Electric appliance detector

Abstract

The utility model relates to the technical field of electric appliance detection, and discloses an electric appliance detector, which comprises a rack, a joint, an adjusting device and a joint driving device, the rack is provided with a positioning groove used for positioning a to-be-tested product. The connector comprises two test needles used for being matched with connecting holes of a product to be tested in an inserted mode, and the adjusting device is in transmission connection with one or two test needles of the connector and used for driving the two test needles of the connector to move face to face or back to back so that the distance between the two test needles can be the same as the distance between the two connecting holes of the product to be tested; and the joint driving device is arranged on the rack and is in transmission connection with the adjusting device, and the joint driving device is used for driving the adjusting device to move relative to the positioning groove, so that the test needles of the joint are in one-to-one correspondence with the connecting holes of the to-be-tested product in position, and the test needles are inserted into or pulled out of the corresponding connecting holes. The electric appliance detection machine provided by the utility model can solve the problem of how to improve the applicability of the electric appliance detection machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric appliance detection, and specifically relates to an electric appliance detection machine. BACKGROUND

[0002] In the electric appliance manufacturing industry, quality detection of electric appliances is a key link to ensure product safety and functionality. This link not only concerns the user experience of consumers, but also directly affects the brand image and market competitiveness of enterprises. Traditional electric appliance performance detection usually relies on special electric appliance detection machines, one of the core components of which is a test needle. The test needle is responsible for forming an electrical connection with the connection hole of the electric appliance during the detection process, so that the electric appliance detection machine can measure various performance indicators of the electric appliance.

[0003] However, the existing electric appliance detection machine design has a significant limitation: the position of the test needle is usually fixedly installed to adapt to the layout of the connection hole of a specific electric appliance product. Although this design simplifies the detection process and improves detection efficiency, it greatly limits the versatility and flexibility of the detection machine. Once the position of the test needle of the detection machine is determined, it means that it can only detect electric appliance products of a specific specification or model, and cannot adapt to products of other specifications. With the increasing diversification of the electric appliance market, the positions and spacings of the connection holes of electric appliances of different brands and models often differ, which makes the existing electric appliance detection machine appear to be inadequate when facing products of non-design specifications, and cannot meet the diversified needs of the market. In order to solve this problem, manufacturers have to equip each specification of electric appliance product with a dedicated detection machine, which not only increases production costs and reduces production efficiency, but also occupies a large amount of storage space and maintenance resources.

[0004] Therefore, in view of the current problems of narrow application range and insufficient flexibility of electric appliance detection machines, it is necessary to develop a new type of electric appliance detection machine. UTILITY MODEL CONTENTS

[0005] (I) Technical problem solved

[0006] The utility model provides an electric appliance detection machine, and at least the technical problem solved is: how to improve the applicability of the electric appliance detection machine.

[0007] (II) Technical scheme

[0008] To solve the above technical problems, the utility model provides the following technical scheme: an electric appliance detection machine, comprising:

[0009] A rack is provided with a positioning slot for positioning the product to be tested;

[0010] The joint comprises two test needles for being inserted into two connecting holes of a product to be tested, and the adjusting device is in driving connection with one or both of the test needles of the joint and is used to drive the two test needles to move towards or away from each other so that the distance between the two test needles is the same as the distance between the two connecting holes of the product to be tested.

[0011] The joint driving device is arranged on the frame and is in driving connection with the adjusting device, and is used to drive the adjusting device to move relative to the positioning groove so that the test needles of the joint are in one-to-one correspondence with the connecting holes of the product to be tested and the test needles are inserted into or pulled out of the corresponding connecting holes.

[0012] Further, the joint driving device comprises an X-axis driving mechanism, a Y-axis driving mechanism and a Z-axis driving mechanism, the X-axis driving mechanism is arranged on the frame, the output end of the X-axis driving mechanism is connected with the Y-axis driving mechanism, the X-axis driving mechanism is used to drive the Y-axis driving mechanism to displace along the X-axis direction, the output end of the Y-axis driving mechanism is connected with the Z-axis driving mechanism, the Y-axis driving mechanism is used to drive the Z-axis driving mechanism to displace along the Y-axis direction, and the output end of the Z-axis driving mechanism is connected with the adjusting device, and the Z-axis driving mechanism is used to drive the adjusting device to displace along the Z-axis direction.

[0013] Further, the joint driving device comprises an X-axis driving mechanism, a Y-axis driving mechanism and a Z-axis driving mechanism, the X-axis driving mechanism is arranged on the frame, the output end of the X-axis driving mechanism is connected with the Y-axis driving mechanism, the X-axis driving mechanism is used to drive the Y-axis driving mechanism to displace along the X-axis direction, the output end of the Y-axis driving mechanism is connected with the Z-axis driving mechanism, the Y-axis driving mechanism is used to drive the Z-axis driving mechanism to displace along the Y-axis direction, and the output end of the Z-axis driving mechanism is connected with the adjusting device, and the Z-axis driving mechanism is used to drive the adjusting device to displace along the Z-axis direction.

[0014] Further, the positioning groove is provided with at least two, the number of the adjusting devices is the same as that of the positioning grooves, each of the adjusting devices and the positioning grooves is equidistantly distributed along the X-axis direction, and each of the adjusting devices is connected with the output end of the same Z-axis driving mechanism.

[0015] Further, the adjusting device comprises:

[0016] The rack is slidably arranged on the output end of the Z-axis driving mechanism along the X-axis direction and is fixedly connected with the test needles;

[0017] The gear is rotatably arranged on the output end of the Z-axis driving mechanism and is in meshing connection with the rack, the number of the gears is the same as that of the joints and each gear corresponds to one joint;

[0018] The rotary motor is fixedly arranged on the output end of the Z-axis driving mechanism and is in driving connection with the gear, and the rotary motor is used to drive the gear to rotate so as to drive the rack and the test needles to displace along the X-axis direction.

[0019] Further, the adjusting device further comprises a synchronous transmission assembly, and the rotary motor is provided with at least one, the at least one rotary motor is in driving connection with each gear through the same synchronous transmission assembly, the synchronous transmission assembly is used to drive each gear to synchronously rotate and make the rotating speed and the rotating angle of each gear consistent.

[0020] Further, the synchronous transmission assembly comprises driven wheels and a synchronous belt, the gear and at least one driven wheel are fixed on the same rotating shaft, the driven wheels of adjacent rotating shafts are opposite to each other and are connected by a synchronous belt, the output end of the rotating motor is provided with a driving wheel, the driving wheel is connected with one of the driven wheels by a synchronous belt, the outer periphery of the driving wheel and the driven wheel is provided with a tooth part, and the synchronous belt is provided with a tooth groove matched with the tooth part.

[0021] Further, the number of the rotating motor is two, and the number of the driving wheel is two, the same rotating shaft has two driven wheels arranged in front and back, one of the driving wheels is connected with one of the driven wheels on the front side by a synchronous belt, and the other driving wheel is connected with one of the driven wheels on the rear side by a synchronous belt.

[0022] Further, the rack is provided with at least two position switches, and the two position switches are located on the two sides of the positioning groove respectively, and are used for limiting the limit position of the joint relative to the positioning groove.

[0023] (Three) beneficial effects

[0024] Compared with the prior art, the electric appliance detection machine has the following beneficial effects:

[0025] The electric appliance detection machine provided by the utility model is used, first, according to the interval of the two connecting holes of the product to be detected, the adjusting device adjusts the interval of the two test needles of the joint to be consistent, then, the product to be detected is put into the positioning groove, and the joint driving device drives the adjusting device and the joint to move relative to the product to be detected in the positioning groove, so that the adjusted test needle corresponds to the position of the connecting hole of the product to be detected, then, the joint driving device drives the adjusting device and the joint to move towards the product to be detected in the positioning groove, so that the test needle is inserted into the corresponding connecting hole, thereby realizing the electrical connection between the electric appliance detection machine and the product to be detected, so that the electric appliance detection machine detects the quality of the product to be detected, after detection, the joint driving device drives the adjusting device and the joint to move away from the product to be detected in the positioning groove, so that the test needle is pulled out of the corresponding connecting hole, finally, the detected product is taken out from the positioning groove, so as to put the next product to be detected for quality detection. It can be seen that the electric appliance detection machine can adjust the position of the test needle through the cooperation of the adjusting device and the joint driving device, so as to adapt to the layout of the connecting holes of products of different models and specifications, thereby effectively improving the applicability of the electric appliance detection machine. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a perspective view of the electric appliance detection machine in the embodiment;

[0027] Figure 2 It is a perspective view of the electric appliance detection machine in the embodiment; Figure 1 It is an enlarged schematic view of A in the embodiment;

[0028] Figure 3 Structure diagram of the joint, the adjusting device, the joint driving device and the product to be tested in the embodiment;

[0029] Figure 4 Structure diagram of the joint, the adjusting device and the joint driving device in the embodiment;

[0030] Figure 5 Structure diagram of the joint and the adjusting device in the embodiment.

[0031] Reference signs:

[0032] 1, frame; 11, positioning groove; 12, let-out hole; 13, slide rail;

[0033] 2, joint; 21, test needle;

[0034] 3, adjusting device; 31, rack; 32, gear; 33, rotary motor; 331, driving wheel; 34, synchronous transmission assembly; 341, driven wheel; 3411, tooth part; 342, synchronous belt; 3421, tooth groove; 35, rotating shaft;

[0035] 4, joint driving device; 41, X-axis driving mechanism; 42, Y-axis driving mechanism; 43, Z-axis driving mechanism;

[0036] 5, position switch;

[0037] 6, product to be tested; 61, connecting hole;

[0038] 7, slide plate. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0040] The utility model provides a kind of electric appliance detection machine, for how to improve the applicability of electric appliance detection machine.

[0041] Referring to Figure 1 , Figure 2 and Figure 3 As shown in Figure 1 for the perspective view of the electric appliance detection machine in the embodiment, Figure 2 for Figure 1 enlarged schematic view of A in the embodiment, Figure 3For the structure schematic diagram of the joint, the adjusting device, the joint driving device and the product to be detected in the embodiment, the electric appliance detection machine comprises a frame 1, a joint 2, an adjusting device 3 and a joint driving device 4.

[0042] The frame 1 is provided with a positioning groove 11 for positioning the product to be detected 6.

[0043] The joint 2 comprises two test needles 21 for plug-in cooperation with the connecting holes 61 of the product to be detected 6. The adjusting device 3 is in driving connection with one or two test needles 21 of the joint 2, and the adjusting device 3 is used to drive the two test needles 21 of the joint 2 to move towards or away from each other, so that the interval of the two test needles 21 is the same as the interval of the two connecting holes 61 of the product to be detected 6.

[0044] The joint driving device 4 is installed on the frame 1, and the joint driving device 4 is in driving connection with the adjusting device 3. The joint driving device 4 is used to drive the adjusting device 3 to move relative to the positioning groove 11, so that the test needles 21 of the joint 2 are in one-to-one correspondence with the connecting holes 61 of the product to be detected 6, and the test needles 21 are inserted into or pulled out of the corresponding connecting holes 61.

[0045] When the above technical solution is used, first, according to the interval of the two connecting holes 61 of the product to be detected 6, the adjusting device 3 adjusts the interval of the two test needles 21 of the joint 2 to be the same. Then, the product to be detected 6 is placed into the positioning groove 11, and at the same time, the joint driving device 4 drives the adjusting device 3 and the joint 2 to move relative to the product to be detected 6 in the positioning groove 11, so that the adjusted test needles 21 are in one-to-one correspondence with the connecting holes 61 of the product to be detected 6. Next, the joint driving device 4 drives the adjusting device 3 and the joint 2 to move towards the product to be detected 6 in the positioning groove 11, so that the test needles 21 are inserted into the corresponding connecting holes 61, thereby realizing the electrical connection between the electric appliance detection machine and the product to be detected 6, so that the electric appliance detection machine can detect the quality of the product to be detected. After the detection is completed, the joint driving device 4 drives the adjusting device 3 and the joint 2 to move away from the product to be detected 6 in the positioning groove 11, so that the test needles 21 are pulled out of the corresponding connecting holes 61. Finally, the detected product is taken out of the positioning groove 11, so as to be placed into the next product to be detected 6 for quality detection. It can be seen that the electric appliance detection machine can adjust the position of the test needles 21 through the cooperation of the adjusting device 3 and the joint driving device 4, so as to adapt to the layout of the connecting holes 61 of products of different models and specifications, thereby effectively improving the applicability of the electric appliance detection machine.

[0046] Referring to Figure 2 As shown in the figure, the positioning groove 11 is provided with a clearance hole 12 for the two test needles 21 of the joint 2 to pass through, so that the test needles 21 are inserted into the corresponding connecting holes 61 of the product to be detected 6 from the clearance hole 12.

[0047] Referring to Figure 3 andFigure 4 As shown, Figure 4 Schematic diagram of the structure of the joint, the adjusting device and the joint drive device in the embodiment. In one embodiment of the joint drive device 4, the joint drive device 4 includes an X-axis drive mechanism 41, a Y-axis drive mechanism 42 and a Z-axis drive mechanism 43. The X-axis drive mechanism 41 is mounted on the frame 1 by screwing or welding, and the output end of the X-axis drive mechanism 41 is connected to the Y-axis drive mechanism 42 by screwing or welding, and the X-axis drive mechanism 41 is used to drive the Y-axis drive mechanism 42 to move along the X-axis direction. The output end of the Y-axis drive mechanism 42 is connected to the Z-axis drive mechanism 43 by screwing or welding, and the Y-axis drive mechanism 42 is used to drive the Z-axis drive mechanism 43 to move along the Y-axis direction. The output end of the Z-axis drive mechanism 43 is connected to the adjusting device 3 by screwing or welding, and the Z-axis drive mechanism 43 is used to drive the adjusting device 3 to move along the Z-axis direction. Wherein, the direction in which the two test pins 21 approach or move away from each other is the X-axis direction, the vertical direction is the Z-axis direction, and the direction perpendicular to both the X-axis and the Z-axis is the Y-axis direction. In this way, when the connector driving device 4 needs to adjust the position of the test needle 21, first, the X-axis driving mechanism 41 and the Z-axis driving mechanism 43 cooperate to drive the adjustment device 3 and the connector 2 to move along the X-axis and Z-axis directions, so that the test needle 21 of the connector 2 can be positioned opposite to the connection hole 61 of the product to be tested 6 and located on the same straight line. Then, the Y-axis driving mechanism 42 can drive the adjustment device 3 and the connector 2 to move along the Y-axis toward the product to be tested 6 in the positioning groove 11, so that the test needle 21 can be inserted into the corresponding connection hole 61. After the detection is completed, the Y-axis driving mechanism 42 can drive the adjustment device 3 and the connector 2 to move along the Y-axis away from the product to be tested 6 in the positioning groove 11, so that the test needle 21 can be pulled out of the corresponding connection hole 61.

[0048] The above-mentioned X-axis drive mechanism 41 and Z-axis drive mechanism 43 can both use any linear displacement drive mechanism such as the existing synchronous belt 342 type linear module, ball screw linear module or linear motor linear module, and the Y-axis drive mechanism 42 can use the existing telescopic cylinder, telescopic pole or linear module and other linear displacement drive mechanisms.

[0049] See Figure 3 As shown, on the basis of the above embodiment, slide rails 13 can be installed on the output end of the frame 1, the X-axis drive mechanism 41 and the output end of the Y-axis drive mechanism 42. These three slide rails 13 are respectively slidably connected to the Y-axis drive mechanism 42, the Z-axis drive mechanism 43 and the adjustment device 3, which can respectively improve the stability of the movement process of the adjustment device 3 and the joint 2 in the X-axis, Y-axis and Z-axis directions.

[0050] See Figure 1 and Figure 3As shown, on the basis of the above embodiment, the number of positioning grooves 11 is at least two, the number of adjusting devices 3 is same as that of the positioning grooves 11, each adjusting device 3 and the positioning groove 11 are equidistantly distributed along the X-axis direction, and each adjusting device 3 is connected with the output end of the same Z-axis driving mechanism 43. In the embodiment, the number of the positioning grooves 11 is five, and five products 6 to be tested can be positioned. In this way, the joint driving device 4 can drive multiple joints 2 to be electrically connected with the corresponding products 6 to be tested at the same time, and the performance of multiple products 6 to be tested can be tested at the same time, so that the testing efficiency is greatly improved, and the equipment cost is reduced.

[0051] As shown in Figure 4 and Figure 5 , Figure 5 is a structural schematic view of the joint and the adjusting device in the embodiment. In one embodiment of the adjusting device 3, the adjusting device 3 comprises a rack 31, a gear 32 and a rotary motor 33. The rack 31 is slidingly connected to the output end of the Z-axis driving mechanism 43 along the X-axis direction, and the rack 31 is fixedly connected with the test needle 21 by welding or screwing or the like. The gear 32 is rotatably connected to the output end of the Z-axis driving mechanism 43, and the gear 32 is also engaged with the rack 31. The number of the gear 32 is same as that of the joint 2, and each gear 32 corresponds to one joint 2. The rotary motor 33 is fixedly arranged on the output end of the Z-axis driving mechanism 43 by welding or screwing or the like, and the rotary motor 33 is drivingly connected with the gear 32. The rotary motor 33 is used to drive the gear 32 to rotate, so as to drive the rack 31 and the test needle 21 to displace along the X-axis direction. In this way, when the rotary motor 33 is started, the rack 31 and the test needle 21 can be driven to displace along the X-axis direction, so that the two test needles 21 are close to or away from each other, thereby adjusting the distance between the two test needles 21 of the joint 2 in the X-axis direction.

[0052] The above-mentioned rack 31 can be provided with only one, which is fixedly connected with one test needle 21 of the joint 2. In this way, when the gear 32 rotates, one rack 31 and one test needle 21 can be driven to slide, so that the two test needles 21 move towards or away from each other. Alternatively, the above-mentioned rack 31 can be provided with two, which are respectively fixedly connected with the two test needles 21 of the joint 2, and the two racks 31 are centrally symmetrically distributed relative to the axis of the gear 32 (as shown in Figure 4 and Figure 5 ). In this way, when the gear 32 rotates, the two racks 31 can be synchronously driven to slide towards or away from each other, so that the two test needles 21 move towards or away from each other. The above-mentioned rotary motor 33 can use an existing rotary driving motor.

[0053] As shown in Figure 4 and Figure 5As shown, based on the above-mentioned embodiment in which the two test needles 21 move toward or away from each other along the X-axis direction, the two test needles 21 of the same connector 2 can be slidably connected to the same slide 7, and the slide 7 extends along the X-axis direction. This can ensure that the two test needles 21 of the same connector 2 are always at the same height, thereby improving the accuracy of position control of the test needles 21.

[0054] See Figure 4 and Figure 5 As shown, based on the embodiment in which the above-mentioned adjusting device 3 includes a rack 31, a gear 32 and a rotating motor 33, the adjusting device 3 also includes a synchronous transmission component 34, and the number of the rotating motor 33 is at least one, and at least one rotating motor 33 is connected to each gear 32 through the same synchronous transmission component 34. The synchronous transmission component 34 is used to drive each gear 32 to rotate synchronously, and to make the rotation speed and rotation angle of each gear 32 consistent. In this way, the adjusting device 3 can make the sliding distance of the rack 31 the same through the synchronous transmission component 34, drive all gears 32 to rotate synchronously, and at the same time adjust the spacing between adjacent test pins 21 of multiple connectors 2, further improving the test efficiency, and the synchronous transmission component 34 can also make the spacing adjustment of the two test pins 21 of the same connector 2 in the X-axis direction more precise.

[0055] See Figure 4 and Figure 5 As shown, in one embodiment of the synchronous transmission assembly 34, the synchronous transmission assembly 34 includes a driven pulley 341 and a synchronous belt 342. The gear 32 and at least one driven pulley 341 are fixed to the same rotating shaft 35 by means of integral connection or welding. The driven pulleys 341 on adjacent rotating shafts 35 are positioned opposite each other and are connected by a synchronous belt 342. A driving pulley 331 is integrally connected or welded to the output end of the rotating motor 33. The driving pulley 331 is connected to one of the driven pulleys 341 by means of a synchronous belt 342. Both the driving pulley 331 and the driven pulley 341 have teeth 3411 on their outer circumferences, and the synchronous belt 342 has tooth grooves 3421 that mate with the teeth 3411. Thus, when the rotating motor 33 drives the driving pulley 331 to rotate, the synchronous belt 342 drives one of the driven pulleys 341 to rotate, thereby driving the other driven pulleys 341 to rotate synchronously through the synchronous belt 342, ensuring that all driven pulleys 341 have the same rotational speed and rotation angle. The driving wheel 331 and the driven wheel 341 cooperate with the tooth grooves 3421 of the synchronous belt 342 through the tooth portion 3411 to achieve transmission, which can ensure the accuracy of the transmission process of the synchronous transmission component 34.

[0056] See Figure 4 and Figure 5As shown, on the basis of the above embodiment, the number of rotary motors 33 is two, and the number of driving wheels 331 is also two. The same rotating shaft 35 has two driven wheels 341, which are distributed in front and back. One driving wheel 331 is connected with one driven wheel 341 on the front side through a synchronous belt 342, and the other driving wheel 331 is connected with one driven wheel 341 on the back side through a synchronous belt 342. In this way, one rotary motor 33 drives all the driven wheels 341 on the front side to rotate synchronously, and the other rotary motor 33 drives all the driven wheels 341 on the back side to rotate synchronously, which can effectively reduce the transmission error and further improve the precision of the spacing adjustment of the two test needles 21 of the connector 2.

[0057] Referring to Figure 3 As shown, on the basis of any of the above embodiments, the rack 1 is provided with at least two position switches 5, which are respectively arranged on the two sides of the positioning groove 11, for limiting the limit position of the movement of the connector 2 relative to the positioning groove 11. In this way, the position switch 5 can be used to conveniently control the connector driving device 4, and effectively avoid the connector driving device 4 from moving the connector 2 out of the working position.

[0058] The above position switch 5 can use an existing proximity switch.

[0059] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An electrical appliance detection machine characterized by, include: A frame, wherein the frame is provided with a positioning slot for positioning the product to be tested; A connector and an adjustment device, wherein the connector includes two test pins for plugging into the connection holes of the product to be tested, and the adjustment device is drivingly connected to one or both of the test pins of the connector and is used to drive the two test pins of the connector to move toward or away from each other so that the spacing between the two test pins is the same as the spacing between the two connection holes of the product to be tested; The connector driving device is provided on the frame and is in transmission connection with the adjusting device. The connector driving device is used to drive the adjusting device to move relative to the positioning slot so that the test pin of the connector corresponds to the connection hole position of the product to be tested, and the test pin is inserted into or pulled out of the corresponding connection hole.

2. The electrical appliance detection machine of claim 1, wherein, The joint drive device includes an X-axis drive mechanism, a Y-axis drive mechanism and a Z-axis drive mechanism, wherein the X-axis drive mechanism is arranged on the frame, the output end of the X-axis drive mechanism is connected to the Y-axis drive mechanism, and the X-axis drive mechanism is used to drive the Y-axis drive mechanism to move along the X-axis direction, the output end of the Y-axis drive mechanism is connected to the Z-axis drive mechanism, and the Y-axis drive mechanism is used to drive the Z-axis drive mechanism to move along the Y-axis direction, and the output end of the Z-axis drive mechanism is connected to the adjustment device, and the Z-axis drive mechanism is used to drive the adjustment device to move along the Z-axis direction; The direction in which the two test needles approach or move away from each other is the X-axis direction, the vertical direction is the Z-axis direction, and the direction perpendicular to both the X-axis and the Z-axis is the Y-axis direction.

3. The machine according to claim 2, characterized in that, There are at least two positioning slots, the number of the adjustment devices and the positioning slots is the same, the adjustment devices and the positioning slots are evenly spaced along the X-axis direction, and the adjustment devices are connected to the output end of the same Z-axis drive mechanism.

4. The machine according to claim 2 or 3, characterized in that, The regulating device comprises: A rack is provided on the output end of the Z-axis driving mechanism for sliding along the X-axis direction and is fixedly connected to the test needle; a gear rotatably disposed on the output end of the Z-axis drive mechanism and meshing with the rack, wherein the number of the gears and the joints is the same and corresponds one to one; The rotary motor is fixed on the output end of the Z-axis driving mechanism and is connected to the gear transmission. The rotary motor is used to drive the gear to rotate, so as to drive the rack and the test needle to move along the X-axis direction.

5. The machine according to claim 4, characterized in that, The adjusting device also includes a synchronous transmission assembly, and at least one rotating motor is provided. At least one rotating motor is connected to each of the gears through the same synchronous transmission assembly. The synchronous transmission assembly is used to drive each of the gears to rotate synchronously and make the speed and rotation angle of each gear consistent.

6. The machine according to claim 5, characterized in that, The synchronous transmission assembly comprises driven wheels and a synchronous belt, the gear is fixed on the same rotating shaft with at least one of the driven wheels, the positions of the driven wheels of the adjacent rotating shafts are opposite and are connected by a synchronous belt, the output end of the rotary motor is provided with a driving wheel, the driving wheel is connected with one of the driven wheels by a synchronous belt, the outer periphery of the driving wheel and the driven wheel is provided with a tooth part, and the synchronous belt is provided with a tooth groove matched with the tooth part.

7. The machine according to claim 6, characterized in that, The number of the rotary motors is two, the number of the driving wheels is two, the same rotating shaft has two driving wheels arranged in front and back, one of the driving wheels is connected with one of the driving wheels in front by a synchronous belt, and the other driving wheel is connected with one of the driving wheels in back by a synchronous belt.

8. The electrical appliance detection machine of any one of claims 1, 2, 3, 5, 6, and 7, wherein, The rack is provided with at least two position switches, the two position switches are respectively located on the two sides of the positioning groove, and are used for limiting the limit position of the joint relative to the positioning groove.

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