Plastic product forming device and forming method

Abstract

The invention belongs to the technical field of injection molding, and particularly relates to a plastic product forming device which comprises an injection molding machine body provided with a first cavity and a second cavity, and further comprises a mold comprising a first mold base, a second mold base and a movable mold base, and the movable mold base is provided with a forming cavity; the mold opening and closing parts are respectively arranged in the first cavity and the second cavity; the ejector is arranged in the first cavity; the portal frame is provided with a rack and a lifting mechanism; the release agent spraying component is connected with the lower side of the rack, and the release agent spraying component comprises a release agent bottle, a pneumatic pressing head and a surrounding driving mechanism; the material taking mechanism is connected with the lower side of the rack; according to the mold release agent spraying device, through the design of the mold release agent spraying component, when the pneumatic pressing head presses the mold release agent bottle to spray out the mold release agent, the mold release agent bottle can conduct circumferential surrounding spraying, and therefore the mold release agent can be evenly sprayed in a large range.

Description

Technical Field

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

[0002] When molding plastic products, the existing means mostly use injection molding machines to mold plastics. A horizontal injection molding machine is a relatively common device for injection molding plastic products. The mold is divided into two parts and is respectively arranged on both sides of the injection molding machine body. The mold is opened and closed by a driving device. At the same time, the existing injection molding machine also integrates the functional mechanism of material removal and release agent spraying, and performs material removal and release agent spraying operations after the mold is opened.

[0003] However, when spraying the release agent, a simple method of pressing the nozzle of the release agent bottle is often used for spraying. The spraying range is limited and only molds with small molding cavities can be sprayed. If the molding cavity of the mold is large, the sprayed release agent can only cover a small area of the molding cavity, resulting in uneven spraying of the release agent. Uneven spraying of the release agent will have an adverse effect on the injection molding operation. For this reason, we propose a plastic product molding device and a molding method. Summary of the Invention

[0004] The purpose of the present invention is to provide a plastic product forming device and a forming method to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows: A plastic product molding device includes an injection molding machine body, wherein a first chamber and a second chamber are respectively provided on both sides of the injection molding machine body, and the first chamber and the second chamber are connected by a connecting frame, and further includes: A mold, comprising a first mold base, a second mold base, and a movable mold base, wherein the first mold base is located in the first cavity, the second mold base is located in the second cavity, the movable mold base is movably connected to the first mold base via an elastic connection mechanism, and the movable mold base defines a molding cavity; A mold opening and closing component, wherein the mold opening and closing component is respectively arranged in the first cavity and the second cavity, and the mold opening and closing component is used to control the opening and closing of the mold between the first mold base and the second mold base; An ejector, the ejector being disposed in the first cavity and being used to eject the movable mold base after mold opening; A gantry, the gantry being located outside the second chamber, the gantry being provided with a frame and a lifting mechanism, the lower side of the lifting mechanism being fixedly connected to the frame; A release agent spraying component connected to the lower side of the frame, comprising a release agent bottle, a pneumatic pressing head, and a surrounding drive mechanism, wherein the surrounding drive mechanism is used to drive the release agent bottle to perform circumferential spraying; A material taking mechanism is fixedly connected to the lower side of the frame and is located below the release agent spraying component. The material taking mechanism is used to take out the plastic product in the molding cavity.

[0006] As a further explanation of the technical solution of the present invention: The lifting mechanism includes: a mounting platform, the mounting platform is connected to the top of the gantry, and vertical positioning strips are processed on both sides of the mounting platform; a first motor, the first motor being fixedly mounted on the mounting platform; a transmission screw, the transmission screw being fixedly connected to the output end of the first motor and extending upward; A U-shaped frame, wherein the opening side of the U-shaped frame faces downward and both sides of the U-shaped frame are made of C-shaped steel that slides and matches the vertical positioning bar. The upper end of the transmission screw passes through the top of the U-shaped frame and is threadedly connected to the top of the U-shaped frame. The bottoms of both sides of the U-shaped frame are fixedly connected to the frame.

[0007] As a further explanation of the technical solution of the present invention: Vertical positioning rods are also provided on both sides of the frame, and the surrounding drive mechanism includes: A slide rail, wherein both ends of the slide rail are slidably connected to the vertical positioning rods on both sides, and the slide rail is also slidably connected to a slide beam; A mounting plate is mounted and fixed between the mounting plate and the sliding beam, a plurality of first mounting screw holes are provided on the upper and lower sides of the mounting plate, the pneumatic pressing head is fixed to the upper side of the mounting plate with bolts, the release agent bottle is fixed to the lower side of the mounting plate with bolts, and the pneumatic pressing head corresponds to the nozzle of the release agent bottle, and the bottom of the mounting plate is also rotatably connected to a rotating shaft; A vertical adjustment frame, wherein the vertical adjustment frame is rotatably connected to a vertical screw, and an end of the rotating shaft extends into the vertical adjustment frame and is provided with a screw hole threadedly connected to the vertical screw; A fixing frame is fixedly connected to the frame, and a second motor is installed on the fixing frame, and an output shaft of the second motor is fixedly connected to the lower end of the vertical adjustment frame.

[0008] As a further explanation of the technical solution of the present invention: The material taking mechanism comprises: A suction cup frame, the suction cup frame is fixed to the bottom of the frame, and the suction cup frame is provided with a plurality of second mounting screw holes; A pneumatic suction cup is fixed to the suction cup frame by bolts.

[0009] As a further explanation of the technical solution of the present invention: A sliding cavity is provided inside the first mold base, and a sliding block matching the sliding cavity is provided on the movable mold base; The elastic connection mechanism comprises: Two push blocks, the two push blocks are fixedly connected to two sides of the slider respectively; Two groups of springs, the two push blocks are elastically connected and fixed to the inner wall of the sliding cavity respectively through the two groups of springs.

[0010] As a further explanation of the technical solution of the present invention: The mold opening and closing components include: Two groups of hydraulic rods, the two groups of hydraulic rods are respectively fixed to the inner wall of the first chamber and the inner wall of the second chamber, the telescopic end of one group of hydraulic rods is fixedly connected to the first mold base, and the telescopic end of the other group of hydraulic rods is fixedly connected to the second mold base; Two hydraulic pumps are installed in the first chamber and the second chamber respectively, and are used to drive the extension and retraction of the two groups of hydraulic rods respectively.

[0011] As a further explanation of the technical solution of the present invention: The ejector comprises: Two electric push rods are fixedly connected to the inner wall of the first chamber, and the telescopic ends of the two electric push rods respectively correspond to the two push blocks but are not connected.

[0012] The molding device of the present invention also includes a molding method, comprising the following steps: S1: The mold opening and closing parts are in the mold opening state, and the ejector does not work at this time; S2: The gantry's lifting mechanism lowers the frame so that the release agent spraying component is aligned with the molding cavity of the movable mold base. Then, the release agent bottle is rotated circumferentially by the surrounding drive mechanism to evenly spray the release agent into the molding cavity. S3: The frame is raised to the highest position through the lifting mechanism of the gantry, the mold and die parts are opened and closed, the ejector does not work, the injection molding material is injected into the molding cavity of the movable mold base, and the plastic material in the molding cavity is cooled and formed; S4: The mold opening and closing parts are opened, the ejector does not work, and the gantry lifting mechanism lowers the frame so that the material taking mechanism corresponds to the molding cavity of the movable mold base; S5: The ejector works to push the movable mold base out, and the plastic product is taken out from the molding cavity of the movable mold base through the material taking mechanism. Then the ejector works to drive the movable mold base back to its original position. S6: The gantry's lifting mechanism continues to lower the frame so that the release agent spraying component is aligned with the molding cavity of the movable mold base. The release agent bottle is then rotated circumferentially by the surrounding drive mechanism to evenly spray the release agent into the molding cavity. At the same time, the material removal mechanism located below releases and collects the plastic product. S7: The lifting mechanism of the gantry raises the frame to the highest position, so that the release agent spraying parts and the material taking mechanism are in a high position; S8: Repeat steps S3 to S7 to perform continuous plastic product molding operations.

[0013] The present invention designs a release agent spraying component and utilizes a surrounding drive mechanism so that when a pneumatic pressing head presses a release agent bottle to spray the release agent, the release agent bottle can perform circumferential spraying, thereby spraying the release agent over a large range and evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further illustrated by means of the following non-limiting examples.

[0015] Figure 1 The structure diagram of the gantry, lifting mechanism, release agent spraying component and material taking mechanism of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure diagram of the gantry, lifting mechanism, release agent spraying component and material taking mechanism of the present invention is shown in FIG. Figure 2 ; Figure 3 for Figure 2 A magnified schematic diagram of the structure at A; Figure 4 This is a schematic diagram of the structure of the present invention when the U-shaped frame is raised to the highest position. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the present invention when the U-shaped frame is raised to the highest position. Figure 2 ; Figure 6 This is a schematic structural diagram of the present invention when the U-shaped frame is lowered to the lowest position; Figure 7 It is a structural schematic diagram of the mold, mold opening and closing components and ejector of the present invention; Figure 8 This is a schematic diagram of the structure of the present invention during mold opening, material removal, and spraying of a release agent; Figure 9 Schematic diagram of the structure of the surround drive mechanism of the present invention in two adjustment states; The main component symbols are described as follows: Injection molding machine body 1, first chamber 11, second chamber 12, connecting frame 13; Mold 2, first mold base 21, sliding cavity 211, second mold base 22, movable mold base 23, slider 231, push block 232, spring 233; Mould opening and closing components 3, hydraulic rod 31, hydraulic pump 32; ejector 4; Gantry 5, frame 51, vertical positioning rod 511, lifting mechanism 52, mounting platform 521, vertical positioning bar 5211, first motor 522, transmission screw 523, U-shaped frame 524; Release agent spraying component 6, release agent bottle 61, pneumatic pressing head 62, slide rail 63, slide beam 631, mounting plate 64, rotating shaft 641, vertical adjustment frame 65, vertical screw 651, fixing frame 66, second motor 661; Material taking mechanism 7, suction cup frame 71, pneumatic suction cup 72. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0017] Example: See also Figures 1 to 9 A plastic product molding device includes an injection molding machine body 1, a first chamber 11 and a second chamber 12 are respectively provided on both sides of the injection molding machine body 1, and the first chamber 11 and the second chamber 12 are connected by a connecting frame 13, and further includes: The mold 2 includes a first mold base 21, a second mold base 22, and a movable mold base 23. The first mold base 21 is located in the first cavity 11, and the second mold base 22 is located in the second cavity 12. The movable mold base 23 is movably connected to the first mold base 21 by an elastic connection mechanism. The movable mold base 23 defines a molding cavity. The elastic connection mechanism can connect the movable mold base 23 to the first mold base 21 and tightly adhere the movable mold base 23 to the first mold base 21 through elastic force. When the mold is closed, the first mold base 21 and the second mold base 22 are closed to close the molding cavity of the movable mold base 23. After the injection molding material is injected into the molding cavity, the injection molding operation can be carried out. The mold opening and closing components 3 are respectively arranged in the first cavity 11 and the second cavity 12, and are used to control the opening and closing of the mold between the first mold base 21 and the second mold base 22; The ejector 4 is disposed in the first cavity 11 and is used to eject the movable mold base 23 after the mold is opened. When the mold is opened, the first mold base 21 and the second mold base 22 are separated. The function of the ejector 4 is to eject the movable mold base 23 after the mold is opened. The gantry 5 is located outside the second chamber 12. The gantry 5 is provided with a frame 51 and a lifting mechanism 52. The lower side of the lifting mechanism 52 is fixedly connected to the frame 51. The release agent spraying component 6 is connected to the lower side of the frame 51 and includes a release agent bottle 61, a pneumatic pressing head 62, and a surrounding drive mechanism. The surrounding drive mechanism is used to drive the release agent bottle 61 to perform circumferential spraying. When spraying the release agent, the pneumatic pressing head 62 can press the nozzle of the release agent bottle 61, so that the release agent can be sprayed. The material taking mechanism 7 is fixedly connected to the lower side of the frame 51 and is located below the release agent spraying component 6. The material taking mechanism 7 is used to take out the plastic product in the molding cavity.

[0018] When using this device, perform the following steps in sequence: 1. Initial release agent spraying: ① The mold opening and closing component 3 is in the mold opening state, separating the first mold base 21 and the second mold base 22. At this time, the ejector 4 does not work; ② The lifting mechanism 52 of the gantry 5 lowers the frame 51 so that the release agent spraying component 6 corresponds to the molding cavity of the movable mold base 23. The pneumatic pressing head 62 presses the nozzle of the release agent bottle 61 to spray the release agent. Then, the release agent bottle 61 is rotated circumferentially by the surrounding driving mechanism to evenly spray the release agent into the molding cavity. 2. Mold closing injection molding: ① Raise the frame 51 to the highest position through the lifting mechanism 52 of the gantry 5, so that the release agent spraying component 6 and the material taking mechanism 7 are in the high position; ② The mold-closing component 3 is opened and closed to close the mold. The first mold base 21 and the second mold base 22 are brought close together. The ejector 4 does not work. After the first mold base 21 and the second mold base 22 are closed, the injection molding material is injected into the molding cavity of the movable mold base 23, and the plastic material in the molding cavity is cooled and formed; 3. Material collection: ① The mold opening and closing components 3 are opened to separate the first mold base 21 and the second mold base 22. The ejector 4 stops working, and the lifting mechanism 52 of the gantry 5 lowers the frame 51 so that the material removal mechanism 7 corresponds to the molding cavity of the movable mold base 23; ② The ejector 4 works to push out the movable mold base 23, and the plastic product is taken out from the molding cavity of the movable mold base 23 through the material taking mechanism 7. Then the ejector 4 works to drive the movable mold base 23 back to its original position; 4. Release agent spraying: ① The lifting mechanism 52 of the gantry 5 continues to lower the frame 51, so that the release agent spraying component 6 corresponds to the molding cavity of the movable mold base 23. The pneumatic pressing head 62 presses the nozzle of the release agent bottle 61 to spray the release agent. Then, the release agent bottle 61 is rotated circumferentially by the surrounding driving mechanism to evenly spray the release agent into the molding cavity. ② Place a collection frame below the connecting frame 13, and the material taking mechanism 7 moves downward to send the plastic products out for collection; 5. Return: The lifting mechanism 52 of the gantry 5 raises the frame 51 to the highest position, so that the release agent spraying component 6 and the material taking mechanism 7 are in a high position; 6. Continuous operation: Repeat the above steps 2 to 5 to perform continuous injection molding operations.

[0019] In this embodiment, by designing the release agent spraying component 6, a circumferential driving mechanism is used so that when the pneumatic pressing head 62 presses the release agent bottle 61 to spray the release agent, the release agent bottle 61 can perform circumferential spraying, thereby spraying the release agent over a large range and evenly.

[0020] See also Figures 1 to 4 , the lifting mechanism 52 includes: The mounting platform 521 is connected to the top of the gantry 5, and vertical positioning bars 5211 are also processed on both sides of the mounting platform 521; A first motor 522 , the first motor 522 is fixedly mounted on the mounting platform 521 ; A transmission screw 523 , which is fixedly connected to the output end of the first motor 522 and extends upward; The U-shaped frame 524 has an opening side facing downward and both sides of the U-shaped frame 524 are made of C-shaped steel that slides with the vertical positioning bar 5211. The upper end of the transmission screw 523 passes through the top of the U-shaped frame 524 and is threadedly connected to the top of the U-shaped frame 524. The bottoms of both sides of the U-shaped frame 524 are fixedly connected to the frame 51.

[0021] When the lifting mechanism 52 is lifted or lowered, the first motor 522 of the mounting platform 521 is started, driving the transmission screw 523 to rotate, so that the U-shaped frame 524 can be lifted or lowered under the threaded transmission of the transmission screw 523, and the C-shaped steel structures on both sides of the U-shaped frame 524 can match the vertical positioning bars 5211 on both sides of the mounting platform 521, thereby maintaining the stability of the U-shaped frame 524 during the lifting process.

[0022] See also Figure 1 、 Figure 2 、 Figure 3 as well as Figure 9 , vertical positioning rods 511 are also provided on both sides of the frame 51, and the surrounding driving mechanism includes: The slide rail 63 has two ends slidably connected to the vertical positioning rods 511 on both sides, and the slide rail 63 is also slidably connected to the slide beam 631. The vertical positioning rods 511 are used to vertically position the slide rail 63, so that the slide rail 63 can move up and down relative to the frame 51. The arrangement of the slide beam 631 enables the slide beam 631 to not only move up and down synchronously with the slide rail 63, but also to move horizontally relative to the slide rail 63. The mounting plate 64 is fixedly connected to the sliding beam 631, and a plurality of first mounting screw holes are provided on both sides of the mounting plate 64. The pneumatic pressing head 62 is fixed to the upper side of the mounting plate 64 by bolts, and the release agent bottle 61 is fixed to the lower side of the mounting plate 64 by bolts, and the pneumatic pressing head 62 corresponds to the nozzle of the release agent bottle 61. The bottom of the mounting plate 64 is also rotatably connected to the rotating shaft 641; the mounting plate 64 is fixed to the sliding beam 631, so that the mounting plate 64 can move up and down and move horizontally. At the same time, by Multiple first mounting screw holes are provided on the upper and lower sides, so that the pneumatic pressing head 62 and the release agent bottle 61 can be mounted vertically on the mounting plate 64. In addition, the present embodiment shows a mold with a single molding cavity, so the pneumatic pressing head 62 and the release agent bottle 61 are both mounted in the middle position. If a mold has multiple molding cavities, appropriate first mounting screw holes can be selected to mount multiple pneumatic pressing heads 62 and release agent bottles 61 on the mounting plate 64 to correspond to each molding cavity. The rotating shaft 641 at the bottom of the mounting plate 64 can rotate relative to the mounting plate 64. The vertical adjustment frame 65 is rotatably connected to a vertical screw 651. The end of the rotating shaft 641 extends into the vertical adjustment frame 65 and has a screw hole at the end for threaded connection with the vertical screw 651. The fixing frame 66 is fixedly connected to the frame 51, and the fixing frame 66 is installed with a second motor 661, and the output shaft of the second motor 661 is fixedly connected to the lower end of the vertical adjustment frame 65; by rotating the vertical screw 651 of the vertical adjustment frame 65, since the end of the rotating shaft 641 is threadedly connected to the vertical screw 651, the rotating shaft 641 can be adjusted up and down, and the second motor 661 installed on the fixing frame 66 can drive the vertical adjustment frame 65 to rotate.

[0023] by Figure 9 Taking the left figure as an example, the rotating shaft 641 corresponds to the output shaft of the second motor 661. Therefore, when spraying the release agent, the second motor 661 can be turned off or kept rotating. When the second motor 661 rotates to drive the vertical adjustment frame 65 to rotate, since the rotating shaft 641 corresponds to the output shaft of the second motor 661, the rotating shaft 641 and the output shaft of the second motor 661 can be regarded as a whole. Therefore, it does not cause the movement of the mounting plate 64, and the release agent bottle 61 does not move in a circular motion. by Figure 9 Taking the figure on the right as an example, the position of the rotating shaft 641 in the vertical adjustment frame 65 is adjusted by the vertical screw 651, thereby adjusting the position of the entire mounting plate 64 upward. At this time, when the second motor 661 rotates, since the rotating shaft 641 and the output shaft of the second motor 661 no longer correspond to each other, when the second motor 661 rotates, it can drive the rotating shaft 641 of the vertical adjustment frame 65 to perform a circular motion, thereby enabling the entire mounting plate 64 to perform a circular motion. When the mounting plate 64 performs the circular motion, it can adaptively perform vertical motion in the up and down directions and horizontal shifting. In this way, the release agent bottle 61 can perform circular spraying during spraying to ensure the uniformity of the spraying, and the circular motion range of the mounting plate 64 can be adjusted by adjusting the up and down positions of the rotating shaft 641, thereby changing the spraying range of the release agent bottle 61 to adapt to the release agent spraying requirements of molding cavities of different sizes.

[0024] See also Figure 1 、 Figure 2 and Figure 8 , the material taking mechanism 7 includes: Suction cup frame 71, the suction cup frame 71 is fixed to the bottom of the frame 51, and the suction cup frame 71 is provided with a plurality of second mounting screw holes; The pneumatic suction cup 72 is fixed to the suction cup frame 71 by bolts.

[0025] When taking materials, Figure 8 In the middle figure, the pneumatic suction cup 72 of the suction cup frame 71 is now aligned with the movable mold base 23. As the ejector 4 extends, the movable mold base 23 can be pushed toward the pneumatic suction cup 72. In this way, the plastic product in the molding cavity of the movable mold base 23 is adsorbed by the pneumatic suction cup 72. Then, as the ejector 4 retracts, the movable mold base 23 is returned to its original position, and the pneumatic suction cup 72 takes the plastic product out of the molding cavity through adsorption.

[0026] See also Figure 7 and Figure 8 The first mold base 21 is provided with a sliding cavity 211 on the inner side, and the movable mold base 23 is provided with a slider 231 matching the sliding cavity 211; The elastic connection mechanism includes: Two push blocks 232, the two push blocks 232 are fixedly connected to both sides of the slider 231; The two sets of springs 233 are elastically connected and fixed between the two push blocks 232 and the inner wall of the sliding cavity 211 respectively through the two sets of springs 233.

[0027] When the push block 232 is not pushed, the elastic force of the two sets of springs 233 can cause the slider 231 to be retracted into the slide cavity 211, so that the movable mold base 23 and the first mold base 21 are in close contact. When the push block 232 is pushed, the two sets of springs 233 are compressed, so that the slider 231 can slide out of the sliding cavity 211 , thereby separating the movable mold base 23 from the first mold base 21 .

[0028] See also Figures 5 to 7 , the mold opening and closing parts 3 include: Two groups of hydraulic rods 31 are respectively fixed to the inner walls of the first chamber 11 and the second chamber 12. The telescopic end of one group of hydraulic rods 31 is fixedly connected to the first die base 21, and the telescopic end of the other group of hydraulic rods 31 is fixedly connected to the second die base 22. Two hydraulic pumps 32 are installed in the first chamber 11 and the second chamber 12 respectively. The two hydraulic pumps 32 are used to drive the extension and retraction of the two groups of hydraulic rods 31 respectively.

[0029] The hydraulic pump 32 can drive the two groups of hydraulic rods 31 to extend and retract. When closing the mold, the two groups of hydraulic rods 31 are controlled to extend to close the first mold base 21 and the second mold base 22. When opening the mold, the two groups of hydraulic rods 31 are controlled to retract to separate the first mold base 21 and the second mold base 22 from each other.

[0030] See also Figure 7 , the ejector 4 includes: Two electric push rods are fixedly connected to the inner wall of the first chamber 11 , and the telescopic ends of the two electric push rods correspond to the two push blocks 232 respectively but are not connected.

[0031] The ejector 4 is set as an electric push rod, so that the electric push rod can be electrically extended and shortened. After the mold is opened, the electric push rod can be electrically extended to push the push block 232. The structure is simple and easy to use.

[0032] In this embodiment, when forming a plastic product, the forming is performed according to the following method: S1: The mold opening and closing component 3 is in the mold opening state, separating the first mold base 21 from the second mold base 22, and the ejector 4 is not working at this time; S2: The lifting mechanism 52 of the gantry 5 lowers the frame 51 so that the release agent spraying component 6 corresponds to the molding cavity of the movable mold base 23. The pneumatic pressing head 62 presses the nozzle of the release agent bottle 61 to spray the release agent. Then, the release agent bottle 61 is rotated circumferentially by the surrounding driving mechanism to evenly spray the release agent into the molding cavity. S3: The frame 51 is raised to the highest position by the lifting mechanism 52 of the gantry 5, so that the release agent spraying component 6 and the material taking mechanism 7 are in the high position, the mold opening and closing component 3 is closed, and the first mold base 21 and the second mold base 22 are brought close to each other, and the ejector 4 is not working. After the first mold base 21 and the second mold base 22 are closed, the injection molding material is injected into the molding cavity of the movable mold base 23, and the plastic material in the molding cavity is cooled and formed; S4: The mold opening and closing components 3 are opened to separate the first mold base 21 and the second mold base 22. The ejector 4 stops working, and the lifting mechanism 52 of the gantry 5 lowers the frame 51 so that the material taking mechanism 7 corresponds to the molding cavity of the movable mold base 23. S5: The ejector 4 works to push out the movable mold base 23, and the plastic product is taken out from the molding cavity of the movable mold base 23 through the material taking mechanism 7. Then the ejector 4 works to drive the movable mold base 23 back to its original position. S6: The lifting mechanism 52 of the gantry 5 continues to lower the frame 51, so that the release agent spraying component 6 corresponds to the molding cavity of the movable mold base 23. The pneumatic pressing head 62 presses the nozzle of the release agent bottle 61 to spray the release agent. Then, the release agent bottle 61 is rotated circumferentially by the surrounding driving mechanism to evenly spray the release agent in the molding cavity. At the same time, the material taking mechanism 7 located below releases and collects the plastic product. S7: The lifting mechanism 52 of the gantry 5 raises the frame 51 to the highest position, so that the release agent spraying component 6 and the material taking mechanism 7 are in a high position; S8: Repeat steps S3 to S7 to perform continuous plastic product molding operations.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A plastic product molding device, comprising an injection molding machine body, wherein a first chamber and a second chamber are respectively provided on both sides of the injection molding machine body, and the first chamber and the second chamber are connected by a connecting frame, characterized in that: Also includes: A mold, comprising a first mold base, a second mold base, and a movable mold base, wherein the first mold base is located in the first cavity, the second mold base is located in the second cavity, the movable mold base is movably connected to the first mold base via an elastic connection mechanism, and the movable mold base defines a molding cavity; A mold opening and closing component, wherein the mold opening and closing component is respectively arranged in the first cavity and the second cavity, and the mold opening and closing component is used to control the opening and closing of the mold between the first mold base and the second mold base; An ejector, the ejector being disposed in the first cavity and being used to eject the movable mold base after mold opening; A gantry, the gantry being located outside the second chamber, the gantry being provided with a frame and a lifting mechanism, the lower side of the lifting mechanism being fixedly connected to the frame; A release agent spraying component connected to the lower side of the frame, comprising a release agent bottle, a pneumatic pressing head, and a surrounding drive mechanism, wherein the surrounding drive mechanism is used to drive the release agent bottle to perform circumferential spraying; A material taking mechanism is fixedly connected to the lower side of the frame and is located below the release agent spraying component. The material taking mechanism is used to take out the plastic product in the molding cavity.

2. A plastic product forming device according to claim 1, characterized in that: The lifting mechanism comprises: An installation platform is installed and connected to the top of the gantry, and vertical positioning strips are also processed on both sides of the installation platform; a first motor, the first motor being fixedly mounted on the mounting platform; a transmission screw, the transmission screw being fixedly connected to the output end of the first motor and extending upward; A U-shaped frame, wherein the opening side of the U-shaped frame faces downward and both sides of the U-shaped frame are made of C-shaped steel that slides and matches the vertical positioning bar. The upper end of the transmission screw passes through the top of the U-shaped frame and is threadedly connected to the top of the U-shaped frame. The bottoms of both sides of the U-shaped frame are fixedly connected to the frame.

3. A plastic product forming device according to claim 2, characterized in that: Vertical positioning rods are also provided on both sides of the frame, and the surrounding drive mechanism includes: A slide rail, wherein both ends of the slide rail are slidably connected to the vertical positioning rods on both sides, and the slide rail is also slidably connected to a slide beam; A mounting plate is mounted and fixed between the mounting plate and the sliding beam, a plurality of first mounting screw holes are provided on the upper and lower sides of the mounting plate, the pneumatic pressing head is fixed to the upper side of the mounting plate with bolts, the release agent bottle is fixed to the lower side of the mounting plate with bolts, and the pneumatic pressing head corresponds to the nozzle of the release agent bottle, and the bottom of the mounting plate is also rotatably connected to a rotating shaft; A vertical adjustment frame, wherein the vertical adjustment frame is rotatably connected to a vertical screw, and an end of the rotating shaft extends into the vertical adjustment frame and is provided with a screw hole threadedly connected to the vertical screw; A fixing frame is fixedly connected to the frame, and a second motor is installed on the fixing frame, and an output shaft of the second motor is fixedly connected to the lower end of the vertical adjustment frame.

4. A plastic product forming device according to claim 3, characterized in that: The material taking mechanism comprises: A suction cup frame, the suction cup frame is fixed to the bottom of the frame, and the suction cup frame is provided with a plurality of second mounting screw holes; A pneumatic suction cup is fixed to the suction cup frame by bolts.

5. A plastic product forming device according to claim 4, characterized in that: A sliding cavity is provided inside the first mold base, and a sliding block matching the sliding cavity is provided on the movable mold base; The elastic connection mechanism comprises: Two push blocks, the two push blocks are fixedly connected to two sides of the slider respectively; Two groups of springs, the two push blocks are elastically connected and fixed to the inner wall of the sliding cavity respectively through the two groups of springs.

6. A plastic product forming device according to claim 5, characterized in that: The mold opening and closing components include: Two groups of hydraulic rods, the two groups of hydraulic rods are respectively fixed to the inner wall of the first chamber and the inner wall of the second chamber, the telescopic end of one group of hydraulic rods is fixedly connected to the first mold base, and the telescopic end of the other group of hydraulic rods is fixedly connected to the second mold base; Two hydraulic pumps are installed in the first chamber and the second chamber respectively, and are used to drive the extension and retraction of the two groups of hydraulic rods respectively.

7. A plastic product forming device according to claim 6, characterized in that: The ejector comprises: Two electric push rods are fixedly connected to the inner wall of the first chamber, and the telescopic ends of the two electric push rods respectively correspond to the two push blocks but are not connected.

8. A plastic product forming device according to any one of claims 1 to 7, wherein the forming device further comprises a forming method, characterized in that: The following steps are included: S1: The mold opening and closing parts are in the mold opening state, and the ejector does not work at this time; S2: The gantry's lifting mechanism lowers the frame so that the release agent spraying component is aligned with the molding cavity of the movable mold base. Then, the release agent bottle is rotated circumferentially by the surrounding drive mechanism to evenly spray the release agent into the molding cavity. S3: The frame is raised to the highest position through the lifting mechanism of the gantry, the mold and die parts are opened and closed, the ejector does not work, the injection molding material is injected into the molding cavity of the movable mold base, and the plastic material in the molding cavity is cooled and formed; S4: The mold opening and closing parts are opened, the ejector does not work, and the gantry lifting mechanism lowers the frame so that the material taking mechanism corresponds to the molding cavity of the movable mold base; S5: The ejector works to push the movable mold base out, and the plastic product is taken out from the molding cavity of the movable mold base through the material taking mechanism. Then the ejector works to drive the movable mold base back to its original position. S6: The gantry's lifting mechanism continues to lower the frame so that the release agent spraying component is aligned with the molding cavity of the movable mold base. The release agent bottle is then rotated circumferentially by the surrounding drive mechanism to evenly spray the release agent into the molding cavity. At the same time, the material removal mechanism located below releases and collects the plastic product. S7: The lifting mechanism of the gantry raises the frame to the highest position, so that the release agent spraying parts and the material taking mechanism are in a high position; S8: Repeat steps S3 to S7 to perform continuous plastic product molding operations.

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