A smart three-color plastic injection mold

Abstract

This invention relates to the field of injection mold technology, specifically to an intelligent three-color plastic injection mold, comprising a protective shell, a fixing body connected to one side of the bottom of the protective shell, and a controller connected to one side of the fixing body; a rotating mechanism connected to the bottom of the protective shell; a pushing mechanism connected to the upper end face of the protective shell, and a damping mechanism provided on the upper part of the outer surface of the protective shell. Through the setting of a suction sleeve, the suction sleeve covers the upper port of the injection hole, fixing the injection molder at the injection hole port, preventing random shaking during plastic injection. The low pressure generated between the suction sleeve and the retaining ring ensures that the retaining ring is tightly attached to the flared bottom port, preventing the retaining ring from being loosely pressed and also preventing backflow of the injected plastic.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and specifically to an intelligent three-color plastic injection mold. Background Technology

[0002] A mold is a tool used to shape a blank into a part with a specific shape and size under the action of external force. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics, and other products. A mold generally consists of two parts: a moving mold and a fixed mold, which can be separated or joined. When separated, the part is removed; when joined, the blank is injected into the mold cavity to form the part.

[0003] Because existing technology only allows molds to produce the same color on a single item during injection molding, which is too limited, reduces functionality, and lowers cost-effectiveness. In particular, during injection molding, it is necessary to align the mold with the injection hole, but repeated alignment will produce errors. The resulting gaps will cause the injection plastic to leak out, resulting in waste, and will also contaminate the machine itself, increasing the workload of the workers.

[0004] To address the aforementioned problems, this invention proposes an intelligent three-color plastic injection mold. Summary of the Invention

[0005] (1) Technical problems to be solved

[0006] The purpose of this invention is to overcome the problems in the prior art, adapt to practical needs, and provide an intelligent three-color plastic injection mold to solve the above-mentioned technical problems.

[0007] (2) Technical solution

[0008] To achieve the objectives of this invention, the technical solution adopted by this invention is as follows: an intelligent three-color plastic injection mold, comprising a protective shell, a fixing body connected to one side of the bottom of the protective shell, and a controller connected to one side of the fixing body; a rotating mechanism connected to the bottom of the protective shell; a pushing mechanism connected to the upper surface of the protective shell, and a damping mechanism provided on the upper part of the outer surface of the protective shell.

[0009] Preferably, the rotating mechanism includes a motor fixedly connected to the inner bottom of the protective shell, the output end of the motor being connected to a rotating shaft, one end of the rotating shaft passing through a through hole in a fixed disk, the lower end face of the fixed disk being supported above the motor by a support rod, a mold block being fixedly connected to the top end of the rotating shaft, an outer ring plate being provided on the lower end face of the mold block, an annular track being slidably connected to the outer ring plate, the lower end face of the annular track being connected to the upper end face of the fixed disk, and a first transfer block, a second transfer block, and a third transfer block being evenly distributed on the outer ring face of the mold block, the spacing angle between the first transfer block, the second transfer block, and the third transfer block being 120 degrees, wherein the first transfer block is located at the upper part of the outer ring face of the mold block, the second transfer block is located at the middle part of the outer ring face of the mold block, and the third transfer block is located at the lower part of the outer ring face of the mold block.

[0010] Preferably, the end face of the first transfer block abuts against a first contact sensor, the first contact sensor (25) being slidably connected in a first slide groove opened on the receiving cavity, the receiving cavity being provided with a first slide groove, a second slide groove, and a third slide groove, the first slide groove being slidably connected to the first contact sensor, one end face of the first contact sensor being connected to a side wall of the first slide groove through a first spring body, the second slide groove being slidably connected to a second contact sensor, one end face of the second contact sensor being connected to a side wall of the second slide groove through a second spring body, the third slide groove being slidably connected to a third contact sensor, one end face of the third contact sensor being connected to a side wall of the third slide groove through a third spring body, wherein a wire hole is opened on one side wall of each of the first slide groove, the second slide groove, and the third slide groove.

[0011] Preferably, the upper surface of the mold block has a cylindrical groove, and a fixed rod is connected to the middle of the upper surface of the mold block. The upper surface of the mold block faces a closing block, and sliding rods are evenly distributed on the lower surface of the closing block. The sliding rods are slidably connected to the cylindrical groove. Damping blocks are evenly distributed on the outer ring surface of the closing block. There are three damping blocks, and the distance between the three damping blocks is 120 degrees. The position angle of the three damping blocks corresponds to that of the first transmission block, the second transmission block, and the third transmission block. The upper end of the fixed rod passes through the injection hole opened in the middle of the closing block. The upper end of the injection hole is flared.

[0012] Preferably, the pushing mechanism includes an injection molder, the upper port of which is inserted into the port of the injection hole, and a connecting sleeve is connected to the upper port of the injection molder. A retaining ring is fitted on the lower end of the injection molder. A suction sleeve is connected to the middle of the outer side of the injection molder. A first conveying pipe is fitted inside the connecting sleeve. A second conveying pipe and a third conveying pipe are connected to the lower end of the first conveying pipe. A first conveying device is connected to the upper end of the first conveying pipe. A second conveying device is connected to the upper end of the second conveying pipe. A third conveying device is connected to the upper end of the third conveying pipe. The lower ends of the third conveying device, the second conveying device, and the first conveying device are fixedly connected to the fixed disc (35).

[0013] Preferably, a hydraulic cylinder is connected to the middle of the lower end face of the fixed circular plate, and a push rod is connected to the output end of the hydraulic cylinder. A fixed long plate is connected to the lower end face of the push rod, and connecting rods are connected to both sides of the end face of the fixed long plate. The lower end faces of the two connecting rods are connected to the upper end face of the closing block. A limit rod is connected to the upper end face of the fixed long plate, and the upper end face of the limit rod passes through a limit hole opened inside the fixed circular plate.

[0014] Preferably, the lower end face of the fixed disc is evenly connected with a plurality of fixed rods, which surround the outside of the hydraulic cylinder. The lower end face of the fixed rods is connected with a rotating ring. The lower end face of the rotating ring is evenly provided with rotating grooves. There are several rotating grooves, and the rotating grooves are rotatably connected with rolling balls. The rotating ring is slidably connected with a rotating rail groove. The outer surface of the rolling ball is rotatably connected to the bottom of the rotating rail groove. The lower end face of the rotating rail groove is connected to the upper end face of the protective shell.

[0015] Preferably, the damping mechanism includes an opening on the upper outer side of the protective shell, a support plate connected to the bottom of the opening, a damping plate connected to the upper surface of the support plate via a fixed shaft, and a chamfered surface connected to one side of the damping plate via a third spring body, the chamfered surface being formed on one side wall of the opening.

[0016] Preferably, one side of the damping plate abuts against the outer surface of the damping block.

[0017] (3) Beneficial effects:

[0018] A. The suction sleeve design prevents random movement during injection molding. The low pressure generated between the suction sleeve and the retaining ring ensures the retaining ring adheres tightly to the flared bottom port, preventing insecure contact and backflow of the injection molded material. After the closing block opens upwards, the suction sleeve remains wrapped around the upper port of the injection hole as long as the retaining ring is not pulled outwards. This eliminates the need for repeated insertion into the injection hole, reducing a step and improving efficiency. It also eliminates the need for reciprocating alignment during injection molding, preventing errors and avoiding leakage of injection molded material due to gaps, thus avoiding waste and contamination of the machine itself, and reducing the workload for operators.

[0019] B. By setting up mold blocks, it is beneficial for the mold to color the items differently during injection molding, which can diversify the colors, improve functionality, and improve cost performance. The accuracy of injection molding can be improved by using the first contact sensor, the second contact sensor, and the third contact sensor.

[0020] C. By setting up the rolling ball, in order to prevent excessive friction between the rotating ring and the rotating rail groove, a rotating groove 362 and a rolling ball are set up so that the rolling ball rolls against the inner bottom of the rotating rail groove, avoiding excessive noise due to excessive friction and also avoiding damage to the rotating ring due to friction.

[0021] D. By setting up the damping block, after each rotation of the mold block, the damping block just touches one side of the damping plate, and the other side of the damping plate is pressed against the fourth spring body. Through the elastic force of the fourth spring body, the angle error of the mold block caused by the rotation not stopping can be effectively avoided, thus improving the accuracy. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an intelligent three-color plastic injection mold according to the present invention;

[0023] Figure 2 This is a schematic diagram of the mold block structure of an intelligent three-color plastic injection mold according to the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the first transfer block of an intelligent three-color plastic injection mold according to the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the third transfer block of an intelligent three-color plastic injection mold according to the present invention;

[0026] Figure 5 This is a partially enlarged view of the first contact sensor of an intelligent three-color plastic injection mold according to the present invention;

[0027] Figure 6 This is a partially enlarged view of the suction sleeve of an intelligent three-color plastic injection mold according to the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the rolling ball in an intelligent three-color plastic injection mold according to the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the first conveying pipe of an intelligent three-color plastic injection mold according to the present invention;

[0030] Figure 9 This is a partially enlarged view of the damping mechanism of an intelligent three-color plastic injection mold according to the present invention.

[0031] The attached figures are labeled as follows:

[0032] 1-Protective shell, 11-Fixed body, 12-Controller, 2-Rotating mechanism, 21-Motor, 22-Rotating shaft, 23-Fixed disc, 231-Through hole, 24-Mold block, 241-First transmission block, 242-Second transmission block, 243-Third transmission block, 244-Cylindrical groove, 245-Outer ring plate, 25-First contact sensor, 251-Receiving cavity, 252-First slide groove, 253-Second slide groove, 254-Third slide groove, 255-First spring body, 256-Second contact sensor, 257-Second spring body, 258-Third contact sensor, 259-Third spring body, 26-Closing block, 261-Sliding rod, 262-Damping block, 263-Injection molding 3-Pushing mechanism, 31-Injection molder, 311-Connecting sleeve, 312-Retaining ring, 32-Suction sleeve, 33-First conveying pipe, 331-Second conveying pipe, 332-Third conveying pipe, 34-First conveying device, 341-Second conveying device, 342-Third conveying device, 35-Fixed circular plate, 351-Hydraulic cylinder, 352-Push rod, 353-Fixed long plate, 354-Connecting rod, 355-Limiting rod, 36-Fixed rod, 361-Rotating ring, 362-Rotating groove, 363-Rolling ball, 364-Rotating rail groove, 4-Damping mechanism, 41-Opening, 42-Support plate, 43-Fixed shaft, 44-Damping plate, 45-Fourth spring body, 46-Chamfered surface. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] The following is in conjunction with the appendix Figure 1-9 The present invention is further illustrated by the embodiments:

[0035] In this embodiment, as Figure 1-9 As shown, an intelligent three-color plastic injection mold includes a protective shell 1. A fixing body 11 is connected to one side of the bottom of the protective shell 1, and a controller 12 is connected to one side of the fixing body 11. A rotating mechanism 2 is connected to the bottom of the protective shell 1. A pushing mechanism 3 is connected to the upper surface of the protective shell 1, and a damping mechanism 4 is provided on the upper part of the outer surface of the protective shell 1.

[0036] In this embodiment, the rotating mechanism 2 includes a motor 21 fixedly connected to the inner bottom of the protective shell 1. The output end of the motor 21 is connected to a rotating shaft 22. One end of the rotating shaft 22 passes through a through hole 231 on a fixed disk 23. The lower end face of the fixed disk 23 is supported above the motor 21 by a support rod 211. A mold block 24 is fixedly connected to the top end of the rotating shaft 22. An outer ring plate 245 is provided on the lower end face of the mold block 24. An annular track 232 is slidably connected to the outer ring plate 245. The lower end face of 32 is connected to the upper end face of the fixed plate 23. The outer ring surface of the mold block 24 is evenly connected with the first transfer block 241, the second transfer block 242, and the third transfer block 243. The spacing angle between the first transfer block 241, the second transfer block 242, and the third transfer block 243 is 120 degrees. The first transfer block 241 is located at the upper part of the outer ring surface of the mold block 24, the second transfer block 242 is located at the middle part of the outer ring surface of the mold block 24, and the third transfer block 243 is located at the lower part of the outer ring surface of the mold block 24. After the closing block 26 is attached to the mold block 24, the motor 21 is started to drive the rotating shaft 22 to rotate. The rotating shaft 22 drives the mold block 24 to rotate in a circular motion. The mold block 24 slides in the annular track 232 through the outer ring plate 245, ensuring stable rotation of the mold block and avoiding rotational deviation or swaying. The mold block 24 rotates only 180 degrees each time. If the first transmission block 241 rotates 180 degrees through the mold block 24, the first transmission block 241 will just come into contact with the first contact sensor 25. The first contact sensor 25 will slide under pressure in the first slide groove 252 and be pressed against the first spring body 255, preventing the first transmission block from causing the first contact sensor 241 to come into contact with the first contact sensor 25. The first contact sensor 25 will slide under pressure in the first slide groove 252 and be pressed against the first spring body 255, thus preventing the first transmission block from causing the first contact sensor 241 to come into contact with the first contact sensor 25. Excessive pressure on 241 damages the first contact sensor 25, and the pressure signal from the first contact sensor 25 is transmitted to the controller 12. Upon receiving the signal, the controller 12 activates the first conveying device 34 to transport the mixed injection plastic to the injection molding machine 31 through the first conveying pipe 33. The injection molding machine 31 then conveys the injection plastic into the injection hole 263, which in turn conveys the injection plastic between the closing block 26 and the mold block 24. The injection plastic is injected in three stages, and the proportion of the three injections can be quantitatively determined. For example, the first injection may be green with 1 / 3 of the material, the second may be yellow with 1 / 3 of the material, and the third may be red with 1 / 3 of the material. This allows for automatic injection of the plastic every 120 degrees of rotation, enabling the production of various colors for the product.

[0037] In this embodiment, the end face of the first transfer block 241 abuts against the first contact sensor 25. The first contact sensor 25 is slidably connected within the first slide groove 252 formed in the receiving cavity 251. The receiving cavity (251) is internally configured with the first slide groove 252, the second slide groove 253, and the third slide groove 254. The first slide groove 252 is slidably connected to the first contact sensor 25. One end face of the first contact sensor 25 is connected to one side wall of the first slide groove 252 via a first spring body 255. The second slide groove 253 is slidably connected to a second contact sensor 256. One end face of the second contact sensor 256 is connected to a side wall of the second slide groove 253 via a second spring body 257. The third slide groove 254 is slidably connected to a third contact sensor 258. One end face of the third contact sensor 258 is connected to a side wall of the third slide groove 254 via a third spring body 259. A wire through hole is provided on one side wall of the first slide groove 252, the second slide groove 253, and the third slide groove 254. After one-third of the green injection molding is completed, motor 21 is restarted, causing mold block 24 to rotate another 180 degrees. The second transfer block 242 then presses against the second contact sensor 256. The second contact sensor 256 slides into the second slide groove 253 under pressure and is pressed against the second spring body 257. The force signal from the second contact sensor 256 is transmitted to controller 12. Upon receiving the signal, controller 12 activates the second conveying device 341 to transport the yellow injection molding material to the injection molding machine 31 through the second conveying pipe 331. The injection molding machine 31 transports the yellow injection molding material into the injection hole 263, which then transports it between the closing block 26 and mold block 24, completing one-third of the yellow injection molding. Motor 21 is then restarted, causing mold block 24 to rotate another 180 degrees. The third transfer block 243 then contacts the third contact sensor 258, which is pressed against the second spring body 257. The internal sliding mechanism slides in the third slide groove 254 and is pressed against the third spring body 259. The pressure signal received by the third contact sensor 258 is transmitted to the controller 12. Upon receiving the signal, the controller 12 activates the third conveying device 342 to convey the red injection plastic to the injection molding machine 31 through the third conveying pipe 332. The injection molding machine 31 conveys the red injection plastic into the injection hole 263, which in turn conveys the red injection plastic between the closing block 26 and the mold block 24, completing 1 / 3 of the red injection plastic injection and completing the three-injection process. This allows the mold to color the item differently during injection molding, resulting in a variety of colors, improved functionality, and increased cost-effectiveness. The first contact sensor 25, the second contact sensor 256, and the third contact sensor 258 are used to improve the accuracy of injection molding.

[0038] In this embodiment, a cylindrical groove 244 is provided on the upper end face of the mold block 24, and a fixed rod is connected to the middle of the upper end face of the mold block 24. A closing block 26 is directly opposite the upper end face of the mold block 24. Sliding rods 261 are evenly distributed on the lower surface of the closing block 26. The sliding rods 261 are slidably connected to the cylindrical groove 244. Damping blocks 262 are evenly distributed on the outer ring surface of the closing block 26. There are three damping blocks 262, and the distance between the three damping blocks 262 is 120 degrees. The position angle of the three damping blocks 262 corresponds to that of the first transmission block 241, the second transmission block 242, and the third transmission block 243. The upper end of the fixed rod passes through the injection hole 263 opened in the middle of the closing block 26. The upper end of the injection hole 263 is flared. As the sequence continues downwards, the sliding rod 261 on the closing block 26 is inserted into the interior of the cylindrical groove 244, and the closing block 26 is stopped when it is in contact with the upper end face of the mold block 24. The hydraulic cylinder 351 stops, and the three damping blocks 262 are exactly on the same horizontal line as the damping plate 44. By sliding through the cylindrical groove 244 and the sliding rod 261, the closing block 26 is more precisely in contact with the mold block 24, avoiding error gaps.

[0039] In this embodiment, the pushing mechanism 3 includes an injection molding machine 31. The upper port of the injection molding machine 31 is inserted into the port of the injection hole 263, and a connecting sleeve 311 is connected to the upper port of the injection molding machine 31. A retaining ring 312 is fitted on the lower end of the injection molding machine 31. A suction sleeve 32 is connected to the middle of the outer side of the injection molding machine 31. A first conveying pipe 33 is fitted inside the connecting sleeve 311. A second conveying pipe 331 and a third conveying pipe 332 are connected to the lower ends of the first conveying pipe 33. A first conveying device 34 is connected to the upper end of the first conveying pipe 331. A second conveying device 341 is connected to the upper end of the second conveying pipe 331. A third conveying device 342 is connected to the upper end of the third conveying pipe 332. The lower ends of the third conveying device 342, the second conveying device 341, and the first conveying device 34 are fixedly connected to the fixed disc 35. After the closing block 26 is attached to the mold block 24, the injection molding machine 31 needs to be manually inserted into the port of the injection hole 263. The retaining ring 312 on the injection molding machine 31 is engaged with the flared bottom port at the upper end of the injection hole 263. The retaining ring 312 blocks the flared bottom port, which can effectively prevent air leakage from the injection hole 263 to the outside. The suction sleeve 32 covers the upper port of the injection hole 263 (the principle of the suction sleeve 32 is the same as that of the suction cup, using the space between the retaining ring 312 and the suction sleeve 32 to generate low pressure, so that the suction sleeve 32 tightly covers the upper end of the injection hole 263). The injection molding machine 31 is fixed at the injection hole 263 port to prevent it from shaking during injection. The low pressure generated between the suction sleeve 32 and the retaining ring 312 ensures that the retaining ring 312 is tightly attached to the flared bottom port, preventing the retaining ring 312 from not being securely engaged and preventing backflow of the injection plastic. After the closing block 26 is opened upwards, as long as the retaining ring 312 is not pulled outwards, the suction sleeve 32 will always cover the upper port of the injection hole 263. Therefore, it is not necessary to insert and remove the injection hole 263 back and forth, reducing a step and improving work efficiency. This is beneficial because it eliminates the need for reciprocating alignment during injection, preventing errors caused by gaps that could lead to leakage of the injection plastic and waste. It also prevents contamination of the machine itself and reduces the workload of the operators.

[0040] In this embodiment, a hydraulic cylinder 351 is connected to the middle of the lower end face of the fixed circular plate 35. A push rod 352 is connected to the output end of the hydraulic cylinder 351. A fixed long plate 353 is connected to the lower end face of the push rod 352. Connecting rods 354 are connected to both sides of the end face of the fixed long plate 353. The lower end faces of the two connecting rods 354 are connected to the upper end face of the closing block 26. Limiting rods 355 are connected to the upper end face of the fixed long plate 353. The upper end face of the limiting rods 355 passes through the limiting holes opened inside the fixed circular plate 35. First, various colored injection molding materials are distributed through the third conveying device 342, the second conveying device 341, and the first conveying device 34 to stir the individual colored injection molding materials. After stirring, the hydraulic cylinder 351 is activated to drive the push rod 352 to move downward. The push rod 352 simultaneously drives the fixed plate 353, the connecting rod 354, the closing block 26, and the limiting rod 355 to move downward. The limiting rod 355 moves downward along the limiting hole to ensure that the closing block 26 moves downward in a stable straight line and prevents deviation. As the closing block 26 moves downward, it slides inside the upper part of the protective shell 1. Moving downward in sequence, the injection hole 263 on the closing block 26 is first fitted onto the upper end of the fixed rod. Then, the sliding rod 261 on the closing block 26 is inserted into the interior of the cylindrical groove 244. The closing block 26 is held against the upper end surface of the mold block 24, and the hydraulic cylinder 351 is stopped. The three damping blocks 262 are exactly on the same horizontal line as the damping plate 44.

[0041] In this embodiment, a plurality of fixing rods 36 are evenly distributed around the outer ring of the lower end face of the fixed disc 35. The plurality of fixing rods 36 surround the outside of the hydraulic cylinder 351, and a rotating ring 361 is connected to the lower end face of the fixing rods 36. The lower end face of the rotating ring 361 is evenly provided with rotating grooves 362. There are several rotating grooves 362, and a rolling ball 363 is rotatably connected to the rotating groove 362. The rotating ring 361 is slidably connected to a rotating rail groove 364. The outer surface of the rolling ball 362 is rotatably connected to the bottom of the rotating rail groove 364, and the inner ring of the lower end face of the rotating rail groove 364 is connected to the upper end face of the protective shell 1. In this design, each rotation of the mold block 24 drives the closing block 26, connecting rod 354, fixed long plate 353, limiting rod 355, push rod 352, fixed circular plate 35, fixed rod 36, and rotating ring 361. The limiting rod 355 transmits the force output by the motor 21 to the fixed circular plate 35. The fixed circular plate 35 rotates inside the rotating track groove 364 through the rotating ring 361 under the force. In order to prevent excessive friction between the rotating ring 361 and the rotating track groove 364, a rotating groove 362 and a rolling ball 363 are provided. The rolling ball 363 rolls against the inner bottom of the rotating track groove 364, avoiding loud noise due to excessive friction and also avoiding damage to the rotating ring 361 due to friction.

[0042] In this embodiment, the damping mechanism 4 includes an opening 41 on the upper outer side of the protective shell 1. A support plate 42 is connected to the bottom of the opening 41. A damping plate 44 is connected to the upper surface of the support plate 42 via a fixed shaft 43. A chamfered surface 46 is connected to one side of the damping plate 44 via a fourth spring body 45. The chamfered surface 46 is formed on one side wall of the opening 41. After each rotation of the mold block 24, the damping block 262 abuts against one side of the damping plate 44, and the other side of the damping plate 44 is pressed against the fourth spring body 45. Through the elastic force of the fourth spring body 45, the angular error of the mold block 24 caused by the rotation not stopping can be effectively avoided, thus improving accuracy.

[0043] In this embodiment, one side of the damping plate 44 abuts against the outer surface of the damping block 262. This facilitates the generation of a damping effect.

[0044] Working principle:

[0045] Before injection molding, the hydraulic cylinder 351 is activated to drive the push rod 352, causing the closing block 26 to move downwards. The sliding rod 261 on the closing block 26 is first inserted into the cylindrical groove 244, and then the closing block 26 is made to fit against the upper surface of the mold block 24. Then, the motor 21 is activated to drive the rotating shaft 22 to rotate. The rotating shaft 22 drives the mold block 24 to rotate in a circle. The rotating shaft 22 rotates only 180 degrees each time. After the mold block 24 rotates 180 degrees, the first transmission block 241 just touches the first contact sensor 25. The first contact sensor 25 is pressed and slides on the first slide groove 252 and is squeezed against the first spring body 255. The pressure signal of the first contact sensor 25 is transmitted to the controller 12. After receiving the signal, the controller 12 activates the first conveying device 34 to transport the mixed injection plastic to the closing block 26 and the mold block 24 through the first conveying pipe 33 and the injection molding machine 31, thus completing the first injection of green injection plastic.

[0046] After one-third of the green injection molding is completed, during the second injection of yellow injection molding, motor 21 is restarted to rotate mold block 24 180 degrees. The second transfer block 242 then presses against the second contact sensor 256. The second contact sensor 256 slides into the second slide groove 253 under force and presses against the second spring body 257. The force signal from the second contact sensor 256 is transmitted to controller 12. Upon receiving the signal, controller 12 starts the second conveying device 341 to transport the yellow injection molding material between closing block 26 and mold block 24 through the second conveying pipe 331 and injection hole 263. This completes one-third of the second injection molding of yellow injection molding. Motor 21 is then started sequentially. Continue rotating the mold block 24 by 180 degrees until the third transmission block 243 comes into contact with the third contact sensor 258. The third contact sensor 258 slides inward into the third slide groove 254 and is pressed against the third spring body 259. The pressure signal from the third contact sensor 258 is transmitted to the controller 12. Upon receiving the signal, the controller 12 starts the third conveying device 342 to convey the red injection plastic through the third conveying pipe 332 and the injection hole 263 to the space between the closing block 26 and the mold block 24, completing the remaining 1 / 3 of the red injection plastic injection. This completes the three-injection process. During the injection process, the outer surface of the item can be colored differently, and the colors can be diversified.

[0047] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of the present invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A smart three-color plastic injection mold, comprising a protective shell (1), characterized in that, A fixing body (11) is connected to one side of the bottom of the protective shell (1), and a controller (12) is connected to one side of the fixing body (11); a rotating mechanism (2) is connected to the bottom of the protective shell (1); a pushing mechanism (3) is connected to the upper surface of the protective shell (1), and a damping mechanism (4) is provided on the upper part of the outer surface of the protective shell (1); the rotating mechanism (2) includes a motor (21) fixedly connected to the bottom of the protective shell (1), the output end of the motor (21) is connected to a rotating shaft (22), one end of the rotating shaft (22) passes through a through hole (231) on a fixed plate (23), the lower end of the fixed plate (23) is supported above the motor (21) by a support rod (211), and a mold block (2) is fixedly connected to the top of the rotating shaft (22). 4) The lower end face of the mold block (24) is provided with an outer ring plate (245), and the outer ring plate (245) is slidably connected to an annular track (232). The lower end face of the annular track (232) is connected to the upper end face of the fixed plate (23). The outer ring face of the mold block (24) is evenly connected with a first transfer block (241), a second transfer block (242), and a third transfer block (243). The spacing angle between the first transfer block (241), the second transfer block (242), and the third transfer block (243) is 120 degrees. The first transfer block (241) is located at the upper part of the outer ring face of the mold block (24), the second transfer block (242) is located at the middle part of the outer ring face of the mold block (24), and the third transfer block (243) is located at the lower part of the outer ring face of the mold block (24).

2. The intelligent three-color plastic injection mold as described in claim 1, characterized in that: The first transfer block (241) has its end face abutting against a first contact sensor (25). The first contact sensor (25) is slidably connected in a first slide groove (252) opened in the receiving cavity (251). The receiving cavity (251) is internally configured with a first slide groove (252), a second slide groove (253), and a third slide groove (254). The first slide groove (252) is slidably connected to the first contact sensor (25). One end face of the first contact sensor (25) is connected to one side wall of the first slide groove (252) through a first spring body (255). The slide groove (253) is slidably connected to the second contact sensor (256). One end face of the second contact sensor (256) is connected to one side wall of the second slide groove (253) through the second spring body (257). The third slide groove (254) is slidably connected to the third contact sensor (258). One end face of the third contact sensor (258) is connected to one side wall of the third slide groove (254) through the third spring body (259). The first slide groove (252), the second slide groove (253), and the third slide groove (254) are all provided with wire holes on one side wall.

3. The intelligent three-color plastic injection mold as described in claim 1, characterized in that: The upper end face of the mold block (24) is provided with a cylindrical groove (244), and a fixed rod is connected in the middle of the upper end face of the mold block (24). The upper end face of the mold block (24) is directly opposite a closing block (26). Sliding rods (261) are evenly distributed on the lower surface of the closing block (26). The sliding rods (261) are slidably connected to the cylindrical groove (244). Damping blocks (262) are evenly distributed on the outer ring surface of the closing block (26). There are three damping blocks (262). The distance angle between the three damping blocks (262) is 120 degrees. The position angle of the three damping blocks (262) corresponds to that of the first transmission block (241), the second transmission block (242), and the third transmission block (243). The upper end of the fixed rod passes through the injection hole (263) opened in the middle of the closing block (26). The upper end of the injection hole (263) is horn-shaped.

4. The intelligent three-color plastic injection mold as described in claim 3, characterized in that: The pushing mechanism (3) includes an injection molder (31), the upper port of which is inserted into the port of the injection hole (263), and a connecting sleeve (311) is connected to the upper port of the injection molder (31). A retaining ring (312) is fitted on the lower end of the injection molder (31). A suction sleeve (32) is connected to the middle of the outer side of the injection molder (31). A first conveying pipe (33) is fitted inside the connecting sleeve (311). A second conveying pipe (331) and a third conveying pipe (332) are connected to the lower end of the first conveying pipe (33). A first conveying device (34) is connected to the upper end of the first conveying pipe (33). A second conveying device (341) is connected to the upper end of the second conveying pipe (331). A third conveying device (342) is connected to the upper end of the third conveying pipe (332). The lower ends of the third conveying device (342), the second conveying device (341), and the first conveying device (34) are fixedly connected to the fixed circular plate (35).

5. The intelligent three-color plastic injection mold as described in claim 4, characterized in that: A hydraulic cylinder (351) is connected to the middle of the lower end face of the fixed circular plate (35). A push rod (352) is connected to the output end of the hydraulic cylinder (351). A fixed long plate (353) is connected to the lower end face of the push rod (352). Connecting rods (354) are connected to both sides of the lower end face of the fixed long plate (353). The lower end faces of the two connecting rods (354) are connected to the upper end face of the closing block (26). Limiting rods (355) are connected to the upper end face of the fixed long plate (353). The upper end face of the limiting rods (355) passes through the limiting hole opened inside the fixed circular plate (35).

6. The intelligent three-color plastic injection mold as described in claim 5, characterized in that: The lower end face of the fixed circular plate (35) is evenly connected with a plurality of fixed rods (36), which surround the outside of the hydraulic cylinder (351). The lower end face of the fixed rods (36) is connected with a rotating ring (361). The lower end face of the rotating ring (361) is evenly provided with rotating grooves (362). There are several rotating grooves (362). The rotating grooves (362) are rotatably connected with rolling balls (363). The rotating ring (361) is slidably connected with a rotating rail groove (364). The outer surface of the rolling ball (363) is rotatably connected to the bottom of the rotating rail groove (364). The inner ring of the lower end face of the rotating rail groove (364) is connected to the upper end face of the protective shell (1).

7. The intelligent three-color plastic injection mold as described in claim 1, characterized in that: The damping mechanism (4) includes an opening (41) which is located on the upper outer side of the protective shell (1), and a support plate (42) is connected to the bottom of the opening (41). A damping plate (44) is connected to the upper end face of the support plate (42) via a fixed shaft. A chamfered surface is connected to one side of the damping plate (44) via a fourth spring body (45). The chamfered surface is formed on one side wall of the opening (41).

8. The intelligent three-color plastic injection mold as described in claim 7, characterized in that: The damping plate (44) abuts against the outer surface of the damping block (262) on one side.

Images