Precise plastic part injection molding device and method

Abstract

The invention discloses a precise plastic part injection molding device and method, and relates to the technical field of plastic part injection molding. The precise plastic part injection molding device comprises a rack, a mold mechanism is arranged at one end of the rack, a first power mechanism and an injection molding mechanism are installed on the rack, the first power mechanism is arranged at the end, away from the mold mechanism, of the rack, and the injection molding mechanism is connected with the first power mechanism; a power mechanism II is mounted on the injection molding mechanism; a feeding mechanism is installed above the end, away from the mold mechanism, of the injection molding mechanism, a plurality of heating mechanisms are installed at the end, close to the mold mechanism, of the injection molding mechanism, and the second power mechanism is connected with the heating mechanisms. The feeding mechanism comprises a supporting unit, a first raw material dispersing unit and a second raw material dispersing unit. The supporting unit is installed on the first power mechanism. The dispersion effect and efficiency during raw material feeding are improved, meanwhile, the temperature can be detected in the raw material heating and melting process, and the injection molding quality of precise plastic parts is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic part injection molding, and in particular to a precision plastic part injection molding device and method. Background Art

[0002] Precision plastic parts are widely used in medical equipment, consumer electronics, optical devices, automotive precision parts and other fields. In the prior art, when processing and producing precision plastic parts, injection molding machines are usually used for injection molding. Existing injection molding machines usually include steps such as raw material feeding, material melting, and injection molding.

[0003] In the prior art, a stirring rod is mostly used to stir and disperse the raw materials when feeding the raw materials. After feeding, a heating temperature range is usually set before batch production. Since only simple stirring and dispersion is used, the dispersion effect is poor and the dispersion efficiency is also low. In addition, the prior art cannot detect the temperature in real time when heating and melting the raw materials, which easily leads to abnormal batches of injection molded parts. The injection molding device in the prior art is usually integrated, which is not convenient for cleaning the injection molding device after the injection molding is completed. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a precision plastic parts injection molding device, comprising a frame, a mold mechanism is arranged at one end of the frame, a power mechanism 1 and an injection molding mechanism are installed on the frame, the power mechanism 1 is arranged at the end of the frame away from the mold mechanism, the injection molding mechanism is connected to the power mechanism 1, and a power mechanism 2 is installed on the injection molding mechanism; a feeding mechanism is installed above the end of the injection molding mechanism away from the mold mechanism, a plurality of heating mechanisms are installed on the end of the injection molding mechanism close to the mold mechanism, and the power mechanism 2 is connected to the heating mechanism; the feeding mechanism comprises a supporting unit, a raw material dispersion unit 1 and a raw material dispersion unit 2, the supporting unit is installed on the power mechanism 1, the supporting unit is connected to the injection molding mechanism, the raw material dispersion unit 1 and the raw material dispersion unit 2 are connected, and both are installed on the supporting unit.

[0005] Furthermore, the raw material dispersing unit 1 includes a driving mechanism, a rotating cylinder, a rotating shaft 3, a dispersing rod and a sliding ring, the driving mechanism is installed above the supporting unit, the rotating cylinder and the rotating shaft 3 are connected to the driving mechanism, the rotating cylinder is rotatably connected to the supporting unit, support rods are fixedly installed on both sides of the rotating cylinder, a supporting cylinder is fixedly installed on the support rods, a moving cavity is opened in each of the supporting cylinders, the dispersing rod is slidably installed in the moving cavity through a sliding ring, a spring 3 is connected between the sliding ring and the upper end of the moving cavity, the support rod and the dispersing rod are both in an "L" shape, and the dispersing rod is evenly distributed on one side of the rotating cylinder. A plurality of dispersion teeth are arranged at intervals, the rotating shaft three is coaxially rotatably connected with the rotating cylinder, and the rotating shaft three and the rotating cylinder are relatively fixed in the gravity direction, a support ring one and a dispersion leaf two are coaxially fixedly installed in the middle of the rotating shaft three, a support ring two is fixedly installed at the lower end of the rotating shaft three, a dispersion plate is arranged at the upper end of the support ring two, the dispersion plate and the rotating shaft three are connected by splines, the dispersion leaf two is arranged between the support ring one and the rotating cylinder, the dispersion plate is coaxially arranged in the supporting unit, a plurality of blanking holes are evenly opened on the dispersion plate, a spring two is connected between the dispersion plate and the support ring two, and a spring one is connected between the dispersion plate and the support ring one.

[0006] Furthermore, the driving mechanism includes a rotating shaft 2, a supporting seat 2, a bevel gear 2, a bevel gear 3, a motor 2 and a belt transmission mechanism 1, the supporting seat 2 and the motor 2 are both fixedly mounted on the supporting unit, the rotating shaft 2 is rotatably mounted on the supporting seat 2, and a bevel gear 1 is coaxially fixedly mounted on one end of the rotating shaft 2 close to the bevel gear 2, the bevel gear 2 and the bevel gear 3 are both meshed and connected with the bevel gear 1, and the bevel gear 2 and the bevel gear 3 are both perpendicular to the bevel gear 1; the bevel gear 2 is coaxially fixedly mounted on the rotating cylinder, the bevel gear 3 is coaxially fixedly mounted on the upper end of the rotating shaft 3, the bevel gear 2 and the bevel gear 3 are arranged face to face, and the output shaft of the motor 2 is connected to the rotating shaft 3 through a belt transmission mechanism 1.

[0007] Furthermore, the raw material dispersion unit 2 includes a rotating shaft 1 and a belt transmission mechanism 2. The rotating shaft 1 is rotatably installed at the lower part of the supporting unit. The rotating shaft 1 is connected to the rotating shaft 2 through the belt transmission mechanism 2. Cams are fixedly installed at both ends of the rotating shaft 1, and multiple dispersion leaves 1 are arranged between the two cams.

[0008] Furthermore, the power mechanism 1 includes a hydraulic cylinder 1, a support frame, a support seat 1, a hydraulic cylinder 2, a mobile frame 1, a connecting frame, a motor 1, a mobile frame 2, a belt 1 and a pulley 2. The support seat 1 is fixedly mounted on an end of the frame away from the mold mechanism, the hydraulic cylinder 1 is fixedly mounted on the support seat 1, the mobile frame 1 and the mobile frame 2 are slidably mounted on the guide rail of the frame at intervals, the support frame is fixedly mounted on one side of the mobile frame 2, the hydraulic cylinder 2 is fixedly mounted on the mobile frame 1, a connecting sleeve is fixedly mounted on the piston rod of the hydraulic cylinder 2, the connecting frame is fixedly mounted on the piston rod of the hydraulic cylinder 1, the motor 1 is fixedly mounted on the mobile frame 2, a pulley 1 is coaxially fixedly mounted on the output shaft of the motor 1, the pulley 2 is rotatably mounted on the connecting frame, the pulley 1 and the pulley 2 are connected by a belt 1, and the connecting sleeve, the connecting frame, the mobile frame 2 and the pulley 2 are all connected to the injection molding mechanism.

[0009] Compared with the prior art, the present invention has the following beneficial effects: (1) the feeding mechanism of the present invention can increase the contact time between the dispersion teeth and the raw materials on the dispersion plate, thereby improving the efficiency and effect of breaking up the raw materials on the dispersion plate, and at the same time can make the dispersion plate vibrate back and forth, thereby further improving the dispersion efficiency of the raw materials and breaking up partially bonded raw materials; (2) the feeding mechanism of the present invention can make the dispersion plate rotate while vibrating, and realize the rotation of the dispersion plate and the dispersion rod in opposite directions, thereby greatly improving the dispersion of the raw materials and the efficiency and effect of breaking up the bonded raw materials; at the same time, the rotation of the dispersion blades can be used to break up the raw materials again, thereby improving the dispersion state of the raw materials when entering the injection molding mechanism, thereby accelerating the subsequent melting speed and melting of the raw materials. The quality of the injection molding of precision plastic parts is ensured, and the problem that the prior art can only perform simple stirring when feeding the raw materials but cannot achieve sufficient and thorough dispersion of the raw materials is solved; (3) the heating mechanism in the present invention can detect the temperature of the injection cylinder, heating cylinder one, and heating cylinder two during the injection molding process, thereby ensuring the temperature stability and preventing the problem of poor melting quality and low melting efficiency of the raw materials due to temperature not meeting the requirements during the injection molding process, thereby ensuring the quality of subsequent injection molding of precision plastic parts; (4) after the injection molding is completed, the present invention can separate the injection cylinder, heating cylinder one, heating cylinder two, and feeding cylinder by removing the flange assembly one and multiple flange assemblies two, so as to facilitate the cleaning of the residual materials in the injection molding mechanism, thereby improving the convenience of cleaning the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 .

[0011] Figure 2 It is a front view of the present invention.

[0012] Figure 3 It is a top view of the present invention.

[0013] Figure 4 It is a side view of the present invention.

[0014] Figure 5 The overall structure of the present invention is shown in FIG. Figure 2 .

[0015] Figure 6 It is a schematic diagram of the structure of the feeding mechanism of the present invention.

[0016] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0017] Figure 8 The local structure of the feeding mechanism of the present invention is shown in FIG. Figure 1 .

[0018] Fig. 9 The local structure of the feeding mechanism of the present invention is shown in FIG. Figure 2 .

[0019] Fig.10 The local structure of the feeding mechanism of the present invention is shown in FIG. Figure 3 .

[0020] Fig.11 It is a top view of the local structure of the feeding mechanism of the present invention.

[0021] Fig.12 For the present invention Fig.11 Cross-sectional view along direction BB.

[0022] Fig.13 The local structure of the present invention is shown in FIG. Figure 1 .

[0023] Fig.14 The local structure of the present invention is shown in FIG. Figure 2 .

[0024] Fig.15 The local structure of the present invention is shown in FIG. Figure 3 .

[0025] Fig.16 For the present invention Fig.14 Cross-sectional view along CC direction.

[0026] Fig.17 The local structure of the injection molding mechanism of the present invention is shown in FIG. Figure 1 .

[0027] Fig.18 The local structure of the injection molding mechanism of the present invention is shown in FIG. Figure 2 .

[0028] Figure numbers: 101-frame; 201-hydraulic cylinder 1; 202-support frame; 203-support seat 1; 204-hydraulic cylinder 2; 205-mobile frame 1; 206-connecting sleeve; 207-connecting frame; 208-pulley 1; 209-motor 1; 210-mobile frame 2; 211-belt 1; 212-pulley 2; 301-feeding box; 302-discharging pipe; 303-control valve; 304-gate; 305-support plate; 3 06-rotating shaft 1; 307-pulley 3; 308-belt 2; 309-pulley 4; 310-rotating shaft 2; 311-support seat 2; 312-bevel gear 1; 313-bevel gear 2; 314-rotating cylinder; 315-bevel gear 3; 316-rotating shaft 3; 317-pulley 5; 318-pulley 6; 319-belt 3; 320-motor 2; 321-support rod; 322-support cylinder; 323-dispersion rod; 324- Dispersion tooth; 325-cam; 326-dispersion leaf 1; 327-dispersion plate; 328-spring 1; 329-support ring 1; 330-dispersion leaf 2; 331-support ring 2; 332-spring 2; 333-sliding ring; 334-spring 3; 401-heating cylinder; 402-flange 1; 403-flange 2; 404-detection ring; 405-heating coil; 406-bolt assembly 1; 407-temperature sensor; 501-electric Machine three; 502-mobile frame three; 503-rotating shaft four; 504-cylindrical gear; 505-gear ring; 601-injection cylinder; 602-feeding cylinder; 603-feeding pipe; 604-spline shaft; 605-rotating ring; 606-bolt assembly two; 607-flange three; 608-flange four; 609-injection pipe; 610-heating cylinder one; 611-heating cylinder two; 612-screw conveying shaft; 613-check valve; 614-extrusion cone. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0030] Example: Figure 1-Figure 18A precision plastic parts injection molding device shown in the figure includes a frame 101, a mold mechanism is arranged at one end of the frame 101, a power mechanism 1 and an injection molding mechanism are installed on the frame 101, the power mechanism 1 is arranged at the end of the frame 101 away from the mold mechanism, the injection molding mechanism is connected to the power mechanism 1, and a power mechanism 2 is installed on the injection molding mechanism; a feeding mechanism is installed above the end of the injection molding mechanism away from the mold mechanism, a plurality of heating mechanisms are installed on the end of the injection molding mechanism close to the mold mechanism, and the power mechanism 2 is connected to the heating mechanism; the feeding mechanism includes a supporting unit, a raw material dispersing unit 1 and a raw material dispersing unit 2, the supporting unit is installed on the power mechanism 1, the supporting unit is connected to the injection molding mechanism, the raw material dispersing unit 1 and the raw material dispersing unit 2 are connected, and both are installed on the supporting unit.

[0031] The raw material dispersing unit 1 includes a driving mechanism, a rotating cylinder 314, a rotating shaft 316, a dispersing rod 323 and a sliding ring 333. The driving mechanism is installed above the supporting unit. The rotating cylinder 314 and the rotating shaft 316 are both connected to the driving mechanism. The rotating cylinder 314 is rotatably connected to the supporting unit. Support rods 321 are fixedly installed on both sides of the rotating cylinder 314. Support cylinders 322 are fixedly installed on the support rods 321. A moving cavity is opened in each support cylinder 322. The dispersing rod 323 is slidably installed in the moving cavity through a sliding ring 333. A spring 334 is connected between the sliding ring 333 and the upper end of the moving cavity. The support rod 321 and the dispersing rod 323 are both "L"-shaped. A plurality of dispersing teeth are evenly spaced on the side of the dispersing rod 323 facing the rotating cylinder 314. 324, the rotating shaft three 316 is coaxially connected to the rotating cylinder 314 for rotation, and the rotating shaft three 316 and the rotating cylinder 314 are relatively fixed in the direction of gravity, the middle part of the rotating shaft three 316 is coaxially fixedly installed with a support ring one 329 and a dispersion leaf two 330, the lower end of the rotating shaft three 316 is fixedly installed with a support ring two 331, the upper end of the support ring two 331 is provided with a dispersion plate 327, the dispersion plate 327 and the rotating shaft three 316 are connected by a spline, the dispersion leaf two 330 is arranged between the support ring one 329 and the rotating cylinder 314, the dispersion plate 327 is coaxially arranged in the supporting unit, a plurality of blanking holes are evenly opened on the dispersion plate 327, a spring two 332 is connected between the dispersion plate 327 and the support ring two 331, and a spring one 328 is connected between the dispersion plate 327 and the support ring one 329.

[0032] The driving mechanism includes a second rotating shaft 310, a second supporting seat 311, a second bevel gear 313, a third bevel gear 315, a second motor 320 and a first belt transmission mechanism. The second supporting seat 311 and the second motor 320 are both fixedly mounted on the supporting unit. The second rotating shaft 310 is rotatably mounted on the second supporting seat 311. A first bevel gear 312 is coaxially fixedly mounted on one end of the second rotating shaft 310 close to the second bevel gear 313. The second bevel gear 313 and the third bevel gear 315 are both meshed and connected with the first bevel gear 312, and the second bevel gear 313 and the third bevel gear 315 are both perpendicular to the first bevel gear 312. The second bevel gear 313 is coaxially fixedly mounted on the rotating cylinder 314, and the third bevel gear 315 is coaxially fixedly mounted on the upper end of the third rotating shaft 316. The second bevel gear 313 and the third bevel gear 315 are arranged face to face, and the output shaft of the second motor 320 is connected to the third rotating shaft 316 through a first belt transmission mechanism.

[0033] The raw material dispersing unit 2 includes a rotating shaft 306 and a belt transmission mechanism 2. The rotating shaft 306 is rotatably installed at the lower part of the supporting unit. The rotating shaft 306 is connected to the rotating shaft 2 310 through the belt transmission mechanism 2. Cams 325 are fixedly installed at both ends of the rotating shaft 306, and multiple dispersing leaves 326 are arranged between the two cams 325.

[0034] The power mechanism 1 includes a hydraulic cylinder 1 201, a support frame 202, a support seat 1 203, a hydraulic cylinder 204, a mobile frame 1 205, a connecting frame 207, a motor 1 209, a mobile frame 210, a belt 1 211 and a pulley 212. The support seat 1 203 is fixedly mounted on the end of the frame 101 away from the mold mechanism, the hydraulic cylinder 1 201 is fixedly mounted on the support seat 1 203, the mobile frame 1 205 and the mobile frame 210 are slidably mounted on the guide rail of the frame 101 at intervals, the support frame 202 is fixedly mounted on one side of the mobile frame 210, and the hydraulic cylinder 204 is fixedly mounted on the guide rail of the frame 101. The connecting sleeve 206 is fixedly mounted on the movable frame 205, the piston rod of the hydraulic cylinder 204 is fixedly mounted with a connecting sleeve 206, the connecting frame 207 is fixedly mounted on the piston rod of the hydraulic cylinder 201, the motor 209 is fixedly mounted on the movable frame 210, a pulley 208 is coaxially fixedly mounted on the output shaft of the motor 209, the pulley 212 is rotatably mounted on the connecting frame 207, the pulley 208 is connected to the pulley 212 by a belt 211, and the connecting sleeve 206, the connecting frame 207, the movable frame 210 and the pulley 212 are all connected to the injection molding mechanism.

[0035] The power mechanism 2 includes a motor 3 501, a moving frame 3 502, a rotating shaft 4 503 and a ring gear 505. The moving frame 3 502 is slidably installed on the guide rail of the frame 101. There are multiple moving frames 3 502. The motor 3 501 is fixedly installed on one of the moving frames 3 502. The rotating shaft 4 503 is rotatably installed on the moving frame 3 502 away from the motor 3 501. Multiple cylindrical gears 504 are coaxially fixedly installed on the rotating shaft 4 503. The multiple cylindrical gears 504 are arranged at intervals. The ring gear 505 is rotatably installed on the heating mechanism. The ring gear 505 is meshed with the cylindrical gear 504. There are multiple ring gears 505, and they correspond one to one with the cylindrical gears 504.

[0036] The heating mechanism includes a heating tube 401, a detection ring 404 and a heating coil 405. A plurality of heating tubes 401 are arranged at intervals, and the heating tubes 401 correspond to the moving frame three 502 one by one. The heating tubes 401 are fixedly installed on the moving frame three 502. A heating coil 405 for heating is connected in each heating tube 401. Two adjacent heating tubes 401 are connected by a flange assembly one. The gear ring 505 is rotatably installed on the flange assembly one. A detection ring 404 is rotatably installed on each flange assembly one. The detection ring 404 is coaxially fixedly connected with the gear ring 505. A plurality of temperature sensors 407 for measuring the temperature of the injection molding mechanism are arranged at intervals in each detection ring 404.

[0037] The injection molding mechanism includes an injection molding cylinder 601, a feeding cylinder 602, a heating cylinder 1 610 and a heating cylinder 2 611. The injection molding cylinder 601, the heating cylinder 1 610, the heating cylinder 2 611 and the feeding cylinder 602 are coaxially connected in sequence. The injection molding cylinder 601, the heating cylinder 1 610 and the heating cylinder 2 611 are respectively fixedly installed on the corresponding heating cylinder 401. The temperature sensor 407 is used to stably measure the connection between the injection molding cylinder 601 and the heating cylinder 1 610, and the connection between the heating cylinder 1 610 and the heating cylinder 2 611. The heating cylinder 2 611 and the feeding cylinder 602 are connected through a flange assembly 2. The feeding cylinder 602 is fixedly installed on the mobile frame 210. A feeding pipe 603 for feeding is arranged on the feeding cylinder 602. A spiral conveying shaft 612 is coaxially arranged on the feeding cylinder 602, the heating cylinder 2 611, the heating cylinder 2 In the hot cylinder 1 610 and the injection cylinder 601, a spline shaft 604 is fixedly installed on one end of the spiral conveying shaft 612, and an extrusion cone 614 is coaxially fixedly installed on the other end of the spiral conveying shaft 612. A check valve 613 is connected between the spiral conveying shaft 612 and the extrusion cone 614. The spiral conveying shaft 612 is clearance-matched with the connecting frame 207 through the spline shaft 604, and the spline shaft 604 is spline-connected to the pulley 212. A rotating ring 605 is fixedly installed on the end of the spline shaft 604 away from the spiral conveying shaft 612. The rotating ring 605 is rotatably connected to the connecting sleeve 206, and the rotating ring 605 and the connecting sleeve 206 are relatively fixed in the horizontal direction. An injection tube 609 is coaxially fixedly installed on the end of the injection cylinder 601 close to the mold mechanism, and the connecting frame 207 is fixedly installed on the feeding cylinder 602.

[0038] The support unit includes a feed box 301, which is fixedly mounted on the support frame 202. A support plate 305 is detachably mounted above the feed box 301, and a bin door 304 is movably connected to the support plate 305. A discharge pipe 302 is fixedly mounted below the feed box 301, and a control valve 303 for controlling the discharge of materials is mounted on the discharge pipe 302. The discharge pipe 302 is connected to the feed pipe 603. A rotating shaft 1 306 is rotatably mounted on the lower part of the feed box 301. A support seat 2 311 and a motor 2 320 are both fixedly mounted on the support plate 305. A dispersion plate 327 is coaxially arranged at the lower part of the feed box 301, and the dispersion plate 327 is clearance-matched with the feed box 301. A rotating cylinder 314 is coaxially rotatably mounted on the support plate 305, and the rotating cylinder 314 and the support plate 305 are relatively fixed in the vertical direction.

[0039] Belt transmission mechanism one includes pulley five 317, pulley six 318 and belt three 319. Pulley five 317 is coaxially fixedly installed on rotating shaft three 316, pulley six 318 is coaxially fixedly installed on the output shaft of motor two 320, and pulley five 317 and pulley six 318 are connected by belt three 319; belt transmission mechanism two includes pulley three 307, belt two 308 and pulley four 309. Pulley three 307 is coaxially fixedly installed on rotating shaft one 306, pulley four 309 is coaxially fixedly installed on rotating shaft two 310, and pulley three 307 and pulley four 309 are connected by belt two 308.

[0040] Flange assembly one includes flange one 402, flange two 403 and bolt assembly one 406. Flange one 402 is coaxially fixedly installed on one of the heating cylinders 401, flange two 403 is coaxially fixedly installed on another adjacent heating cylinder 401, and flange one 402 and flange two 403 are connected by multiple bolt assemblies one 406; flange assembly two includes bolt assembly two 606, flange three 607 and flange four 608. Flange four 608 is coaxially fixedly installed on heating cylinder two 611, flange three 607 is coaxially fixedly installed on feeding cylinder 602, and flange three 607 and flange four 608 are connected by multiple bolt assemblies two 606.

[0041] The present invention also provides a method for injection molding a precision plastic part using a precision plastic part injection molding device, comprising the following steps:

[0042] S1. Inject the injection molding raw materials used to produce precision plastic parts into the feeding mechanism, and use the raw material dispersing unit 1 and the raw material dispersing unit 2 in the feeding mechanism to disperse the raw materials to ensure the dispersion effect of the raw materials and prevent the injection molding quality of subsequent products from being affected by the adhesion of the raw materials.

[0043] S2. The raw material enters the injection molding mechanism through the feeding mechanism, and is transported to the position of the heating mechanism by the power mechanism 1. The raw material is heated and melted into a liquid by the heating mechanism. During the heating process, the temperature is monitored in real time by multiple temperature sensors 407 to prevent the injection molding quality of subsequent products from being affected by insufficient heating temperature.

[0044] S3, using power mechanism 1 to inject the liquid raw material in the injection mechanism into the mold mechanism for injection molding.

[0045] S4. After molding, if it is necessary to clean the residual materials in the injection molding mechanism, the flange assembly 1 and multiple flange assemblies 2 are removed to separate the injection cylinder 601, the heating cylinder 1 610, the heating cylinder 2 611, and the feeding cylinder 602, so as to clean the residual materials in the injection molding mechanism.

[0046] The working principle of the present invention is as follows: open the warehouse door 304, inject the injection molding raw materials for producing precision plastic parts into the feed box 301, and at the same time open the control valve 303 on the discharge pipe 302, the output shaft of the motor 2 320 drives the pulley 6 318 to rotate, when the pulley 6 318 rotates, it drives the pulley 5 317 to rotate through the belt 3 319, the pulley 5 317 drives the rotating shaft 3 316 to rotate, when the rotating shaft 316 rotates, it drives the bevel gear 3 315 to rotate, the bevel gear 3 315 drives the bevel gear 2 313 to rotate through the bevel gear 1 312, when rotating, the rotation direction of the bevel gear 2 313 is opposite to that of the bevel gear 3 315, when the bevel gear 1 312 rotates, it drives the pulley 4 309 to rotate through the rotating shaft 2 310, the pulley 4 309 drives the pulley 3 307 to rotate through the belt 2 308, the pulley 3 307 drives the rotating shaft 1 306 to rotate, and when the bevel gear 2 313 rotates, it drives the rotating cylinder 314 to rotate.

[0047] When the rotating shaft 316 rotates, the second dispersing blade 330 is driven to rotate, and at the same time, the dispersing plate 327, the spring 1 328, the support ring 1 329, the support ring 2 331 and the spring 2 332 are driven to rotate as a whole. When the second dispersing blade 330 rotates, the falling raw materials are rotated and dispersed. The raw materials falling on the dispersing plate 327 fall through the drop holes on the dispersing plate 327. If there is any raw material adhering, it will remain on the dispersing plate 327. At the same time, when the dispersing plate 327 rotates, the efficiency of dispersing the raw materials is accelerated by the centrifugal force, and at the same time, the partially adhering materials can be removed. When the rotating cylinder 314 rotates, the supporting cylinder 322 is driven to rotate by the supporting rod 321, and the supporting cylinder 322 drives the dispersing rod 323 to rotate. When the dispersing rod 323 rotates, the dispersing teeth 324 are used to disperse the raw materials on the dispersing plate 327, and the bonding materials are broken up by using multiple dispersing teeth 324. Since the rotation direction of the dispersing rod 323 is opposite to the rotation direction of the dispersing plate 327, the contact time between the dispersing teeth 324 and the raw materials on the dispersing plate 327 can be increased, thereby improving the contact time between the dispersing teeth 324 and the raw materials on the dispersing plate 327. When the rotating shaft 306 rotates, the cam 325 and the plurality of dispersion leaves 326 are driven to rotate. When the cam 325 rotates, the dispersion plate 327 is driven to move up and down. Under the action of the spring 1 328 and the spring 2 332, the dispersion plate 327 is vibrated back and forth. When the dispersion plate 327 vibrates, the dispersion efficiency of the raw materials is further improved. At the same time, the partially bonded raw materials can be shaken off, so that the dispersion plate 327 can rotate while vibrating, and the dispersion plate 327 can rotate in the opposite direction to the dispersion rod 323, thereby greatly improving the dispersion of the raw materials and the efficiency and effect of breaking up the bonded raw materials; after the raw materials fall from the drop holes on the dispersion plate 327, the raw materials are once again broken up by the rotation of the dispersion leaves 326, thereby improving the dispersion state of the raw materials when entering the injection molding mechanism, thereby accelerating the subsequent melting speed and melting quality of the raw materials, ensuring the quality of injection molding of precision plastic parts, and solving the problem that the raw materials can only be simply stirred when feeding in the prior art but cannot be fully and thoroughly dispersed.

[0048] The raw material enters the feed barrel 602 from the discharge pipe 302 through the feed pipe 603, the output shaft of the motor 1 209 drives the pulley 1 208 to rotate, when the pulley 1 208 rotates, the pulley 2 212 is driven to rotate through the belt 1 211, the pulley 2 212 drives the spline shaft 604 to rotate, when the spline shaft 604 rotates, the rotating ring 605 rotates in the connecting sleeve 206, the spline shaft 604 drives the spiral conveying shaft 612 to rotate, the raw material passes through the feed barrel 602 into the heating barrel 2 611 and the heating barrel 1 610, thereby sending the raw material to the position of the heating mechanism, the heating coil 405 is energized to generate heat, the raw material passes through multiple heating barrels 401 and becomes a melted liquid, and enters the injection barrel 601 after melting; during the heating and melting process, the output shaft of the motor 3 501 drives the rotating shaft The fourth shaft 503 rotates, and when the rotating shaft 503 rotates, the gear ring 505 is driven to rotate through the cylindrical gear 504, and the gear ring 505 drives multiple temperature sensors 407 to rotate through the detection ring 404. When the temperature sensor 407 rotates, the temperature of the injection cylinder 601, the heating cylinder 1 610, and the heating cylinder 2 611 is detected. If the temperature meets the requirements (the temperature standard is set in advance according to the raw material performance), the operation continues. If the temperature does not meet the requirements, the speed of the material conveying by the spiral conveying shaft 612 is adjusted or the heating power of the heating coil 405 is changed to make the temperature meet the requirements; thereby ensuring the temperature stability, preventing the problem of poor raw material melting quality and low melting efficiency due to temperature not meeting the requirements during the injection molding process, and thus ensuring the subsequent injection molding quality of precision plastic parts.

[0049] The piston rod of the hydraulic cylinder 1 201 drives the feed cylinder 602 to move through the connecting frame 207, and the feed cylinder 602 drives the moving frame 210 to move on the guide rail of the frame 101, and at the same time drives the feed mechanism, the heating cylinder 2 611, the heating cylinder 1 610, and the injection cylinder 601 to move, so that the multiple moving frames 3 502 move on the guide rail of the frame 101, so that the injection cylinder 601 and the injection tube 609 move toward the direction close to the mold mechanism. When the injection tube 609 is inserted into the mold mechanism, After the injection port, the piston rod of the hydraulic cylinder 204 pushes the spline shaft 604 to move on the pulley 212 through the connecting sleeve 206, thereby driving the screw conveying shaft 612 to move, and the screw conveying shaft 612 drives the extrusion cone 614 to move through the check valve 613. The molten raw material enters the end of the extrusion cone 614 close to the mold mechanism through the check valve 613, and the molten raw material is squeezed into the injection tube 609 through the extrusion cone 614, and enters the mold mechanism from the injection tube 609 for injection molding.

[0050] After the injection molding is completed, if it is necessary to clean the residual materials in the injection molding mechanism, the flange assembly 1 and multiple flange assemblies 2 can be removed to separate the injection cylinder 601, the heating cylinder 1 610, the heating cylinder 2 611, and the feeding cylinder 602 to facilitate the cleaning of the residual materials in the injection molding mechanism.

Claims

1. A precision plastic parts injection molding device, comprising a frame (101), one end of the frame (101) is provided with a mold mechanism, characterized in that: A power mechanism 1 and an injection molding mechanism are installed on the frame (101); the power mechanism 1 is arranged at an end of the frame (101) away from the mold mechanism; the injection molding mechanism is connected to the power mechanism 1; and a power mechanism 2 is installed on the injection molding mechanism; a feeding mechanism is installed above the end of the injection molding mechanism away from the mold mechanism; a plurality of heating mechanisms are installed on the end of the injection molding mechanism close to the mold mechanism; and the power mechanism 2 is connected to the heating mechanism; the feeding mechanism comprises a support unit, a raw material dispersing unit 1, and a raw material dispersing unit 2; the support unit is installed on the power mechanism 1; the support unit is connected to the injection molding mechanism; the raw material dispersing unit 1 and the raw material dispersing unit 2 are connected, and both are installed on the support unit.

2. A precision plastic parts injection molding device as claimed in claim 1, characterized in that: The raw material dispersing unit 1 comprises a driving mechanism, a rotating cylinder (314), a rotating shaft 3 (316), a dispersing rod (323) and a sliding ring (333); the driving mechanism is installed above the supporting unit; the rotating cylinder (314) and the rotating shaft 3 (316) are both connected to the driving mechanism; the rotating cylinder (314) is rotatably connected to the supporting unit; support rods (321) are fixedly installed on both sides of the rotating cylinder (314); support cylinders (322) are fixedly installed on the support rods (321); a movable cavity is provided in each of the support cylinders (322); and the dispersing rods (323) are slidably installed in the movable cavity through the sliding ring (333).

3. A precision plastic parts injection molding device as claimed in claim 2, characterized in that: A spring three (334) is connected between the sliding ring (333) and the upper end of the moving chamber. The support rod (321) and the dispersion rod (323) are both "L" shaped. A plurality of dispersion teeth (324) are evenly spaced on the side of the dispersion rod (323) facing the rotating cylinder (314). The rotating shaft three (316) is coaxially rotatably connected to the rotating cylinder (314), and the rotating shaft three (316) and the rotating cylinder (314) are relatively fixed in the direction of gravity. A support ring one (329) and a dispersion leaf two (330) are coaxially fixedly installed in the middle of the rotating shaft three (316).

4. A precision plastic parts injection molding device as claimed in claim 3, characterized in that: A support ring 2 (331) is fixedly mounted on the lower end of the rotating shaft 3 (316); a dispersion plate (327) is arranged on the upper end of the support ring 2 (331); the dispersion plate (327) is connected to the rotating shaft 3 (316) via a spline; the dispersion leaf 2 (330) is arranged between the support ring 1 (329) and the rotating cylinder (314); the dispersion plate (327) is coaxially arranged in the supporting unit; a plurality of blanking holes are evenly opened on the dispersion plate (327); a spring 2 (332) is connected between the dispersion plate (327) and the support ring 2 (331); and a spring 1 (328) is connected between the dispersion plate (327) and the support ring 1 (329).

5. A precision plastic parts injection molding device as claimed in claim 4, characterized in that: The driving mechanism comprises a second rotating shaft (310), a second supporting seat (311), a second bevel gear (313), a third bevel gear (315), a second motor (320) and a first belt transmission mechanism. The second supporting seat (311) and the second motor (320) are both fixedly mounted on the supporting unit. The second rotating shaft (310) is rotatably mounted on the second supporting seat (311). The first bevel gear (312) is coaxially fixedly mounted on one end of the second rotating shaft (310) close to the second bevel gear (313).

6. A precision plastic parts injection molding device as claimed in claim 5, characterized in that: The bevel gear 2 (313) and the bevel gear 3 (315) are both meshed and connected with the bevel gear 1 (312), and the bevel gear 2 (313) and the bevel gear 3 (315) are both perpendicular to the bevel gear 1 (312); the bevel gear 2 (313) is coaxially fixedly mounted on the rotating cylinder (314), and the bevel gear 3 (315) is coaxially fixedly mounted on the upper end of the rotating shaft 3 (316). The bevel gear 2 (313) and the bevel gear 3 (315) are arranged face to face, and the output shaft of the motor 2 (320) is connected to the rotating shaft 3 (316) through a belt transmission mechanism 1.

7. A precision plastic parts injection molding device as claimed in claim 6, characterized in that: The raw material dispersing unit 2 includes a rotating shaft 1 (306) and a belt transmission mechanism 2. The rotating shaft 1 (306) is rotatably installed at the lower part of the supporting unit. The rotating shaft 1 (306) is connected to the rotating shaft 2 (310) through the belt transmission mechanism 2. Cams (325) are fixedly installed at both ends of the rotating shaft 1 (306), and a plurality of dispersing leaves 1 (326) are arranged between the two cams (325).

8. A precision plastic parts injection molding device as claimed in claim 7, characterized in that: The power mechanism 1 comprises a hydraulic cylinder 1 (201), a support frame (202), a support seat 1 (203), a hydraulic cylinder 2 (204), a movable frame 1 (205), a connecting frame (207), a motor 1 (209), a movable frame 2 (210), a belt 1 (211) and a pulley 2 (212); the support seat 1 (203) is fixedly mounted on an end of the frame (101) away from the mold mechanism; the hydraulic cylinder 1 (201) is fixedly mounted on the support seat 1 (203); and the movable frame 1 (205) and the movable frame 2 (210) are slidably mounted on the guide rail of the frame (101) at intervals.

9. A precision plastic parts injection molding device as claimed in claim 8, characterized in that: The support frame (202) is fixedly mounted on one side of the second moving frame (210); the second hydraulic cylinder (204) is fixedly mounted on the first moving frame (205); a connecting sleeve (206) is fixedly mounted on the piston rod of the second hydraulic cylinder (204); the connecting frame (207) is fixedly mounted on the piston rod of the first hydraulic cylinder (201); the first motor (209) is fixedly mounted on the second moving frame (210); a pulley (208) is coaxially fixedly mounted on the output shaft of the first motor (209); the second pulley (212) is rotatably mounted on the connecting frame (207); the pulley (208) and the second pulley (212) are connected via a belt (211); the connecting sleeve (206), the connecting frame (207), the second moving frame (210) and the second pulley (212) are all connected to an injection molding mechanism.

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