Hardware airtightness detection device

Abstract

The utility model provides a hardware air tightness detection device which comprises a first die and a second die which are arranged in a matching manner, and a driving mechanism used for driving the dies to be closed and opened. A sealed space is formed inside after the first mold and the second mold are closed, a measuring piece of a frame structure is located in the sealed space, the sealed space is divided into a closed inner space and a closed outer space by the frame structure, an air inlet nozzle is arranged on the side wall of the outer space, and an air pressure sensor is arranged on the side wall of the inner space. After the first mold and the second mold are closed, the test piece with the frame body structure is divided into an inner space and an outer space, the air tightness of the test piece is tested by detecting the pressure change of the inner space after pressurization in the outer space, the detection operation is convenient, and the accuracy is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing, and particularly relates to a device for detecting the air tightness of hardware parts. Background Art

[0002] Hardware parts are widely used, and many products use hardware parts as the housing. Among these housing products, some need to have the ability to prevent water and dust, such as watch dials, connector housings, diving waterproof flashlight housings, etc. These products do not have a fully enclosed structure and need to be assembled with other components to achieve enclosure. For example, for a watch dial, the back cover and the glass cover need to be assembled to enclose the dial. However, if the air tightness is detected after enclosure, the assembled glass cover will also be treated as waste together with the dial, resulting in waste. And a watch dial is only a semi-finished product with a frame structure. It is difficult to solve the problem of how to separately detect the air tightness before assembling with other components. Content of the Utility Model

[0003] In view of the defects in the background art, the utility model provides a device for detecting the air tightness of hardware parts, which can separately detect the air tightness of semi-finished hardware parts with a frame structure.

[0004] The utility model provides a device for detecting the air tightness of hardware parts, including a first mold and a second mold which are arranged in a matching manner, and a driving mechanism for driving the molds to close and open.

[0005] After the first mold and the second mold are closed, a sealed space is formed inside. The test piece with a frame structure is located in the sealed space. The frame structure divides the sealed space into a closed inner space and an outer space. An air inlet nozzle is arranged on the side wall of the outer space, and a pressure sensor is arranged on the side wall of the inner space.

[0006] Preferably, the driving mechanism includes a motor and a telescopic rod driven by the motor. The telescopic rod is located at the bottom of the motor.

[0007] The device for detecting the air tightness of hardware parts further includes a base and a bracket. The bracket is fixedly arranged on the top of the base. The motor is fixedly installed on the bracket. The first mold is arranged at the bottom of the telescopic rod, and the second mold is fixedly arranged on the top surface of the base.

[0008] Preferably, a second rubber step is arranged in the middle of the second mold, and a first rubber step is arranged in the middle of the first mold. During the test, the test piece is clamped between the first rubber step and the second rubber step. The test piece, the first rubber step and the second rubber step enclose to form the inner space.

[0009] Preferably, a limiting block is arranged on the second rubber step, and the limiting block is located inside the frame structure of the test piece.

[0010] Preferably, the hardware air tightness testing device further comprises a plug, which is used to seal the openings on the side of the testing piece.

[0011] Preferably, the limiting block is provided with a groove for accommodating the plug and a blind hole for accommodating the air pressure sensor, and the blind hole is communicated with the groove.

[0012] Preferably, a press-type stroke sensor is provided on the top of the side wall of the second mold.

[0013] Preferably, a door-type anti-fool sensor is also provided on the base, and the door-type anti-fool sensor is located on the front side of the bracket.

[0014] The beneficial effects of the utility model include: after the first mold and the second mold are closed, the test piece with a frame structure is separated into two spaces, an inner space and an outer space. The air tightness of the test piece is tested by detecting the pressure change in the inner space after pressurizing the outer space. Not only is the detection operation convenient but also the accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0016] Figure 1 It is a stereoscopic diagram of the hardware air tightness detection device of the utility model in the mold opening state.

[0017] Figure 2 It is a stereoscopic diagram of the hardware air tightness detection device of the utility model in the mold closing state.

[0018] Figure 3 It is a cross-sectional view of the hardware air tightness detection device of the utility model in the mold closing state.

[0019] Figure 4 It is the internal structure diagram of the first mold of the utility model.

[0020] Figure 5 It is the internal structure diagram of the second mold after the test piece is placed in the utility model.

[0021] Reference numerals:

[0022] 100-test piece, 110-opening, 1-first mold, 11-inner space, 12-outer space, 13-first rubber step, 2-second mold, 21-air inlet nozzle, 22-second rubber step, 23-limit block, 24-groove, 25-blind hole, 3-air pressure sensor, 4-motor, 41-telescopic rod, 5-base, 51-bracket, 6-plug, 7-press-type travel sensor, 8-door-type anti-fool sensor. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] Therefore, a feature pointed out in this specification will be used to illustrate one of the features of one embodiment of the present utility model, rather than implying that each embodiment of the present utility model must have the described feature. In addition, it should be noted that this specification describes many features. Although some features may be combined to show possible system designs, these features may also be used in other combinations not specifically described. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0025] The principle of the present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0026] The present utility model provides a hardware component airtightness detection device. As shown in Figures 1-5, it includes a first mold 1 and a second mold 2 which are configured to cooperate with each other, and a driving mechanism for driving the molds to close and open. After the first mold 1 and the second mold 2 are closed, a sealed space is formed inside. The test piece 100 with a frame structure is located in the sealed space. The frame structure divides the sealed space into a closed inner space 11 and an outer space 12. An air inlet nozzle 21 is provided on the side wall of the outer space 12, and a pressure sensor 3 is provided on the side wall of the inner space 11.

[0027] After the first mold 1 and the second mold 2 are closed, the test piece 100 with a frame structure is partitioned into two inner and outer spaces. By pressurizing the outer space 12 and then detecting the pressure change in the inner space 11, the airtightness of the test piece 100 is tested. This method is not only convenient for detection operation but also has high accuracy.

[0028] In this embodiment, the driving mechanism includes a motor 4 and a telescopic rod 41 driven by the motor 4. The telescopic rod 41 is located at the bottom of the motor 4. The hardware component airtightness detection device further includes a base 5 and a bracket 51. The bracket 51 is fixedly provided on the top of the base 5. The motor 4 is fixedly installed on the bracket 51. The first mold 1 is provided at the bottom of the telescopic rod 41, and the second mold 2 is fixedly provided on the top surface of the base 5. During the test, the test piece 100 is placed in the second mold 2. The motor 4 drives the telescopic rod 41 to press down to close the first mold 1 and the second mold 2. Then, the outer space 12 is pressurized through the air inlet nozzle 21. According to the pressure change detected by the pressure sensor 3 in the inner space 11, the airtightness of the hardware component test piece 100 is judged based on the pressure change situation.

[0029] In this embodiment, a second rubbery step 22 is provided in the middle of the second mold 2, and a first rubbery step 13 is provided in the middle of the first mold 1. During testing, the test piece 100 is clamped between the first rubbery step 13 and the second rubbery step 22, and the test piece 100, the first rubbery step 13, and the second rubbery step 22 enclose an inner space 11. The first rubbery step 13 and the second rubbery step 22 are elastic and can completely seal the upper and lower surfaces of the frame structure to enclose the inner space 11.

[0030] This embodiment is applicable to detecting the airtightness of a watch dial, and the front glass cover and the bottom back cover of the watch dial are not installed. A limiting block 23 is provided on the second rubbery step 22. The limiting block 23 is generally circular, and there are protrusions on the circumferential side that abut against the inner side of the watch dial.

[0031] An opening 110 for installing a knob for adjusting time is provided on one side of the watch dial. In order to prevent air leakage from the opening 110 during testing, the hardware airtightness detection device is designed with a plug 6 for blocking the opening 110. The plug 6 is in the shape of a thin rod with a gradually thickening diameter and is inserted into the opening 110 from the outside of the opening 110. The limiting block 23 is provided with a groove 24 for accommodating the plug 6 and a blind hole 25 for accommodating the air pressure sensor 3, and the blind hole 25 is communicated with the groove 24. The limiting block 23 compresses the free space in the inner space 11, and the main free space is located in the groove 24 and the blind hole 25, making the detection of the air pressure sensor 3 more sensitive.

[0032] In this embodiment, a push-type travel sensor 7 is provided at the top of the side wall of the second mold 2. When the first mold 1 presses down to close the mold, the push-type travel sensor 7 will be triggered, and the push-type travel sensor 7 will trigger the compressor to inject compressed gas into the outer space 12 through the air inlet nozzle 21.

[0033] In this embodiment, a door-type anti-fooling sensor 8 is further provided on the base 5. The door-type anti-fooling sensor 8 is located in front of the bracket 51. When a person's hand passes through the door-type anti-fooling sensor 8, the protection mechanism of the hardware airtightness detection device will be triggered. At this time, the motor 4 is in a standby state, and even if the start switch is accidentally pressed, the motor 4 will not be started to close the mold.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hardware airtightness detection device, characterized in that, It includes a first mold and a second mold which are configured in a matching manner, and a driving mechanism for driving the molds to close and open. After the first mold and the second mold are closed, a sealed space is formed inside. A measuring piece in a frame structure is located in the sealed space. The frame structure divides the sealed space into a closed inner space and an outer space. An air inlet nozzle is provided on the side wall of the outer space, and a pressure sensor is provided on the side wall of the inner space.

2. The hardware airtightness detection device according to claim 1, characterized in that, The driving mechanism includes a motor and a telescopic rod driven by the motor. The telescopic rod is located at the bottom of the motor. The hardware airtightness detection device further includes a base and a bracket. The bracket is fixedly provided on the top of the base. The motor is fixedly installed on the bracket. The first mold is arranged at the bottom of the telescopic rod, and the second mold is fixedly provided on the top surface of the base.

3. The hardware airtightness detection device according to claim 2, characterized in that, A second rubber step is provided in the middle of the second mold, and a first rubber step is provided in the middle of the first mold. During testing, the measuring piece is clamped between the first rubber step and the second rubber step. The measuring piece, the first rubber step and the second rubber step enclose to form the inner space.

4. The hardware airtightness detection device according to claim 3, characterized in that, A limiting block is provided on the second rubber step. The limiting block is located inside the frame structure of the measuring piece.

5. The airtightness detection device for hardware parts according to claim 4, characterized in that, The hardware airtightness detection device further includes a plugging piece for plugging the openings on the side perimeter of the measuring piece.

6. The hardware airtightness detection device according to claim 5, characterized in that, The limiting block is provided with a groove for accommodating the plugging piece and a blind hole for accommodating the pressure sensor, and the blind hole is communicated with the groove.

7. The airtightness detection device for hardware as described in claim 6, characterized in that, A push-button travel sensor is provided on the top of the side wall of the second mold.

8. The hardware airtightness detection device according to claim 7, characterized in that, A door-type anti-fooling sensor is further provided on the base. The door-type anti-fooling sensor is located in front of the bracket.

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