Screen mesh material taking detection device

Abstract

The utility model discloses a silk screen material taking detection device, which belongs to the technical field of material taking detection devices and comprises a frame, a material jacking mechanism for jacking up a silk screen, a mechanical arm for grabbing the silk screen and a photoelectric sensing detection mechanism, and the photoelectric sensing detection mechanism comprises a transmitting part and a receiving part which are respectively arranged on two sides of the frame. The mechanical arm is used for cooperatively detecting the thickness of the clamped silk screen, and the displacement induction detection mechanism is arranged on a claw head of the mechanical arm. According to the technical scheme, the silk screens can be jacked up through the material jacking mechanism, grabbing and conveying of a mechanical arm are facilitated, the photoelectric sensing detection mechanism and the displacement sensing detection mechanism can detect the number of the grabbed silk screens, and in addition, whether the clamping jaw is damaged and frequently falls off or not can be judged through data comparison between the photoelectric sensing detection mechanism and the displacement sensing detection mechanism; whether one of the photoelectric sensing detection mechanism and the displacement sensing detection mechanism is damaged or not is judged.

Description

Technical Field

[0001] The utility model relates to the technical field of material taking detection devices, in particular to a wire mesh material taking detection device. Background Art

[0002] Silk screen is a woven fabric used as a support for silk screen printing plates, commonly known as silk screen, silk screen, gauze, screen, etc. Silk screens commonly used in screen printing include natural silk screen, synthetic silk screen, metal silk screen, special silk screen, etc. The performance of silk screens, such as material, mesh number, opening degree, opening rate, etc., have a great influence on the transfer of screen printing ink. According to different reproduction manuscripts, choosing a suitable silk screen is the prerequisite for obtaining high-quality screen printing reproductions. In the process of processing and production of silk screens, various stations need to be changed frequently for processing, and usually a gripping mechanism such as a robotic arm is used to complete the work of picking up the silk screen.

[0003] When the robot arm grabs the wire mesh, it uses the claws at the claw head to clamp the wire mesh. However, during the process of picking up the material, the wire mesh may slip from the claws, or the claws may grab too much or too little. At this time, due to the lack of detection measures for the number of wire meshes on the claws, the operator will not be able to discover the above problems in time, which may cause inconvenience to subsequent work and even cause some more serious adverse consequences. Therefore, a wire mesh picking detection device is proposed to address the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wire mesh material picking detection device, which is provided with a photoelectric sensing detection mechanism and a displacement sensing detection mechanism. The combined work of the above two mechanisms can more accurately measure the number of grips of the clamping jaws, avoid the situation where over-grasping, under-grasping, and material slipping cannot be discovered in time. In addition, by comparing the data between the two mechanisms, it can be determined whether the clamping jaws frequently slip off due to damage, and whether any of the photoelectric sensing detection mechanism and the displacement sensing detection mechanism is damaged. This solves the technical problems in the prior art that the wire mesh slips off the clamping jaws due to the lack of detection measures for the number of wire meshes on the clamping jaws, and the situation that the clamping jaws may grip too much or too little cannot be discovered in time by the operator, which may bring inconvenience to subsequent work and even cause some more serious adverse consequences.

[0005] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0006] A wire mesh material picking detection device comprises a frame, wherein a material lifting mechanism for lifting the wire mesh is provided, and a mechanical arm for grabbing the wire mesh, a photoelectric sensing detection mechanism, which comprises a transmitting part and a receiving part, which are respectively arranged on both sides of the frame to cooperate in detecting the thickness of the clamped wire mesh, and a displacement sensing detection mechanism, which is arranged on the claw head of the mechanical arm, wherein the displacement sensing detection mechanism comprises a mounting tube, in which a sliding rod is slidably provided, and a contact piece is fixedly connected to the bottom end of the sliding rod, and a micro displacement sensor is provided on one side of the mounting tube, and the upper part of the sliding rod is connected to the telescopic rod end of the micro displacement sensor through a transmission plate.

[0007] Through the above-mentioned structural form, the wire mesh can be lifted up by the lifting mechanism to facilitate the robot arm to grab and transport. The photoelectric sensing detection mechanism and the displacement sensing detection mechanism set therein can detect the number of grabbed wire meshes. Specifically, when the clamping claw of the robot arm grabs the wire mesh, it will be inserted into the gap of the wire mesh and continue to move downward until it stops when the thickness of the specified number of wire meshes is reached. That is, the deeper the position of the clamping claw is inserted, the more wire meshes are clamped. When the clamping claw is inserted, the contact piece will be blocked by the top layer of wire mesh, causing the sliding rod to slide up relative to the clamping claw, thereby driving the telescopic rod end of the micro displacement sensor to move , to measure the entry depth of the clamping jaws, and in disguised form to detect the number of clamps. When the clamping jaws clamp the wire mesh and move up, the wire mesh will be driven to pass through the photoelectric sensing detection mechanism, which can measure the thickness of the grasped wire mesh according to the shielding time of the signal light by the wire mesh, that is, the number of wire meshes. Through the combined work of the photoelectric sensing detection mechanism and the displacement sensing detection mechanism, the number of clamps can be measured more accurately. In addition, by comparing the data between the two, it can be determined whether the clamping jaws frequently drop materials due to damage, and whether any of the photoelectric sensing detection mechanism and the displacement sensing detection mechanism is damaged.

[0008] In one possible implementation, a calibration pressure wheel is threadedly connected to the top end of the sliding rod, the lower end surface of the calibration pressure wheel is rotatably connected to the upper end surface of one end of the transmission plate, and this end of the transmission plate is non-contactly sleeved outside the sliding rod, and the other end of the transmission plate is fixedly sleeved on the end of the telescopic rod of the micro displacement sensor.

[0009] Through the above-mentioned structural form, since the calibration pressure wheel is threadedly connected to the sliding rod, turning the calibration pressure wheel can change the length of the sliding rod extending downward, thereby adjusting the position relationship between the contact piece and the robot arm claw head. The distance that the sliding rod is pushed is numerically equal to the effective gripping thickness of the robot arm claw head, avoiding large errors.

[0010] In a possible implementation, an anti-rotation groove is provided on the slide rod, and a convex strip structure that matches the size of the anti-rotation groove and is in sliding contact with the anti-rotation groove is fixedly provided on the inner wall of the installation tube.

[0011] Through the above-mentioned structural form, the slide bar can be prevented from rotating during the process of sliding up and down, thereby preventing the contact piece at its bottom end from rotating and affecting the movement of the clamping claw on the claw head of the mechanical arm.

[0012] In a possible implementation, a return spring sleeved outside the slide rod is provided between the contact piece and the mounting cylinder, and a top end of the return spring is fixedly connected to the mounting cylinder.

[0013] Through the above-mentioned structural form, the reset spring can push the slide bar back to its original position and drive the micro displacement sensor to return to its initial value, so as to facilitate the detection of the grasping depth of the robot arm when grasping next time.

[0014] In one possible implementation, the transmitting part and the receiving part of the photoelectric sensing detection mechanism have the same structural composition and size, and both include a mounting shell, in which a sensor body is slidably arranged, and a threaded rod with a tightening handwheel at the top is threadedly connected to the mounting shell, and the bottom end of the threaded rod is rotatably connected to the sensor body, wherein the sensor body of the transmitting part is a photoelectric signal transmitter, and the sensor body of the receiving part is a photoelectric signal receiver.

[0015] Through the above-mentioned structural form, the threaded rod can be turned to drive the sensor body to move up and down in the mounting shell, which is convenient for the operator to adjust the working height of the sensor bodies on both sides so that the two can be at the same height to achieve the best coordination effect, avoiding the situation where the sensor bodies on both sides cannot be directly aligned after replacing and repairing the sensor body to ensure the optimal transmission of the signal light beam.

[0016] In a possible implementation, through slots are provided on both sides of the mounting shell, and rectangular sliders are fixedly connected to both sides of the sensor body, and the rectangular sliders are slidably arranged in the through slots.

[0017] Through the above-mentioned structural form, the sensor body can be moved straight up and down without deflection when adjusting the position, which can facilitate efficient adjustment work.

[0018] In a possible implementation, the ejection mechanism includes a guide plate, on which a slide with an ejector rod installed is slidably arranged, and a screw drive structure for driving the slide is installed on the back of the guide plate, and a ejector plate is provided on the top of the ejector rod.

[0019] Through the above-mentioned structural form, the screw drive structure can be used to drive the slide to move up and down along the guide plate, thereby driving the push rod to move up and down to complete the work of lifting the wire mesh.

[0020] In a possible implementation, a mesh placement plate for placing the wire mesh is installed on the frame, a plurality of positioning rods are threadedly connected to the upper end surface of the mesh placement plate, and a through groove is provided on the mesh placement plate to allow the top end of the top rod to pass through.

[0021] Through the above-mentioned structural form, the mesh placement plate provides a place to prevent the wire mesh, and the positioning rod can constrain the position of the wire mesh frame so that the wire mesh can be neatly stacked together, thereby facilitating the robot arm to grasp it.

[0022] In a possible implementation, the robot arm includes a transverse screw slide, which is used to drive a longitudinal screw slide installed thereon to move transversely, and the longitudinal screw slide is used to drive a wire mesh clamp installed thereon to move longitudinally.

[0023] Through the above-mentioned structural form, the transverse screw slide and the longitudinal screw slide can work in combination to drive the wire mesh clamp to move in both transverse and longitudinal directions, so as to grab the wire mesh and move it to the specified position.

[0024] In summary, the utility model includes the following beneficial technical effects:

[0025] The set photoelectric sensing detection mechanism and displacement sensing detection mechanism can detect the number of screens grabbed. Specifically, when the gripper of the robot arm grabs the screen, it will insert into the gap of the screen and continue to move down until it stops when the thickness of the specified number of screens is reached. That is, the deeper the position of the gripper is inserted, the more screens are grabbed. When the gripper is inserted, the contact piece will be blocked by the top layer of screen, so that the slide bar slides up relative to the gripper, thereby driving the telescopic rod end of the micro displacement sensor to move, so as to measure the entry depth of the gripper, and realize the detection of the number of grippers in disguise. When the gripper grabs the screen and moves up, it will drive the screen to pass through the photoelectric sensing detection mechanism, which can measure the thickness of the grabbed screen according to the shielding time of the screen to the signal light, that is, the number of screens. Through the combined work of the photoelectric sensing detection mechanism and the displacement sensing detection mechanism, the number of screens grabbed by the gripper can be measured more accurately.

[0026] In addition, by comparing the data between the two, it is possible to determine whether the clamp is frequently dropping material due to damage, and whether one of the photoelectric sensing detection mechanism and the displacement sensing detection mechanism is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the spatial position relationship between the ejecting mechanism and the mechanical arm of the utility model;

[0030] Figure 3 This is a schematic diagram of the installation position of the displacement sensing detection mechanism of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the displacement sensing detection mechanism of the utility model;

[0032] Figure 5 It is a schematic diagram of the structure of the photoelectric induction detection mechanism of the utility model.

[0033] In the figure: 1. frame; 11. mesh placement plate; 111. positioning rod; 2. ejector mechanism; 21. guide plate; 22. slide; 23. screw drive structure; 24. ejector; 3. mechanical arm; 31. transverse screw slide; 32. longitudinal screw slide; 33. screen clamp; 4. photoelectric sensing detection mechanism; 41. mounting housing; 42. sensor body; 43. threaded rod; 431. tightening hand wheel; 44. rectangular slider; 5. displacement sensing detection mechanism; 51. mounting cylinder; 52. slide; 521. anti-rotation groove; 53. contact piece; 54. micro displacement sensor; 55. transmission plate; 56. calibration pressure wheel; 57. reset spring. DETAILED DESCRIPTION

[0034] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0035] like Figure 1-Figure 3 As shown, a wire mesh material picking detection device provided in this embodiment includes a frame 1, in which a material lifting mechanism 2 for lifting the wire mesh is provided, and a mechanical arm 3 for grabbing the wire mesh, a photoelectric sensing detection mechanism 4, which includes a transmitting part and a receiving part, which are respectively arranged on both sides of the frame 1, for cooperating in detecting the thickness of the clamped wire mesh, and a displacement sensing detection mechanism 5, which is arranged on the claw head of the mechanical arm 3. Through the above-mentioned structural form, the wire mesh can be lifted up by the material lifting mechanism 2, which is convenient for the mechanical arm 3 to grab and transport. The photoelectric sensing detection mechanism 4 and the displacement sensing detection mechanism 5 arranged therein can detect the amount of grabbed wire mesh.

[0036] Among them, the displacement sensing detection mechanism 5 includes a mounting tube 51, in which a slide rod 52 is slidably provided, a contact piece 53 is fixedly connected to the bottom end of the slide rod 52, and a micro displacement sensor 54 is provided on one side of the mounting tube 51. The upper part of the slide rod 52 is connected to the telescopic rod end of the micro displacement sensor 54 through a transmission plate 55. When the clamping claw of the robot arm 3 clamps the wire mesh, it will be inserted into the gap of the wire mesh and continue to move downward until it reaches the thickness of a specified number of wire meshes, that is, the deeper the position of the clamping claw is inserted, the more wire meshes are clamped. When the clamping claw is inserted, the contact piece 53 will be blocked by the top layer of wire mesh, so that the slide rod 52 slides up relative to the clamping claw, thereby driving the telescopic rod end of the micro displacement sensor 54 to move, thereby measuring the entry depth of the clamping claw, and detecting the clamping quantity in disguise.

[0037] When the clamping claw clamps the wire mesh and moves upward, it will drive the wire mesh to pass through the photoelectric sensing detection mechanism 4, which can measure the thickness of the grasped wire mesh, that is, the amount of wire mesh according to the time that the wire mesh blocks the signal light. Through the combined work of the photoelectric sensing detection mechanism 4 and the displacement sensing detection mechanism 5, the grasping amount of the clamping claw can be measured more accurately.

[0038] In addition, by comparing the data between the two, it is possible to determine whether the clamping jaws frequently drop materials due to damage, and whether any of the photoelectric sensing detection mechanism 4 and the displacement sensing detection mechanism 5 is damaged.

[0039] like Figure 4 As shown, a calibration pressure wheel 56 is threadedly connected to the top of the slide bar 52, and the lower end surface of the calibration pressure wheel 56 is rotatably connected to the upper end surface of one end of the transmission plate 55, and this end of the transmission plate 55 is non-contactly sleeved outside the slide bar 52, and the other end of the transmission plate 55 is fixedly sleeved on the telescopic rod end of the micro displacement sensor 54. Through the above-mentioned structural form, since the calibration pressure wheel 56 is threadedly connected to the slide bar 52, turning the calibration pressure wheel 56 can change the length of the slide bar 52 extending downward, and then adjust the position relationship between the contact piece 53 and the claw of the robot arm 3. The distance that the slide bar 52 is pushed is numerically equal to the effective gripping thickness of the claw of the robot arm 3, thereby avoiding large errors.

[0040] In addition, an anti-rotation groove 521 is provided on the slide bar 52, and a convex strip structure that matches the size of the anti-rotation groove 521 and is in sliding contact with it is fixedly provided on the inner wall of the mounting tube 51. Through the above-mentioned structural form, the slide bar 52 can be prevented from rotating during the up and down sliding process, thereby preventing the rotation of the contact piece 53 at its bottom end from affecting the movement of the clamping claw on the claw head of the robot arm 3, and a reset spring 57 is provided between the contact piece 53 and the mounting tube 51 and is sleeved on the outside of the slide bar 52, and the top of the reset spring 57 is fixedly connected to the mounting tube 51. This structural form can use the reset spring 57 to push the slide bar 52 to return to its original position and drive the micro displacement sensor 54 to return to its initial value, so as to facilitate the detection of the grasping depth of the robot arm 3 when grasping next time.

[0041] like Figure 5 As shown, the transmitting part and the receiving part of the photoelectric sensing detection mechanism 4 have the same structural composition and size, and both include a mounting shell 41, in which a sensor body 42 is slidably arranged, and at the same time, a threaded rod 43 with a tightening handwheel 431 at the top is threadedly connected to the mounting shell 41, and the bottom end of the threaded rod 43 is rotatably connected to the sensor body 42, wherein the sensor body 42 of the transmitting part is a photoelectric signal transmitter, and the sensor body 42 of the receiving part is a photoelectric signal receiver. Through the above-mentioned structural form, the threaded rod 43 can be screwed to drive the sensor body 42 to move up and down in the mounting shell 41, so that the operator can adjust the working height of the sensor bodies 42 on both sides so that the two can be at the same height to achieve the best coordination effect, and avoid the sensor bodies 42 on both sides cannot be directly aligned after the sensor bodies 42 are replaced and repaired to ensure the best transmission of the signal light beam.

[0042] In addition, through grooves are opened on both sides of the mounting shell 41, and rectangular sliders 44 are fixedly connected to both sides of the sensor body 42. The rectangular sliders 44 are slidably set in the through grooves. Through the above-mentioned structural form, the sensor body 42 can be moved straight up and down without deflection when adjusting the position, which can facilitate efficient adjustment work.

[0043] like Figure 1 As shown, the ejecting mechanism 2 includes a guide plate 21, on which a slide 22 with a ejector rod 24 is slidably arranged, and a screw drive structure 23 for driving the slide 22 is installed on the back of the guide plate 21. In addition, a ejector plate is provided on the top of the ejector rod 24. Through the above-mentioned structural form, the screw drive structure 23 can drive the slide 22 to move up and down along the guide plate 21, thereby driving the ejector rod 24 to move up and down to complete the work of lifting the wire mesh.

[0044] In addition, a mesh placement plate 11 for placing the wire mesh is installed on the frame 1, and a plurality of positioning rods 111 are threadedly connected to the upper end surface of the mesh placement plate 11, and a through groove is opened on the mesh placement plate 11 to allow the top plate of the top rod 24 to pass through. Through the above-mentioned structural form, the mesh placement plate 11 provides a place to prevent the wire mesh, and the positioning rods 111 can constrain the position of the wire mesh frame so that the wire mesh can be neatly stacked together, thereby facilitating the robot arm 3 to grab it.

[0045] like Figure 2 As shown, the robot arm 3 includes a transverse screw slide 31, which is used to drive the longitudinal screw slide 32 installed thereon to move horizontally, and the longitudinal screw slide 32 is used to drive the wire mesh clamp 33 installed thereon to move longitudinally. Through the above-mentioned structural form, the transverse screw slide 31 and the longitudinal screw slide 32 can work in combination to drive the wire mesh clamp 33 to move in both horizontal and longitudinal directions, so as to facilitate the grabbing of the wire mesh and move it to the specified position.

[0046] The use principle and use process of this utility model:

[0047] The wire mesh is lifted up by the lifting mechanism 2 to facilitate the robot arm 3 to grab and transport it. The photoelectric sensing detection mechanism 4 and the displacement sensing detection mechanism 5 provided therein can detect the amount of the grabbed wire mesh to avoid over-grasping, under-grasping and material slipping without timely detection.

[0048] Specifically, when the gripper of the robot arm 3 grips the wire mesh, it will insert into the gap of the wire mesh and continue to move downward until it stops when the thickness of the specified number of wire meshes is reached, that is, the deeper the gripper is inserted, the more wire meshes are gripped, and when the gripper is inserted, the contact piece 53 will be blocked by the top layer of wire mesh, causing the slide bar 52 to slide up relative to the gripper, thereby driving the telescopic rod end of the micro-displacement sensor 54 to move, thereby measuring the entry depth of the gripper, and detecting the number of grippers in disguised form; at the same time, when the gripper grips the wire mesh and moves up, it will drive the wire mesh to pass through the photoelectric sensing detection mechanism 4, which can measure the thickness of the gripped wire mesh, that is, the number of wire meshes, according to the shielding time of the wire mesh to the signal light, and through the combined work of the photoelectric sensing detection mechanism 4 and the displacement sensing detection mechanism 5, the number of grippers can be measured more accurately.

[0049] In addition, by comparing the data between the two, it is possible to determine whether the clamping jaws frequently drop materials due to damage, and whether any of the photoelectric sensing detection mechanism 4 and the displacement sensing detection mechanism 5 is damaged.

[0050] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A screen material taking detection device, characterized in that: include: A frame (1) is provided with a lifting mechanism (2) for lifting the wire mesh, and a mechanical arm (3) for grabbing the wire mesh; A photoelectric sensing detection mechanism (4), comprising a transmitting part and a receiving part, which are respectively arranged on both sides of the frame (1) and are used to cooperate in detecting the thickness of the clamped screen; A displacement sensing detection mechanism (5) is arranged on the claw of the mechanical arm (3); The displacement sensing detection mechanism (5) comprises a mounting tube (51), a slide rod (52) is slidably arranged in the mounting tube (51), a contact piece (53) is fixedly connected to the bottom end of the slide rod (52), a micro displacement sensor (54) is arranged on one side of the mounting tube (51), and the upper part of the slide rod (52) is transmission-connected to the telescopic rod end of the micro displacement sensor (54) via a transmission plate (55).

2. A screen material taking detection device according to claim 1, characterized in that: The top end of the slide bar (52) is threadedly connected with a calibration pressure wheel (56), the lower end surface of the calibration pressure wheel (56) is rotatably connected to the upper end surface of one end of a transmission plate (55), and the end of the transmission plate (55) is non-contactly sleeved outside the slide bar (52), and the other end of the transmission plate (55) is fixedly sleeved on the telescopic rod end of the micro displacement sensor (54).

3. A screen material taking detection device according to claim 1, characterized in that: The slide bar (52) is provided with an anti-rotation groove (521), and the inner wall of the installation cylinder (51) is fixedly provided with a convex strip structure that matches the size of the anti-rotation groove (521) and is in sliding contact with the anti-rotation groove (521).

4. A screen material taking detection device according to claim 1, characterized in that: A return spring (57) sleeved outside the slide rod (52) is provided between the contact piece (53) and the installation tube (51), and the top end of the return spring (57) is fixedly connected to the installation tube (51).

5. A screen material taking detection device according to claim 1, characterized in that: The transmitting part and the receiving part of the photoelectric sensing detection mechanism (4) have the same structure and size, and both include a mounting shell (41), in which a sensor body (42) is slidably arranged, and a threaded rod (43) with a tightening hand wheel (431) at the top is threadedly connected to the mounting shell (41), and the bottom end of the threaded rod (43) is rotatably connected to the sensor body (42); The sensor body (42) of the transmitting part is a photoelectric signal transmitter, and the sensor body (42) of the receiving part is a photoelectric signal receiver.

6. A screen material taking detection device according to claim 5, characterized in that: Through slots are provided on both sides of the installation shell (41), and rectangular sliders (44) are fixedly connected to both sides of the sensor body (42), and the rectangular sliders (44) are slidably arranged in the through slots.

7. A screen material taking detection device according to claim 1, characterized in that: The ejection mechanism (2) comprises a guide plate (21), on which a slide table (22) equipped with an ejector rod (24) is slidably arranged, and a screw drive structure (23) for driving the slide table (22) is installed on the back of the guide plate (21), and an ejector plate is provided at the top end of the ejector rod (24).

8. A screen material taking detection device according to claim 7, characterized in that: The frame (1) is provided with a screen placement plate (11) for placing a screen, the upper end surface of the screen placement plate (11) is threadedly connected with a plurality of positioning rods (111), and the screen placement plate (11) is provided with a through slot for allowing a top plate to pass through.

9. A screen material taking detection device according to claim 1, characterized in that: The mechanical arm (3) comprises a transverse screw slide (31) for driving a longitudinal screw slide (32) mounted thereon to move transversely, and the longitudinal screw slide (32) is used to drive a wire mesh clamp (33) mounted thereon to move longitudinally.

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