Testing machine for microswitch

Abstract

The utility model relates to a testing machine for a microswitch. The key points of the technical scheme are that the testing machine comprises a detection track; a positioning mechanism is arranged on one side of the detection track; a plurality of positioning holes correspondingly matched with the positioning mechanisms are formed in the detection track; the positioning mechanism is in sliding connection with the positioning hole; a translation mechanism is arranged on the other side of the detection track; the detection track is provided with a sliding groove correspondingly matched with the translation mechanism. The translation mechanism is in sliding connection with the sliding groove; a pressing mechanism is arranged above the detection track; a screening mechanism is arranged at the tail end of the detection track; according to the invention, the test of the microswitch can be automatically completed, unqualified finished products are screened out, and the unqualified finished products are prevented from flowing into the market.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, and more specifically, it relates to a testing machine for microswitches. Background Art

[0002] A microswitch is a device in which an external mechanical force acts on an operating reed through a transmission element, such as a push pin, button, lever, roller, etc. When the operating reed is displaced to a critical point, an instantaneous action occurs, causing the moving contact at the end of the operating reed to quickly connect or disconnect from the fixed contact.

[0003] During the production process of microswitches, it is necessary to test the performance of microswitches to ensure the qualified rate of microswitch production. After the microswitches are assembled, they need to undergo a series of tests, including detecting the performance of pre-pressing the switch, pressing force, pressing stroke, and whether the resistance is conductive. Defective finished products that do not meet the standards are screened out to prevent them from entering the market. In the prior art, for the detection of microswitches, manual operation or multiple separate devices are required for detection, resulting in low work efficiency, unstable detection, and the existing detection devices often have disadvantages such as complex structure and high cost. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a testing machine for microswitches to solve the above technical problems.

[0005] The above technical objective of the present utility model is achieved through the following technical solutions: A testing machine for microswitches includes: a detection track; a positioning mechanism is arranged on one side of the detection track; a number of positioning holes corresponding and adapted to the positioning mechanism are arranged on the detection track; the positioning mechanism is slidably connected to the positioning holes; a translation mechanism is arranged on the other side of the detection track; a chute corresponding and adapted to the translation mechanism is arranged on the detection track; the translation mechanism is slidably connected to the chute; a pressing mechanism is arranged above the detection track; a screening mechanism is arranged at the end of the detection track.

[0006] When testing a microswitch, place the microswitch on a detection track. First, move the microswitch under the pressing mechanism through a translation mechanism, and fix the position of the microswitch through a positioning mechanism to ensure that the position of the microswitch remains constant when the pressing mechanism presses the microswitch. Press the microswitch through the pressing mechanism, and detect the performance of the microswitch such as pre-pressing switch, pressing force, pressing stroke, and whether the resistance is conductive. The detected data is sent to the PLC controller. Then, the translation mechanism moves the microswitch to the screening mechanism, and the PLC controller controls the screening mechanism to screen and classify the microswitch, so as to screen out the unqualified defective products and prevent the defective products from flowing into the market. Among them, the positioning mechanism, translation mechanism, pressing mechanism, and screening mechanism are all electrically connected to the PLC controller.

[0007] Optionally, the positioning mechanism includes: a positioning cylinder; a positioning push plate is arranged at the output end of the positioning cylinder; a plurality of positioning rods corresponding to and adapted to a plurality of positioning holes are arranged on the positioning push plate; the plurality of positioning rods are slidably connected to the plurality of positioning holes.

[0008] Specifically, a plurality of brake blocks are arranged on the detection track, and each position where a brake block is located is used as a work station. After the translation mechanism moves the microswitch to the position of the brake block, the translation mechanism stops moving, and the brake block stops the microswitch from moving. The positioning cylinder drives the positioning push plate to move forward, and the positioning rod is inserted into the positioning hole. At this time, the positioning rod is inserted into the corresponding through hole on the microswitch, and the position of the microswitch can be fixed. After the microswitch completes the test at the corresponding work station, the positioning cylinder drives the positioning push plate to retract, the positioning rod disengages from the through hole on the microswitch, and the translation mechanism moves the microswitch to the next work station.

[0009] Optionally, the translation mechanism includes: a horizontal push cylinder; a translation push plate is arranged at the output end of the horizontal push cylinder; a translation cylinder is arranged on the translation push plate; a vertical movement push plate is arranged at the output end of the translation cylinder; a plurality of insertion rods are arranged on the vertical movement push plate; the plurality of insertion rods are slidably connected to the chute.

[0010] When it is necessary to move the microswitch, first push the vertical movement push plate through the translation cylinder, so that the insertion rods on the vertical movement push plate pass through the chute and are inserted into the through holes on the microswitch. Then, push the translation push plate to move through the horizontal push cylinder. After the microswitch moves to the next work station, the horizontal push cylinder stops moving, and the translation cylinder drives the vertical movement push plate to retract, and the insertion rods disengage from the through holes of the microswitch.

[0011] Optionally, the pressing mechanism includes: a mounting bracket; a first pressing component, a second pressing component, and a third pressing component are sequentially arranged on the mounting bracket along the detection track; a first electrical measurement conductor is arranged on the positioning push plate and directly below the second pressing component; a second electrical measurement conductor is arranged on the positioning push plate and directly below the third pressing component.

[0012] Specifically, the first pressing component is used to pre-press the microswitch to complete the running-in of the components inside the microswitch. The second pressing component is used to test whether the resistance of the microswitch is conductive when pressed. The third pressing component is used to test the pressing force and pressing stroke of the microswitch.

[0013] After the translation mechanism moves the microswitch to the station corresponding to the first pressing component, the first pressing component pre-presses the microswitch to complete the running-in of the components inside the microswitch.

[0014] After the translation mechanism moves the microswitch to the station corresponding to the second pressing component, the positioning mechanism fixes the microswitch. At this time, the first electrical measurement conductor on the positioning push plate contacts each pin of the microswitch and powers on the microswitch. When the second pressing component presses the microswitch, the electrical signal generated by the microswitch is transmitted to the PLC controller, and the PLC controller can obtain whether the resistance of the microswitch is conductive according to the electrical signal.

[0015] After the translation mechanism moves the microswitch to the station corresponding to the third pressing component, the positioning mechanism fixes the microswitch. At this time, the second electrical measurement conductor on the positioning push plate contacts each pin of the microswitch and powers on the microswitch. When the third pressing component presses the microswitch, the pressing stroke and pressing force of the third pressing component are obtained according to the conduction situation of the microswitch, and then the pressing force and pressing stroke of the microswitch can be determined.

[0016] Optionally, the first pressing component includes: a pressing motor; the pressing motor is arranged on the mounting bracket; a rocker arm is arranged at the output end of the pressing motor; a connecting rod is rotatably connected to the end of the rocker arm; a first pressing head is rotatably connected to the end of the connecting rod away from the rocker arm; a guide rail is arranged on the mounting bracket; the first pressing head is slidably connected to the guide rail.

[0017] When running in the microswitch, start the pressing motor, drive the rocker arm to rotate through the pressing motor, the connecting rod swings under the action of the rocker arm, and pushes the first pressing head to perform reciprocating up and down movement along the guide rail, so as to pre-press the microswitch and ensure that the running-in of the microswitch is completed.

[0018] Optionally, the second pressing component includes: a pressing cylinder; the pressing cylinder is arranged on the mounting bracket; a second pressing head is arranged at the output end of the pressing cylinder.

[0019] When testing the contact resistance of the microswitch, the second pressing head is driven to descend by pressing the air cylinder, and the microswitch is pressed by the second pressing head. At this time, the contact resistance of the microswitch is obtained through the first electrical measurement conductor to determine whether the resistance is conducted when the microswitch is in contact.

[0020] Optionally, the third pressing assembly includes: an electric slide table; the electric slide table is arranged on the mounting frame; a third pressing head is arranged at the output end of the electric slide table.

[0021] A pressure sensor is arranged on the third pressing head. When testing the pressing stroke and pressing force of the microswitch, the third pressing head is driven to move downward by the electric slide table, and the pressing force applied by the electric slide table to the third pressing head and the pressing stroke of the third pressing head from contacting the microswitch to the microswitch being conducted are detected when the microswitch is conducted instantaneously.

[0022] Optionally, the screening mechanism includes: a rotary air cylinder; a blocking piece is arranged at the output end of the rotary air cylinder; a three-way pipe is arranged at the end of the detection track; the inlet of the three-way pipe is communicated with the detection track; a good product box is arranged at the first outlet of the three-way pipe; a defective product box is arranged at the second outlet of the three-way pipe; the blocking piece is arranged at the connection of the inlet, the first outlet and the second outlet of the three-way pipe.

[0023] After the microswitch is tested by the first pressing assembly, the second pressing assembly and the third pressing assembly, the PLC controller can output whether the microswitch is qualified according to the test results. If it is qualified, the PLC controller controls the rotary air cylinder to rotate the blocking piece to connect the inlet and the first outlet of the three-way pipe. At this time, the microswitch enters from the inlet of the three-way pipe and drops into the good product box from the first outlet. If it is unqualified, the PLC controller controls the rotary air cylinder to rotate the blocking piece to connect the inlet and the second outlet of the three-way pipe. At this time, the microswitch enters from the inlet of the three-way pipe and drops into the defective product box from the second outlet. Thus, the screening and classification of the microswitch can be completed.

[0024] Optionally, it further includes a feeding mechanism. The feeding mechanism includes: a feeding track; a vibrating disk is arranged at one end of the feeding track; a transverse moving assembly is arranged at the other end of the feeding track; a pushing assembly is arranged on one side of the feeding track; when the transverse moving assembly receives the microswitch conveyed by the feeding track, the transverse moving assembly moves the microswitch and connects it with the detection track, and the pushing assembly pushes the microswitch to the translation mechanism.

[0025] There are several microswitches to be tested inside the vibrating bowl. Through the vibration feeding of the vibrating bowl, the microswitches are conveyed into the feeding track. After the microswitches are input into the transverse movement assembly from the feeding track, the transverse movement assembly moves the microswitches. At this time, the transverse movement assembly is connected to the detection track, and then the microswitches are pushed onto the detection track through the pushing component and the microswitches are placed at the translation mechanism, thus completing the feeding of the microswitches.

[0026] Optionally, the transverse movement assembly includes: a transverse movement cylinder; a transverse movement push block is arranged at the output end of the transverse movement cylinder; a connection groove is formed on the transverse movement push block; an infrared detector is arranged on one side of the connection groove; when the infrared detector detects that there is a microswitch in the connection groove, the transverse movement cylinder pushes the transverse movement push block to connect the connection groove with the detection track.

[0027] After the vibrating bowl conveys the microswitches onto the feeding track, the microswitches are conveyed along the feeding track and enter the connection groove on the transverse movement push block. The infrared detector detects that there is a microswitch in the connection groove and sends information to the PLC controller. The PLC controller controls the transverse movement cylinder to push the transverse movement push block to move, so that the transverse movement push block moves to the detection track and the connection groove is connected with the detection track. Then, the microswitches are pushed into the detection track through the pushing component and are pushed to the corresponding working position of the translation mechanism.

[0028] Optionally, the pushing component includes: a pushing cylinder; a pushing block is arranged at the output end of the pushing cylinder.

[0029] By pushing the pushing block to move through the pushing cylinder, the microswitches in the connection groove are pushed into the detection track.

[0030] In summary, the utility model has the following beneficial effects:

[0031] The positioning mechanism ensures that the position of the microswitch is constant when the pressing mechanism presses the microswitch; the pressing mechanism presses the microswitch and detects the performance of the microswitch such as pre-pressing the switch, pressing force, pressing stroke and whether the resistance is conductive, and the detection data is sent to the PLC controller; the screening mechanism screens and classifies the microswitches, so that the defective finished products can be screened out and prevent the defective finished products from flowing into the market. Description of the Drawings

[0032] Figure 1 is the overall structural schematic diagram of the utility model;

[0033] Figure 2 is the structural schematic diagram of the positioning mechanism in the utility model;

[0034] Figure 3 is the structural schematic diagram of the translation mechanism in the utility model;

[0035] Figure 4 is a schematic structural view of the middle pressing mechanism of the present utility model;

[0036] Figure 5 is a schematic structural view of the middle screening mechanism of the present utility model;

[0037] Figure 6 is a schematic structural view of the upper feeding mechanism of the present utility model.

[0038] In the figure: 1, detection track; 2, positioning mechanism; 21, positioning cylinder; 22, positioning push plate; 23, positioning rod; 3, translation mechanism; 31, horizontal push cylinder; 32, translation push plate; 33, translation cylinder; 34, longitudinal translation push plate; 35, insertion rod; 4, pressing mechanism; 41, mounting bracket; 42, first pressing assembly; 421, pressing motor; 422, rocker arm; 423, connecting rod; 424, first pressing head; 43, second pressing assembly; 431, pressing cylinder; 432, second pressing head; 44, third pressing assembly; 441, electric slide table; 442, third pressing head; 5, screening mechanism; 51, rotary cylinder; 52, blocking piece; 53, three-way pipe; 6, PLC controller; 7, upper feeding mechanism; 71, upper feeding track; 72, vibrating plate; 73, transverse movement assembly; 731, transverse movement cylinder; 732, transverse movement push block; 74, pushing material assembly; 741, pushing material cylinder; 742, pushing material block; 8, brake block; 9, first electrical measuring conductor; 10, second electrical measuring conductor; 11, good product box; 12, defective product box; 13, infrared detector. Detailed implementation manners

[0039] In order to make the objectives, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present utility model with reference to the accompanying drawings. Several embodiments of the present utility model are given in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0040] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0041] The present utility model will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] Embodiment 1

[0043] This embodiment provides a testing machine for a microswitch, as Figures 1-5 shown, including: a detection track 1; a positioning mechanism 2 is arranged on one side of the detection track 1; a plurality of positioning holes corresponding and adapted to the positioning mechanism 2 are arranged on the detection track 1; the positioning mechanism 2 is slidably connected with the positioning holes; a translation mechanism 3 is arranged on the other side of the detection track 1; a chute corresponding and adapted to the translation mechanism 3 is arranged on the detection track 1; the translation mechanism 3 is slidably connected with the chute; a pressing mechanism 4 is arranged above the detection track 1; a screening mechanism 5 is arranged at the end of the detection track 1.

[0044] When testing the microswitch, the microswitch is placed on the detection track 1; first, the microswitch is moved to the lower part of the pressing mechanism 4 by the translation mechanism 3, and the position of the microswitch is fixed by the positioning mechanism 2 to ensure that the position of the microswitch is constant when the pressing mechanism 4 presses the microswitch. The pressing mechanism 4 presses the microswitch, and performances such as pre-pressing the switch, pressing force, pressing stroke, and whether the resistance is conducting of the microswitch are detected, and the detection data is sent to the PLC controller 6. Then, the translation mechanism 3 moves the microswitch to the screening mechanism 5, and the PLC controller 6 controls the screening mechanism 5 to screen and classify the microswitch, so that unqualified defective products can be screened out to prevent defective products from flowing into the market. Among them, the positioning mechanism 2, the translation mechanism 3, the pressing mechanism 4, and the screening mechanism 5 are all electrically connected to the PLC controller 6.

[0045] Optionally, the positioning mechanism 2 includes: a positioning cylinder 21; a positioning push plate 22 is arranged at the output end of the positioning cylinder 21; a plurality of positioning rods 23 corresponding and adapted to the plurality of positioning holes are arranged on the positioning push plate 22; the plurality of positioning rods 23 are slidably connected with the plurality of positioning holes.

[0046] Specifically, a plurality of brake blocks 8 are arranged on the detection track 1, and each position where a brake block 8 is located is used as a working station. After the translation mechanism 3 moves the microswitch to the position of the brake block 8, the translation mechanism 3 stops moving, and the brake block 8 stops the microswitch from moving. The positioning cylinder 21 drives the positioning push plate 22 to move forward, and the positioning rod 23 is inserted into the positioning hole. At this time, the positioning rod 23 is inserted into the corresponding through hole on the microswitch, and the position of the microswitch can be fixed. After the microswitch completes the test at the corresponding working station, the positioning cylinder 21 drives the positioning push plate 22 to retract, the positioning rod 23 disengages from the through hole on the microswitch, and the translation mechanism 3 moves the microswitch to the next working station.

[0047] Optionally, the translation mechanism 3 includes: a horizontal push cylinder 31; a translation push plate 32 is provided at the output end of the horizontal push cylinder 31; a translation cylinder 33 is provided on the translation push plate 32; a longitudinal movement push plate 34 is provided at the output end of the translation cylinder 33; a plurality of insertion rods 35 are provided on the longitudinal movement push plate 34; the plurality of insertion rods 35 are slidably connected to the chute.

[0048] When it is necessary to move the micro switch, first, the longitudinal movement push plate 34 is pushed by the translation cylinder 33, so that the insertion rods 35 on the longitudinal movement push plate 34 pass through the chute and are inserted into the through holes on the micro switch. Subsequently, the translation push plate 32 is pushed by the horizontal push cylinder 31 to move. After the micro switch moves to the next working station, the horizontal push cylinder 31 stops moving, and the translation cylinder 33 drives the longitudinal movement push plate 34 to retract, and the insertion rods 35 are separated from the through holes of the micro switch.

[0049] Optionally, the pressing mechanism 4 includes: a mounting frame 41; a first pressing component 42, a second pressing component 43, and a third pressing component 44 are sequentially arranged on the mounting frame 41 along the detection track 1; a first electrical measurement conductor 9 is provided on the positioning push plate 22 and directly below the second pressing component 43; a second electrical measurement conductor 10 is provided on the positioning push plate 22 and directly below the third pressing component 44.

[0050] Specifically, the first pressing component 42 is used to pre-press the micro switch to complete the running-in of the components inside the micro switch. The second pressing component 43 is used to test whether the resistance of the micro switch is conductive when pressed. The third pressing component 44 is used to test the pressing force and pressing stroke of the micro switch.

[0051] After the translation mechanism 3 moves the micro switch to the working station corresponding to the first pressing component 42, the first pressing component 42 pre-presses the micro switch to complete the running-in of the components inside the micro switch.

[0052] After the translation mechanism 3 moves the micro switch to the working station corresponding to the second pressing component 43, the positioning mechanism 2 fixes the micro switch. At this time, the first electrical measurement conductor 9 on the positioning push plate 22 contacts each pin of the micro switch and powers on the micro switch. When the second pressing component 43 presses the micro switch, the electrical signal generated by the micro switch is transmitted to the PLC controller 6, and the PLC controller 6 can obtain whether the resistance of the micro switch is conductive according to the electrical signal.

[0053] After the translation mechanism 3 moves the micro switch to the station corresponding to the third pressing component 44, the positioning mechanism 2 fixes the micro switch. At this time, the second electrical measurement conductor 10 on the positioning push plate 22 contacts each pin of the micro switch and powers on the micro switch. When the third pressing component 44 presses the micro switch, the pressing stroke and pressing force of the third pressing component 44 are obtained according to the conduction condition of the micro switch, and thus the pressing force and pressing stroke of the micro switch can be determined.

[0054] Optionally, the first pressing component 42 includes: a pressing motor 421; the pressing motor 421 is arranged on the mounting frame 41; a rocker arm 422 is arranged at the output end of the pressing motor 421; a connecting rod 423 is rotatably connected to the end of the rocker arm 422; a first pressing head 424 is rotatably connected to the end of the connecting rod 423 away from the rocker arm 422; a guide rail is arranged on the mounting frame 41; the first pressing head 424 is slidably connected to the guide rail.

[0055] When running in the micro switch, the pressing motor 421 is started, the rocker arm 422 is driven to rotate by the pressing motor 421, the connecting rod 423 swings under the action of the rocker arm 422, and the first pressing head 424 is pushed to reciprocate up and down along the guide rail, so as to pre-press the micro switch and ensure the completion of the running-in of the micro switch.

[0056] Optionally, the second pressing component 43 includes: a pressing cylinder 431; the pressing cylinder 431 is arranged on the mounting frame 41; a second pressing head 432 is arranged at the output end of the pressing cylinder 431.

[0057] When testing the contact resistance of the micro switch, the second pressing head 432 is driven to descend by the pressing cylinder 431, and the micro switch is pressed by the second pressing head 432. At this time, the contact resistance of the micro switch is obtained through the first electrical measurement conductor 9 to judge whether the resistance is conducted when the micro switch is in contact.

[0058] Optionally, the third pressing component 44 includes: an electric slide table 441; the electric slide table 441 is arranged on the mounting frame 41; a third pressing head 442 is arranged at the output end of the electric slide table 441.

[0059] A pressure sensor is arranged on the third pressing head 442. When testing the pressing stroke and pressing force of the micro switch, the third pressing head 442 is driven to move down by the electric slide table 441, and the pressing force applied by the electric slide table 441 to the third pressing head 442 at the moment when the micro switch is conducted and the pressing stroke of the third pressing head 442 from contacting the micro switch to the micro switch being conducted are detected.

[0060] In this embodiment, four groups of brake blocks 8 are provided. The micro switch has three through holes. Three groups of positioning rods 23 are provided, corresponding to the first pressing assembly 42, the second pressing assembly 43 and the third pressing assembly 44 respectively. Each group has two positioning rods 23, which are respectively inserted into the left and right through holes of the micro switch. Four groups of insertion rods 35 are provided. In addition to corresponding to the first pressing assembly 42, the second pressing assembly 43 and the third pressing assembly 44, there is still one group left for receiving the micro switch to be tested at the first brake block 8. Each group is provided with two insertion rods 35, which are respectively inserted into the left and right through holes of the micro switch. When the four groups of insertion rods 35 move the micro switch, the micro switch to be tested can be conveyed to the first pressing assembly 42 with only one movement, the micro switch that has completed the test of the first pressing assembly 42 can be moved to the second pressing assembly 43, the micro switch that has completed the test of the second pressing assembly 43 can be moved to the third pressing assembly 44, and the micro switch that has completed the test of the third pressing assembly 44 can be moved to the screening mechanism 5.

[0061] Optionally, the screening mechanism 5 includes: a rotary cylinder 51; a blocking piece 52 is arranged at the output end of the rotary cylinder 51; a three-way pipe 53 is arranged at the end of the detection track 1; the inlet of the three-way pipe 53 is communicated with the detection track 1; a good product box 11 is arranged at the first outlet of the three-way pipe 53; a defective product box 12 is arranged at the second outlet of the three-way pipe 53; the blocking piece 52 is arranged at the connection of the inlet, the first outlet and the second outlet of the three-way pipe 53.

[0062] After the micro switch passes the tests of the first pressing assembly 42, the second pressing assembly 43 and the third pressing assembly 44, the PLC controller 6 can output whether the micro switch is qualified according to the test results. If it is qualified, the PLC controller 6 controls the rotary cylinder 51 to rotate the blocking piece 52 to connect the inlet and the first outlet of the three-way pipe 53. At this time, the micro switch enters from the inlet of the three-way pipe 53 and drops into the good product box 11 from the first outlet. If it is unqualified, the PLC controller 6 controls the rotary cylinder 51 to rotate the blocking piece 52 to connect the inlet and the second outlet of the three-way pipe 53. At this time, the micro switch enters from the inlet of the three-way pipe 53 and drops into the defective product box 12 from the second outlet. Thus, the screening and classification of the micro switch can be completed.

[0063] Embodiment Two

[0064] This embodiment provides a testing machine for micro switches, as Figures 1-6As shown in the figure, it includes: a detection track 1; a positioning mechanism 2 is arranged on one side of the detection track 1; a number of positioning holes corresponding to and adapted to the positioning mechanism 2 are arranged on the detection track 1; the positioning mechanism 2 is slidably connected to the positioning holes; a translation mechanism 3 is arranged on the other side of the detection track 1; a chute corresponding to and adapted to the translation mechanism 3 is arranged on the detection track 1; the translation mechanism 3 is slidably connected to the chute; a pressing mechanism 4 is arranged above the detection track 1; a screening mechanism 5 is arranged at the end of the detection track 1.

[0065] When testing the micro switch, place the micro switch on the detection track 1; first, move the micro switch to the lower part of the pressing mechanism 4 through the translation mechanism 3, and fix the position of the micro switch through the positioning mechanism 2 to ensure that the position of the micro switch is constant when the pressing mechanism 4 presses the micro switch. Press the micro switch through the pressing mechanism 4, and detect the performance of the micro switch such as pre-pressure switch, pressing force, pressing stroke, and whether the resistance is conducting. The detection data is sent to the PLC controller 6. Then, the translation mechanism 3 moves the micro switch to the screening mechanism 5, and the PLC controller 6 controls the screening mechanism 5 to screen and classify the micro switch, so that the unqualified defective products can be screened out and prevent the defective products from flowing into the market. Among them, the positioning mechanism 2, the translation mechanism 3, the pressing mechanism 4, and the screening mechanism 5 are all electrically connected to the PLC controller 6.

[0066] Optionally, the positioning mechanism 2 includes: a positioning cylinder 21; a positioning push plate 22 is arranged at the output end of the positioning cylinder 21; a number of positioning rods 23 corresponding to and adapted to a number of positioning holes are arranged on the positioning push plate 22; the number of positioning rods 23 is slidably connected to the number of positioning holes.

[0067] Specifically, a number of brake blocks 8 are arranged on the detection track 1, and each position where the brake block 8 is located is used as a working station. After the translation mechanism 3 moves the micro switch to the position of the brake block 8, the translation mechanism 3 stops moving, and the brake block 8 makes the micro switch stop moving. The positioning cylinder 21 drives the positioning push plate 22 to move forward, and makes the positioning rod 23 insert into the positioning hole. At this time, the positioning rod 23 inserts into the corresponding through hole on the micro switch, and the position of the micro switch can be fixed. After the micro switch completes the test at the corresponding working station, the positioning cylinder 21 drives the positioning push plate 22 to retract, the positioning rod 23 disengages from the through hole on the micro switch, and the translation mechanism 3 moves the micro switch to the next working station.

[0068] Optionally, the translation mechanism 3 includes: a horizontal push cylinder 31; a translation push plate 32 is arranged at the output end of the horizontal push cylinder 31; a translation cylinder 33 is arranged on the translation push plate 32; a longitudinal movement push plate 34 is arranged at the output end of the translation cylinder 33; a number of insertion rods 35 are arranged on the longitudinal movement push plate 34; the number of insertion rods 35 is slidably connected to the chute.

[0069] When it is necessary to move the micro switch, first push the longitudinal moving push plate 34 through the translation cylinder 33, so that the insertion rod 35 on the longitudinal moving push plate 34 passes through the chute and then into the through hole on the micro switch. Subsequently, push the translation push plate 32 to move through the transverse push cylinder 31. After the micro switch moves to the next working station, the transverse push cylinder 31 stops moving, the translation cylinder 33 drives the longitudinal moving push plate 34 to retract, and the insertion rod 35 is disengaged from the through hole of the micro switch.

[0070] Optionally, the pressing mechanism 4 includes: a mounting frame 41; a first pressing assembly 42, a second pressing assembly 43 and a third pressing assembly 44 are sequentially arranged on the mounting frame 41 along the detection track 1; a first electrical measurement conductor 9 is arranged on the positioning push plate 22 and directly below the second pressing assembly 43; a second electrical measurement conductor 10 is arranged on the positioning push plate 22 and directly below the third pressing assembly 44.

[0071] Specifically, the first pressing assembly 42 is used to pre-press the micro switch to complete the running-in of the components inside the micro switch. The second pressing assembly 43 is used to test whether the resistance of the micro switch is conducting when pressed. The third pressing assembly 44 is used to test the pressing force and pressing stroke of the micro switch.

[0072] After the translation mechanism 3 moves the micro switch to the working station corresponding to the first pressing assembly 42, the first pressing assembly 42 pre-presses the micro switch to complete the running-in of the components inside the micro switch.

[0073] After the translation mechanism 3 moves the micro switch to the working station corresponding to the second pressing assembly 43, the positioning mechanism 2 fixes the micro switch. At this time, the first electrical measurement conductor 9 on the positioning push plate 22 contacts each pin of the micro switch and powers on the micro switch. When the second pressing assembly 43 presses the micro switch, the electrical signal generated by the micro switch is transmitted to the PLC controller 6, and the PLC controller 6 can obtain whether the resistance of the micro switch is conducting according to the electrical signal.

[0074] After the translation mechanism 3 moves the micro switch to the working station corresponding to the third pressing assembly 44, the positioning mechanism 2 fixes the micro switch. At this time, the second electrical measurement conductor 10 on the positioning push plate 22 contacts each pin of the micro switch and powers on the micro switch. When the third pressing assembly 44 presses the micro switch, the pressing stroke and pressing force of the third pressing assembly 44 are obtained according to the conduction condition of the micro switch, and then the pressing force and pressing stroke of the micro switch can be determined.

[0075] Optionally, the first pressing assembly 42 includes: a pressing motor 421; the pressing motor 421 is arranged on the mounting bracket 41; a rocker arm 422 is arranged at the output end of the pressing motor 421; a connecting rod 423 is rotatably connected to the end of the rocker arm 422; a first pressing head 424 is rotatably connected to the end of the connecting rod 423 away from the rocker arm 422; a guide rail is arranged on the mounting bracket 41; the first pressing head 424 is slidably connected to the guide rail.

[0076] When running in the micro switch, start the pressing motor 421, drive the rocker arm 422 to rotate through the pressing motor 421, the connecting rod 423 swings under the action of the rocker arm 422, and push the first pressing head 424 to reciprocate up and down along the guide rail, so as to pre-press the micro switch and ensure that the running-in of the micro switch is completed.

[0077] Optionally, the second pressing assembly 43 includes: a pressing cylinder 431; the pressing cylinder 431 is arranged on the mounting bracket 41; a second pressing head 432 is arranged at the output end of the pressing cylinder 431.

[0078] When testing the contact resistance of the micro switch, drive the second pressing head 432 to descend through the pressing cylinder 431, press the micro switch through the second pressing head 432, and at this time, obtain the contact resistance of the micro switch through the first electrical measurement conductor 9 to judge whether the resistance is conductive when the micro switch is in contact.

[0079] Optionally, the third pressing assembly 44 includes: an electric slide table 441; the electric slide table 441 is arranged on the mounting bracket 41; a third pressing head 442 is arranged at the output end of the electric slide table 441.

[0080] A pressure sensor is arranged on the third pressing head 442. When testing the pressing stroke and pressing force of the micro switch, drive the third pressing head 442 to move down through the electric slide table 441, and detect the pressing force applied by the electric slide table 441 to the third pressing head 442 at the moment when the micro switch is turned on and the pressing stroke of the third pressing head 442 from contacting the micro switch to the micro switch being turned on.

[0081] Optionally, the screening mechanism 5 includes: a rotary cylinder 51; a blocking piece 52 is arranged at the output end of the rotary cylinder 51; a tee pipe 53 is arranged at the end of the detection track 1; the inlet of the tee pipe 53 is communicated with the detection track 1; a good product box 11 is arranged at the first outlet of the tee pipe 53; a defective product box 12 is arranged at the second outlet of the tee pipe 53; the blocking piece 52 is arranged at the connection of the inlet, the first outlet and the second outlet of the tee pipe 53.

[0082] After the micro switch is tested by the first pressing component 42, the second pressing component 43 and the third pressing component 44, the PLC controller 6 can output whether the micro switch is qualified according to the test results. If it is qualified, the PLC controller 6 controls the rotary cylinder 51 to rotate the blocking piece 52, so that the inlet of the three-way pipe 53 is communicated with the first outlet. At this time, the micro switch enters from the inlet of the three-way pipe 53 and drops into the good product box 11 from the first outlet. If it is unqualified, the PLC controller 6 controls the rotary cylinder 51 to rotate the blocking piece 52, so that the inlet of the three-way pipe 53 is communicated with the second outlet. At this time, the micro switch enters from the inlet of the three-way pipe 53 and drops into the defective product box 12 from the second outlet. Thus, the screening and classification of the micro switch can be completed.

[0083] Optionally, it further includes a feeding mechanism 7, and the feeding mechanism 7 includes: a feeding track 71; a vibrating disk 72 is arranged at one end of the feeding track 71; a transverse moving component 73 is arranged at the other end of the feeding track 71; a pushing component 74 is arranged on one side of the feeding track 71; when the transverse moving component 73 receives the micro switch conveyed by the feeding track 71, the transverse moving component 73 moves the micro switch and communicates with the detection track 1, and the pushing component 74 pushes the micro switch to the translation mechanism 3.

[0084] There are several micro switches to be tested in the vibrating disk 72. The micro switches are conveyed into the feeding track 71 by vibrating the vibrating disk 72. After the micro switch is input into the transverse moving component 73 from the feeding track 71, the transverse moving component 73 moves the micro switch. At this time, the transverse moving component 73 is communicated with the detection track 1, and then the pushing component 74 pushes the micro switch onto the detection track 1 and makes the micro switch be at the translation mechanism 3, so that the feeding of the micro switch can be completed.

[0085] Optionally, the transverse moving component 73 includes: a transverse moving cylinder 731; a transverse moving push block 732 is arranged at the output end of the transverse moving cylinder 731; a connecting groove is opened on the transverse moving push block 732; an infrared detector 13 is arranged on one side of the connecting groove; when the infrared detector 13 detects that there is a micro switch in the connecting groove, the transverse moving cylinder 731 pushes the transverse moving push block 732 to communicate the connecting groove with the detection track 1.

[0086] After the vibrating disk 72 conveys the micro switch onto the feeding track 71, the micro switch is conveyed along the feeding track 71 and enters the connecting groove on the transverse moving push block 732. The infrared detector 13 detects that there is a micro switch in the connecting groove and sends information to the PLC controller 6. The PLC controller 6 controls the transverse moving cylinder 731 to push the transverse moving push block 732 to move, so that the transverse moving push block 732 moves to the detection track 1 and makes the connecting groove communicate with the detection track 1. Then, the pushing component 74 pushes the micro switch onto the detection track 1 and pushes the micro switch to the working position corresponding to the translation mechanism 3.

[0087] Optionally, the pushing component 74 includes: a pushing air cylinder 741; a pushing block 742 is arranged at the output end of the pushing air cylinder 741.

[0088] The pushing block 742 is pushed to move by the pushing air cylinder 741, and the microswitch in the connecting groove is pushed into the detection track 1.

[0089] In this embodiment, there are four groups of brake blocks 8, there are three through holes on the microswitch, and there are three groups of positioning rods 23, which respectively correspond to the first pressing component 42, the second pressing component 43 and the third pressing component 44. Each group has two positioning rods 23, which are respectively inserted into the left and right through holes of the microswitch. There are four groups of inserting rods 35. In addition to corresponding to the first pressing component 42, the second pressing component 43 and the third pressing component 44, there is also a spare group for receiving the microswitch conveyed by the pushing air cylinder 741 at the first brake block 8. Each group is provided with two inserting rods 35, which are respectively inserted into the left and right through holes of the microswitch. When the four groups of inserting rods 35 move the microswitch, it only needs to move once to complete the conveyance of the microswitch to be tested to the first pressing component 42, move the microswitch that has completed the test of the first pressing component 42 to the second pressing component 43, move the microswitch that has completed the test of the second pressing component 43 to the third pressing component 44, and move the microswitch that has completed the test of the third pressing component 44 to the screening mechanism 5.

[0090] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A testing machine for a micro switch, characterized in that, Including: A detection track; a positioning mechanism is arranged on one side of the detection track; a plurality of positioning holes corresponding and adapted to the positioning mechanism are arranged on the detection track; the positioning mechanism is slidably connected with the positioning holes; a translation mechanism is arranged on the other side of the detection track; a chute corresponding and adapted to the translation mechanism is arranged on the detection track; the translation mechanism is slidably connected with the chute; a pressing mechanism is arranged above the detection track; a screening mechanism is arranged at the end of the detection track.

2. The testing machine for a microswitch according to claim 1, characterized in that, The positioning mechanism includes: a positioning cylinder; a positioning push plate is arranged at the output end of the positioning cylinder; a plurality of positioning rods corresponding and adapted to the plurality of positioning holes are arranged on the positioning push plate; the plurality of positioning rods are slidably connected with the plurality of positioning holes.

3. The testing machine for a micro switch according to claim 2, wherein, The translation mechanism includes: a horizontal push cylinder; a translation push plate is arranged at the output end of the horizontal push cylinder; a translation cylinder is arranged on the translation push plate; a longitudinal movement push plate is arranged at the output end of the translation cylinder; a plurality of insertion rods are arranged on the longitudinal movement push plate; the plurality of insertion rods are slidably connected with the chute.

4. The testing machine for a microswitch according to claim 2, characterized in that, The pressing mechanism includes: a mounting frame; a first pressing component, a second pressing component and a third pressing component are sequentially arranged on the mounting frame along the detection track; a first electrical measurement conductor is arranged on the positioning push plate and directly below the second pressing component; a second electrical measurement conductor is arranged on the positioning push plate and directly below the third pressing component.

5. The testing machine for a microswitch according to claim 4, characterized in that, The first pressing component includes: a pressing motor; the pressing motor is arranged on the mounting frame; a rocker arm is arranged at the output end of the pressing motor; a connecting rod is rotatably connected to the end of the rocker arm; a first pressing head is rotatably connected to the end of the connecting rod away from the rocker arm; a guide rail is arranged on the mounting frame; the first pressing head is slidably connected with the guide rail.

6. The testing machine for a microswitch according to claim 4, wherein, The second pressing component includes: a pressing cylinder; the pressing cylinder is arranged on the mounting frame; a second pressing head is arranged at the output end of the pressing cylinder.

7. A testing machine for a microswitch according to claim 4, characterized in that, The third pressing component includes: an electric slide table; the electric slide table is arranged on the mounting frame; a third pressing head is arranged at the output end of the electric slide table.

8. A testing machine for a micro switch according to claim 1, characterized in that, The screening mechanism includes: a rotary cylinder; a blocking piece is arranged at the output end of the rotary cylinder; a three-way pipe is arranged at the end of the detection track; the inlet of the three-way pipe is communicated with the detection track; a good product box is arranged at the first outlet of the three-way pipe; a defective product box is arranged at the second outlet of the three-way pipe; the blocking piece is arranged at the connection of the inlet, the first outlet and the second outlet of the three-way pipe.

9. A testing machine for a micro switch according to claim 1, characterized in that, It further includes a feeding mechanism, and the feeding mechanism includes: a feeding track; a vibrating disk is arranged at one end of the feeding track; a transverse movement component is arranged at the other end of the feeding track; a pushing component is arranged on one side of the feeding track; when the transverse movement component receives the micro switch conveyed by the feeding track, the transverse movement component moves the micro switch and communicates with the detection track, and the pushing component pushes the micro switch to the translation mechanism.

10. A testing machine for a microswitch according to claim 9, characterized in that, The transverse movement assembly includes: a transverse movement cylinder; a transverse movement push block is arranged at the output end of the transverse movement cylinder; a connection groove is formed in the transverse movement push block; an infrared detector is arranged on one side of the connection groove; when the infrared detector detects that a micro switch is in the connection groove, the transverse movement cylinder pushes the transverse movement push block to connect the connection groove with the detection track.

Images