Tray feeding and discharging device and lens detection machine with same

Abstract

The utility model discloses a tray feeding and discharging device for lens detection machine to carry out feeding to the tray with lens, and the tray has horizontal bearing surface and multiple lens positioning grooves arranged on the bearing surface, which comprises: feeding and discharging frame, lifting drive component, fixedly arranged on the feeding and discharging frame, lifting platform, connected to the lifting drive component and driven to move along the vertical direction, conveying component, including the feeding end extending to the lifting platform top, at least two correction components, symmetrically arranged on both sides of the conveying component feeding end, and the correction component has the adjusting rod in contact with the tray side wall, clamping mechanism, including transverse drive component and at least two clamping arms extending in the vertical direction, and the transverse drive component drives the clamping arm to move towards or away from each other in the horizontal direction. The utility model discloses a tray feeding and discharging device and lens detection machine with same, which realizes the positioning and stable transmission of the tray, and improves the automation level and working efficiency of the lens detection machine.

Description

Technical Field

[0001] This utility model relates to the field of lens inspection equipment technology, specifically to a tray loading and unloading device and a lens inspection machine having the same. Background Technology

[0002] In the lens manufacturing process, lens inspection is a crucial step in ensuring product quality. The lens inspection machine, as the core equipment for automated lens inspection, directly impacts lens production quality and capacity through its efficiency and accuracy. The tray loading and unloading device, an important component of the lens inspection machine, is responsible for accurately and efficiently delivering trays containing lenses to the inspection station and removing the trays after inspection.

[0003] Existing lens inspection machine tray loading and unloading devices have several shortcomings in practical applications. The trays are prone to positional shifts during transport, preventing them from accurately reaching the inspection station and affecting the accuracy and stability of lens inspection, thus reducing efficiency. Furthermore, the structural design of the loading and unloading device is inadequate, lacking effective tray correction, clamping, and lifting control mechanisms. This makes the trays prone to shaking and falling during loading and unloading, affecting not only the normal operation of the equipment but also potentially damaging the lenses and increasing production costs. Consequently, significant manual intervention and adjustments are required, making it difficult to meet the demands of modern, efficient, and automated lens production. Utility Model Content

[0004] This utility model provides a tray loading and unloading device and a lens inspection machine having the same, to solve the problems of low efficiency, insufficient positioning accuracy and poor component coordination of traditional loading and unloading devices.

[0005] One technical solution disclosed in this utility model is:

[0006] A tray loading and unloading device is used in a lens inspection machine to load a tray containing lenses. The tray has a horizontal bearing surface and multiple lens positioning grooves disposed on the bearing surface, including:

[0007] The loading and unloading frame is fixed to the main body of the lens inspection machine;

[0008] The lifting drive assembly is fixedly mounted on the loading and unloading frame;

[0009] A lifting platform is connected to and driven by the lifting drive assembly to move vertically.

[0010] A conveying assembly, including a feed end extending above the lifting platform, is mounted on the main body of the equipment;

[0011] At least two correction components are symmetrically arranged on both sides of the feed end of the conveying component, and the correction components have adjustment rods that contact the side wall of the tray;

[0012] A clamping mechanism is provided below the lifting platform. The clamping mechanism includes a lateral drive assembly and at least two clamping arms extending in the vertical direction. The lateral drive assembly drives the clamping arms to move towards or away from each other in the horizontal direction.

[0013] Optionally, the lifting drive assembly includes:

[0014] Vertically installed support columns;

[0015] A linear module is movably arranged along the axial direction of the support column and connected to the lifting platform;

[0016] A drive motor is located at one end of the support column and is connected to the linear module via a coupling.

[0017] The connecting block moves synchronously with the linear module;

[0018] The track is fixed at one end to the loading and unloading frame and connected at the other end to the connecting block to limit its movement.

[0019] Optionally, the lifting platform includes a support plate, a first sensor, and a fixing member, and the connecting block connects the support plate and the fixing member to mount the support plate on the lifting drive assembly.

[0020] Optionally, the correction component includes:

[0021] The rotary drive assembly is fixed to the main body of the device via the first connector;

[0022] The adjusting rod has an "L"-shaped free end and is driven to rotate by the rotary drive assembly.

[0023] At least two third sensors are used to limit the rotation angle of the adjusting rod.

[0024] Optionally, it further includes limiting components, at least two of which are respectively located on both sides of the middle position of the conveying component, the limiting components comprising:

[0025] The second connector has U-shaped holes at both ends, with one end fixed to the main body of the equipment;

[0026] A limiting plate is fixed to the other end of the second connecting member, and the limiting plate is positioned by displacement within the U-shaped hole through an adjustable nut.

[0027] Optionally, the lateral drive component includes:

[0028] Two pulleys are respectively disposed at opposite ends of the lateral drive assembly;

[0029] The driving component is coaxially connected to one of the pulleys;

[0030] A gear belt, tensioned between the two pulleys;

[0031] At least two sliders are connected to and engaged with each of the clamping arms;

[0032] A fourth sensor, located at the end of the lateral drive assembly, limits the slider travel.

[0033] Optionally, a fixing rod is provided at the end of the feed end, the fixing rod passes through the lifting platform and is at the same height as the adjusting rod, and a fifth sensor is provided at the top of the fixing rod.

[0034] Optionally, a second sensor is provided in the area in front of the feed end and the initial end of the conveying assembly.

[0035] Optionally, it also includes a control component that responds to a signal transmitted by the second sensor to control the start and stop of the lifting drive component.

[0036] Optionally, a lens inspection machine includes at least one of the aforementioned tray loading and unloading devices.

[0037] The beneficial effects of the pallet loading and unloading device disclosed in this utility model are as follows: the correction components are symmetrically arranged on both sides of the feeding end of the conveying component, which can effectively correct the position of the pallet and improve the positioning accuracy of the pallet; the lateral drive component of the clamping mechanism drives the clamping arm to move horizontally, realizing the clamping and releasing of the pallet, and ensuring the stability of the pallet during the lifting process; by setting up components such as the lifting drive component, the correction component, and the clamping mechanism, the automatic conveying, correction, clamping and lifting of the pallet are realized. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of a tray loading and unloading device and a lens inspection machine having the same in one embodiment of the present invention.

[0039] Figure 2 This is a schematic diagram of the lifting component structure in one embodiment of the pallet loading and unloading device and the lens inspection machine having the same.

[0040] Figure 3 This is a schematic diagram of the tray assembly and limiting assembly structure in one embodiment of the tray loading and unloading device and the lens inspection machine having the same.

[0041] Figure 4This is a schematic diagram of the clamping mechanism structure in one embodiment of the tray loading and unloading device and the lens inspection machine having the same.

[0042] Explanation of icon numbers:

[0043]

[0044] Detailed Implementation

[0045] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0047] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0048] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0049] like Figure 1 As shown, this utility model discloses a tray loading and unloading device for a lens inspection machine to load trays containing lenses. The tray has a horizontal bearing surface and multiple lens positioning grooves disposed on the bearing surface, including:

[0050] The loading and unloading frame 100 is fixed to the main body of the lens inspection machine;

[0051] The lifting drive assembly 200 is fixedly mounted on the loading and unloading frame 100;

[0052] The lifting platform 300 is connected to the lifting drive assembly 200 and is driven by it to move in the vertical direction;

[0053] The conveying assembly 400 includes a feed end extending above the lifting platform 300, and the conveying assembly 400 is mounted on the main body of the equipment;

[0054] At least two correction components 500 are symmetrically arranged on both sides of the feed end of the conveying component 400, and the correction components have adjustment rods that contact the side wall of the tray;

[0055] A clamping mechanism 600 is disposed below the lifting platform. The clamping mechanism 600 includes a horizontal drive component 601 and at least two clamping arms 602 extending in the vertical direction. The horizontal drive component 601 drives the clamping arms 602 to move towards each other or away from each other in the horizontal direction.

[0056] In this embodiment, the pallet loading and unloading device is used by the lens inspection machine to load pallets containing lenses. The loading and unloading frame 100 is fixed to the main body of the lens inspection machine. The lifting drive component 200 is fixedly installed on the loading and unloading frame 100 and is connected to the lifting platform 300, driving the lifting platform 300 to move vertically to realize the vertical transport of the pallet. The conveying component 400 is installed on the main body of the machine, and its feeding end extends above the lifting platform 300 to transport the pallet to a designated position above the lifting platform 300. At least two correction components 500 are symmetrically arranged on both sides of the feeding end of the conveying component 400. The adjusting rod 501 of the correction component 500 can contact the side wall of the pallet to correct the position of the pallet during the conveying process and ensure accurate pallet positioning. The clamping mechanism 600 is located below the lifting platform 300. Its lateral drive component 601 can drive at least two clamping arms 602 extending vertically to move towards or away from each other in the horizontal direction, thereby clamping or releasing the pallet to ensure that the pallet is stable and reliable during the lifting process.

[0057] In some embodiments, such as Figure 2As shown, the support columns 201 of the lifting drive assembly 200 are vertically arranged on both sides of the loading / unloading frame 100, with one support column 201 on each side, and the two support columns 201 are parallel and symmetrically distributed. The height of the support columns 201 is designed according to the working height requirements of the lens inspection machine to ensure that the lifting platform 300 can move within the vertical range. The linear module 202 is installed on the support columns 201. The linear module 202 includes a guide rail and a slider, and the slider is fixedly connected to the connecting block 205. The drive motor 203 is a servo motor, which can precisely control the moving speed and position of the linear module 202. The drive motor 203 is connected to the transmission screw of the linear module 202 through the coupling 204. When the drive motor 203 rotates, it drives the transmission screw to rotate, thereby causing the slider to move up and down along the guide rail, realizing the vertical movement of the lifting platform 300. The track 206 is a chain or belt, with one end fixed to the top of the loading / unloading frame 100 and the other end fixed to the connecting block 205. When the connecting block 205 moves, the track 206 moves accordingly. When the connecting block 205 moves to its limit position, the track 206 is tightened, which restricts the further movement of the connecting block 205 and plays the role of travel limit, preventing the lifting platform 300 from exceeding the safe movement range.

[0058] The lifting platform 300's support plate 301 is a rectangular plate with sufficient strength and rigidity to support the weight of the tray and lens. The fixing member 302 is an L-shaped bracket, with one end connected to the support plate 301 by bolts and the other end fixedly connected to the connecting block 205. The connecting block 205 connects both the support plate 301 and the fixing member 302, ensuring the support plate 301 is stably mounted on the lifting drive assembly 200 and remains horizontal during lifting. The lifting platform conveying assembly 300 also includes a first sensor conveying assembly 303, which is installed at the edge of the support plate conveying assembly 301. This first sensor conveying assembly 303 detects whether the tray has reached a preset position on the lifting platform conveying assembly 300 and sends a limit signal to the control assembly conveying assembly 900.

[0059] In some embodiments, such as Figure 1 and Figure 3As shown, the conveyor assembly 400 is a belt conveyor assembly, including a drive pulley, a driven pulley, and a conveyor belt. The drive pulley is driven by a motor, and the driven pulley is located at the end of the feed end. The conveyor belt is tensioned between the drive pulley and the driven pulley. The motor drives the drive pulley to rotate, which in turn drives the conveyor belt, thereby conveying the pallet from the initial end to the feed end. The feed end extends above the lifting platform 300. The width of the feed end is designed according to the size of the pallet to ensure that the pallet can move smoothly on the conveyor belt. The conveyor assembly 400 is mounted on the main body of the equipment, and the height of the feed end matches the initial position height of the lifting platform 300 so that the pallet can be smoothly transferred from the conveyor assembly 400 to the lifting platform 300.

[0060] The conveying assembly 400 is equipped with a second sensor 401 at both its infeed end and initial end. The second sensor 401 can be a photoelectric sensor, used to detect the presence and position of the pallet. When the pallet reaches the position of the second sensor 401 at the initial end, the sensor sends a signal to start the motor of the conveying assembly 400, transporting the pallet to the infeed end. When the pallet reaches the position of the second sensor 401 at the infeed end, the sensor sends a signal to stop the motor of the conveying assembly 400, and simultaneously controls the lifting drive assembly 200 to start working, causing the lifting platform 300 to rise or fall to a designated position.

[0061] In some embodiments, such as Figure 3 As shown, the correction components 500 are symmetrically arranged on both sides of the feed end of the conveying component 400, with one correction component 500 on each side of the conveying component 400. The rotary drive component 502 is a rotary motor, fixed to the main body of the equipment via a first connector 503, which can be a bracket to ensure stable installation of the rotary drive component 502. One end of the L-shaped adjusting rod 501 is connected to the output shaft of the rotary drive component 502, and the other end faces the feed end of the conveying component 400. When the rotary drive component 502 drives the L-shaped adjusting rod 501 to rotate, the free end of the adjusting rod 501 can contact the side wall of the tray to correct the position of the tray. For example, when the pallet shifts during transport, the adjusting rod 501 on one side rotates and pushes the pallet sidewall to return the pallet to the correct position; at least two third sensors 504 are arranged around the rotary drive assembly 502 to detect the rotation angle of the adjusting rod 501; when the adjusting rod 501 rotates to the preset maximum or minimum angle, the third sensor 504 sends an angle arrival signal to the control assembly 900 to control the rotary drive assembly 502 to stop rotating, preventing the adjusting rod 501 from over-rotating and ensuring the accuracy and safety of the calibration process.

[0062] The fixed rod 800 at the end of the feeding end passes through the lifting platform 300. The height of the fixed rod 800 is the same as the height of the adjusting rod 501. A fifth sensor 801 is provided at the top of the fixed rod 800. The fifth sensor 801 is a contact sensor. When the pallet is completely conveyed to the end of the feeding end, the edge of the pallet triggers the fifth sensor 801. After receiving the signal, the control component 900 controls the conveying component 400 to stop running and starts the clamping mechanism 600 to clamp the pallet, ensuring the accurate position of the pallet above the lifting platform 300.

[0063] In some embodiments, such as Figure 4 As shown, the clamping mechanism 600 is located below the lifting platform 300. The transverse drive assembly 601 includes two pulleys 603, which are respectively located at both ends of the transverse drive assembly 601. The pulleys 603 are mounted on the bracket via bearings. The drive component 604 is a motor, which is coaxially connected to one of the pulleys 603. When the drive motor rotates, it drives the pulley 603 to rotate. A gear belt 605 is tensioned between the two pulleys 603. The gear belt 605 meshes with a slider 606, and the slider 606 is fixedly connected to the clamping arm 602. When the drive unit 604 drives the pulley 603 to rotate, the gear belt 605 moves accordingly, causing the slider 606 to move horizontally, thereby causing the clamping arms 602 to move towards or away from each other, thus clamping and releasing the tray. The fourth sensor 607 is located at the end of the horizontal drive assembly 601. When the slider 606 moves to the limit position, the fourth sensor 607 is triggered, controlling the drive unit 604 to stop rotating, limiting the stroke of the slider 606, and preventing the clamping arms 602 from moving excessively and damaging the tray or lens. The clamping arms 602 extend vertically, and an elastic buffer layer, such as a rubber pad, can be provided on their inner side to provide cushioning when clamping the tray, avoiding damage to the tray, and increasing the clamping friction to ensure that the tray is clamped firmly.

[0064] In some embodiments, such as Figure 3 As shown, limiting components 700 are arranged on both sides of the middle position of the conveying component 400, with one limiting component 700 on each side. The second connecting member 701 has U-shaped holes 702 at both ends, with the length direction of the U-shaped holes 702 being horizontal, allowing the limiting plate 703 to move horizontally within the U-shaped holes 702. One end of the second connecting member 701 is fixed to the main body of the equipment, and the other end is connected to the limiting plate 703. The limiting plate 703 is set perpendicular to the conveying direction of the conveying component 400 and is positioned within the U-shaped holes 702 by an adjustable nut 704. The position of the limiting plate 703 is adjusted according to the size of the pallet and the conveying path, so that the pallet is restricted by the limiting plate 703 during conveying, while the distance between the two limiting plates 703 can also be adjusted, keeping the pallet on the correct conveying path and preventing pallet deviation.

[0065] In some embodiments, the control component 900 includes a PLC controller electrically connected to the first sensor 303, the second sensor 401, the third sensor 504, the fourth sensor 607, and the fifth sensor 801. The control component 900 receives signals from each sensor and controls the coordinated operation of the lifting drive component 200, the conveying component 400, the calibration component 500, and the clamping mechanism 600 according to a preset logic program. For example, when the second sensor 401 detects that the pallet has reached the initial end, the control component 900 starts the conveying component 400; when the fifth sensor 801 detects that the pallet is in place, the control component 900 sequentially starts the calibration component 500 to calibrate the pallet's position, starts the clamping mechanism 600 to clamp the pallet, and finally controls the lifting drive component 200 to transport the pallet to the inspection station.

[0066] In another embodiment, a pallet loading / unloading frame 100 is fixedly mounted on the main body of the lens inspection machine. The conveying assembly 400, correction assembly 500, and limiting mechanism of the pallet loading / unloading device are all installed based on the structural layout of the main body. The lifting drive assembly 200, lifting platform 300, and clamping mechanism 600 of the pallet loading / unloading device form a collaborative working system with the main body through mechanical connections, ensuring precise docking of the pallet along its conveying path within the inspection machine with the inspection station.

[0067] Workflow: A tray carrying lenses is placed at the initial end of the conveying assembly 400. Upon detection of the tray by the second sensor 401 at the initial end, the motor of the conveying assembly 400 is activated, transporting the tray to the infeed end. Another second sensor 401 is positioned near the infeed end. As the tray is conveyed at the infeed end, the adjusting rods 501 of the correction assemblies on both sides rotate according to the tray's position, contacting the tray's sidewalls and pushing the tray to the correct position. The fixing rod 800 at the end of the infeed end cooperates with the adjusting rods 501 to further position the tray. When the tray reaches the designated position at the end of the infeed end, the lateral drive assembly 601 of the clamping mechanism 600 drives the clamping arms 602 to move towards each other, restricting the tray's lateral position on the lifting platform 300. The drive motor 203 of the lifting drive assembly 200 is activated, driving the lifting platform 300 vertically via the linear module 202, transporting the tray to the inspection position of the lens inspection machine for inspection. After the inspection is completed, the lifting platform 300 descends to the initial position, the clamping mechanism 600 releases the pallet, and the conveying component 400 transports the empty pallet to the unloading position, completing the unloading process.

[0068] In summary, this utility model discloses a tray loading / unloading device and a lens inspection machine incorporating it. The symmetrically arranged correction components on both sides of the feeding section of the conveying assembly effectively correct the tray position, preventing it from shifting during transport and ensuring the tray accurately reaches the inspection station. This guarantees the accuracy and stability of lens inspection and improves inspection efficiency. The lateral drive component of the clamping mechanism drives the clamping arms to move horizontally towards or away from each other, firmly clamping the tray during loading / unloading to prevent it from shaking or falling, protecting the lenses from damage and reducing production costs. The rotary drive component in the correction assembly drives the adjusting rod to rotate, and in conjunction with the limiting plate in the limiting assembly, it is positioned within the U-shaped hole via an adjustable nut. This allows for flexible adjustment according to different tray specifications, enhancing the device's versatility. Through the coordinated work of the conveying assembly, lifting drive assembly, clamping mechanism, and other components, as well as the control component responding to sensor signals to control the device's operation, manual intervention is reduced, achieving automated tray loading / unloading operations and meeting the high-efficiency and automated requirements of modern lens production. The device is equipped with multiple sensors, effectively limiting the operating range of each component, ensuring safe operation and preventing malfunctions caused by components exceeding their travel limits.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A tray loading and unloading device for a lens inspection machine to load a tray containing lenses, the tray having a horizontal bearing surface and a plurality of lens positioning grooves disposed on the bearing surface, characterized in that, include: The loading and unloading frame is fixed to the main body of the lens inspection machine; The lifting drive assembly is fixedly mounted on the loading and unloading frame; A lifting platform is connected to and driven by the lifting drive assembly to move vertically. A conveying assembly, including a feed end extending above the lifting platform, is mounted on the main body of the equipment; At least two correction components are symmetrically arranged on both sides of the feed end of the conveying component, and the correction components have adjustment rods that contact the side wall of the tray; A clamping mechanism is provided below the lifting platform. The clamping mechanism includes a lateral drive assembly and at least two clamping arms extending in the vertical direction. The lateral drive assembly drives the clamping arms to move towards or away from each other in the horizontal direction.

2. The pallet loading and unloading device according to claim 1, characterized in that, The lifting drive component includes: Vertically installed support columns; A linear module is movably arranged along the axial direction of the support column and connected to the lifting platform; A drive motor is located at one end of the support column and is connected to the linear module via a coupling. The connecting block moves synchronously with the linear module; The track is fixed at one end to the loading and unloading frame and connected at the other end to the connecting block to limit its movement.

3. The pallet loading and unloading device according to claim 2, characterized in that, The lifting platform includes a support plate, a first sensor, and a fixing component. The connecting block connects the support plate and the fixing component to mount the support plate onto the lifting drive assembly.

4. The pallet loading and unloading device according to claim 1, characterized in that, The correction component includes: The rotary drive assembly is fixed to the main body of the device via the first connector; The adjusting rod has an "L"-shaped free end and is driven to rotate by the rotary drive assembly. At least two third sensors are used to limit the rotation angle of the adjusting rod.

5. The pallet loading and unloading device according to claim 1, characterized in that, It also includes limiting components, at least two of which are respectively located on both sides of the middle position of the conveying component, the limiting components comprising: The second connector has U-shaped holes at both ends, with one end fixed to the main body of the equipment; A limiting plate is fixed to the other end of the second connecting member, and the limiting plate is positioned by displacement within the U-shaped hole through an adjustable nut.

6. The pallet loading and unloading device according to claim 1, characterized in that, The lateral drive component includes: Two pulleys are respectively disposed at opposite ends of the lateral drive assembly; The driving component is coaxially connected to one of the pulleys; A gear belt, tensioned between the two pulleys; At least two sliders are connected to and engaged with each of the clamping arms; A fourth sensor, located at the end of the lateral drive assembly, limits the slider travel.

7. The pallet loading and unloading device according to claim 1, characterized in that, The feed end is provided with a fixed rod, which passes through the lifting platform and is at the same height as the adjusting rod. A fifth sensor is provided at the top of the fixed rod.

8. The pallet loading and unloading device according to claim 1, characterized in that, The feed end and the initial end of the conveying assembly are respectively equipped with second sensors.

9. The pallet loading and unloading device according to claim 8, characterized in that, It also includes a control component that responds to a signal transmitted by the second sensor to control the start and stop of the lifting drive component.

10. A lens inspection machine, characterized in that, It includes at least one pallet loading / unloading device as described in any one of claims 1-9.

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