Gas-assisted injection molding device for injection molding

Abstract

The present application relates to a gas-assisted injection molding device for injection molding, which belongs to the field of injection molding, and aims to solve the problem that the existing gas-assisted injection molding device for injection molding cannot effectively reduce the adhesion between the plastic part and the mold. The device comprises a device housing and a first air duct, a second mounting plate is welded and fixed on the inner bottom end surface of the device housing, a lower mold base is fixed with a top bolt of the second mounting plate, a multifunctional cooling component is installed on the lower mold base, and an automatic demolding component is installed in the lower mold base. The cooling gas originally circulating in the present application is automatically discharged into the lower mold cavity through the through hole on the first transfer frame, and the atomized water vapor inside the liquid storage tank is also transported to the lower mold cavity. Therefore, the delivery of cooling gas is also utilized to realize the automatic atomization spraying of the release agent to the inside of the lower mold cavity, which can effectively reduce the friction and adhesion between the plastic part and the inner wall of the lower mold cavity, and help the product to be demolded smoothly without causing damage to the product.

Description

Technical Field

[0001] The invention relates to a gas-assisted injection molding device for injection molding, belonging to the field of injection molding. Background Art

[0002] Gas-assisted injection molding is a method of using gas to assist injection molding. Its basic principle is to inject high-pressure gas (usually nitrogen) to push the molten plastic to fill the mold cavity, thereby improving molding quality, shortening the cycle, and reducing production costs. Gas-assisted injection molding devices are widely used in automotive parts, home appliance housings, medical equipment, consumer electronics and other fields, especially for complex thin-walled plastic parts and large-size products. It has significant advantages.

[0003] However, there are some problems in the working process of the existing gas-assisted injection molding devices for injection molding. For example, a gas-assisted injection molding mold with a publication number of CN219705919U uses gas assistance to help the plastic parts to be molded in one step, but in the actual working process, it is not possible to perform efficient and uniform comprehensive cooling treatment on the injection mold. Therefore, the injection molded parts are prone to uneven cooling, resulting in adhesion between the plastic parts and the mold, affecting the stability of the subsequent demolding work; and it is not possible to effectively reduce the adhesion between the plastic parts and the mold, and it uses a conventional inclined top mechanism to demold the finished product. The contact area between the plastic parts and the pushing mechanism is small, and the stress is relatively concentrated. The plastic parts are prone to local tearing of the product, which affects the quality of the product, not only affecting the work efficiency, but also affecting the yield rate, and the practicality is poor. Therefore, we have made improvements on this and proposed a gas-assisted injection molding device for injection molding. Summary of the invention

[0004] (I) The technical problem to be solved by the present invention is that the existing gas-assisted injection molding device for injection molding is not able to perform efficient and uniform comprehensive cooling treatment on the injection mold, and it is not able to effectively reduce the adhesion between the plastic part and the mold, and it is not able to stably demold the plastic part.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a gas-assisted injection molding device for injection molding, including a device housing and a first air guide pipe, a first hydraulic rod is fixedly installed on the top of the device housing, a first mounting plate is fixedly connected to the bottom end of the first hydraulic rod, an upper mold base is fixedly connected to the bottom of the first mounting plate by bolts, an upper mold plate is fixedly connected to the bottom of the upper mold base, a second mounting plate is welded and fixedly installed on the inner bottom end surface of the device housing, a lower mold base is fixedly fixed by bolts on the top of the second mounting plate, a lower mold base is provided in the lower mold base, and a lower mold cavity is provided in the lower mold base. A multifunctional cooling component is installed on the lower mold base, and an automatic demolding component is installed in the lower mold base. An injection tube is fixedly connected to the top of the first mounting plate, and an injection head is connected to the bottom of the injection tube, and the injection head is fixed in the upper mold base and the upper mold plate. The injection tube and the first air duct are both slidably connected to the top of the device housing, the bottom end of the first air duct is connected to a processing box, the bottom end of the processing box is connected to a second air duct, and the bottom end of the second air duct is connected to an injection needle, and the injection needle is fixed in the upper mold base and the upper mold plate.

[0007] Wherein, the multifunctional cooling assembly comprises a liquid storage tank, the liquid storage tank is welded and fixed on the side end surface of the lower mold base, the liquid storage tank is symmetrically distributed on both sides of the lower mold base, the side ends of the liquid storage tank are connected with a fixed pipe, a filter plate is welded and fixed in the liquid storage tank, a small air pump is installed and fixed in the liquid storage tank, a first thermal conductive pipe is flange-connected to the small air pump, one end of the first thermal conductive pipe is arranged above the filter plate, the other end of the first thermal conductive pipe is connected to a first transfer frame, a through hole is opened on the top of the first transfer frame, a second thermal conductive pipe is connected to the first transfer frame, a sleeve is connected to the top end of the second thermal conductive pipe, a through groove is penetrated through the top of the sleeve, a first sealing ring is fixedly connected in the through groove, a first connecting spring is welded and fixed on the inner wall of the sleeve, a baffle is welded and fixed on the other end of the first connecting spring, one end of the baffle is fixedly connected to a connecting shaft, and the connecting shaft is rotatably connected in the sleeve.

[0008] Among them, the first thermal conductive tube is connected to the middle part of the bottom side end of the first transfer frame, the second thermal conductive tube is equidistantly distributed on the side end of the first transfer frame, the second thermal conductive tube corresponds to the sleeve one-to-one, the top end surface of the sleeve is flush with the top end surface of the lower mold base, the top end surface of the first transfer frame is flush with the inner bottom end surface of the lower mold cavity, the through holes are equidistantly distributed on the top of the first transfer frame, the baffles are symmetrically distributed on both sides of the sleeve, and the baffles correspond to the first connecting spring and the connecting shaft respectively.

[0009] Among them, a third temperature conducting pipe is slidably connected in the first sealing ring, an end of the third temperature conducting pipe is connected to the second transfer frame, a fourth temperature conducting pipe is connected to the second transfer frame, a second sealing ring is fixedly connected to the inner wall of the end of the fourth temperature conducting pipe, a fifth temperature conducting pipe is slidably connected in the second sealing ring, the fifth temperature conducting pipe is fixedly connected in the liquid storage tank, a sixth temperature conducting pipe is connected to the bottom side end of the fifth temperature conducting pipe, the third temperature conducting pipes are equidistantly distributed on the side ends of the second transfer frame, the third temperature conducting pipes correspond to the second temperature conducting pipes one by one through sleeves, the fourth temperature conducting pipe is connected to the middle part of the top side end of the second transfer frame, and the sixth temperature conducting pipes are symmetrically distributed on both sides of the bottom of the fifth temperature conducting pipe.

[0010] Among them, a guide tube is welded and fixed on the filter plate, an atomizing nozzle is installed on the top of the guide tube, and a conveying cylinder is connected to the bottom of the guide tube. A spiral rod is rotatably connected in the conveying cylinder, and the bottom end of the spiral rod is rotatably connected to the inner bottom end surface of the liquid storage tank, and a connecting plate is welded and fixed to the bottom of the spiral rod. A refrigeration plate is installed on the side end of the liquid storage tank, and the spiral rods are symmetrically distributed on both sides of the inside of the liquid storage tank. The spiral rods correspond one to one with the conveying tubes, and the guide tubes are symmetrically distributed on both sides of the top of the conveying tube, and the refrigeration plates are symmetrically distributed on both sides of the liquid storage tank.

[0011] Among them, the automatic demoulding component includes a slide groove, which is opened in the lower mold base, and a second connecting spring is welded and fixed on the inner wall of the slide groove, and a sliding plate is welded and fixed on the other end of the second connecting spring, and the sliding plate is limited and slidably connected in the slide groove, and the sliding plate is in contact with the inner wall of the slide groove, and a guide plate is welded and fixed on the sliding plate, and the cross-section of the guide plate is a right-angle trapezoid, and the guide plate penetrates and is slidably connected in the lower mold base, and a rack is welded and fixed on the guide plate, and a circular gear is meshed and connected to the rack, and a threaded rod is welded and fixed on the circular gear, and the bottom end of the threaded rod is rotatably connected to the bottom of the slide groove.

[0012] Among them, a connecting sleeve rod is threadedly connected to the threaded rod, and the connecting sleeve rod is limitedly slidably connected in the lower mold base. The cross-section of the connecting sleeve rod is rectangular, and a support plate is welded and fixed to the top end of the connecting sleeve rod, and the support plate is limitedly slidably connected in the lower model cavity. A push rod is welded and fixed on the first mounting plate, and the bottom end face of the push rod is arc-shaped. The connecting sleeve rod is fixed to the bottom center part of the support plate, and the side end face of the support plate fits the inner wall of the lower model cavity.

[0013] Among them, the processing box is welded and fixed on the top surface of the first mounting plate, a fixing plate is welded and fixed on the side surface of the processing box, a return spring is welded and fixed on the fixing plate, a clamping rod is welded and fixed on the other end of the return spring, a sealing block is slidably connected through the side end of the processing box, a clamping groove and a positioning groove are opened on the sealing block, the end of the clamping rod is clamped and connected in the clamping groove, the clamping grooves are symmetrically distributed on the upper and lower sides of the sealing block, the clamping grooves correspond one-to-one to the clamping rods, and the clamping rods correspond one-to-one to the return spring and the fixing plate respectively.

[0014] Among them, a filter frame is welded and fixed on the side end face of the sealing block, a rotating shaft is rotatably connected to the inner bottom end face of the filter frame, a guide fan blade and a rubber scraper are fixedly connected to the rotating shaft, a dehumidification screen plate and an activated carbon screen plate are arranged in the processing box, a positioning block is fixedly connected to the side end face of the dehumidification screen plate and the side end face of the activated carbon screen plate, the positioning block is snap-connected in the positioning groove, a second hydraulic rod is fixedly installed on the device housing, a flexible push plate is fixedly connected to the end of the second hydraulic rod, and a conveying equipment is installed in the device housing.

[0015] Among them, the rotating shaft is connected to the central part of the filter frame, the rubber scraper rods are symmetrically distributed on both sides of the rotating shaft, the bottom end surface of the rubber scraper rods is in contact with the inner bottom end surface of the filter frame, the second hydraulic rod is fixed to the central part of the side end of the flexible push plate, the bottom end surface of the flexible push plate is flush with the top end surface of the lower mold base, and the length of the flexible push plate is greater than the length of the lower mold cavity.

[0016] The gas-assisted injection molding device provided by the present invention has the following beneficial effects:

[0017] 1. Through the clamping of the upper mold base and the lower mold base, the connection between the sleeve and the third temperature conducting tube, as well as the connection between the fourth temperature conducting tube and the fifth temperature conducting tube can be automatically completed. Subsequently, under the driving action of the small air pump, the gas inside the liquid storage tank can be sucked, and the gas can be transported to the liquid storage tank again through the first temperature conducting tube, the first transfer frame, the second temperature conducting tube, the third temperature conducting tube, the second transfer frame, the fourth temperature conducting tube, the fifth temperature conducting tube and the sixth temperature conducting tube to complete the circulation flow. In addition, during the circulation flow, the gas can directly contact the refrigerated release agent for efficient cooling treatment, thereby achieving the effect of comprehensive and uniform cooling treatment of the upper mold base and the lower mold base at the same time, thereby reducing local overheating or uneven cooling, avoiding adhesion between the plastic part and the mold due to excessive local temperature difference, and affecting the stability of subsequent demolding work.

[0018] 2. After the upper mold base is driven to move upward to open the mold by the first hydraulic rod, the push rod can be driven to move upward synchronously and detach from the guide plate. At this time, under the elastic action of the second connecting spring, the rack can be driven to move outward automatically through the guide plate, and the threaded rod on the circular gear can push the support plate on the top of the connecting sleeve rod to move upward automatically, thereby realizing automatic demoulding. In the process of the support plate moving upward, the impurities remaining on the inner wall of the lower mold cavity can be automatically scraped and cleaned. Subsequently, when the flexible push plate on the second hydraulic rod is used to push the plastic part to move toward the conveying equipment, the top surface of the support plate can be scraped and cleaned at the same time, and the impurities remaining in the plastic part and the lower mold cavity can be pushed to the conveying equipment at the same time, and the plastic part is subsequently conveyed and transported and cleaned, thereby completing the automatic demoulding and automatic cleaning work inside the lower mold cavity. Similarly, when the upper mold base and the lower mold base are molded, the push rod can push the guide plate to automatically move and reset. At this time, through the meshing of the rack and the circular gear, the connecting sleeve rod on the threaded rod can push the support plate to automatically move downward and reset, thereby ensuring the stability of subsequent injection molding work and improving the working efficiency of the gas-assisted injection molding device.

[0019] 3. Through the setting of the sixth temperature conducting pipe, the screw rod can be pushed to rotate automatically through the connecting plate during the gas circulation process. Combined with the conveying cylinder and the guide pipe, the release agent that is continuously cooled inside the liquid storage tank can be automatically atomized and sprayed. After the circulating gas is directly in contact with the release agent and cooled, it is contacted with the atomized release agent again for secondary cooling. In addition, during the circulation process, the gas can carry the cooled atomized water vapor for synchronous circulation, further improving the cooling effect of the injection mold, thereby improving the molding efficiency of the injection molded parts, and the atomized water vapor of the release agent is also prepared for the subsequent automatic atomization spraying inside the lower model cavity.

[0020] 4. Through the provided connecting spring, after the upper mold base and the lower mold base are opened, the baffles on both sides can be pushed to automatically move and reset, and the sleeve can be automatically closed. At this time, under the continuous driving action of the small air pump, the originally circulating cooling gas is automatically discharged into the lower mold cavity through the through hole on the first transfer frame. At the same time, the atomized water vapor inside the liquid storage tank is also transported to the lower mold cavity. Since the atomized water vapor inside the liquid storage tank is formed by the release agent, the automatic atomization spraying of the release agent to the inside of the lower mold cavity is also realized by utilizing the delivery of cooling gas. By spraying the release agent in the lower mold cavity, the friction and adhesion between the plastic part and the inner wall of the lower mold cavity can be effectively reduced, which helps the product to be demolded smoothly without causing damage to the product, prevents surface defects or molding defects caused by friction or adhesion during the demolding process, and can improve the surface finish of the injection molded product.

[0021] 5. Through the filter frame, dehumidification screen plate and activated carbon screen plate, the nitrogen used in the gas-assisted injection molding process is filtered, dehumidified and purified, avoiding the impurities in the nitrogen from causing adverse effects on the quality of the injection molded parts, and avoiding the moisture in the nitrogen from contacting the injection molded parts, resulting in bubbles, surface defects or corrosion molds. At the same time, during the gas delivery process, the guide fan blades can drive the rubber scraper on the rotating shaft to rotate automatically, avoiding the filter frame from being blocked during long-term operation and affecting the subsequent filtering effect; and through the cooperation of the clamping rod and the clamping slot, as well as the positioning block and the positioning slot, the disassembly and installation of the filter frame, the dehumidification screen plate and the activated carbon screen plate can be completed conveniently, thereby ensuring the convenience of subsequent cleaning or replacement of the filter frame, the dehumidification screen plate and the activated carbon screen plate, and increasing the diversity and practicality of the gas-assisted injection molding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the connection structure between the first transfer frame and the through hole of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection structure between the third temperature conducting pipe and the second transfer frame of the present invention;

[0026] Figure 4 This is a schematic diagram of the connection structure between the fourth temperature conducting pipe and the second sealing ring of the present invention;

[0027] Figure 5 It is a schematic diagram of the connection structure of the threaded rod and the connecting sleeve rod of the present invention;

[0028] Figure 6 It is a schematic diagram of the overall main structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the main cross-sectional structure of the lower die base of the present invention;

[0030] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0031] Fig. 9 It is a schematic diagram of the side section structure of the lower die base of the present invention;

[0032] Fig.10 This is a schematic diagram of the main cross-sectional structure of the casing of the present invention;

[0033] Fig.11 It is a schematic diagram of the top-sectional structure of the casing of the present invention;

[0034] Fig.12 It is a schematic diagram of the side section structure of the liquid storage tank of the present invention;

[0035] Fig.13 It is a schematic diagram of the top-sectional structure of the liquid storage tank of the present invention;

[0036] Fig.14 It is a schematic diagram of the overall side section structure of the present invention;

[0037] Fig.15 For the present invention Fig.14 The enlarged structural diagram at B in the middle;

[0038] Fig.16 It is a schematic diagram of the top view of the guide plate of the present invention;

[0039] Fig.17 It is a schematic diagram of the top view of the rack structure of the present invention;

[0040] Fig.18 It is a schematic diagram of the side section structure of the processing box of the present invention;

[0041] Fig.19 It is a schematic diagram of the top-sectional structure of the processing box of the present invention.

[0042] In the figure: 1, device housing; 2, first hydraulic rod; 3, first mounting plate; 4, upper die seat; 5, upper model plate; 6, second mounting plate; 7, lower die seat; 8, multifunctional cooling assembly; 801, liquid storage tank; 802, fixed pipe; 803, filter plate; 804, small air pump; 805, first temperature conducting pipe; 806, first transfer frame; 807, through hole; 808, second temperature conducting pipe; 809, sleeve; 810, through groove; 811, first sealing ring; 812, first connecting spring; 813, baffle; 814, connecting shaft; 815, third temperature conducting pipe; 816, second transfer frame; 817, fourth temperature conducting pipe; 818, second sealing ring; 819, fifth temperature conducting pipe; 820, sixth temperature conducting pipe; 821, flow guide pipe; 822, atomizing nozzle; 823, conveying cylinder; 824, spiral rod; 82 5. Connecting plate; 826. Refrigeration sheet; 9. Automatic demoulding assembly; 901. Slide; 902. Second connecting spring; 903. Sliding plate; 904. Guide plate; 905. Rack; 906. Circular gear; 907. Threaded rod; 908. Connecting sleeve rod; 909. Support plate; 910. Push rod; 10. Lower mold cavity; 11. Injection tube; 12. Injection head; 13. First air guide tube; 14. Organizer; 15. Second air guide pipe; 16. Air injection needle; 17. Fixed plate; 18. Return spring; 19. Clamp rod; 20. Sealing block; 21. Clamp slot; 22. Filter frame; 23. Rotating shaft; 24. Guide fan blade; 25. Rubber scraper; 26. Dehumidification screen; 27. Activated carbon screen; 28. Positioning block; 29. ​​Positioning slot; 30. Second hydraulic rod; 31. Flexible push plate; 32. Conveying equipment. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0044] Embodiment 1:

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 and Fig.17As shown, the present embodiment proposes a gas-assisted injection molding device for injection molding, including a device housing 1 and a first air duct 13, a first hydraulic rod 2 is fixedly installed on the top of the device housing 1, a first hydraulic rod 2 is fixedly connected to the bottom end of the first hydraulic rod 2, an upper mold base 4 is fixedly connected to the bottom of the first mounting plate 3 with bolts, an upper mold base 4 is fixedly connected to the bottom of the upper mold base 4 with an upper model plate 5, a second mounting plate 6 is welded and fixed to the inner bottom end surface of the device housing 1, a lower mold base 7 is fixedly fixed to the top of the second mounting plate 6 with bolts, a lower mold base 7 is provided with a lower mold cavity 10 in the lower mold base 7, a multifunctional cooling component 8 is installed on the lower mold base 7, an automatic demolding component 9 is installed in the lower mold base 7, an injection tube 11 is fixedly connected to the top of the first mounting plate 3, an injection head 12 is connected to the bottom of the injection tube 11, the injection head 12 is fixedly installed in the upper mold base 4 and the upper model plate 5, the injection tube 11 and the first air duct 13 are both slidably connected to the top of the device housing 1, and the bottom end of the first air duct 13 is connected to the It is connected to a processing box 14, the bottom end of which is connected to a second air duct 15, the bottom end of which is connected to an air injection needle 16, which is installed and fixed in the upper mold base 4 and the upper model plate 5. The multifunctional cooling component 8 can simultaneously perform a comprehensive and uniform cooling treatment on the upper mold base 4 and the lower mold base 7, thereby reducing local overheating or uneven cooling, and avoiding adhesion between the plastic part and the mold due to excessive local temperature difference; and combined with the automatic demoulding component 9, it can complete the automatic demoulding and automatic cleaning work inside the lower model cavity 10, and again cooperate with the multifunctional cooling component 8 to automatically spray the demoulding agent in the lower model cavity 10, which can effectively reduce the friction and adhesion between the plastic part and the inner wall of the lower model cavity 10, help the product to be demoulded smoothly without causing damage to the product, prevent surface defects or molding defects caused by friction or adhesion during the demoulding process, and improve the surface finish of the injection molded product.

[0046] Embodiment 2:

[0047] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0048] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the multifunctional cooling assembly 8 includes a liquid storage tank 801, the liquid storage tank 801 is welded and fixed on the side end surface of the lower mold base 7, the liquid storage tank 801 is symmetrically distributed on both sides of the lower mold base 7, the side end of the liquid storage tank 801 is connected to a fixed pipe 802, a solenoid valve is installed on the fixed pipe 802, a filter plate 803 is welded and fixed in the liquid storage tank 801, a small air pump 804 is installed and fixed in the liquid storage tank 801, a first temperature conducting pipe 805 is flange-connected to the small air pump 804, one end of the first temperature conducting pipe 805 is arranged above the filter plate 803, the other end of the first temperature conducting pipe 805 is connected to a first transfer frame 806, a through hole 807 is opened on the top of the first transfer frame 806, and the first The rotating frame 806 is connected to a second heat conducting pipe 808, and the top of the second heat conducting pipe 808 is connected to a sleeve 809. The first heat conducting pipe 805, the first transfer frame 806, the second heat conducting pipe 808 and the sleeve 809 are all fixedly connected in the lower mold base 7. A through groove 810 is formed through the top of the sleeve 809, and a first sealing ring 811 is fixedly connected in the through groove 810. A first connecting spring 812 is welded and fixed on the inner wall of the sleeve 809, and a baffle 813 is welded and fixed on the other end of the first connecting spring 812. One end of the baffle 813 is fixedly connected to a connecting shaft 814, and the connecting shaft 814 is rotatably connected in the sleeve 809. A third heat conducting pipe 815 is slidably connected in the first sealing ring 811, and the end of the third heat conducting pipe 815 is connected to the second transfer frame 816, the second transfer frame 816 is connected to a fourth temperature conducting pipe 817, the third temperature conducting pipe 815, the second transfer frame 816 and the fourth temperature conducting pipe 817 are all fixedly connected in the upper mold base 4, the inner wall of the end of the fourth temperature conducting pipe 817 is fixedly connected to a second sealing ring 818, the second sealing ring 818 is slidably connected to a fifth temperature conducting pipe 819, the fifth temperature conducting pipe 819 is fixedly connected in the liquid storage tank 801, the bottom side end of the fifth temperature conducting pipe 819 is connected to a sixth temperature conducting pipe 820, the third temperature conducting pipes 815 are equidistantly distributed on the side ends of the second transfer frame 816, the third temperature conducting pipe 815 corresponds to the second temperature conducting pipe 808 one by one through the sleeve 809, the fourth temperature conducting pipe 817 is connected to the middle part of the top side end of the second transfer frame 816, and the sixth temperature conducting pipe 820 is connected to the bottom side end of the fifth temperature conducting pipe 819. 0 are symmetrically distributed on both sides of the bottom of the fifth temperature conducting pipe 819. By closing the upper mold base 4 and the lower mold base 7, the connection between the sleeve 809 and the third temperature conducting pipe 815, and the connection between the fourth temperature conducting pipe 817 and the fifth temperature conducting pipe 819 can be automatically completed. Then, under the driving action of the small air pump 804, the gas inside the liquid storage tank 801 can be sucked, and the gas can be transported to the liquid storage tank 801 again through the first temperature conducting pipe 805, the first transfer frame 806, the second temperature conducting pipe 808, the third temperature conducting pipe 815, the second transfer frame 816, the fourth temperature conducting pipe 817, the fifth temperature conducting pipe 819 and the sixth temperature conducting pipe 820 to complete the circulation flow. In addition, during the circulation flow, the gas can directly contact the refrigerated release agent to perform efficient cooling treatment.The upper die base 4 and the lower die base 7 are cooled uniformly at the same time, thereby reducing local overheating or uneven cooling.

[0049] like Figure 2 , Figure 3 , Figure 7 , Fig. 9 , Fig.10 and Fig.11 As shown, as a preferred embodiment, on the basis of the above method, further, the first heat conducting tube 805 is connected to the middle part of the bottom side end of the first transfer frame 806, the second heat conducting tube 808 is equidistantly distributed on the side end of the first transfer frame 806, the second heat conducting tube 808 corresponds to the sleeve 809 one by one, the top end surface of the sleeve 809 is flush with the top end surface of the lower mold base 7, the top end surface of the first transfer frame 806 is flush with the inner bottom end surface of the lower model cavity 10, the through holes 807 are equidistantly distributed on the top of the first transfer frame 806, the baffles 813 are symmetrically distributed on both sides of the sleeve 809, the baffles 813 correspond to the first connecting spring 812 and the connecting shaft 814 one by one, respectively, under the elastic action of the first connecting spring 812, after the upper mold base 4 and the lower mold base 7 are opened, the baffles 813 on both sides can be pushed to automatically move and reset, and the sleeve 809 can be automatically closed to avoid the loss of atomized water vapor.

[0050] like Figure 6 , Figure 7 , Figure 8 , Fig.12 and Fig.13As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, a guide tube 821 is welded and fixed on the filter plate 803, an atomizing nozzle 822 is installed on the top of the guide tube 821, a conveying cylinder 823 is connected to the bottom of the guide tube 821, a spiral rod 824 is rotatably connected in the conveying cylinder 823, the bottom end of the spiral rod 824 is rotatably connected to the bottom end surface of the liquid storage tank 801, a connecting plate 825 is welded and fixed to the bottom of the spiral rod 824, a cooling plate 826 is installed on the side end of the liquid storage tank 801, the spiral rod 824 is symmetrically distributed on both sides of the liquid storage tank 801, the spiral rod 824 corresponds one to one with the conveying cylinder 823, and the guide tubes 821 are symmetrically distributed on the top of the conveying cylinder 823. On both sides, the cooling plates 826 are symmetrically distributed on both sides of the liquid storage tank 801. Under the gas guiding action of the sixth temperature conducting tube 820, the screw rod 824 can be automatically rotated through the connecting plate 825 during the gas circulation process. Combined with the conveying cylinder 823 and the guide tube 821, the release agent that continuously cools the inside of the liquid storage tank 801 can be automatically atomized and sprayed, and can be automatically discharged into the lower mold cavity 10 through the through hole 807 on the first transfer frame 806, thereby realizing the automatic atomization spraying of the release agent into the lower mold cavity 10. By spraying the release agent in the lower mold cavity 10, the friction and adhesion between the plastic part and the inner wall of the lower mold cavity 10 can be effectively reduced, which helps the product to be demolded smoothly without causing damage to the product.

[0051] like Figure 5 , Figure 7 , Fig.14 , Fig.15 , Fig.16 and Fig.17As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the automatic demoulding component 9 includes a slide groove 901, the slide groove 901 is opened in the lower mold base 7, a second connecting spring 902 is welded and fixed on the inner wall of the slide groove 901, and a sliding plate 903 is welded and fixed on the other end of the second connecting spring 902, and the sliding plate 903 is limitedly slidably connected in the slide groove 901, and the sliding plate 903 is in contact with the inner wall of the slide groove 901, and a guide plate 904 is welded and fixed on the sliding plate 903, and the guide plate The cross section of 904 is a right-angled trapezoid. The guide plate 904 is connected to the lower die seat 7 by sliding. A rack 905 is welded and fixed on the guide plate 904. A circular gear 906 is meshed and connected on the rack 905. A threaded rod 907 is welded and fixed on the circular gear 906. The bottom end of the threaded rod 907 is rotatably connected to the bottom of the slide groove 901. A connecting sleeve rod 908 is threadedly connected to the threaded rod 907. The connecting sleeve rod 908 is limitedly slidably connected in the lower die seat 7. The cross section of the connecting sleeve rod 908 is rectangular. A support plate 909 is welded and fixed to the top of the connecting sleeve rod 908, and the support plate 909 is limitedly slidably connected in the lower mold cavity 10. A push rod 910 is welded and fixed on the first mounting plate 3. The bottom end surface of the push rod 910 is arc-shaped. The connecting sleeve rod 908 is fixed to the bottom center of the support plate 909. The side end surface of the support plate 909 fits the inner wall of the lower mold cavity 10. After the first hydraulic rod 2 drives the upper mold base 4 to move upward to open the mold, it can drive the push rod 910 to move upward synchronously and disengage from the guide plate 90 4. At this time, under the elastic action of the second connecting spring 902, the rack 905 can be driven to move outward automatically through the guide plate 904, and the threaded rod 907 on the circular gear 906 can push the support plate 909 on the top of the connecting sleeve rod 908 to move upward automatically, thereby realizing automatic demoulding. In addition, during the upward movement of the support plate 909, the impurities remaining on the inner wall of the lower mold cavity 10 can be automatically scraped and cleaned, thereby ensuring the stability of the subsequent injection molding work and improving the working efficiency of the gas-assisted injection molding device.

[0052] like Figure 6 , Fig.14 , Fig.18 and Fig.19As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the processing box 14 is welded and fixed on the top surface of the first mounting plate 3, and a fixing plate 17 is welded and fixed on the side surface of the processing box 14, and a reset spring 18 is welded and fixed on the fixing plate 17, and a clamping rod 19 is welded and fixed on the other end of the reset spring 18, and the clamping rod 19 penetrates and is slidably connected to the fixing plate 17, and a sealing block 20 is penetrated and slidably connected to the side end of the processing box 14, and a clamping groove 21 and a positioning groove are provided on the sealing block 20 29, the end of the clamping rod 19 is connected in the clamping groove 21, the clamping groove 21 is symmetrically distributed on the upper and lower sides of the sealing block 20, the clamping groove 21 corresponds to the clamping rod 19 one by one, the clamping rod 19 corresponds to the reset spring 18 and the fixing plate 17 one by one, the side end surface of the sealing block 20 is welded and fixed with a filter frame 22, the inner bottom end surface of the filter frame 22 is rotatably connected with a rotating shaft 23, the rotating shaft 23 is fixedly connected with a guide blade 24 and a rubber scraper 25, and a dehumidification screen plate 26 and an active plate 26 are arranged in the processing box 14. The side end surface of the dehumidification mesh plate 26 and the side end surface of the activated carbon mesh plate 27 are fixedly connected with a positioning block 28, and the positioning block 28 is connected in the positioning groove 29. A second hydraulic rod 30 is fixedly installed on the device housing 1, and a flexible push plate 31 is fixedly connected to the end of the second hydraulic rod 30. A conveying device 32 is installed in the device housing 1. The filter frame 22, the dehumidification mesh plate 26 and the activated carbon mesh plate 27 realize the filtration, dehumidification and purification of the nitrogen used in the gas-assisted injection molding process. , preventing impurities in the nitrogen from adversely affecting the quality of the injection molded parts, and at the same time preventing moisture in the nitrogen from contacting the injection molded parts, causing bubbles, surface defects or corrosion molds, etc. Moreover, through the cooperation of the clamping rod 19 and the clamping slot 21 as well as the positioning block 28 and the positioning slot 29, the disassembly and installation of the filter frame 22, the dehumidification mesh plate 26 and the activated carbon mesh plate 27 can be completed conveniently, thereby ensuring the convenience of subsequent cleaning or replacement of the filter frame 22, the dehumidification mesh plate 26 and the activated carbon mesh plate 27.

[0053] like Fig.18 and Fig.19 As shown, as a preferred embodiment, on the basis of the above method, further, the rotating shaft 23 is connected to the central part of the inner part of the filter frame 22, the rubber scraper rods 25 are symmetrically distributed on both sides of the rotating shaft 23, the bottom end surface of the rubber scraper rod 25 is in contact with the inner bottom end surface of the filter frame 22, the positioning block 28 is made of magnetic material, the positioning block 28 is in contact with the inner wall of the positioning groove 29, the positioning block 28 is magnetically adsorbed and connected to the sealing block 20 through the positioning groove 29, the second hydraulic rod 30 is fixed to the central part of the side end of the flexible push plate 31, the bottom end surface of the flexible push plate 31 is flush with the top end surface of the lower mold seat 7, the length of the flexible push plate 31 is greater than the length of the lower mold cavity 10, and during the gas delivery process, the guide blades 24 can drive the rubber scraper rod 25 on the rotating shaft 23 to rotate automatically, so as to avoid blockage of the filter frame 22 during long-term operation, thereby affecting the subsequent filtering effect.

[0054] Embodiment 3:

[0055] The schemes in Example 1 and Example 2 are further introduced below in combination with specific working methods, as described below for details:

[0056] Specifically, when the gas-assisted injection molding device for injection molding is used: first, under the driving action of the first hydraulic rod 2, the upper mold base 4 on the first mounting plate 3 can be pushed to move downward and close the mold with the lower mold base 7 on the second mounting plate 6. During the closing process, the first mounting plate 3 can drive the push rod 910 to first contact the top inclined surface of the guide plate 904. Then, under the downward movement of the first mounting plate 3, the push rod 910 can push the guide plate 904 to move inside the slide groove 901. Under the movement of the guide plate 904, the rack 905 can be driven by the sliding plate 903 to move toward the circular gear 906 and mesh with the circular gear 906. At this time, the rack 905 can drive the threaded rod 907 to rotate in the inner thread of the connecting sleeve 908 by meshing with the circular gear 906, and then push the connecting sleeve 908 to move downward, thereby driving the support plate 909 on the top of the connecting sleeve 908 to move downward synchronously into the lower model cavity 10 in the lower mold base 7 until the upper mold base 4 and the lower mold base 7 complete the mold closing. At this time, the push rod 910 contacts the side end surface of the guide plate 904 and blocks the guide plate 904, while the connecting sleeve 908 drives the support plate 909 to fit with the inner bottom end surface of the lower model cavity 10, and blocks the various through holes 807 on the first transfer frame 806 to prevent the subsequent loss of atomized water vapor.

[0057] Then, the injection molding work can be carried out in the lower mold cavity 10 through the injection head 12 on the injection molding tube 11, and the set required amount of rubber material is injected. After reaching the preset required amount, the injection is stopped; at this time, the nitrogen can be transported to the processing box 14 through the first air guide pipe 13, and then the nitrogen can be stably transported to the lower mold cavity 10 through the air injection needle 16 at the bottom of the second air guide pipe 15. After the high-pressure nitrogen enters the lower injection mold cavity 10, it pushes the material to move along the lower injection mold cavity 10, so that the material fully fills the entire cavity, keeps the pressure in the cavity uniform, and at the same time can reduce the pressure in the mold, so that the size of the injection molded part is uniform, the warping deformation is small, the injection molded part is prevented from generating water marks due to shrinkage, the surface quality of the injection molded part is improved, the utilization rate of the material is improved, the molding cycle is reduced, and the service life of the mold is increased; and the gas transmission During the delivery process, the nitrogen passes through the filter frame 22, the dehumidification mesh plate 26 and the activated carbon mesh plate 27 in the processing box 14, which can filter, dehumidify and purify the nitrogen used in the gas-assisted injection molding process, so as to avoid the impurities in the nitrogen from having an adverse effect on the quality of the injection molded parts, and at the same time avoid the moisture in the nitrogen from contacting the injection molded parts, resulting in bubbles, surface defects or corrosion molds, etc., and under the action of gas circulation, the guide fan blades 24 can drive the rubber scraper 25 on the rotating shaft 23 to rotate automatically, and then the bottom filter surface of the filter frame 22 can be automatically and stably cleaned. Even if impurities still remain in the filter frame 22, after being scraped by the rubber scraper 25, the impurities will automatically accumulate at the rubber scraper 25, and other positions of the filter frame 22 can perform stable filtering work.

[0058] When the upper mold base 4 and the lower mold base 7 are closed, each third thermal conductive tube 815 in the upper mold base 4 can pass through the through groove 810 on the sleeve 809 and be automatically inserted into the sleeve 809, and sealed in combination with the first sealing ring 811. Under the insertion action of the third thermal conductive tube 815, the baffle 813 on the connecting shafts 814 on both sides can be pushed to automatically rotate downward and open, thereby completing the automatic connection between the second thermal conductive tube 808, the sleeve 809 and the third thermal conductive tube 815. Similarly, the fourth thermal conductive tube 817 in the upper mold base 4 can be automatically covered on the top of the fifth thermal conductive tube 819, and sealed in combination with the second sealing ring 818 in the fourth thermal conductive tube 817, thereby completing the automatic connection between the fourth thermal conductive tube 817 and the fifth thermal conductive tube 819.

[0059] Therefore, after gas-assisted injection molding, the small air pumps 804 in the liquid storage tanks 801 on both sides can be driven. At this time, under the driving action of the small air pumps 804, the air above the inside of the liquid storage tank 801 can be sucked through the first thermal conductive tube 805 and transported to the first transfer frame 806, and then transported to the corresponding third thermal conductive tube 815 through the sleeves 809 on each second thermal conductive tube 808, and then combined with the fourth thermal conductive tube 817 on the second transfer frame 816, the gas can be transported to the fifth thermal conductive tube 819 and discharged through the sixth thermal conductive tube 820. At this time, the discharged air is in direct contact with the release agent in the liquid storage tank 801. The gas then returns to the upper part of the liquid storage tank 801 in the form of bubbles, completing the circulation of the gas; and in the process of gas circulation, under the action of the refrigeration plate 826, the release agent in the liquid storage tank 801 can be continuously cooled, so the gas can automatically cool down through direct contact with the release agent, and by utilizing the automatically cooled gas and its circulation, the upper mold base 4 and the lower mold base 7 can be cooled comprehensively and evenly at the same time, thereby reducing local overheating or uneven cooling, and avoiding adhesion between the plastic part and the mold due to excessive local temperature difference, which affects the stability of subsequent demolding work.

[0060] Moreover, during the gas circulation process, when the sixth temperature conducting pipe 820 discharges the gas, it can push the screw rod 824 to rotate automatically through the connecting plate 825. Under the continuous rotation of the screw rod 824, combined with the conveying cylinder 823 and the guide pipe 821, the continuously cooled release agent inside the liquid storage tank 801 can be automatically conveyed to the atomizing nozzle 822 for automatic atomization spraying. After the circulating gas is in direct contact with the release agent and cooled, it is in contact with the atomized release agent again for secondary cooling. In addition, during the circulation process, the gas can carry the cooled atomized water vapor for synchronous circulation, thereby further improving the cooling effect of the injection mold, thereby improving the molding efficiency of the injection molded parts, and the atomized water vapor of the release agent is also prepared for the subsequent automatic atomization spraying inside the lower model cavity 10.

[0061] After the injection molded part is cooled and formed, the upper mold base 4 on the first mounting plate 3 can be driven by the first hydraulic rod 2 to move upward to open the mold. At the same time, the upper mold base 4 can drive the third temperature-conducting tube 815 to move away from the sleeve 809, and the fourth temperature-conducting tube 817 to move away from the fifth temperature-conducting tube 819. At this time, under the elastic action of the first connecting spring 812, the baffles 813 on both sides can be pushed to automatically rotate upward and reset, and the through groove 810 can be automatically closed to prevent the release agent from being atomized and lost. At the same time, after the first hydraulic rod 2 drives the upper mold base 4 to move upward to open the mold, it can drive the push rod 910 to move upward synchronously and move away from the guide Plate 904, at this time, under the elastic action of the second connecting spring 902, can drive the rack 905 to move outward automatically through the guide plate 904 on the sliding plate 903, and at this time the rack 905 can drive the meshing circular gear 906 to automatically rotate in the opposite direction, and then can drive the threaded rod 907 to automatically rotate in the opposite direction, and the connecting sleeve rod 908 connected by thread can drive the top support plate 909 to move upward automatically, and push the injection molded parts formed in the lower model cavity 10 to move upward synchronously, completing the automatic demoulding work, and in the process of the support plate 909 moving upward, the impurities remaining on the inner wall of the lower model cavity 10 can be automatically scraped and cleaned.

[0062] After the guide plate 904 moves to the limit distance and stops, the support plate 909 moves upward until it is flush with the top surface of the lower mold base 7. At this time, under the driving action of the second hydraulic rod 30, the flexible push plate 31 can push the plastic part to move toward the conveying device 32. At the same time, the flexible push plate 31 can scrape and clean the top surface of the support plate 909, and the impurities remaining in the plastic part and the lower mold cavity 10 can be pushed to the conveying device 32 at the same time, and the plastic part and the impurities remaining in the lower mold cavity 10 can be pushed to the conveying device 32 for subsequent transportation and transfer cleaning of the plastic part, thereby completing the automatic demoulding and automatic cleaning work inside the lower mold cavity 10; and during the upward movement of the support plate 909, the solenoid valve on the fixed pipe 802 is in an open state. Under the continuous driving action of the small air pump 804, the originally circulating cooling gas can pass It is automatically discharged into the lower mold cavity 10 through the through hole 807 on the first transfer frame 806. At the same time, the atomized water vapor retained in the liquid storage tank 801 is also transported to the lower mold cavity 10. Since the atomized water vapor inside the liquid storage tank 801 is formed by the release agent, the automatic atomization spraying of the release agent to the lower mold cavity 10 is also achieved by utilizing the delivery of cooling gas. By spraying the release agent in the lower mold cavity 10, the friction and adhesion between the plastic part and the inner wall of the lower mold cavity 10 can be effectively reduced during the next injection molding operation, thereby helping the product to be demolded smoothly without damaging the product, preventing surface defects or molding defects caused by friction or adhesion during the demolding process, and improving the surface finish of the injection molded product, and so on.

[0063] After the gas-assisted injection molding device has been working for a period of time, the staff can transport the release agent into the liquid storage tank 801 through the fixed tube 802, and the staff can pull the clamping rod 19 on the fixed plate 17 outward until the clamping rod 19 moves out of the clamping groove 21 on the sealing block 20, and the sealing block 20 can drive the filter frame 22 to move out of the processing box 14, and the sealing block 20 can drive the dehumidification screen plate 26 and the activated carbon screen plate 27 to move outward synchronously through the magnetic positioning block 28 in the positioning groove 29, thereby completing the disassembly of the filter frame 22, the dehumidification screen plate 26 and the activated carbon screen plate 27, thereby ensuring the subsequent cleaning or replacement of the filter frame 22, the dehumidification screen plate 26 and the activated carbon screen plate 27. In order to facilitate the processing work, the staff can then use the positioning groove 29 and the positioning block 28 to snap the treated or replaced dehumidification screen 26 and activated carbon screen 27 into place again, and push the filter frame 22, dehumidification screen 26 and activated carbon screen 27 into the processing box 14. Before pushing, it is necessary to pull the clamping rod 19 on the fixed plate 17 outward in advance until the sealing block 20 snaps into place, and then the clamping rod 19 can be released. At this time, under the elastic action of the reset spring 18, the clamping rod 19 can be driven to automatically snap into the clamping groove 21 on the sealing block 20, completing the snap-in installation of the sealing block 20, and ensuring the stability of the subsequent working state of the filter frame 22, dehumidification screen 26 and activated carbon screen 27.

[0064] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A gas-assisted injection molding device for injection molding, comprising a device housing (1) and a first air guide tube (13), characterized in that: A first hydraulic rod (2) is fixedly mounted on the top of the device housing (1); a first mounting plate (3) is fixedly connected to the bottom end of the first hydraulic rod (2); an upper mold base (4) is fixedly mounted to the bottom of the first mounting plate (3); an upper mold plate (5) is fixedly mounted to the bottom of the upper mold base (4); a second mounting plate (6) is welded and fixedly mounted on the bottom end surface of the device housing (1); a lower mold base (7) is fixedly mounted to the top of the second mounting plate (6); a lower mold cavity (10) is defined in the lower mold base (7); a multifunctional cooling assembly (8) is mounted on the lower mold base (7); an automatic demoulding assembly (9) is mounted in the lower mold base (7); an injection molding tube (1) is fixedly mounted on the top of the first mounting plate (3); 1), the bottom of the injection molding tube (11) is connected to an injection molding head (12), the injection molding head (12) is installed and fixed in the upper mold base (4) and the upper mold plate (5), the injection molding tube (11) and the first air guide tube (13) are both penetrated and slidably connected to the top of the device housing (1), the bottom end of the first air guide tube (13) is connected to a processing box (14), the bottom end of the processing box (14) is connected to a second air guide tube (15), the bottom end of the second air guide tube (15) is connected to an air injection needle (16), the air injection needle (16) is installed and fixed in the upper mold base (4) and the upper mold plate (5), the multifunctional cooling assembly (8) includes a liquid storage tank (801), the liquid storage tank (801) is welded and fixed to the side end surface of the lower mold base (7) The liquid storage tank (801) is symmetrically distributed on both sides of the lower mold base (7); the side ends of the liquid storage tank (801) are connected to a fixed pipe (802); a filter plate (803) is welded and fixed inside the liquid storage tank (801); a small air pump (804) is installed and fixed inside the liquid storage tank (801); a first temperature conducting pipe (805) is flange-connected to the small air pump (804); one end of the first temperature conducting pipe (805) is arranged above the filter plate (803); the other end of the first temperature conducting pipe (805) is connected to a first transfer frame (806); a through hole (807) is provided on the top of the first transfer frame (806); a second temperature conducting pipe (808) is connected to the first transfer frame (806); and the second temperature conducting pipe (809) is flange-connected to the first transfer frame (806); The top of the temperature tube (808) is connected to a sleeve (809), a through groove (810) is formed through the top of the sleeve (809), a first sealing ring (811) is fixedly connected in the through groove (810), a first connecting spring (812) is welded and fixed on the inner wall of the sleeve (809), a baffle (813) is welded and fixed on the other end of the first connecting spring (812), a connecting shaft (814) is fixedly connected to one end of the baffle (813), and the connecting shaft (814) is rotatably connected in the sleeve (809), the first temperature conducting tube (805) is connected to the middle part of the bottom side end of the first transfer frame (806), and the second temperature conducting tubes (808) are equidistantly distributed on the side end of the first transfer frame (806),The second heat conducting tube (808) corresponds to the sleeve (809) one-to-one, the top surface of the sleeve (809) is flush with the top surface of the lower mold base (7), the top surface of the first transfer frame (806) is flush with the inner bottom surface of the lower mold cavity (10), the through holes (807) are equidistantly distributed on the top of the first transfer frame (806), the baffles (813) are symmetrically distributed on both sides of the sleeve (809), and the baffles (813) correspond to the first connecting spring (812) and the connecting shaft (814) one-to-one, respectively, the first sealing ring (811) is slidably connected to the third heat conducting tube (815), the end of the third heat conducting tube (815) is connected to the second transfer frame (816), and the second transfer frame (816) is connected to the upper A fourth temperature conducting pipe (817) is connected, a second sealing ring (818) is fixedly connected to the inner wall of the end of the fourth temperature conducting pipe (817), a fifth temperature conducting pipe (819) is slidably connected inside the second sealing ring (818), the fifth temperature conducting pipe (819) is fixedly connected in the liquid storage tank (801), the bottom side end of the fifth temperature conducting pipe (819) is connected to the sixth temperature conducting pipe (820), the third temperature conducting pipes (815) are equidistantly distributed on the side ends of the second transfer frame (816), the third temperature conducting pipes (815) correspond one-to-one with the second temperature conducting pipes (808) through the sleeve (809), the fourth temperature conducting pipe (817) is connected to the middle part of the top side end of the second transfer frame (816), the sixth temperature conducting pipe (820) is connected to the bottom side end of the fifth temperature conducting pipe (819), the third temperature conducting pipes (815) are equidistantly distributed on the side ends of the second transfer frame (816), the third temperature conducting pipes (815) correspond one-to-one with the second temperature conducting pipes (808) through the sleeve (809), the fourth temperature conducting pipe (817) is connected to the middle part of the top side end of the second transfer frame (816), and the sixth temperature conducting pipe (820) is connected to the bottom side end of the fifth temperature conducting pipe (819). 0) are symmetrically distributed on both sides of the bottom of the fifth temperature conducting tube (819), a guide tube (821) is welded and fixed on the filter plate (803), an atomizing nozzle (822) is installed on the top of the guide tube (821), the bottom of the guide tube (821) is connected to a conveying cylinder (823), a spiral rod (824) is rotatably connected inside the conveying cylinder (823), the bottom end of the spiral rod (824) is rotatably connected to the inner bottom end surface of the liquid storage tank (801), a connecting plate (825) is welded and fixed at the bottom of the spiral rod (824), a refrigeration plate (826) is installed on the side end of the liquid storage tank (801), the spiral rod (824) is symmetrically distributed on both sides of the inside of the liquid storage tank (801), the spiral rod (824) ) corresponds to the conveying cylinder (823) one by one, the guide tube (821) is symmetrically distributed on both sides of the top of the conveying cylinder (823), the refrigeration plate (826) is symmetrically distributed on both sides of the liquid storage tank (801), the automatic demoulding component (9) includes a slide groove (901), the slide groove (901) is opened in the lower mold base (7), a second connecting spring (902) is welded and fixed on the inner wall of the slide groove (901), the other end of the second connecting spring (902) is welded and fixed with a sliding plate (903), the sliding plate (903) is limitedly slidably connected in the slide groove (901), the sliding plate (903) is in contact with the inner wall of the slide groove (901), and a guide plate (904) is welded and fixed on the sliding plate (903),The cross section of the guide plate (904) is a right-angled trapezoid. The guide plate (904) is slidably connected to the lower die seat (7). A rack (905) is welded and fixed to the guide plate (904). A circular gear (906) is meshed and connected to the rack (905). A threaded rod (907) is welded and fixed to the circular gear (906). The bottom end of the threaded rod (907) is rotatably connected to the bottom of the slide groove (901). A connecting sleeve rod (908) is threadedly connected to the threaded rod (907). The connecting sleeve rod (908) is limited The connecting sleeve rod (908) is slidably connected in the lower mold base (7), the cross section of the connecting sleeve rod (908) is rectangular, the top end of the connecting sleeve rod (908) is welded and fixed with a support plate (909), the support plate (909) is slidably connected in the lower mold cavity (10), a push rod (910) is welded and fixed on the first mounting plate (3), the bottom end surface of the push rod (910) is arc-shaped, the connecting sleeve rod (908) is fixed to the bottom center of the support plate (909), and the side end surface of the support plate (909) is in contact with the inner wall of the lower mold cavity (10).

2. A gas-assisted injection molding device for injection molding according to claim 1, characterized in that: The processing box (14) is welded and fixed on the top surface of the first mounting plate (3); a fixing plate (17) is welded and fixed on the side surface of the processing box (14); a reset spring (18) is welded and fixed on the fixing plate (17); a clamping rod (19) is welded and fixed on the other end of the reset spring (18); a sealing block (20) is slidably connected through the side end of the processing box (14); a clamping groove (21) and a positioning groove (29) are provided on the sealing block (20); an end of the clamping rod (19) is clamped and connected in the clamping groove (21); the clamping groove (21) is symmetrically distributed on the upper and lower sides of the sealing block (20); the clamping groove (21) corresponds one-to-one to the clamping rod (19); and the clamping rod (19) corresponds one-to-one to the reset spring (18) and the fixing plate (17), respectively.

3. A gas-assisted injection molding device for injection molding according to claim 2, characterized in that: A filter frame (22) is welded and fixed on the side end surface of the sealing block (20); a rotating shaft (23) is rotatably connected to the inner bottom end surface of the filter frame (22); a guide blade (24) and a rubber scraper (25) are fixedly connected to the rotating shaft (23); a dehumidification screen (26) and an activated carbon screen (27) are arranged in the processing box (14); a positioning block (28) is fixedly connected to the side end surface of the dehumidification screen (26) and the side end surface of the activated carbon screen (27); the positioning block (28) is snap-fitted into the positioning groove (29); a second hydraulic rod (30) is fixedly mounted on the device housing (1); a flexible push plate (31) is fixedly connected to the end of the second hydraulic rod (30); and a conveying device (32) is installed in the device housing (1).

4. A gas-assisted injection molding device for injection molding according to claim 3, characterized in that: The rotating shaft (23) is connected to the central part of the filter frame (22), the rubber scraper rods (25) are symmetrically distributed on both sides of the rotating shaft (23), the bottom end surface of the rubber scraper rods (25) is in contact with the bottom end surface of the filter frame (22), the second hydraulic rod (30) is fixed to the central part of the side end of the flexible push plate (31), the bottom end surface of the flexible push plate (31) is flush with the top end surface of the lower mold base (7), and the length of the flexible push plate (31) is greater than the length of the lower mold cavity (10).

Images