An injection molding device for modular plastic storage cabinet panels.

Abstract

This invention discloses an injection molding device for a modular plastic storage cabinet panel, specifically relating to the field of plastic panel injection molding technology. It includes an injection molding frame, an injection barrel, and an injection melting tube. The injection melting tube has a threaded rod inside, which pushes the material outwards along the inside of the tube while simultaneously heating and melting the material inside. The injection melting tube also has a stabilizing component that cooperates with the threaded rod, which divides and aggregates the material passing through the area. Through the arrangement of the cross-shaped waveguide, threaded rod, injection melting tube, and directional plates, the cross-shaped waveguide creates a turbulent flow effect on the material at the end of the threaded rod, improving the uniformity of material dispersion during the threaded rod's pushing process. Five directional plates arranged around the outer periphery of the threaded rod divide the originally single annular conveying cross section into five independent flow channel units distributed in a star-shaped pattern.

Description

Technical Field

[0001] This invention relates to the field of plastic sheet injection molding technology, and specifically to an injection molding apparatus for modular plastic storage cabinet sheets. Background Technology

[0002] Injection molding is one of the core processes in plastic product manufacturing, widely used in the mass production of large sheet products such as modular plastic storage cabinets. During the injection molding process, the plastic raw material enters the heated conveying pipe through the feed port. Under the combined action of the rotating screw and the external heater, it undergoes stages such as solid-phase transport, melting and plasticizing, and melt homogenization, ultimately filling the mold cavity in a highly uniform molten state with consistent temperature and viscosity. The thermal uniformity of the melt before entering the mold directly determines the internal stress distribution, dimensional stability, and surface quality of the product. Therefore, the plasticizing and homogenizing mechanism inside the heated conveying pipe is the most critical subsystem in the injection molding unit.

[0003] To achieve radial thermal homogenization of the melt during axial propulsion, current methods typically involve placing various mixing elements in the homogenization section of a screw, adding pins to the screw, or installing fixed grooved bushings on the inner wall of the barrel. When the molten material flows along the screw and encounters these fixed or rotating mixing structures, it is forced to undergo local diversion, reversal, or shearing. This relies on repeated tumbling and folding of the overall material flow to reduce the temperature difference between the central layer and the near-wall layer, making the radial temperature distribution tend to be flat. However, the object being mixed is a continuous material flow with significant radial temperature differences. The mixing elements can only mix the material by forcibly disrupting the original layered structure of the overall flow. However, due to the limitations of its structural boundaries, the penetration depth of the material flow segmentation and reorganization caused by the mixing action in the radial direction is limited. It is difficult to relocate the high-temperature hot layer near the wall and the low-temperature core layer in the central region, resulting in low heat transfer efficiency. The homogenization process relies on slow diffusion over long distances, leading to warping and deformation of the product. Summary of the Invention

[0004] The purpose of this invention is to provide an injection molding apparatus for modular plastic locker panels to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an injection molding device for a modular plastic storage cabinet panel, comprising an injection molding machine frame, an injection molding barrel, and an injection melting tube. The injection melting tube is provided with a threaded rod inside, which is used to push the material outward along the inside of the injection melting tube while the injection melting tube heats and melts the material inside. The injection melting tube is provided with an injection stabilizing component that cooperates with the threaded rod inside, and the injection stabilizing component is used to divide and converge the material passing through the area and knead it.

[0006] The injection stabilizing assembly includes a crescent groove inside the injection melting tube and several directional plates outside the threaded rod, with the directional plates and the threaded rod forming a polygonal channel. A main bearing ring is fixedly connected to the crescent groove and the inside of the injection melting tube. A synchronization assembly is provided between the main bearing ring and the several directional plates, and the synchronization assembly is used to drive each directional plate to adjust along the outer angle of the main bearing ring. A cross-shaped corrugated frame is provided at the connection between the injection melting tube and the injection plastic bucket, and the cross-shaped corrugated frame is used to maintain the looseness of the material at the connection.

[0007] The outer side of the main bearing ring is provided with an interactive component, which is used to cause multi-directional disturbance to the incoming material;

[0008] A melting assembly is provided between the injection melting tube and the injection molding machine frame, and the melting assembly is used to drive the cross-shaped wave frame to move in multiple dimensions.

[0009] Preferably, the synchronization component includes a synchronization ring movably connected to one end of the main bearing ring and second shafts respectively installed on one side of the split plate and the synchronization ring. The two second shafts are jointly sleeved with a connecting arm, and the split plate can be finely adjusted along one end of the main bearing ring by means of the connecting arm.

[0010] The first shaft is fixedly connected to the side of the main bearing ring near the split plate, and the split plate is movably sleeved on the outside of the first shaft. The split plate moves stably along one end of the main bearing ring through the first shaft.

[0011] Preferably, an electric push rod is fixedly connected to the outside of the injection melting tube, a rocker arm is hinged to the outside of the synchronization ring, the telescopic end of the electric push rod extends into the inside of the crescent groove and is fixedly connected to a hinge seat, and the outside of the hinge seat is set as an inclined structure.

[0012] The top of the rocker arm extends into the interior of the hinge seat and forms a hinge with the hinge seat inside.

[0013] The synchronizing ring has a sliding groove on the side near the connecting arm, and one end of the main bearing ring is fixedly connected to a sliding rod, which is located inside the sliding groove and forms a sliding contact with the sliding groove inside.

[0014] Preferably, the interactive component includes an interactive frame and two symmetrically fixedly connected to one end of the main bearing ring. The interactive frame is arched with an inclined side. Two torsion arms are installed on the side of the interactive frame near the main bearing ring, and one end of the torsion arm extends into the interior of the stabilizing seat and forms a hinge with the stabilizing seat inside. The interactive frame forms a slope fit with one side of the hinge seat through the torsion arms, so as to push the interactive frame during the horizontal movement of the hinge seat.

[0015] Two symmetrical reset components are provided between the crescent groove and the interaction frame.

[0016] Preferably, each of the reset components includes a centering column fixedly connected inside the crescent groove and a centering seat fixedly connected to the top of the interactive frame. One end of the centering column is provided with a sliding groove, and the opening of the sliding groove is funnel-shaped. A reset spring is fixedly connected inside the sliding groove. A ball is installed at one end of the reset spring. The end of the centering seat near the ball is provided with a circular slot that matches the curvature of the ball surface.

[0017] Preferably, the injection molding assembly includes a central support ring frame fixedly connected inside the injection molding barrel and two auxiliary rods symmetrically installed at both ends of the cross-shaped frame. The central support ring frame is designed as a conical structure and is hollow inside. The injection molding machine frame is movably connected to two symmetrical centering columns, which are used to stably support the auxiliary rods inside the injection molding machine frame. The injection molding machine frame is fixedly connected to a servo motor on the outside, and the output end of the servo motor extends into the interior of the injection molding machine frame and forms a fixed connection with one of the centering columns.

[0018] Both auxiliary rods have a speed-passing groove on one side for the reciprocating motion of the cross-shaped wave frame.

[0019] Preferably, the injection molding barrel and the injection molding machine frame are further equipped with two symmetrical center-limiting frames, one of which extends to the inside of the middle support ring frame and is sleeved with the middle support ring frame inside, and the bottom end of the other center-limiting frame is movably connected to the inside of the injection molding machine frame.

[0020] The two center-limiting frames are connected by a column, and the cross-shaped frame is movably sleeved on the outside of the column.

[0021] Preferably, the interior of the middle support climbing ring frame is further provided with a semi-circular groove, and the top of one of the center limiting frames extends to the outside of the middle support climbing ring frame and is fixedly connected to a scraper rod. One end of the scraper rod is fixedly connected to a semi-arc block, which is located inside the semi-circular groove and forms a sliding contact with the semi-circular groove inside.

[0022] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0023] 1. This invention, through the arrangement of a cross-shaped wave frame, a threaded rod, an injection melting tube, and directional plates, allows the cross-shaped wave frame to create a turbulent wave effect on the material at the end of the threaded rod, improving the uniformity of material dispersion during the threaded rod's pushing process. The five directional plates arranged around the outer periphery of the threaded rod divide the original single annular conveying cross section into five independent flow channel units distributed in a star shape. When the threaded rod rotates, its screw edges sweep through each flow channel unit in sequence, pushing the molten material to complete a forced volume replacement between the corners and valleys of the star-shaped flow channel. The corner area has narrow gaps and strong shearing action, while the valley area has wide gaps and sufficient material buffer capacity. Under the thrust of the threaded rod, the material successively experiences the narrow and wide alternating shear stress fields of the five flow channel units. Under the premise of constant axial pushing displacement, the effective shearing process can be greatly increased, significantly improving the plasticization uniformity of the melt and helping to improve the molding quality of the finished sheet material.

[0024] 2. By setting up a synchronous ring, connecting arm, split plate and threaded rod, the gap between the split plate and the threaded rod can be reciprocated and adjusted. During the reciprocating adjustment of the gap, the pear-shaped outline of the split plate can guide the material flow to smoothly adhere and transition along its surface, forming a low-turbulence wake confluence area at the tail of the split plate. When the screw edge of the threaded rod rotates to this area, the top surface of the screw edge just sweeps over the confluence area, re-winding the two wake material flows into the screw edge propulsion surface, further improving the plasticization uniformity of the raw material.

[0025] 3. By setting up crescent grooves, hinge seats, directional plates and interactive frames, the interactive frames can be driven to reciprocate along the crescent grooves and inside the injection melting tube. The incoming melt first impacts the arched surface of the interactive frames. The arched surface can spread the material flow to both sides and up and down, generating a longitudinal pre-laying and radial pre-acceleration effect. The reciprocating motion of the interactive frames can push the melt that has entered and the melt that is about to enter to complete the pre-mixing interaction before flowing into the gap between the directional plate and the threaded rod, so that the inlet flow state of the material when entering the gap is more stable and the filling is more full, which helps to alleviate the problem of uneven shearing caused by inlet eddies.

[0026] 4. By setting up a synchronization component, five directional plates and a threaded rod, the five directional plates can be adjusted along the outside of the threaded rod, and the distance between the five directional plates and the threaded rod can be adjusted back and forth. The total flow area along the axis is constant, but the local flow area of ​​each flow channel unit changes periodically with the back and forth fine adjustment of the directional plates and the rotation of the threaded rod. When a certain flow channel unit generates instantaneous high pressure due to the advancement of the screw, the adjacent flow channel unit is in a low-pressure receiving state. The pressure difference drives a small amount of melt to perform circumferential micro-exchange through the axial end gap between the directional plate and the screw, forming a breathing pressure balance behavior, ensuring that there is no dead zone in the back flow area of ​​the directional plate.

[0027] 5. By setting up the split plate, cross-shaped wave frame, column, auxiliary rod, and center limiter, the eccentric transmission and horizontal reciprocating motion of the cross-shaped wave frame can be further transformed into the fixed-axis reciprocating oscillating motion of the column. This makes the gap between the column and the injection molding machine frame and the injection barrel non-uniformly distributed along the circumference. Local high flow velocity is generated in the gap contraction zone, and a low flow velocity vortex zone is formed in the gap expansion zone. This circumferentially asymmetrical gap distribution can cause the molten material to undergo radial flipping and axial folding during the threaded rod push process, changing the effective flow cross section shape at the joint. This allows the heat conducted from the injection molding melt pipe wall to the near-wall melt to be quickly carried to the center of the material flow. At the same time, the low-temperature material in the center area that is not fully plasticized is carried to the near-wall surface for heating, which helps to ensure a continuous and uniform supply of solid granules to the plasticizing zone and avoids the common problem of surface overheating and decomposition and poor core plasticization.

[0028] 6. Through the configuration of the center-limiting frame, scraper, intermediate support ring frame, semi-circular block, and semi-circular groove, the fixed-axis reciprocating oscillating motion of the center-limiting frame can drive the scraper to complete the fixed-axis reciprocating oscillation along the outside of the intermediate support ring frame. The movement of the scraper simultaneously drives the semi-circular block to slide along the inside of the semi-circular groove, providing stable guidance and limiting for the movement of the scraper along the inside of the intermediate support ring frame. During the movement of the scraper, it can form a reciprocating collision with the support frame inside the intermediate support ring frame, so that the scraper completes the scraping motion inside the intermediate support ring frame. This changes the shearing process of the raw material from a unidirectional continuous state to a multidirectional alternating state, effectively breaking up the unidirectional flow trend of the raw material as it enters the injection molding machine frame, which helps to ensure a continuous and uniform supply of solid granules to the plasticizing zone. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the cross-shaped wave frame of the present invention;

[0032] Figure 3 This is a schematic diagram of the first motion state of the directional plate of the present invention;

[0033] Figure 4 This is a schematic diagram of the second motion state of the directional plate of the present invention;

[0034] Figure 5 This is a schematic diagram of the assembly of the hinged base and the interaction frame of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the column of the present invention;

[0036] Figure 7 This is a schematic diagram of the first movement of the cross-shaped frame and the column of the present invention;

[0037] Figure 8 This is a schematic diagram of the second movement of the cross-shaped frame and column of the present invention;

[0038] Figure 9 This is a schematic diagram of the third movement of the cross-shaped frame and column of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Injection molding machine frame; 11. Injection molding bucket; 12. Injection melting tube; 13. Threaded rod;

[0041] 2. Stabilizing assembly; 21. Crescent groove; 22. Main bearing ring; 23. Split plate; 24. Cross-shaped wave frame; 3. Synchronizing assembly; 31. Synchronizing ring; 32. First shaft column; 33. Second shaft column; 34. Connecting arm; 35. Slide groove; 36. Slide rod; 37. Rocker arm; 38. Hinge seat; 39. Electric push rod; 4. Interactive assembly; 41. Interactive frame; 42. Stabilizing seat; 43. Torsion arm; 44. Centering seat; 45. Circular slot; 46. Sphere; 47. Centering stabilizer column; 48. Sliding groove; 49. Return spring;

[0042] 5. Li-rong assembly; 51. Core fin; 52. Auxiliary rod; 53. Quick passage groove; 54. Core fin; 55. Column; 56. Semi-circular groove; 57. Scraper; 58. Semi-arc block; 59. Servo motor; 501. Mid-bearing climbing ring frame. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] This invention provides, for example Figure 1 , Figure 2 , Figure 3 and Figure 4 The injection molding device for a modular plastic locker panel shown includes an injection molding frame 1, an injection barrel 11, and an injection melting tube 12. The injection melting tube 12 is provided with a threaded rod 13 inside, and the threaded rod 13 is used to push the material outward along the inside of the injection melting tube 12 while the injection melting tube 12 heats and melts the material inside. The injection melting tube 12 is provided with an injection stabilizing component 2 that cooperates with the threaded rod 13 inside, and the injection stabilizing component 2 is used to divide and converge the material passing through the area and knead it.

[0045] The injection stabilizing component 2 includes a crescent groove 21 inside the injection melting tube 12 and several directional plates 23 disposed outside the threaded rod 13. The several directional plates 23 and the threaded rod 13 form a polygonal channel. A main bearing ring 22 is fixedly connected to the crescent groove 21 and the inside of the injection melting tube 12. A synchronization component 3 is provided between the main bearing ring 22 and the several directional plates 23. The synchronization component 3 is used to drive each directional plate 23 to adjust along the outer angle of the main bearing ring 22. A cross-shaped bevel bracket 24 is provided at the joint between the injection melting tube 12 and the injection barrel 11. The cross-shaped bevel bracket 24 is used to maintain the looseness of the material at the joint.

[0046] The synchronization component 3 includes a synchronization ring 31 movably connected to one end of the main bearing ring 22 and second shaft posts 33 respectively installed on one side of the split plate 23 and the synchronization ring 31. The two second shaft posts 33 are connected to a common connecting arm 34, and the angle of the split plate 23 is finely adjusted along one end of the main bearing ring 22 through the connecting arm 34.

[0047] The first shaft 32 is fixedly connected to the side of the main bearing ring 22 near the split plate 23, and the split plate 23 is movably sleeved on the outside of the first shaft 32. The split plate 23 moves stably along one end of the main bearing ring 22 through the first shaft 32. An electric push rod 39 is also fixedly connected to the outside of the injection melting tube 12. A rocker arm 37 is hinged to the outside of the synchronization ring 31. The telescopic end of the electric push rod 39 extends into the inside of the crescent groove 21 and is fixedly connected to a hinge seat 38. The outside of the hinge seat 38 is set as an inclined structure.

[0048] The top of the rocker arm 37 extends into the interior of the hinge seat 38 and is hinged to the hinge seat 38 therein.

[0049] The synchronizing ring 31 has a groove 35 on one side near the connecting arm 34. One end of the main bearing ring 22 is fixedly connected to a sliding rod 36, which is located inside the groove 35 and forms a sliding contact with the groove 35 inside. Five dividing plates 23 are provided, and the five dividing plates 23 are evenly arranged around the inner circumference of the injection melting tube 12. The dividing plates 23 and the outer circumference of the threaded rod 13 enclose a melt conveying channel. The inner wall of the channel together encloses a star-shaped flow channel. The radial cross section of the star-shaped flow channel is a pentagonal star configuration, with five outwardly protruding star points and five inwardly concave star valleys. The star points and star valleys are evenly distributed alternately along the circumference. The dividing plate 23 adopts a pear-shaped structure design. Its cross section is pear-shaped, with a rounded blunt head structure at the front end and a tapered tail structure at the back end.

[0050] The cross-shaped wave frame 24 and the threaded rod 13 are arranged eccentrically inside the injection molding machine frame 1. It should be noted that the number of connecting arms 34, second shaft column 33, first shaft column 32, slide groove 35 and slide rod 36 are all matched with the number of split plates 23, and the components are set up in a coordinated manner.

[0051] refer to Figure 2 and Figure 5 As shown, the external part of the main bearing ring 22 is provided with an interaction component 4, which is used to cause multi-directional disturbance to the incoming material. The interaction component 4 includes an interaction frame 41 and two symmetrically fixedly connected to one end of the main bearing ring 22. The interaction frame 41 is arched and its side is inclined. Two torsion arms 43 are installed on the side of the interaction frame 41 near the main bearing ring 22. One end of the torsion arm 43 extends into the interior of the stabilizing seat 42 and forms a hinge with the stabilizing seat 42 inside. The interaction frame 41 forms a slope fit with one side of the hinge seat 38 through the torsion arm 43, so as to push the interaction frame 41 during the horizontal movement of the hinge seat 38.

[0052] Two symmetrical reset components are provided between the crescent groove 21 and the interaction frame 41. Each reset component includes a centering stabilizer 47 fixedly connected inside the crescent groove 21 and a centering seat 44 fixedly connected to the top of the interaction frame 41. One end of the centering stabilizer 47 is provided with a sliding groove 48, and the opening of the sliding groove 48 is flared. A reset spring 49 is fixedly connected inside the sliding groove 48. A ball 46 is installed at one end of the reset spring 49. The end of the centering seat 44 near the ball 46 is provided with a circular slot 45 that matches the curvature of the surface of the ball 46. The interaction frame 41 adopts an arched structure design. A floating gap is reserved between the stabilizing seat 42 and the split plate 23 at the end of the main bearing ring 22. This floating gap can effectively prevent the split plate 23 from getting stuck with the stabilizing seat 42 during reciprocating motion.

[0053] refer to Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, a melt-feeding assembly 5 is provided between the injection molding melting tube 12 and the injection molding machine frame 1. The melt-feeding assembly 5 is used to drive the cross-shaped frame 24 to move in multiple dimensions. The melt-feeding assembly 5 includes a central support ring frame 501 fixedly connected inside the injection molding barrel 11 and two auxiliary rods 52 symmetrically installed at both ends of the cross-shaped frame 24. The central support ring frame 501 is designed as a conical structure and is hollow inside. Two symmetrical center-limiting columns 51 are movably connected inside the injection molding machine frame 1. The center-limiting columns 51 are used to stably support the auxiliary rods 52 inside the injection molding machine frame 1. A servo motor 59 is fixedly connected to the outside of the injection molding machine frame 1. The output end of the servo motor 59 extends into the inside of the injection molding machine frame 1 and forms a fixed connection with one of the center-limiting columns 51.

[0054] One side of each of the two auxiliary rods 52 is provided with a quick passage groove 53 for the reciprocating motion of the cross-shaped frame 24. The injection molding barrel 11 and the injection molding machine frame 1 are also equipped with two symmetrical center limiting frames 54. The top of one of the center limiting frames 54 extends into the interior of the middle bearing ring frame 501 and forms a sleeve with the middle bearing ring frame 501 inside. The bottom end of the other center limiting frame 54 is movably connected to the interior of the injection molding machine frame 1.

[0055] A column 55 is connected between the two center-limiting frames 54. The cross-shaped frame 24 is movably sleeved on the outside of the column 55. A semi-circular groove 56 is also provided inside the middle support ring frame 501. The top of one of the center-limiting frames 54 extends to the outside of the middle support ring frame 501 and is fixedly connected to a scraper 57. One end of the scraper 57 is fixedly connected to a semi-arc block 58. The semi-arc block 58 is located inside the semi-circular groove 56 and forms a sliding contact with the semi-circular groove 56 inside. First, the connection between the injection molding machine frame 1 and the injection molding barrel 11 is used as a fixed frame to provide a stable installation reference and fixed rotation fulcrum for all moving components.

[0056] Working principle:

[0057] When using:

[0058] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when plastic storage cabinet sheets need to be injection molded, firstly, the injection molding barrel 11 feeds the injection molding granules inside into the injection molding machine frame 1. Then, the threaded rod 13 rotates, spirally pushing the material inside the injection molding machine frame 1, so that the material is conveyed into the injection melting tube 12 under the drive of the threaded rod 13. The threaded rod 13 forms a long-distance heating and conveying path inside the injection melting tube 12, so that the material is heated and melted by the high temperature inside the injection melting tube 12 during its movement inside the injection melting tube 12, providing the basic conditions for the molten material to be injected into the injection mold cavity.

[0059] Secondly, the threaded rod 13 continuously pushes the raw material into the injection melting tube 12, allowing the raw material to be heated and melted inside the injection melting tube 12. As the melt flows through the gap between the dividing plate 23 and the threaded rod 13, the five dividing plates 23 arranged around the outer periphery of the threaded rod 13 divide the originally single annular conveying section into five independent flow channel units distributed in a star-shaped pattern. When the threaded rod 13 rotates, its helical edges sweep through each flow channel unit sequentially, forcibly displacing the molten material between the corners and valleys of the star-shaped flow channel. The corner gaps are narrow with strong shearing action, while the valley gaps are wide with sufficient material buffer capacity. Under the thrust of the threaded rod 13, the material sequentially experiences the narrow-wide alternating shear stress field of the five flow channel units, significantly increasing the effective shearing process while maintaining a constant axial displacement, thus significantly improving the uniformity of melt plasticization. Simultaneously, the extension and retraction drive of the electric push rod 39 drives its extension end to reciprocate along the inside of the crescent groove 21. The displacement of the electric push rod 39 synchronously pulls or pushes the hinge seat 38 to reciprocate along the inside of the crescent groove 21. During the movement of the hinge seat 38, the rocker arm 37 is pushed to move in the direction of force. The displacement of the rocker arm 37 drives the synchronous ring 31 to rotate along the end of the main bearing ring 22. At the same time, the inner wall of the slide groove 35 slides along the outer wall of the slide rod 36, providing stable guidance and limit for the movement of the synchronous ring 31 along the end of the main bearing ring 22. With the displacement of the synchronous ring 31, the second shaft column 33 connected to it moves synchronously. The movement of the second shaft column 33 drives the connecting arm 34 to move in an arc along the end of the main bearing ring 22. The displacement of the connecting arm 34 further drives the second shaft column 33 connected to it to move synchronously. During the movement of the second shaft column 33, the split plate 23 moves in an arc along one side of the main bearing ring 22.

[0060] refer to Figure 2 , Figure 3 and Figure 4As shown, during its movement, the directional plate 23 always revolves around the outside of the first shaft column 32, making the trajectory of the directional plate 23 centered on the first shaft column 32. Similarly, the other directional plates 23 move synchronously under the drive of the corresponding connecting arms 34, so that the gap between the five directional plates 23 and the threaded rod 13 can be synchronously adjusted back and forth. During the back and forth adjustment of the gap between the directional plates 23 and the threaded rod 13, the pear-shaped outline of the directional plate 23 allows the material flow to smoothly adhere and transition along its arc surface, forming a low-turbulence wake confluence area at the tail of the directional plate 23; when the screw edge of the threaded rod 13 rotates to this area, The top surface of the screw ridge just sweeps across the confluence area, re-entraining the two tail material flows into the screw ridge propulsion surface. The total flow area of ​​this flow channel structure remains constant along the axial direction, while the local flow area of ​​each flow channel unit changes periodically with the reciprocating fine adjustment of the dividing plate 23 and the rotation of the threaded rod 13. When a certain flow channel unit generates instantaneous high pressure due to the screw ridge propulsion, the adjacent flow channel unit is in a low-pressure receiving state. The pressure difference drives a small amount of melt to complete circumferential micro-exchange through the axial end gap between the dividing plate 23 and the screw ridge, forming a breathing pressure balance effect and avoiding stagnation dead zones in the backflow area of ​​the dividing plate 23.

[0061] refer to Figure 2 and Figure 5 As shown, secondly, when the reciprocating extension and retraction of the electric push rod 39 drives the hinge seat 38 to move horizontally back and forth along the inside of the crescent groove 21, the slope difference design between the hinge seat 38 and the interaction frame 41 ensures that when the hinge seat 38 retracts, one side of it remains in contact with one side of the interaction frame 41, and the gap between the interaction frame 41 and the hinge seat 38 continues to decrease. At this time, the return spring 49 extends elastically and applies a pushing force to one side of the ball 46, causing the ball 46 to come into contact with the inner wall of the circular slot 45, thereby pushing the centering seat 44 to move in the direction of force. At the same time, the melt comes into contact with one side of the interaction frame 41 and generates an auxiliary pushing force, pushing the interaction frame 41 to move further. During the movement of the interaction frame 41, the torsion arm 43 moves along the inside of the connecting seat 42. The movement of the interlocking frame 41 ensures its stability during the movement of the interlocking frame 41 along the crescent groove 21. Conversely, during the extension of the hinge seat 38, one side of the hinge seat 38 remains in contact with one side of the interlocking frame 41, and the contact area between the interlocking frame 41 and the hinge seat 38 continues to increase, pushing the interlocking frame 41 to move in the direction of force. This, in turn, pushes the ball 46 through the centering seat 44 and the circular slot 45. The displacement of the ball 46 compresses the return spring 49, causing the return spring 49 to undergo elastic compression deformation along the sliding groove 48. Ultimately, this achieves the reciprocating oscillation of the interlocking frame 41 along the crescent groove 21 and inside the injection melting tube 12, allowing the interlocking frame 41 to push the melt during its movement and complete the pre-mixing interaction with the melt that is about to enter the gap between the dividing plate 23 and the threaded rod 13.

[0062] refer to Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, finally, the electric push rod 39 drives one of the limiting columns 51 to rotate. The rotation of the limiting column 51 drives the auxiliary rod 52 connected to it to rotate synchronously inside the injection molding machine frame 1, so that the auxiliary rod 52 always rotates continuously and uniformly in a circular motion around the inside of the injection molding machine frame 1. Because the cross-shaped frame 24 is connected to the auxiliary rod 52, it forms an eccentric structure with the column 55. The rotation center of the cross-shaped frame 24 has a fixed eccentric offset distance from its own contour center. During the continuous full-circle rotation of the auxiliary rod 52, the cross-shaped frame 24 is always nested inside the speed pass groove 53 and slides freely relative to the column 55. The cross-shaped frame 24 performs mechanical and kinematic decomposition on the motion of the column 55, completely canceling and restricting the vertical motion component in the circular motion, and only releasing the horizontal forward and backward motion thrust. The two limiting frames 54 are respectively connected to the column 55, The injection molding machine frame 1 maintains a fixed connection, forming a fixed rotating fulcrum that will not shift position. As the cross-shaped frame 24 moves in a circular motion from top to bottom along the two auxiliary rods 52 inside the injection molding machine frame 1, the cross-shaped frame 24 moves to the left along the inside of the speed pass groove 53, simultaneously pushing the column 55 to swing. The movement of the column 55 drives the two center limit frames 54 to swing synchronously. When the column 55 completes its swing and the cross-shaped frame 24 moves downward, the cross-shaped frame 24 moves from left to right along the inside of the speed pass groove 53, while the position of the column 55 remains unchanged. The cross-shaped frame 24 slides downward along the outside of the column 55. At the same time, as the cross-shaped frame 24 moves in a circular motion from bottom to top along the auxiliary rods 52, it pulls the cross-shaped frame 24 back from right to left along the inside of the speed pass groove 53. The cross-shaped frame 24 moves upward along the outside of the column 55 and pushes the column 55 to swing outward and reset.

[0063] refer to Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, relying on the aforementioned continuous reciprocating pushing and pulling action, the column 55, centered on the fixed fulcrums of the two center-limiting frames 54, forms a fixed-axis reciprocating swinging motion with uniform rhythm and amplitude. This achieves the continuous circular rotation of the auxiliary rod 52, which is then converted into horizontal reciprocating motion via the eccentric transmission of the cross-shaped frame 24, and further transformed into the fixed-axis reciprocating swinging motion of the column 55. Consequently, the gap between the column 55 and the injection molding machine frame 1 and the injection molding barrel 11 is non-uniformly distributed circumferentially, generating localized high flow velocities in the gap contraction zone and low-flow vortex zones in the gap expansion zone. This circumferentially asymmetrical gap distribution forces the molten material to undergo radial tumbling and axial rotation during the process of being pushed by the threaded rod 13. The folding mechanism alters the effective flow cross-sectional shape at the junction, rapidly entraining the heat from the melt conducted from the injection molding pipe 12 to the near-wall surface of the material flow center. Simultaneously, the insufficiently plasticized low-temperature material in the central area is entrained to the near-wall surface for heating. Subsequently, the fixed-axis reciprocating oscillating motion of the center-limiting frame 54 drives the scraper 57 to reciprocate along the outside of the central support ring frame 501. The movement of the scraper 57 drives the semi-arc block 58 to slide along the interior of the semi-annular groove 56, providing stable guidance and limiting for the movement of the scraper 57 within the central support ring frame 501. During the movement of the scraper 57, it forms a reciprocating collision with the support frame inside the central support ring frame 501, ensuring a continuous and uniform supply of solid granules to the plasticizing zone.

[0064] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An injection molding apparatus for a modular plastic storage cabinet panel, comprising an injection molding machine frame, an injection molding barrel, and an injection melting tube, wherein the injection melting tube is provided with a threaded rod inside, and the threaded rod is used to push the material outward along the inside of the injection melting tube while the injection melting tube heats and melts the material inside, characterized in that: The injection melting tube is equipped with an injection stabilizing component that mates with the threaded rod. The injection stabilizing component is used to divide and merge the material passing through the area and knead it. The injection stabilizing assembly includes a crescent groove inside the injection melting tube and several directional plates outside the threaded rod, with the directional plates and the threaded rod forming a polygonal channel. A main bearing ring is fixedly connected to the crescent groove and the inside of the injection melting tube. A synchronization assembly is provided between the main bearing ring and the several directional plates, and the synchronization assembly is used to drive each directional plate to adjust along the outer angle of the main bearing ring. A cross-shaped corrugated frame is provided at the connection between the injection melting tube and the injection plastic bucket, and the cross-shaped corrugated frame is used to maintain the looseness of the material at the connection. The outer side of the main bearing ring is provided with an interactive component, which is used to cause multi-directional disturbance to the incoming material; A melt-generating assembly is provided between the injection melting tube and the injection molding machine frame, and the melt-generating assembly is used to drive the cross-shaped wave frame to move in multiple dimensions; The synchronization component includes a synchronization ring movably connected to one end of the main bearing ring and second shafts respectively installed on one side of the split plate and the synchronization ring. The two second shafts are connected to a common connecting arm, and the split plate is finely adjusted along one end of the main bearing ring by means of the connecting arm. The first shaft is fixedly connected to the side of the main bearing ring near the split plate, and the split plate is movably sleeved on the outside of the first shaft. The split plate moves stably along one end of the main bearing ring through the first shaft. The interactive component includes an interactive frame and two symmetrically fixedly connected to one end of the main bearing ring. The interactive frame is arched with an inclined structure on its side. Two torsion arms are installed on the side of the interactive frame near the main bearing ring, and one end of the torsion arm extends into the interior of the stabilizing seat and forms a hinge with the stabilizing seat inside. The interactive frame forms a slope fit with one side of the hinge seat through the torsion arms, so as to push the interactive frame during the horizontal movement of the hinge seat. Two symmetrical reset components are provided between the crescent-shaped groove and the interaction frame; Each of the reset components includes a centering column fixedly connected inside the crescent groove and a centering seat fixedly connected to the top of the interactive frame. One end of the centering column is provided with a sliding groove, and the opening of the sliding groove is flared. A reset spring is fixedly connected inside the sliding groove. A ball is installed at one end of the reset spring. The end of the centering seat near the ball is provided with a circular slot that matches the curvature of the ball's surface.

2. The injection molding device for a modular plastic storage cabinet panel according to claim 1, characterized in that: An electric push rod is fixedly connected to the outside of the injection melting tube, a rocker arm is hinged to the outside of the synchronization ring, the telescopic end of the electric push rod extends into the inside of the crescent groove and is fixedly connected to a hinge seat, and the outside of the hinge seat is set as an inclined structure. The top of the rocker arm extends into the interior of the hinge seat and forms a hinge with the hinge seat inside. The synchronizing ring has a sliding groove on the side near the connecting arm, and one end of the main bearing ring is fixedly connected to a sliding rod, which is located inside the sliding groove and forms a sliding contact with the sliding groove inside.

3. The injection molding device for a modular plastic storage cabinet panel according to claim 1, characterized in that: The injection molding assembly includes a central support ring frame fixedly connected inside the injection molding barrel and two auxiliary rods symmetrically installed at both ends of the cross-shaped frame. The central support ring frame is designed as a conical structure and is hollow inside. Two symmetrical centering columns are movably connected inside the injection molding frame. The centering columns are used to stably support the auxiliary rods inside the injection molding frame. A servo motor is fixedly connected to the outside of the injection molding frame, and the output end of the servo motor extends into the inside of the injection molding frame and forms a fixed connection with one of the centering columns. Both auxiliary rods have a speed-passing groove on one side for the reciprocating motion of the cross-shaped wave frame.

4. The injection molding device for a modular plastic storage cabinet panel according to claim 3, characterized in that: The injection molding barrel and the injection molding machine frame are also equipped with two symmetrical center-limiting frames. The top of one of the center-limiting frames extends into the interior of the middle support ring frame and forms a sleeve with the middle support ring frame inside. The bottom of the other center-limiting frame is movably connected to the interior of the injection molding machine frame. The two center-limiting frames are connected by a column, and the cross-shaped frame is movably sleeved on the outside of the column.

5. The injection molding device for a modular plastic storage cabinet panel according to claim 4, characterized in that: The interior of the middle support climbing ring frame is also provided with a semi-circular groove. The top of one of the center limiting frames extends to the outside of the middle support climbing ring frame and is fixedly connected to a scraper. One end of the scraper is fixedly connected to a semi-arc block, which is located inside the semi-circular groove and forms a sliding contact with the semi-circular groove inside.

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