Rapid demolding mechanism and high-precision injection mold

Abstract

The invention relates to the technical field of rapid demolding mechanisms, and discloses a rapid demolding mechanism which comprises a mounting plate, a first lead screw, a connecting column, a demolding agent wiping roller and a second lead screw which are all arranged in an upper mold, and the mounting plate moves downwards in the upper mold through the first lead screw; and in the downward moving process, the release agent wiping roller is driven by the connecting column to enter a mold cavity of the lower mold, the release agent wiping roller is driven by the second lead screw to complete a U-shaped walking path in the mold cavity, the inner surface of the mold cavity is evenly coated with the release agent, and rapid demolding of the mold is promoted. The demolding agent wiping roller can enter the mold cavity of the lower mold, the inner surface of the mold cavity is evenly coated with the demolding agent according to the U-shaped walking path, rapid demolding of the mold is effectively promoted, the demolding efficiency and quality are improved, the overall demolding efficiency and quality are greatly improved, the influence of the demolding problem on the production takt is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rapid demoulding mechanisms, in particular to a rapid demoulding mechanism and a high-precision injection mold. Background Art

[0002] In modern manufacturing, injection molds are key equipment for molding plastic products. Their production efficiency and molding quality play a vital role in the entire production process. With the widespread application of plastic products in various fields, such as automobiles, electronics, home appliances and other industries, the performance requirements for injection molds are becoming increasingly stringent.

[0003] Traditional injection molds have many problems in the demolding process. Before plastic film is formed, a release agent is usually sprayed on the mold. The release agent is mainly used to facilitate mold demolding. However, the traditional way of applying the release agent is to manually apply the release agent. This method is not only inefficient and difficult to meet the needs of large-scale industrial production, but also due to the instability of manual operation, for example, in a U-shaped mold cavity, it is difficult to apply the release agent to some positions, and it is also difficult to ensure that the release agent is evenly distributed on the surface of the mold cavity. Uneven application of the release agent will lead to local demolding difficulties, increase the friction when the product is demolded, and easily cause the surface of the product to be scratched, deformed or even damaged, greatly affecting the appearance quality and dimensional accuracy of the product. Summary of the invention

[0004] The object of the present invention is to provide a rapid demoulding mechanism and a high-precision injection mold to solve the problems raised in the above background technology.

[0005] Technical Solution

[0006] The present invention provides the following technical solutions: a rapid demolding mechanism, comprising a mounting plate, a first lead screw, a connecting column, a demolding agent wiping roller and a second lead screw, all of which are arranged in an upper mold, wherein the mounting plate moves downward in the upper mold through the first lead screw, and during the downward movement, the demolding agent wiping roller is driven by the connecting column to enter the mold cavity of the lower mold, and the demolding agent wiping roller is driven by the second lead screw to complete a U-shaped walking path in the mold cavity, thereby evenly applying the demolding agent to the inner surface of the mold cavity and promoting rapid demolding of the mold.

[0007] Preferably, a second piston channel and a third piston channel are provided in the upper mold, a first piston block, a first push column and a first extrusion spring are provided in the second piston channel, the other end of the first push column extends into the third piston channel and drives the second push column in the third piston channel to move.

[0008] Preferably, a first rotating gear is disposed at the top end of the first lead screw, and tooth columns are disposed on the first pushing column and the second pushing column, and the first pushing column and the second pushing column are meshed and connected with the first rotating gear via the tooth columns.

[0009] Preferably, a first connecting rod is fixedly mounted on the bottom end of the first pushing column, a movable rod is arranged below the first connecting rod, a rack column is arranged on the movable rod, and a sliding through hole matching the movable rod is penetrated inside the mounting plate.

[0010] Preferably, the upper mold is further provided with a first rotating column, a fixed plate and a limit block, the first rotating column passes through the mounting plate, and the fixed plate and the limit block are both below the mounting plate.

[0011] Preferably, the outer side of the first rotating column is respectively provided with a first bevel gear, a third bevel gear and a second rotating gear, the first bevel gear and the third bevel gear are respectively located on the upper and lower sides of the mounting plate, the second rotating gear is located below the mounting plate, and the second rotating gear is meshedly connected with the rack column.

[0012] Preferably, a fixing column is fixedly installed on the side of the fixing plate, the fixing column passes through the movable rod, and a second extrusion spring is arranged on the outer side of the fixing column.

[0013] Preferably, a connecting block is provided under the mounting plate, the second lead screw is movably connected to the connecting block, and a second bevel gear is provided on the side of the connecting block, the second bevel gear is meshingly connected to the third bevel gear, a threaded block is provided on the second lead screw, and the threaded block is fixedly connected to the connecting column.

[0014] Preferably, a fixing rod is provided in the upper mold, and a guide block is fixedly connected via the fixing rod. The guide block extends into the mold cavity of the lower mold, so that the mold cavity is U-shaped. A protective plate is provided in the lower mold, and the protective plate is located above the mold cavity.

[0015] A high-precision injection mold comprises an upper mold and a lower mold, wherein the upper mold is provided with a pushing cylinder, the lower mold is provided with a first piston channel and an injection channel, the upper mold is provided with an air intake channel, the first piston channel is connected with the second piston channel through the air intake channel, and the injection channel is connected with the mold cavity.

[0016] Beneficial Effects

[0017] Compared with the prior art, the present invention provides a rapid demoulding mechanism and a high-precision injection mold, which have the following beneficial effects:

[0018] 1. In the present invention, by setting a rapid demoulding mechanism composed of components such as a mounting plate, a lead screw, a connecting column, and a demoulding agent wiping roller, the demoulding agent wiping roller can enter the mold cavity of the lower mold, and evenly apply the demoulding agent to the inner surface of the mold cavity according to a U-shaped walking path, which effectively promotes rapid demoulding of the mold, improves demoulding efficiency and quality, greatly improves the overall efficiency and quality of demoulding, reduces the impact of demoulding problems on production rhythm, and helps to improve production efficiency.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the mold cavity before injection molding of the present invention;

[0024] Figure 3 This is a diagram of the release agent wiping roller of the present invention performing wiping work in the mold cavity;

[0025] Figure 4 This is a top view of the interior of the upper mold of the present invention;

[0026] Figure 5 This is a schematic diagram of the release agent wiping roller of the present invention vertically entering the mold cavity;

[0027] Figure 6 It is a schematic diagram of the second piston channel and the third piston channel of the present invention;

[0028] Figure 7 This is the bottom perspective 1 of the mounting plate of the present invention;

[0029] Figure 8 This is the second perspective of the bottom of the mounting plate of the present invention;

[0030] Fig. 9 This is a schematic diagram of the lateral movement of the release agent wiping roller of the present invention;

[0031] Fig.10 This is a connection diagram of the rack column and the second rotating gear of the present invention;

[0032] Fig.11 It is a schematic diagram of the release agent wiping roller of the present invention.

[0033] Description of reference numerals:

[0034] In the figure: 1. upper mold; 2. lower mold; 3. push cylinder; 4. injection channel; 5. mold cavity; 6. first piston channel; 7. air inlet channel; 8. mounting plate; 9. first lead screw; 10. connecting column; 11. release agent wiping roller; 12. protective plate; 13. second piston channel; 14. third piston channel; 15. first piston block; 16. first push column; 17. first rotating gear; 18. first extrusion spring; 19. first connecting rod; 20. movable rod; 21. first rotating column; 22. first bevel gear; 23. second push column; 24. second lead screw; 25. connecting block; 26. second bevel gear; 27. third bevel gear; 28. second rotating gear; 29. ​​rack column; 30. fixed column; 31. second extrusion spring; 32. fixed plate; 33. threaded block; 34. sliding through hole; 35. limit block; 36. guide block. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example:

[0037] See also Figure 1-Figure 11 The present invention provides a technical solution: a rapid demoulding mechanism, comprising a mounting plate 8, a first lead screw 9, a connecting column 10, a demoulding agent wiping roller 11 and a second lead screw 24, all of which are arranged in an upper mold 1, and the mounting plate 8 moves downward in the upper mold 1 through the first lead screw 9. During the downward movement, the demoulding agent wiping roller 11 is driven by the connecting column 10 to enter the mold cavity 5 of the lower mold 2, and the demoulding agent wiping roller 11 is driven by the second lead screw 24 to complete a U-shaped walking path in the mold cavity 5, so as to evenly apply the demoulding agent to the inner surface of the mold cavity 5 and promote rapid demoulding of the mold.

[0038] In this embodiment, a second piston channel 13 and a third piston channel 14 are respectively opened in the upper mold 1, and the second piston channel 13 and the third piston channel 14 are respectively located at symmetrical positions in the upper mold 1. A first piston block 15 and a first extrusion spring 18 are movably installed in the second piston channel 13, and a first push column 16 is fixedly installed on the side of the first piston block 15. There is no contact between the first push column 16 and the first extrusion spring 18. The other end of the first push column 16 extends into the third piston channel 14 and drives the second push column 23 in the third piston channel 14 to move. The shape of the third piston channel 14 is U-shaped, and the U-shaped channel opening position of the third piston channel 14 faces the second piston channel 13.

[0039] In this embodiment, a first rotating gear 17 is disposed at the top of the first lead screw 9 , and gear columns are disposed on the first push column 16 and the second push column 23 , and the first push column 16 and the second push column 23 are meshed and connected with the first rotating gear 17 via the gear columns.

[0040] The shape of the first push column 16 is Z-shaped. When the first push column 16 has not started working, the bending position of the first push column 16 is close to the first rotating gear 17. When the first push column 16 starts to move, the tooth column on the first push column 16 will be meshed and connected with the first rotating gear 17, and drive the first rotating gear 17 to rotate, that is, when the first rotating gear 17 rotates, it will drive the mounting plate 8 to move downward through the first lead screw 9. When the mounting plate 8 moves down to the limit block 35, the tooth column on the first push column 16 is separated from the first rotating gear 17. At the same time, when the first rotating gear 17 rotates, the first push column 16 will enter the third piston channel 14 and drive the second push column 23 to move in the third piston channel 14. When the first push column 16 cannot drive the first rotating gear 17 to rotate, the tooth column on the second push column 23 has not yet contacted the first rotating gear 17.

[0041] Two circles of gears are provided on the first rotating gear 17, which are respectively meshed and connected with the tooth columns on the first pushing column 16 and the tooth columns on the second pushing column 23, but the tooth columns on the first pushing column 16 and the second pushing column 23 can only rotate in one direction with the first rotating gear 17, that is, when the first pushing column 16 moves toward the side of the third piston channel 14, the first pushing column 16 can drive the first rotating gear 17 to rotate through the tooth columns, and when the first pushing column 16 moves in the opposite direction, the tooth columns on the first pushing column 16 will not drive the first rotating gear 17 to rotate. Similarly, when the second pushing column 23 moves toward the side of the second piston channel 13, the second pushing column 23 can drive the first rotating gear 17 to rotate through the tooth columns. When the second pushing column 23 is away from the second piston channel 13, the second pushing column 23 will not drive the first rotating gear 17 to rotate through the tooth columns. At the same time, the first pushing column 16 and the second pushing column 23 are staggered and are not located on the same horizontal plane.

[0042] In this embodiment, a first connecting rod 19 is fixedly installed at the bottom end of the first pushing column 16, a movable rod 20 is arranged below the first connecting rod 19, a rack column 29 is arranged on the movable rod 20, and a sliding through hole 34 matching the movable rod 20 is opened inside the mounting plate 8. When the first pushing column 16 moves, it will drive the first connecting rod 19 to move together. At the beginning, the end of the first connecting rod 19 does not contact the movable rod 20. Only when the first connecting rod 19 moves a certain distance will it contact the movable rod 20 and drive the movable rod 20 to move horizontally. The movable rod 20 maintains a stable lateral movement in the sliding through hole 34 in the mounting plate 8. At the same time, when the movable rod 20 moves, it will also drive the rack column 29 to move together.

[0043] In this embodiment, the upper mold 1 is also provided with a first rotating column 21, a fixed plate 32 and a limit block 35. The first rotating column 21 passes through the mounting plate 8. The fixed plate 32 and the limit block 35 are both below the mounting plate 8. The fixed plate 32 is located below the connecting block 25. When the release agent wiping roller 11 moves down to the lowest position in the mold cavity 5, the bottom end of the connecting block 25 contacts the fixed plate 32 to fix the position of the mounting plate 8.

[0044] In this embodiment, the first bevel gear 22, the third bevel gear 27 and the second rotating gear 28 are respectively arranged on the outer side of the first rotating column 21. The first bevel gear 22 and the third bevel gear 27 are respectively located on the upper and lower sides of the mounting plate 8. The second rotating gear 28 is located below the mounting plate 8, and the second rotating gear 28 is meshed and connected with the rack column 29.

[0045] When the rack column 29 moves, the first rotating column 21 can be driven to rotate through the second rotating gear 28. When the first rotating column 21 rotates, the second bevel gear 26 can be driven to rotate through the first bevel gear 22 or the third bevel gear 27, thereby driving the second lead screw 24 to rotate. When the second lead screw 24 rotates, it can drive the demolding agent wiping roller 11 to wipe the demolding agent inside the U-shaped mold cavity 5 through the threaded block 33 and the connecting column 10 to facilitate mold demolding.

[0046] When the first bevel gear 22 or the third bevel gear 27 drives the second bevel gear 26 to rotate respectively, the rotation direction of the second lead screw 24 is different. When the third bevel gear 27 drives the second lead screw 24 to rotate through the second bevel gear 26, the demolding agent wiping roller 11 wipes the inside of the mold cavity 5, and when the first bevel gear 22 drives the second lead screw 24 to rotate through the second bevel gear 26, it drives the demolding agent wiping roller 11 back to its original position.

[0047] In this embodiment, a fixing column 30 is fixedly installed on the side of the fixing plate 32 . The fixing column 30 passes through the movable rod 20 , and a second extrusion spring 31 is arranged on the outer side of the fixing column 30 .

[0048] In this embodiment, a connecting block 25 is provided below the mounting plate 8, the second lead screw 24 is movably connected to the connecting block 25, and a second bevel gear 26 is provided on the side of the connecting block 25, the second bevel gear 26 is meshingly connected with the third bevel gear 27, and a threaded block 33 is provided on the second lead screw 24, and the threaded block 33 is fixedly connected to the connecting column 10.

[0049] In this embodiment, a fixing rod is provided in the upper mold 1, and a guide block 36 is fixedly connected through the fixing rod. The guide block 36 extends into the mold cavity 5 of the lower mold 2, so that the mold cavity 5 is U-shaped. The width and depth of the mold cavity 5 are both greater than the thickness and width of the guide block 36. A protective plate 12 is provided in the lower mold 2. The protective plate 12 is located above the mold cavity 5. The protective plate 12 can be retracted into the retraction cavity when the release agent wiping roller 11 moves downward, so that the release agent wiping roller 11 can enter the mold cavity 5. When the release agent wiping roller 11 completes the coating work, the protective plate 12 will return to its original position to close the mold cavity 5, which is convenient for mold injection.

[0050] The second piston channel 13 and the third piston channel 14 are provided in the upper mold 1, and the first piston block 15, the first push column 16 and other components in the second piston channel 13 are connected with the first rotating gear 17 through the meshing connection of the tooth column to transmit power. When the mold starts to work, the upper mold 1 moves downward to allow gas to enter the second piston channel 13 to push the first piston block 15 to move, thereby driving the first push column 16 to move, and the first push column 16 drives the first rotating gear 17 to rotate through the tooth column, and the first rotating gear 17 drives the first lead screw 9 to rotate, thereby realizing the downward movement of the mounting plate 8, driving the demoulding agent wiping roller 11 to enter the mold cavity 5. With the help of the cooperation between the components in the piston channel and the rotating gear, a stable and ingenious power transmission link is formed, ensuring that the demoulding agent wiping roller 11 can accurately enter the mold cavity 5 according to the preset action to start the coating work.

[0051] The first rotating gear 17 is provided with two circles of gears, which are respectively meshed with the tooth columns on the first pushing column 16 and the second pushing column 23, and the tooth columns of the first pushing column 16 and the second pushing column 23 can only drive the first rotating gear 17 to rotate in a specific direction. This design enables the first pushing column 16 to drive the first rotating gear 17 to rotate forward when moving toward the side of the third piston channel 14, thereby driving the mounting plate 8 to move downward; and the subsequent second pushing column 23 can drive the first rotating gear 17 to reverse when moving accordingly, thereby driving the mounting plate 8 to move up and reset. This two-way and orderly transmission mechanism ensures that the release agent wiping roller 11 can smoothly return to its initial position after entering the mold cavity 5 to apply the release agent. The whole process is orderly, thereby improving the reliability and accuracy of the mechanism operation.

[0052] The complex movement of the demoulding agent wiping roller 11 in the mold cavity 5 is realized through the coordinated cooperation of the first rotating column 21, the first bevel gear 22, the third bevel gear 27, the second bevel gear 26, the second lead screw 24, the movable rod 20, the rack column 29 and other components. When the first pushing column 16 moves a certain distance, the movable rod 20 is driven to move horizontally through the first connecting rod 19, and the rack column 29 on the movable rod 20 drives the second rotating gear 28 to rotate, thereby rotating the first rotating column 21. The first rotating column 21 drives the second lead screw 24 to rotate by virtue of the engagement of the bevel gear and the second bevel gear 26. Finally, the demoulding agent wiping roller 11 is driven to complete the horizontal movement in the mold cavity 5 through the threaded block 33 and the connecting column 10, thereby realizing the movement of the demoulding agent wiping roller 11 first vertically entering the mold cavity and then applying the demoulding agent therein according to an L-shaped path, covering the interior of the mold cavity 5 in all directions to ensure the comprehensiveness and effectiveness of the demoulding agent application.

[0053] When the first bevel gear 22 or the third bevel gear 27 drives the second bevel gear 26 to rotate, the rotation direction of the second lead screw 24 is different. The third bevel gear 27 drives the second lead screw 24 to rotate so that the release agent wiping roller 11 wipes the inside of the mold cavity 5, while the first bevel gear 22 drives the second lead screw 24 to rotate to drive the release agent wiping roller 11 back to its original position. This design of relying on different bevel gears to control different rotation directions accurately realizes the reciprocating motion of the release agent wiping roller 11 in the mold cavity 5, meets the different requirements of applying release agent and resetting, and reflects the efficiency and precision of the coordinated work of various components.

[0054] The first extrusion spring 18 and the second extrusion spring 31 are arranged in the mechanism, which play a key resetting role. After the release agent is applied once, the upper mold 1 is separated from the lower mold 2, the gas in the second piston channel 13 is released, and the first extrusion spring 18 recovers its deformation, pushing the first push column 16 to slowly return to the second piston channel 13; at the same time, the movable rod 20 will gradually return to its original position under the elastic force of the second extrusion spring 31, and through the linkage with the relevant gears, it drives the first rotating column 21 to reverse, and then the second lead screw 24 to reverse, and finally the release agent wiping roller 11 returns to the position before entering the mold cavity 5. This method of automatically resetting the components by relying on the elastic potential energy of the spring ensures that the entire rapid demoulding mechanism can be recycled, and is ready for the next application of release agent to the mold cavity, reducing manual intervention, and improving the automation of the production process and the efficiency of equipment use.

[0055] When in use, the upper mold 1 moves downward first. When the upper mold 1 moves downward, the gas in the first piston channel 6 is squeezed into the air inlet channel 7 through the piston column, and then enters the second piston channel 13. The first piston block 15 in the second piston channel 13 will move and drive the first push column 16 to move. At the same time, the first extrusion spring 18 is squeezed. When the first push column 16 moves, it will drive the first lead screw 9 to rotate through the first rotating gear 17. In this way, the mounting plate 8 will move downward in the upper mold 1 and drive the demoulding agent wiping roller 11 to vertically enter the mold cavity 5 until the upper tooth column of the first push column 16 is separated from the first rotating gear 17. As the first push column 1 6 continues to move, the first pushing column 16 will also drive the movable rod 20 to move horizontally through the first connecting rod 19, and when the movable rod 20 moves, it will drive the second rotating gear 28 to rotate through the rack column 29, so that when the second rotating gear 28 rotates, it will drive the first rotating column 21 to rotate, and when the first rotating column 21 rotates, it will drive the second lead screw 24 to rotate through the third bevel gear 27 and the second bevel gear 26, and when the second lead screw 24 rotates, it will drive the demoulding agent wiping roller 11 to move horizontally in the mold cavity 5 through the threaded block 33 and the connecting column 10, that is, the demoulding agent wiping roller 11 completes the demoulding agent coating of the L-shaped path in the mold cavity 5. As the first push column 16 continues to move, the first push column 16 enters the third piston channel 14 to drive the second push column 23 to move, and the second push column 23 is meshed with the first rotating gear 17, so that the first lead screw 9 will reverse, and will drive the mounting plate 8 to move up, and move to the same plane of the initial position, that is, drive the release agent wiping roller 11 to move up to complete the release agent smearing work inside the mold cavity 5; when the upper mold 1 and the lower mold 2 are separated, the gas in the second piston channel 13 will be released, the first extrusion spring 18 in the second piston channel 13 will be released, and the first push column 16 will slowly return to the third piston channel 14. In the second piston channel 13, at the same time, the first push column 16 will begin to separate from the movable rod 20 through the first connecting rod 19, and the movable rod 20 will slowly return to its original position under the elastic force of the second extrusion spring 31, and will also drive the first rotating column 21 to reverse through the rack column 29 and the second rotating gear 28, which can drive the first bevel gear 22 to reverse, and the first bevel gear 22 is meshed and connected with the second bevel gear 26 and drives the second lead screw 24 to reverse, so that the release agent wiping roller 11 will return to its original position, that is, the release agent wiping roller 11 returns to the position before entering the mold cavity 5, preparing for the next application of release agent to the mold cavity 5.

[0056] See also Figure 1-Figure 3 The present invention provides a technical solution: a high-precision injection mold, including an upper mold 1 and a lower mold 2, the upper mold 1 is provided with a pushing cylinder 3, the lower mold 2 is provided with a first piston channel 6 and an injection channel 4, the upper mold 1 is provided with an air intake channel 7, the first piston channel 6 is connected to the second piston channel 13 through the air intake channel 7, and the injection channel 4 is connected to the mold cavity 5.

[0057] A piston column and a connecting pipe are fixedly installed at the bottom end of the upper mold 1. The piston column is located in the first piston channel 6. A valve is fixedly installed in the first piston channel 6. When the upper mold 1 moves downward, the piston column will squeeze the air in the first piston channel 6, and the connecting pipe will contact the valve. The valve will open, so that the gas in the first active channel 6 enters the air inlet channel 7 through the valve and the connecting pipe, and then enters the second piston channel 13, providing power for the movement of the release agent wiping roller 11.

[0058] The working principle of this embodiment is as follows: when the upper mold 1 moves downward, the gas in the first piston channel 6 will be squeezed into the air inlet channel 7 through the piston column, and then enter the second piston channel 13. The first piston block 15 in the second piston channel 13 will move and drive the first push column 16 to move. At the same time, the first extrusion spring 18 is squeezed. When the first push column 16 moves, it will drive the first lead screw 9 to rotate through the first rotating gear 17, so that the mounting plate 8 will move downward in the upper mold 1 and drive the demoulding agent wiping roller 11 to vertically enter the mold cavity 5 until the upper tooth column of the first push column 16 is separated from the first rotating gear 17. As the first push column 16 continues to move, the first push column 16 will also drive the movable rod 20 to move horizontally through the first connecting rod 19. When the movable rod 20 moves, it will drive the second rotating gear 28 to rotate through the rack column 29, so that the second When the rotating gear 28 rotates, it will drive the first rotating column 21 to rotate. When the first rotating column 21 rotates, it will drive the second lead screw 24 to rotate through the third bevel gear 27 and the second bevel gear 26. When the second lead screw 24 rotates, it will drive the release agent wiping roller 11 to move horizontally in the mold cavity 5 through the threaded block 33 and the connecting column 10, that is, the release agent wiping roller 11 completes the release agent application in the L-shaped path in the mold cavity 5. As the first push column 16 continues to move, the first push column 16 enters the third piston channel 14 to drive the second push column 23 to move, and makes the second push column 23 mesh with the first rotating gear 17. In this way, the first lead screw 9 will reverse, and will drive the mounting plate 8 to move up, and move to the same plane of the initial position, that is, drive the release agent wiping roller 11 to move up to complete the release agent application work inside the mold cavity 5.

[0059] When the upper mold 1 is separated from the lower mold 2, the gas in the second piston channel 13 will be released, the first extrusion spring 18 in the second piston channel 13 will be released, and the first push column 16 will slowly return to the second piston channel 13. At the same time, the first push column 16 will begin to separate from the movable rod 20 through the first connecting rod 19, and the movable rod 20 will slowly return to its original position under the elastic force of the second extrusion spring 31, and will also drive the first rotating column 21 to reverse through the rack column 29 and the second rotating gear 28, which can drive the first bevel gear 22 to reverse, and the first bevel gear 22 is meshed with the second bevel gear 26 and drives the second lead screw 24 to reverse, so that the release agent wiping roller 11 will return to its original position, that is, the release agent wiping roller 11 returns to the position before entering the mold cavity 5, preparing for the next application of release agent to the mold cavity 5.

[0060] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rapid demoulding mechanism, characterized in that: The invention comprises a mounting plate (8), a first lead screw (9), a connecting column (10), a demoulding agent wiping roller (11) and a second lead screw (24), all of which are arranged in an upper mold (1). The mounting plate (8) moves downward in the upper mold (1) through the first lead screw (9). During the downward movement, the demoulding agent wiping roller (11) is driven by the connecting column (10) to enter the mold cavity (5) of the lower mold (2). The demoulding agent wiping roller (11) is driven by the second lead screw (24) to complete a U-shaped walking path in the mold cavity (5), thereby evenly applying the demoulding agent to the inner surface of the mold cavity (5) and promoting rapid demoulding of the mold.

2. A rapid demoulding mechanism according to claim 1, characterized in that: The upper mold (1) is provided with a second piston channel (13) and a third piston channel (14); the second piston channel (13) is provided with a first piston block (15), a first push column (16) and a first extrusion spring (18); the other end of the first push column (16) extends into the third piston channel (14) and drives the second push column (23) in the third piston channel (14) to move.

3. A rapid demoulding mechanism according to claim 2, characterized in that: A first rotating gear (17) is arranged at the top end of the first lead screw (9), and tooth columns are arranged on the first pushing column (16) and the second pushing column (23), and the first pushing column (16) and the second pushing column (23) are meshedly connected with the first rotating gear (17) via the tooth columns.

4. A rapid demoulding mechanism according to claim 2, characterized in that: A first connecting rod (19) is fixedly mounted on the bottom end of the first pushing column (16), a movable rod (20) is arranged below the first connecting rod (19), a rack column (29) is arranged on the movable rod (20), and a sliding through hole (34) matching the movable rod (20) is opened through the inside of the mounting plate (8).

5. A rapid demoulding mechanism according to claim 4, characterized in that: The upper mold (1) is also provided with a first rotating column (21), a fixed plate (32) and a limit block (35); the first rotating column (21) passes through the mounting plate (8); and the fixed plate (32) and the limit block (35) are both located below the mounting plate (8).

6. A rapid demoulding mechanism according to claim 5, characterized in that: A first bevel gear (22), a third bevel gear (27) and a second rotating gear (28) are respectively arranged on the outer side of the first rotating column (21); the first bevel gear (22) and the third bevel gear (27) are respectively located on the upper and lower sides of the mounting plate (8); the second rotating gear (28) is located below the mounting plate (8); and the second rotating gear (28) is meshedly connected with the rack column (29).

7. A rapid demoulding mechanism according to claim 6, characterized in that: A fixing column (30) is fixedly mounted on the side of the fixing plate (32), the fixing column (30) passes through the movable rod (20), and a second extrusion spring (31) is arranged outside the fixing column (30).

8. A rapid demoulding mechanism according to claim 6, characterized in that: A connecting block (25) is arranged below the mounting plate (8), the second lead screw (24) is movably connected to the connecting block (25), a second bevel gear (26) is arranged on the side of the connecting block (25), the second bevel gear (26) is meshingly connected to the third bevel gear (27), a threaded block (33) is arranged on the second lead screw (24), and the threaded block (33) is fixedly connected to the connecting column (10).

9. A rapid demoulding mechanism according to claim 1, characterized in that: The upper mold (1) is provided with a fixing rod, and is fixedly connected to a guide block (36) via the fixing rod. The guide block (36) extends into the mold cavity (5) of the lower mold (2), so that the mold cavity (5) is U-shaped. The lower mold (2) is provided with a protective plate (12), and the protective plate (12) is located above the mold cavity (5).

10. A high-precision injection mold, comprising a rapid demoulding mechanism according to any one of claims 1 to 9, characterized in that: The invention comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) is provided with a pushing cylinder (3), the lower mold (2) is provided with a first piston channel (6) and an injection channel (4), the upper mold (1) is provided with an air intake channel (7), the first piston channel (6) is connected to a second piston channel (13) through the air intake channel (7), and the injection channel (4) is connected to a mold cavity (5).

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