Washing machine accessory injection molding machine

Abstract

The invention relates to the technical field of injection molding machines, in particular to a washing machine accessory injection molding machine. Comprising an injection molding machine body, a mold closing device and an injection device are arranged in the injection molding machine body, the mold closing device comprises a male mold and a female mold, a plurality of convex grooves are formed in the right side of the male mold, a plurality of grooves in butt joint with the convex grooves are formed in the left side of the female mold, and a feeding port connected with an injection port is formed in the right side of the female mold; an air inlet channel is formed in the female die, an air inlet connected with the air inlet channel is formed in the top of the female die, and an air conveying assembly is installed at the top of the air inlet. Hot air escaping from the injection device is conveyed into the female die of the die assembly assembly through the air conveying assembly, the temperature of plastic melt flowing in the female die is kept, and the situation that due to the fact that the plastic melt is cooled, filling is incomplete when the plastic melt enters a model groove to be shaped, and defective products appear is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding machines, in particular to an injection molding machine for washing machine accessories. Background Art

[0002] With the widespread use of washing machines, the demand for washing machine accessories is also increasing. In the production process of washing machine accessories, injection molding machines play a vital role.

[0003] When producing washing machine accessories, the clamping components of the injection molding machine are merged, and the molten plastic melt is injected into the clamping component through the injection component. The plastic melt injected into the clamping component is cooled and shaped, and finally the mold ejection component ejects the molded accessories to produce the washing machine accessories. In order to make the production efficiency of washing machine accessories higher, multiple identical washing machine accessory model grooves will be opened on the surfaces of the male and female molds of the clamping component. After the clamping component is clamped, the injection component can inject plastic melt into multiple model grooves to achieve one-time molding and production of multiple washing machine accessories.

[0004] However, when injecting plastic melt into multiple model grooves, it is necessary to open multiple injection channels inside the mother mold and connect them to the injection port of the injection assembly to inject plastic melt into the model grooves of washing machine accessories at multiple different positions on the mother mold. Opening multiple injection channels in the mother mold of the clamping assembly of the injection molding machine will disperse the plastic melt from the injection assembly through the injection port to the multiple injection channels, and disperse the total amount of plastic melt circulation. In addition, there will be bends in the multiple injection channels connected to the model grooves at different positions, which increases the time required for the plastic melt to reach the multiple model grooves of washing machine accessories. When the plastic melt is injected into the model groove, the plastic melt is dispersed and the circulation time required increases, resulting in a decrease in the temperature of the plastic melt. The plastic melt cannot fully fill every corner of the mold in the clamping assembly, so that the surface of the washing machine accessories produced will have bubbles, shrinkage holes, unevenness, and increase in defective products. Summary of the Invention

[0005] The object of the present invention is to provide an injection molding machine for washing machine accessories to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides an injection molding machine for washing machine parts, comprising an injection molding machine body, wherein an injection device, a mold clamping device, and a hydraulic transmission device are disposed inside the injection molding machine body, wherein the hydraulic transmission device is used to control the opening and closing of the mold clamping device, wherein the injection device heats and melts plastic particles into a plastic melt and injects the melt into the mold clamping device, wherein a connecting plate is disposed between the injection device and the mold clamping device, and wherein an injection port is formed on an outer wall of the connecting plate;

[0007] The mold clamping device includes a male mold and a female mold. The right side of the female mold is installed on the outer wall of the connecting plate, and the male mold is arranged on the left side of the female mold. A plurality of convex grooves are provided on the right side of the male mold, and a plurality of grooves docking with the convex grooves are provided on the left side of the female mold. A feed port connected to the injection port is provided on the right side of the female mold. The feed port is located at one end inside the female mold and has a plurality of material delivery channels connected to the plurality of grooves. An air inlet channel is provided inside the female mold, and an air inlet connected to the air inlet channel is provided on the top of the female mold. An air delivery component is installed on the top of the air inlet. The air delivery component is used to deliver hot air into the air inlet, and a closing component is provided inside the air inlet.

[0008] As a further improvement of the present technical solution, the injection device includes a barrel, a screw and a heating element. The screw is rotatably installed inside the barrel, and the heating element is sleeved on the outer surface of the barrel. The heating element is used to heat the inside of the barrel to assist the screw in melting the plastic particles into a plastic melt. The injection end of the barrel is docked and installed in the injection port of the connecting plate.

[0009] As a further improvement of the present technical solution, the gas delivery component includes a barrier sleeve installed on the outer surface of the heating element, the barrier sleeve is used to block the heat emitted by the heating element to the outside, the top of the barrier sleeve is provided with a connection port, the outer surface of the connection port is installed with an air guide pipe, the air guide pipe is used to conduct the hot air emitted from the heating element in the barrier sleeve, and the other end of the air guide pipe is installed on the outer surface of the air inlet to transport hot air into the air inlet.

[0010] As a further improvement of the present technical solution, the closing component includes a flaring groove 1 opened on the inner wall of the air inlet, a closing plate is installed on the top of the inner wall of the flaring groove 1, an extrusion column is fixedly installed on the top of the closing plate, the top of the extrusion column extends to the interior of the air inlet, a return spring is installed on the bottom of the closing plate, the bottom of the return spring is installed on the bottom of the inner wall of the flaring groove 1, and the return spring presses the closing plate upward to fit the top of the inner wall of the flaring groove 1, thereby blocking and closing the air inlet.

[0011] As a further improvement of the present technical solution, a docking interface is provided on the left side of the female mold, and a docking column is fixedly installed on the right side of the male mold. The docking column is inserted into the interior of the docking interface so that the male mold and the female mold are docked with each other. A connecting hole that passes through the interior of the air inlet is provided at the bottom of the inner wall of the docking interface, and a second flaring groove is provided on the inner wall of the connecting hole. A limiting ring is installed inside the second flaring groove, and a telescopic column is sleeved inside the limiting ring. One end of the telescopic column extends through the connecting hole to the interior of the docking interface, and the other end of the telescopic column extends through the connecting hole to the interior of the air inlet.

[0012] As a further improvement of this technical solution, the left side of the male mold is connected to the hydraulic transmission device through a connecting piece. The hydraulic transmission device is energized to drive the male mold to move left and right, so that the male mold is docked into the docking port through the docking column and closed with the female mold.

[0013] As a further improvement of the present technical solution, the outer walls of the male mold and the female mold are provided with water injection ports, which are used to connect to water cooling pipes so that the water cooling pipes circulate cooling water through the water injection ports to the interior of the male mold and the female mold, thereby accelerating the solidification and fixing of the plastic melt injected into the grooves and convex grooves.

[0014] As a further improvement of the present technical solution, the air inlet channel is arranged outside the material delivery channel, and hot air circulates in the air inlet channel to maintain the temperature of the plastic melt transported in the material delivery channel.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the injection molding machine for washing machine accessories, when the washing machine accessories are injection molded, plastic particles enter the interior of the barrel through the feed barrel at the top of the barrel, the screw driven by the drive assembly rotates inside the barrel, and the heating element heats the interior of the barrel on the outer surface of the barrel, so that the plastic particles are transported and rotated by the screw and heated and melted into plastic melt inside the barrel. The injection end of the barrel is inserted into the injection port of the connecting plate. At the same time, the male mold moves forward through the hydraulic transmission device, and the docking column of the male mold is inserted into the docking port of the female mold, so that the male and female molds are closed. The docking column pushes the telescopic column to squeeze the extrusion column and the closing plate downward, so that the air inlet is no longer closed by the closing plate, and the barrier sleeve is on the outer surface of the heating element to block the heat emitted by the heating element. The hot air is collected and transported to the air inlet of the mother mold through the connection port and air guide pipe on the top. The hot air circulates in the air inlet and the air inlet channel, heating and insulating the plastic melt flowing into the multiple feed channels in the mother mold from the injection port, so that the plastic melt enters the grooves and convex grooves to maintain the temperature and fully fill. At this time, the water injection port injects cooling water into the internal circulation of the male and female molds through the water pipe to cool down and shape the plastic melt. The male mold moves backward to open the mold through the hydraulic transmission device, and the washing machine parts shaped on the multiple convex grooves are taken out, so as to avoid the plastic melt in multiple feed channels from cooling and solidifying when multiple washing machine parts are molded at one time, and reduce the situation of bubbles, shrinkage holes, uneven bumps and defects on the surface of washing machine parts.

[0017] 2. In the injection molding machine for washing machine accessories, when the female mold and the male mold are closed, the molds are closed and docked by inserting the docking post into the inside of the docking interface. When the docking post is inserted into the docking interface, the telescopic post is squeezed to make the telescopic post move forward in the connecting hole. The connecting surface of the extrusion post and the telescopic post is set to an arc shape, so that the telescopic post can squeeze the extrusion post downward. At the same time, the extrusion post squeezes the closing plate and the return spring downward to open the air inlet, so that hot air flows from the air inlet to the air inlet channel. When the plastic melt enters the interior of the female mold, the hot air circulating in the air inlet channel can heat the plastic melt in the feed channel to maintain the temperature, thereby preventing the plastic melt from cooling and solidifying. When the male mold and the female mold are separated, the docking post leaves the docking interface, the extrusion post is no longer squeezed, the air inlet is closed, and the hot air flowing into the female mold will not be heated continuously, thereby avoiding the hot air flowing into the female mold continuously, causing the temperature of the female mold to rise, and affecting the shaping of the plastic melt.

[0018] 3. In the injection molding machine for washing machine parts, after the closing plate closes the air inlet, the residual hot air inside the air inlet channel will maintain the temperature of the plastic melt remaining in the feed channel, preventing the plastic melt from solidifying and clogging the feed channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the hydraulic transmission device of the present invention;

[0021] Figure 3 Schematic diagram of the master mold structure of the present invention;

[0022] Figure 4 Schematic diagram of the airway structure of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the mold clamping device of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the injection device of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the closing assembly of the present invention;

[0026] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0027] The meaning of each number in the figure is:

[0028] 1. Injection molding machine body;

[0029] 2. Injection device; 21. Barrel; 22. Screw; 23. Heating element;

[0030] 3. Clamping device; 31. Male mold; 32. Female mold; 33. Convex groove; 34. Groove; 35. Feed port; 36. Feed channel; 37. Air inlet channel; 38. Air inlet;

[0031] 39. Closing assembly; 301. Expanding groove 1; 302. Closing plate; 303. Extrusion column; 304. Return spring;

[0032] 3101, docking column; 3201, docking port; 3202, connecting hole; 3203, flaring groove 2; 3204, limiting ring; 3205, telescopic column;

[0033] 4. Hydraulic transmission device;

[0034] 5. Connecting plate; 51. Injection port;

[0035] 6. Gas transmission assembly; 601. Barrier sleeve; 602. Connecting port; 603. Gas guide tube;

[0036] 7. Water injection port. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0038] Example

[0039] See also Figures 1-4 As shown, the purpose of this embodiment is to provide an injection molding machine for washing machine accessories, including an injection molding machine body 1, wherein an injection device 2, a clamping device 3 and a hydraulic transmission device 4 are arranged inside the injection molding machine body 1, and the hydraulic transmission device 4 is used to control the opening and closing of the clamping device 3. The injection device 2 heats and melts the plastic particles into a plastic melt and injects it into the interior of the clamping device 3. A connecting plate 5 is arranged between the injection device 2 and the clamping device 3, and an injection port 51 is opened on the outer wall of the connecting plate 5.

[0040] The injection molding machine body 1 heats and melts the plastic particles through the injection device 2 to form a plastic melt, and injects the plastic melt into the interior of the clamping device 3 through the injection port 51 of the connecting plate 5. At this time, the clamping device 3 is clamped through the hydraulic transmission device 4, and the plastic melt injected into the mold groove of the clamping device 3 solidifies and takes shape, thereby producing washing machine accessories.

[0041] The mold closing device 3 includes a male mold 31 and a female mold 32. The right side of the female mold 32 is installed on the outer wall of the connecting plate 5, and the male mold 31 is arranged on the left side of the female mold 32. A plurality of convex grooves 33 are provided on the right side of the male mold 31, and a plurality of grooves 34 docking with the convex grooves 33 are provided on the left side of the female mold 32. A feed port 35 connected to the injection port 51 is provided on the right side of the female mold 32. The feed port 35 is located at one end inside the female mold 32 and has a plurality of feed channels 36 connected to the plurality of grooves 34. An air inlet channel 37 is provided inside the female mold 32, and an air inlet 38 connected to the air inlet channel 37 is provided at the top of the female mold 32. An air delivery component 6 is installed on the top of the air inlet 38. The air delivery component 6 is used to deliver hot air to the air inlet 38, and a closing component 39 is provided inside the air inlet 38.

[0042] The air inlet channel 37 is arranged outside the material delivery channel 36 , and hot air circulates in the air inlet channel 37 to maintain the temperature of the plastic melt transported in the material delivery channel 36 .

[0043] It can be seen that the mold surfaces of the female mold 32 and the male mold 31 are respectively provided with a plurality of grooves 34 and convex grooves 33 of the washing machine accessories. The connection surface of the female mold 32 and the connecting plate 5 is provided with a feed port 35 connected to the injection port 51. The feed port 35 is located at one end of the female mold 32 and has multiple feed channels 36, so that the feed channels 36 can connect to the multiple grooves 34. The plastic melt entering the feed port 35 is dispersed and transported through the feed channels 36, and the plastic melt is injected into the multiple grooves 34 respectively, so as to achieve the effect of molding multiple washing machine accessories at one time. The plastic melt is dispersed in the multiple channels. In the feed channel 36, the temperature of the feed melt drops faster, and an air inlet channel 37 for tail connection is opened outside the multiple feed channels 36 inside the mother mold 32, and an air inlet 38 is opened at the top of the air inlet channel 37 to pass through the top of the mother mold 32, so that the air delivery component 6 can connect the air inlet 38 through a pipeline to transport hot air to the air inlet 38 and the air inlet channel 37, so that the air inlet channel 37 outside the feed channel 36 can heat the plastic melt in the feed channel 36, thereby preventing the temperature of the plastic melt from dropping, resulting in an inability to fully fill the groove 34 after being injected.

[0044] First, consider how to transport the hot air to the interior of the mother mold 32. Figure 4-Figure 6 The specific structure of the gas delivery component 6 and the injection device 2 is disclosed. The injection device 2 includes a barrel 21, a screw 22 and a heating element 23. The screw 22 is rotatably installed inside the barrel 21. The heating element 23 is sleeved on the outer surface of the barrel 21. The heating element 23 is used to heat the inside of the barrel 21 and assist the screw 22 in melting the plastic particles into a plastic melt. The injection end of the barrel 21 is docked and installed in the injection port 51 of the connecting plate 5.

[0045] The screw 22 is rotatably mounted within the barrel 21. The screw 22 is driven by a drive assembly and can rotate within the barrel 21 to convey and heat the plastic pellets flowing down from the feed bucket at the top of the barrel 21. The heating element 23 is sleeved on the outside of the barrel 21 to assist the screw 22 in heating and melting the plastic pellets, so that the plastic pellets are melted into a plastic melt and injected from the injection end of the barrel 21 into the mother mold 32 connected to the injection port 51. The heating element 23, barrel 21, and screw 22 are existing technologies within the injection molding machine, and the internal structural connections are existing technologies. Their operating principles are common knowledge to those skilled in the art and will not be elaborated on here.

[0046] Afterwards, the gas delivery component 6 includes a barrier sleeve 601 installed on the outer surface of the heating element 23. The barrier sleeve 601 is used to block the heat emitted by the heating element 23 to the outside. A connection port 602 is provided on the top of the barrier sleeve 601. An air guide pipe 603 is installed on the outer surface of the connection port 602. The air guide pipe 603 is used to guide the hot air escaping from the heating element 23 in the barrier sleeve 601. The other end of the air guide pipe 603 is installed on the outer surface of the air inlet 38 to transport hot air into the air inlet 38.

[0047] It can be seen from the above structure that the heating element 23 is sleeved on the outside of the barrel 21 to heat the inside of the barrel 21. When the heating element 23 is sleeved on the outside of the barrel 21 for heating, heat will escape. By sleeved on the outside of the heating sleeve with a barrier sleeve 601, the hot air escaped from the heating sleeve can be collected. The barrier sleeve 601 is made of high-temperature resistant heat-insulating material. One end of the air guide tube 603 is connected to the connection port 602 opened on the top of the barrier sleeve 601, and the other end is connected to the air inlet 38 at the top of the mother mold 32. This part of the escaped hot air can be utilized, and the hot air transported by the air guide tube 603 is circulated to the air inlet 38 and the air inlet channel 37, thereby increasing the temperature inside the mother mold 32, heating and insulating the plastic melt transported in the mother mold 32 through the feed channel 36, and reducing the temperature drop of the plastic melt during transportation.

[0048] Again, considering that the plastic melt injected into the groove 34 from the mother mold 32 needs to be cooled and shaped, the problem of continuously delivering hot air through the air duct 603 will reduce the speed of cooling and shaping the plastic melt is presented. Figure 7-Figure 8, the specific structure of the closing component 39 is disclosed, the closing component 39 includes a flaring groove 301 opened on the inner wall of the air inlet 38, a closing plate 302 is installed on the top of the inner wall of the flaring groove 301, an extrusion column 303 is fixedly installed on the top of the closing plate 302, the top of the extrusion column 303 extends to the interior of the air inlet 38, a return spring 304 is installed at the bottom of the closing plate 302, the bottom of the return spring 304 is installed at the bottom of the inner wall of the flaring groove 301, the return spring 304 presses the closing plate 302 upward to fit on the top of the inner wall of the flaring groove 301, thereby blocking and closing the air inlet 38.

[0049] By opening a flaring groove 301 inside the air inlet 38, the bottom of the return spring 304 is installed at the bottom of the inner wall of the flaring groove 301, and the top is connected to the closing plate 302. The return spring 304 squeezes the closing plate 302 to close the top of the flaring groove 301 and close the air inlet 38 at the same time. By fixing an extrusion column 303 extending into the air inlet 38 on the top of the closing plate 302, the extrusion column 303 is squeezed downward, so that the return spring 304 is squeezed, driving the closing plate 302 to move downward, and no longer closing the top of the flaring groove 301, so that the air inlet 38 is communicated with the flaring groove 301, and hot air can enter the flaring groove 301 from the air inlet 38 and then enter the air inlet channel 37 for heating.

[0050] Two air guide pipes 603 are installed between the barrel 21 and the mother mold 32 to connect them and allow hot air to circulate.

[0051] From the above structural connection, it can be seen that the squeezing column 303 is installed inside the air inlet 38 to obtain the downward squeezing force. Figure 8 A docking port 3201 is provided on the left side of the female mold 32, and a docking post 3101 is fixedly installed on the right side of the male mold 31. The docking post 3101 is inserted into the interior of the docking port 3201, so that the male mold 31 and the female mold 32 are mated. A connecting hole 3202 that passes through the interior of the air inlet 38 is provided at the bottom of the inner wall of the docking port 3201, and a second flaring groove 3203 is provided on the inner wall of the connecting hole 3202. A limiting ring 3204 is installed inside the second flaring groove 3203, and a telescopic column 3205 is sleeved inside the limiting ring 3204. One end of the telescopic column 3205 passes through the connecting hole 3202 and extends to the interior of the docking port 3201, and the other end of the telescopic column 3205 passes through the connecting hole 3202 and extends to the interior of the air inlet 38.

[0052] When the female mold 32 and the male mold 31 are closed, the docking post 3101 needs to be inserted into the interior of the docking interface 3201 to close the male mold 31 and the female mold 32. A connecting hole 3202 that passes through to the air inlet 38 is opened at the bottom of the inner wall of the docking interface 3201 of the female mold 32, and a telescopic post 3205 is slidably installed inside the connecting hole 3202. One end of the telescopic post 3205 extends to the interior of the docking interface 3201, and the other end extends to the interior of the air inlet 38 and contacts with the extrusion post 303. When the docking post 3101 is inserted into the docking interface 3201, the telescopic post 3205 is squeezed to move the telescopic post 3205 forward in the connecting hole 3202, and the extrusion post 303 is pressed. The connecting surface between the male mold 31 and the telescopic column 3205 is configured in an arc shape. The telescopic column 3205 can downwardly compress the extrusion column 303, which in turn compresses the closing plate 302 and the return spring 304, opening the air inlet 38 and allowing hot air to flow into the air inlet channel 37. When the male mold 31 and the female mold 32 are closed, the plastic melt enters the interior of the female mold 32. The air inlet 38 can then be opened to heat and maintain the temperature of the plastic melt in the feed channel 36. When the male mold 31 and the female mold 32 are separated, the air inlet 38 closes, preventing the hot air from continuously flowing into the female mold 32 and causing the temperature of the female mold 32 to rise, thereby affecting the final setting of the plastic melt. After the closing plate 302 closes the air inlet 38, the remaining hot air in the air inlet channel 37 maintains the temperature of the plastic melt remaining in the feed channel 36, preventing the plastic melt from solidifying and clogging the feed channel 36.

[0053] A second flaring groove 3203 is formed on the inner wall of the connecting hole 3202, and a limiting ring 3204 is installed in the second flaring groove 3203 and is sleeved on the outer surface of the telescopic column 3205. When the docking column 3101 squeezes the telescopic column 3205, the limiting ring 3204 moves together with the telescopic column 3205 in the second flaring groove 3203. When the telescopic column 3205 squeezes the extrusion column 303 and the closing plate 302 downward to open the air inlet 38, the limiting plate just rests in the second flaring groove 3203. On the wall, the connecting hole 3202 is closed, and after the male mold 31 drives the docking column 3101 to leave, the reset spring 304 resets the closing plate 302 and the extrusion column 303, squeezes the telescopic column 3205, and the telescopic column 3205 retracts. The limiting plate rests on the other side of the inner wall of the expansion groove 2 3203, and limits the retraction of the telescopic column 3205, so that hot air cannot flow into the interior of the connecting hole 3202, thereby preventing hot air from overflowing from the docking port 3201 and affecting the shaping of the plastic melt.

[0054] Finally, considering the problem of how the male mold 31 and the female mold 32 shape the plastic melt injected into the convex groove 33 and the groove 34, the following figure is presented: Figure 3 and Figure 7The left side of the male mold 31 is connected to the hydraulic transmission device 4 via a connector. When the hydraulic transmission device 4 is energized, it moves the male mold 31 left and right, allowing the male mold 31 to dock with the docking port 3201 via the docking post 3101 and close with the female mold 32. Water inlets 7 are provided on the outer walls of both the male and female molds 31 and 32. These inlets are connected to water cooling pipes, which circulate cooling water through the inlets 7 to the interior of the male and female molds 31 and 32, accelerating the solidification and setting of the plastic melt injected into the groove 34 and the protrusion 33.

[0055] The male mold 31 is driven by the hydraulic transmission device 4 to move left and right through the left-side hinged connection part to close the mold with the female mold 32. A water injection port 7 is provided inside the male mold 31 and the female mold 32, outside the groove 34 and the convex groove 33, so that the water injection port 7 is connected to the cooling water pipe to transport cooling water to the inside of the male mold 31 and the female mold 32, and the plastic melt is filled into the cavity formed by the closing of the convex groove 33 and the groove 34. The cooling water is injected from the water inlet into the inside of the female mold 32 and the male mold 31 to circulate and cool the plastic melt. The water injection port 7 and the air inlet channel 37 are located on different planes in the female mold 32 and will not cause any impact.

[0056] In summary, the working principle of this solution is as follows:

[0057] During the injection molding production of washing machine accessories, plastic particles enter the interior of the barrel 21 through the feed barrel at the top of the barrel 21, the screw 22 driven by the drive assembly rotates inside the barrel 21, and the heating element 23 heats the interior of the barrel 21 on the outer surface of the barrel 21, so that the plastic particles are transported and rotated by the screw 22 and heated and melted into a plastic melt inside the barrel 21. The injection end of the barrel 21 is inserted into the injection port 51 of the connecting plate 5. At the same time, the male mold 31 moves forward through the hydraulic transmission device 4, and the docking column 3101 of the male mold 31 is inserted into the docking port 3201 of the female mold 32, so that the male mold 31 and the female mold 32 are closed. The docking column 3101 pushes the telescopic column 3205 to squeeze the extrusion column 303 and the closing plate 302 downward, so that the air inlet 38 is no longer closed by the closing plate 302, and the barrier sleeve 601 is on the outer surface of the heating element 23. , the hot air emitted by the heating element 23 is collected and transported to the air inlet 38 of the female mold 32 through the top connection port 602 and the air guide pipe 603. The hot air circulates in the air inlet 38 and the air inlet channel 37, heating and keeping warm the plastic melt flowing into the multiple feed channels 36 in the female mold 32 from the injection port 51, so that the plastic melt enters the interior of the groove 34 and the convex groove 33 and is fully filled. At this time, the water injection port 7 injects cooling water into the internal circulation of the male mold 31 and the female mold 32 through the water pipe to cool down and shape the plastic melt. The male mold 31 moves backward to open the mold through the hydraulic transmission device 4, and takes out the washing machine parts shaped on the multiple convex grooves 33, avoiding the situation where the plastic melt in the multiple feed channels 36 cools down and solidifies when multiple washing machine parts are molded at one time, and reducing the situation where bubbles, shrinkage holes, uneven bumps and defects are left on the surface of the washing machine parts.

[0058] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A washing machine parts injection molding machine, comprising an injection molding machine body (1), characterized in that: The injection molding machine body (1) is provided with an injection device (2), a mold clamping device (3) and a hydraulic transmission device (4), wherein the hydraulic transmission device (4) is used to control the opening and closing of the mold clamping device (3), the injection device (2) heats and melts the plastic particles into a plastic melt and injects the plastic melt into the mold clamping device (3), a connecting plate (5) is provided between the injection device (2) and the mold clamping device (3), and an injection port (51) is provided on the outer wall of the connecting plate (5); The mold clamping device (3) comprises a male mold (31) and a female mold (32), wherein the right side of the female mold (32) is mounted on the outer wall of the connecting plate (5), and the male mold (31) is arranged on the left side of the female mold (32). The right side of the male mold (31) is provided with a plurality of convex grooves (33), and the left side of the female mold (32) is provided with a plurality of grooves (34) connected to the convex grooves (33). The right side of the female mold (32) is provided with a feed port (35) connected to the injection port (51), and the feed port (35) is located at A plurality of material delivery channels (36) connected to a plurality of grooves (34) are provided at one end of the interior of the mother mold (32); an air inlet channel (37) is provided inside the mother mold (32); an air inlet (38) connected to the air inlet channel (37) is provided at the top of the mother mold (32); an air delivery component (6) is installed at the top of the air inlet (38); the air delivery component (6) is used to deliver hot air to the air inlet (38); and a closing component (39) is provided inside the air inlet (38).

2. The washing machine parts injection molding machine according to claim 1, characterized in that: The injection device (2) comprises a barrel (21), a screw (22) and a heating element (23); the screw (22) is rotatably mounted inside the barrel (21); the heating element (23) is sleeved on the outer surface of the barrel (21); the heating element (23) is used to heat the inside of the barrel (21) to assist the screw (22) in melting plastic particles into plastic melt; the injection end of the barrel (21) is butt-mounted in the injection port (51) of the connecting plate (5).

3. The washing machine parts injection molding machine according to claim 1, characterized in that: The gas transmission component (6) comprises a barrier sleeve (601) installed on the outer surface of the heating element (23), the barrier sleeve (601) being used to block the heat emitted by the heating element (23) to the outside, a connection port (602) being provided on the top of the barrier sleeve (601), an air guide tube (603) being installed on the outer surface of the connection port (602), the air guide tube (603) being used to guide the hot air emitted from the heating element (23) in the barrier sleeve (601), and the other end of the air guide tube (603) being installed on the outer surface of the air inlet (38) to transport the hot air in the air inlet (38).

4. The washing machine parts injection molding machine according to claim 1, characterized in that: The closing component (39) includes a flaring groove (301) provided on the inner wall of the air inlet (38), a closing plate (302) being installed on the top of the inner wall of the flaring groove (301), an extrusion column (303) being fixedly installed on the top of the closing plate (302), the top of the extrusion column (303) extending to the interior of the air inlet (38), a return spring (304) being installed on the bottom of the closing plate (302), the bottom of the return spring (304) being installed on the bottom of the inner wall of the flaring groove (301), the return spring (304) pressing the closing plate (302) upward to fit on the top of the inner wall of the flaring groove (301), thereby blocking and closing the air inlet (38).

5. The washing machine parts injection molding machine according to claim 1, characterized in that: The left side of the female mold (32) is provided with a docking port (3201), and the right side of the male mold (31) is fixedly provided with a docking post (3101), and the docking post (3101) is inserted into the interior of the docking port (3201) so that the male mold (31) and the female mold (32) are connected to each other, and the bottom of the inner wall of the docking port (3201) is provided with a connecting hole (3202) that passes through the interior of the air inlet (38), and the inner wall of the connecting hole (3202) is provided with a connecting hole (3202) that passes through the interior of the air inlet (38). The wall is provided with a second flaring groove (3203), a limiting ring (3204) is installed inside the second flaring groove (3203), a telescopic column (3205) is sleeved inside the limiting ring (3204), one end of the telescopic column (3205) passes through the connecting hole (3202) and extends to the inside of the docking interface (3201), and the other end of the telescopic column (3205) passes through the connecting hole (3202) and extends to the inside of the air inlet (38).

6. The washing machine parts injection molding machine according to claim 5, characterized in that: The left side of the male mold (31) is connected to the hydraulic transmission device (4) via a connecting piece. The hydraulic transmission device (4) is energized to drive the male mold (31) to move left and right, so that the male mold (31) is docked into the docking port (3201) through the docking column (3101) to close the mold with the female mold (32).

7. The washing machine parts injection molding machine according to claim 1, characterized in that: The outer walls of the male mold (31) and the female mold (32) are both provided with water injection ports (7), and the water injection ports (7) are used to connect to a water cooling pipe, so that the water cooling pipe circulates cooling water through the water injection ports (7) to the inside of the male mold (31) and the female mold (32), thereby accelerating the solidification and fixing of the plastic melt injected into the groove (34) and the convex groove (33).

8. The washing machine parts injection molding machine according to claim 1, characterized in that: The air inlet channel (37) is arranged outside the material delivery channel (36), and hot air circulates in the air inlet channel (37) to maintain the temperature of the plastic melt transported in the material delivery channel (36).

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