Compression resistance testing equipment for mirror surface

Abstract

The invention discloses compression resistance testing equipment for a mirror surface, and belongs to the technical field of optical lens pressure detection equipment. The pressure detection mechanism comprises a hydraulic cylinder arranged on the frame, a hydraulic rod at the bottom end of the hydraulic cylinder extends to the pressing plate, and the pressure detection mechanism is used for pressing and detecting the mirror surface; and the supporting mechanism comprises a first triangular plate arranged at the notch of the workbench, an elastic telescopic part is installed at the top end of the first triangular plate, and fixing rods installed on the first triangular plate are arranged on the periphery of the edge of the outer wall of the elastic telescopic part. The clamping mechanism can solve the problems that an existing clamping mechanism conducts limiting in a two-side or four-side clamping mode, but does not conduct all-directional clamping limiting on a lens, and when a pressing point is located at the edge of the lens, the clamping mechanism is prone to being separated from the lens in a traditional clamping mode, and the clamping mechanism cannot conduct clamping limiting on the lens. And the safety of the device is not improved.

Description

Technical Field

[0001] The invention belongs to the technical field of optical lens compression test devices, and in particular relates to a compression test device for mirror surfaces. Background Art

[0002] Optical lens: The glass originally used to make lenses is the bumps on ordinary window glass or wine bottles, which are shaped like a "crown", hence the name of crown glass or crown brand glass. Optical lenses are made of high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and other oxides mixed according to a specific formula, melted at high temperature in a platinum crucible, stirred evenly with ultrasound to remove bubbles; then slowly cooled for a long time to prevent internal stress in the glass block. The cooled glass block must be measured by optical instruments to check whether the purity, transparency, uniformity, refractive index and dispersion rate meet the specifications. Qualified glass blocks are heated and forged to become optical lens blanks.

[0003] After the lens is processed and manufactured, it is often necessary to perform corresponding performance tests to judge the quality of the lens, such as strength, hardness and rebound index, etc. When the lens is subjected to pressure testing, it needs to be limited and clamped to prevent the lens from detaching during the pressure testing process. The current clamping mechanism limits the position by clamping on both sides or all around, but does not clamp and limit the lens in all directions. When the pressing point is at the edge of the lens, the clamping mechanism and the lens are easily separated under the traditional clamping method, which is not conducive to improving the safety of the device. At the same time, the functional design of the pressure detection mechanism is relatively simple and the application performance is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a compression test device for mirror surfaces to solve the technical problem that the current clamping mechanism is limited by clamping on both sides or all around, but does not clamp and limit the lens in all directions. When the pressing point is at the edge of the lens, the clamping mechanism and the lens are easily separated under the traditional clamping method, which is not conducive to improving the safety of the device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A compressive testing device for a mirror surface, comprising: Workbench; A pressure detection mechanism, the pressure detection mechanism includes a hydraulic cylinder placed on the frame, a hydraulic rod at the bottom end of the hydraulic cylinder extends to the pressing plate, and the pressure detection mechanism is used for pressing the mirror surface; A supporting mechanism, the supporting mechanism comprising a first triangular plate placed at the notch of the workbench, an elastic telescopic member being installed at the top of the first triangular plate, a fixing rod being installed on the first triangular plate being arranged around the edge of the outer wall of the elastic telescopic member, and a material guide opening placed at the notch is provided at both ends of the first triangular plate, and a collecting box movably connected to the side wall of the workbench is provided below the material guide opening; A position-limiting clamping mechanism, wherein the position-limiting clamping mechanism comprises a driving motor fixed to the inner wall of the workbench and located between the collecting box and the first triangular plate, wherein the output shaft of the driving motor sequentially extends to the driving wheel and the rotating gear, wherein the driving wheel and the driven wheels at both ends are connected through a conveyor belt transmission, wherein the outside of the conveyor belt is placed on the material guide port and passes through the hollow second triangular plate, wherein the top end of the driven wheel passes through the workbench and extends to the lead screw shaft, wherein a lead screw nut fixed to a U-shaped rod and kept moving up and down synchronously is spirally driven on the lead screw shaft, wherein one end of the U-shaped rod is slidably connected to a telescopic plate through a panel, and a clamping plate adapted thereto is connected to the telescopic plate; Among them, the two ends of the rotating tooth are respectively meshed with a first gear plate and a second gear plate, one end of the first gear plate and the second gear plate are connected with a baffle plate that moves in the opposite direction through a bracket, the transmission ratio between the rotating tooth and the first gear plate is kept the same as the transmission ratio between the rotating tooth and the second gear plate, and the baffle plate and the clamping plate are symmetrically arranged on the workbench in all directions. As the driving motor is started, the bracket drives the baffle plates at both ends to clamp or separate the side walls of the lens, and at the same time, the U-shaped rod drives the clamping plates to limit or separate the top surface of the lens.

[0006] Furthermore, a limiting ring is integrally formed and installed at the top end of the screw shaft, and both ends of the crossbeam on the screw nut are connected with strip grooves matching with it along the height direction of the side plate.

[0007] Furthermore, slots are provided at both ends of the outer wall of the panel and the panel is installed on the U-shaped rod by plugging, and the connection between the panel and the lead screw nut is connected by locking and fixing with a bolt assembly.

[0008] Furthermore, a sliding groove is provided on the inner wall of the panel at the edge of the outer wall of the telescopic plate, and trapezoidal parts are fixedly installed at both ends of the telescopic plate. Trapezoidal grooves that abut and limit the trapezoidal parts are provided on both sides of the sliding groove, and friction pads that contact and fit the trapezoidal parts are provided in the length direction of the sliding groove.

[0009] Furthermore, both sides of the top end of the clamping plate and the telescopic plate are connected via a first telescopic rod, and a first spring located between the clamping plate and the telescopic plate is disposed outside the first telescopic rod.

[0010] Furthermore, the elastic telescopic part includes a lifting block movably connected to the sleeve, the lifting block is provided with an inwardly recessed annular portion in the height direction, and a resistance block is fixedly installed on the outer wall of the lifting block, a unloading rod installed on a second spring is provided between the resistance blocks, one end of the second spring extends to the side wall of the sleeve, and the unloading rod is made of elastic plastic.

[0011] Furthermore, the bottom end of the lifting block is connected to the pushing platen, the pushing platen and the bottom end of the inner wall of the sleeve are connected via a second telescopic rod, and a limited position cavity is formed between the pushing platen and the inner wall of the sleeve.

[0012] Furthermore, the output shaft of the driving motor and the driving wheel are connected via a coupling, the driving wheel and the driven wheels at both ends rotate at the same speed, and the conveyor belts are staggered up and down on the outer wall of the driving wheel.

[0013] Furthermore, the inclined opening of the first triangular plate is arranged toward the material guide port, the through hole on the second triangular plate is arranged along the transmission direction of the conveyor belt, and a handle is detachably installed on the outer wall of the collecting box. As the handle pushes the collecting box, the collecting box and the workbench are closed or separated from each other.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) A support mechanism is provided to support and fix the lens on all sides through a fixing rod, and the elastic telescopic parts at the edge of the center position can be lowered as the lens bends under the action of the pressure detection mechanism, so as to facilitate the visual measurement of the maximum deformation of the lens during the pressure resistance test, thereby facilitating the calculation of the rebound index of the mirror surface during the pressure resistance test.

[0015] (2) An elastic telescopic part is provided. When the lifting block is subjected to a force and moves downward, the abutment block on the inwardly concave annular part cooperates with the unloading rod on the second spring to buffer and adjust the moving lifting block by abutting and fitting manner, thereby preventing the structural parts from being damaged by collision due to excessive squeezing force. At the same time, the pushing plate on the lifting block moves up and down under the connection of the second telescopic rod, thereby preventing the moving part from deviating from its position during movement, thereby affecting the stability of the supporting connection for the lens. In addition, the lifting block descends so that the unloading rod of the height direction of the abutment connection can record the maximum deformation that occurs, thereby facilitating personnel to calculate the rebound index of the lens during each compression test and effectively understanding the maximum deformation of the lens. The operation is convenient for personnel and the data is accurate.

[0016] (3) A limit clamping mechanism is provided, and the driving motor is started to drive the driving wheel and the rotating gear to rotate synchronously. Under the action of mechanical transmission, the lead screw shaft can rotate, and the first gear plate and the second gear plate can move in the opposite direction, so that the clamping plate on the lead screw shaft clamps the lens downward, and the bracket drives the baffles at both ends to clamp the side wall of the lens. At the same time, the clamping plate and the baffle are distributed up and down around the periphery. In this way, in conjunction with the support mechanism, the lens can be clamped in all directions, avoiding the clamping work in a single direction, and effectively ensuring the stability of the lens when clamped. The clamping plate is provided with a telescopic plate that can be pulled horizontally. By setting a trapezoidal portion and a trapezoidal groove and increasing the contact surface, the applied force can be dispersed to avoid excessive concentration of force on the structural parts. The friction pad on the inner wall of the slide groove can increase the friction resistance, so that the telescopic plate maintains its movement stability when moving, so that the mechanism can also adapt to the limit clamping work of lenses of different sizes and thicknesses, and has strong applicability.

[0017] (4) An impurity recovery mechanism is provided. Impurity particles generated during the operation of the pressure detection mechanism can enter the material guide port through the first triangular plate due to the gravity of the impurities themselves, and are collected in a centralized manner through a collection box. At the same time, the second triangular plate on the material guide port can facilitate the transmission part to avoid contact with the impurity particles during normal movement, thereby ensuring that the impurities are effectively collected while allowing the transmission part to operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a compressive testing device for mirror surfaces of the present invention; Figure 2 It is a front view of a compressive testing device for a mirror surface according to the present invention; Figure 3 It is a schematic diagram of the internal section of the workbench of the present invention; Figure 4 The present invention Figure 3 Front view of the workbench; Figure 5 is a connection diagram of the drive motor of the present invention; Figure 6 The present invention Figure 1 A magnified image of point A; Figure 7 It is a schematic diagram of the connection between the panel and the telescopic plate of the present invention; Figure 8Schematic diagram of meshing transmission of rotating gears of the present invention; Fig. 9 It is a structural schematic diagram of the elastic telescopic member of the present invention.

[0020] Figure numerals: 1, workbench; 2, pressure detection mechanism; 3, hydraulic cylinder; 4, pressing plate; 5, supporting mechanism; 6, first triangular plate; 7, elastic telescopic member; 8, fixing rod; 9, material guide port; 10, collecting box; 11, limit clamping mechanism; 12, driving motor; 13, driving wheel; 14, rotating gear; 15, driven wheel; 16, conveyor belt; 17, second triangular plate; 18, screw shaft; 19, U-shaped rod; 20, screw screw Mother; 21, panel; 22, telescopic plate; 23, clamping plate; 24, first gear plate; 25, second gear plate; 26, baffle; 27, crossbeam; 28, trapezoidal part; 29, trapezoidal groove; 30, friction pad; 31, first telescopic rod; 32, first spring; 33, sleeve; 34, lifting block; 35, annular part; 36, resistance block; 37, second spring; 38, unloading rod; 39, push plate; 40, second telescopic rod. DETAILED DESCRIPTION

[0021] 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.

[0022] Reference Manual Attached Figure 1 and Figure 2 As shown, a compressive testing device for a mirror surface comprises: Workbench 1; A pressure detection mechanism 2, the pressure detection mechanism 2 comprises a hydraulic cylinder 3 placed on a frame, a hydraulic rod at the bottom end of the hydraulic cylinder 3 extends to a pressing plate 4, and the pressure detection mechanism 2 is used for pressing and detecting the mirror surface; The supporting mechanism 5 includes a first triangular plate 6 placed at the slot of the workbench 1, an elastic telescopic member 7 is installed at the top of the first triangular plate 6, and a fixing rod 8 installed on the first triangular plate 6 is arranged around the edge of the outer wall of the elastic telescopic member 7, and both ends of the first triangular plate 6 are provided with a material guide port 9 placed at the slot, and a collection box 10 movably connected to the side wall of the workbench 1 is provided below the material guide port 9.

[0023] The fixing rod 6 connected to the first triangular plate 6 on the supporting mechanism 5 is arranged to support and fix the edge of the lens, and the elastic telescopic member 7 on the first triangular plate 6 can be raised and lowered together with the force applied to the lens, thereby facilitating subsequent detection of the maximum deformation amount and rebound index of the lens.

[0024] A supporting mechanism 5 is provided to support and fix the lens on all sides through a fixing rod 8, and the elastic telescopic member 7 at the edge of the center position can, under the action of the pressure detection mechanism 2, enable the lifting block 34 to descend as the lens bends, thereby facilitating visual measurement of the maximum deformation of the lens during the pressure resistance test, thereby facilitating calculation of the rebound index of the mirror surface during the pressure resistance test.

[0025] Specifically, a second triangular plate 17 is provided at the material guide port 9 and is placed on the inner wall 1 of the workbench. The shape of the second triangular plate 17 itself is matched with the through hole inside it, which can not only ensure that the conveyor belt 16 can pass freely and provide corresponding activity space, but also prevent the foreign particles generated during the pressing detection process from passing through the first triangular plate 6 and the second triangular plate 17 into the collection box 10, so as to facilitate the subsequent cleaning work.

[0026] refer to Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , the limit clamping mechanism 11, the limit clamping mechanism 11 includes a driving motor 12 fixed to the inner wall of the workbench 1 and located between the collecting box 10 and the first triangular plate 6, the output shaft of the driving motor 12 extends to the driving wheel 13 and the rotating gear 14 in sequence, the driving wheel 13 and the driven wheels 15 at both ends are connected by a conveyor belt 16, the outside of the conveyor belt 16 is placed on the guide port 9 and passes through the hollow second triangular plate 17, the top of the driven wheel 15 passes through the workbench 1 and extends to the screw shaft 18, the screw shaft 18 is spirally driven with a screw nut 20 fixed on the U-shaped rod 19 and kept moving up and down synchronously, one end of the U-shaped rod 19 is slidably connected with a telescopic Plate 22, a clamping plate 23 adapted thereto is connected to the telescopic plate 22; wherein, the first gear plate 24 and the second gear plate 25 are respectively meshed and transmitted at both ends of the rotating tooth 14, and one end of the first gear plate 24 and the second gear plate 25 are connected to a baffle 26 that moves in the opposite direction through a bracket. The transmission ratio between the rotating tooth 14 and the first gear plate 24 is the same as the transmission ratio between the rotating tooth 14 and the second gear plate 25. The baffle 26 and the clamping plate 23 are symmetrically arranged on the workbench 1 in all directions. As the driving motor 12 is started, the bracket drives the baffles 26 at both ends to clamp or separate the side walls of the lens, and at the same time, the U-shaped rod 19 drives the clamping plate 23 to limit or separate the top surface of the lens.

[0027] Specifically, a limit ring is integrally formed and installed on the top of the screw shaft 18, and both ends of the cross beam 27 on the screw nut 20 are connected with strip grooves matching it along the height direction of the side plate. The setting of the above-mentioned strip grooves can ensure the stability of the movement of the screw nut 20 during the up and down movement, avoid the deviation of the movement trajectory, and can also provide corresponding supporting force for the screw nut 20 and the connecting parts, ensuring that the structural parts can be stably connected. The limit ring on the screw shaft 18 can also play a corresponding limiting protection role.

[0028] After the driving motor 12 is started, the power is transmitted to the driving wheel 13 and the rotating gear 14 through the coupling. The driving wheel 13 and the driven wheels 15 at both ends are connected by the conveyor belts 16 that are staggered up and down. In this way, the driven wheels 15 at both ends can rotate synchronously, and the conveyor belts 16 can also avoid interference during the rotation process. The rotation of the driven wheel 15 drives the lead screw shafts 18 rotating in the same direction at both ends to move. With the help of the spiral transmission, the clamping plate 23 can move downward and contact the mirror surface to limit the position. In addition, the first spring 32 arranged between the clamping plate 23 and the telescopic plate 22 can play a role of buffering and adjustment. The first telescopic rod 31 can play a role of partial positive guidance for the clamping plate 23 during the up and down movement to prevent the clamping plate 23 from shaking.

[0029] A limit clamping mechanism 11 is provided, and the driving motor 12 is started to drive the synchronous rotation of the driving wheel 13 and the rotating gear 14. Under the action of mechanical transmission, the lead screw shaft 18 can be rotated, and the first gear plate 24 and the second gear plate 25 can move in the opposite direction, so that the clamping plate 23 on the lead screw shaft 18 clamps the lens downward, and the bracket drives the baffles 26 at both ends to clamp the side wall of the lens. At the same time, the clamping plate 23 and the baffle 26 are distributed up and down around the periphery. In this way, in conjunction with the support mechanism 5, the lens can be clamped in all directions, avoiding the clamping work in a single direction, and effectively ensuring the stability of the lens when clamped. The clamping plate 23 is provided with a telescopic plate 22 that can be pulled horizontally. By setting a trapezoidal portion 28 and a trapezoidal groove 29, by increasing the contact surface, the applied force can be dispersed to avoid excessive concentration of force on the structural parts. The friction pad 30 on the inner wall of the slide groove can increase the friction resistance, so that the telescopic plate 22 maintains its movement stability when moving, so that the mechanism can also adapt to the limit clamping work of lenses of different sizes and thicknesses, and has strong applicability.

[0030] Specifically, slots are provided at both ends of the outer wall of the panel 21 and are installed on the U-shaped rod 19 by plugging, and the connection between the panel 21 and the screw nut 20 is connected by locking and fixing with a bolt assembly. In addition, the bolt assembly can be connected by a locating pin or a locating pin assembly. The above-mentioned specific structural parts are obvious to technical personnel in this field and will not be described in detail here.

[0031] The outer wall edge of the telescopic plate 22 is provided with a slide groove on the inner wall of the panel 21, and the two ends of the telescopic plate 22 are fixedly installed with a trapezoidal portion 28, and the two sides of the slide groove are provided with a trapezoidal groove 29 that contacts and limits the trapezoidal portion 28, and the length direction of the slide groove is provided with a friction pad 30 that contacts and fits the trapezoidal portion 28. The trapezoidal grooves 29 at both ends of the inner wall of the panel 21 can not only play a role in limiting the movement of the telescopic plate 22, but also can make it possible to disperse the applied force by expanding the contact surface when contacting the trapezoidal portion 28 on the telescopic plate 22, thereby avoiding the phenomenon that the applied force is concentrated and causes damage to the device, which is not conducive to improving the service life of the device. The two sides of the top of the clamping plate 23 and the telescopic plate 22 are connected by a first telescopic rod 31, and the first spring 32 located between the clamping plate 23 and the telescopic plate 22 is provided on the outside of the first telescopic rod 31.

[0032] refer to Figure 3 , Figure 4 and Fig. 9 The elastic telescopic member 7 includes a lifting block 34 movably connected to the sleeve 33, an inwardly recessed annular portion 35 is provided in the height direction of the lifting block 34, and a resistance block 36 is fixedly installed on the outer wall of the lifting block 34, and a force unloading rod 38 installed on a second spring 37 is provided between the resistance blocks 36, one end of the second spring 37 extends to the side wall of the sleeve 33, and the force unloading rod 38 is made of elastic plastic.

[0033] Specifically, the bottom end of the lifting block 34 is connected to the pushing plate 39, and the pushing plate 39 and the bottom end of the inner wall of the sleeve 33 are connected by the second telescopic rod 40, and a limited position cavity is formed between the pushing plate 39 and the inner wall of the sleeve 33. The unloading rod 38 connected to the second spring 37 can play a buffering and regulating role for the descending lifting block 34. At the same time, the side wall edge of the inwardly recessed annular portion 35 can effectively contact and connect with the unloading rod 38 by expanding the contact surface, so that the action force can be further converted into the elastic potential energy of the second spring 37 and the elastic material unloading rod 38, pushing the plate 39 to move up and down in the limiting cavity. Cooperating with the second telescopic rod 40 can help the moving part to move accurately on the corresponding track during the movement, and can also provide a certain supporting force to the lifting block 34, thereby ensuring that the structural part is supported in the sleeve 33.

[0034] An elastic telescopic member 7 is provided. When the lifting block 34 is subjected to a force and moves downward, the abutment block 36 on the inwardly recessed annular portion 35 cooperates with the unloading rod 38 on the second spring 37 to buffer and adjust the moving lifting block 34 through abutment and fitting, thereby preventing collision damage to the structural members caused by excessive extrusion force. At the same time, the pushing plate 39 on the lifting block 34 moves up and down under the connection of the second telescopic rod 40, which can prevent the moving member from deviating from its position during the movement, thereby affecting the stability of the supporting connection for the lens. In addition, the lifting block 34 descends so that the unloading rod 38 that is in contact with the connection in the height direction can record the maximum deformation that occurs, thereby facilitating personnel to calculate the rebound index of the lens during each compression test and effectively understanding the maximum deformation of the lens. The personnel are convenient to operate and the data is accurate.

[0035] The output shaft of the driving motor 12 is connected to the driving wheel 13 through a coupling, and the driving wheel 13 and the driven wheels 15 at both ends rotate at the same speed, and the conveyor belts 16 are staggered up and down on the outer wall of the driving wheel 13. The above-mentioned same-speed rotation can ensure that the clamping plate 23 moves up and down synchronously, so that it can effectively contact and fit with the lens. The opening inclined part of the first triangular plate 6 is set toward the guide port 9, and the through hole on the second triangular plate 17 is set along the transmission direction of the conveyor belt 16, and a handle is detachably installed on the outer wall of the collecting box 10. As the handle pushes the collecting box 10, the collecting box 10 and the workbench 1 are closed or separated from each other.

[0036] The collecting box 10 can be separated from the workbench 1 by a detachable handle, so as to facilitate the cleaning of foreign particles. At the same time, a accommodating cavity connected to the collecting box 10 is provided in the workbench 1 to provide corresponding storage space for the collecting box 10.

[0037] An impurity recovery mechanism is provided. Impurity particles generated when the pressure detection mechanism 2 is in operation can enter the material guide port 9 through the first triangular plate 6 due to the gravity of the impurities themselves, and are collected centrally by the collecting box 10. At the same time, the second triangular plate 17 on the material guide port 9 can facilitate the transmission part to avoid contact with impurity particles during normal movement, thereby ensuring effective collection of impurities while allowing the transmission part to work normally.

[0038] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0039] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A compressive testing device for mirrors, characterized in that: include: A support mechanism (5), the support mechanism (5) comprising a first triangular plate (6) placed at a notch of the workbench (1), an elastic telescopic member (7) being mounted on the top of the first triangular plate (6), and fixing rods (8) mounted on the first triangular plate (6) being arranged around the outer wall edge of the elastic telescopic member (7); A position-limiting clamping mechanism (11), the position-limiting clamping mechanism (11) comprising a driving motor (12), the output shaft of the driving motor (12) extending to a driving wheel (13) and a rotating tooth (14) in sequence, the driving wheel (13) and driven wheels (15) at both ends being connected by a conveyor belt (16), the top end of the driven wheel (15) passing through the workbench (1) and extending to a lead screw shaft (18), the lead screw shaft (18) being spirally driven with a lead screw nut (20) fixed to a U-shaped rod (19) and moving up and down synchronously, one end of the U-shaped rod (19) being slidably connected to a telescopic plate (22) via a panel (21), the telescopic plate (22) being connected to a clamping plate (23) matching the same; The two ends of the rotating tooth (14) are respectively meshed with a first gear plate (24) and a second gear plate (25), and one end of each of the first gear plate (24) and the second gear plate (25) is connected to a baffle plate (26) that moves in the opposite direction via a bracket.

2. A compressive testing device for mirrors according to claim 1, characterized in that: A limiting ring is integrally formed and installed on the top end of the lead screw shaft (18), and both ends of the crossbeam (27) on the lead screw nut (20) are connected to strip grooves matching the side plate along the height direction of the side plate.

3. The compressive testing device for mirror surface according to claim 1, characterized in that: Slots are provided at both ends of the outer wall of the panel (21) and are installed on the U-shaped rod (19) by plugging, and the connection between the panel (21) and the lead screw nut (20) is connected by locking and fixing with a bolt assembly.

4. The compressive testing device for mirror surface according to claim 3, characterized in that: The outer wall edge of the telescopic plate (22) is provided with a slide groove connected to the inner wall of the panel (21), and both ends of the telescopic plate (22) are fixedly mounted with a trapezoidal portion (28), both sides of the slide groove are provided with a trapezoidal groove (29) which abuts against the trapezoidal portion (28) to limit the position, and a friction pad (30) which contacts and fits with the trapezoidal portion (28) is provided in the length direction of the slide groove.

5. The compressive testing device for mirror surface according to claim 4, characterized in that: Both sides of the top end of the clamping plate (23) and the telescopic plate (22) are connected via a first telescopic rod (31), and a first spring (32) located between the clamping plate (23) and the telescopic plate (22) is provided outside the first telescopic rod (31).

6. The compressive testing device for mirror surface according to claim 1, characterized in that: The elastic telescopic member (7) comprises a lifting block (34) movably connected to the sleeve (33); an annular portion (35) recessed inwardly is provided in the height direction of the lifting block (34); a resisting block (36) is fixedly mounted on the outer wall of the lifting block (34); a force unloading rod (38) mounted on a second spring (37) is provided between the resisting blocks (36); one end of the second spring (37) extends to the side wall of the sleeve (33); and the force unloading rod (38) is made of elastic plastic.

7. The compressive testing device for mirror surface according to claim 6, characterized in that: The bottom end of the lifting block (34) is connected to the pushing plate (39), the pushing plate (39) and the bottom end of the inner wall of the sleeve (33) are connected via a second telescopic rod (40), and a limited position cavity is formed between the pushing plate (39) and the inner wall of the sleeve (33).

8. The compressive testing device for mirror surface according to claim 6, characterized in that: The output shaft of the driving motor (12) and the driving wheel (13) are connected via a coupling, the driving wheel (13) and the driven wheels (15) at both ends rotate at the same speed, and the conveyor belts (16) are distributed on the outer wall of the driving wheel (13) in an up-and-down staggered manner.

9. The compressive testing device for mirror surface according to claim 1, characterized in that: The inclined opening of the first triangular plate (6) is arranged toward the material guide port (9), and a handle is detachably mounted on the outer wall of the collection box (10); as the handle pushes the collection box (10), the collection box (10) and the workbench (1) are closed or separated from each other.

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