Miniature injection molding machine based on 3D printing

Abstract

The utility model relates to the technical field of 3D printing, in particular to a miniature injection molding machine based on 3D printing, which comprises a workbench, a material storage box is fixedly arranged in the workbench, a base plate is slidably connected to the bottom end in the material storage box, a plurality of molds are clamped and connected to the top end of the base plate, a lifting assembly is arranged at the bottom end of the base plate, and supports are arranged on two sides of the workbench; through structures such as a first reciprocating motor, a gear, a rack, a bottom plate, a sliding strip, a first sliding groove, a second reciprocating motor, a connecting lead screw, a lead screw nut, a movable plate, an air cylinder, a movable block, a third sliding groove, a linkage rod, a limiting plate and a fourth sliding groove, a plurality of molds can be lifted through upward movement of a base plate; and then the clamped single mold moves in the horizontal direction through rotation of the connecting lead screw again, so that the mold can be conveniently replaced according to 3D printing pieces of different specifications, meanwhile, the lifted mold is conveniently carried, and automatic feeding of the micro injection molding machine is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a micro injection molding machine based on 3D printing. Background Art

[0002] In recent years, with the increasing demand for micro plastic parts in my country, the development of micro injection molding technology is also in full swing. In order to achieve greater economic benefits and corporate competitiveness, all walks of life are working hard to develop micro mold manufacturing; nowadays, there is little research on micro injection molds for computer case TH-3 panel buttons in China, and there are also some problems in the opening and closing of injection molds, such as unreasonable matching between the molding surface of the plastic part and the mold, resulting in damage to the plastic product; poor cooling effect of the product; poor sealing of the mold, etc.

[0003] After checking the public (announcement) number: CN202223164831.1 discloses an injection molding machine that is easy to repair. This technology discloses "including an injection molding mechanism, the injection molding mechanism includes an injection molding tube for injection molding, the injection molding tube end of the injection molding mechanism is connected to a fixed mold mounting plate, the four corners of the fixed mold mounting plate are slidably connected to a slide rod, the end of the slide rod away from the fixed mold mounting plate is slidably connected to a movable mold mounting plate, and both sides of the fixed mold mounting plate are detachably connected to the connecting plate. The utility model has the following advantages: the fixed mold mounting plate of the injection molding machine is plugged in by the plug blocks on both sides and limited at the limit slot of the fixed mold mounting plate. When the equipment is repaired and the fixed mold mounting plate is replaced, it only needs to be disassembled by the connecting bolts on both sides. The disassembly and assembly are very convenient, which improves the maintenance efficiency of the injection molding machine.

[0004] When using existing 3D printing micro injection molding machines, the finished products produced by 3D printing have different sizes and specifications. When traditional injection molding machines are used to perform injection molding of various materials, workers are required to move the molds up and down. The steps are cumbersome, which greatly increases the labor force of the workers. At the same time, there is a situation in which the molds are prone to falling and causing personal injury during the loading and unloading process.

[0005] In order to solve the above problems, a micro injection molding machine based on 3D printing is proposed in this application. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a micro injection molding machine based on 3D printing, which can realize autonomous loading and effectively prevent personnel injuries during operation.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a micro injection molding machine based on 3D printing, comprising a workbench, a material storage box is fixedly arranged inside the workbench, a pad is slidably connected to the bottom end of the material storage box, a plurality of molds are snap-connected to the top end of the pad, a lifting assembly is arranged at the bottom end of the pad, brackets are arranged on both sides of the workbench, a top plate is fixedly arranged between the two brackets, a moving assembly is arranged at the bottom end of the front side of the top plate, connecting rods are fixedly arranged on both sides of the top plate, and a thermoplastic bin is fixedly arranged between the two connecting rods;

[0008] The lifting assembly includes a first reciprocating motor, a gear, a base plate, a plurality of racks, two slide bars and two first slide grooves. The first reciprocating motor is fixedly arranged on the inner wall of the storage box, and the transmission shaft of the first reciprocating motor is fixedly connected with a gear. The base plate is fixedly arranged in the middle of the bottom end of the pad plate, and a plurality of racks are fixedly arranged on one side of the base plate, and the plurality of racks are meshed with the gears. Slide bars are fixedly arranged on both sides of the base plate, and the two first slide grooves are both opened on the inner wall of the storage box. The two first slide grooves are respectively slidably connected with the two slide bars, and the gear is driven to rotate by starting the first reciprocating motor. Since the plurality of racks are meshed with the gears, the base plate is driven to move upward, and at the same time, the two slide bars move upward along the inner walls of the two first slide grooves respectively, and then the plurality of molds can be lifted by moving the pad plate upward.

[0009] As a preferred embodiment of the micro injection molding machine based on 3D printing of the utility model, the moving component includes a second slide groove, a movable plate, a connecting screw, a second reciprocating motor, a screw nut and a frame, the second slide groove is opened on the inner wall of the top front end of the top plate, the inner wall of the second slide groove is slidably connected with the movable plate, the interior of the second slide groove is rotatably connected with the connecting screw through a bearing, the second reciprocating motor is fixedly arranged on the back side of the top plate, the transmission shaft of the second reciprocating motor is fixedly connected to one end of the connecting screw, the inner wall of the movable plate is fixedly provided with a screw nut threadedly connected to the connecting screw, the bottom end of the movable plate is fixedly provided with a frame, the second reciprocating motor is started to drive the connecting screw to rotate, and at this time the movable plate is caused to slide along the inner wall of the second slide groove through the screw nut.

[0010] As a preferred embodiment of the micro injection molding machine based on 3D printing of the utility model, a cylinder is fixedly provided in the middle part of the bottom end of the movable plate, the piston rod of the cylinder is fixedly connected with the movable block, the inner wall of the middle part of the frame is provided with a third slide groove, the third slide groove is slidably connected with the movable block, guide plates are fixedly provided on both sides of the frame, the inner walls of the two guide plates are provided with a fourth slide groove, the inner walls of the two fourth slide grooves are slidably connected with limit plates, the piston rod of the cylinder is contracted to make the movable block slide upward along the inner wall of the third slide groove, at this time, the two linkage rods rotate to make the two limit plates slide relative to each other along the two fourth slide grooves respectively, and when the two clamping plates are respectively clamped into the inner walls of the two clamps at the top of the required mold, the two limit plates clamp the required mold.

[0011] As a preferred embodiment of the micro injection molding machine based on 3D printing of the utility model, a clamp is fixedly provided on one side of the two limiting plates, and clamps are fixedly provided on both sides of the top of several molds, and several clamps are matched with the two clamps, and the two clamps are clamped into two of the clamps to facilitate clamping and limiting the required mold.

[0012] As a preferred embodiment of the micro injection molding machine based on 3D printing of the utility model, a driving motor is fixedly provided on one side of the thermoplastic bin, a transmission shaft of the driving motor is fixedly connected to a stirring shaft, a stirring roller is fixedly provided on the surface of the stirring shaft, a screen is fixedly provided on the inner wall of one side of the thermoplastic bin, and a plurality of equidistantly arranged heating tubes are fixedly provided on the other side of the thermoplastic bin. After the raw material is hot-melted, it flows into the mold required for processing. At the same time, the filter can block the un-hot-melted raw material, thereby improving the molding quality of the micro injection molding machine.

[0013] As a preferred embodiment of the micro injection molding machine based on 3D printing of the utility model, a linkage rod is hinged between the movable block and the two limit plates.

[0014] As a preferred embodiment of the micro injection molding machine based on 3D printing of the utility model, a switch panel is fixedly provided on the surface of the workbench, and the surfaces of the switch panel are respectively provided with a first reciprocating motor switch, a second reciprocating motor switch, a cylinder switch, a drive motor switch and a heating tube switch, and the first reciprocating motor, the second reciprocating motor, the cylinder, the drive motor and a plurality of heating tubes are electrically connected to the power supply through the first reciprocating motor switch, the second reciprocating motor switch, the cylinder switch, the drive motor switch and the heating tube switch.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. On this basis, the first reciprocating motor, gear, rack, bottom plate, slide bar and first slide slot are added, and then several molds can be lifted by moving the pad up, and then the second reciprocating motor, connecting screw, screw nut, movable plate, cylinder, movable block, third slide slot, linkage rod, limit plate and fourth slide slot are used. After the card plate is respectively inserted into the inner wall of the two clamps at the top of the required mold, the two limit plates clamp the required mold. At this time, the clamped single mold is moved in the horizontal direction by rotating the connecting screw again, so that the mold can be conveniently replaced according to the 3D printed parts of different specifications, and it is convenient to carry the lifted mold, so as to realize the autonomous loading of the micro injection molding machine;

[0017] 2. At the same time, on this basis, a driving motor, a stirring shaft, a stirring roller and other structures are added to heat and mix the injection molding materials in the thermoplastic chamber. After the raw materials are hot-melted, they flow into the mold required for processing. At the same time, the filter can block the un-hot-melted raw materials, thereby improving the molding quality of the micro injection molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the thermoplastic bin of the utility model;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the material storage box of the utility model;

[0023] Figure 5 For this utility model Figure 2 A is an enlarged structural diagram of FIG.

[0024] In the figure:

[0025] 1. Workbench; 2. Storage box; 3. Pad; 5. Bracket; 6. Top plate; 7. Moving assembly; 8. Connecting rod; 9. Thermoplastic bin; 10. Card plate; 11. Clamp; 12. Driving motor; 13. Stirring shaft; 14. Stirring roller; 15. Screen; 16. Heating tube; 17. Linkage rod; 18. Switch panel; 19. Mould; 41. First reciprocating motor; 42. Gear; 43. Bottom plate; 44. Rack; 45. Slide; 46. First slide; 71. Second slide; 72. Movable plate; 73. Connecting screw; 74. Second reciprocating motor; 75. Screw nut; 76. Frame; 761. Cylinder; 762. Movable block; 763. Third slide; 764. Guide plate; 765. Fourth slide; 766. Limit plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] like Figure 1-Figure 5 As shown;

[0029] The micro injection molding machine based on 3D printing includes a workbench 1, a material storage box 2 is fixedly provided inside the workbench 1, a pad 3 is slidably connected to the bottom end of the material storage box 2, a plurality of molds 19 are snap-connected to the top of the pad 3, a lifting component 4 is provided at the bottom end of the pad 3, brackets 5 are provided on both sides of the workbench 1, a top plate 6 is fixedly provided between the two brackets 5, a moving component 7 is provided at the bottom end of the front side of the top plate 6, connecting rods 8 are fixedly provided on both sides of the top plate 6, and a thermoplastic bin 9 is fixedly provided between the two connecting rods 8.

[0030] In this embodiment: after checking the public (announcement) number: CN202223164831.1, an injection molding machine that is easy to repair is disclosed. This technology discloses "including an injection molding mechanism, the injection molding mechanism includes an injection molding tube for injection molding, the injection molding tube end of the injection molding mechanism is connected to a fixed mold mounting plate, the four corners of the fixed mold mounting plate are slidably connected with a slide rod, the end of the slide rod away from the fixed mold mounting plate is slidably connected with a movable mold mounting plate, and both sides of the fixed mold mounting plate are detachably connected with a connecting plate. The utility model has the following advantages: the fixed mold mounting plate of the injection molding machine is plugged in by the plug blocks on both sides, and is limited at the limit slot of the fixed mold mounting plate. When the equipment is repaired and the fixed mold mounting plate is replaced, it only needs to be disassembled by the connecting bolts on both sides, and the disassembly and assembly are very convenient, which improves the maintenance efficiency of the injection molding machine. ";

[0031] When some 3D printing micro injection molding machines are in use, due to the different sizes and specifications of the finished products made by 3D printing, traditional injection molding machines require workers to move the molds up and down when performing injection molding of multiple materials. The steps are cumbersome, which greatly increases the labor force of the workers. At the same time, there is a situation where the molds are prone to falling and causing personal injury during the loading and unloading process.

[0032] According to the above content, in order to save the labor of the staff and realize the autonomous loading of the mold, it also includes a lifting component 4, which includes a first reciprocating motor 41, a gear 42, a base plate 43, a plurality of racks 44, two slides 45 and two first slide grooves 46. The first reciprocating motor 41 is fixedly arranged on the inner wall of the storage box 2, and the transmission shaft of the first reciprocating motor 41 is fixedly connected with the gear 42. The base plate 43 is fixedly arranged in the middle part of the bottom end of the pad 3. A plurality of racks 44 are fixedly arranged on one side of the base plate 43, and the plurality of racks 44 are meshed with the gear 42. Slides 45 are fixedly arranged on both sides of the base plate 43. The two first slide grooves 46 are both opened on the inner wall of the storage box 2, and the two first slide grooves 46 are respectively slidably connected with the two slides 45.

[0033] In the present embodiment: the first reciprocating motor 41 is used to start the gear 42 to rotate, and since a plurality of racks 44 are meshedly connected with the gear 42, the bottom plate 43 is driven to move upward, and at the same time, the two slide bars 45 move upward along the inner walls of the two first slide grooves 46 respectively, and then the pad 3 can be moved upward to lift a plurality of molds 19.

[0034] In an optional embodiment: the moving assembly 7 includes a second slide groove 71, a movable plate 72, a connecting screw 73, a second reciprocating motor 74, a screw nut 75 and a frame 76. The second slide groove 71 is opened on the inner wall of the top front end of the top plate 6. The inner wall of the second slide groove 71 is slidably connected with the movable plate 72. The interior of the second slide groove 71 is rotatably connected with the connecting screw 73 through a bearing. The second reciprocating motor 74 is fixedly arranged on the back of the top plate 6. The transmission shaft of the second reciprocating motor 74 is fixedly connected to one end of the connecting screw 73. The inner wall of the movable plate 72 is fixedly provided with a screw nut 75 threadedly connected to the connecting screw 73. The bottom end of the movable plate 72 is fixedly provided with a frame 76.

[0035] A cylinder 761 is fixedly provided in the middle of the bottom end of the movable plate 72, and a piston rod of the cylinder 761 is fixedly connected to a movable block 762. A third slide groove 763 is provided on the inner wall of the middle part of the frame 76, and the third slide groove 763 is slidably connected to the movable block 762. Guide plates 764 are fixedly provided on both sides of the frame 76, and fourth slide grooves 765 are provided on the inner walls of the two guide plates 764, and the inner walls of the two fourth slide grooves 765 are slidably connected to limit plates 766.

[0036] A clamping plate 10 is fixedly provided on one side of the two limit plates 766, and clamps 11 are fixedly provided on both sides of the top of the plurality of molds 19, and the plurality of clamps 11 are matched with the two clamping plates 10;

[0037] A linkage rod 17 is hinged between the movable block 762 and the two limit plates 766 .

[0038] In this embodiment: the second reciprocating motor 74 is started to drive the connecting screw 73 to rotate, and at this time the movable plate 72 is slid along the inner wall of the second slide groove 71 through the screw nut 75. When the frame 76 moves to the top of the required mold 19, the piston rod of the cylinder 761 contracts to make the movable block 762 slide upward along the inner wall of the third slide groove 763. At this time, the two linkage rods 17 rotate to make the two limit plates 766 slide relative to each other along the two fourth slide grooves 765. When the two clamping plates 10 are respectively clamped into the inner walls of the two clamps 11 at the top of the required mold 19, the two limit plates 766 clamp the required mold 19. At this time, the clamped single mold 19 is moved in the horizontal direction by rotating the connecting screw 73 again, so that the required mold 19 can be transported.

[0039] In an optional embodiment: a driving motor 12 is fixedly provided on one side of the thermoplastic bin 9, a transmission shaft of the driving motor 12 is fixedly connected to a stirring shaft 13, a stirring roller 14 is fixedly provided on the surface of the stirring shaft 13, a screen 15 is fixedly provided on the inner wall of one side of the thermoplastic bin 9, and a plurality of equidistantly arranged heating tubes 16 are fixedly provided on the other side of the thermoplastic bin 9.

[0040] In this embodiment, the driving motor 12 is started to drive the stirring shaft 13 and the stirring roller 14 to rotate, thereby heating and mixing the injection molding raw materials in the thermoplastic chamber 9. After the raw materials are hot-melted, they flow into the mold 19 required for processing. At the same time, the filter screen can block the un-hot-melted raw materials.

[0041] In an optional embodiment: a switch panel 18 is fixedly provided on the surface of the workbench 1, and a first reciprocating motor switch, a second reciprocating motor switch, a cylinder switch, a drive motor switch and a heating tube switch are respectively provided on the surface of the switch panel 18. The first reciprocating motor 41, the second reciprocating motor 74, the cylinder 761, the drive motor 12 and several heating tubes 16 are electrically connected to the power supply through the first reciprocating motor switch, the second reciprocating motor switch, the cylinder switch, the drive motor switch and the heating tube switch.

[0042] The working principle and use process of the utility model are as follows: first, molds 19 of various specifications are sequentially engaged and placed on the top of the pad 3. When the mold needs to be replaced according to the size of the 3D printed part to be injected, the first reciprocating motor 41 is started to drive the gear 42 to rotate. Since several racks 44 are meshed and connected with the gear 42, the bottom plate 43 is driven to move upward. At the same time, the two slide bars 45 are respectively moved up along the inner walls of the two first slide grooves 46, and then the several molds 19 can be lifted by moving the pad 3 upward. Then, the second reciprocating motor 74 is started to drive the connecting screw 73 to rotate. At this time, the movable plate 72 is made to slide along the inner wall of the second slide groove 71 through the screw nut 75. When the frame 76 moves to the top of the mold 19 to be used, the piston rod of the cylinder 761 contracts to make the movable block 762 slide along the inner wall of the third slide groove 763. Slide upward, at this time, the two linkage rods 17 rotate to make the two limit plates 766 slide relatively along the two fourth slide grooves 765 respectively, and when the two clamping plates 10 are respectively clamped into the inner walls of the two clamps 11 at the top of the required mold 19, the two limit plates 766 clamp the required mold 19. At this time, the clamped single mold 19 is moved horizontally by rotating the connecting screw 73 again, so that it is transported to the bottom of the discharge end of the thermoplastic bin 9, and then the raw materials are poured into the interior of the thermoplastic bin 9 and the heating tube switch and the drive motor switch are turned on. The drive motor 12 starts to drive the stirring shaft 13 and the stirring roller 14 to rotate, thereby heating and mixing the injection molding raw materials in the thermoplastic bin 9. After the raw materials are hot-melted, they flow into the mold 19 required for processing. At the same time, the filter can block the un-hot-melted raw materials, thereby improving the molding quality of the micro injection molding machine.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A micro injection molding machine based on 3D printing, comprising a workbench (1), characterized in that: A material storage box (2) is fixedly provided inside the workbench (1), a pad (3) is slidably connected to the bottom end of the material storage box (2), a plurality of molds (19) are snap-connected to the top end of the pad (3), a lifting assembly (4) is provided at the bottom end of the pad (3), brackets (5) are provided on both sides of the workbench (1), a top plate (6) is fixedly provided between the two brackets (5), a moving assembly (7) is provided at the bottom end of the front side of the top plate (6), connecting rods (8) are fixedly provided on both sides of the top plate (6), and a thermoplastic bin (9) is fixedly provided between the two connecting rods (8); The lifting assembly (4) comprises a first reciprocating motor (41), a gear (42), a base plate (43), a plurality of racks (44), two slide bars (45) and two first slide grooves (46), wherein the first reciprocating motor (41) is fixedly arranged on the inner wall of the storage box (2), the transmission shaft of the first reciprocating motor (41) is fixedly connected with the gear (42), the base plate (43) is fixedly arranged at the middle part of the bottom end of the pad (3), a plurality of racks (44) are fixedly arranged on one side of the base plate (43), and the plurality of racks (44) are meshedly connected with the gear (42), slide bars (45) are fixedly arranged on both sides of the base plate (43), and the two first slide grooves (46) are opened on the inner wall of the storage box (2), and the two first slide grooves (46) are respectively slidably connected with the two slide bars (45).

2. The micro injection molding machine based on 3D printing according to claim 1, characterized in that: The moving assembly (7) comprises a second slide groove (71), a movable plate (72), a connecting screw (73), a second reciprocating motor (74), a screw nut (75) and a frame (76); the second slide groove (71) is arranged on the inner wall at the top of the front face of the top plate (6); the inner wall of the second slide groove (71) is slidably connected with the movable plate (72); the interior of the second slide groove (71) is rotatably connected with the connecting screw (73) through a bearing; the second reciprocating motor (74) is fixedly arranged on the back of the top plate (6); the transmission shaft of the second reciprocating motor (74) is fixedly connected to one end of the connecting screw (73); the inner wall of the movable plate (72) is fixedly provided with a screw nut (75) threadedly connected to the connecting screw (73); and the bottom end of the movable plate (72) is fixedly provided with a frame (76).

3. The micro injection molding machine based on 3D printing according to claim 2, characterized in that: A cylinder (761) is fixedly provided in the middle of the bottom end of the movable plate (72), and the piston rod of the cylinder (761) is fixedly connected to the movable block (762). A third sliding groove (763) is provided on the inner wall of the middle part of the frame (76), and the third sliding groove (763) is slidably connected to the movable block (762). Guide plates (764) are fixedly provided on both sides of the frame (76), and the inner walls of the two guide plates (764) are provided with fourth sliding grooves (765), and the inner walls of the two fourth sliding grooves (765) are slidably connected to the limiting plates (766).

4. The micro injection molding machine based on 3D printing according to claim 3, characterized in that: A clamping plate (10) is fixedly provided on one side of the two limit plates (766), and clamps (11) are fixedly provided on both sides of the top ends of a plurality of the molds (19), and the plurality of clamps (11) are matched with the two clamping plates (10).

5. The micro injection molding machine based on 3D printing according to claim 3, characterized in that: A driving motor (12) is fixedly provided on one side of the thermoplastic bin (9), a transmission shaft of the driving motor (12) is fixedly connected to a stirring shaft (13), a stirring roller (14) is fixedly provided on the surface of the stirring shaft (13), a screen (15) is fixedly provided on the inner wall of one side of the thermoplastic bin (9), and a plurality of equidistantly arranged heating tubes (16) are fixedly provided on the other side of the thermoplastic bin (9).

Images