Jig for assisting air tightness test

Abstract

The utility model relates to the technical field of auxiliary testing devices, and discloses a jig for assisting an air tightness test, which is used for sealing a workpiece with a notch, and comprises a base frame, a first connecting piece, a second connecting piece and a third connecting piece, the base frame comprises a containing groove, the containing groove is provided with a first opening, the first opening is provided with an extension part, and the extension part extends towards the central point of the first opening; the plugging assembly comprises a plugging structure movably arranged in the containing groove, the plugging structure moves in the direction close to or away from the extending part and is provided with a first moving position, and when the workpiece is located between the plugging structure and the extending part and the plugging structure is located at the first moving position, the plugging structure can move in the first moving position. The plugging structure and the extending part are connected with the workpiece in an attached mode and seal the notch. The jig for assisting the air tightness test is simple in structure, easy to operate and capable of effectively fixing a workpiece and accurately plugging a notch.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary testing devices, and in particular relates to a fixture for auxiliary air tightness testing. Background Art

[0002] In modern manufacturing, air tightness testing of products is an important step to ensure product quality and performance, especially for those with special structures, such as workpieces with gaps, the air tightness test is a critical and complex task. When dealing with such workpieces, traditional methods often lead to errors and inefficiencies in the detection process due to the limitations of fixing and sealing technology. For example, a trigger-type quick clamp proposed in the prior art seals and fixes the workpiece by manual clamping. However, the adaptability of this fixing method is poor, and it is difficult to accurately and effectively seal the gap of the workpiece. In addition, the manual clamping method is affected by manual operation and is prone to clamping or leakage, thereby affecting the accuracy of air tightness testing. Utility Model Content

[0003] The purpose of the utility model is to provide a fixture for auxiliary air tightness testing which has a simple structure, is easy to operate, can effectively fix the workpiece and accurately seal the gap in view of the above problems in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a jig for auxiliary airtightness test, used for sealing a workpiece with a gap, the jig comprising:

[0005] A base frame, the base frame comprising a receiving groove, the receiving groove having a first opening, and an extension portion is provided at the first opening, the extension portion extending toward a center point of the first opening;

[0006] A sealing assembly, wherein the sealing assembly includes a sealing structure movably disposed in the accommodating groove, the sealing structure moves in a direction approaching or away from the extension portion, and has a first moving position. When the workpiece is between the sealing structure and the extension portion, and the sealing structure is located at the first moving position, the sealing structure and the extension portion are respectively fitted and connected to the workpiece, and form a seal for the gap.

[0007] In the above-mentioned fixture for auxiliary air tightness test, the base frame includes a plurality of vertical plates and a horizontal plate, and the vertical plates and the horizontal plate are combined to form the accommodating groove, and the first opening is arranged opposite to the horizontal plate.

[0008] In the above-mentioned fixture for auxiliary air tightness testing, there are three vertical plates, including a first vertical plate, a second vertical plate and a third vertical plate connected in sequence to form a groove shape, the first vertical plate and the third vertical plate are arranged opposite to each other and form a second opening perpendicular to the first opening.

[0009] In the above-mentioned fixture for auxiliary air tightness testing, the extension portion includes a first extension portion, a second extension portion and a third extension portion which are correspondingly arranged on the first vertical plate, the second vertical plate and the third vertical plate away from the horizontal plate direction, and the straight-line distance between the first extension portion and the third extension portion is smaller than the straight-line distance between the first vertical plate and the third vertical plate.

[0010] In the above-mentioned fixture for auxiliary air tightness testing, the sealing assembly also includes a driving structure that is detachably arranged on the horizontal plate and connected to the sealing structure through the horizontal plate. The driving structure includes a power source connected to the sealing structure, and a control valve that drives the power source to work.

[0011] In the above-mentioned fixture for auxiliary air tightness testing, the output end of the power source is connected to the blocking structure through a floating connection structure, one end of the floating connection structure is detachably connected to the blocking structure, and the other end is rotatably connected to the output end. When the output end has an axial deviation, the floating connection structure rotates around the output end under the action of gravity to avoid the axial deviation of the blocking structure.

[0012] In the above-mentioned fixture for auxiliary air tightness testing, the floating connection structure includes a rotating member detachably connected to the output end, and a first connecting member detachably connected to the blocking structure, and the rotating member is rotatably disposed in the first connecting member.

[0013] In the above-mentioned fixture for auxiliary air tightness testing, the sealing assembly also includes a guide structure, which includes a guide rod at one end movably connected to the horizontal plate and the other end passing through the horizontal plate and detachably connected to the sealing structure, and the guide rod is vertically arranged along the movement direction of the driving structure.

[0014] In the above-mentioned fixture for auxiliary air tightness testing, the sealing structure includes a second connecting member detachably connected to the guide rod and the floating connection structure respectively, and a sealing plate detachably connected to the second connecting member, and the size of the sealing plate is larger than the size of the gap.

[0015] In the above-mentioned fixture for auxiliary air tightness testing, a sealing member is further provided on the side of the sealing plate facing away from the second connecting member, and the sealing member is an annular hollow structure. When the workpiece is between the sealing structure and the extension portion, and the sealing structure is located at the first moving position, one side of the sealing member abuts against the second connecting member, and the other side abuts against the workpiece.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: by being provided on a base frame having an extension portion, and a sealing structure movably connected to the base frame, and making the sealing structure and the extension portion form a clamping fit, so that the workpiece can be stably clamped between the sealing structure and the extension portion, stable fixation and precise sealing of the workpiece with a notch are achieved, effectively improving the accuracy and stability of the workpiece sealing, thereby ensuring the accuracy and effectiveness of the workpiece during air tightness testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a fixture for assisting air tightness testing according to an embodiment of the utility model.

[0018] Figure 2 This is an exploded view of a fixture for assisting air tightness testing according to an embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the base frame in the embodiment of the utility model.

[0020] Figure 4 This is a schematic diagram of the working state of a fixture for auxiliary air tightness testing according to an embodiment of the utility model.

[0021] In all the drawings, the same reference numerals represent the same technical features, specifically: 100, base frame; 101, accommodating groove; 102, first opening; 103, second opening; 110, first vertical plate; 120, second vertical plate; 130, third vertical plate; 140, horizontal plate; 200, extension part; 210, first extension part; 220, second extension part; 230, third extension part; 300, blocking structure; 310, second connecting member; 320, blocking plate; 330, sealing member; 400, driving structure; 410, power source; 411, output end; 420, control valve; 500, floating connection structure; 510, rotating member; 511, connecting column; 512, rotating part; 520, first connecting member; 521, connecting hole; 600, guide structure; 610, guide rod; 700, handle; 800, workpiece; 810, notch. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] like Figures 1 to 4 As shown, a fixture for auxiliary air tightness test includes a base frame 100, an extension portion 200, a blocking structure 300, a driving structure 400, a floating connection structure 500 and a guide structure 600.

[0025] like Figures 1 to 4 As shown, a fixture for auxiliary airtightness test is used to seal a workpiece 800 having a notch 810, and the fixture includes:

[0026] The base frame 100 includes a receiving groove 101, the receiving groove 101 has a first opening 102, and an extension portion 200 is provided at the first opening 102, and the extension portion 200 extends toward the center point of the first opening 102;

[0027] The plugging assembly includes a plugging structure 300 movably disposed in the receiving groove 101, the plugging structure 300 moves in a direction close to or away from the extension part 200, and has a first moving position. When the workpiece 800 is between the plugging structure 300 and the extension part 200, and the plugging structure 300 is in the first moving position, the plugging structure 300 and the extension part 200 are respectively connected with the workpiece 800 and form a seal with the gap 810. By being disposed on the base frame 100 with the extension part 200, and making the plugging structure 300 and the extension part 200 form a clamping fit, so that the workpiece 800 can be stably clamped between the plugging structure 300 and the extension part 200, the workpiece 800 with the gap 810 is stably fixed and accurately blocked, which effectively improves the accuracy and stability of the seal of the workpiece 800, thereby ensuring the accuracy and effectiveness of the airtightness test of the workpiece 800.

[0028] like Figures 1 to 4 As shown, in this embodiment, the base frame 100 is rectangular, and includes a plurality of vertical plates and a horizontal plate 140, and the vertical plates are connected in sequence and together with the horizontal plate 140 form a rectangular accommodating groove 101, and the accommodating groove 101 has a first opening 102, and the first opening 102 is arranged opposite to the horizontal plate 140 for accommodating the blocking structure 300 and the workpiece 800.

[0029] The number of the vertical plates can be four, connected end to end in a rectangular shape. Preferably, in the present embodiment, the number of the vertical plates is three, including a first vertical plate 110, a second vertical plate 120 and a third vertical plate 130 connected in sequence in a groove shape. The first vertical plate 110 and the third vertical plate 130 are arranged opposite to each other and are of the same size, and are formed with a second opening 103 perpendicular to the first opening 102. The size of the second opening 103 is adapted to the size of the second vertical plate 120. On the one hand, it is convenient for the workpiece 800 to be horizontally placed between the blocking structure 300 and the extension 200 through the second opening 103, which greatly improves the convenience of placing the workpiece 800; on the other hand, it is convenient for the blocking assembly to be assembled. In addition, the second opening 103 can also be used to place workpieces 800 of different sizes, that is, it can adapt to the situation where the thickness of the clamped parts of different workpieces 800 are different.

[0030] In this embodiment, the horizontal plate 140 is arranged horizontally and is detachably connected to the first vertical plate 110, the second vertical plate 120 and the third vertical plate 130, respectively, which improves the convenience of assembling the base frame 100. The horizontal plate 140 extends horizontally away from the second vertical plate 120 and is formed with an extended end, on which other components of the blocking assembly are placed.

[0031] In order to prevent the workpiece 800 from moving after being sealed during the testing process, in the present embodiment, an extension portion 200 is provided at the first opening 102, and the extension portion 200 extends toward the center point of the first opening 102 to cooperate with the sealing structure 300 in the receiving groove 101 to clamp the workpiece 800, thereby preventing the workpiece 800 from moving after being sealed, and effectively ensuring the stability of the workpiece 800 after being sealed.

[0032] Preferably, in this embodiment, the extension part 200 includes a first extension part 210, a second extension part 220 and a third extension part 230 which are arranged in the direction of the first vertical plate 110, the second vertical plate 120 and the third vertical plate 130 away from the horizontal plate 140, and the straight-line distance between the first extension part 210 and the third extension part 230 is smaller than the straight-line distance between the first vertical plate 110 and the third vertical plate 130. It is ensured that when the workpiece 800 is placed in the receiving groove 101, its clamped side can be clamped between the extension part 200 and the blocking structure 300, and the contact area between the extension part 200 and the workpiece 800 is effectively expanded, further ensuring the stability and reliability of the workpiece 800 and the blocking structure 300 when they are fitted, and at the same time, the stability of the placement of the fixture when it is not in working state is ensured.

[0033] Preferably, in this embodiment, the first extension portion 210 , the second extension portion 220 and the third extension portion 230 are integrally formed.

[0034] In order to seal the notch 810 of the workpiece 800, in this embodiment, a sealing assembly is provided, which includes a sealing structure 300 movably arranged in the accommodating groove 101, the sealing structure 300 vertically moves in a direction close to or away from the extension part 200, and has a first moving position. When the workpiece 800 is between the sealing structure 300 and the extension part 200, and the sealing structure 300 is located at the first moving position, the sealing structure 300 presses the workpiece 800, so that the sealing structure 300 and the extension part 200 are respectively connected to the workpiece 800, and the notch 810 is sealed. Through this clamping cooperation, the stability of the workpiece 800 sealing is effectively guaranteed.

[0035] In this embodiment, the blocking structure 300 further includes a driving structure 400 detachably disposed on the transverse plate 140 and connected to the blocking structure 300 through the transverse plate 140. The driving structure 400 includes a power source 410 connected to the blocking structure 300 and a control valve 420 for driving the power source 410. Through the introduction and coordination of the power source 410 and the control valve 420, the automatic control of the blocking structure 300 is realized. Compared with the manual clamping blocking method, the blocking is more stable and is less prone to clamping or air leakage.

[0036] In this embodiment, the power source 410 is a driving cylinder or a hydraulic cylinder or a linear motor. Preferably, in this embodiment, the power source 410 is a driving cylinder. The control valve 420 is a manual control valve 420 or a solenoid valve. Preferably, in this embodiment, the control valve 420 is a manual control valve 420. The overall structure of the fixture is effectively simplified, and the production cost of the fixture is reduced.

[0037] In this embodiment, the output end 411 of the power source 410 is connected to the blocking structure 300 via a floating connection structure 500. One end of the floating connection structure 500 is detachably connected to the blocking structure 300, and the other end is rotatably connected to the output end 411. When the axis of the output end 411 deviates, the floating connection structure 500 rotates around the output end 411 under the action of gravity to avoid the axis of the blocking structure 300 from deviating. This allows the blocking structure 300 to adapt to the deviation of the power source 410, effectively avoiding the deviation of the first connection member 520 when the blocking structure 300 blocks the gap 810.

[0038] In this embodiment, the floating connection structure 500 includes a rotating member 510 detachably connected to the output end 411, and a cylindrical first connection member 520 detachably connected to the blocking structure 300, and the rotating member 510 is rotatably disposed in the first connection member 520. The rotating member 510 is rotatably connected to the first connection member 520, thereby realizing a rotatable connection between the floating connection structure 500 and the output end 411, thereby realizing a movable connection between the power source 410 and the blocking structure 300, and enabling the floating connection structure 500 to correct deviation when an abnormality occurs in the driving of the output end 411.

[0039] Preferably, in this embodiment, the rotating member 510 is T-shaped, and includes a connecting column 511 threadedly connected to the output end 411, and a rotating portion 512 integrally formed with the connecting column 511 and rotatably located in the first connecting member 520. The use of threaded connection and rotatable connection not only ensures the stability of the connection, but also provides the necessary rotational freedom, thereby improving the overall adaptability and stability of the system. The first connecting member 520 is cylindrical, and is provided with a plurality of annularly arranged connecting holes 521 along the axis to ensure the reliability and stability of the connection with the blocking structure 300.

[0040] In this embodiment, the blocking structure 300 further includes a guide structure 600, which includes a guide rod 610 having one end movably connected to the horizontal plate 140 and the other end passing through the horizontal plate 140 and detachably connected to the blocking structure 300, and the guide rod 610 is arranged vertically along the movement direction of the driving structure 400. The linearity and stability of the blocking structure 300 during the movement are effectively ensured, and the accuracy and reliability of the blocking are improved.

[0041] Preferably, in this embodiment, the guide rods 610 are provided in four groups, which are respectively connected to the four corners of the blocking structure 300 , so as to further ensure the stability of the movement of the blocking structure 300 .

[0042] In this embodiment, the blocking structure 300 includes a second connector 310 connected to the guide rod 610 and the first connector 520 of the floating connection structure 500, and a blocking plate 320 disposed on the second connector 310 away from the first connector 520 and detachably connected to the second connector 310. The size of the blocking plate 320 is larger than the size of the gap 810 of the workpiece 800, which effectively ensures the comprehensiveness of the blocking of the gap 810. In addition, the split design of the second connector 310 and the blocking plate 320 can facilitate users to replace blocking plates 320 of different specifications according to workpieces 800 of different sizes, effectively improving the scope of application of the fixture.

[0043] Preferably, in this embodiment, the second connecting member 310 is in the shape of a rectangular plate.

[0044] In this embodiment, a sealing member 330 is further provided on the sealing plate 320 in a direction away from the second connecting member 310. The sealing member 330 is an annular hollow structure. When the workpiece 800 is between the sealing structure 300 and the extension portion 200, and the sealing structure 300 is in the first moving position, one side of the sealing member 330 abuts against the second connecting member 310 and the other side abuts against the workpiece 800, thereby further ensuring the airtightness of the workpiece 800 when it is sealed.

[0045] In this embodiment, the sealing member 330 is a sealing rubber, which is connected to the sealing plate 320 by gluing, thereby effectively ensuring the airtightness of the connection between the sealing plate 320 and the workpiece 800.

[0046] like Figure 1 As shown, in this embodiment, the blocking structure 300 also has a second moving position. When it is in the second moving position, the blocking plate 320 and the sealing member 330 are separated from the workpiece 800, and a movable gap is formed for installing or disassembling the workpiece 800.

[0047] In this embodiment, a handle 700 is further included on the horizontal plate 140. The handle is N-shaped and is disposed in a direction away from the extension end of the horizontal plate 140 to facilitate users to easily take the fixture.

[0048] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0049] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A fixture for auxiliary air tightness test, used for sealing a workpiece with a gap, characterized in that: The fixtures include: A base frame, the base frame comprising a receiving groove, the receiving groove having a first opening, and an extension portion is provided at the first opening, the extension portion extending toward a center point of the first opening; A sealing assembly, wherein the sealing assembly includes a sealing structure movably disposed in the accommodating groove, the sealing structure moves in a direction approaching or away from the extension portion, and has a first moving position. When the workpiece is between the sealing structure and the extension portion, and the sealing structure is located at the first moving position, the sealing structure and the extension portion are respectively fitted and connected to the workpiece, and form a seal for the gap.

2. A jig for assisting air tightness testing according to claim 1, characterized in that: The base frame includes a plurality of vertical plates and a horizontal plate, and the vertical plates and the horizontal plate are combined to form the accommodating groove, and the first opening is arranged opposite to the horizontal plate.

3. The fixture for assisting air tightness testing according to claim 2, characterized in that: There are three vertical plates, including a first vertical plate, a second vertical plate and a third vertical plate which are sequentially connected to form a groove shape. The first vertical plate and the third vertical plate are arranged opposite to each other and form a second opening perpendicular to the first opening.

4. The fixture for assisting air tightness testing according to claim 3, characterized in that: The extension portion includes a first extension portion, a second extension portion and a third extension portion which are correspondingly arranged on the first vertical plate, the second vertical plate and the third vertical plate away from the horizontal plate, and a straight-line distance between the first extension portion and the third extension portion is smaller than a straight-line distance between the first vertical plate and the third vertical plate.

5. The fixture for assisting air tightness testing according to claim 2, characterized in that: The blocking assembly also includes a driving structure detachably disposed on the transverse plate and connected to the blocking structure through the transverse plate. The driving structure includes a power source connected to the blocking structure and a control valve for driving the power source to work.

6. The fixture for assisting air tightness testing according to claim 5, characterized in that: The output end of the power source is connected to the blocking structure via a floating connection structure. One end of the floating connection structure is detachably connected to the blocking structure, and the other end is rotatably connected to the output end. When the output end has an axial deviation, the floating connection structure rotates around the output end under the action of gravity to avoid the axial deviation of the blocking structure.

7. The fixture for assisting air tightness testing according to claim 6, characterized in that: The floating connection structure includes a rotating member detachably connected to the output end, and a first connecting member detachably connected to the blocking structure, and the rotating member is rotatably disposed in the first connecting member.

8. The fixture for assisting air tightness testing according to claim 6, characterized in that: The blocking assembly also includes a guide structure, which includes a guide rod with one end movably connected to the transverse plate and the other end passing through the transverse plate and detachably connected to the blocking structure, and the guide rod is vertically arranged along the movement direction of the driving structure.

9. The fixture for assisting air tightness testing according to claim 8, characterized in that: The blocking structure includes a second connecting member detachably connected to the guide rod and the floating connecting structure respectively, and a blocking plate detachably connected to the second connecting member, and the size of the blocking plate is larger than the size of the gap.

10. The fixture for assisting air tightness testing according to claim 9, characterized in that: A sealing member is also provided on the side of the sealing plate facing away from the second connecting member. The sealing member is an annular hollow structure. When the workpiece is between the sealing structure and the extending portion and the sealing structure is located at the first moving position, one side of the sealing member abuts against the second connecting member and the other side abuts against the workpiece.

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