Leakage detection equipment for automobile parts

Abstract

The utility model relates to leak detection equipment for automobile parts, which comprises a detection mechanism which comprises a lower clamp, an upper clamp and an air inlet mechanism, and is characterized by further comprising a detection platform, the detection platform is provided with a first station and a second station which are respectively used for detecting a first half part and a second half part of a to-be-detected object, the first half part is provided with a first opening, the second half part is provided with a T-shaped first valve interface, and an upper clamp of the first station is provided with a first plugging piece capable of plugging the first opening; the first station is provided with a first valve connector, the second station is provided with a first plugging mechanism capable of plugging the first valve connector, and the first plugging mechanism comprises a first plugging head and a driving part for driving the first plugging head to move along a T-shaped path. The plugging device can be suitable for products with channels needing to be plugged in all directions and T-shaped valves.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a leakage detection device for automobile parts. Background Art

[0002] In the field of automobile parts production, leak detection equipment is usually used to detect each cavity or channel in the product. The general detection method is to use air for air tightness detection. This type of detection equipment, such as the Chinese utility model patent "A leak detection device for a four-cylinder engine" with reference patent number CN202120788881.3 (publication number CN215178427U), is based on the premise that the contact surface between the product and the lower fixture is a plane;

[0003] However, if the product to be tested is, for example, Figure 1 The product 1' shown has a channel 11' that needs to be blocked in all directions. That is, if the A' perspective is taken as a top-down perspective, the channel 11' that needs to be blocked can be observed in the six basic perspectives of the product 1'. The following problems will occur when using the leak detection device in the above patent:

[0004] First, it is difficult to fix and block all channels 11' in all directions, especially to block the channels 11' at the top and bottom of the product 1' at the same time;

[0005] Second, the product 1' also has a plurality of T-shaped valves 12', the horizontal ends of the valves 12' are fixedly connected to the product 1', and the valves 12' also have valve ports 13' connected to the inner cavity fluid of the product 1', so they also need to be blocked. Specifically, the valve ports 13' of the valves 12' are located on the vertical end faces. There may be two relationships between the valve port 13' and the product 1'. First, the valve port 13' is not blocked by the surface of the product 1'. In this case, a conventional sealing mechanism can smoothly contact the valve port 13', but if a conventional sealing mechanism is used to directly contact and block the valve port 13', the horizontal end of the valve 12' may be deformed or even damaged due to force; second, part of the valve port 13' is blocked by the surface of the product 1', which makes it easy for the sealing mechanism to interfere with the surface of the product 1' when the valve port 13' is blocked by a conventional sealing mechanism. In summary, it is difficult to use the leak detection device in the above patent to block the product 1' with a valve 12'. Therefore, further improvements to the prior art are needed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a leak detection device for automobile parts that can be applicable to products having channels that need to be blocked in various directions and having such T-shaped valves in view of the above-mentioned existing technical status.

[0007] The utility model solves the above technical problems by adopting the following technical solution: the leak detection device for automobile parts includes a detection mechanism for air tightness detection, and the detection mechanism includes:

[0008] A lower fixture for placing an object to be inspected;

[0009] An upper clamp, used for pressing the object to be inspected;

[0010] An air intake mechanism, arranged on the lower fixture and / or the upper fixture, for supplying air to the cavity to be tested of the object to be inspected;

[0011] The invention is characterized in that: it also includes a detection platform, on which the first station and the second station of the detection mechanism are respectively arranged, the first station is used to detect the first half of the object to be inspected, and the second station is used to detect the second half of the object to be inspected, wherein the first half is provided with a first opening which is connected to the cavity to be inspected, and the second half is provided with a first valve interface which is connected to the cavity to be inspected and is in a T-shape;

[0012] A sealing seat corresponding to the cavity to be tested is provided on the upper surface of the lower clamp of the first station, and a first sealing member capable of sealing the first opening is provided on the upper clamp of the first station. When the first sealing member seals the first opening, the cavity to be tested in the first half can form an independent enclosed space; and a first sealing mechanism capable of sealing the first valve interface of the second half is provided on the second station, the first sealing mechanism includes a first sealing head and a driving member for driving the first sealing head to move along a T-shaped path, thereby sealing the first valve interface to form an independent enclosed space for the cavity to be tested in the second half.

[0013] In order to be able to block the T-shaped valve interface, preferably, the first blocking head partially protrudes from the driving member toward the first valve interface, and the driving member includes a base fixedly connected to the lower clamp, and the base is provided with a first movable part that can move along the vertical end direction of the first valve interface, and a second movable part that can move along the horizontal end direction of the first valve interface is alternately arranged above the first movable part. Through the first movable part and the second movable part of the driving member, the first blocking head can move along the T-shaped path, so that the first blocking head can block the valve interface with any direction of the valve port. However, if the valve port of the valve interface is in a more conventional direction, for example, the valve port is facing upward and is not blocked by other parts of the second half, the first blocking head can be directly installed on the upper clamp to block the valve interface. Therefore, such a design is mainly considered to be applicable to most valve interfaces, especially valve interfaces whose valve ports are blocked by other parts of the second half and are difficult to block using conventional blocking structures.

[0014] Furthermore, the second half is also provided with a second valve interface which is connected to the cavity to be tested and is T-shaped, the valve port of the second valve interface faces upward, and the upper clamp also includes a second sealing head which can seal the second valve interface. When the upper clamp presses the second half, the second sealing head can seal the second valve interface.

[0015] In order to prevent the second valve interface from being damaged due to unbalanced force when the second plugging head is plugging the second valve interface, preferably, a first support member is also provided on the lower clamp, and the first support member can be in conflict with the second valve interface relative to the second plugging head, so as to support the second valve interface during the plugging process. This design takes into account that when the upper clamp presses the second half, the second plugging head will apply a larger force to the second valve interface. Since the second valve interface is T-shaped, it is easy to be twisted or even damaged due to unbalanced force. The first support member is provided to balance the force applied to the second valve interface by the second plugging head. The first support member can be a structure such as an elastic member, a conventional support member, etc.

[0016] In order to prevent the first support member from being in too close contact or not in contact with the second valve interface due to an error in the position of the second valve interface, preferably, the first support member is also connected to a first driving source, and the first driving source is fixedly connected to the lower clamp. The first driving source can drive the first support member to move toward the second valve interface so that the first support member can conflict with the second valve interface. The first driving source can be selected from, for example, an auxiliary supporting cylinder, and the first driving source can stop driving after driving the first support member until it conflicts with the second valve interface.

[0017] Furthermore, the first half is also provided with a third valve interface which is connected to the cavity to be tested and is T-shaped, the horizontal end of the third valve interface is upward, and the valve port of the third valve interface is located on the vertical end face, and a third plugging head which can block the third valve interface is provided at the corresponding position of the lower clamp, and the third plugging head is connected to the lower clamp through a second driving source, and the second driving source can drive the third plugging head to move toward the third valve interface to block the third valve interface. Since the horizontal end of the third valve interface is upward and the valve port is located on the vertical end face, the valve port of the third valve interface faces sideways, and it is difficult to block the third valve interface by setting the plugging head on the upper clamp. Therefore, it is necessary to set a third plugging head for blocking the third valve interface at the corresponding position of the lower clamp.

[0018] In order to prevent the third valve interface from being damaged due to unbalanced force when the third sealing head is sealing the third valve interface, preferably, the upper clamp is also provided with a second supporting member capable of pressing the horizontal end of the third valve interface. When the upper clamp presses the first half, the second supporting member can press the horizontal end of the third valve interface. When the vertical end of the third valve interface is subjected to the force from the third sealing head, it is difficult to deflect, thereby preventing the third valve interface from being damaged due to unbalanced force.

[0019] Furthermore, the first half and / or the second half is also provided with a second opening facing the side, and the second opening is communicated with the cavity to be tested. The lower clamp is also provided with a second blocking piece capable of blocking the second opening. With such a design, even if the first half and / or the second half is also provided with a second opening facing the side, the second blocking piece can block the second opening, so that the corresponding cavity to be tested of the first half and / or the second half forms an independent enclosed space.

[0020] In order for the upper clamp to be able to move downward to the working position to press the object to be inspected, preferably, the upper end of the detection mechanism is also provided with a third driving source for driving the upper clamp. The third driving source is connected to the upper clamp through a movable platform, and then drives the upper clamp to move between the initial position and the working position. The driving source can be a common driving source such as a cylinder.

[0021] In order to make the upper clamp move more smoothly during the downward movement, preferably, the detection mechanism also includes a fourth driving source for assisting the third driving source in driving the upper clamp. The fourth driving source is connected to the upper clamp through the mobile platform. At least two fourth driving sources are arranged along the circumference of the third driving source. The fourth driving sources are evenly distributed along the circumference of the third driving source. The fourth driving source can be selected from, for example, an auxiliary cylinder.

[0022] Compared with the prior art, the advantages of the utility model are:

[0023] 1. By providing a first station and a second station for detecting the first half and the second half of the object to be inspected, respectively, it is possible to detect leaks on products having channels that need to be blocked in all directions;

[0024] 2. The first plugging mechanism is provided with a driving member capable of driving the first plugging head to move along a T-shaped path, and is suitable for plugging products with a T-shaped valve interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the product in the background technology;

[0026] Figure 2This is a schematic diagram of the structure of the object to be inspected in the embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the first half of the embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the second half of the embodiment of the utility model;

[0029] Figure 5 This is a structural schematic diagram of another angle of the second half of the embodiment of the utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the leakage detection device in the embodiment of the utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the first station of the detection mechanism in the embodiment of the utility model;

[0032] Figure 8 It is a structural schematic diagram of the first station of the detection mechanism in another angle in the embodiment of the utility model;

[0033] Fig. 9 This is a schematic diagram of the structure of the second station of the detection mechanism in the embodiment of the utility model;

[0034] Fig.10 It is a structural schematic diagram of the second half and the first blocking mechanism in the embodiment of the utility model;

[0035] Fig.11 This is a structural schematic diagram of the second station of the detection mechanism in the embodiment of the utility model from another angle;

[0036] Fig.12 This is a schematic diagram of the first blocking mechanism in an initial state in an embodiment of the utility model;

[0037] Fig.13 This is a schematic diagram of the state in which the first blocking mechanism in the embodiment of the utility model is in a moving state;

[0038] Fig.14 This is a schematic diagram of the state in which the first blocking mechanism in the embodiment of the utility model is in a blocking state;

[0039] Fig.15 It is a schematic diagram of the state in which the first station of the detection mechanism in the embodiment of the utility model is in an initial state;

[0040] Fig.16 It is a schematic diagram of the state in which the first station of the detection mechanism in the embodiment of the utility model is in a blocked state. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with specific embodiments.

[0042] like Figures 2 to 16 As shown, it is a preferred embodiment of the utility model. The leak detection equipment for automobile parts in this embodiment includes a detection mechanism 2 for air tightness detection, and the detection mechanism 2 includes a lower clamp 3 for carrying the object 1 to be inspected, an upper clamp 4 for pressing the object 1 to be inspected, and an air intake mechanism 2 for supplying air to the cavity 11 to be tested of the object 1 to be inspected. The air intake mechanism 2 can be arranged on the lower clamp 3 and / or the upper clamp 4. Since the air intake mechanism 2 is relatively conventional, it is not indicated in the accompanying drawings and will not be described in detail. In addition, the upper end of the detection mechanism 2 in this embodiment is also provided with a third driving source 6 for driving the upper clamp 4. The third driving source 6 is connected to the upper clamp 4 through a movable platform 61, and then drives the upper clamp 4 to move between the initial position and the working position. Furthermore, in order to make the upper fixture 4 move more smoothly in the process of downward movement, the detection mechanism 2 also includes a fourth driving source 62 for assisting the third driving source 6 in driving the upper fixture 4, the fourth driving source 62 is connected to the upper fixture 4 through the mobile platform 61, at least two fourth driving sources 62 are arranged along the circumference of the third driving source 6, and the fourth driving sources 62 are evenly distributed along the circumference of the third driving source 6. The third driving source 6 and the fourth driving source 62 in this embodiment are both cylinders, and two fourth driving sources 62 are symmetrically arranged on both sides of the third driving source 6.

[0043] The detection mechanism 2 also includes a detection platform 22, on which the first station 221 and the second station 222 of the detection mechanism 2 are respectively arranged, the first station 221 is used to detect the first half 12 of the object 1 to be inspected, and the second station 222 is used to detect the second half 13 of the object 1 to be inspected, wherein the first half 12 is provided with a first opening 121 that is connected to the cavity 11 to be inspected, and the second half 13 is provided with a first valve interface 131 that is connected to the cavity 11 to be inspected and is T-shaped. For the sake of distinction, in this embodiment, the lower fixtures 3 located at the first station 221 and the second station 222 are named as the first lower fixture 3' and the second lower fixture 3", respectively, and similarly, the upper fixtures 4 located at the first station 221 and the second station 222 are named as the first upper fixture 4' and the second upper fixture 4", respectively. A sealing seat 31 corresponding to the cavity 11 to be tested is arranged on the upper surface of the first lower clamp 3', and a first sealing member 41 capable of sealing the first opening 121 is arranged on the first upper clamp 4'. When the first sealing member 41 blocks the first opening 121, the cavity 11 to be tested in the first half 12 can form an independent enclosed space; and a first sealing mechanism 5 capable of sealing the first valve interface 131 of the second half 13 is arranged on the second workstation 222. The first sealing mechanism 5 includes a first sealing head 51 and a driving member 52 that drives the first sealing head 51 to move along a T-shaped path, thereby sealing the first valve interface 131 to form an independent enclosed space in the cavity 11 to be tested in the second half 13.

[0044] See also Figure 5, the valve port of the first valve interface 131 in this embodiment is blocked by the second half 13. In order to block the first valve interface 131, the first blocking head 51 partially protrudes from the driving member 52 toward the first valve interface 131, and the driving member 52 includes a base 521 fixedly connected to the second lower clamp 3″, and a first movable portion 522 capable of moving along the vertical end direction of the first valve interface 131 is provided on the base 521, and a second movable portion 523 capable of moving along the horizontal end direction of the first valve interface 131 is staggered above the first movable portion 522. Through the first movable portion 522 and the second movable portion 523 of the driving member 52, the first blocking head 51 can move along a T-shaped path, so that the first blocking head 51 can block the valve interface with any direction of the valve port, which is particularly suitable for valve interfaces with blocked valve ports. Furthermore, in the present embodiment, a second valve interface 132 in T-shape and connected to the cavity 11 to be tested is further provided on the second half 13, the valve port of the second valve interface 132 faces upward, and the second upper clamp 4" also includes a second plugging head 42 capable of blocking the second valve interface 132. When the second upper clamp 4" presses the second half 13, the second plugging head 42 can block the second valve interface 132. Taking into account that the second valve interface 132 is damaged due to unbalanced force during the process of blocking the second valve interface 132, a first support member 32 is further provided on the second lower clamp 3", and the first support member 32 can conflict with the second valve interface 132 relative to the second plugging head 42, thereby supporting the second valve interface 132 during the blocking process. In order to prevent the first support member 32 from being in too close contact or not contacting the second valve interface 132 due to an error in the position of the second valve interface 132, the first support member 32 is also connected to a first driving source 321, and the first driving source 321 is fixedly connected to the second lower clamp 3", and the first driving source 321 can drive the first support member 32 to move toward the second valve interface 132, so that the first support member 32 can conflict with the second valve interface 132. In this embodiment, the first driving source 321 is an auxiliary supporting cylinder, which will stop driving after driving the first support member 32 to conflict with the second valve interface 132.

[0045] The first half 12 in this embodiment is also provided with a third valve interface 122 which is connected to the cavity 11 to be tested and is T-shaped. The horizontal end of the third valve interface 122 is upward, and the valve port of the third valve interface 122 is located on the vertical end face. A third blocking head 33 capable of blocking the third valve interface 122 is provided at the corresponding position of the first lower clamp 3'. The third blocking head 33 is connected to the first lower clamp 3' through a second driving source 34. The second driving source 34 can drive the third blocking head 33 to move toward the third valve interface 122 to block the third valve interface 122. Similar to the situation of the second valve interface 132, in order to prevent the third valve interface 122 from being damaged due to unbalanced force during the process of blocking the third valve interface 122, a second support member 43 capable of pressing the horizontal end of the third valve interface 122 is also provided on the first upper clamp 4'. When the first upper clamp 4' presses the first half 12, the second support member 43 can press the horizontal end of the third valve interface 122. When the vertical end of the third valve interface 122 is subjected to the force from the third blocking head 33, it is difficult to deflect, thereby preventing the third valve interface 122 from being damaged due to unbalanced force.

[0046] In addition, the first half 12 and / or the second half 13 in the present embodiment also has a second opening 14 facing the side, and the second opening 14 is connected to the cavity 11 to be tested. A second blocking member 35 capable of blocking the second opening 14 is also provided on the lower clamp 4. With such a design, even if the first half 12 and / or the second half 13 also has a second opening 14 facing the side, the second blocking member 35 can block the second opening 14, so that the corresponding cavity 11 to be tested of the first half 12 and / or the second half 13 forms an independent enclosed space.

[0047] The use process of the first blocking mechanism provided in this embodiment is as follows:

[0048] like Fig.12 As shown, at this time, the first plugging mechanism 5 is in the initial state, and there is a certain distance between the first plugging head 51 and the first valve interface 131; see Fig.13 At this time, the first blocking mechanism 5 is in a moving state. Fig.13 The dotted line in Fig.12 Obviously, compared with the initial state, under the drive of the second moving part 523, the first plugging head 51 has moved a certain distance along the lateral direction of the first valve interface 131, and the first plugging head 51 has been aligned with the valve port of the first valve interface 131; see Fig.14 At this time, the first blocking mechanism 5 is in a blocking state. Fig.14 The dotted line in Fig.13The first plugging head 51 is positioned in the middle. Driven by the first moving part 522, the first plugging head 51 has moved a certain distance along the vertical end direction of the first valve interface 131, and has come into contact with the valve port of the first valve interface 131 to complete the plugging.

[0049] Taking the first station 221 of the detection mechanism 2 as an example, the use process of the leakage detection device provided in this embodiment is as follows:

[0050] like Fig.15 As shown, the first station 221 is in the initial state, at which time the first half 12 is placed on the sealing seat 31, and the first upper fixture 4' is in the initial position; see Fig.16 , the first station 221 is in a blocking state, at which time the first upper fixture 4' has been lowered to the working position and pressed the first half 12, and at the same time completed the blocking work of the first opening 121, the third valve interface 122 and the second opening 14, so that the cavity 11 to be tested in the first half 12 forms an independent closed space. It should be noted that in the process of blocking the third valve interface 122, it is necessary to press the first half 12 on the first upper fixture 4', that is, after the second support member 43 supports the third valve interface 122, the third blocking head 33 can block the third valve interface 122. Similarly, in the process of blocking the second valve interface 132, it is also necessary to support the second valve interface 132 on the first support member 32 before the second blocking head 42 can block the second valve interface 132. However, there is no order relationship between the first blocking mechanism 5 and the second blocking member 35 and the upper fixture 4, and they can be performed simultaneously.

Claims

1. A leak detection device for automobile parts, comprising a detection mechanism (2) for air tightness detection, wherein the detection mechanism (2) comprises: A lower fixture (3) for placing the object to be inspected (1); An upper clamp (4) for pressing the object to be inspected (1); An air intake mechanism (21) is arranged on the lower fixture (3) and / or the upper fixture (4) and is used to supply air to the cavity (11) to be tested of the object (1) to be tested; Features: It also includes a detection platform (22), on which a first workstation (221) and a second workstation (222) of the detection mechanism (2) are respectively arranged, the first workstation (221) being used to detect a first half (12) of the object (1) to be inspected, and the second workstation (222) being used to detect a second half (13) of the object (1) to be inspected, wherein the first half (12) is provided with a first opening (121) which is communicated with the cavity (11) to be inspected, and the second half (13) is provided with a first valve interface (131) which is communicated with the cavity (11) to be inspected and is in a T-shape; The upper surface of the lower clamp (3) of the first station (221) is provided with a sealing seat (31) corresponding to the cavity (11) to be tested, and the upper clamp (4) of the first station (221) is provided with a first sealing member (41) capable of sealing the first opening (121), so that the cavity (11) to be tested in the first half (12) forms an independent closed space when the first sealing member (41) seals the first opening (121); and the second station (222) is provided with a first sealing mechanism (5) capable of sealing the first valve interface (131) of the second half (13), the first sealing mechanism (5) comprising a first sealing head (51) and a driving member (52) for driving the first sealing head (51) to move along a T-shaped path, thereby sealing the first valve interface (131) so that the cavity (11) to be tested in the second half (13) forms an independent closed space.

2. The leak detection device according to claim 1, characterized in that: The first sealing head (51) partially protrudes from the driving member (52) toward the first valve interface (131), and the driving member (52) includes a base (521) fixedly connected to the lower clamp (3), and a first movable part (522) capable of moving along the vertical end direction of the first valve interface (131) is provided on the base (521), and a second movable part (523) capable of moving along the horizontal end direction of the first valve interface (131) is staggered above the first movable part (522).

3. The leak detection device according to claim 2, characterized in that: The second half (13) is also provided with a second valve interface (132) in a T-shape and connected to the test cavity (11); the valve opening of the second valve interface (132) faces upward; and the upper fixture (4) also includes a second plugging head (42) capable of plugging the second valve interface (132).

4. The leak detection device according to claim 3, characterized in that: The lower clamp (3) is also provided with a first support member (32), and the first support member (32) can be in contact with the second valve interface (132) relative to the second plugging head (42), so as to support the second valve interface (132) during the plugging process.

5. The leak detection device according to claim 4, characterized in that: The first support member (32) is also connected to a first driving source (321), which is fixedly connected to the lower clamp (3). The first driving source (321) can drive the first support member (32) to move toward the second valve interface (132), so that the first support member (32) can conflict with the second valve interface (132).

6. The leak detection device according to claim 5, characterized in that: The first half (12) is also provided with a third valve interface (122) which is connected to the test cavity (11) and is in a T-shape. The horizontal end of the third valve interface (122) is upward, and the valve port of the third valve interface (122) is located on the vertical end surface. A third plugging head (33) capable of blocking the third valve interface (122) is provided at a corresponding position of the lower fixture (3). The third plugging head (33) is connected to the lower fixture (3) via a second driving source (34). The second driving source (34) can drive the third plugging head (33) to move toward the third valve interface (122) so as to block the third valve interface (122).

7. The leak detection device according to claim 6, characterized in that: The upper clamp (4) is also provided with a second support member (43) capable of pressing the lateral end of the third valve interface (122).

8. The leak detection device according to any one of claims 1 to 7, characterized in that: The first half (12) and / or the second half (13) is also provided with a second opening (14) facing the side, the second opening (14) is connected with the cavity (11) to be tested, and the lower fixture (3) is also provided with a second blocking member (35) capable of blocking the second opening (14).

9. The leak detection device according to claim 8, characterized in that: The upper end of the detection mechanism (2) is also provided with a third driving source (6) for driving the upper clamp (4); the third driving source (6) is connected to the upper clamp (4) via a movable platform (61), and then drives the upper clamp (4) to move between an initial position and a working position.

10. The leak detection device according to claim 9, characterized in that: The detection mechanism (2) also includes a fourth driving source (62) for assisting the third driving source in driving the upper clamp (4); the fourth driving source (62) is connected to the upper clamp (4) via the movable platform (61); at least two fourth driving sources (62) are arranged along the circumference of the third driving source (6); and the fourth driving sources (62) are evenly distributed along the circumference of the third driving source (6).

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