A glass lens breaking machine

Abstract

The application discloses a kind of glass lens's machine of splitting, including rack, ejector rod assembly, die, punch driven by air cylinder and linear guide pair;Linear guide pair includes upper slider and lower slider, linear guide pair is fixed vertically on rack;Punch is installed on upper slider, and die is installed on lower slider;Ejector rod assembly includes base and multiple ejector rods, base is placed on rack, and is located directly below die;The middle part of base includes a recess accommodating workpiece, and multiple ejector rods are fixed on the bottom surface of base recess;The periphery of base is higher than the top surface of ejector rod, and the inner wall of four sides of base top is used as the positioning surface of workpiece;Punch includes multiple punch rods, and die includes the same number of guide holes as punch rod, and punch rod of punch passes through guide hole of die;The lower end of die includes the pressing surface of workpiece.The application uses the inner wall of four sides of base top as the positioning surface of workpiece, facilitates workpiece alignment, and has high splitting efficiency and low product rejection rate.

Description

Technical Field

[0001] This invention relates to equipment for processing glass lenses, and more particularly to a glass lens cleaver. Background Technology

[0002] Sapphire wafers are characterized by their high strength and difficulty in cutting. To obtain high-precision lenses, large wafers need to be precisely diced and cleaved. High-precision dicing can be achieved using laser cutting to divide the wafer into many smaller glass lenses. However, laser cutting only creates cracks in the material and does not completely separate the glass lenses. Therefore, the large wafer after laser cutting needs to be further cleaved to obtain smaller glass lenses.

[0003] The invention with application number CN201610155578.3 relates to a sapphire wafer dicing apparatus and method based on laser scribing technology. It is used to dice sapphire wafers with closed patterns formed by laser scribing. The apparatus includes a base with multiple pillars on it, the pillars corresponding to the closed patterns on the sapphire wafer; and a pressure head, disposed opposite the base, with multiple holes corresponding to the pillars. The base and pressure head can move relative to each other in a straight line, thus performing a shearing action on the sapphire wafer with closed patterns placed therein, causing the closed patterns on the sapphire wafer to detach from the substrate. During dicing, this invention places the sapphire wafer with closed patterns formed by laser scribing on the base, ensuring that the closed patterns on the sapphire wafer correspond to the positions of the pillars. There is no positioning device between the sapphire wafer and the base. The alignment of the closed pattern on the sapphire wafer with the columnar object on the base is difficult and time-consuming. This not only results in low dicing efficiency, but also in high product defect rate because the workpiece cannot be fixed and is prone to displacement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a glass lens cleaver with high cleaving efficiency and low product defect rate.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is a glass lens cleaving machine, comprising a frame, a push rod assembly, a pressing die, a cylinder-driven punch, and a linear guide pair; the linear guide pair includes an upper slide block and a lower slide block, and the guide rail of the linear guide pair is vertically fixed on the frame; the punch is mounted on the upper slide block, and the pressing die is mounted on the lower slide block; the push rod assembly includes a base and a plurality of push rods, the base is placed on the frame, located directly below the pressing die; the center of the base includes a groove for accommodating the workpiece, the plurality of push rods are vertically arranged in the groove, the lower ends are fixed to the bottom surface of the groove of the base, and the top surface of the push rods is the support surface of the workpiece; the periphery of the base is higher than the top surface of the push rods, and the inner walls of the four sides of the top of the base serve as the positioning surface of the workpiece; the punch includes a plurality of punches for stamping waste, the pressing die includes a number of guide holes equal to the number of punches, and the punches of the punch pass through the guide holes of the pressing die; the lower end of the pressing die includes a pressing surface for the workpiece.

[0006] The glass lens cleaver described above includes a pressing mold, a pressing mold frame, and pressing rods of the same number as the push rods. The pressing mold is fixed on the pressing mold frame, which is fixed on the lower slide block. The top end of the pressing rod is fixed on the bottom surface of the pressing mold, and the pressing rod is coaxial with the corresponding push rod. The guide holes are arranged on the pressing mold and are arranged laterally in a staggered manner with the pressing rods.

[0007] The glass lens cleaver described above has a greater number of punches than pressure bars, with the array of pressure bars arranged within the array of punches. The cross-section of each punch is cross-shaped, and the lower end of each punch includes a tapered head. Each pressure bar is surrounded by four punches.

[0008] The glass lens cleaver described above has four cutting edges on the edge of the workpiece, and the extension lines of the four cutting edges intersect to form a square; the four cutting edges of the workpiece are respectively positioned by the inner walls of the four sides of the top of the base.

[0009] The glass lens cleaver described above has a frame including an L-shaped support, which includes a base plate and a vertical plate, with the base plate and vertical plate connected in an L-shape. The top rod assembly includes a positioning seat, which is fixed to the base plate of the L-shaped support. The center of the positioning seat includes a non-circular anti-rotation positioning hole, and the lower part of the base of the top rod assembly is placed in the anti-rotation positioning hole. The shape of the lower part of the base is adapted to the anti-rotation positioning hole.

[0010] The glass lens cleaver described above includes two compression springs, two telescopic rods, and two swinging pressure plates. The two compression springs are arranged vertically. The first compression spring is arranged between the pressing mold and the base plate of the L-shaped support, and the second compression spring is arranged between the pressing mold and the punch. The two swinging pressure plates are arranged on both sides of the push rod assembly, including a pressure plate and a pin. The lower end of the pin is fixed to the frame, and the first end of the pressure plate is hinged to the upper end of the pin. When the pressing mold descends to the lowest point, the pressure plate is rotated, and the second end of the pressure plate presses against the top surface of the edge of the pressing mold. The punch and the pressing mold are connected by two telescopic rods, which are arranged on both sides of the punch and the pressing mold. The lower end of the telescopic rod is connected to the pressing mold, and the upper end of the telescopic rod is connected to the punch.

[0011] The glass lens cleaver described above includes a sliding groove hole at the upper end of the telescopic rod arranged along the axial direction of the telescopic rod; the lower end of the telescopic rod is hinged to the die, and each side of the die includes a pin, which is inserted into the sliding groove hole at the upper end of the telescopic rod.

[0012] The glass lens cleaver described above has a frame including a support base and a cylinder mounting plate. The rear end of the cylinder mounting plate is fixed to the top of the L-shaped support plate. The cylinder is fixed to the front end of the cylinder mounting plate, and the lower end of the cylinder piston rod includes a floating joint, which is connected to the top of the die. The support base includes a rectangular support plate and four feet. The bottom plate of the L-shaped support is fixed to the middle of the support plate. The four feet are respectively installed at the four corners of the support plate.

[0013] The glass lens cleaver described above includes a manual compressed air valve, which is fixed on the frame and located on one side of the push rod assembly. The cylinder is connected to the manual compressed air valve.

[0014] The glass lens cleaver described above includes a manual compressed air valve, which is fixed on the frame and located on one side of the push rod assembly. The cylinder is connected to the manual compressed air valve. The punch includes a punch plate and a punch frame, which is fixed on the upper slide block. A plurality of punch rods are installed at the bottom of the punch plate. The punch plate is arranged below the punch frame and is connected to the punch frame through a bracket.

[0015] The glass cleaver described above includes the following steps during operation:

[0016] 1) Place the scribing-processed workpiece into the groove of the base of the push rod assembly, with the bottom surface of the workpiece supported by the push rod; the cut edges of the workpiece are positioned by the inner walls of the four sides of the top of the base.

[0017] 2) Pull the die down to compress the first spring until the lower end of the die's pressure rod touches the top surface of the workpiece; as the die moves downward, the two telescopic rods drive the punch and the piston rod of the cylinder to move downward simultaneously.

[0018] 3) Rotate the two swinging pressure plates so that the second end of the pressure plate presses against the top surface of the side edge of the mold;

[0019] 4) Press down the die to make the punch stick abut against the top surface of the workpiece; supply air to the cylinder, and the compressed air pushes the piston rod of the cylinder to extend further downward, pushing the die downward. The punch stick at the bottom of the die will flush away the waste material around the lens of the workpiece.

[0020] This invention utilizes the inner walls of the four sides of the top of the base as the positioning surface of the workpiece, which facilitates workpiece alignment; the pressing surface at the lower end of the die presses the workpiece before the splitting and stamping, so the workpiece will not shift, resulting in high splitting efficiency and low product defect rate. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a front view of the glass lens cleaver according to an embodiment of the present invention.

[0023] Figure 2 This is a left view of the glass lens cleaver according to an embodiment of the present invention.

[0024] Figure 3 yes Figure 1 AA section view in the image.

[0025] Figure 4 Yes, yes Figure 2 BB section view in the middle.

[0026] Figure 5 This is a perspective view of a glass lens cleaver according to an embodiment of the present invention.

[0027] Figure 6 This is an exploded view of the main components of the glass lens cleaver according to an embodiment of the present invention.

[0028] Figure 7 yes Figure 4 CC section view in the image.

[0029] Figure 8 This is a top view of the top rod assembly according to an embodiment of the present invention.

[0030] Figure 9 This is a perspective view of the base and the top rod of the top rod assembly according to an embodiment of the present invention.

[0031] Figure 10 This is a perspective view of the positioning seat according to an embodiment of the present invention.

[0032] Figure 11 This is a perspective view of the pressing plate and pressing rod of the pressing mold in an embodiment of the present invention.

[0033] Figure 12This is a bottom view of the pressing plate and pressing rod of the pressing mold in an embodiment of the present invention.

[0034] Figure 13 This is a perspective view of the workpiece in an embodiment of the present invention.

[0035] Figure 14 This is a top view of the workpiece in an embodiment of the present invention. Detailed Implementation

[0036] The structure and principle of the glass lens cleaver in this invention are as follows: Figures 1 to 14 As shown, it includes a frame 100, a push rod assembly 10, a pressure mold 20, a punch mold 30, a linear guide pair 40, a cylinder 54, a manual compressed air valve 63, two compression springs, two telescopic rods 23, and two swing pressure plates.

[0037] The frame 100 includes an L-shaped bracket 50, a support base 60, and a cylinder mounting plate 53. The support base 60 includes a rectangular support plate 61 and four foot cups 62. The four foot cups 62 are respectively installed at the four corners of the support plate 61.

[0038] The L-shaped bracket 50 includes a base plate 51 and an upright plate 52, with the base plate 51 and the upright plate 52 connected in an L-shape. The base plate 51 of the L-shaped bracket 50 is fixed to the middle of the top surface of the support plate 61.

[0039] The linear guide pair 40 has an upper slider 41 and a lower slider 42, and the guide rail 43 of the linear guide pair 40 is vertically fixed on the upright plate 52. The punch 30 is mounted on the upper slider 41, and the pressure die 20 is mounted on the lower slider 42. The ejector assembly 10 is mounted on the base plate 51, located below the pressure die 20.

[0040] The push rod assembly 10 includes a positioning seat 10A, a base 10B, and multiple push rods 11. The positioning seat 10A is fixed to the base plate 51 of the L-shaped bracket 50. The positioning seat 10A has a non-circular anti-rotation positioning hole 19 in the middle. The lower part of the base 10B is placed in the anti-rotation positioning hole 19. The shape of the lower part of the base 10B is adapted to the anti-rotation positioning hole 19, and the base 10B can be removed from the anti-rotation positioning hole of the positioning seat 10A.

[0041] The base 10B has a groove 12 in the middle to accommodate the workpiece 80. An array of vertical push rods 11 is arranged in the groove 12. The lower end of the push rod 11 is fixed to the bottom surface of the groove 12 of the base 10B, and the top surface of the push rod 11 is the support surface of the workpiece 80. The periphery of the base 10B is higher than the top surface of the push rod 11, and the inner walls 13 on the four sides of the top of the base 10B are the positioning surfaces of the workpiece 80.

[0042] The punch die 30 includes a punch plate 30A, a punch die holder 30B, and punch rods 31 of the same number as the ejector pins 11 for punching waste. The punch die holder 30B is fixed on the upper slide block 41, and the punch rods 31 are installed at the bottom of the punch plate 30A. The punch plate 30A is arranged below the punch die holder 30B and is connected to the punch die holder 30B through a bracket 32.

[0043] The pressure mold 20 includes a pressure plate 20A, a pressure mold frame 20B, and pressure rods 21 in the same number as the ejector rods 11. The pressure plate 20A is fixed on the pressure mold frame 20B, and the pressure mold frame 20B is fixed on the lower slide block 42. The top end of the pressure rod 21 is fixed on the bottom surface of the pressure plate 20A. The pressure rod 21 is coaxial with the corresponding ejector rod 11, and the lower end surface of the pressure rod 21 is the clamping surface of the workpiece 80.

[0044] The die plate 20A has the same number of guide holes 22 as the punches 31, and the guide holes 22 and the punches 21 are arranged alternately in the transverse direction. The punches 31 of the die 30 pass through the corresponding guide holes 22 on the die 20.

[0045] The number of punches 31 is greater than the number of pressure bars 21, and the array of pressure bars 21 is arranged within the array of punches 31. The cross-section of the punches 31 is cross-shaped, and the lower end of the punches 31 includes a tapered head. Each pressure bar 21 is surrounded by four punches 31. There are six punch clearance grooves 14 on the inner walls 13 of the four sides of the base 10B.

[0046] The edge of the workpiece 80 has four orthogonal tangent edges 81, and the extensions of the four tangent edges 81 intersect to form a square. The four tangent edges 81 of the edge of the workpiece 80 are respectively positioned by the inner walls 13 of the four sides of the top of the base 10B.

[0047] Two compression springs are arranged vertically. The first compression spring 44 is arranged between the die 20 and the base plate 51 of the L-shaped bracket 50, and the second compression spring 45 is arranged between the die 20 and the punch 30. Two swinging pressure plates 70 are arranged on both sides of the push rod assembly 10. The swinging pressure plate 70 includes a pressure plate 71 and a pin 72. The lower end of the pin 72 is fixed to the support plate, and the first end of the pressure plate 71 is hinged to the upper end of the pin 72. When the die 20 descends to its lowest point, the pressure plate 71 is rotated, and the second end of the pressure plate 71 presses against the top surface of the side edge of the die holder 20B.

[0048] Two telescopic rods 23 are arranged on both sides of the punching die 30 and the pressing die 20. The lower end of the telescopic rod 23 is connected to the pressing die 20, and the upper end of the telescopic rod 23 is connected to the punching die 30.

[0049] The upper end of the telescopic rod 23 includes a sliding groove 24 arranged axially along the telescopic rod 23. The lower end of the telescopic rod 23 is hinged to the die holder 20B. Each side of the die holder 30B includes a pin 33, which is inserted into the sliding groove 24 at the upper end of the telescopic rod 23. Under the pressure of the cylinder 54, the vertical distance between the die 30 and the die 20 can be reduced; under the elastic force of the second compression spring 45, the vertical distance between the die 30 and the die 20 can be restored, but the maximum vertical distance between the die 20 and the die 30 is limited by the telescopic rod 23.

[0050] The rear end of the cylinder mounting plate 53 is fixed to the top of the upright plate 52 of the L-shaped bracket 50. The cylinder 54 is fixed to the front end of the cylinder mounting plate 53, and the lower end of the piston rod of the cylinder 54 has a floating joint 55 that connects to the top of the punch 30.

[0051] The manual compressed air valve 63 is fixed on the frame 100 and located on the right side of the push rod assembly 10. The cylinder 54 is connected to the manual compressed air valve 63.

[0052] The working process of the glass lens cleaver in this embodiment of the invention is as follows:

[0053] 1) A sapphire wafer workpiece 80 with a closed pattern after laser scribing is placed in the groove 12 of the base 10B of the push rod assembly 10, and the bottom surface of the sapphire wafer workpiece 80 is supported by the push rod 11. The cut edge 81 of the sapphire wafer workpiece 80 is positioned by the inner walls 13 of the four sides of the top of the base 10B.

[0054] 2) Pull the die 20 downwards to compress the first spring 44 until the lower end face of the pressure rod 21 of the die 20 touches the top surface of the workpiece 80. When the die 20 moves downwards, it drives the piston rod of the punch 30 and the cylinder 54 to move downwards simultaneously through the two telescopic rods 23.

[0055] 3) Rotate the pressure plate 71 of the two swing pressure plates 70 so that the second end of the pressure plate 71 presses against the top surface of the side edge of the mold frame 20B, and the mold 20 will not spring back.

[0056] 4) Press down the die 30 so that the punch rod 31 abuts against the top surface of the workpiece; pull the handle of the manual compressed air valve 63 to supply air to the cylinder 54. The compressed air pushes the piston rod of the cylinder 54 to extend further downward, pushing the die 30 downward. The punch rod 31 at the bottom of the die 30 removes the waste material around the lens of the sapphire wafer workpiece 80.

[0057] 5) Reverse the manual compressed air valve to release air from cylinder 54. The elastic force of the second compression spring 45 causes the piston rod of the punch 30 and cylinder 54 to move upward simultaneously by one stroke.

[0058] 6) Rotate the pressure plate 71 of the two swing pressure plates 70 in the opposite direction to release the pressure mold frame 20B. The elastic force of the first compression spring 44 causes the pressure mold frame 20B to return to its original position. At the same time, the piston rod of the punch 30 and the cylinder 54 also return to their initial positions.

[0059] 7) Take out the base 10B from the non-circular anti-rotation positioning hole 19 of the positioning seat 10A, flip the base 10B, and pour out the completed lens and waste material for sorting.

[0060] The above embodiments of the present invention use non-circular workpieces. The inner walls of the four sides of the top of the base are used as the positioning surfaces of the workpieces, which facilitates the alignment of the workpieces. The pressing surface at the lower end of the die before the splitting stamping presses the workpieces, so the workpieces will not shift. The splitting efficiency is high and the product defect rate is low.

Claims

1. A glass lens cleaving machine, comprising a frame, characterized in that it includes a push rod assembly, a die, a cylinder-driven punch, and a linear guide pair; the linear guide pair includes an upper slide and a lower slide, the guide rail of the linear guide pair being vertically fixed to the frame; the punch is mounted on the upper slide, and the die is mounted on the lower slide; the push rod assembly includes a base and a plurality of push rods, the base being placed on the frame and located directly below the die; the center of the base includes a groove for accommodating a workpiece, the plurality of push rods being vertically arranged in the groove, the lower ends being fixed to the bottom surface of the groove, the top surface of the push rods serving as the support surface for the workpiece; the periphery of the base is higher than the top surface of the push rods, and the inner walls of the four sides of the top of the base serve as the positioning surface for the workpiece; the punch includes a plurality of stamping waste rods. The die includes a die plate, a die frame, guide holes equal in number to the punches, and pressure rods equal in number to the ejector pins. The punches pass through the guide holes of the die. The lower end of the die includes a pressing surface for the workpiece. The pressure rods are coaxial with their corresponding ejector pins, and the guide holes and pressure rods are arranged alternately in the transverse direction. The die plate is fixed on the die frame, and the die frame is fixed on the lower slide block. The top of the pressure rod is fixed on the bottom surface of the die plate, and the guide holes are arranged on the die plate. The number of punches is greater than the number of pressure rods, and the array of pressure rods is arranged in the array of punches. The cross-section of the punch is cross-shaped, and the lower end of the punch includes a conical head. Each pressure rod is surrounded by four punches. The inner walls of the four sides of the base include a plurality of punch clearance grooves.

2. The glass lens cleaver according to claim 1, characterized in that, The edge of the workpiece includes four cut edges, and the extension lines of the four cut edges intersect to form a square; the four cut edges of the workpiece are respectively positioned by the inner walls of the four sides of the top of the base.

3. The glass lens cleaver according to claim 2, characterized in that, The frame includes an L-shaped bracket, which includes a base plate and an upright plate, with the base plate and the upright plate connected in an L-shape. The top rod assembly includes a positioning seat, which is fixed to the base plate of the L-shaped bracket. The center of the positioning seat includes a non-circular anti-rotation positioning hole, and the lower part of the top rod assembly base is placed in the anti-rotation positioning hole. The shape of the lower part of the base is adapted to the anti-rotation positioning hole.

4. The glass lens cleaver according to claim 3, characterized in that, It includes two compression springs, two telescopic rods, and two swing pressure plates. The two compression springs are arranged vertically. The first compression spring is arranged between the die and the base plate of the L-shaped bracket, and the second compression spring is arranged between the die and the punch. The two swing pressure plates are arranged on both sides of the push rod assembly, including a pressure plate and a pin. The lower end of the pin is fixed to the frame, and the first end of the pressure plate is hinged to the upper end of the pin. When the die descends to the lowest point, the pressure plate is rotated, and the second end of the pressure plate presses against the top surface of the die edge. The die and the punch are connected by two telescopic rods, which are arranged on both sides of the die and the punch. The lower end of the telescopic rod is connected to the die, and the upper end of the telescopic rod is connected to the punch.

5. The glass lens cleaver according to claim 4, characterized in that, The upper end of the telescopic rod includes a sliding groove hole arranged along the axial direction of the telescopic rod; the lower end of the telescopic rod is hinged to the die, and each side of the die includes a pin, which is inserted into the sliding groove hole at the upper end of the telescopic rod.

6. The glass lens cleaver according to claim 3, characterized in that, The frame includes a support base and a cylinder mounting plate. The rear end of the cylinder mounting plate is fixed to the top of the L-shaped bracket upright plate. The cylinder is fixed to the front end of the cylinder mounting plate. The lower end of the cylinder piston rod includes a floating joint, which is connected to the top of the punch. The support base includes a rectangular support plate and four feet. The bottom plate of the L-shaped bracket is fixed to the middle of the support plate. The four feet are respectively installed at the four corners of the support plate.

7. The glass lens cleaver according to claim 1, characterized in that, It includes a manual compressed air valve, which is fixed on the frame and located on one side of the ejector assembly. The cylinder is connected to the manual compressed air valve. The punch includes a punch plate and a punch frame. The punch frame is fixed on the upper slide block. A plurality of punch rods are installed at the bottom of the punch plate. The punch plate is arranged below the punch frame and is connected to the punch frame through a bracket.

8. The glass lens cleaver according to claim 5, characterized in that, The operation of a flaking machine includes the following steps: 1) Place the scribing-processed workpiece into the groove of the base of the ejector assembly, with the bottom surface of the workpiece supported by the ejector rod; the cut edge of the workpiece is positioned by the inner walls of the four sides of the top of the base; 2) Pull the die down to compress the first compression spring until the lower end of the die's pressure rod touches the top surface of the workpiece; as the die descends, the two telescopic rods drive the punch and the piston rod of the cylinder to descend simultaneously; 3) Rotate the two swing plates so that the second end of the plates presses against the top surface of the die's side edge; 4) Press down the punch so that the punch rod touches the top surface of the workpiece; supply air to the cylinder, and the compressed air pushes the piston rod of the cylinder to extend further downward, pushing the punch down, and the punch rod at the bottom of the die removes the waste material around the lens of the workpiece.

Images