Plastic product forming device

Abstract

The present invention relates to the technical field of plastic product molding, and more specifically, to a plastic product molding device. It comprises a contact plate arranged on the vertical rod at the front side of a workbench, the interior of a bottom mold has a cavity, a piston rod which contacts and cooperates with the contact plate is slidably arranged in the cavity, a collar is fixedly arranged on the lower side of the cavity, a top rod which passes through the bottom end of the bottom mold and is slidably arranged on the collar, and an elastic member I is arranged between the top rod and the collar. The present invention realizes the automatic molding of plastic products by extruding through the coordinated action of the top mold and the bottom mold, and the molded plastic products are automatically demoulded by the joint action of the piston rod and the contact plate, and a special detection unit is also set to implement strict quality control and detection of plastic products. A series of processes from demoulding, discharging to final detection are all realized in an integrated operation, which reduces the cost of manual operation and ensures the standardization and continuity of the production process.

Description

Technical Field

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

[0002] Plastic products are everyday items made of plastic materials. They are favored for their lightness, durability, cost-effectiveness and ease of processing, and are widely used in many fields. In the production process of plastic products, injection molding and hydroforming are two common molding technologies. For large plastic products, hydroforming equipment is more popular because it can apply greater pressure.

[0003] During the hydraulic forming process, the operator first places the softened plastic on the bottom mold, and then uses the hydraulic cylinder to push the top mold down to fit the bottom mold below, so that the two molds are pressed tightly, and the plastic is evenly squeezed and formed between the molds. After the plastic product is formed, the top mold rises and the operator can take the molded plastic product out of the mold.

[0004] However, the above plastic product molding process still has the following disadvantages:

[0005] 1. Demolding efficiency problem: For large plastic products, manual demoulding is slow, and because the operator needs to work in a high-pressure and high-temperature environment, there are also safety risks;

[0006] 2. Plastic addition problem: When adding softened plastic, manual operation is usually required, which is not only inefficient, but also difficult to accurately control the amount of addition, which can easily lead to material waste or unstable molding quality;

[0007] 3. Quality control issues: The quality of plastic products after molding may vary due to uneven cooling, uneven pressure or other factors. This is not a good factor for the quality of a product. In the future, it will be necessary to add personnel to increase processes to conduct subsequent quality control inspections of plastic products, which will also increase the workload. Summary of the invention

[0008] In order to overcome the problems of demoulding efficiency, plastic addition and quality control in the above-mentioned prior art, the present invention provides a plastic product molding device that provides automatic demoulding, plastic addition and quality inspection integrated functions, including:

[0009] The base is a mounting carrier for the device components, and a motor is mounted on one side of the base;

[0010] A workbench is arranged on the top of the base, the top surface of the workbench is inclined forward, and a vertical rod is arranged around the top surface of the workbench. A bottom mold is arranged on the front side of the workbench to rotate through a rotating shaft, and one end of the rotating shaft of the bottom mold is connected to the output end of the motor;

[0011] The hydraulic cylinder is symmetrically arranged at the rear side of the workbench, and the telescopic end of the hydraulic cylinder is arranged upward;

[0012] The top mold is slidably arranged between the four vertical rods of the workbench and connected to the telescopic ends of the hydraulic cylinder;

[0013] A screw feeder is arranged on the base, and a material port of the screw feeder is on the same side as the bottom mold;

[0014] A conveyor is arranged on the front side of the base, and a detection part for detecting plastic products is arranged on the end of the conveyor;

[0015] The demoulding part is arranged on the bottom mold, and the demoulding part includes a contact plate arranged on the vertical rod on the front side of the workbench. The bottom mold has a cavity inside, and a piston rod that contacts and cooperates with the contact plate is slidably arranged in the cavity. A ring is fixedly arranged on the lower side of the cavity. A push rod that passes through the bottom end of the bottom mold is slidably arranged on the ring to push the plastic product to be demoulded, and an elastic member I is arranged between the push rod and the ring.

[0016] Preferably, the detection part includes electric push rods arranged on both sides of the conveyor, the telescopic ends of the electric push rods face upward and are connected to a bracket, the bottom of the bracket is connected to a detection platform, the bottom of the detection platform is provided with a sealing ring for fitting and sealing the plastic product, and the top of the detection platform is provided with a gas flow controller and an air pump, a delivery pipe for delivering gas is connected between the air inlet of the air pump and the air outlet of the gas flow controller, and the air outlet of the air pump passes through the detection platform, and a pressure gauge for detecting the air pressure of the plastic product is also provided on the detection platform.

[0017] Preferably, a baffle is also included, and the baffle is arranged on the detection platform for limiting the movement of the detected plastic product.

[0018] Preferably, the screw feeder is provided with an auxiliary mechanism for assisting in discharging, the auxiliary mechanism includes a mounting plate arranged on the screw feeder, the mounting plate is adjacent to the material port of the screw feeder, and support rods are symmetrically slidably arranged on both sides of the mounting plate, and a tangent line that is in contact with the material port of the screw feeder is arranged between the two support rods for cutting the residual plastic on the material port of the screw feeder.

[0019] Preferably, a heating plate is also included. A heating plate is also arranged between the two support rods. When the heating plate moves with the support rods, it can be attached to the material opening of the screw feeder to melt the residual plastic.

[0020] Preferably, a pushing mechanism for pushing the tangent to move is provided on the top mold, and the pushing mechanism includes a moving frame slidably arranged between the vertical poles on the rear side of the workbench, and elastic members II are arranged between the moving frame and the two vertical poles, and a plate body is symmetrically extended on the front side of the moving frame, and there is a spacing between the plate body and the top end of the moving frame, and the plate bodies on both sides are in contact with the top mold, and sliding sleeves are rotatably arranged at both ends of the bottom of the moving frame, and an extension rod is slidably arranged on the sliding sleeve, and the extension rods are respectively connected to the support rods on the same side.

[0021] Preferably, the extension rod is inclined backward and upward relative to the top surface of the base, suitable for pushing the tangent line to move downward.

[0022] Preferably, the top surface of the workbench is adapted to the contact surface between the bottom mold so as to facilitate the rotational fit of the bottom mold.

[0023] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects:

[0024] 1. The present invention utilizes a screw feeder to realize the automatic supply of plastic raw materials, thereby achieving the automation of plastic raw material supply, and then extrusion is performed through the coordinated action of the top mold and the bottom mold to realize the automatic molding of plastic products. The molded plastic products are automatically demoulded by the piston rod and the contact plate. In addition, a special detection unit is set up and an airtight pressure detection technology is adopted to implement strict quality control and detection of plastic products. This series of processes, from demoulding, discharging to final detection, have realized integrated operation, which not only significantly improves production efficiency and reduces the cost of manual operation, but also ensures the standardization and continuity of the production process.

[0025] 2. The detection part of the present invention fills gas into the interior of the plastic product through the coordinated work of the gas flow controller and the air pump, and intuitively detects the air tightness of the plastic product by precisely controlling the gas flow and simultaneously monitoring the changes in the pressure gauge pointer. This method not only improves the accuracy of detection, but also realizes the integration of precise detection and quality control operations.

[0026] 3. The setting of the tangent line in the present invention enables the residual material on the material port of the screw feeder to be scraped off, and with the assistance of the heating plate, the residual material can be removed more thoroughly, thereby avoiding the blockage of the material port of the screw feeder and ensuring the accuracy of each feeding.

[0027] 4. The present invention promotes the automatic operation of the cutting and heating plates through the linkage operation between the moving frame and the extension rod and with the help of the elastic support of the elastic member II, so that the operation of the whole device is smoother and the overall operation is effectively realized quickly and coherently. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention.

[0029] Figure 2 It is a three-dimensional structural schematic diagram of components such as a workbench, a motor and a bottom mold of the present invention.

[0030] Figure 3 It is a three-dimensional structural cross-sectional view of each component of the demoulding part of the present invention.

[0031] Figure 4 It is a three-dimensional structural schematic diagram of some components of the detection unit of the present invention.

[0032] Figure 5 It is a three-dimensional structural schematic diagram of the gas flow controller, delivery pipe, air pump and other components of the present invention.

[0033] Figure 6 It is a three-dimensional structural schematic diagram of components such as the testing platform, pressure gauge and sealing ring of the present invention.

[0034] Figure 7 It is a three-dimensional structural schematic diagram of the plastic product, sealing ring, baffle and other components of the present invention.

[0035] Figure 8 It is a three-dimensional structural schematic diagram of the spiral feeder, mounting plate, support rod and tangent line of the present invention.

[0036] Fig. 9 It is a schematic diagram of the three-dimensional structure of the support rod, tangent line and heating plate of the present invention.

[0037] Fig.10 It is a three-dimensional structural schematic diagram of various components of the pushing mechanism of the present invention.

[0038] The markings in the accompanying drawings provided by the present invention are: 100-plastic product, 1-base, 2-workbench, 21-motor, 22-bottom mold, 221-cavity, 3-hydraulic cylinder, 4-top mold, 5-screw feeder, 6-conveyor, 7-demolding part, 71-contact plate, 72-piston rod, 73-ring, 74-top rod, 75-elastic part I, 8-detection part, 81-electric push rod, 82-bracket, 83-detection table, 84-gas flow controller, 85-delivery pipe, 86-air pump, 87-pressure gauge, 88-sealing ring, 89-baffle, 9-auxiliary mechanism, 91-mounting plate, 92-support rod, 93-tangent, 94-heating plate, 10-pushing mechanism, 101-moving frame, 102-elastic part II, 103-sliding sleeve, 104-extension rod. DETAILED DESCRIPTION

[0039] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0040] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] Embodiment 1: A plastic product forming device, such as Figure 1-Figure 3 As shown, including:

[0042] The base 1 is a mounting carrier for the device components, and a motor 21 is fixedly mounted on the left side of the base 1;

[0043] The workbench 2 is arranged on the top of the base 1. The top surface of the workbench 2 is inclined forward, and a vertical pole is arranged around the top surface. A bottom mold 22 is arranged on the front side of the workbench 2 through a rotating shaft. The contact surface between the top surface of the workbench 2 and the bottom mold 22 is adapted to facilitate the rotation and fit of the bottom mold 22, ensuring the stable placement of the bottom mold 22, so as to facilitate the placement of plastic raw materials and the discharge of plastic products 100. The left end of the rotating shaft of the bottom mold 22 is connected to the output end of the motor 21, so that the rotation operation of the bottom mold 22 is automated, and the tilting setting of the workbench 2 makes the flipping operation of the bottom mold 22 easier;

[0044] The hydraulic cylinder 3 is symmetrically arranged at the rear side of the workbench 2, and the telescopic end of the hydraulic cylinder 3 is arranged upward;

[0045] The top mold 4 is slidably disposed between the four vertical rods of the workbench 2 and connected to the telescopic ends of the hydraulic cylinder 3, so that the top mold 4 can be automatically moved down to fit with the bottom mold 22, thereby completing the extrusion molding operation of the plastic product 100;

[0046] The screw feeder 5 is arranged on the base 1, and the feed port of the screw feeder 5 is on the same side as the bottom mold 22, so that the softened plastic ejected from the screw feeder 5 can accurately fall onto the screw feeder 5, and because of the viscosity of the softened plastic itself, it adheres to the bottom mold 22 and will not slide due to tilting;

[0047] The conveyor 6 is arranged on the front side of the base 1. A detection part 8 for detecting the plastic product 100 is arranged at the end of the conveyor 6, so that the molded plastic product 100 can be automatically conveyed to the detection part 8 for quality detection;

[0048] The demoulding part 7 is arranged on the bottom mold 22. The demoulding part 7 includes a contact plate 71 arranged between two vertical rods on the front side of the workbench 2. The bottom end of the contact plate 71 extends downward. The bottom mold 22 has a cavity 221 inside. Taking the flipped bottom mold 22 as the standard, the cavity 221 presents a corner channel from front to bottom, so that it has two through ports consisting of a side port and a bottom port. A piston rod 72 that contacts and cooperates with the contact plate 71 is slidably arranged in the cavity 221. The piston rod 72 is placed in the front part of the cavity 221 and passes through the side port to contact the contact plate 71. A ring 73 is fixedly installed on the lower part of the cavity 221. The ring 73 passes through a sliding A push rod 74 passing through the bottom end of the bottom mold 22 is provided, so that the push rod 74 can pass through the bottom port of the cavity 221 to facilitate demoulding of the plastic product 100. An elastic member I75 is provided between the push rod 74 and the collar 73. In this embodiment, the elastic member I75 is a spring, which can provide elastic support for the movement of the push rod 74. Due to the movement of the piston rod 72, the internal space of the cavity 221 is squeezed to form physical pressure, thereby synchronously pushing the push rod 74 out, thereby realizing demoulding of the plastic product 100 attached to the bottom mold 22, achieving automated demoulding, and compared with the manual demoulding method, the overall operation is safer and more convenient.

[0049] like Figure 1 , Figure 4-Figure 7As shown, the detection unit 8 includes two groups of electric push rods 81 respectively arranged on the left and right sides of the conveyor 6, the number of each group of electric push rods 81 is two, the telescopic ends of the four electric push rods 81 are all arranged upward and are commonly connected to a bracket 82, so that the four corners of the bracket 82 can be supported, and the bottom of the bracket 82 is connected to a detection table 83, the detection table 83 is in the shape of a cover with an upper closed cover, and the bottom of the detection table 83 is provided with a sealing ring 88 for fitting and sealing the plastic product 100. The cover-shaped detection table 83 is used in conjunction with the sealing ring 88 to more effectively ensure the sealing of the plastic product 100 during the detection process, thereby making the airtight detection of the plastic product 100 more accurate, and a gas flow controller 84 and an air pump 86 are arranged on the top of the detection table 83, and a delivery pipe 85 for delivering gas is connected between the air inlet of the air pump 86 and the air outlet of the gas flow controller 84, and the air pump 86 The gas outlet passes through the test platform 83, and a pressure gauge 87 for detecting the air pressure of the plastic product 100 is also arranged on the test platform 83. The gas flow controller 84 plays a core role in the detection process of the plastic product 100. It can accurately control the gas flow to ensure the uniformity and controllability of the internal inflation process of the plastic product 100. The air pump 86 is responsible for delivering the gas to the inside of the plastic product 100, and together with the gas flow controller 84 and the delivery pipe 85, forms a gas circulation channel. Here, the pressure gauge 87 can monitor and display the pressure value inside the plastic product 100 in real time, and provide intuitive pressure information. By observing the reading of the pressure gauge 87 and the movement of its pointer, it can be judged whether the plastic product 100 has reached the required pressure standard. This process is crucial to ensuring the accuracy of the test results, and helps to timely discover the airtightness problems of plastic products, thereby ensuring product quality.

[0050] like Figure 7 As shown, a baffle 89 is also included. The baffle 89 is arranged on the detection platform 83 to limit the movement of the detected plastic product 100, so as to ensure the accuracy of the detection.

[0051] When using the device, firstly, the plastic to be used is placed into the screw feeder 5, and the screw feeder 5 pushes the plastic out and drops it onto the bottom mold 22 below. Because the softened plastic is sticky, it will stick to the bottom mold 22 after contacting the bottom mold 22, so it will not fall out of the bottom mold 22. Then the hydraulic cylinder 3 can be started, and the hydraulic cylinder 3 drives the top mold 4 to move down and slide downward on the vertical rod on the workbench 2. Then the top mold 4 and the bottom mold 22 are attached to squeeze the plastic. After the plastic is extruded and formed, the hydraulic cylinder 3 drives the top mold 4 to reset, and then it is started. The motor 21 drives the bottom mold 22 to rotate forward on the workbench 2, so that the molded plastic product 100 is turned over together with the bottom mold 22. At this time, the plastic mold is still attached to the bottom mold 22. As the bottom mold 22 rotates, the piston rod 72 gradually approaches the contact plate 71 and contacts it, thereby pushing the piston rod 72 to slide in the cavity 221, thereby squeezing the internal space of the cavity 221 to pressurize and simultaneously push the ejector rod 74 downward, and the elastic member I 75 is deformed accordingly, and then the ejector rod 74 is exposed from the bottom mold 22 and pushes the plastic product 100 to fall off. The fallen plastic product 100 will fall onto the conveyor 6 below. After the plastic product 100 moves to the conveyor 6, it will be blocked by the baffle 89, and then the electric push rod 81 will be started. The electric push rod 81 will drive the bracket 82 and the detection table 83 to move down. The detection table 83 will move down to fit the plastic product 100, and will be close to the opening of the plastic product 100 through the sealing ring 88. Then, gas will be supplied to the gas flow controller 84. The gas will flow through the gas flow controller 84 and then enter the delivery pipe 85. Finally, the plastic product 100 will be filled into the interior through the air pump 86. The pointer of the pressure gauge 87 will be synchronized. Changes occur, and then the gas delivery volume is controlled by the gas flow controller 84. After the gas is filled to a certain amount, the air intake can be stopped, and then the changes in the pointer on the pressure gauge 87 are observed. If the pointer remains unchanged, the plastic product 100 has no airtightness problem and is a qualified product, while the pointer presented by the unqualified product will change in amplitude, thereby judging that the plastic product 100 has an airtightness problem and is an unqualified product. Then the electric push rod 81 drives the entire component to reset, and the baffle 89 is out of contact with the plastic product 100, and then the unqualified plastic product 100 can be taken out.

[0052] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 8 and Fig. 9As shown, the screw feeder 5 is provided with an auxiliary mechanism 9 for assisting in discharging, and the auxiliary mechanism 9 includes a mounting plate 91 disposed on the screw feeder 5, and the mounting plate 91 is adjacent to the material port of the screw feeder 5, and symmetrical straight grooves are provided on the left and right sides of the mounting plate 91, and a support rod 92 is slidably provided on the straight grooves of the mounting plate 91, and a tangent line 93 in contact with the material port of the screw feeder 5 is provided between the two support rods 92, and the tangent line 93 is a wire used in wire cutting processing, which is called an electrode wire, and is usually made of metal, and can be used to cut the residual plastic on the material port of the screw feeder 5 to avoid the accumulation of residual material, thereby improving and solving the problem of residual material blockage at the material port of the screw feeder 5.

[0053] like Fig. 9 As shown, a heating plate 94 is also included. A heating plate 94 is also arranged between the two support rods 92. The heating plate 94 has a built-in heating wire and can be operated by electronic components. This is the prior art and will not be described in detail. When the heating plate 94 moves with the support rods 92, it can be attached to the material port of the screw feeder 5 to melt the residual plastic, thereby more thoroughly removing the residual material placed at the material port to ensure the accuracy of the lower side discharge and avoid the accumulation of residual material.

[0054] like Figure 1 and Fig.10 As shown, a pushing mechanism 10 for pushing the tangent line 93 to move is provided on the top mold 4, and the pushing mechanism 10 includes a moving frame 101 slidably arranged between two uprights at the rear side of the workbench 2, and an elastic member II 102 is arranged between the moving frame 101 and the two uprights. In this embodiment, the elastic member II 102 is a spring, which can provide the necessary force for support and operation, and a plate body is symmetrically extended on the front side of the moving frame 101, and there is a gap between the plate body and the top of the moving frame 101. The plate bodies on both sides are in contact with the top mold 4, and sliding sleeves 103 are rotatably arranged at both left and right ends of the bottom of the moving frame 101, and the sliding sleeves 103 are respectively penetrated by sliding arrangements There is an extension rod 104, which is connected to the support rod 92 on the same side. The extension rod 104 is inclined backward and upward relative to the top surface of the base 1, which is suitable for pushing the tangent 93 downward. The shape formed by the cooperation of the movable frame 101, the elastic member II 102 and the extension rod 104 is used to maintain the tension state of the elastic member II 102, so as to utilize the force provided by the reset of the elastic member II 102 to maintain the push for the movable frame 101 to move downward, thereby cooperating with the movement of the sliding sleeve 103 on the extension rod 104 to realize the push for the tangent 93 to move downward, and achieve the effect of automatic operation of the tangent 93, thereby improving the overall continuity and efficiency of the operation of the device.

[0055] In the initial state, that is, when the top mold 4 is above the vertical rod, the sliding sleeve 103 is in the middle of the extension rod 104, and the elastic member II 102 remains in a stretched state. As the top mold 4 moves downward to fit with the bottom mold 22, the top mold 4 moving downward will synchronously keep in contact with the upper plate of the moving frame 101, and the stretched elastic member II 102 will gradually return to its original position and push the moving frame 101 to move downward synchronously. At the same time, the sliding sleeve 103 and the extension rod 104 slide relative to each other, and the sliding sleeve 103 follows the inclined surface trajectory of the extension rod 104 and approaches the upper end of the extension rod 104, thereby the extension rod 104 drives the support rod 92 Move downward, the support rod 92 slides downward on the mounting plate 91, and drives the tangent line 93 to fit the material port of the spiral feeder 5, thereby cutting off the residual plastic at the material port, and then the heating plate 94 will also move downward synchronously with the movement of the support rod 92 to fit the material port, and use its heat to melt the residual material on the material port to avoid blockage caused by the accumulation of residual material at the material port, and then wait for the top mold 4 to move up, which will drive the tangent line 93 and move up to reset, and then scrape the material port for the second time to facilitate the use of the plastic discharge next time, and then the top mold 4 will move to the initial vertical rod position, and the elastic member II 102 will resume the stretched state for subsequent use.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A plastic product forming device, characterized in that: include: A base (1) is a mounting carrier for the device components, and a motor (21) is mounted on one side of the base (1); A workbench (2) is arranged on the top of the base (1), the top surface of the workbench (2) is inclined forward, and a vertical rod is arranged on each side of the top surface of the workbench (2). A bottom mold (22) is rotatably arranged on the front side of the workbench (2) via a rotating shaft, and one end of the rotating shaft of the bottom mold (22) is connected to the output end of the motor (21); The hydraulic cylinder (3) is symmetrically arranged on the rear side of the workbench (2), and the telescopic end of the hydraulic cylinder (3) is arranged upward; A top mold (4) is slidably disposed between four vertical rods of the workbench (2) and is connected to the telescopic ends of the hydraulic cylinder (3); A screw feeder (5) is arranged on the base (1), and a feed opening of the screw feeder (5) is on the same side as the bottom mold (22); A conveyor (6) is arranged on the front side of the base (1), and a detection part (8) for detecting the plastic product (100) is arranged at the end of the conveyor (6); A demoulding portion (7) is arranged on the bottom mold (22), the demoulding portion (7) comprises a contact plate (71) arranged on a vertical rod on the front side of the workbench (2), the bottom mold (22) has a cavity (221) inside, a piston rod (72) is slidably arranged in the cavity (221) and is in contact with the contact plate (71), a collar (73) is arranged on the lower side of the cavity (221), a push rod (74) is slidably arranged on the collar (73) and passes through the bottom end of the bottom mold (22) to push the plastic product (100) to be demoulded, and an elastic member I (75) is arranged between the push rod (74) and the collar (73); The detection part (8) comprises electric push rods (81) arranged on both sides of the conveyor (6), the telescopic ends of the electric push rods (81) facing upward and being connected to a bracket (82), the bottom of the bracket (82) being connected to a detection platform (83), the bottom of the detection platform (83) being provided with a sealing ring (88) for fitting and sealing the plastic product (100), and the top of the detection platform (83) being provided with a gas flow controller (84) and an air pump (86), a delivery pipe (85) for delivering gas being connected between the air inlet of the air pump (86) and the air outlet of the gas flow controller (84), and the air outlet of the air pump (86) passing through the detection platform (83), and a pressure gauge (87) for detecting the air pressure of the plastic product (100) being also provided through the detection platform (83); The screw feeder (5) is provided with an auxiliary mechanism (9) for assisting in discharging materials. The auxiliary mechanism (9) comprises a mounting plate (91) arranged on the screw feeder (5). The mounting plate (91) is adjacent to a material port of the screw feeder (5), and support rods (92) are symmetrically slidably arranged on both sides of the mounting plate (91). A tangent line (93) that is in contact with the material port of the screw feeder (5) is arranged between the two support rods (92) and is used to cut off residual plastic on the material port of the screw feeder (5); The top mold (4) is provided with a pushing mechanism (10) for pushing the tangent line (93) to move. The pushing mechanism (10) comprises a moving frame (101) slidably arranged between the vertical poles at the rear side of the workbench (2). An elastic member II (102) is arranged between the moving frame (101) and the two vertical poles. A plate body is symmetrically extended from the front side of the moving frame (101). There is a gap between the plate body and the top of the moving frame (101). The plate bodies on both sides are in contact with the top mold (4). Sliding sleeves (103) are rotatably arranged at both ends of the bottom of the moving frame (101). An extension rod (104) is slidably arranged on the sliding sleeve (103). The extension rod (104) is respectively connected to the support rod (92) on the same side.

2. A plastic product forming device according to claim 1, characterized in that: It also includes a baffle (89), which is arranged on the detection platform (83) and is used to limit the movement of the detected plastic product (100).

3. A plastic product forming device according to claim 2, characterized in that: It also includes a heating plate (94) disposed between the two support rods (92). When the heating plate (94) moves with the support rods (92), it can come into contact with the material opening of the screw feeder (5) to melt the residual plastic.

4. A plastic product forming device according to claim 3, characterized in that: The extension rod (104) is inclined backward and upward relative to the top surface of the base (1), and is suitable for pushing the tangent line (93) to move downward.

5. A plastic product forming device according to claim 4, characterized in that: The top surface of the workbench (2) and the contact surface between the bottom mold (22) are matched to facilitate the rotation and fit of the bottom mold (22).

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