Dispensing fixing device and dispensing device for lens protection glass

Abstract

The invention discloses a dispensing fixing device and a dispensing device for lens protection glass, and relates to the technical field of optical lens assembly.The dispensing fixing device for the lens protection glass comprises a base, a carrying table and a clamping assembly; the carrying table is rotationally arranged at the top of the base around the axis extending in the up-down direction and used for containing the glass installation base. The clamping assembly comprises two clamping pieces, the two clamping pieces are arranged on the carrying table and arranged on the two opposite sides of the axis of the carrying table, at least one clamping piece has a moving stroke close to or away from the other clamping piece, and the two clamping pieces are used for jointly clamping the glass mounting base; according to the technical scheme provided by the invention, the gap in the inner side edge of the glass mounting seat can be filled with the glue, so that the lens protection glass can be uniformly dispensed, and the mounting quality of the protection glass is improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical lens assembly, and in particular to a glue dispensing fixing device and a glue dispensing device for lens protection glass. Background Art

[0002] The lens protective glass is a transparent glass installed at the front end of the lens to protect the lens from damage by dust, scratches, water vapor and other external factors. Some protective glasses are separately assembled on a glass mount and fixed to the glass mount with glue. Each time the protective glass is replaced, the entire glass mount and protective glass can be directly replaced.

[0003] At present, manual pneumatic dispensing machines or automatic dispensing machines are generally used for dispensing protective glass. However, the dispensing is uneven during the ring-shaped dispensing, resulting in a low dispensing yield and increased lens costs.

[0004] Therefore, how to evenly dispense glue on the lens protection glass and improve the installation quality of the protection glass has become an urgent problem to be solved in the field. Summary of the invention

[0005] The main purpose of the present invention is to provide a glue dispensing and fixing device for a lens protection glass and a glue dispensing device, aiming to uniformly dispense glue on the lens protection glass and improve the installation quality of the protection glass.

[0006] To achieve the above-mentioned purpose, the dispensing and fixing device for the lens protection glass proposed in the present invention includes a base, a carrier and a clamping assembly; the carrier is rotatable around an axis extending in the up-down direction and is arranged on the top of the base for placing a glass mounting seat; the clamping assembly includes two clamping members, the two clamping members are arranged on the carrier and on two opposite sides of the carrier axis, at least one clamping member has an active stroke approaching or moving away from the other clamping member, and the two clamping members are used to clamp the glass mounting seat together.

[0007] In one embodiment, each clamping member is provided with a clamping opening on a side facing the other clamping member, and the widths of the two clamping openings are gradually increased in directions toward each other.

[0008] In one embodiment, a slide groove is formed on the top surface of the carrier, and the slide groove extends along the connecting line direction of the two clamps. A protrusion is formed on the bottom surface of at least one clamp, and the protrusion extends into the slide groove and is movably arranged along the extension direction of the slide groove.

[0009] In one embodiment, two opposite ends of the slide slot are arranged to pass through the platform, so that the clamping member can be moved out from the through side of the slide slot to be separated from the platform.

[0010] In one embodiment, a accommodating cavity is formed in a clamping member; the clamping assembly also includes a connecting seat, a screw and an elastic member; the connecting seat is arranged on a carrier; the screw is fixedly arranged on the connecting seat and extends along the connecting line direction of the two clamping members, and a part of the screw can be located in the accommodating cavity; the elastic member is arranged in the accommodating cavity and is sleeved on the outside of the screw, at least a part of the elastic member can be embedded in the thread groove of the screw, and both ends of the elastic member are against the cavity wall of the accommodating cavity.

[0011] In one embodiment, the connection base is detachably disposed on the carrier.

[0012] In one embodiment, the dispensing and fixing device for the lens protection glass also includes a bearing arranged between the base and the carrier; one of the inner ring or the outer ring of the bearing is fixedly arranged on the base, and the other is fixedly connected to the carrier.

[0013] In one embodiment, the glue dispensing and fixing device for the lens protection glass further includes a driving assembly disposed on the base, the driving assembly includes a driving motor, and the driving motor has a driving shaft with the axis of the carrier as the central axis.

[0014] In one embodiment, a placement groove is provided on the top surface of the carrier for placing the glass mounting seat; and / or the carrier is detachably connected to the base.

[0015] The present invention also provides a glue dispensing device for lens protection glass, which includes the glue dispensing fixing device for lens protection glass as described above and a glue dispensing tube, wherein the glue dispensing tube is arranged above the carrier and is used to dispense glue to the glass mounting seat.

[0016] The technical solution of the present invention is to place a glass mounting seat on a carrier, and rotatably set the carrier on a base. When dispensing glue, the carrier is rotated so that the glass mounting seat rotates with the carrier. At this time, the dispensing head is fixed above the glass mounting seat to dispense glue, so that the glue can be in a ring shape on the glass mounting seat, and the glue diffuses outward from the dispensing position under the action of centrifugal force to fill the gap on the inner edge of the glass mounting seat, reduce the formation of bubbles, and thus be evenly distributed on the inner edge of the glass mounting seat, and two clamps are movably set on opposite sides of the carrier axis to prevent the glass mounting seat from moving under the action of centrifugation, thereby improving the installation quality of the protective glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of an embodiment of a glue dispensing and fixing device for a lens protection glass provided by the present invention;

[0019] Figure 2 for Figure 1 Schematic side view of the glue dispensing fixture for the center lens protective glass.

[0020] Description of Figure Numbers:

[0021] 100. Glue dispensing and fixing device for lens protection glass; 1. base; 2. carrier; 21. slide groove; 22. placement groove; 3. clamping assembly; 31. clamping piece; 311. clamping mouth; 312. protrusion; 32. connecting seat; 33. screw; 4. bearing;

[0022] 200. Glass mounting base.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] The lens protective glass is a transparent glass installed at the front end of the lens to protect the lens from damage by dust, scratches, water vapor and other external factors. Some protective glasses are separately assembled on a glass mount and fixed to the glass mount with glue. Each time the protective glass is replaced, the entire glass mount and protective glass can be directly replaced.

[0028] At present, manual pneumatic glue dispensers are generally used for protective glass dispensing. Glue is injected into the needle tube, and the glue is discharged from the needle tube by air pressure. At this time, you need to hold the needle tube by hand, place the connector on the platform, and then inject the glue into the glue groove of the protective glass mounting seat. This method has too many human factors, which may cause uneven dispensing, incomplete dispensing, missing dots, or dots on the lens; there are also desktop automatic pneumatic glue dispensers, which no longer use hands to hold the needle tube, but fix the connector on the platform, and use the computer to control the X, Y, and Z directions of the needle tube, but because it is a multi-axis structure, the structure is complex, resulting in high costs, and it is not suitable for annular dispensing grooves.

[0029] Based on this, see Figure 1 and Figure 2 The present invention proposes a dispensing and fixing device 100 for lens protection glass, which includes a base 1, a platform 2 and a clamping assembly 3; the platform 2 is rotatably arranged on the top of the base 1 around an axis extending in the up-down direction, and is used to place a glass mounting seat 200; the clamping assembly 3 includes two clamping members 31, the two clamping members 31 are arranged on the platform 2, and are arranged on two opposite sides of the axis of the platform 2, at least one clamping member 31 has an active stroke approaching or moving away from the other clamping member 31, and the two clamping members 31 are used to clamp the glass mounting seat 200 together.

[0030] The technical solution of the present invention places a glass mounting seat 200 on a carrier 2, and rotates the carrier 2 to be set on the base 1. When dispensing glue, the carrier 2 is rotated so that the glass mounting seat 200 rotates with the carrier 2. At this time, the dispensing head is fixed above the glass mounting seat 200 to dispense glue, so that the glue can be in a ring shape on the glass mounting seat 200, and the glue diffuses outward from the dispensing position under the action of centrifugal force to fill the gap on the inner edge of the glass mounting seat 200, reducing the formation of bubbles, thereby evenly distributing the glue on the inner edge of the glass mounting seat 200, and the two clamping members 31 are movably arranged on the opposite sides of the axis of the carrier 2 to prevent the glass mounting seat 200 from moving under the action of centrifugation, thereby improving the installation quality of the protective glass.

[0031] Specifically, in order to reduce the movement of the clamping member 31 and improve the clamping stability, one of the clamping members 31 is fixedly connected to the carrier 2 by a screw.

[0032] In one embodiment of the present invention, each clamping member 31 is provided with a clamping opening 311 on one side facing the other clamping member 31, and the widths of the two clamping openings 311 are gradually increased in the direction toward each other. In this way, different widths correspond to clamping glass mounting seats 200 of different sizes to meet the installation requirements of protective glass of various specifications.

[0033] It should be noted that the width of the clamping opening 311 is the distance between the two side walls in the direction perpendicular to the line connecting the two clamping members 31, and the width dimensions of the two clamping openings 311 are gradually increased in the direction toward each other, that is, the two side walls of the clamping opening 311 move away from each other in the direction approaching the other clamping opening 311, and are arranged in a triangle, trapezoid or other shapes.

[0034] In one embodiment of the present invention, a slide groove 21 is formed on the top surface of the carrier 2, and the slide groove 21 extends along the connecting line direction of the two clamping members 31. A protrusion 312 is formed on the bottom surface of at least one clamping member 31, and the protrusion 312 extends into the slide groove 21 and is movably arranged along the extending direction of the slide groove 21. In this arrangement, a guide rail structure is used to install the limit to limit the moving direction of the clamping member 31.

[0035] Specifically, a protrusion 312 is formed on the bottom surface of one clamping member 31, and it moves along the extension direction of the slide groove 21. When it moves to a suitable position, the clamping member 31 is connected and fixed to the carrier 2 using screws, while the other clamping member 31 only has a protrusion 312 formed on the bottom surface and moves along the extension direction of the slide groove 21.

[0036] Furthermore, along the direction from the bottom of the slide groove 21 to the groove mouth, the width of the slide groove 21 is reduced, and the width of the protrusion 312 is gradually reduced, which is matched with the clearance of the slide groove 21 to prevent the clamping member 31 from derailing while maintaining the smoothness of sliding.

[0037] In one embodiment of the present invention, two opposite ends of the slide groove 21 are arranged through the platform 2, so that the clamping member 31 can be moved out from the through side of the slide groove 21 to be separated from the platform 2. Such an arrangement enables the clamping member 31 to be detachably connected to the platform 2 to improve the portability of the device.

[0038] In one embodiment of the present invention, a accommodating cavity (not shown in the figure) is formed in a clamping member 31; the clamping assembly 3 also includes a connecting seat 32, a screw rod 33 and an elastic member (not shown in the figure); the connecting seat 32 is arranged on the carrier 2; the screw rod 33 is fixedly arranged on the connecting seat 32, and is extended along the connecting line direction of the two clamping members 31, and a part of the screw rod 33 can be located in the accommodating cavity; the elastic member is arranged in the accommodating cavity and is sleeved on the outside of the screw rod 33, at least a part of the elastic member can be embedded in the thread groove of the screw rod 33, and both ends of the elastic member are against the cavity wall of the accommodating cavity. With such arrangement, the two clamping members 31 are brought close to each other under the action of the elastic member to clamp and replace the glass mounting seat 200, and after the dispensing is completed, the clamping member 31 equipped with the elastic member can be pulled open to directly place the next glass mounting seat 200, and then the clamping member 31 equipped with the elastic member can be loosened to form a clamping assembly 3 that can automatically clamp and is easy to adjust and replace the glass mounting seat 200. At the same time, the elastic member is arranged in the accommodating cavity of the clamping member 31 and embedded on the screw 33. The elastic member, the screw 33, the connecting seat 32 and the clamping member 31 are modularly designed to facilitate installation, save time for dispensing, and improve dispensing efficiency.

[0039] The thread groove is a spiral groove opened on the screw rod 33 , and the elastic member is a spring. The wire diameter of the spring and the width of the thread groove are interference fit so that part of the spring is embedded in the thread groove of the screw rod 33 .

[0040] If the elastic coefficient of the elastic member is too large, the glass mounting seat 200 will be deformed, affecting the subsequent process. Therefore, the elastic coefficient of the elastic member selected in the design is relatively small. However, if the elastic coefficient is too small, the glass may not be able to overcome the centrifugal force, affecting the dispensing effect. Therefore, the screw 33 passes through the clamping member 31 and extends from the side of the clamping member 31 away from the connecting seat 32, wherein the screw 33 is arranged on both sides of the clamping opening 311 to avoid the clamping opening 311 to avoid the glass mounting seat 200. The peripheral side of the screw 33 is provided with multiple scales, each scale corresponds to the clamping force of the clamping assembly 3, that is, each scale corresponds to a different compression amount of the elastic member, and there is a critical scale among the multiple scales, and the critical scale corresponds to the minimum clamping force that can overcome the influence of the centrifugal force. With such arrangement, when the clamping member 31 clamps the glass mounting seat 200, if the critical scale extends out of the clamping member 31, it means that the clamping force in the current state is sufficient to overcome the centrifugal force, and the glass mounting seat 200 can be rotated for glue dispensing; if the critical scale does not extend out of the clamping member 31, it means that the clamping force in the current state is insufficient to overcome the centrifugal force, and the position of the connecting seat 32 needs to be adjusted to enhance the clamping force.

[0041] Of course, the positions of the connecting seat 32, the screw 33, the elastic member and the clamping member 31 are not limited to the above-mentioned relationship, and can be in a manner that can achieve elastic clamping. In the second embodiment, the clamping assembly 3 includes a clamping member 31, a connecting seat 32, a connecting rod and an elastic member. The clamping member 31 and the connecting seat 32 are as described in the above-mentioned embodiment. The connecting rod extends along the connecting line direction of the two clamping members 31, and is set with a diameter change to form a protrusion 312 section and extension sections at both ends. A step surface is formed at the connection between the protrusion section and each extension section, and the diameter of the protrusion 312 section is larger than the extension section and is located in the accommodating cavity. Two elastic members are provided, which are respectively mounted on the two extension parts, and the two ends of each elastic member are respectively against the step surface and the cavity wall of the accommodating cavity. In the third embodiment, the clamping assembly 3 includes a clamping member 31, a connecting seat 32, a connecting rod and an elastic member. The clamping member 31 does not have an accommodating cavity. The connecting seat 32 and other parts of the clamping member 31 are as described in the above embodiments. The connecting rod is fixedly arranged on the connecting seat 32. The connecting rod extends along the connecting line direction of the two clamping members 31 and passes through the clamping member 31. The elastic member is sleeved on the connecting rod and its two ends are respectively against the clamping member 31 and the connecting seat 32.

[0042] In one embodiment of the present invention, the connection seat 32 is detachably disposed on the carrier 2. With such an arrangement, the connection seat 32, the screw rod 33, and the elastic member can be disassembled together with the clamping member 31, and the positions of the connection seat 32, the screw rod 33, and the elastic member can be determined according to glass mounting seats 200 of different specifications to provide a required elastic force to clamp the glass mounting seat 200.

[0043] Specifically, two 3 mm screws are used to fix the connection base 32 to the carrier 2 .

[0044] In one embodiment of the present invention, the dispensing and fixing device 100 for the lens protection glass also includes a bearing 4 arranged between the base 1 and the carrier 2; one of the inner ring or the outer ring of the bearing 4 is fixedly arranged on the base 1, and the other is fixedly connected to the carrier 2, and the carrier 2 is rotatably connected to the base 1 through the bearing 4, and rotates evenly without jamming.

[0045] Specifically, the bearing 4 includes an inner ring, an outer ring, a retaining frame and a plurality of balls. The inner ring and the outer ring take the rotation axis of the carrier 2 as the center axis, and the outer ring is sleeved on the inner ring; the retaining frame is arranged between the inner ring and the outer ring, and the retaining frame is arranged in a ring shape, and a plurality of through holes are opened. The through holes extend along the radial direction of the retaining frame. A plurality of balls are correspondingly arranged in the through holes, and the two sides of the balls are respectively against the inner ring and the outer ring. The inner ring is locked to the base 1 by four countersunk screws with a nominal diameter of 4 mm and a total height of 16 mm evenly distributed along its circumference. The outer ring has four countersunk screws with a nominal diameter of 4 mm and a total height of 16 mm evenly distributed along its circumference for fixing the connection with the carrier 2.

[0046] In one embodiment of the present invention, the lens protective glass dispensing and fixing device 100 further includes a driving assembly disposed on the base 1, the driving assembly including a driving motor, and the driving motor has a driving shaft with the axis of the stage 2 as the central axis. The driving motor is used to drive the stage 2 to rotate, and the rotation speed can be accurately maintained, so that the dispensing is more uniform.

[0047] Furthermore, a driving motor with adjustable speed is used, which can be adjusted among several speeds, and different speeds of the driving motor correspond to different critical scales on the screw 33 .

[0048] In one embodiment of the present invention, a placement groove 22 is provided on the top surface of the carrier 2 for placing the glass mounting seat 200; and / or the carrier 2 is detachably connected to the base 1. The glass mounting seat 200 is placed through the placement groove 22, and is further fixed, and the carrier 2 is detachably arranged. When dispensing glass mounting seats 200 of different specifications, the carrier 2 with the placement groove 22 that is gap-matched with the glass mounting seat 200 can be disassembled and replaced.

[0049] Specifically, a slide groove 21 is opened on the top surface of the carrier 2, and the slide groove 21 extends along the connecting direction of the two clamping members 31. The opposite ends of the slide groove 21 pass through the carrier 2, and the placement groove 22 is located at the central position of the top of the carrier 2. Therefore, the slide groove 21 is cut into two sections in the middle of the slide groove 21. Each section of the slide groove 21 corresponds to a clamping member 31 and has two through sides, so that the clamping member 31 has a higher degree of freedom when disassembling, and the protrusion 312 of each clamping member 31 can be moved out from the two through sides.

[0050] The present invention also provides a dispensing device for lens protection glass, which includes the dispensing fixing device 100 for lens protection glass and a dispensing tube as described above. The specific structure of the dispensing fixing device 100 for lens protection glass refers to the above embodiment. Since the dispensing device for lens protection glass adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the dispensing tube is arranged above the carrier 2, and is used to dispense glue to the glass mounting seat 200.

[0051] In one embodiment of the present invention, a clamping member 31 is movably arranged and can be fixed on the carrier 2, which is the first clamping member 31, and another clamping member 31 is movably arranged and modularly arranged with the connecting seat 32, the screw rod 33, and the elastic member, which is the second clamping member 31. When dispensing, the test steps of the present invention are as follows:

[0052] Step 1: Install the carrier 2 on the base 1 and slide the first clamping member 31 and the second clamping member 31 into the slide groove 21 of the carrier 2, fix the first clamping member 31, and adjust the position of the connecting seat 32 to ensure that the critical scale on the screw rod 33 is exposed;

[0053] In the second step, the first glass mounting seat 200 is placed on the placement groove 22, and the second clamping member 31 and the first clamping member 31 are controlled to clamp the glass mounting seat 200 together, thereby fixing the position of the dispensing tube, and controlling the rotation of the carrier 2 to make the dispensing tube discharge glue toward the inner side of the glass mounting seat 200;

[0054] The third step is to control the second clamping member 31 to move away from the first clamping member 31 , take out the first glass mounting seat 200 , put in the second glass mounting seat 200 , release the second clamping member 31 , and dispense glue to the second glass mounting seat 200 .

[0055] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dispensing and fixing device for lens protection glass, characterized in that: include: Pedestal; A carrier, rotatably arranged on the top of the base around an axis extending in the vertical direction, for placing a glass mounting seat; and ， The clamping assembly includes two clamping members, which are arranged on the platform and on two opposite sides of the platform axis. At least one of the clamping members has a movable stroke approaching or moving away from the other clamping member. The two clamping members are used to clamp the glass mounting seat together.

2. The glue dispensing and fixing device for lens protection glass according to claim 1, characterized in that: A clamping opening is arranged on one side of each clamping member facing the other clamping member, and the widths of the two clamping openings are gradually increased in directions toward each other.

3. The glue dispensing and fixing device for lens protection glass according to claim 1 or 2, characterized in that: A slide groove is provided on the top surface of the carrier, and the slide groove extends along the connecting direction of the two clamping members. A protrusion is formed on the bottom surface of at least one of the clamping members, and the protrusion extends into the slide groove and is movably arranged along the extending direction of the slide groove.

4. The glue dispensing and fixing device for lens protection glass according to claim 3, characterized in that: The two opposite ends of the slide slot penetrate the platform so that the clamping member can be moved out from the through side of the slide slot to be separated from the platform.

5. The glue dispensing and fixing device for lens protection glass according to claim 1, characterized in that: A receiving cavity is formed in the clamping member; The clamping assembly also includes: A connecting seat, arranged on the carrier; A screw rod is fixedly disposed on the connection seat and is extended along the connecting line of the two clamping members, and a part of the screw rod can be located in the accommodating cavity; and An elastic member is arranged in the accommodating cavity and sleeved on the outside of the screw rod. At least a part of the elastic member can be embedded in the thread groove of the screw rod. Both ends of the elastic member abut against the cavity wall of the accommodating cavity.

6. The glue dispensing and fixing device for lens protection glass according to claim 5, characterized in that: The connecting seat is detachably arranged on the carrier.

7. The glue dispensing and fixing device for lens protection glass according to claim 1, characterized in that: The glue dispensing and fixing device for the lens protection glass also includes a bearing arranged between the base and the carrier; one of the inner ring or the outer ring of the bearing is fixedly arranged on the base, and the other is fixedly connected to the carrier.

8. The glue dispensing and fixing device for lens protection glass according to claim 1, characterized in that: The glue dispensing and fixing device for the lens protection glass also includes a driving component arranged on the base, and the driving component includes a driving motor. The driving motor has a driving shaft with the axis of the carrier as the central axis.

9. The glue dispensing and fixing device for lens protection glass according to any one of claim 1, characterized in that: The top surface of the carrier is provided with a placement groove for placing the glass mounting seat; and / or, The carrier is detachably connected to the base.

10. A dispensing device for lens protection glass, characterized in that: The dispensing device for the lens protection glass comprises: The glue dispensing and fixing device for lens protection glass as described in any one of claims 1 to 9; and A glue dispensing tube is arranged above the carrier and is used for dispensing glue to the glass mounting seat.

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