Circuit board ultraviolet weather-proof test box

Abstract

The utility model relates to the technical field of ultraviolet weather-proof testing, in particular to a circuit board ultraviolet weather-proof testing box which comprises a box body, a testing cavity is arranged in the box body, an ultraviolet lamp is arranged at the top end of the testing cavity, a tray used for bearing a circuit board is further arranged in the testing cavity, a rotating shaft is arranged at the bottom end of the tray, and the rotating shaft is used for driving the tray to rotate. T-shaped sliding grooves are evenly distributed in the upper side face of the tray in the radial direction of the tray, movable T-shaped sliding blocks are oppositely arranged in the T-shaped sliding grooves, clamping assemblies used for clamping a circuit board are arranged on the T-shaped sliding blocks, each clamping assembly comprises a clamping cylinder, a clamping cavity is formed in each clamping cylinder, a clamping plate capable of moving up and down is arranged in each clamping cavity, and the clamping plates are arranged in the clamping cylinders. And a clamping rod with one end extending out of the clamping cavity is arranged on the clamping plate. According to the ultraviolet weather-proof test box for the circuit board, through the arrangement of the rotating shaft, the tray can rotate so as to drive the circuit board to rotate, so that all parts of the circuit board are uniformly irradiated, and the test result is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of ultraviolet weathering test, in particular to an ultraviolet weathering test box for a circuit board. Background Art

[0002] The UV weathering test simulates the UV spectrum in sunlight. Through the action of ultraviolet light, the single light resistance of the material is weakened or invalidated. It is used to test the weather resistance of the material. The existing testing equipment generally places the object to be tested at a fixed position of the UV lamp, resulting in uneven irradiation intensity at different positions of the object to be tested, resulting in poor test results.

[0003] For example, the patent number CN205483959U discloses an ultraviolet light accelerated weathering tester, which includes a box, a tray, an illumination component, and a temperature control component. The illumination component is fixedly arranged on the top of the inner side of the box and above the tray. The box is also provided with a display component and a control component. The illumination component, the temperature control component, and the display component are all electrically connected to and driven by the control component. Although the weathering tester can fully simulate the outdoor ultraviolet light environment, control the test time, and effectively realize the temperature control of the simulated environment, it places the object to be tested at a fixed position of the ultraviolet lamp. The distance between the ultraviolet lamp and different positions of the object to be tested is different, resulting in uneven illumination intensity at different positions of the object to be tested, which affects the test effect, so it needs to be improved. Utility Model Content

[0004] The utility model aims to provide a circuit board ultraviolet weathering test box to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A circuit board ultraviolet weathering test box comprises a box body, a test cavity is arranged in the box body, an ultraviolet lamp is arranged at the top of the test cavity, a tray for supporting the circuit board is also arranged in the test cavity, a rotating shaft is arranged at the bottom end of the tray, the rotating shaft is used to drive the tray to rotate, T-shaped slide grooves are evenly arranged on the upper side of the tray along the radial direction of the tray, movable T-shaped slide blocks are relatively arranged in the T-shaped slide grooves, a clamping assembly for clamping the circuit board is arranged on the T-shaped slide block, the clamping assembly comprises a clamping cylinder, a clamping cavity is arranged in the clamping cylinder, a clamping plate which can move up and down is arranged in the clamping cavity, and a clamping rod with one end extending out of the clamping cavity is provided on the clamping plate.

[0007] Furthermore, a rotatable threaded rod is provided in the T-shaped slide groove along its extension direction, and a through hole is provided in the T-shaped slider for the corresponding threaded rod to thread through. The rotation of the threaded rod is used to drive the T-shaped slider to slide along the T-shaped slide groove.

[0008] Furthermore, a first movable groove is provided on the side wall of the clamping cylinder along its height direction, and the first movable groove allows the corresponding clamping rod to extend. A tension spring is also provided in the clamping cavity. The lower end of the tension spring is fixedly connected to the bottom wall of the clamping cavity, and the upper end of the tension spring is fixedly connected to the bottom end surface of the clamping plate. The tension spring is used to drive the clamping plate to move downward.

[0009] Furthermore, a blocking ring for sealing the clamping cavity is provided at the top end thereof, a second movable groove is provided on the side wall of the clamping cylinder along its height direction, a locking groove is provided at the upper end of the second movable groove along the circumference of the clamping cylinder, and a rotatable lifting rod is provided on the upper plate surface of the clamping plate through a bearing, the upper end of the lifting rod passes through the blocking ring and extends out, a locking rod is provided on the lifting rod and moves in the second movable groove, and the rotation of the lifting rod is used to drive the locking rod to slide into the locking groove to realize that the lifting rod is in an upward state.

[0010] Furthermore, a heat dissipation fan is disposed opposite to the rear side wall of the test chamber.

[0011] Furthermore, an openable and closable door is provided on the front side wall of the test chamber.

[0012] Furthermore, a hand-cranked wheel is provided at the protruding end of the threaded rod.

[0013] Furthermore, a protective shell is provided at the bottom end of the test cavity, a protective cavity is provided in the protective shell, a motor is provided in the protective cavity, and the lower end of the rotating shaft extends into the protective cavity and is fixedly connected to the output end of the motor.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The circuit board UV weathering test box, through the setting of the tray and the rotating shaft, enables the tray to rotate, thereby driving the circuit board to rotate, so that all parts of the circuit board are evenly irradiated, which will not affect the test results.

[0016] 2. The circuit board UV weathering test box, through the arrangement of the clamping tube, the clamping cavity, the clamping plate and the clamping rod, enables the clamping plate to rise and fall in the clamping tube, driving the clamping rod to rise and fall, thereby better squeezing and fixing the circuit board on the tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a circuit board UV weathering test box.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the test chamber in the utility model.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 It is a structural schematic diagram of the locking assembly in the utility model.

[0021] Figure 5 It is a schematic diagram of the explosion structure of the locking assembly in the utility model.

[0022] The meaning of the symbols in the figure is:

[0023] 100, box body; 101, test chamber; 102, box door; 103, observation window; 110, ultraviolet lamp; 120, cooling fan; 130, protective shell; 131, rotating shaft; 132, tray; 133, clamping assembly;

[0024] 200, protection chamber; 201, motor;

[0025] 300, T-shaped slide; 310, T-shaped slide block; 311, threaded rod; 312, hand-cranked wheel;

[0026] 400, clamping cylinder; 401, first movable groove; 402, second movable groove; 404, clamping cavity; 410, clamping plate; 411, clamping rod; 420, lifting rod; 421, locking rod; 422, locking groove; 430, blocking ring; 440, tension spring. DETAILED DESCRIPTION

[0027] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0028] The following is combined with Figure 1-Figure 5 This embodiment is described in further detail.

[0029] See also Figure 1-Figure 4 In the present embodiment, a circuit board ultraviolet weathering test box includes a box body 100, a test cavity 101 is provided in the box body 100, an ultraviolet lamp 110 is provided at the top of the test cavity 101, and a tray 132 for supporting the circuit board is also provided in the test cavity 101. A rotating shaft 131 is provided at the bottom of the tray 132, and the rotating shaft 131 is used to drive the tray 132 to rotate. T-shaped slide grooves 300 are evenly arranged on the upper side of the tray 132 along the radial direction of the tray 132, and movable T-shaped sliders 310 are relatively provided in the T-shaped slide grooves 300. A clamping assembly 133 for clamping the circuit board is provided on the T-shaped slider 310. The clamping assembly 133 includes a clamping cylinder 400, a clamping cavity 404 is provided in the clamping cylinder 400, and a clamping plate 410 that can move up and down is provided in the clamping cavity 404. A clamping rod 411 with one end extending out of the clamping cavity 404 is provided on the clamping plate 410.

[0030] In this embodiment, the ultraviolet lamp 110 in the test chamber 101 is used to emit ultraviolet light to simulate sunlight to test the light resistance of the circuit board. The ultraviolet lamp 110 is a prior art, so its principle is not described here. The circuit board to be tested is placed on the tray 132, and the clamping assembly 133 can better fix the circuit board on the tray 132, so that the tray 132 is driven to rotate under the action of the rotation shaft 131, and then the circuit board is driven to rotate, so that all parts of the circuit board can be evenly irradiated by the ultraviolet lamp 110, thereby ensuring the test effect.

[0031] The front side wall of the test chamber 101 is provided with an openable door 102. The door 102 is closed to block the test chamber 101, and is opened to connect the test chamber 101 with the outside, so as to facilitate the placement and taking of the circuit board in the test chamber 101. The door 102 is provided with a transparent observation window 103. The observation window 103 is provided to facilitate the operator to observe the circuit board outside the box 100. The rear side wall of the test chamber 101 is provided with a heat dissipation fan 120. The heat dissipation fan 120 is provided to discharge the heat generated by the ultraviolet lamp 110 in the test chamber 101 during operation, so as to prevent the temperature in the test chamber 101 from being too high and affecting its normal use.

[0032] Among them, by setting the T-shaped slide groove 300 and the T-shaped slider 310, the T-shaped slider 310 can slide in the T-shaped slide groove 300, that is, the distance between the clamping components 133 can be adjusted, so that circuit boards of different sizes can be placed on the tray 132 between the clamping components 133, thereby improving the applicability of the tray 132;

[0033] Among them, through the arrangement of the clamping cylinder 400, the clamping cavity 404, the clamping plate 410 and the clamping rod 411, the clamping plate 410 is lifted and lowered in the clamping cylinder 400, driving the clamping rod 411 to lift and lower, so that the circuit board on the tray 132 can be better squeezed and fixed.

[0034] like Figure 1 and Figure 2 As shown, in this embodiment, a protective shell 130 is provided at the bottom end of the test cavity 101, a protective cavity 200 is provided in the protective shell 130, a motor 201 is provided in the protective cavity 200, and the lower end of the rotating shaft 131 extends into the protective cavity 200 and is fixedly connected to the output end of the motor 201.

[0035] In this embodiment, the protection shell 130 is provided to protect the motor 201 in the protection cavity 200, so that the motor 201 will not be disturbed by the outside world when working.

[0036] Among them, the upper end of the rotating shaft 131 is fixedly connected to the center position of the lower plate surface of the tray 132, and the lower end of the rotating shaft 131 passes through the protective shell 130 and is fixedly connected to the output shaft of the motor 201. Among them, through the setting of the motor 201, when the motor 201 is working, it can drive the rotating shaft 131 to rotate, and then drive the tray 132 to rotate, so that the circuit board can be evenly irradiated.

[0037] like Figure 1 and Figure 3 As shown, in this embodiment, a rotatable threaded rod 311 is provided in the T-shaped slide groove 300 along its extension direction, and a through hole for the corresponding threaded rod 311 to thread through is provided in the T-shaped slider 310. The rotation of the threaded rod 311 is used to drive the T-shaped slider 310 to slide along the T-shaped slide groove 300.

[0038] In this embodiment, the openings of the T-shaped slide grooves 300 are all facing the outer peripheral side of the tray 132, and a block is set at the opening. One end of the threaded rod 311 passes through the block and extends out. In particular, due to the T-shaped slide groove 300 limiting the T-shaped slider 310 and the threaded cooperation between the threaded rod 311 and the T-shaped slider 310, the threaded rod 311 can be rotated to drive the T-shaped slider 310 to slide along the T-shaped slide groove 300, thereby realizing the movement of the clamping assembly 133.

[0039] The threaded rod 311 is rotatably installed in the T-shaped slide groove 300 via a bearing. In actual use, a hand-cranked wheel 312 is provided at the protruding end of the threaded rod 311. The hand-cranked wheel 312 facilitates the rotation of the threaded rod 311.

[0040] like Figure 4 As shown, in this embodiment, a first movable groove 401 is provided on the side wall of the clamping cylinder 400 along its height direction, and the first movable groove 401 can allow the corresponding clamping rod 411 to extend out, and a tension spring 440 is also provided in the clamping cavity 404, and the lower end of the tension spring 440 is fixedly connected to the bottom wall of the clamping cavity 404, and the upper end of the tension spring 440 is fixedly connected to the bottom end surface of the clamping plate 410, and the tension spring 440 is used to drive the clamping plate 410 to move downward.

[0041] In this embodiment, the size of the clamping cavity 404 is adapted to the size of the clamping plate 410. With this structure, the clamping plate 410 can move up and down in the clamping cavity 404. The first movable groove 401 is provided so that the clamping rod 411 can extend out of the clamping cylinder 400 and move up and down with the clamping plate 410, thereby fixing the circuit board.

[0042] During assembly of this embodiment, both ends of the tension spring 440 are connected to the bottom end surface of the clamping plate 410 and the bottom wall of the clamping cavity 404 by welding. This structure makes the connection strength between the three higher and not easy to fall off. The tension spring 440 is always used to pull the clamping plate 410 downward in the clamping cavity 404, driving the clamping rod 411 downward to press the circuit board.

[0043] In actual use of this embodiment, the bottom end surface of the clamping cylinder 400 is fixedly connected to the top end surface of the T-shaped slider 310 by welding. Through this structure, the connection between the clamping cylinder 400 and the T-shaped slider 310 is better achieved, so that the clamping cylinder 400 can move with the T-shaped slider 310.

[0044] like Figure 4 As shown, in this embodiment, a blocking ring 430 for sealing the clamping cavity 404 is provided at the top end thereof, a second movable groove 402 is provided on the side wall of the clamping cylinder 400 along its height direction, a locking groove 422 is provided at the upper end of the second movable groove 402 along the circumference of the clamping cylinder 400, and a rotatable lifting rod 420 is provided on the upper plate surface of the clamping plate 410 through a bearing, the upper end of the lifting rod 420 extends through the blocking ring 430, and a locking rod 421 is provided on the lifting rod 420 and moves in the second movable groove 402. The lifting rod 420 rotates to drive the locking rod 421 to slide into the locking groove 422 to realize that the lifting rod 420 is in an upward state.

[0045] The locking groove 422 is provided so that when the locking rod 421 extends from the second movable groove 402 into the corresponding locking groove 422, the lifting rod 420 can be maintained in the clamping cavity 404 in the lifted state, thereby driving the clamping rod 411 to move upward and downward.

[0046] Among them, two locking grooves 422 are symmetrically provided, and the locking rod 421 is arranged corresponding to the locking groove 422. Through this structure, the two sides of the lifting rod 420 are evenly stressed and will not be skewed during use, affecting normal use.

[0047] Working principle: When the circuit board needs to be tested for UV weathering, first open the box door 102, then pull up the lifting rod 420 and rotate it in turn, place the locking rod 421 into the locking groove 422, keep the clamping rod 411 in the lifted state, turn the hand wheel 312 in turn to make the clamping cylinders 400 move away from each other, then place the circuit board in the gap between the clamping cylinders 400, move up and rotate the lifting rod 420 in turn, so that the locking rod 421 moves up from the second moving groove 402 and turns into the locking groove 422, and the clamping rod 411 keeps the lifted state. State, reversely rotate the hand wheel 312 to make the clamping cylinders 400 approach each other, reversely rotate the lifting rod 420 to make the locking rod 421 move from the locking groove 422 into the second movable groove 402, and the clamping rod 411 moves down under the tension of the tension spring 440 to fix one side of the circuit board, and then repeat this operation to fix the remaining three sides of the circuit board. After the fixation is completed, close the box door 102, start the motor 201 to rotate the tray 132, turn on the ultraviolet lamp 110 to irradiate the circuit board, and perform an ultraviolet weathering test on the circuit board.

[0048] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A circuit board UV weathering test box, characterized by: The invention comprises a box (100), wherein a test chamber (101) is provided in the box (100), an ultraviolet lamp (110) is provided at the top of the test chamber (101), a tray (132) for supporting a circuit board is also provided in the test chamber (101), a rotating shaft (131) is provided at the bottom of the tray (132), the rotating shaft (131) is used to drive the tray (132) to rotate, and T-shaped sliding grooves (300) are evenly arranged on the upper side surface of the tray (132) along the radial direction of the tray (132), A movable T-shaped slider (310) is relatively arranged in the T-shaped slide groove (300), and a clamping assembly (133) for clamping the circuit board is arranged on the T-shaped slider (310), and the clamping assembly (133) comprises a clamping cylinder (400), a clamping cavity (404) is arranged in the clamping cylinder (400), a clamping plate (410) movable up and down is arranged in the clamping cavity (404), and a clamping rod (411) is arranged on the clamping plate (410), one end of which extends out of the clamping cavity (404).

2. A circuit board UV weathering test box according to claim 1, characterized in that: A rotatable threaded rod (311) is provided in the T-shaped slide groove (300) along its extension direction, and a through hole is provided in the T-shaped slider (310) for the corresponding threaded rod (311) to thread through. The threaded rod (311) rotates to drive the T-shaped slider (310) to slide along the T-shaped slide groove (300).

3. A circuit board UV weathering test box according to claim 2, characterized in that: A first movable groove (401) is provided on the side wall of the clamping cylinder (400) along its height direction, and the first movable groove (401) allows the corresponding clamping rod (411) to extend out. A tension spring (440) is also provided in the clamping cavity (404), and the lower end of the tension spring (440) is fixedly connected to the bottom wall of the clamping cavity (404), and the upper end of the tension spring (440) is fixedly connected to the bottom end surface of the clamping plate (410). The tension spring (440) is used to drive the clamping plate (410) to move downward.

4. A circuit board UV weathering test box according to claim 3, characterized in that: A blocking ring (430) for sealing the clamping cavity (404) is provided at the top end thereof, a second movable groove (402) is provided on the side wall of the clamping cylinder (400) along its height direction, a locking groove (422) is provided at the upper end of the second movable groove (402) along the circumference of the clamping cylinder (400), a rotatable lifting rod (420) is provided on the upper plate surface of the clamping plate (410) through a bearing, the upper end of the lifting rod (420) extends through the blocking ring (430), and a locking rod (421) is provided on the lifting rod (420) and is located in the second movable groove (402) and moves. The lifting rod (420) is rotated to drive the locking rod (421) to slide into the locking groove (422) to realize that the lifting rod (420) is in an upward state.

5. The circuit board UV weathering test box according to claim 1, characterized in that: A heat dissipation fan (120) is disposed opposite to the rear side wall of the test chamber (101).

6. The circuit board UV weathering test box according to claim 1, characterized in that: An openable and closable door (102) is provided on the front side wall of the test chamber (101).

7. The circuit board UV weathering test box according to claim 2, characterized in that: The protruding end of the threaded rod (311) is provided with a hand-cranked wheel (312).

8. The circuit board UV weathering test box according to claim 1, characterized in that: A protective shell (130) is provided at the bottom end of the test cavity (101), a protective cavity (200) is provided in the protective shell (130), a motor (201) is provided in the protective cavity (200), and the lower end of the rotating shaft (131) extends into the protective cavity (200) and is fixedly connected to the output end of the motor (201).

Images