Injection molding machine mold opening device and injection molding machine comprising same

Abstract

The invention relates to the technical field of injection molding machines, and particularly discloses an injection molding machine mold opening device and an injection molding machine comprising the same, the injection molding machine mold opening device comprises a supporting platform, the top of the supporting platform is fixedly connected with a protective cover, the protective cover is internally provided with a mold opening and closing assembly, and the mold opening and closing assembly comprises a mold opening and closing mechanism and a discharging mechanism which are arranged in the protective cover; the mold opening and closing mechanism comprises a movable mold plate and a fixed mold plate; during injection molding, the movable mold plate slides in the guide seat along the guide rod to push the side molds on the two sides to move oppositely and complete butt joint, then the movable mold plate continuously moves to drive the side molds to be matched with the fixed mold plate to form a complete mold cavity, the injection molding requirement of a hollow product is met, after the product is molded, the movable mold plate and the side molds are synchronously reset, and when the side molds are separated, the movable mold plate is separated from the fixed mold plate. The supporting plate drives the clamping mechanism to move to the bottom of the side die, and after the side die is completely separated, a product falls on the side die and naturally slides down along with the movement of the side die, so that die opening blanking is more conveniently realized, the collision risk of the product is reduced, and the blanking quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to an injection molding machine mold opening device and an injection molding machine containing the device. Background Art

[0002] As the core equipment of plastic molding, the injection molding machine can transform thermoplastic or thermosetting plastics into various plastic products through plastic molding molds. During the injection molding process, the screw pushes the plasticized molten plastic into the closed mold cavity. After the plastic is solidified and shaped in the mold cavity, the injection molding machine drive mechanism drives the movable template to move relative to the fixed template to open the mold. When the mold is opened to the predetermined position, the ejection mechanism ejects the molded product from the mold cavity.

[0003] In the production process of injection molded hollow products, it is often necessary to rely on the ejection structure and the robot to complete the demoulding operation of the product. However, in the traditional collaborative operation mode, the timing of the ejection and the robot action is difficult to synchronize accurately. Once the timing of ejection and grasping is not properly coordinated, the product is very likely to fall or collide during the transfer process, which will not only damage the appearance of the product and reduce the yield rate, but also cause the injection molding machine to be unable to enter the next production cycle in time due to the slow removal speed, seriously restricting the efficiency of injection molding work.

[0004] Therefore, it is necessary to provide a mold opening device for an injection molding machine and an injection molding machine containing the device, in order to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a mold opening device for an injection molding machine and an injection molding machine containing the device, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A mold opening device for an injection molding machine comprises a support platform, a protective cover is fixedly connected to the top of the support platform, a mold opening and closing assembly is arranged inside the protective cover, and the mold opening and closing assembly comprises a mold opening and closing mechanism and a material discharge mechanism arranged inside the protective cover;

[0008] The mold opening and closing mechanism comprises a movable mold plate and a fixed mold plate, wherein the movable mold plate is fixedly connected to the top of the support platform, and the movable mold plate is slidably connected to the top of the support platform through a slide rail, and side molds are symmetrically arranged between the movable mold plate and the fixed mold plate, and a guide seat is fixedly connected to the side away from the side mold, and two guide bars are fixedly connected to the opposite side of the movable mold plate and the fixed mold plate, respectively, and the guide bars are slidably connected to the inside of the guide seat, and a guide rod is symmetrically fixed to one end of the guide bar located in the guide seat, and the guide rod is slidably connected to the inside of the guide seat;

[0009] The unloading mechanism includes a support plate and a dual-axis motor, a slider is symmetrically and slidably connected inside the support platform, the output shafts of the dual-axis motor are respectively fixedly connected to screw rods through couplings, a spiral pair transmission is formed between the screw rods and the sliders, the support plate is symmetrically and rotatably connected to a connecting seat inside, the side mold is slidably connected to the inside of the support platform, a push rod is rotatably connected between the slider and the connecting seat, and a clamping mechanism is symmetrically and fixedly connected inside the support plate.

[0010] As a further improvement of the above scheme, a hydraulic rod is fixedly installed inside the protective cover, a safety door is slidably connected to the outside of the protective cover, the movable end of the hydraulic rod is fixedly connected to the movable template, four limit rods are fixedly connected between the fixed template and the inner wall of the protective cover, and the movable template is slidably connected to the four limit rods.

[0011] As a further improvement of the above solution, the tops of the movable template and the fixed template are respectively slidably connected with sliding rods, the tops of the two side templates are slidably connected with top plates, and the sliding rods are fixedly connected to the top plates.

[0012] As a further improvement of the above solution, a support block is fixedly connected to the top of the support platform, a wedge block is fixedly connected to the top of the support block, and a torsion spring is fixedly connected between the top of the connecting seat and the inner wall of the support plate.

[0013] As a further improvement of the above scheme, the clamping mechanism includes a mounting seat fixedly connected to the inside of the support plate, the inside of the mounting seat is fixedly connected with a mounting shaft, the outside of the mounting shaft is rotatably connected with a clamping block, and a torsion spring is fixedly connected between the mounting shaft and the clamping block.

[0014] Another purpose of an embodiment of the present invention is to provide an injection molding machine, including a bracket and an injection molding component, the bracket is fixedly connected to the top of a supporting platform, the injection molding component includes a lower barrel and a feeding barrel, the lower barrel is fixedly installed on the top of the bracket, the feeding barrel is fixedly installed inside the bracket, the lower barrel and the feeding barrel are fixedly connected, a screw is rotatably connected inside the feeding barrel, and an extrusion mechanism is arranged inside the feeding barrel.

[0015] As a further improvement of the above scheme, the extrusion mechanism includes a driving rod slidably connected to the inside of the screw through a spline, and the inside of the bracket is symmetrically fixedly connected with two hydraulic rods, and the movable ends of the two hydraulic rods are fixedly connected with a movable seat, and a stepper motor is fixedly installed on the outer side of the movable seat. One end of the driving rod located in the bracket is rotatably connected to the movable seat, and the output shaft of the stepper motor is fixedly connected to the driving rod through a coupling.

[0016] As a further improvement of the above solution, a sealing plate is fixedly connected to the outer side of the driving rod, and the sealing plate is slidably connected to the nozzle via a connecting block, and through holes are evenly opened inside the nozzle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. During injection molding, the movable template slides along the guide rod in the guide seat, pushing the side molds on both sides to move toward each other and complete the docking. Then the movable template continues to move, driving the side molds to cooperate with the fixed template to form a complete mold cavity to meet the injection molding needs of hollow products. After the product is formed, the movable template and the side mold are reset synchronously. When the side molds are separated, the support plate drives the clamping mechanism to move to the bottom of the side mold. After the side molds are completely separated, the product falls on the side mold and slides naturally with its movement, thereby realizing mold opening and material unloading more conveniently, reducing the risk of product collision and ensuring the quality of material unloading.

[0019] 2. During the injection molding operation, the movable seat drives the extrusion mechanism, drives the screw to rotate, and pushes the hot-melt plastic to accumulate in the gap between the sealing plate and the screw. At this time, the second hydraulic rod is started to drive the movable seat to move horizontally. The movable seat separates the sealing plate from the nozzle through the driving rod, and the hot-melt plastic is injected into the end of the feed barrel close to the protective cover through the inner through hole of the nozzle. When the second hydraulic rod drives the movable seat to reset, the sealing plate fits with the nozzle, and the two continue to move, pushing the hot-melt plastic into the mold cavity composed of the movable template, the fixed template and the side mold to complete the injection molding filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the opening and closing mold assembly and the injection molding assembly of the present invention;

[0023] Figure 3 It is a schematic diagram of the top structure of the support platform of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the injection molding component of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the opening and closing mold assembly of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the material unloading mechanism of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the support block of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the mounting seat of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the movable template and the fixed template of the present invention;

[0030] Fig.10 It is a schematic diagram of the cross-sectional structure of the movable template and the fixed template of the present invention;

[0031] Fig.11 It is a schematic diagram of the internal structure of the guide seat of the present invention.

[0032] In the figure: 1, support platform; 2, bracket; 3, protective cover; 4, opening and closing mold assembly; 41, safety door; 42, opening and closing mold mechanism; 421, moving mold plate; 422, fixed mold plate; 423, side mold; 424, guide seat; 425, slide rail; 426, top plate; 427, guide bar; 428, slide rod; 429, guide rod; 43, unloading mechanism; 431, support plate; 432, connecting seat; 433, dual-axis motor; 434, torsion spring 1; 435, screw rod; 436, slider ; 437, push rod; 438, support block; 439, wedge block; 44, hydraulic rod one; 45, limit rod; 46, clamping mechanism; 461, mounting seat; 462, mounting shaft; 463, clamping block; 464, torsion spring two; 5, injection molding component; 51, discharge barrel; 52, feed barrel; 53, movable seat; 54, stepping motor; 55, hydraulic rod two; 56, screw; 57, extrusion mechanism; 571, drive rod; 572, sealing plate; 573, connecting block; 574, nozzle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 11 As shown, the present invention provides an embodiment:

[0035] A mold opening device for an injection molding machine comprises a support platform 1, a protective cover 3 is fixedly connected to the top of the support platform 1, a mold opening and closing assembly 4 is arranged inside the protective cover 3, and the mold opening and closing assembly 4 comprises a mold opening and closing mechanism 42 and a material discharge mechanism 43 arranged inside the protective cover 3;

[0036] The mold opening and closing mechanism 42 includes a movable mold plate 421 and a fixed mold plate 422. The movable mold plate 421 is fixedly connected to the top of the support platform 1. The movable mold plate 421 is slidably connected to the top of the support platform 1 through a slide rail 425. A side mold 423 is symmetrically arranged between the movable mold plate 421 and the fixed mold plate 422. A guide seat 424 is fixedly connected to the side away from the side mold 423. Two guide bars 427 are fixedly connected to the opposite sides of the movable mold plate 421 and the fixed mold plate 422, respectively. The guide bars 427 are all slidably connected to the inside of the guide seat 424. A guide rod 429 is symmetrically fixed to one end of the guide bar 427 located in the guide seat 424. The guide rod 429 is slidably connected to the inside of the guide seat 424.

[0037] The unloading mechanism 43 includes a support plate 431 and a dual-axis motor 433. The support platform 1 is symmetrically slidably connected to a slider 436 inside. The output shafts of the dual-axis motor 433 are fixedly connected to screw rods 435 through couplings. A spiral pair transmission is formed between the screw rods 435 and the sliders 436. The support plate 431 is symmetrically rotatably connected to a connecting seat 432 inside. The side mold 423 is slidably connected to the inside of the support platform 1. A push rod 437 is rotatably connected between the slider 436 and the connecting seat 432. The support plate 431 is symmetrically fixedly connected to a clamping mechanism 46 inside.

[0038] In practical application, if Figure 2 , Figure 3 , Fig. 9 , Fig.10 and Fig.11 As shown, in the mold closing stage: the movable mold plate 421 moves toward the fixed mold plate 422 along the slide rail 425 on the top of the support platform 1, and the side mold 423 slides along the guide strips 427 on the movable mold plate 421 and the fixed mold plate 422 through the guide seat 424, and the guide rod 429 slides in the guide seat 424, which further guides and stabilizes the movement of the side mold 423, until the mold closing is completed to form an injection cavity;

[0039] like Figure 2 and Figure 3 As shown, injection stage: after the mold is closed, the molten material is injected into the injection cavity, and the material is cooled and solidified to form;

[0040] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8As shown, in the mold opening stage: the movable mold plate 421 moves in the opposite direction along the slide rail 425, driving the fixed mold plate 422 to separate from the side mold 423. When the side molds 423 on both sides begin to separate, the double-axis motor 433 is started, and its output shaft drives the screw rod 435 to rotate. The screw rod 435 and the slider 436 are driven by the spiral pair, so that the slider 436 slides in a predetermined direction inside the support platform 1. The slider 436 pushes the connecting seat 432 through the push rod 437, thereby driving the support plate 431 to move, and the clamping mechanism 46 on the support plate 431 approaches and clamps the molded plastic part;

[0041] like Figure 3 and Figure 6 As shown, in the unloading stage: the dual-axis motor 433 runs continuously, and through the spiral pair transmission of the screw rod 435 and the slider 436 and the connection of the push rod 437, the support plate 431 together with the plastic parts clamped by the clamping mechanism 46 are moved to the unloading position, so that the plastic parts are unloaded under the action of gravity.

[0042] like Figure 2 , Figure 3 , Figure 5 and Fig. 9 As shown, a hydraulic rod 44 is fixedly installed inside the protective cover 3, a safety door 41 is slidably connected to the outside of the protective cover 3, the movable end of the hydraulic rod 44 is fixedly connected to the movable template 421, four limit rods 45 are fixedly connected between the fixed template 422 and the inner wall of the protective cover 3, and the movable template 421 is slidably connected to the four limit rods 45.

[0043] In actual application of this embodiment, before the injection molding machine starts to operate, the safety door 41 is in a closed state to ensure the safety of the operator. After starting the equipment, the hydraulic rod 44 in the protective cover 3 starts to work, and the movable end of the hydraulic rod 44 drives the movable template 421 to move. During the movement of the movable template 421, the fixed template 422 limits and guides the movable template 421 through the limiting rod 45 fixedly connected between it and the inner wall of the protective cover 3, so that the movable template 421 slides smoothly along the limiting rod 45, thereby realizing the mold closing or mold opening action with the fixed template 422.

[0044] like Fig.10 As shown, the tops of the movable mold plate 421 and the fixed mold plate 422 are slidably connected with slide rods 428 , respectively, the tops of the two side molds 423 are slidably connected with top plates 426 , and the slide rods 428 are fixedly connected to the top plates 426 .

[0045] When the movable plate 421 and the fixed plate 422 are in actual application, the slide bar 428 slides along the preset slideways on the top of the movable plate 421 and the fixed plate 422 respectively. Since the slide bar 428 is fixedly connected to the top plate 426, the top plate 426 will move accordingly, driving the side mold 423 slidably connected thereto to move synchronously. In the mold closing stage, the side mold 423 moves toward the center of the cavity with the top plate 426 and closes accurately. When the mold is opened, the side mold 423 slides away from the center of the cavity along the slideway of the top plate 426. During the whole process, the stable sliding of the slide bar 428 on the movable plate 421 and the fixed plate 422 provides guidance for the movement of the top plate 426 and the side mold 423, ensuring that the side mold 423 maintains a precise position and movement trajectory during the mold opening and closing process, preventing the side mold 423 from offsetting, ensuring the accuracy and stability of the injection mold opening and closing actions, and improving the molding quality of the injection molded products.

[0046] like Figure 6 and Figure 7 As shown, a support block 438 is fixedly connected to the top of the support platform 1, a wedge block 439 is fixedly connected to the top of the support block 438, and a torsion spring 434 is fixedly connected between the top of the connecting seat 432 and the inner wall of the support plate 431.

[0047] In actual application of this embodiment, when the connecting seat 432 moves with the support plate 431 to above the wedge block 439, the inclined surface of the wedge block 439 contacts the connecting seat 432. As the support plate 431 continues to move, the wedge block 439 gradually generates an upward thrust on the connecting seat 432. During this process, the torsion spring 434 is stretched or squeezed to store elastic potential energy. At this time, the support plate 431 is tilted to facilitate the unloading of plastic parts, thereby improving the stability and efficiency of unloading and ensuring the continuous and stable operation of the injection molding machine. When the support plate 431 is separated from the wedge block 439, the support plate 431 is reset under the action of the torsion spring 434.

[0048] like Figure 8 As shown, the clamping mechanism 46 includes a mounting seat 461 fixedly connected to the inside of the support plate 431, a mounting shaft 462 is fixedly connected to the inside of the mounting seat 461, a clamping block 463 is rotatably connected to the outside of the mounting shaft 462, and a torsion spring 464 is fixedly connected between the mounting shaft 462 and the clamping block 463.

[0049] In actual application of this embodiment, when the support plate 431 approaches the injection-molded plastic part driven by the dual-axis motor 433, the clamping block 463 first contacts the plastic part. As the support plate 431 continues to approach, the plastic part falls between the two clamping blocks 463, ensuring stable clamping of the plastic part. When the support plate 431 moves to the unloading position, the plastic part is unloaded under the action of the wedge block 439, and the torsion spring 464 prevents the support plate 431 from being affected by the movement of the movable template 421.

[0050] like Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides another embodiment:

[0051] An injection molding machine, comprising a bracket 2 and an injection molding assembly 5, wherein the bracket 2 is fixedly connected to the top of a support platform 1, and the injection molding assembly 5 comprises a lower barrel 51 and a feed barrel 52, wherein the lower barrel 51 is fixedly installed on the top of the bracket 2, and the feed barrel 52 is fixedly installed inside the bracket 2, and the lower barrel 51 and the feed barrel 52 are fixedly connected, and a screw 56 is rotatably connected inside the feed barrel 52, and an extrusion mechanism 57 is arranged inside the feed barrel 52, and the extrusion mechanism 57 comprises a driving rod 571 slidably connected to the inside of the screw 56 through a spline, and the bracket 2 is fixedly connected to the top of the bracket 2, and the feed barrel 52 is fixedly connected to the inside ... The inside of the frame 2 is symmetrically fixedly connected with hydraulic rods 55, the movable ends of the two hydraulic rods 55 are fixedly connected with a movable seat 53, the outer side of the movable seat 53 is fixedly installed with a stepper motor 54, one end of the driving rod 571 located in the bracket 2 is rotatably connected to the movable seat 53, the output shaft of the stepper motor 54 is fixedly connected to the driving rod 571 through a coupling, the outer side of the driving rod 571 is fixedly connected with a sealing plate 572, the sealing plate 572 is slidably connected with a nozzle 574 through a connecting block 573, and the inside of the nozzle 574 is evenly provided with through holes.

[0052] In actual application of this embodiment, the material first enters the lower barrel 51, and naturally falls into the feed barrel 52 fixedly connected thereto by gravity. At the same time, the stepper motor 54 is started, and its output shaft drives the driving rod 571 to rotate through the coupling. Since the driving rod 571 is slidably connected to the screw 56 through the spline, the screw 56 starts to rotate under the drive of the driving rod 571. During the rotation of the screw 56, the material in the feed barrel 52 is pushed from one end close to the lower barrel 51 to the other end;

[0053] While the feed barrel 52 is conveying and heating the material, the hydraulic rod 55 starts to work, and its movable end pushes the movable seat 53 connected thereto to move. The movable seat 53 drives the sealing plate 572 to separate from the nozzle 574 through the driving rod 571, so that the hot-melt plastic can move through the through hole in the nozzle 574 to the end of the feed barrel 52 close to the protective cover 3. When the hydraulic rod 55 drives the movable seat 53 to reset, the sealing plate 572 and the nozzle 574 resume fitting. At this time, the sealing plate 572 and the nozzle 574 that continue to move will push the hot-melt plastic into the mold composed of the movable mold plate 421, the fixed mold plate 422 and the side mold 423.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold opening device for an injection molding machine, comprising a support platform (1), a protective cover (3) being fixedly connected to the top of the support platform (1), characterized in that: A mold opening and closing assembly (4) is arranged inside the protective cover (3), and the mold opening and closing assembly (4) comprises a mold opening and closing mechanism (42) and a material discharge mechanism (43) arranged inside the protective cover (3); The mold opening and closing mechanism (42) comprises a movable mold plate (421) and a fixed mold plate (422), wherein the movable mold plate (421) is fixedly connected to the top of the support platform (1), and the movable mold plate (421) is slidably connected to the top of the support platform (1) via a slide rail (425), and side molds (423) are symmetrically arranged between the movable mold plate (421) and the fixed mold plate (422), and a guide seat (424) is fixedly connected to the side away from the side mold (423), and two guide strips (427) are fixedly connected to the opposite sides of the movable mold plate (421) and the fixed mold plate (422), and the guide strips (427) are slidably connected to the inside of the guide seat (424), and a guide rod (429) is symmetrically fixed to one end of the guide strip (427) located in the guide seat (424), and the guide rod (429) is slidably connected to the inside of the guide seat (424); The unloading mechanism (43) comprises a support plate (431) and a double-axis motor (433); a slider (436) is symmetrically slidably connected inside the support platform (1); the output shafts of the double-axis motor (433) are respectively fixedly connected to screw rods (435) through couplings; a spiral pair transmission is formed between the screw rods (435) and the sliders (436); the support plate (431) is symmetrically rotatably connected to a connecting seat (432); the side mold (423) is slidably connected to the inside of the support platform (1); a push rod (437) is rotatably connected between the slider (436) and the connecting seat (432); and the support plate (431) is symmetrically fixedly connected to a clamping mechanism (46).

2. The mold opening device for an injection molding machine according to claim 1, characterized in that: A hydraulic rod (44) is fixedly installed inside the protective cover (3), a safety door (41) is slidably connected to the outside of the protective cover (3), a movable end of the hydraulic rod (44) is fixedly connected to a movable template (421), four limit rods (45) are fixedly connected between the fixed template (422) and the inner wall of the protective cover (3), and the movable template (421) is slidably connected to the four limit rods (45).

3. The mold opening device for an injection molding machine according to claim 2, characterized in that: The tops of the movable mold plate (421) and the fixed mold plate (422) are slidably connected to sliding rods (428), the tops of the two side molds (423) are slidably connected to top plates (426), and the sliding rods (428) are fixedly connected to the top plates (426).

4. The mold opening device for an injection molding machine according to claim 2, characterized in that: The top of the support platform (1) is fixedly connected to a support block (438), the top of the support block (438) is fixedly connected to a wedge block (439), and a torsion spring (434) is fixedly connected between the top of the connecting seat (432) and the inner wall of the support plate (431).

5. The mold opening device for an injection molding machine according to claim 2, characterized in that: The clamping mechanism (46) comprises a mounting seat (461) fixedly connected to the inside of the support plate (431); a mounting shaft (462) is fixedly connected to the inside of the mounting seat (461); a clamping block (463) is rotatably connected to the outside of the mounting shaft (462); and a second torsion spring (464) is fixedly connected between the mounting shaft (462) and the clamping block (463).

6. An injection molding machine, comprising an injection molding machine mold opening device according to any one of claims 1 to 5, characterized in that: The invention also comprises a bracket (2) and an injection molding assembly (5), wherein the bracket (2) is fixedly connected to the top of the support platform (1), and the injection molding assembly (5) comprises a lower barrel (51) and a feed barrel (52), wherein the lower barrel (51) is fixedly installed on the top of the bracket (2), and the feed barrel (52) is fixedly installed inside the bracket (2), and the lower barrel (51) and the feed barrel (52) are fixedly connected, and a screw (56) is rotatably connected inside the feed barrel (52), and an extrusion mechanism (57) is arranged inside the feed barrel (52).

7. An injection molding machine according to claim 6, characterized in that: The extrusion mechanism (57) includes a driving rod (571) slidably connected to the inside of the screw (56) through a spline, and the inside of the bracket (2) is symmetrically fixedly connected with a hydraulic rod 2 (55), and the movable ends of the two hydraulic rods 2 (55) are fixedly connected with a movable seat (53), and a stepper motor (54) is fixedly installed on the outer side of the movable seat (53). One end of the driving rod (571) located in the bracket (2) is rotatably connected to the movable seat (53), and the output shaft of the stepper motor (54) is fixedly connected to the driving rod (571) through a coupling.

8. An injection molding machine according to claim 7, characterized in that: The outer side of the driving rod (571) is fixedly connected with a sealing plate (572), and the sealing plate (572) is slidably connected with a spray head (574) via a connecting block (573), and through holes are evenly opened inside the spray head (574).

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