Forming mold for injection molding of recycled plastic

Abstract

The invention discloses a forming mold for injection molding of recycled plastics, and belongs to the technical field of injection molding of recycled plastics, the forming mold comprises a mounting table, one side of the top of the mounting table is fixedly connected with a fixed seat, and one side of the fixed seat is fixedly connected with a fixed mold seat. According to the plastic injection molding device, a plastic solution in a plastic heating and mixing barrel can be conveyed into an injection molding opening through a screw feeding unit, the plastic solution entering the injection molding opening can be continuously disturbed and mixed under the action of a second spiral groove, the melt pressure in the plastic solution can be evenly distributed, and the local high-pressure or low-pressure area in the plastic solution is reduced; the pressure fluctuation is reduced, the flowing effect and the flowing stability of the plastic solution in the injection molding process are improved in an auxiliary mode, along with continuous flowing of the plastic solution, the plastic solution flowing in the center of the turbine can make the turbine rotate, and the stress distribution of the injection molding solution can be further homogenized in the rotating process of the turbine; and the surface defects of the product are further reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of recycled plastic injection molding, and particularly relates to a molding die for recycled plastic injection molding. Background Art

[0002] Recycled plastic refers to plastic materials that are reprocessed from waste plastic products or plastic waste through processes such as collection, classification, cleaning, crushing, and melting. To reduce resource waste and environmental pollution, after plastic recycling and treatment, it needs to be molded into products again through an injection mold.

[0003] For example, in a Chinese patent document (CN118269302B) on a mold structure for improving the fluidity of plastic, which relates to the technical field of injection molds, it includes a base, a fixed seat provided on one side of the top of the base, and a positioning seat provided on the other side of the top of the base. A fixed mold is provided inside the fixed seat, and a movable mold cooperating with the fixed mold is installed in the middle between the fixed seat and the positioning seat; a shaping groove is opened on the inner side surface of the fixed mold, and a sealing mechanism is installed inside the shaping groove; a closing mold is provided in the fitting groove; injection grooves are equidistantly opened on the circumferential side of the inner end surface of the closing mold, and a pushing mechanism is provided inside the injection grooves; a stabilizing mechanism is also provided between the fitting groove and the closing mold; through the cooperation of the fixed mold, the movable mold, the closing mold, and the sealing mechanism, this invention facilitates the uniform molding of the wall thickness when injecting plastic injection parts, and through the settings of the sealing mechanism and the pushing mechanism, it can achieve the effect of uniform injection during the process of retracting, effectively improving the wall thickness uniformity of the injection parts inside the mold. However, during the use of this device, after the recycled plastic undergoes processing and degradation, its fluidity may be relatively weak, resulting in uneven flow when filling the mold cavity, and then inconsistent subsequent cooling rates, increasing the internal stress and affecting the quality of the finished product. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to propose a molding die for recycled plastic injection molding to solve the problem that in the prior art during use, after the recycled plastic undergoes processing and degradation, its fluidity may be relatively weak, resulting in uneven flow when filling the mold cavity, and then inconsistent subsequent cooling rates, increasing the internal stress and affecting the quality of the finished product.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A molding die for recycling plastic injection molding, including an installation table, one side of the top of the installation table is fixedly connected with a fixed seat, one side of the fixed seat is fixedly connected with a fixed mold base, the side of the fixed mold base away from the fixed seat is connected with a fixed mold, the connection part of the fixed mold, the fixed mold base and the fixed seat is provided with the same injection port, one side of the injection port is provided with an auxiliary injection port, a sealing component is arranged between the injection port and the auxiliary injection port, a pressurizing component is arranged on one side of the sealing component, and a flow disturbing component is arranged inside the injection port;

[0007] The flow disturbing component includes a circular plate and a second spiral groove. The second spiral groove is located on the inner peripheral side of the injection port. The circular plate is arranged on the side opposite to the auxiliary injection port, and the circular plate is fixedly connected inside the injection port through a fixing rod. One side of the circular plate is provided with a turbine. The turbine is arranged on the side opposite to the second spiral groove. The cross-sectional shape of the turbine is conical, and a plurality of inclined grooves are arranged in a circumferential array inside the turbine.

[0008] As a further description of the above technical solution:

[0009] The auxiliary injection port is located inside the fixed mold. One side of the injection port away from the auxiliary injection port is provided with a screw feeding unit. The bottom of the screw feeding unit is fixedly connected with the top of the installation table through a support frame. One side of the auxiliary injection port away from the injection port is provided with a moving mold unit. The moving mold unit is slidably connected to the top of the installation table. A cavity is opened inside the fixed mold, and the cavity is communicated with the fixed mold base through a rectangular through hole.

[0010] As a further description of the above technical solution:

[0011] The sealing component includes a hydraulic cylinder. The bottom of the hydraulic cylinder is fixedly connected with the top of the fixed mold base. One end of the output shaft of the hydraulic cylinder extends into the fixed mold base and is fixedly connected with a mounting plate. The cross-sectional shape of the mounting plate is T-shaped. One side of the bottom of the mounting plate is fixedly connected with a first conical block. One side of the first conical block away from the mounting plate is provided with a second conical block.

[0012] As a further description of the above technical solution:

[0013] One side of the second conical block away from the first conical block extends into the fixed mold and is fixedly connected with a connecting plate. Both the second conical block and the connecting plate are slidably connected inside the fixed mold. One side of the connecting plate away from the second conical block is fixedly connected with a first spring. The other side of the first spring is fixedly connected with the inner wall of the fixed mold.

[0014] As a further description of the above technical solution:

[0015] A hollow cylinder is provided below the first spring. One end of the hollow cylinder is fixedly connected to the connecting plate. On the inner side of the hollow cylinder far from the connecting plate, a connecting rod is provided. One side of the connecting rod far from the hollow cylinder is fixedly connected to a first gear through a round rod, and the round rod is fixedly connected to the inner wall of the fixed mold through a support seat. A first spiral groove is formed on the outer side of the inner part of the connecting rod, and a guide rod is arranged inside the first spiral groove. One side of the guide rod far from the first spiral groove is fixedly connected to the inner wall of the hollow cylinder.

[0016] As a further description of the above technical solution:

[0017] The bottom of the first gear is meshed with an annular gear. An annular block is fixedly connected inside the annular gear. A plurality of second chutes and closing plates are circumferentially arranged on one side of the annular block. The second chutes are located inside the annular block, and the closing plates are slidably connected inside the second chutes through limit rods.

[0018] As a further description of the above technical solution:

[0019] The annular block, the auxiliary injection port and the injection port are on the same axis. The cross-sectional shape of the auxiliary injection port is set to be T-shaped, and a first chute is formed on one side of the inner part of the auxiliary injection port. The first chute is arranged on the side opposite to the closing plate, and the cross-sectional shape of the first chute is set to be regular hexagon. The closing plate is slidably connected inside the first chute through a limit slider.

[0020] As a further description of the above technical solution:

[0021] The pressure boosting component includes a connecting box. One side of the connecting box is fixedly connected to the outer wall of the fixed seat, and the connecting box is arranged on the side opposite to the screw feeding unit. Limit through holes are formed at the joints of the connecting box, the fixed seat and the fixed mold base. The cross-sectional shape of the limit through holes is set to be T-shaped. A rotating shaft is rotatably connected to one side of the inner part of the connecting box. A third gear is fixedly connected to the top side of the outer part of the rotating shaft. One side of the third gear is meshed with a first rack. The other end of the first rack extends into the fixed mold base and is fixedly connected to a vertical plate. The vertical plate and the first rack are slidably connected inside the limit through holes.

[0022] As a further description of the above technical solution:

[0023] Second springs are arranged on both sides of the first rack. The two sides of the second springs are respectively fixedly connected to the vertical plate and the inner wall of the fixed seat. A roller is connected to the side of the vertical plate far from the first rack through a mounting frame. A third tapered block is arranged on the other side of the roller. The side of the third tapered block far from the roller is fixedly connected to the outer wall of the mounting plate.

[0024] As a further description of the above technical solution:

[0025] The bottom end of the rotating shaft extends into the internal part of the screw feeding unit and is provided with a cylinder. The cylinder is rotatably connected to the outer peripheral side of the end of the screw inside the screw feeding unit. The cylinder is fixedly connected to the inner wall of the barrel of the screw feeding unit through a connecting block. The rotating shaft is rotatably connected inside the cylinder and the connecting block. A third gear is arranged on one side inside the cylinder. The third gear is fixedly connected to the outer peripheral side of the rotating shaft. And a second rack is meshed with one side of the third gear. The second rack is fixedly connected with a circular block on the side far away from the third gear. The circular block is slidably sealed inside the cylinder and is arranged on the side far away from the screw inside the screw feeding unit.

[0026] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, through the arranged flow disturbance component, the screw feeding unit conveys the plastic solution inside the plastic heating and mixing barrel to the inside of the injection port. The plastic solution entering the inside of the injection port will continuously generate disturbance and mixing under the action of the second spiral groove, which can evenly distribute the melt pressure inside the plastic solution, reduce the local high-pressure or low-pressure areas inside it, and further reduce its pressure fluctuation, assisting in improving the flow effect and flow stability during the injection process of the plastic solution. And it also assists in ensuring the temperature uniformity of the center and the outside of the plastic solution inside the injection port, enabling the plastic solution to evenly enter the mold cavity inside the moving mold unit and contact the inner wall of the mold cavity of the moving mold unit, which can evenly distribute its shear stress, assisting in reducing the internal stress concentration phenomenon of the subsequent plastic products, and further reducing the warping and cracking phenomena of the products. And as the plastic solution continuously flows, the plastic solution flowing in the central part will act on the turbine and the inclined groove to make the turbine rotate. And during the rotation of the turbine, it will further homogenize the stress distribution of the injection solution, reduce its internal stress phenomenon, and further reduce the surface defects of the products, greatly improving the production quality of the products.

[0028] 2. In the present invention, through the arranged pressure boosting component, during the downward movement of the mounting plate, it will drive the roller, the vertical plate and the first rack to move through the third tapered block, making the third gear drive the rotating shaft and the third gear to rotate, so that the second rack drives the circular block to move towards the outside of the cylinder. At this time, the circular block can provide pressure when the injection port is open for work to assist in increasing the overall injection speed of the plastic solution. When the closing plate is completely opened, the hydraulic cylinder continuously drives the mounting plate, the first tapered block and the third tapered block to move downward. At this time, the second rack will further move the circular block, further increasing the overall injection speed of the plastic solution, and then ensuring the filling speed and charging effect of the mold cavity inside the moving mold unit, thereby ensuring the overall injection quality of the products.

[0029] 3. In the present invention, through the arranged closing component, after the injection molding is completed, the hydraulic cylinder drives the mounting plate and the first conical block to reset. At this time, the first spring drives the connecting plate, the hollow cylinder and the guide rod to reset. At this time, the closing plate will close the injection port, which helps to reduce the gate marks of the subsequent plastic products, thereby reducing the subsequent processing procedures of the product and further improving the overall service performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention;

[0031] Figure 2 is the three-dimensional structure schematic diagram of another perspective of the screw feeding unit and the fixed mold base in the present invention;

[0032] Figure 3 is the internal three-dimensional structure schematic diagram of the fixed mold base and the fixed mold in the present invention;

[0033] Figure 4 is the overall three-dimensional structure schematic diagram of the hollow cylinder and the guide rod in the present invention;

[0034] Figure 5 is the three-dimensional structure schematic diagram of the annular block and the closing plate in the present invention;

[0035] Figure 6 is the three-dimensional structure schematic diagram of another perspective of the auxiliary injection port in the present invention;

[0036] Figure 7 is the internal three-dimensional structure schematic diagram of the injection port in the present invention;

[0037] Figure 8 in the present invention Figure 7 is the partial enlarged structure schematic diagram at position A;

[0038] Figure 9 is the partial three-dimensional structure schematic diagram of the pressure boosting component in the present invention;

[0039] Figure 10 in the present invention Figure 9 is the partial enlarged structure schematic diagram at position B.

[0040] LEGEND DESCRIPTION:

[0041] 1. Mounting table; 2. Fixed seat; 3. Screw feeding unit; 4. Fixed mold base; 5. Fixed mold; 6. Injection port; 7. Sealing component; 701. Hydraulic cylinder; 702. Mounting plate; 703. First chute; 704. First conical block; 705. Second conical block; 706. Connecting plate; 707. First spring; 708. Hollow cylinder; 709. Guide rod; 710. Connecting rod; 711. First gear; 712. Ring gear; 713. Ring block; 714. Second chute; 715. Sealing plate; 8. Turbulence component; 801. Second spiral groove; 802. Circular plate; 803. Turbine; 804. Inclined groove; 9. Boosting component; 901. Connecting box; 902. Rotating shaft; 903. Third gear; 904. First rack; 905. Vertical plate; 906. Second spring; 907. Roller; 908. Third conical block; 909. Cylindrical tube; 910. Third gear; 911. Second rack; 912. Circular block; 10. Auxiliary injection port; 11. Movable mold unit. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0043] Please refer to Figures 1-10 , the present invention provides a technical solution: a molding mold for recycling plastic injection molding, including a mounting table 1, a fixed seat 2 is fixedly connected to one side of the top of the mounting table 1, a fixed mold base 4 is fixedly connected to one side of the fixed seat 2, a fixed mold 5 is connected to the side of the fixed mold base 4 away from the fixed seat 2, the connection between the fixed mold 5, the fixed mold base 4 and the fixed seat 2 is provided with the same injection port 6, an auxiliary injection port 10 is arranged on one side of the injection port 6, a sealing component 7 is arranged between the injection port 6 and the auxiliary injection port 10, a boosting component 9 is arranged on one side of the sealing component 7, and a turbulence component 8 is arranged inside the injection port 6;

[0044] The spoiler assembly 8 includes a circular plate 802 and a second helical groove 801. The second helical groove 801 is located on the inner peripheral side of the injection port 6. The circular plate 802 is arranged on the side opposite to the auxiliary injection port 10, and the circular plate 802 is fixedly connected inside the injection port 6 through a fixing rod. A turbine 803 is arranged on one side of the circular plate 802. The turbine 803 is arranged on the side opposite to the second helical groove 801. The cross-sectional shape of the turbine 803 is conical, and a plurality of inclined grooves 804 are arranged in a circumferential array inside the turbine 803. The auxiliary injection port 10 is located inside the fixed mold 5. A screw feeding unit 3 is arranged on the side of the injection port 6 away from the auxiliary injection port 10. The bottom of the screw feeding unit 3 is fixedly connected to the top of the mounting table 1 through a support frame. A moving mold unit 11 is arranged on the side of the auxiliary injection port 10 away from the injection port 6. The moving mold unit 11 is slidably connected to the top of the mounting table 1. A cavity is opened inside the fixed mold 5, and the cavity is communicated with the fixed mold base 4 through a rectangular through hole.

[0045] Specific implementation method: First, install the mounting table 1 at a suitable position, and install the plastic heating and mixing barrel at a suitable position on the top of the screw feeding unit 3. Then, fix the external moving unit to the moving mold unit 11. When injection molding is required, first make the external moving unit drive the moving mold unit 11 to move towards the fixed mold 5 for mold closing. Then, the screw feeding unit 3 will transport the plastic solution inside the plastic heating and mixing barrel to the inside of the injection port 6. The plastic solution entering the injection port 6 will be continuously disturbed and mixed under the action of the second helical groove 801, which can evenly distribute the melt pressure inside the plastic solution, reduce the local high-pressure or low-pressure areas inside it, and further reduce its pressure fluctuation, assisting in improving the flow stability during the injection molding process of the plastic solution. Moreover, it helps to ensure the temperature uniformity of the center and the outside of the plastic solution inside the injection port 6, so that the plastic solution evenly enters the mold cavity inside the moving mold unit 11 and contacts the inner wall of the mold cavity of the moving mold unit 11, which can evenly distribute its shear stress, assisting in reducing the internal stress concentration phenomenon of the subsequent plastic products, and further reducing the warping and cracking phenomena of the products. As the plastic solution continuously flows, the plastic solution flowing in the central part will act on the turbine 803 and the inclined grooves 804, causing the turbine 803 to rotate. During the rotation of the turbine 803, it will further homogenize the stress distribution of the injection solution, reduce its internal stress phenomenon, and further reduce the surface defects of the products, greatly improving the production quality of the products.

[0046] The closing component 7 includes a hydraulic cylinder 701. The bottom of the hydraulic cylinder 701 is fixedly connected to the top of the fixed mold base 4. One end of the output shaft of the hydraulic cylinder 701 extends into the fixed mold base 4 and is fixedly connected to a mounting plate 702. The cross-sectional shape of the mounting plate 702 is set to be T-shaped. One side of the bottom of the mounting plate 702 is fixedly connected to a first tapered block 704. A second tapered block 705 is arranged on the side of the first tapered block 704 away from the mounting plate 702. The side of the second tapered block 705 away from the first tapered block 704 extends into the fixed mold 5 and is fixedly connected to a connecting plate 706. Both the second tapered block 705 and the connecting plate 706 are slidably connected inside the fixed mold 5. One side of the connecting plate 706 away from the second tapered block 705 is fixedly connected to a first spring 707. The other side of the first spring 707 is fixedly connected to the inner wall of the fixed mold 5. A hollow cylinder 708 is arranged below the first spring 707. One end of the hollow cylinder 708 is fixedly connected to the connecting plate 706. A connecting rod 710 is arranged on the inner side of the hollow cylinder 708 away from the connecting plate 706. One side of the connecting rod 710 away from the hollow cylinder 708 is fixedly connected to a first gear 711 through a round rod, and the round rod is fixedly connected to the inner wall of the fixed mold 5 through a support seat. A first spiral groove is formed on the outer side of the inner part of the connecting rod 710. A guide rod 709 is arranged inside the first spiral groove. One side of the guide rod 709 away from the first spiral groove is fixedly connected to the inner wall of the hollow cylinder 708. The bottom of the first gear 711 is meshed with an annular gear 712. An annular block 713 is fixedly connected inside the annular gear 712. A plurality of second chutes 714 and closing plates 715 are circumferentially arranged on one side of the annular block 713. The second chutes 714 are located inside the annular block 713. The closing plates 715 are slidably connected inside the second chutes 714 through limiting rods. The annular block 713, the auxiliary injection port 10, and the injection port 6 are on the same axis. The cross-sectional shape of the auxiliary injection port 10 is set to be T-shaped, and a first chute 703 is formed on one side of the inner part of the auxiliary injection port 10. The first chute 703 is arranged on the side opposite to the closing plate 715. The cross-sectional shape of the first chute 703 is set to be regular hexagon. The closing plate 715 is slidably connected inside the first chute 703 through a limiting slider.

[0047] Specific implementation: At the same time, the hydraulic cylinder 701 is started, and the mounting plate 702 and the first conical block 704 are driven to move downward by the hydraulic cylinder 701. During the downward movement, the first conical block 704 will squeeze the second conical block 705, the connecting plate 706 and the first spring 707. At this time, the connecting plate 706 will drive the hollow cylinder 708 and the guide rod 709 to move horizontally. During the movement, the guide rod 709 will drive the connecting rod 710 and the first gear 711 to rotate under the action of the first spiral groove. The linkage effect between the first gear 711 and the annular block 713 is utilized to transmit power to the annular block 713, so that the annular block 713 rotates. During the movement, the annular block 713 causes the multiple closing plates 715 to move away from the center of the injection port 6 under the action of the second slide groove 714, the guide rod 709, the limit slider and the first slide groove 703, thereby releasing the locking mechanism. The closed state of the injection port 6 allows the plastic solution inside the injection port 6 to be injected into the movable mold unit 11 through the auxiliary injection port 10. After the injection is completed, the hydraulic cylinder 701 drives the mounting plate 702 and the first conical block 704 to reset. At this time, the first spring 707 drives the connecting plate 706, the hollow cylinder 708 and the guide rod 709 to reset. At this time, the closing plate 715 will close the injection port 6, which helps reduce the gate marks of subsequent plastic products, thereby reducing the subsequent processing steps of the product and further improving the overall performance of the product. Limit guide rods can be set on both sides of the hydraulic cylinder 701 according to actual needs, so that the bottom end of the limit guide rod is fixedly connected to the top of the mounting plate 702, and the limit guide rod is slidably connected to the fixed mold base 4. The hydraulic cylinder 701 can be precisely controlled according to the external oil pump and sensor. This technology is an existing known technology, so this application will not elaborate on it in detail.

[0048] The pressure boosting assembly 9 includes a connection box 901. One side of the connection box 901 is fixedly connected to the outer wall of the fixed seat 2, and the connection box 901 is arranged on the side opposite to the screw feeding unit 3. Limiting through holes are opened at the joints of the connection box 901, the fixed seat 2 and the fixed mold base 4. The cross-sectional shape of the limiting through hole is set as a T shape. A rotating shaft 902 is rotatably connected to one side inside the connection box 901. A third gear 903 is fixedly connected to the top side of the outer part of the rotating shaft 902. A first rack 904 is meshed and connected to one side of the third gear 903. The other end of the first rack 904 extends into the fixed mold base 4 and is fixedly connected to a vertical plate 905. The vertical plate 905 and the first rack 904 slide in the limiting through hole. Second springs 906 are arranged on both sides of the first rack 904. The two sides of the second springs 906 are respectively fixedly connected to the vertical plate 905 and the inner wall of the fixed seat 2. A roller 907 is connected to the side of the vertical plate 905 away from the first rack 904 through a mounting bracket. A third tapered block 908 is arranged on the other side of the roller 907. The side of the third tapered block 908 away from the roller 907 is fixedly connected to the outer wall of the mounting plate 702. The bottom end of the rotating shaft 902 extends into the screw feeding unit 3 and is provided with a cylinder 909. The cylinder 909 is rotatably connected to the outer peripheral side of the end of the screw inside the screw feeding unit 3. The cylinder 909 is fixedly connected to the inner wall of the screw barrel of the screw feeding unit 3 through a connecting block. The rotating shaft 902 is rotatably connected inside the cylinder 909 and the connecting block. A third gear 910 is arranged on one side inside the cylinder 909. The third gear 910 is fixedly connected to the outer peripheral side of the rotating shaft 902. A second rack 911 is meshed and connected to one side of the third gear 910. A circular block 912 is fixedly connected to the side of the second rack 911 away from the third gear 910. The circular block 912 slides and seals inside the cylinder 909, and the circular block 912 is arranged on the side away from the screw inside the screw feeding unit 3.

[0049] Specific implementation manner: During the downward movement of the mounting plate 702, the third conical block 908 will drive the roller 907, the vertical plate 905, the second spring 906 and the first rack 904 to move. By using the linkage effect between the first rack 904 and the third gear 903, the power is transmitted to the third gear 903, causing the third gear 903 to drive the rotating shaft 902 to rotate. Then, by using the linkage effect between the rotating shaft 902 and the third gear 910, the power is transmitted to the second rack 911, causing the second rack 911 to drive the circular block 912 to move outward from the cylinder 909. At this time, the circular block 912 can provide pressure when the injection port 6 is open for work, so as to assist in increasing the overall injection speed of the plastic solution. When the closing plate 715 is completely opened, the hydraulic cylinder 701 continuously drives the mounting plate 702, the first conical block 704 and the third conical block 908 to move downward. At this time, the second conical block 705 will not move, and the acting force of the third conical block 908 will further cause the roller 907 and the first rack 904 to move. At this time, the second rack 911 will further move the circular block 912, further increasing the overall injection speed of the plastic solution, thereby ensuring the filling speed and charging effect of the mold cavity inside the moving mold unit 11, and thus ensuring the overall injection molding quality of the product. The diameters of the cylinder 909 and the circular block 912 can be set according to actual needs, and the second rack 911 can be slidably connected to the inside of the screw in the cylinder 909 and the screw feeding unit 3 through a slider.

[0050] Working principle: When in use, first install the mounting table 1 in a suitable position, and install the plastic heating and mixing barrel at a suitable position on the top of the screw feeding unit 3. Then, fix the external moving unit to the moving mold unit 11. When injection molding is required, first make the external moving unit drive the moving mold unit 11 to move towards the fixed mold 5 for mold closing. Then, the plastic solution in the plastic heating and mixing barrel will be conveyed into the injection port 6 through the screw feeding unit 3. The plastic solution entering the injection port 6 will be continuously disturbed and mixed under the action of the second spiral groove 801, and the melt pressure inside the plastic solution can be evenly distributed. As the plastic solution continues to flow, the plastic solution flowing in the central part will act on the turbine 803 and the inclined groove 804, causing the turbine 803 to rotate. During the rotation of the turbine 803, the stress distribution of the injection solution will be further homogenized;

[0051] At the same time, the hydraulic cylinder 701 is started, and the mounting plate 702 and the first conical block 704 are driven to move downward by the hydraulic cylinder 701. The first conical block 704 will squeeze the second conical block 705, the connecting plate 706 and the first spring 707 during the downward movement. At this time, the connecting plate 706 will drive the hollow cylinder 708 and the guide rod 709 to move horizontally. The guide rod 709 will drive the connecting rod 710 and the first gear 711 to rotate under the action of the first spiral groove during the movement. The linkage effect between the first gear 711 and the annular block 713 is used to transmit power to the annular block 713, so that the annular block 713 rotates. During the movement, the annular block 713 moves the plurality of closing plates 715 away from the center of the injection port 6 under the action of the second slide groove 714, the guide rod 709, the limit slider and the first slide groove 703, thereby releasing the closed state of the injection port 6 and allowing the plastic solution inside the injection port 6 to be injected into the movable mold unit 11 through the auxiliary injection port 10.

[0052] The mounting plate 702 will drive the third conical block 908 to move the roller 907, the vertical plate 905, the second spring 906 and the first rack 904 during the downward movement. The linkage effect between the first rack 904 and the third gear 903 is used to transmit power to the third gear 903, so that the third gear 903 drives the rotating shaft 902 to rotate. Then, the linkage effect between the rotating shaft 902 and the third gear 910 is used to transmit power to the second rack 911, so that the second rack 911 drives the circular block 912 to move toward the outside of the cylinder 909. At this time, the circular block 912 can provide pressure when the injection port 6 is open. When the closing plate 715 is fully opened, the hydraulic cylinder 701 continuously drives The mounting plate 702, the first conical block 704 and the third conical block 908 move downward, at which time the second conical block 705 does not move, and the force of the third conical block 908 further moves the roller 907 and the first rack 904, at which time the second rack 911 further moves the circular block 912, further increasing the overall injection speed of the plastic solution. When the injection molding is completed, the hydraulic cylinder 701 drives the mounting plate 702 and the first conical block 704 to reset, at which time the first spring 707 drives the connecting plate 706, the hollow cylinder 708 and the guide rod 709 to reset, and at which time the closing plate 715 closes the injection port 6, thereby helping to reduce the gate marks of subsequent plastic products, and is easy to use.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A recycled plastic injection molding die, comprising a mounting table (1), characterized in that: A fixing seat (2) is fixedly connected to one side of the top of the mounting platform (1), a fixed mold seat (4) is fixedly connected to one side of the fixing seat (2), a fixed mold seat (5) is connected to the side of the fixed mold seat (4) away from the fixing seat (2), a common injection port (6) is provided at the connection between the fixed mold seat (5), the fixed mold seat (4) and the fixing seat (2), an auxiliary injection port (10) is provided on one side of the injection port (6), a closing component (7) is provided between the injection port (6) and the auxiliary injection port (10), a boosting component (9) is provided on one side of the closing component (7), and a spoiler component (8) is provided inside the injection port (6); The spoiler assembly (8) comprises a circular plate (802) and a second spiral groove (801), wherein the second spiral groove (801) is located on the inner circumference of the injection port (6), the circular plate (802) is arranged on a side relative to the auxiliary injection port (10), and the circular plate (802) is fixedly connected to the inside of the injection port (6) via a fixing rod, a turbine (803) is arranged on one side of the circular plate (802), and the turbine (803) is arranged on a side relative to the second spiral groove (801), the cross-sectional shape of the turbine (803) is arranged to be conical, and a plurality of inclined grooves (804) are arranged in a circular array inside the turbine (803).

2. The recycled plastic injection molding die according to claim 1, characterized in that: The auxiliary injection port (10) is located inside the fixed mold (5); a screw feeding unit (3) is arranged on the side of the injection port (6) away from the auxiliary injection port (10); the bottom of the screw feeding unit (3) is fixedly connected to the top of the mounting platform (1) through a support frame; a movable mold unit (11) is arranged on the side of the auxiliary injection port (10) away from the injection port (6); the movable mold unit (11) is slidably connected to the top of the mounting platform (1); a cavity is opened inside the fixed mold (5); and the cavity is connected to the fixed mold base (4) through a rectangular through hole.

3. The recycled plastic injection molding mold according to claim 1, characterized in that: The sealing component (7) comprises a hydraulic cylinder (701), the bottom of the hydraulic cylinder (701) is fixedly connected to the top of the fixed die seat (4), one end of the output shaft of the hydraulic cylinder (701) extends into the interior of the fixed die seat (4) and is fixedly connected to a mounting plate (702), the cross-sectional shape of the mounting plate (702) is set to be T-shaped, a first conical block (704) is fixedly connected to one side of the bottom of the mounting plate (702), and a second conical block (705) is arranged on the side of the first conical block (704) away from the mounting plate (702).

4. The recycled plastic injection molding die according to claim 3, characterized in that: The second conical block (705) extends to the interior of the fixed mold (5) on a side away from the first conical block (704) and is fixedly connected to a connecting plate (706); the second conical block (705) and the connecting plate (706) are both slidably connected to the interior of the fixed mold (5); the connecting plate (706) is fixedly connected to a first spring (707) on a side away from the second conical block (705); the other side of the first spring (707) is fixedly connected to the inner wall of the fixed mold (5).

5. The recycled plastic injection molding die according to claim 4, characterized in that: A hollow cylinder (708) is arranged below the first spring (707), one end of the hollow cylinder (708) is fixedly connected to the connecting plate (706), a connecting rod (710) is arranged on the inner side of the hollow cylinder (708) away from the connecting plate (706), the side of the connecting rod (710) away from the hollow cylinder (708) is fixedly connected to the first gear (711) through a round rod, and the round rod is fixedly connected to the inner wall of the fixed mold (5) through a support seat, a first spiral groove is opened on the inner and outer sides of the connecting rod (710), a guide rod (709) is arranged inside the first spiral groove, and the guide rod (709) is fixedly connected to the inner wall of the hollow cylinder (708) on the side away from the first spiral groove.

6. The recycled plastic injection molding die according to claim 5, characterized in that: The bottom of the first gear (711) is meshedly connected with a ring gear (712), and a ring block (713) is fixedly connected inside the ring gear (712). A plurality of second slide grooves (714) and closing plates (715) are distributed in a circular array on one side of the ring block (713), and the second slide groove (714) is located inside the ring block (713), and the closing plate (715) is slidably connected inside the second slide groove (714) via a limiting rod.

7. The recycled plastic injection molding die according to claim 6, characterized in that: The annular block (713), the auxiliary injection port (10) and the injection port (6) are located on the same axis, the cross-sectional shape of the auxiliary injection port (10) is set to be T-shaped, and a first slide groove (703) is opened on one side inside the auxiliary injection port (10), the first slide groove (703) is set on the side relative to the closing plate (715), the cross-sectional shape of the first slide groove (703) is set to be a regular hexagon, and the closing plate (715) is slidably connected to the inside of the first slide groove (703) through a limiting slider.

8. The recycled plastic injection molding die according to claim 3, characterized in that: The booster assembly (9) comprises a connection box (901), one side of which is fixedly connected to the outer wall of the fixed seat (2), and the connection box (901) is arranged on a side opposite to the screw feeding unit (3). A limiting through hole is provided at the joints of the connection box (901), the fixed seat (2) and the fixed die seat (4), and the cross-sectional shape of the limiting through hole is arranged to be T-shaped. A rotating shaft (902) is rotatably connected to one side of the interior of the connection box (901), and a third gear (903) is fixedly connected to the external top side of the rotating shaft (902). A first rack (904) is meshedly connected to one side of the third gear (903), and the other end of the first rack (904) extends to the interior of the fixed die seat (4) and is fixedly connected to a vertical plate (905), and the vertical plate (905) and the first rack (904) are slidably connected to the interior of the limiting through hole.

9. The recycled plastic injection molding die according to claim 8, characterized in that: A second spring (906) is provided on both sides of the first rack (904), and the second spring (906) is fixedly connected to the vertical plate (905) and the inner wall of the fixed seat (2) on both sides respectively; the vertical plate (905) is connected to a roller (907) via a mounting frame on the side away from the first rack (904); a third conical block (908) is provided on the other side of the roller (907); and the third conical block (908) is fixedly connected to the outer wall of the mounting plate (702) on the side away from the roller (907).

10. The recycled plastic injection molding mold according to claim 9, characterized in that: The bottom end of the rotating shaft (902) extends to the interior of the screw feeding unit (3) and is provided with a cylinder (909). The cylinder (909) is rotatably connected to the outer peripheral side of the end of the screw inside the screw feeding unit (3). The cylinder (909) is fixedly connected to the inner wall of the screw barrel of the screw feeding unit (3) through a connecting block. The rotating shaft (902) is rotatably connected to the inside of the cylinder (909) and the connecting block. A third gear (910) is provided on one side of the inside of the cylinder (909). The third gear (910) is fixedly connected to the outer peripheral side of the rotating shaft (902), and one side of the third gear (910) is meshingly connected with a second rack (911). The second rack (911) is fixedly connected to a circular block (912) on a side away from the third gear (910). The circular block (912) is slidably sealed inside the cylinder (909), and the circular block (912) is provided on a side of the screw away from the inside of the screw feeding unit (3).

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