Carrying device for magnetron high-voltage test

Abstract

The utility model discloses a carrying device for magnetron high-voltage testing, which comprises a three-axis mechanical arm, a support arranged at the tail end of the three-axis mechanical arm, a floating plate arranged below the support, a guide column arranged on the floating plate, a first buffer spring arranged between the floating plate and the support and a second buffer spring arranged between the floating plate and the support. The lower side of the floating plate is provided with a test joint assembly and two clamping jaw cylinders, the clamping jaw cylinders are respectively in driving connection with clamping jaws, the end parts of the clamping jaws are provided with wedge tip parts used for being inserted into an annular groove outside a magnetron, the lower part of the test joint assembly is provided with a plug part used for being inserted into a shielding shell of the magnetron, and the plug part is provided with a plug head part used for being inserted into the shielding shell of the magnetron. The lower end of the plug part is open, and a conductive needle used for being in conductive contact with the input end of the magnetron is arranged in the plug part. The carrying device for the magnetron high-voltage test can replace human hands to carry magnetrons, and is beneficial to safety production and reduction of labor intensity.

Description

Technical Field

[0001] The utility model relates to the field of magnetron test auxiliary equipment, and particularly relates to a handling device for high-voltage test of magnetrons. Background Art

[0002] At present, a magnetron is provided in a microwave oven. The structure of the magnetron can refer to the "magnetron" with the Chinese invention patent publication number CN108701572B. During the production process, the magnetron needs to be tested. The magnetron is conveyed through a conveyor line. The test station is on one side of the conveyor line, and a defective product conveyor belt is also provided on the other side of the conveyor line. When the magnetron reaches the corresponding position of the test station, the conveyor line pauses. Workers place the magnetron (semi-finished product) on the fixture on the conveyor line onto the test station, and connect the magnetron to high voltage (about 7000V) to detect various parameters and performance of the magnetron. After the test is completed, workers place the qualified magnetron back onto the fixture, and the conveyor line resumes operation. If the magnetron is unqualified, workers place the magnetron on the defective product conveyor belt. However, due to the involvement of high voltage, the safety of manual operation is low, and the labor intensity is relatively large. Therefore, it is necessary to make improvements. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a handling device for high-voltage test of magnetrons, which is beneficial to safe production and beneficial to reducing labor intensity.

[0004] The purpose of the utility model is achieved through the following technical solutions.

[0005] The disclosed handling device for high-voltage test of magnetrons of the utility model includes a three-axis robotic arm. A bracket is provided at the end of the three-axis robotic arm. A floating plate is provided below the bracket. Guide posts are provided on the floating plate. The guide posts are slidably connected to the bracket up and down. A first buffer spring is provided between the floating plate and the bracket. A test joint assembly and a jaw cylinder are installed on the lower side of the floating plate. The number of the jaw cylinders is set to two. The test joint assembly is provided between the two jaw cylinders. The jaw cylinders are respectively drivingly connected with jaws. A wedge tip for inserting into an annular groove outside the magnetron is formed at the end of the jaw. An insertion head for inserting into the shielding case of the magnetron is provided at the lower part of the test joint assembly. The lower end of the insertion head is open. A conductive needle for electrically contacting the input end of the magnetron is provided in the insertion head.

[0006] Preferably, the test joint assembly includes a joint housing. The upper end of the joint housing is installed and connected to the floating plate. An insulating inner liner is provided in the joint housing. The conductive needle is provided in the insulating inner liner.

[0007] Preferably, the insulating inner container is formed with an inner step, an electrode plate is installed on the lower side of the inner step, the conductive needles are respectively slidably connected to the corresponding electrode plates up and down, a second buffer spring is sleeved on the conductive needles, the upper end of the second buffer spring abuts against the lower side of the electrode plate, the lower end of the conductive needle is formed with a head, and the lower end of the second buffer spring abuts against the upper side of the head.

[0008] Preferably, the lower end of the connector housing is adaptively sleeved with a guide sleeve, and a guiding chamfer is formed on the outer side of the lower end of the guide sleeve.

[0009] Preferably, an electrical connection socket is arranged on the outer side of the connector housing, and the conductive needle is connected to the electrical connection socket.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: by providing a bracket at the end of a three-axis robotic arm, a floating plate is arranged below the bracket, guide posts are arranged on the floating plate, the guide posts are slidably connected to the bracket up and down, a first buffer spring is arranged between the floating plate and the bracket, a test connector assembly and a jaw cylinder are installed on the lower side of the floating plate, the number of jaw cylinders is set to two, the test connector assembly is arranged between the two jaw cylinders, the jaw cylinders are respectively drivingly connected with jaws, a wedge tip for inserting into an annular groove outside the magnetron is formed at the end of the jaw, a plug head for inserting into the shielding case of the magnetron is arranged at the lower part of the test connector assembly, the lower end of the plug head is open, and a conductive needle for electrically contacting the input end of the magnetron is arranged inside the plug head, so that the magnetron high-voltage test handling device of the present utility model can replace manual handling of the magnetron, which is beneficial to safe production and reduction of labor intensity. Description of the Drawings

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the magnetron high-voltage test handling device of the present utility model.

[0012] Figure 2 It is a three-dimensional structural schematic diagram of the fixture assembly of the present utility model.

[0013] Figure 3 It is a three-dimensional structural schematic diagram of the fixture assembly of the present utility model clamping the magnetron

[0014] Figure 4 It is a sectional structural schematic diagram of the fixture assembly of the present utility model clamping the magnetron.

[0015] Figure 5 It is a bottom three-dimensional structural schematic diagram of the test connector assembly of the present utility model.

[0016] Figure 6 It is a three-dimensional structural schematic diagram of the magnetron.

[0017] Figure 7Schematic diagram of the application of the handling device for high-voltage testing of magnetrons of the present utility model.

[0018] Label description: Fixture assembly 1; Bracket 11; Linear bearing 111; Floating plate 12; Guide post 121; First buffer spring 1211; Test joint assembly 13; Joint housing 131; Connecting cover 1310; Insulating inner liner 132; Inner step 1321; Guide sleeve 133; Guide chamfer 1331; Electrode plate 134; Conductive pin 135; Second buffer spring 136; Claw 14; Wedge tip 141; Claw cylinder 140; Power receptacle 15; Lifting cylinder 2; Longitudinal movement seat 3; Longitudinal movement linear module 4; Transverse movement linear module 5; Magnetron 99; Shielding case 991; Input end 9901; Yoke iron 992; Ring groove 9910; Test station 98; Magnetron conveyor line 97; Defective product conveyor belt 96. Specific embodiments

[0019] The present utility model will be further described below with reference to the accompanying drawings.

[0020] The handling device for high-voltage testing of magnetrons of the present utility model, as Figure 1 shown, includes a three-axis robotic arm. A bracket 11 is provided at the end of the three-axis robotic arm. Specifically, the three-axis robotic arm may include a transverse movement linear module 5, a longitudinal movement linear module 4, and a lifting cylinder 2. The linear module is a prior art. For example, the linear module includes a guide rail, a slider, a ball screw pair, and a servo motor. The slider is linearly slidably connected to the guide rail, and the servo motor drives the slider to move through the ball screw pair. The lifting cylinder 2 can be a rod-guided cylinder available on the market. The transverse movement linear module 5 is installed on the gantry. The bottom of the longitudinal movement linear module 4 is installed and connected to the slider of the transverse movement linear module 5. A longitudinal movement seat 3 is installed on the slider of the longitudinal movement linear module 4. The lifting cylinder 2 is installed at the right end of the longitudinal movement seat 3. Thus, the end of the above three-axis robotic arm is the push plate at the end of the piston rod of the lifting cylinder 2. That is to say, the bracket 11 is installed on the lower side of the push plate at the end of the piston rod of the lifting cylinder 2 through corresponding screws; through the above settings, the transverse movement linear module 5 can drive the longitudinal movement linear module 4, the lifting cylinder 2, and the bracket 11 to move back and forth (the "transverse" mentioned here means that the guide rail of the transverse movement linear module 5 extends along the direction perpendicular to the conveying direction of the magnetron conveyor line 97), the longitudinal movement linear module 4 can drive the lifting cylinder 2 and the bracket 11 to move left and right (the "longitudinal" mentioned here means that the guide rail of the longitudinal movement linear module 4 extends along the direction parallel to the conveying direction of the magnetron conveyor line 97), and the lifting cylinder 2 can drive the bracket 11 to move up and down. As Figures 1 to 4As shown, a floating plate 12 is provided below the bracket 11. A guide post 121 is provided on the floating plate 12. The lower end of the guide post 121 is installed on the upper side of the floating plate 12 through corresponding screws. The guide post 121 is slidably connected to the bracket 11 up and down through a linear bearing 111. The number of the guide posts 121 is set to four. A first buffer spring 1211 is provided between the floating plate 12 and the bracket 11 (it should be noted that only Figure 4 the first buffer spring 1211 is schematically drawn). The first buffer spring 1211 can be sleeved outside the corresponding guide post 121. The lower end of the first buffer spring 1211 abuts against the upper side of the floating plate 12, and the upper end of the first buffer spring 1211 abuts against the lower side of the corresponding linear bearing 111. A retaining ring is installed at the upper end of the guide post 121. Thus, the elastic restoring force of the first buffer spring 1211 pushes the floating plate 12 downward so that the above-mentioned retaining ring abuts against the upper side of the upper end of the corresponding linear bearing 111, so that the floating plate 12 and the bracket 11 can have a relatively fixed state. As Figures 2 to 4 shown, a test joint assembly 13 and a jaw cylinder 140 are installed on the lower side of the floating plate 12. The jaw cylinder 140 can be a slide cylinder on the market. The number of the jaw cylinders 140 is set to two. The test joint assembly 13 is arranged between the two jaw cylinders 140. The jaw cylinders 140 are respectively drivingly connected with jaws 14. That is to say, the jaws 14 are installed on the lower side of the slide of the corresponding jaw cylinder 140. A wedge tip 141 for inserting into the annular groove 9910 outside the magnetron 99 is formed at the end of the jaw 14. Thus, the jaws 14 are in a hook shape, and the left and right jaws 14 are arranged facing each other. As Figure 4 and Figure 5 shown, the lower part of the test joint assembly 13 is provided with a plug head for inserting into the shielding case 991 of the magnetron 99. The lower end of the plug head is open. In other words, the test joint assembly 13 has an inverted cup-shaped structure. A conductive pin 135 for electrically contacting the input end 9901 of the magnetron 99 is provided in the plug head. By forming the above-mentioned open structure and placing the conductive pin 135 inside the plug head, the exposure of the conductive pin 135 is avoided, which is beneficial to safe production.

[0021] As Figure 1 Combined Figure 7As shown in the figure, the transverse linear module 5 is installed above the magnetron conveyor line 97. When the magnetron 99 reaches the corresponding position of the test station 98, the fixture on the magnetron conveyor line 97 triggers the opposed photoelectric eye, and the control system controls the magnetron conveyor line 97 to pause according to the on signal of the opposed photoelectric eye. The control system controls the above-mentioned three-axis robotic arm to move the fixture assembly 1 above the magnetron 99 on the fixture. The lifting cylinder 2 drives the fixture assembly 1 to move downward, so that the above-mentioned plug head is inserted into the shielding case 991 of the magnetron 99, and the conductive needle 135 moves downward synchronously to contact the input end 9901. Among them, the input end 9901 includes two end lead pieces, and the two conductive needles 135 respectively contact the above-mentioned end lead pieces. The conductive needle 135 is connected to the high-voltage power supply to connect the magnetron 99 to the power supply. Then the control system controls the jaw cylinder 140 to drive the jaws 14 to move towards the magnetron 99, and the wedge tips 141 of the jaws 14 are respectively inserted into the annular grooves 9910 outside the magnetron 99; specifically, Figure 6 shows the magnetron 99 (semi-finished product), which includes a shielding case 991 and a yoke 992. The yoke 992 is in the shape of a rectangular cylinder, the shielding case 991 is in the shape of a box, and the input end 9901 is arranged inside the shielding case 991, as Figure 4 shown. Since a week of fillets are formed at the bottom of the shielding case 991, and the bottom of the shielding case 991 abuts against the upper side of the yoke 992, an annular groove 9910 structure is formed between the top of the yoke 992 and the bottom of the shielding case 991. After that, the above-mentioned three-axis robotic arm moves the fixture assembly 1 upward away from the fixture on the magnetron conveyor line 97, and the above-mentioned three-axis robotic arm moves the fixture assembly 1 to the test station 98. During this period, when the magnetron 99 is being transported, the conductive needle 135 remains energized, so that the cathode of the magnetron 99 is preheated, which is beneficial for the magnetron 99 to quickly enter the rated working state at the test station 98 and is beneficial for improving work efficiency. After the test, if the magnetron 99 passes the test, the above-mentioned three-axis robotic arm will put the magnetron 99 back on the fixture on the magnetron conveyor line 97, and the fixture assembly 1 releases the magnetron 99 (that is, the jaw cylinder 140 drives the wedge tip 141 to disengage from the magnetron 99), and the above-mentioned three-axis robotic arm moves the fixture assembly 1 back to its original position; if the magnetron 99 fails the test, the above-mentioned three-axis robotic arm will put the magnetron 99 on the defective product conveyor belt 96, the fixture assembly 1 releases the magnetron 99, and the above-mentioned three-axis robotic arm moves the fixture assembly 1 back to its original position. As Figure 4 and Figure 6As shown, since the wall thickness of the outer shell of the magnetron 99 (including the shielding shell 991 and the yoke 992) is small and it is prone to deformation, it is not convenient to clamp the magnetron 99 with a large clamping force. And since the outer wall of the outer shell of the magnetron 99 is approximately a vertical plane, it is not easy for a conventional clamping structure to firmly clamp the magnetron 99. However, with the structure of the wedge tip 141 of the present utility model inserted into the annular groove 9910, the clamping jaw 14 and the outer shell of the magnetron 99 are relatively well positioned in the up and down directions, avoiding accidental dropping of the magnetron 99 and also avoiding relying on the friction force between the clamping jaw 14 and the outer shell of the magnetron 99 to position the magnetron 99, thus avoiding the need to increase the clamping force setting of the clamping jaw cylinder 140. Due to the provision of the first buffer spring 1211, when the above-mentioned plug head is inserted into the shielding shell 991, if the plug head collides with the upper end of the shielding shell 991, the first buffer spring 1211 can elastically compress and deform to buffer the collision, that is, the floating plate 12 can float upward relative to the bracket 11, which can avoid damaging the magnetron 99. During the process of the floating plate 12 floating upward relative to the bracket 11, the guide post 121 slides in the linear bearing 111, as Figure 4 shown, the bracket 11 is provided with a hollow structure for avoiding the guide post 121. The first buffer spring 1211 can also buffer the collision between the conductive pin 135 and the input terminal 9901. Figure 6 The shielding shell 991 of the magnetron 99 shown also needs to be covered with a protective cover in subsequent processes.

[0022] As can be seen from the above, the handling device for high-voltage testing of the magnetron of the present utility model can replace manual handling of the magnetron 99, which is beneficial to safe production and to reducing labor intensity.

[0023] Furthermore, as Figure 4 and Figure 5 shown, the test joint assembly 13 includes a joint housing 131. The joint housing 131 can be made of steel to increase the structural strength of the test joint assembly 13. The upper end of the joint housing 131 is installed and connected to the floating plate 12. Specifically, the lower part of the joint housing 131 is a tubular structure, and the upper part of the joint housing 131 is a connecting cover 1310. The above-mentioned tubular structure and the connecting cover 1310 are connected by corresponding screws. Specifically, the connecting cover 1310 is installed on the lower side of the floating plate 12 by corresponding screws. An insulating inner liner 132 is provided inside the joint housing 131. The insulating inner liner 132 can be made of nylon, and the conductive pin 135 is arranged inside the insulating inner liner 132. The insulating inner liner 132 is also an assembled structure, which is convenient for installing conductive parts into the insulating inner liner 132. By providing the insulating inner liner 132 to insulate the conductive pin 135 from the joint housing 131, it is beneficial to safe production.

[0024] Furthermore, as Figure 5 shown, the insulating inner liner 132 is formed with an inner step 1321. The inner step 1321 is an inverted circular ring-shaped step structure, asFigure 4 As shown, an electrode plate 134 is installed on the lower side of the inner step 1321. As Figure 5 shown, the electrode plate 134 is fan-shaped. As Figure 4 and Figure 5 shown, the conductive needles 135 are respectively connected to the corresponding electrode plates 134 in a vertically sliding manner. A second buffer spring 136 is sleeved on the conductive needle 135. The upper end of the second buffer spring 136 abuts against the lower side of the electrode plate 134. A head 1351 is formed at the lower end of the conductive needle 135. The lower end of the second buffer spring 136 abuts against the upper side of the head 1351. That is to say, the conductive needle 135 is adapted to pass through the corresponding electrode plate 134. A snap ring can be installed on the upper part of the conductive needle 135. The above snap ring is located on the upper side of the electrode plate 134. Thus, the snap ring can prevent the conductive needle 135 from disengaging downward from the corresponding electrode plate 134. The upper end of the conductive needle 135 can be welded to the corresponding wire. By arranging the conductive needle 135 to be vertically slidably connected to the corresponding electrode plate 134 and the second buffer spring 136, when the conductive needle 135 moves downward and collides with the terminal tab of the corresponding input end 9901, the second buffer spring 136 can be elastically compressed and deformed to buffer the collision, avoid the input end 9901 from being deformed by the collision, and is also beneficial to the durability of the test joint assembly 13.

[0025] Furthermore, as Figure 4 and Figure 5 shown, a guide sleeve 133 is properly sleeved on the lower end of the joint housing 131. A guiding chamfer 1331 is formed on the outer side of the lower end of the guide sleeve 133. The guide sleeve 133 can be made of nylon and can be fixed to the joint housing 131 by a set screw; the above plug head specifically includes the guide sleeve 133, the lower end of the joint housing 131 and the lower end of the insulating inner bladder 132. By arranging the guiding chamfer 1331, the above plug head has a shape with a smaller lower part and a larger upper part. When the above plug head is inserted into the shielding case 991, the guiding chamfer 1331 can slide upward relative to the upper edge of the shielding case 991. And because the floating plate 12 is floatingly arranged relative to the bracket 11, the above plug head can be prevented from damaging the magnetron 99.

[0026] Furthermore, as Figure 2 shown, a power connection socket 15 is provided on the outer side of the joint housing 131. The housing of the power socket 15 can be installed on the joint housing 131 by corresponding screws. The conductive needle 135 is connected to the power connection socket 15 by a wire. When the power connection socket 15 is connected to an external power supply line, the conductive needle 135 can be powered on; when overhauling the handling device of the present invention, it is convenient to separate the power connection socket 15 from the external power supply line, which is beneficial to work safety.

Claims

1. A handling device for high voltage testing of a magnetron, characterized in that: The invention comprises a three-axis mechanical arm, wherein a bracket (11) is provided at the end of the three-axis mechanical arm, a floating plate (12) is provided below the bracket (11), a guide column (121) is provided on the floating plate (12), the guide column (121) is connected to the bracket (11) by sliding up and down, a first buffer spring (1211) is provided between the floating plate (12) and the bracket (11), a test joint assembly (13) and a clamping claw cylinder (140) are installed on the lower side of the floating plate (12), the number of the clamping claw cylinder (140) is set to two, and the test joint assembly (13) and the clamping claw cylinder (140) are provided on the lower side of the floating plate (12). 3) is arranged between the two clamping jaw cylinders (140), the clamping jaw cylinders (140) are respectively driven and connected to clamping jaws (14), the ends of the clamping jaws (14) are formed with wedge tips (141) for inserting into the annular groove (9910) outside the magnetron (99), the lower part of the test connector assembly (13) is provided with a plug part for inserting into the shielding shell (991) of the magnetron (99), the lower end of the plug part is open, and the plug part is provided with a conductive pin (135) for conductively contacting the input end (9901) of the magnetron (99).

2. The magnetron high voltage test handling device according to claim 1, characterized in that: The test connector assembly (13) comprises a connector housing (131), the upper end of the connector housing (131) being mounted and connected to the floating plate (12), an insulating liner (132) being provided in the connector housing (131), and the conductive needle (135) being provided in the insulating liner (132).

3. The magnetron high voltage test handling device according to claim 2, characterized in that: The insulating liner (132) is formed with an inner step (1321), and an electrode plate (134) is installed on the lower side of the inner step (1321). The conductive needle (135) is connected to the corresponding electrode plate (134) by sliding up and down respectively. The conductive needle (135) is sleeved with a second buffer spring (136), and the upper end of the second buffer spring (136) is in contact with the lower side of the electrode plate (134). The lower end of the conductive needle (135) is formed with a head (1351), and the lower end of the second buffer spring (136) is in contact with the upper side of the head (1351).

4. The magnetron high voltage test handling device according to claim 3, characterized in that: The lower end portion of the joint housing (131) is adapted to be provided with a guide sleeve (133), and a guide chamfer (1331) is formed on the outer side of the lower end of the guide sleeve (133).

5. The magnetron high voltage test handling device according to claim 2, characterized in that: An electrical connection socket (15) is provided on the outer side of the joint housing (131), and the conductive pin (135) is connected to the electrical connection socket (15).

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