A convenient forming machine for foamed plastic

Abstract

The application discloses a foamed plastic forming machine convenient for forming, relates to the foamed plastic forming technical field, and comprises a mounting frame. The foamed plastic forming machine convenient for forming is driven by a driving mechanism to rotate hollow auger blades and central auger blades, and the hollow auger blades are in a slow rotating state, and the central auger blades are in a fast rotating state. When the hollow auger blades rotate, the internal raw materials are forwarded, and with the increase of the raw materials, the raw materials are gradually extruded from injection molding nozzles. In the process, the raw materials exceeding the diameter of the hollow auger blades enter the central auger blade area. At this time, the central auger blades can accelerate the internal raw materials to be forwarded and extruded into the hollow auger blade area by fast rotating, so that the forwarding state of the foamed plastic raw materials is destroyed, the problem that the temperature of the internal raw materials is prone to being reduced to cause insufficient flowability after entering the mold is avoided, and the forming effect of the foamed plastic product is improved.

Description

Technical Field

[0001] This invention relates to the field of foam molding technology, specifically to a foam molding machine that facilitates molding. Background Technology

[0002] Foamed plastics are a type of polymer material formed by dispersing a large number of gas micropores in solid plastic. They are lightweight, heat-insulating, sound-absorbing, and shock-absorbing, and their dielectric properties are superior to those of the matrix resin. They have a wide range of applications, and almost all kinds of plastics can be made into foamed plastics. Foaming molding has become an important field in plastic processing. Among them, the most widely used is the packaging industry, such as plastic foam boxes and foam boards.

[0003] Existing foam molding machines mainly use a screw conveyor to extrude molten raw materials into the mold for cooling and molding. To prevent the raw materials from partially cooling due to low temperature inside the conveyor and affecting the wedge fit between the raw materials and the mold, a heating mechanism is usually added to the screw conveyor. However, during the conveying process of foam materials inside the screw conveyor, the outer material is closer to the screw conveyor, which can effectively prevent temperature drop. However, the material wrapped inside is difficult to be effectively heated, resulting in insufficient flowability of the material extruded into the foam mold, thus affecting the molding effect.

[0004] Therefore, we propose a foam molding machine that facilitates molding, in order to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a convenient foam molding machine to solve the problem mentioned in the background art: during the conveying of foam raw materials inside the screw conveyor, the outer material is close to the screw conveyor, which can effectively prevent temperature drop, but the material wrapped inside is difficult to be effectively heated, resulting in insufficient flow of the material extruded into the foam mold, thus affecting the molding effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a foam molding machine for easy molding, comprising a mounting frame, a first mounting platform fixedly connected to the top of the mounting frame near the rear side, a second mounting platform fixedly connected to the top of the mounting frame near the front side, a conveying mechanism for conveying raw materials provided on the top of the first mounting platform, a driving mechanism for driving the conveying mechanism provided on the rear side of the conveying mechanism, a positioning connecting mechanism provided on the top of the second mounting platform near the rear side, an outer mold mechanism provided on the top of the second mounting platform near the front side, and a molding and unloading mechanism provided on the top of the second mounting platform near the left side. The conveying mechanism includes a heating cylinder, a hollow auger blade rotatably disposed inside the heating cylinder near the outer side, a central auger blade rotatably disposed inside the heating cylinder located inside the hollow auger blade, and an injection nozzle fixedly connected to the front end of the heating cylinder.

[0007] Preferably, the top of the heating cylinder has an opening near the rear side, and slide rails are symmetrically connected to both sides of the opening on the top of the heating cylinder. A cover plate is slidably connected between the inner walls of the two slide rails. The bottom of the cover plate is in contact with the outer surface of the heating cylinder, and a hopper is fixedly connected to the top of the cover plate. A movable bracket is fixedly connected to the bottom of the heating cylinder. The movable bracket is slidably connected to the top of the first mounting platform and has cylinders on both sides. Both cylinders are fixedly installed on the top of the first mounting platform, and the telescopic ends of the cylinders are fixedly connected to the outer surface of the mounting bracket through a connecting plate.

[0008] Preferably, the driving mechanism includes a connecting bracket and a cylinder cover. The cylinder cover is fixedly connected to the rear end of the heating cylinder. The connecting bracket is fixedly connected to the rear surface of the movable bracket. A first motor is mounted on the rear surface of the connecting bracket. The output end of the first motor passes through the rear surface of the connecting bracket and extends to the front side. A second pulley is fixedly connected to the output end of the first motor. A transmission gear is rotatably connected to the front surface of the cylinder cover. The transmission gear and the second pulley are fixedly connected by a shaft.

[0009] Preferably, a first pulley is rotatably connected to the center of the rear surface of the cylinder cover, and a connector is rotatably connected to the center of the front surface of the cylinder cover. The connector and the first pulley are fixedly connected by a shaft. A transmission belt is connected between the first pulley and the second pulley. A toothed sleeve is meshed with the outer surface of the transmission gear. The toothed sleeve is rotatably connected to the inner wall of the heating cylinder through a bearing. The front surface of the connector is fixedly connected to the rear end of the central auger blade, and the front surface of the toothed sleeve is fixedly connected to the rear surface of the hollow auger blade.

[0010] Preferably, the connecting mechanism includes a hollow seat, which is fixedly connected to the top of the second mounting platform near the rear side. The hollow seat has a cooling channel inside, and two connecting pipes are installed on the top of the hollow seat, which are respectively connected to both ends of the cooling channel.

[0011] Preferably, a first through hole is provided at the center of the outer surface of the hollow seat, a connecting nozzle is fixedly connected to the rear surface of the hollow seat, the connecting nozzle and the first through hole are in communication, the connecting nozzle and the injection nozzle are in communication, and a first U-shaped sleeve is fixedly connected to the front surface of the hollow seat.

[0012] Preferably, the forming and feeding mechanism includes a limiting seat and an inner mold. The limiting seat is fixedly connected to the top of the second mounting platform near the left side. The inner mold is slidably inserted between the inner surface walls of the first U-shaped sleeve. A third through hole is provided at the center of the outer surface of the inner mold, and the third through hole and the first through hole are in a connected state.

[0013] Preferably, the outer mold mechanism includes a fixed frame, which is fixedly connected to the top of the second mounting platform near the front side. A hydraulic cylinder is mounted on the front surface of the fixed frame. The telescopic end of the hydraulic cylinder slides through the front surface of the fixed frame and extends to the rear side. An outer mold is fixedly connected to the telescopic end of the hydraulic cylinder, and the outer mold is slidably connected to the top of the second mounting platform.

[0014] Preferably, the rear surface of the outer mold is fixedly connected with positioning pins near the four corners, the front surface of the hollow seat is provided with second positioning holes near the four corners, the front surface of the first U-shaped sleeve is provided with first positioning holes near the four corners, and the front surface of the inner mold is provided with third positioning holes near the four corners. The positioning pins pass through the first positioning holes and the third positioning holes in sequence and are inserted into the interior of the second positioning holes.

[0015] Preferably, a second through hole is provided at the center of the outer surface of the limiting seat, a second U-shaped sleeve is fixedly connected to the front surface of the limiting seat, a second motor is installed on the left surface of the second U-shaped sleeve, a lead screw is rotatably connected between the inner surface walls of the second U-shaped sleeve and the first U-shaped sleeve on opposite sides, the output end of the second motor is fixedly connected to the left end of the lead screw, the outer surface thread of the lead screw penetrates the outer surface of the inner mold, a support frame is installed on the rear surface of the limiting seat, an air pump is installed on the top of the support frame, and the output end of the air pump is connected to the second through hole.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. A drive mechanism is set up to drive the hollow auger blade and the central auger blade to rotate. The hollow auger blade rotates slowly, while the central auger blade rotates rapidly. When the hollow auger blade rotates, it conveys the internal material forward. As the material increases, it is gradually extruded from the injection nozzle. During this process, material exceeding the diameter of the hollow auger blade will enter the central auger blade area. At this time, the central auger blade can accelerate the forward conveying of the inner material by rotating rapidly and squeeze it into the hollow auger blade area. This disrupts the conveying state of the foam material and avoids the problem of insufficient fluidity of the inner material after entering the mold due to the easy drop in temperature, thus improving the molding effect of the foam product.

[0018] 2. Start the second motor to drive the lead screw to rotate. When the lead screw rotates, it will drive the inner mold to move to the left, thus gradually moving from the first U-shaped sleeve to the inside of the second U-shaped sleeve. Then, start the air pump on the back of the limit seat. The air pump will compress the air and spray it out. The compressed air will blow the molded foam product in the inner mold through the second and third through holes and fall into the collection device on the front. Then, the inner mold can be sent back to the first U-shaped sleeve by the second motor and the lead screw. This design structure is novel and achieves the effect of rapid demolding by cooperating with air pressure and the original injection hole of the mold.

[0019] 3. When the outer mold is pushed by the hydraulic cylinder to complete the mold closing with the inner mold, the positioning pins on its surface will pass through the first positioning hole on the surface of the first U-shaped sleeve and the third positioning hole on the surface of the inner mold in sequence, and then be inserted into the second positioning hole on the surface of the hollow seat. This plays a guiding role when the outer mold and the inner mold are closed, thereby improving the mold closing accuracy and ensuring the molding quality of the foamed product. Attached Figure Description

[0020] Figure 1 This is a perspective view of a foam molding machine for easy molding according to the present invention;

[0021] Figure 2 This is another perspective view of a foam molding machine for easy molding according to the present invention;

[0022] Figure 3 This is a top view of a foam molding machine that facilitates molding according to the present invention;

[0023] Figure 4 This is a schematic diagram of the mounting frame structure of a foam molding machine for easy molding according to the present invention;

[0024] Figure 5 This is a partial structural schematic diagram of a foam molding machine for easy molding according to the present invention;

[0025] Figure 6 This is a schematic diagram of the conveying mechanism structure of a foam molding machine that facilitates molding, according to the present invention.

[0026] Figure 7 This is a schematic diagram of the drive mechanism structure of a foam molding machine that facilitates molding, according to the present invention.

[0027] Figure 8 This is a schematic diagram of the connection mechanism structure of a foam molding machine that facilitates molding according to the present invention;

[0028] Figure 9 This is a schematic diagram of the outer mold mechanism of a foam molding machine for easy molding according to the present invention;

[0029] Figure 10 This is a schematic diagram of the molding and feeding mechanism of a foam molding machine that facilitates molding, according to the present invention.

[0030] In the picture:

[0031] 1. Mounting frame; 11. First mounting platform; 12. Second mounting platform; 2. Conveying mechanism; 201. Movable support; 202. Heating cylinder; 203. Injection nozzle; 204. Connecting plate; 205. Cylinder; 206. Opening; 207. Slide rail; 208. Cover plate; 209. Injection hopper; 210. Hollow auger blade; 211. Central auger blade; 3. Drive mechanism; 301. Connecting support; 302. Cylinder cover; 303. First motor; 304. Connector; 305. First pulley; 306. Second pulley; 307. Transmission belt; 308. Transmission gear; 309. Gear sleeve; 4. Connecting mechanism 401. Hollow seat; 402. First through hole; 403. Connecting nozzle; 404. Cooling channel; 405. Connecting pipe; 406. First U-shaped sleeve; 407. First positioning hole; 408. Second positioning hole; 5. Outer mold mechanism; 501. Fixing frame; 502. Hydraulic cylinder; 503. Outer mold; 504. Positioning post; 6. Forming and unloading mechanism; 601. Limiting seat; 602. Second through hole; 603. Support frame; 604. Air pump; 605. Second motor; 606. Lead screw; 607. Inner mold; 608. Third through hole; 609. Third positioning hole; 610. Second U-shaped sleeve. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-10This invention provides a technical solution: a foam molding machine for easy molding, comprising a mounting frame 1, a first mounting platform 11 fixedly connected to the top of the mounting frame 1 near the rear side, a second mounting platform 12 fixedly connected to the top of the mounting frame 1 near the front side, a conveying mechanism 2 for conveying raw materials being provided on the top of the first mounting platform 11, a driving mechanism 3 for driving the conveying mechanism 2 being provided on the rear side of the conveying mechanism 2, a positioning connecting mechanism 4 being provided on the top of the second mounting platform 12 near the rear side, an outer mold mechanism 5 being provided on the top of the second mounting platform 12 near the front side, and a molding and unloading mechanism 6 for unloading being provided on the top of the second mounting platform 12 near the left side. The conveying mechanism 2 includes a heating cylinder 202, a hollow auger blade 210 rotatably disposed inside the heating cylinder 202 near the outer side, and the heating cylinder 202 rotating inside the hollow auger blade 210. The heating cylinder 202 is equipped with a central auger blade 211, and the front end of the heating cylinder 202 is fixedly connected to an injection nozzle 203. When the hollow auger blade 210 rotates, it will convey the internal material forward. As the material increases, it will be gradually squeezed out from the injection nozzle 203. During the process, the material exceeding the diameter of the hollow auger blade 210 will enter the central auger blade 211 area. At this time, the central auger blade 211 can accelerate the material on the inside forward by rotating rapidly and squeeze it into the hollow auger blade 210 area, thereby disrupting the conveying state of the foam material and avoiding the problem that the temperature of the material on the inside is easily reduced, resulting in insufficient fluidity after entering the mold. This improves the molding effect of the foam product. The heating cylinder 202 has a jacket inside, and a high-resistance heating wire is surrounded inside the jacket. When the high-resistance heating wire is energized, it can convert electrical energy into heat energy, thereby increasing the temperature of the heating cylinder 202 and heating the material.

[0034] like Figures 1-3 , Figure 5 and Figure 6As shown, an opening 206 is provided on the top of the heating cylinder 202 near the rear side. Slide rails 207 are symmetrically connected to the top of the heating cylinder 202 on both sides of the opening 206. A cover plate 208 is slidably connected between the inner walls of the two slide rails 207. The bottom of the cover plate 208 is in contact with the outer surface of the heating cylinder 202. A hopper 209 is fixedly connected to the top of the cover plate 208. A movable bracket 201 is fixedly connected to the bottom of the heating cylinder 202. The movable bracket 201 is slidably connected to the top of the first mounting platform 11, and cylinders 205 are provided on both sides. Both cylinders 205 are fixedly installed on the top of the first mounting platform 11. The telescopic ends of the cylinders 205 are fixedly connected to the outer surface of the mounting bracket 1 through a connecting plate 204. During use, the device receives material through the hopper 209. The pre-treated foamed material is taken and enters the heating cylinder 202 through the opening 206. By activating the two cylinders 205 in conjunction with the connecting plate 204, the heating cylinder 202 can be pushed to the rear, thereby disengaging the injection nozzle 203 and the connecting nozzle 403. At this time, the cover plate 208 can move within a certain range above the opening 206 under the action of the slide rail 207, thus preventing the opening 206 from being exposed to the outside. After the relative movement of the cover plate 208 and the heating cylinder 202, it will not affect the connection between the injection hopper 209 and the heating cylinder 202. Therefore, when the heating cylinder 202 is removed to unclog and maintain the injection nozzle 203 and the connecting nozzle 403, it is not necessary to disconnect the connection between the injection hopper 209 and the raw material supply equipment, which improves the convenience of the device.

[0035] like Figures 1-3 , Figure 5 and Figure 7 As shown, the drive mechanism 3 includes a connecting bracket 301 and a cylinder cover 302. The cylinder cover 302 is fixedly connected to the rear end of the heating cylinder 202. The connecting bracket 301 is fixedly connected to the rear surface of the movable bracket 201. A first motor 303 is mounted on the rear surface of the connecting bracket 301. The output end of the first motor 303 passes through the rear surface of the connecting bracket 301 and extends to the front side. A second pulley 306 is fixedly connected to the output end of the first motor 303. A transmission gear 308 is rotatably connected to the front surface of the cylinder cover 302. The transmission gear 308 and the second pulley 306 are fixedly connected by a shaft. The connecting bracket 301 is mainly used to connect the drive mechanism 3 and the movable bracket 201 so that the two can move synchronously.

[0036] like Figures 1-3 , Figure 5 and Figure 7As shown, a first pulley 305 is rotatably connected to the center of the rear surface of the cylinder cover 302, and a connector 304 is rotatably connected to the center of the front surface of the cylinder cover 302. The connector 304 and the first pulley 305 are fixedly connected by a shaft. A transmission belt 307 is drivingly connected between the first pulley 305 and the second pulley 306. A gear sleeve 309 is meshed with the outer surface of the transmission gear 308. The gear sleeve 309 is rotatably connected to the inner wall of the heating cylinder 202 through a bearing. The front surface of the connector 304 is fixedly connected to the rear end of the central auger blade 211. The front surface of sleeve 309 and the rear surface of hollow auger blade 210 are fixedly connected. By starting the first motor 303, the second pulley 306 is driven to rotate. At this time, the second pulley 306 will drive the first pulley 305 to rotate faster through the transmission belt 307. At the same time, the second pulley 306 will drive the transmission gear 308 to rotate synchronously. At this time, the transmission gear 308 will drive the toothed sleeve 309 to rotate slowly, thereby causing the central auger blade 211 connected to the connector 304 to rotate rapidly, and the hollow auger blade 210 connected to the toothed sleeve 309 to rotate slowly.

[0037] like Figures 1-3 and Figure 8 As shown, the connecting mechanism 4 includes a hollow seat 401, which is fixedly connected to the top of the second mounting platform 12 near the rear side. A cooling channel 404 is provided inside the hollow seat 401. Two connecting pipes 405 are installed on the top of the hollow seat 401, and the two connecting pipes 405 are respectively connected to the two ends of the cooling channel 404. After the foamed product is formed in the molding cavity between the inner mold 607 and the outer mold 503, the coolant can be injected into one of the connecting pipes 405 through an external circulating pump and cooling box and then enter the cooling channel 404. At this time, the coolant in the cooling channel 404 will absorb the heat of the hollow seat 401 and the inner mold 607 through heat exchange, thereby making the foamed product cool down quickly.

[0038] like Figures 1-3 and Figure 8 As shown, a first through hole 402 is provided at the center of the outer surface of the hollow base 401. A connecting nozzle 403 is fixedly connected to the rear surface of the hollow base 401. The connecting nozzle 403 and the first through hole 402 are in a connected state. The connecting nozzle 403 and the injection nozzle 203 are in a connected state. A first U-shaped sleeve 406 is fixedly connected to the front surface of the hollow base 401. After the foam plastic material is extruded from the injection nozzle 203, it will enter the molding cavity composed of the inner mold 607 and the outer mold 503 through the connecting nozzle 403, the first through hole 402 and the third through hole 608 to complete the foam plastic molding.

[0039] like Figures 1-3 and Figure 10As shown, the molding and feeding mechanism 6 includes a limiting seat 601 and an inner mold 607. The limiting seat 601 is fixedly connected to the top of the second mounting platform 12 near the left side. The inner mold 607 is slidably inserted between the inner surface walls of the first U-shaped sleeve 406. A third through hole 608 is provided at the center of the outer surface of the inner mold 607. The third through hole 608 and the first through hole 402 are in a connected state. The limiting seat 601 is mainly used to limit the inner mold 607 in conjunction with the second U-shaped sleeve 610. The third through hole 608 is the original injection hole of the inner mold 607. After connecting with the first through hole 402, the raw material can enter the inner mold 607. After connecting with the second through hole 602, the gas can enter the inner mold 607.

[0040] like Figures 1-3 and Figure 9 As shown, the outer mold mechanism 5 includes a fixed frame 501, which is fixedly connected to the top of the second mounting platform 12 near the front side. A hydraulic cylinder 502 is installed on the front surface of the fixed frame 501. The telescopic end of the hydraulic cylinder 502 slides through the front surface of the fixed frame 501 and extends to the rear side. An outer mold 503 is fixedly connected to the telescopic end of the hydraulic cylinder 502. The outer mold 503 is slidably connected to the top of the second mounting platform 12. After the foamed product cools and forms, the outer mold 503 can be moved forward by starting the hydraulic cylinder 502 to separate from the inner mold 607 and complete the mold separation.

[0041] like Figures 1-3 and Figure 9 As shown, positioning pins 504 are fixedly connected to the rear surface of the outer mold 503 near the four corners. Second positioning holes 408 are provided on the front surface of the hollow base 401 near the four corners. First positioning holes 407 are provided on the front surface of the first U-shaped sleeve 406 near the four corners. Third positioning holes 609 are provided on the front surface of the inner mold 607 near the four corners. The positioning pins 504 pass through the first positioning holes 407 and the third positioning holes 609 in sequence and are inserted into the second positioning holes 408. When the outer mold 503 and the inner mold 607 are closed under the push of the hydraulic cylinder 502, the positioning pins 504 on its surface pass through the first positioning holes 407 on the surface of the first U-shaped sleeve 406 and the third positioning holes 609 on the surface of the inner mold 607 in sequence, and then insert into the second positioning holes 408 on the surface of the hollow base 401. This serves to guide the outer mold 503 and the inner mold 607 during mold closing, thereby improving the accuracy of mold closing and ensuring the molding quality of the foamed product.

[0042] like Figures 1-3 and Figure 10As shown, a second through hole 602 is provided at the center of the outer surface of the limiting seat 601. A second U-shaped sleeve 610 is fixedly connected to the front surface of the limiting seat 601. A second motor 605 is installed on the left surface of the second U-shaped sleeve 610. A lead screw 606 is rotatably connected between the inner surface walls of the second U-shaped sleeve 610 and the first U-shaped sleeve 406. The output end of the second motor 605 is fixedly connected to the left end of the lead screw 606. The thread on the outer surface of the lead screw 606 penetrates the outer surface of the inner mold 607. A support frame 603 is installed on the rear surface of the limiting seat 601. An air pump 604 is installed on the top of the support frame 603. The output end of the air pump 604 is connected to the second through hole 602. When the second motor 605 is started, the second motor 605 is connected to the second through hole 602. 05 drives the lead screw 606 to rotate. When the lead screw 606 rotates, it will drive the inner mold 607 to move to the left, thus gradually moving from the first U-shaped sleeve 406 to the inside of the second U-shaped sleeve 610. Then, the air pump 604 on the back of the limit seat 601 is activated. The air pump 604 will compress the air and spray it out. The sprayed compressed gas will blow the foamed product formed in the inner mold 607 through the second through hole 602 and the third through hole 608 and fall into the collection device on the front. Then, the inner mold 607 can be sent back to the first U-shaped sleeve 406 by the second motor 605 and the lead screw 606. This design structure is novel and achieves the effect of rapid demolding by using air pressure and the original injection hole of the mold.

[0043] The device's operation and working principle are as follows: During operation, the pre-treated foamed plastic material is received through the injection hopper 209. This material then enters the heating cylinder 202 through the opening 206. Subsequently, the first motor 303 drives the second pulley 306 to rotate. The second pulley 306, via the transmission belt 307, accelerates the rotation of the first pulley 305. Simultaneously, the second pulley 306 drives the transmission gear 308 to rotate synchronously. The transmission gear 308 then drives the gear sleeve 309 to rotate slowly, causing the central auger blade 211, connected to the connector 304, to rotate rapidly, while the hollow auger blade 210, connected to the gear sleeve 309, rotates slowly. As the hollow auger blade 210 rotates, it conveys the internal material forward. As the raw material increases, it is gradually extruded from the injection nozzle 203. During this process, raw material exceeding the diameter of the hollow auger blade 210 enters the central auger blade 211 area. At this time, the central auger blade 211 rotates rapidly to accelerate the inner raw material forward and squeeze it into the hollow auger blade 210 area, thereby disrupting the conveying state of the foam material. This avoids the problem of insufficient flowability of the inner raw material after entering the mold due to its easily decreasing temperature, thus improving the molding effect of the foam product. After the foam material is extruded from the injection nozzle 203, it enters the molding cavity composed of the inner mold 607 and the outer mold 503 through the connecting nozzle 403, the first through hole 402, and the third through hole 608 to complete the foam molding. The foam product is formed in the inner mold 607 and the outer mold 503. After the molding cavity between points 3 is formed, coolant can be injected into one of the connecting pipes 405 via an external circulating pump and cooling tank, and then enters the cooling channel 404. At this time, the coolant in the cooling channel 404 will absorb the heat of the hollow seat 401 and the inner mold 607 through heat exchange, thereby rapidly cooling the foamed product. Then, the second motor 605 is started to drive the lead screw 606 to rotate. When the lead screw 606 rotates, it will drive the inner mold 607 to move to the left, thus gradually moving from the first U-shaped insert 406 to the inside of the second U-shaped insert 610. Then, the air pump 604 on the back of the limiting seat 601 is started. The air pump 604 will compress the air and spray it out. The sprayed compressed gas will pass through the second through hole 602 and the third through hole 608 to cool the inner mold 607. The foamed product formed in mold 607 is blown out and falls into the collection device at the front. Then, the inner mold 607 is sent back into the first U-shaped sleeve 406 by the second motor 605 and the lead screw 606. This novel design achieves rapid demolding by utilizing air pressure and the original injection holes of the mold. When the outer mold 503 is pushed by the hydraulic cylinder 502 to close with the inner mold 607, the positioning pins 504 on its surface pass through the first positioning hole 407 on the surface of the first U-shaped sleeve 406 and the third positioning hole 609 on the surface of the inner mold 607, and then insert into the second positioning hole 408 on the surface of the hollow seat 401. This guides the outer mold 503 and the inner mold 607 during mold closing, thereby improving the accuracy of mold closing.This ensured the molding quality of the foamed products.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foam molding machine for easy molding, comprising a mounting frame (1), wherein a first mounting platform (11) is fixedly connected to the top of the mounting frame (1) near the rear side, and a second mounting platform (12) is fixedly connected to the top of the mounting frame (1) near the front side, characterized in that: The first mounting platform (11) is provided with a conveying mechanism (2) for conveying raw materials at its top. The rear side of the conveying mechanism (2) is provided with a driving mechanism (3) for driving the conveying mechanism (2). The second mounting platform (12) is provided with a positioning connecting mechanism (4) near the rear side at its top. The second mounting platform (12) is provided with an outer mold mechanism (5) near the front side at its top. The second mounting platform (12) is provided with a forming and unloading mechanism (6) near the left side at its top. The conveying mechanism (2) includes a heating cylinder (202), a hollow auger blade (210) is rotatably arranged inside the heating cylinder (202) near the outer side, a central auger blade (211) is rotatably arranged inside the heating cylinder (202) at the inner side of the hollow auger blade (210), and an injection nozzle (203) is fixedly connected to the front end of the heating cylinder (202). The drive mechanism (3) includes a connecting bracket (301) and a cylinder cover (302). The cylinder cover (302) is fixedly connected to the rear end of the heating cylinder (202). The connecting bracket (301) is fixedly connected to the rear surface of the movable bracket (201). A first motor (303) is mounted on the rear surface of the connecting bracket (301). The output end of the first motor (303) passes through the rear surface of the connecting bracket (301) and extends to the front side. A second pulley (306) is fixedly connected to the output end of the first motor (303). A transmission gear (308) is rotatably connected to the front surface of the cylinder cover (302). The transmission gear (308) and the second pulley (306) are fixedly connected by a shaft. A first pulley (305) is rotatably connected to the center of the rear surface of the cylinder cover (302), and a connector (304) is rotatably connected to the center of the front surface of the cylinder cover (302). The connector (304) and the first pulley (305) are fixedly connected by a shaft. A transmission belt (307) is connected between the first pulley (305) and the second pulley (306). A gear sleeve (309) is meshed with the outer surface of the transmission gear (308). The gear sleeve (309) is rotatably connected to the inner wall of the heating cylinder (202) through a bearing. The front surface of the connector (304) is fixedly connected to the rear end of the central auger blade (211). The front surface of the gear sleeve (309) is fixedly connected to the rear surface of the hollow auger blade (210). The connecting mechanism (4) includes a hollow seat (401), which is fixedly connected to the top of the second mounting platform (12) near the rear side. A cooling channel (404) is provided inside the hollow seat (401), and two connecting pipes (405) are installed on the top of the hollow seat (401). The two connecting pipes (405) are respectively connected to the two ends of the cooling channel (404). A first through hole (402) is provided at the center of the outer surface of the hollow base (401). A connecting nozzle (403) is fixedly connected to the rear surface of the hollow base (401). The connecting nozzle (403) and the first through hole (402) are in a communication state. The connecting nozzle (403) and the injection nozzle (203) are in a communication state. A first U-shaped sleeve (406) is fixedly connected to the front surface of the hollow base (401). The forming and feeding mechanism (6) includes a limiting seat (601) and an inner mold (607). The limiting seat (601) is fixedly connected to the top of the second mounting platform (12) near the left side. The inner mold (607) is slidably inserted between the inner walls of the first U-shaped sleeve (406). A third through hole (608) is provided at the center of the outer surface of the inner mold (607). The third through hole (608) and the first through hole (402) are in a connected state. A second through hole (602) is provided at the center of the outer surface of the limiting seat (601). A second U-shaped sleeve (610) is fixedly connected to the front surface of the limiting seat (601). A second motor (605) is installed on the left surface of the second U-shaped sleeve (610). A lead screw (606) is rotatably connected between the inner walls of the opposite sides of the second U-shaped sleeve (610) and the first U-shaped sleeve (406). The output end of the second motor (605) is fixedly connected to the left end of the lead screw (606). The thread on the outer surface of the lead screw (606) penetrates the outer surface of the inner mold (607). A support frame (603) is installed on the rear surface of the limiting seat (601). An air pump (604) is installed on the top of the support frame (603). The output end of the air pump (604) is connected to the second through hole (602).

2. The foam molding machine for easy molding according to claim 1, characterized in that: An opening (206) is provided at the top of the heating cylinder (202) near the rear side. Slide rails (207) are symmetrically connected to the top of the heating cylinder (202) on both sides of the opening (206). A cover plate (208) is slidably connected between the inner walls of the two slide rails (207). The bottom of the cover plate (208) is in contact with the outer surface of the heating cylinder (202). A hopper (209) is fixedly connected to the top of the cover plate (208). A movable bracket (201) is fixedly connected to the bottom of the heating cylinder (202). The movable bracket (201) is slidably connected to the top of the first mounting platform (11) and cylinders (205) are provided on both sides. Both cylinders (205) are fixedly installed on the top of the first mounting platform (11). The telescopic ends of the cylinders (205) are fixedly connected to the outer surface of the mounting bracket (1) through the connecting plate (204).

3. The foam molding machine for easy molding according to claim 2, characterized in that: The outer mold mechanism (5) includes a fixed frame (501), which is fixedly connected to the top of the second mounting platform (12) near the front side. A hydraulic cylinder (502) is installed on the front surface of the fixed frame (501). The telescopic end of the hydraulic cylinder (502) slides through the front surface of the fixed frame (501) and extends to the rear side. An outer mold (503) is fixedly connected to the telescopic end of the hydraulic cylinder (502). The outer mold (503) is slidably connected to the top of the second mounting platform (12).

4. The foam molding machine for easy molding according to claim 3, characterized in that: The outer mold (503) has positioning pins (504) fixedly connected to the four corners of the rear surface. The hollow base (401) has second positioning holes (408) at the four corners of the front surface. The first U-shaped sleeve (406) has first positioning holes (407) at the four corners of the front surface. The inner mold (607) has third positioning holes (609) at the four corners of the front surface. The positioning pins (504) pass through the first positioning hole (407) and the third positioning hole (609) in sequence and are inserted into the interior of the second positioning hole (408).

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