Positioning device

Abstract

The utility model relates to the technical field of large workpiece production, in particular to a positioning device which is used for precisely positioning a target piece and comprises a positioning frame, a positioning guide assembly and a correction assembly. The positioning and guiding assembly is arranged on the positioning frame and used for guiding and positioning a target piece placed on the positioning frame; the correction assembly is arranged on the positioning frame or beside the positioning frame and used for automatically correcting the position of the target piece placed on the positioning frame. The positioning device provided by the utility model has high positioning precision on the target piece, and can facilitate the safe carrying of the subsequent target piece and the improvement of the carrying efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of large workpiece production, in particular to a positioning device. Background Art

[0002] With the widespread application of die-casting technology in the manufacture of large-size parts, large-scale machining has become indispensable; in this context, how to efficiently load and unload materials has become a difficult problem that needs to be solved urgently; currently, many parts manufacturers still rely on manual loading and unloading operations; however, for large and heavy one-piece castings, manual handling becomes impractical during mass production, and automated equipment, such as AGV carts, must be used to complete the handling work.

[0003] During this process, large castings usually need to be placed in special tooling, such as a material frame, to ensure their precise position and correct orientation. However, when automated equipment is responsible for handling and placing these material frames, it is often difficult to achieve the required accuracy, resulting in subsequent failures in the automatic placement of large castings into the material frame or position deviations, which have to be adjusted manually, which not only reduces the handling efficiency, but may also cause the automated equipment to collide with the material frame or large castings due to inaccurate positioning, causing damage; therefore, it is particularly urgent to develop a device that can accurately position the material frame or large castings. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a positioning device with high positioning accuracy, which can facilitate the safe transportation of subsequent target parts and improve the transportation efficiency.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a positioning device for accurately positioning a target part, the positioning device comprising:

[0006] Positioning frame;

[0007] A positioning guide assembly is provided on the positioning frame and is used for guiding and positioning the target part when it is placed on the positioning frame;

[0008] The correction component is arranged on or beside the positioning frame, and is used for automatically correcting the position of the target part that has been placed on the positioning frame.

[0009] In one embodiment of the utility model, a detection mechanism is provided on or beside the positioning frame, the detection mechanism is configured to be controllably connected to a conveying unit that conveys the target part, and the detection mechanism is used to detect the direction and position of the target part.

[0010] In one embodiment of the utility model, the positioning guide assembly includes a first guide portion, a second positioning guide portion and a third positioning portion;

[0011] The first guide portion is used for guiding the target part when it enters the positioning frame and moves along the first direction; the second positioning guide portion is used for vertical guidance and second direction limitation of the target part falling toward the positioning frame, and the third positioning portion is used for vertical support and limitation of the target part on the positioning frame, wherein the first direction intersects with the second direction.

[0012] In an embodiment of the present invention, at least one of the first guide portion, the second positioning guide portion and the third positioning portion is a roller group capable of guiding and / or positioning.

[0013] In an embodiment of the present invention, one end of the positioning frame along the first direction is an open structure.

[0014] In one embodiment of the present invention, the calibration component comprises:

[0015] A positioning reference portion, arranged at one end of the positioning frame along a first direction;

[0016] The correction drive assembly is arranged beside the positioning reference portion, and the correction drive assembly is used to drive the target part to move to the positioning reference portion.

[0017] In one embodiment of the utility model, the target part includes a material frame and a tray located below the material frame;

[0018] The detection mechanism includes a tray position detection unit for detecting whether the tray is in place, a material frame direction detection unit for detecting the orientation of the material frame, and a material frame position detection unit for detecting the position of the material frame.

[0019] In one embodiment of the present utility model, the correction drive assembly includes:

[0020] Hinge support;

[0021] A cantilever, one end of which is rotatably arranged around the hinge support and the other end of which is cantilevered;

[0022] A driving assembly is used to drive the cantilever to switch between a horizontal state and an inclined state. The driving assembly is configured to drive the cantilever to rotate around the hinge support so that the target part on the cantilever moves toward the positioning reference part.

[0023] In one embodiment of the utility model, the driving assembly includes

[0024] A telescopic drive member, including a telescopic rod;

[0025] A first articulated arm, articulatedly connected to the telescopic rod;

[0026] The second articulated arm has one end articulated to the first articulated arm and the other end articulated to the articulated support, and one end of the cantilever is fixedly connected to the second articulated arm.

[0027] In an embodiment of the present invention, limiting portions are respectively provided on both sides of the end of the first articulated arm along a direction perpendicular to the extension and retraction direction of the telescopic rod, and the distance between the two limiting portions is exactly equal to the length of the first articulated arm.

[0028] In summary, the utility model sets a positioning frame, a positioning guide assembly and a correction assembly. The positioning guide assembly and the correction assembly are installed on the positioning frame. The positioning guide assembly is mainly used for coarse positioning guidance or partial direction guidance and limitation when the target part is placed on the positioning frame. The correction assembly is used to correct the position of the target part that has been placed on the positioning frame. Through the cooperation of the positioning guide assembly and the correction assembly, the position of the target part on the positioning frame is made more precise, avoiding or reducing position deviation, thereby improving the safety and efficiency of subsequent handling of the target part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a schematic structural diagram of a positioning device according to an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the target component structure involved in one embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of a positioning guide assembly according to an embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of a detection mechanism according to an embodiment of the utility model;

[0034] Figure 5 This is a schematic diagram of the structure of a correction component according to an embodiment of the utility model;

[0035] Component number explanation: positioning frame 1, sub-bracket 11, limiting bracket 12, positioning guide assembly 2, first guide part 23, coarse guide part 230, first roller 231, second positioning guide part 21, second roller 211, third positioning part 22, third roller 221, correction assembly 3, positioning reference part 31, correction drive assembly 32, hinge support 321, cantilever 322, drive assembly 323, telescopic rod 3231, first articulated arm 3232, second articulated arm 3233, limiting part 3234, detection mechanism 4, tray position detection unit 41, material frame direction detection unit 42, material frame position detection unit 43, target part 5, material frame 51, tray 52, bottom side part 521. DETAILED DESCRIPTION

[0036] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0037] See also Figures 1 to 5 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0038] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.

[0039] In this case, the first direction is the X direction in each drawing, the second direction is the Y direction in each drawing, and the third direction is the Z direction in each drawing, wherein the third direction generally refers to the vertical direction, and the first direction and the second direction generally refer to the first direction and the second direction on the same horizontal plane.

[0040] See also Figure 1-2 , the utility model provides a positioning device for accurately positioning a target part 5, the positioning device comprises a positioning frame 1, a positioning guide assembly 2 and a correction assembly 3;

[0041] The positioning guide assembly 2 is disposed on the positioning frame 1 and is used for guiding and positioning the target part 5 placed on the positioning frame 1;

[0042] The correction component 3 is disposed on or beside the positioning frame 1 , and is used to automatically correct the position of the target part 5 that has been placed on the positioning frame 1 .

[0043] It should be noted that the first direction is the direction in which the target part 5 is transported to the positioning device by an automated device such as an AGV (automatic guided vehicle). The positioning frame 1 includes two sub-brackets 11 arranged in parallel along the first direction and a limit bracket 12 arranged at one end of the two sub-brackets 11. The correction component 3 is arranged at the limit bracket 12. The positioning guide component 2 is detachably connected to the positioning frame 1 or is arranged in an integral manner. When the positioning guide component 2 is detachably connected to the positioning frame 1, it is convenient to adjust or correct the position of the positioning guide component 2. The positioning guide component 2 is mainly used for rough positioning guidance or fine guidance and fine limiting in some directions when the target part 5 is placed on the positioning frame 1. The correction component 3 is used to correct the position of the target part 5 that has been placed on the positioning frame 1, so that the position of the target part 5 on the positioning frame 1 is more accurate. Through the cooperation of the positioning guide component 2 and the correction component 3, the position of the target part 5 placed on the positioning frame 1 is more accurate, avoiding or reducing position deviation, thereby improving the safety and efficiency of subsequent transportation of the target part 5. The target part 5 in this case can be a material frame 51, or a material frame 51 loaded with large castings or a large casting or a tray 52 loaded with a material frame 51. Large castings such as automobile body parts, and the material frame 51 and large body parts precisely placed on the positioning frame 1 for positioning large body parts can facilitate other processing equipment to process the large body parts, such as assembling screws or welding, thereby further improving the production, processing and handling efficiency of the target part 5 and the safety of production, processing and handling, and avoiding damage caused by collision between automated equipment and the target part 5.

[0044] As an optional embodiment of this case, please refer to Figure 1 , 4 A detection mechanism 4 is provided on or beside the positioning frame 1 , and the detection mechanism 4 is configured to be controllably connected to a conveying unit that conveys the target part 5 , and the detection mechanism 4 is used to detect the direction and position of the target part 5 .

[0045] Furthermore, the detection mechanism 4 is electrically or wirelessly connected to a conveying unit (such as an AGV trolley) that conveys the target part 5. When the conveying unit conveys the target part 5 to the positioning frame 1, the detection mechanism 4 detects whether the position of the target part 5 is in place. When the target part 5 is in place, the detection mechanism 4 will feed back the detection result to the conveying unit, and the conveying unit will place the target part 5 on the positioning frame 1. When the position of the target part 5 is incorrect, the conveying unit will continue to move and adjust the position of the target part 5 so that the target part 5 can fall smoothly and correctly into the corresponding position on the positioning frame 1; the detection mechanism 4 is also used to detect the orientation of the target part 5. When the orientation of the target part 5 is incorrect, the detection mechanism 4 can either feed back the information to the conveying unit so that the conveying unit adjusts the orientation of the target part 5 or moves the target part 5 away, or the detection mechanism 4 is electrically connected to an alarm. When the orientation of the target part 5 is incorrect, an alarm is sounded through the alarm, so that manual processing is performed.

[0046] The detection mechanism 4 is a mechanism that meets the use requirements, such as a three-dimensional visual system or a two-dimensional visual system or a sensor system or a coordinate measurement system. For example, a three-dimensional visual system is combined with multiple cameras or laser scanning devices, and the three-dimensional visual system can obtain the three-dimensional information of the target part 5; for example, a two-dimensional visual system usually uses a single camera to capture the plane image of the target part 5, and can determine the position and direction of the target part 5 through image processing technology, such as edge detection, pattern recognition, etc.; for example, a laser displacement sensor measures the distance between the sensor and the target part 5 by emitting laser and receiving its reflected light, and the position and direction of the target part 5 can be calculated through multi-point measurement. For example, a photoelectric sensor can use the reflection or occlusion of light to determine whether the target part 5 exists or not, as well as its approximate position. For example, a coordinate measuring machine measures the three-dimensional coordinates of the surface points of the target part 5 by contact or non-contact, so as to obtain the precise position and shape of the target part 5; for example, the model of the detection mechanism 4 for detecting the proximity of the material frame 51 and the tray 52 can be Bi15-M30-AP6X-H1141.

[0047] As an optional embodiment of this case, please refer to Figure 1 , 3 , the positioning guide assembly 2 includes a first guide portion 23, a second positioning guide portion 21 and a third positioning portion 22;

[0048] The first guide portion 23 is used for guiding the target part when it enters the positioning frame 1 and moves along the first direction. The second positioning guide portion 21 is used for vertical guidance and second direction limitation of the target part 5 falling toward the positioning frame 1. The third positioning portion 22 is used for vertical support and limitation of the target part 5 on the positioning frame 1. The second direction and the first direction are both horizontal directions, and the first direction intersects with the second direction.

[0049] It should be noted that when the conveying unit drives the target part 5 into the area where the positioning frame 1 is located, the first guide portion 23 is used to guide the target part 5 when it enters the positioning frame 1 and moves along the first direction. The end of the first guide portion 23 away from the correction component 3 is a rough guide portion 230. The rough guide portions 230 respectively arranged on the two sub-brackets 11 form an eight-shaped open structure, so as to facilitate the initial rough guidance of the target part 5 along the first direction when the conveying unit conveys the target part 5 into the positioning frame 1; when the conveying unit arrives at the positioning frame 1 and is ready to put the target part 5 into the positioning frame 1, when the target part 5 falls into the positioning frame When the target part 5 is on the positioning frame 1, the second positioning guide portion 21 is used for vertical guidance of the target part 5 and for limiting the position of the target part 5 in the second direction, and the second direction is generally the second direction in the horizontal direction; the first direction intersects with the second direction, for example, the first direction and the second direction are vertically arranged; the third positioning portion 22 is mainly used for vertical support of the target part 5 on the positioning frame 1; when the target part 5 is completely placed on the positioning frame 1, the correction component 3 will adjust the position of the target part 5 in the first direction on the positioning frame 1, and it should be understood that the correction component 3 can also adjust the position of the target part 5 in other directions on the positioning frame 1.

[0050] As an optional embodiment of this case, please refer to Figure 1 , 3 At least one of the first guide portion 23, the second positioning guide portion 21 and the third positioning portion 22 is a roller group capable of guiding and / or positioning.

[0051] It should be noted that each of the roller groups has at least two rollers, and at least two rollers in the roller group are arranged at intervals along the first direction. At least two of the roller groups are respectively arranged on both sides of the positioning frame 1 along the second direction, that is, the roller groups are arranged on two parallel sub-brackets 11 along the second direction, and the rollers on the two parallel sub-brackets 11 are generally arranged symmetrically; at the same time, the roller group can also be replaced by a ball wheel group. Whether the roller group is used for guiding or positioning, it can reduce friction, so that the target part 5 can move more smoothly along the predetermined path, reduce friction and improve transportation efficiency.

[0052] The first guide portion 23 of this case adopts the setting of a roller group, which can guide the target part 5 entering the positioning frame 1 along the first direction, and the guiding accuracy of the remaining part of the first guide portion 23 away from the rough guide portion 230 is greater than the guiding accuracy of the rough guide portion 230. In the roller group of the first guide portion 23, the two first rollers 231 respectively located on the two sub-brackets 11 are in the process of guiding the target part 5 to move along the first direction. Since the first rollers 231 can rotate in coordination with the movement of the target part 5, the friction between the first guide portion 23 and the target part 5 can be reduced, so that the target part 5 can move more smoothly along the first direction.

[0053] In a group of roller groups of the second positioning guide portion 21, at least two second rollers 211 of the roller group are symmetrically arranged on the two sub-brackets 11 respectively; the axial directions of the two second rollers 211 are arranged parallel to the first direction, and the upper halves of the two second rollers 211 that are close to each other form an entrance similar to an inverted figure eight. When the target part 5 falls between the two second rollers 211, as the adjacent circumferential surfaces of one side of the two second rollers 211 roll along the side wall of the target part 5, the target part 5 falls into the positioning frame 1, and the second positioning guide portion 21 plays a role of high-precision vertical guidance, reducing the possibility of deviation. When the target part 5 falls into the positioning frame 1 and the bottom abuts against the third positioning portion 22, the two symmetrical second rollers 211 can also limit the target part 5 in the second direction.

[0054] The third positioning part 22 of the present case adopts the setting of a roller group. Compared with the traditional sliding support, the roller group adopts rolling friction, which can significantly reduce the wear caused by friction, reduce the frequency of maintenance and wear costs, and extend the service life of the equipment; when the roller group is used as a support for the target part 5 in the vertical direction, when the target part 5 needs to be moved along the first direction for precise position adjustment, since the roller group serves as a support, the target part 5 can be moved very conveniently, saving time and effort.

[0055] Furthermore, the first guide portion 23 includes a first bracket and a first roller 231 mounted on the first bracket, and the axial direction of the first roller 231 is parallel to the vertical direction.

[0056] Furthermore, the second positioning guide portion 21 includes a second bracket and a second roller 211 mounted on the second bracket, the axial direction of the second roller 211 is parallel to the first direction, and the second direction and the first direction are generally horizontal directions.

[0057] Furthermore, the third positioning portion 22 includes a third bracket and a third roller 221 installed on the third bracket, the axial direction of the third roller 221 is set parallel to the second direction, and the third roller 221 is also used to roll and support the bottom of the tray 52 on the positioning frame 1, for example, to support and limit the bottom side 521 of the tray 52.

[0058] Furthermore, the first guide portion 23, the second positioning guide portion 21 and the third positioning portion 22 are respectively arranged on both sides of the positioning frame 1 along the first direction, that is, the two sub-brackets 11 are provided with the first guide portion 23, the second positioning guide portion 21 and the third positioning portion 22 along the first direction.

[0059] Further, the first guide portion 23, the second positioning guide portion 21 and the third positioning portion 22 are arranged at intervals on each of the sub-brackets 11 along the first direction, and the interval distance can be uniform, which can be selected and set according to actual needs. Among them, on each of the sub-brackets 11, there is at least one second positioning guide portion 21 arranged between two adjacent first guide portions 23 along the first direction, at least one first guide portion 23 is located between two adjacent second positioning guide portions 21, at least one third positioning portion 22 is located between two first guide portions 23, and at least one third positioning portion 22 is located between two second guide portions 21. In the third direction of each of the sub-brackets 11, the highest point of the first guide portion 23 is usually higher than the highest point of the second positioning guide portion 21, and the heights of the first guide portion 23 and the second positioning guide portion 21 are both higher than the height of the third positioning portion 22, so that the first guide portion 23, the second positioning guide portion 21 and the third positioning portion 22 can guide or position the target part 5 in a specific order, realizing the change from rough guidance / positioning to fine guidance / positioning.

[0060] As an optional embodiment of this case, please refer to Figure 1 One end of the positioning frame 1 along the first direction is an open structure, which avoids the target part 5 from having to rely entirely on falling from the vertical direction when moving to the area where the positioning frame 1 is located. This is time-consuming and labor-intensive, and the required conveying unit must have a larger structural size, which requires a higher cost. One end of the positioning frame 1 is an open structure, which can facilitate the conveying unit to directly enter the positioning frame 1 from the horizontal plane where the positioning frame 1 is placed, which is convenient for the conveying unit to be transported, is conducive to the simplification of the overall structure, and is also conducive to reducing the overall cost.

[0061] As an optional embodiment of this case, please refer to Figure 4 , the correction component 3 includes a positioning reference part 31 and a correction drive component 32; the positioning reference part 31 is arranged at one end of the positioning frame 1 along the first direction, that is, arranged on the limiting bracket 12;

[0062] The correction driving assembly 32 is disposed beside the positioning reference portion 31 , and the correction driving assembly 32 is used to drive the target part 5 to move to the positioning reference portion 31 .

[0063] It should be noted that, when there is only one positioning reference portion 31, the positioning reference portion 31 should have sufficient length and area to realize the positioning of one side of the target part 5. Of course, in order to save costs, the positioning reference portion 31 can also be provided with at least two, and each positioning reference portion 31 can be made into a small component. The positioning reference portion 31 is used to position the target part 5 on the positioning frame 1 at one end along the first direction; after the target part 5 is placed on the positioning frame 1, the target part 5 is moved by the correction drive assembly 32, so that the target part 5 moves toward the positioning reference portion 31, thereby realizing the precise positioning of the target part 5.

[0064] As an optional embodiment of this case, please refer to Figure 2 , 4 , the target part 5 includes a material frame 51 and a tray 52 located below the material frame 51;

[0065] The detection mechanism 4 includes a tray position detection unit 41 for detecting whether the tray 52 is in place, a material frame direction detection unit 42 for detecting the orientation of the material frame 51 , and a material frame position detection unit 43 for detecting the position of the material frame 51 .

[0066] It should be noted that some large castings need to be precisely positioned by the material frame 51 to maintain the predetermined precise posture of the large casting; for example, the material frame 51 can provide necessary support for the large casting to prevent deformation or damage caused by its own weight or external force during transportation; the precise material frame 51 can ensure that the casting maintains the correct position and direction during transportation and subsequent processing, thereby ensuring the accuracy of the size; at the same time, the material frame 51 can form a protective layer around the casting to avoid damage caused by impact or friction during transportation; the use of the material frame 51 can conveniently connect the casting to the handling equipment (such as a crane or an AGV trolley) to improve the safety, reliability and efficiency of the handling work; and some large castings need to pay special attention to the control of thermal balance and shrinkage rate during the casting process. The use of the material frame 51 helps to maintain the stability of the casting during the cooling process and reduce internal stress and deformation. In short, in order to physically protect the workpiece, improve handling efficiency, ensure the quality of the casting, adapt to different handling environments, etc., it is necessary to use the material frame 51 at certain times. The AGV trolley generally needs to use a pallet 52 when transporting the material frame 51, mainly because the pallet 52 can provide stability and improve the transportation efficiency; for example, the pallet 52 can provide a stable foundation, so that the material frame 51 remains stable during the transportation process, avoiding sliding or overturning due to uneven road conditions or changes in acceleration. By placing the material frame 51 on the pallet 52, the integrity of the entire loading system is enhanced, which is beneficial to the transportation operation of the AGV trolley, especially when handling heavy or large castings. The use of pallets 52 can simplify the loading and unloading process. Many pallets 52 are designed to be directly docked with the AGV trolley to achieve rapid replacement; for example, some pallets 52 are equipped with RFID (smart tags) or other smart tags, which can realize automatic identification and tracking, thereby facilitating rapid identification by the detection mechanism 4.

[0067] When the detection mechanism 4 is working, when the pallet position detection unit 41 detects that the pallet 52 on the AGV trolley has arrived in the positioning frame 1, the bottom of the pallet 52 and the material frame 51 are slightly higher than the upper part of the positioning frame 1, and the pallet position detection unit 41 and / or the material frame direction detection unit 42 and / or the material frame position detection unit 43 transmit the detected information back to the control system connected to the AGV trolley control or directly to the control system of the AGV trolley. When the position and / or direction are accurate, the AGV trolley lowers the height of the pallet 52 so that the pallet 52 falls on the third positioning part 22 after being positioned and guided by the second positioning guide part 21. At this time, the correction component 3 will accurately position the pallet 52 and the material frame 51 placed on the positioning frame 1. It should be understood that when the material frame direction detection unit 42 detects that the direction of the material frame 51 is incorrect, the material frame 51 can be adjusted by automated equipment, such as turning the AGV trolley around, or it can be adjusted manually. The material frame position detection unit 43 can also identify the type of the material frame 51 to avoid the material frame 51 being of a wrong type. When the material frame 51 is of a wrong type, manual adjustment can be performed in the form of an alarm.

[0068] As an optional embodiment of this case, please refer to Figure 4-5 The correction drive component 32 includes a hinge support 321, a cantilever 322 and a drive component 323. One end of the cantilever 322 is arranged around the hinge support 321, and the other end is cantilevered; the drive component 323 is used to drive the cantilever 322 to switch between a horizontal state and an inclined state. The drive component 323 is configured to drive the cantilever 322 to rotate around the hinge support 321 so that the target part 5 on the cantilever 322 moves toward the positioning reference portion 31. When the target part 5 is in contact with the positioning reference portion 31, the cantilever 322 can continue to limit the target part 5 to prevent the target part 5 from moving.

[0069] As an optional embodiment of this case, please refer to Figure 4-5 The driving assembly 323 includes a telescopic driving member, a first articulated arm 3232 and a second articulated arm 3233; the telescopic driving member includes a telescopic rod 3231; one end of the first articulated arm 3232 is hingedly connected to the telescopic rod 3231; one end of the second articulated arm 3233 is hingedly connected to the other end of the first articulated arm 3232, and the other end of the second articulated arm 3233 is hingedly connected to the hinge support 321; one end of the cantilever 322 away from the free end is fixedly connected to the second articulated arm 3233, so that the cantilever 322 can rotate around the hinge support 321 through the second articulated arm 3233.

[0070] It should be noted that the telescopic driving component is a driving device such as a cylinder or a hydraulic cylinder or an electric telescopic rod 3231. During specific operation, the telescopic driving component drives the telescopic rod 3231 to perform a telescopic action, and the telescopic rod 3231 drives the first articulated arm 3232 to move and drives the second articulated arm 3233 to rotate around the hinge support 321. The second articulated arm 3233 drives the cantilever 322 to rotate, thereby realizing force output and pulling the tray 52 or material frame 51 placed on the cantilever 322 toward the positioning reference part 31. The cantilever 322 cooperates with the positioning reference part 31 to achieve the precise positioning and fixation of the tray 52 or the material frame 51 by clamping.

[0071] As an optional embodiment of this case, please refer to Figure 4-5 , along a direction perpendicular to the telescopic rod 3231 , limiting portions 3234 are respectively provided on both sides of the end of the first articulated arm 3232 , and the distance between the two limiting portions 3234 is exactly equal to the length of the first articulated arm 3232 .

[0072] It should be noted that, due to the setting of the limiting portion 3234, when the first articulated arm 3232 is in a horizontal position and the telescopic rod 3231 maintains a predetermined telescopic length, the first articulated arm 3232 is limited by the two limiting portions 3234 to achieve mechanical self-locking, so that the cantilever 322 can continuously output holding force, thereby enabling the tray 52 or the material frame 51 to be continuously clamped and precisely positioned and fixed, which is more labor-saving.

[0073] In summary, the utility model effectively overcomes some practical problems in the prior art and thus has high utilization value and use significance.

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A positioning device for precisely positioning a target part, characterized in that: The positioning device comprises: Positioning frame; A positioning guide assembly is provided on the positioning frame and is used for guiding and positioning the target part when it is placed on the positioning frame; The correction component is arranged on or beside the positioning frame, and is used for automatically correcting the position of the target part that has been placed on the positioning frame.

2. The positioning device according to claim 1, characterized in that: A detection mechanism is arranged on or beside the positioning frame, and the detection mechanism is used to detect the direction and position of the target part.

3. The positioning device according to claim 1, characterized in that: The positioning guide assembly includes a first guide portion, a second positioning guide portion and a third positioning portion; The first guide portion is used for guiding the target part when it enters the positioning frame and moves along the first direction; the second positioning guide portion is used for vertical guidance and second direction limitation of the target part falling toward the positioning frame, and the third positioning portion is used for vertical support and limitation of the target part on the positioning frame, wherein the first direction intersects with the second direction.

4. The positioning device according to claim 3, characterized in that: At least one of the first guide portion, the second positioning guide portion and the third positioning portion is a roller group capable of guiding and / or positioning.

5. The positioning device according to claim 3, characterized in that: One end of the positioning frame along the first direction is an open structure.

6. The positioning device according to claim 3, characterized in that: The correction component comprises: A positioning reference portion, arranged at one end of the positioning frame along a first direction; The correction drive assembly is arranged beside the positioning reference portion, and the correction drive assembly is used to drive the target part to move to the positioning reference portion.

7. The positioning device according to claim 2, characterized in that: The target part includes a material frame and a tray located below the material frame; The detection mechanism includes a tray position detection unit for detecting whether the tray is in place, a material frame direction detection unit for detecting the orientation of the material frame, and a material frame position detection unit for detecting the position of the material frame.

8. The positioning device according to claim 6, characterized in that: The correction drive assembly comprises: Hinge support; A cantilever, one end of which is rotatably arranged around the hinge support and the other end of which is cantilevered; A driving assembly is used to drive the cantilever to switch between a horizontal state and an inclined state. The driving assembly is configured to drive the cantilever to rotate around the hinge support so that the target part on the cantilever moves toward the positioning reference part.

9. The positioning device according to claim 8, characterized in that: The drive assembly includes A telescopic drive member, including a telescopic rod; A first articulated arm, articulatedly connected to the telescopic rod; The second articulated arm has one end articulated to the first articulated arm and the other end articulated to the articulated support, and one end of the cantilever is fixedly connected to the second articulated arm.

10. The positioning device according to claim 9, characterized in that: Limiting portions are respectively arranged on both sides of the end of the first articulated arm in a direction perpendicular to the telescopic direction of the telescopic rod, and the distance between the two limiting portions is exactly equal to the length of the first articulated arm.

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