High-efficiency test needle bed for component test

Abstract

The utility model relates to a high-efficiency test needle bed for component testing, which comprises a machine table, a needle bed bottom plate for placing components is arranged on the machine table, a liftable needle bed top plate is arranged above the needle bed bottom plate, the needle bed top plate is connected with a probe, two sides of the needle bed bottom plate are provided with conveying frames, and the conveying frames are connected with the needle bed bottom plate. Transmission wheels are symmetrically arranged on the conveying frame, the peripheries of the transmission wheels are sleeved with conveying belts, the conveying belts are used for conveying components, a conveying space opposite to a needle bed bottom plate is formed between the conveying belts on the two sides, a connecting base is arranged at the bottom of the conveying frame, and a lifting air cylinder is arranged below the connecting base. The lifting air cylinder is used for driving the connecting base to ascend and descend so that the components in the conveying space can be close to or away from the needle bed bottom plate. The automatic feeding and discharging device has the following advantages and effects that automatic feeding and discharging can be carried out on components, so that the overall testing efficiency of the components is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of needle beds, in particular to a high-efficiency testing needle bed for component testing. Background Art

[0002] The bed of needles is also called an ICT test fixture, which is an online detection and test fixture. It is a non-standard test auxiliary fixture that uses electrical properties to test online components to check manufacturing defects and component failures. It is mainly used to check the open, short circuit, welding, etc. of individual online components and various circuit networks. It has the characteristics of simple operation, fast and rapid, and accurate fault location. The ICT test fixture can perform analog device function and digital device logic function tests with high fault coverage.

[0003] For example, a Chinese patent document with publication number CN217954528U discloses a high-precision test needle bed, including a needle bed bottom frame, a vertical plate and a needle bed top frame, the top of the needle bed bottom frame is detachably mounted with a vertical plate, the side wall of the vertical plate is detachably mounted with a support block, the top of the support block is detachably mounted with an electric telescopic rod, the bottom of the electric telescopic rod is detachably mounted with an insulating plate, the bottom of the insulating plate is detachably mounted with a needle bed top frame, the top of the needle bed top frame is structured with thread grooves distributed at equal intervals, and the thread grooves are threadedly connected with test needles that pass through the needle bed top frame, the top of the needle bed bottom frame is detachably mounted with a placing table, and the side walls of the needle bed top frame are detachably mounted with a top frame wiring box.

[0004] It can be seen from the above disclosed content that by adopting a retractable detection ejector pin, it is possible to adapt to contacts at different heights, without having to replace detection pins of different lengths, thereby avoiding puncturing component circuit boards and improving component detection efficiency.

[0005] However, the inventors found in actual use that when components need to be tested, they need to be manually placed into the needle bed bottom frame and the tested components need to be taken out of the needle bed bottom frame, so the overall component testing efficiency can be further improved. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a high-efficiency test needle bed for component testing, which can automatically load and unload components to improve the overall testing efficiency of the components.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency test needle bed for component testing, comprising a machine platform, a needle bed bottom plate for placing components is provided on the machine platform, a liftable needle bed top plate is provided above the needle bed bottom plate, a probe is connected to the needle bed top plate, conveying racks are provided on both sides of the needle bed bottom plate, transmission wheels are symmetrically provided on the conveying racks, a conveying belt is sleeved on the outer periphery of the transmission wheel, the conveying belt is used to convey components, and a conveying space opposite to the needle bed bottom plate is formed between the conveying belts on both sides, a connecting seat is provided at the bottom of the conveying rack, a lifting cylinder is provided below the connecting seat, and the lifting cylinder is used to drive the connecting seat to rise and fall so that the components in the conveying space are close to or away from the needle bed bottom plate.

[0008] The utility model is further configured as follows: a spacing adjustment screw arranged in the horizontal direction is provided above the connecting seat, a threaded hole is provided on any conveying frame, the conveying frame is sleeved on the outer periphery of the spacing adjustment screw through the threaded hole, and a threaded fit between the two is formed, a slider is provided below the threaded hole, the slider is connected to the bottom of the conveying frame, a slide rail is provided below the slider, the slider is coupled to the slide rail and a sliding fit between the two is formed.

[0009] The utility model is further configured as follows: the top of the conveying frame is rotatably connected to a height adjusting screw in a vertical direction, the outer periphery of the height adjusting screw is sleeved with a limit plate which can form a threaded fit with the height adjusting screw, guide rods arranged in a vertical direction are provided on both sides of the height adjusting screw, the guide rods pass through the limit plate and can form a sliding fit between the two.

[0010] The utility model is further configured as follows: one end of the limit plate extends outward as an extension end, the extension end is located above the conveyor belt, a pulley is rotatably connected to the extension end, and the pulleys are multiple and spaced apart from each other.

[0011] The utility model is further configured as follows: a limiting cylinder is provided at the downstream of the conveying frame, and when the component moves to a position vertically opposite to the needle bed bottom plate, the output end of the limiting cylinder extends out to limit the component.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Since a conveyor belt is provided, the conveyor belt is driven by a motor to convey components to the needle bed bottom plate and to convey the tested components outward from the needle bed bottom plate, thereby realizing automatic conveying of components. When the components are conveyed to a position vertically opposite to the needle bed bottom plate, the conveyor belt can be driven downward by the provided lifting cylinder, so that the components on the conveyor belt can contact the needle bed bottom plate. In this way, the probe can be driven to contact the components by moving the needle bed top plate downward, thereby completing the test of the components. After the component test is completed, the conveyor belt is driven upward by the lifting cylinder, so that the components can be moved away from the needle bed bottom plate. At this time, the components can be sent out by the conveyor belt. Therefore, the technical problem of manual loading and unloading of components in the prior art is effectively solved, thereby improving the overall test efficiency of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the first embodiment;

[0015] Figure 2 It is a schematic diagram of the top view of the structure of the first embodiment;

[0016] Figure 3 It is a side view structural schematic diagram of embodiment 1;

[0017] Figure 4 It is a side view structural diagram of the second embodiment. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] like Figures 1 to 3As shown, the utility model discloses a high-efficiency test needle bed for component testing, including a machine platform 1, a needle bed bottom plate 2 for placing components is provided on the machine platform 1, a liftable needle bed top plate 3 is provided above the needle bed bottom plate 2, a probe 4 is connected to the needle bed top plate 3, conveying frames 5 are provided on both sides of the needle bed bottom plate 2, transmission wheels 6 are symmetrically provided on the conveying frames 5, and a conveying belt 7 is sleeved on the outer periphery of the transmission wheel 6. The conveying belt 7 is used to convey components, and a conveying space opposite to the needle bed bottom plate 2 is formed between the conveying belts 7 on both sides. Due to the position of the component circuit board Components will not be welded on the edge part, based on this, by arranging the conveyor belt 7 on both sides of the needle bed bottom plate 2, the conveyor belt 7 supports the edge part of the component circuit board, and forms a conveying space between the conveyor belts 7 on both sides, so that the components can be automatically conveyed without affecting the contact between the probe 4 and the components. In addition, a connecting seat 8 is provided at the bottom of the conveying frame 5, and a lifting cylinder 9 is provided below the connecting seat 8. The lifting cylinder 9 is used to drive the connecting seat 8 to rise and fall, so that the components in the conveying space are close to or away from the needle bed bottom plate 2;

[0021] The above-mentioned conveyor belt 7 is driven by a motor to convey components to the needle bed bottom plate 2 and to convey the detected components outward from the needle bed bottom plate 2, so as to realize automatic conveying of components. When the components are conveyed to a position vertically opposite to the needle bed bottom plate 2, the lifting cylinder 9 is set to drive the conveyor belt 7 to move downward, so that the components on the conveyor belt 7 can contact the needle bed bottom plate 2. In this way, the probe 4 can be driven to contact the components by moving the needle bed top plate 3 downward, thereby completing the test of the components. After the component test is completed, the conveyor belt 7 is driven to move upward by the lifting cylinder 9, so that the components can be moved away from the needle bed bottom plate 2. At this time, the components can be sent out by the conveyor belt 7, realizing automatic loading and unloading of components, reducing manual participation, and thereby improving the overall test efficiency of components. The needle bed bottom plate 2 and the needle bed top plate 3 are both conventional technologies, so they are not described here.

[0022] In this embodiment, a spacing adjustment screw 10 arranged in the horizontal direction is further provided above the connecting seat 8. The spacing adjustment screw 10 is rotatably connected to the conveying frames 5 on both sides. A threaded hole is provided on any conveying frame 5. The conveying frame 5 is sleeved on the outer periphery of the spacing adjustment screw 10 through the threaded hole, and a threaded fit between the two can be formed. A slider 11 is provided below the threaded hole. The slider 11 is connected to the bottom of the conveying frame 5. A slide rail 12 is provided below the slider 11. The slider 11 is coupled to the slide rail 12 and a sliding fit between the two can be formed. The spacing adjustment screw 10 is controlled by a corresponding motor. By driving the spacing adjustment screw 10 to rotate, the conveying frame 5, which is sleeved on the outer periphery of the spacing adjustment screw 10 through the threaded hole and forms a threaded fit, can move along the direction of the spacing adjustment screw 10 under the guiding action formed between the slider 11 and the slide rail 12, so that the spacing between the conveying frames 5 on both sides can be adjusted to realize the adjustment of the conveying space, and then components of different widths can be adapted, that is, the ends of components of different widths can abut against the conveying frame 5, thereby expanding the scope of application.

[0023] In this embodiment, a height adjustment screw 13 is further connected to the top of the conveying frame 5 in a vertical direction. A limit plate 14 that can be threadedly matched with the height adjustment screw 13 is sleeved on the outer periphery of the height adjustment screw 13. Guide rods 15 arranged in the vertical direction are provided on both sides of the height adjustment screw 13. The guide rods 15 pass through the limit plate 14 and can form a sliding fit between the two. The limit plate 14 that can be threadedly matched with the height adjustment screw 13 is sleeved on the outer periphery of the height adjustment screw 13. Therefore, by rotating the height adjustment screw 13, the limit plate 14 can be guided by the guide rod 15 and move along the direction of the height adjustment screw 13 to adjust the distance between the limit plate 14 and the conveyor belt 7, so as to adapt to components of different thicknesses. In the process of conveying the components, the limit plate 14 limits the vertical direction of the components, so as to prevent the components from tilting up during the movement toward the needle bed bottom plate 2 and deviating from the needle bed bottom plate 2, thereby ensuring the stability of the component testing.

[0024] In this embodiment, one end of the limiting plate 14 is extended outward as an extension end 141, and the extension end 141 is located above the conveyor belt 7. The extension end 141 is rotatably connected to a pulley 16. There are multiple pulleys 16 and they are arranged at intervals from each other. Through the set pulleys 16, during the process of conveying components by the conveyor belt 7, the friction generated by the contact between the two is rolling friction, so that the components can be limited in the vertical direction while the conveyor belt 7 is convenient for the components to be transported.

[0025] Embodiment 2

[0026] like Figure 4As shown, the difference of this embodiment is that a limit cylinder 17 is provided at the downstream of the conveying frame 5. When the component moves to a position vertically opposite to the needle bed bottom plate 2, the output end of the limit cylinder 17 extends to limit the component, thereby preventing the component from moving to a position opposite to the needle bed bottom plate 2. When the conveyor belt 7 needs to stop, the component continues to move forward for a distance due to inertia, resulting in a deviation between the component and the needle bed bottom plate 2. In this embodiment, a photoelectric sensor is provided on the needle bed top plate 3. When the component is conveyed to a position opposite to the needle bed bottom plate 2, the photoelectric sensor sends a control signal to the controller. After receiving the control signal, the controller controls the conveyor belt 7 to stop, and controls the output end of the limit cylinder 17 to extend to limit the components, and then controls the lifting cylinder 9 to drive the conveyor frame 5 to move downward, so that the components in the conveying space can contact with the needle bed bottom plate 2, and controls the limit cylinder 17 to reset. At this time, the needle bed top plate 3 can move downward, and the probe 4 contacts the components on the needle bed bottom plate 2 to complete the test of the components. After the component test is completed, the lifting cylinder 9 and the needle bed top plate 3 are reset. At this time, the conveyor belt 7 can be restarted to send out the tested components.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A high-efficiency test bed of nails for component testing, characterized in that: The invention comprises a machine platform, wherein a needle bed bottom plate for placing components is provided on the machine platform, a liftable needle bed top plate is provided above the needle bed bottom plate, a probe is connected to the needle bed top plate, conveying racks are provided on both sides of the needle bed bottom plate, transmission wheels are symmetrically provided on the conveying racks, a conveying belt is sleeved on the outer periphery of the transmission wheel, the conveying belt is used to convey components, and a conveying space opposite to the needle bed bottom plate is formed between the conveying belts on both sides, a connecting seat is provided at the bottom of the conveying rack, a lifting cylinder is provided below the connecting seat, and the lifting cylinder is used to drive the connecting seat to rise and fall so as to make the components in the conveying space approach or move away from the needle bed bottom plate.

2. The high-efficiency test bed of nails for component testing according to claim 1, characterized in that: A spacing adjustment screw arranged in the horizontal direction is provided above the connecting seat, and a threaded hole is provided on any conveying frame. The conveying frame is mounted on the outer periphery of the spacing adjustment screw through the threaded hole, and a threaded fit between the two is formed. A slider is provided below the threaded hole, and the slider is connected to the bottom of the conveying frame. A slide rail is provided below the slider, and the slider is coupled to the slide rail to form a sliding fit between the two.

3. The high-efficiency test bed of nails for component testing according to claim 1, characterized in that: The top of the conveying frame is rotatably connected to a height-adjusting screw in the vertical direction. The outer periphery of the height-adjusting screw is provided with a limit plate which can form a threaded fit with the height-adjusting screw. Guide rods arranged in the vertical direction are provided on both sides of the height-adjusting screw. The guide rods pass through the limit plate and can form a sliding fit between the two.

4. The high-efficiency test bed of nails for component testing according to claim 3, characterized in that: One end of the limit plate extends outward as an extension end, and the extension end is located above the conveyor belt. A pulley is rotatably connected to the extension end, and the pulleys are multiple and spaced apart from each other.

5. The high-efficiency test bed of nails for component testing according to claim 1, characterized in that: The conveying frame is provided with a limiting cylinder at the downstream. When the component moves to a position vertically opposite to the needle bed bottom plate, the output end of the limiting cylinder extends out to limit the component.

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