material placement frame plate (91).

8. The dust test box for automobile seal anti-sand test according to claim 1, characterized in that: The two rotating adjustment rods (10) comprise a second electromagnetic suction cup (101) and an arc-shaped rod (102); the two second electromagnetic suction cups (101) are respectively movably sleeved inside the two sides of the support frame plate (8); the structural centers of the two second electromagnetic suction cups (101) coincide with each other; the magnetic surfaces of the two second electromagnetic suction cups (101) are respectively magnetically connected to the bottom surfaces of the two arc-shaped rods (102); and support seats are installed between the surfaces of the two second electromagnetic suction cups (101) and the inner walls on both sides of the semi-open test box (5).

9. The dust test box for automobile seal anti-sand test according to claim 1, characterized in that: The rear end of the top of the test main box (1) is connected to a drainage pipe, one end of the drainage pipe is sleeved on the inner side of the top of the semi-open test box (5) and a leak-proof filter is embedded in the end of the drainage pipe, and the other end of the drainage pipe is connected to a vacuum cleaner.

10. The dust test box for automobile seal anti-sand test according to any one of claims 1 to 9, characterized in that: The controller (4) internally comprises a controller body and an air switch, a fan overheat protection module, a fuse, and an external sample abnormality alarm module electrically connected to the controller body.

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