Safety switch testing device

Abstract

The utility model discloses a safety switch testing device. A bottom plate is fixedly connected with a first n-shaped frame and a second n-shaped frame; the clamping device is fixedly connected to the first n-shaped frame, and the two driving ends of the clamping device are connected with clamping blocks correspondingly. A positioning groove is formed in the top of the front end of the positioning plate; the probe assembly is installed on the insulating block, and the probe assembly corresponds to a gap between the two clamping blocks in a front-and-back mode. The driving device is fixedly connected to the second n-shaped frame, is in driving connection with the insulating block and is used for driving the insulating block to drive the probe assembly to move back and forth; the key insertion sheet is mounted on the insertion sheet seat; the servo linear module is in driving connection with the insertion piece base and used for driving the insertion piece base to drive the key insertion piece to move front and back. The control device is electrically connected with the clamping device, the probe assembly, the driving device and the servo linear module; by adopting the above technical scheme, compared with the manual detection by using a universal meter, the test of the contact and plugging on the safety switch can be automatically realized, and the test efficiency of the safety switch is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to the test of safety switches, and particularly relates to a safety switch test device. Background Art

[0002] A safety switch is a switch that can prevent people from entering a dangerous area before all safety conditions are met. During the production process of safety switches, it is necessary to test the on-off situation of their contacts and the locking situation to determine whether they are qualified. The existing detection method for safety switches is to use a multimeter and a switching power supply for testing, which is a pure manual test with low test efficiency. Summary of the Utility Model

[0003] In order to overcome the existing technical defects, the purpose of the utility model is to provide a safety switch test device to solve the above technical problems.

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

[0005] According to one aspect of the utility model, a safety switch test device is designed, including:

[0006] A bottom plate, fixedly connected with a first U-shaped frame and a second U-shaped frame;

[0007] A clamping device, fixedly connected to the first U-shaped frame, and two driving ends of the clamping device are respectively connected with clamping blocks for driving the two clamping blocks to approach and move away from each other;

[0008] A positioning plate, arranged below the clamping device and fixedly connected with the first U-shaped frame, and a positioning groove is arranged at the top of the front end of the positioning plate, and the positioning groove corresponds to the gap between the two clamping blocks up and down;

[0009] A probe assembly, composed of a plurality of probes, and installed on an insulating block, and the probe assembly corresponds to the gap between the two clamping blocks front and back;

[0010] A driving device, fixedly connected to the second U-shaped frame, and drivingly connected to the insulating block for driving the insulating block to drive the probe assembly to move back and forth;

[0011] A key insert, installed on an insert seat, and the key insert corresponds to the positioning groove front and back;

[0012] A servo linear module, fixedly connected to the bottom plate, and drivingly connected to the insert seat for driving the insert seat to drive the key insert to move back and forth;

[0013] A control device, electrically connected to the clamping device, the probe assembly, the driving device and the servo linear module.

[0014] With the above technical solution, when the safety switch needs to be detected, the lower end of the safety switch is placed in the positioning groove on the positioning plate. The clamping device drives the two clamping blocks to move and clamp the safety switch. The control device controls the driving device to drive the insulating block to move, driving the probe assembly to move towards the safety switch, so that multiple probes are in one-to-one contact with multiple contacts on the safety switch. Then, the safety switch is powered on. Since the probe assembly is electrically connected to the control device, the control device can test the on-off status of each contact on the safety switch. The servo linear module can drive the key insert to move back and forth. When the key insert moves backward, it can be inserted into the jack of the safety switch to perform plugging and unplugging tests on the safety switch. Compared with manual detection using a multimeter, it can automatically test the contacts and plugging and unplugging on the safety switch, greatly improving the testing efficiency of the safety switch.

[0015] In order to better solve the above technical defects, the present utility model also has a better technical solution:

[0016] In some embodiments, limiting baffles are respectively provided on one side of the lower ends of the two clamping blocks facing each other. When the safety switch is subjected to plugging and unplugging tests, the baffles can prevent the safety switch from detaching from the clamping blocks, ensuring the smooth progress of the test.

[0017] In some embodiments, a first induction sheet is fixedly connected to the left side of the driving seat of the servo linear module. A first groove-shaped photoelectric switch electrically connected to the control device is provided on the left side of the servo linear module. When the servo linear module drives the driving seat to drive the first induction sheet to move, when the first induction sheet is placed in the groove of the first groove-shaped photoelectric switch, the servo linear module stops driving.

[0018] In some embodiments, a second induction sheet is fixedly connected to the left side of the driving seat. A second groove-shaped photoelectric switch electrically connected to the control device is provided on the left side of the servo linear module. When the servo linear module drives the driving seat to drive the second induction sheet to move, when the second induction sheet is placed in the groove of the second groove-shaped photoelectric switch, the servo linear module stops driving.

[0019] In some embodiments, the driving device is a slide cylinder, and a housing covering the insulating block is provided outside the insulating block.

[0020] In some embodiments, the clamping device is a pneumatic finger or an electric gripper.

[0021] In some embodiments, the key insert is fixedly connected to the insert seat by screws. Two rows of threaded holes for adjusting the longitudinal fixed position of the key insert are longitudinally provided on the top of the insert seat.

[0022] In some embodiments, the control device is a PLC controller, and the PLC controller is provided with a display screen, signal lights, and control buttons. Description of the Drawings

[0023] Figure 1 Schematic structural diagram of a safety switch testing device according to an embodiment provided by the present utility model;

[0024] Figure 2 Schematic side view structural diagram of the safety switch testing device;

[0025] Figure 3 Schematic structural diagram of the clamping device and the first U-shaped frame on the safety switch testing device;

[0026] Figure 4 Schematic diagram of the state where the clamping device clamps the safety switch;

[0027] Figure 5 Schematic structural diagram of the probe assembly and the driving device;

[0028] Figure 6 Schematic structural diagram of the servo linear module;

[0029] Reference Signs:

[0030] 1. Base plate; 11. First U-shaped frame; 12. Second U-shaped frame; 2. Clamping device; 21. Clamping block; 211. Limit baffle; 3. Positioning plate; 31. Positioning groove; 4. Probe assembly; 41. Insulating block; 42. Cover; 5. Driving device; 6. Key insert; 61. Insert seat; 62. Threaded hole; 7. Servo linear module; 70. Driving seat; 71. First induction piece; 72. First groove type photoelectric switch; 73. Second induction piece; 74. Second groove type photoelectric switch; 8. Control device; 9. Safety switch. Detailed Embodiment

[0031] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0032] In the description of the present utility model, it should be understood that with regard to the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship 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 thus cannot be construed as a limitation of the present utility model.

[0033] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", "fixed connection", etc. 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.

[0034] Reference Figures 1 to 6 As shown, a safety switch testing device provided by the present utility model includes: a bottom plate 1, a clamping device 2, a positioning plate 3, a probe assembly 4, a driving device 5, a key insert 6, a servo linear module 7, and a control device 8.

[0035] A first U-shaped frame 11 and a second U-shaped frame 12 are fixedly connected to the bottom plate 1, and the first U-shaped frame 11 and the second U-shaped frame 12 are arranged one in front of the other.

[0036] The clamping device 2 is fixedly connected to the first U-shaped frame 11. The clamping device 2 is a pneumatic finger or an electric claw. Two driving ends of the clamping device 2 are respectively connected with clamping blocks 21. The clamping device 2 is used to drive the two clamping blocks 21 to approach each other and move away from each other. The two clamping blocks 21 can clamp the safety switch 9 when approaching each other and can loosen the safety switch 9 when moving away from each other. Limiting baffles 211 are respectively arranged on one side of the lower ends of the two clamping blocks 21 opposite to each other. The clamping device 2 is electrically connected to the control device 8 and is controlled by the control device 8 to act.

[0037] The positioning plate 3 is arranged below the clamping device 2 and is fixedly connected to the first U-shaped frame 11. A positioning groove 31 is arranged at the top of the front end of the positioning plate 3, and the positioning groove 31 corresponds to the gap between the two clamping blocks 21 up and down.

[0038] The probe assembly 4 is composed of multiple probes. The number of probes is three or four or five or six or more. Since this device is used to detect the MA3 type safety switch 9 and the MA3 type safety switch 9 has ten contacts, the number of probes is also ten. The probe assembly 4 is installed on an insulating block 41. The insulating block 41 is a bakelite block or an insulating rubber block. The probe assembly 4 corresponds to the gap between the two clamping blocks 21 in the upper part front and back. Each probe of the probe assembly 4 is electrically connected to the control device 8, and a housing 42 covering the insulating block 41 is arranged on the outside of the insulating block 41.

[0039] The driving device 5 is a slide cylinder. The driving device 5 is fixedly connected to the second U-shaped frame 12 and is drivingly connected to the insulating block 41, and is used to drive the insulating block 41 to drive the probe assembly 4 to move back and forth. The driving device 5 is electrically connected to the control device 8 and is controlled by the control device 8 to act.

[0040] The key insert 6 is fixedly connected to the insert seat 61 through screws. Two rows of threaded holes 62 for adjusting the longitudinal fixed position of the key insert 6 are longitudinally arranged at the top of the insert seat 61. The key insert 6 corresponds to the positioning groove 31 front and back.

[0041] The servo linear module 7 is fixedly connected to the bottom plate 1 and is drivingly connected to the insert seat 61, and is used to drive the insert seat 61 to drive the key insert 6 to move back and forth. The servo linear module 7 is electrically connected to the control device 8 and is controlled by the control device 8 to act.

[0042] A first induction piece 71 is fixedly connected to the left side of the driving seat 70 of the servo linear module 7. A first groove type photoelectric switch 72 electrically connected to the control device 8 is arranged on the left side of the servo linear module 7. When the servo linear module 7 drives the driving seat 70 to drive the first induction piece 71 to move, the clamping device 2 clamps a safety switch 9. When the first induction piece 71 is placed in the groove of the first groove type photoelectric switch 72, the first groove type photoelectric switch 72 feeds back information to the control device 8 to control the servo linear module 7 to stop driving. At this time, the key insert 6 is inserted into the socket on the safety switch 9. A second induction piece 73 is fixedly connected to the left side of the driving seat 70. A second groove type photoelectric switch 74 electrically connected to the control device 8 is arranged on the left side of the servo linear module 7. When the servo linear module 7 drives the driving seat 70 to drive the second induction piece 73 to move, when the second induction piece 73 is placed in the groove of the second groove type photoelectric switch 74, the servo linear module 7 stops driving, which is used to control the forward movement distance of the insert seat 61.

[0043] The control device 8 is a PLC controller. The PLC controller is provided with a display screen, signal lights and control buttons. The control buttons include a switch button, an emergency stop button, a start button and a pause button. The signal lights are three-color lights, and the three colors respectively represent three states of OK, NG and alarm.

[0044] The principle of the safety switch testing device is as follows: when it is necessary to detect the contacts (the contacts include normally open contacts and normally closed contacts) on the safety switch 9, place the lower end of the safety switch 9 in the positioning groove 31 and place it vertically, and then drive the two clamping blocks 21 by the clamping device 2 to clamp the safety switch 9. Then, the driving device 5 drives the insulating block 41 to drive the ten probes to contact the ten contacts on the safety switch 9 one by one. The control device 8 tests the electrical signal conditions of each contact, and then makes the safety switch 9 energized to detect the electrical signals of each contact on the safety switch 9 again, and determines the on-off conditions of each contact on the safety switch 9, so as to realize the test of the contacts on the safety switch 9. The servo linear module 7 drives the insert seat 61 to drive the key insert 6 to move, so that the insertion end of the key insert 6 is inserted into the socket on the safety switch 9. After insertion, pull out the key insert 6 with a certain force, and then insert it back again. When the key insert 6 is inserted into the socket of the safety switch 9, the safety switch 9 is in the locked state and the key insert 6 cannot be pulled out. If the key insert 6 can be pulled out, the product is NG. If it cannot be pulled out, the product is OK. The safety switch 9 is in the unlocked state and the key insert 6 can be pulled out. If the key insert 6 can be pulled out, the product is OK. If it cannot be pulled out, the product is NG.

[0045] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A safety switch testing device, characterized in that: include: A bottom plate, fixedly connected with a first rib frame and a second rib frame; A clamping device is fixedly connected to the first mold frame, and two driving ends of the clamping device are respectively connected to clamping blocks for driving the two clamping blocks to move closer to and away from each other; A positioning plate is arranged below the clamping device and fixedly connected to the first mold frame, a positioning groove is arranged on the top of the front end of the positioning plate, and the positioning groove corresponds to the gap between the two clamping blocks in the upper and lower directions; A probe assembly, composed of a plurality of probes and mounted on the insulating block, wherein the probe assembly corresponds front to back to the gap between the two clamping blocks; A driving device, fixedly connected to the second mold frame and drivingly connected to the insulating block, for driving the insulating block to drive the probe assembly to move forward and backward; A key insert is installed on the insert seat, and the key insert corresponds to the positioning groove in front and back; A servo linear module is fixedly connected to the bottom plate and is drivingly connected to the insert seat, and is used to drive the insert seat to drive the key insert to move forward and backward; The control device is electrically connected to the clamping device, the probe assembly, the driving device and the servo linear module.

2. A safety switch testing device according to claim 1, characterized in that: Limiting baffles are respectively arranged on one side opposite to the lower ends of the two clamping blocks.

3. A safety switch testing device according to claim 1 or 2, characterized in that: A first sensing piece is fixedly connected to the left side of the driving seat of the servo linear module, and a first slot-type photoelectric switch electrically connected to the control device is arranged on the left side of the servo linear module. When the servo linear module drives the driving seat to drive the first sensing piece to move, when the first sensing piece is placed in the slot of the first slot-type photoelectric switch, the servo linear module stops driving.

4. A safety switch testing device according to claim 3, characterized in that: A second sensing piece is fixedly connected to the left side of the driving seat, and a second slot-type photoelectric switch electrically connected to the control device is arranged on the left side of the servo linear module. When the servo linear module drives the driving seat to drive the second sensing piece to move, when the second sensing piece is placed in the slot of the second slot-type photoelectric switch, the servo linear module stops driving.

5. A safety switch testing device according to claim 1, characterized in that: The driving device is a slide cylinder, and a cover shell is arranged on the outer side of the insulating block to cover the insulating block.

6. A safety switch testing device according to claim 1, characterized in that: The clamping device is a pneumatic finger or an electric clamp.

7. A safety switch testing device according to claim 1, characterized in that: The key insert is fixedly connected to the insert seat by screws, and two rows of threaded holes for adjusting the longitudinal fixing position of the key insert are longitudinally arranged on the top of the insert seat.

8. A safety switch testing device according to claim 1, characterized in that: The control device is a PLC controller, and the PLC controller is provided with a display screen, a signal light and a control button.

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