Automatic detection equipment for electronic circuit board

Abstract

The invention relates to the technical field of electronic circuit board detection equipment, in particular to automatic detection equipment for an electronic circuit board, which comprises a pushing mechanism mounted on a sliding seat and comprising a flying probe unit; the limiting mechanism is fixed on the sliding seat and is positioned below the pushing mechanism; and the contact replacement mechanism is fixed on the sliding seat. In the invention, the push block is fixed on the transmission belt of the Z-axis driving unit, so that the power generated by the Z-axis driving unit can be efficiently transmitted to other parts of the pushing mechanism, and a stable power source is provided for the up-down movement of the flying probe unit, thereby ensuring that the flying probe unit can stably and accurately move in the detection and flying probe replacement process; and by arranging the first arc-shaped frame and being matched with the insertion connection of the arc groove and the ring frame, the needle head can be firmly limited, the stability of the needle head in the working process is ensured, and the situation that the needle head is loosened and influences the detection result is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuit board detection equipment, and specifically relates to an automatic detection equipment for electronic circuit boards. Background Art

[0002] In the modern electronic manufacturing industry, as the core component of various electronic devices, the quality inspection of electronic circuit boards is of crucial importance. Flying probe testing has become one of the important means for electronic circuit board detection due to its advantages such as high precision and non-contact. Flying probe testing detects the connectivity of circuits, the performance of components, etc. by contacting the component pins on the circuit board with flying probes and transmitting electrical signals, and can effectively detect problems such as open circuits, short circuits, and component damage, providing a key basis for the quality control of electronic circuit boards.

[0003] In the actual application process of flying probe testing equipment, there are some problems in the flying probe replacement link. When performing the flying probe replacement operation, the operator needs to first turn off the power of the equipment, then open the protective door or related components, find the position of the flying probe, then carefully remove the old flying probe using tools, then accurately insert the new flying probe and ensure firm installation, and finally close the protective door and conduct a power-on test. This series of operations is rather cumbersome. Especially in the case of high-precision requirements, each step must be carefully operated, which makes the operation time-consuming. Moreover, during the installation process, to prevent the flying probe from being contaminated or damaged, it is necessary to avoid touching the tip of the probe, which further increases the operation difficulty and time cost. These problems not only reduce the efficiency of electronic circuit board detection, increase the production cost, but also have an adverse impact on the continuity and stability of the detection work. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic detection equipment for electronic circuit boards to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An automatic detection equipment for electronic circuit boards, comprising:

[0007] A circuit board detection mechanism, including a workbench, a clamping unit fixedly connected to the workbench surface, and an X-axis driving unit fixedly connected to the workbench;

[0008] Two Y-axis driving units, screwed onto the X-axis driving unit, the Y-axis driving unit includes a sliding seat, and a Z-axis driving unit is fixedly connected to the sliding seat;

[0009] It further includes:

[0010] A pushing mechanism, installed on the sliding seat, the pushing mechanism includes a flying probe unit;

[0011] The limiting mechanism is fixed to the sliding seat at a position below the pushing mechanism;

[0012] The contact replacement mechanism is fixed to the sliding seat.

[0013] Furthermore, the circuit board detection mechanism further includes:

[0014] The first square groove is opened on the sliding seat;

[0015] The second square groove is opened on the sliding seat, and a cavity is formed between the inside of the second square groove and the inside of the first square groove;

[0016] The first sliding groove is opened on the sliding seat;

[0017] The second sliding groove is opened on the sliding seat above the first sliding groove.

[0018] Preferably, the pushing mechanism further includes:

[0019] The pushing block is fixed to the conveyor belt of the Z-axis driving unit;

[0020] The first square plate is slidably inserted into the inside of the second sliding groove;

[0021] The second square plate is slidably inserted into the inside of the first sliding groove, and an elastic push rod is fixedly connected between the second square plate and the first square plate;

[0022] The fixing frame is fixed to the second square plate, and the fixing frame is slidably inserted into the outer wall of the sliding seat.

[0023] Preferably, the flying needle unit includes:

[0024] The circular tube is fixed inside the fixing frame, and a convex block is fixedly connected inside the circular tube;

[0025] The circular rod slides inside the circular tube, and a second spring is fixedly connected between the circular rod and the circular tube.

[0026] Preferably, the flying needle unit further includes:

[0027] There are two third sliding grooves, which are opened on the bottom of the fixing frame at equal angles. One end of the arc-shaped frame is slidably inserted into the third sliding groove, and a group of arc grooves are formed on the inner wall of the arc-shaped frame;

[0028] The first spring is fixed between the inside of the third sliding groove and the outer wall of the arc-shaped frame;

[0029] The needle head is attached between the two arc-shaped frames, and a group of ring frames are fixedly connected to the outer wall of the needle head. The ring frames are inserted and matched with the arc grooves on the inner wall of the arc-shaped frame.

[0030] Preferably, the limiting mechanism includes:

[0031] A limit tube, fixedly connected to the outer wall of the sliding seat, when the needle moves downward;

[0032] A small capacitive sensor, fixed at one end of the limit tube.

[0033] Preferably: The contact member replacement mechanism includes:

[0034] An electric push rod, fixedly connected to the sliding seat, and an arc-shaped frame two is fixedly connected to one end of the electric push rod.

[0035] Preferably: The contact member replacement mechanism includes:

[0036] A first square rod, slidably inserted into the second square groove, and a group of triangular blocks are fixedly connected to one end of the first square rod;

[0037] A second square rod, slidably inserted into the cavity, and a third spring is fixedly connected between the outer wall of the second square rod and the inner wall of the cavity. An inclined block is fixedly connected to one end of the second square rod, and the inclined block can drive the second square rod to slide when squeezed by the first square rod.

[0038] Preferably: The contact member replacement mechanism further includes:

[0039] A third square plate, fixed at one end of the second square rod;

[0040] A fourth square plate, fixedly connected to the sliding seat, and elastic clamping plate units are fixedly connected to one ends of the fourth square plate and the third square plate.

[0041] Preferably: The contact member replacement mechanism further includes:

[0042] Two U-shaped frames, respectively fixed at positions below the elastic clamping plate units on the third square plate and the fourth square plate.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] 1. By fixing the push block on the conveyor belt of the Z-axis drive unit, the power generated by the Z-axis drive unit can be efficiently transmitted to other components of the pushing mechanism, providing a stable power source for the up and down movement of the flying needle unit. This ensures that the flying needle unit can move smoothly and accurately during the detection and flying needle replacement processes, guaranteeing the continuity and stability of the equipment operation. By providing an arc-shaped frame one and cooperating with the arc groove to be inserted into the ring frame, the needle can be firmly limited, ensuring the stability of the needle during the working process and avoiding loosening of the needle, which may affect the detection results.

[0045] 2. The limiting tube is fixedly connected to the outer wall of the slide seat. When the needle moves downward for detection, the arc frame and the needle are limited. Through this limiting effect, the needle can be fixed again to ensure the stable position of the flying needle, which greatly improves the accuracy and reliability of the detection results. The small capacitive sensor is fixed at one end of the limiting tube, which can accurately detect the wear of the needle tip, timely discover the loss of the flying needle, facilitate timely replacement of the flying needle, and ensure that the detection work always maintains a high degree of accuracy and quality.

[0046] 3. The electric push rod is fixedly connected to the slide seat, and the arc frame 2 at one end of the electric push rod can push the new needle to move, and the electromagnet arranged inside the arc frame 2 can adsorb and fix the needle. This design can realize accurate transfer and stable adsorption, greatly improves the efficiency and accuracy of needle replacement, and reduces the position deviation of the needle during the replacement process. Before the arc frame 2 pushes the new needle to move, the square rod 2 can slide to the side of the square rod 1 under the rebound action of the spring 3, driving the elastic splint unit on the square plate 3 to move, and can quickly adjust the position of the elastic splint unit on the square plate 3 to prepare for receiving the old needle. When the arc frame 2 squeezes the triangular block, the elastic splint unit on the square plate 3 will return to the original position to avoid affecting the work of other components, effectively improving the working stability. The U-shaped frame is arranged on the square plate 3 and the square plate 4 below the elastic splint unit, and fits with the ring frame on the needle to receive the needle. Cooperating with the elastic splint unit, it is ensured that the needle will not slip off at will during storage and replacement, thereby improving the stability and reliability of the replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0048] Figure 2 This is a schematic diagram of the first form structure of the pushing mechanism in the present invention;

[0049] Figure 3 It is a schematic diagram of the second form structure of the pushing mechanism in the present invention;

[0050] Figure 4 It is a schematic diagram of the structure of the contact replacement mechanism in the present invention;

[0051] Figure 5 It is a schematic diagram of the slide structure in the present invention;

[0052] Figure 6 It is a schematic diagram of the bottom structure of the push block in the present invention;

[0053] Figure 7 It is a schematic diagram of the partial structure of the driving mechanism in the present invention;

[0054] Figure 8 It is a schematic diagram of the cross-sectional structure of the flying probe unit in the present invention;

[0055] Figure 9 is a schematic structural view of the first arc-shaped frame in the present invention;

[0056] Figure 10 is a partial structural schematic view of the contact replacement mechanism in the present invention.

[0057] In the figure: 100, circuit board detection mechanism; 110, workbench; 120, clamping unit; 130, X-axis driving unit; 140, Y-axis driving unit; 141, sliding seat; 142, first square groove; 143, second square groove; 144, first sliding groove; 145, second sliding groove; 146, cavity; 150, Z-axis driving unit; 200, pushing mechanism; 210, pushing block; 220, first square plate; 221, elastic push rod; 222, second square plate; 223, fixing frame; 230, flying probe unit; 231, first spring; 232, circular tube; 233, convex block; 234, second spring; 235, circular rod; 236, third sliding groove; 237, first arc-shaped frame; 238, needle tip; 239, ring frame; 300, limiting mechanism; 310, limiting tube; 311, small capacitive sensor; 400, contact replacement mechanism; 410, electric push rod; 411, second arc-shaped frame; 420, first square rod; 421, triangular block; 422, second square rod; 423, inclined block; 424, third spring; 425, third square plate; 430, elastic clamping plate unit; 440, U-shaped frame; 441, fourth square plate. Specific embodiments

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0059] Please refer to Figures 1 to 10, in the embodiment of the present invention, an automatic detection device for an electronic circuit board includes: a circuit board detection mechanism 100, which includes a workbench 110. A clamping unit 120 is fixedly connected to the surface of the workbench 110. An X-axis driving unit 130 and two Y-axis driving units 140 are fixedly connected to the workbench 110. The Y-axis driving units 140 are screwed onto the X-axis driving unit 130. The Y-axis driving unit 140 includes a sliding seat 141. A Z-axis driving unit 150 is fixedly connected to the sliding seat 141. It further includes: a pushing mechanism 200, which is installed on the sliding seat 141. The pushing mechanism 200 includes a flying needle unit 230, which is used to push the flying needle unit 230 to move up and down, and can drive the flying needle unit 230 to work and be replaced. A limiting mechanism 300 is fixed on the sliding seat 141 below the pushing mechanism 200, which is used to limit the local structure of the flying needle unit 230 during the circuit board detection. A contact part replacement mechanism 400 is fixed on the sliding seat 141, which can quickly replace the contact parts on the flying needle unit 230 with the circuit board. A square groove 142 is opened on the sliding seat 141. A square groove 143 is opened on the sliding seat 141. A cavity 146 is opened between the inside of the square groove 143 and the inside of the square groove 142. A sliding groove 144 is opened on the sliding seat 141. A sliding groove 145 is opened on the sliding seat 141 above the sliding groove 144.

[0060] The pushing mechanism 200 further includes: a push block 210, which is fixed on the conveyor belt of the Z-axis driving unit 150 and is used to transfer the power of the Z-axis driving unit 150 to other components of the pushing mechanism 200. A square plate 220 is slidably inserted into the inside of the sliding groove 145. A square plate 222 is slidably inserted into the inside of the sliding groove 144. An elastic push rod 221 is fixedly connected between the square plate 222 and the square plate 220, which can drive the flying needle unit 230 to move its position by rebounding. A fixing frame 223 is fixed on the square plate 222. The fixing frame 223 is slidably inserted into the outer wall of the sliding seat 141 and is used to fix the flying needle unit 230. The flying needle unit 230 includes: a round tube 232, which is fixed inside the fixing frame 223. A convex block 233 is fixedly connected inside the round tube 232. A round rod 235 slides inside the round tube 232. A spring two 234 is fixedly connected between the round rod 235 and the round tube 232, which can play a buffering role. Two sliding grooves 236 are provided and are equally angularly opened at the bottom of the fixing frame 223. One end of an arc-shaped frame 237 is slidably inserted into the inside of the sliding groove 236. A group of arc grooves are opened on the inner wall of the arc-shaped frame 237. A spring one 231 is fixed between the inside of the sliding groove 236 and the outer wall of the arc-shaped frame 237, which can drive the two arc-shaped frames 237 to gather towards the middle. A needle head 238 is attached between the two arc-shaped frames 237. A group of ring frames 239 are fixedly connected to the outer wall of the needle head 238. The ring frames 239 are inserted and matched with the arc grooves on the inner wall of the arc-shaped frame 237, which can limit the needle head 238 between the two arc-shaped frames 237 and facilitate the replacement operation of the needle head 238.

[0061] The limiting mechanism 300 includes: a limiting tube 310 fixedly connected to the outer wall of the sliding seat 141, which can limit the arc-shaped frame 1 237 and the needle 238 when the needle 238 moves downward; and a small capacitive sensor 311 fixed to one end of the limiting tube 310.

[0062] The contact member replacement mechanism 400 includes: an electric push rod 410 fixedly connected to the sliding seat 141, with an arc-shaped frame 2 411 fixedly connected to one end of the electric push rod 410, which can push a new needle 238 to move, and an electromagnet is arranged inside the arc-shaped frame 2 411 to adsorb and fix the needle 238; a first square rod 420 slidably inserted into the second square groove 143, with a group of triangular blocks 421 fixedly connected to one end of the first square rod 420; a second square rod 422 slidably inserted into the cavity 146, with a third spring 424 fixedly connected between the outer wall of the second square rod 422 and the inner wall of the cavity 146, and an inclined block 423 fixedly connected to one end of the second square rod 422. When the inclined block 423 is squeezed by the first square rod 420, it can drive the second square rod 422 to slide; a third square plate 425 fixed to one end of the second square rod 422; a fourth square plate 441 fixedly connected to the sliding seat 141, and elastic clamping units 430 are fixedly connected to one ends of the fourth square plate 441 and the third square plate 425 respectively, for clamping the new needle 238 and the old needle 238; two U-shaped frames 440 are respectively fixed at positions below the elastic clamping units 430 on the third square plate 425 and the fourth square plate 441, which can be attached to the ring frame 239 to receive the needle 238, and can effectively limit the needle 238 in cooperation with the elastic clamping units 430.

[0063] Specifically, during operation, when the Z-axis drive unit 150 operates, the belt drives the pushing block 210 fixed thereto to move downward. After the pushing block 210 moves downward and contacts the second square plate 222, it pushes the second square plate 222 to slide downward along the inside of the first chute 144, and the flying needle unit 230 also moves downward together with the second square plate 222, so that the needle head 238 can accurately touch the component pins on the circuit board, thereby carrying out the detection work. During the process that the first arc-shaped frame 237 moves downward along with the flying needle unit 230 and passes through the inside of the limiting tube 310, the limiting tube 310 plays a limiting role to restrain the first arc-shaped frame 237, preventing the needle head 238 clamped between the two first arc-shaped frames 237 from shaking, ensuring the stable position of the flying needle during the detection process, and guaranteeing the accuracy of the detection data. When the detection is completed, the Z-axis drive unit 150 drives the pushing block 210 to move upward to a specified position. At this time, the pushing block 210 separates from the second square plate 222, and the elastic push rod 221 rebounds, driving the flying needle unit 230 to move upward until the contact head of the needle head 238 stops near the small capacitive sensor 311. When the end of the needle head 238 approaches the small capacitive sensor 311, it will change the capacitance value of the small capacitive sensor 311. If the end of the needle head 238 is worn, the distance and dielectric constant between it and the small capacitive sensor 311 will change, and this change will directly cause the capacitance value of the small capacitive sensor 311 to change. By measuring the change in the capacitance value, it can be determined whether the end of the needle head 238 is worn. Once it is detected that the end of the needle head 238 is worn, the Z-axis drive unit 150 drives the pushing block 210 to move upward so that the pushing block 210 contacts the first square plate 220, and the pushing block 210 continues to drive the first square plate 220 to move upward to one end of the second chute 145. At the same time, the flying needle unit 230 also moves upward until the needle head 238 completely exits the inside of the limiting tube 310. At this time, the first arc-shaped frame 237 and the needle head 238 are both exposed. A new needle head 238 is pre-limited and placed between the elastic clamping plate unit 430 on the fourth square plate 441 and the U-shaped frame 440. The U-shaped frame 440 is in close contact with the lowest ring frame 239 of the needle head 238, effectively preventing the needle head 238 from slipping off the elastic clamping plate unit 430. The operator only needs to insert the new needle head 238 into the arc groove between the elastic clamping plate units 430, and the U-shaped frame 440 can catch the new flying needle. Subsequently, the electric push rod 410 is activated to drive the second arc-shaped frame 411 to move towards the new needle head 238. During this process, the second arc-shaped frame 411 separates from the triangular block 421, and the second square rod 422 slides towards the first square rod 420 under the rebounding action of the third spring 424. The inclined block 423 at one end of the second square rod 422 presses one end of the first square rod 420, causing the triangular block 421 to return to its initial position. The sliding of the second square rod 422 drives the elastic clamping plate unit 430 on the third square plate 425 to move until the elastic clamping plate unit 430 adheres to one side of a group of the first arc-shaped frames 237. When the second arc-shaped frame 411 moves to adhere to the outer wall of the new needle head 238,The electromagnet disposed within the needle 238 is activated to adsorb and fix the needle 238. Then, the electric push rod 410 drives the adsorbed new needle 238 to move, causing it to disengage from the elastic splint unit 430 and contact the inclined surface on one side of a set of arc-shaped frames one 237. The extrusion of the new needle 238 causes the set of arc-shaped frames one 237 to move in opposite directions, thereby extruding the old needle 238 inside into the arc groove between the elastic splint units 430 on the square plate three 425 for limiting. The new needle 238 then smoothly enters between the set of arc-shaped frames one 237. At this time, the ring frame 239 is inserted into the arc groove of the arc-shaped frame one 237. Coupled with the action of the first spring 231, the two arc-shaped frames one 237 gather towards the middle to firmly limit the new needle 238, completing the rapid installation. After that, the device can continue with the detection work. After the entire process is completed, the old needle 238 can be removed from the device.

[0064] Embodiment 1

[0065] As Figures 6 - 9 shown, in this embodiment, the pushing mechanism 200 further includes: a push block 210 fixed to the conveyor belt of the Z-axis driving unit 150 for transmitting the power of the Z-axis driving unit 150 to other components of the pushing mechanism 200; a square plate one 220 slidably inserted into the inner part of the second chute 145; a square plate two 222 slidably inserted into the inner part of the first chute 144; an elastic push rod 221 fixedly connected between the square plate two 222 and the square plate one 220, capable of driving the flying needle unit 230 to move its position through rebound; a fixing frame 223 fixed to the square plate two 222, and the fixing frame 223 is slidably inserted into the outer wall of the sliding seat 141 for fixing the flying needle unit 230. The flying needle unit 230 includes: a round tube 232 fixed inside the fixing frame 223, a convex block 233 fixedly connected inside the round tube 232; a round rod 235 sliding inside the round tube 232, and a second spring 234 fixedly connected between the round rod 235 and the round tube 232, capable of playing a buffering role; two third chutes 236 are provided, equally angularly opened at the bottom of the fixing frame 223, one end of a set of arc-shaped frames one 237 is slidably inserted into the inner part of the third chute 236, a set of arc grooves are opened on the inner wall of the arc-shaped frame one 237; a first spring 231 is fixed between the inner part of the third chute 236 and the outer wall of the arc-shaped frame one 237, capable of driving the two arc-shaped frames one 237 to gather towards the middle; the needle 238 is fitted between the two arc-shaped frames one 237, and a set of ring frames 239 are fixedly connected to the outer wall of the needle 238, and the ring frames 239 are inserted and matched with the arc grooves on the inner wall of the arc-shaped frame one 237, capable of limiting the needle 238 between the two arc-shaped frames one 237 and facilitating the replacement operation of the needle 238.

[0066] In this embodiment, by fixing the pushing block 210 on the conveyor belt of the Z-axis driving unit 150, the power generated by the Z-axis driving unit 150 can be efficiently transmitted to other components of the pushing mechanism 200, providing a stable power source for the up and down movement of the flying needle unit 230. This ensures that the flying needle unit 230 can move smoothly and accurately during the detection and flying needle replacement processes, guaranteeing the coherence and stability of the equipment operation. By providing the arc-shaped frame 237 and cooperating with the arc groove to insert into the ring frame 239, the needle 238 can be firmly limited, ensuring the stability of the needle 238 during the working process and preventing the needle 238 from loosening and affecting the detection result.

[0067] As Figure 7 shown, in this embodiment, the limiting mechanism 300 includes: a limiting tube 310 fixedly connected to the outer wall of the sliding seat 141, which can limit the arc-shaped frame 237 and the needle 238 when the needle 238 moves downward; and a small capacitive sensor 311 fixed to one end of the limiting tube 310.

[0068] During specific implementation, by fixedly connecting the limiting tube 310 to the outer wall of the sliding seat 141, the arc-shaped frame 237 and the needle 238 are limited during the process of the needle 238 moving downward for detection. Through this limiting effect, the needle 238 can be fixed again to ensure the stable position of the flying needle, greatly improving the accuracy and reliability of the detection result. The small capacitive sensor 311 is fixed to one end of the limiting tube 310, which can accurately detect the wear condition of the tip of the needle 238, timely discover the loss of the flying needle, facilitate the timely replacement of the flying needle, and ensure that the detection work always maintains a high precision and quality.

[0069] Embodiment Two

[0070] As Figure 4 and Figure 10As shown in the figure, in this embodiment, the contact replacement mechanism 400 includes: an electric push rod 410 fixedly connected to the sliding seat 141. One end of the electric push rod 410 is fixedly connected with an arc-shaped frame two 411, which can push the new needle 238 to move. And an electromagnet is arranged inside the arc-shaped frame two 411, which can adsorb and fix the needle 238. A square rod one 420 is slidably inserted into the inner part of the square groove two 143. One end of the square rod one 420 is fixedly connected with a group of triangular blocks 421. A square rod two 422 is slidably inserted into the inner part of the cavity 146. A spring three 424 is fixedly connected between the outer wall of the square rod two 422 and the inner wall of the cavity 146. One end of the square rod two 422 is fixedly connected with an inclined block 423. When the inclined block 423 is squeezed by the square rod one 420, the square rod two 422 can be driven to slide. A square plate three 425 is fixed at one end of the square rod two 422. A square plate four 441 is fixedly connected with the sliding seat 141. Elastic clamping plate units 430 are fixedly connected to one ends of the square plate four 441 and the square plate three 425 respectively, and are used for clamping the new needle 238 and the old needle 238. There are two U-shaped frames 440, which are respectively fixed at the positions below the elastic clamping plate units 430 on the square plate three 425 and the square plate four 441, and can be attached to the ring frame 239 to receive the needle 238, and can cooperate with the elastic clamping plate units 430 to effectively limit the position of the needle 238.

[0071] During specific implementation, since the electric push rod 410 is fixedly connected to the sliding seat 141, the arc-shaped frame two 411 at one end of the electric push rod 410 can push the new needle 238 to move, and the electromagnet arranged inside the arc-shaped frame two 411 can adsorb and fix the needle 238. This design can achieve precise transfer and stable adsorption, greatly improving the efficiency and accuracy of needle 238 replacement, and reducing the position deviation of the needle 238 during the replacement process. Before the arc-shaped frame two 411 pushes the new needle 238 to move, the square rod two 422 can slide towards the side of the square rod one 420 under the rebound action of the spring three 424, driving the elastic clamping plate unit 430 on the square plate three 425 to move, and can quickly adjust the position of the elastic clamping plate unit 430 on the square plate three 425 to prepare for receiving the old needle 238. When the arc-shaped frame two 411 squeezes the triangular block 421, the elastic clamping plate unit 430 on the square plate three 425 will return to the original position to avoid affecting the operation of other components and effectively improve the working stability. The U-shaped frames 440 are arranged at the positions below the elastic clamping plate units 430 on the square plate three 425 and the square plate four 441, and are attached to the ring frame 239 on the needle 238 for receiving the needle 238. Cooperating with the elastic clamping plate units 430, it ensures that the needle 238 will not slide randomly during storage and replacement, improving the stability and reliability of the replacement process.

[0072] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0073] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic detection device for electronic circuit boards, comprising: A circuit board detection mechanism (100), including a workbench (110), a clamping unit (120) fixedly connected to the surface of the workbench (110), and an X-axis driving unit (130) fixedly connected to the workbench (110); Two Y-axis driving units (140) are screwed onto the X-axis driving unit (130). The Y-axis driving unit (140) includes a sliding seat (141), and a Z-axis driving unit (150) is fixedly connected to the sliding seat (141); It is characterized in that it further includes: A pushing mechanism (200) installed on the sliding seat (141), and the pushing mechanism (200) includes a flying needle unit (230); A limiting mechanism (300) fixed on the sliding seat (141) at a position below the pushing mechanism (200); A contact part replacement mechanism (400) fixed on the sliding seat (141).

2. An automatic detection device for an electronic circuit board according to claim 1, characterized in that, The circuit board detection mechanism (100) further includes: A first square groove (142) opened on the sliding seat (141); A second square groove (143) opened on the sliding seat (141), and a cavity (146) is opened between the interiors of the second square groove (143) and the first square groove (142); A first sliding groove (144) opened on the sliding seat (141); A second sliding groove (145) opened on the sliding seat (141) above the first sliding groove (144).

3. An automatic detection device for an electronic circuit board according to claim 2, characterized in that, The pushing mechanism (200) further includes: A push block (210) fixed to the conveyor belt of the Z-axis driving unit (150); A first square plate (220) slidably inserted into the interior of the second sliding groove (145); A second square plate (222) slidably inserted into the interior of the first sliding groove (144), and an elastic push rod (221) is fixedly connected between the second square plate (222) and the first square plate (220); A fixing frame (223) fixed to the second square plate (222), and the fixing frame (223) is slidably inserted into the outer wall of the sliding seat (141).

4. An automatic detection device for an electronic circuit board according to claim 3, characterized in that, The flying needle unit (230) includes: A circular tube (232) fixed inside the fixing frame (223), and a convex block (233) is fixedly connected inside the circular tube (232); A circular rod (235) slides inside the circular tube (232), and a second spring (234) is fixedly connected between the circular rod (235) and the circular tube (232).

5. An automated inspection device for an electronic circuit board according to claim 4, characterized in that, The flying needle unit (230) further includes: Two third sliding grooves (236) are equally angularly opened at the bottom of the fixing frame (223), and one end of an arc-shaped frame one (237) is slidably inserted into the interior of the third sliding groove (236). A set of arc grooves are opened on the inner wall of the arc-shaped frame one (237); A first spring (231) fixed between the interior of the third sliding groove (236) and the outer wall of the arc-shaped frame one (237); A needle head (238) is attached between the two arc-shaped frames one (237). A set of ring frames (239) are fixedly connected to the outer wall of the needle head (238), and the ring frames (239) are inserted and matched with the arc grooves on the inner wall of the arc-shaped frame one (237).

6. An automated electronic circuit board inspection device according to claim 1, characterized in that, The limiting mechanism (300) includes: A limiting tube (310) fixedly connected to the outer wall of the sliding seat (141); A small capacitive sensor (311) is fixed to one end of a limit tube (310).

7. An automatic detection device for an electronic circuit board according to claim 2, characterized in that, The contact replacement mechanism (400) includes: An electric push rod (410) is fixedly connected to the sliding seat (141), and an arc-shaped frame two (411) is fixedly connected to one end of the electric push rod (410).

8. An automatic detection device for an electronic circuit board according to claim 7, characterized in that, The contact replacement mechanism (400) includes: A first square rod (420) is slidably inserted into the inner part of the second square groove (143), and a group of triangular blocks (421) are fixedly connected to one end of the first square rod (420); A second square rod (422) is slidably inserted into the inner part of the cavity (146), a third spring (424) is fixedly connected between the outer wall of the second square rod (422) and the inner wall of the cavity (146), and an inclined block (423) is fixedly connected to one end of the second square rod (422).

9. An automatic detection device for an electronic circuit board according to claim 8, characterized in that The contact replacement mechanism (400) further includes: A third square plate (425) is fixed to one end of the second square rod (422); A fourth square plate (441) is fixedly connected to the sliding seat (141), and elastic clamping plate units (430) are fixedly connected to one ends of the fourth square plate (441) and the third square plate (425).

10. An automatic detection device for an electronic circuit board according to claim 9, characterized in that, The contact replacement mechanism (400) further includes: Two U-shaped frames (440) are provided and are respectively fixed to the third square plate (425) and the fourth square plate (441) at positions below the elastic clamping plate units (430).

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