A safety switch testing machine

Abstract

This utility model discloses a safety switch testing machine, comprising: a first bracket and a second bracket fixedly connected to a base plate; a clamping device fixedly connected to the first bracket for clamping the safety switch; multiple detection probes mounted on a probe mounting base, wherein each detection probe corresponds one-to-one with a multiple contact on the safety switch clamped by the clamping device; a first driving device fixedly connected to the second bracket and drivingly connected to the probe mounting base for driving the probe mounting base to move the multiple detection probes, causing the multiple detection probes to contact or separate from the multiple contacts; and a control device electrically connected to the clamping device, the multiple detection probes, and the first driving device. Using the above technical solution, automated testing can be achieved, significantly improving the testing efficiency of safety switches compared to manual testing using a multimeter, and providing more accurate testing results.

Description

Technical Field

[0001] The utility model relates to the technical field related to safety switch testing, in particular to a safety switch testing machine. Background Art

[0002] At present, the detection of safety switches is: manually using a multimeter to determine the on-off status of each contact and manually inserting and removing the key insert that matches the safety switch to determine the locking status. This detection method is inefficient, and the detection relies on manual evaluation, which has certain deviations. Utility Model Content

[0003] In order to overcome the existing technical defects and solve the technical problem that the existing safety switch uses a manual method to detect the on-off status of each contact, resulting in low detection efficiency, the purpose of the utility model is to provide a safety switch testing machine to solve the above technical problems.

[0004] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0005] According to one aspect of the utility model, a safety switch testing machine is designed, comprising:

[0006] A bottom plate, fixedly connected with a first bracket and a second bracket;

[0007] A clamping device, fixedly connected to the first bracket, used for clamping the safety switch;

[0008] A plurality of detection probes are mounted on the probe mounting seat, and the plurality of detection probes correspond one to one with the plurality of contacts on the safety switch clamped by the clamping device;

[0009] A first driving device is fixedly connected to the second bracket and is drivingly connected to the probe mounting seat, and is used to drive the probe mounting seat to drive the plurality of detection probes to move, so that the plurality of detection probes are in contact with or separated from the plurality of contact points;

[0010] The control device is electrically connected to the clamping device, the plurality of detection probes and the first driving device.

[0011] By adopting the above technical scheme, when it is necessary to detect the contacts on the safety switch, the safety switch is clamped by the clamping device, and the control device controls the first driving device to drive the probe mounting seat to drive multiple detection probes to move in the direction of the safety switch, and make the multiple detection probes contact with the multiple contacts on the safety switch one by one. Since the multiple detection probes are electrically connected to the control device, the control device determines the on-off status of each contact on the safety switch, and then the safety switch is powered on, and the power-on status of each contact on the safety switch is determined by the control device, thereby realizing the detection of the contacts on the safety switch. After the detection is completed, the control device controls the first driving device to drive the detection probe to reset, and then removes the clamped safety switch and continues to detect the next switch, thereby realizing automatic detection. Compared with manual detection using a multimeter, the detection efficiency of the safety switch is greatly improved, and the detection is more accurate.

[0012] In order to better solve the above technical defects, the utility model also has a better technical solution:

[0013] In some embodiments, it further comprises:

[0014] A key insert is mounted on the insert mounting seat, and the key insert corresponds to the socket on the safety switch clamped by the clamping device;

[0015] The second driving device is fixedly connected to the base plate and is drivingly connected to the insert mounting seat to drive the insert mounting seat to drive the key insert to move so that the insertion end of the key insert is inserted into the socket or separated from the socket. The second driving device is electrically connected to the control device.

[0016] Therefore, the insertion and removal detection between the key insert and the safety switch can be performed through the second driving device, and the detection is performed automatically. Compared with the manual insertion and removal detection, the detection efficiency is higher.

[0017] In some embodiments, a positioning plate fixed to the first bracket is provided below the clamping device, and a positioning groove for locating the position of the safety switch is provided on the positioning plate. When the safety switch needs to be tested, its lower end is placed in the positioning groove and vertically placed on the positioning plate, and the safety switch can be positioned through the positioning groove, and then the safety switch is clamped by the clamping device.

[0018] In some embodiments, the clamping device is a pneumatic finger, and the pneumatic finger is connected to two clamping blocks.

[0019] In some embodiments, the clamping block is in a T-shaped structure, and a stopper is provided on the opposite sides of the lower ends of the two clamping blocks. When the key insert and the safety switch are plugged in and out, the stopper can stop the safety switch to prevent the safety switch from being separated from the clamping device during the plugging and unplugging process.

[0020] In some embodiments, the first driving device is a slide cylinder, the probe mounting seat is fixedly connected to a connecting seat, and the connecting seat is fixedly connected to a driving seat of the first driving device.

[0021] In some embodiments, the first driving device is a linear module, the probe mounting seat is fixedly connected to a connecting seat, and the connecting seat is fixedly connected to a driving seat of the first driving device.

[0022] In some embodiments, the second driving device is fixed to a base, the base is fixed to a bottom plate, the second driving device is a slide cylinder, and the insert mounting seat is fixed to a driving seat of the second driving device.

[0023] In some embodiments, the second driving device is fixed to a base, the base is fixed to a bottom plate, the second driving device is a linear module, and the insert mounting seat is fixed to a driving seat of the second driving device.

[0024] In some embodiments, the control device is a PLC controller, which is installed in a control box. The control box is provided with a display screen, a signal light, and a control button electrically connected to the PLC controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a safety switch testing machine provided by the utility model in one embodiment;

[0026] Figure 2 It is a side view structural diagram of a safety switch testing machine;

[0027] Figure 3 It is a schematic diagram of the structure of the clamping device and the first bracket on the safety switch testing machine;

[0028] Figure 4 It is a schematic diagram of the state in which the clamping device clamps the safety switch;

[0029] Figure 5 It is a schematic diagram of the structure of the detection probe and the probe mounting seat;

[0030] Reference numerals:

[0031] 1. Base plate; 2. Clamping device; 21. Clamping block; 211. Stopper; 3. Detection probe; 31. Probe mounting seat; 311. Electrical wood block; 312. Protective housing; 32. Connecting seat; 4. First driving device; 5. Key insert; 51. Insert mounting seat; 6. Second driving device; 61. Base; 7. First bracket; 71. Positioning plate; 711. Positioning groove; 8. Second bracket; 9. Control box; 91. Display screen; 92. Signal lamp; 93. Control button; 100. Safety switch; 101. Jack; 102. Contact point. Detailed implementation mode

[0032] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific implementation mode and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. involved in the orientation description is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0034] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, and fixing should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0035] Refer to Figures 1 to 5 As shown, a safety switch testing machine provided by the present utility model includes: a base plate 1, a clamping device 2, a detection probe 3, a first driving device 4, a control device, a key insert 5 and a second driving device 6.

[0036] A first bracket 7 and a second bracket 8 are fixedly connected to the base plate 1. The first bracket 7 and the second bracket 8 correspond to each other front and back and both have a U-shaped structure.

[0037] The clamping device 2 is fixedly connected to the first bracket 7, and the clamping device 2 is used to clamp the safety switch 100. Further, the clamping device 2 is a pneumatic finger, and the pneumatic finger is connected to two clamping blocks 21, and the clamping blocks 21 are in a T-shaped structure. The two clamping blocks 21 are respectively provided with stoppers 211 on the opposite sides of the lower ends. The pneumatic finger drives the two clamping blocks 21 to approach each other to clamp the safety switch 100, and when the two clamping blocks 21 are driven away from each other, the safety switch 100 can be released. When the two clamping blocks 21 clamp the safety switch 100, the stoppers 211 on the two clamping blocks 21 are located at the front side of the safety switch 100. The clamping device 2 is electrically connected to the control device.

[0038] A positioning plate 71 fixed to the first bracket 7 is provided below the clamping device 2. A positioning groove 711 for locating the position of the safety switch 100 is provided on the positioning plate 71. When the lower end of the safety switch 100 is placed in the positioning groove 711 and placed vertically, the upper part of the safety switch 100 is located between the two clamping blocks 21.

[0039] There are two or three or four or five or six or more detection probes 3. In this embodiment, six detection probes 3 are preferably provided. The number of detection probes 3 is the same as the number of contacts 102 on the safety switch 100. The six detection probes 3 are all electrically connected to the control device. The six detection probes 3 are installed on the probe mounting seat 31. The probe mounting seat 31 includes a bakelite block 311 and a protective shell 312. The detection probes 3 are connected to the bakelite block 311. The bakelite block 311 and the protective shell 312 are both fixedly connected to the connecting seat 32. When the clamping device 2 clamps the safety switch 100, the six detection probes 3 correspond to the six contacts 102 on the safety switch 100 one by one.

[0040] The first driving device 4 is fixedly connected to the second bracket 8 and is drivingly connected to the probe mounting seat 31, and is used to drive the probe mounting seat 31 to drive the multiple detection probes 3 to move forward and backward, so that the multiple detection probes 3 are in contact with or separated from the multiple contacts 102. The first driving device 4 is a slide cylinder or a linear module. In this embodiment, the first driving device 4 is preferably a slide cylinder, and the connecting seat 32 is fixedly connected to the driving seat of the first driving device 4. The first driving device 4 drives the connecting seat 32 to move, which can link the probe mounting seat 31 to drive the detection probe 3 to move forward and backward. The first driving device 4 is electrically connected to the control device.

[0041] The key insert 5 is fixedly mounted on the insert mounting seat 51 . When the clamping device 2 clamps the safety switch 100 , the key insert 5 corresponds to the insertion hole 101 on the safety switch 100 clamped by the clamping device 2 .

[0042] The second driving device 6 is fixed to the base 61, the base 61 is fixed to the bottom plate 1, the second driving device 6 is drivingly connected to the insert mounting seat 51, so as to drive the insert mounting seat 51 to drive the key insert 5 to move forward and backward, when the clamping device 2 clamps the safety switch 100, the key insert 5 moves so that the insertion end thereof can be inserted into the insertion hole 101 on the safety switch 100 or separated from the insertion hole 101. The second driving device 6 is a slide cylinder or a linear module. In this embodiment, the second driving device 6 is preferably a slide cylinder, the insert mounting seat 51 is fixed to the driving seat of the second driving device 6, and the second driving device 6 is electrically connected to the control device.

[0043] The control device is a PLC controller, which is installed in a control box 9. The control box 9 is fixedly connected to the rear side of the base plate 1. A display screen 91, a signal light 92 and a control button 93 are provided on the control box 9. The display screen 91, the signal light 92 and the control button 93 are all electrically connected to the PLC controller. The control button 93 includes a switch button, an emergency stop button, a start button and a pause button.

[0044] The detection principle of the safety switch tester is as follows: when it is necessary to detect the contacts 102 (the contacts include normally open contacts and normally closed contacts) on the safety switch 100, the lower end of the safety switch 100 is placed in the positioning groove 711 and placed vertically, and then the start button is pressed to start the device, and the control device controls the clamping device 2 to clamp the safety switch 100, and then the control device controls the first drive device 4 to drive the probe mounting seat 31 to drive the multiple detection probes 3 to move toward the safety switch 100, and make the multiple detection probes 3 contact with the multiple contacts 102 on the safety switch 100 one by one. Since the multiple detection probes 3 are electrically connected to the control device, the control device detects and determines the electrical signal status of each contact on the safety switch 100, and determines the power on and off status. The safety switch 100 is then powered on, and then the control device detects and determines the electrical signals of the contacts on the safety switch 100 to determine the power-on and power-off conditions. The power-on and power-off conditions of the contacts will be displayed by the signal light 92, thereby realizing the detection of the contacts on the safety switch 100. Then the second drive device 6 drives the insert mounting seat 51 to drive the key insert 5 to move toward the safety switch 100, so that the insertion end of the key insert 5 is inserted into the socket 101 on the safety switch 100. After insertion, the contact signal on the safety switch 100 will change, and then the second drive device 6 drives the insert mounting seat 51 to move backward to pull out the key insert 5. If the PLC controller is set to be pullable, it can detect whether the pull-out function is normal. If the PLC controller is set to be locked, then under the set locking condition, the key insert 5 cannot be pulled out. When the time is reached, the second drive device 6 drives the insert mounting seat 51 to move and pull out the key insert 5. If the key insert 5 can be pulled out, it is determined that the switch locking function is normal. If it cannot be pulled out, it is determined that the switch locking function is abnormal. After the detection is completed, the control device controls the first drive device 4 to drive the detection probe 3 to reset, the second drive device 6 to drive the key insert 5 to reset, and the clamping device 2 to release the safety switch 100, and then removes the released clamped safety switch 100, and continues to detect the next safety switch 100.

[0045] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A safety switch testing machine, characterized in that: include: A bottom plate, fixedly connected with a first bracket and a second bracket; A clamping device, fixedly connected to the first bracket, used for clamping the safety switch; A plurality of detection probes are mounted on the probe mounting seat, and the plurality of detection probes correspond one to one with the plurality of contacts on the safety switch clamped by the clamping device; A first driving device is fixedly connected to the second bracket and is drivingly connected to the probe mounting seat, and is used to drive the probe mounting seat to drive the plurality of detection probes to move, so that the plurality of detection probes are in contact with or separated from the plurality of contact points; The control device is electrically connected to the clamping device, the plurality of detection probes and the first driving device.

2. A safety switch testing machine according to claim 1, characterized in that: Also includes: A key insert is mounted on the insert mounting seat, and the key insert corresponds to the socket on the safety switch clamped by the clamping device; The second driving device is fixedly connected to the base plate and is drivingly connected to the insert mounting seat to drive the insert mounting seat to drive the key insert to move so that the insertion end of the key insert is inserted into the socket or separated from the socket. The second driving device is electrically connected to the control device.

3. A safety switch testing machine according to claim 1 or 2, characterized in that: A positioning plate fixedly connected to the first bracket is arranged below the clamping device, and a positioning groove for locating the position of the safety switch is arranged on the positioning plate.

4. A safety switch testing machine according to claim 1, characterized in that: The clamping device is a pneumatic finger, and the pneumatic finger is connected to two clamping blocks.

5. A safety switch testing machine according to claim 4, characterized in that: The clamping blocks are in a T-shaped structure, and stoppers are respectively arranged on opposite sides of the lower ends of the two clamping blocks.

6. A safety switch testing machine according to claim 1, characterized in that: The first driving device is a slide cylinder, the probe mounting seat is fixedly connected to the connecting seat, and the connecting seat is fixedly connected to the driving seat of the first driving device.

7. A safety switch testing machine according to claim 1, characterized in that: The first driving device is a linear module, the probe mounting seat is fixedly connected to the connecting seat, and the connecting seat is fixedly connected to the driving seat of the first driving device.

8. A safety switch testing machine according to claim 2, characterized in that: The second driving device is fixed on a base, the base is fixed to the bottom plate, the second driving device is a slide cylinder, and the insert mounting seat is fixed on the driving seat of the second driving device.

9. A safety switch testing machine according to claim 2, characterized in that: The second driving device is fixedly connected to the base, the base is fixedly connected to the bottom plate, the second driving device is a linear module, and the insert mounting seat is fixedly connected to the driving seat of the second driving device.

10. A safety switch testing machine according to claim 1, characterized in that: The control device is a PLC controller, which is installed in a control box. The control box is provided with a display screen, a signal light and a control button which are electrically connected to the PLC controller.

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