Plastic injection molding device and method thereof

Abstract

The present invention discloses a plastic injection molding device and method thereof, belonging to a frame in the field of injection molding technology, wherein a molding mold is arranged on the frame, a hydraulic drive mechanism is arranged on the frame, the output end of the hydraulic drive mechanism is connected to the molding mold, a heating treatment cylinder is connected to the frame, and the discharge end of the heating treatment cylinder is connected to the molding mold. In the present invention, a connecting frame, a first baffle, a second baffle, an air outlet pipe, a rotating shaft, an extension pipe, an air outlet hole and a second air hole are adopted, the water on the surface of the raw material is evaporated during the heating process, and the gas containing water flows out of the feeding cylinder through the second air hole, and the rotating shaft and the extension pipe rotate while turning the raw material upward, so that the raw material can be fully contacted with the hot air, and the raw material can be smoothly dried, and the raw material can be mixed more fully and evenly during the drying process, and the situation that the water on the surface of the raw material affects the product quality can be avoided to a certain extent.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and in particular relates to a plastic injection molding device and a method thereof. Background Art

[0002] Injection molding is a common plastic processing method. Its basic process is to heat the plastic to a molten state, then inject it into a closed mold under pressure, and then cool and shape it to obtain the desired plastic product. This method is suitable for processing products with complex shapes, precise dimensions or with inserts. It has high production efficiency and is suitable for most thermoplastics and some thermosetting plastics.

[0003] The disadvantage of the prior art is that the raw materials such as plastics and additives required for injection molding may become damp during storage or transportation, resulting in obvious moisture on their surface. The moisture will evaporate into water vapor at high temperature. If it is not completely discharged during the plastic melting process, bubbles or holes will be formed in the product, affecting the appearance and strength of the product. The mixing of plastics and additives is achieved by the heating and extrusion step of the raw materials. The melted plastics and additives are evenly mixed. During the mixing process, obvious polymerization between plastics or additives may occur, affecting the uniform mixing.

[0004] Based on this, the present invention designs a plastic injection molding device and method thereof to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that raw materials such as plastics and additives required for injection molding may become wet during storage or transportation, resulting in obvious moisture on their surfaces. The mixing part of the plastics and additives is achieved by heating and extruding the raw materials, and the melted plastics and additives are evenly mixed. The mixing process may result in obvious polymerization between the plastics or additives, affecting the uniform mixing. A plastic injection molding device and method are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A plastic injection molding device, comprising a frame, a molding mold is arranged on the frame, a hydraulic drive mechanism is arranged on the frame, an output end of the hydraulic drive mechanism is connected to the molding mold, a heating treatment cylinder is connected to the frame, a discharge end of the heating treatment cylinder is communicated with the molding mold, a right end of the heating treatment cylinder is connected to a hydraulic injection mechanism, the hydraulic injection mechanism is connected to the frame, a feeding cylinder is communicated with the hydraulic injection mechanism, a gas circulation mechanism is arranged on the heating treatment cylinder, a support seat is connected to the gas circulation mechanism, a fan assembly is connected to the support seat, a middle pipe is communicated with the side of the fan assembly, the middle pipe is communicated with the gas circulation mechanism, a gas outlet pipe is communicated with the back of the fan assembly, and a rotation control mechanism is arranged at the other end of the gas outlet pipe;

[0008] The rotation control mechanism is arranged on the feeding barrel, and a rotating shaft is connected under the rotation control mechanism, and a spiral blade is arranged on the part of the side of the rotating shaft located in the feeding barrel, and an extension tube is connected to the side of the rotating shaft, and a rotating disk is arranged outside the rotating shaft, and an extrusion contact disk is connected to the rotating disk, and a sealing and cleaning mechanism is slidably connected to the extrusion contact disk, and a sliding groove is provided on the side of the inner wall of the feeding barrel, and the sealing and cleaning mechanism is slidably arranged in the sliding groove, and two sliding cavities are provided on the inner wall of the sliding groove, and the sealing and cleaning mechanism is provided in the sliding cavity, and a second air hole connected to the sliding groove is provided on the side of the feeding barrel, and a feeding pipe is provided on both sides of the feeding barrel, and a hopper is provided on the top of the feeding pipe, and an air collecting frame covering the outside of the second air hole is provided on the side of the feeding barrel, and an exhaust pipe is connected to the side of the air collecting frame, and an air outlet head is provided at the end of the exhaust pipe, and a discharge channel is provided in the frame, and the air outlet head is provided in the discharge channel.

[0009] As a further description of the above technical solution:

[0010] The inner wall of the discharge channel is arranged in an inclined shape, the gas outlet head is arranged along the inclined wall of the discharge channel, the front of the frame is located at the lower side of the discharge channel and is connected with a collection box, and the exhaust pipe is arranged at the front of the frame.

[0011] As a further description of the above technical solution:

[0012] An air storage cavity is arranged inside the rotating shaft, the extension tube is communicated with the air storage cavity, an air outlet is arranged outside the extension tube, and the extension tube is located between the spiral leaves.

[0013] As a further description of the above technical solution:

[0014] An extension slide groove is provided on the lower side of the inner wall of the slide groove, and the extension slide groove is arranged in an inclined shape. A protrusion is provided on the upper side of the extrusion contact disk. A bearing is provided outside the rotating shaft, and the bearing passes through the center position of the circle arranged on the feeding barrel.

[0015] As a further description of the above technical solution:

[0016] The gas circulation mechanism includes a connecting frame connected to the heating treatment cylinder, the connecting frame is set to be arc-shaped, and the arc surface of the connecting frame fits on the heating treatment cylinder, the supporting seat is connected to the connecting frame, and a plurality of first partitions and a plurality of second partitions are provided in the connecting frame. The front end of the first partition is connected to the inner wall of the connecting frame, and the rear end of the second partition is connected to the inner wall of the connecting frame. The first partition and the second partition cooperate to divide the inner wall space of the connecting frame into a serpentine channel. The intermediate tube is connected to the connecting frame, and a filter screen is penetrated through the left side of the connecting frame.

[0017] As a further description of the above technical solution:

[0018] The rotation control mechanism includes a driving assembly connected to the feeding barrel, the output shaft of the driving assembly is connected to a first gear, the first gear is externally meshed with a second gear, the second gear is arranged at the top end of the rotating shaft, and a rotating joint is passed through the second gear.

[0019] As a further description of the above technical solution:

[0020] The rotary joint is communicated with the air storage cavity, the rotary joint is communicated with the air outlet pipe, and the rotary joint is communicated with the inside of the feeding cylinder through the air storage cavity, the extension pipe and the air outlet hole.

[0021] As a further description of the above technical solution:

[0022] The blocking and cleaning mechanism includes a contact rod slidably connected to the extrusion contact disk, the lower end of the contact rod is connected to a sliding plate, the sliding plate is slidably arranged in a sliding groove, the sliding plate blocks one end of the second air hole located in the sliding groove, a first air hole corresponding to the second air hole is opened on the side of the sliding plate, and two movable connection components are connected to the sliding plate, and the movable connection components are connected in the sliding cavity.

[0023] As a further description of the above technical solution:

[0024] The movable connection component includes a vertical rod connected to a sliding plate, a guide sleeve is slidably connected to the outside of the vertical rod, the guide sleeve is connected to a sliding cavity, the top end of the vertical rod is connected to a circular plate, the circular plate is connected to an elastic component, and the other end of the elastic component is connected to the sliding cavity.

[0025] A method for using a plastic injection molding device, the method comprising the following steps:

[0026] Put the raw materials and additives into the feeding barrel through the hopper, and control the fan assembly to work. At this time, the heat dissipated during the heating and extrusion of the raw materials in the heating treatment barrel heats the gas in the connecting frame. The gas is sucked by the fan assembly through the filter screen and enters the connecting frame. Due to the cooperation of the first partition and the second partition, the gas enters the fan assembly through the serpentine channel in the connecting frame. The fan assembly passes the heated gas into the gas storage cavity and the extension tube through the rotary joint. The gas enters the feeding barrel through the extension tube and the air outlet. The hot gas enters the feeding barrel to heat the raw materials, thereby achieving dehumidification, drying and preheating of the raw materials.

[0027] When the driving component is working, the first gear controls the second gear and the rotating shaft to rotate. At this time, the rotating shaft controls the spiral blade and the extension tube to rotate. When the spiral blade rotates, the raw materials on the lower side of the feeding barrel are lifted upward. At the same time, the rotating extension tube allows hot air to be evenly and comprehensively introduced between the raw materials in the feeding barrel. The continuously turning raw materials can smoothly contact with the hot air. The rotating extrusion contact disk will squeeze the contact rod and the sliding plate to move upward. At this time, the vertical rod slides upward in the guide sleeve, and the elastic component is squeezed and shortened. When the position of the first air hole corresponds to the second air hole, the inside and outside of the feeding barrel are connected through the first air hole and the second air hole. The moisture generated in the feeding barrel due to heating will be discharged through the first air hole and the second air hole along with the gas. After the raised part of the extrusion contact disk is away from the contact rod, the elastic component controls the circular plate and the vertical rod to reset downward;

[0028] The sliding plate moves downward to block and seal the second air hole. At this time, the feeding barrel is in a closed state, ensuring that the heat in the feeding barrel can fully preheat and heat and dry the raw materials. The dried raw materials enter the hydraulic injection mechanism, and the hydraulic injection mechanism sends the raw materials into the heating treatment barrel. The heating treatment barrel heats and melts the raw materials and mixes and extrude them into the molding mold. After the raw materials in the molding mold are cooled and formed, the hydraulic drive mechanism controls the molding mold to separate. At this time, the molded product flows downward through the discharge channel into the collecting box, and the hot air flowing out of the feeding barrel is blown upward along the discharge channel through the exhaust pipe and the air outlet head. The gas acts on the product, and the sliding product is lifted up by the airflow, slowing down its falling speed into the collection box.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] 1. In the present invention, a connecting frame, a first baffle, a second baffle, a fan assembly, an air outlet pipe, a rotating shaft, an extension pipe, an air outlet hole and a second air hole are used. The fan assembly draws external air through the intermediate pipe and the connecting frame. The external air flows through the serpentine channel formed by the first baffle and the second baffle, and is heated by the heat dissipated by the heating treatment cylinder, thereby realizing the recycling of energy and achieving the effect of energy saving. The heated gas enters the feeding cylinder through the rotating shaft and the extension pipe, and the raw materials in the feeding cylinder are evenly heated. The heating process causes the moisture on the surface of the raw materials to evaporate, and the gas containing moisture flows out of the feeding cylinder through the second air hole. At the same time, the rotating shaft and the extension pipe rotate while turning the raw materials upward, so that the raw materials can fully contact with the hot air, thereby realizing the smooth drying of the raw materials, and the raw materials can be mixed more fully and evenly during the drying process, thereby avoiding the situation where the moisture on the surface of the raw materials affects the product quality to a certain extent.

[0031] 2. In the present invention, a sliding plate, a first air hole, a contact rod, an extrusion contact disk, and an elastic component are used. The extrusion contact disk rotates while the rotating shaft rotates. The raised part of the extrusion contact disk rotates one circle to control the contact rod to move up. When the sliding plate is in the lower position, it will block the second air hole, so that the feeding barrel is in a closed state, and in a short time, it is ensured that the heat in the feeding barrel is not easy to dissipate and flow out, so that the heat can be fully utilized to heat and dry the raw materials, and the raw materials are preheated while drying. The preheated raw materials require less time for subsequent heating steps and consume less energy, making the overall injection molding process more efficient and energy-saving. When the sliding plate moves up to make the first air hole correspond to the second air hole, the hot air in the feeding barrel can be smoothly discharged to the outside, realizing a smooth and rapid discharge process of water vapor, and avoiding the secondary impact of water vapor on the raw materials during the drying process.

[0032] 3. In the present invention, an air collecting frame, an exhaust pipe, an air outlet head and a discharge channel are used. When the product falling from the molding mold falls along the discharge channel, the hot air flowing out of the feeding barrel is blown upward along the discharge channel through the exhaust pipe and the air outlet head. The gas acts on the product, and the sliding product is lifted by the airflow, slowing down its falling speed into the collection box, making the falling and collection process of the product safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional structural schematic diagram of a plastic injection molding device and method thereof proposed by the present invention;

[0034] Figure 2 A schematic diagram of the three-dimensional structure of a gas collecting frame of a plastic injection molding device and method thereof proposed by the present invention;

[0035] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a feeding barrel of a plastic injection molding device and method thereof proposed by the present invention;

[0036] Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a sliding groove of a plastic injection molding device and method thereof proposed by the present invention;

[0037] Figure 5 A plastic injection molding device and method thereof proposed by the present invention Figure 4 Schematic diagram of the three-dimensional structure when viewed from above;

[0038] Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a rotating shaft of a plastic injection molding device and method thereof proposed by the present invention;

[0039] Figure 7 A plastic injection molding device and method thereof proposed by the present invention Figure 6 The enlarged structural diagram of part A in the middle;

[0040] Figure 8 A schematic diagram of the three-dimensional structure of a rotation control mechanism of a plastic injection molding device and method thereof proposed by the present invention;

[0041] Fig. 9 A schematic diagram of the three-dimensional structure of a movable connection assembly of a plastic injection molding device and method thereof proposed by the present invention;

[0042] Fig.10 A schematic diagram of the three-dimensional structure of a fan assembly of a plastic injection molding device and method thereof proposed by the present invention;

[0043] Fig.11 A schematic diagram of a three-dimensional cross-sectional structure of a connection frame of a plastic injection molding device and method thereof proposed by the present invention;

[0044] Fig.12 The present invention provides a schematic diagram of a side-view stereoscopic cross-sectional structure of a connection frame of a plastic injection molding device and method thereof.

[0045] Legend:

[0046] 1. Frame; 2. Forming mold; 3. Hydraulic drive mechanism; 4. Heating treatment cylinder; 5. Hydraulic injection mechanism; 6. Feeding cylinder; 7. Discharge channel; 8. Collecting box; 9. Gas circulation mechanism; 91. Connecting frame; 92. Filter screen; 93. First partition; 94. Second partition; 10. Intermediate pipe; 11. Fan assembly; 12. Support seat; 13. Exhaust pipe; 14. Rotation control mechanism; 141. Drive assembly; 142. First gear; 143. Second gear; 144. Rotary joint; 15. Rotary shaft; 16. Bearing; 17 , rotating disk; 18, extrusion contact disk; 19, blocking and cleaning mechanism; 191, contact rod; 192, sliding plate; 193, first air hole; 194, movable connection component; 1941, vertical rod; 1942, guide sleeve; 1943, circular plate; 1944, elastic component; 20, spiral blade; 21, air storage chamber; 22, extension pipe; 23, air outlet; 24, sliding groove; 25, extension slide groove; 26, sliding chamber; 27, feed pipe; 28, hopper; 29, second air hole; 30, air collecting frame; 31, exhaust pipe; 32, air outlet head. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Please refer to the attached Figure 1 -Attached Fig.12 The present invention provides a technical solution: a plastic injection molding device, comprising a frame 1, a molding mold 2 is arranged on the frame 1, a hydraulic drive mechanism 3 is arranged on the frame 1, the output end of the hydraulic drive mechanism 3 is connected to the molding mold 2, a heating treatment cylinder 4 is connected to the frame 1, the discharge end of the heating treatment cylinder 4 is connected to the molding mold 2, the right end of the heating treatment cylinder 4 is connected to a hydraulic injection mechanism 5, the hydraulic injection mechanism 5 is connected to the frame 1, and the hydraulic injection mechanism 5 is connected to a feeding cylinder 6, a gas circulation mechanism 9 is arranged on the heating treatment cylinder 4, a support seat 12 is connected to the gas circulation mechanism 9, a fan assembly 11 is connected to the side of the fan assembly 11, and the middle pipe 10 is connected to the gas circulation mechanism 9, and the back of the fan assembly 11 is connected to an outlet pipe 13, and the other end of the outlet pipe 13 is provided with a rotation control mechanism 14;

[0049] The rotation control mechanism 14 is arranged on the feeding barrel 6, and a rotating shaft 15 is connected to the lower part of the rotation control mechanism 14. A spiral blade 20 is arranged on the side of the rotating shaft 15 located in the feeding barrel 6. An extension tube 22 is connected to the side of the rotating shaft 15. A rotating disk 17 is arranged outside the rotating shaft 15. An extrusion contact disk 18 is connected to the rotating disk 17. A blocking and cleaning mechanism 19 is slidably connected to the extrusion contact disk 18. A sliding groove 24 is opened on the side of the inner wall of the feeding barrel 6. The blocking and cleaning mechanism 19 is slidably arranged in the sliding groove 24. The sliding groove 24 Two sliding cavities 26 are provided on the inner wall, and the sealing and cleaning mechanism 19 is arranged in the sliding cavity 26. A second air hole 29 connected to the sliding groove 24 is provided on the side of the feeding barrel 6. Feed pipes 27 are provided on both sides of the feeding barrel 6, and a hopper 28 is provided at the top of the feed pipe 27. An air collecting frame 30 covering the outside of the second air hole 29 is provided on the side of the feeding barrel 6. An exhaust pipe 31 is connected to the side of the air collecting frame 30, and an air outlet head 32 is provided at the end of the exhaust pipe 31. A discharge channel 7 is provided in the frame 1, and the air outlet head 32 is provided in the discharge channel 7.

[0050] The rotating shaft 15 controls the rotation of the spiral blade 20 and the extension tube 22. When the spiral blade 20 rotates, the raw materials on the lower side of the feeding barrel 6 are lifted upward, and the rotating extension tube 22 is inserted between the raw materials and rotates inside the raw materials, so that the hot air is evenly and comprehensively passed between the raw materials in the feeding barrel 6. The constantly turning raw materials can smoothly contact with the hot air, so that the hot air can fully contact with the raw materials, which is used for drying the raw materials and quickly and evenly preheating them.

[0051] The gas outlet head 32 sets the direction of the discharged gas to be opposite to the trajectory direction of the product in the discharge channel 7. The gas collecting frame 30 and the exhaust pipe 31 are used to collect the gas flowing out of the feeding barrel 6. The hot gas flowing out of the feeding barrel 6 is blown upward along the discharge channel 7 through the exhaust pipe 31 and the gas outlet head 32. The gas acts on the product, and the sliding product is lifted by the airflow, slowing down its falling speed into the collection box 8.

[0052] Specifically, Figure 1 and Figure 2 As shown, the inner wall of the discharge channel 7 is set to be inclined, the air outlet head 32 is set along the inclined wall of the discharge channel 7, the front of the frame 1 is located at the lower side of the discharge channel 7 and is connected to the collection box 8, and the exhaust pipe 31 is set at the front of the frame 1.

[0053] Specifically, Figure 6 and Figure 7 As shown, an air storage chamber 21 is provided inside the rotating shaft 15 , an extension tube 22 is connected to the air storage chamber 21 , an air outlet 23 is opened outside the extension tube 22 , and the extension tube 22 is located between the spiral blades 20 .

[0054] The gas storage chamber 21 is in communication with the extension tube 22, and the gas in the gas outlet pipe 13 can be discharged into the feeding cylinder 6 through the rotary joint 144, the gas storage chamber 21 and the extension tube 22;

[0055] Specifically, Figure 4-5 and Figure 8 As shown, an extended slide groove 25 is provided on the lower side of the inner wall of the slide groove 24, and the extended slide groove 25 is set to be inclined. A protrusion is provided on the upper side of the extrusion contact plate 18, and a bearing 16 is provided outside the rotating shaft 15, and the bearing 16 passes through the center position of the circle on the feeding barrel 6.

[0056] The extended slide groove 25 is used to allow the raw materials in the slide groove 24 to slide down smoothly, and the slide plate 192 will not press and clamp the raw materials between the slide plate 192 and the slide groove 24, which facilitates the smooth movement of the raw materials;

[0057] Specifically, Figure 10-12 As shown, the gas circulation mechanism 9 includes a connecting frame 91 connected to the heating treatment tube 4, the connecting frame 91 is set to be arc-shaped, and the arc surface of the connecting frame 91 fits on the heating treatment tube 4, the support seat 12 is connected to the connecting frame 91, and a plurality of first partitions 93 and a plurality of second partitions 94 are provided in the connecting frame 91. The front end of the first partition 93 is connected to the inner wall of the connecting frame 91, and the rear end of the second partition 94 is connected to the inner wall of the connecting frame 91. The first partition 93 and the second partition 94 cooperate to divide the inner wall space of the connecting frame 91 into a serpentine channel. The intermediate tube 10 is connected to the connecting frame 91, and a filter screen 92 is provided on the left side of the connecting frame 91.

[0058] The connection frame 91 is made of heat-conducting material, which is used to collect the heat dissipated in the heating treatment cylinder 4 and use the heat to heat the gas flowing in the connection frame 91. The first baffle 93 and the second baffle 94 cooperate with the connection frame 91 to form a serpentine channel, which sets the flow path of the gas in the connection frame 91 to be longer, so that the gas can be heated more fully. The fan assembly 11 passes the heated gas into the gas storage chamber 21 and the extension tube 22 through the rotary joint 144, and the gas enters the feeding cylinder 6 through the extension tube 22 and the gas outlet 23;

[0059] Specifically, Figure 3 and Figure 8 As shown, the rotation control mechanism 14 includes a driving component 141 connected to the feeding barrel 6, the output shaft of the driving component 141 is connected to the first gear 142, the first gear 142 is externally meshed with a second gear 143, the second gear 143 is arranged at the top end of the rotating shaft 15, and a rotating joint 144 is penetrated by the second gear 143.

[0060] Specifically, Figure 2 and Figure 6-7 As shown, the rotary joint 144 is connected to the air storage chamber 21 , the rotary joint 144 is connected to the air outlet pipe 13 , and the rotary joint 144 is connected to the inside of the feeding barrel 6 through the air storage chamber 21 , the extension pipe 22 and the air outlet hole 23 .

[0061] The rotating joint 144 ensures that the rotating gas storage chamber 21 is connected to the gas outlet pipe 13, so that the gas can flow smoothly and stably. When the driving component 141 is working, the first gear 142 controls the second gear 143 and the rotating shaft 15 to rotate. At this time, the rotating shaft 15 controls the spiral blade 20 and the extension tube 22 to rotate.

[0062] Specifically, Figure 8-9 As shown, the blocking and cleaning mechanism 19 includes a contact rod 191 slidably connected to the extrusion contact disk 18, and the lower end of the contact rod 191 is connected to a sliding plate 192, and the sliding plate 192 is slidably arranged in the sliding groove 24. The sliding plate 192 blocks one end of the second air hole 29 located in the sliding groove 24, and a first air hole 193 corresponding to the second air hole 29 is opened on the side of the sliding plate 192. Two movable connection components 194 are connected to the sliding plate 192, and the movable connection components 194 are connected to the sliding cavity 26.

[0063] The movable connection component 194 includes a vertical rod 1941 connected to the sliding plate 192, the vertical rod 1941 is slidably connected to a guide sleeve 1942 outside, the guide sleeve 1942 is connected to the sliding cavity 26, the top of the vertical rod 1941 is connected to a circular plate 1943, the circular plate 1943 is connected to an elastic component 1944, and the other end of the elastic component 1944 is connected to the sliding cavity 26.

[0064] The elastic component 1944 exerts a downward force on the circular plate 1943 to ensure that the sliding plate 192 is not easily shaken and the sliding plate 192 moves downward and resets; the guide sleeve 1942 guides and limits the vertical rod 1941 and the sliding plate 192, so that the sliding plate 192 and the contact rod 191 can perform stable linear movements when squeezed, and the rotating convex portion of the squeezing contact disk 18 squeezes the contact rod 191 and the sliding plate 192 to move upward. At this time, the vertical rod 1941 slides upward in the guide sleeve 1942, and the elastic component 1944 is squeezed and shortened. When the first air hole 19 3 corresponds to the second air hole 29, the inside and outside of the feeding barrel 6 are connected through the first air hole 193 and the second air hole 29, and the moisture generated in the feeding barrel 6 due to heating will be discharged through the first air hole 193 and the second air hole 29 along with the gas. After the convex part of the squeezing contact plate 18 is away from the contact rod 191, the elastic component 1944 controls the circular plate 1943 and the vertical rod 1941 to reset downward, and the sliding plate 192 moves downward to block the second air hole 29. At this time, the inside of the feeding barrel 6 is in a closed state, ensuring that the heat in the feeding barrel 6 can fully preheat and heat and dry the raw materials;

[0065] A method for using a plastic injection molding device, the method comprising the following steps:

[0066] Put the raw materials and additives into the feeding barrel 6 through the hopper 28, and control the fan assembly 11 to work. At this time, the heat dissipated during the heating and extrusion of the raw materials in the heating treatment barrel 4 heats the gas in the connecting frame 91, and the gas is sucked by the fan assembly 11 through the filter screen 92 and enters the connecting frame 91. Due to the cooperation of the first partition plate 93 and the second partition plate 94, the gas enters the fan assembly 11 through the serpentine channel in the connecting frame 91. The fan assembly 11 passes the heated gas into the gas storage chamber 21 and the extension tube 22 through the rotary joint 144, and the gas enters the feeding barrel 6 through the extension tube 22 and the air outlet 23. The hot gas enters the feeding barrel 6 to heat the raw materials, thereby achieving dehumidification, drying and preheating of the raw materials.

[0067] When the driving assembly 141 is working, the first gear 142 controls the second gear 143 and the rotating shaft 15 to rotate. At this time, the rotating shaft 15 controls the spiral blade 20 and the extension tube 22 to rotate. When the spiral blade 20 rotates, the raw material on the lower side of the feeding barrel 6 is lifted upward. At the same time, the extension tube 22 is rotated to evenly and comprehensively pass the hot air between the raw materials in the feeding barrel 6. The constantly turning raw materials can smoothly contact with the hot air. The rotating extrusion contact plate 18 squeezes the contact rod 191 and the sliding plate 192 to move upward. At this time, the vertical The rod 1941 slides upward in the guide sleeve 1942, and the elastic component 1944 is squeezed and shortened. When the position of the first air hole 193 corresponds to the second air hole 29, the inside and outside of the feeding barrel 6 are connected through the first air hole 193 and the second air hole 29. The moisture inside the feeding barrel 6 due to heating will be discharged through the first air hole 193 and the second air hole 29 along with the gas. After the protruding part of the contact plate 18 is squeezed away from the contact rod 191, the elastic component 1944 controls the circular plate 1943 and the vertical rod 1941 to reset downward;

[0068] The sliding plate 192 moves downward to block the second air hole 29. At this time, the feeding barrel 6 is in a closed state, ensuring that the heat in the feeding barrel 6 can fully preheat and heat and dry the raw materials. The dried raw materials enter the hydraulic injection mechanism 5, and the hydraulic injection mechanism 5 sends the raw materials into the heating treatment barrel 4. The heating treatment barrel 4 heats and melts the raw materials and mixes and extrude them into the molding mold 2. After the raw materials in the molding mold 2 are cooled and formed, the hydraulic drive mechanism 3 controls the molding mold 2 to separate. At this time, the molded product flows downward through the discharge channel 7 into the collecting box 8, and the hot air flowing out of the feeding barrel 6 is blown upward along the discharge channel 7 through the exhaust pipe 31 and the air outlet head 32. The gas acts on the product, and the sliding product is lifted by the airflow, slowing down its falling speed into the collecting box 8.

[0069] 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 plastic injection molding device, comprising a frame (1), It is characterized in that The frame (1) is provided with a molding die (2), the frame (1) is provided with a hydraulic drive mechanism (3), the output end of the hydraulic drive mechanism (3) is connected to the molding die (2), the frame (1) is connected with a heating treatment cylinder (4), the discharge end of the heating treatment cylinder (4) is connected to the molding die (2), the right end of the heating treatment cylinder (4) is connected with a hydraulic injection mechanism (5), the hydraulic injection mechanism (5) is connected to the frame (1), the hydraulic injection mechanism (5) is connected to a feeding cylinder (6), the heating treatment cylinder (4) is provided with a gas circulation mechanism (9), the gas circulation mechanism (9) is connected with a support seat (12), the support seat (12) is connected with a fan assembly (11), the side of the fan assembly (11) is connected with an intermediate pipe (10), the intermediate pipe (10) is connected with the gas circulation mechanism (9), the back of the fan assembly (11) is connected with an air outlet pipe (13), the other end of the air outlet pipe (13) is provided with a rotation control mechanism (14); The rotation control mechanism (14) is arranged on the feeding barrel (6), a rotating shaft (15) is connected to the bottom of the rotation control mechanism (14), a spiral blade (20) is provided on the side of the rotating shaft (15) located inside the feeding barrel (6), an extension tube (22) is connected to the side of the rotating shaft (15), a rotating disk (17) is arranged outside the rotating shaft (15), a pressing contact disk (18) is connected to the rotating disk (17), a blocking and cleaning mechanism (19) is slidably connected to the pressing contact disk (18), a sliding groove (24) is provided on the side of the inner wall of the feeding barrel (6), the blocking and cleaning mechanism (19) is slidably arranged in the sliding groove (24), and the sliding groove (24) is provided inside the sliding groove (24). Two sliding cavities (26) are provided on the wall, the blocking and cleaning mechanism (19) is arranged in the sliding cavity (26), a second air hole (29) connected to the sliding groove (24) is provided on the side of the feeding barrel (6), a feeding pipe (27) is provided on both sides of the feeding barrel (6), a hopper (28) is provided at the top of the feeding pipe (27), a gas collecting frame (30) covering the outside of the second air hole (29) is provided on the side of the feeding barrel (6), an exhaust pipe (31) is connected to the side of the gas collecting frame (30), an exhaust head (32) is provided at the end of the exhaust pipe (31), a discharge channel (7) is provided in the frame (1), and the discharge head (32) is provided in the discharge channel (7).

2. A plastic injection molding device according to claim 1, It is characterized in that The inner wall of the discharge channel (7) is arranged in an inclined shape, the gas outlet head (32) is arranged along the inclined wall of the discharge channel (7), the front of the frame (1) is located below the discharge channel (7) and is connected to a collection box (8), and the exhaust pipe (31) is arranged on the front of the frame (1).

3. A plastic injection molding device according to claim 2, It is characterized in that An air storage chamber (21) is provided inside the rotating shaft (15), the extension tube (22) is in communication with the air storage chamber (21), an air outlet hole (23) is provided outside the extension tube (22), and the extension tube (22) is located between the spiral blades (20).

4. A plastic injection molding device according to claim 3, It is characterized in that An extension slide groove (25) is provided on the lower side of the inner wall of the slide groove (24), and the extension slide groove (25) is arranged in an inclined shape. A protrusion is provided on the upper side of the extrusion contact plate (18). A bearing (16) is provided outside the rotating shaft (15), and the bearing (16) passes through the center position of a circle arranged on the feeding barrel (6).

5. A plastic injection molding device according to claim 4, It is characterized in that The gas circulation mechanism (9) comprises a connection frame (91) connected to the heating treatment tube (4), the connection frame (91) is arranged to be arc-shaped, and the arc surface of the connection frame (91) is fitted on the heating treatment tube (4), the support seat (12) is connected to the connection frame (91), a plurality of first partitions (93) and a plurality of second partitions (94) are arranged in the connection frame (91), the front end of the first partition (93) is connected to the inner wall of the connection frame (91), and the rear end of the second partition (94) is connected to the inner wall of the connection frame (91), the first partition (93) and the second partition (94) cooperate to divide the inner wall space of the connection frame (91) into a serpentine channel, the intermediate tube (10) is connected to the connection frame (91), and a filter screen (92) is provided through the left side of the connection frame (91).

6. A plastic injection molding device according to claim 5, It is characterized in that The rotation control mechanism (14) comprises a driving assembly (141) connected to the feeding barrel (6); the output shaft of the driving assembly (141) is connected to a first gear (142); the first gear (142) is externally meshed with a second gear (143); the second gear (143) is arranged at the top end of the rotating shaft (15); and a rotating joint (144) is penetrated through the second gear (143).

7. A plastic injection molding device according to claim 6, It is characterized in that The rotary joint (144) is in communication with the air storage chamber (21), the rotary joint (144) is in communication with the air outlet pipe (13), and the rotary joint (144) is in communication with the interior of the feeding cylinder (6) via the air storage chamber (21), the extension pipe (22) and the air outlet hole (23).

8. A plastic injection molding device according to claim 7, It is characterized in that The blocking and cleaning mechanism (19) comprises a contact rod (191) slidably connected to the extrusion contact disk (18); the lower end of the contact rod (191) is connected to a sliding plate (192); the sliding plate (192) is slidably arranged in the sliding groove (24); the sliding plate (192) blocks one end of the second air hole (29) located in the sliding groove (24); a first air hole (193) corresponding to the second air hole (29) is opened on the side of the sliding plate (192); two movable connection components (194) are connected to the sliding plate (192); the movable connection components (194) are connected to the sliding cavity (26).

9. A plastic injection molding device according to claim 8, It is characterized in that The movable connection component (194) comprises a vertical rod (1941) connected to a sliding plate (192); a guide sleeve (1942) is slidably connected to the outside of the vertical rod (1941); the guide sleeve (1942) is connected to the sliding cavity (26); the top end of the vertical rod (1941) is connected to a circular plate (1943); the circular plate (1943) is connected to an elastic component (1944); the other end of the elastic component (1944) is connected to the sliding cavity (26).

10. A method for using a plastic injection molding device, It is characterized in that According to the plastic injection molding device of claim 9, the method of using the device comprises the following steps: The raw materials and additives are placed into the feeding barrel (6) through the hopper (28), and the fan assembly (11) is controlled to work. At this time, the heat dissipated during the heating and extrusion of the raw materials in the heating treatment barrel (4) heats the gas in the connecting frame (91). The gas is sucked by the fan assembly (11) through the filter screen (92) and enters the connecting frame (91). Due to the cooperation of the first partition plate (93) and the second partition plate (94), the gas enters the fan assembly (11) through the serpentine channel in the connecting frame (91). The fan assembly (11) passes the heated gas into the gas storage chamber (21) and the extension tube (22) through the rotary joint (144). The gas enters the feeding barrel (6) through the extension tube (22) and the air outlet (23). The hot gas enters the feeding barrel (6) to heat the raw materials, thereby achieving dehumidification, drying and preheating of the raw materials. When the driving assembly (141) is working, the first gear (142) controls the second gear (143) and the rotating shaft (15) to rotate. At this time, the rotating shaft (15) controls the spiral blade (20) and the extension tube (22) to rotate. When the spiral blade (20) rotates, the raw materials on the lower side of the feeding barrel (6) are lifted upward. At the same time, the extension tube (22) rotates to evenly and comprehensively pass hot air between the raw materials in the feeding barrel (6). The continuously turned raw materials can smoothly contact with the hot air. The rotating extrusion contact plate (18) squeezes the contact rod (191) and the sliding plate (192) to move upward. At this time, the vertical rod ( The first air hole (193) and the second air hole (29) are connected to each other through the first air hole (193) and the second air hole (29). The moisture inside the feeding barrel (6) due to heating will be discharged along with the gas through the first air hole (193) and the second air hole (29). After the protruding part of the contact plate (18) is squeezed away from the contact rod (191), the elastic component (1944) controls the circular plate (1943) and the vertical rod (1941) to reset downward. The sliding plate (192) moves downward to block and seal the second air hole (29). At this time, the feeding barrel (6) is in a closed state, ensuring that the heat in the feeding barrel (6) can fully preheat and heat and dry the raw materials. The dried raw materials enter the hydraulic injection mechanism (5). The hydraulic injection mechanism (5) sends the raw materials into the heating treatment barrel (4). The heating treatment barrel (4) heats and melts the raw materials and mixes and extrude them into the molding mold (2). After the raw materials in the molding mold (2) are cooled and formed, the hydraulic drive mechanism (3) controls the molding mold (2) to separate. At this time, the molded product flows downward through the discharge channel (7) into the collection box (8). The hot air flowing out of the feeding barrel (6) is blown upward along the discharge channel (7) through the exhaust pipe (31) and the air outlet head (32). The gas acts on the product, and the sliding product is lifted by the air flow, slowing down its falling speed into the collection box (8).

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