Quick die changing device in optical element machining

Abstract

The utility model belongs to the technical field of optical elements, and discloses a quick die changing device in optical element machining, which comprises a base arranged on a molding press workbench, two forming dies are slidably arranged on the base along the length direction of the base, and a T-shaped boss with the length direction consistent with that of the base is arranged in the middle of the base. A T-shaped groove is correspondingly formed in the bottom of the forming mold, and a positioning assembly for positioning the forming mold is further arranged in the middle of the base. In the working process, a curved-surface prefabricated part is placed on one forming mold for mold pressing, after mold pressing is completed, the forming mold slides to the side to be cooled, the other forming mold moves to the working position at the same time, then the next mold pressing action can be directly carried out, and therefore the two forming molds are alternately replaced, and the mold pressing efficiency is improved. And the die pressing work can be continuously carried out, so that the working efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical element technical field, especially optical element processing in quick change mould device of a kind of. BACKGROUND

[0002] At present, optical glass precision mould pressing technology is a kind of high-precision optical element processing technology, which is to put softened glass into high-precision mould, under the conditions of heating and pressurization and oxygen-free, to directly mould forming optical parts meeting use requirements once.

[0003] In the Chinese patent application for invention with publication No. CN116924662A, a mould pressing forming method is disclosed, which comprises: assembling a curved preform with a mould, the mould comprising an upper mould and a forming mould, and placing the curved preform on the positioning part in the center of the forming mould; placing the upper mould above the curved preform, and the upper mould and the forming mould are provided with corresponding single-mould multi-cavity structures; heating and softening the curved preform; applying a first pressure to the curved preform through the upper mould, so that the softened curved preform is uniformly distributed from the center to the periphery, and an array optical element is obtained; reducing the heating temperature, and simultaneously applying a second pressure to the array optical element through the upper mould until the array optical element cools down to a predetermined temperature; stopping the pressure application, and after the array optical element cools down to room temperature, demoulding and taking out the array optical element.

[0004] According to the related technology in the above, the inventors believe that the following defects exist: after the mould pressing is completed, the array optical element needs to be taken out from the mould after it cools down to room temperature, and then a new curved preform needs to be placed in the mould for the next processing, and the array optical element needs a certain time to cool down to room temperature, which makes the above-mentioned scheme unable to produce continuously, resulting in low production efficiency. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a quick mould changing device in optical element processing.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a quick mould changing device in optical element processing, comprising a base provided on the workbench of a mould pressing machine, two forming moulds are slidably provided on the base along the length direction of the base, a T-shaped boss with the same length direction as the length direction of the base is provided in the middle of the base, a T-shaped groove is provided in the bottom of the forming mould corresponding to the T-shaped boss, and a positioning assembly for positioning the forming mould is further provided in the middle of the base.

[0007] By adopting the technical scheme, two forming molds are arranged on the base in a sliding mode, during work, the curved preform is placed on one of the forming molds for die pressing, after die pressing, the forming mold is slid to the side for cooling, the other forming mold is simultaneously moved to the working position, and then the next die pressing operation can be directly performed, thus the two forming molds are alternately replaced, the die pressing work can be continuously performed, and thus the work efficiency is greatly improved; the T-shaped boss and the positioning assembly are further arranged, the forming mold in the working position is positioned, the stability of the forming mold during die pressing is ensured, and thus the processing quality is ensured.

[0008] Further, the base is provided with vertical plates on both sides in the length direction and side plates on both sides in the width direction, two parallel and spaced-apart lead screws are rotatably arranged between the vertical plates, two spaced-apart sliding blocks are spirally arranged on the lead screws, two sliding grooves arranged along the length direction of the lead screws are arranged at intervals at the bottom of the forming mold, the sliding grooves are slidably arranged on the corresponding sliding blocks, and the base is further provided with a driving assembly for driving the rotation of the lead screws.

[0009] By adopting the above technical scheme, the vertical plates, the side plates, the lead screws, the sliding blocks, and the driving assembly are arranged, the driving assembly drives the rotation of the lead screws, thereby driving the synchronous movement of the two sliding blocks on the lead screws, and further driving the movement of the forming mold.

[0010] Further, the driving assembly comprises a driving motor on the base, the output shaft of the driving motor is coaxially connected with the end of one of the lead screws, the two lead screws are each provided with a synchronous wheel at the end close to the driving motor, and the two synchronous wheels are connected through a synchronous belt.

[0011] By adopting the above technical scheme, the driving motor, the synchronous wheels, and the synchronous belt are arranged, the driving motor drives the rotation of the lead screw connected therewith and the synchronous wheel thereon, the synchronous wheel drives the rotation of the synchronous wheel on the other lead screw through the synchronous belt, thereby driving the rotation of the other lead screw, and the synchronous rotation of the two lead screws is realized.

[0012] Further, the middle section of the upper surface of the side plate is spaced inwardly along its length direction to form a first groove and a second groove, the first groove and the second groove are respectively provided with a first positioning shaft and a second positioning shaft rotatingly, the first positioning shaft and the second positioning shaft are horizontally arranged and perpendicular to the length direction of the side plate, the positioning assembly comprises a first positioning plate and a second positioning plate arranged on the first positioning shaft and the second positioning shaft, the first positioning plate and the second positioning plate are overall quarter circular arc plates and the right angle end is connected with the corresponding positioning shaft, the inner end of the first positioning shaft extends through the side plate to the direction of the slider and the end is provided with a first connecting rod, one end of the first connecting rod away from the first positioning shaft is provided with a first sliding rod, the first sliding rod is parallel to the first positioning shaft, the inner end of the second positioning shaft extends through the side plate to the direction of the slider and the end is provided with a second connecting rod, one end of the second connecting rod away from the second positioning shaft is provided with a second sliding rod, the second sliding rod is parallel to the second positioning shaft, the horizontal height of the first positioning shaft is higher than that of the second positioning shaft, the slider on the left side is provided with a first slot and a second slot arranged upward and downward near the side plate, the first slot is divided into a first straight slot and a first arc slot from left to right, the first straight slot extends from the left side of the slider to the right, the first arc slot is a quarter circular arc slot extending from the right end of the first straight slot to the upper right and the center of the circle is below, the second slot is divided into a second arc slot and a second straight slot from left to right, the second arc slot is a quarter circular arc slot extending from the left side of the slider to the upper right and the center of the circle is above, the second straight slot extends from the right end of the second arc slot to the right side of the slider, the slider on the right side is provided with a third slot and a fourth slot arranged upward and downward near the side plate, the third slot is divided into a third straight slot and a third arc slot from left to right, the third straight slot extends from the left side of the slider to the right, the third arc slot is a quarter circular arc slot extending from the right end of the third straight slot to the lower right and the center of the circle is above, the fourth slot is divided into a fourth arc slot and a fourth straight slot from left to right, the fourth arc slot is a quarter circular arc slot extending from the left side of the slider to the lower right and the center of the circle is below, the fourth straight slot extends from the right end of the fourth arc slot to the right side of the slider, the first slot and the third slot are matched with the first sliding rod, the second slot and the fourth slot are matched with the second sliding rod.

[0013] By adopting the technical scheme, the first groove, the second groove, the first positioning shaft, the second positioning shaft, the first positioning plate, the second positioning plate, the first connecting rod, the first sliding rod, the second connecting rod, the second sliding rod, the first slot, the second slot, the first straight groove, the first arc-shaped groove, the second straight groove, the second arc-shaped groove, the third slot, the fourth slot, the third straight groove, the third arc-shaped groove, the fourth straight groove, and the fourth arc-shaped groove are arranged, when the left forming die is completed in the working position, the two forming dies are synchronously moved to the left, the first sliding rod moves through the first arc-shaped groove, the second sliding rod moves through the second arc-shaped groove, the first sliding rod and the second sliding rod drive the first connecting rod and the second connecting rod to move respectively, so as to drive the first positioning shaft and the second positioning shaft to rotate respectively, and then drive the first positioning plate and the second positioning plate to rotate to the two sides respectively, so as to release the restriction on the forming die, the slider drives the forming die to move, then the second sliding rod moves through the second straight groove, and the first sliding rod moves through the third straight groove, in this process, the first positioning plate and the second positioning plate do not move, until the first sliding rod enters the third arc-shaped groove and the second sliding rod enters the fourth arc-shaped groove, the first sliding rod and the second sliding rod drive the first connecting rod and the second connecting rod to move respectively, so as to drive the first positioning shaft and the second positioning shaft to rotate respectively, and then drive the first positioning plate and the second positioning plate to rotate to the middle, when the right slider drives the forming die to enter the working position, the first positioning plate and the second positioning plate restrict the forming die, the curved preform is placed on the forming die, and the next time of die pressing is started, after completion, the reverse movement is realized, and continuous production is realized.

[0014] Further, the two ends of the T-shaped boss in the length direction are semicircular structures.

[0015] By adopting the technical scheme, the two ends of the T-shaped boss in the length direction are set as semicircular structures, so that the T-shaped boss is convenient to cooperate with the T-shaped groove on the forming die.

[0016] Further, the bottom surface of the slider is in sliding contact with the base.

[0017] By adopting the technical scheme, the bottom surface of the slider is in contact with the base, so that the pressure received by the forming die during die pressing is directly transmitted to the base through the slider, the pressure received by the lead screw is reduced, and the deformation of the lead screw is reduced.

[0018] Further, the right-angled ends of the first positioning plate and the second positioning plate are all round structures, when one of the right-angled edges of the first positioning plate and the second positioning plate is located in the vertical direction, the right-angled edge is respectively in contact with the groove wall of the first groove and the second groove.

[0019] By adopting the above technical scheme, the right-angle end of the first positioning plate and the right-angle end of the second positioning plate are both in a round corner structure, so that rotation can be better realized, and when one of the right-angle edges of the first positioning plate and the second positioning plate is located in the vertical direction, the right-angle edge is respectively attached to the groove wall of the first groove and the second groove, so that the first sliding rod and the second sliding rod can be conveniently limited in position.

[0020] Further, the interval between the first groove and the second groove is equal to the length of the side of the forming die in the length direction of the base.

[0021] By adopting the above technical scheme, the interval between the first groove and the second groove is equal to the length of the side of the forming die in the movement direction, so that the first positioning plate and the second positioning plate can be guaranteed to abut against the forming die after rotation.

[0022] In summary, the utility model has the following beneficial effects:

[0023] In the application, two forming dies are slidably arranged on the base, and when working, a curved surface prefabricated part is placed on one of the forming dies to be die pressed, after die pressing, the forming die is slid to the side to be cooled, and the other forming die is simultaneously moved to the working position, and then the next die pressing operation can be directly performed, so that the two forming dies are alternately replaced, the die pressing work can be continuously performed, and thus the work efficiency is greatly improved; the T-shaped boss and the positioning assembly are further arranged, the forming die in the working position is positioned, the stability of the forming die during die pressing is guaranteed, and thus the processing quality is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structure schematic view of the utility model embodiment installed on a die press;

[0025] Figure 2 is a whole structure schematic view of the utility model embodiment;

[0026] Figure 3 is a cross section schematic view of the utility model embodiment;

[0027] Figure 4 is a positioning assembly structure schematic view of the utility model embodiment;

[0028] Figure 5 is a positioning assembly cross section schematic view of the utility model embodiment;

[0029] Figure 6 is a position change schematic view of the forming die and the sliding block in the sliding process in the working process of the utility model embodiment.

[0030] In the diagram: 10. Base; 11. Vertical plate; 12. Side plate; 13. Lead screw; 14. First groove; 15. Second groove; 20. Slider; 21. Molding mold; 22. First strip groove; 221. First straight groove; 222. First arc groove; 23. Second strip groove; 231. Second arc groove; 232. Second straight groove; 24. Third strip groove; 241. Third straight groove; 242. Third arc groove; 25. Fourth strip groove; 251. Fourth arc groove; 252. Fourth straight groove; 30. T-shaped boss; 40. Drive assembly; 41. Drive motor; 42. Synchronous pulley; 43. Synchronous belt; 50. Positioning assembly; 51. First positioning shaft; 52. Second positioning shaft; 53. First positioning plate; 54. Second positioning plate; 55. First connecting rod; 56. Second connecting rod; 57. First sliding rod; 58. Second sliding rod. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] like Figures 1-6 As shown in the embodiment of this application, a quick mold-changing device for optical component processing is disclosed. It includes a base 10 mounted on the worktable of a molding machine, on which a molding die 21, a T-shaped boss 30, and a positioning component 50 are slidably mounted. Two molding dies 21 are provided, each with a molding hole on its top surface. A pressing device that cooperates with the molding die 21 is located on the top of the molding machine. During operation, a curved preform is placed on one of the molding dies 21 for molding. After molding, the molding die 21 is slid aside for cooling, while the other molding die 21 moves to the working position, allowing for the next molding operation. This alternating use of the two molding dies ensures continuous molding work, significantly increasing work efficiency.

[0033] Specifically, the base 10 is provided with vertical plates 11 on both sides in the length direction and side plates 12 on both sides in the width direction. Two parallel and spaced apart lead screws 13 are rotatably arranged between the two vertical plates 11. Two spaced apart sliding blocks 20 are helically arranged on the lead screws 13. The bottom of the forming die 21 is provided with two sliding grooves arranged along the length direction of the lead screws 13, and the forming die 21 is slidingly arranged on the corresponding sliding blocks 20 through the sliding grooves. In use, the forming die 21 is directly placed on the sliding blocks 20 through the sliding grooves, facilitating the disassembly and installation of the forming die 21. When different optical elements need to be processed, the forming die 21 on the sliding blocks 20 can be directly removed to replace the corresponding type of die. In addition, after the die pressing is completed, when there are some optical elements in the forming hole of the forming die 21 that are difficult to remove or have residues, the forming die 21 can be directly removed for cleaning. When cleaning, a new forming die 21 can be quickly replaced, without affecting the normal work of the die pressing machine.

[0034] Further, the bottom surface of the sliding block 20 is in sliding contact with the base 10, so that the pressure received by the forming die 21 during die pressing is directly transmitted to the base 10 through the sliding block 20, reducing the pressure received by the lead screws 13 and reducing the deformation of the lead screws 13.

[0035] The driving assembly 40 is arranged on the base 10 for driving the rotation of the lead screws 13, and includes a driving motor 41, a synchronous wheel 42 and a synchronous belt 43. The output shaft of the driving motor 41 is coaxially connected with the end of one of the lead screws 13. The two lead screws 13 are each provided with a synchronous wheel 42 near the end adjacent to the driving motor 41, and the two synchronous wheels 42 are connected by the synchronous belt 43. The driving motor 41 drives the rotation of the lead screw 13 connected therewith and the synchronous wheel 42 thereon. The synchronous wheel 42 drives the synchronous rotation of the other lead screw 13 through the synchronous belt 43, thereby driving the synchronous movement of the two sliding blocks 20 on the lead screws 13, and further driving the movement of the forming die 21.

[0036] The positioning assembly 50 comprises a first positioning shaft 51, a second positioning shaft 52, a first positioning plate 53, a second positioning plate 54, a first connecting rod 55, a first sliding rod 57, a second connecting rod 56, and a second sliding rod 58. The first recess 14 and the second recess 15 are formed in the middle section of the plate surface of the side plate 12 along the length direction of the side plate 12. The first positioning shaft 51 and the second positioning shaft 52 are horizontally arranged and located in the first recess 14 and the second recess 15, respectively. The first positioning plate 53 and the second positioning plate 54 are quarter-circular arc plates, and the right-angled ends thereof are connected with the first positioning shaft 51 and the second positioning shaft 52, respectively. The inner end of the first positioning shaft 51 extends through the side plate 12 towards the sliding block 20, and the end portion thereof is provided with the first connecting rod 55. The end of the first connecting rod 55 away from the first positioning shaft 51 is provided with the first sliding rod 57, which is parallel to the first positioning shaft 51. The inner end of the second positioning shaft 52 extends through the side plate 12 towards the sliding block 20, and the end portion thereof is provided with the second connecting rod 56. The end of the second connecting rod 56 away from the second positioning shaft 52 is provided with the second sliding rod 58, which is parallel to the second positioning shaft 52. The horizontal height of the first positioning shaft 51 is higher than that of the second positioning shaft 52. When one of the right-angled edges of the first positioning plate 53 and the second positioning plate 54 is located in the vertical direction, the right-angled edge is in contact with the groove wall of the first recess 14 or the second recess 15, so as to facilitate the positioning of the first sliding rod 57 and the second sliding rod 58. In addition, the right-angled ends of the first positioning plate 53 and the second positioning plate 54 are rounded, so that the rotation thereof can be better realized. In the specific arrangement, the distance between the first recess 14 and the second recess 15 is equal to the length of the forming die 21 in the length direction of the base 10, so as to ensure that the first positioning plate 53 and the second positioning plate 54 are in contact with the forming die 21 after rotation, and the movement of the forming die 21 in the left-right direction is limited.

[0037] The left slider 20 is provided with a first slot 22 and a second slot 23 arranged in sequence from top to bottom, the first slot 22 is divided into a first straight slot 221 and a first arc slot 222 from left to right, the first straight slot 221 extends from the left side of the slider 20 to the right side, the first arc slot 222 is a quarter of a circular arc slot extending from the right end of the first straight slot 221 to the upper right and the center of the circular arc is below the first arc slot 222, the second slot 23 is divided into a second arc slot 231 and a second straight slot 232 from left to right, the second arc slot 231 is a quarter of a circular arc slot extending from the left side of the slider 20 to the upper right and the center of the circular arc is above the second arc slot 231, the second straight slot 232 extends from the right end of the second arc slot 231 to the right side of the slider 20; the right slider 20 is provided with a third slot 24 and a fourth slot 25 arranged in sequence from top to bottom, the third slot 24 is divided into a third straight slot 241 and a third arc slot 242 from left to right, the third straight slot 241 extends from the left side of the slider 20 to the right side, the third arc slot 242 is a quarter of a circular arc slot extending from the right end of the third straight slot 241 to the lower right and the center of the circular arc is above the third arc slot 242, the fourth slot 25 is divided into a fourth arc slot 251 and a fourth straight slot 252 from left to right, the fourth arc slot 251 is a quarter of a circular arc slot extending from the left side of the slider 20 to the lower right and the center of the circular arc is below the fourth arc slot 251, the fourth straight slot 252 extends from the right end of the fourth arc slot 251 to the right side of the slider 20; the first slot 22 and the third slot 24 are matched with the first sliding rod 57, and the second slot 23 and the fourth slot 25 are matched with the second sliding rod 58.When the left forming die 21 is completed in the working position, the two groups of forming die 21 are synchronously moved to the left, the first sliding rod 57 passes through the first arc-shaped slot 222, the second sliding rod 58 passes through the second arc-shaped slot 231, the first sliding rod 57 and the second sliding rod 58 drive the first connecting rod 55 and the second connecting rod 56 to move, respectively, so as to drive the first positioning shaft 51 and the second positioning shaft 52 to rotate, respectively, and then drive the first positioning plate 53 and the second positioning plate 54 to rotate to the two sides, respectively, so as to release the restriction on the forming die 21, the slider 20 drives the forming die 21 to move, and then the second sliding rod 58 passes through the second straight slot 232 and the first sliding rod 57 passes through the third straight slot 241, in this process, the first positioning plate 53 and the second positioning plate 54 do not move, until the first sliding rod 57 enters the third arc-shaped slot 242 and the second sliding rod 58 enters the fourth arc-shaped slot 251, the first sliding rod 57 and the second sliding rod 58 drive the first connecting rod 55 and the second connecting rod 56 to move, respectively, so as to drive the first positioning shaft 51 and the second positioning shaft 52 to rotate, respectively, and then drive the first positioning plate 53 and the second positioning plate 54 to rotate to the middle, respectively, when the right slider 20 drives the forming die 21 to enter the working position, the first positioning plate 53 and the second positioning plate 54 restrict the forming die 21, the curved surface prefabricated part is placed on the forming die 21, and the next time of molding production is started, after completion, the reverse movement is realized, and the continuous production is realized.

[0038] The T-shaped boss 30 is arranged in the middle of the base 10, the length direction of the T-shaped boss 30 is consistent with the length direction of the base 10, a T-shaped slot is arranged at the bottom of the forming die 21, and the two ends in the length direction of the T-shaped boss 30 are semicircular structures, so that the T-shaped boss 30 is matched with the T-shaped slot on the forming die 21. The T-shaped boss 30 is matched with the T-shaped slot to position the forming die 21 in the working position, so as to ensure the stability of the forming die 21 in the molding process, and then the machining quality is ensured.

[0039] The principle of using the quick die changing device in the optical element processing in the embodiment is as follows: the left forming die 21 is moved to the working position of the molding machine, the curved preform is placed in the forming hole of the forming die 21, the molding machine starts to work, after the molding is completed, the driving motor 41 drives the synchronous wheel 42 to rotate, the two lead screws 13 are synchronously rotated through the synchronous belt 43, so that the two groups of sliding blocks 20 are moved to the left, at this time, the first sliding rod 57 rotates through the first arc-shaped slot 222, the second sliding rod 58 rotates through the second arc-shaped slot 231, the first positioning plate 53 and the second positioning plate 54 rotate to the two sides respectively, the restriction on the forming die 21 is released, the sliding block 20 drives the forming die 21 to move, then the second sliding rod 58 rotates through the second straight slot 232, the first sliding rod 57 rotates through the third straight slot 241, in this process, the first positioning plate 53 and the second positioning plate 54 do not move, until the first sliding rod 57 enters the third arc-shaped slot 242 and the second sliding rod 58 enters the fourth arc-shaped slot 251, the forming die 21 driven by the right sliding block 20 enters the working position, the first positioning plate 53 and the second positioning plate 54 restrict the forming die 21, then the new curved preform is placed, and the next molding action is continued. After the next processing is completed, the driving motor 41 is reversed, the right sliding block 20 drives the forming die 21 to leave the molding position, and the left sliding block 20 drives the forming die 21 to the working position of the molding machine to continue to work. In this way, the two forming dies 21 are alternately replaced, so that the molding work can be continuously carried out, and the working efficiency is improved.

[0040] It should be noted that, in the present application, "left" and "right" refer to the left hand side of the operator facing the molding machine, and the right hand side of the operator facing the molding machine.

[0041] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A quick change tooling device in optical element processing, characterized by: The application relates to a bottom base (10) arranged on a workbench of a mould pressing machine, two forming moulds (21) are slidably arranged on the bottom base (10) along the length direction of the bottom base (10), a T-shaped boss (30) is arranged in the middle of the bottom base (10) and has the same length direction as the bottom base (10), a T-shaped groove is arranged at the bottom of the forming mould (21), and a positioning assembly (50) is arranged in the middle of the bottom base (10) and used for positioning the forming mould (21).

2. The quick changeover device for optical element processing according to claim 1, characterized in that: Two vertical plates (11) are arranged on the length direction of the bottom base (10), two side plates (12) are arranged on the width direction of the bottom base (10), two parallel and spaced-apart screw rods (13) are rotatably arranged between the two vertical plates (11), two spaced-apart sliding blocks (20) are spirally arranged on the screw rods (13), two sliding grooves are arranged on the bottom of the forming mould (21) and arranged along the length direction of the screw rods (13), the sliding grooves are slidably arranged on the corresponding sliding blocks (20), and a driving assembly (40) is further arranged on the bottom base (10) and used for driving the screw rods (13) to rotate.

3. The quick changeover device for optical element processing according to claim 2, characterized in that: The driving assembly (40) comprises a driving motor (41) arranged on the bottom base (10), the output shaft of the driving motor (41) is coaxially connected with the end of one of the screw rods (13), the two screw rods (13) are provided with synchronous wheels (42) at the end close to the driving motor (41), and the two synchronous wheels (42) are connected through a synchronous belt (43).

4. The quick changeover device for optical element processing according to claim 2, wherein: The middle section of the upper surface of the side plate (12) is provided with a first groove (14) and a second groove (15) spaced inward along the length direction, the first groove (14) and the second groove (15) are respectively provided with a first positioning shaft (51) and a second positioning shaft (52) rotatingly arranged, the first positioning shaft (51) and the second positioning shaft (52) are horizontally arranged and perpendicular to the length direction of the side plate (12), the positioning assembly (50) comprises a first positioning plate (53) and a second positioning plate (54) arranged on the first positioning shaft (51) and the second positioning shaft (52), the first positioning plate (53) and the second positioning plate (54) are overall quarter circular arc plates and the right angle ends are connected with the corresponding positioning shafts, the inner end of the first positioning shaft (51) extends through the side plate (12) to the direction of the sliding block (20) and the end is provided with a first connecting rod (55), one end of the first connecting rod (55) away from the first positioning shaft (51) is provided with a first sliding rod (57), the first sliding rod (57) is parallel to the first positioning shaft (51), the inner end of the second positioning shaft (52) extends through the side plate (12) to the direction of the sliding block (20) and the end is provided with a second connecting rod (56), one end of the second connecting rod (56) away from the second positioning shaft (52) is provided with a second sliding rod (58), the second sliding rod (58) is parallel to the second positioning shaft (52), the horizontal height of the first positioning shaft (51) is higher than that of the second positioning shaft (52), the sliding block (20) located on the left side is provided with a first slot (22) and a second slot (23) arranged in the up-down direction on the side close to the side plate (12), the first slot (22) is divided into a first straight slot (221) and a first arc slot (222) from left to right, the first straight slot (221) extends from the left side of the sliding block (20) to the right, the first arc slot (222) is a quarter circular arc slot extending from the right end of the first straight slot (221) to the upper right and the center of the circle is below, the second slot (23) is divided into a second arc slot (231) and a second straight slot (232) from left to right, the second arc slot (231) is a quarter circular arc slot extending from the left side of the sliding block (20) to the upper right and the center of the circle is above, the second straight slot (232) extends from the right end of the second arc slot (231) to the right side of the sliding block (20).The third and fourth strip-shaped grooves (24, 25) are arranged on the side of the slider (20) close to the side plate (12), the third strip-shaped groove (24) is divided into a third straight groove (241) and a third arc-shaped groove (242) from left to right, the third straight groove (241) extends rightward from the left side of the slider (20), the third arc-shaped groove (242) is a quarter of a circular arc groove extending rightward and downward from the right end of the third straight groove (241) and the center of the circular arc groove is above the third arc-shaped groove (242), the fourth strip-shaped groove (25) is divided into a fourth arc-shaped groove (251) and a fourth straight groove (252) from left to right, the fourth arc-shaped groove (251) is a quarter of a circular arc groove extending rightward and downward from the left side of the slider (20) and the center of the circular arc groove is below the fourth arc-shaped groove (251), the fourth straight groove (252) extends rightward from the right end of the fourth arc-shaped groove (251) to the right side of the slider (20); the first strip-shaped groove (22) and the third strip-shaped groove (24) are matched with the first sliding rod (57), and the second strip-shaped groove (23) and the fourth strip-shaped groove (25) are matched with the second sliding rod (58).

5. The quick changeover device for optical element processing according to claim 1, wherein: The two ends of the T-shaped boss (30) in the length direction are semicircular structures.

6. The quick changeover device for optical element processing according to claim 2, wherein: The bottom surface of the sliding block (20) is in sliding contact with the bottom base (10).

7. The quick changeover device for optical element processing according to claim 4, wherein: The right-angle ends of the first positioning plate (53) and the second positioning plate (54) are circular structures, when one of the right-angle edges of the first positioning plate (53) and the second positioning plate (54) is located in the vertical direction, the right-angle edge is respectively matched with the groove wall of the first groove (14) and the second groove (15).

8. The quick changeover device for optical element processing according to claim 7, characterized in that: The distance between the first groove (14) and the second groove (15) is equal to the side length of the forming mould (21) in the length direction of the bottom base (10).

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