Mold opening device of injection molding machine for processing electroplated plate

Abstract

The invention discloses an injection molding machine mold opening device for electroplated plate processing, and relates to the technical field of injection molding machines, the injection molding machine mold opening device comprises a machine base, a female mold, a male mold and injection molding equipment are arranged above the machine base, and the side, close to the male mold, of the female mold is provided with a forming cavity; a mold opening auxiliary assembly is arranged at the position of the forming cavity and comprises a through groove communicating with the forming cavity, a telescopic column capable of rotating and moving in the axial direction of the through groove to eject a formed part is arranged in the through groove, and a sliding channel is integrally formed in the telescopic column. A spraying pipe for spraying a release agent is mounted in the sliding channel; blades for pushing and scraping, generating airflow, protecting and guiding are mounted on the spraying pipe. According to the mold opening device of the injection molding machine for processing the electroplated plates, by arranging the telescopic column, the spraying pipe, the blades and other structures, rotation of the telescopic column is accelerated, so that a sprayed release agent is rapidly air-dried, the functions of auxiliary mold opening, guiding, protecting and pushing and scraping can be achieved, and the processing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding machines, in particular to a mold opening device of an injection molding machine for processing electroplated plate materials. Background Art

[0002] An injection mold is a tool used to produce plastic products and to give them a complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and molten plastic into the mold cavity under high pressure from a workbench. After cooling and solidification, a molded product is obtained. Injection molds are used in the processing of electroplated plates.

[0003] For example, a patent entitled: An injection molding device with a precision injection mold for fully automatic mobile phone case molding (patent application number: CN202311237166.0) discloses an injection molding device with a precision injection mold for fully automatic mobile phone case molding. When the material is away from the punch, the various parts in the coating mechanism cooperate with each other to quickly spray the release agent onto the punch, so that the device can automatically spray the release agent during operation, avoiding manual spraying and further improving the working efficiency of the equipment. However, the function of the device is relatively single, and it is unable to air-dry the release agent after spraying, and its utilization efficiency needs to be improved.

[0004] Therefore, it is necessary to propose a mold opening device for an injection molding machine for electroplating sheet processing to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a mold opening device for an injection molding machine for processing electroplated plate materials, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a mold opening device for an injection molding machine for processing electroplated sheet materials, comprising a machine base, above which a die, a punch, and an injection molding device are arranged, and the die has a molding chamber on the side close to the punch;

[0007] The molding chamber is provided with a mold opening auxiliary component, the mold opening auxiliary component includes a through slot communicating with the molding chamber, and the through slot has a telescopic column inside that can rotate and move along its axial direction to eject the molded part, the telescopic column is integrally formed with a sliding channel, and a spray pipe for spraying a mold release agent is installed inside the sliding channel;

[0008] The spray pipe is equipped with blades for pushing, scraping, generating air flow, protecting and guiding.

[0009] Preferably, the telescopic column includes a solid section and a hollow section, wherein the sliding channel is located at the solid section, a telescopic tube is connected between the spraying pipe and the hollow section, and the hollow section is connected to the release agent delivery pipeline of the factory.

[0010] Preferably, a first round rod is fixedly connected to the outer wall of the spray pipe, the first round rod is rotatably connected to the inner wall of the sliding channel, and a first torsion spring is sleeved on the outside of the first round rod.

[0011] Preferably, a control assembly for driving the telescopic column to move along its axial direction is provided on the side of the female mold facing away from the male mold, and the control assembly includes a support plate and a first electric push rod.

[0012] Preferably, a driving assembly for driving the telescopic column to rotate is provided on the side of the female mold facing away from the male mold, and the driving assembly includes a first gear, a second gear and a motor.

[0013] Preferably, a scraper bar for scraping the inner wall of the molding chamber is installed inside the sliding channel, and a scraper frame is provided on the scraper bar. A second round rod is fixedly connected to the scraper bar, and the second round rod is rotatably connected to the inner wall of the sliding channel. A second torsion spring is mounted on the outside of the second round rod.

[0014] Preferably, a block is fixedly connected to the side wall of the scraper strip, the scraper frame is slidably set on the block, a spring is set inside the scraper frame, one end of the spring is fixedly connected to the block, and the other end of the spring is fixedly connected to the inner wall of the scraper frame.

[0015] Preferably, a reset component for resetting the scraper frame is provided between the scraper frame and the inner wall of the sliding channel, and the reset component includes a first magnet and a second magnet.

[0016] Preferably, a mouth-shaped groove is provided on the inner wall of the molding chamber, a mouth-shaped frame for pushing and scraping is provided inside the mouth-shaped groove, and a second electric push rod for driving the mouth-shaped frame to move back and forth is provided on the die.

[0017] Preferably, the blade is located on a side of the spray pipe facing away from the axis of the telescopic column.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The present invention accelerates the rotation of the telescopic column by providing structures such as a telescopic column, a spraying pipe, and blades, so that the release agent after spraying can be quickly air-dried, and can also realize the functions of assisting mold opening, guiding, protecting, and pushing and scraping, thereby improving processing efficiency;

[0020] 2. Control the telescopic column to accelerate its rotation. At this time, the blades are similar to fan blades. During the rotation process, airflow is generated in the molding chamber, which allows the sprayed release agent to dry quickly. The telescopic column can also be controlled to move along its axial direction to expand the airflow action area.

[0021] 3. When the telescopic column is retracted into the through slot, the end of the spray pipe away from the hollow section is guided by the oblique cut on the blade and swings back into the sliding channel. This realizes the guiding function and facilitates the recovery of the spray pipe and other structures.

[0022] 4. The blades are provided to protect the spray pipe by contacting the edge of the end of the through slot, so that the spray pipe will not be worn and the service life of the spray pipe is extended;

[0023] 5. The blade is pressed against the inner wall of the through groove by the reset elastic force of the first torsion spring. The telescopic column rotates, driving the blade to press against the inner wall of the through groove and scrape the residual film;

[0024] 6. By utilizing the movement and rotation of the telescopic column, a single spray pipe can ensure that the release agent can cover the interior of the molding chamber, achieving uniform spraying and reducing equipment use costs;

[0025] 7. By setting up structures such as scraping strips, scraping frames and springs, and the scraping frames can be adaptively extended and retracted, the scraping range is expanded and the cleaning efficiency is improved;

[0026] 8. A mouth-shaped frame and other structures are set up to push and scrape the four sides and corners of the molding chamber. Cooperating with the scraping strips, etc., the interior of the molding chamber can be fully covered by the scraping, and impurities that fall to the bottom of the molding chamber can be pushed out at the same time.

[0027] 9. When the telescopic column moves along its axial direction and toward the punch to eject the molded part from the middle of the molded part, the mouth frame moves toward the inside of the molding chamber and ejects the molded part from the edge of the molded part. Multiple simultaneous ejections ensure the efficiency of mold opening.

[0028] 10. By setting up structures such as reset components, when applied to some larger-sized concave molds, the scraper strip and scraper frame can be stably recovered to the inside of the sliding channel, thereby improving the applicability of the mold opening device of the injection molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of a mold opening device of an injection molding machine for processing electroplated sheet materials from one perspective of the present invention.

[0030] Figure 2 This is a structural schematic diagram from another perspective of the mold opening device of the injection molding machine for processing electroplated plates of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the die and the molding chamber of the present invention.

[0032] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure in the middle.

[0033] Figure 5It is a schematic diagram of the mouth-shaped frame structure of the present invention.

[0034] Figure 6 It is a schematic diagram of the die and through groove structure of the present invention.

[0035] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle.

[0036] Figure 8 For the present invention Figure 6 Enlarged schematic diagram of the structure at point C in the middle.

[0037] Figure 9 It is a schematic diagram of the structure of the solid section and the hollow section of the present invention.

[0038] Figure 10 This is a schematic structural diagram of the scraper strip and the second round rod of the present invention.

[0039] Figure 11 This is a schematic diagram of the second electric push rod and the die structure of the present invention.

[0040] Figure 12 For the present invention Figure 11 Enlarged schematic diagram of the structure at point D in the middle.

[0041] In the figure: 1. Machine base; 2. Concave die; 3. Punch die; 4. Adjustment seat; 5. Molding chamber; 6. Through slot; 7. Telescopic column; 701. Solid section; 702. Hollow section; 8. Sliding channel; 9. Spray pipe; 10. Blade; 11. First round rod; 12. First torsion spring; 13. Telescopic tube; 14. Support plate; 15. First electric push rod; 16. First gear; 17. Second gear; 18. Motor; 19. Scraper bar; 20. Second round rod; 21. Second torsion spring; 22. Block; 23. Scraper frame; 24. First magnet; 25. Spring; 26. Second magnet; 27. Mouth-shaped groove; 28. Mouth-shaped frame; 29. ​​Second electric push rod; 30. Injection molding equipment. DETAILED DESCRIPTION

[0042] Example 1, the present invention provides Figures 1 to 10 The mold opening device of an injection molding machine for processing electroplated plate materials shown includes a machine base 1, above which a die 2, a punch 3 and an injection molding device 30 are arranged, and a molding chamber 5 is provided on the side of the die 2 close to the punch 3, which is used for molding the plate and subsequent electroplating and other treatments.

[0043] The injection molding equipment 30 includes a hopper, a feed heating section, a screw barrel, a nozzle and other structures, which are used to melt the plastic raw materials and convey and inject them into the molding chamber 5; and a mold clamping device and other mechanisms are also provided above the machine base 1. The mold clamping device includes a guide rail, an electric cylinder, an adjustment seat 4 and other structures, wherein the die 2 is fixed on the adjustment seat 4, and the mold clamping device is used to control the die 2 and the punch 3 to close and open the mold, and can fix and lock the die 2 and the punch 3. The injection molding equipment 30, the mold clamping device and the injection molding process are all existing common technologies and will not be elaborated here.

[0044] Considering that the molded part is easy to stick to the molding cavity 5 when the mold is opened, in order to improve the efficiency of the mold opening, refer to Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 As shown in the figure, a mold opening auxiliary component is provided at the molding chamber 5, and the mold opening auxiliary component includes a through groove 6. The through groove 6 is provided on the die 2, and the through groove 6 is connected with the molding chamber 5. The through groove 6 passes through the side of the die 2 facing away from the punch 3. A telescopic column 7 is provided inside the through groove 6. The telescopic column 7 can rotate and move back and forth along its axial direction.

[0045] When the mold is opened, the telescopic column 7 moves along its axial direction and toward the punch 3 to eject the molded part, thereby realizing the function of assisting the mold opening.

[0046] During actual use, a discharge hopper is provided on the machine base 1 , and the molded parts fall into the discharge hopper for discharge after being demoulded.

[0047] Considering that in the process of injection molding, in order to prevent the molded parts from sticking to the molding chamber 5, after each injection molding is completed, a release agent is sprayed on the inner wall of the molding chamber 5 and air-dried to form an effective protective film, thereby preventing the molded parts from sticking. If it is manually applied, the operation is cumbersome and the processing efficiency is reduced; in addition, in the air-drying stage, if it is dried naturally, the waiting time is long, and if an external fan is used, the use cost is increased. In order to improve the processing efficiency, reference is made to the following methods: Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 As shown in FIG, a sliding channel 8 is integrally formed on the telescopic column 7, and a spray pipe 9 for spraying a release agent is installed inside the sliding channel 8. Figure 7 An atomizing nozzle is provided at one end of the spray pipe 9 outside the sliding channel 8 so that the release agent is atomized and sprayed out, ensuring that the release agent can be evenly covered in the molding cavity 5.

[0048] The telescopic column 7 comprises a solid section 701 and a hollow section 702, which are concentrically arranged. The sliding channel 8 is located in the solid section 701. A telescopic tube 13 is connected to the spray pipe 9. The end of the telescopic tube 13, distal from the spray pipe 9, is connected to the hollow section 702. The hollow section 702 is connected to the factory's release agent delivery pipeline via a rotary joint. In actual use, the release agent is delivered to the spray pipe 9 via the hollow section 702 and the telescopic tube 13, where it is atomized and sprayed.

[0049] Thermal insulation layers, such as organic thermal insulation materials, can be provided inside the telescopic column 7 and the die 2 for thermal insulation treatment to prevent the molding heat from affecting the spray pipe 9 and the like. This can be adjusted according to specific usage conditions.

[0050] The outer diameter of the solid section 701 away from the end of the hollow section 702 is adapted to the inner diameter of the through slot 6, which can close the through slot 6, while the outer diameters of the solid section 701 close to the end of the hollow section 702 and the hollow section 702 are both smaller than the inner diameter of the through slot 6.

[0051] Reference Figure 9 As shown in the figure, a first round rod 11 is fixedly connected to the outer wall of the spray pipe 9, and the first round rod 11 is rotatably connected to the inner wall of the sliding channel 8. A first torsion spring 12 is sleeved on the outside of the first round rod 11, and one end of the first torsion spring 12 is fixedly connected to the inner wall of the sliding channel 8, and the other end of the first torsion spring 12 is fixedly connected to the first round rod 11.

[0052] When the telescopic column 7 moves along its axial direction and toward the punch 3, the molded part is ejected. Under the action of the return elastic force of the first torsion spring 12, the spraying pipe 9 rotates around the first round rod 11 as the axis, and the end of the spraying pipe 9 away from the hollow section 702 is swung outward from the sliding channel 8 (refer to Figure 7 ), which makes it easier to spray the release agent into the molding chamber 5 from the spray pipe 9; and by controlling the distance that the telescopic column 7 is extended, the spraying position of the spray pipe 9 can be changed, and at the same time, the rotation of the telescopic column 7 can change the spraying direction of the spray pipe 9. Thus, by utilizing the movement and rotation of the telescopic column 7, a single spray pipe 9 can ensure that the release agent can cover the interior of the molding chamber 5, achieve uniform spraying, and reduce the cost of equipment use.

[0053] In addition, during the above spraying process, the rotation speed of the telescopic column 7 and the spraying pipe 9 is relatively low.

[0054] Furthermore, the elastic supporting force of the first torsion spring 12 is appropriate. When the spraying pipe 9 rotates synchronously with the telescopic column 7, the spraying pipe 9 will not swing at will. In actual use, a limit block can be set inside the sliding channel 8 to ensure the stability of the spraying pipe 9.

[0055] Reference Figure 7 、 Figure 9As shown in FIG, in order to achieve rapid drying of the release agent after spraying, a blade 10 is installed on the spray pipe 9. The blade 10 is located on the side of the spray pipe 9 facing away from the axis of the telescopic column 7. The blade 10 is sheet-shaped, and an oblique cut is provided on the end of the blade 10 close to the telescopic tube 13 to cooperate with the edge of the end of the through groove 6, so as to facilitate the recovery of the spray pipe 9 and the blade 10 into the interior of the through groove 6. In addition, the blade 10 can be set at an angle, and the shape and size can also be adjusted according to the specific usage.

[0056] After the release agent is sprayed, the telescopic column 7 is controlled to accelerate its rotation. At this time, the blades 10 are similar to fan blades. During the rotation, airflow is generated in the molding chamber 5, so that the sprayed release agent is quickly dried, thereby achieving the air-drying function. The above process only requires accelerating the rotation of the telescopic column 7, without the need for external equipment, thereby reducing the cost of use. In addition, the telescopic column 7 can also be controlled to move along its axial direction to expand the area of ​​action of the airflow.

[0057] After use, when the telescopic column 7 is controlled to be retracted into the interior of the through slot 6, the oblique cut first contacts the edge of the end of the through slot 6. Guided by the oblique cut on the blade 10, the end of the spray pipe 9 away from the hollow section 702 is recovered and swung into the sliding channel 8. At this time, the guiding function is realized, which facilitates the recovery of the spray pipe 9 and other structures.

[0058] Then, the spray pipe 9 and the like are recovered to the interior of the through groove 6, and the blades 10 are attached to the inner wall of the through groove 6. The end of the telescopic column 7 is flush with the inner wall of the molding chamber 5, closing the through groove 6 to ensure the subsequent injection molding operation.

[0059] Furthermore, compared with the spray pipe 9 directly contacting the edge of the end of the through groove 6, a blade 10 is provided. By the blade 10 contacting the edge of the end of the through groove 6, the function of protecting the spray pipe 9 is achieved, so that the spray pipe 9 will not be worn, etc., and the service life of the spray pipe 9 is extended.

[0060] Taking into account that after the spray pipe 9 and the like are recovered to the interior of the through groove 6, the release agent remaining in the spray pipe 9 or delivered by mistake may drip onto the inner wall of the through groove 6 to form a residual film, and due to the limited internal space of the through groove 6, it is inconvenient to use scrapers and other tools for scraping. In the present invention: after the spray pipe 9 and the like are recovered to the interior of the through groove 6, the blade 10 is tightly attached to the inner wall of the through groove 6 by the reset elastic force of the first torsion spring 12. At this time, the telescopic column 7 can be controlled to rotate, driving the blade 10 to stick to the inner wall of the through groove 6 and scrape, thereby realizing the function of scraping the residual film, and the telescopic column 7 can be controlled to move along its axial direction to adjust the scraping position; then, the operator can use a vacuum cleaner to suck the fallen residual film from the end of the through groove 6 close to the adjustment seat 4.

[0061] The present invention accelerates the rotation of the telescopic column 7 by providing structures such as the telescopic column 7, the spraying pipe 9 and the blade 10, so that the release agent after spraying can be quickly air-dried, and can realize the functions of auxiliary mold opening, guiding, protecting and scraping, thereby improving processing efficiency.

[0062] To realize the movement and rotation of the telescopic column 7, refer to Figure 6 、 Figure 8 As shown in the figure, a control component that drives the telescopic column 7 to move is provided on the side of the die 2 facing away from the punch 3. The control component includes a support plate 14 and a first electric push rod 15. The fixed end of the first electric push rod 15 is fixedly connected to the adjustment seat 4, the support plate 14 is fixedly connected to the telescopic end of the first electric push rod 15, and the telescopic column 7 is rotatably set on the support plate 14.

[0063] When the telescopic end of the first electric push rod 15 is controlled to extend, the telescopic column 7 is driven to move along its axial direction and toward the punch 3 through the support plate 14; and when the telescopic end of the first electric push rod 15 is controlled to retract, the telescopic column 7 is retracted into the interior of the through slot 6.

[0064] Reference Figure 6 、 Figure 8 As shown in the figure, a driving assembly for driving the telescopic column 7 to rotate is provided on the side of the die 2 facing away from the punch 3. The driving assembly includes a first gear 16, a second gear 17 and a motor 18. The motor 18 is fixedly mounted on the support plate 14. The first gear 16 is fixedly connected to the driving shaft of the motor 18. The second gear 17 is fixedly connected to the telescopic column 7. The first gear 16 and the second gear 17 are meshed and connected.

[0065] Start the motor 18, the motor 18 drives the first gear 16 to rotate, and since the first gear 16 is meshed with the second gear 17, the second gear 17 drives the telescopic column 7 to rotate; and when in use, the driving assembly can move synchronously with the support plate 14.

[0066] The motor 18, the first electric push rod 15 and other structures are all connected to the power supply of the factory and powered on for use.

[0067] Reference Figure 6 、 Figure 10As shown in , considering that in the last round of molding operation, particulate impurities are likely to remain in the molding chamber 5, if they are not cleaned in time, it will affect the use of the release agent and subsequent molding operations, especially compared with the punch 3, the molding chamber 5 located in the die 2 is more troublesome to clean. In order to achieve quick cleaning, a scraper 19 for scraping the inner wall of the molding chamber 5 is installed inside the sliding channel 8, and a second round rod 20 is fixedly connected to the scraper 19. The second round rod 20 is rotatably connected to the inner wall of the sliding channel 8, and a second torsion spring 21 is sheathed on the outside of the second round rod 20. One end of the second torsion spring 21 is fixedly connected to the second round rod 20, and the other end of the second torsion spring 21 is fixedly connected to the inner wall of the sliding channel 8, and the elastic supporting force of the second torsion spring 21 is relatively large.

[0068] Specifically, before spraying the release agent, the telescopic column 7 is controlled to extend so that the second round rod 20 moves to the edge of the molding chamber 5 and close to the end of the through groove 6. Under the restoring elastic force of the second torsion spring 21, the end of the scraper 19 away from the second round rod 20 swings away from the sliding channel 8 and closely adheres to the inner side wall of the molding chamber 5 ( Figure 6 The scraper 19 and the sliding channel 8 are distributed in a T shape, and the telescopic column 7 is controlled to rotate, and the scraper 19 is attached to the inner wall of the molding chamber 5 and scraped.

[0069] Reference Figure 6 、 Figure 10 As shown in the figure, considering that the rotation radius of the scraper 19 is circular and the molding chamber 5 may be rectangular, in order to expand the scraping area, a scraper frame 23 is provided on the scraper 19, and a block 22 is fixedly connected to the side wall of the scraper 19. The scraper frame 23 is slidably set on the block 22. A spring 25 is provided inside the scraper frame 23, and one end of the spring 25 is fixedly connected to the block 22, and the other end of the spring 25 is fixedly connected to the inner wall of the scraper frame 23.

[0070] There can be two scraping strips 19, which are respectively distributed on both sides of the scraping frame 23 to improve the stability of the scraping frame 23 (see Figure 10 ). All can add wear-resistant rubber scraper on the pushing and scraping side of scraping strip 19 and scraping frame 23, utilize scraper to push and scrape, replace regularly.

[0071] In actual use, before spraying the release agent, the telescopic column 7 is controlled to extend so that the second round rod 20 moves to the edge of the molding chamber 5 and close to the end of the through groove 6. Under the action of the reset elastic force of the second torsion spring 21, the end of the scraper 19 away from the second round rod 20 swings toward the direction away from the sliding channel 8 and is tightly attached to the inner side wall of the molding chamber 5, which can push and scrape the inner side wall of the molding chamber 5; at the same time, with the cooperation of the spring 25, the end of the scraper frame 23 away from the scraper bar 19 abuts against the four side surfaces inside the molding chamber 5 (including the bottom, top, etc.). Guided by the four side surfaces, the scraper frame 23 adaptively expands and contracts to expand the scraping range and improve the cleaning efficiency.

[0072] Furthermore, ball bearings are provided between the block 22 and the inner wall of the scraper frame 23 to improve the smoothness of the sliding of the scraper frame 23. At the same time, the end of the scraper frame 23 away from the scraper strip 19 is set to a rounded corner (or ball bearings are provided) to facilitate stable movement at the corner of the molding chamber 5 without getting stuck.

[0073] During recovery, the telescopic column 7 is controlled to retract, and the scraper 19 first fits against the edge of the end of the through groove 6. The end of the scraper 19 away from the second round rod 20 is swung toward the sliding channel 8 for recovery, so that the scraper 19 and the scraper frame 23 can be stably recovered to the inside of the sliding channel 8.

[0074] When the scraper strip 19 is fully extended, the total length of the scraping structure formed by the scraper strip 19 and the scraper frame 23 is less than the length of the sliding channel 8 .

[0075] By arranging structures such as the scraping strip 19, the scraping frame 23 and the spring 25, and the scraping frame 23 being adaptively retractable, the pushing and scraping range is expanded and the cleaning efficiency is improved.

[0076] The scraped impurities fall to the bottom of the molding chamber 5, and it is difficult to scrape and clean the corners of the molding chamber 5 by relying only on the scraping strip 19 and the scraping frame 23. In order to improve the efficiency of use, refer to Figure 5 、 Figure 6 As shown in the figure, a mouth-shaped groove 27 is provided on the inner wall of the molding chamber 5, and the mouth-shaped groove 27 corresponds to the four side surfaces inside the molding chamber 5. A mouth-shaped frame 28 for pushing and scraping is provided inside the mouth-shaped groove 27, and a second electric push rod 29 is provided on the die 2. The second electric push rod 29 is fixedly connected to the side of the die 2 close to the adjustment seat 4, and a through hole is provided on the die 2 for the telescopic end of the second electric push rod 29 to pass through. The mouth-shaped frame 28 is fixedly connected to the telescopic end of the second electric push rod 29, and the mouth-shaped frame 28 is driven to move back and forth by the second electric push rod 29.

[0077] After covering and scraping the inner side walls of the molding chamber 5, the telescopic end of the second electric push rod 29 is controlled to extend, driving the mouth-shaped frame 28 to move toward the interior of the molding chamber 5, and scraping the four sides and corners of the interior of the molding chamber 5, cooperating with the scraping strip 19, etc., to achieve full coverage of the interior of the molding chamber 5, and at the same time push out the impurities that fall to the bottom of the molding chamber 5, and the pushed impurities slide out of the discharge hopper, and the operator can use a vacuum cleaner to clean them up.

[0078] In addition, when the telescopic column 7 moves along its axial direction and toward the punch 3 to eject the molded part from the middle position of the molded part, the telescopic end of the second electric push rod 29 can be synchronously controlled to extend, driving the mouth frame 28 to move toward the inside of the molding chamber 5, and ejecting the molded part from the edge position of the molded part. Multiple synchronous ejections ensure the efficiency of mold opening.

[0079] Example 2, the present invention provides Figures 11 and 12 The mold opening device of an injection molding machine for processing electroplated sheet materials shown in the figure, the telescopic column 7, scraper 19, etc. form an integral mold opening auxiliary mechanism, which can be installed on the die 2 in a combined manner to increase the flexibility of use. Taking into account the larger size of some dies 2, it is necessary to increase the length of the scraper frame 23, while other structures remain unchanged to reduce the cost of use. At this time, after the scraper frame 23 is fully extended from the scraper bar 19, the total length of the scraping structure formed by the scraper bar 19 and the scraper frame 23 will be greater than the length of the sliding channel 8. In order to facilitate the scraper bar 19 and the scraper frame 23 to be stably recovered to the interior of the sliding channel 8 after use, a space for the scraper frame 23 to be retracted is provided between the scraper frame 23 and the inner wall of the sliding channel 8. The reset component of the position includes a first magnet 24 and a second magnet 26. The first magnet 24 is installed on the inner wall of the sliding channel 8 near the hollow section 702, and the second magnet 26 is installed on the end of the scraper frame 23 near the hollow section 702. The magnetic properties of the first magnet 24 and the second magnet 26 on the side close to each other are opposite, and the attraction between the first magnet 24 and the second magnet 26 is greater than the elastic supporting force of the spring 25. At the same time, the reset force of the second torsion spring 21 is greater than the attraction between the first magnet 24 and the second magnet 26, and the scraper strip 19, the second round rod 20, etc. are made of materials that are not affected by magnetism, such as non-magnetic stainless steel, etc.

[0080] In actual use, before spraying the release agent, the telescopic column 7 is controlled to extend so that the second round rod 20 moves to the edge of the end of the molding chamber 5 and the through groove 6. Since the restoring force of the second torsion spring 21 is greater than the attraction between the first magnet 24 and the second magnet 26, the scraper 19 is affected by the restoring force of the second torsion spring 21. The end away from the second round rod 20 swings toward the direction away from the sliding channel 8 and is tightly attached to the inner side wall of the molding chamber 5, which can push and scrape the inner side wall of the molding chamber 5; at this time, the first magnet 24 and the second magnet 26 are staggered and do not affect each other. Under the action of the restoring force of the spring 25, the scraper frame 23 extends away from one end of the scraper bar 19 and abuts against the four side surfaces inside the molding chamber 5 (including the bottom, top, etc.). Guided by the four side surfaces, the scraper frame 23 adaptively expands and contracts to expand the scraping range and improve the cleaning efficiency.

[0081] During the recovery, the telescopic column 7 is controlled to recover, and the scraper 19 is first attached to the edge of the end of the through groove 6. The end of the scraper 19 away from the second round rod 20 is swung back toward the sliding channel 8, and then the second magnet 26 begins to correspond to the first magnet 24 (refer to Figure 12 ), and the attraction force between the first magnet 24 and the second magnet 26 is greater than the elastic support force of the spring 25, so that the scraping frame 23 moves toward the first magnet 24 and is recovered, so that the scraping strip 19 and the scraping frame 23 are stably recovered to the inside of the sliding channel 8.

[0082] By providing structures such as a reset assembly, when applied to some larger dies 2, the scraper strip 19 and the scraper frame 23 can be stably recovered to the interior of the sliding channel 8, thereby improving the applicability of the mold opening device of the injection molding machine.

Claims

1. A mold opening device for an injection molding machine for processing electroplated sheet materials, comprising a machine base (1), characterized in that: A female mold (2), a male mold (3) and an injection molding device (30) are arranged above the machine base (1), and a molding chamber (5) is provided on a side of the female mold (2) close to the male mold (3); The molding chamber (5) is provided with a mold opening auxiliary component, the mold opening auxiliary component includes a through groove (6) communicating with the molding chamber (5), and the through groove (6) has a telescopic column (7) inside thereof capable of rotating and moving along its axial direction to eject the molded part, the telescopic column (7) is integrally formed with a sliding channel (8), and a spray pipe (9) for spraying a mold release agent is installed inside the sliding channel (8); The spray pipe (9) is provided with blades (10) for pushing, scraping, generating air flow, protecting and guiding.

2. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 1, characterized in that: The telescopic column (7) comprises a solid section (701) and a hollow section (702), wherein the sliding channel (8) is located at the solid section (701), a telescopic tube (13) is connected between the spraying pipe (9) and the hollow section (702), and the hollow section (702) is connected to the release agent delivery pipeline of the factory.

3. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 1, characterized in that: A first round rod (11) is fixedly connected to the outer wall of the spray pipe (9), and the first round rod (11) is rotatably connected to the inner wall of the sliding channel (8). A first torsion spring (12) is sleeved on the outside of the first round rod (11).

4. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 1, characterized in that: A control assembly for driving the telescopic column (7) to move along its axial direction is provided on the side of the female mold (2) facing away from the male mold (3). The control assembly includes a support plate (14) and a first electric push rod (15).

5. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 1, characterized in that: A driving assembly for driving the telescopic column (7) to rotate is provided on the side of the female mold (2) facing away from the male mold (3), and the driving assembly includes a first gear (16), a second gear (17) and a motor (18).

6. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 1, characterized in that: A scraper (19) for scraping the inner wall of the molding chamber (5) is installed inside the sliding channel (8), and a scraper frame (23) is provided on the scraper (19). A second round rod (20) is fixedly connected to the scraper (19), and the second round rod (20) is rotatably connected to the inner wall of the sliding channel (8). A second torsion spring (21) is sleeved on the outside of the second round rod (20).

7. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 6, characterized in that: A block (22) is fixedly connected to the side wall of the scraper strip (19), the scraper frame (23) is slidably arranged on the block (22), a spring (25) is arranged inside the scraper frame (23), one end of the spring (25) is fixedly connected to the block (22), and the other end of the spring (25) is fixedly connected to the inner wall of the scraper frame (23).

8. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 6, characterized in that: A reset component for resetting the scraping frame (23) is provided between the scraping frame (23) and the inner wall of the sliding channel (8), and the reset component comprises a first magnet (24) and a second magnet (26).

9. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 1, characterized in that: A mouth-shaped groove (27) is provided on the inner wall of the molding chamber (5), a mouth-shaped frame (28) for pushing and scraping is provided inside the mouth-shaped groove (27), and a second electric push rod (29) for driving the mouth-shaped frame (28) to move back and forth is provided on the die (2).

10. The mold opening device for an injection molding machine for processing electroplated sheet materials according to claim 1, characterized in that: The blade (10) is located on the side of the spray pipe (9) facing away from the axis of the telescopic column (7).

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