Jig for testing air tightness of knob

Abstract

The utility model aims to provide a knob air tightness test fixture, which comprises a supporting seat, a sealing assembly and a material pushing assembly, the sealing assembly comprises a material loading block, a pressing driving piece and a buckling block, the material loading block is detachably arranged on the supporting seat, a plurality of material loading holes are formed in the material loading block, a sealing ring is arranged in each material loading hole, and the material pushing assembly is arranged on the supporting seat. The pressing driving part is arranged on the supporting seat, the buckling block is arranged on an output shaft of the pressing driving part, the buckling block is located above the material carrying block, an air injection hole is formed in the buckling block, and the pressing driving part is used for driving the buckling block to descend so that the material carrying block and the buckling block can jointly define a closed cavity; the material pushing driving piece is arranged on the supporting base, the material pushing block is arranged on an output shaft of the material pushing driving piece, and the material pushing block is located below the material carrying block. Therefore, the knob airtightness test fixture is simple in structure and convenient to operate, and can reliably detect whether the knob has a leak hole or not.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of test tool, in particular to a knob air tightness test fixture. BACKGROUND

[0002] As Figure 5 It is a copper structure, which is made by casting and removing the excess part by turning process.

[0003] However, the above-mentioned knob 20 has the following problems in actual manufacturing: due to the casting process, pores are inevitably generated in the knob 20. In the turning process, once the turning is performed to the pore position, the knob 20 will be internally penetrated. Since the diameter of the pores is very small, it is difficult to directly distinguish with the naked eye. Once the knob 20 with internal penetration through the pores is installed in the water valve, even if the sealing ring is sleeved on the knob 20, water will still seep out between the pores, causing the knob 20 to leak. Therefore, in order to detect whether the knob 20 has the problem of pore penetration, the knob air tightness test fixture of the present application is proposed. SUMMARY

[0004] The utility model discloses a knob air tightness test fixture which can detect whether the knob leaks.

[0005] The utility model discloses the technical scheme adopted is:

[0006] A knob air tightness test fixture, comprising:

[0007] A support seat;

[0008] A sealing assembly, the sealing assembly comprises a carrier block, a pressing driving element and a buckle block, the carrier block is detachably arranged on the support seat, a plurality of carrier holes are formed in the carrier block, and a sealing ring is arranged in each carrier hole; the pressing driving element is arranged on the support seat; the buckle block is arranged on the output shaft of the pressing driving element, and the buckle block is located above the carrier block; an air injection hole is formed in the buckle block; and the pressing driving element is used to drive the buckle block to descend, so that the carrier block and the buckle block jointly form a closed cavity.

[0009] A pushing assembly, the pushing assembly comprises a pushing driving element and a pushing block, the pushing driving element is arranged on the support seat, and the pushing block is arranged on the output shaft of the pushing driving element and located below the carrier block.

[0010] Optionally, the buckle block is provided with an inflation groove on one side of the load block, the inflation groove is communicated with the gas injection hole, and the inner side wall of the inflation groove is used to jointly enclose the closed cavity with the load block when the buckle block is buckled with the load block.

[0011] Optionally, a stepped groove is arranged on the inner side wall of the inflation groove, and the stepped groove is used to abut against the top surface of the load block.

[0012] Optionally, a sealing ring is arranged on the outer side wall of the load block, and the sealing ring is used to abut against the inner side wall of the stepped groove.

[0013] Optionally, when the stepped groove and the knob abut against the top surface of the load block, a space is formed between the top surface of the knob and the inner bottom wall of the inflation groove.

[0014] Optionally, an emptying groove is further arranged on the inner bottom wall of the inflation groove.

[0015] Optionally, a limiting groove is arranged on the inner side wall of the load hole, and the sealing ring is arranged in the limiting groove.

[0016] Optionally, a clamping seat is arranged on the support seat, a sliding groove is transversely arranged in the clamping seat, the load block is detachably arranged in the sliding groove, and the pushing driving member is arranged below the sliding groove.

[0017] Optionally, the downward pressing driving member and the pushing driving member are both air cylinders.

[0018] Optionally, a handle is further arranged on the load block.

[0019] The rotary knob airtightness testing jig has the advantages that:

[0020] The rotary knob airtightness testing jig has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1Structure schematic view of the knob airtightness test fixture of one embodiment of the present application is shown in the figure.

[0022] Figure 2 For Figure 1 Structure schematic view of the cross section of the knob airtightness test fixture is shown in the figure.

[0023] Figure 3 For Figure 1 Structure schematic view of the cross section of the knob airtightness test fixture in another state is shown in the figure.

[0024] Figure 4 Structure schematic view of the buckle of one embodiment of the present application is shown in the figure.

[0025] Figure 5 Structure schematic view of a knob.

[0026] Explanation of reference signs:

[0027] 10, knob airtightness test fixture; 100, support seat; 200, sealing assembly; 300, pushing assembly; 210, loading block; 220, downward pressing driving element; 230, buckle; 211, loading hole; 240, sealing ring; 231, air injection hole; 310, pushing driving element; 320, pushing block; 232, inflation groove; 233, step groove; 250, sealing ring; 234, emptying groove; 212, limiting groove; 400, clamping seat; 410, sliding groove; 260, handle; 20, knob; 21, ring groove; 22, convex rib. Specific implementation

[0028] In order to facilitate understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings.

[0029] As Figures 1 to 5As shown, a knob air tightness test fixture 10 comprises a support base 100, a sealing assembly 200 and a pushing assembly 300. The sealing assembly 200 comprises a material loading block 210, a downward driving member 220 and a clamping block 230. The material loading block 210 is detachably arranged on the support base 100. A plurality of material loading holes 211 are formed on the material loading block 210. A sealing ring 240 is arranged in each material loading hole 211. The downward driving member 220 is arranged on the support base 100. The clamping block 230 is arranged on an output shaft of the downward driving member 220 and is located above the material loading block 210. An air injection hole 231 is formed on the clamping block 230. The downward driving member 220 is used to drive the clamping block 230 to descend so that the material loading block 210 and the clamping block 230 jointly form a closed cavity. The pushing assembly 300 comprises a pushing driving member 310 and a pushing block 320. The pushing driving member 310 is arranged on the support base 100. The pushing block 320 is arranged on an output shaft of the pushing driving member 310 and is located below the material loading block 210.

[0030] It should be noted that the material loading block 210 is used to fix the knob 20. Specifically, a plurality of material loading holes 211 are formed on the material loading block 210. In an embodiment, seven material loading holes 211 are formed. The seven material loading holes 211 are arranged with intervals. A sealing ring 240 is arranged in each material loading hole 211. The inner diameter of the sealing ring 240 is smaller than the outer diameter of the knob 20. Further, in an embodiment, two ring grooves 21 are formed on the knob 20. Therefore, when the knob 20 is inserted into the material loading hole 211 and pressed, the sealing ring 240 is sleeved on the convex edge 22 between the two ring grooves 21. In this way, one of the ring grooves 21 of the knob 20 can also be reliably detected for air tightness. The working principle of the knob air tightness test fixture 10 of the present application will be described below. After the knob 20 is inserted into each material loading hole 211, the clamping block 230 is driven to descend by the downward driving member 220. After the clamping block 230 pushes each knob 20 inserted into each material loading hole 211, the clamping block 230 is clamped and fixed with the material loading block 210, so that each knob 20 is sealed. Then, gas is injected from the air injection hole 231. Then, whether the air pressure between the clamping block 230 and the material loading block 210 becomes smaller is detected. Once it becomes smaller, it means that there is a leak in the knob 20. If the air pressure does not change, it means that the knob 20 is not hollow and has good air tightness. After the detection is completed, the clamping block 230 is lifted to reset by the downward driving member 220. The pushing block 320 is lifted by the pushing driving member 310, so that the pushing block 320 pushes each knob 20 out of each material loading hole 211 of the material loading block 210, to complete the material removal operation. In this way, the knob air tightness test fixture 10 of the present application has simple structure and is convenient to operate. Whether the knob 20 has a leak can be reliably detected.

[0031] As Figure 2 and Figure 4As shown, in an embodiment, the buckle 230 is provided with an inflation groove 232 on a side of the buckle 230 close to the carrier block 210, and the inflation groove 232 is in communication with the injection hole 231, so that when the buckle 230 is buckled with the carrier block 210, the inner side wall of the inflation groove 232 and the carrier block 210 jointly form a sealed cavity.

[0032] Thus, when the buckle 230 is lowered by the downward driving member 220, the inner side wall of the inflation groove 232 also pushes the knob 20, so that the knob 20 is pressed into the carrier hole 211. When the buckle 230 is buckled with the carrier block 210, the inflation groove 232 and the carrier block 210 jointly form a sealed cavity.

[0033] As shown, Figure 2 and Figure 4 As shown, in an embodiment, the inner side wall of the inflation groove 232 is provided with a stepped groove 233, and the stepped groove 233 is used to abut against the top surface of the carrier block 210.

[0034] Thus, through the stepped groove 233, the buckle 230 is facilitated to be buckled on the outer side of the carrier block 210, and the stepped groove 233 abuts against the top surface of the carrier block 210, so that the buckle 230 is completely buckled with the carrier block 210.

[0035] As shown, Figure 1 As shown, in an embodiment, the outer side wall of the carrier block 210 is sleeved with a sealing ring 250, and the sealing ring 250 is used to abut against the inner side wall of the stepped groove 233. Thus, through the sealing ring 250, the buckle 230 and the carrier block 210 can be reliably sealed.

[0036] In an embodiment, when the stepped groove 233 and the knob 20 both abut against the top surface of the carrier block 210, there is a gap between the top surface of the knob 20 and the inner bottom wall of the inflation groove 232.

[0037] It should be noted that when the buckle 230 is lowered to be close to the carrier block 210, the inner side wall of the inflation groove 232 pushes the knob 20 to insert the knob 20 into the carrier hole 211. When the injection hole 231 injects gas, the gas pushes the knob 20, so that the knob 20 slides along the carrier hole 211 and finally abuts against the top surface of the carrier block 210, and there is a gap between the top surface of the knob 20 and the inner bottom wall of the inflation groove 232. Thus, when the airtightness test is completed and the buckle 230 is lifted by the downward driving member 220, since the inner bottom wall of the inflation groove 232 and the knob 20 are in a separated state, the buckle 230 and the knob 20 will not be attracted due to negative pressure, so that the buckle 230 will not accidentally pull out the knob 20 from the carrier hole 211.

[0038] As shown, Figure 4As shown, in an embodiment, an emptying groove 234 is further formed on the inner bottom wall of the air filling groove 232. In this way, by forming the emptying groove 234, when the gas injection hole 231 injects the gas, the gas can contact any part of the knob 20 located in the sealed cavity, so that the air tightness of the knob 20 can be reliably tested.

[0039] As shown, Figure 2 As shown, in an embodiment, a limiting groove 212 is formed on the inner side wall of the material loading hole 211, and the sealing ring 240 is located in the limiting groove 212. In this way, by limiting the sealing ring 240 in the specified position in the material loading hole 211 through the limiting groove 212, when the knob 20 is inserted into the material loading hole 211, the sealing ring 240 can reliably be sleeved on the convex rib 22 of the knob 20.

[0040] As shown, Figure 1 As shown, in an embodiment, a clamping seat 400 is arranged on the support seat 100, a sliding groove 410 is transversely formed in the clamping seat 400, the material loading block 210 is detachably arranged in the sliding groove 410, and the material pushing driving member 310 is located below the sliding groove 410.

[0041] It should be noted that since the knob 20 has various models, the sizes of the knobs 20 of different models are different. In order to facilitate the air tightness test of the knobs 20 of different models, the above structure is arranged. Specifically, the clamping seat 400 is installed on the support seat 100, the sliding groove 410 is distributed transversely on the clamping seat 400, and the material loading block 210 is transversely inserted into the sliding groove 410, so that the material loading block 210 can be quickly fixed on the clamping seat 400. In this way, only the material loading block 210 needs to be replaced, so that the material loading hole 211 of different models can be quickly replaced for testing the air tightness of the knobs 20 of different sizes.

[0042] In an embodiment, the downward pressing driving member 220 and the material pushing driving member 310 are both air cylinders. In this way, the knob 20 can be stably inserted into the material loading hole 211 or pulled out of the material loading hole 211.

[0043] As shown, Figure 1 As shown, in an embodiment, a handle 260 is further arranged on the material loading block 210. In this way, the handle 260 facilitates the quick insertion of the material loading block 210 into the clamping seat 400 or the removal of the material loading block 210 from the clamping seat 400.

[0044] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A knob air tightness test fixture, characterized in that, The utility model relates to a supporting seat, a sealing assembly and a pushing assembly, and belongs to the technical field of the sealing and pushing of the supporting seat. The sealing assembly comprises a supporting seat, a sealing assembly, a pressing driving element and a buckle, the supporting seat is detachably provided with a carrier block, a plurality of carrier holes are formed in the carrier block, a sealing ring is arranged in each carrier hole, the pressing driving element is arranged on the supporting seat, the buckle is arranged on the output shaft of the pressing driving element, the buckle is located above the carrier block, a gas injection hole is formed in the buckle, and the pressing driving element drives the buckle to descend so that the carrier block and the buckle jointly form a closed cavity. The pushing assembly comprises a pushing driving element and a pushing block, the pushing driving element is arranged on the supporting seat, and the pushing block is arranged on the output shaft of the pushing driving element and located below the carrier block. A gas filling groove is formed in the side surface of the buckle close to the carrier block, the gas filling groove is communicated with the gas injection hole, and the inner side wall of the gas filling groove and the carrier block jointly form the closed cavity when the buckle is buckled with the carrier block.

2. The knob air tightness test fixture of claim 1, wherein, A stepped groove is formed in the inner side wall of the gas filling groove, and the stepped groove is used for abutting against the top surface of the carrier block.

3. The knob air tightness test fixture of claim 2, wherein, A sealing ring is sleeved on the outer side wall of the carrier block, and the sealing ring is used for abutting against the inner side wall of the stepped groove.

4. The knob air tightness test fixture of claim 3, wherein, When the stepped groove and the knob abut against the top surface of the carrier block, a space is formed between the top surface of the knob and the inner bottom wall of the gas filling groove.

5. The knob air tightness test fixture of claim 3, wherein, An emptying groove is further formed in the inner bottom wall of the gas filling groove.

6. The knob air tightness test fixture of claim 2, wherein, A limiting groove is formed in the inner side wall of the carrier hole, and the sealing ring is located in the limiting groove.

7. The knob air tightness test fixture of claim 1, wherein, A clamping seat is arranged on the supporting seat, a sliding groove is transversely formed in the clamping seat, the carrier block is detachably and slidably arranged in the sliding groove, and the pushing driving element is located below the sliding groove.

8. The knob air tightness test fixture of claim 1, wherein, The pressing driving element and the pushing driving element are both air cylinders.

9. The knob air tightness test fixture of claim 1, wherein, A handle is further arranged on the carrier block.

10. The knob air tightness test fixture of claim 1, wherein, ​

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