Precise cutting device for optical element

Abstract

The invention discloses an optical element precise cutting device, and relates to the field of cutting equipment, the optical element precise cutting device comprises a base, the upper surface of the base is provided with a cutter set, and the cutter set is arranged upwards; the material placing platform is arranged on the base in a lifting mode, a material placing groove is formed in the upper surface of the material placing platform, a through groove is formed in the material placing platform in the vertical direction in a penetrating mode, the through groove and the material placing groove are arranged adjacently, the through groove and the cutter set are arranged correspondingly, and at least part of the cutter set is located in the through groove; the material pressing assembly comprises a material pressing head, the material pressing head is arranged in a lifting mode, the material pressing head corresponds to the material containing groove, and a through hole is formed in the bottom of the material pressing head; the base is arranged on the sliding rail in a sliding mode and at least provided with a cutting position and a feeding position, when the base is located at the cutting position, the material containing groove is located under the material pressing head, and the through hole corresponds to the through groove. When the material pressing head descends, the lens is pressed in the material containing groove, displacement of the lens in the cutting process is reduced, the cutting problem caused by deviation is reduced, and the regularity of the cut edge is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of cutting equipment, and in particular to a precision cutting device for optical elements. Background Art

[0002] In the field of optical lens manufacturing, lenses made of rubber materials such as silicone and thermoplastic elastomers have become core components in scenarios such as automotive adaptive lighting, medical endoscopes, and flexible optical modules for consumer electronics due to their excellent flexibility, weather resistance, and impact resistance. To improve production efficiency and reduce assembly errors, this type of lens generally adopts a multi-cavity mold integrated injection molding process, which integrates multiple lenses with connecting runners and gate structures into a single injection molded part, and then separates the individual lenses after demolding. However, this process has inherent defects: runner residue and injection molding flash will inevitably remain at the edge of the lens. These residues will not only cause the actual size of the lens to exceed the assembly tolerance of ±0.02mm, but may also generate stray light due to irregular edges, interfering with the preset optical path of the lens. Therefore, the removal of residues becomes a key process to ensure product quality.

[0003] However, existing cutting equipment struggles to meet the precision cutting demands of rubber lenses. Mainstream equipment often uses a single wide-width cutter or knife assembly to simultaneously cut the excess material from the edges of multiple lenses on a one-piece molded part. Simultaneously cutting multiple lenses requires applying a large, concentrated cutting force. If the equipment's holding assembly fails to provide a uniform and stable grip on the lenses, or if there's a deviation in the contact angle between the cutter and the lens, the cutter can be biased by the lateral force component and deviate from the preset cutting line. This can cause all lenses cut simultaneously to be scrapped, such as edge cracking and optical surface scratches, severely reducing production yield. Rubber lenses are susceptible to elastic deformation during cutting due to the cutting force of the cutter, and the "one-size-fits-all" single-cut method cannot adapt to the material's rebound properties. The material is squeezed and deformed the instant the cutter cuts, and after the cutter has passed, the deformed area quickly rebounds, causing the actual cutting position to deviate from the preset position, ultimately resulting in over- or undercutting. Therefore, a cutting device that can meet lens edge precision is needed. Summary of the Invention

[0004] In order to improve the accuracy of lens cutting, the present application provides an optical element precision cutting device.

[0005] The present application provides an optical element precision cutting device that adopts the following technical solutions: The cutting tool of claim 1, wherein the guide rail is provided on the upper surface of the base and the guide rail is provided with a cutting tool, the guide rail being arranged to move upward, the guide rail being arranged to move upward, the guide rail being arranged to move upward, the guide rail being arranged to move upward, the guide rail being arranged to move upward, the guide rail being arranged to move downward, the guide rail being arranged to move upward ...

[0006] By adopting the above technical solution, the slide rail of the sliding platform realizes the switching of the base between the cutting position and the loading position, so that the loading operation is separated from the cutting operation, reducing the interference of the equipment on the operator during the cutting process, improving the operation safety, and reducing the interference of the external environment on the lens during the cutting process; the lens is placed in the material feeding trough, and the pressing head presses the lens in the material feeding trough when it descends, reducing the displacement of the lens during cutting; the knife group passes through the through groove and through hole in sequence to accurately cut the edge of the clamped lens, effectively reducing the problem of over-cutting or under-cutting due to positioning deviation, and ensuring the regularity of the cutting edge.

[0007] Optionally, a side panel is provided on the sliding platform, and the side panel is arranged parallel to the slide rail. A limit bar is provided on the side of the side panel close to the slide rail. When the base is located at the loading position, the limit bar is located between the base and the loading platform.

[0008] By adopting the above technical solution, when the base is in the loading position, the limit bar is inserted between the base and the loading platform to form a rigid support to limit the descent of the loading platform, thereby preventing the operator from accidentally touching the loading platform or causing the loading platform to move downward due to gravity, and preventing the knife group from being excessively exposed from the through slot and scratching the operator or damaging the components to be cut, while protecting the knife group's cutting edge from collision damage and extending the service life of the knife group.

[0009] Optionally, a support column and a positioning piece are provided on the side of the side panel close to the slide rail, and the limit bar is rotatably connected to the side panel close to one end of the pressing assembly, and the limit bar has a horizontal position and a vertical position when rotating; when the limit bar is in the horizontal position, the lower surface of the limit bar is against the support column; when the base is in the cutting position, the limit bar can be rotated to a vertical position, and the positioning piece cooperates with one end of the limit bar to fix the limit bar.

[0010] By adopting the technical scheme, the limiting strip switches between the horizontal position and the vertical position through the rotating structure, and the supporting column provides stable support for the limiting strip in the horizontal state, ensuring the reliable limiting effect of the material placing platform. In the vertical state, the positioning member fixes the limiting strip to limit the movement of the base, so that the base cannot move from the cutting position to the feeding position. When the cutting device is not in use, the base and the material placing platform can be stored, and the base will not slide back and forth on the slide rail when the cutting device is inclined during transportation, reducing the difficulty of transportation and the risk of exposed knife groups.

[0011] Optionally, an elastic member is arranged between the material placing platform and the base, two ends of the elastic member are connected with the bottom of the material placing platform and the upper surface of the base respectively, a guide column is vertically arranged on the base, and the upper end of the guide column penetrates through the material placing platform.

[0012] By adopting the technical scheme, the elastic member connects the material placing platform and the base, and can automatically push the material placing platform to reset and rise after cutting is completed, facilitating the operator to quickly take and place the elements and reducing the step of manual intervention for resetting; the guide column penetrates through the material placing platform to provide rigid guidance for the lifting movement of the material placing platform, avoiding horizontal deviation or inclination of the material placing platform during the upward and downward movement, and ensuring that the through slot and the knife group and the material placing groove and the pressing head are always accurately aligned, thereby maintaining the stability of the cutting precision.

[0013] Optionally, the pressing assembly comprises a positioning column, the material placing platform is provided with a positioning hole, and when the base is located at the cutting position, the positioning hole is located directly below the positioning column.

[0014] By adopting the technical scheme, the positioning column of the pressing assembly and the positioning hole of the material placing platform form accurate cooperation at the cutting position, the positioning column is inserted into the positioning hole when the pressing head is lowered, and the material placing platform is positioned in the vertical direction, further limiting the slight displacement of the material placing platform in the horizontal direction, ensuring that the knife group can smoothly pass through the through slot and the through hole and can cut the material, reducing the cutting deviation caused by misalignment of the material placing platform and the pressing assembly, and improving the cutting precision.

[0015] Optionally, an avoiding groove is formed in the upper surface of the material placing platform, the avoiding groove is located on the side of the through slot away from the material placing groove and is arranged adjacent to the through slot, and the avoiding groove is in communication with the material placing groove.

[0016] By adopting the technical scheme, the avoiding groove is located on the side of the through slot away from the material placing groove and is in communication with the material placing groove, providing a space for accommodating the excess material, placing the lens group to be cut in the material placing groove, and placing the excess material connected with the lens group in the avoiding groove, so that the lens can be stably placed in the material placing groove, reducing the situation that the lens cannot be attached to the material placing groove due to unstable placement of the excess material on the material placing platform, and thereby improving the cutting precision.

[0017] Optionally, the knife group is detachably connected with the base, and a dismounting hole is vertically and through-provided in the avoiding slot, and the dismounting hole is correspondingly arranged with the knife group.

[0018] By adopting the above technical scheme, the dismounting hole in the avoiding slot corresponds to the position of the knife group, and an operation channel is provided for the dismounting of the knife group. The replacement or maintenance of the knife group can be completed without dismounting the material placing platform, the maintenance process of the equipment is simplified, the downtime caused by replacing the knife group is shortened, and the maintenance efficiency of the equipment is improved.

[0019] Optionally, the base is provided with a positioning pin on both sides along the extension direction of the slide rail, and the slide rail is provided with a positioning assembly at both ends, and the positioning assembly fixes the positioning pin when the base is located at the material loading position and the cutting position.

[0020] By adopting the above technical scheme, the positioning pin on both sides of the base cooperates with the positioning assembly at both ends of the slide rail to prevent the base from sliding along the slide rail due to external force during operation, and to prevent the base from bumping back and forth at both ends of the slide rail, and to provide a basic guarantee for the element placing accuracy during material loading and the knife group alignment accuracy during cutting, Optionally, the positioning assembly comprises a positioning seat and a buckle member, the positioning seat has a mounting space, the buckle member is located in at least part of the mounting space, the positioning seat is provided with a positioning slot towards one side of the slide rail, the positioning slot is through-provided in the horizontal direction, and the positioning pin is located in the positioning slot when the base is located at the material loading position and the cutting position; the buckle member is rotationally connected with the inner wall of the positioning seat, the inner wall of the positioning seat is provided with a guide slot, the buckle member is provided with a guide pin, the guide pin is located in the guide slot, a spring is connected between the guide pin and the positioning seat, the spring extends away from the opening side of the positioning slot, and the buckle member closes the opening of the positioning slot when the guide pin is located at the lower end of the guide slot.

[0021] By adopting the above technical scheme, the buckle member moves along the guide slot under the action of the spring and the guide pin, and can automatically close the opening of the positioning slot to lock the positioning pin, so as to quickly and reliably fix the base after the base is positioned; the pulling force of the spring on the buckle member can ensure that the buckle member can close the opening of the positioning slot after the positioning pin enters or exits the positioning slot.

[0022] Optionally, the slide rail is provided with a buffer assembly at both ends, the buffer assembly is arranged on the sliding platform, and the buffer assembly comprises a buffer elastic layer, and the buffer elastic layer abuts against the base when the base is located at the material loading position and the cutting position.

[0023] By adopting the technical scheme, the buffer assembly at the two ends of the slide rail is abutted against the base in position through the buffer elastic layer, kinetic energy when the base slides to the terminal point can be effectively absorbed, impact and vibration generated by rigid collision can be reduced, the buffer effect avoids direct abrasion of the base and the end of the slide rail, prolongs the service life of the equipment, reduces the influence of vibration on the positioning accuracy of elements on the placement platform, and indirectly guarantees the stability of the cutting quality.

[0024] To sum up, the present application includes at least one of the following beneficial effects: 1. By multiple positioning structures such as positioning of the placement groove, compression of the compression head, cooperation of the positioning column and the positioning hole, combined with accurate guidance of the guide column to the lifting of the placement platform, the knife group and the edge of the lens to be cut are accurately aligned, the problems of overcutting, undercutting and cutting deviation are effectively avoided, and the cutting edge regularity is guaranteed. At the same time, the positioning assembly and the buffer assembly of the base at the cutting position and the feeding position further improve the stability of the cutting.

[0025] 2. The sliding platform realizes separation of the feeding position and the cutting position, avoiding direct interference of the equipment on the operator during cutting. When the base is located at the feeding position, the limiting strip is inserted between the base and the placement platform to form support, preventing the placement platform from moving downward to cause excessive exposure of the knife group, and reducing the risk of scratching the operator or damaging the elements. The fixing of the positioning assembly to the base avoids collision caused by accidental sliding of the base during operation, and improves the safety of the operation process.

[0026] 3. The buffer assembly absorbs kinetic energy when the base slides to the terminal point through the buffer elastic layer, reducing the abrasion of the base and the slide rail caused by rigid collision. The detachable design of the knife group combined with the disassembly hole can maintain the knife group without disassembling the placement platform, reducing the disassembly damage to other parts of the equipment during maintenance, and prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the optical element precise cutting device in the embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structure of the optical element precise cutting device when the base is located at the feeding position in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the optical element precise cutting device when the base is located at the cutting position in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of part of the pressing assembly in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the structure of the placement platform in the embodiment of the present application.

[0032] Figure 6 is a structural schematic diagram of the base in the embodiment of the present application Figure 7 is a structural schematic diagram of the optical element precision cutting device when the limiting strip is in the vertical position in the embodiment of the present application.

[0033] Figure 8 is a structural schematic diagram of the positioning assembly in the embodiment of the present application.

[0034] Legend: 1, base; 11, knife set; 12, elastic member; 13, guide column; 14, positioning pin; 15, limiting column; 2, material placing platform; 201, material placing groove; 202, through groove; 203, positioning hole; 204, avoiding groove; 205, disassembly hole; 3, pressing assembly; 31, pressing head; 3101, through hole; 32, positioning column; 33, pressing rod; 34, pressing plate; 35, base; 4, sliding platform; 41, sliding rail; 42, side plate; 421, limiting strip; 422, supporting column; 423, positioning member; 43, positioning assembly; 4301, positioning groove; 4302, guide groove; 431, positioning seat; 432, buckle member; 4321, guide pin; 4322, spring; 44, buffer assembly; 441, buffer elastic layer. DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying drawings Figures 1-8 The present application will be further described in detail.

[0036] The embodiment of the present application discloses an optical element precision cutting device. Referring to Figures 1 to 3 , the sliding platform 4 is provided with sliding rails 41, and in the embodiment, two sliding rails 41 are symmetrically arranged in parallel. The base 1 is slidingly connected to the sliding rails 41, and the sliding platform 4 is further provided with a pressing assembly 3. The base 1 has a feeding position and a cutting position when sliding on the sliding platform 4, and the base 1 is located below the pressing assembly 3 when located at the cutting position. The base 1 is provided with a handle, and the user can hold the handle to push the base 1 to reciprocally slide on the sliding rails 41.

[0037] Referring to Figures 3 to 5A material loading platform 2 is provided on the base 1, and an elastic member 12 is provided between the base 1 and the material loading platform 2. The two ends of the elastic member 12 are respectively connected to the lower surface of the material loading platform 2 and the upper surface of the base 1. A guide column 13 is vertically provided on the base 1, and the upper end of the guide column 13 is set through the material loading platform 2. When the elastic member 12 is not compressed, the upper end of the guide column 13 is flush with the upper surface of the material loading platform 2. Specifically, the elastic member 12 is a spring 4322. In this embodiment, four elastic members 12 are provided and are centrally symmetrically arranged at the four corners of the base 1, and two guide columns 13 are provided and are centrally symmetrically arranged on both sides of the base 1. The guide columns 13 provide rigid guidance for the up and down movement of the material loading platform 2, avoiding horizontal deviation of the material loading platform 2 during the up and down movement, and ensuring that cutting can proceed smoothly.

[0038] A knife group 11 is provided at the center of the base 1. The knife group 11 includes a plurality of blades, and the plurality of blades are arranged upward. In this embodiment, the knife group 11 is provided with four blades. A through slot 202 is provided through the material loading platform 2 in the vertical direction. The blades of the knife group 11 are located in the through slot 202 corresponding to the through slot 202. When the material loading platform 2 is subjected to downward pressure, the elastic member 12 is compressed, and the material loading platform 2 will drop, so that the blades extend through the through slot 202 and reach the surface of the material loading platform 2. The plurality of blades cut the plurality of flow channels respectively. If the blades or lenses are offset, the number of lenses affected by the offset during cutting can be reduced, and the situation where a knife cuts multiple lenses by mistake due to deflection can be reduced, so that all lenses will not be damaged.

[0039] The upper surface of the loading platform 2 is provided with a loading trough 201 and an escape groove 204. In this embodiment, four loading troughs 201 are provided. The loading troughs 201 and the escape grooves 204 are respectively arranged on both sides of the through groove 202. The loading troughs 201 and the escape grooves 204 are connected to each other and arranged adjacent to the through groove 202. The loading trough 201 is used to place the lens to be cut, and the escape grooves 204 are used to place the runner connected to the lens after injection molding. The blade extends from the through groove 202 to cut the runner at the edge of the lens. The escape grooves 204 are used to place the residual material connected to the lens, so that the lens can be placed stably in the loading trough 201, avoiding the lens from not being able to fit into the loading trough 201 due to the residual material being placed unsteadily in the loading trough 201, causing the lens to deflect during cutting and affecting the cutting accuracy.

[0040] Reference Figures 4 to 7The pressing assembly 3 comprises a base 35, a pressing rod 33 and a pressing plate 34. The base 35 is arranged on the sliding platform 4 and located at one end of the slide rail 41. A handle is rotatably connected to the base 35. The pressing plate 34 is connected below the pressing rod 33. A user holds the pressing rod 33 and exerts a downward force. The pressing plate 34 can move downward. A guide structure and a reset structure are arranged above the pressing rod 33. After the pressing rod 33 is pressed downward, the pressing plate 34 can be automatically lifted to reset. The guide structure and the reset structure are a structure combination in which the spring 4322 is sleeved on the guide pipe, which is not described herein.

[0041] The bottom of the pressing plate 34 is provided with a pressing head 31. When the base 1 is located at the cutting position, the material placing groove 201 is located directly below the pressing head 31. The lower surface of the pressing head 31 is also provided with a through hole 3101 corresponding to the through groove 202. The through hole 3101 is used to accommodate the blade extending from the through groove 202. When the base 1 is located at the cutting position, the pressing rod 33 is pressed downward, and the pressing plate 34 moves downward. The pressing head 31 presses the lens tightly in the material placing groove 201. The pressing plate 34 continues to move downward to apply a downward pressure to the material placing platform 2. The elastic member 12 is compressed under the pressure, and the material placing platform 2 moves downward. The blades of the cutter group 11 extend from the through groove 202 to cut the flow channel and enter the through hole 3101. The lens is pressed by the pressing head 31 and is tightly pressed in the material placing groove 201, which reduces the deviation of the flow channel and the lens caused by the contact between the blade and the flow channel during cutting, and the cutting cannot be performed or the cutting effect is poor.

[0042] In a preferred embodiment, a fixing member is detachably arranged on the material placing platform 2. The fixing member is a sheet and cooperates with the lens on the material placing groove 201 to preliminarily press the lens in the material placing groove 201. Specifically, the fixing member can be a sheet with magnetic force and can be adsorbed on the material placing platform 2. After the user places the lens in the material placing groove 201, the user fixes the sheet using the fixing member to avoid the lens from loosening and deviating from the material placing groove 201 during the movement of the base 1, which causes inaccurate cutting.

[0043] In a preferred embodiment, referring to Figure 2 、 3 and 7, the sliding platform 4 is provided with a side plate 42. The side plate 42 is arranged on one side of one of the slide rails 41 and is arranged in parallel with the slide rail 41. The side plate 42 is provided with a limiting strip 421 close to one side of the base 1. The limiting strip 421 is arranged in the horizontal direction. When the base 1 is located at the loading position, the limiting strip 421 is located between the base 1 and the material placing platform 2. When the base 1 slides from the cutting position to the loading position, the limiting strip 421 enters between the base 1 and the material placing platform 2. At this time, even if the material placing platform 2 is pressed by mistake, the limiting strip 421 limits the downward movement of the material placing platform 2 to avoid the blades extending from the through groove 202, which can injure the operator.

[0044] In a preferred embodiment, referring to Figure 3 and 7 The side plate 42 is provided with a support column 422 and a positioning member 423 near the side of the slide rail 41, and the limiting strip 421 is rotatably connected to the side plate 42 at one end near the material pressing assembly 3. The limiting strip 421 has a horizontal position and a vertical position when rotating. When the limiting strip 421 is in the horizontal position, the lower surface of the limiting strip 421 abuts against the upper surface of the support column 422, and the limiting strip 421 can enter between the base 1 and the material placing platform 2. When the limiting strip 421 is in the vertical position, the positioning member 423 fixes one end of the limiting strip 421. Specifically, the positioning member 423 is a buckle assembly with a torsion spring in the prior art, which will not be described here. When the positioning member 423 fixes the limiting strip 421 in the vertical state, the base 1 cannot slide from the cutting position to the feeding position even if it slides. When the cutting device is not needed, the base 1 and the material placing platform 2 can be stored below the material pressing assembly 3. At the same time, the base 1 cannot slide back and forth on the slide rail 41 when the cutting device is transported, reducing the difficulty of transportation and the risk of exposed blades.

[0045] In a preferred embodiment, referring to Figures 3 to 5 The knife set 11 is detachably connected to the base 1, and a dismounting hole 205 is vertically and penetratingly provided in the avoiding groove 204 and corresponds to the knife set 11. Users can dismount the knife set 11 through the dismounting hole 205 with tools such as screwdrivers or sleeves. In this way, the blades can be replaced without dismounting the material placing platform 2, simplifying the maintenance process and improving the maintenance efficiency.

[0046] In a preferred embodiment, referring to Figure 1 The upper and lower baffles are arranged in a staggered manner between the upper and lower baffles. When the base 1 is in the cutting position, the upper and lower baffles are in close contact with each other, forming a closed space between the material placing platform 2 and the pressing plate 34, reducing the interference of the external environment on the lens, and improving the safety of cutting.

[0047] In a preferred embodiment, referring to Figure 4 and 6 The bottom of the pressing plate 34 is provided with a positioning column 32, and the upper surface of the material placing platform 2 is provided with a positioning hole 203. When the base 1 is in the cutting position, the positioning hole 203 is located directly below the positioning column 32. When the pressing plate 34 moves downward, the positioning column 32 is inserted into the positioning hole 203, providing positioning for the alignment of the material pressing head 31 and the material placing groove 201. Preferably, the lower end of the positioning column 32 gradually decreases in diameter from top to bottom. Even if the base 1 is partially deviated from the cutting position, the smaller part of the lower end of the positioning column 32 can also enter the positioning hole 203, reducing the cutting deviation caused by the misalignment of the material placing platform 2 and the pressing plate 34, and improving the cutting accuracy.

[0048] In a preferred embodiment, referring to Figure 5 The bottom surface of the base 1 is provided with a limiting column 15. When the material placing platform 2 moves downward by a distance, the top of the limiting column 15 abuts against the bottom of the material placing platform 2, so as to prevent the material placing platform 2 from continuously moving downward, and limit the stroke of the downward movement of the material placing platform 2.

[0049] In a preferred embodiment, referring to Figure 3 The sliding rails 41 are both provided with a buffer assembly 44, which is arranged on the sliding platform 4. The buffer assembly 44 has a buffer elastic layer 441, which is made of rubber. When the base 1 is located at the feeding position and the cutting position, the base 1 abuts against the buffer elastic layer 441 of the buffer assembly 44 at both ends. The buffer elastic layer 441 can reduce the impact when the base 1 slides to both ends of the sliding rail 41, and prolong the service life of the device.

[0050] In a preferred embodiment, referring to Figure 7 and 8 The base 1 is provided with a positioning pin 14, and the sliding rails 41 are both provided with a positioning assembly 43. Specifically, the positioning assembly 43 is provided with four, and each sliding rail 41 is provided with two positioning assemblies 43 at both ends. The positioning assembly 43 includes a positioning seat 431 and a buckle 432. The positioning seat 431 has a mounting space, and the buckle 432 is located in the mounting space and rotationally connected with the inner wall of the positioning seat 431. The positioning seat 431 is provided with a positioning groove 4301 towards one side of the sliding rail 41, and the positioning groove 4301 is provided in the horizontal direction. When the base 1 is located at the feeding position and the cutting position, the positioning pin 14 is located in the positioning groove 4301.

[0051] The inner wall of the positioning seat 431 is provided with a guide groove 4302, the guide groove 4302 is provided along the vertical direction, the buckle piece 432 is provided with a guide pin 4321, the guide pin 4321 is in sliding fit with the guide groove 4302, the guide pin 4321 is connected with the positioning seat 431 through a spring 4322, and the spring 4322 extends away from the opening side of the positioning groove 4301. When the guide pin 4321 is located at the lower end of the guide groove 4302, the buckle piece 432 closes the opening of the positioning groove 4301. The side of the buckle piece 432 close to the opening of the positioning groove 4301 is claw-shaped, when the positioning pin 14 enters the positioning groove 4301, the positioning pin 14 is in contact with the inclined surface on the claw-shaped outer side of the buckle piece 432, the buckle piece 432 is lifted, and the opening of the positioning groove 4301 is opened. When the positioning pin 14 completely enters the positioning groove 4301, the opening of the positioning groove 4301 is closed by the buckle piece 432 under the pulling force of the spring 4322. When the positioning pin 14 leaves the positioning groove 4301, the positioning pin 14 is in contact with the inclined surface on the claw-shaped inner side of the buckle piece 432, the buckle piece 432 is lifted, and the opening of the positioning groove 4301 is opened. The positioning assembly 43 has certain resistance to the movement of the positioning pin 14, when the base 1 moves to the feeding position and the cutting position, the positioning pin 14 enters the positioning groove 4301 and is closed by the buckle piece 432, and the positioning pin 14 needs to be pulled in the horizontal direction to leave the positioning groove 4301, so that the base 1 is prevented from colliding with the slide rails 41 on both sides when reaching the two ends of the slide rails 41, and the base 1 is basically only in the feeding position and the cutting position on the slide rails 41, thereby achieving certain positioning effect.

[0052] The above are preferred embodiments of the present application, and the embodiments are only explanations of the present application, and do not limit the protection scope of the present application, therefore: equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An optical element precision cutting device, characterized in that: include: A base (1), wherein a knife group (11) is provided on the upper surface of the base (1), and the knife group (11) is arranged upward; A material placement platform (2), the material placement platform (2) is arranged on the base (1) in a lifting manner, a material placement trough (201) is provided on the upper surface of the material placement platform (2), a through groove (202) is provided through the material placement platform (2) in the vertical direction, the through groove (202) is arranged adjacent to the material placement trough (201), the through groove (202) is arranged corresponding to the knife group (11), and the knife group (11) is at least partially located in the through groove (202); A material pressing assembly (3), the material pressing assembly (3) is located above the material placing platform (2), the material pressing assembly (3) comprises a material pressing head (31), the material pressing head (31) is arranged to be raised and lowered, the material pressing head (31) is arranged corresponding to the material placing trough (201), and a through hole (3101) is provided at the bottom of the material pressing head (31); A sliding platform (4) is provided with a slide rail (41), the base (1) is slidably arranged on the slide rail (41), the base (1) has at least a cutting position and a loading position, when the base (1) is located at the cutting position, the material placement groove (201) is located directly below the pressing head (31), and the through hole (3101) corresponds to the through groove (202).

2. The optical element precision cutting device according to claim 1, characterized in that: The sliding platform (4) is provided with a side plate (42), the side plate (42) is arranged parallel to the slide rail (41), and a limiting strip (421) is provided on the side of the side plate (42) close to the slide rail (41). When the base (1) is located at the loading position, the limiting strip (421) is located between the base (1) and the loading platform (2).

3. The optical element precision cutting device according to claim 2, characterized in that: The side plate (42) is provided with a support column (422) and a positioning member (423) on one side close to the slide rail (41); the limiting bar (421) is rotatably connected to the side plate (42) at one end close to the pressing assembly (3); and the limiting bar (421) has a horizontal position and a vertical position when rotating; When the limiting strip (421) is located in the horizontal position, the lower surface of the limiting strip (421) abuts against the supporting column (422); When the base (1) is located at the cutting position, the limiting strip (421) can be rotated to a vertical position, and the positioning member (423) cooperates with one end of the limiting strip (421) to fix the limiting strip (421).

4. The optical element precision cutting device according to claim 1, characterized in that: An elastic member (12) is provided between the material placement platform (2) and the base (1), and the two ends of the elastic member (12) are respectively connected to the bottom of the material placement platform (2) and the upper surface of the base (1). A guide column (13) is vertically provided on the base (1), and the upper end of the guide column (13) is arranged through the material placement platform (2).

5. The optical element precision cutting device according to claim 1, characterized in that: The pressing assembly (3) includes a positioning column (32), and a positioning hole (203) is provided on the material placement platform (2). When the base (1) is located at the cutting position, the positioning hole (203) is located directly below the positioning column (32).

6. The optical element precision cutting device according to claim 1, characterized in that: An avoidance groove (204) is provided on the upper surface of the material placement platform (2). The avoidance groove (204) is located on a side of the through groove (202) away from the material placement groove (201) and is arranged adjacent to the through groove (202). The avoidance groove (204) is communicated with the material placement groove (201).

7. The optical element precision cutting device according to claim 6, characterized in that: The knife group (11) is detachably connected to the base (1); a disassembly hole (205) is provided vertically through the avoidance groove (204); and the disassembly hole (205) is arranged corresponding to the knife group (11).

8. The optical element precision cutting device according to claim 1, characterized in that: The base (1) is provided with positioning pins (14) on both sides along the extension direction of the slide rail (41), and positioning components (43) are provided at both ends of the slide rail (41). When the base (1) is located at the loading position and the cutting position, the positioning components (43) fix the positioning pins (14).

9. The optical element precision cutting device according to claim 8, characterized in that: The positioning assembly (43) includes a positioning seat (431) and a fastener (432), the positioning seat (431) has an installation space, the fastener (432) is located in at least part of the installation space, the positioning seat (431) is provided with a positioning groove (4301) on the side facing the slide rail (41), the positioning groove (4301) is opened through in the horizontal direction, and when the base (1) is located at the loading position and the cutting position, the positioning pin (14) is located in the positioning groove (4301); The latch (432) is rotatably connected to the inner wall of the positioning seat (431), and a guide groove (4302) is provided on the inner wall of the positioning seat (431). A guide pin (4321) is provided on the latch (432), and the guide pin (4321) is located in the guide groove (4302). A spring (4322) is connected between the guide pin (4321) and the positioning seat (431), and the spring (4322) extends away from the opening side of the positioning groove (4301). When the guide pin (4321) is located at the lower end of the guide groove (4302), the latch (432) closes the opening of the positioning groove (4301).

10. The optical element precision cutting device according to claim 1, characterized in that: Buffer components (44) are provided at both ends of the slide rail (41). The buffer components (44) are arranged on the sliding platform (4). The buffer components (44) include a buffer elastic layer (441). When the base (1) is located at the loading position and the cutting position, the buffer elastic layer (441) abuts against the base (1).

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