Plastic plate hot press molding device and using method thereof

Abstract

The invention relates to the technical field of hot-press forming devices, in particular to a plastic plate hot-press forming device and a using method thereof.The plastic plate hot-press forming device comprises an operation table, a truss, a transferring assembly, a to-be-machined assembly, a heating assembly and a mold pressing assembly.The transferring assembly comprises a support, and the surface of the support is fixedly connected with a first electric push rod; a lifting frame is fixedly connected to the output end of the first electric push rod, a hook belt is fixedly connected to the surface of the lifting frame, the to-be-processed assembly comprises a cloth bag, the cloth bag is connected with the hook belt in a clamped mode, a thick plastic plate is slidably connected to the inner wall of the cloth bag, and the heating assembly comprises a second electric push rod. According to the thick plastic plate machining device, by arranging the transfer structure, when thick plastic plates are machined, the heated thick plastic plates can be automatically moved to the mold pressing assembly from the heating assembly, the moving speed is higher, the situation that the thick plastic plates are hardened due to the fact that the thick plastic plates are not transferred in time is avoided, and therefore the follow-up mold pressing quality and efficiency are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hot pressing forming devices, and in particular to a hot pressing forming device for a plastic plate and a use method thereof. Background Art

[0002] Thermoforming is a commonly used plastic processing technology, which is mainly used for the process of heating plastic sheets to a certain temperature and then molding them into the desired shape under pressure. When processing thick plastic sheets, the thick plastic sheets are placed in a heating device and evenly heated to their softening temperature. The softened thick plastic sheets are then placed in a molding mold and pressure is applied to mold them according to the shape of the mold. After keeping them under pressure for a period of time, the mold is removed and the finished product is allowed to cool naturally or a cooling device is used to accelerate the cooling process.

[0003] The above-mentioned and prior art technologies have the following defects: during the operation, it is necessary to manually move the heated thick plastic sheet into the mold for processing. At this time, the thick plastic sheet is easily hardened due to the long time consumed, which in turn causes cracks in the thick plastic sheet after molding, seriously reducing the quality and processing efficiency of the thick plastic sheet.

[0004] Therefore, a plastic sheet hot pressing forming device and a use method thereof are proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the disadvantage that the thick plastic sheet needs to be manually moved to a mold for processing, which is easy to harden the thick plastic sheet due to the long time consumption, and to propose a plastic sheet hot pressing molding device and its use method.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a plastic sheet hot pressing forming device and its use method, including an operating table, a truss, a transfer component, a component to be processed, a heating component and a molding component, the transfer component includes a bracket, the surface of the bracket is fixedly connected with a first electric push rod, the output end of the first electric push rod is fixedly connected with a lifting frame, the surface of the lifting frame is fixedly connected with a hook belt, the component to be processed includes a cloth bag, the cloth bag is snap-connected with the hook belt, the inner wall of the cloth bag is slidably connected with a thick plastic sheet, the heating component includes a second electric push rod, the second electric push rod is fixedly connected to the truss, the output end of the second ... output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a lifting frame, the output end of the lifting frame is fixedly connected with a The outlet end is fixedly connected with an upper heat conducting plate, an upper electric heating tube is inserted into the upper heat conducting plate, a lower heat conducting plate is fixedly connected with the surface of the operating table, a lower electric heating tube is inserted into the lower heat conducting plate, the molding assembly includes an oil press, the oil press is fixedly connected with the truss, an upper mold is fixedly connected with the output end of the oil press, an upper cooling coil is inserted into the upper mold, a lower mold is fixedly connected with the surface of the operating table, a lower cooling coil is inserted into the lower mold, the upper heating plate and the lower heating plate are both made of aluminum alloy, the material of the thick plastic sheet includes but is not limited to polycarbonate, acrylonitrile-butadiene-styrene copolymer and polymethyl methacrylate, and also includes:

[0007] A transport structure provided on the surface of the support for automatically transporting thick plastic sheets, the transport structure comprising a fixing plate fixedly mounted on the surface of the support, a gear and rack frame for driving the support to move, and a guide rod for limiting the moving path of the support;

[0008] A cleaning structure is arranged on the surface of the fixing plate and is used to clean foreign matter on the surface of the rack frame. The cleaning structure comprises a mounting plate fixedly mounted on the surface of the fixing plate and a scraper for scraping away foreign matter.

[0009] The effects achieved by the above components are: by setting up a transfer structure, when processing thick plastic plates, the heated thick plastic plates can be automatically moved from the heating component to the molding component, and the moving speed is faster, thereby avoiding the hardening of the thick plastic plates due to untimely transfer, thereby ensuring the subsequent molding quality and efficiency. By setting up a cleaning structure, during the movement of the bracket, the scraper will scrape off foreign matter attached to the tooth surface of the rack frame, thereby avoiding foreign matter attached to the tooth surface of the rack frame, affecting the normal meshing of the gear and the rack frame, thereby improving the stability of the gear during operation.

[0010] Preferably, the surface of the fixed plate is fixedly connected with a servo motor, the output end of the servo motor is fixedly connected with the gear, the operating table is fixedly connected with the rack frame, the gear and the rack frame are meshed with each other, the two ends of the guide rod are fixedly connected to the operating table, the guide rod passes through the bracket, the surface of the fixed plate is fixedly connected with the limit plate, the two ends of the limit plate are rotatably connected with a roller, the surface of the operating table is fixedly connected with a bending plate, the bending plate is slidably penetrated by a sliding rod, one end of the sliding rod is fixedly connected with a strip plate, the surface of the strip plate is fixedly connected with a fixed block, the strip plate is slidably penetrated by a round rod, one end of the round rod is fixedly connected with a moving block, the moving block is slidably connected to the strip plate, the surfaces of the fixed block and the moving block are both provided with inclined surfaces, the surface of the strip plate is fixedly connected with an iron sheet, the surface of the bending plate is fixedly connected with an electromagnet, the surface of the strip plate is fixedly connected with a first spring, and the other end of the first spring is fixedly connected to the bending plate.

[0011] The effect achieved by the above components is: turn on the servo motor, and the rotation of the output end of the servo motor will drive the gear to rotate. At this time, the gear will move along the surface of the rack frame, and the servo motor will drive the fixed plate to move, and the fixed plate will drive the bracket to slide along the arc surface of the guide rod, thereby quickly moving the position of the thick plastic plate. In this process, the fixed plate will drive the limit plate to move, and the movement of the limit plate will drive the roller to move. When the roller contacts the inclined surface of the fixed block, the roller will squeeze the fixed block, and the fixed block will move away from the rack frame. The movement of the fixed block will drive the strip plate to move, and the strip plate will drive the sliding rod to slide along the bending plate. The sliding rod reaches the effect of limiting the moving path of the strip plate. The movement of the strip plate will compress the first spring. At this time, the first spring is in a compressed state, and then the limit plate will be out of contact with the inclined surface of the fixed block, and the fixed block will be against the surface of the limit plate, and then the limit plate The first spring starts to stretch, and the side of the moving block and the fixed block close to each other will contact the two rollers respectively, and the rollers can reduce the friction between the limit plate and the fixed block and the moving block. At this time, the cooperation between the moving block and the fixed block will limit the position of the limit plate, thereby limiting the position of the bracket, so that the thick plastic sheet can be accurately moved to the top of the lower heating plate, improving the processing accuracy. After heating, turn on the electromagnet, the electromagnet will attract the iron sheet, and the iron sheet will drive the strip plate to move, so that the fixed block and the moving block no longer limit the position of the limit plate, and then the servo motor can be controlled to continue to drive the bracket to move, thereby quickly transferring the thick plastic sheet to the molded component.

[0012] Preferably, the arc surface of the round rod is sleeved with a second spring, and two ends of the second spring are fixedly connected to the round rod and the strip plate respectively.

[0013] The effect achieved by the above components is: the round rod will stretch the second spring as it follows the movement of the moving block, and the second spring will use its own elastic force to slow down the moving speed of the moving block, thereby slowing down the sliding speed of the limit plate, making it easier to limit the position of the limit plate later.

[0014] Preferably, a stopper is fixedly connected to the surface of the strip plate, and the distance between the stopper and the fixed block is smaller than the length of the limiting plate.

[0015] The effect achieved by the above components is: since the distance between the moving block and the fixed block is smaller than the length of the limiting plate, the limiting plate will not be restricted by the moving block and the fixed block, thereby facilitating the movement and resetting of the bracket.

[0016] Preferably, a rotating block is rotatably connected inside the mounting plate, one end of the rotating block is fixedly connected to a connecting rod, a sleeve is slidably connected to the surface of the connecting rod, the sleeve is fixedly connected to the scraper, and a bolt is threadedly connected to the inner surface of the connecting rod.

[0017] The effect achieved by the above components is: during the movement of the bracket, the fixed plate will drive the installation plate to move, the movement of the installation plate will drive the rotating block to move, the movement of the rotating block will drive the connecting rod to move, the movement of the connecting rod will drive the sleeve to move, the movement of the sleeve will drive the scraper to slide along the tooth surface of the rack frame, and the scraper will scrape off foreign matter attached to the tooth surface of the rack frame.

[0018] Preferably, the arc surface of the rotating block is sleeved with a torsion spring, and two ends of the torsion spring are respectively fixedly connected to the support plate and the rotating block.

[0019] The effects achieved by the above components are: the torsion spring drives the rotating block to rotate by its own torque, the rotating block drives the connecting rod to rotate, and the sleeve rotates with the connecting rod to make the scraper abut against the tooth surface of the rack frame.

[0020] Preferably, the vertical cross-section of the scraper is arc-shaped, and the scraper is made of elastic material.

[0021] The effect achieved by the above components is that the scraper with an arc-shaped vertical cross-section will drive the foreign matter to move, and due to the obstruction of the scraper, the foreign matter will fall to both sides of the rack frame.

[0022] A method for using a plastic sheet hot pressing forming device comprises the following steps:

[0023] S1. Place the thick plastic sheet to be hot-pressed into a pre-sewn cloth bag to complete a component to be processed;

[0024] S2, using the hook belt to limit the cloth bag, and using the first electric push rod to raise the lifting frame so that the component to be processed is higher than the lower heating plate;

[0025] S3, turn on the servo motor, and transfer the component to be processed to the middle of the upper heating plate and the lower heating plate that have been pre-heated and set to a constant temperature with the help of the gear and the rack frame. The fixed block, the moving block and the limit plate can accurately limit the position of the bracket. The scraper will promptly scrape off foreign matter attached to the tooth surface of the rack frame. With the help of the first electric push rod, the lifting frame is moved down to make the cloth bag contact with the lower heating plate, and the second electric push rod is controlled to press the upper heating plate down to contact with the cloth bag;

[0026] S4. Turn on the upper electric heating tube and the lower electric heating tube according to the material characteristics of the thick plastic sheet, and heat the thick plastic sheet to a suitable temperature with the help of the upper heating plate and the lower heating plate;

[0027] S5. After heating is completed, the lifting frame is lifted again to make the component to be processed higher than the lower mold, and then the component to be processed is transferred to the upper part of the lower mold, and then the lifting frame is moved down to make the cloth bag contact with the lower mold;

[0028] S6, using a hydraulic press to press the upper mold downward to close the mold, and at the same time, coolant is introduced into the upper cooling coil and the lower cooling coil to cool the upper mold and the lower mold, thereby reducing the temperature of the thick plastic sheet to the shaping temperature;

[0029] S7, opening the mold of the molded component, and then moving the component to be processed out of the lower mold with the help of the first electric push rod;

[0030] S8, control the output end of the servo motor to rotate in the opposite direction to move the bracket to a suitable position;

[0031] S9, remove the cloth bag, and then take out the thick plastic sheet from the cloth bag to complete the hot pressing molding operation.

[0032] Preferably, the cloth bag is made of two pieces of overlapped and aligned high-temperature resistant flannel cloth, and then three positioning edges are processed by sewing technology according to the size of the thick plastic plate. The upper and lower electric heating tubes are temperature controlled by intelligent thermostats, and the models of the intelligent thermostats include but are not limited to XMTA-2201. The upper and lower molds are temperature controlled by mold temperature controllers, and the models of the mold temperature controllers include but are not limited to STM-900W.

[0033] Preferably, the step S3 is specifically:

[0034] When the material of the thick plastic sheet is polycarbonate, the heating temperature is 157-163°C;

[0035] When the material of the thick plastic sheet is acrylonitrile-butadiene-styrene copolymer, the heating temperature is 135-140° C.;

[0036] When the material of the thick plastic sheet is polymethyl methacrylate, the heating temperature is 105-110°C;

[0037] The heating conditions of the thick plastic sheet must be based on the specific molding shape of the molded component and the thickness requirements of the sheet, and the temperature must be fine-tuned and the heating time controlled.

[0038] Compared with the prior art, the advantages and positive effects of the present invention are:

[0039] 1. In the present invention, by setting a transfer structure, when processing a thick plastic sheet, the heated thick plastic sheet can be automatically moved from the heating component to the molding component, and the moving speed is faster, thereby avoiding the hardening of the thick plastic sheet due to untimely transfer, thereby ensuring the subsequent molding quality and efficiency.

[0040] 2. In the present invention, by setting a cleaning structure, during the movement of the bracket, the scraper will scrape off foreign matter attached to the tooth surface of the rack frame to prevent foreign matter from adhering to the tooth surface of the rack frame and affecting the normal meshing of the gear and the rack frame, thereby improving the stability of the gear during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 It is a structural schematic diagram of the operating platform and truss of the present invention;

[0043] Figure 3 It is a structural schematic diagram of the truss of the present invention;

[0044] Figure 4 It is a structural schematic diagram of the operating table of the present invention;

[0045] Figure 5 It is a structural schematic diagram of the bracket and the guide rod of the present invention;

[0046] Figure 6 It is a structural schematic diagram of the support of the present invention;

[0047] Figure 7 For the present invention Figure 5 The enlarged view of point A in the middle;

[0048] Figure 8 It is a structural schematic diagram of the fixing plate of the present invention;

[0049] Fig. 9 It is a schematic diagram of the structure of the bent plate of the present invention;

[0050] Fig.10 It is a schematic diagram of the structure of the bent plate of the present invention at another angle;

[0051] Fig.11 It is a schematic diagram of the split structure at the support plate of the present invention.

[0052] Legend: 1. Operating table; 2. Truss; 3. Transfer assembly; 31. Bracket; 32. First electric push rod; 33. Lifting frame; 34. Hook belt; 4. Component to be processed; 41. Cloth bag; 42. Thick plastic sheet; 5. Heating assembly; 51. Second electric push rod; 52. Upper heating plate; 53. Upper electric heating tube; 54. Lower heating plate; 55. Lower electric heating tube; 6. Molding assembly; 61. Hydraulic press; 62. Upper mold; 63. Upper cooling coil; 64. Lower mold; 65. Lower cooling coil; 7. Transfer structure; 701. Fixed plate; 702, servo motor; 703, gear; 704, rack frame; 705, guide rod; 706, limit plate; 707, bending plate; 708, slide rod; 709, strip plate; 710, fixed block; 711, round rod; 712, moving block; 713, iron sheet; 714, electromagnet; 715, first spring; 716, second spring; 717, stop block; 718, roller; 8, cleaning structure; 81, mounting plate; 82, rotating block; 83, connecting rod; 84, sleeve; 85, scraper; 86, bolt; 87, torsion spring. DETAILED DESCRIPTION

[0053] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0055] like Figure 1-Figure 11As shown, the present invention provides a plastic sheet hot pressing forming device and a method of using the same, including an operating table 1, a truss 2, a transfer component 3, a component to be processed 4, a heating component 5 and a molding component 6, the transfer component 3 includes a bracket 31, the surface of the bracket 31 is fixedly connected with a first electric push rod 32, the output end of the first electric push rod 32 is fixedly connected with a lifting frame 33, the surface of the lifting frame 33 is fixedly connected with a hook belt 34, the component to be processed 4 includes a cloth bag 41, the cloth bag 41 is engaged with the hook belt 34, the inner wall of the cloth bag 41 is slidably connected with a thick plastic sheet 42, the heating component 5 includes a second electric push rod 51, the second electric push rod 51 is fixedly connected to the truss 2, the output end of the second electric push rod 51 is fixedly connected with an upper heat conducting plate, an upper electric heating pipe 53 is inserted in the upper heat conducting plate, the surface of the operating table 1 is fixedly connected with a lower heat conducting plate, a lower electric heating pipe 55 is inserted in the lower heat conducting plate, the molding component 6 includes an oil press 61, the oil press 61 is fixedly connected to the truss 2, the oil press 61 The output end is fixedly connected to an upper mold 62, and an upper cooling coil 63 is inserted into the upper mold 62. The surface of the operating table 1 is fixedly connected to a lower mold 64, and a lower cooling coil 65 is inserted into the lower mold 64. The upper heating plate 52 and the lower heating plate 54 are both made of aluminum alloy. The material of the thick plastic sheet 42 includes but is not limited to polycarbonate, acrylonitrile-butadiene-styrene copolymer and polymethyl methacrylate. It also includes: a transport structure 7 arranged on the surface of the bracket 31 for automatically transporting the thick plastic sheet 42, the transport structure 7 includes a fixed plate 701 fixedly mounted on the surface of the bracket 31, a gear 703 and a rack frame 704 for driving the bracket 31 to move, and a guide rod 705 for limiting the moving path of the bracket 31; a cleaning structure 8 is arranged on the surface of the fixed plate 701 for cleaning foreign matter on the surface of the rack frame 704, and the cleaning structure 8 includes a mounting plate 81 fixedly mounted on the surface of the fixed plate 701 and a scraper 85 for scraping foreign matter.

[0056] The specific settings and functions of the transfer structure 7 and the cleaning structure 8 will be described in detail below.

[0057] like Figure 5-Figure 10As shown, the surface of the fixed plate 701 is fixedly connected with a servo motor 702, the output end of the servo motor 702 is fixedly connected with a gear 703, the operating table 1 is fixedly connected with a rack frame 704, the gear 703 is meshed with the rack frame 704, both ends of the guide rod 705 are fixedly connected with the operating table 1, the guide rod 705 passes through the bracket 31, the surface of the fixed plate 701 is fixedly connected with a limit plate 706, both ends of the limit plate 706 are rotatably connected with a roller 718, the surface of the operating table 1 is fixedly connected with a bending plate 707, a sliding rod 708 is slidably penetrated in the bending plate 707, one end of the sliding rod 708 is fixedly connected with a strip plate 709, the surface of the strip plate 709 is fixedly connected with a fixed block 710, and the strip plate 709 is slidably penetrated with a round rod 71 1. One end of the round rod 711 is fixedly connected with a moving block 712, and the moving block 712 is slidably connected with the strip plate 709. The surfaces of the fixed block 710 and the moving block 712 are both provided with inclined surfaces. The surface of the strip plate 709 is fixedly connected with an iron sheet 713, and the surface of the bending plate 707 is fixedly connected with an electromagnet 714. The surface of the strip plate 709 is fixedly connected with a first spring 715, and the other end of the first spring 715 is fixedly connected with the bending plate 707. Turn on the servo motor 702, and the output end of the servo motor 702 rotates to drive the gear 703 to rotate. At this time, the gear 703 moves along the surface of the rack frame 704, and the servo motor 702 drives the fixed plate 701 to move, and the fixed plate 701 drives the bracket 31 to slide along the arc surface of the guide rod 705. , thereby quickly moving the position of the thick plastic sheet 42. During this process, the fixed plate 701 will drive the limiting plate 706 to move, and the movement of the limiting plate 706 will drive the roller 718 to move. When the roller 718 contacts the inclined surface of the fixed block 710, the roller 718 will squeeze the fixed block 710, and the fixed block 710 will move away from the rack frame 704. The movement of the fixed block 710 will drive the strip plate 709 to move, and the strip plate 709 will drive the slide bar 708 to slide along the bending plate 707. The slide bar 708 has the effect of limiting the movement path of the strip plate 709. The movement of the strip plate 709 will compress the first spring 715. At this time, the first spring 715 is in a compressed state, and then the limiting plate 706 will be out of contact with the inclined surface of the fixed block 710. 710 will come into contact with the surface of the limit plate 706, and then the limit plate 706 will come into contact with the moving block 712, and the moving block 712 will slide along the surface of the strip plate 709 due to the extrusion, and when the moving block 712 comes into contact with the strip plate 709, the strip plate 709 will prevent the moving block 712 from continuing to move, and at this time, the limit plate 706 and the roller 718 will both be out of contact with the fixed block 710, and the first spring 715 will begin to stretch, and the side where the moving block 712 and the fixed block 710 are close to each other will come into contact with the two rollers 718 respectively, and the roller 718 can reduce the friction between the limit plate 706 and the fixed block 710 and the moving block 712, and at this time, the moving block 712 cooperates with the fixed block 710 to limit the position of the limit plate 706, thereby limiting the position of the bracket 31,The thick plastic sheet 42 can be accurately moved to the top of the lower heating plate 54, thereby improving the processing accuracy. After heating, the electromagnet 714 is turned on, and the electromagnet 714 will attract the iron sheet 713, and the iron sheet 713 will drive the strip plate 709 to move, so that the fixed block 710 and the moving block 712 no longer limit the position of the limit plate 706. After that, the servo motor 702 can be controlled to continue to drive the bracket 31 to move, so that the thick plastic sheet 42 can be quickly transported to the mold pressing component 6. The arc surface of the round rod 711 is sleeved with a second spring 716, and the two ends of the second spring 716 are fixedly connected to the round rod 711 and the strip plate 709 respectively. 11 Following the movement of the moving block 712 will stretch the second spring 716, and the second spring 716 will use its own elastic force to delay the moving speed of the moving block 712, thereby delaying the sliding speed of the limit plate 706, which is convenient for the subsequent restriction of the position of the limit plate 706. The surface of the strip plate 709 is fixedly connected with a stopper 717, and the distance between the stopper 717 and the fixed block 710 is less than the length of the limit plate 706. Since the distance between the moving block 712 and the fixed block 710 is less than the length of the limit plate 706, the limit plate 706 will not be restricted by the moving block 712 and the fixed block 710, thereby facilitating the movement and reset of the bracket 31. ,

[0058] like Figure 8 and Fig.11 As shown, a rotating block 82 is rotatably connected inside the mounting plate 81, one end of the rotating block 82 is fixedly connected to a connecting rod 83, a sleeve 84 is slidably connected to the surface of the connecting rod 83, the sleeve 84 is fixedly connected to the scraper 85, and a bolt 86 is connected to the inner thread of the connecting rod 83. During the movement of the bracket 31, the fixed plate 701 will drive the mounting plate 81 to move, the movement of the mounting plate 81 will drive the rotating block 82 to move, the movement of the rotating block 82 will drive the connecting rod 83 to move, the movement of the connecting rod 83 will drive the sleeve 84 to move, the movement of the sleeve 84 will drive the scraper 85 to slide along the tooth surface of the rack frame 704, and the scraper 85 Foreign matter attached to the tooth surface of the rack frame 704 will be scraped off. The arc surface of the rotating block 82 is sleeved with a torsion spring 87. The two ends of the torsion spring 87 are fixedly connected to the support plate and the rotating block 82 respectively. The torsion spring 87 will drive the rotating block 82 to rotate with its own torque, and the rotating block 82 will drive the connecting rod 83 to rotate. The sleeve 84 follows the rotation of the connecting rod 83 to make the scraper 85 rest against the tooth surface of the rack frame 704. The vertical cross-section of the scraper 85 is arc-shaped. The scraper 85 is made of elastic material. The scraper 85 with an arc-shaped vertical cross-section will drive the foreign matter to move. Due to the obstruction of the scraper 85, the foreign matter will fall to both sides of the rack frame 704.

[0059] like Figure 1-Figure 11 As shown, a method for using a plastic sheet hot pressing forming device comprises the following steps:

[0060] S1, placing a thick plastic sheet 42 to be hot-pressed into a pre-sewn cloth bag 41 to complete a component to be processed 4;

[0061] S2, using the hook belt 34 to limit the cloth bag 41, and using the first electric push rod 32 to raise the lifting frame 33, so that the component to be processed 4 is higher than the lower heating plate 54;

[0062] S3, turn on the servo motor 702, and transfer the component 4 to be processed to the middle of the upper heating plate 52 and the lower heating plate 54 which have been preheated and set to a constant temperature by means of the gear 703 and the rack frame 704. The fixed block 710, the moving block 712 and the limit plate 706 cooperate to accurately limit the position of the bracket 31. The scraper 85 will promptly scrape off foreign matter attached to the tooth surface of the rack frame 704. The lifting frame 33 is moved downward by means of the first electric push rod 32 to make the cloth bag 41 contact with the lower heating plate 54. The second electric push rod 51 is controlled to press the upper heating plate 52 downward to contact with the cloth bag 41.

[0063] S4, according to the material characteristics of the thick plastic sheet 42, the upper electric heating tube 53 and the lower electric heating tube 55 are turned on, and the thick plastic sheet 42 is heated to a suitable temperature by means of the upper heating plate 52 and the lower heating plate 54;

[0064] S5, after heating is completed, the lifting frame 33 is lifted again to make the component 4 to be processed higher than the lower mold 64, and then the component 4 to be processed is transferred to the upper part of the lower mold 64, and then the lifting frame 33 is moved down to make the cloth bag 41 contact with the lower mold 64;

[0065] S6, the upper mold 62 is pressed down by the hydraulic press 61 to close the mold, and at the same time, coolant is introduced into the upper cooling coil 63 and the lower cooling coil 65 to cool the upper mold 62 and the lower mold 64, thereby reducing the temperature of the thick plastic sheet 42 to the shaping temperature;

[0066] S7, opening the molded component 6, and then moving the component 4 to be processed out of the lower mold 64 by means of the first electric push rod 32;

[0067] S8, controlling the output end of the servo motor 702 to rotate in the opposite direction to move the bracket 31 to a suitable position;

[0068] S9, take out the cloth bag 41, and then take out the thick plastic sheet 42 from the cloth bag 41, and the hot pressing molding operation can be completed.

[0069] like Figure 1-Figure 11 As shown, the cloth bag 41 is made of two pieces of overlapped and aligned high-temperature resistant flannel cloth, and then three positioning edges are processed by sewing technology according to the size of the thick plastic plate 42. The upper electric heating tube 53 and the lower electric heating tube 55 are temperature controlled by an intelligent temperature controller, and the model of the intelligent temperature controller includes but is not limited to XMTA-2201. The upper mold 62 and the lower mold 64 are temperature controlled by a mold temperature controller, and the model of the mold temperature controller includes but is not limited to STM-900W.

[0070] like Figure 1-Figure 11 As shown, step S3 is specifically as follows:

[0071] When the material of the thick plastic sheet 42 is polycarbonate, the heating temperature is 157-163°C;

[0072] When the material of the thick plastic sheet 42 is acrylonitrile-butadiene-styrene copolymer, the heating temperature is 135-140°C;

[0073] When the material of the thick plastic sheet 42 is polymethyl methacrylate, the heating temperature is 105-110°C;

[0074] The heating conditions of the thick plastic sheet 42 must be adjusted according to the specific molding shape of the molded component 6 and the thickness of the sheet, and the temperature must be fine-tuned and the heating time must be controlled.

[0075] The overall working principle is that when the thick plastic sheet 42 needs to be processed, the thick plastic sheet 42 is placed in the cloth bag 41, and then the cloth bag 41 is hooked and fixed by the hook belt 34, and then the output end of the first electric push rod 32 is controlled to extend, and the output end of the first electric push rod 32 will drive the lifting frame 33 to move upward, and the movement of the lifting frame 33 will drive the hook belt 34 to move, and the movement of the hook belt 34 will drive the cloth bag 41 to move upward, and when the cloth bag 41 is higher than the lower heating plate 54, the servo motor 702 is turned on, and the rotation of the output end of the servo motor 702 will drive the gear 703 to rotate, and at this time, the gear 703 will move along the surface of the rack frame 704, and the servo motor 702 will drive the fixed plate 701 to move, and the fixed plate 701 will drive the bracket 31 along the guide The rod 705 slides on the arc surface, thereby quickly moving the position of the thick plastic sheet 42. During this process, the fixed plate 701 will drive the limit plate 706 to move, and the movement of the limit plate 706 will drive the roller 718 to move. When the roller 718 contacts the inclined surface of the fixed block 710, the roller 718 will squeeze the fixed block 710, and the fixed block 710 will move away from the rack frame 704. The movement of the fixed block 710 will drive the strip plate 709 to move, and the strip plate 709 will drive the slide bar 708 to slide along the bending plate 707. The slide bar 708 has the effect of limiting the moving path of the strip plate 709. The movement of the strip plate 709 will compress the first spring 715. At this time, the first spring 715 is in a compressed state, and then the limit plate 706 will contact the fixed block When the inclined surface of 710 is out of contact, the fixed block 710 will be against the surface of the limit plate 706, and then the limit plate 706 will contact the moving block 712. The moving block 712 will slide along the surface of the strip plate 709 due to the extrusion, and the round rod 711 will follow the movement of the moving block 712 to stretch the second spring 716. The second spring 716 will use its own elastic force to delay the movement speed of the moving block 712, thereby delaying the sliding speed of the limit plate 706, which is convenient for the subsequent restriction of the position of the limit plate 706. When the moving block 712 is close to the side of the second spring 716 and contacts with the strip plate 709, the strip plate 709 will prevent the moving block 712 from continuing to move. At this time, the limit plate 706 and the roller 718 will both be out of contact with the fixed block 710, and the first spring 71 5 begins to stretch, and the side where the moving block 712 and the fixed block 710 are close to each other will contact the two rollers 718 respectively. The rollers 718 can reduce the friction between the limit plate 706 and the fixed block 710 and the moving block 712. At this time, the moving block 712 cooperates with the fixed block 710 to limit the position of the limit plate 706, thereby limiting the position of the bracket 31, so that the thick plastic sheet 42 can be accurately moved to the top of the lower heating plate 54, thereby improving the processing accuracy. Then, the output end of the first electric push rod 32 is controlled to shrink, so that the cloth bag 41 contacts the lower heating plate 54, and then the output end of the second electric push rod 51 is controlled to stretch, so that the upper heating plate 52 moves downward, and at the same time, the upper electric heating tube 53 and the lower electric heating tube 55 are controlled to heat the upper heating plate 52 and the lower heating plate 54.After the upper heating plate 52 contacts the cloth bag 41, it will cooperate with the lower heating plate 54 to heat the cloth bag 41 and the thick plastic sheet 42. After the heating is completed, the output end of the second electric push rod 51 is controlled to shrink, and the output end of the first electric push rod 32 is controlled to extend, so that the cloth bag 41 is higher than the lower mold 64, and then the electromagnet 714 is turned on. The electromagnet 714 will attract the iron sheet 713, and the iron sheet 713 will drive the strip plate 709 to move, so that the fixed block 710 and the moving block 712 no longer limit the position of the limit plate 706. After that, the servo motor 702 can be controlled to continue to drive the bracket 31 to move, so that the thick plastic sheet 42 can be quickly transported to the molding component 6. In this process, the cloth bag 41 can keep the thick plastic sheet 42 warm, and the use of the cloth bag 41 can also avoid reserving cutting edges around the thick plastic sheet 42, thereby improving the utilization rate of the thick plastic sheet 42. Then, the electromagnet 714 is turned off, and the strip plate 709 will be reset again with the help of the elastic force of the first spring 715, and then the roller 718 will contact the inclined surface of another fixed block 710. As above, the fixed block 710 and the movable block 712 will limit the position of the limit plate 706 again, so that the thick plastic sheet 42 is accurately located between the lower mold 64 and the upper mold 62, and then the output end of the first electric push rod 32 is controlled to contract, so that the cloth bag 41 contacts with the lower mold 64, then controls the output end of the hydraulic press 61 to extend to drive the upper mold 62 to move downward, and the upper mold 62 contacts the cloth bag 41 before completing the mold closing, and uses the mold temperature controller to control the temperature of the upper mold 62 and the lower mold 64, and the upper cooling coil 63 and the lower cooling coil 65 can be conveniently introduced with coolant for cooling, and after cooling, controls the output end of the hydraulic press 61 to contract to lift the upper mold 62, and then controls the output end of the first electric push rod 32 to extend to lift the cloth bag 41, and then turns on the electromagnet 714 to release the restriction on the limit plate 706, and then controls the output end of the servo motor 702 to rotate in the opposite direction, The bracket 31 is returned to its original position. During this process, the limit plate 706 drives the roller 718 to move, and the roller 718 contacts the inclined surface of the moving block 712. At this time, the stopper 717 limits the position of the moving block 712 and prevents the moving block 712 from moving. Therefore, the roller 718 squeezes the moving block 712, and the movement of the moving block 712 squeezes the strip plate 709. When the moving block 712 is against the surface of the limit plate 706, since the distance between the moving block 712 and the fixed block 710 is less than the length of the limit plate 706, the limit plate 706 will not be restricted by the moving block 712 and the fixed block 710, thereby facilitating the movement and reset of the bracket 31.

[0076] During the movement of the bracket 31, the fixing plate 701 will drive the mounting plate 81 to move, the movement of the mounting plate 81 will drive the rotating block 82 to move, the movement of the rotating block 82 will drive the connecting rod 83 to move, the movement of the connecting rod 83 will drive the sleeve 84 to move, the movement of the sleeve 84 will drive the scraper 85 to slide along the tooth surface of the rack frame 704. During this process, the torsion spring 87 will use its own torque to drive the rotating block 82 to rotate, the rotating block 82 will drive the connecting rod 83 to rotate, the sleeve 84 follows the rotation of the connecting rod 83 to cause the scraper 85 to abut against the tooth surface of the rack frame 704. As the bracket 31 moves, the scraper 85 will scrape off foreign matter attached to the tooth surface of the rack frame 704. Afterwards, the scraper 85 with an arc-shaped vertical cross-section will also drive the foreign matter to move. Due to the obstruction of the scraper 85, the foreign matter will fall to both sides of the rack frame 704, thereby preventing the foreign matter from adhering to the tooth surface of the rack frame 704 and affecting the normal meshing of the gear 703 and the rack frame 704, thereby improving the stability of the gear 703 during operation. When the scraper 85 needs to be replaced, the bolt 86 is rotated to disengage the bolt 86 from the connecting rod 83, and then the sleeve 84 is removed, and then the sleeve 84 with the new scraper 85 is put on the connecting rod 83, and the position of the sleeve 84 is restricted by the bolt 86 to complete the replacement of the scraper 85.

[0077] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A plastic sheet hot pressing forming device, characterized in that: The invention comprises an operating table (1), a truss (2), a transfer component (3), a component to be processed (4), a heating component (5) and a molding component (6), wherein the transfer component (3) comprises a bracket (31), a surface of the bracket (31) is fixedly connected with a first electric push rod (32), an output end of the first electric push rod (32) is fixedly connected with a lifting frame (33), a surface of the lifting frame (33) is fixedly connected with a hook belt (34), the component to be processed (4) comprises a cloth bag (41), the cloth bag (41) is snap-fittedly connected to the hook belt (34), an inner wall of the cloth bag (41) is slidably connected with a thick plastic plate (42), and the heating component (5) comprises a second electric push rod (51), the second electric push rod (51) is fixedly connected to the truss (2), an output end of the second electric push rod (51) is fixedly connected with an upper guide The hot plate, an upper electric heating tube (53) is inserted into the upper heat conducting plate, a lower heat conducting plate is fixedly connected to the surface of the operating table (1), a lower electric heating tube (55) is inserted into the lower heat conducting plate, the molding assembly (6) comprises an oil press (61), the oil press (61) is fixedly connected to the truss (2), an upper mold (62) is fixedly connected to the output end of the oil press (61), an upper cooling coil (63) is inserted into the upper mold (62), a lower mold (64) is fixedly connected to the surface of the operating table (1), a lower cooling coil (65) is inserted into the lower mold (64), the upper heating plate (52) and the lower heating plate (54) are both made of aluminum alloy, the material of the thick plastic plate (42) includes but is not limited to polycarbonate, acrylonitrile-butadiene-styrene copolymer and polymethyl methacrylate, and also includes: A transfer structure (7) is arranged on the surface of the support (31) and is used for automatically transferring thick plastic plates (42), wherein the transfer structure (7) comprises a fixing plate (701) fixedly mounted on the surface of the support (31), a gear (703) and a rack frame (704) for driving the support (31) to move, and a guide rod (705) for limiting the moving path of the support (31); A cleaning structure (8) is arranged on the surface of the fixing plate (701) and is used to clean foreign matter on the surface of the rack frame (704). The cleaning structure (8) comprises a mounting plate (81) fixedly mounted on the surface of the fixing plate (701) and a scraper (85) for scraping away foreign matter.

2. A plastic sheet hot pressing forming device according to claim 1, characterized in that: The surface of the fixed plate (701) is fixedly connected to a servo motor (702), the output end of the servo motor (702) is fixedly connected to a gear (703), the operating table (1) is fixedly connected to a rack frame (704), the gear (703) and the rack frame (704) are meshed, both ends of the guide rod (705) are fixedly connected to the operating table (1), the guide rod (705) passes through the bracket (31), the surface of the fixed plate (701) is fixedly connected to a limit plate (706), both ends of the limit plate (706) are rotatably connected to rollers (718), the surface of the operating table (1) is fixedly connected to a bending plate (707), a sliding rod (708) is slidably passed through the bending plate (707), and the sliding rod (708) One end of the strip plate (709) is fixedly connected to the strip plate (709), the surface of the strip plate (709) is fixedly connected to a fixed block (710), a round rod (711) is slidably passed through the strip plate (709), one end of the round rod (711) is fixedly connected to a moving block (712), the moving block (712) is slidably connected to the strip plate (709), the surfaces of the fixed block (710) and the moving block (712) are both provided with inclined surfaces, the surface of the strip plate (709) is fixedly connected to an iron sheet (713), the surface of the bending plate (707) is fixedly connected to an electromagnet (714), the surface of the strip plate (709) is fixedly connected to a first spring (715), and the other end of the first spring (715) is fixedly connected to the bending plate (707).

3. A plastic sheet hot pressing forming device according to claim 2, characterized in that: The arc surface of the round rod (711) is sleeved with a second spring (716), and the two ends of the second spring (716) are respectively fixedly connected to the round rod (711) and the strip plate (709).

4. A plastic sheet hot pressing forming device according to claim 2, characterized in that: A stopper (717) is fixedly connected to the surface of the strip plate (709), and the distance between the stopper (717) and the fixed block (710) is smaller than the length of the limiting plate (706).

5. The plastic sheet hot pressing forming device according to claim 1, characterized in that: A rotating block (82) is rotatably connected inside the mounting plate (81), one end of the rotating block (82) is fixedly connected to a connecting rod (83), a sleeve (84) is slidably connected to the surface of the connecting rod (83), the sleeve (84) is fixedly connected to the scraper (85), and a bolt (86) is threadedly connected to the inner surface of the connecting rod (83).

6. A plastic sheet hot pressing forming device according to claim 5, characterized in that: The arc surface of the rotating block (82) is sleeved with a torsion spring (87), and the two ends of the torsion spring (87) are respectively fixedly connected to the support plate and the rotating block (82).

7. The plastic sheet hot pressing forming device according to claim 5, characterized in that: The vertical cross section of the scraper (85) is in the shape of an arc, and the scraper (85) is made of elastic material.

8. A method for using the plastic sheet hot pressing forming device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, placing a thick plastic sheet (42) to be hot-pressed into a pre-sewn cloth bag (41) to complete a component to be processed (4); S2, using the hook belt (34) to limit the cloth bag (41), and using the first electric push rod (32) to raise the lifting frame (33), so that the component to be processed (4) is higher than the lower heating plate (54); S3, turn on the servo motor (702), and transfer the component (4) to be processed to the middle of the upper heating plate (52) and the lower heating plate (54) which have been preheated and set to a constant temperature by means of the gear (703) and the rack frame (704). The fixed block (710), the movable block (712) and the limit plate (706) cooperate to accurately limit the position of the bracket (31). The scraper (85) will promptly scrape off foreign matter attached to the tooth surface of the rack frame (704). The lifting frame (33) is moved downward by means of the first electric push rod (32) so that the cloth bag (41) contacts the lower heating plate (54). The second electric push rod (51) is controlled to press the upper heating plate (52) downward so as to contact the cloth bag (41). S4, turning on the upper electric heating tube (53) and the lower electric heating tube (55) according to the material characteristics of the thick plastic sheet (42), and heating the thick plastic sheet (42) to a suitable temperature with the help of the upper heating plate (52) and the lower heating plate (54); S5. After heating is completed, the lifting frame (33) is lifted again to make the component to be processed (4) higher than the lower mold (64), and then the component to be processed (4) is transferred to the upper part of the lower mold (64), and then the lifting frame (33) is moved downward to make the cloth bag (41) contact with the lower mold (64); S6, using a hydraulic press (61) to press the upper mold (62) downward to close the mold, and at the same time, passing cooling liquid into the upper cooling coil (63) and the lower cooling coil (65) to cool the upper mold (62) and the lower mold (64), thereby reducing the temperature of the thick plastic sheet (42) to a shaping temperature; S7, opening the molded component (6), and then using the first electric push rod (32) to move the component to be processed (4) out of the lower mold (64); S8, controlling the output end of the servo motor (702) to rotate in the opposite direction, so as to move the bracket (31) to a suitable position; S9, take down the cloth bag (41), and then take out the thick plastic sheet (42) from the cloth bag (41), and the hot pressing forming operation can be completed.

9. The method for using the plastic sheet hot pressing forming device according to claim 8, characterized in that: The cloth bag (41) is made of two pieces of aligned high-temperature resistant flannel cloth, and three positioning edges are processed by sewing technology according to the size of the thick plastic plate (42). The upper electric heating tube (53) and the lower electric heating tube (55) are temperature controlled by an intelligent temperature controller, and the model of the intelligent temperature controller includes but is not limited to XMTA-2201. The upper mold (62) and the lower mold (64) are temperature controlled by a mold temperature controller, and the model of the mold temperature controller includes but is not limited to STM-900W.

10. The method for using the plastic sheet hot pressing forming device according to claim 8, characterized in that: The step S3 is specifically as follows: When the material of the thick plastic sheet (42) is polycarbonate, the heating temperature is 157-163° C.; When the material of the thick plastic sheet (42) is acrylonitrile-butadiene-styrene copolymer, the heating temperature is 135-140° C.; When the material of the thick plastic sheet (42) is polymethyl methacrylate, the heating temperature is 105-110° C.; The heating conditions of the thick plastic sheet (42) must be based on the specific molding shape of the molded component (6) and the thickness requirements of the sheet, and the temperature must be fine-tuned and the heating time controlled.

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