Cylindrical mirror drawing equipment

Abstract

The utility model discloses cylindrical mirror drawing equipment, relates to a manufacturing technology of optical glass products, and in particular relates to drawing equipment for continuously producing high-precision cylindrical mirrors. Comprising a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), a cutting unit (5), a vertical tower (6), a gas control unit (7), an electrical control unit (8) and a master control operation station (9). A rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4) and a cutting unit (5) are sequentially arranged on the front face of a vertical tower (6) from top to bottom, a gas control unit (7) and an electrical control unit (8) are arranged on the side face of the vertical tower (6), and a master control operation station (9) is arranged beside the vertical tower (6). By optimizing process parameters of heating, stretching, cooling and the like, efficient and continuous production of the cylindrical mirror is realized, and the cylindrical mirror production device has the characteristics of high production efficiency, low cost and good size consistency.

Description

Technical Field

[0001] This utility model relates to the manufacturing technology of optical glass products, and in particular to a cylindrical mirror drawing device for continuous production of high-precision cylindrical mirrors. Background Technology

[0002] Cylindrical mirrors, due to their unique optical properties, have wide applications in laser systems, imaging systems, and optical instruments. While cylindrical mirrors are typically manufactured using a drawing technique, existing methods have limitations in improving dimensional accuracy, straightness, and optical performance. To meet the higher precision and quality requirements of modern optical systems, it is necessary to develop a drawing device and method capable of continuously producing high-quality cylindrical mirrors.

[0003] Traditional methods for manufacturing cylindrical mirrors have the following main problems:

[0004] 1. Poor dimensional consistency: Due to the difficulty in accurately controlling factors such as stretching speed and temperature during a single stretching process, the dimensional consistency of cylindrical mirrors is not high.

[0005] 2. Insufficient straightness: During the drawing process, uneven heating and inconsistent cooling rates can easily cause the cylindrical mirror to bend, affecting its straightness.

[0006] 3. Low production efficiency: Traditional drawing methods are usually intermittent production, producing only one cylindrical mirror at a time, resulting in low production efficiency.

[0007] 4. Higher cost: The cost of a single drawing process is high, and multiple drawing processes are required to obtain a qualified product, resulting in an overall increase in cost.

[0008] To address the aforementioned issues, this invention proposes a cylindrical mirror drawing device. By optimizing process parameters such as heating, stretching, and cooling, it achieves efficient and continuous production of cylindrical mirrors, featuring high production efficiency, low cost, good dimensional consistency, and high straightness. Summary of the Invention

[0009] The technical problem to be solved by this utility model is to provide a cylindrical mirror drawing device, which is a device for continuous production of high-precision cylindrical mirrors, in order to achieve the goal of continuous production of high-precision cylindrical mirrors, in order to address the defects of poor dimensional consistency, insufficient straightness, low production efficiency and high cost in the existing technology.

[0010] The technical solution adopted by this utility model to solve the above problems is:

[0011] A cylindrical mirror drawing device includes a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), a cutting unit (5), a vertical tower (6), a gas control unit (7), an electrical control unit (8), and a main control station (9).

[0012] The vertical tower (6) is equipped with a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), and a cutting unit (5) from top to bottom on the front. The vertical tower (6) is equipped with a gas control unit (7) and an electrical control unit (8) on the side. The main control station (9) is placed next to the vertical tower (6).

[0013] The rod feeding unit (1) includes a linear module (101), a center position XYR fine adjustment device (102), a tension detector (103), a preform rod tail shank (104), a cylindrical mirror mother rod (105), and a rod feeding operation station (106).

[0014] The heating unit (2) includes a heating unit support (201), a heating device (202), an upper chimney (203), and a preheating pipe (204).

[0015] The diameter measuring unit (3) includes a diameter measuring instrument bracket (301) and a two-dimensional diameter measuring instrument (302).

[0016] The traction unit (4) includes a limit stop (401), a traction bracket (402), a large-mouth mechanical clamp (403), a driving synchronous pulley (404), a driven synchronous pulley (405), a synchronous belt (406), a synchronous belt stop (407), a micrometer (knob) (408), and a synchronous belt drive motor (409).

[0017] The cutting unit (5) includes an up-and-down linear module (501), a left-and-right moving component (502), and a cutting component (503).

[0018] The cylindrical mirror rod (105) used in the rod feeding unit (1) has a cross-sectional dimension of 24mm*12mm and a material softening point of 692℃. The heating unit (2) has a temperature range of 100-1000℃.

[0019] According to the above technical solution, the cylindrical mirror drawing equipment is provided with the following components on the front of the vertical tower (6) from top to bottom: rod feeding unit (1), heating unit (2), diameter measuring unit (3), traction unit (4), and cutting unit (5); the side of the vertical tower (6) is provided with: gas control unit (7) and electrical control unit (8); and the main control station (9) is placed next to the vertical tower (6).

[0020] According to the above technical solution, the rod feeding unit (1) includes a linear module (101), a center position XYR fine adjustment device (102), a tension detector (103), a precast rod tail shank (104), a cylindrical mirror mother rod (105), and a rod feeding operation station (106). The linear module (101) is fixed on one section of the vertical tower (6). The center position XYR fine adjustment device (102), the tension detector (103), and the precast rod tail shank (104) are installed on the L-shaped mounting bracket on the linear module (101). The cylindrical mirror mother rod (105) is clamped on the precast rod tail shank (104). The rod feeding operation station (106) is placed on the right side of the tower and is used to control the start, stop, speed increase, speed decrease, and emergency stop of the entire rod feeding process.

[0021] According to the above technical solution, the heating unit (2) includes a heating unit support (201), a heating device (202), an upper chimney (203), and a preheating pipe (204). The heating unit support (201) is fixed in the middle section of the vertical tower (6), the heating device (202) is installed on the heating unit support (201), and the upper chimney (203) and the preheating pipe (204) are respectively installed above the heating device (202) for heat preservation and preheating of the precast rods on the upper part of the heating device (202).

[0022] The heating device (202) is equipped with a temperature setting of 820℃-840℃. The preheating tube (204) is equipped with a temperature setting of 600℃-690℃.

[0023] According to the above technical solution, the diameter measuring unit (3) includes a diameter measuring instrument bracket (301) and a two-dimensional diameter measuring instrument (302). The diameter measuring instrument bracket (301) is fixed in the middle section of the vertical tower (6) and placed below the heating unit (2). The two-dimensional diameter measuring instrument (302) is installed on the diameter measuring instrument bracket (301) and tilted at 45° for detecting the length and width of the cylindrical mirror.

[0024] According to the above technical solution, the traction unit (4) includes a limit stop (401), a traction bracket (402), a large-mouth mechanical clamp (403), an active synchronous pulley (404), a driven synchronous pulley (405), a synchronous belt (406), a synchronous belt stop (407), a micrometer (knob) (408), and a synchronous belt drive motor (409).

[0025] The limit stop (401) is fixed in the middle section of the vertical tower (6) and placed below the diameter measuring unit (3) for limiting the straightening of the finished product. The traction bracket (402) is fixedly installed in the lower part of the middle section of the vertical tower (6). The synchronous belt drive motor (409), the driving synchronous pulley (404), the driven synchronous pulley (405), and the synchronous belt stop (407) are all installed on the traction bracket (402). The synchronous belt (406) is installed on the driving synchronous pulley (404) and the driven synchronous pulley (405). The large-mouth mechanical clamp (403) is installed on the synchronous belt (406). The large-mouth mechanical clamp (403) moves up and down with the synchronous belt (406) to pull and tug the cylindrical mirror bar material.

[0026] The synchronous belt drive motor (409) drives two sets of synchronous belts (406) to move up and down through two sets of active synchronous pulleys (404) and driven synchronous pulleys (405), and clamps and pulls the cylindrical mirror rod material through a large-mouth mechanical clamp (403).

[0027] The large-mouth mechanical clamp (403) uses compressed air from one of the gas control units (7) to control the input pressure and filter compressed air water mist through a pressure regulating filter, control the opening and closing of the mechanical clamp (403) through a two-position five-way solenoid valve, and control the clamping force through a precision pressure reducing valve.

[0028] According to the above technical solution, the cutting unit (5) includes an upper and lower linear module (501), a left and right moving component (502), and a cutting component (503). The upper and lower linear module (501) is fixed to the lower section of the vertical tower (6), the left and right moving component (502) is installed on the upper and lower linear module (501), and the cutting component (503) is installed on the left and right moving component (502).

[0029] According to the above technical solution, the cylindrical mirror drawing equipment is characterized in that the vertical tower (6) includes three sections: upper, middle and lower, and the lower tower is installed on the base plate and fixed to the ground by expansion bolts to ensure the stability of the equipment.

[0030] According to the above technical solution, the cylindrical mirror drawing equipment is characterized in that the gas control unit (7) includes two gas streams: argon and compressed air. The argon is used to create positive pressure inside the furnace to prevent external air from entering the heating device (202). The other compressed air stream is used to control the opening and closing of the large-mouth mechanical clamp (403) in the traction unit (4) to clamp the product.

[0031] According to the above technical solution, the cylindrical mirror drawing equipment is characterized in that the electrical control unit (8) is used to monitor and adjust various parameters of the entire drawing process. The electrical control unit (8) is equipped with electrical control switches, AC contactors, relays, PLC programmable controllers, displays, servo motor controllers, and other electrical control devices.

[0032] According to the above technical solution, the cylindrical mirror drawing equipment is characterized in that the main control station (9) is equipped with a touch screen with a graphical user interface to display all key process parameters, including running speed, tension value, equipment power and product size; it is equipped with control buttons, including traction closing, traction opening, traction speed increase, traction speed decrease, product cutting, fault reset, and equipment emergency stop; it is equipped with a communication module that can communicate with various parts of the cylindrical mirror drawing equipment, collect sensor data and send control commands; it is equipped with data recording and analysis tools, and the built-in data recording system can save long-term historical data for subsequent analysis and quality traceability.

[0033] A method for drawing cylindrical mirrors using a drawing device, comprising the following steps:

[0034] 1. Preparation stage

[0035] Ensure that all mechanical transmissions, electrical controls, and auxiliary facilities are in good working order;

[0036] Select a cylindrical mirror mother rod that meets the requirements, install it on the connecting tail shank, and then insert it into the rod feeding unit (1).

[0037] 2. Passing the bat

[0038] The cylindrical mirror master rod with a cross section of 12mm*24mm is smoothly transported to the heating zone of the heating device (202) through the preheating pipe (204) via the rod feeding unit (1).

[0039] 3. Heating

[0040] The heating unit (2) is electrically heated by the heating device (202) to slowly raise the heating zone of the heating unit (2) to 820℃-840℃, reducing the stress caused by excessive temperature difference, and locally heating the mother rod to soften it but not melt it.

[0041] 4. Stretching

[0042] When the mother rod is heated to 820℃-840℃ in the heating zone of the heating device (202), the tail end of the mother rod will fall off the material head due to gravity. After the material head is cut off, the traction unit (4) will start to stretch it under constant tension. At this time, the rod feeding unit (1) will steadily send the cylindrical mirror mother rod to the high temperature zone at a speed of 2mm-20mm / min. The temperature of the high temperature heating zone is 820℃-840℃. The traction unit (4) stretches downward at 72mm-720mm / min. The product size is fed back by the dual-dimensional diameter measuring instrument (302) on the diameter measuring unit (3). The rod feeding speed, heating temperature and traction speed are finely adjusted to obtain a 2mm*4mm cylindrical mirror product.

[0043] 5. cut off

[0044] The length of the formed cylindrical mirror is calculated based on the traction speed and the diameter of the traction wheel. Once the predetermined length of 200mm or 300mm is reached, a cutting action is immediately triggered. The cutting unit (5) synchronizes its speed with the speed of the drawn product through the upper and lower linear modules (501), and the diamond cutting blade driven by the servo motor quickly and accurately cuts the cylindrical mirror. The cutting position should be as perpendicular as possible to the axis of the cylindrical mirror to ensure a flat end face. The predetermined length of the cylindrical mirror is 200mm or 300mm, etc.

[0045] 6. Collection and Testing

[0046] The cut cylindrical mirror is sent to a designated area for storage; the cut cylindrical mirror is cooled at room temperature.

[0047] Perform necessary quality inspections on the finished products, such as visual inspection and dimensional measurement, to ensure that they meet customer requirements.

[0048] This utility model discloses a cylindrical mirror drawing device with a reasonable design. It is equipped with a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), a cutting unit (5), a vertical tower (6), a gas control unit (7), an electrical control unit (8), and a main control station (9). The reasonable design realizes the efficient and continuous production of cylindrical mirrors with high production efficiency and good product quality.

[0049] This utility model discloses a method for drawing cylindrical mirrors using a continuous drawing process. The entire process, from feeding the rod to cutting, can be carried out continuously, greatly shortening the production cycle, significantly improving the production efficiency and product quality of cylindrical mirrors, and reducing production costs. In particular, by precisely controlling key parameters such as the feeding speed, heating temperature, stretching speed, and tension, efficient and continuous production of cylindrical mirrors is achieved, featuring high production efficiency, low cost, good dimensional consistency, and high straightness.

[0050] This utility model discloses a cylindrical mirror drawing device that utilizes efficient induction heating, enabling the material to be heated to the required temperature in a short time without generating cooling media or waste gas, thus reducing energy waste and environmental pollution. The equipped main control station not only controls each part but also has a built-in data recording system that records all process parameters in detail, facilitating later quality traceability and problem analysis. This highly automated equipment reduces labor costs and alleviates the workload of workers.

[0051] In conclusion, cylindrical lens drawing equipment not only achieves efficient and precise manufacturing at the technical level, but also demonstrates significant advantages in terms of economic benefits and social responsibility. The application of this technology and method has brought significant progress and development opportunities to the optical component manufacturing industry. Attached Figure Description

[0052] Figure 1 This is a right view of the cylindrical mirror drawing device scheme in this utility model embodiment;

[0053] Figure 2 This is a front view of the cylindrical mirror drawing equipment scheme in this utility model embodiment;

[0054] Figure 3 A partial schematic diagram of the components of the traction unit (4) of the cylindrical mirror pulling device;

[0055] Figure 4 A schematic diagram of the cutting unit (5) of the cylindrical mirror drawing equipment;

[0056] Figure 5 A schematic diagram of the left and right moving assembly (502) of the cutting unit (5) of the cylindrical mirror drawing device;

[0057] Figure 6 A schematic diagram of the cutting assembly (503) of the cutting unit (5) of the cylindrical mirror drawing device.

[0058] In the attached diagrams above, 1. Rod feeding unit; 101. Linear module; 102. Center position XYR fine-tuning device; 103. Tension detector; 104. Precast rod tail shank; 105. Cylindrical mirror mother rod; 106. Rod feeding operation station; 2. Heating unit; 201. Heating unit support; 202. Heating device; 203. Upper chimney; 204. Preheating pipe; 3. Diameter measuring unit; 301. Diameter measuring instrument support; 302. Two-dimensional diameter measuring instrument; 4. Traction unit; 401. 402. Limit stop bar; 403. Traction bracket; 404. Large-mouth mechanical clamp; 405. Active synchronous pulley; 406. Driven synchronous pulley; 407. Synchronous belt; 408. Synchronous belt stop block; 409. Micrometer (knob); 5. Synchronous belt drive motor; 5. Cutting unit; 501. Up and down linear module; 502. Left and right moving assembly; 503. Cutting assembly; 6. Vertical tower; 7. Gas control unit; 8. Electrical control unit; 9. Main control station. Detailed Implementation

[0059] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] Reference Figures 1-6 A cylindrical mirror drawing device includes a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), a cutting unit (5), a vertical tower (6), a gas control unit (7), an electrical control unit (8), and a main control station (9).

[0061] The vertical tower (6) is equipped with a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), and a cutting unit (5) from top to bottom on the front. The vertical tower (6) is equipped with a gas control unit (7) and an electrical control unit (8) on the side. The main control station (9) is placed next to the vertical tower (6).

[0062] The rod feeding unit (1) includes a linear module (101), a center position XYR fine adjustment device (102), a tension detection (103), a preform rod tail shank (104), a cylindrical mirror mother rod (105), and a rod feeding operation station (106).

[0063] The heating unit (2) includes a heating unit support (201), a heating device (202), an upper chimney (203), and a preheating pipe (204).

[0064] The diameter measuring unit (3) includes a diameter measuring instrument bracket (301) and a two-dimensional diameter measuring instrument (302).

[0065] The traction unit (4) includes a limit stop (401), a traction bracket (402), a large-mouth mechanical clamp (403), a driving synchronous pulley (404), a driven synchronous pulley (405), a synchronous belt (406), a synchronous belt stop (407), a micrometer (knob) (408), and a synchronous belt drive motor (409).

[0066] The cutting unit (5) includes an up-and-down linear module (501), a left-and-right moving component (502), and a cutting component (503).

[0067] The cylindrical mirror rod (105) used in the rod feeding unit (1) has a cross-sectional dimension of 24mm*12mm and a material softening point of 692℃. The heating unit (2) has a temperature range of 100-1000℃.

[0068] Furthermore, the cylindrical mirror drawing equipment is provided with the following components in sequence on the front of the vertical tower (6): a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), and a cutting unit (5); the side of the vertical tower (6) is provided with a gas control unit (7) and an electrical control unit (8); and a main control station (9) is placed next to the vertical tower (6).

[0069] Furthermore, the rod feeding unit (1) includes a linear module (101), a center position XYR fine-tuning device (102), a tension detector (103), a precast rod tail shank (104), a cylindrical mirror mother rod (105), and a rod feeding operation station (106). The linear module (101) is fixed on one section of the vertical tower (6). The center position XYR fine-tuning device (102), the tension detector (103), and the precast rod tail shank (104) are mounted on an L-shaped mounting bracket on the linear module (101). The cylindrical mirror mother rod (105) is clamped on the precast rod tail shank (104). The rod feeding operation station (106) is placed on the right side of the tower and is used to control the start, stop, acceleration, deceleration, and emergency stop of the entire rod feeding process. The center position XYR fine-tuning device (102) is equipped with a commercially available XYR-axis three-axis displacement platform precision movement fine-tuning optical slide rotary table.

[0070] The linear module (101) is driven by a servo motor to move the ball screw slide up and down along the linear guide rail. The fiber position of the cylindrical mirror master rod (105) is precisely adjusted according to the center position XYR fine adjustment device (102) to ensure that the cylindrical mirror master rod (105) is centered. The center position XYR fine adjustment device (102) uses an XY displacement stage to control the cylindrical mirror master rod to make fine adjustments within ±10mm in the front-back and left-right directions. A precision rotating platform is installed on the XY displacement stage to control the rotation angle of the cylindrical mirror master rod along the Z-axis.

[0071] Furthermore, in the heating unit (2), the heating unit bracket (201) is fixed in the middle section of the vertical tower (6), the heating device (202) is installed on the heating unit bracket (201), and the upper chimney (203) and preheating pipe (204) are respectively installed above the heating device (202) for the function of heat preservation and preheating of the preformed rods on the upper part of the heating device (202).

[0072] The heating device (202) uses HRE heating wire and silicon carbide ceramic skeleton for the heating part, and 1400 ceramic fiber board and nano insulation board for the middle part. Two sets of K-type temperature measuring thermocouples are arranged symmetrically, one for feedback temperature control and the other for display.

[0073] The heating device (202) is equipped with a temperature setting of 820℃-840℃. The preheating tube (204) is equipped with a temperature setting of 600℃-690℃.

[0074] Furthermore, in the diameter measuring unit (3), the diameter measuring instrument bracket (301) is fixed in the middle section of the vertical tower (6) and placed below the heating unit (2). The dual-dimensional diameter measuring instrument (302) is installed on the diameter measuring instrument bracket (301) and tilted at 45° to detect the length and width of the cylindrical mirror.

[0075] The dual-dimensional diameter measuring instrument (302) has a measurement range of 0.1mm-25mm and an accuracy of ±1μm±0.008*Xz. It mainly monitors the length and width of the cylindrical mirror and adjusts the furnace temperature of the heating unit (2) and the traction speed of the traction unit (4) in real time through feedback so that the straightened product dimensions meet the requirements.

[0076] Furthermore, in the traction unit (4), the limiting stop (401) is fixed in the middle section of the vertical tower (6) and placed below the diameter measuring unit (3) for limiting the straightening of the finished product. The traction bracket (402) is fixedly installed in the lower part of the middle section of the vertical tower (6). The synchronous belt drive motor (409), the active synchronous pulley (404), the driven synchronous pulley (405), and the synchronous belt stop (407) are all installed on the traction bracket (402). The synchronous belt (406) is installed on the active synchronous pulley (404) and the driven synchronous pulley (405). The large-mouth mechanical clamp (403) is installed on the synchronous belt (406). The large-mouth mechanical clamp (403) moves up and down with the synchronous belt (406) to pull and tug the cylindrical mirror bar material.

[0077] The synchronous belt drive motor (409) drives two sets of synchronous belts (406) to move up and down through two sets of active synchronous pulleys (404) and driven synchronous pulleys (405), and clamps and pulls the cylindrical mirror rod material through a large-mouth mechanical clamp (403).

[0078] The large-mouth mechanical clamp (403) uses compressed air from one of the gas control units (7) to control the input pressure and filter compressed air water mist through a pressure regulating filter, control the opening and closing of the mechanical clamp (403) through a two-position five-way solenoid valve, and control the clamping force through a precision pressure reducing valve.

[0079] The limiting stop (401) consists of two parallel rollers mounted on the same rotating shaft. The rotational force of the rotating shaft is adjusted by the anti-loosening nut and the butterfly washer. The two parallel rollers are manually rotated to make their opening appropriate, so that the forward and backward movement of the cylindrical mirror is limited.

[0080] Furthermore, the cutting unit (5) includes an upper and lower linear module (501), a left and right moving component (502), and a cutting component (503). The upper and lower linear module (501) is fixed to the lower section of the vertical tower (6), the left and right moving component (502) is installed on the upper and lower linear module (501), and the cutting component (503) is installed on the left and right moving component (502).

[0081] The vertical linear module (501) is equipped with a servo motor to drive the lead screw to rotate, thereby enabling the left and right moving components mounted on the linear guide rail to move up and down; the left and right moving components (502) are equipped with a servo motor to drive the lead screw to rotate, thereby enabling the cutting components mounted on the linear guide rail to move left and right; the cutting components (503) are equipped with a rotary motor to drive the diamond cutting disc to rotate at high speed.

[0082] The vertical linear module (501) is synchronized with the speed of the traction unit (4) during cutting. The cutting component (503) is quickly pushed to the left by the left and right moving component (502) to complete the cutting of the cylindrical mirror.

[0083] Furthermore, the cylindrical mirror rod (105) used in the rod feeding unit (1) has a cross-sectional dimension of 24mm*12mm and a material softening point of 692℃. The heating unit (2) has a temperature range of 100-1000℃.

[0084] The working principle of this utility model:

[0085] This utility model is a cylindrical mirror drawing device. The front of the vertical tower (6) is equipped with the following components in sequence: rod feeding unit (1), heating unit (2), diameter measuring unit (3), traction unit (4), and cutting unit (5). The side of the vertical tower (6) is equipped with the following components: gas control unit (7) and electrical control unit (8). The main control station (9) is placed next to the vertical tower (6) to perform continuous processes such as rod feeding, heating, stretching, and cutting of the cylindrical mirror master rod.

[0086] A method for drawing cylindrical mirrors using a drawing device, comprising the following steps:

[0087] 1. Preparation stage

[0088] Ensure that all mechanical transmissions, electrical controls, and auxiliary facilities are in good working order;

[0089] Select a cylindrical mirror mother rod that meets the requirements, install it on the connecting tail shank, and then insert it into the rod feeding unit (1).

[0090] 2. Passing the bat

[0091] The cylindrical mirror master rod with a cross section of 12mm*24mm is smoothly transported to the heating zone of the heating device (202) through the preheating pipe (204) via the rod feeding unit (1).

[0092] 3. Heating

[0093] The heating unit (2) is electrically heated by the heating device (202) to slowly raise the heating zone of the heating unit (2) to 820℃-840℃, reducing the stress caused by excessive temperature difference, and locally heating the mother rod to soften it but not melt it.

[0094] 4. Stretching

[0095] When the mother rod is heated to 820℃-840℃ in the heating zone of the heating device (202), the tail end of the mother rod will fall off the material head due to gravity. After the material head is cut off, the traction unit (4) will start to stretch it under constant tension. At this time, the rod feeding unit (1) will steadily send the cylindrical mirror mother rod to the high temperature zone at a speed of 2mm-20mm / min. The temperature of the heating zone is 820℃-840℃. The traction unit (4) stretches downward at 72mm-720mm / min. The product size is fed back by the dual-dimensional diameter measuring instrument (302) on the diameter measuring unit (3). The rod feeding speed, heating temperature and traction speed are finely adjusted to obtain a 2mm*4mm cylindrical mirror product.

[0096] 5. cut off

[0097] The length of the formed cylindrical mirror is calculated based on the traction speed and the diameter of the traction wheel. Once the predetermined length of 200mm or 300mm is reached, a cutting action is immediately triggered. The cutting unit (5) synchronizes its speed with the speed of the drawn product through the upper and lower linear modules (501), and the diamond cutting blade driven by the servo motor quickly and accurately cuts the cylindrical mirror. The cutting position should be as perpendicular as possible to the axis of the cylindrical mirror to ensure a flat end face. The predetermined length of the cylindrical mirror is 200mm or 300mm, etc.

[0098] 6. Collection and Testing

[0099] The cut cylindrical mirror is sent to a designated area for storage; the cut cylindrical mirror is cooled at room temperature.

[0100] Perform necessary quality inspections on the finished products, such as visual inspection and dimensional measurement, to ensure that they meet customer requirements.

[0101] Advantages of this utility model:

[0102] This utility model discloses a brand-new cylindrical mirror drawing equipment. By optimizing process parameters such as heating, stretching, and cooling, it achieves efficient and continuous production of cylindrical mirrors, featuring high production efficiency, low cost, and good dimensional consistency.

[0103] The above embodiments are merely illustrative of the basic principles, main features, and advantages of this utility model. Their purpose is to enable those skilled in the art to understand and implement the content of this utility model, and they are not intended to limit the scope of protection of this utility model. Various changes and modifications can be made to possible embodiments of this utility model without departing from its principles and scope, and all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A cylindrical lens drawing apparatus characterized by comprising: It comprises a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), a cutting unit (5), a vertical tower (6), a gas control unit (7), an electrical control unit (8) and a master control operation station (9); The vertical tower (6) is provided with the rod feeding unit (1), the heating unit (2), the diameter measuring unit (3), the traction unit (4) and the cutting unit (5) from top to bottom on the front face, and is provided with the gas control unit (7) and the electrical control unit (8) on the side face; and the master control operation station (9) is placed beside the vertical tower (6); The rod feeding unit (1) comprises a linear module (101), a center position XYR fine adjustment device (102), a tension detection device (103), a preform rod tail handle (104), a cylindrical lens mother rod (105) and a rod feeding operation station (106). The heating unit (2) comprises a heating unit support (201), a heating device (202), an upper chimney (203) and a preheating pipe (204). The diameter measuring unit (3) comprises a diameter measuring instrument support (301) and a double-dimensional diameter measuring instrument (302). The traction unit (4) comprises a limiting stop lever (401), a traction support (402), a large-mouth mechanical clamp (403), a driving synchronous pulley (404), a driven synchronous pulley (405), a synchronous belt (406), a synchronous belt stop block (407), a micrometer (408) and a synchronous belt transmission motor (409). The cutting unit (5) comprises an up-and-down linear module (501), a left-and-right moving assembly (502) and a cutting assembly (503).

2. The cylindrical lens drawing device according to claim 1, wherein the rod feeding unit (1) is provided with the linear module (101) fixed on the upper section of the vertical tower (6), the center position XYR fine adjustment device (102), the tension detection device (103) and the preform rod tail handle (104) installed on the L-shaped installation support above the linear module (101), the cylindrical lens mother rod (105) clamped on the preform rod tail handle (104), and the rod feeding operation station (106) placed on the right side of the tower for controlling the start, stop, speed-up, speed-down and emergency stop of the whole rod feeding.

3. The cylindrical lens drawing device according to claim 1, wherein the heating unit (2) is provided with the heating unit support (201) fixed on the middle section of the vertical tower (6), the heating device (202) installed on the heating unit support (201), and the upper chimney (203) and the preheating pipe (204) installed above the heating device (202) for heat preservation and preheating of the preform rod on the upper part of the heating device (202).

4. The cylindrical lens drawing device according to claim 1, wherein the diameter measuring unit (3) is provided with the diameter measuring instrument support (301) fixed on the middle section of the vertical tower (6) and placed below the heating unit (2), and the double-dimensional diameter measuring instrument (302) installed on the diameter measuring instrument support (301) and inclined by 45° for detecting the length and width of the cylindrical lens. ​ ​ ​ 5. The cylindrical lens drawing equipment according to claim 1, characterized in that: In the traction unit (4), the limiting stopper (401) is fixed in the middle section of the vertical tower (6) and is arranged below the diameter measuring unit (3) to limit the straightening of the finished product; the traction support (402) is fixedly installed at the lower part of the middle section of the vertical tower (6); the synchronous belt transmission motor (409), the driving synchronous pulley (404), the driven synchronous pulley (405) and the synchronous belt stopper (407) are all installed on the traction support (402); the synchronous belt (406) is installed on the driving synchronous pulley (404) and the driven synchronous pulley (405); the large mechanical clamp (403) is installed on the synchronous belt (406) and moves up and down along with the synchronous belt (406) to pull and draw the cylindrical lens rod; The synchronous belt transmission motor (409) drives the two sets of synchronous belts (406) to move up and down through the two sets of driving synchronous pulleys (404) and the two sets of driven synchronous pulleys (405), and the large mechanical clamp (403) clamps and pulls the cylindrical lens rod; The large mechanical clamp (403) is controlled by one-way compressed air in the gas control unit (7), the input pressure is controlled by the pressure regulating filter, the compressed air mist is filtered, the opening and closing of the large mechanical clamp (403) is controlled by the two-position five-way electromagnetic valve, and the clamping force is controlled by the precision pressure reducing valve.

6. The cylindrical lens drawing equipment according to claim 1, characterized in that: In the cutting unit (5), the up-down linear module (501) is fixed below the vertical tower (6), the left-right moving assembly (502) is installed on the up-down linear module (501), and the cutting assembly (503) is installed on the left-right moving assembly (502); The up-down linear module (501) is provided with a servo motor driven screw rod to rotate, so that the left-right moving assembly installed on the linear guide realizes up-down movement; the left-right moving assembly (502) is provided with a servo motor driven screw rod to rotate, so that the cutting assembly installed on the linear guide realizes left-right movement; the cutting assembly (503) is provided with a rotary motor driven diamond cutting piece to rotate at high speed; The up-down linear module (501) is synchronized in speed with the traction unit (4) during cutting, the cutting assembly (503) is quickly pushed to the left by the left-right moving assembly (502), and the cutting of the cylindrical lens is completed.

7. A cylindrical lens drawing apparatus according to claim 1, wherein The vertical tower (6) includes three sections of upper, middle and lower towers, and the lower tower is installed on the large base plate and fixed to the ground by expansion bolts to ensure the stability of the equipment.

8. A cylindrical lens drawing apparatus according to claim 1, wherein The gas control unit (7) includes two paths of argon and compressed air, the argon is used to form a positive pressure in the furnace to isolate the external air from entering the inside of the heating device (202), and the other path of compressed air is used to control the opening and closing of the large mechanical clamp (403) in the traction unit (4) to clamp the product.

9. The cylindrical lens drawing apparatus according to claim 1, wherein The master control station (9) is provided with a touch screen of a graphical user interface for displaying all key process parameters, including running speed, tension value, equipment power and product size; provided with control buttons, including traction closing, traction opening, traction speed up, traction speed down, product cutting, fault reset, equipment emergency stop; provided with a communication module, which can communicate with each part of the cylindrical mirror drawing equipment, collect sensor data and send control instructions; provided with data recording and analysis tools, an internal data recording system that can save long-term historical data for subsequent analysis and quality traceability.

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