Detection machine with anti-failure safety control function

Abstract

The utility model discloses a detection machine table with an anti-failure safety control function, which comprises a base table, a working table, a detection device, a plane driving mechanism and a jacking mechanism, and is characterized in that the detection device is erected above the base table; the plane driving mechanism drives the workbench to move back and forth along the sliding rail of the base table, and when the workbench moves to the rear end position, the workbench enters the detection range of the detection device; the jacking mechanism comprises an operation button, an air cylinder and a jacking piece which is driven by the air cylinder to support the workbench upper cover. The machine table further comprises a safety control module, the safety control module comprises a position sensor, a controller and a guide rail clamping device fixed to the working table, the position sensor detects signals of the position, located at the front end, of the working table, the controller comprises a logic gate circuit and an operation button, and digital signals generated by the position sensor are input into the logic gate circuit. And the output end of the logic gate circuit is electrically connected with the guide rail clamp. And if the machine is abnormal, the logic gate circuit starts the guide rail clamp to lock the rail, so that out-of-control operation of machine equipment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical detection field especially relates to a detection machine platform with anti -failure safety control function. BACKGROUND

[0002] The Chinese invention application with the publication number CN113984779A discloses a PCB through hole detection equipment, when the table top is in the feeding position, the operator presses the button, the power mechanism (namely the air cylinder) on the left and right sides props up the glass cover plate on the table top, and makes the glass cover plate and the table top horizontal plane form a 45 DEG inclination angle.

[0003] In this case, the force exerted by the jacking piece driven by the air cylinder on the cover plate can be decomposed into an upward longitudinal force and a horizontal transverse force; in order to realize force balance to ensure that the table top does not move, the planar driving mechanism, namely the table top motor, needs to enter the enabled state to provide the table top with a force opposite to the decomposed horizontal transverse force.

[0004] However, the table top motor is prone to losing the enabled state due to various factors, such as power failure, self-stability and other factors, which cause the table top to lose the balancing force provided by the table top, so in this case the force balance is broken, the table top will move uncontrollably in the direction of the decomposed transverse force, causing mechanism collision, becoming a major safety hazard, and causing damage to the equipment.

[0005] The disclosure of the above background art content is only used to assist in understanding the concept and technical solutions of the present application, and it does not necessarily belong to the prior art of the present application, nor does it necessarily provide technical teaching; in the absence of explicit evidence that the above content has been disclosed before the filing date of the present application, the above background art should not be used to evaluate the novelty and inventiveness of the present application. UTILITY MODEL CONTENT

[0006] The utility model aims at providing an improved detection machine platform with anti -failure safety control function, which uses logic gate circuit to control the track clamping device to be locked in the case of abnormality of the machine platform, so as to avoid the uncontrollable operation of the machine platform equipment.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A detection machine platform with anti -failure safety control function, including base station, workstation, detection device, planar driving mechanism and top support mechanism, wherein the base station is equipped with two slide rails arranged side by side in front and back direction on it;

[0009] The detection device is erected above the rear part of the base station;

[0010] Under the driving of the planar driving mechanism, the workbench moves forward and backward along the slide rail of the base, and limit positions defining forward and backward moving strokes are respectively a first position and a second position, when the workbench moves to the second position, the workbench enters the detection range of the detection device;

[0011] The workbench is further provided with an openable upper cover, and the top supporting mechanism is arranged at the side edge of the workbench, and the top supporting mechanism comprises an operation button, a cylinder and a top supporting piece, when the cylinder acts, the top supporting piece supports the upper cover;

[0012] The detection machine further comprises a safety control module, which comprises a position sensor, a controller and a guide rail clamp fixed on the workbench and sleeved on the slide rail, the position sensor is configured to detect a signal that the workbench is located at the first position, the controller comprises a logic gate circuit, digital signals generated by the operation button and the position sensor are input into the logic gate circuit, and an output end of the logic gate circuit is electrically connected with the guide rail clamp.

[0013] Further, any one of the technical solutions or the combination of the technical solutions is described above, when the workbench moves to the first position, the position sensor generates a high-level signal; and when the workbench moves away from the first position, the position sensor generates a low-level signal.

[0014] When the operation button is pressed, a high-level signal is generated; and when the operation button is not pressed, a low-level signal is generated.

[0015] The logic gate circuit comprises a first AND gate, a NOT gate and a second AND gate, the operation button and the position sensor are connected with input ends of the first AND gate, the cylinder is connected with an output end of the first AND gate, when the first AND gate outputs a high-level signal, the cylinder acts;

[0016] The position sensor is connected with an input end of the NOT gate, an output end of the NOT gate is connected with one input end of the second AND gate, the operation button or the output end of the first AND gate is connected with another input end of the second AND gate, and the guide rail clamp is connected with an output end of the second AND gate, when the second AND gate outputs a high-level signal, the guide rail clamp is locked with the slide rail.

[0017] Further, any one of the preceding technical solutions or a combination of multiple technical solutions, the circuit of the first AND gate comprises a first power supply, a first resistor, a first diode and a second diode, wherein one end of the first resistor is connected with the first power supply, and the other end thereof is connected with the anode of the first diode, the anode of the second diode, the ground and the control end of the cylinder respectively, the cathode of the first diode is connected with the position sensor, and the cathode of the second diode is connected with the operation button.

[0018] Alternatively, the circuit of the first AND gate comprises a third diode, a fourth diode and a second resistor, wherein one end of the second resistor is grounded, and the other end thereof is connected with the cathode of the third diode, the cathode of the fourth diode and the control end of the cylinder respectively, the anode of the third diode is connected with the position sensor, and the anode of the fourth diode is connected with the operation button.

[0019] Further, any one of the preceding technical solutions or a combination of multiple technical solutions, the circuit of the NOT gate comprises a transistor and a third resistor, wherein the base of the transistor is connected with the position sensor through the third resistor, the source of the transistor is connected with the second AND gate, and the drain of the transistor is grounded.

[0020] Further, any one of the preceding technical solutions or a combination of multiple technical solutions, the circuit of the second AND gate comprises a second power supply, a fourth resistor, a fifth diode and a sixth diode, wherein one end of the fourth resistor is connected with the second power supply, and the other end thereof is connected with the anode of the fifth diode, the anode of the sixth diode, the ground and the rail clamp respectively, the cathode of the fifth diode is connected with the output end of the NOT gate, and the cathode of the sixth diode is connected with the operation button or the output end of the first AND gate.

[0021] Alternatively, the circuit of the second AND gate comprises a seventh diode, an eighth diode and a fifth resistor, wherein one end of the fifth resistor is grounded, and the other end thereof is connected with the cathode of the seventh diode, the cathode of the eighth diode and the rail clamp respectively, the anode of the seventh diode is connected with the output end of the NOT gate, and the anode of the eighth diode is connected with the operation button or the output end of the first AND gate.

[0022] Further, any one of the preceding technical solutions or a combination of multiple technical solutions, when the workbench moves to the first position, the position sensor generates a high-level signal; when the workbench moves away from the first position, the position sensor generates a low-level signal.

[0023] When the operation button is pressed, it generates a high-level signal to trigger the cylinder to act; when the operation button is not pressed, it generates a low-level signal.

[0024] The logic gate circuit includes a NOT gate and an AND gate, the position sensor is connected with an input end of the NOT gate, the operation button and an output end of the NOT gate are connected with input ends of the AND gate, and the guide rail clamp is connected with an output end of the AND gate, so that the guide rail clamp is locked with the slide rail when the AND gate outputs a high level.

[0025] Further, any of the technical solutions or the combination of the technical solutions, the position sensor is any one of a proximity sensor, a magnetic sensor, a capacitive sensor, a potentiometer, and an ultrasonic sensor, which is arranged at a side of the first position.

[0026] Further, any of the technical solutions or the combination of the technical solutions, the position sensor generates a low level signal when the workbench moves to the first position, and generates a high level signal when the workbench moves away from the first position.

[0027] The operation button generates a high level signal to trigger the cylinder to act when the operation button is pressed, and generates a low level signal when the operation button is not pressed.

[0028] The logic gate circuit is an AND gate, the operation button and the position sensor are connected with input ends of the AND gate, and the guide rail clamp is connected with an output end of the AND gate, so that the guide rail clamp is locked with the slide rail when the AND gate outputs a high level.

[0029] Further, any of the technical solutions or the combination of the technical solutions, the position sensor generates a low level signal when the workbench moves to the first position, and generates a high level signal when the workbench moves away from the first position.

[0030] The operation button generates a high level signal when the operation button is pressed, and generates a low level signal when the operation button is not pressed.

[0031] The logic gate circuit includes a NOT gate, a first AND gate and a second AND gate, the position sensor is connected with an input end of the NOT gate, the operation button and an output end of the NOT gate are connected with input ends of the first AND gate, and the cylinder is connected with an output end of the first AND gate, so that the cylinder acts when the first AND gate outputs a high level.

[0032] An output end of the NOT gate is connected with one input end of the second AND gate, the operation button or an output end of the first AND gate is connected with an input end of the second AND gate, and the guide rail clamp is connected with an output end of the second AND gate, so that the guide rail clamp is locked with the slide rail when the second AND gate outputs a high level.

[0033] Further, any of the technical solutions or the combination of the technical solutions, the position sensor is a photoelectric sensor, which includes a transmitting probe and a receiving probe, which are arranged on the left and right sides of the first position respectively.

[0034] The technical scheme provided by the utility model has the beneficial effects as follows:

[0035] a. In the case of abnormality of the machine table, the track is locked by the guide rail clamp to prevent the machine table from running out of control;

[0036] b. The utility model does not use software control, and compared with the software control mode, the hardware control mode of the logic gate has instantaneity and higher reliability;

[0037] c. A set of safety devices is added to the original hardware device, which can prevent the failure from occurring without affecting the original function, and increase the safety of the overall device. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0039] Figure 1 The structure diagram of the detection machine table with the anti-failure safety control function is provided for an exemplary embodiment of the utility model;

[0040] Figure 2 The side view of the workbench of the detection machine table in the state of opening the upper cover is provided for an exemplary embodiment of the utility model;

[0041] Figure 3 The block diagram of the logic gate of the first embodiment of the utility model;

[0042] Figure 4 The circuit diagram of the first AND gate in the logic gate of the first embodiment;

[0043] Figure 5 The circuit diagram of the first AND gate in the logic gate of the second embodiment;

[0044] Figure 6 The circuit diagram of the NOT gate and the second AND gate in the logic gate of the first embodiment;

[0045] Figure 7Circuit diagram for a second AND gate in the logic gate circuit of the third embodiment

[0046] Figure 8 Block diagram of the logic gate circuit of the fourth embodiment of the present application

[0047] Figure 9 Block diagram of the logic gate circuit of the fifth embodiment of the present application

[0048] Figure 10 Block diagram of the logic gate circuit of the sixth embodiment of the present application

[0049] Wherein, the reference signs include: 1 - abutment, 11 - slide rail, 21 - upper cover, 22 - workbench, 32 - top support, 34 - air cylinder, 8 - detection device, 9 - guide rail clamp. DETAILED DESCRIPTION

[0050] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0051] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0052] In an embodiment of the present application, a detection machine table with a failure prevention safety control function is provided, which prevents abnormal mechanical collision caused by the loss of enable state of the table surface motor, such as Figure 1 As shown, the detection machine table includes a base 1, a workbench 22, a detection device 8, a planar driving mechanism and a top support mechanism, wherein the base 1 is provided with two slide rails 11 arranged side by side in the front-rear direction;

[0053] The detection device 8 is arranged above the rear part of the base 1.

[0054] Under the driving of the planar driving mechanism, the workbench 22 moves back and forth along the slide rail 11 of the base 1, and the limit positions defining the back and forth moving stroke are respectively a first position and a second position, when the workbench 22 moves to the second position, the workbench 22 enters the detection range of the detection device 8;

[0055] The workbench 22 is further provided with an openable upper cover 21, and the jacking mechanism is arranged at the side edge of the workbench 22, and the jacking mechanism comprises an operation button, a cylinder 34 and a jacking piece 32, when the cylinder 34 acts, the jacking piece 32 props up the upper cover 21;

[0056] Chinese invention application with publication number CN113984779A discloses a PCB through hole detection equipment, and the disclosure of CN113984779A is incorporated herein by reference in its entirety.

[0057] The working process of the detection machine is as follows: the planar driving mechanism drives the workbench 22 to move to the first position, i.e. the feeding position, then the manual or mechanical hand in front of the first position presses the operation button, the cylinder 34 of the jacking mechanism is opened to work, so that the jacking piece 32 props up the upper cover 21 in the closed state, i.e. is converted to the open state as shown in Figure 1 and Figure 2 In this state, the manual or mechanical hand in front of the first position lays the board to be detected (including various PCBs or carrier boards and other electronic circuit boards) on the workbench 22, and then the jacking mechanism cylinder 34 can be restored to the initial state by pressing the operation button again or other control keys, i.e. the jacking piece 32 with the upper cover 21 is lowered to finally restore to the closed state, so that the upper cover 21 (glass material) can press the board to be detected to ensure the flatness to improve the detection accuracy.

[0058] Then the planar driving mechanism drives the workbench 22 to move backward to the second position, i.e. below the detection device 8, and the detection device 8 starts optical detection on the board pressed by the upper cover 21, after the detection is completed, the planar driving mechanism drives the workbench 22 to move forward to the first position again to replace the next board to be detected.

[0059] On the basis of the detection equipment disclosed in Chinese invention application with publication number CN113984779A, the detection machine of the utility model further comprises a safety control module, which comprises a position sensor, a controller and a guide rail clamp 9 fixed on the workbench (such as the lower surface thereof) and sleeved on the slide rail 11, as shown in Figure 2 ;

[0060] The position sensor is configured to detect a signal that the workbench is located at the first position, the controller includes a logic gate circuit, the digital signals generated by the operation button and the position sensor are input into the logic gate circuit, and an output end of the logic gate circuit is electrically connected with the guide rail clamp 9.

[0061] The first basic level scheme of the scheme to be realized by the logic gate circuit is that when the safety control module is in a working state in which the workbench 22 is away from the first position and the cylinder 34 is driving the support piece 32 to support the cover 21, and the two conditions are met at the same time, the guide rail clamp acts, that is, clamps and locks the slide rail; since the guide rail clamp is fixed on the workbench 22, the workbench 22 can be prevented from continuing to move on the slide rail.

[0062] The second level scheme to be realized by the utility model is that when the workbench 22 is located at the first position and the operation button is pressed at the same time, the two conditions are met at the same time, and the cylinder is allowed to start.

[0063] First embodiment

[0064] In the embodiment, the position sensor adopts any one of a proximity sensor, a magnetic sensor, a capacitive sensor, a potentiometer and an ultrasonic sensor, and is arranged at the side of the first position. For the position sensor, when the workbench 22 moves to the first position, the position sensor generates a high-level signal; when the workbench 22 is away from the first position, the position sensor generates a low-level signal.

[0065] When the operation button is pressed, it generates a high-level signal; when the operation button is not pressed (including being pressed again in the case that the operation button generates a high-level signal), it generates a low-level signal.

[0066] The logic gate circuit of the embodiment includes a first AND gate, a NOT gate and a second AND gate, as shown in the figure, the operation button and the position sensor are connected with the input end of the first AND gate, the cylinder 34 is connected with the output end of the first AND gate, when the first AND gate outputs a high level, the cylinder 34 acts. Figure 3

[0067] The position sensor is connected with the input end of the NOT gate, the output end of the NOT gate is connected with one input end of the second AND gate, the operation button or the output end of the first AND gate is connected with the other input end of the second AND gate, and the guide rail clamp is connected with the output end of the second AND gate, when the second AND gate outputs a high level, the guide rail clamp is locked with the slide rail.

[0068] Specifically, the circuit of the first AND gate is as shown in the figure. Figure 4 ​As shown, it includes a first power supply Vcc1, a first resistor R1, a first diode VD1, and a second diode VD2. One end of the first resistor R1 is connected to the first power supply Vcc1, and the other end is connected to the positive terminal of the first diode VD1, the positive terminal of the second diode VD2, ground (GND), and the control terminal of the cylinder. The negative terminal of the first diode VD1 is connected to the position sensor, and the negative terminal of the second diode VD2 is connected to the operation button.

[0069] The circuit of the NOT gate is as follows: Figure 6 The left half of the diagram is shown, which includes a transistor and a third resistor R3. The base of the transistor is connected to the position sensor via the third resistor R3, the source of the transistor is connected to the second AND gate, and the drain of the transistor is grounded. Specifically, it can also be as follows: Figure 6 As shown, the base of the transistor is further connected to the negative power supply, -VBB, through a sixth resistor R6.

[0070] The circuit of the second AND gate is as follows: Figure 6 The right half of the diagram is shown, which includes a second power supply Vcc2, a fourth resistor R4, a fifth diode VD5, and a sixth diode VD6. One end of the fourth resistor R4 is connected to the second power supply Vcc2, and the other end is connected to the anode of the fifth diode VD5, the anode of the sixth diode VD6, ground (GND), and the rail clamp. The cathode of the fifth diode VD5 is connected to the output of the NOT gate (i.e., the source of the transistor). The cathode of the sixth diode VD6 is connected to the operation button or the output of the first AND gate (i.e., the source of the transistor). Figure 4 The positive terminals of the first diode VD1 and the second diode VD2 are connected.

[0071] Second Embodiment

[0072] The first AND gate in this embodiment is similar to that in the first embodiment. Figure 4 The circuit shown is different; in this embodiment, the circuit of the first AND gate is as follows: Figure 5 As shown, it includes a third diode VD3, a fourth diode VD4, and a second resistor R2. One end of the second resistor R2 is grounded, and the other end is connected to the negative terminal of the third diode VD3, the negative terminal of the fourth diode VD4, and the control terminal of the cylinder. The positive terminal of the third diode VD3 is connected to the position sensor, and the positive terminal of the fourth diode VD4 is connected to the operation button.

[0073] The rest can be the same as the first embodiment.

[0074] Third Embodiment

[0075] The second AND gate in this embodiment is similar to that in the first embodiment. Figure 6 The circuit shown is different; in this embodiment, the circuit of the second AND gate is as follows: Figure 7 The right half of the diagram is shown, which includes a seventh diode VD7, an eighth diode VD8, and a fifth resistor R5. One end of the fifth resistor R5 is grounded, and its other end is connected to the cathode of the seventh diode VD7, the cathode of the eighth diode VD8, and the rail clamp, respectively. The anode of the seventh diode VD7 is connected to the output of the NOT gate, and the anode of the eighth diode is connected to the operation button or the output of the first AND gate (which may be as shown in the first embodiment). Figure 4 The positive terminals of the first diode VD1 / second diode VD2 shown can also be as in the second embodiment. Figure 5 The negative terminals of the third diode VD3 and the fourth diode VD4 are connected as shown.

[0076] The rest can be the same as the first embodiment or the second embodiment.

[0077] Fourth embodiment

[0078] Similar to the first embodiment, when the worktable moves to the first position, the position sensor generates a high-level signal; when the worktable leaves the first position, the position sensor generates a low-level signal; when the operation button is pressed, it generates a high-level signal to trigger the cylinder to move; when the operation button is not pressed, it generates a low-level signal.

[0079] Unlike the first embodiment, this embodiment implements the basic layer solution described above, that is, pressing the operation button triggers the cylinder to start working; the logic gate circuit is as follows: Figure 8 As shown, it includes a NOT gate and an AND gate. The position sensor is connected to the input terminal of the NOT gate. The operation button and the output terminal of the NOT gate are connected to the input terminal of the AND gate. The guide rail clamp is connected to the output terminal of the AND gate. When the AND gate outputs a high level, the guide rail clamp locks to the slide rail.

[0080] Fifth embodiment

[0081] In this embodiment, the position sensor is a photoelectric sensor, which includes a transmitting probe and a receiving probe, respectively arranged on the left and right sides of the first position. When the worktable moves to the first position, the signal between the transmitting probe and the receiving probe of the photoelectric sensor is blocked, and the position sensor generates a low-level signal; when the worktable leaves the first position, the signal between the transmitting probe and the receiving probe is not blocked, and the position sensor generates a high-level signal.

[0082] The same as the above-mentioned embodiments is that when the operation button is pressed, it generates a high-level signal to trigger the cylinder to act; when the operation button is not pressed, it generates a low-level signal.

[0083] The embodiment realizes the above-mentioned basic level scheme, that is, it is implemented by pressing the operation button to trigger the cylinder to start working; the logic gate circuit is an AND gate, as shown in the figure. Figure 9 As shown in the figure, the operation button, the position sensor and the input end of the AND gate are connected, and the guide rail clamp and the output end of the AND gate are connected. When the AND gate outputs a high level, the guide rail clamp is locked with the slide rail.

[0084] Sixth embodiment

[0085] The same as the fifth embodiment is that when the workbench moves to the first position, the position sensor generates a low-level signal; when the workbench leaves the first position, the position sensor generates a high-level signal; when the operation button is pressed, it generates a high-level signal; when the operation button is not pressed, it generates a low-level signal.

[0086] As shown in the figure, Figure 10 The logic gate circuit includes a NOT gate, a first AND gate and a second AND gate, the position sensor is connected with the input end of the NOT gate, the operation button, the output end of the NOT gate and the input end of the first AND gate are connected, the cylinder is connected with the output end of the first AND gate, and the cylinder acts when the first AND gate outputs a high level.

[0087] The output end of the NOT gate is connected with one input end of the second AND gate, the operation button or the output end of the first AND gate is connected with the input end of the second AND gate, and the guide rail clamp is connected with the output end of the second AND gate. When the second AND gate outputs a high level, the guide rail clamp is locked with the slide rail.

[0088] In summary, in the first embodiment, the second embodiment, the third embodiment and the sixth embodiment, the logic gate circuit controls the cylinder to start working only when the workbench 22 is located at the first position and the operation button is pressed, and controls the guide rail clamp to act when the workbench 22 leaves the first position and the cylinder 34 is in the state of driving the top support piece 32 to support the upper cover 21, so as to prevent the workbench from moving backward on the slide rail 11 due to the failure of the detection base.

[0089] And in the fourth embodiment and the fifth embodiment, the logic gate circuit controls the guide rail clamp to act when the workbench 22 leaves the first position and the cylinder 34 is in the state of driving the top support piece 32 to support the upper cover 21, so as to prevent the workbench from moving backward on the slide rail 11 due to the failure of the detection base.

[0090] The above six embodiments can ensure that the guide rail gripper is triggered only when necessary, and is not triggered in non-exceptional cases such as when the worktable 22 does not leave the first position, or when the cylinder is starting work, which is not actually an abnormal situation. This can reduce the wear and tear on the guide rail gripper, reduce the frequency of replacing the guide rail gripper, and reduce costs.

[0091] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0092] The above description is merely one specific implementation of the application. It should be noted that, for one of ordinary skill in the art, without departing from the principles of the application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the scope of protection of the application.

Claims

1. A detection machine with a fail-safe safety control function, characterized by, The base, the workbench, the detection device, the planar driving mechanism and the top supporting mechanism are provided with two slide rails arranged side by side in the front-rear direction on the base; The detection device is arranged above the rear part of the base; Under the driving of the planar driving mechanism, the workbench moves along the slide rails of the base, and the limit positions of the front-rear moving stroke are the first position and the second position respectively, when the workbench moves to the second position, the workbench enters the detection range of the detection device; The workbench is further provided with an openable upper cover, and the top supporting mechanism is arranged on the side of the workbench, the top supporting mechanism comprises an operation button, a gas cylinder and a top supporting piece, when the gas cylinder acts, the top supporting piece supports the upper cover; The detection device further comprises a safety control module, which comprises a position sensor, a controller and a guide rail clamp arranged on the workbench and surrounding the slide rails, the position sensor is configured to detect the signal that the workbench is located at the first position, the controller comprises a logic gate circuit, the digital signals generated by the operation button and the position sensor are input into the logic gate circuit, and the output end of the logic gate circuit is electrically connected with the guide rail clamp.

2. The inspection machine of claim 1, wherein, When the workbench moves to the first position, the position sensor generates a high-level signal; when the workbench moves away from the first position, the position sensor generates a low-level signal; When the operation button is pressed, it generates a high-level signal; when the operation button is not pressed, it generates a low-level signal; The logic gate circuit comprises a first AND gate, a NOT gate and a second AND gate, the operation button and the position sensor are connected with the input end of the first AND gate, the gas cylinder is connected with the output end of the first AND gate, when the first AND gate outputs a high-level signal, the gas cylinder acts; The position sensor is connected with the input end of the NOT gate, the output end of the NOT gate is connected with one input end of the second AND gate, the operation button or the output end of the first AND gate is connected with the other input end of the second AND gate, and the guide rail clamp is connected with the output end of the second AND gate, when the second AND gate outputs a high-level signal, the guide rail clamp is locked with the slide rails.

3. The inspection machine of claim 2, wherein: The circuit of the first AND gate comprises a first power supply, a first resistor, a first diode and a second diode, one end of the first resistor is connected with the first power supply, the other end thereof is respectively connected with the positive electrode of the first diode, the positive electrode of the second diode, the ground and the control end of the gas cylinder, the negative electrode of the first diode is connected with the position sensor, and the negative electrode of the second diode is connected with the operation button. Alternatively, the circuit of the first AND gate comprises a third diode, a fourth diode and a second resistor, one end of the second resistor is grounded, the other end thereof is respectively connected with the negative electrode of the third diode, the negative electrode of the fourth diode and the control end of the gas cylinder, the positive electrode of the third diode is connected with the position sensor, and the positive electrode of the fourth diode is connected with the operation button.

4. The inspection machine of claim 2, wherein the safety control function is configured to prevent the machine from failing. The circuit of the NOT gate comprises a transistor and a third resistor, wherein the base of the transistor is connected with the position sensor through the third resistor, the source of the transistor is connected with the second AND gate, and the drain of the transistor is grounded.

5. The inspection machine of claim 2, wherein the safety control function is configured to prevent failure of the inspection machine. The circuit of the second AND gate comprises a second power supply, a fourth resistor, a fifth diode and a sixth diode, wherein one end of the fourth resistor is connected with the second power supply, the other end of the fourth resistor is connected with the positive electrode of the fifth diode, the positive electrode of the sixth diode, the ground and the guide rail clamp respectively, the negative electrode of the fifth diode is connected with the output end of the NOT gate, and the negative electrode of the sixth diode is connected with the operation button or the output end of the first AND gate. Alternatively, the circuit of the second AND gate comprises a seventh diode, an eighth diode and a fifth resistor, wherein one end of the fifth resistor is grounded, the other end of the fifth resistor is connected with the negative electrode of the seventh diode, the negative electrode of the eighth diode and the guide rail clamp respectively, the positive electrode of the seventh diode is connected with the output end of the NOT gate, and the positive electrode of the eighth diode is connected with the operation button or the output end of the first AND gate.

6. The inspection machine of claim 1, wherein the safety control function is configured to prevent failure of the inspection machine. When the workbench moves to the first position, the position sensor generates a high-level signal; when the workbench moves away from the first position, the position sensor generates a low-level signal. When the operation button is pressed, it generates a high-level signal to trigger the action of the air cylinder; when the operation button is not pressed, it generates a low-level signal. The logic gate circuit comprises a NOT gate and an AND gate, the position sensor is connected with the input end of the NOT gate, the operation button and the output end of the NOT gate are connected with the input end of the AND gate, and the guide rail clamp is connected with the output end of the AND gate; when the AND gate outputs a high-level signal, the guide rail clamp is locked with the slide rail.

7. The detection machine table with the fail-safe safety control function according to any one of claims 2 to 6, characterized in that, The position sensor is any one of a proximity sensor, a magnetic sensor, a capacitive sensor, a potentiometer and an ultrasonic sensor, which is arranged at the side of the first position.

8. The inspection machine of claim 1, wherein: When the workbench moves to the first position, the position sensor generates a low-level signal; when the workbench moves away from the first position, the position sensor generates a high-level signal. When the operation button is pressed, it generates a high-level signal to trigger the action of the air cylinder; when the operation button is not pressed, it generates a low-level signal. The logic gate circuit is an AND gate, the operation button and the position sensor are connected with the input end of the AND gate, and the guide rail clamp is connected with the output end of the AND gate; when the AND gate outputs a high-level signal, the guide rail clamp is locked with the slide rail.

9. The inspection machine of claim 1, wherein: When the workbench moves to the first position, the position sensor generates a low-level signal; when the workbench moves away from the first position, the position sensor generates a high-level signal. When the operation button is pressed, it generates a high-level signal; when the operation button is not pressed, it generates a low-level signal. The logic gate circuit comprises a NOT gate, a first AND gate and a second AND gate, the position sensor is connected with an input end of the NOT gate, the operation button and an output end of the NOT gate are connected with input ends of the first AND gate, a cylinder is connected with an output end of the first AND gate, and the cylinder is actuated when the first AND gate outputs a high level; an output end of the NOT gate is connected with one input end of the second AND gate, the operation button or an output end of the first AND gate is connected with input ends of the second AND gate, and a guide rail clamp is connected with an output end of the second AND gate, and the guide rail clamp is locked with the slide rail when the second AND gate outputs a high level.

10. The detection machine table with the failure prevention safety control function according to claim 8 or 9, characterized in that, The position sensor is an optical sensor, which comprises a transmitting probe and a receiving probe, and the transmitting probe and the receiving probe are respectively arranged on left and right sides of the first position.

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