CN217424658U

CN217424658U - Air tightness test fixture

Info

Publication number: CN217424658U
Application number: CN202220697424.8U
Authority: CN
Inventors: 王旭辉
Original assignee: Wingtech Communication Co Ltd
Current assignee: Wingtech Communication Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-09-13
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses an air tightness test fixture, which comprises a driving belt, a fixture, a first fixing plate and a second fixing plate; the first fixing plate and the second fixing plate are connected in parallel at intervals through a plurality of supporting rods; a first pressure plate is arranged between the first fixing plate and the jig, and an air pipe which penetrates through the first pressure plate and is communicated with the jig is arranged on the first fixing plate; a second pressurizing plate is arranged between the jig and the second fixing plate; the first pressurizing plate and the second pressurizing plate are both provided with a plurality of connecting holes, and the plurality of connecting holes are sleeved on the supporting rod in a one-to-one correspondence manner; the first fixing plate is provided with a forward threaded rod, and the second fixing plate is provided with a reverse threaded rod; the forward threaded rod and the reverse threaded rod are coaxially arranged and fixedly connected through a sleeve; when the driving device drives the sleeve to rotate, the first pressurizing plate and the second pressurizing plate are enabled to simultaneously approach or separate from the jig. The utility model provides the degree of automation of gas tightness test has reduced the test cost.

Description

Air tightness test fixture

[ technical field ] A method for producing a semiconductor device

The utility model relates to a test fixture technical field especially relates to an air tightness test fixture.

[ background of the invention ]

The housing of a mobile terminal, such as a mobile phone, requires a hermetic seal test before assembly. The existing mobile phone shell airtightness detection mode mainly comprises the steps of charging proper amount of compressed air into the mobile phone shell, detecting whether air pressure inside the mobile phone shell changes or not, judging whether the airtightness of the mobile phone shell is within a reasonable range or not according to the air pressure change, and judging whether a product is a qualified product or an unqualified product.

At present, the inspection mode of cell-phone shell gas tightness needs the manual work to put into the check out test set tool with the cell-phone shell, and the manual work presses the switch, and the gas tightness of hand casing is detected again to equipment. This kind of test mode needs the manual work to take in and out the cell-phone shell from the check out test set tool, has roughly certain probability can cause the fish tail of cell-phone shell. Meanwhile, the detection method needs manual placement, has the risk of injury to human bodies, needs to add labor cost on the premise of removing the original equipment cost, and is large in consumed working hours and low in efficiency.

In view of the above, it is desirable to provide a hermeticity test fixture to overcome the above-mentioned drawbacks.

[ Utility model ] content

The utility model aims at providing an air tightness test fixture aims at improving the current higher problem of mobile terminal cost when the gas tightness is tested, and degree of automation when promoting the test reduces test cost.

In order to achieve the above object, the utility model provides an air tightness test fixture, which comprises a transmission belt, a fixture fixed on the transmission belt, and a first fixing plate and a second fixing plate which are respectively arranged at the upper side and the lower side of the transmission belt at intervals; the first fixing plate and the second fixing plate are connected in parallel at intervals through a plurality of supporting rods; a first pressurizing plate is arranged between the first fixing plate and the jig, and an air pipe which penetrates through the first pressurizing plate and is communicated with the jig is arranged on the first fixing plate; a second pressurizing plate is arranged between the jig and the second fixing plate; the first pressurizing plate and the second pressurizing plate are both provided with a plurality of connecting holes, and the plurality of connecting holes are sleeved on the supporting rod in a one-to-one correspondence manner; the first fixing plate is provided with a forward threaded rod penetrating through the first pressurizing plate, and the second fixing plate is provided with a reverse threaded rod penetrating through the second pressurizing plate; the forward threaded rod and the reverse threaded rod are coaxially arranged and fixedly connected through a sleeve; the outer wall of the sleeve is connected with a driving device; when the driving device drives the sleeve to rotate, the first pressurizing plate and the second pressurizing plate are enabled to simultaneously approach or separate from the jig.

In a preferred embodiment, the driving device includes a first motor and a first belt sleeved on a movable end of the first motor; one side of the first belt, which is far away from the first motor, is sleeved on the outer wall of the sleeve.

In a preferred embodiment, the number of the jigs is multiple, and the jigs are distributed on the transmission belt at equal intervals.

In a preferred embodiment, two sides of the transmission belt are respectively sleeved on two transmission wheels; one of the driving wheels is connected with the movable end of the second motor through a second belt, so that when the second motor operates, the driving belt is driven to rotate around the driving wheel.

In a preferred embodiment, the device further comprises a feeding device arranged near the transmission belt; the feeding device comprises a tray and a mechanical arm; the mechanical arm is used for sending the to-be-tested object placed in the tray into the jig at the preset position.

In a preferred embodiment, the end of the mechanical arm is provided with a suction cup; the sucking disc is used for sucking the object to be detected by generating negative pressure.

In a preferred embodiment, the first fixing plate is provided with a first fixing block; one end of the forward threaded rod, which is far away from the sleeve, is rotatably connected to the first fixed block; the second fixing plate is provided with a second fixing block; one end, far away from the sleeve, of the reverse threaded rod is rotatably connected to the second fixing block.

In a preferred embodiment, the first pressing plate is provided with a first threaded hole, and the first threaded hole is in threaded connection with the positive threaded rod; and a second threaded hole is formed in the second pressurizing plate and is in threaded connection with the reverse threaded rod.

In a preferred embodiment, the support rod is further provided with a sensing device; the sensing device is used for sensing the jig so as to control the operation of the transmission belt.

In a preferred embodiment, the sensing device comprises an infrared generating device and an infrared receiving device which are respectively matched with each other on the basis of at least two supporting rods on the left side and the right side along the running direction of the transmission belt; when the jig runs between the at least two supporting rods, the infrared rays emitted by the infrared ray generating device to the infrared ray receiving device are shielded by the jig, so that the driving belt stops running.

The utility model provides an airtightness test fixture, fix the tool on the drive belt, make the tool pass between first increased pressure board and the second increased pressure board under the drive effect of drive belt, when drive arrangement drive sleeve is rotatory, make forward threaded rod and reverse threaded rod rotatory along same direction simultaneously, and then make first increased pressure board and second increased pressure board be close to each other and come the pressfitting in the upper and lower both sides of tool, and then carry out the gas tightness test through the trachea, when the test is accomplished, the sleeve is rotatory along the opposite direction, thereby make first increased pressure board and second increased pressure board keep away from each other, the drive belt of being convenient for carries out the tool that the test was accomplished, thereby the degree of automation of gas tightness test has been promoted, the test cost is reduced, the potential safety hazard has been reduced simultaneously.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a front view of the air tightness testing fixture provided by the present invention;

figure 2 is a perspective view of the hermeticity test fixture of figure 1 from another angle;

fig. 3 is a partial perspective view of a test area in the airtightness test jig shown in fig. 1.

100. An air tightness test fixture; 10. a transmission belt; 11. a driving wheel; 12. a second belt; 13. a second motor; 20. a jig; 30. a first fixing plate; 31. a first pressing plate; 32. an air tube; 33. a positive threaded rod; 34. a first fixed block; 40. a second fixing plate; 41. a second pressing plate; 42. a reverse threaded rod; 43. a second fixed block; 50. a feeding device; 51. a tray; 52. a mechanical arm; 53. a suction cup; 60. a support bar; 70. a sleeve; 80. a drive device; 81. a first motor; 82. a first belt; 90. an induction device; 91. an infrared generating device; 92. an infrared receiving device.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

In an embodiment of the present invention, a tightness testing fixture 100 is provided for testing tightness of a casing of a mobile terminal (e.g., a mobile phone, a tablet computer, etc.).

As shown in fig. 3, the air tightness testing jig 100 includes a transmission belt 10, a jig 20 fixed on the transmission belt 10, and a first fixing plate 30 and a second fixing plate 40 respectively spaced at an upper side and a lower side of the transmission belt 10. In the present embodiment, the jig 20 is a rectangular parallelepiped housing with an upper side opened.

Specifically, two sides of the transmission belt 10 are respectively sleeved on two transmission wheels 11. The middle shafts of the two driving wheels 11 are fixed on other preset equipment and play a role in fixing the driving belt 10. The number of the jigs 20 is plural, and the jigs are distributed on the transmission belt 10 at equal intervals to form a plurality of test works, so that the test states of the jigs 20 can be switched through the transmission function of the transmission belt 10, for example, the jig 20 which is tested is conveyed to a preset position to be convenient for butting the next station, and for example, an article (such as a mobile phone shell) (not shown in the figure) which is placed with a test object is conveyed to a test area for testing and the like. Further, one of the driving wheels 11 is connected to the movable end of the second motor 13 through the second belt 12, so that when the second motor 13 is operated, the driving belt 10 is driven to rotate around the driving wheel 11, thereby realizing the automatic movement of the jig 20.

Further, in one embodiment, the hermeticity test fixture 100 further includes a feeding device 50 disposed adjacent to the belt 10. The feeding device 50 is used for taking the object to be tested from a predetermined position to a preset fixture 20. Specifically, the feeding device 50 includes a tray 51 and a robot arm 52. A plurality of items to be tested (e.g., mobile phone housings) may be stacked within the tray 51.

The mechanical arm 52 can freely move in a three-dimensional space within a preset range, and is used for sending the object to be tested placed in the tray 51 into the jig 20 at a preset position. It should be noted that, the structure and the implementation principle of the mechanical arm 52 can refer to the prior art, and the present invention is not limited herein. Wherein the end of the robot arm 52 is provided with a suction cup 53. Sucking disc 53 is used for absorbing the more smooth article of waiting to detect in surface such as cell-phone shell through producing the negative pressure to avoid appearing traditional artifical mode of taking and possibly causing the situation of cell-phone shell fish tail.

In the embodiment of the present invention, the first fixing plate 30 and the second fixing plate 40 are connected by a plurality of supporting rods 60 at a parallel interval, so as to form a skeleton structure that is a cuboid, so that one layer of belt body structure of the transmission belt 10 and the corresponding jig 20 can pass through between the first fixing plate 30 and the second fixing plate 40, and the other layer of belt body structure of the transmission belt 10 is located outside the region formed by the surrounding of the first fixing plate 30 and the second fixing plate 40.

A first pressure plate 31 is arranged between the first fixing plate 30 and the jig 20, and a second pressure plate 41 is arranged between the jig 20 and the second fixing plate 40, so that the first pressure plate 31 and the second pressure plate 41 can respectively press the upper side and the lower side of the jig 20, thereby forming a closed structure and facilitating subsequent air tightness test. Specifically, the first pressing plate 31 and the second pressing plate 41 are respectively provided with a plurality of connecting holes (not shown in the figure), and the plurality of connecting holes are sleeved on the supporting rod 60 in a one-to-one correspondence manner, so that the first pressing plate 31 and the second pressing plate 41 can move up and down along the supporting rod 60, and the first pressing plate 31 and the second pressing plate 41 are prevented from moving laterally.

Wherein, the first fixing plate 30 is provided with an air pipe 32 which penetrates through the first pressurizing plate 31 and is communicated with the jig 20. After first increased pressure board 31 and second increased pressure board 41 pressfitting tool 20's upper and lower both sides respectively promptly, trachea 32 is the only interface of tool 20 and external intercommunication, and the inside compressed air that fills into proper amount toward the article that awaits measuring such as cell-phone shell this moment, later detect the inside atmospheric pressure of cell-phone shell and whether change, judge whether the gas tightness of cell-phone shell is within reasonable scope according to atmospheric pressure change to judge that the product is certified products or defective products. It should be noted that, the prior art can be referred to for the detection structure and the implementation principle of whether the air pressure changes, and the present invention is not limited herein.

Further, the first fixing plate 30 is provided with a forward screw rod 33 penetrating the first pressurizing plate 31. Specifically, the first pressure plate 31 is provided with a first threaded hole (not shown), and the first threaded hole is in threaded connection with the forward threaded rod 33, so that when the forward threaded rod 33 is matched with the first threaded hole to rotate, the transverse movement of the first pressure plate 31 is limited, and the first pressure plate 31 can only move longitudinally along the forward threaded rod 33. Wherein, the first fixing plate 30 is provided with a first fixing block 34. The end of the forward threaded rod 33 away from the sleeve 70 is rotatably connected to the first fixing block 34, so that the end of the forward threaded rod 33 is fixed to the first fixing block 34 without affecting the rotation of the forward threaded rod 33.

Similarly, the second fixing plate 40 is provided with a reverse screw rod 42 penetrating the second pressurizing plate 41. Specifically, the second pressing plate 41 is provided with a second threaded hole (not shown) which is screwed with the reverse threaded rod 42, so that when the reverse threaded rod 42 is rotated in cooperation with the second threaded hole, the second pressing plate 41 can only move longitudinally along the reverse threaded rod 42 because the transverse movement of the second pressing plate 41 is limited. Wherein, the second fixing plate 40 is provided with a second fixing block 43. The end of the reverse screw rod 42 remote from the sleeve 70 is rotatably coupled to the second fixing block 43 so that the end of the reverse screw rod 42 is fixed to the second fixing block 43 without affecting the rotation of the reverse screw rod 42.

In the above structure, the forward threaded rod 33 is coaxially disposed with the reverse threaded rod 42 and fixedly connected by the sleeve 70, that is, when the sleeve 70 is rotated, the forward threaded rod 33 and the reverse threaded rod 42 are rotated in the same direction. The forward threaded rod 33 and the reverse threaded rod 42 have opposite thread rotation directions, for example, the forward threaded rod 33 has right-handed threads and the reverse threaded rod 42 has left-handed threads. When the forward threaded rod 33 and the reverse threaded rod 42 are rotated in the same direction, the first pressing plate 31 and the second pressing plate 41 are rotated in opposite directions.

Specifically, the outer wall of the sleeve 70 is connected to a drive device 80. When the driving device 80 drives the sleeve 70 to rotate, the first pressing plate 31 and the second pressing plate 41 are simultaneously moved toward or away from the jig 20, so as to clamp or unclamp the sealing jig 20. Specifically, the driving device 80 includes a first motor 81 and a first belt 82 sleeved on a movable end of the first motor 81. The first belt 82 is sleeved on the outer wall of the sleeve 70 at a side far away from the first motor 81.

Further, in one embodiment, the support rod 60 is further provided with a sensing device 90. Sensing device 90 is used to sense tool 20 and thereby control the operation of belt 10. Specifically, the sensing device 90 includes an infrared generating device 91 and an infrared receiving device 92 respectively disposed on the left and right sides of the driving belt 10 along the running direction thereof, and adapted to each other. When the jig 20 is moved between at least two supporting rods 60, the infrared ray emitted from the infrared ray generating device 91 to the infrared ray receiving device 92 is blocked by the jig 20, so that the driving belt 10 stops moving, and the automation degree of the whole testing device is further improved.

To sum up, the utility model provides an airtightness test fixture 100, fix tool 20 on drive belt 10, make tool 20 pass between first increased pressure board 31 and second increased pressure board 41 under drive belt 10's drive effect, when drive arrangement 80 drive sleeve 70 is rotatory, make forward threaded rod 33 and reverse threaded rod 42 rotatory along same direction simultaneously, and then make first increased pressure board 31 and second increased pressure board 41 can be close to the upper and lower both sides at tool 20 of pressfitting recently each other, and then carry out the airtightness test through trachea 32, when the test is accomplished, sleeve 70 is rotatory along the reverse direction, thereby make first increased pressure board 31 and second increased pressure board 41 keep away from each other, be convenient for drive belt 10 carries out the tool 20 that the test was accomplished, thereby the degree of automation of airtightness test has been promoted, the test cost is reduced, the potential safety hazard has been reduced simultaneously.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. The air tightness test fixture is characterized by comprising a transmission belt, a jig fixed on the transmission belt, and a first fixing plate and a second fixing plate which are respectively arranged on the upper side and the lower side of the transmission belt at intervals; the first fixing plate and the second fixing plate are connected in parallel at intervals through a plurality of supporting rods; a first pressurizing plate is arranged between the first fixing plate and the jig, and an air pipe which penetrates through the first pressurizing plate and is communicated with the jig is arranged on the first fixing plate; a second pressurizing plate is arranged between the jig and the second fixing plate; the first pressurizing plate and the second pressurizing plate are both provided with a plurality of connecting holes, and the plurality of connecting holes are sleeved on the supporting rod in a one-to-one correspondence manner; the first fixing plate is provided with a forward threaded rod penetrating through the first pressurizing plate, and the second fixing plate is provided with a reverse threaded rod penetrating through the second pressurizing plate; the forward threaded rod and the reverse threaded rod are coaxially arranged and fixedly connected through a sleeve; the outer wall of the sleeve is connected with a driving device; when the driving device drives the sleeve to rotate, the first pressurizing plate and the second pressurizing plate are enabled to simultaneously approach or separate from the jig.

2. The airtightness test fixture according to claim 1, wherein the driving means includes a first motor and a first belt fitted over a movable end of the first motor; one side of the first belt, which is far away from the first motor, is sleeved on the outer wall of the sleeve.

3. The airtightness test fixture according to claim 1, wherein the number of the jigs is plural, and the jigs are distributed on the transmission belt at equal intervals.

4. The airtightness test fixture according to claim 1, wherein both sides of the transmission belt are respectively fitted over two transmission wheels; one of the driving wheels is connected with the movable end of the second motor through a second belt, so that when the second motor operates, the driving belt is driven to rotate around the driving wheel.

5. The airtightness test fixture according to claim 1, further comprising a feeding device provided in the vicinity of the transmission belt; the feeding device comprises a tray and a mechanical arm; the mechanical arm is used for sending the to-be-tested object placed in the tray into the jig at the preset position.

6. The airtightness test fixture according to claim 5, wherein the robot arm is provided at its distal end with a suction cup; the sucking disc is used for sucking the object to be detected by generating negative pressure.

7. The airtightness test fixture according to claim 1, wherein the first fixing plate is provided with a first fixing block; one end of the forward threaded rod, which is far away from the sleeve, is rotatably connected to the first fixed block; the second fixing plate is provided with a second fixing block; one end of the reverse threaded rod, which is far away from the sleeve, is rotatably connected to the second fixed block.

8. The airtightness test fixture of claim 1, wherein the first pressure plate has a first threaded hole formed therein, and the first threaded hole is threadedly engaged with the forward threaded rod; and a second threaded hole is formed in the second pressurizing plate and is in threaded connection with the reverse threaded rod.

9. The airtightness test fixture according to claim 1, wherein the support rod is further provided with an induction device; the sensing device is used for sensing the jig so as to control the operation of the transmission belt.

10. The airtightness test jig of claim 9, wherein the sensing means includes an infrared ray generating means and an infrared ray receiving means which are respectively provided with a fitting on the basis of at least two support rods on the left and right sides in the running direction of the belt; when the jig runs between the at least two supporting rods, the infrared rays emitted by the infrared ray generating device to the infrared ray receiving device are shielded by the jig, so that the driving belt stops running.