A plastic injection molding equipment and injection molding process

Abstract

This invention discloses a plastic injection molding equipment and injection molding process, relating to the technical field of plastic processing equipment. The invention includes a base plate, with a sliding structure fixedly connected to its upper surface. An adjustment structure is provided within the inner cavity of the sliding structure. A placement structure is fixedly connected to the upper surface of the sliding structure. An installation structure is fixedly connected to the rear end of the middle portion of the upper surface of the base plate. A lifting structure is provided at the front of the upper end of the installation structure. Sealing structures are evenly distributed around the lower outer periphery of the lifting structure. A driving structure is provided on the upper surface of the installation structure. Engaging structures are provided on both sides of the inner cavity of the placement structure. Through the placement structure on the upper surface of the sliding structure, the injection mold is placed individually during use. Simultaneously, the sealing performance of the device is enhanced by the insertion bracket, preventing material leakage and affecting the yield rate. This facilitates user operation, improves work efficiency, and, through the automatic opening and closing placement structure, avoids personnel contact with the high-temperature mold, improving worker safety.

Description

Technical Field

[0001] This invention relates to the field of plastic processing equipment technology, and in particular to a plastic injection molding equipment and injection molding process. Background Technology

[0002] Plastic parts are widely used in various fields such as industry and daily life due to their good corrosion resistance and easy processing. The traditional method utilizes the thermoplasticity of plastics, heating and melting the plastic raw material and pouring it into a mold, then cooling it to obtain the plastic part.

[0003] Existing molds require manual loading and unloading, which can easily cause burns due to the high temperature of the molds. In addition, manual loading and unloading is inefficient, and manual addition of plastic raw materials makes it difficult to control the amount added, increasing production costs. The existing molds have a single integrated design and limited functionality, which also increases production costs.

[0004] Therefore, the existing plastic injection molding equipment and process cannot meet the needs of actual use, so there is an urgent need for improved technology in the market to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a plastic injection molding equipment and injection molding process, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a plastic injection molding equipment and injection molding process, comprising a base plate, a sliding structure fixedly connected to the upper surface of the base plate, an adjustment structure provided in the inner cavity of the sliding structure, a placement structure fixedly connected to the upper surface of the sliding structure, an installation structure fixedly connected to the middle rear end of the upper surface of the base plate, a lifting structure provided in the front of the upper end of the installation structure, a sealing structure evenly provided in the lower outer periphery of the lifting structure, a driving structure provided in the upper surface of the installation structure, and engaging structures provided on both sides of the inner cavity of the placement structure.

[0008] Preferably, the sliding structure includes a slide rod symmetrically and fixedly connected along the transverse centerline of the base plate, a placement frame fixedly connected to the inner cavity of the slide rod on an adjacent side, a slider symmetrically and slidably connected to the outer surface of the slide rod along the longitudinal centerline of the base plate, and a placement structure fixedly connected to the upper end face of the slider.

[0009] Preferably, the adjustment structure includes adjustment rods symmetrically rotatably connected to the front and rear sides of the inner cavity of the placement frame along the center line of the base plate. The outer surface of the adjustment rods is symmetrically provided with threads in opposite directions. The adjustment rods pass through the slider and are threadedly connected. An adjustment motor is fixedly connected to the front right side of the upper surface of the base plate. The rotating shaft of the front adjustment rod passes through the placement frame and is fixedly connected to the output end of the adjustment motor. A transmission structure is rotatably connected to the left end face of the placement frame. The transmission structure includes pulleys symmetrically rotatably connected to the left end face of the placement plate along the center line. The rotating shafts of the left end faces of the two adjustment rods pass through the placement frame and are fixedly connected to the two pulleys respectively. The two pulleys are connected by belt drive.

[0010] Preferably, the placement structure includes a left template fixedly connected to the upper end face of the left slider, a right template fixedly connected to the upper end face of the right slider, a plug-in bracket fixedly connected to the left end face of the right template, a groove matching the plug-in bracket on the right end face of the left template, one end of an injection port fixedly connected to the left side of the middle part of the upper end face of the left template, and the other end of the injection port fixedly connected to the left side of the middle part of the upper end face of the right template, with the adjacent end faces of the two ends of the injection port matching each other.

[0011] Preferably, the mounting structure includes a mounting rod fixedly connected to the rear end of the middle part of the upper surface of the base plate, a placement plate fixedly connected to the upper end of the mounting rod, a through hole matching the lifting structure being opened in the middle of the upper end of the placement plate, and limit blocks being uniformly fixedly connected to the outer surface of the inner cavity of the through hole on the upper surface of the placement plate.

[0012] Preferably, the driving structure includes a worm gear ring rotatably connected to the middle of the upper surface of the placement plate, a rotating frame fixedly connected to the placement plate at the rear of the worm gear ring, a worm rotatably connected to the inner cavity of the rotating frame on the upper surface of the placement plate, the worm meshing with the worm gear ring, a drive motor fixedly connected to the placement plate on the left side of the worm, a rotating shaft on the left side of the worm passing through the rotating frame on the upper surface of the placement plate and fixedly connected to the output end of the drive motor, the cavity of the worm gear ring communicating with the through hole on the upper surface of the placement plate, and a lifting structure slidably connected to the cavity of the through hole on the upper surface of the placement plate, and the lifting structure threadedly connected to the cavity of the worm gear ring.

[0013] Preferably, the lifting structure includes a lifting tube slidably connected to the inner cavity of the through hole on the upper end face of the placement plate, a discharge ring fixedly connected to the lower end face of the lifting tube, a sealing structure evenly arranged along the center line on the outer periphery of the discharge ring, a feeding tube rotatably connected to the upper end face of the lifting tube, and a thread matching the feeding tube on the outer surface of the feeding tube. The lifting tube also includes a rotating tube slidably connected to the inner cavity of the through hole on the upper end face of the placement plate, a threaded connection between the outer surface of the rotating tube and the inner cavity of the worm gear ring, and a sliding groove evenly arranged on the outer surface of the rotating tube, with the inner cavity of the sliding groove slidably connected to the limiting block.

[0014] Preferably, the sealing structure includes an installation groove evenly provided along the center line of the inner cavity of the discharge ring. A telescopic rod is fixedly connected to the side of the inner cavity of the installation groove near the discharge ring. A spring is movably sleeved on the outer surface of the telescopic rod. An adjusting block is fixedly connected to the end of the telescopic rod away from the discharge ring. One end of the spring sleeved on the outer surface of the telescopic rod is fixedly connected to the discharge ring. The other end of the spring on the outer surface of the telescopic rod is fixedly connected to the adjusting block. The adjusting block is slidably connected in the inner cavity of the installation groove. A connecting claw is fixedly connected to the end of the adjusting block away from the discharge ring.

[0015] Preferably, the locking structure includes a connecting groove symmetrically opened along the center line on the left side of the inner cavity of the left template. A locking spring is fixedly connected to the side of the connecting groove away from the inner cavity of the left template. A locking block is fixedly connected to the end of the locking spring away from the left template. Another connecting groove is opened along the center line on the right side of the inner cavity of the right template. Another locking spring is fixedly connected to the inner cavity of the other connecting groove. Another locking block is fixedly connected to the lower end face of the other locking spring. Both locking blocks are slidably connected to the inner cavity of the connecting groove.

[0016] A plastic injection molding process includes the following steps:

[0017] S1: Place the injection molds and place the two injection molds in the inner cavities of the left template 41 and the right template 42 respectively. At this time, the locking block 93 moves upward, so the locking spring 92 contracts. When the injection molds are placed in the left template 41 and the right template 42, the locking spring 92 extends, so the locking block 93 extends, thereby making the locking block 93 engage with the injection mold.

[0018] S2: Adjust the height of the feed ring and start the drive structure 8 to make the output end of the drive motor 83 rotate, so the worm 82 rotates, which in turn makes the worm wheel tube 81 rotate. At this time, since the lifting tube 62 is threadedly connected to the worm wheel ring 82, and since the slide groove 622 is engaged with the limit block 53, the height of the lifting tube 62 is reduced, so that the feed ring 61 is flush with the inner cavity of the injection port 44.

[0019] S3: Close the placement structure and start the adjustment structure 3, so that the output end of the adjustment motor 31 rotates, so the front adjustment rod 32 rotates, which in turn causes the front pulley 331 to rotate. At this time, the belt 332 drives the rear pulley 331 to rotate, so the rear adjustment rod 32 rotates. Since the outer surface of the adjustment rod 32 has threads in opposite directions, the two sliders 23 move closer to each other, so that the plug-in bracket 43 engages with the groove on the right side of the left template 41, thereby closing and sealing the placement structure 4.

[0020] S4: Adjusting the sealing of the injection port. Since the left template 41 and the right template 42 are close to each other, the two injection ports 44 are close to each other, which causes the connecting claw 74 to be in contact with the inner cavity of the injection mold's feed port and to retract into the inner cavity of the lifting tube 62. Therefore, the telescopic rod 72 retracts, and the spring on the outer surface of the telescopic rod 72 retracts, thereby filling the gap in the inner cavity of the injection mold's feed port.

[0021] S5: Add plastic raw material and connect the plastic raw material filling pipe to the feed pipe 63 by thread. At this time, the plastic raw material enters the injection mold cavity through the lifting pipe 622.

[0022] S6: Perform blow molding, remove the injection pipe, and then connect the air inlet pipe to the feed pipe 63 by thread. At this time, air is injected into the inner cavity of the device to blow mold the plastic raw material.

[0023] The present invention has the following beneficial effects:

[0024] 1. This invention utilizes a sliding structure on the upper surface of the base plate to install and place the placement structure during use. This allows for easy opening of the placement structure after injection molding to remove the molded plastic product. An adjustment structure on the upper surface of the base plate allows for adjustment of the slider position during use, preventing burns caused by manual mold opening and closing due to high temperatures. The placement structure on the upper surface of the sliding structure allows for individual placement of the injection mold during use. Simultaneously, the plug-in bracket enhances the device's sealing performance, preventing material leakage and affecting the yield rate. This invention facilitates user operation, improves work efficiency, and, through the automatic opening and closing placement structure, avoids personnel contact with the high-temperature mold, enhancing worker safety.

[0025] 2. This invention utilizes an installation structure on the base plate to limit the sliding of the lifting tube, facilitating the addition of plastic raw materials during use. The lifting structure on the installation structure connects the feed pipe to the delivery pipe, preventing manual addition from damaging the mold or injuring personnel. The sealing structure at the bottom of the lifting structure seals and fills the mold inlet, preventing air bubbles from damaging the product during injection. The drive structure at the top of the installation structure drives the lifting tube, allowing for height adjustment. The locking structure within the placement cavity secures and fixes the injection mold, facilitating mold replacement and reducing the production cost of plastic parts.

[0026] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the left side view of the three-dimensional structure of the present invention;

[0030] Figure 3 This is a rear-view stereoscopic structural diagram of the present invention;

[0031] Figure 4 This is a schematic diagram of the half-section three-dimensional structure of the present invention;

[0032] Figure 5 For the present invention Figure 3 Enlarged 3D structural diagram of region A in the middle;

[0033] Figure 6 For the present invention Figure 4 Enlarged 3D structural diagram of region B in the middle;

[0034] Figure 7 For the present invention Figure 4 A magnified three-dimensional structural diagram of region D in the middle.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Base plate, 2-Sliding structure, 21-Slide rod, 22-Placement frame, 23-Slider, 3-Adjustment structure, 31-Adjustment motor, 32-Adjustment rod, 33-Transmission structure, 331-Pulley, 332-Belt, 4-Placement structure, 41-Left template, 42-Right template, 43-Plug-in frame, 44-Injection port, 5-Mounting structure, 51-Mounting rod, 52-Placement plate, 53-Limiting block, 6-Lifting structure, 61-Discharge ring, 62-Lifting tube, 621-Rotating tube, 622-Slide groove, 63-Feeding tube, 7-Sealing structure, 71-Mounting groove, 72-Telescopic rod, 73-Adjustment block, 74-Connecting claw, 8-Drive structure, 81-Worm gear ring, 82-Worm, 83-Drive motor, 9-Interlocking structure, 91-Connecting groove, 92-Interlocking spring, 93-Interlocking block. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0038] Please see Figure 1-7 As shown, this embodiment is a plastic injection molding equipment and injection molding process, including a base plate 1. The base plate 1 is characterized by: a sliding structure 2 fixedly connected to its upper surface; an adjustment structure 3 provided within the inner cavity of the sliding structure 2; a placement structure 4 fixedly connected to the upper surface of the sliding structure 2; an installation structure 5 fixedly connected to the rear end of the middle portion of the upper surface of the base plate 1; a lifting structure 6 provided at the front of the upper surface of the installation structure 5; sealing structures 7 evenly distributed at the lower outer periphery of the lifting structure 6; a driving structure 8 provided on the upper surface of the installation structure 5; and engaging structures 9 provided on both sides of the inner cavity of the placement structure 4.

[0039] Furthermore, the sliding structure 2 includes a slide rod 21 symmetrically and fixedly connected along the transverse centerline of the base plate 1. A placement frame 22 is fixedly connected to the inner cavity of the slide rod 21 on an adjacent side. A slider 23 is symmetrically and slidably connected to the outer surface of the slide rod 21 along the longitudinal centerline of the base plate 1. A placement structure 4 is fixedly connected to the upper end face of the slider 23. Through the sliding structure 2 on the upper end face of the base plate 1, the placement structure 4 is installed and placed during use, and then it is convenient to open the placement structure 4 after injection molding to remove the molded plastic product, which facilitates personnel use and improves work efficiency.

[0040] Furthermore, the adjustment structure 3 includes adjustment rods 32 symmetrically rotatably connected to the front and rear sides of the inner cavity of the placement frame 22 along the center line of the base plate 1. The outer surface of the adjustment rods 32 is symmetrically provided with threads in opposite directions. The adjustment rods 32 pass through the slider 23 and are threadedly connected. An adjustment motor 31 is fixedly connected to the front right side of the upper end face of the base plate 1. The rotating shaft of the front adjustment rod 32 passes through the placement frame 22 and is fixedly connected to the output end of the adjustment motor 31. A transmission structure 33 is rotatably connected to the left end face of the placement frame 22. The transmission structure 33 includes pulleys 331 symmetrically rotatably connected to the left end face of the placement plate 22 along the center line. The rotating shafts of the left end faces of the two adjustment rods 32 pass through the placement frame 22 and are fixedly connected to the two pulleys 331 respectively. The two pulleys 331 are connected by a belt 332. Through the adjustment structure 3 on the upper end face of the base plate 1, the position of the slider 23 can be adjusted during use, thereby avoiding burns caused by high temperature when personnel manually open and close the mold.

[0041] Furthermore, the placement structure 4 includes a left template 41 fixedly connected to the upper surface of the left slider 23, a right template 42 fixedly connected to the upper surface of the right slider 23, and a connector 43 fixedly connected to the left surface of the right template 42. The right surface of the left template 41 has a groove that matches the connector 43. One end of an injection port 44 is fixedly connected to the middle left side of the upper surface of the left template 41, and the other end of the injection port 44 is fixedly connected to the middle left side of the upper surface of the right template 42. The adjacent end faces of the two ends of the injection port 44 match each other. Through the placement structure 4 on the upper surface of the sliding structure 2, the injection mold is placed individually during use. Simultaneously, the connector 43 enhances the sealing of the device, preventing material leakage from affecting the yield. Furthermore, the automatic opening and closing of the placement structure 4 prevents personnel from contacting the high-temperature mold, improving personnel safety.

[0042] Furthermore, the installation structure 5 includes an installation rod 51 fixedly connected to the rear end of the middle part of the upper end face of the base plate 1. A placement plate 52 is fixedly connected to the upper end face of the installation rod 51. A through hole matching the lifting structure 6 is opened in the middle of the upper end of the placement plate 52. Limiting blocks 53 are uniformly fixedly connected to the outer surface of the inner cavity of the through hole on the upper end face of the placement plate 52. The lifting pipe 62 is limited and slid through the installation structure 5 on the base plate 1, thereby facilitating the filling of plastic raw materials by personnel during use.

[0043] Furthermore, the drive structure 8 includes a worm gear ring 81 rotatably connected to the middle of the upper end face of the placement plate 52. The rear of the worm gear ring 81 has a rotating frame fixedly connected to the placement plate 52. A worm 82 is rotatably connected to the inner cavity of the rotating frame on the upper end face of the placement plate 52. The worm 82 meshes with the worm gear ring 81. The left side of the worm 82 has a drive motor 83 fixedly connected to the placement plate 52. The left rotating shaft of the worm 82 passes through the rotating frame on the upper end face of the placement plate 52 and is fixedly connected to the output end of the drive motor 83. The inner cavity of the worm gear ring 81 communicates with the through hole on the upper end face of the placement plate 52. The lifting structure 6 is slidably connected to the inner cavity of the through hole on the upper end face of the placement plate 52. The lifting structure 6 is threadedly connected to the inner cavity of the worm gear ring 81. The lifting tube 62 is driven by the drive structure 8 at the upper end of the mounting structure 5 during use, thereby adjusting the height of the lifting tube 62 during use.

[0044] Furthermore, the lifting structure 6 includes a lifting pipe 62 slidably connected to the inner cavity of the through hole on the upper end face of the placement plate 52. A discharge ring 61 is fixedly connected to the lower end face of the lifting pipe 62. A sealing structure 7 is evenly arranged along the center line on the outer periphery of the discharge ring 61. A feed pipe 63 is rotatably connected to the upper end face of the lifting pipe 62. The outer surface of the feed pipe 63 is threaded to match the conveying pipe. The lifting pipe 62 includes a rotating pipe 621 slidably connected to the inner cavity of the through hole on the upper end face of the placement plate 52. The outer surface of the rotating pipe 621 is threaded to the inner cavity of the worm gear ring 81. A sliding groove 622 is evenly arranged on the outer surface of the rotating pipe 621. The inner cavity of the sliding groove 622 is slidably connected to the limiting block 53. Through the lifting structure 6 on the mounting structure 5, the feed pipe 63 is connected to the conveying pipe during use, thereby avoiding damage to the mold or injury to personnel caused by manual filling.

[0045] Furthermore, the sealing structure 7 includes a mounting groove 71 evenly spaced along the center line of the inner cavity of the discharge ring 61. A telescopic rod 72 is fixedly connected to the side of the inner cavity of the mounting groove 71 near the discharge ring 61. A spring is movably sleeved on the outer surface of the telescopic rod 72. An adjusting block 73 is fixedly connected to the end of the telescopic rod 72 away from the discharge ring 61. One end of the spring sleeved on the outer surface of the telescopic rod 72 is fixedly connected to the discharge ring 61. The other end of the spring on the outer surface of the telescopic rod 72 is fixedly connected to the adjusting block 73. The adjusting block 73 is slidably connected in the inner cavity of the mounting groove 71. A connecting claw 74 is fixedly connected to the end of the adjusting block 73 away from the discharge ring 61. Through the sealing structure 7 at the bottom of the lifting structure 6, the mold inlet is sealed and filled during use to prevent air bubbles from being generated during injection molding and causing product damage.

[0046] Furthermore, the locking structure 9 includes a connecting groove 91 symmetrically opened along the center line on the left side of the inner cavity of the left template 41. A locking spring 41 is fixedly connected to the side of the connecting groove 91 away from the inner cavity of the left template 41. A locking block 93 is fixedly connected to the end of the locking spring 41 away from the left template 41. Another connecting groove 91 is opened along the center line on the right side of the inner cavity of the right template 42. Another locking spring 92 is fixedly connected to the inner cavity of the other connecting groove 91. Another locking block 93 is fixedly connected to the lower end face of the other locking spring 92. Both locking blocks 93 are slidably connected in the inner cavity of the connecting groove 91. By placing the locking structure 9 in the inner cavity of the structure 4, the injection mold is installed and fixed during use, which facilitates the replacement of the injection mold during use and reduces the production cost of plastic parts.

[0047] A plastic injection molding process includes the following steps:

[0048] Place the injection molds and place the two injection molds into the inner cavities of the left template 41 and the right template 42 respectively. At this time, the locking block 93 moves upward, so the locking spring 92 contracts. When the injection molds are placed in the left template 41 and the right template 42, the locking spring 92 extends, so the locking block 93 extends, thereby making the locking block 93 engage with the injection mold.

[0049] Adjusting the height of the feed ring and starting the drive structure 8 causes the output end of the drive motor 83 to rotate, so the worm 82 rotates, which in turn causes the worm wheel tube 81 to rotate. At this time, since the lifting tube 62 is threadedly connected to the worm wheel ring 82, and since the slide groove 622 is engaged with the limit block 53, the height of the lifting tube 62 is reduced, thereby making the feed ring 61 flush with the inner cavity of the injection port 44.

[0050] When the placement structure is closed and the adjustment structure 3 is activated, the output end of the adjustment motor 31 rotates, causing the front adjustment rod 32 to rotate, which in turn causes the front pulley 331 to rotate. At this time, the belt 332 drives the rear pulley 331 to rotate, causing the rear adjustment rod 32 to rotate. Since the outer surface of the adjustment rod 32 has threads in opposite directions, the two sliders 23 move closer to each other, causing the insertion bracket 43 to engage with the groove on the right side of the left template 41, thereby closing and sealing the placement structure 4.

[0051] Adjusting the sealing of the injection port: Since the left template 41 and the right template 42 are close to each other, the two injection ports 44 are close to each other, which causes the connecting claw 74 to be in contact with the inner cavity of the injection mold's feed port and to retract into the inner cavity of the lifting tube 62. Therefore, the telescopic rod 72 retracts, and the spring on the outer surface of the telescopic rod 72 retracts, thereby filling the gap in the inner cavity of the injection mold's feed port.

[0052] Add plastic raw material and thread the plastic raw material filling pipe to the feed pipe 63. At this time, the plastic raw material enters the injection mold cavity through the lifting pipe 622.

[0053] Blow molding is performed, the injection pipe is removed, and the air inlet pipe is then threaded into the feed pipe 63. Air is then injected into the inner cavity of the device to blow mold the plastic raw material.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 plastic injection molding machine, comprising a base plate (1), characterized in that; The upper end face of the base plate (1) is fixedly connected to a sliding structure (2), the inner cavity of the sliding structure (2) is provided with an adjustment structure (3), the upper end face of the sliding structure (2) is fixedly connected to a placement structure (4), the middle rear end of the upper end face of the base plate (1) is fixedly connected to an installation structure (5), the front of the upper end face of the installation structure (5) is provided with a lifting structure (6), the lower outer periphery of the lifting structure (6) is uniformly provided with a sealing structure (7), the upper end face of the installation structure (5) is provided with a driving structure (8), and both sides of the inner cavity of the placement structure (4) are provided with a locking structure (9). The installation structure (5) includes an installation rod (51) fixedly connected to the rear end of the middle part of the upper end face of the base plate (1). A placement plate (52) is fixedly connected to the upper end face of the installation rod (51). A through hole matching the lifting structure (6) is opened in the middle part of the upper end of the placement plate (52). Limiting blocks (53) are uniformly fixedly connected to the outer surface of the inner cavity of the through hole on the upper end face of the placement plate (52). The drive structure (8) includes a worm gear ring (81) rotatably connected to the middle of the upper end face of the placement plate (52). The rear of the worm gear ring (81) has a rotating frame fixedly connected to the placement plate (52). A worm (82) is rotatably connected to the inner cavity of the rotating frame on the upper end face of the placement plate (52). The worm (82) meshes with the worm gear ring (81). The left side of the worm (82) has a drive motor (83) fixedly connected to the placement plate (52). The left rotating shaft of the worm (82) passes through the rotating frame on the upper end face of the placement plate (52) and is fixedly connected to the output end of the drive motor (83). The cavity of the worm gear ring (81) communicates with the through hole on the upper end face of the placement plate (52). The lifting structure (6) is slidably connected to the cavity of the through hole on the upper end face of the placement plate (52). The lifting structure (6) is threadedly connected to the cavity of the worm gear ring (81). The lifting structure (6) includes a lifting tube (62) that is slidably connected to the inner cavity of the through hole on the upper end face of the placement plate (52). A discharge ring (61) is fixedly connected to the lower end face of the lifting tube (62). A sealing structure (7) is uniformly arranged along the center line on the outer periphery of the discharge ring (61). A feed tube (63) is rotatably connected to the upper end face of the lifting tube (62). A thread matching the feed tube is opened on the outer surface of the feed tube (63). The lifting tube (62) includes a rotating tube (621) that is slidably connected to the inner cavity of the through hole on the upper end face of the placement plate (52). The outer surface of the rotating tube (621) is threadedly connected to the inner cavity of the worm gear ring (81). A sliding groove (622) is uniformly opened on the outer surface of the rotating tube (621). The inner cavity of the sliding groove (622) is slidably connected to the limiting block (53).

2. The plastic injection molding equipment according to claim 1, characterized in that, The sliding structure (2) includes a slide rod (21) symmetrically fixedly connected along the transverse center line of the base plate (1), a placement frame (22) fixedly connected to the inner cavity of the adjacent side of the slide rod (21), a slider (23) symmetrically slidably connected to the outer surface of the slide rod (21) along the longitudinal center line of the base plate (1), and a placement structure (4) fixedly connected to the upper end face of the slider (23).

3. The plastic injection molding equipment according to claim 2, characterized in that, The adjustment structure (3) includes an adjustment rod (32) symmetrically rotatably connected to the center line of the base plate (1) on both sides of the inner cavity of the placement frame (22). The outer surface of the adjustment rod (32) is symmetrically provided with threads in opposite directions. The adjustment rod (32) passes through the slider (23) and is threadedly connected. An adjustment motor (31) is fixedly connected to the front right side of the upper end face of the base plate (1). The rotating shaft of the front end of the adjustment rod (32) passes through the placement frame (22) and is fixedly connected to the output end of the adjustment motor (31). A transmission structure (33) is rotatably connected to the left end face of the placement frame (22). The transmission structure (33) includes a pulley (331) symmetrically rotatably connected to the left end face of the placement frame (22) along the center line. The rotating shafts of the left end faces of the two adjustment rods (32) pass through the placement frame (22) and are fixedly connected to the two pulleys (331) respectively. The two pulleys (331) are connected by a belt (332).

4. The plastic injection molding equipment according to claim 3, characterized in that, The placement structure (4) includes a left template (41) fixedly connected to the upper end face of the left slider (23), a right template (42) fixedly connected to the upper end face of the right slider (23), a plug-in bracket (43) fixedly connected to the left end face of the right template (42), a groove matching the plug-in bracket (43) opened on the right end face of the left template (41), one end of the injection port (44) fixedly connected to the middle left side of the upper end face of the left template (41), and the other end of the injection port (44) fixedly connected to the middle left side of the upper end face of the right template (42). The two adjacent end faces of the injection port (44) match each other.

5. A plastic injection molding equipment according to claim 4, characterized in that, The sealing structure (7) includes an installation groove (71) evenly provided along the center line of the inner cavity of the discharge ring (61). A telescopic rod (72) is fixedly connected to the side of the inner cavity of the installation groove (71) near the discharge ring (61). A spring is movably sleeved on the outer surface of the telescopic rod (72). An adjusting block (73) is fixedly connected to the end of the telescopic rod (72) away from the discharge ring (61). One end of the spring sleeved on the outer surface of the telescopic rod (72) is fixedly connected to the discharge ring (61). The other end of the spring on the outer surface of the telescopic rod (72) is fixedly connected to the adjusting block (73). The adjusting block (73) is slidably connected in the inner cavity of the installation groove (71). A connecting claw (74) is fixedly connected to the end of the adjusting block (73) away from the discharge ring (61).

6. A plastic injection molding equipment according to claim 5, characterized in that, The locking structure (9) includes a connecting groove (91) symmetrically opened on the left side of the inner cavity of the left template (41) along the center line. A locking spring (92) is fixedly connected to the side of the connecting groove (91) away from the inner cavity of the left template (41). A locking block (93) is fixedly connected to the end of the locking spring (92) away from the left template (41). Another connecting groove (91) is opened on the right side of the inner cavity of the right template (42) along the center line. Another locking spring (92) is fixedly connected to the inner cavity of the other connecting groove (91). Another locking block (93) is fixedly connected to the lower end face of the other locking spring (92). Both locking blocks (93) are slidably connected to the inner cavity of the connecting groove (91).

7. An injection molding process using the plastic injection molding equipment of claim 6, comprising the following steps: S1: Place the injection molds and place the two injection molds in the inner cavities of the left template (41) and the right template (42) respectively. At this time, the locking block (93) moves upward, so the locking spring (92) contracts. When the injection molds are placed in the left template (41) and the right template (42), the locking spring (92) extends, so the locking block (93) extends, thereby making the locking block (93) engage with the injection mold. S2: Adjust the height of the discharge ring and start the drive structure (8) so that the output end of the drive motor (83) rotates, so the worm (82) rotates, which in turn causes the worm wheel ring (81) to rotate. At this time, since the lifting tube (62) is threadedly connected to the worm wheel ring (81), and since the slide groove (622) is engaged with the limit block (53), the height of the lifting tube (62) is reduced, so that the discharge ring (61) and the inner cavity of the injection port (44) are flush with each other. S3: Close the placement structure and start the adjustment structure (3), so that the output end of the adjustment motor (31) rotates, so the front adjustment rod (32) rotates, which in turn causes the front pulley (331) to rotate. At this time, the belt (332) drives the rear pulley (331) to rotate, so the rear adjustment rod (32) rotates. At this time, since the outer surface of the adjustment rod (32) has threads in opposite directions, the two sliders (23) move closer to each other, which causes the plug-in bracket (43) to engage with the groove on the right side of the left template (41), thereby closing and sealing the placement structure (4). S4: Adjust the sealing of the injection port. Since the left template (41) and the right template (42) are close to each other, the two injection ports (44) are close to each other, so that the connecting claw (74) and the inner cavity of the injection mold feed port are attached to each other and shrink towards the inner cavity of the lifting tube (62). Therefore, the telescopic rod (72) shrinks, and the spring on the outer surface of the telescopic rod (72) shrinks, thereby filling the gap in the inner cavity of the injection mold feed port. S5: Add plastic raw material and connect the plastic raw material filling pipe to the feed pipe (63) by thread. At this time, the plastic raw material enters the injection mold cavity through the lifting pipe (62). S6: Perform blow molding, remove the injection pipe, and then connect the air inlet pipe to the feed pipe (63) by thread. At this time, add air into the inner cavity of the device to blow mold the plastic raw material.

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