A positioning device

Abstract

The utility model belongs to positioning technical field discloses a kind of positioning device. The positioning device is used for positioning frame piece, pedestal assembly includes the carrier plate and loading platform being arranged at interval along first direction, carrier plate is used to support frame piece and is equipped with multiple adsorption holes along first direction through both ends;Negative pressure plate is fixedly connected with carrier plate and is located between loading platform and carrier plate, can conduct negative pressure airflow in multiple adsorption holes, to adsorb frame piece in carrier plate;Lifting assembly includes driving part and floating plate, floating plate is located between negative pressure plate and loading platform, driving part is fixedly connected with loading platform, the output end of driving part is connected with floating plate by passing loading platform, to make floating plate lift along first direction;Multiple positioning pieces are connected with floating plate and can pass negative pressure plate and carrier plate in turn, some positioning pieces can be butted with frame piece inner wall, and other positioning pieces can be butted with frame piece outer wall. The positioning device improves the accuracy, stability and consistency of frame piece positioning, improves production quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of positioning technology, and in particular to a positioning device. Background Technology

[0002] In the production process of mobile phone frame parts (hereinafter referred to as parts), accurate positioning during the loading stage is a key prerequisite for ensuring the quality of subsequent processing and assembly. Typically, parts need to be placed in a positioning device for position calibration before being picked up by a gripper and transferred to the next process.

[0003] In existing technologies, side-push positioning devices are commonly used for part positioning. These devices have positioning structures at four points on the part, with two adjacent points being fixed and the other two being movable. During operation, the part is pushed into the device from one side of the movable positioning point, and its position is fixed by the lateral pushing action of the movable positioning point.

[0004] However, when the part is not pushed to the preset position, the lateral thrust of the active positioning point can easily cause the part to deform. If the part itself has a large tolerance, it is difficult for the lateral thrust mechanism to limit the part to the same standard position after each push. This not only increases the difficulty of debugging the positioning device, but also causes the part to be crushed due to inaccurate positioning when the subsequent material handling gripper picks up the material, affecting production quality and efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning device to avoid deformation of frame components and crushing during material handling, improve the accuracy, stability and consistency of frame component positioning, reduce debugging difficulty, and improve production quality and efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A positioning device for positioning a frame member, the positioning device comprising:

[0008] The base assembly includes a carrier plate and a platform spaced apart along a first direction. The carrier plate is used to support the frame member and has a plurality of adsorption holes extending through both ends along the first direction.

[0009] A negative pressure plate, fixedly connected to the carrier plate, is located between the platform and the carrier plate. The negative pressure plate can conduct negative pressure airflow through a plurality of adsorption holes to adsorb the frame member onto the carrier plate.

[0010] The lifting assembly includes a drive unit and a floating plate. The floating plate is located between the negative pressure plate and the platform. The drive unit is fixedly connected to the platform. The output end of the drive unit passes through the platform and is connected to the floating plate, so as to make the floating plate rise and fall along the first direction.

[0011] Multiple positioning components are connected to the floating plate. These positioning components can be sequentially inserted through the negative pressure plate and the carrier plate. Some of these positioning components can abut against the inner wall of the frame component, while others can abut against the outer wall of the frame component.

[0012] As an alternative to the positioning device, multiple positioning members are provided with guide portions, the extension direction of the guide surface of the guide portion forms a preset angle with the first direction, and the extension direction is from the carrier plate toward the direction away from the frame member.

[0013] As an alternative to the positioning device, multiple positioning components are provided with limiting portions. The limiting portion of any positioning component is smoothly connected to the guide portion. When the floating plate abuts against the negative pressure plate, the height of the limiting portion protruding from the surface of the carrier plate is greater than or equal to the thickness of the frame component.

[0014] As an alternative to the positioning device, multiple positioning members are provided with a fixing part, and the fixing part of any positioning member is connected to the end of the limiting part away from the guide part, and the cross-sectional area of ​​the fixing part is larger than the cross-sectional area of ​​the limiting part;

[0015] The lifting assembly also includes a fixed plate, and the floating plate is provided with a plurality of stepped holes, each of which corresponds to a positioning member. Each stepped hole accommodates the fixing part and part of the limiting part corresponding to the positioning member. The fixed plate is detachably connected to the floating plate and abuts against the fixing part to limit the axial movement of the plurality of positioning members.

[0016] As an alternative to the positioning device, the length of the large diameter section of the stepped hole is equal to the length of the corresponding fixing part.

[0017] As an alternative to the positioning device, the lifting assembly also includes a fastener, the fixed plate has a first connecting hole, the floating plate has a second connecting hole, and the fastener passes through the first connecting hole and is threadedly connected to the second connecting hole.

[0018] As an alternative to the positioning device, the negative pressure plate has an air passage inside, which has multiple air holes that connect to the surface of the negative pressure plate. One end of the air passage has a negative pressure interface for connecting to an external air source.

[0019] As an alternative to the positioning device, the driving component is one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator. The driving component includes a cylinder barrel and a cylinder rod. The cylinder rod is capable of reciprocating within the cylinder barrel. The cylinder barrel is fixedly connected to the platform, and the cylinder rod passes through the platform and connects to the floating plate.

[0020] As an alternative to the positioning device, the positioning device further includes a guide assembly, which includes a bushing and a guide rod. The two ends of the guide rod are respectively connected to the platform and the negative pressure plate. The bushing is connected to the floating plate and is slidably connected to the guide rod.

[0021] As an alternative to the positioning device, the positioning device includes four guide components, which are respectively disposed at the four top corners of the floating plate.

[0022] Beneficial effects:

[0023] This invention provides a positioning device that achieves efficient and precise positioning of frame components through the coordinated operation of a base assembly, a negative pressure plate, a lifting assembly, and multiple positioning elements. During operation, a drive unit drives a floating plate to raise the positioning elements along a first direction. The positioning elements protrude from the surface of the carrier plate, which supports the frame components. Some of the positioning elements abut against the inner wall of the frame components, while others abut against the outer wall. This bidirectional positioning method quickly completes position calibration, effectively eliminating positioning deviations caused by incomplete positioning or large tolerances in the frame components. The negative pressure plate, through the negative pressure generated by the suction holes, stably adsorbs the positioned frame components, preventing displacement in subsequent processes and ensuring the flatness of the frame components. This precise bidirectional positioning ensures the consistency of the frame component's position, while the negative pressure adsorption reinforces the positioning effect and ensures the flatness of the frame components. It avoids the deformation and damage to the frame components that easily occur in traditional side-push positioning methods and provides reliable protection for the subsequent material handling process, thereby improving overall production quality and efficiency. Attached Figure Description

[0024] Figure 1 This is a first schematic diagram of the positioning device provided in an embodiment of the present utility model;

[0025] Figure 2 This is a second schematic diagram of the positioning device provided in an embodiment of the present utility model;

[0026] Figure 3 This is a third schematic diagram of the positioning device provided in this embodiment of the utility model;

[0027] Figure 4 yes Figure 3 A magnified view of position A in the middle;

[0028] Figure 5 yes Figure 3 A cross-sectional view at position BB in the middle;

[0029] Figure 6 yes Figure 3 A cross-sectional view at position CC;

[0030] Figure 7This is a schematic diagram of the positioning component provided in an embodiment of the present utility model;

[0031] Figure 8 This is a structural schematic diagram of the frame component provided in an embodiment of this utility model.

[0032] In the picture:

[0033] 100. Frame components;

[0034] 1. Base assembly; 11. Stage; 12. Carrier plate; 121. Adsorption hole; 122. Receiving groove; 123. Direction mark;

[0035] 2. Negative pressure plate;

[0036] 3. Lifting assembly; 31. Drive component; 32. Floating plate; 33. Fixed plate; 311. Cylinder; 312. Cylinder rod; 321. Stepped hole;

[0037] 4. Positioning component; 41. Guide part; 42. Limiting part; 43. Fixing part; 411. Guide surface;

[0038] 5. Guide assembly; 51. Bushing; 52. Guide rod. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] This embodiment provides a positioning device, such as Figure 8 As shown, the positioning device is used to position the frame component 100 (e.g., a mobile phone frame). In the production process of the frame component 100, accurate positioning during the loading stage is a key prerequisite for ensuring the quality of subsequent processing and assembly. Typically, the frame component 100 needs to be placed in the positioning device for position calibration before being picked up by the pick-up gripper and transferred to the next process.

[0044] like Figures 1-7 As shown, the positioning device includes a base assembly 1, a negative pressure plate 2, a lifting assembly 3, and multiple positioning components 4. The base assembly 1 includes a carrier plate 12 and a platform 11 spaced apart along a first direction. The carrier plate 12 supports the frame component 100 and has multiple adsorption holes 121 extending through both ends along the first direction. The negative pressure plate 2 is fixedly connected to the carrier plate 12 and is located between the platform 11 and the carrier plate 12. The negative pressure plate 2 can conduct negative pressure airflow through the multiple adsorption holes 121 to adsorb the frame component 100 onto the carrier plate 12. The lifting assembly 3 includes a driving component 31 and a... A floating plate 32 is located between the negative pressure plate 2 and the platform 11. A driving member 31 is fixedly connected to the platform 11. The output end of the driving member 31 passes through the platform 11 and connects to the floating plate 32, which is used to make the floating plate 32 rise and fall in the first direction. Multiple positioning members 4 are connected to the floating plate 32. The multiple positioning members 4 can pass through the negative pressure plate 2 and the platform 12 in sequence. Some of the positioning members 4 can abut against the inner wall of the frame member 100, and other positioning members 4 can abut against the outer wall of the frame member 100.

[0045] This positioning device achieves efficient and precise positioning of the frame component 100 through the coordinated operation of the base assembly 1, the negative pressure plate 2, the lifting assembly 3, and multiple positioning components 4. During operation, the drive component 31 drives the floating plate 32 to lift the positioning components 4 in the first direction. The positioning components 4 protrude from the surface of the carrier plate 12, which supports the frame component 100. Some of the positioning components 4 abut against the inner wall of the frame component 100, while others abut against the outer wall. This bidirectional positioning method quickly completes position calibration, effectively eliminating positioning deviations caused by the frame component 100 not being in place or having large tolerances. The negative pressure plate 2 uses the negative pressure generated by the suction holes 121 to stably adsorb the positioned frame component 100, which not only prevents displacement in subsequent stages but also ensures the flatness of the frame component 100. This method ensures the consistency of the frame component 100's position through precise bidirectional positioning, and reinforces the positioning effect and ensures the flatness of the frame component 100 through negative pressure adsorption. This not only avoids the deformation and damage to the frame component 100 that easily occur in traditional side-push positioning, but also provides reliable protection for the subsequent material handling process, thereby improving overall production quality and efficiency. In this embodiment, the first direction is the vertical direction, and the floating distance of the output end of the drive component 31 along the first direction is 0-10mm. Correspondingly, the floating plate 32 and the positioning component 4 move a distance of 0-10mm along the first direction.

[0046] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, the upper surface of the carrier plate 12 is provided with a receiving groove 122. The cross-section of the receiving groove 122 matches the shape of the inner cavity of the frame member 100. When the frame member 100 is placed, it can be placed on the edge of the receiving groove 122, forming a preliminary limit through the edge of the groove. Multiple positioning members 4 that abut against the inner wall of the frame member 100 are arranged in a ring around the receiving groove 122, and multiple positioning members 4 that abut against the outer wall of the frame member 100 are arranged in a ring around the outer periphery of the receiving groove 122. Multiple suction holes 121 are directly opposite to the frame member 100 and are arranged in a ring around the outer periphery of the receiving groove 122. The two types of positioning members 4, together with the contour of the receiving groove 122 and the suction effect of the suction holes 121, achieve precise positioning of the frame member 100. The bottom of the receiving groove 122 is provided with a direction mark 123 for quickly identifying the placement direction of the frame member 100, ensuring that the orientation of the frame member 100 is accurate when loading.

[0047] In this embodiment, the carrier plate 12 can simultaneously position multiple frame members 100, such as two, three, or four. Correspondingly, the receiving slots 122 are also configured as two, three, or four, and each receiving slot 122 is arranged in an orderly manner on the carrier plate 12. Each receiving slot 122 is independently configured with multiple positioning members 4 (for abutting against the inner wall of the corresponding frame member 100) arranged around the receiving slot 122 and multiple positioning members 4 (for abutting against the outer wall of the corresponding frame member 100) arranged around the outer periphery of the receiving slot 122. At the same time, each receiving slot 122 is provided with multiple adsorption holes 121 that are directly opposite to the corresponding frame member 100 around its outer periphery. In addition, each receiving slot 122 is provided with an independent negative pressure plate 2 and a lifting component 3. The negative pressure plate 2 is used to provide negative pressure airflow to the adsorption holes 121 on the outer periphery of the corresponding receiving slot 122, and the lifting component 3 is used to drive the positioning parts 4 inside and outside the corresponding receiving slot 122 to achieve lifting action, thereby ensuring that multiple frame parts 100 can be accurately positioned on the carrier plate 12 at the same time.

[0048] like Figure 7 As shown, each of the multiple positioning members 4 is provided with a guide portion 41. The extension direction of the guide surface 411 of the guide portion 41 forms a preset angle with the first direction, and the extension direction is the direction from the self-supporting plate 12 toward the frame member 100. The guide surface 411 of the guide part 41 is inclined and extends from the carrier plate 12 away from the frame member 100. When the frame member 100 is placed into the receiving groove 122 of the carrier plate 12, the inclined guide surface 411 will first contact the inner or outer wall of the frame member 100. With the help of the lateral force generated by the inclined angle, the position of the frame member 100 is finely adjusted. Even if there is a slight deviation in the initial placement of the frame member 100, it can gradually slide to the preset positioning position under the guidance of the guide surface 411, avoiding rigid collision between the positioning member 4 and the frame member 100 and causing damage to the frame member 100. At the same time, this guide structure can also reduce the requirements for the placement accuracy of the frame member 100 during loading, reduce positioning failures caused by inaccurate initial position, and further improve the stability and smoothness of the positioning process. In this embodiment, the preset included angle can be 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, etc., and is not specifically limited here.

[0049] like Figure 5 and Figure 7As shown, each of the multiple positioning components 4 is provided with a limiting part 42. The limiting part 42 of any positioning component 4 is smoothly connected to the guide part 41. When the floating plate 32 abuts against the negative pressure plate 2, the height of the limiting part 42 protruding from the surface of the carrier plate 12 is greater than or equal to the thickness of the frame component 100. The smooth connection between the limiting part 42 and the guide part 41 of the multiple positioning components 4 ensures the continuity of movement of the frame component 100 when transitioning from the guide part 41 to the limiting part 42, and also avoids scratches on the surface of the parts caused by abrupt structural changes. When the floating plate 32 abuts against the negative pressure plate 2, the height of the limiting part 42 protruding from the surface of the carrier plate 12 is greater than or equal to the thickness of the frame component 100. This design ensures that the limiting part 42 can achieve full limiting from the thickness direction of the frame component 100. At the same time, the sufficient protrusion height ensures that the limiting part 42 can always maintain effective contact with the frame part 100. Even if there is a slight thickness tolerance in the frame part 100, it will not affect the reliability of the limiting, providing a stable position reference for the subsequent material handling and processing of the material handling gripper.

[0050] like Figure 5 and Figure 7 As shown, each of the multiple positioning components 4 is provided with a fixing part 43. The fixing part 43 of any positioning component 4 is connected to the end of the limiting part 42 away from the guide part 41. The cross-sectional area of ​​the fixing part 43 is larger than the cross-sectional area of ​​the limiting part 42. The lifting assembly 3 also includes a fixing plate 33. The floating plate 32 is provided with multiple stepped holes 321. Each stepped hole 321 corresponds to a positioning component 4. Each stepped hole 321 accommodates the fixing part 43 and part of the limiting part 42 of the corresponding positioning component 4. The fixing plate 33 is detachably connected to the floating plate 32. The fixing plate 33 abuts against the fixing part 43 to limit the axial movement of the multiple positioning components 4. The fixed part 43 has a larger cross-sectional area than the limiting part 42, allowing it to form a radial limit with the hole wall through the stepped surface when embedded in the stepped hole 321 of the floating plate 32, reducing the shaking of the positioning part 4 during operation. Simultaneously, the connection between the fixed part 43 and the limiting part 42, and the abutment of the fixed plate 33 against the fixed part 43, construct an axial fastening structure. The detachable fixed plate 33 firmly locks the positioning part 4 within the stepped hole 321, preventing axial displacement of the positioning part 4 due to force during repeated lifting and lowering positioning, ensuring the stable positional accuracy of the limiting part 42 and the guide part 41. When the positioning part 4 is subjected to lateral force from the frame 100 or the impact force of its own lifting and lowering, the larger cross-sectional area of ​​the fixed part 43 can disperse stress, reducing the risk of breakage at the connection between the limiting part 42 and the fixed part 43, and improving the overall structural strength of the positioning part 4. Furthermore, the enclosing design of the stepped hole 321 on the fixed part 43 further enhances the connection rigidity between the positioning part 4 and the floating plate 32, making the positioning action more accurate and reliable. In addition, the detachable fixing plate 33 facilitates the individual replacement of the positioning component 4, reducing maintenance costs and extending the overall service life of the positioning device.

[0051] like Figure 5 and Figure 7As shown, the length of the large-diameter section of the stepped hole 321 is equal to the length of the corresponding fixing part 43. When the positioning part 4 is installed in the stepped hole 321, the fixing part 43 can be completely embedded in the large-diameter section, so that the end face of the fixing part 43 fits precisely with the stepped surface of the stepped hole 321, avoiding the fixing part 43 from protruding from the stepped hole 321 due to excessive length or from having excessive clearance with the hole wall due to insufficient length. This tightly fitting structure can, on the one hand, form a complete enclosure of the fixing part 43 through the hole wall of the large-diameter section, further enhancing the radial stability of the positioning part 4 and reducing its radial sway when under force; on the other hand, the fit between the fixing part 43 and the stepped surface can cooperate with the abutment of the fixing plate 33 to form a rigid constraint on the positioning part 4 from both axial ends, eliminating the axial movement space of the positioning part 4 and ensuring that the positional accuracy of the limiting part 42 and the guide part 41 remains stable.

[0052] In this embodiment, the lifting assembly 3 also includes fasteners (not shown). The fixed plate 33 has a first connecting hole, and the floating plate 32 has a second connecting hole. The fastener passes through the first connecting hole and the second connecting hole and is threadedly connected. The threaded connection facilitates disassembly and replacement of the positioning component 4 during installation and maintenance, and also ensures the reliability and flexibility of the connection. In this embodiment, screws or bolts are used as fasteners. In other embodiments, the fixed plate 33 and the floating plate 32 can also be snap-fit ​​connected. The floating plate 32 has a slot, and the fixed plate 33 has a buckle. The slot of the floating plate 32 and the buckle of the fixed plate 33 can precisely engage. During installation, simply align the buckle with the slot and apply a certain pressure. The buckle will elastically deform and snap into the slot, achieving a quick connection between the two. During disassembly, apply a pulling force in the opposite direction to disengage the buckle from the slot. No additional tools are required, greatly improving the efficiency of assembly and maintenance.

[0053] In this embodiment, the negative pressure plate 2 has an air passage inside, and the air passage has multiple air holes communicating with the surface of the negative pressure plate 2. One end of the air passage has a negative pressure interface for connecting to an external air source. When the external air source is connected through the negative pressure interface, the airflow forms a negative pressure environment in the air passage, and then transmits the negative pressure to the adsorption holes 121 of the carrier plate 12 through the multiple air holes communicating with the surface of the negative pressure plate 2. The multiple air holes are evenly distributed, which can ensure that the negative pressure in the air passage acts evenly on each adsorption hole 121, so that the frame component 100 is adsorbed and the force is balanced, avoiding deformation or displacement of the frame component 100 due to uneven local negative pressure, and effectively ensuring the flatness of the frame component 100. At the same time, the connection between the negative pressure interface and the external air source makes it easy to control the on / off state and magnitude of the negative pressure. The adsorption force can be flexibly adjusted according to the material and thickness of the frame component 100, which ensures the stability of adsorption and prevents the frame component 100 from being damaged by excessive adsorption force. This airway structure design achieves efficient conduction and uniform distribution of negative pressure, providing reliable adsorption force support for the stable positioning of the frame component 100, and further improving the applicability and reliability of the positioning device. In this embodiment, the external air source is a vacuum pump or a negative pressure generator.

[0054] like Figure 6 As shown, the driving component 31 is one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator. The driving component 31 includes a cylinder barrel 311 and a cylinder rod 312. The cylinder rod 312 can reciprocate within the cylinder barrel 311. The cylinder barrel 311 is fixedly connected to the platform 11, and the cylinder rod 312 passes through the platform 11 and connects to the floating plate 32. The driving component 31, being a hydraulic cylinder, a pneumatic cylinder, or an electric actuator, possesses stable linear driving capability, providing reliable power for the lifting and lowering of the floating plate 32. The fixed connection between the cylinder barrel 311 and the platform 11 ensures the overall stability of the driving component 31, preventing its own sway from affecting driving accuracy during operation. The cylinder rod 312, passing through the platform 11 and connecting to the floating plate 32, can directly transmit driving force to the floating plate 32, causing the floating plate 32 and multiple positioning components 4 to smoothly lift and lower along the first direction.

[0055] like Figures 1-3 As shown, the positioning device also includes a guide assembly 5, which includes a bushing 51 and a guide rod 52. The two ends of the guide rod 52 are connected to the platform 11 and the negative pressure plate 2, respectively. The bushing 51 is connected to the floating plate 32, and the bushing 51 is slidably connected to the guide rod 52. The two ends of the guide rod 52 are connected to the platform 11 and the negative pressure plate 2, forming a stable support structure. The bushing 51, which is connected to the floating plate 32, is fitted on the guide rod 52 and can slide along it, providing precise guidance and constraint for the lifting and lowering movement of the floating plate 32. When the driving component 31 drives the floating plate 32 to move in the first direction, the sliding cooperation between the bushing 51 and the guide rod 52 can effectively limit the horizontal deviation of the floating plate 32, ensuring that the floating plate 32 always lifts and lowers along the preset straight trajectory, and avoiding tilting or shaking of the floating plate 32 due to slight deviations in the power output of the driving component 31 or uneven load. Meanwhile, the guide component 5 can also disperse the radial force borne by the drive component 31, reduce the risk of bending deformation of the cylinder rod 312 due to uneven force, and extend the service life of the drive component 31.

[0056] In this embodiment, as Figure 1As shown, the positioning device includes four guide components 5, which are respectively located at the four corners of the floating plate 32. The guide components 5 at the four corners constrain the lifting and lowering movement of the floating plate 32 from different directions, effectively counteracting the torsional and eccentric forces that may occur during the movement of the floating plate 32, further reducing the tilting and swaying amplitude of the floating plate 32, and ensuring the straightness of its lifting trajectory. Simultaneously, the evenly distributed guide components 5 ensure more balanced force distribution on various parts of the floating plate 32, avoiding structural deformation caused by excessive local stress and extending the service life of the floating plate 32. Furthermore, the synergistic effect of the four guide components 5 also improves the overall stability and accuracy of the movement of the floating plate 32 and the positioning component 4, making the positioning component 4 more accurate and reliable when in contact with the frame component 100, providing a stronger guarantee for the high-quality positioning of the frame component 100.

[0057] The operation of the positioning device in this embodiment is roughly as follows: First, the frame member 100 is placed according to the direction mark 123 at the bottom of the receiving groove 122, so that it is placed on the edge of the receiving groove 122 of the carrier plate 12, completing the initial direction alignment and limiting; at the same time, the driving member 31 of the lifting assembly 3 is activated, driving the floating plate 32 to rise along the first direction, so that multiple positioning members 4 pass through the negative pressure plate 2 and the carrier plate 12 in sequence. During this process, the guide part 41 of the positioning member 4 first contacts the inner wall or outer wall of the frame member 100, and the position of the frame member 100 is finely adjusted by the inclined guide surface 411, guiding it to slide towards the preset positioning position; when the floating plate 32 rises to abut against the negative pressure plate 2, the limiting part 42 of the positioning member 4 abuts tightly against the inner wall and outer wall of the frame member 100, realizing the precise positioning of the frame member 100. Positioning is performed such that the height of the limiting part 42 protruding from the surface of the carrier plate 12 ensures complete limiting of the frame member 100 in the thickness direction. Then, an external air source introduces negative pressure airflow into the air passage through the negative pressure interface of the negative pressure plate 2. The negative pressure is transmitted through the air passage and air holes to multiple adsorption holes 121 on the carrier plate 12 that are directly opposite the frame member 100, stably adsorbing the frame member 100 onto the carrier plate 12 while ensuring the flatness of the frame member 100. During the entire positioning process, four guide components 5 distributed at the top corners of the floating plate 32 cooperate with the drive component 31 to ensure that the floating plate 32 and the positioning component 4 rise and fall smoothly in the first direction, avoiding deviation or shaking. When it is necessary to remove the frame member 100, the drive component 31 drives the floating plate 32 to descend, the positioning component 4 disengages from the frame member 100, the negative pressure is released, and one positioning cycle is completed.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A positioning device for positioning a frame member (100), characterized in that, The positioning device includes: The base assembly (1) includes a carrier plate (12) and a platform (11) spaced apart along a first direction. The carrier plate (12) is used to support the frame member (100). The carrier plate (12) has a plurality of adsorption holes (121) extending through both ends along the first direction. The negative pressure plate (2) is fixedly connected to the carrier plate (12) and is located between the platform (11) and the carrier plate (12). The negative pressure plate (2) can conduct negative pressure airflow through a plurality of adsorption holes (121) to adsorb the frame member (100) onto the carrier plate (12). The lifting assembly (3) includes a drive unit (31) and a floating plate (32). The floating plate (32) is located between the negative pressure plate (2) and the platform (11). The drive unit (31) is fixedly connected to the platform (11). The output end of the drive unit (31) passes through the platform (11) and is connected to the floating plate (32) to make the floating plate (32) rise and fall along the first direction. Multiple positioning elements (4) are connected to the floating plate (32). The multiple positioning elements (4) can pass through the negative pressure plate (2) and the carrier plate (12) in sequence. Some of the multiple positioning elements (4) can abut against the inner wall of the frame member (100), and other multiple positioning elements (4) can abut against the outer wall of the frame member (100).

2. The positioning device according to claim 1, characterized in that, Each of the positioning members (4) is provided with a guide portion (41), the extension direction of the guide surface (411) of the guide portion (41) is at a preset angle with the first direction, and the extension direction is from the carrier plate (12) toward the direction away from the frame member (100).

3. The positioning device according to claim 2, characterized in that, Each of the positioning components (4) is provided with a limiting part (42). The limiting part (42) of any positioning component (4) is smoothly connected to the guide part (41). When the floating plate (32) abuts against the negative pressure plate (2), the height of the limiting part (42) protruding from the surface of the carrier plate (12) is greater than or equal to the thickness of the frame component (100).

4. The positioning device according to claim 3, characterized in that, Each of the positioning members (4) is provided with a fixing part (43). The fixing part (43) of any positioning member (4) is connected to the end of the limiting part (42) away from the guide part (41). The cross-sectional area of ​​the fixing part (43) is greater than the cross-sectional area of ​​the limiting part (42). The lifting assembly (3) further includes a fixing plate (33). The floating plate (32) is provided with a plurality of stepped holes (321). The stepped holes (321) correspond one-to-one with the positioning members (4). Each stepped hole (321) accommodates the fixing part (43) and part of the limiting part (42) of the corresponding positioning member (4). The fixing plate (33) is detachably connected to the floating plate (32). The fixing plate (33) abuts against the fixing part (43) to restrict the axial movement of the plurality of positioning members (4).

5. The positioning device according to claim 4, characterized in that, The length of the large diameter section of the stepped hole (321) is equal to the length of the corresponding fixing part (43).

6. The positioning device according to claim 4, characterized in that, The lifting assembly (3) also includes fasteners. The fixed plate (33) is provided with a first connecting hole, and the floating plate (32) is provided with a second connecting hole. The fasteners pass through the first connecting hole and are threadedly connected to the second connecting hole.

7. The positioning device according to any one of claims 1-6, characterized in that, The negative pressure plate (2) has an air passage inside, and the air passage has multiple air holes that connect to the surface of the negative pressure plate (2). One end of the air passage has a negative pressure interface, which is used to connect to an external air source.

8. The positioning device according to any one of claims 1-6, characterized in that, The driving component (31) is one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator. The driving component (31) includes a cylinder barrel (311) and a cylinder rod (312). The cylinder rod (312) is capable of reciprocating within the cylinder barrel (311). The cylinder barrel (311) is fixedly connected to the platform (11). The cylinder rod (312) passes through the platform (11) and is connected to the floating plate (32).

9. The positioning device according to any one of claims 1-6, characterized in that, The positioning device further includes a guide assembly (5), which includes a bushing (51) and a guide rod (52). The two ends of the guide rod (52) are respectively connected to the platform (11) and the negative pressure plate (2). The bushing (51) is connected to the floating plate (32). The bushing (51) is slidably connected to the guide rod (52).

10. The positioning device according to claim 9, characterized in that, The positioning device includes four guide components (5), which are respectively disposed at the four top corners of the floating plate (32).

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