A gas meter cover assembly system

Abstract

The present invention discloses a gas meter face cover assembly system, and relates to the technical field of gas meter production. The present invention comprises a double-headed grabbing mechanism, a placement station, and two material grabbing locations, wherein the double-headed grabbing mechanism is provided with a first grabbing structure and a second grabbing structure, and the two material grabbing locations are respectively located on both sides of the placement station, and the spacing between the placement station and any one of the material grabbing locations is equal to the spacing between the first grabbing structure and the second grabbing structure. The present invention grabs the nameplate and the face cover through the double-headed grabbing mechanism, and the reciprocating operation of the double-headed structure enables the first grabbing structure for grabbing the face cover and the second grabbing structure for grabbing the nameplate to work synchronously and without interfering with each other, thereby solving the problem of incorrect pairing of the nameplate and the face cover, and improving the assembly efficiency of the nameplate and the face cover.

Description

Technical Field

[0001] The invention belongs to the technical field of gas meter production, and in particular relates to a gas meter face cover assembly system. Background Art

[0002] In the automated assembly process of prefabricated products, different parts are assembled by automated feeding at both ends. The automated feeding equipment at both ends needs to work together, but different automated equipment may cause product misalignment due to accuracy problems or malfunctions.

[0003] Taking the assembly of the gas surface cover as an example, a label needs to be assembled on the gas surface cover to distinguish each gas meter through the label, and any gas meter has a corresponding label. When the surface cover and the label are transported to the assembly position at the feed end, if the matching accuracy of the surface cover and the feed end of the label is insufficient, the two feed ends will interfere with each other. In this case, if the surface cover and the label are not cross-fed, the subsequent assembly of the surface cover and the label will not correspond. If the surface cover and the label do not correspond, the label will not correspond to the gas meter when the surface cover is assembled with the gas meter, resulting in the inability to find the corresponding gas meter through the label.

[0004] It can be seen that in the prior art, there is a problem that the matching accuracy of the parallel feed ends is insufficient, resulting in incorrect product pairing. Summary of the invention

[0005] The object of the present invention is to provide a gas meter face cover assembly system for solving the problem of incorrect matching between the face cover and the nameplate caused by insufficient precision of the feed end.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] A gas meter face cover assembly system includes a double-headed grabbing mechanism, a placement station and two material grabbing locations, wherein the double-headed grabbing mechanism is provided with a first grabbing structure and a second grabbing structure, wherein the two material grabbing locations are respectively located on both sides of the placement station, and the distance between the placement station and any one of the material grabbing locations is equal to the distance between the first grabbing structure and the second grabbing structure. The first grabbing structure is used to grab the face cover from one material grabbing location, and the second grabbing structure is used to grab the label from another material grabbing location. During the assembly process of the face cover and the label, the label needs to be placed at a designated position on the face cover. The double-headed grabbing mechanism moves back and forth between the two material grabbing locations, thereby causing the first grabbing structure and the second grabbing structure to move back and forth between the placement station and the material grabbing location.

[0008] The first grasping structure and the second grasping structure are both located on the double-head grasping structure, so there will be no mutual interference during the working process. When the first grasping structure and the second grasping structure cooperate, when the first grasping structure places the grasped face cover on the placement station, the second grasping structure is in the position of grasping the sign to grasp the sign. When the grasping action of the second grasping structure and the placing action of the first grasping structure are completed, the double-head grasping mechanism starts to move, thereby moving the second grasping structure to the placement station and the first grasping structure to the material grasping position of the face cover, so that the second grasping structure places the sign on the face cover on the placement station, and at the same time, the first grasping structure grasps the face cover.

[0009] Therefore, the double-headed grasping mechanism of the present invention realizes the alternate placement of the face cover and the sign through the first grasping structure and the second grasping structure, ensuring that one face cover corresponds to one sign, and solving the problem of misalignment between the sign and the face cover. In addition, when the double-headed grasping mechanism fails, the first grasping structure and the second grasping structure will stop working synchronously, thus solving the problem that one grasping structure stops working while the other grasping structure is still running.

[0010] And after setting up the double-head grabbing mechanism, the problem of mutual interference between the first grabbing structure and the second grabbing structure is solved. In this case, the efficiency of the first grabbing structure and the second grabbing structure can be greatly improved, and the action from grabbing to combining the sign and the cover can be controlled within 9 seconds. If the grabbing mechanism for the sign and the grabbing mechanism for the cover are independent of each other, the running tracks of the two grabbing mechanisms must be considered, and it is difficult to improve the combination efficiency of the sign and the cover.

[0011] The double-head grasping mechanism is provided with a moving module, and the first grasping structure and the second grasping structure are both connected to the moving module.

[0012] The moving module includes a track and a slide seat, and the first grabbing structure and the second grabbing structure are both connected to the slide seat. When the slide seat slides on the track, the first grabbing structure and the second grabbing structure also move along with the sliding of the slide seat.

[0013] The length and position of the track correspond to the positions of the placement station and two material grabbing locations. When the slide seat slides along one end of the track, the positions of the first grabbing structure and the second grabbing structure correspond to the positions of the placement station and one material grabbing location, respectively.

[0014] The first grasping structure and the second grasping structure are both provided with vacuum suction cups, and the materials supplied from the material grasping position are grasped by vacuum adsorption. Vacuum adsorption enables the double-head grasping mechanism to grasp various types of cover plates and labels, and the vacuum adsorption method can grasp from the upper side of the label plate or the cover plate, and the positions of multiple labels or cover plates will not be grasped at the same time during grasping, so as not to affect the grasping of other labels and cover plates.

[0015] The first gripping structure and the second gripping structure are both provided with a two-axis mechanism, and the vacuum suction cup is provided on the two-axis mechanism, and the vacuum suction cup is moved by the telescopic mechanism. One direction of the two-axis mechanism is the vertical direction, which is used for the lifting and lowering action of the vacuum suction cup. After the vacuum suction cup descends, it performs adsorption or placement action. When the double-head gripping mechanism needs to change position, the vacuum suction cup will rise first to avoid collision with the placed cover, sign or other equipment.

[0016] The moving direction of the double-head gripping mechanism is perpendicular to the plane formed by the two moving directions of the two-axis mechanism. That is, the moving module that realizes the movement of the double-head gripping mechanism and the two-axis mechanism form a three-dimensional coordinate system, thereby realizing the adjustment of the position of the vacuum suction cup in three-dimensional space.

[0017] It also includes a visual mechanism. The first gripping structure and / or the second gripping structure is provided with a visual mechanism, and the visual mechanism is used to monitor the position where the material is placed.

[0018] The two material grabbing places are the sign supply place and the cover supply place respectively. The second grabbing structure corresponds to the sign supply mechanism. The second grabbing structure is provided with a visual mechanism. The visual mechanism is provided on the second grabbing structure for grabbing the sign so that the position of the cover can be determined before the sign is placed, thereby ensuring the accuracy when the sign and the cover are assembled.

[0019] The placement station is provided with a movable transplanting push plate, a pushing structure and a positioning part corresponding to the position of the pushing structure. The positioning part is located in the extension direction of the pushing structure, and the moving direction of the transplanting push plate is perpendicular to the extension direction of the pushing structure. After the first grabbing structure places the face cover, the position of the face cover is usually inaccurate, so a structure for positioning the face cover is provided at the placement station. The transplanting push plate pushes the face cover to move from one side to determine the angle of the face cover and the position in one direction, while the pushing structure and the positioning part are used to fix the position of the face cover in another direction. The directions of the transplanting push plate and the pushing structure are perpendicular to each other, so that the position of the face cover can be determined in a horizontal plane. The position of the face cover on the placement station is adjusted and determined, so that the corresponding coordinates can be accurately reached when the sign is placed, thereby improving the assembly efficiency.

[0020] The present invention has the following beneficial effects:

[0021] The present invention grabs the nameplate and the face cover through a double-head grabbing mechanism. The reciprocating operation of the double-head structure enables the first grabbing structure for grabbing the face cover and the second grabbing structure for grabbing the nameplate to work synchronously without interfering with each other, thereby solving the problem of incorrect pairing of the nameplate and the face cover and improving the assembly efficiency of the nameplate and the face cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the double-head grabbing mechanism of the present invention;

[0025] Figure 3 It is a structural schematic diagram of placing the workstation of the present invention;

[0026] Figure 4 A top view of the sign positioning assembly of the present invention;

[0027] Figure 5 for Figure 4 Sectional view at AA;

[0028] Figure 6 It is a structural schematic diagram of the label printing assembly of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the silo part of the sign of the present invention;

[0030] Figure 8 A cross-sectional view of a silo of the label of the present invention;

[0031] Fig. 9 It is a top view of the silo of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Double-head gripping mechanism; 2. Cover feeding place; 3. Label feeding place; 4. Placement station; 5. Visual mechanism; 101. First gripping mechanism; 102. Second gripping mechanism; 103. Moving module; 104. Double-axis module; 301. Bin; 302. Tray; 303. Guide rail; 304. Lifting mechanism; 305. Lead screw; 306. Guide column; 307. Driving mechanism; 308. Lifting part; 309. Printing device; 311. Opening; 312. Support Support point; 401, second positioning fixture; 402, second pushing structure; 403, transplanting platform; 404, transplanting push plate; 405, second step; 406, cover; 407, first step; 408, second mounting groove; 409, conveying mechanism; 501, first positioning fixture; 502, second groove; 503, positioning groove; 504, first groove; 505, first pushing structure; 506, first mounting groove; 507, flip arm; 508, flip motor. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is clearly and completely described below with reference to the accompanying drawings through specific implementation methods of the embodiments of the present invention.

[0035] See also Figure 1-Figure 9 As shown, the present invention is a gas meter face cover 406 assembly system, including a label supply mechanism, a face cover 406 supply mechanism and a double-head grabbing mechanism 1. The face cover 406 supply mechanism is a material grabbing place for the face cover 406, which is used to provide the face cover 406 to be assembled. The label supply mechanism is a material grabbing place for the label, which is used to submit the label to be assembled. The double-head grabbing mechanism 1 is used to grab the label and the face cover 406 from the label supply mechanism and the face cover 406 supply mechanism, and place the label and the face cover 406 into the downstream assembly process respectively.

[0036] The double-headed grasping mechanism 1 is provided with a first grasping structure, a second grasping structure and a moving module 103, wherein the first grasping structure and the second grasping structure are located on the moving module 103, and the first grasping structure and the second grasping structure are controlled by a moving module 103 to reciprocate. The first grasping structure is used to grasp the face cover 406, and the second grasping structure is used to grasp the sign. The relative distance between the first grasping structure and the second grasping structure is fixed. The sign and the face cover 406 grasped by the double-headed grasping mechanism 1 are placed in a placement station 4, and the placement station 4 is used to realize the assembly of the face cover 406 and the sign.

[0037] The moving module 103 includes a track and a slide seat, and the first gripping structure and the second gripping structure are both connected to the slide seat.

[0038] The placement station 4 is located between the label supply mechanism and the surface cover 406 supply mechanism, the distance between the placement station 4 and the label supply mechanism is equal to the distance between the surface cover 406 supply mechanisms, and the distance between the placement station 4 and the label supply mechanism is equal to the distance between the first gripping structure and the second gripping structure.

[0039] When the second grabbing structure is in the position of the label supply mechanism grabbing the label, the first grabbing structure is located at the position of the placement station 4, and the first grabbing structure is performing the work of placing the cover 406. When the second grabbing structure grabs the label and the first grabbing structure places the cover 406, the first grabbing structure moves to the cover 406 supply mechanism to grab the cover 406, and the second grabbing structure moves to the placement station 4 to place the label.

[0040] When the second grabbing structure places the label, it will directly place the label on the designated position of the face cover 406. After the label is placed, the combination structure of the face cover 406 and the label placed at the placement station 4 can go to the downstream process for subsequent tightening work.

[0041] Therefore, the present invention adopts double-headed grabbing to realize the grabbing of the sign and the face cover 406 respectively, and assembles the sign and the face cover 406 after grabbing them respectively. The double-headed grabbing mechanism 1 can keep the assembly steps of the face cover 406 and the sign completely synchronized, and enables the first grabbing structure and the second grabbing structure to work every time the double-headed mechanism moves. Therefore, the situation of conflict between the operation of the first grabbing structure and the second grabbing structure is avoided. If the first grabbing structure and the second grabbing structure act independently, then it is also necessary to set the coordination action between the first grabbing structure and the second grabbing structure, and it is necessary to continuously debug the error between the two grabbing mechanisms so that the two grabbing mechanisms do not interfere with each other. The debugging of two separate grabbing mechanisms will waste a lot of time and labor costs. However, the present application adopts a double-headed mechanism to grab and assemble the face cover 406 and the sign, directly eliminating the setting and debugging of the coordination of the actions of the two grabbing mechanisms, so that the two grabbing mechanisms can always keep synchronous operation. The problem of coordination accuracy when the two grabbing mechanisms work in an interlaced manner is solved.

[0042] When the double-headed grasping mechanism 1 grasps, vacuum adsorption is used to grasp the label and the surface cover 406. The vacuum adsorption method also enables the double-headed grasping mechanism 1 to grasp various types of gas surface covers 406 and labels, and the grasping process is not limited by the shapes of different types of gas meters.

[0043] For example, in one embodiment, a vacuum suction cup is used to absorb the gas meter cover 406 and the label, so that the cover 406 and the label are moved to the placement station 4 for assembly. The vacuum absorption method can solve the problem of universal grasping of the label and the cover 406. Even if the label and the cover 406 have different shapes and sizes, the vacuum absorption method can still absorb and grasp them.

[0044] The first gripping structure and the second gripping structure are both provided with a two-axis mechanism, and two vacuum suction cups are both provided on the telescopic mechanism of the corresponding gripping mechanism, so that the vacuum suction cups can perform adsorption operations on the sign or cover 406 located below, thereby increasing the adsorption range of the vacuum suction cups.

[0045] In one embodiment, the first gripping structure and the second gripping structure have the same structure, and the two gripping mechanisms are distinguished by their functions, and both gripping mechanisms are structures composed of a two-axis mechanism and a vacuum suction cup. The vacuum suction cup is fixed to the two-axis mechanism, and the two-axis mechanism is fixed to the slider of the moving module 103.

[0046] The two-axis mechanism can facilitate the grabbing of the sign or the cover 406. When the double-head grabbing mechanism 1 moves left and right, the two-axis mechanism is in an upward state to prevent the sign or the cover 406 adsorbed by the vacuum suction cup from colliding with other signs or covers 406. In addition, the two-axis mechanism can adjust the position of the vacuum suction cup so that the position of the vacuum suction cup can be accurately matched with the material mechanism. When there is an error in the position of the vacuum suction cup, the position of the vacuum suction cup can also be corrected by the two-axis mechanism.

[0047] The two-axis mechanism has two moving directions, vertical and horizontal, and the moving direction of the double-head gripping mechanism 1 is perpendicular to the plane formed by the two moving directions of the two-axis mechanism. The combination of the two-axis mechanism and the double-head gripping mechanism 1 is equivalent to forming a three-dimensional coordinate system.

[0048] The vertical movement of the two-axis mechanism is used for the lifting and lowering of the vacuum suction cup, and the horizontal movement of the two-axis mechanism is used to adjust the position of the vacuum suction cup. In the correct design route, the vacuum suction cup only moves along the direction of the double-head gripping mechanism 1 and the vertical direction. When the position of the vacuum suction cup is inaccurate, the position of the vacuum suction cup can be adjusted in the horizontal plane formed by the two-axis mechanism and the double-head gripping mechanism 1.

[0049] Taking the action of the first grasping structure as an example, when the first grasping structure moves to the supply mechanism of the face cover 406, the telescopic mechanism extends downward, the vacuum suction cup absorbs the face cover 406, and then the telescopic mechanism shortens upward. When the second grasping structure also completes the action, the moving module 103 moves to move the first grasping structure to the placement station 4, the telescopic mechanism of the first grasping structure extends downward, the face cover 406 is placed on the placement station 4, and then the telescopic mechanism rises and shortens, thereby completing a round of grasping and placing actions for the face cover 406.

[0050] The double-headed gripping mechanism 1 is also provided with a visual mechanism 5, which is used to position the sign and the cover 406 during assembly, thus achieving real-time monitoring and adjustment of the assembly process. With the cooperation of the visual mechanism 5, the position of the cover 406 can be confirmed first, and then the position of the sign and the cover 406 can be aligned on the horizontal plane through the two-axis mechanism and the double-headed gripping mechanism 1, and then the vacuum suction cup is controlled to descend to place the sign at the corresponding position of the cover 406.

[0051] The visual mechanism 5 is an industrial camera, which is arranged on the second gripping structure and moves with the movement of the second gripping structure. After the second gripping structure places the face cover 406 on the positioning fixture by the first gripping structure, the sign corresponding to the face cover 406 is placed on the designated position of the face cover 406. Before the sign is placed on the face cover 406, the visual mechanism 5 takes a picture of the face cover 406 and transmits the taken image to the controller, which compares the position of the taken image with the set position of the face cover 406, and adjusts the position of the sign according to the compared structure, and finally places the sign on the face cover 406.

[0052] The provision of the visual mechanism 5 further improves the accuracy of the assembly of the sign and the face cover 406 , and avoids the occurrence of misalignment of the assembly positions of the sign and the face cover 406 .

[0053] In one embodiment, the face cover 406 is provided with a structure for positioning the visual mechanism 5, such as a positioning pin. After the visual mechanism 5 takes a picture of the face cover 406, the controller uses the position of the positioning pin on the face cover 406 as a reference, and confirms the position of the face cover 406 by comparing the position of the positioning pin, thereby further confirming the installation position of the sign.

[0054] The label supply mechanism includes a label printing component and a label positioning component. The label printing component is used to print information corresponding to the cover 406 on the label, such as printing a one-dimensional code or a digital number, etc. The label positioning component is used to position the printed label and move the label to a position where the second gripping structure grips it.

[0055] like Figures 6 to 9As shown, the label printing assembly includes a material bin 301, a lifting mechanism 304 and a printing device 309. The material bin 301 and the lifting mechanism 304 are used to supply labels to be printed, and the printing device 309 is used to print corresponding information on the labels. The material bin 301 and the lifting mechanism 304 are located directly below the printing device 309, so that the printing device 309 can directly print the labels at the material outlet of the material supply device.

[0056] The material bin 301 is used to stack the labels to be printed, and the lifting mechanism 304 is used to raise the height of the labels in the material bin 301. As the printing work proceeds, each time a label is printed, one label in the material bin 301 is reduced, and each time one label is reduced, the lifting mechanism 304 raises the height of the labels in the material bin 301, and the height of the labels is the same as the thickness of the labels. This ensures that there are always labels at the outlet of the material bin 301, thereby ensuring that the printing strength of each label remains unchanged, and the printed labels can be taken away by the flipping and positioning mechanism.

[0057] Because the sign is a metal sheet, the silo 301 is provided with a columnar chamber so that the sign can move up and down in the silo 301. And the side wall of the chamber abuts against the edge of the sign, so that the sign cannot move or rotate horizontally in the chamber.

[0058] In one arrangement, the top view of the chamber matches the shape of the sign so that the sign cannot move horizontally within the chamber.

[0059] The lifting mechanism 304 needs to lift the label inside the silo 301 up and down, so the lifting mechanism 304 is provided with a lifting support plate inside the silo 301, and then the lifting support plate can lift the label and move it up and down through the linear mechanism.

[0060] The lifting mechanism 304 includes a lifting portion 308 for lifting, a linear mechanism and a power device, wherein the power device transmits power to the linear mechanism, which is then converted by the linear mechanism into up and down movement of the lifting portion 308 .

[0061] In one embodiment, the lifting portion 308 is a lifting pallet in the shape of a plate, and the lifting pallet lifts the bottom of the stacked signs to move upward.

[0062] In one embodiment, the linear mechanism is a ball screw 305 transmission device, and the lifting tray 302 cooperates with the ball screw 305 transmission device, and the lifting action of the lifting tray is realized by the ball screw 305 transmission device. The screw 305 is driven by a servo motor, and the rotation of the screw 305 can be controlled by using the servo motor.

[0063] The lifting mechanism 304 uses a ball screw 305 transmission device as a linear mechanism. The ball screw 305 transmission device is provided with a guide column 306 parallel to the axis of the screw 305. The guide column 306 is used to fix the direction of the lifting plate to prevent the lifting plate from rotating relative to the screw 305.

[0064] A vertical opening 311 is provided on the side of the silo 301 , and the vertical opening 311 forms a lifting channel for the lifting pallet, so that the lifting pallet can be inserted into the silo 301 , thereby lifting the sign inside the silo 301 .

[0065] In one embodiment, a limiting structure is provided at the bottom of the chamber in the silo 301, and the limiting structure is used to support the corners of the sign so that the sign cannot fall to the bottom of the chamber. This arrangement can create a gap between the sign and the bottom of the chamber, so that the lifting tray 302 can be directly inserted from the side to the bottom of the sign, thereby lifting the sign.

[0066] It also includes a transplanting mechanism, one end of which is connected to the bottom of the ball screw 305 transmission device. The transplanting mechanism is provided with a guide rail 303 and a tray 302, and the tray 302 is slidably connected to the guide rail 303, and the bottom of the silo 301 is fixed on the tray 302. The direction of the guide rail 303 is perpendicular to the axis of the screw 305, and the silo 301 can slide along the direction of the guide rail 303. When the tray 302 carries the silo 301 and slides along the guide rail 303 to the position of the lifting mechanism 304, the lifting support plate of the lifting mechanism 304 is just inserted into the opening 311 on the side of the silo 301. The provision of the transplanting mechanism can control the angle of the silo 301, so that the relative position of the silo 301 and the lifting mechanism 304 can remain stable.

[0067] After all the labels in the silo 301 are taken out, the silo 301 is pulled out along the guide rail 303 , and then the stacked labels are placed into the silo 301 .

[0068] Different gas meter models also result in different shapes of labels, and different types of labels correspond to different shapes of the silo 301. Therefore, the tray 302 of the transfer mechanism can be used to position the silo 301, and the position of the tray 302 is used as a reference when printing. Because the positions of the tray 302 and the silo 301 are fixed, the position of the label in the silo 301 can be known by the position of the tray 302. When the relative coordinate position of the label is determined, the designated position on the label can be printed.

[0069] During the transport operation of the pallet 302 , the material bins 301 of different labels can cooperate with the lifting mechanism 304 , so that the material bins 301 can be quickly replaced.

[0070] The replacement of the bin 301 is usually performed when a different type of label needs to be printed. At this time, the bin 301 needs to be replaced with a bin 301 for placing a corresponding type of label. When the bin 301 needs to be replaced, it is only necessary to slide the empty bin 301 along the guide rail 303, and then install the new bin 301 on the slide rail and slide it to the lifting mechanism 304.

[0071] The printing device 309 is a laser marking machine, which prints corresponding information on the label by laser printing.

[0072] The laser marking machine is arranged on an adjustable bracket, and the position of the laser marking machine is adjusted by the adjustable bracket. The adjustable bracket includes a fixed bracket and an adjusting bracket, the adjusting bracket is provided with a plurality of guide optical axes, and the fixed bracket is provided with a plurality of guide supports that cooperate with the guide optical axes. The axial direction of the guide optical axes is the vertical direction. The guide supports are provided with guide holes in the vertical direction, and cooperate with the guide optical axes through the guide holes.

[0073] With the cooperation of several guide optical axes and guide supports, the adjustment frame can maintain a constant angle when it is raised or lowered.

[0074] In one embodiment, the lifting and lowering of the adjusting frame is achieved by adjusting bolts. A plurality of adjusting bolts are arranged on the fixing seat. The ends of the adjusting bolts abut against the adjusting frame. The adjusting bolts are turned to achieve the lifting and lowering of the adjusting frame.

[0075] The laser marking machine is fixed on the adjusting frame, and the height of the laser marking machine can be changed by changing the height of the adjusting frame.

[0076] The adjusting bolt is used to adjust the height of the laser marking machine, while the guide optical axis and the guide support are used to fix the angle of the laser marking machine.

[0077] The adjustable bracket is also provided with a visual mechanism 5, which is used to detect the printed product of the laser marking machine and take pictures. The visual mechanism 5 and the laser marking machine are connected to the same controller, and the visual mechanism 5 transmits the photographed information to the controller, and the controller compares the photographed information with the printed information of the laser marking machine, so as to determine whether the information printed on the label is correct.

[0078] like Figure 4 and Figure 5 As shown, the label positioning assembly is used to move the printed label to a position suitable for grabbing. In the present invention, the first grabbing structure is used to first place the cover 406 on the placement station 4, and then place the label on the cover 406, so that the cover 406 and the label are assembled.

[0079] First, the cover 406 is placed and the label is connected to the cover 406 from the upper side. First, the position of the cover 406 can be used to position the label when it is placed, thereby improving the accuracy of the position of the cover 406 and the label. When positioning, the cover 406 has more features than the label for comparison and positioning. Secondly, the label is small in size. If the label is set on the lower side, the relative position of the label and the cover 406 will be unstable after placement; in this case, the label is blocked by the cover 406, and it is impossible to directly observe whether the relative position of the cover 406 and the label is correct in the subsequent process.

[0080] The label is located on the inner side of the cover 406, and the edge of the label is connected to the cover 406. The cover 406 is provided with a hole at the position where the label is installed, through which the information printed in the middle of the label can be directly observed. Therefore, when the label is placed on the cover 406, the side of the label with information printed on it faces downward, and the positioning component also has the function of turning the label over.

[0081] The positioning assembly includes a flip arm 507 and a first positioning fixture 501, wherein the first positioning fixture 501 is provided with a first groove 504 for accommodating the flip arm 507, wherein the first groove 504 forms an opening 311 on the top surface and one side surface of the first positioning fixture 501, and the opening 311 on the side surface is used for flipping in and out of the flip arm 507. The flip arm 507 is used for grabbing the label. After grabbing the label, the flip arm 507 flips into the first groove 504.

[0082] The width of the first groove 504 is smaller than the width of the sign, so two sides of the sign will lean against two sides of the notch of the first groove 504. When the sign leans against two sides of the notch of the first groove 504, the sign is flipped 180°.

[0083] The label is placed on the first positioning jig 501 and waits for other processes to take it away. The direction in which the flip arm 507 flips toward the first positioning jig 501 is the positive direction, and the direction in which it flips out of the first positioning jig 501 is the negative direction. After the label on the first positioning jig 501 is taken away, the flip arm 507 flips in the reverse direction and re-absorbs the label, and then flips the next label into the first groove 504 by flipping in the positive direction.

[0084] In one embodiment, the flipping of the flip arm 507 is driven by a flip motor 508, such as a pneumatic swing motor. The pneumatic swing motor rotates in different directions according to the air supply direction of the air pump. The flip arm 507 is connected to the output shaft of the pneumatic swing motor. When the output shaft of the pneumatic swing motor reciprocates, the flip arm 507 also realizes reciprocating swing.

[0085] Similarly, the swing of the flip arm 507 can also be achieved by using a transmission structure such as a cam connecting rod to achieve reciprocating swing.

[0086] In one embodiment, the flip arm 507 uses vacuum adsorption to adsorb the label. For example, a vacuum suction cup is provided at the end of the flip arm 507. After the flip arm 507 flips over to the top of the label to be flipped, the vacuum suction cup starts to adsorb the label, thereby achieving the gripping of the label by the flip arm 507. At this time, the flip arm 507 flips again, and can carry the label to flip to the side of the first positioning fixture 501.

[0087] After the flip arm 507 flips to the first groove 504, the vacuum suction cup stops the adsorption action, so that the label is separated from the flip arm 507, making it easier for the equipment in the downstream process to grab the label.

[0088] In another embodiment, the sign can also be captured by pasting. For example, adhesive is provided at the end of the flip arm 507 so that when the flip arm 507 is flipped to the sign position, the sign can be adhered by the adhesive. In this embodiment, the separation of the sign from the flip arm 507 needs to be achieved by the collision of the sign with the first positioning fixture 501. When the flip arm 507 flips to the first groove 504, the flip arm 507 completely falls into the first groove 504. At this time, the sign cannot enter the first groove 504, so when the sign contacts the first positioning fixture 501, it will be separated from the flip arm 507.

[0089] The method of grabbing the label by glue needs to ensure that the adhesive performance of the glue is stable. Compared with the vacuum suction cup, the glue has the disadvantage of being unstable. If the adhesive performance of the glue decreases, it may cause the flip arm 507 to fail to grab the label or the label to fall off during the flipping of the flip arm 507. If the adhesive performance of the glue is stable, it has the advantage of being simpler than the vacuum suction cup.

[0090] The vacuum suction cup needs to be equipped with a vacuum pump, which provides negative pressure for the vacuum suction cup, so that the vacuum suction cup can absorb and release the sign.

[0091] The first positioning fixture 501 is also provided with a second groove 502 and a positioning groove 503, wherein the second groove 502 is located on the top surface of the first positioning fixture 501. The positioning groove 503 is located at the bottom of the second groove 502, and the shape of the positioning groove 503 matches the shape of the label.

[0092] The first groove 504 overlaps with the middle of the positioning groove 503 , so that when the flip arm 507 flips into the first groove 504 , the label can rest on the bottom of the positioning groove 503 .

[0093] The second groove 502 is in the shape of a quadrilateral. First pushing structures 505 are disposed on two adjacent sides of the second groove 502 . The pushing directions of the first pushing structures 505 are both toward the positioning groove 503 .

[0094] When the flip arm 507 flips over the superimposed sign, the collision between the flip arm 507 and the sign is likely to cause the sign to shift. Therefore, it is difficult to directly and accurately place the sign into the positioning groove 503. Therefore, the flip arm 507 can be controlled to grab a corner of the sign, so that a part of the sign falls into the second groove 502, and the sign falls into the second groove 502 near the two first pushing structures 505. After that, the two first pushing structures 505 can push the sign to move toward the positioning groove 503, and finally make the sign completely fall into the positioning groove 503, thereby completing the positioning of the sign.

[0095] The first positioning fixture 501 is provided with a first mounting groove 506, and the two first pushing structures 505 are both located in the first mounting groove 506. When the two first pushing structures 505 are located in the first mounting groove 506, the top of the first pushing structure 505 is lower than the top surface height of the first positioning fixture 501. This arrangement can prevent the first pushing structure 505 from protruding from the top of the first positioning fixture 501, thereby preventing the first pushing structure 505 from blocking other devices.

[0096] Preferably, the bottom height of the first mounting groove 506 is lower than the bottom height of the positioning groove 503, and the first mounting groove 506 coincides with a side wall of the positioning groove 503, so that the first pushing structure 505 will contact the side wall of the first mounting groove 506 after pushing the sign into the positioning groove 503, so that the first pushing structure 505 will stop pushing under the blocking effect of the side wall of the first mounting groove 506 and will not continue to push the sign, thereby achieving the effect of avoiding pushing the sign out of the positioning groove 503, and also avoiding deformation of the sign caused by continuous pushing of the first pushing structure 505, thereby achieving the effect of preventing the sign from being damaged.

[0097] In one embodiment, the first pushing structure 505 is a cylinder, and the pushing effect on the sign is achieved by extending the cylinder.

[0098] In other embodiments, the first propulsion structure 505 may also adopt a telescopic mechanism such as an electric cylinder or a worm gear, as long as it can achieve a propulsion effect.

[0099] The advantages of using a gas cylinder are that it is cheap and not easy to be damaged. Even if the gas cylinder abuts against the side wall of the first mounting groove 506 when extended, continuous pressurization of the gas cylinder will not cause damage to the gas cylinder. In contrast, when the electric structure abuts against the side wall of the first mounting groove 506, the circuit may be overloaded and damaged.

[0100] like Figure 3 As shown, the placement station 4 is used to position the face cover 406 so that the sign can be accurately placed at the designated position of the face cover 406 .

[0101] The placement station 4 includes a second positioning fixture 401, which is provided with a transplanting slide for moving the cover 406 and a second mounting groove 408 for accommodating the transplanting slide. The two ends of the second mounting groove 408 pass through the two sides of the second positioning fixture 401, and the moving direction of the transplanting slide is the same as the direction of the second mounting groove 408.

[0102] Along the moving direction of the transplanting slide, the second positioning fixture 401 is provided with a first step 407 parallel to the transplanting slide and a second step 405 parallel to the transplanting slide.

[0103] The first step 407 and the second step 405 are perpendicular to each other, and the first step 407 and the second step 405 are used to limit the position of the surface cover 406 .

[0104] The transplanting slide is provided with a transplanting push plate 404, the height of which is higher than the surface of the second positioning fixture 401, so that the transplanting push plate 404 protrudes from the bottom of the second mounting groove 408. The transplanting push plate 404 is used to push the surface cover 406 to move from the side.

[0105] The plate surface of the transplanting push plate 404 is perpendicular to the moving direction of the transplanting slide, so that the plate surface of the transplanting push plate 404 can fit the side surface of the face cover 406. When the side surface of the face cover 406 fits the plate surface of the transplanting push plate 404, the plate surface of the face cover 406 also reaches a specified angle. It can be seen that under the pushing action of the transplanting push plate 404, the angle direction of the face cover 406 is adjusted to achieve the effect of angular positioning of the face cover 406.

[0106] The second positioning fixture 401 is also provided with a second pushing structure 402 , which is respectively located on both sides of the second mounting groove 408 with the first step 407 , and the pushing direction of the second pushing structure 402 is toward the first step 407 , and the pushing direction of the second pushing structure 402 is perpendicular to the first step 407 .

[0107] When the cover 406 passes in front of the second pushing structure 402, the second pushing structure 402 pushes forward, so that the cover 406 moves toward the first step 407, so that one side of the cover 406 can fit with the side of the first step 407. Thus, the cover 406 is positioned in the pushing direction of the second pushing structure 402, so that the cover 406 fits with the first step 407.

[0108] Along with the movement of transplanting slide, face cover 406 always fits with transplanting push plate 404, and when transplanting slide stops, the movement of face cover 406 also stops thereupon. Therefore, by controlling the stop position of transplanting slide, the position of face cover 406 in the moving direction of transplanting slide can be positioned.

[0109] The sliding direction of the transplanting slide is perpendicular to the pushing direction of the second pushing structure 402. Therefore, the sliding direction of the transplanting slide and the pushing direction of the pushing joint are equivalent to forming a rectangular coordinate system in the horizontal plane. When the cover 406 is positioned under the action of the second pushing structure 402 of the transplanting slide, it is also positioned in the horizontal plane.

[0110] The movement of the transplanting slide is driven by a linear mechanism.

[0111] In one embodiment, the linear mechanism is a servo electric cylinder, which can accurately control the moving distance of the transplanting push plate 404 , thereby controlling the position of the surface cover 406 pushed by the transplanting push plate 404 .

[0112] In other embodiments, the linear mechanism may also be driven by a ball screw 305 structure in conjunction with a motor.

[0113] The second pushing structure 402 is also a linear mechanism, and is used to cooperate with the first step 407 to position the cover 406 based on the first step 407. The second pushing structure 402 pushes the cover 406 to abut against the side of the first step 407.

[0114] In one embodiment, the second pushing structure 402 uses a cylinder, the thrust of the cylinder can be controlled by controlling the air pressure, and the thrust of the cylinder is smaller, so that when the cylinder cooperates with the first step 407 to clamp the surface cover 406, the surface cover 406 will not be damaged due to excessive pressure.

[0115] The second pushing structure 402 adopts a cylinder, which can make the second pushing structure 402 applicable to various types of gas meter surface covers 406. When the cylinder encounters gas surface covers 406 of different sizes, the stroke of the cylinder will also be different according to the size of the surface cover 406.

[0116] Therefore, the second pushing structure 402 not only has the function of positioning the correct position of the face cover 406. With the cooperation of the first step 407, the second pushing structure 402 also has the function of fixing the face cover 406. The second pushing structure 402 is located on both sides of the face cover 406 with the first step 407. When the second pushing structure 402 is extended, it can clamp the face cover 406 with the first step 407, thereby achieving the effect of positioning and fixing the face cover 406.

[0117] The clamping and fixing effect of the second pushing structure 402 on the face cover 406 at the first step 407 is performed after the transplanting slide stops moving, so as to prevent the clamping effect of the second pushing structure 402 and the first step 407 from hindering the movement of the transplanting slide.

[0118] The second pushing structure 402 positions and fixes the surface cover 406, so as to facilitate the processing of the surface cover 406 by the processing equipment and prevent the surface cover 406 from moving during the processing.

[0119] One side of the second positioning fixture 401 is docked with a conveying mechanism 409 , and the conveying mechanism 409 is located in the moving direction of the transplanting slide.

[0120] After the surface cover 406 is positioned and processed, the surface cover 406 can be pushed to the conveying mechanism 409 by the pushing action of the transfer push plate 404, so that the conveying mechanism 409 conveys the surface cover 406 to the downstream process.

[0121] The second step 405 can be used as a reference coordinate when placing the face cover 406, so that the face cover 406 can be placed on the side provided with the second pushing structure 402. When the face cover 406 is placed, the transplanting push plate 404 moves to a position flush with the second step 405. After the face cover 406 is placed, the transplanting push plate 404 moves toward the face cover 406, so that the side of the transplanting push plate 404 is in contact with the side of the face cover 406, and the position of the face cover 406 is positioned by the side of the transplanting push plate 404.

[0122] The cover 406 feeding mechanism is used to supply the cover 406 to the double-head grasping mechanism 1. The cover 406 feeding mechanism is provided with a rotatable wheel, and the wheel is provided with a plurality of groups of limit rods, and each group of limit rods is used to place the cover 406. When the first grasping structure finishes grasping the cover 406 in a group of limit rods, the wheel rotates to convey the next group of cover 406 to the grasping range of the first grasping structure. The cover 406 supply mechanism continuously supplies the cover 406 to the first grasping structure by rotating.

[0123] Each set of the limit rods is provided with a lifting structure, which is used to lift the cover 406 in the restricted area of ​​each set of limit rods upward, so that the topmost cover 406 is located within the grasping range of the first grasping structure. The lifting structure can be, for example, a structure in which a motor drives a rack, and a motor drives the rack to move up and down to realize the lifting action of the cover 406.

Claims

1. A gas meter cover assembly system, characterized in that: It includes a double-head grabbing mechanism (1), a label supply machine The double-headed grabbing mechanism (1) is provided with a first grabbing structure and a second grabbing structure. The two material grabbing locations are respectively located on both sides of the placement station (4). The distance between the placement station (4) and any one of the material grabbing locations is equal to the distance between the first grabbing structure and the second grabbing structure. The two material grabbing locations are respectively a label supply location and a surface cover (406) supply location. The second grabbing structure corresponds to the label supply mechanism. The second grabbing structure A visual mechanism (5) is provided, the label supply mechanism includes a label printing component and a label positioning component, the label printing component includes a silo (301), a lifting mechanism (304) and a printing device (309), the printing device (309) is a laser marking machine, the laser marking machine is arranged on an adjustable bracket, the adjustable bracket includes a fixed bracket and an adjustment bracket, the adjustable bracket is also provided with a visual mechanism (5), the visual mechanism (5) is used to detect the printed product of the laser marking machine for shooting, the visual mechanism (5) and the laser marking machine are connected to the same controller, and the visual mechanism (5) ) transmits the photographed information to the controller, and the controller compares the photographed information with the printed information of the laser marking machine, thereby determining whether the information printed on the label is correct; the label positioning assembly comprises a flip arm (507) and a first positioning fixture (501), the first positioning fixture (501) is provided with a first groove (504) for accommodating the flip arm (507), the first groove (504) forms openings on the top surface and one side surface of the first positioning fixture (501), the side opening is used for flipping the flip arm (507) in and out, the flip arm (507) is used to grab the label, After grabbing the label, the flip arm (507) flips into the first groove (504). The width of the first groove (504) is smaller than the width of the label, so the two sides of the label will rest on the two sides of the notch of the first groove (504). The flip direction of the flip arm (507) toward the first positioning fixture (501) is the positive direction, and the direction of flipping out of the first positioning fixture (501) is the negative direction. After the label on the first positioning fixture (501) is removed, the flip arm (507) flips in the opposite direction and re-absorbs the label, and then flips the next label into the first groove (504) by flipping in the positive direction.

2. A gas meter cover assembly system according to claim 1, characterized in that: The double-head grasping mechanism (1) is provided with a movable module (103), and the first grasping structure and the second grasping structure are both connected to the movable module (103).

3. A gas meter cover assembly system according to claim 2, characterized in that: The moving module (103) comprises a track and a slide seat, and the first gripping structure and the second gripping structure are both connected to the slide seat.

4. A gas meter cover assembly system according to claim 1, characterized in that: The first grasping structure and the second grasping structure are both provided with vacuum suction cups, and the materials supplied at the material grasping position are grasped by vacuum adsorption.

5. A gas meter cover assembly system according to claim 4, characterized in that: The first grasping structure and the second grasping structure are both provided with a two-axis mechanism, the vacuum suction cup is arranged on the two-axis mechanism, and the two vacuum suction cups are both arranged on the telescopic mechanism of the corresponding grasping mechanism, and the vacuum suction cup is moved by the telescopic mechanism.

6. A gas meter cover assembly system according to claim 5, characterized in that: The moving direction of the double-head grasping mechanism (1) is perpendicular to the plane formed by the two moving directions of the two-axis mechanism.

7. A gas meter cover assembly system according to claim 1, characterized in that: It also comprises a visual mechanism (5), wherein the first gripping structure is provided with the visual mechanism (5), and the visual mechanism (5) is used to monitor the position where the material is placed.

8. A gas meter cover assembly system according to claim 1, characterized in that: The placement station (4) is provided with a movable transplanting push plate (404), a pushing structure and a positioning portion corresponding to the position of the pushing structure, the positioning portion is located in the extension direction of the pushing structure, and the moving direction of the transplanting push plate (404) is perpendicular to the extension direction of the pushing structure.

9. A gas meter cover assembly system according to claim 8, characterized in that: The pushing structure is a cylinder.

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