Injection molding equipment and injection molding method

Abstract

The invention discloses injection molding equipment and an injection molding method. The injection molding equipment comprises a machine body, a sliding mechanism and an injection molding mechanism are installed on the machine body, the sliding mechanism is slidably connected to the machine body, a first mold body is installed on the sliding mechanism, a second mold body matched with the first mold body is installed on the injection molding mechanism, and a forming cavity is formed in the second mold body; a cooling cavity matched with the forming cavity is formed in the second mold body, an air cylinder is installed on the groove wall, away from the forming cavity, of the cooling cavity, and a sliding plate is fixedly connected to the air cylinder. According to the injection molding equipment and the injection molding method, the flow characteristic of molten plastic can be effectively guaranteed, it is ensured that the molten plastic is fully mixed and completely fused in the mold, so that the quality problems of flaws such as traces, bubbles or cavities after a product is formed are avoided, in addition, plastic particles can be effectively dried, the water content of the plastic particles is reduced, and the product quality is improved. The plastic particles are uniformly mixed in the melting process, so that the quality and the service life of a plastic product are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding equipment, and in particular relates to an injection molding equipment and an injection molding method. Background Art

[0002] Injection molding equipment plays a vital role in the plastic products industry. From automobile manufacturing, electronic appliances to daily necessities and other fields, injection molding technology can produce a variety of complex shapes and precise sizes of plastic products to meet the specific needs of different industries. By heating plastic particles, melting them and injecting them into the mold, after cooling and solidification, the required plastic products can be obtained. For example, in automobile manufacturing, injection molding machines are used to produce important parts such as seat adjustment switches, instrument panels, and headlight housings; in the field of electronic appliances, they can manufacture products such as mobile phone cases and TV housings. However, during the injection molding process, in order to improve production efficiency, water cooling pipes are usually added to the mold to quickly cool the plastic through water cooling to achieve rapid demolding. However, while this improvement measure has improved efficiency, it has also caused some new problems.

[0003] First, the continuous contact between the water cooling pipe and the molding cavity causes the temperature field inside the mold to be unevenly distributed. The low temperature of the mold directly affects the flow characteristics of the molten plastic, causing the molten plastic to fail to completely fuse when it converges in the mold, which may cause quality problems such as linear marks, bubbles or voids on the product surface.

[0004] Secondly, plastic particles may come into contact with moisture during storage. Plastic particles with too high a water content are difficult to mix evenly during the melting process, and bubbles are easily generated. This phenomenon causes defects such as bubbles and silver threads to appear on the surface of the product. In addition, excessive water content in plastic particles will also cause an increase in residual water vapor inside the mold, which may cause cracks or cracks in the plastic product during the subsequent cooling process, further affecting the physical and mechanical properties of the product. These defects not only affect the appearance of the plastic product, but may also affect its performance characteristics during use, thereby affecting the quality and service life of the final product.

[0005] Therefore, in view of the above technical problems, it is necessary to provide an injection molding device and an injection molding method.

[0006] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0007] The purpose of the present invention is to provide an injection molding device and an injection molding method, which can effectively ensure the flow characteristics of molten plastic, ensure that the molten plastic is fully mixed and completely fused in the mold, thereby avoiding defects such as marks, bubbles or voids after the product is formed. In addition, the plastic particles can be effectively dried to reduce their water content, so that the plastic particles are evenly mixed during the melting process, thereby improving the quality and service life of the plastic product.

[0008] In order to achieve the above-mentioned object, a specific embodiment of the present invention provides an injection molding device, including a machine body, a sliding mechanism and an injection molding mechanism are installed on the machine body, the sliding mechanism is slidably connected to the machine body, a first mold body is installed on the sliding mechanism, a second mold body matching the first mold body is installed on the injection molding mechanism, a molding cavity is provided on the second mold body, a cooling cavity matching the molding cavity is provided in the second mold body, a cylinder is installed on the groove wall of the cooling cavity away from the molding cavity, a sliding plate is fixedly connected to the cylinder, the sliding plate and the cooling cavity are sealed and connected, and the sliding plate can slide in the groove wall of the cooling cavity, and the injection molding device also includes:

[0009] a pair of water cooling pipes, the water cooling pipes passing through the second mold body and the sliding plate, the sliding plate being slidably connected to the water cooling pipes, and a water pump being installed on the water cooling pipes;

[0010] A water storage tank, one end of the water cooling pipe away from the second mold body is fixedly connected to the water storage tank;

[0011] A drying component is connected to a water storage tank, and the heat in the water storage tank is passed into the drying component, so that the drying component can dry the plastic particles.

[0012] In one or more embodiments of the present invention, the drying component includes a drying barrel, a second air duct is installed on the drying barrel, the second air duct passes through the lower panel of the drying barrel, the second air duct and the lower panel of the drying barrel are slidably connected, a first air duct matching the second air duct is fixedly connected to the water tank, the first air duct and the second air duct are communicated, a first air distributor plate is integrally formed on the second air duct, and a second air distributor plate is integrally formed on the first air distributor plate.

[0013] In one or more embodiments of the present invention, a first gas collecting groove is provided in the first gas distribution plate, the first gas collecting groove is connected to the inner tube of the second gas guide tube, and a second gas collecting groove connected to the first gas collecting groove is provided on the second gas distribution plate.

[0014] In one or more embodiments of the present invention, a vent hole is provided on the second air distribution plate, the vent hole passes through the two side walls of the second air distribution plate, the vent hole is connected to the second air collecting groove, and a steam-water separator is installed on the first air duct.

[0015] In one or more embodiments of the present invention, the opposite side walls of the first air distributor are in contact with the inner wall of the drying barrel, the side walls of the first air distributor and the inner wall of the drying barrel can slide relative to each other, and the height of the first air distributor is smaller than the height of the drying barrel.

[0016] In one or more embodiments of the present invention, a fixing plate is fixedly connected to the lower panel of the drying barrel, a roller is fixedly connected to the end surface of the fixing plate away from the drying barrel, a rotary motor and a bearing seat matching the roller are installed on the machine body, a connecting rod is rotatably connected to the rotary motor, one end of the connecting rod away from the rotary motor is rotatably connected to the bearing seat, and a cam matching the roller is fixedly connected to the connecting rod.

[0017] In one or more embodiments of the present invention, a spring is fixedly connected to the lower plate of the fixing plate, and one end of the spring away from the fixing plate is fixedly connected to the machine body.

[0018] In one or more embodiments of the present invention, a material leakage port is provided on the drying barrel, a conveying device is fixedly connected to the material leakage port, a material storage box is fixedly connected to one end of the conveying device away from the material leakage port, and the material storage box is communicated with the injection molding mechanism.

[0019] In one or more embodiments of the present invention, a material injection pipe is fixedly connected to the upper panel of the drying barrel, and the material injection pipe passes through the upper panel of the drying barrel.

[0020] An injection molding method comprises the following steps:

[0021] S1, pretreatment, transporting the plastic particles to a drying barrel, blowing dry gas into the second air duct in the drying barrel, flowing the dry gas from the second air duct to the second air collecting tank, and then spraying out from the vent hole to preliminarily dry the plastic particles in the drying barrel;

[0022] S2, shaking the material. When the rotary motor rotates, the drying barrel will vibrate at a high frequency, so that the plastic particles will move in the drying barrel, gradually transferring from one side of the side wall of the first air distributor to the other end of the side wall of the first air distributor. When the plastic particles shake, gaps will continue to appear between the plastic particles, and the dry gas ejected from the vents can make the plastic particles dry more evenly.

[0023] S3, injection: as the material is shaken, the plastic particles fall into the material storage box from the material leakage port, and then flow into the injection molding mechanism, which melts the plastic particles and injects the melted plastic particles into the second mold body;

[0024] S4, cooling and demoulding, the water pump is started to transport the water in the water storage tank to the cooling chamber, cool the product in the molding chamber, and take the product out of the molding chamber through the demoulding device.

[0025] Compared with the prior art, the injection molding equipment and method of the present invention can effectively guarantee the flow characteristics of the molten plastic, ensure that the molten plastic is fully mixed and completely fused in the mold, thereby avoiding defects such as marks, bubbles or voids and other quality problems after product molding. In addition, the plastic particles can also be effectively dried to reduce their water content, so that the plastic particles are evenly mixed during the melting process, thereby improving the quality and service life of the plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments recorded in the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic structural diagram of an injection molding device in one embodiment of the present invention;

[0028] Figure 2 A partial cross-sectional view of an injection molding mechanism of an injection molding device in one embodiment of the present invention;

[0029] Figure 3 A cross-sectional view of a second mold body of an injection molding device according to an embodiment of the present invention;

[0030] Figure 4 A partial cross-sectional schematic diagram of an injection molding device in one embodiment of the present invention;

[0031] Figure 5 This is a schematic structural diagram of a drying barrel of an injection molding device in one embodiment of the present invention;

[0032] Figure 6 A cross-sectional view of a drying barrel of an injection molding device according to an embodiment of the present invention Figure 1 ;

[0033] Figure 7 A cross-sectional view of a cam of an injection molding device in one embodiment of the present invention;

[0034] Figure 8 A cross-sectional view of a drying barrel of an injection molding device according to an embodiment of the present invention Figure 2 .

[0035] Description of main reference numerals:

[0036] 1. Machine body; 11. Bearing seat; 2. Sliding mechanism; 21. First mold body; 3. Injection mechanism; 31. Second mold body; 311. Molding cavity; 312. Sliding plate; 313. Cooling cavity; 314. Cylinder; 32. Water cooling pipe; 33. Water pump; 34. Hopper; 35. Feeder; 36. Storage box; 4. Water storage tank; 41. First air duct; 42. Steam-water separator; 5. Drying barrel; 51. Fixed plate; 511. Spring; 512. Roller; 52. Second air duct; 53. First air distributor plate; 531. First air collecting trough; 54. Second air distributor plate; 541. Second air collecting trough; 542. Air vent; 55. Injection pipe; 56. Leakage port; 6. Rotary motor; 61. Connecting rod; 62. Cam; 7. Conveying device. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0038] like Figures 1 to 3 As shown, an injection molding device in one embodiment of the present invention includes a machine body 1, on which a sliding mechanism 2 and an injection molding mechanism 3 are installed. The sliding mechanism 2 is slidably connected to the machine body 1, on which a first mold body 21 is installed, and on which a second mold body 31 matching the first mold body 21 is installed, and on which a molding cavity 311 is provided. A hopper 34 is also installed on the injection molding mechanism 3, and the hopper 34 is filled with plastic particles.

[0039] Specifically, the sliding mechanism 2 slides toward the injection molding mechanism 3, so that the first mold body 21 covers the second mold body 31. Then the hopper 34 injects plastic particles into the injection molding mechanism 3, and the injection molding mechanism 3 melts the plastic particles and injects them into the second mold body 31 in the covered state to produce a plastic product. After the plastic product is cooled and formed, the product is taken out by the demoulding device to complete the production.

[0040] In order to speed up the cooling of plastic products, water cooling pipes are often added to the second mold body 31 to quickly cool the plastic through water cooling to achieve rapid demolding. However, the continuous contact between the water cooling pipe and the molding cavity causes uneven distribution of the temperature field inside the mold. The low temperature mold directly affects the flow characteristics of the molten plastic, causing the molten plastic to fail to completely fuse when it converges in the mold, which may cause quality problems such as linear marks, bubbles or voids on the product surface.

[0041] In order to solve the above problems, Figures 2 to 4 As shown, a cooling cavity 313 matching the molding cavity 311 is provided in the second mold body 31, and the outer wall of the molding cavity 311 is in the cooling cavity 313 and in the middle of the cooling cavity 313, and does not contact the groove wall of the cooling cavity 313. A cylinder 314 is installed on the groove wall of the cooling cavity 313 away from the molding cavity 311, and a sliding plate 312 is integrally formed on the cylinder 314. The side walls of the sliding plate 312 and the four groove walls of the cooling cavity 313 are sealed and connected, and the sliding plate 312 can slide on the groove wall of the cooling cavity 313. A pair of water cooling pipes 32 are also installed on the injection molding mechanism 3, and the water cooling pipes 32 pass through the second mold body 31 and the sliding plate 312, and the sliding plate 312 is slidably connected to the water cooling pipes 32. A water pump 33 is installed on the water cooling pipe 32, and a water storage tank 4 is welded to the end of the water cooling pipe 32 away from the second mold body 31, and the water storage tank 4 is filled with cooling water.

[0042] Specifically, when injecting molten plastic, the cylinder 314 is in a started state. At this time, there is a certain distance between the sliding plate 312 and the molding cavity 311. The cooling water in the cooling cavity 313 is at the lower part of the bottom wall of the molding cavity 311. The cooling water and the molding cavity 311 are not in contact. The molding cavity 311 is in a cooling state. The temperature of the injection molding mechanism 3 is not lowered by the cooling water when injecting the molten plastic, thereby ensuring the flow characteristics of the molten plastic and allowing the molten plastic to be completely fused in the molding cavity 311.

[0043] After the injection is completed, the water pump 33 is started to inject cooling water into the cooling chamber 313 to cool the molding chamber 311. When the water pump 33 is started, the cylinder 314 is also started to push the sliding plate 312 in the direction of the molding chamber 311, so that the volume of the cooling chamber 313 becomes smaller, so that the cooling water in the cooling chamber 313 can quickly flood the molding chamber 311. When the molding chamber 311 is flooded with cooling water, because the water cooling pipes 32 are a pair, the water pump 33 on the other water cooling pipe 32 rotates in the same direction, and the two water pumps 33 cooperate with each other to circulate the cooling water in the cooling chamber 313, further accelerating the rapid cooling of the molding chamber 311.

[0044] After cooling is completed, the water pump 33 in the water injection state stops, and the water pump 33 in the water pumping state pumps the water in the cooling chamber 313 into the water storage tank 4. When pumping water, the cylinder 314 will also start, so that the sliding plate 312 is away from the molding chamber 311. When the sliding plate 312 is away from the molding chamber 311, the space of the cooling chamber 313 will become larger, the water level will drop rapidly, and the molding chamber 311 can be separated from the water. At this time, although the molten plastic has formed a solid plastic product, it still has a certain amount of heat, which can keep the molding chamber 311 at a certain temperature, which is helpful for the flow characteristics when the molten plastic is injected next time, and is beneficial to the quality of the final product.

[0045] Specifically, the second mold body 31 is a ceramic fiber mold body, which has excellent heat insulation performance and low thermal conductivity, and can ensure that the molding cavity 311 maintains a certain temperature after demolding.

[0046] It is worth noting that plastic particles may be exposed to moisture during storage. Plastic particles with too high a water content are difficult to mix evenly during the melting process, which may cause defects such as bubbles and silver threads on the product surface. In addition, excessive water content in plastic particles will also cause an increase in residual water vapor inside the mold, which may cause cracks or cracks in the plastic product during the subsequent cooling process, further affecting the physical and mechanical properties of the product. Drying component, the drying component is connected to the water storage tank 4, and the heat of the water in the water storage tank 4 is passed into the drying component to evaporate the moisture on the plastic particles.

[0047] In order to solve the above problems, Figures 4 to 8 As shown, a drying assembly is installed on the machine body 1. The drying assembly includes a drying barrel 5, and a material injection pipe 55 is welded on the upper panel of the drying barrel 5, and the material injection pipe 55 penetrates the upper panel of the drying barrel 5. A second air guide pipe 52 is slidably connected in the drying barrel 5, and the second air guide pipe 52 penetrates the lower panel of the drying barrel 5 and is sealed to the lower panel of the drying barrel 5. Specifically, the second air guide pipe 52 can slide on the lower panel of the drying barrel 5 and can also be sealed.

[0048] A first air duct 41 matching the second air duct 52 is welded to the water storage tank 4, the first air duct 41 and the second air duct 52 are connected, a first air distribution plate 53 is integrally formed on the second air duct 52, a first air collecting groove 531 is provided in the first air distribution plate 53, the first air collecting groove 531 is connected to the inner tube of the second air duct 52, and a second air collecting groove 541 connected to the first air collecting groove 531 is provided on the second air distribution plate 54.

[0049] Specifically, the melting point of common polyester resin is about 260 degrees Celsius. In order to ensure the flow characteristics during injection molding, it will be heated to more than 300 degrees Celsius, and a large amount of heat needs to be removed for cooling. The cooling water in the water storage tank 4 will become very hot with continuous circulation, and will be in a boiling state after continuous production, generating steam. These steams flow from the first air duct 41 to the second air duct 52, so that the temperature of the second air duct 52, the first air distributor 53 and the second air distributor 54 is relatively high, so that the plastic particles in the drying barrel 5 can be heated to remove moisture from the plastic particles.

[0050] Furthermore, the second air distribution plate 54 is provided with air holes 542, which penetrate through the two side walls of the second air distribution plate 54, and are connected to the second air collecting groove 541. A steam-water separator 42 is installed on the first air guide pipe 41. Specifically, the steam flowing from the first air guide pipe 41 to the second air guide pipe 52 is separated by the steam-water separator 42 into water and hot air and water, which return to the water storage tank 4, and the hot air is ejected from the air holes 542, which can enhance the drying effect of the plastic particles in the drying barrel 5.

[0051] It is worth noting that although the above solution can dry the plastic particles in the drying barrel 5, the heat generated in the water storage tank 4 is limited, and the drying effect is also limited.

[0052] In order to enhance the drying effect of the plastic particles in the drying barrel 5, the opposite side walls of the first air distributor 53 are fitted with the inner wall of the drying barrel 5, and the side walls of the first air distributor 53 are slidably connected in the drying barrel 5, and the height of the first air distributor 53 is less than the height of the inner barrel of the drying barrel 5. A fixing plate 51 is welded to the lower plate of the drying barrel 5, and a roller 512 is welded to the end surface of the fixing plate 51 away from the drying barrel 5. A rotary motor 6 and a bearing seat 11 matching the roller 512 are installed on the machine body 1, and a connecting rod 61 is rotatably connected to the rotary motor 6. The end of the connecting rod 61 away from the rotary motor 6 is rotatably connected to the bearing seat 11, and a cam 62 matching the roller 512 is welded to the connecting rod 61.

[0053] Specifically, the first air distributor plate 53 divides the drying barrel 5 into two half areas, the right side of which is the feeding area, and the left side is the discharging area, and the injection pipe 55 is located above the feeding area. The upper end surface of the first air distributor plate 53 is at a certain distance from the upper panel of the drying barrel 5, and the lower end surface of the first air distributor plate 53 is also at a certain distance from the lower panel of the drying barrel 5. Plastic particles are added to the feeding area of ​​the drying barrel 5 from the injection pipe 55. Under the action of gravity, a part of the plastic particles will enter the discharging area from the gap between the first air distributor plate 53 and the lower panel of the drying barrel 5. When hot air is ejected from the vent 542, the rotary motor 6 will also start, and the connecting rod 61 and the cam 62 will rotate. At this time, the roller 512 runs on the cam 62, which will cause the drying barrel 5 to vibrate continuously up and down. When the drying barrel 5 vibrates, because the second air guide duct 52 slides on the lower panel of the drying barrel 5 and is sealed, the height positions of the second air guide duct 52, the first air distributor plate 53 and the second air distributor plate 54 remain unchanged. As the drying barrel 5 vibrates, gaps will continue to appear between the plastic particles in the drying barrel 5, so that the hot air ejected from the air vents 542 can better contact these plastic particles, thereby enhancing the drying effect.

[0054] At the same time, as the drying barrel 5 vibrates, the plastic particles in the drying barrel 5 gradually move from the feeding area in the drying barrel 5 to the discharging area in the drying barrel 5 until the plastic particles in the feeding area and the discharging area are flush. When the plastic particles move, not only the contact time between the plastic particles and the hot air is increased, but also the friction between the plastic particles can generate heat, further improving the drying quality.

[0055] Furthermore, the drying barrel 5 is provided with a material leakage port 56, a conveying device 7 is hingedly connected to the material leakage port 56, a material storage box 36 is hingedly connected to one end of the conveying device 7 away from the material leakage port 56, and the material storage box 36 is connected to the injection molding mechanism 3. Specifically, as the drying barrel 5 continues to vibrate, the plastic particles in the drying barrel 5 are discharged from the material leakage port 56, and enter the material storage box 36 after passing through the conveying device 7. A feeder 35 is installed on the machine body 1, and the feeder 35 can extract the plastic particles in the material storage box 36 and input them into the feeder 35.

[0056] Specifically, the conveying device 7 and the drying barrel 5 are hinged, so that when the drying barrel 5 vibrates, the end of the conveying device 7 connected to the material leakage port 56 moves up and down and will not fall off from the material leakage port 56 due to the vibration.

[0057] Furthermore, a spring 511 is welded on the lower plate of the fixing plate 51, and one end of the spring 511 away from the fixing plate 51 is welded on the machine body 1. Specifically, the spring 511 can elastically pull the fixing plate 51, so that the roller 512 and the cam 62 are always in contact with each other to ensure the vibration effect of the drying barrel 5.

[0058] When in use, the cylinder 314 is started, so that the sliding plate 312 is close to the molding cavity 311, so that the volume of the cooling cavity 313 becomes smaller. At the same time, the two water pumps 33 are also started one after another. After the cooling water is filled into the cooling cavity 313, the cooling water in the cooling cavity 313 is circulated to speed up the cooling speed of the plastic product in the molding cavity 311. After the plastic product is cooled, the cylinder 314 is started, so that the sliding plate 312 is away from the molding cavity 311, the volume of the cooling cavity 313 becomes larger, and the water level in the cooling cavity 313 drops rapidly, ensuring that the molding cavity 311 has residual temperature. At the same time, it is pumped out to the water storage tank 4 by the water pump 33.

[0059] The water temperature in the water storage tank 4 continues to rise until it boils. The steam generated at this time is separated by the steam-water separator 42 to form hot air and is discharged into the drying barrel 5 to dry the plastic particles in the drying barrel 5.

[0060] An injection molding method comprises the following steps:

[0061] S1, pretreatment, transporting the plastic particles to the drying barrel 5, blowing dry gas into the second air duct 52 in the drying barrel 5, the dry gas flows from the second air duct 52 to the second air collecting tank 541, and then sprays out from the vent 542, so as to preliminarily dry the plastic particles in the drying barrel 5;

[0062] S2, shaking the material. When the rotary motor 6 rotates, the drying barrel 5 will vibrate at a high frequency, so that the plastic particles will move in the drying barrel 5, gradually transferring from one side of the side wall of the first air distributor 53 to the other end of the side wall of the first air distributor 53. When the plastic particles are shaken, gaps will continue to appear between the plastic particles, and the dry gas ejected from the vent 542 can make the plastic particles dry more evenly;

[0063] S3, injection. As the material is shaken, the plastic particles fall into the material storage box 36 from the material leakage port 56, and then flow into the injection molding mechanism 3. The injection molding mechanism 3 melts the plastic particles and injects the melted plastic particles into the second mold body 31.

[0064] S4, cooling and demoulding, the water pump 33 is started to transport the water in the water storage tank 4 to the cooling chamber 313, to cool the product in the molding chamber 311, and to take the product in the molding chamber 311 out through the demoulding device.

[0065] Compared with the prior art, the injection molding equipment and the injection molding method of the present invention can effectively guarantee the flow characteristics of the molten plastic, ensure that the molten plastic is fully mixed and completely fused in the mold, thereby avoiding defects such as marks, bubbles or voids after the product is formed. In addition, the plastic particles can be effectively dried to reduce their water content, so that the plastic particles are evenly mixed during the melting process, thereby improving the quality and service life of the plastic product.

[0066] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0067] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An injection molding device, comprising a machine body, a sliding mechanism and an injection molding mechanism installed on the machine body, the sliding mechanism being slidably connected to the machine body, a first mold body being installed on the sliding mechanism, a second mold body matching the first mold body being installed on the injection molding mechanism, a molding cavity being provided on the second mold body, characterized in that: A cooling cavity matching the molding cavity is provided in the second mold body, a cylinder is installed on the groove wall of the cooling cavity away from the molding cavity, a sliding plate is fixedly connected to the cylinder, the sliding plate and the cooling cavity are sealed and the sliding plate can slide in the groove wall of the cooling cavity, and the injection molding equipment also includes: a pair of water cooling pipes, the water cooling pipes passing through the second mold body and the sliding plate, the sliding plate being slidably connected to the water cooling pipes, and a water pump being installed on the water cooling pipes; A water storage tank, one end of the water cooling pipe away from the second mold body is fixedly connected to the water storage tank; A drying component is connected to a water storage tank, and the heat in the water storage tank is passed into the drying component, so that the drying component can dry the plastic particles.

2. An injection molding device according to claim 1, characterized in that: The drying component includes a drying barrel, on which a second air duct is installed, the second air duct passes through a lower panel of the drying barrel, the second air duct and the lower panel of the drying barrel are slidably connected, a first air duct matching the second air duct is fixedly connected to the water storage tank, the first air duct and the second air duct are communicated, a first air distributor plate is integrally formed on the second air duct, and a second air distributor plate is integrally formed on the first air distributor plate.

3. An injection molding device according to claim 2, characterized in that: A first gas collecting groove is provided in the first gas distribution plate, and the first gas collecting groove is connected to the inner tube of the second gas guide tube. A second gas collecting groove connected to the first gas collecting groove is provided on the second gas distribution plate.

4. An injection molding device according to claim 3, characterized in that: The second air distribution plate is provided with an air vent which passes through two side walls of the second air distribution plate and is connected to the second air collecting groove. A steam-water separator is installed on the first air guide pipe.

5. An injection molding device according to claim 4, characterized in that: The opposite side walls of the first air distributor plate fit with the inner wall of the drying barrel, the side walls of the first air distributor plate and the inner wall of the drying barrel can slide relative to each other, and the height of the first air distributor plate is smaller than the height of the drying barrel.

6. An injection molding device according to claim 5, characterized in that: A fixing plate is fixedly connected to the lower panel of the drying barrel, a roller is fixedly connected to the end surface of the fixing plate away from the drying barrel, a rotary motor and a bearing seat matching the roller are installed on the machine body, a connecting rod is rotatably connected to the rotary motor, one end of the connecting rod away from the rotary motor is rotatably connected to the bearing seat, and a cam matching the roller is fixedly connected to the connecting rod.

7. An injection molding device according to claim 6, characterized in that: A spring is fixedly connected to the lower plate of the fixing plate, and one end of the spring away from the fixing plate is fixedly connected to the machine body.

8. The injection molding device according to claim 6, characterized in that: The drying barrel is provided with a material leakage port, the material leakage port is fixedly connected with a conveying device, one end of the conveying device away from the material leakage port is fixedly connected with a material storage box, and the material storage box is communicated with the injection molding mechanism.

9. The injection molding device according to claim 2, characterized in that: A material injection pipe is fixedly connected to the upper panel of the drying barrel, and the material injection pipe passes through the upper panel of the drying barrel.

10. An injection molding method according to claim 1, characterized in that: The following steps are involved: S1, pretreatment, transporting the plastic particles to a drying barrel, blowing dry gas into the second air duct in the drying barrel, flowing the dry gas from the second air duct to the second air collecting tank, and then spraying out from the vent hole to preliminarily dry the plastic particles in the drying barrel; S2, shaking the material. When the rotary motor rotates, the drying barrel will vibrate at a high frequency, so that the plastic particles will move in the drying barrel, gradually transferring from one side of the side wall of the first air distributor to the other end of the side wall of the first air distributor. When the plastic particles shake, gaps will continue to appear between the plastic particles, and the dry gas ejected from the vents can make the plastic particles dry more evenly. S3, injection: as the material is shaken, the plastic particles fall into the material storage box from the material leakage port, and then flow into the injection molding mechanism, which melts the plastic particles and injects the melted plastic particles into the second mold body; S4, cooling and demoulding, the water pump is started to transport the water in the water storage tank to the cooling chamber, cool the product in the molding chamber, and take the product out of the molding chamber through the demoulding device.

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