Air tightness detection device

Abstract

The utility model discloses an air tightness detection device which comprises a pressing mechanism, a supporting mechanism and a detection table, the supporting mechanism is located below a product to be detected, the product to be detected is located below the pressing mechanism, and the pressing mechanism and the supporting mechanism are both installed on the detection table; the pressing mechanism comprises a pressing plate, a plurality of adjusting pipes and a plurality of adjusting rods, the adjusting rods are located on the outer side of the pressing plate, the outer wall of each adjusting rod is provided with a circle of concave ring which is concave inwards, the pressing plate is provided with a groove, the concave ring is clamped in the groove, the adjusting rods are in threaded connection with the adjusting pipes, and the adjusting pipes are in threaded connection with the pressing plate. The adjusting pipe can slide along the cross rod, the two ends of the cross rod are fixed to supporting rods, and the supporting rods are fixed to the detection table. According to the utility model, the adjusting rod is rotated to enable the pressing plate to press the product, thereby facilitating the detection of the airtightness of the to-be-detected product.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal detection, in particular to an air tightness detection device. Background Art

[0002] For products with strict airtightness requirements, airtightness testing is required to screen out defective products that do not meet the airtightness requirements. Only the remaining products that meet the airtightness requirements can be delivered to the purchaser for use. Alternatively, after the product is produced, the batch of products is sampled and only when the sample pass rate of the products meets the requirements during the sampling process can the products be delivered to the purchaser for use.

[0003] Due to the high strength and good toughness of metal materials, they are widely used in automobiles, such as car battery covers, metal bipolar plates, etc. It is inevitable that the quality of metal plates is unqualified due to production processes and bumps, and the existing detection devices are not very convenient for tightening and adjusting the metal plates. Utility Model Content

[0004] The utility model mainly solves the technical problem of providing an air tightness detection device, which can detect the air tightness of the product to be detected by rotating the adjusting rod to make the pressing plate press the product.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: an airtightness detection device, comprising a pressing mechanism, a supporting mechanism and a detection platform, wherein the supporting mechanism is located below the product to be detected, the product to be detected is located below the pressing mechanism, and the pressing mechanism and the supporting mechanism are both installed on the detection platform;

[0006] The clamping mechanism includes a pressing plate, a plurality of adjusting tubes and a plurality of adjusting rods, wherein the adjusting rod is located on the outer side of the pressing plate, the outer wall of the adjusting rod is provided with a circle of inwardly concave ring, the pressing plate is provided with a groove, the groove is clamped in the concave ring, the adjusting rod is threadedly connected to the adjusting tube, the adjusting tube can slide along the cross bar, the two ends of the cross bar are fixed to the support rod, the support rod is fixed to the testing platform, and the adjusting rod is rotated to make the pressing plate clamp the product, so as to facilitate the detection of the air tightness of the product to be inspected;

[0007] The lower surface of the pressing plate is provided with a plurality of inwardly concave air cavities, a sealing ring is installed on the outer periphery of each of the air cavities and located on the lower surface of the pressing plate, the pressing plate is provided with air holes corresponding to the air cavities one by one, and the air cavities are connected with the air holes;

[0008] The support mechanism includes sliders located on both sides of the product to be inspected, the sliders are provided with support plates, the support plates are located below the product to be inspected, the inspection platform is provided with a slide groove, the sliders are provided with a sliding part, the sliding part is located in the slide groove, and the two sliders can move closer to or farther from each other along the direction of the slide groove to adapt to products to be inspected of different sizes.

[0009] The air hole is connected to an air pipe, and the air pipe is connected to an air tightness detector. First, air is pumped into the air cavity through the air hole, and then the pressure is maintained to detect whether there is leakage, so as to judge the air tightness of the product to be inspected.

[0010] Furthermore, a connecting hole is provided on the upper portion of the adjusting tube, the connecting hole is sleeved on the cross bar, and a screw passes through the adjusting tube and is tightly pressed against the cross bar.

[0011] Furthermore, a plurality of the adjusting rods are symmetrically distributed on both sides of the pressing plate.

[0012] Furthermore, the cross bar is a special-shaped bar, and the cross section of the cross bar is a square.

[0013] Furthermore, the support mechanism also includes a connecting rod and a spring, one end of the connecting rod is provided with a protrusion, the other end of the connecting rod passes through the sliding part and is connected to the side wall of the slide groove, the spring is sleeved on the connecting rod, and the spring is located between the sliding part and the side wall of the slide groove.

[0014] Furthermore, the slide groove has a structure that is larger at the bottom and smaller at the top.

[0015] The beneficial effects of the present invention include at least the following points:

[0016] The clamping mechanism of the utility model comprises a pressing plate, a plurality of adjusting tubes and a plurality of adjusting rods. The adjusting rod is located at the outer side of the pressing plate. The outer wall of the adjusting rod is provided with a circle of inwardly concave ring. The pressing plate is provided with a groove. The groove is clamped in the concave ring. The adjusting rod is threadedly connected to the adjusting tube. The adjusting tube can slide along the cross bar. The two ends of the cross bar are fixed to the support rod. The support rod is fixed to the inspection table. The adjusting rod is rotated to make the pressing plate clamp the product, so as to facilitate the inspection of the air tightness of the product to be inspected. It is worth noting that by setting the concave ring of the adjusting rod and the groove of the pressing plate, the pressing plate can be fixed or replaced to adapt to the products to be inspected of different sizes.

[0017] The lower surface of the pressing plate of the utility model is provided with a plurality of inwardly recessed air cavities, and a sealing ring is installed on the periphery of each air cavity and located on the lower surface of the pressing plate. The pressing plate is provided with air holes corresponding to the air cavities one by one, and the air cavities are connected to the air holes. When performing an air tightness test, air is first pumped into the air cavity through the air holes, and then the pressure is maintained to detect whether there is leakage, thereby judging the air tightness of the product to be tested. It is worth noting that the number of air cavities can be selected according to the size of the product to be tested, thereby improving the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the testing platform of the utility model;

[0020] Figure 3 The utility model Figure 2 A magnified view of point A;

[0021] Figure 4 It is a structural schematic diagram of the pressing plate and the sealing ring of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the regulating tube and regulating rod of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a slider of the utility model;

[0024] The parts in the accompanying drawings are marked as follows:

[0025] 11. Pressing plate; 111. Groove; 112. Air cavity; 113. Air hole; 12. Adjusting tube; 121. Connecting hole; 13. Adjusting rod; 131. Concave ring; 132. Nut segment; 14. Cross bar; 15. Sealing ring; 16. Screw; 17. Support rod; 21. Slider; 22. Support plate; 23. Sliding part; 24. Connecting rod; 241. Boss; 25. Spring; 3. Inspection table; 31. Slide; 4. Product to be inspected. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0027] Embodiment: An airtightness detection device, such as Figure 1 As shown, it includes a clamping mechanism, a supporting mechanism and a testing platform 3, wherein the supporting mechanism is located below the product to be tested 4, and the product to be tested 4 is located below the clamping mechanism, and the clamping mechanism and the supporting mechanism are both installed on the testing platform 3;

[0028] The clamping mechanism includes a pressing plate 11, a plurality of adjusting tubes 12 and a plurality of adjusting rods 13. The adjusting rods 13 are located outside the pressing plate 11. The outer wall of the adjusting rods 13 is provided with a circle of inwardly concave rings 131. The pressing plate 11 is provided with grooves 111. The grooves 111 are clamped in the grooves 131. Figure 5As shown, the adjusting rod 13 is threadedly connected to the adjusting tube 12, and the adjusting tube 12 can slide along the cross bar 14. Both ends of the cross bar 14 are fixed to the support rod 17, and the support rod is fixed to the detection platform 3;

[0029] In this embodiment, the adjusting rod has a nut section 132, so as to facilitate the rotation of the adjusting rod.

[0030] like Figure 4 As shown, the lower surface of the pressing plate 11 is provided with a plurality of inwardly concave air cavities 112, and a sealing ring 15 is installed on the outer periphery of each of the air cavities 112 and located on the lower surface of the pressing plate 11, and the pressing plate 11 is provided with air holes 113 corresponding to the air cavities 112 one by one, and the air cavities 112 are connected to the air holes 113;

[0031] like Figure 3 As shown, the support mechanism includes sliders 21 located on both sides of the product to be inspected 4, and the sliders 21 are provided with support plates 22, and the support plates 22 are located below the product to be inspected 4, as shown in FIG. Figure 2 As shown, the detection platform 3 is provided with a slide 31. Figure 6 As shown, the slider 21 is provided with a sliding portion 23, and the sliding portion 23 is located in a slide groove 31. The two sliders 21 can approach or move away from each other along the direction of the slide groove 31 to accommodate products 4 to be inspected of different sizes. In a specific implementation, the upper surface of the slider is higher than the lower surface of the product to be inspected.

[0032] The air hole 113 is connected to the air pipe, and the air pipe is connected to the air tightness detector;

[0033] As an alternative to the present embodiment, the air pipe may be connected to an air pump, and then a pressure gauge and an air valve may be provided on the air pipe. After the air pump pumps air into the air cavity, the air valve is closed, and then the changes in the pressure gauge are observed to determine the air tightness of the product to be inspected.

[0034] A connecting hole 121 is formed on the upper portion of the adjusting tube 12 . The connecting hole 121 is sleeved on the cross bar 14 . The screw 16 passes through the adjusting tube 12 and is tightly pressed against the cross bar 14 .

[0035] A plurality of adjusting rods 13 are symmetrically distributed on both sides of the pressing plate 11 .

[0036] The cross bar 14 is a special-shaped bar, and the cross section of the cross bar 14 is a square, but not limited thereto, and the cross section may also be a polygon such as a rectangle or a triangle.

[0037] The support mechanism also includes a connecting rod 24 and a spring 25. One end of the connecting rod 24 is provided with a protrusion 241, and the other end of the connecting rod 24 passes through the sliding part 23 and is connected to the side wall of the sliding groove 31. The spring 25 is sleeved on the connecting rod 24, and the spring 25 is located between the sliding part 23 and the side wall of the sliding groove 31.

[0038] The slide groove 31 is a structure that is larger at the bottom and smaller at the top.

[0039] The working principle of the utility model is as follows: the product to be inspected is placed between two sliders and above a support plate. The slider approaches the product to be inspected under the action of a spring to position the product to be inspected. The adjusting rod is rotated. Due to the cooperation between the concave circle of the adjusting rod and the groove of the pressing plate, the pressing plate presses the product. The air tightness detector pumps air into the air cavity through the air pipe to detect whether there is air leakage, thereby judging the air tightness of the product to be inspected.

[0040] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An airtightness detection device, characterized in that: It comprises a clamping mechanism, a supporting mechanism and a testing platform (3), wherein the supporting mechanism is located below a product to be tested (4), the product to be tested is located below the clamping mechanism, and the clamping mechanism and the supporting mechanism are both installed on the testing platform; The clamping mechanism comprises a pressing plate (11), a plurality of adjusting tubes (12) and a plurality of adjusting rods (13), wherein the adjusting rods are located on the outside of the pressing plate, the outer wall of the adjusting rods is provided with a circle of inwardly recessed concave ring (131), the pressing plate is provided with a groove (111), the groove is clamped in the concave ring, the adjusting rods are threadedly connected to the adjusting tubes, the adjusting tubes can slide along the cross bar (14), the two ends of the cross bar are fixed to the support rods (17), and the support rods are fixed to the detection platform; The lower surface of the pressing plate is provided with a plurality of inwardly recessed air cavities (112), a sealing ring (15) is installed on the outer periphery of each of the air cavities and located on the lower surface of the pressing plate, the pressing plate is provided with air holes (113) corresponding to the air cavities one by one, and the air cavities are connected to the air holes; The support mechanism comprises sliders (21) located on both sides of the product to be inspected, the sliders are provided with support plates (22), the support plates are located below the product to be inspected, the inspection platform is provided with a slide groove (31), the sliders are provided with a sliding portion (23), the sliding portion is located in the slide groove, and the two sliders can approach or move away from each other along the direction of the slide groove to accommodate products to be inspected of different sizes.

2. The airtightness detection device according to claim 1, characterized in that: The air hole is connected to an air pipe, and the air pipe is connected to an air tightness detector.

3. The airtightness detection device according to claim 1, characterized in that: A connecting hole (121) is provided on the upper portion of the adjusting tube, the connecting hole is sleeved on the cross bar, and a screw (16) passes through the adjusting tube and is tightly pressed against the cross bar.

4. The airtightness detection device according to claim 1, characterized in that: A plurality of adjusting rods are symmetrically distributed on both sides of the pressing plate.

5. The airtightness detection device according to claim 1, characterized in that: The cross bar is a special-shaped bar, and the cross section of the cross bar is a square.

6. The airtightness detection device according to claim 1, characterized in that: The support mechanism also includes a connecting rod (24) and a spring (25), one end of the connecting rod is provided with a protrusion (241), the other end of the connecting rod passes through the sliding portion and is connected to the side wall of the sliding groove, the spring is sleeved on the connecting rod, and the spring is located between the sliding portion and the side wall of the sliding groove.

7. The airtightness detection device according to claim 1, characterized in that: The slide chute is a structure that is larger at the bottom and smaller at the top.

Images