Leakage-proof detection device for nut in cavity for automobile part processing

Abstract

The utility model discloses an in-cavity nut leak-proof detection device for automobile part processing, which comprises a supporting seat and a circular groove arranged at the top of the supporting seat, a hollow column is slidably connected in the circular groove, and the bottom of the hollow column is fixedly connected with a sliding rod, and relates to the technical field of automobile part processing. According to the cavity inner nut leakage-proof detection device for automobile part processing, a moving plate is pushed upwards to drive a U-shaped inclined plate to move upwards, the U-shaped inclined plate can drive two lower inclined panels to move towards the middle, the two lower inclined panels can drive two sliding plates to move towards the middle, and the two sliding plates can drive two limiting plates to move towards the middle into a hollow column; the hollow column is inserted into the cavity, the two limiting plates are driven to extend out to be limited in the nut through the acting force of the two second springs, the moving plate is pushed upwards again to drive the two limiting plates to retract into the hollow column, and therefore the hollow column can be conveniently taken out of the cavity, and operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically to a nut leakage prevention detection device for automotive parts processing. Background Technology

[0002] In the automobile manufacturing process, a car body typically uses nuts to secure trim pieces and dashboard components. The welding process for the car body involves numerous and tightly connected steps, and the operation is irreversible. Before welding, the position of the nuts in the cavities of each component must be confirmed. However, when welding assemblies of some cavity-type parts, due to the limited space within the cavity, workers may weld parts without welded nuts into assemblies, and it is difficult to detect the defect with the naked eye. These defective parts then flow into the customer's production line. Missing nut welds can directly lead to the scrapping of the entire car body. Patent documents have already addressed this issue.

[0003] Chinese patent CN217253819U discloses a nut leakage prevention detection device for automotive parts processing cavities. The device includes a detection support base, a detection mounting body at the bottom of the support base, a proximity switch sensor on the side of the mounting body, a sliding cavity at the top of the mounting body, a through groove at the top of the support base, a sliding sleeve on the groove, a positioning pin through the sliding sleeve in the sliding cavity, a limit ring on the positioning pin within the sliding cavity, a first spring between the limit ring and the sliding cavity, and a contact component with anti-false detection function at the top of the positioning pin. The advantages are: this invention, by incorporating a leakage prevention detection mechanism on the detection support base, and through the cooperation of the first spring and the positioning pin, determines whether the proximity switch sensor can detect the movement of a conductive body, thereby identifying the presence of a nut within the cavity. This convenient operation ensures the integrity of welded assemblies for some cavity-type parts, thus improving the quality of automotive parts processing.

[0004] Although the aforementioned patent uses a positioning pin to inspect the cavity, it requires pressing two adjusting blocks before inspecting the cavity of the component. The positioning pin enters the cavity, and the two adjusting blocks are extended into the nut by springs to squeeze and limit them. After the cavity is inspected, the two adjusting blocks are still limited in the nut and cannot continue to contact the two adjusting blocks to retract, making it difficult to remove the positioning pin from the cavity. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a leak-proof detection device for nuts inside cavities used in automotive parts processing. This device solves the problem that the two adjusting blocks are still limited inside the nut and cannot continue to contact the two adjusting blocks for retraction, making it difficult to remove the locating pin from the cavity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nut leakage prevention detection device for automotive parts processing, comprising a support base and a circular groove on the top of the support base. A hollow column is slidably connected inside the circular groove, and a sliding rod is fixedly connected to the bottom of the hollow column. One end of the sliding rod passes through the circular groove and extends to the bottom of the support base. A sliding opening adapted to the sliding rod is provided at the bottom of the support base. A trigger block is fixedly installed at the end of the sliding rod. A first spring is sleeved on the surface of the sliding rod between the hollow column and the support base. A proximity switch sensor is fixedly installed on the lower side of one side of the support base through an opening. A limit mechanism is provided at the top of the hollow column cavity, and a control mechanism adapted to the limit mechanism is provided at the bottom of the hollow column cavity.

[0007] Preferably, the limiting mechanism includes a fixing plate, which is fixedly connected to the top of the hollow column cavity, and sliding grooves are provided on both sides of the hollow column cavity.

[0008] Preferably, a sliding plate is slidably connected between the front and rear parts of the sliding groove cavity, a second spring is fixedly connected between the sliding plate and the fixed plate, and a limit plate is fixedly connected to one side of the sliding plate.

[0009] Preferably, the control mechanism includes a mounting cylinder, which is fixedly connected to the bottom of the hollow column cavity. A mounting rod is slidably connected inside the mounting cylinder, and a U-shaped inclined plate is fixedly connected to one end of the mounting rod.

[0010] Preferably, a third spring is sleeved on the surface of the mounting cylinder and the mounting rod, and a lower inclined panel adapted to the U-shaped inclined plate is fixedly connected to the bottom of the sliding plate.

[0011] Preferably, a movable plate is fixedly connected to the front of the U-shaped inclined plate. The front of the movable plate passes through the hollow column and the support seat in sequence and extends to the front of the support seat. The surface of the hollow column and the front of the support seat are both provided with openings that are adapted to the movable plate. Beneficial effects

[0012] This utility model provides a leak-proof detection device for nuts inside cavities used in automotive parts processing. Compared with existing technologies, it has the following advantages:

[0013] (1) This utility model moves the U-shaped inclined plate upward by pushing the moving plate upward. The U-shaped inclined plate will move the two lower inclined plates to the middle. The two lower inclined plates will move the two sliding plates to the middle. The two sliding plates will move the two limiting plates to the middle and into the hollow column. The hollow column is inserted into the cavity. Through the force of the two second springs, the two limiting plates will extend out and be limited in the nut. Pushing the moving plate upward again will cause the two limiting plates to retract into the hollow column, so that the hollow column can be easily taken out of the cavity, making the operation more convenient.

[0014] (2) The utility model inserts a hollow column into the cavity, and two limiting plates extend out to limit the nut. The support seat pushes the hollow column to move. If the hollow column moves relative to the support seat, the hollow column will drive the trigger block to move to the proximity switch sensor to trigger the indicator light, and it is determined that there is a nut in the cavity. Otherwise, the hollow column does not drive the trigger block to move to the proximity switch sensor, and it is determined that there is no nut. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is a structural schematic diagram of the hollow column, sliding rod, and moving plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the hollow column, limiting mechanism, and control mechanism of this utility model.

[0019] Figure 5 This is a bottom view of the internal structure of the hollow column of this utility model.

[0020] In the diagram: 1. Support base; 2. Circular groove; 3. Hollow column; 4. Sliding rod; 5. Trigger block; 6. First spring; 7. Proximity switch sensor; 8. Limiting mechanism; 9. Control mechanism; 10. Moving plate; 11. Strip-shaped through groove; 81. Fixed plate; 82. Sliding through groove; 83. Sliding plate; 84. Second spring; 85. Limiting plate; 91. Mounting cylinder; 92. Lower inclined panel; 93. Mounting rod; 94. U-shaped inclined plate; 95. Third spring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figure 1-5This utility model provides a technical solution: a nut leakage prevention detection device for automotive parts processing cavity, including a support base 1 and a circular groove 2 opened on the top of the support base 1. An indicator light is installed on the top of the support base 1. A hollow column 3 is slidably connected inside the circular groove 2. A sliding rod 4 is fixedly connected to the bottom of the hollow column 3. One end of the sliding rod 4 passes through the circular groove 2 and extends to the bottom of the support base 1. A sliding opening adapted to the sliding rod 4 is opened at the bottom of the support base 1. A trigger block 5 is fixedly installed at the end of the sliding rod 4. A first spring 6 is sleeved on the surface of the sliding rod 4 and between the hollow column 3 and the support base 1. A proximity switch sensor 7 is fixedly installed on the lower side of one side of the support base 1 through an opening. The proximity switch is a position switch that can be operated without direct mechanical contact with moving parts. When an object approaches the sensing surface of the switch to the action distance, the switch can be activated without mechanical contact or the application of any pressure. A limit mechanism 8 is provided at the top of the cavity of the hollow column 3, and a control mechanism 9 adapted to the limit mechanism 8 is provided at the bottom of the cavity of the hollow column 3.

[0023] Furthermore, in order to facilitate the confinement of the hollow column 3 within the nut, the limiting mechanism 8 includes a fixing plate 81, which is fixedly connected to the top of the inner cavity of the hollow column 3. Sliding grooves 82 are provided on both sides of the inner cavity of the hollow column 3. A sliding plate 83 is slidably connected between the front and rear parts of the inner cavity of the sliding groove 82. A second spring 84 is fixedly connected between the sliding plate 83 and the fixing plate 81. A limiting plate 85 is fixedly connected to one side of the sliding plate 83.

[0024] Furthermore, in order to control the movement of the limit plate 85 at any time, the control mechanism 9 includes a mounting cylinder 91, which is fixedly connected to the bottom of the hollow column 3. A mounting rod 93 is slidably connected inside the mounting cylinder 91. A U-shaped inclined plate 94 is fixedly connected to one end of the mounting rod 93. A third spring 95 is sleeved on the surface of the mounting cylinder 91 and the mounting rod 93. A lower inclined plate 92 that matches the U-shaped inclined plate 94 is fixedly connected to the bottom of the sliding plate 83.

[0025] A movable plate 10 is fixedly connected to the front of the U-shaped inclined plate 94. The front of the movable plate 10 passes through the hollow column 3 and the support base 1 in sequence and extends to the front of the support base 1. The surface of the hollow column 3 and the front of the support base 1 are both provided with strip-shaped through grooves 11 that are adapted to the movable plate 10.

[0026] In use, by pushing the moving plate 10 upward, the U-shaped inclined plate 94 moves upward. The two inclined surfaces of the U-shaped inclined plate 94 will press against the two lower inclined panels 92, pushing the two lower inclined panels 92 to move towards the middle. The two lower inclined panels 92 will drive the two sliding plates 83 to move towards the middle. The two sliding plates 83 will drive the two limiting plates 85 to move towards the middle into the hollow column 3. Then, the support base 1 is moved as a whole, so that the hollow column 3 on the support base 1 is inserted into the cavity of the automotive parts. The moving plate 10 is no longer pushed. The force of the third spring 95 pulls the mounting rod 93 downward to reset. The mounting rod 93 will drive the U-shaped inclined plate 94 downward to reset and no longer press against the two lower inclined panels 92. The force of the second spring 84 pushes the sliding plates 83 to move to both sides. The two sliding plates 83 will drive the two limiting plates 85 to move out of the hollow column 3, so that the two limiting plates 85 are limited in the nut.

[0027] By pushing the support base 1 upward, the hollow column 3 is limited inside the nut by the two limiting plates 85. The hollow column 3 moves downward relative to the support base 1, and the hollow column 3 will drive the trigger block 5 downward to the sensing position of the proximity switch sensor 7, triggering the proximity switch sensor 7 to start the indicator light to light up, thereby determining that there is a nut in the cavity. Then, push the moving plate 10 upward, causing the two limiting plates 85 to retract into the hollow column 3, and the hollow column 3 can be taken out of the cavity.

[0028] If the hollow column 3 is inserted into the inner cavity and the support base 1 is pushed to move, the hollow column 3 does not move relative to the inside, that is, the trigger block 5 does not move, and the proximity switch sensor 7 does not trigger the indicator light, indicating that there is no nut in the cavity.

Claims

1. A cavity nut leak detection device for automobile parts processing, comprising a support seat (1) and a circular groove (2) opened at the top of the support seat (1), characterized in that: The inside of the circular groove (2) is slidably connected with a hollow column (3), the bottom of the hollow column (3) is fixedly connected with a sliding rod (4), one end of the sliding rod (4) penetrates the circular groove (2) and extends below the supporting seat (1), the bottom of the supporting seat (1) is provided with a sliding opening matched with the sliding rod (4), the end of the sliding rod (4) is fixedly installed with a trigger block (5), the surface of the sliding rod (4) and between the hollow column (3) and the supporting seat (1) is sleeved with a first spring (6), the lower side of the supporting seat (1) is fixedly installed with a proximity switch sensor (7) through an opening, the top of the inner cavity of the hollow column (3) is provided with a limiting mechanism (8), and the bottom of the inner cavity of the hollow column (3) is provided with a control mechanism (9) matched with the limiting mechanism (8).

2. The cavity nut leak detection device for automotive parts machining according to claim 1, characterized in that: The limiting mechanism (8) comprises a fixed plate (81), the fixed plate (81) is fixedly connected to the top of the inner cavity of the hollow column (3), and sliding grooves (82) are formed in the two sides of the inner cavity of the hollow column (3).

3. The cavity nut leak detection device for automotive parts machining according to claim 2, characterized in that: The inner cavity of the sliding groove (82) is slidably connected between the front and rear portions of the sliding groove (82), the second spring (84) is fixedly connected between the sliding plate (83) and the fixed plate (81), and the side of the sliding plate (83) is fixedly connected with a limiting plate (85).

4. The cavity nut leak detection device for automotive parts machining according to claim 3, characterized in that: The control mechanism (9) comprises an installation cylinder (91), the installation cylinder (91) is fixedly connected to the bottom of the inner cavity of the hollow column (3), the inside of the installation cylinder (91) is slidably connected with an installation rod (93), and one end of the installation rod (93) is fixedly connected with a U-shaped inclined plate (94).

5. The cavity nut leak detection device for automotive parts machining according to claim 4, characterized in that: The surface of the installation cylinder (91) and the installation rod (93) is sleeved with a third spring (95), and the bottom of the sliding plate (83) is fixedly connected with a lower inclined surface plate (92) matched with the U-shaped inclined plate (94).

6. The cavity nut leak detection device for automotive parts machining according to claim 4, characterized in that: The front of the U-shaped inclined plate (94) is fixedly connected with a moving plate (10), the front of the moving plate (10) penetrates the hollow column (3) and the supporting seat (1) in sequence and extends to the front of the supporting seat (1), and the surface of the hollow column (3) and the front of the supporting seat (1) are provided with a strip-shaped through groove (11) matched with the moving plate (10).

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