Injection molding mold convenient to demold and used for automobile plastic part production

Abstract

The invention relates to the technical field of automobile plastic part injection molding, and particularly discloses an injection molding mold convenient to demold and used for automobile plastic part production. The injection molding mold comprises a workbench, a male mold part is fixedly connected to the top of the workbench, an injection molding part is fixedly connected to the side, away from the male mold part, of the top of the workbench, and a conveying part is rotationally connected to an inner cavity of the workbench. The ejection blocks in the female die plate are separated from the female die plate along with the male die plate, move into the female die plate, gradually make contact with the female die plate and eject out the plastic parts, and due to the fact that the ejection blocks are evenly distributed in the female die groove, the plastic parts are evenly stressed in the ejection process and can be stably separated from the female die groove, and in the demolding process, the plastic parts are not prone to falling off. The stroke and speed of the electric hydraulic rod can be adjusted according to actual conditions, and it is guaranteed that the plastic part is smoothly demoulded and not damaged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile plastic part injection molding, in particular to an injection molding mold for automobile plastic part production which is easy to demould. Background Art

[0002] Automobile plastic parts, the average specific gravity of various plastics is only 15%-20% of that of ordinary steel, and is also lighter than ordinary wood, which helps to reduce the weight of the car. For high-end large cars, it can effectively reduce fuel consumption and improve performance. It has good insulation performance, excellent corrosion resistance, aging resistance, good wear resistance and washability, good waterproof performance and mechanical properties, good bonding performance, and can be processed into various automotive interior and exterior accessories requiring multiple performance and functions. Due to the plasticity of polymer automotive materials and their good compatibility and combination with other materials, different material components can be used with the help of various modern molding and processing machinery, through extrusion, injection molding, calendering, molding, blow molding and other methods to process into polymer automotive materials with various shapes, different performances, different colors and different functions.

[0003] Injection molding is a commonly used processing method in the production process of automotive plastic parts. The performance of injection molding molds directly affects the quality and production efficiency of plastic parts. Traditional injection molding molds often have some problems when demolding. Plastic parts are easy to adhere to the surface of the mold cavity, which makes demolding difficult and requires a large demolding force. This may not only damage the plastic parts, but also damage the mold and shorten the service life of the mold. During the demolding process, if the plastic parts cannot be uniformly stressed, they are likely to deform, affecting their dimensional accuracy and appearance quality, and failing to meet the strict quality requirements of automotive parts. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an injection molding mold for producing automobile plastic parts that is easy to demould, comprising: A workbench, wherein a male mold component is fixedly connected to the top of the workbench, an injection molding component is fixedly connected to the side of the top of the workbench away from the male mold component, a conveying component is rotatably connected to the inner cavity of the workbench, and buffer components are fixedly connected to both sides of the inner cavity of the workbench, and the buffer components are arranged above the conveying component; A female mold component, the female mold component is used for molding and demoulding of automobile plastic parts, the bottom of the female mold component is fixedly connected to the top of the workbench, the top of the workbench is provided with a blanking opening, and the blanking opening is opened between the male mold component and the female mold component; The male mold component comprises a mold clamping cylinder and a male mold plate, the bottom of the mold clamping cylinder is fixedly connected to the top of the workbench, the bottom of the male mold plate is slidably connected to the top of the workbench, the output end of the mold clamping cylinder is fixedly connected to an output rod, the end of the output rod away from the mold clamping cylinder is fixedly connected to the male mold plate, the side of the mold clamping cylinder is evenly provided with guide rods, the side of the guide rod is slidably connected to the inner side of the mold clamping cylinder, the other end of the guide rod is fixedly connected to the male mold plate, and the end of the male mold plate away from the output rod is fixedly connected to a male module; by opening the mold clamping cylinder, the output end of the mold clamping cylinder drives the male mold plate through the output rod, and at the same time moves toward the female mold plate through the guide rod, so that the male module is against the female mold groove, so that the male module cavity is closely fitted with the female mold groove cavity to form a closed cavity space; The injection molding component comprises a fixed plate, the bottom of the fixed plate is fixedly connected to the top of the workbench, the inner side of the fixed plate is fixedly connected to an injection molding machine, the side of the injection molding machine is fixedly connected to a first motor, the other side of the injection molding machine is fixedly connected to the inner side of a feed hole, the inner side of the injection molding machine is rotatably connected to a spiral blade, the output end of the first motor is fixedly connected to one end of the spiral blade, and the side of the injection molding machine is fixedly connected to a feeding mechanism; by continuously placing the injection molding raw material particles in the injection molding machine through the feeding mechanism, melting and feeding work is performed, and the granular raw materials continuously entering the injection molding machine are guided and fed through the feeding mechanism, and at the same time, by turning on the first motor, the spiral blade is driven to move continuously in the injection molding machine through the output end of the first motor, so as to melt and convey the plastic raw materials, and the molten plastic raw materials are injected into the feed hole through the nozzle of the injection molding machine, and under the action of the injection pressure, the plastic raw materials fill the entire cavity; Preferably, the feeding mechanism comprises a feeding shell, the side surface of the feeding shell is fixedly connected to the inner side of the injection molding machine, the inner side of the feeding shell is fixedly connected to a feeding plate, the inner side of the feeding plate is an arc surface arranged from high to low, the inner side of the feeding shell is fixedly connected to a lower bracket, the inner side of the feeding shell is fixedly connected to an upper bracket above the lower bracket, the bottom of the upper bracket is rotatably connected to a rotating shaft, the bottom of the rotating shaft is rotatably connected to the top of the lower bracket, the bottom of the lower bracket is fixedly connected to a second motor, the output end of the second motor is fixedly connected to the bottom of the rotating shaft, the side of the rotating shaft is fixedly connected to a bulking rod, and the side of the rotating shaft away from the bulking rod is fixedly connected to a cleaning component; when the injection molding is continuously When the feeding work is carried out in the machine, the second motor is turned on, and the output end of the second motor drives the rotating shaft to rotate in the upper bracket and the lower bracket, so that the rotating shaft drives the bulk rod to rotate in the inner cavity of the feeding shell, so as to stir the raw material particles that continuously enter the feeding shell, thereby avoiding the phenomenon of raw material particles being blocked when the raw material particles are fed, and at the same time, when the weather is hot, the raw material particles are prevented from sticking when passing through the feeding shell, thereby adhering to the inner wall of the feeding shell, thereby causing the plastic particles to be blocked and sticky. When the rotating shaft rotates in the feeding shell, the cleaning component can be driven by the rotating shaft to contact and clean the inner wall of the feeding shell; Preferably, the cleaning assembly includes a cleaning rod, the side surface of the cleaning rod is fixedly connected to the inner side of the rotating shaft, the cleaning rod one end away from the rotating shaft is slidably connected to a sliding rod, the other end of the sliding rod is fixedly connected to an arc plate, the side of the arc plate is fixedly connected to a scraper, the scraper is in contact with the inner wall of the feed shell on the side away from the sliding rod, and a first spring is sleeved on the sliding rod, one end of the first spring is fixedly connected to the arc plate, and the other end of the first spring is fixedly connected to the cleaning rod; in hot weather, due to the increase in ambient temperature, the heat dissipation condition of the feed shell becomes worse, the temperature is too high and lasts for a long time, the viscosity of the plastic particles will increase, thereby serious sticking phenomenon occurs, and it may even cause the plastic in the feed shell to agglomerate, affecting the normal operation of the injection molding machine, when the rotating shaft rotates through the output end of the second motor, and at the same time, the rotating shaft drives the arc plate through the cleaning rod and the sliding rod The scraper plate is rotated in the inner cavity of the shell, so that the arc plate squeezes out the plastic particles stuck on the inner wall of the feed shell, and at the same time, the arc plate continues to rotate following the cleaning rod and the sliding rod, so that the arc plate can drive the scraper plate to contact and rotate with the inner wall of the feed shell, thereby contacting and rotating the inner wall of the feed shell, thereby preventing the sticky impurities attached to the plastic particles from remaining on the inner wall of the feed shell, thereby continuing to stick to the plastic particles in the feed shell. When the continuous extrusion force between the scraper plate and the sticky impurities attached to the inner wall of the feed shell is greater than the tensile force of the first spring, the scraper plate moves toward the sliding rod, thereby causing the sliding rod to slide in the cleaning rod, and at the same time, through the buffering work of the first spring, it is avoided that the extrusion force between the scraper plate and the sticky impurities attached to the inner wall of the feed shell when cleaning the inner wall of the feed shell is too large, thereby causing extrusion damage to the scraper plate.

[0005] Preferably, the female mold component includes a connecting plate, the bottom of the connecting plate is fixedly connected to the top of the workbench, a feeding hole is opened in the middle of the side of the connecting plate, guide columns are evenly arranged on the side of the connecting plate, the side of the guide column is fixedly connected to the inner side of the connecting plate, the end of the guide column away from the connecting plate is fixedly connected to the female mold plate, the side of the female mold plate close to the guide column is fixedly connected to the ejection mechanism, the side of the female mold plate away from the guide column is fixedly connected to the connecting column, the side of the connecting column is slidably connected to the inner side of the male mold plate, a female mold groove is opened in the middle of the side of the female mold plate away from the guide column, and the side of the female mold groove is evenly opened with ejection grooves; Preferably, the ejection mechanism comprises an electric hydraulic rod, the electric hydraulic rod is fixedly connected to one side of the connecting plate close to the concave template, the output end of the electric hydraulic rod is fixedly connected to the ejection plate, the other side of the ejection plate is fixedly connected to the ejection shaft, the other end of the ejection shaft is fixedly connected to a limiting block, the inner side of the limiting block is fixedly connected to the ejection block, and the side surface of the ejection block is slidably connected to the inner side of the ejection groove; the plastic part is gradually cooled and formed in the cavity, and after the plastic part is cooled to a certain degree, when the automotive plastic part in the concave mold part is demoulded, the output end of the mold closing cylinder drives the convex template to separate from the concave template through the output rod, By turning on the electric hydraulic rod, the output end of the electric hydraulic rod drives the ejector shaft to move toward the concave mold plate through the ejector plate, so that the ejector shaft drives the ejector block to continue to move in the ejector groove until the limit block abuts against the side of the concave mold plate. When the male mold plate is separated from the female mold plate, the ejector block in the female mold plate moves toward the female mold plate, gradually contacts and ejects the plastic part. Since the ejector blocks are evenly distributed in the female mold groove, the plastic part is evenly stressed during the ejection process and can be smoothly separated from the female mold groove. During the demolding process, the stroke and speed of the electric hydraulic rod can be adjusted according to the actual situation to ensure that the plastic part is demolded smoothly without being damaged. Preferably, the buffer component comprises a sliding groove, the sliding groove is evenly opened at the top of the inner cavity of the workbench, a round rod is fixedly connected to the inner side of the sliding groove, a moving mechanism is slidably connected to the side of the round rod, and a second spring is sleeved on the round rod; Preferably, the moving mechanism includes four moving frames, the top of the moving frame is fixedly connected with a slider, the side of the slider is slidably connected to the inner side of the sliding groove, the inner side of the slider is slidably connected to the side of the round rod, one end of the second spring is fixedly connected to the slider, the other end of the second spring is fixedly connected to the inner wall of the sliding groove, the sides of two of the moving frames are rotatably connected with rotating rollers, the sides of the moving frame are fixedly connected with connecting rods, and the sides of two of the connecting rods are rotatably connected with auxiliary rollers; the automobile injection molded parts after demolding and unloading by the ejection mechanism fall through the blanking port, so that the injection molded parts contact and rotate with the rotating rollers, so that the rotating rollers cushion the injection molded parts when they fall. When the injection molded part falls through between the two rotating rollers, when the injection molded part contacts and squeezes the rotating rollers, the slider moves in the sliding groove, so that the slider drives the moving frame to move, and at the same time, the buffering work of the second spring is used to avoid the rotating roller from getting stuck on the injection molded part when it contacts with the injection molded part. At the same time, the injection molded part continues to fall downward, and a connecting rod and an auxiliary roller are arranged on the side of the moving frame. The angle of the auxiliary roller is greater than that of the rotating roller. Therefore, when the plastic part continues to fall downward, the auxiliary roller can guide the falling plastic part, so that the injection molded part can fall smoothly on the conveyor belt for transportation and unloading.

[0006] Preferably, the conveying component includes an active roller, both ends of the active roller are rotatably connected to the inner side of the workbench, and driven rollers are evenly arranged on the inner side of the workbench, both ends of the driven roller are rotatably connected to the inner side of the workbench, and a third motor is fixedly connected to the side of the workbench, and the output end of the third motor is fixedly connected to one end of the active roller, and a conveyor belt is sleeved on the side of the active roller and the driven roller; by turning on the third motor, the active roller is driven to rotate by the output end of the third motor, so that the active roller rotates under the drive of the output end of the third motor, and power is transmitted between it and the conveyor belt through friction. The conveyor belt is usually annular and wrapped around a part of the surface of the active roller. When the active roller rotates, due to the action of friction, the conveyor belt will start to move in the rotation direction of the active roller, and the driven roller mainly supports the conveyor belt and changes the movement direction of the conveyor belt, thereby continuously conveying and unloading the plastic parts dropped on the conveyor belt.

[0007] The present invention provides an injection molding mold for producing automobile plastic parts that is easy to demould. It has the following beneficial effects: 1. This injection molding mold for producing automobile plastic parts that is easy to demold is provided with an ejection mechanism. When the male mold plate 24 is separated from the female mold plate 33, the ejection block 365 in the female mold plate 33 moves toward the female mold plate 33, gradually contacts and ejects the plastic part. Since the ejection blocks are evenly distributed in the female mold groove, the plastic part is evenly stressed during the ejection process and can be smoothly separated from the female mold groove. During the demolding process, the stroke and speed of the electric hydraulic rod can be adjusted according to actual conditions to ensure that the plastic part is smoothly demolded and not damaged.

[0008] 2. This injection molding mold for the production of automobile plastic parts that is easy to demold is provided with a feeding mechanism to stir the raw material particles that continuously enter the feeding shell, thereby avoiding the phenomenon of raw material particles being blocked when feeding the raw material particles. At the same time, in hot weather, it is avoided that the raw material particles will stick when passing through the feeding shell, thereby adhering to the inner wall of the feeding shell, thereby causing the plastic particles to be blocked and sticky. When the rotating shaft rotates in the feeding shell, the cleaning component can be driven by the rotating shaft to contact and clean the inner wall of the feeding shell.

[0009] 3. The injection molding mold for the production of automobile plastic parts that is easy to demold is provided with a cleaning component. In hot weather, due to the increase in ambient temperature, the heat dissipation condition of the feed shell becomes worse. If the temperature is too high and lasts for a long time, the viscosity of the plastic particles will increase, resulting in serious sticking phenomenon, and may even cause plastic agglomeration in the feed shell, affecting the normal operation of the injection molding machine. The rotating shaft drives the arc plate through the cleaning rod and the sliding rod, so that the arc plate squeezes out the plastic particles stuck to the inner wall of the feed shell. At the same time, the arc plate continues to rotate with the cleaning rod and the sliding rod, and contacts and rotates with the inner wall of the feed shell, thereby preventing the sticky impurities attached to the plastic particles from remaining on the inner wall of the feed shell, thereby preventing the plastic particles in the feed shell from continuing to stick.

[0010] 4. This injection molding mold for the production of automobile plastic parts that is easy to demold is provided with a moving mechanism. A connecting rod and an auxiliary roller are arranged on the side of the moving frame. The angle of the auxiliary roller is greater than that of the rotating roller. Therefore, when the plastic parts continue to fall downward, the auxiliary roller can guide the falling plastic parts, so that the injection molded parts can fall smoothly on the conveyor belt for transportation and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of an injection molding mold for producing automobile plastic parts that is easy to demould according to the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the male mold component of the present invention; Figure 4 It is a schematic structural diagram of the injection molded component of the present invention; Figure 5 It is a structural schematic diagram of the feeding mechanism of the present invention; Figure 6 For the present invention Figure 5 The structural diagram at A in the middle; Figure 7 It is a structural schematic diagram of the concave mold component of the present invention; Figure 8 It is a structural schematic diagram of the concave template of the present invention; Fig. 9 It is a schematic diagram of the ejection mechanism structure of the present invention; Fig.10 It is a structural schematic diagram of the ejector block of the present invention; Fig.11 This is a schematic diagram of the structure of the buffer component of the present invention; Fig.12 It is a schematic diagram of the structure of the mobile mechanism of the present invention; Fig.13 It is a schematic diagram of the structure of the conveying component of the present invention.

[0012] In the figure: 1, workbench; 2, male mold component; 21, mold clamping cylinder; 22, guide rod; 23, output rod; 24, male mold plate; 25, male mold plate; 3, female mold component; 31, connecting plate; 32, guide column; 33, female mold plate; 34, feed hole; 35, connecting column; 36, ejector mechanism; 361, electric hydraulic rod; 362, ejector plate; 363, ejector shaft; 364, limit block; 365, ejector block; 37, female mold groove; 38, ejector groove; 4, injection molding component; 41, fixed plate; 42, injection molding machine; 43, first motor; 44, spiral blade; 45, feeding mechanism; 451, feeding shell; 452, Feed plate; 453, lower bracket; 454, upper bracket; 455, rotating shaft; 456, second motor; 457, bulk rod; 458, cleaning assembly; 4581, cleaning rod; 4582, sliding rod; 4583, arc plate; 4584, scraper; 4585, first spring; 5, conveying component; 51, active roller; 52, driven roller; 53, third motor; 54, conveyor belt; 6, buffer component; 61, sliding groove; 62, round rod; 63, moving mechanism; 631, moving frame; 632, slider; 633, rotating roller; 634, connecting rod; 635, auxiliary roller; 64, second spring; 7, drop port. DETAILED DESCRIPTION

[0013] 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.

[0014] See also Figure 1-Figure 3 The present invention provides a technical solution: an injection molding mold for producing automobile plastic parts that is easy to demould, comprising: A workbench 1, a male mold component 2 is fixedly connected to the top of the workbench 1, an injection molding component 4 is fixedly connected to the side of the top of the workbench 1 away from the male mold component 2, a conveying component 5 is rotatably connected to the inner cavity of the workbench 1, and buffer components 6 are fixedly connected to both sides of the inner cavity of the workbench 1, and the buffer components 6 are arranged above the conveying component 5; The female mold part 3 is used for molding and demoulding of automobile plastic parts. The bottom of the female mold part 3 is fixedly connected to the top of the workbench 1. The top of the workbench 1 is provided with a blanking opening 7, which is opened between the male mold part 2 and the female mold part 3. The male mold component 2 includes a mold clamping cylinder 21 and a male mold plate 24. The bottom of the mold clamping cylinder 21 is fixedly connected to the top of the workbench 1, and the bottom of the male mold plate 24 is slidably connected to the top of the workbench 1. The output end of the mold clamping cylinder 21 is fixedly connected to an output rod 23, and one end of the output rod 23 away from the mold clamping cylinder 21 is fixedly connected to the male mold plate 24. Guide rods 22 are evenly arranged on the side of the mold clamping cylinder 21. The side of the guide rod 22 is slidably connected to the inner side of the mold clamping cylinder 21, and the other end of the guide rod 22 is fixedly connected to the male mold plate 24. The end of the male mold plate 24 away from the output rod 23 is fixedly connected to a male module 25; by opening the mold clamping cylinder 21, the output end of the mold clamping cylinder 21 drives the male mold plate 24 through the output rod 23, and at the same time moves to the female mold plate 33 through the guide rod 22, so that the male module 25 is against the female mold groove 37, so that the male module 25 cavity and the female mold groove 37 cavity are closely fitted to form a closed cavity space; See also Figure 4-Figure 6 The present invention provides a technical solution: the injection molding component 4 includes a fixed plate 41, the bottom of the fixed plate 41 is fixedly connected to the top of the workbench 1, the inner side of the fixed plate 41 is fixedly connected to an injection molding machine 42, the side of the injection molding machine 42 is fixedly connected to a first motor 43, the other side of the injection molding machine 42 is fixedly connected to the inner side of the feed hole 34, the inner side of the injection molding machine 42 is rotatably connected to a spiral blade 44, the output end of the first motor 43 is fixedly connected to one end of the spiral blade 44, and the side of the injection molding machine 42 is fixedly connected to a feeding mechanism 45; by The material particles are continuously placed in the injection molding machine 42 through the feeding mechanism 45 for melting and feeding. The granular material continuously entering the injection molding machine 42 is guided and fed through the feeding mechanism 45. At the same time, the first motor 43 is turned on, and the spiral blade 44 is driven to move continuously in the injection molding machine 42 through the output end of the first motor 43, so as to melt and transport the plastic material. The molten plastic material is injected into the feeding hole 34 through the nozzle of the injection molding machine 42. Under the action of the injection pressure, the plastic material fills the entire cavity; The feeding mechanism 45 includes a feeding shell 451, the side of the feeding shell 451 is fixedly connected to the inner side of the injection molding machine 42, a feeding plate 452 is fixedly connected to the inner side of the feeding shell 451, the inner side of the feeding plate 452 is an arc surface arranged from high to low, a lower bracket 453 is fixedly connected to the inner side of the feeding shell 451, an upper bracket 454 is fixedly connected to the inner side of the feeding shell 451 above the lower bracket 453, a rotating shaft 455 is rotatably connected to the bottom of the upper bracket 454, the bottom of the rotating shaft 455 is rotatably connected to the top of the lower bracket 453, a second motor 456 is fixedly connected to the bottom of the lower bracket 453, an output end of the second motor 456 is fixedly connected to the bottom of the rotating shaft 455, a bulking rod 457 is fixedly connected to the side of the rotating shaft 455, and a cleaning component 458 is fixedly connected to the side of the rotating shaft 455 away from the bulking rod 457; when the injection molding machine 42 is continuously fed to the injection molding machine 42, the feeding mechanism 45 2, by turning on the second motor 456, the output end of the second motor 456 drives the rotating shaft 455 to rotate in the upper bracket 454 and the lower bracket 453, so that the rotating shaft 455 drives the bulk rod 457 to rotate in the inner cavity of the feed shell 451, thereby stirring the raw material particles that continuously enter the feed shell 451, thereby avoiding the raw material particles from being blocked during the feeding work, and at the same time, in hot weather, avoiding the raw material particles from sticking when passing through the feed shell 451, thereby adhering to the inner wall of the feed shell 451, thereby causing the plastic particles to be blocked and sticky. When the rotating shaft 455 rotates in the feed shell 451, the cleaning component 458 can be driven by the rotating shaft 455 to contact and clean the inner wall of the feed shell 451; The cleaning assembly 458 includes a cleaning rod 4581, the side of the cleaning rod 4581 is fixedly connected to the inner side of the rotating shaft 455, the end of the cleaning rod 4581 away from the rotating shaft 455 is slidably connected to a sliding rod 4582, the other end of the sliding rod 4582 is fixedly connected to an arc plate 4583, the side of the arc plate 4583 is fixedly connected to a scraper 4584, the side of the scraper 4584 away from the sliding rod 4582 is in contact with the inner wall of the feed housing 451, and the sliding rod 4582 is sleeved with a first spring 4585, one end of the first spring 4585 is fixedly connected to the arc plate 4583. The other end of the first spring 4585 is fixedly connected to the cleaning rod 4581; in hot weather, due to the increase in ambient temperature, the heat dissipation condition of the feed housing 451 becomes worse. If the temperature is too high and lasts for a long time, the viscosity of the plastic particles will increase, resulting in serious sticking phenomenon, which may even cause the plastic in the feed housing 451 to agglomerate, affecting the normal operation of the injection molding machine 42. When the rotating shaft 455 rotates through the output end of the second motor 456, the rotating shaft 455 drives the arc plate 4583 through the cleaning rod 4581 and the sliding rod 4582 to rotate in the feed housing. The circular arc plate 4583 rotates in the inner cavity of the material feeding shell 451, so that the circular arc plate 4583 squeezes the plastic particles adhering to the inner wall of the material feeding shell 451, and at the same time, the circular arc plate 4583 follows the cleaning rod 4581 and the sliding rod 4582 to continuously rotate, so that the circular arc plate 4583 can drive the scraper 4584 to contact and rotate with the inner wall of the material feeding shell 451, thereby contacting and rotating the inner wall of the material feeding shell 451, thereby preventing the sticky impurities attached to the plastic particles from remaining on the inner wall of the material feeding shell 451, thereby continuing to release the plastic particles in the material feeding shell 451. When the continuous squeezing force between the scraper 4584 and the viscous impurities attached to the inner wall of the feed shell 451 is greater than the tensile force of the first spring 4585, the scraper 4584 moves toward the sliding rod 4582, so that the sliding rod 4582 slides in the cleaning rod 4581. At the same time, the buffering work of the first spring 4585 can prevent the scraper 4584 from being squeezed too much by the viscous impurities attached to the inner wall of the feed shell 451 when cleaning the inner wall of the feed shell 451, thereby causing squeezing damage to the scraper 4584.

[0015] See also Figure 7-10The present invention provides a technical solution: the female mold component 3 includes a connecting plate 31, the bottom of the connecting plate 31 is fixedly connected to the top of the workbench 1, a feeding hole 34 is opened in the middle of the side of the connecting plate 31, and guide columns 32 are evenly arranged on the side of the connecting plate 31. The side of the guide column 32 is fixedly connected to the inner side of the connecting plate 31, and the end of the guide column 32 away from the connecting plate 31 is fixedly connected to a female mold plate 33, and the side of the female mold plate 33 close to the guide column 32 is fixedly connected to an ejection mechanism 36, and the side of the female mold plate 33 away from the guide column 32 is fixedly connected to a connecting column 35, and the side of the connecting column 35 is slidably connected to the inner side of the male mold plate 24, and a female mold groove 37 is opened in the middle of the side of the female mold plate 33 away from the guide column 32, and the side of the female mold groove 37 is evenly opened with ejection grooves 38; The ejection mechanism 36 includes an electric hydraulic rod 361, which is fixedly connected to one side of the connecting plate 31 close to the concave mold plate 33, and the output end of the electric hydraulic rod 361 is fixedly connected to the ejection plate 362, and the other side of the ejection plate 362 is fixedly connected to the ejection shaft 363, and the other end of the ejection shaft 363 is fixedly connected to the limit block 364, and the inner side of the limit block 364 is fixedly connected to the ejection block 365, and the side of the ejection block 365 is slidably connected to the inner side of the ejection groove 38; the plastic part is gradually cooled and formed in the cavity. After the plastic part is cooled to a certain degree, when the automotive plastic part in the concave mold part 3 is demolded, the output end of the mold closing cylinder 21 drives the convex mold plate 24 to separate from the concave mold plate 33 through the output rod 23, thereby opening the electric hydraulic The output end of the pressure rod 361 and the electric hydraulic rod 361 drives the ejection shaft 363 to move toward the concave mold plate 33 through the ejection plate 362, so that the ejection shaft 363 drives the ejection block 365 to continue to move in the ejection groove 38 until the limit block 364 abuts against the side of the concave mold plate 33. When the male mold plate 24 is separated from the concave mold plate 33, the ejection block 365 in the concave mold plate 33 moves into the concave mold plate 33, gradually contacts and ejects the plastic part. Since the ejection blocks 365 are evenly distributed in the concave mold groove 37, the plastic part is evenly stressed during the ejection process and can be smoothly separated from the concave mold groove 37. During the demolding process, the stroke and speed of the electric hydraulic rod 361 can be adjusted according to the actual situation to ensure that the plastic part is demolded smoothly without being damaged. See also Figure 11-Figure 12 The present invention provides a technical solution: the buffer component 6 includes a sliding groove 61, the sliding groove 61 is evenly opened at the top of the inner cavity of the workbench 1, the inner side of the sliding groove 61 is fixedly connected to a round rod 62, the side of the round rod 62 is slidably connected to a moving mechanism 63, and the round rod 62 is sleeved with a second spring 64; The moving mechanism 63 includes four moving frames 631, the top of the moving frame 631 is fixedly connected with a slider 632, the side of the slider 632 is slidably connected to the inner side of the sliding groove 61, the inner side of the slider 632 is slidably connected to the side of the round rod 62, one end of the second spring 64 is fixedly connected to the slider 632, and the other end of the second spring 64 is fixedly connected to the inner wall of the sliding groove 61, the sides of the two moving frames 631 are rotatably connected with rotating rollers 633, the sides of the moving frames 631 are fixedly connected with connecting rods 634, and the sides of the two connecting rods 634 are rotatably connected with auxiliary rollers 635; the automobile injection molded parts after demoulding and unloading by the ejection mechanism 36 fall through the blanking port 7, so that the injection molded parts are contacted and rotated with the rotating rollers 633, so that the rotating rollers 633 buffer the injection molded parts when they fall, and when the injection molded parts are When the plastic part falls through between the two rotating rollers 633, when the injection molded part contacts and squeezes the rotating roller 633, the slider 632 moves in the sliding groove 61, so that the slider 632 drives the moving frame 631 to move, and at the same time, the buffering work of the second spring 64 is used to avoid the injection molded part being stuck by the rotating roller 633 when the rotating roller 633 contacts the injection molded part. At the same time, the injection molded part continues to fall downward. By setting a connecting rod 634 and an auxiliary roller 635 on the side of the moving frame 631, the angle of the auxiliary roller 635 is greater than that of the rotating roller 633. When the plastic part continues to fall and move downward, the auxiliary roller 635 can guide the falling plastic part, so that the injection molded part can fall smoothly on the conveyor belt 54 for transportation and unloading.

[0016] See also Fig.13 The present invention provides a technical solution: the conveying component 5 includes an active roller 51, both ends of the active roller 51 are rotatably connected to the inner side of the workbench 1, and driven rollers 52 are evenly arranged on the inner side of the workbench 1. Both ends of the driven roller 52 are rotatably connected to the inner side of the workbench 1. A third motor 53 is fixedly connected to the side of the workbench 1, and the output end of the third motor 53 is fixedly connected to one end of the active roller 51. A conveyor belt 54 is sleeved on the side of the active roller 51 and the driven roller 52; by turning on the third motor 53, the active roller is driven by the output end of the third motor 53. 51 rotates, so that the active roller 51 rotates under the drive of the output end of the third motor 53, and the power is transmitted between it and the conveyor belt 54 through friction. The conveyor belt 54 is usually annular and wrapped around a part of the surface of the active roller 51. When the active roller 51 rotates, due to the effect of friction, the conveyor belt 54 will start to move in the rotation direction of the active roller 51. The driven roller 52 mainly supports the conveyor belt 54 and changes the movement direction of the conveyor belt 54, so as to continuously transport and discharge the plastic parts dropped on the conveyor belt 54; Specific workflow: The male mold part 2 is started, so that the male mold part 2 cavity and the female mold part 3 cavity are closely fitted to form a closed cavity space, and the plastic raw material is injected into the cavity through the injection molding part 4. Under the action of the injection pressure, the plastic raw material fills the entire cavity. During the injection molding process, according to the structure and size requirements of the plastic part, the injection pressure and injection speed are reasonably controlled to ensure that the plastic raw material can evenly and completely fill the cavity: After the plastic raw material fills the cavity, a certain pressure is maintained for a period of time to compensate for the volume change of the plastic during the cooling and shrinkage process to prevent the plastic part from shrinking. If there are defects such as shrinkage holes and depressions, after the pressure holding is completed, the cavity is cooled through the cooling water channel of the mold, so that the plastic part is gradually cooled and shaped in the cavity. After the plastic part is cooled to a certain degree, the automobile plastic part in the concave mold part 3 is demolded, and the automobile plastic part that is demolded and dropped continues to drop downward through the drop opening 7, and contacts with the buffer part 6, so as to buffer and guide the dropped automobile plastic part, so that the automobile plastic part after injection molding falls smoothly on the conveying part 5, and the automobile plastic part is continuously conveyed and discharged through the conveying part 5; By opening the mold clamping cylinder 21, the output end of the mold clamping cylinder 21 drives the male mold plate 24 through the output rod 23, and at the same time moves toward the female mold plate 33 through the guide rod 22, so that the male mold plate 25 is against the female mold groove 37, so that the mold cavity of the male mold plate 25 is closely fitted with the mold cavity of the female mold groove 37, forming a closed mold cavity space; The injection molding raw material particles are continuously placed in the injection molding machine 42 through the feeding mechanism 45 to perform melting and feeding work. The granular raw materials continuously entering the injection molding machine 42 are guided and fed through the feeding mechanism 45. At the same time, the first motor 43 is turned on, and the spiral blade 44 is driven to continuously move in the injection molding machine 42 through the output end of the first motor 43, so as to melt and transport the plastic raw materials. The molten plastic raw materials are injected into the feeding hole 34 through the nozzle of the injection molding machine 42. Under the action of the injection pressure, the plastic raw materials fill the entire cavity. When the injection molding machine 42 is continuously fed with materials, the second motor 456 is turned on, and the output end of the second motor 456 drives the rotating shaft 455 to rotate in the upper bracket 454 and the lower bracket 453, so that the rotating shaft 455 drives the bulk rod 457 to rotate in the inner cavity of the feed shell 451, thereby stirring the raw material particles continuously entering the feed shell 451, thereby avoiding the raw material particles from being blocked when feeding the raw material particles, and at the same time, when the weather is hot, avoiding the raw material particles from sticking when passing through the feed shell 451, thereby adhering to the inner wall of the feed shell 451, thereby causing the plastic particles to be blocked and sticky. When the rotating shaft 455 rotates in the feed shell 451, the cleaning component 458 can be driven by the rotating shaft 455 to contact and clean the inner wall of the feed shell 451; In hot weather, due to the increase in ambient temperature, the heat dissipation condition of the feed shell 451 becomes worse. If the temperature is too high and lasts for a long time, the viscosity of the plastic particles will increase, resulting in serious sticking, which may even cause the plastic in the feed shell 451 to clump, affecting the normal operation of the injection molding machine 42. When the rotating shaft 455 rotates through the output end of the second motor 456, the rotating shaft 455 drives the arc plate 4583 through the cleaning rod 4581 and the sliding rod 4582 to rotate in the inner cavity of the feed shell 451, so that the arc plate 4583 squeezes off the plastic particles stuck to the inner wall of the feed shell 451, and at the same time, the arc plate 4583 continues to rotate with the cleaning rod 4581 and the sliding rod 4582, so that the arc plate 4583 can drive the scraper 4584 and the feed shell 451 The first spring 4585 is used to move the scraper 4584 toward the sliding rod 4582, thereby making the sliding rod 4582 slide in the cleaning rod 4581. At the same time, the first spring 4585 is used to buffer the scraper 4584, thereby preventing the scraper 4584 from having too much pressure on the viscous impurities attached to the inner wall of the feed shell 451 when cleaning the inner wall of the feed shell 451, thereby causing extrusion damage to the scraper 4584. The plastic part is gradually cooled and shaped in the mold cavity. After the plastic part is cooled to a certain degree, when the automobile plastic part in the concave mold part 3 is demolded, the output end of the mold clamping cylinder 21 drives the convex mold plate 24 to separate from the concave mold plate 33 through the output rod 23, so that by turning on the electric hydraulic rod 361, the output end of the electric hydraulic rod 361 drives the ejection shaft 363 to move toward the concave mold plate 33 through the ejection plate 362, so that the ejection shaft 363 drives the ejection block 365 to continue to move in the ejection groove 38 until The limit block 364 abuts against the side of the concave mold plate 33. When the male mold plate 24 is separated from the concave mold plate 33, the ejection block 365 in the concave mold plate 33 moves into the concave mold plate 33, gradually contacts and ejects the plastic part. Since the ejection blocks 365 are evenly distributed in the concave mold groove 37, the plastic part is evenly stressed during the ejection process and can be smoothly separated from the concave mold groove 37. During the demolding process, the stroke and speed of the electric hydraulic rod 361 can be adjusted according to the actual situation to ensure that the plastic part is demolded smoothly without being damaged. When the cavity of the male module 25 and the cavity of the female mold groove 37 are closely fitted to form a closed cavity space and injection molding is required, the electric hydraulic rod 361 is turned on, and the output end of the electric hydraulic rod 361 drives the ejection shaft 363 to move toward the connecting plate 31 through the ejection plate 362, driving the ejection block 365 to slide in the ejection groove 38, so that the end of the ejection block 365 away from the ejection shaft 363 is flush with the inner wall of the female mold groove 37, thereby performing injection molding on the closed cavity space; After the ejection mechanism 36 is used to demold the automobile injection molded part, it falls through the drop opening 7, so that the injection molded part contacts and rotates with the rotating roller 633, so that the rotating roller 633 performs a buffering work on the injection molded part when it falls. When the injection molded part falls through the two rotating rollers 633, when the injection molded part contacts and squeezes with the rotating roller 633, the slider 632 moves in the sliding groove 61, so that the slider 632 drives the moving frame 631 to move, and at the same time, the buffering work of the second spring 64 is performed. , so as to avoid the phenomenon that the rotating roller 633 will get stuck on the injection molded part when it is falling when the rotating roller 633 contacts the injection molded part, and the injection molded part continues to fall downward. By setting a connecting rod 634 and an auxiliary roller 635 on the side of the moving frame 631, the angle of the auxiliary roller 635 is greater than that of the rotating roller 633, so that when the plastic part continues to fall downward, the auxiliary roller 635 can guide the falling plastic part, so that the injection molded part can fall smoothly on the conveyor belt 54 for conveying and unloading; By turning on the third motor 53, the active roller 51 is driven to rotate through the output end of the third motor 53, so that the active roller 51 rotates under the drive of the output end of the third motor 53, and the power is transmitted between it and the conveyor belt 54 through friction. The conveyor belt 54 is usually annular and wrapped around a part of the surface of the active roller 51. When the active roller 51 rotates, due to the effect of friction, the conveyor belt 54 will start to move in the rotation direction of the active roller 51. The driven roller 52 mainly supports the conveyor belt 54 and changes the movement direction of the conveyor belt 54, so as to continuously transport and unload the plastic parts dropped on the conveyor belt 54.

[0017] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An injection molding mold for producing automobile plastic parts that is easy to demould, comprising: A workbench (1), wherein a male mold component (2) is fixedly connected to the top of the workbench (1), an injection molding component (4) is fixedly connected to a side of the top of the workbench (1) away from the male mold component (2), a conveying component (5) is rotatably connected to the inner cavity of the workbench (1), and buffer components (6) are fixedly connected to both sides of the inner cavity of the workbench (1), and the buffer components (6) are arranged above the conveying component (5); A female mold component (3), the female mold component (3) is used to perform molding and demoulding operations on automobile plastic parts, the bottom of the female mold component (3) is fixedly connected to the top of the workbench (1), the top of the workbench (1) is provided with a blanking opening (7), and the blanking opening (7) is provided between the male mold component (2) and the female mold component (3); The male mold component (2) comprises a mold clamping cylinder (21) and a male mold plate (24); the bottom of the mold clamping cylinder (21) is fixedly connected to the top of the workbench (1); the bottom of the male mold plate (24) is slidably connected to the top of the workbench (1); an output rod (23) is fixedly connected to the output end of the mold clamping cylinder (21); an end of the output rod (23) away from the mold clamping cylinder (21) is fixedly connected to the male mold plate (24); guide rods (22) are evenly arranged on the side of the mold clamping cylinder (21); the side of the guide rod (22) is slidably connected to the inner side of the mold clamping cylinder (21); the other end of the guide rod (22) is fixedly connected to the male mold plate (24); and an end of the male mold plate (24) away from the output rod (23) is fixedly connected to a male mold plate (25); The female mold component (3) comprises a connecting plate (31), a feeding hole (34) is provided in the middle of a side surface of the connecting plate (31), guide columns (32) are evenly arranged on the side surface of the connecting plate (31), the side surface of the guide columns (32) is fixedly connected to the inner side of the connecting plate (31), one end of the guide columns (32) away from the connecting plate (31) is fixedly connected to a female mold plate (33), a side of the female mold plate (33) close to the guide columns (32) is fixedly connected to an ejection mechanism (36), a side of the female mold plate (33) away from the guide columns (32) is fixedly connected to a connecting column (35), a side surface of the connecting column (35) is slidably connected to the inner side of a male mold plate (24), a female mold groove (37) is provided in the middle of a side of the female mold plate (33) away from the guide columns (32), and ejection grooves (38) are evenly provided on the side surface of the female mold groove (37).

2. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 1, characterized in that: The ejection mechanism (36) comprises an electric hydraulic rod (361), the electric hydraulic rod (361) being fixedly connected to a side of the connection plate (31) close to the concave mold plate (33), the output end of the electric hydraulic rod (361) being fixedly connected to an ejection plate (362), the other side of the ejection plate (362) being fixedly connected to an ejection shaft (363), the other end of the ejection shaft (363) being fixedly connected to a limiting block (364), and the inner side of the limiting block (364) being fixedly connected to an ejection block (365).

3. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 2, characterized in that: The bottom of the connecting plate (31) is fixedly connected to the top of the workbench (1), and the side of the ejection block (365) is slidably connected to the inner side of the ejection groove (38).

4. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 1, characterized in that: The injection molding component (4) comprises a fixed plate (41), the bottom of the fixed plate (41) is fixedly connected to the top of the workbench (1), the inner side of the fixed plate (41) is fixedly connected to an injection molding machine (42), the side of the injection molding machine (42) is fixedly connected to a first motor (43), the other side of the injection molding machine (42) is fixedly connected to the inner side of a feed hole (34), the inner side of the injection molding machine (42) is rotatably connected to a spiral blade (44), the output end of the first motor (43) is fixedly connected to one end of the spiral blade (44), and the side of the injection molding machine (42) is fixedly connected to a feeding mechanism (45).

5. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 4, characterized in that: The feeding mechanism (45) comprises a feeding shell (451), the side of the feeding shell (451) is fixedly connected to the inner side of the injection molding machine (42), the inner side of the feeding shell (451) is fixedly connected to a feeding plate (452), the inner side of the feeding plate (452) is arranged in an arc surface from high to low, the inner side of the feeding shell (451) is fixedly connected to a lower bracket (453), the inner side of the feeding shell (451) is located above the lower bracket (453) and is fixedly connected to an upper bracket (454), the upper bracket The bottom of the rotating shaft (454) is rotatably connected to a rotating shaft (455), the bottom of the rotating shaft (455) is rotatably connected to the top of the lower bracket (453), the bottom of the lower bracket (453) is fixedly connected to a second motor (456), the output end of the second motor (456) is fixedly connected to the bottom of the rotating shaft (455), a dispersing rod (457) is fixedly connected to the side of the rotating shaft (455), and a cleaning assembly (458) is fixedly connected to the side of the rotating shaft (455) away from the dispersing rod (457).

6. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 5, characterized in that: The cleaning assembly (458) comprises a cleaning rod (4581), the side surface of the cleaning rod (4581) being fixedly connected to the inner side of the rotating shaft (455), one end of the cleaning rod (4581) away from the rotating shaft (455) being slidably connected to a sliding rod (4582), the other end of the sliding rod (4582) being fixedly connected to a circular arc plate (4583), the side surface of the circular arc plate (4583) being fixedly connected to a scraper (4584), and a first spring (4585) being sleeved on the sliding rod (4582).

7. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 6, characterized in that: The side of the scraper (4584) away from the sliding rod (4582) contacts the inner wall of the feed housing (451), one end of the first spring (4585) is fixedly connected to the arc plate (4583), and the other end of the first spring (4585) is fixedly connected to the cleaning rod (4581).

8. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 1, characterized in that: The conveying component (5) comprises a driving roller (51), both ends of which are rotatably connected to the inner side of the workbench (1), driven rollers (52) are evenly arranged on the inner side of the workbench (1), both ends of which are rotatably connected to the inner side of the workbench (1), a third motor (53) is fixedly connected to the side of the workbench (1), the output end of the third motor (53) is fixedly connected to one end of the driving roller (51), and a conveyor belt (54) is sleeved on the side of the driving roller (51) and the driven roller (52).

9. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 1, characterized in that: The buffer component (6) comprises a sliding groove (61), the sliding groove (61) being evenly arranged at the top of the inner cavity of the workbench (1), a round rod (62) being fixedly connected to the inner side of the sliding groove (61), a moving mechanism (63) being slidably connected to the side of the round rod (62), and a second spring (64) being sleeved on the round rod (62).

10. The injection molding mold for producing automobile plastic parts that is easy to demould according to claim 9, characterized in that: The moving mechanism (63) comprises four moving frames (631), the top of each moving frame (631) is fixedly connected to a slider (632), the side of each slider (632) is slidably connected to the inner side of a sliding groove (61), the inner side of each slider (632) is slidably connected to the side of a round rod (62), one end of the second spring (64) is fixedly connected to the slider (632), the other end of the second spring (64) is fixedly connected to the inner wall of the sliding groove (61), the side surfaces of two moving frames (631) are rotatably connected to rotating rollers (633), the side surfaces of the moving frames (631) are fixedly connected to connecting rods (634), and the side surfaces of two connecting rods (634) are rotatably connected to auxiliary rollers (635).

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