Plastic mold for precise plastic part of automobile

Abstract

The invention relates to the technical field of automobile precision plastic part machining, and discloses a plastic mold for automobile precision plastic parts, which comprises a shell, a piston ring is slidably connected to the inner wall of the shell, a sliding mold is fixedly connected to the inner wall of the piston ring, and a plurality of positioning rods are fixedly connected to the top of the sliding mold. A plurality of positioning rods are arranged in the shell, positioning molds are slidably connected to the outer walls of the positioning rods, before use, the shell is fixed to the needed position, then it is ensured that the positioning molds are in a fixed state, then a feeding pipe is connected with the side walls of the positioning molds in a penetrating mode, and finally a power source of the electric telescopic rods is switched on. Through the application of the components, a layer of air film exists between the finished product and the sliding mold when the push rod I is pushed outwards, so that the contact surface between the finished product and the sliding mold is reduced, and the resistance during demolding of the push rod I is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive precision plastic part processing, and specifically to a plastic mold for automotive precision plastic parts. Background Art

[0002] A mold is various dies and tools used in industrial production to obtain the required products by methods such as injection molding, blow molding, extrusion, die casting, or forging, smelting, stamping, etc. In recent years, with the rapid development of the plastic industry and the continuous improvement of the strength and precision of general and engineering plastics, the application scope of plastic molds has been continuously expanding. In the field of automotive production, most of the precision parts are injection molded with plastics. A plastic mold is an abbreviation for a combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes of the convex and concave dies and the auxiliary molding system of the mold can process a series of plastic parts with different shapes and sizes. When producing and processing automotive precision plastic parts, a plastic mold is required.

[0003] Among them, since most automotive precision parts are complex polyhedrons, even if an anti-sticking agent is sprayed inside the mold, when the parts are demolded, due to multi-faceted contact, the resistance during demolding will still increase. If a push rod type demolding is used, the single area of the finished product will bear a large pressure, causing small deformations of the finished product. In view of the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a plastic mold for automotive precision plastic parts, including a housing. A piston ring is slidably connected to the inner wall of the housing. A sliding mold is fixedly connected to the inner wall of the piston ring. A plurality of positioning rods are fixedly connected to the top of the sliding mold. A positioning mold is slidably connected to the outer walls of the plurality of positioning rods. It further includes:

[0005] A pressure mechanism, fixedly connected to the side wall of the housing, for driving the operation of the device;

[0006] An auxiliary mechanism, located inside the sliding mold, for converting the high-pressure gas inside the housing into an upward thrust;

[0007] A blocking mechanism, fixedly connected to the inner wall of the auxiliary mechanism, for transmitting the pressure generated by the auxiliary mechanism;

[0008] Among them, before use, first fix the housing in the required position, fix the positioning mold on an external support, and then turn on the power supply of the pressure mechanism.

[0009] Preferably, the pressure mechanism includes:

[0010] An intake assembly, which is fixedly connected to the inner wall of the housing and is used to drive the sliding die to slide up and down along the inner wall of the housing;

[0011] A driving assembly, which is fixedly connected to the inner wall of the sliding die and is used to push the finished product at the top of the sliding die outwards;

[0012] Among them, when the equipment is running, the intake assembly will force the sliding die to slide up and down along the inner wall of the housing, and compress the gas inside the housing during the downward movement.

[0013] Preferably, the auxiliary mechanism includes:

[0014] A control assembly, which is fixedly connected to the inner wall of the sliding die and is used to receive the compressed gas inside the housing and generate an outward thrust;

[0015] A pressure assembly, which is fixedly arranged on the inner wall of the control assembly;

[0016] Among them, after the gas inside the housing is compressed, the thrust generated by the compressed gas at this time will act on the position of the pressure assembly, causing the pressure assembly to push the blocking mechanism to move.

[0017] Preferably, the blocking mechanism includes:

[0018] A linkage assembly, which is fixedly arranged on the inner wall of the pressure mechanism;

[0019] A plugging assembly, which is fixedly arranged at the bottom of the control assembly;

[0020] Among them, the linkage assembly is used to receive the thrust generated by the pressure assembly, so that the compressed gas inside the housing is ejected outwards through the linkage assembly, and is blocked in time after the gas flows through.

[0021] Preferably, the intake assembly includes a one-way valve connected through the side wall of the housing, an electric telescopic rod is fixedly connected to the top of the housing, and a support frame is fixedly connected to the outer wall of the electric telescopic rod;

[0022] Among them, after the electric telescopic rod is powered on, it will drive the sliding die to slide up and down along the inner wall of the housing.

[0023] Preferably, the driving assembly includes a threaded housing fixedly connected to the inner wall of the sliding die, a push rod one is slidably connected to the inner wall of the threaded housing, a spring one is fixedly connected to the outer wall of the push rod one, and the other end of the push rod one is fixedly connected to the bottom of the fixed frame;

[0024] Among them, one end of the top of the push rod one is flush with the outer wall of the sliding die. When the sliding die moves downwards, the push rod one will move downwards synchronously and finally contact the top of the support frame.

[0025] Preferably, the control component includes a threaded tube fixedly connected to the inner cavity of the sliding die. A threaded housing is threadedly connected to the inner wall of the threaded tube, and a blocking block is fixedly connected to the inner wall of the threaded housing.

[0026] The position of the threaded tube can be installed in various areas of the flat position on the inner wall of the cavity of the sliding die, as long as the seal between the threaded tube and the blocking block is ensured.

[0027] Preferably, the pressure component includes a piston block slidably connected to the inner wall of the blocking block. A fixing plate is fixedly connected to the inner wall of the piston block. A second spring is fixedly connected to the bottom of the fixing plate, and the end of the second spring away from the fixing plate is fixedly connected to the top of the piston block. A second push rod is fixedly connected to the top of the piston block, and a ventilation groove is formed in the inner wall of the blocking block.

[0028] When the piston block is pressed upward, the piston block will drive the second push rod to move upward synchronously, and force the second spring to contract and deform.

[0029] Preferably, the linkage component includes a rotating column fixedly connected to the inner wall of the threaded housing. A support rod is rotatably connected to the outer wall of the rotating column. A pulling frame is rotatably connected to the top of the support rod. A rotating plate is rotatably connected to the inner wall of the threaded housing. An arc-shaped blocking block is fixedly connected to the side wall of the rotating plate, and an arc-shaped through-hole groove is formed in the outer wall of the sliding die.

[0030] When the second push rod moves upward, it will force the rotating plate to rotate downward around the connection point through the support rod and the pulling frame, so that the arc-shaped blocking block is separated from the arc-shaped through-hole groove, and the high-pressure gas can be discharged outward through the arc-shaped through-hole groove and act on the inner wall of the finished product.

[0031] Preferably, the blocking component includes a horn tube connected through the bottom of the threaded housing. A sliding hollow tube is slidably connected to the inner wall of the threaded housing, and a blocking circular plate is fixedly connected to the outer wall of the sliding hollow tube.

[0032] Normally, the outer wall of the blocking circular plate is separated from the inner wall of the horn tube. When the gas inside the housing communicates with the external environment, the blocking circular plate will be pressed to slide and block the inner wall of the horn tube.

[0033] The present invention has the following beneficial effects:

[0034] (1) As the electric telescopic rod continuously contracts, the first spring will exceed the outer wall of the sliding die to perform the pushing process on the finished product. Through the application of the above components, when the first push rod is pushed outward, there is an air film between the finished product and the sliding die, reducing the contact surface between the finished product and the sliding die and reducing the resistance when the first push rod demolds.

[0035] (2) When the high-pressure gas is discharged outward, the high-pressure gas will pass throughFigure 8 In G, when the air flow passes through the above positions, the flowing air flow will drive the blocking circular plate to move upward. Eventually, the blocking circular plate will bend and block against the inner wall of the horn-shaped pipe, restricting the gas flow. Through the application of the above components, it can effectively prevent that after the gas is discharged outward, due to the air circulation, the pressure between the gaps drops at this time, and finally the gaps shrink, resulting in an increase in the contact surface between the sliding die and the inner wall of the finished product, affecting the demoulding effect.

[0036] (3) Through the application of the arc-shaped blocking block and the arc-shaped through-hole groove in the present invention, as Figure 10 shown, when the arc-shaped blocking block rotates upward, it will closely adhere to the inner wall of the arc-shaped through-hole groove. When the arc-shaped blocking block completely blocks the inner wall of the arc-shaped through-hole groove, the bottom of the rotating plate will also contact the inner wall of the sliding die, effectively preventing the molten plastic from falling onto the inner wall of the sliding die through the gaps in the arc-shaped through-hole groove when the plastic melt enters the plastic cavity, affecting the use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0038] Figure 1 is a schematic cross-sectional view of the overall structure of the present invention;

[0039] Figure 2 is a schematic view of the overall structure of the present invention;

[0040] Figure 3 is a schematic cross-sectional view of the pressure mechanism of the present invention;

[0041] Figure 4 is a schematic cross-sectional view of the air intake component of the present invention;

[0042] Figure 5 is a schematic cross-sectional view of the drive component of the present invention;

[0043] Figure 6 is a schematic cross-sectional view of the control component of the present invention;

[0044] Figure 7 is a schematic cross-sectional view of the pressure component of the present invention;

[0045] Figure 8 is for the present invention Figure 7 is an enlarged schematic view of A in the present invention;

[0046] Figure 9 is a schematic cross-sectional view of the linkage component of the present invention;

[0047] Figure 10 Schematic cross-sectional view of the working state of the linkage component of the present invention.

[0048] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0049] In the figure: 1. Pressure mechanism; 11. Intake component; 12. Driving component; 13. Outer shell; 14. Piston ring; 15. Sliding die; 16. Positioning rod; 17. Positioning die; 111. Check valve; 112. Electric telescopic rod; 113. Support frame; 121. Fixed frame; 122. Push rod 1; 123. Spring 1; 2. Auxiliary mechanism; 21. Control component; 22. Pressure component; 211. Threaded pipe; 212. Threaded outer shell; 213. Blocking block; 221. Piston block; 222. Fixed plate; 223. Spring 2; 224. Push rod 2; 225. Vent groove; 3. Blocking mechanism; 31. Linkage component; 32. Sealing component; 311. Rotating column; 312. Support rod; 313. Pulling frame; 314. Rotating plate; 315. Arc-shaped blocking block; 316. Arc-shaped through-hole groove; 321. Horn pipe; 322. Sliding hollow pipe; 323. Blocking circular plate. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] Embodiment 1, please refer to Figures 1 - 7 , the present invention is a plastic mold for automotive precision plastic parts, including an outer shell 13. A piston ring 14 is slidably connected to the inner wall of the outer shell 13. A sliding die 15 is fixedly connected to the inner wall of the piston ring 14. A plurality of positioning rods 16 are fixedly connected to the top of the sliding die 15. A positioning die 17 is slidably connected to the outer walls of the plurality of positioning rods 16. It further includes:

[0052] A pressure mechanism 1, which is fixedly connected to the side wall of the outer shell 13 and is used to drive the operation of the device;

[0053] An auxiliary mechanism 2, which is inside the sliding die 15 and is used to convert the high-pressure gas inside the outer shell 13 into an upward thrust;

[0054] A blocking mechanism 3, which is fixedly connected to the inner wall of the auxiliary mechanism 2 and is used to transmit the pressure generated by the auxiliary mechanism 2;

[0055] Among them, before use, first fix the outer shell 13 at the required position, fix the positioning die 17 on the external support, and then turn on the power supply of the pressure mechanism 1.

[0056] The pressure mechanism 1 includes:

[0057] An air intake component 11, which is fixedly connected to the inner wall of the outer shell 13 and is used to drive the sliding die 15 to slide up and down along the inner wall of the outer shell 13;

[0058] A driving component 12, which is fixedly connected to the inner wall of the sliding die 15 and is used to push the finished product at the top of the sliding die 15 outwards;

[0059] Among them, when the equipment is running, the air intake component 11 will force the sliding die 15 to slide up and down along the inner wall of the outer shell 13, and compress the gas inside the outer shell 13 during the downward movement;

[0060] Before use, first fix the outer shell 13 at the required position, then ensure that the positioning die 17 is in a fixed state, and then connect the feeding pipe through the side wall of the positioning die 17. The feeding pipe injects the plastic melt into the inner cavity of the die and enters the cooling process.

[0061] The auxiliary mechanism 2 includes:

[0062] A control component 21, which is fixedly connected to the inner wall of the sliding die 15 and is used to receive the compressed gas inside the outer shell 13 and generate an outward thrust;

[0063] A pressure component 22, which is fixedly arranged on the inner wall of the control component 21;

[0064] Among them, after the gas inside the outer shell 13 is compressed, the thrust generated by the compressed gas at this time will act on the pressure component 22, causing the pressure component 22 to push the blocking mechanism 3 to move.

[0065] The blocking mechanism 3 includes:

[0066] A linkage component 31, which is fixedly arranged on the inner wall of the pressure mechanism 1;

[0067] A plugging component 32, which is fixedly arranged at the bottom of the control component 21;

[0068] Among them, the linkage component 31 is used to receive the thrust generated by the pressure component 22, so that the compressed gas inside the outer shell 13 is ejected outwards through the linkage component 31, and is blocked in time after the gas flows through.

[0069] Example 2, please refer to Figures 3 - 10, the present invention is a plastic mold for precision plastic parts of an automobile. On the basis of Example 1, the intake assembly 11 includes a one-way valve 111 connected through the side wall of the housing 13. The top of the housing 13 is fixedly connected with an electric telescopic rod 112, and a support frame 113 is fixedly connected to the outer wall of the electric telescopic rod 112;

[0070] Among them, after the electric telescopic rod 112 is powered on, it will drive the sliding mold 15 to slide up and down along the inner wall of the housing 13.

[0071] The driving assembly 12 includes a threaded housing 212 fixedly connected to the inner wall of the sliding mold 15. A push rod 122 is slidably connected to the inner wall of the threaded housing 212. A first spring 123 is fixedly connected to the outer wall of the push rod 122. The other end of the push rod 122 is fixedly connected to the bottom of the fixed frame 121;

[0072] Among them, one end of the top of the push rod 122 is flush with the outer wall of the sliding mold 15. When the sliding mold 15 moves downward, the push rod 122 will move downward synchronously and finally contact the top of the support frame 113.

[0073] The control assembly 21 includes a threaded tube 211 fixedly connected to the inner cavity of the sliding mold 15. A threaded housing 212 is threadedly connected to the inner wall of the threaded tube 211. A blocking block 213 is fixedly connected to the inner wall of the threaded housing 212;

[0074] Among them, the position of the threaded tube 211 can be installed in various areas of the flat position of the inner cavity wall of the sliding mold 15, as long as it is ensured that there is sufficient sealing between the threaded tube 211 and the blocking block 213;

[0075] The application of the arc-shaped blocking block 315 and the arc-shaped through-hole groove 316 is as Figure 10 shown. When the arc-shaped blocking block 315 rotates upward, it will closely adhere to the inner wall of the arc-shaped through-hole groove 316. When the arc-shaped blocking block 315 completely blocks the inner wall of the arc-shaped through-hole groove 316, the bottom of the rotating plate 314 will also contact the inner wall of the sliding mold 15, effectively preventing the molten plastic from falling into the inner wall of the sliding mold 15 through the gap of the arc-shaped through-hole groove 316 when the molten plastic enters the plastic cavity, affecting the use of the equipment.

[0076] The pressure assembly 22 includes a piston block 221 slidably connected to the inner wall of the blocking block 213. A fixing plate 222 is fixedly connected to the inner wall of the piston block 221. A second spring 223 is fixedly connected to the bottom of the fixing plate 222. The end of the second spring 223 away from the fixing plate 222 is fixedly connected to the top of the piston block 221. A push rod 224 is fixedly connected to the top of the piston block 221. An air vent groove 225 is opened in the inner wall of the blocking block 213;

[0077] Among them, when the piston block 221 is pressed upward, the piston block 221 will drive the second push rod 224 to move upward synchronously, and force the second spring 223 to generate a contraction deformation;

[0078] The electric telescopic rod 112 generates a contraction force, forcing the sliding die 15 to slide downward. At this time, the sliding die 15 and the piston ring 14 will enter the inner wall of the outer shell 13, presenting a state as shown in Figure 1 . At this time, the sliding die 15 and the piston ring 14 will form a complete sealing plate, squeezing the gas inside the outer shell 13. Appropriately, the gas inside the outer shell 13 is compressed into high-pressure gas, and the high-pressure gas will generate a thrust in all directions. This thrust will force the piston block 221 to slide upward along the inner wall of the blocking block 213 and push the second push rod 224 to move upward synchronously.

[0079] The linkage component 31 includes a rotating column 311 fixedly connected to the inner wall of the threaded outer shell 212. A support rod 312 is rotatably connected to the outer wall of the rotating column 311. The top of the support rod 312 is rotatably connected to a pulling frame 313. A rotating plate 314 is rotatably connected to the inner wall of the threaded outer shell 212. An arc-shaped blocking block 315 is fixedly connected to the side wall of the rotating plate 314. An arc-shaped through-hole groove 316 is formed on the outer wall of the sliding die 15;

[0080] Among them, when the second push rod 224 moves upward, it will force the rotating plate 314 to rotate downward around the connection point through the support rod 312 and the pulling frame 313, so that the arc-shaped blocking block 315 is separated from the arc-shaped through-hole groove 316, and the high-pressure gas can be discharged outward through the arc-shaped through-hole groove 316 and act on the inner wall of the finished product;

[0081] Such as Figure 9 . The upward-moving second push rod 224 will push the support rod 312 to rotate around the rotating column 311 and drive the pulling frame 313 to move downward. The pulling frame 313 will drive the rotating plate 314 to rotate downward around the connection point, so that the arc-shaped blocking block 315 moves away from the arc-shaped through-hole groove 316. Finally, the high-pressure gas sprays outward through the arc-shaped through-hole groove 316 and finally acts on the inner wall of the finished product. During this process, the sliding die 15 will drive the first push rod 122 to move downward synchronously and contact the top of the support frame 113, restricting the movement of the first push rod 122. As the electric telescopic rod 112 continues to contract, the first spring 123 will exceed the outer wall of the sliding die 15 and perform the pushing process on the finished product. Through the application of the above components, when the first push rod 122 is pushed outward, there is an air film between the finished product and the sliding die 15, reducing the contact surface between the finished product and the sliding die 15.

[0082] The plugging assembly 32 includes a horn tube 321 connected through the bottom of the threaded housing 212. A sliding hollow tube 322 is slidably connected to the inner wall of the threaded housing 212, and a blocking circular plate 323 is fixedly connected to the outer wall of the sliding hollow tube 322;

[0083] Among them, the outer wall of the blocking circular plate 323 and the inner wall of the horn tube 321 are in a separated state under normal conditions. When the gas inside the housing 13 communicates with the external environment, the blocking circular plate 323 will be pressured to slide and block the inner wall of the horn tube 321;

[0084] Utilizing the characteristic that the above-mentioned high-pressure gas is discharged outward through the arc-shaped through-hole groove 316, a plugging assembly 32 is provided inside the device. Among them, as the sliding die 15 continuously moves downward, the pressure of the gas will continuously increase. When the air pressure is too high, the gas will break through the restraint between the finished product and the sliding die 15 and be discharged outward;

[0085] When the high-pressure gas is discharged outward, the high-pressure gas will pass through Figure 8 G. When the airflow passes through the above positions, the flowing airflow will drive the blocking circular plate 323 to move upward. Finally, the blocking circular plate 323 will bend and block the inner wall of the horn tube 321, restricting the flow of gas. Through the application of the above components, it is effectively prevented that after the gas is discharged outward, due to the air circulation, the pressure between the gaps drops at this time, and finally the gaps shrink, resulting in an increase in the contact surface between the sliding die 15 and the inner wall of the finished product, affecting the demoulding effect.

[0086] A specific application of this embodiment is as follows: Before use, first fix the housing 13 at the required position, then ensure that the positioning die 17 is in a fixed state, then connect the feeding pipe to the side wall of the positioning die 17 through connection, and finally turn on the power supply of the electric telescopic rod 112. The electric telescopic rod 112 will generate a thrust force to force the sliding die 15 and the positioning die 17 to be in a closed state. The feeding pipe will inject the plastic melt into the internal cavity and enter the cooling process. When the device needs to be demoulded;

[0087] The electric telescopic rod 112 generates a contraction force to force the sliding die 15 to slide downward. At this time, the sliding die 15 and the piston ring 14 will enter the inner wall of the housing 13, presenting a state as shown in Figure 1 At this time, the sliding die 15 and the piston ring 14 will form a complete sealing plate, squeezing the gas inside the housing 13. Appropriately, the gas inside the housing 13 is pressured to transform into high-pressure gas, and the high-pressure gas will generate a thrust force in all directions. This thrust force will force the piston block 221 to slide upward along the inner wall of the blocking block 213 and push the push rod two 224 to move upward synchronously, as shown in Figure 9, the upward push rod two 224 will push the support rod 312 to rotate around the rotating column 311, and drive the pulling frame 313 to move downward. The pulling frame 313 will drive the rotating plate 314 to rotate downward around the connection point, so that the arc-shaped blocking block 315 moves away from the arc-shaped through-hole groove 316. Finally, the high-pressure gas is ejected outward through the arc-shaped through-hole groove 316 and finally acts on the inner wall of the finished product. During this process, the sliding die 15 will drive the push rod one 122 to move downward synchronously and contact the top of the support frame 113 to limit the movement of the push rod one 122. As the electric telescopic rod 112 continues to contract, the first spring 123 will exceed the outer wall of the sliding die 15 and perform the pushing process on the finished product. Through the application of the above components, when the push rod one 122 is pushed outward, there is an air film between the finished product and the sliding die 15, reducing the contact surface between the finished product and the sliding die 15;

[0088] Utilizing the characteristic that the above high-pressure gas is discharged outward through the arc-shaped through-hole groove 316, a blocking component 32 is provided inside the device. Among them, as the sliding die 15 continues to move downward, the pressure of the gas will continue to increase. When the air pressure is too high, the gas will break through the restraint between the finished product and the sliding die 15 and be discharged outward;

[0089] When the high-pressure gas is discharged outward, the high-pressure gas will pass through Figure 8 G in it. When the air flow passes through the above positions, the flowing air flow will drive the blocking circular plate 323 to move upward. Finally, the blocking circular plate 323 will be bent and blocked on the inner wall of the horn pipe 321 to limit the flow of the gas. Through the application of the above components, it is effectively prevented that after the gas is discharged outward, due to the air circulation, the pressure between the gaps drops at this time, and finally the gaps shrink, resulting in an increase in the contact surface between the sliding die 15 and the inner wall of the finished product, affecting the demolding effect.

[0090] In addition, through the application of the arc-shaped blocking block 315 and the arc-shaped through-hole groove 316, as Figure 10 shown, when the arc-shaped blocking block 315 rotates upward, it will closely adhere to the inner wall of the arc-shaped through-hole groove 316. When the arc-shaped blocking block 315 completely blocks the inner wall of the arc-shaped through-hole groove 316, the bottom of the rotating plate 314 will also contact the inner wall of the sliding die 15, effectively preventing the plastic melt from falling into the inner wall of the sliding die 15 through the gap of the arc-shaped through-hole groove 316 when the plastic melt enters the plastic cavity, affecting the use of the device.

[0091] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A plastic mold for precision plastic parts of an automobile, comprising a housing (13), wherein a piston ring (14) is slidably connected to the inner wall of the housing (13), a sliding mold (15) is fixedly connected to the inner wall of the piston ring (14), a plurality of positioning rods (16) are fixedly connected to the top of the sliding mold (15), and a positioning mold (17) is slidably connected to the outer walls of the plurality of positioning rods (16), characterized in that, It also includes: A pressure mechanism (1), which is fixedly connected to the side wall of the housing (13) and is used to drive the device to operate; An auxiliary mechanism (2), which slides on the inner wall of the sliding die (15) and is used to convert the high-pressure gas inside the housing (13) into an upward thrust; A blocking mechanism (3), which is fixedly connected to the inner wall of the auxiliary mechanism (2) and is used to transmit the pressure generated by the auxiliary mechanism (2); Among them, before use, first fix the housing (13) at the required position, fix the positioning die (17) on the external support, and then turn on the power supply of the pressure mechanism (1).

2. The plastic mold for precision plastic parts of an automobile according to claim 1, characterized in that: The pressure mechanism (1) includes: An air intake assembly (11), which is fixedly connected to the inner wall of the housing (13) and is used to drive the sliding die (15) to slide up and down along the inner wall of the housing (13); A driving assembly (12), which is fixedly connected to the inner wall of the sliding die (15) and is used to push the finished product at the top of the sliding die (15) outwards; Among them, when the device is operating, the air intake assembly (11) will force the sliding die (15) to slide up and down along the inner wall of the housing (13), and compress the gas inside the housing (13) during the downward movement.

3. The plastic mold for precision plastic parts of an automobile according to claim 2, characterized in that: The auxiliary mechanism (2) includes: A control assembly (21), which is fixedly connected to the inner wall of the sliding die (15) and is used to receive the compressed gas inside the housing (13) and generate an outward thrust; A pressure assembly (22), which is fixedly arranged on the inner wall of the control assembly (21); Among them, after the gas inside the housing (13) is compressed, the thrust generated by the compressed gas will act on the position of the pressure assembly (22), causing the pressure assembly (22) to push the blocking mechanism (3) to move.

4. The plastic mold for a precision plastic part of an automobile according to claim 3, characterized in that: The blocking mechanism (3) includes: A linkage assembly (31), which is fixedly arranged on the inner wall of the pressure mechanism (1); A plugging assembly (32), which is fixedly arranged at the bottom of the control assembly (21); Among them, the linkage assembly (31) is used to receive the thrust generated by the pressure assembly (22), so that the compressed gas inside the housing (13) is ejected outwards through the linkage assembly (31), and is blocked in time after the gas flows through.

5. The plastic mold for precision plastic parts of an automobile according to claim 4, characterized in that: The air intake assembly (11) includes a one-way valve (111) connected through the side wall of the housing (13), the top of the housing (13) is fixedly connected with an electric telescopic rod (112), and a support frame (113) is fixedly connected to the outer wall of the electric telescopic rod (112); Among them, after the electric telescopic rod (112) is powered on, it will drive the sliding die (15) to slide up and down along the inner wall of the housing (13).

6. The plastic mold for precision plastic parts of an automobile according to claim 5, characterized in that: The driving component (12) includes a threaded housing (212) fixedly connected to the inner wall of the sliding die (15). A first push rod (122) is slidably connected to the inner wall of the threaded housing (212). A first spring (123) is fixedly connected to the outer wall of the first push rod (122). The other end of the first push rod (122) is fixedly connected to the bottom of the fixed frame (121). Among them, one end of the top of the first push rod (122) is flush with the outer wall of the sliding die (15). When the sliding die (15) moves downward, the first push rod (122) will move downward synchronously and finally contact the top of the support frame (113).

7. The plastic mold for precision plastic parts of an automobile according to claim 6, characterized in that: The control component (21) includes a threaded pipe (211) fixedly connected to the inner cavity of the inner wall of the sliding die (15). The threaded housing (212) is threadedly connected to the inner wall of the threaded pipe (211). A blocking block (213) is fixedly connected to the inner wall of the threaded housing (212). Among them, the position of the threaded pipe (211) can be installed in various areas of the flat position of the inner cavity wall of the sliding die (15), as long as the seal between the threaded pipe (211) and the blocking block (213) is sufficient.

8. The plastic mold for precision plastic parts of an automobile according to claim 7, characterized in that: The pressure component (22) includes a piston block (221) slidably connected to the inner wall of the blocking block (213). A fixing plate (222) is fixedly connected to the inner wall of the piston block (221). A second spring (223) is fixedly connected to the bottom of the fixing plate (222). The end of the second spring (223) away from the fixing plate (222) is fixedly connected to the top of the piston block (221). A second push rod (224) is fixedly connected to the top of the piston block (221). An air vent groove (225) is formed in the inner wall of the blocking block (213). Among them, when the piston block (221) is pressed upward, the piston block (221) will drive the second push rod (224) to move upward synchronously and force the second spring (223) to undergo a contraction deformation.

9. The plastic mold for precision plastic parts of an automobile according to claim 8, characterized in that: The linkage component (31) includes a rotating column (311) fixedly connected to the inner wall of the threaded housing (212). A support rod (312) is rotatably connected to the outer wall of the rotating column (311). A pulling frame (313) is rotatably connected to the top of the support rod (312). A rotating plate (314) is rotatably connected to the inner wall of the threaded housing (212). An arc-shaped blocking block (315) is fixedly connected to the side wall of the rotating plate (314). An arc-shaped through-hole groove (316) is formed in the outer wall of the sliding die (15). Among them, when the second push rod (224) moves upward, it will force the rotating plate (314) to rotate downward around the connection point through the support rod (312) and the pulling frame (313), so that the arc-shaped blocking block (315) is separated from the arc-shaped through-hole groove (316), and the high-pressure gas can be discharged outward through the arc-shaped through-hole groove (316) and act on the inner wall of the finished product.

10. A plastic mold for precision plastic parts of an automobile according to claim 9, characterized in that: The plugging assembly (32) includes a horn tube (321) connected through the bottom of the threaded housing (212). A sliding hollow tube (322) is slidably connected to the inner wall of the threaded housing (212), and a blocking circular plate (323) is fixedly connected to the outer wall of the sliding hollow tube (322). Among them, the outer wall of the blocking circular plate (323) and the inner wall of the horn tube (321) are in a separated state under normal conditions. When the gas inside the housing (13) communicates with the external environment, the blocking circular plate (323) will be pressed to slide and block the inner wall of the horn tube (321).

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