Lens main barrel point glue alignment mechanism

Abstract

The utility model relates to a lens main cylinder point gum alignment mechanism, including the lifting frame body that drives lifting through third drive assembly, the lifting seat body is connected through vertical guide assembly, tension spring on the lifting frame body, the square pressure head of rotation is provided with through alignment motor on the lifting seat body, the first inductor that is used to induct the lowering stroke of lifting seat body is provided with on the lifting frame body. This lens main cylinder point gum alignment mechanism utilizes mechanical structure to carry out point gum alignment, namely, the pressure head rotates a certain angle before each descent, the lifting seat body drives the pressure head to lift repeatedly, until the pressure head that descends can embed the square groove of the lens main cylinder below, embeds the pressure head to rotate and drives the lens main cylinder to rotate synchronously after, to adjust the square groove to the point gum angle, the cost of this lens main cylinder point gum alignment mechanism is low, and the stable structure.

Description

Technical Field

[0001] This utility model relates to a lens main barrel adhesive dispensing and alignment mechanism. Background Technology

[0002] Lenses typically use circular filters, which are assembled by applying adhesive around the entire circumference within the lens's adhesive groove. Square filters, however, require adhesive application to four different grooves on the lens. After applying adhesive to one groove, the lens barrel needs to be rotated and adjusted at its rotating position before applying adhesive to the next groove. When the lens barrel is placed in its rotating position, the circumferential positions of the four adhesive grooves at the four corners of the square groove are uncertain. Currently, a vision inspection system is used to first detect the circumferential deflection angle of the square groove, and then a mechanical structure is used to rotate and adjust the lens barrel to align the square groove with the adhesive application angle. However, the detection components of the vision inspection system are quite delicate and more prone to damage, resulting in higher purchase and operating costs.

[0003] To address the aforementioned technical issues, this paper proposes a lens main barrel dispensing and alignment mechanism to achieve mechanical alignment and reduce equipment costs. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a lens main barrel dispensing and alignment mechanism.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a lens main barrel dispensing and alignment mechanism, including a lifting frame that is driven to rise and fall by a third driving component, a lifting seat connected to the lifting frame by a vertical guide component and a tension spring, a square pressing head that is driven to rotate by an alignment motor on the lifting seat, and a first sensor for sensing the descent stroke of the lifting seat on the lifting frame.

[0006] Preferably, the third drive assembly includes a transverse ball screw linear module fixed to the frame, a vertical ball screw linear module fixed to a transverse sliding block on the transverse ball screw linear module for transverse reciprocating translation, and the lifting frame is fixed to a vertical sliding block on the vertical ball screw linear module for vertical reciprocating translation.

[0007] Preferably, the vertical guide component is a second slider slide rail moving pair.

[0008] Preferably, the tension spring is vertical, with its top end pulling on the lifting frame and its bottom end pulling on the lifting seat.

[0009] Preferably, the alignment motor is fixedly connected to the lifting seat, and the output shaft of the alignment motor is fixedly connected to the pressure head facing downward.

[0010] Preferably, the pressing head is a square rod that extends vertically.

[0011] Preferably, the first sensor includes a first sensor body fixedly connected to the lifting frame, and a first sensing plate is fixedly connected to the lifting frame for sensing by the sensing head of the first sensor body.

[0012] Preferably, the first sensing element is provided with a vertically extending mounting groove and is locked to the lifting seat by screws passing through the mounting groove.

[0013] Preferably, a second sensor for sensing the rotation origin of the output shaft is provided between the output shaft of the positioning motor and the lifting seat.

[0014] Preferably, the second sensor includes a second sensor body fixedly connected to the lifting seat, and a second sensing plate is fixedly connected to the output shaft of the positioning motor for sensing by the sensing head of the second sensor body.

[0015] Compared with the prior art, the present invention has the following advantages: The lens main barrel dispensing and alignment mechanism uses a mechanical structure for dispensing and alignment, that is, before each descent, the attachment head rotates at a certain angle, and the lifting seat drives the attachment head to rise and fall multiple times until the descending attachment head can be embedded in the square groove of the lens main barrel below. After embedding, the attachment head can rotate and drive the lens main barrel to rotate synchronously to adjust the square groove to the dispensing angle. The lens main barrel dispensing and alignment mechanism has low cost and stable structure.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the working state of an embodiment of the present utility model.

[0019] Figure 3 for Figure 2 A magnified view of part A. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] like Figures 1-3 As shown, this embodiment provides a lens main barrel dispensing and alignment mechanism, including a lifting frame 1B driven to rise and fall by a third driving component. A lifting seat 4B is connected to the lifting frame via a vertical guide component 2B and a tension spring 3B. A square pressing head 6B driven to rotate by an alignment motor 5B is provided on the lifting seat. A first sensor 7B is provided on the lifting frame to sense the descent stroke of the lifting seat.

[0024] In this embodiment of the present invention, the third drive assembly includes a transverse ball screw linear module 8B fixedly connected to the frame, a vertical ball screw linear module 9B fixedly connected to a transverse sliding block on the transverse ball screw linear module for transverse reciprocating translation, and the lifting frame being fixedly connected to a vertical sliding block on the vertical ball screw linear module for vertical reciprocating translation.

[0025] In this embodiment of the invention, the vertical guide component is a second slider slide rail moving pair.

[0026] In this embodiment of the utility model, the axial direction of the tension spring is vertical, the top end of the tension spring is pulled on the lifting frame, and the bottom end of the tension spring is pulled on the lifting seat.

[0027] In this embodiment of the utility model, the alignment motor is fixedly connected to the lifting seat, and the output shaft of the alignment motor is fixedly connected to the pressing head facing downward.

[0028] In this embodiment of the utility model, the pressing head is a square rod that extends vertically, and the square size of the pressing head is adapted to the size of the square groove at the top of the lens main barrel.

[0029] In this embodiment of the present invention, the first sensor includes a first sensor body 10B fixedly connected to the lifting frame, and a vertically extending first sensing plate 11B fixedly connected to the lifting frame for sensing by the sensing head of the first sensor body.

[0030] In this embodiment of the present invention, the first sensing element is provided with a vertically extending mounting groove 12B, and is locked to the lifting seat by screws passing through the mounting groove. The position of the first sensing element can be adjusted up and down.

[0031] In this embodiment of the invention, a second sensor is provided between the output shaft of the positioning motor and the lifting seat to sense the rotation origin of the output shaft.

[0032] In this embodiment of the present invention, the second sensor includes a second sensor body 13B fixedly connected to the lifting seat, and a second sensing plate 14B fixedly connected to the output shaft of the positioning motor for sensing by the sensing head of the second sensor body.

[0033] When the equipment returns to zero and the alignment motor is at the origin, the initial angle of the pressure head is 0 degrees. That is, the lateral side of the square pressure head is parallel to the lateral side, and the longitudinal side is parallel to the longitudinal side. The tension spring is in a stretched state, providing tension to balance the gravity of the alignment mechanism itself.

[0034] In this embodiment of the utility model, the lens main barrel dispensing and alignment mechanism is located below the lens main barrel rotation station, and the lens main barrel adsorption and rotation mechanism is provided on the lens main barrel rotation station.

[0035] In this embodiment of the invention, the lens main barrel adsorption and rotation mechanism includes a movable seat 1A that reciprocates between a loading station and a dispensing alignment station, driven by a first driving component. The movable seat has a vertical rotating shaft 2A driven by a second driving component. The rotating shaft has an internal air passage, and an adsorption seat 3A is fixedly connected to its top. The adsorption seat has an adsorption groove 4A with an air hole communicating with the air passage. The bottom of the rotating shaft is connected to a vacuum pipe 6A via a rotary joint 5A. The first driving component includes a first cylinder 7A, located beside the movable seat. The cylinder body is fixedly connected to the frame, and the piston rod is fixedly connected to the movable seat. A first slider-rail sliding pair 8A is provided between the movable seat and the frame for guiding the translation of the movable seat. The second drive assembly includes a motor 9A, with a driving synchronous pulley 10A coaxially fixed to the motor's output shaft and a driven synchronous pulley 11A coaxially fixed to the rotating shaft. A synchronous belt 12A is wound between the driving and driven synchronous pulleys. A motor mounting block 13A and a rotating shaft mounting block 14A are positioned above the top surface of the movable base. Several connecting columns 15A are fixedly connected between the motor mounting block and the top surface of the movable base, and between the rotating shaft mounting block and the top surface of the movable base, thus connecting the motor mounting block, the rotating shaft mounting block, and the movable base as a single unit. The motor is fixedly connected to the motor mounting block, and the rotating shaft is mounted on the rotating shaft mounting block via bearings. The suction seat is located at the top of the rotating shaft mounting block, the driving synchronous pulley is located at the bottom of the motor mounting block, and the driven synchronous pulley, rotary joint, and vacuum pipe are located at the bottom of the rotating shaft mounting block. The shape of the suction groove is adapted to the shape of the lens main barrel to facilitate the insertion of the lens main barrel. The bottom of the adsorption tank is connected to the air passage of the rotating shaft via air holes. The adsorption tank is cylindrical in shape. The opening of the adsorption tank faces upward.

[0036] In this embodiment of the invention, the working principle of the lens main barrel adhesive dispensing and alignment mechanism is as follows:

[0037] First, the lens main tube at the loading station is placed into the adsorption tank, with the glue dispensing groove 16B and square groove 17B of the lens main tube 15B facing upwards. The first drive assembly pushes the movable seat to the glue dispensing alignment station.

[0038] Then, the lifting frame descends to the set height, causing the attachment head to contact the top of the lens main tube. After contact, the lifting base moves upward relative to the lifting frame, and the tension of the spring decreases. The alignment process involves the following two scenarios:

[0039] Scenario 1: When the lens main tube angle is consistent with the attachment head, the attachment head will be successfully inserted into the square groove.

[0040] Scenario 2: When the lens main tube angle and the attachment head are inconsistent, the attachment head cannot be inserted into the square groove.

[0041] In both of the above scenarios, assuming the set height for the lowering of the lifting frame is the same, the upward travel of the lifting seat relative to the lifting frame, as sensed by the first sensor, is different in both scenarios.

[0042] Therefore, in scenario one, when the angle of the square groove of the lens is consistent with that of the attachment head, after the lifting frame descends, the attachment head will smoothly embed into the square groove. At this time, the upward displacement of the lifting base relative to the lifting frame is small. The positioning sensor (first sensor) senses this small relative displacement and outputs a signal, causing the alignment motor to rotate a certain angle. The attachment head, along with the lens main barrel, rotates to the dispensing angle. After the lifting frame rises, the alignment is completed.

[0043] Scenario 2: When the angle of the lens square slot and the angle of the attachment head are inconsistent, the attachment head cannot be inserted into the square slot. In this case, the upward displacement of the lifting base relative to the lifting frame is large. The positioning sensor (first sensor) detects this large relative displacement, causing the alignment motor to temporarily stop rotating. Instead, after the lifting frame moves upward and resets, the alignment motor controls the attachment head to rotate a certain angle, and then it descends again for alignment. Before the attachment head is inserted into the square slot, the above actions are repeated. Before each descent, the attachment head rotates a certain angle until the descending attachment head can be inserted into the lens square slot. The positioning sensor (first sensor) detects this small relative displacement and outputs a signal. The control system calculates the difference between the current angle and the dispensing angle (based on the difference between the rotation angle of the alignment motor at the time of insertion and the set dispensing angle, it determines how many degrees the alignment motor still needs to drive the lens to rotate). The alignment motor rotates by this difference angle to the dispensing angle, and the attachment head, carrying the lens main barrel, rotates to the dispensing angle. After the lifting frame rises, the alignment is complete.

[0044] The angular error caused by the attachment head embedding process can be compensated for by setting the dispensing angle of the dispensing machine. If the attachment head still cannot be embedded after rotating 360 degrees, the system will alarm that the lens alignment is abnormal, and manual confirmation is required.

[0045] Before the lens main barrel is rotated to the dispensing angle, it is not vacuum-adsorbed in the adsorption tank, facilitating its rotational adjustment. After the lens main barrel is rotated to the dispensing angle, vacuum adsorption positions it in the adsorption tank. After dispensing one tank, the second drive component drives the rotating shaft to rotate synchronously with the adsorption base and the lens main barrel by 90 degrees. The dispensing machine then dispenses glue into the next tank, repeating the above actions until all tanks are fully dispensed.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A lens main barrel adhesive dispensing and alignment mechanism, characterized in that: The device includes a lifting frame that is driven to rise and fall by a third drive assembly. A lifting seat is connected to the lifting frame via a vertical guide assembly and a tension spring. A square pressure head that is driven to rotate by a positioning motor is provided on the lifting seat. A first sensor for sensing the descent stroke of the lifting seat is provided on the lifting frame.

2. The lens main barrel dispensing and alignment mechanism according to claim 1, characterized in that: The third drive assembly includes a transverse ball screw linear module fixed to the frame. A vertical ball screw linear module is fixed to a transverse sliding block on the transverse ball screw linear module for transverse reciprocating translation. The lifting frame is fixed to a vertical sliding block on the vertical ball screw linear module for vertical reciprocating translation.

3. The lens main barrel dispensing and alignment mechanism according to claim 1, characterized in that: The vertical guide component is the second slider slide rail moving pair.

4. The lens main barrel dispensing and alignment mechanism according to claim 1, characterized in that: The tension spring is vertical, with its top end pulling on the lifting frame and its bottom end pulling on the lifting seat.

5. The lens main barrel dispensing and alignment mechanism according to claim 1, characterized in that: The alignment motor is fixedly connected to the lifting seat, and the output shaft of the alignment motor is fixedly connected to the pressure head with its downward facing direction.

6. The lens main barrel dispensing and alignment mechanism according to claim 1, characterized in that: The pressing head is a square rod that extends vertically.

7. The lens main barrel dispensing and alignment mechanism according to claim 1, characterized in that: The first sensor includes a first sensor body fixedly connected to the lifting frame, and a first sensing plate fixedly connected to the lifting frame for sensing by the sensing head of the first sensor body.

8. The lens main barrel dispensing and alignment mechanism according to claim 7, characterized in that: The first sensing element is provided with a vertically extending mounting groove, and is locked to the lifting base by screws passing through the mounting groove.

9. The lens main barrel dispensing and alignment mechanism according to claim 1, characterized in that: A second sensor is provided between the output shaft of the positioning motor and the lifting seat to sense the rotation origin of the output shaft.

10. The lens main barrel dispensing and alignment mechanism according to claim 9, characterized in that: The second sensor includes a second sensor body fixedly connected to the lifting seat, and a second sensing plate fixedly connected to the output shaft of the alignment motor for sensing by the sensing head of the second sensor body.

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