Glasses leg positioning and mounting equipment and positioning method thereof

Abstract

The glasses leg positioning and mounting equipment comprises a workbench, an L-shaped supporting frame, a glasses leg fixing mechanism and a needle head circulating conveying mechanism are arranged on the surface of the workbench, and a reciprocating electric push rod is fixedly connected to the lower surface of the L-shaped supporting frame; the needle head circulating conveying mechanism comprises an annular supporting frame, a servo motor, a driving wheel, a driven wheel, a conveying belt, a plurality of loading blocks and needle head limiting assemblies, and needle head containing holes are formed in the surfaces of the loading blocks. Due to the fact that the upper end of the needle head containing hole is in a funnel shape, the guiding function can be achieved, and therefore the needle head can be conveniently installed in the needle head containing hole, and the needle head installation difficulty is effectively reduced. And the whole mounting process does not need to be stopped, so that continuous production is realized, and the efficiency of mounting the contact pins on the glasses legs is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glasses, in particular to a glasses leg positioning and installation device and a positioning method thereof. Background Art

[0002] Glasses are an optical device worn in front of the eyes, mainly used for vision correction, eye protection or other purposes such as decoration. Glasses are composed of lenses and frames. Lenses can be customized according to different vision problems, such as myopia, hyperopia, astigmatism, presbyopia, etc.

[0003] Through searching, CN216657002U was found, which disclosed a pin insertion device for the hinge of the eyeglass leg, which relates to the field of eyeglass technology, and includes a base, the upper surface of which is connected to a slide seat, and the upper surface of the pin insertion block is provided with a plurality of through holes, and the inner sides of the plurality of through holes are all plugged with needles. The fixing bolts of the device penetrate the surface of the positioning platform body, which can facilitate the fixing and taking of the eyeglass leg, and facilitate the positioning of the eyeglass leg during the pin insertion to prevent the needle from being damaged. The cooperation of the anti-slip groove, the first slide groove of the pin insertion block, the second slide groove and the striker can automatically insert the needle into the hinge of the eyeglass leg, and the insertion accuracy is high, which saves labor costs and improves production and processing efficiency.

[0004] However, before using the device in the prior art, multiple needles need to be manually inserted into the through holes on the upper surface of the pin block one by one. Since the through holes on the surface of the pin block are small, it is difficult to align the needles with the through holes, which makes the installation of the needles not only time-consuming but also difficult.

[0005] In addition, when all the needles on the surface of the pin block are used, the machine needs to be stopped to replenish the needles on the surface of the pin block. Since production cannot be continued during the shutdown process, the efficiency of installing the pins on the glasses legs is greatly reduced.

[0006] Therefore, we need a glasses leg positioning and installation device and a positioning method thereof. Summary of the invention

[0007] The object of the present invention is to provide a glasses leg positioning and installation device and a positioning method thereof to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for positioning and installing eyeglass legs, comprising a workbench, the surface of which is respectively provided with an L-shaped support frame, an eyeglass leg fixing mechanism and a needle circulation conveying mechanism, a reciprocating electric push rod is fixedly connected to the lower surface of the L-shaped support frame, and a striking rod is fixedly installed at the lower end of the reciprocating electric push rod;

[0009] The needle circulation conveying mechanism includes an annular support frame, a servo motor, a driving wheel, a driven wheel, a conveying belt, a plurality of loading blocks and a needle limiting assembly. The annular support frame and the servo motor are fixedly connected to the surface of the workbench, the driving wheel is fixedly connected to the output end of the servo motor, the driven wheel is rotatably connected to the surface of the workbench, the conveying belt is sleeved on the outer surface of the driving wheel and the driven wheel, a plurality of loading blocks are equidistantly fixedly connected to the outer surface of the conveying belt, and the lower surface of the loading block is slidably connected to the upper surface of the annular support frame, a needle placement hole is opened on the surface of the loading block, and the upper end of the needle placement hole is funnel-shaped, the needle limiting assembly is detachably clamped and installed on the side of the annular support frame, and the needle limiting assembly corresponds to the eyeglass leg fixing mechanism up and down.

[0010] Preferably, the needle limiting assembly includes a center-shaped plug plate, two first springs and two trapezoidal clamping blocks, a needle channel is provided on the surface of the center-shaped plug plate, two left-right symmetrical clamping block limiting grooves are provided on the inner wall of the needle channel, the trapezoidal clamping block is slidably connected in the clamping block limiting groove, and the first spring is fixedly connected between the trapezoidal clamping block and the center-shaped plug plate.

[0011] Preferably, the surfaces of the trapezoidal clamping blocks are provided with arc-shaped notches, and the arc-shaped notches can fit with the outer surface of the needle.

[0012] Preferably, the temple fixing mechanism comprises a fixing seat, two rubber splints and a plurality of second springs, a temple slot is provided on the surface of the fixing seat, the two rubber splints are respectively slidably connected to the inner walls of the temple slot, and a plurality of second springs are equidistantly fixedly connected between the rubber splint and the fixing seat.

[0013] Preferably, a control panel is fixedly connected to the surface of the workbench, a controller is arranged on the surface of the control panel, a contact switch is arranged on the inner wall of the glasses leg slot, and the contact switch is connected to the controller signal, and the controller is connected to the reciprocating electric push rod signal.

[0014] Preferably, a plurality of light sources corresponding to the loading blocks are equidistantly arranged on the inner side of the conveyor belt, a light source detector for monitoring the position of the light source is arranged on the surface of the control panel, a push rod on-off switch is arranged on the surface of the L-shaped support frame, and the push rod on-off switch is connected in series in the power supply circuit of the reciprocating electric push rod, the light source detector is connected to the controller signal, and the controller is connected to the push rod on-off switch signal.

[0015] Preferably, a conical buffer pad is fixedly connected to the inner wall of the upper end of the needle placement hole.

[0016] Preferably, a needle auxiliary installation mechanism is fixedly connected to the surface of the workbench, and the needle auxiliary installation mechanism includes a plurality of arch frames arranged side by side laterally, and the surfaces of the arch frames are provided with limiting slide grooves, and the inner sides of the plurality of limiting slide grooves are slidably connected with slide plates, and adjacent slide plates are fixedly connected by connecting plates, and a plurality of needle sleeves are fixedly connected to the surface of the slide plates at equal intervals, and a needle feeding hole corresponding to the needle placement hole is provided on the lower surface of the arch frame.

[0017] Preferably, both ends of the side of the needle auxiliary installation mechanism are fixedly connected with ear plates, an adjusting screw is rotatably connected between the ear plates, the outer surface of the adjusting screw is threadedly connected with a movable plate, and the movable plate is fixedly connected to the side of the skateboard.

[0018] A method for positioning a glasses leg positioning and mounting device, comprising the following steps:

[0019] S1, pre-install multiple needles in the needle sleeve in advance. When working, by turning the adjusting screw, the slide plate can be driven to slide in the limiting slide groove of the arch frame. When the needle sleeve moves to the top of the needle discharge hole, the needle will fall from the needle discharge hole, thereby realizing the installation of the needle into the needle placement hole;

[0020] S2, through the operation of the servo motor, can drive the conveyor belt to rotate, and the conveyor belt rotation can drive multiple loading blocks to move, cooperate with the annular support frame to limit the needle in the needle placement hole, and move the needle to the needle channel on the surface of the middle word plug board;

[0021] S3, inserting the glasses leg into the glasses leg slot, and applying elastic force to the rubber clamp by the second spring, so as to clamp and fix the glasses leg;

[0022] S4, when the glasses leg is inserted into the glasses leg slot, it will contact the contact switch, the contact switch will send a signal to the controller, and the controller will send a start signal to the reciprocating electric push rod;

[0023] S5, as the conveyor belt rotates, the light source will rotate together. When the light source moves to the front of the light source detector, the impact rod, the needle in the needle placement hole and the mounting hole of the glasses leg are just aligned with the same axis. At this time, the light source detector detects the light signal and sends a signal to the controller, which then sends a signal to the push rod on-off switch through the controller, so that the power supply circuit of the reciprocating electric push rod can be unblocked;

[0024] S6, when the power supply circuit of the reciprocating electric push rod is unblocked, the controller sends a start signal to the reciprocating electric push rod, so as to start the reciprocating electric push rod to perform reciprocating motion, and the impact rod impacts the needle, so that the needle can be accurately positioned and installed in the mounting hole of the glasses leg.

[0025] Beneficial Effects

[0026] The present invention provides a glasses leg positioning and installation device and a positioning method thereof, which have the following beneficial effects:

[0027] 1. The eyeglass leg positioning and installation device and the positioning method thereof, by setting a loading block and a needle placement hole, because the upper end of the needle placement hole is funnel-shaped, it can play a guiding role, thereby providing convenience for the needle to be inserted into the needle placement hole, effectively reducing the difficulty of needle installation and saving installation time.

[0028] 2. The eyeglass leg positioning and installation device and the positioning method thereof, by providing a needle circulation conveying mechanism, can realize conveying the needle to the bottom of the impact rod of the reciprocating electric push rod while filling the needle into the needle placement hole of the loading block. The entire installation process does not require shutdown, thus achieving continuous production and greatly improving the efficiency of installing the needles on the eyeglass legs.

[0029] 3. The eyeglass leg positioning and installation device and the positioning method thereof, by setting a needle limit assembly, utilizes two first springs to apply elastic force to the trapezoidal clamping blocks, so that the two trapezoidal clamping blocks can be closed together, and the two closed trapezoidal clamping blocks can limit the needle to prevent the needle from falling, and when the impact rod hits the needle, the needle pushes the inclined surface of the trapezoidal clamping block to separate the two trapezoidal clamping blocks, and when the trapezoidal clamping blocks are separated by a sufficient distance, the arc-shaped notch will fit the outer surface of the needle, thereby achieving the limitation of the needle and effectively preventing the needle from tilting. Compared with the anti-sliding block in the prior art, the needle is less likely to get stuck when passing through the trapezoidal clamping block, thereby reducing the failure rate.

[0030] 4. The eyeglass leg positioning and installation device and the positioning method thereof can provide lighting by setting a light source, thereby facilitating operation, and the light source, the light source detector and the push rod on-off switch cooperate with each other, which can effectively avoid the situation where the impact rod and the needle placement hole are not aligned, and the impact rod hits the needle to work.

[0031] 5. The eyeglass leg positioning and installation device and the positioning method thereof, by providing a needle auxiliary installation mechanism, can place needles into multiple needle placement holes at the same time, thereby further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a device for positioning and installing eyeglass legs proposed by the present invention;

[0033] Figure 2 This is a schematic cross-sectional structure diagram of a needle circulation conveying mechanism of a device for positioning and installing eyeglass legs proposed by the present invention;

[0034] Figure 3 A schematic diagram of the three-dimensional structure of a needle limit assembly of a glasses leg positioning and installation device proposed by the present invention;

[0035] Figure 4 A device for positioning and installing glasses legs proposed by the present invention Figure 2 A is a schematic diagram of the enlarged structure;

[0036] Figure 5 A schematic diagram of the three-dimensional structure of a glasses leg fixing mechanism of a glasses leg positioning and mounting device proposed by the present invention;

[0037] Figure 6 A schematic diagram of the three-dimensional structure of a needle-assisted installation mechanism of a glasses leg positioning and installation device proposed by the present invention;

[0038] Figure 7 This is a schematic diagram of the front view structure of a needle auxiliary installation mechanism of a glasses leg positioning and installation device proposed by the present invention;

[0039] Figure 8 This is a schematic diagram of the upward structure of an arch frame of a device for positioning and installing eyeglass legs proposed by the present invention.

[0040] In the figure: 1. workbench; 2. L-shaped support frame; 3. glasses leg fixing mechanism; 4. needle circulation conveying mechanism; 5. reciprocating electric push rod; 6. impact rod; 7. ring support frame; 8. servo motor; 9. driving wheel; 10. driven wheel; 11. conveying belt; 12. loading block; 13. needle limit assembly; 14. needle placement hole; 15. middle word plug board; 16. first spring; 17. trapezoidal clamping block; 18. needle channel; 19. arc notch; 20. Fixed seat; 21. Rubber splint; 22. Second spring; 23. Eyeglass leg slot; 24. Control panel; 25. Controller; 26. Contact switch; 27. Light source; 28. Light source detector; 29. ​​Push rod on / off switch; 30. Conical buffer pad; 31. Arch frame; 32. Limit slide groove; 33. Slide plate; 34. Connecting plate; 35. Needle sleeve; 36. Needle feeding hole; 37. Ear plate; 38. Adjusting screw; 39. Moving plate. DETAILED DESCRIPTION

[0041] 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.

[0042] Example 1, please refer to Figure 1-5The present invention provides a technical solution: a glasses leg positioning and installation device, comprising a workbench 1, the surface of the workbench 1 is respectively provided with an L-shaped support frame 2, a glasses leg fixing mechanism 3 and a needle circulation conveying mechanism 4, the lower surface of the L-shaped support frame 2 is fixedly connected with a reciprocating electric push rod 5, and the lower end of the reciprocating electric push rod 5 is fixedly installed with a collision rod 6; the needle circulation conveying mechanism 4 comprises an annular support frame 7, a servo motor 8, a driving wheel 9, a driven wheel 10, a conveying belt 11, a plurality of loading blocks 12 and a needle limit assembly 13, the annular support frame 7 and the servo motor 8 are fixedly connected to the surface of the workbench 1, the driving wheel 9 is fixedly connected to the output end of the servo motor 8, the driven wheel 10 is rotatably connected to the surface of the workbench 1, and the conveying belt 1 1 is sleeved on the outer surfaces of the driving wheel 9 and the driven wheel 10, a plurality of loading blocks 12 are equidistantly fixedly connected to the outer surface of the conveying belt 11, and the lower surface of the loading block 12 is slidably connected to the upper surface of the annular support frame 7, a needle placement hole 14 is opened on the surface of the loading block 12, and the upper end of the needle placement hole 14 is funnel-shaped, the needle limiting assembly 13 is detachably snap-fitted and installed on the side of the annular support frame 7, and the needle limiting assembly 13 corresponds to the eyeglass leg fixing mechanism 3 up and down, by setting the loading block 12 and the needle placement hole 14, since the upper end of the needle placement hole 14 is funnel-shaped, it can play a guiding role, thereby providing convenience for the needle to be inserted into the needle placement hole 14, effectively reducing the difficulty of needle installation and saving installation time.

[0043] By setting up the needle circulation conveying mechanism 4, it is possible to convey the needle to the bottom of the impact rod 6 of the reciprocating electric push rod 5 while filling the needle into the needle placement hole 14 of the loading block 12. The entire installation process does not require shutdown, thus achieving continuous production and greatly improving the efficiency of installing the needles on the legs of the glasses.

[0044] The needle limiting assembly 13 includes a Chinese-character plug-in plate 15, two first springs 16 and two trapezoidal clamping blocks 17. The surface of the Chinese-character plug-in plate 15 is provided with a needle channel 18. The inner wall of the needle channel 18 is provided with two left-right symmetrical clamping block limiting grooves. The trapezoidal clamping block 17 is slidably connected in the clamping block limiting groove. The first spring 16 is fixedly connected between the trapezoidal clamping block 17 and the Chinese-character plug-in plate 15. The surface of the trapezoidal clamping block 17 is provided with an arc notch 19, and the arc notch 19 can fit with the outer surface of the needle. By setting the needle limiting assembly 13, the two first springs 16 are used to clamp the trapezoidal Block 17 applies elastic force, which can make the two trapezoidal clamping blocks 17 close together. The two trapezoidal clamping blocks 17 after closing can limit the needle head to prevent the needle head from falling. When the impact rod 6 hits the needle head, the needle head pushes the inclined surface of the trapezoidal clamping block 17 to separate the two trapezoidal clamping blocks 17. When the trapezoidal clamping blocks 17 are separated by a sufficient distance, the arc-shaped notch 19 will fit the outer surface of the needle head, thereby limiting the needle head and effectively preventing the needle head from tilting. Compared with the anti-sliding block in the prior art, the needle head is not prone to getting stuck after passing through the trapezoidal clamping block 17, thereby reducing the failure rate.

[0045] Since the first spring 16 has a certain service life, the needle limit assembly 13 can be easily replaced or disassembled for maintenance by using the middle-shaped plug plate 15 and the annular support frame 7 to fit each other.

[0046] The temple fixing mechanism 3 includes a fixing seat 20, two rubber clamps 21 and a plurality of second springs 22. A temple slot 23 is provided on the surface of the fixing seat 20. The two rubber clamps 21 are respectively slidably connected to the inner walls of the temple slot 23. A plurality of second springs 22 are equidistantly fixedly connected between the rubber clamps 21 and the fixing seat 20. By setting the temple fixing mechanism 3, the temple is inserted into the temple slot 23, and the second spring 22 is used to apply elastic force to the rubber clamp 21, so that the temple can be clamped and fixed.

[0047] A control panel 24 is also fixedly connected to the surface of the workbench 1, and a controller 25 is arranged on the surface of the control panel 24. A contact switch 26 is arranged on the inner wall of the glasses leg slot 23, and the contact switch 26 is connected to the controller 25 by signal, and the controller 25 is connected to the reciprocating electric push rod 5 by signal. A plurality of light sources 27 corresponding to the loading blocks 12 are equidistantly arranged on the inner side of the conveyor belt 11, and a light source detector 28 for monitoring the position of the light source 27 is arranged on the surface of the control panel 24. A push rod on-off switch 29 is arranged on the surface of the L-shaped support frame 2, and the push rod on-off switch 29 is connected in series in the power supply circuit of the reciprocating electric push rod 5. The light source detector 28 is connected to the controller 25 by signal, and the controller 25 is connected to the push rod on-off switch 29 by signal. By setting the light source 27, lighting can be performed, thereby facilitating operation, and by the cooperation of the light source 27, the light source detector 28 and the push rod on-off switch 29, the situation that the impact rod 6 and the needle placement hole 14 are not aligned and the impact rod 6 hits the needle can be effectively avoided.

[0048] A conical buffer pad 30 is fixedly connected to the inner wall of the upper end of the needle placement hole 14. By providing the conical buffer pad 30, the needle entering the needle placement hole 14 can be buffered and protected.

[0049] Example 2, please refer to Figure 6-8 , including embodiment 1, and on the basis of embodiment 1, the present invention provides a technical solution: the surface of the workbench 1 is fixedly connected with a needle auxiliary installation mechanism, the needle auxiliary installation mechanism includes a plurality of arch frames 31 arranged side by side in a transverse manner, the surface of the arch frames 31 are provided with limited sliding grooves 32, the inner sides of the plurality of limited sliding grooves 32 are slidably connected with slide plates 33, adjacent slide plates 33 are fixedly connected by connecting plates 34, and the surface of the slide plates 33 is equidistantly fixedly connected with a plurality of needle sleeves 35, the lower surface of the arch frame 31 is provided with a corresponding needle placement hole 14 The needle discharge hole 36 is provided with a needle auxiliary installation mechanism, and the needle can be limited by the needle sleeve 35. The connecting plate 34 is used to connect the adjacent slide plates 33, so that multiple slide plates 33 can form a whole. The slide plates 33 are pushed to slide in the limiting slide groove 32. When the needle sleeve 35 moves to the top of the needle discharge hole 36, the needle in the needle sleeve 35 will fall from the needle discharge hole 36 into the needle placement hole 14, so that needles can be placed in multiple needle placement holes 14 at the same time, thereby further improving work efficiency.

[0050] Both ends of the side of the needle auxiliary installation mechanism are fixedly connected with ear plates 37, and an adjusting screw 38 is rotatably connected between the ear plates 37. The outer surface of the adjusting screw 38 is threadedly connected with a movable plate 39, and the movable plate 39 is fixedly connected to the side of the slide plate 33. By setting the ear plates 37, the adjusting screw 38 and the movable plate 39, the movable plate 39 can be driven to move by rotating the adjusting screw 38, thereby driving the slide plate 33 to slide in the limiting slide groove 32, which provides convenience for the needle in the needle sleeve 35 to move above the needle discharge hole 36.

[0051] A method for positioning a glasses leg positioning and mounting device, comprising the following steps:

[0052] S1, pre-install multiple needles in the needle sleeve 35 in advance. When working, by rotating the adjusting screw 38, the slide plate 33 can be driven to slide in the limiting slide groove 32 of the arch frame 31. When the needle sleeve 35 moves to the top of the needle discharge hole 36, the needle will fall from the needle discharge hole 36, thereby realizing the installation of the needle into the needle placement hole 14;

[0053] S2, through the operation of the servo motor 8, the conveyor belt 11 can be driven to rotate, and the rotation of the conveyor belt 11 can drive the multiple loading blocks 12 to move, and the annular support frame 7 can be used to limit the needle in the needle placement hole 14, so that the needle can be moved into the needle channel 18 on the surface of the middle word plug board 15;

[0054] S3, insert the glasses leg into the glasses leg slot 23, and use the second spring 22 to apply elastic force to the rubber clamp 21 to clamp and fix the glasses leg;

[0055] S4, when the glasses leg is inserted into the glasses leg slot 23, it will contact the contact switch 26, the contact switch 26 will send a signal to the controller 25, and the controller 25 will send a start signal to the reciprocating electric push rod 5;

[0056] S5, as the conveyor belt 11 rotates, the light source 27 rotates together. When the light source 27 moves to the front of the light source detector 28, the impact rod 6, the needle in the needle placement hole 14 and the mounting hole of the glasses leg are just aligned with the same axis. At this time, the light source detector 28 detects the light signal and sends a signal to the controller 25, and then the controller 25 sends a signal to the push rod on-off switch 29, so that the power supply circuit of the reciprocating electric push rod 5 can be unblocked;

[0057] S6, when the power supply circuit of the reciprocating electric push rod 5 is unblocked, the controller 25 sends a start signal to the reciprocating electric push rod 5, so as to start the reciprocating electric push rod 5 to perform reciprocating motion, and the impact rod 6 impacts the needle head, so as to accurately position the needle head and install it in the mounting hole of the glasses leg.

[0058] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the case of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0059] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for positioning and installing glasses legs, comprising a workbench (1), characterized in that: The surface of the workbench (1) is respectively provided with an L-shaped support frame (2), a glasses leg fixing mechanism (3) and a needle circulation conveying mechanism (4); a reciprocating electric push rod (5) is fixedly connected to the lower surface of the L-shaped support frame (2); and a striking rod (6) is fixedly installed at the lower end of the reciprocating electric push rod (5); The needle circulation conveying mechanism (4) comprises an annular support frame (7), a servo motor (8), a driving wheel (9), a driven wheel (10), a conveying belt (11), a plurality of loading blocks (12) and a needle stop assembly (13); the annular support frame (7) and the servo motor (8) are both fixedly connected to the surface of the workbench (1); the driving wheel (9) is fixedly connected to the output end of the servo motor (8); the driven wheel (10) is rotatably connected to the surface of the workbench (1); the conveying belt (11) is sleeved on the driving wheel (9) and the outer surface of the driven wheel (10), a plurality of loading blocks (12) are equidistantly fixedly connected to the outer surface of the conveyor belt (11), and the lower surface of the loading block (12) is slidably connected to the upper surface of the annular support frame (7), a needle placement hole (14) is opened on the surface of the loading block (12), and the upper end of the needle placement hole (14) is funnel-shaped, a needle limit assembly (13) is detachably mounted on the side of the annular support frame (7), and the needle limit assembly (13) corresponds to the eyeglass leg fixing mechanism (3) up and down.

2. The eyeglass leg positioning and installation device according to claim 1, characterized in that: The needle limiting assembly (13) comprises a central plug plate (15), two first springs (16) and two trapezoidal clamping blocks (17); a needle channel (18) is provided on the surface of the central plug plate (15); two left-right symmetrical clamping block limiting grooves are provided on the inner wall of the needle channel (18); the trapezoidal clamping block (17) is slidably connected in the clamping block limiting groove; and the first spring (16) is fixedly connected between the trapezoidal clamping block (17) and the central plug plate (15).

3. The eyeglass leg positioning and installation device according to claim 2, characterized in that: The surfaces of the trapezoidal clamping blocks (17) are each provided with an arc-shaped notch (19), and the arc-shaped notch (19) can fit with the outer surface of the needle.

4. The eyeglass leg positioning and installation device according to claim 1, characterized in that: The eyeglass leg fixing mechanism (3) comprises a fixing seat (20), two rubber clamps (21) and a plurality of second springs (22); the fixing seat (20) is provided with an eyeglass leg clamping groove (23); the two rubber clamps (21) are respectively slidably connected to the inner wall of the eyeglass leg clamping groove (23); and the plurality of second springs (22) are equidistantly fixedly connected between the rubber clamps (21) and the fixing seat (20).

5. The eyeglass leg positioning and installation device according to claim 4, characterized in that: The surface of the workbench (1) is also fixedly connected with a control panel (24), the surface of the control panel (24) is provided with a controller (25), the inner wall of the eyeglass leg slot (23) is provided with a contact switch (26), and the contact switch (26) is connected to the controller (25) by signal, and the controller (25) is connected to the reciprocating electric push rod (5) by signal.

6. The eyeglass leg positioning and installation device according to claim 5, characterized in that: A plurality of light sources (27) corresponding to the loading blocks (12) are arranged at equal intervals on the inner side of the conveyor belt (11); a light source detector (28) for monitoring the position of the light source (27) is arranged on the surface of the control panel (24); a push rod on-off switch (29) is arranged on the surface of the L-shaped support frame (2); and the push rod on-off switch (29) is connected in series in the power supply circuit of the reciprocating electric push rod (5); the light source detector (28) is connected to the controller (25) by signal, and the controller (25) is connected to the push rod on-off switch (29) by signal.

7. The eyeglass leg positioning and installation device according to claim 1, characterized in that: A conical buffer pad (30) is fixedly connected to the inner wall of the upper end of the needle placement hole (14).

8. The eyeglass leg positioning and installation device according to claim 7, characterized in that: The surface of the workbench (1) is fixedly connected to a needle auxiliary installation mechanism, which includes a plurality of arch frames (31) arranged side by side in a transverse manner, the surfaces of the arch frames (31) are provided with limit slide grooves (32), the inner sides of the plurality of limit slide grooves (32) are slidably connected with slide plates (33), adjacent slide plates (33) are fixedly connected via connecting plates (34), and the surface of the slide plates (33) are equidistantly fixedly connected with a plurality of needle sleeves (35), and the lower surface of the arch frame (31) is provided with needle discharge holes (36) corresponding to the needle placement holes (14).

9. The eyeglass leg positioning and installation device according to claim 8, characterized in that: Both ends of the side of the needle auxiliary installation mechanism are fixedly connected with ear plates (37), an adjusting screw (38) is rotatably connected between the ear plates (37), a movable plate (39) is threadedly connected to the outer surface of the adjusting screw (38), and the movable plate (39) is fixedly connected to the side of the slide plate (33).

10. A positioning method for a glasses leg positioning and mounting device based on any one of 1-9, characterized in that: The following steps are involved: S1, multiple needles are pre-installed in the needle sleeve (35) in advance. When working, by rotating the adjusting screw (38), the slide plate (33) can be driven to slide in the limiting slide groove (32) of the arch frame (31). When the needle sleeve (35) moves above the needle discharge hole (36), the needle will fall from the needle discharge hole (36), thereby realizing the installation of the needle into the needle placement hole (14); S2, through the operation of the servo motor (8), the conveying belt (11) can be driven to rotate, and the rotation of the conveying belt (11) can drive the multiple loading blocks (12) to move, and cooperate with the annular support frame (7) to limit the needle in the needle placement hole (14), so that the needle can be moved into the needle channel (18) on the surface of the middle word plug board (15); S3, inserting the glasses leg into the glasses leg clamping slot (23), and applying elastic force to the rubber clamping plate (21) by using the second spring (22), so as to clamp and fix the glasses leg; S4, when the glasses leg is inserted into the glasses leg slot (23), it will contact the contact switch (26), the contact switch (26) will send a signal to the controller (25), and the controller (25) will send a start signal to the reciprocating electric push rod (5); S5, as the conveyor belt (11) rotates, the light source (27) rotates together. When the light source (27) moves to the front of the light source detector (28), the impact rod (6), the needle in the needle placement hole (14) and the mounting hole of the glasses leg are just aligned with the same axis. At this time, the light source detector (28) detects the light signal and sends a signal to the controller (25), and then the controller (25) sends a signal to the push rod on-off switch (29), so that the power supply circuit of the reciprocating electric push rod (5) can be unblocked; S6, when the power supply circuit of the reciprocating electric push rod (5) is unblocked, the controller (25) sends a start signal to the reciprocating electric push rod (5), so that the reciprocating electric push rod (5) can be started to perform reciprocating motion, and the impact rod (6) can be used to impact the needle head, so that the needle head can be accurately positioned and installed in the installation hole of the glasses leg.

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