Cylindrical mirror drawing equipment and drawing method thereof

Abstract

The invention discloses cylindrical mirror drawing equipment and a drawing method thereof, and relates to a manufacturing technology of optical glass products, in particular to drawing equipment for continuously producing high-precision cylindrical mirrors and a drawing method thereof. 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 the technological parameters of heating, stretching, cooling and the like, efficient and continuous production of the cylindrical mirror is achieved, and the method has the advantages of being high in production efficiency, low in cost and good in size consistency.

Description

Technical Field

[0001] The invention discloses a cylindrical mirror drawing device and a drawing method thereof, which relate to the manufacturing technology of optical glass products, and in particular to a cylindrical mirror drawing device and a drawing method thereof for continuous production of high-precision cylindrical mirrors. Background Art

[0002] Cylindrical mirrors are widely used in laser systems, imaging systems, optical instruments and other fields due to their unique optical properties. Cylindrical mirrors are usually manufactured using drawing technology, but the existing manufacturing methods have certain limitations in improving the dimensional accuracy, straightness and optical performance of cylindrical mirrors. In order to meet the requirements of modern optical systems for higher precision and higher quality of cylindrical mirrors, it is necessary to develop a drawing device and method that can continuously produce high-quality cylindrical mirrors.

[0003] The traditional cylindrical mirror manufacturing method has the following main problems: 1. Poor dimensional consistency: Due to the difficulty in accurately controlling factors such as the stretching speed and temperature during a single drawing process, the consistency of the cylindrical mirror size is not high.

[0004] 2. Insufficient straightness: During the drawing process, due to uneven heating, inconsistent cooling speed and other reasons, the cylindrical mirror is prone to bending, affecting the straightness.

[0005] 3. Low production efficiency: The traditional drawing method is usually intermittent production, which can only produce one cylindrical mirror at a time, and the production efficiency is low.

[0006] 4. High cost: Since the cost of a single drawing is high and it takes many repeated drawing cycles to get a qualified product, the overall cost increases.

[0007] In order to solve the above problems, the present invention proposes a cylindrical mirror drawing device and a method thereof, which realizes the efficient and continuous production of cylindrical mirrors by optimizing the process parameters such as heating, stretching and cooling. It has the characteristics of high production efficiency, low cost, good dimensional consistency and high straightness. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a cylindrical mirror drawing device and a drawing method thereof in view of the defects existing in the prior art such as poor dimensional consistency, insufficient straightness, low production efficiency and high cost. The present invention is a cylindrical mirror drawing device and a drawing method thereof for continuously producing high-precision cylindrical mirrors, so as to achieve the goal of continuously producing high-precision cylindrical mirrors.

[0009] The technical solution adopted by the present invention to solve the above problems is: A cylindrical mirror drawing device 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 main control operation station (9).

[0010] The front of 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. The side of the vertical tower (6) is equipped with a gas control unit (7) and an electrical control unit (8). A main control operation station (9) is placed next to the vertical tower (6).

[0011] The rod feeding unit (1) comprises a linear module (101), a center position XYR fine adjustment device (102), a tension detector (103), a preform rod tail handle (104), a cylindrical mirror mother rod (105) and a rod feeding operation station (106).

[0012] The heating unit (2) comprises a heating unit support (201), a heating device (202), an upper chimney (203) and a preheating pipe (204).

[0013] The caliper measuring unit (3) comprises a caliper support (301) and a two-dimensional caliper (302).

[0014] The traction unit (4) comprises a limit stop rod (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 stopper (407), a micrometer (knob) (408) and a synchronous belt drive motor (409).

[0015] The cutting unit (5) comprises an upper and lower linear module (501), a left and right moving component (502) and a cutting component (503).

[0016] The cylindrical mirror mother rod (105) used by the rod feeding unit (1) has a cross-sectional size of 24mm*12mm, and a material softening point of 692°C. The temperature range of the heating unit (2) is 100-1000°C.

[0017] According to the above technical solution, the cylindrical mirror drawing equipment is provided with the following components from top to bottom on the front of a 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 the following components: a gas control unit (7), an electrical control unit (8); and a main control operation station (9) is placed next to the vertical tower (6).

[0018] 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 detection device (103), a preform rod tail handle (104), a cylindrical mirror mother rod (105) and a rod feeding operation station (106). The linear module (101) is fixed to 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) are installed on the L-shaped mounting bracket above the linear module (101), the cylindrical mirror mother rod (105) is clamped on the preform rod tail handle (104), and the rod feeding operation station (106) is placed on the right side of the tower, and is used to control the entire rod feeding start, stop, speed increase, speed decrease, emergency stop, etc.

[0019] According to the above technical solution, the heating unit (2) comprises a heating unit support (201), a heating device (202), an upper chimney (203) and a preheating tube (204). The heating unit support (201) is fixed to a 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 tube (204) are respectively installed above the heating device (202) to keep the upper part of the heating device (202) warm and preheat the preform.

[0020] The temperature of the heating device (202) is set to 820°C-840°C. The temperature of the preheating tube (204) is set to 600°C-690°C.

[0021] According to the above technical solution, the diameter measuring unit (3) comprises a diameter measuring instrument bracket (301) and a two-dimensional diameter measuring instrument (302). The diameter measuring instrument bracket (301) is fixed to the middle section of the vertical tower (6) and is placed below the heating unit (2). The two-dimensional diameter measuring instrument (302) is installed on the diameter measuring instrument bracket (301) and is installed at an angle of 45° to detect the length and width of the cylindrical mirror.

[0022] According to the above technical solution, the traction unit (4) includes a limit stop rod (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 stopper (407), a micrometer (knob) (408) and a synchronous belt drive motor (409).

[0023] The limit stopper (401) is fixed to the middle section of the vertical tower (6) and is placed below the diameter measuring unit (3) to limit the position of the straightened finished product. The traction bracket (402) is fixedly installed at the lower part of the middle section of the vertical tower (6). The synchronous belt drive motor (409), the active synchronous belt pulley (404), the driven synchronous belt pulley (405), and the synchronous belt stopper (407) are all installed on the traction bracket (402). The synchronous belt (406) is installed on the active synchronous belt pulley (404) and the driven synchronous belt 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 pull the cylindrical mirror rod.

[0024] The synchronous belt drive motor (409) drives two sets of synchronous belts (406) to move up and down through two sets of active synchronous belt pulleys (404) and driven synchronous belt pulleys (405), and clamps, pulls and pulls the cylindrical mirror rod through the large-mouth mechanical clamp (403).

[0025] The large-mouth mechanical clamp (403) uses a compressed air channel in the gas control unit (7), and controls the input pressure and filtered compressed air mist through a pressure regulating filter, a two-position five-way solenoid valve to control the opening and closing of the large-mouth mechanical clamp (403), and a precision pressure reducing valve to control the clamping force.

[0026] According to the above technical solution, the cutting unit (5) includes an upper and lower linear module (501), a left and right moving assembly (502) and a cutting assembly (503). The upper and lower linear module (501) is fixed to the lower section of the vertical tower (6), the left and right moving assembly (502) is installed on the upper and lower linear module (501), and the cutting assembly (503) is installed on the left and right moving assembly (502).

[0027] According to the above technical solution, the cylindrical mirror drawing equipment is characterized in that the vertical tower (6) includes three sections of towers, namely, upper, middle and lower sections, and the lower tower is installed on a large base plate and fixed to the ground by expansion bolts to ensure the stability of the equipment.

[0028] According to the above technical solution, the cylindrical mirror drawing equipment is characterized in that the gas control unit (7) includes two gas paths, argon gas and compressed air, respectively. The argon gas is used to form a positive pressure inside the furnace to prevent external air from entering the heating device (202). The other compressed air path is used to control the opening and closing of the large-mouthed mechanical clamp (403) in the traction unit (4) to clamp the product.

[0029] 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 devices such as electrical control switches, AC contactors, relays, PLC programmable controllers, displays, servo motor controllers, etc.

[0030] According to the above technical solution, the cylindrical mirror drawing equipment is characterized in that the main control operation station (9) is provided with a touch screen with a graphical user interface for displaying all key process parameters, including operating speed, tension value, equipment power and product size; control buttons are provided, including traction closing, traction opening, traction speed increase, traction speed reduction, product cutting, fault reset, and equipment emergency stop; a communication module is provided, which can communicate with various parts of the cylindrical mirror drawing equipment, collect sensor data and send control instructions; a data recording and analysis tool is provided, and a built-in data recording system can save long-term historical data to facilitate subsequent analysis and quality traceability.

[0031] A method for drawing a cylindrical mirror drawing device, the steps of which are as follows: 1. Preparation Ensure that all mechanical transmission, electrical control and auxiliary facilities are in good condition; Select a cylindrical mirror mother rod that meets the requirements, install it on the connecting tail handle, and then install it into the rod feeding unit (1); 2. Send the rod The rod feeding unit (1) smoothly transports the cylindrical mirror mother rod with a cross section of 12 mm*24 mm through the preheating tube (204) to the heating zone of the heating device (202); 3. Heating The heating device (202) electrically heats the heating zone of the heating unit (2) to slowly rise to 820° C.-840° C., thereby reducing stress caused by excessive temperature difference and locally heating the mother rod to soften it but not melt it; 4. Stretch When the mother rod is heated to a temperature of 820°C-840°C in the heating zone of the heating device (202), the tail end of the mother rod will drop off due to gravity, and the head will be cut off and the traction unit (4) will start to stretch it with 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°C-840°C. The traction unit (4) stretches it downward at 72mm-720mm / min. The product size is fed back by the two-dimensional diameter measuring instrument (302) on the diameter measuring unit (3), and the rod feeding speed, heating temperature and traction speed are fine-tuned to obtain a molded cylindrical mirror product with a cross section of 2mm*4mm. 5. cut off The length of the formed cylindrical mirror is calculated by the traction speed and the diameter of the traction wheel. Once the predetermined length of 200 mm or 300 mm is reached, the cutting action is immediately triggered. The cutting unit (5) synchronizes the speed of the upper and lower linear modules (501) with the speed of the drawn product, and the servo motor drives the diamond cutting blade to quickly and accurately cut the cylindrical mirror. The cutting position should be as perpendicular to the axis of the cylindrical mirror as possible to ensure that the end surface is flat. The predetermined length of the cylindrical mirror is 200 mm, 300 mm, etc. 6. Collection and testing The cut cylindrical mirror is sent to the designated area for storage; the cut cylindrical mirror is cooled at room temperature; Carry out necessary quality inspections such as appearance inspection and dimension measurement on finished products to ensure that they meet customer requirements.

[0032] The present invention discloses a cylindrical mirror drawing device and a method thereof, which are reasonably designed and are provided 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 operation station (9). The device is reasonably designed and can realize efficient and continuous production of cylindrical mirrors, with high production efficiency and good product quality.

[0033] The present invention discloses a drawing method for a cylindrical mirror drawing device. By adopting a continuous drawing process, the entire process from rod feeding to cutting can be carried out continuously, which greatly shortens the production cycle, significantly improves the production efficiency and product quality of the cylindrical mirror, and reduces the production cost. In particular, by accurately controlling key parameters such as rod feeding speed, heating temperature, stretching speed and tension, efficient and continuous production of the cylindrical mirror is achieved, and the method has the characteristics of high production efficiency, low cost, good dimensional consistency and high straightness.

[0034] The cylindrical mirror drawing equipment of the present invention adopts efficient induction heating, which can heat the material to the required temperature in a short time, and does not generate cooling medium and exhaust gas, thereby reducing energy waste and environmental pollution. The equipped main control operation station can not only control various parts, but also has a built-in data recording system, and all process parameters are recorded in detail, which is convenient for later quality tracing and problem analysis. The equipment has a high degree of automation, reduces labor costs, and alleviates the labor intensity of workers.

[0035] In summary, the cylindrical mirror drawing equipment and its drawing method not only achieve efficient and precise manufacturing at the technical level, but also show obvious 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a right view of the cylindrical mirror drawing equipment scheme in an embodiment of the present invention; Figure 2 It is a front view of the cylindrical mirror drawing equipment scheme in an embodiment of the present invention; Figure 3 A partial schematic diagram of the components of a traction unit (4) of a cylindrical mirror drawing device; Figure 4 A schematic diagram of a cutting unit (5) of a cylindrical mirror drawing device; Figure 5 A schematic diagram of a left-right moving assembly (502) of a cutting unit (5) of a cylindrical mirror drawing device; Figure 6 A schematic diagram of a cutting assembly (503) of a cutting unit (5) of a cylindrical mirror drawing apparatus.

[0037] In the above drawings, 1. rod feeding unit, 101. linear module, 102. center position XYR fine adjustment device, 103. tension detector, 104. preform tail handle, 105. cylindrical mirror mother rod, 106. rod feeding operation station, 2. heating unit, 201. heating unit bracket, 202. heating device, 203. upper chimney, 204. preheating tube, 3. diameter measuring unit, 301. diameter measuring instrument bracket, 302. two-dimensional diameter measuring instrument, 4. traction unit, 401. Limit stop rod, 402, traction bracket, 403, large-mouth mechanical pliers, 404, active synchronous pulley, 405, driven synchronous pulley, 406, synchronous belt, 407, synchronous belt stopper, 408, micrometer (knob), 409, synchronous belt drive motor; 5, cutting unit, 501, upper and lower linear modules, 502, left and right moving components, 503, cutting group, 6, vertical tower, 7, gas control unit, 8, electrical control unit, 9, main control operation station. DETAILED DESCRIPTION

[0038] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0039] Reference Figure 1-Figure 6 A cylindrical mirror drawing device 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 main control operation station (9).

[0040] The front of 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. The side of the vertical tower (6) is equipped with a gas control unit (7) and an electrical control unit (8). A main control operation station (9) is placed next to the vertical tower (6).

[0041] The rod feeding unit (1) comprises a linear module (101), a center position XYR fine adjustment device (102), a tension detector (103), a preform rod tail handle (104), a cylindrical mirror mother rod (105) and a rod feeding operation station (106).

[0042] The heating unit (2) comprises a heating unit support (201), a heating device (202), an upper chimney (203), and a preheating tube (204).

[0043] The caliper measuring unit (3) comprises a caliper support (301) and a two-dimensional caliper (302).

[0044] The traction unit (4) comprises a limit stop rod (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 stopper (407), a micrometer (knob) (408) and a synchronous belt drive motor (409).

[0045] The cutting unit (5) comprises an upper and lower linear module (501), a left and right moving component (502), and a cutting component (503).

[0046] The cylindrical mirror mother rod (105) used by the rod feeding unit (1) has a cross-sectional size of 24mm*12mm, and a material softening point of 692°C. The temperature range of the heating unit (2) is 100-1000°C.

[0047] Furthermore, the cylindrical mirror drawing equipment is provided with: a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), and a cutting unit (5) in sequence on the front of a vertical tower (6); a gas control unit (7) and an electrical control unit (8) are provided on the side of the vertical tower (6); and a main control operation station (9) is placed next to the vertical tower (6).

[0048] Furthermore, the rod feeding unit (1) comprises a linear module (101), a center position XYR fine adjustment device (102), a tension detector (103), a preform rod tail handle (104), a cylindrical mirror mother rod (105) and a rod feeding operation station (106). The linear module (101) is fixed to the upper section of the vertical tower (6), the center position XYR fine adjustment device (102), the tension detector (103) and the preform rod tail handle (104) are installed on an L-shaped mounting bracket above the linear module (101), the cylindrical mirror mother rod (105) is clamped on the preform rod tail handle (104), and 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. The center position XYR fine adjustment device (102) is provided with a center position XYR fine adjustment device (102) which adopts a commercially available XYR axis three-axis displacement platform to precisely move and fine-tune an optical slide table and a rotating table.

[0049] The linear module (101) is driven by a servo motor to move the ball screw slide up and down along the linear guide rail, and the optical fiber position of the cylindrical mirror mother rod (105) is accurately adjusted according to the center position XYR fine-tuning device (102) to ensure that the cylindrical mirror mother rod (105) is centered. The center position XYR fine-tuning device (102) uses an XY displacement stage to control the fine-tuning of the cylindrical mirror mother rod within ±10mm in the front and back and left and right directions, and a precision rotating platform is installed on the XY displacement stage to control the rotation angle of the cylindrical mirror mother rod along the Z axis.

[0050] Furthermore, in the heating unit (2), the heating unit bracket (201) is fixed to a 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 the preheating pipe (204) are respectively installed above the heating device (202) to be used for the upper part of the heating device (202) to keep warm and preheat the preform rods.

[0051] The heating part of the heating device (202) adopts HRE heating wire and silicon carbide ceramic skeleton, the middle part adopts 1400 ceramic fiber board and nano insulation board for insulation, and two sets of K-type temperature measuring thermocouples are arranged symmetrically, one is used for feedback temperature control, and the other is only for display.

[0052] The temperature of the heating device (202) is set to 820°C-840°C. The temperature of the preheating tube (204) is set to 600°C-690°C.

[0053] Furthermore, in the diameter measuring unit (3), the diameter measuring instrument bracket (301) is fixed to the middle section of the vertical tower (6) and is placed below the heating unit (2). The two-dimensional diameter measuring instrument (302) is installed on the diameter measuring instrument bracket (301) and is installed at an angle of 45° to detect the length and width of the cylindrical mirror.

[0054] The two-dimensional diameter measuring instrument (302) has a measuring range of 0.1 mm-25 mm and an accuracy of ±1 μm ±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 pulling speed of the pulling unit (4) in real time through feedback so that the size of the straightened product meets the requirements.

[0055] Furthermore, in the traction unit (4), the limit stopper (401) is fixed to the middle section of the vertical tower (6), and is placed below the diameter measuring unit (3) to limit the position of the straightened finished product. The traction bracket (402) is fixedly installed at the lower part of the middle section of the vertical tower (6), the synchronous belt drive motor (409), the active synchronous belt pulley (404), the driven synchronous belt pulley (405), and the synchronous belt stopper (407) are all installed on the traction bracket (402), the synchronous belt (406) is installed on the active synchronous belt pulley (404) and the driven synchronous belt pulley (405), and the large-mouth mechanical clamp (403) is installed on the synchronous belt (406), and the large-mouth mechanical clamp (403) moves up and down with the synchronous belt (406) to pull and pull the cylindrical mirror rod.

[0056] The synchronous belt drive motor (409) drives two sets of synchronous belts (406) to move up and down through two sets of active synchronous belt pulleys (404) and driven synchronous belt pulleys (405), and clamps, pulls and pulls the cylindrical mirror rod through the large-mouth mechanical clamp (403).

[0057] The large-mouth mechanical clamp (403) uses a compressed air channel in the gas control unit (7), and controls the input pressure and filtered compressed air mist through a pressure regulating filter, a two-position five-way solenoid valve to control the opening and closing of the large-mouth mechanical clamp (403), and a precision pressure reducing valve to control the clamping force.

[0058] The limit stopper (401) is composed of two parallel rollers installed on the same rotating shaft. The rotating shaft rotation force is adjusted by a locking nut and a butterfly washer. The two parallel rollers are manually rotated to make their openings appropriate, so that the forward and backward movement of the cylindrical mirror is limited.

[0059] Furthermore, the cutting unit (5) includes an upper and lower linear module (501), a left and right moving assembly (502), and a cutting assembly (503). The upper and lower linear module (501) is fixed to the lower section of the vertical tower (6), the left and right moving assembly (502) is installed on the upper and lower linear module (501), and the cutting assembly (503) is installed on the left and right moving assembly (502).

[0060] The upper and lower linear modules (501) are provided with a servo motor to drive the screw to rotate, so that the left and right moving components installed on the linear guide rails can move up and down; the left and right moving components (502) are provided with a servo motor to drive the screw to rotate, so that the cutting components installed on the linear guide rails can move left and right; the cutting components (503) are provided with a rotary motor to drive the diamond cutting blade to rotate at high speed.

[0061] The speed of the upper and lower linear modules (501) is synchronized with the speed of the traction unit (4) during cutting, and the cutting component (503) is quickly pushed leftward by the left and right moving component (502), thereby completing the cutting of the cylindrical mirror.

[0062] Furthermore, the cross-sectional size of the cylindrical mirror mother rod (105) used by the rod feeding unit (1) is 24mm*12mm, and the material softening point is 692°C. The temperature range of the heating unit (2) is 100-1000°C.

[0063] Working principle of the present invention: The present invention relates to a cylindrical mirror drawing device. A vertical tower (6) is provided with a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), and a cutting unit (5) in sequence on the front side thereof. A gas control unit (7) and an electrical control unit (8) are provided on the side of the vertical tower (6). A main control operation station (9) is placed next to the vertical tower (6) to perform continuous process such as rod feeding, heating, drawing, and cutting on a cylindrical mirror mother rod.

[0064] A method for drawing a cylindrical mirror drawing device, the steps of which are as follows: 1. Preparation Ensure that all mechanical transmission, electrical control and auxiliary facilities are in good condition; Select a cylindrical mirror mother rod that meets the requirements, install it on the connecting tail handle, and then install it into the rod feeding unit (1); 2. Send the rod The rod feeding unit (1) smoothly transports the cylindrical mirror mother rod with a cross section of 12 mm*24 mm through the preheating tube (204) to the heating zone of the heating device (202); 3. Heating The heating device (202) electrically heats the heating zone of the heating unit (2) to slowly rise to 820° C.-840° C., thereby reducing stress caused by excessive temperature difference and locally heating the mother rod to soften it but not melt it; 4. Stretch When the mother rod is heated to a temperature of 820°C-840°C in the heating zone of the heating device (202), the tail end of the mother rod will drop off due to gravity. After the head is cut off, the traction unit (4) begins to stretch the mother rod with constant tension. At this time, the rod feeding unit (1) will steadily feed 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°C-840°C. The traction unit (4) stretches it downward at 72mm-720mm / min. The product size is fed back by the two-dimensional diameter measuring instrument (302) on the diameter measuring unit (3), and the rod feeding speed, heating temperature and traction speed are fine-tuned to obtain a cylindrical mirror product with a cross section of 2mm*4mm. 5. cut off The length of the formed cylindrical mirror is calculated by the traction speed and the diameter of the traction wheel. Once the predetermined length of 200mm or 300mm is reached, the cutting action is immediately triggered. The cutting unit (5) synchronizes the speed of the upper and lower linear modules (501) with the speed of the drawn product, and the servo motor drives the diamond cutting blade to quickly and accurately cut the cylindrical mirror. The cutting position should be as perpendicular to the axis of the cylindrical mirror as possible to ensure that the end surface is flat. The predetermined length of the cylindrical mirror is 200mm, 300mm, etc. 6. Collection and testing The cut cylindrical mirror is sent to the designated area for storage; the cut cylindrical mirror is cooled at room temperature; Carry out necessary quality inspections such as appearance inspection and dimension measurement on finished products to ensure that they meet customer requirements.

[0065] Advantages of the present invention: The present invention discloses a new cylindrical mirror drawing device and method thereof, which realizes efficient and continuous production of cylindrical mirrors by optimizing process parameters such as heating, stretching and cooling, and has the characteristics of high production efficiency, low cost and good dimensional consistency.

[0066] The above embodiments are only for describing the basic principles, main features and advantages of the present invention. The purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and it cannot limit the protection scope of the present invention in turn. Without departing from the principle and scope of the present invention, the possible embodiments of the present invention may have various changes and improvements, and these changes and improvements all fall within the protection scope of the present invention.

Claims

1. A cylindrical mirror drawing device, characterized in that: 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 main control operation station (9); The front of the vertical tower (6) is provided with a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4) and a cutting unit (5) in order from top to bottom. The side of the vertical tower (6) is provided with a gas control unit (7) and an electrical control unit (8). A main control operation station (9) is placed next to the vertical tower (6); The rod feeding unit (1) comprises a linear module (101), a center position XYR fine adjustment device (102), a tension detector (103), a preform tail handle (104), a cylindrical mirror 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 an annealing tube (204); The caliper measuring unit (3) comprises a caliper bracket (301) and a two-dimensional caliper (302); The traction unit (4) comprises a limit stop rod (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 stopper (407), a micrometer (408) and a synchronous belt drive motor (409); The cutting unit (5) comprises an upper and lower linear module (501), a left and right moving component (502) and a cutting component (503).

2. A cylindrical mirror drawing device according to claim 1, characterized in that: In the rod feeding unit (1), the linear module (101) is fixed to the upper section of the vertical tower (6), the center position XYR fine adjustment device (102), the tension detection (103), and the preform rod tail handle (104) are installed on the L-shaped mounting bracket above the linear module (101), the cylindrical mirror mother rod (105) is clamped on the preform rod tail handle (104), and the rod feeding operation station (106) is placed on the right side of the tower to control the start, stop, speed increase, speed decrease and emergency stop of the entire rod feeding.

3. The cylindrical mirror drawing device according to claim 1, characterized in that: In the heating unit (2), the heating unit bracket (201) is fixed to 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 the preheating pipe (204) are respectively installed above the heating device (202) to keep the upper part of the heating device (202) warm and preheat the preform rod.

4. The cylindrical mirror drawing device according to claim 1, characterized in that: In the diameter measuring unit (3), the diameter measuring instrument bracket (301) is fixed to the middle section of the vertical tower (6) and is placed below the heating unit (2). The two-dimensional diameter measuring instrument (302) is installed on the diameter measuring instrument bracket (301) and is installed at an angle of 45 degrees to detect the length and width of the cylindrical mirror.

5. The cylindrical mirror drawing device according to claim 1, characterized in that: In the traction unit (4), a limit stop rod (401) is fixed to a middle section of the vertical tower (6) and is placed below the diameter measuring unit (3) to limit the position of the straightened finished product; a traction bracket (402) is fixedly installed at the lower part of the middle section of the vertical tower (6); a synchronous belt drive motor (409), an active synchronous belt pulley (404), a driven synchronous belt pulley (405), and a synchronous belt stopper (407) are all installed on the traction bracket (402); a synchronous belt (406) is installed on the active synchronous belt pulley (404) and the driven synchronous belt pulley (405); a large-mouth mechanical clamp (403) is installed on the synchronous belt (406); and the large-mouth mechanical clamp (403) moves up and down with the synchronous belt (406) to pull and pull the cylindrical mirror rod; The synchronous belt drive motor (409) drives two sets of synchronous belts (406) to move up and down through two sets of active synchronous belt pulleys (404) and driven synchronous belt pulleys (405), and clamps, pulls and pulls the cylindrical mirror rod through the large-mouth mechanical clamp (403); The large-mouth mechanical clamp (403) uses a compressed air channel in the gas control unit (7), and controls the input pressure and filtered compressed air mist through a pressure regulating filter, a two-position five-way solenoid valve to control the opening and closing of the large-mouth mechanical clamp (403), and a precision pressure reducing valve to control the clamping force.

6. The cylindrical mirror drawing device according to claim 1, characterized in that: In the cutting unit (5), the upper and lower linear modules (501) are fixed to the lower section of the vertical tower (6), the left and right moving components (502) are installed on the upper and lower linear modules (501), and the cutting components (503) are installed on the left and right moving components (502); The upper and lower linear modules (501) are provided with a servo motor to drive the screw to rotate, so that the left and right moving components installed on the linear guide rails can move up and down; the left and right moving components (502) are provided with a servo motor to drive the screw to rotate, so that the cutting components installed on the linear guide rails can move left and right; the cutting components (503) are provided with a rotary motor to drive the diamond cutting blade to rotate at high speed; The speed of the upper and lower linear modules (501) is synchronized with the speed of the traction unit (4) during cutting, and the cutting component (503) is quickly pushed leftward by the left and right moving component (502), thereby completing the cutting of the cylindrical mirror.

7. The cylindrical mirror pulling device according to claim 1, characterized in that: The vertical tower (6) comprises three sections of towers, namely, upper, middle and lower sections, and the lower section is mounted on a large base plate and fixed to the ground by expansion bolts to ensure the stability of the equipment.

8. The cylindrical mirror pulling device according to claim 1, characterized in that: The gas control unit (7) includes two gasses, argon and compressed air. The argon is used to form a positive pressure inside the furnace to prevent external air from entering the heating device (202). The other compressed air is used to control the opening and closing of the large-mouthed mechanical clamp (403) in the traction unit (4) to clamp the product.

9. The cylindrical mirror pulling device according to claim 1, characterized in that: The main control operation station (9) is provided with a touch screen with a graphical user interface for displaying all key process parameters, including operating speed, tension value, equipment power and product size; it is provided with control buttons, including traction closing, traction opening, traction speed increase, traction speed reduction, product cutting, fault reset and equipment emergency stop; it is provided with a communication module, which can communicate with various parts of the cylindrical mirror drawing equipment, collect sensor data and send control instructions; it is provided with a data recording and analysis tool, and a built-in data recording system, which can save long-term historical data for subsequent analysis and quality traceability.

10. The method for drawing a cylindrical mirror drawing device according to claim 1, characterized in that: Here are the steps: (1) Preparation stage Ensure that all mechanical transmission, electrical control and auxiliary facilities are in good condition; Select a cylindrical mirror mother rod that meets the requirements, install it on the connecting tail handle, and then install it into the rod feeding unit (1); (2) Rod feeding The rod feeding unit (1) smoothly transports the cylindrical mirror mother rod with a cross section of 12 mm*24 mm through the preheating tube (204) to the heating zone of the heating device (202); (3) Heating The heating device (202) electrically heats the heating zone of the heating unit (2) to slowly rise to 650° C.-840° C., thereby reducing stress caused by excessive temperature difference and locally heating the mother rod to soften it but not melt it; (4) Stretching When the mother rod is heated to a temperature of 820°C-840°C in the heating zone of the heating device (202), the tail end of the mother rod will drop off due to gravity. After the head is cut off, the traction unit (4) begins to stretch the mother rod with constant tension. At this time, the rod feeding unit (1) will steadily feed the cylindrical mirror mother rod to the high temperature zone at a speed of 2 mm-20 mm / min. The temperature of the high temperature heating zone is 820°C-840°C. The traction unit (4) stretches it downward at 72 mm-720 mm / min. The product size is fed back by the two-dimensional diameter measuring instrument (302) on the diameter measuring unit (3), and the rod feeding speed, heating temperature and traction speed are fine-tuned to obtain a cylindrical mirror product with a cross section of 2 mm*4 mm. (5) Cut off The length of the formed cylindrical mirror is calculated by the traction speed and the diameter of the traction wheel, and the cutting action is immediately triggered once the predetermined length is reached; the cutting unit (5) synchronizes the speed of the upper and lower linear modules (501) with the speed of the drawn product, and the servo motor drives the diamond cutting blade to quickly and accurately cut the cylindrical mirror; the cutting position should be as perpendicular to the axis of the cylindrical mirror as possible to ensure that the end surface is flat; (6) Collection and testing The cut cylindrical mirror is sent to the designated area for storage; the cut cylindrical mirror is cooled at room temperature; Carry out necessary quality inspections such as appearance inspection and dimensional measurement on finished products to ensure they meet customer requirements.

Images