In-line mixing thermoplastic composite injection machine

Abstract

This invention discloses an online mixing thermoplastic composite material injection machine, comprising material tanks A, B, C, and D. The bottom of material tank A is connected to material tank C; the bottom of material tank B is connected to material tank D; and the outlets of material tanks C and D are respectively connected to a mixing head. The mixing head is used to fully mix the raw materials in material tanks C and D, and the mixed raw materials are injected into an online mixing mold. Each of material tanks A, B, C, and D is equipped with a condenser, and a vacuum pump is installed at the outlet of the condenser. The vacuum pump is used to extract air from the material tanks, and the condenser is used to condense the raw materials mixed in the air and return the condensed raw materials to the material tanks. The online mixing thermoplastic composite material injection machine of this invention, by equipping the material tanks with condensers and vacuum pumps, extracts air from the material tanks before heating the raw materials and injects inert gas to protect the raw materials, preventing oxidation during heating and ensuring the quality of the injection-molded products.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment, and more specifically, to an online mixing thermoplastic composite material injection machine. Background Technology

[0002] A dispensing machine is a highly automated material injection device, primarily used for large-scale production and assembly. Its principle involves injecting the material into the injection system via a pressure regulation system, and then using injection nozzles to deliver the material to the desired location. Dispensing machines are widely used not only in manufacturing, electronics, and aerospace, but also in various industries such as medical, packaging, and construction.

[0003] Patent document CN 102922751 A discloses a resin transfer molding injection machine for continuous fiber reinforced nylon 6 composite materials, comprising: a first tank for holding monomers, a second tank for holding catalysts, a third tank for holding initiators, and a fourth tank. The heated and melted monomers, catalysts, and initiators are respectively conveyed to the fourth tank via their respective metering devices for mixing into injection raw materials. The injection raw materials are injected into a mold through the outlet at the bottom of the fourth tank and a connected pipeline for molding, and the volume of the fourth tank is larger than the volume of injection raw materials that the mold can hold.

[0004] Existing dispensing machines do not perform a vacuuming process when heating the material tank. As a result, the raw materials in the tank are easily oxidized during the heating process. When the oxidized raw materials are injected into the mold, the quality of the dispensing molded products will be reduced.

[0005] Therefore, it is necessary to propose an online mixing thermoplastic composite material injection machine to solve the problems existing in the prior art. Summary of the Invention

[0006] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] To at least partially solve the above problems, the present invention provides an online mixing thermoplastic composite material injection machine, including material tanks A, B, C, and D. The bottom of material tank A is connected to material tank C; the bottom of material tank B is connected to material tank D; the outlets of material tanks C and D are respectively connected to a mixing head. The mixing head is used to fully mix the raw materials in material tanks C and D, and the mixed raw materials are injected into an online mixing mold.

[0008] Condensers are installed on tanks A, B, C, and D. Vacuum pumps are installed at the outlets of the condensers. The vacuum pumps are used to extract the air from the tanks. The condensers are used to condense the raw materials mixed in the air and return the condensed raw materials to the tanks. Inert gas is injected into the tanks after vacuuming to protect the raw materials.

[0009] Preferably, material tank A and material tank C are connected through a first temperature-controlled pipeline, material tank C is connected to the rear of the mixing head through a third temperature-controlled pipeline, and a first overflow valve is provided between the return port of material tank C and the third temperature-controlled pipeline;

[0010] Tank B and tank D are connected by a second temperature-controlled pipeline. Tank D is connected to the rear of the mixing head by a fourth temperature-controlled pipeline. A second overflow valve is installed between the return port of tank D (30) and the fourth temperature-controlled pipeline.

[0011] Preferably, the top of material tank A is provided with a first feeding port, and the top of material tank C is provided with a second feeding port.

[0012] Preferably, ball valve one is installed on the first temperature-controlled pipeline, ball valve two is installed on the second temperature-controlled pipeline, and level gauges are installed on material tanks C and D respectively. The opening and closing of ball valve one and ball valve two are controlled according to the material level height measured by the level gauges.

[0013] Preferably, tanks A, B, C, and D are each equipped with a heating device, a stirring device, an inert gas inlet, a safety valve, a pressure gauge, and a condenser.

[0014] Preferably, filter one and conveying device one are arranged sequentially on the third temperature-controlled pipeline in the direction away from material tank C, and filter two and conveying device two are arranged sequentially on the fourth temperature-controlled pipeline in the direction away from material tank D. Conveying device one conveys the raw material in material tank C to the mixing head, and conveying device two conveys the raw material in material tank D to the mixing head.

[0015] Preferably, the online mixing mold is connected to the glue dispensing machine frame via a quick-release connection mechanism. The quick-release connection mechanism includes a connecting column and a connecting plate. The connecting column is fixedly mounted on the online mixing mold, and the connecting plate is mounted on the glue dispensing machine frame. A snap-fit ​​plate is slidably mounted on the connecting plate, and the snap-fit ​​plate detachably snaps the connecting column onto the connecting plate.

[0016] Preferably, the side of the connecting plate is provided with intersecting horizontal and vertical grooves, and a rotating shaft is provided in the horizontal groove, which passes through the side wall of the horizontal groove and is rotatably connected to the connecting plate.

[0017] A series of through holes are arranged vertically on the bottom surface of the longitudinal groove. The snap-fit ​​plates are symmetrically arranged in the longitudinal groove. A cam is arranged on the rotating shaft at a position opposite to the snap-fit ​​plates. One end of the snap-fit ​​plate contacts the cam, and the other end of the snap-fit ​​plate is fixedly connected to one end of a spring. The other end of the spring is fixedly connected to the side of the longitudinal groove away from the rotating shaft.

[0018] The snap-fit ​​plate is arranged in a vertical array with through holes two corresponding to through holes one. On the side of through holes two away from the rotating shaft, there is a long hole that communicates with through holes two. The length direction of the long hole is consistent with the length direction of the snap-fit ​​plate, and the width of the long hole is smaller than the diameter of through holes two.

[0019] Both sides of the elongated hole are respectively provided with inclined surfaces at a predetermined angle to the surface of the snap-fit ​​plate. The inclined surfaces are formed by cutting from far to near and from shallow to deep relative to the through hole two along the length of the elongated hole. The inclined surfaces are used to clamp the connecting column.

[0020] The connecting post is a cylinder with a diameter that matches the diameter of through hole one and through hole two. A plane is symmetrically arranged on the cylindrical surface of one end of the connecting post, and the plane extends to one end face of the connecting post. The distance between the two planes is adapted to the width of the elongated hole.

[0021] Preferably, flanges are horizontally installed on the inner walls of the first and second feed ports, and an annular sealing groove is provided on the upper surface of the flanges, with a sealing element installed in the sealing groove.

[0022] Mounting plates are horizontally installed on the outer walls of both the first and second feeding ports. A sealing device is installed on the mounting plate. The sealing device includes a sealing door, a sealing door support, a connecting arm, and a mounting support vertically installed on the mounting plate. The sealing door support is fixedly installed on the upper surface of the sealing door. The two ends of the connecting arm are rotatably connected to the sealing door support and the mounting support, respectively.

[0023] Preferably, the sealing device further includes a locking mechanism, which includes locking pins symmetrically arranged on the sealing door. The front end of the locking pin is wedge-shaped, and the rear end of the locking pin is rotatably connected to one end of the pull rod. The other end of the pull rod is rotatably connected to one end of the crank. The crank is L-shaped, and the corner of the crank is rotatably connected to the crank support provided on the sealing door.

[0024] Locking grooves are provided on the inner walls of the first and second feeding ports at positions corresponding to the locking pins. The shape of the locking grooves is adapted to the wedge shape of the front end of the locking pins, and the locking pins are inserted into the locking grooves.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] The online mixing thermoplastic composite material injection machine of the present invention is equipped with a condenser and a vacuum pump on the material tank. Before heating the raw material, the air in the material tank is extracted and an inert gas is injected to protect the raw material, which can prevent the raw material from oxidizing during the heating process and ensure the quality of the injection product. The condenser condenses the raw material components contained in the air and returns them to the material tank, reducing the waste of raw materials.

[0027] The online mixing thermoplastic composite material dispensing machine of the present invention, other advantages, objectives and features of the present invention will be apparent in part from the following description, and in part will be understood by those skilled in the art through study and practice of the invention. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a schematic diagram of the online mixing thermoplastic composite material dispensing machine disclosed in this invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the quick-release connection mechanism disclosed in this invention;

[0031] Figure 3 This is a partial structural schematic diagram of the quick-release connection mechanism disclosed in this invention;

[0032] Figure 4 This is a partial cross-sectional structural schematic diagram of the quick-release connection mechanism disclosed in this invention;

[0033] Figure 5 This is a schematic diagram of the structure of the snap-fit ​​plate and connecting post disclosed in this invention;

[0034] Figure 6 This is a schematic diagram of the connecting column disclosed in this invention;

[0035] Figure 7 This is a bottom view of the connecting column disclosed in this invention.

[0036] Figure 8 This is a schematic diagram of the sealing device for the feeding port disclosed in this invention;

[0037] Figure 9 This is a top view of the sealing device disclosed in this invention.

[0038] Figure 10 for Figure 8 An enlarged structural diagram of part A in the middle. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0040] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0041] like Figure 1 As shown, the present invention provides an online mixing thermoplastic composite material injection machine, including material tanks A4, B14, C22, and D30. The bottom of material tank A4 is connected to material tank C22; the bottom of material tank B14 is connected to material tank D30; the outlets of material tanks C22 and D30 are respectively connected to a mixing head 34. The mixing head 34 is used to fully mix the raw materials in material tanks C22 and D30, and the mixed raw materials are injected into an online mixing mold 36.

[0042] Condensers are installed on material tanks A4, B14, C22 and D30. Vacuum pumps are installed on the outlet of the condensers. The vacuum pumps are used to extract the air from the material tanks. The condensers are used to condense the raw materials mixed in the air and return the condensed raw materials to the material tanks. Inert gas is injected into the material tanks after vacuuming to protect the raw materials.

[0043] The top of material tank A 4 is provided with a first feeding port 5, and the top of material tank C 22 is provided with a second feeding port 9.

[0044] The working principle of the above technical solution is as follows: The material tanks include material tank A4, material tank B14, material tank C22 and material tank D30; the bottom of material tank A4 is connected to material tank C22; the bottom of material tank B14 is connected to material tank D30; the glue outlets of material tank C22 and material tank D30 are respectively connected to mixing head 34. Mixing head 34 is used to fully mix the raw materials of material tank C22 and material tank D30, and the mixed raw materials are injected into online mixing mold 36.

[0045] Condensers are installed on tanks A, B, C, and D. Vacuum pumps are installed on the outlets of the condensers. The vacuum pumps are used to extract the air from the tanks. The condensers are used to condense the raw materials mixed in the air and return the condensed raw materials to the tanks. Inert gas is injected into the tanks after vacuuming to protect the raw materials.

[0046] Since the material tank needs to be vacuumed and the raw material heated before the injection molding operation can be carried out, and the material tank needs to be refilled and heated after the raw material in the material tank is used up, the injection operation needs to be interrupted. It can only continue after the raw material in the material tank is heated to a certain temperature. Continuous injection molding operation cannot be carried out. Through the premixing effect of the material tank A and the material tank B, and the holding function of the material tank C and the material tank D, real-time uninterrupted injection production can be realized.

[0047] The material tank A4 is provided with a first feeding port 5, and the material tank B14 is provided with a second feeding port 9;

[0048] The fusible monomer materials are fed into tanks A4 and B14 through the first feed port 5 and the second feed port 9, respectively. After heating, stirring, and vacuuming, a catalyst is added to tank A4, and a curing agent (initiator) is added to tank B14. At this point, the fusible monomer materials are premixed in tanks A4 and B14, respectively, to become raw material a and raw material b. Raw material a and raw material b are then fed into tanks C22 and D through ball valve 43 and ball valve 44, respectively. The raw materials are placed in container 30; after being heated, stirred, and vacuumed in container C22 and container D30, respectively, raw material a and raw material b enter the mixing head 34 through filter 41, conveying device 31, third temperature-controlled pipeline 33 and filter 42, conveying device 32, fourth temperature-controlled pipeline 35; after being fully mixed in the mixing head, raw material a and raw material b are injected into the online mixing mold 36; through the premixing effect of container A and container B, and the holding effect of container C22 and container D30, real-time uninterrupted glue injection production can be realized;

[0049] To prevent the raw material a from oxidizing, the material tank C22 is evacuated by vacuum pump 17 to remove the moisture and air from the raw material a; during the evacuation process, the raw material a contained in the gas passes through the condenser 17 and condenses back into the material tank C22.

[0050] To prevent the raw material b from oxidizing, the material tank D30 is evacuated by condenser 18 to remove the moisture and air from the raw material b. During the evacuation process, the raw material b contained in the gas passes through the condenser 18 and condenses back into the material tank D30.

[0051] Traditional injection molding machines are mostly suitable for thermosetting materials. Thermosetting materials cannot soften or be repeatedly molded when heated. In contrast to the various shortcomings of thermosetting materials, thermoplastic materials can flow and deform when heated and can maintain a certain shape after cooling. They are easy to process by extrusion, injection or blow molding. Therefore, thermoplastic materials can be reused and recycled, and defective products can also be reprocessed and reused, which can reduce production costs.

[0052] The beneficial effects of the above technical solution are as follows:

[0053] The online mixing thermoplastic composite material injection machine of the present invention is equipped with a condenser and a vacuum pump on the material tank. Before heating the raw material, the air in the material tank is extracted and an inert gas is injected to protect the raw material, which can prevent the raw material from oxidizing during the heating process and ensure the quality of the injection product. The condenser condenses the raw material components contained in the air and returns them to the material tank, reducing the waste of raw materials.

[0054] In one embodiment, material tank A4 and material tank C22 are connected through a first temperature-controlled pipeline 15, and material tank C22 is connected to the rear of mixing head 34 through a third temperature-controlled pipeline 33. A first overflow valve 39 is provided between the reflux port of material tank C22 and the third temperature-controlled pipeline 33.

[0055] Material tanks B14 and D30 are connected by a second temperature-controlled pipeline 16. Material tank D30 is connected to the rear of mixing head 34 by a fourth temperature-controlled pipeline 35. A second overflow valve 40 is provided between the return port of material tank D30 and the fourth temperature-controlled pipeline 35.

[0056] The working principle of the above technical solution is as follows: Material tank A4 and material tank C22 are connected through the first temperature-controlled pipeline 15, material tank C22 is connected to the rear of the mixing head 34 through the third temperature-controlled pipeline 33, and a first overflow valve 39 is provided between the return port of material tank C22 and the third temperature-controlled pipeline 33.

[0057] Material tanks B14 and D30 are connected by a second temperature-controlled pipeline 16. Material tank D30 is connected to the rear of mixing head 34 by a fourth temperature-controlled pipeline 35. A second overflow valve 40 is provided between the return port of material tank D30 and the fourth temperature-controlled pipeline 35.

[0058] The beneficial effects of the above technical solution are as follows: setting up a temperature-controlled pipeline between the material tanks can maintain the temperature of the raw materials during transportation between the tanks, ensure timely supply of raw materials, and control the amount of raw materials added according to production needs. The overflow valve can return the raw materials to the material tank when the pressure in the pipeline is too high during mold replacement or standby, thus protecting the pipeline safety and preventing raw material waste.

[0059] In one embodiment, a ball valve 43 is installed on the first temperature-controlled pipeline 15, a ball valve 44 is installed on the second temperature-controlled pipeline 16, and level gauges are installed on the material tanks C22 and D30 respectively. The opening and closing of the ball valve 43 and the ball valve 44 are controlled according to the material level height measured by the level gauges.

[0060] Tanks A4, B14, C22, and D30 are all equipped with heating devices, stirring devices, inert gas inlets, safety valves, pressure gauges, and condensers.

[0061] The working principle of the above technical solution:

[0062] The raw material a is controlled by ball valve 43 and enters the tank C22 through the first temperature-controlled pipeline 15. The stirring device 19 stirs the raw material a to ensure uniform heating. Inert gas is filled into the tank C22 through the inert gas inlet 24 to prevent oxidation of the raw material a. The tank C22 is evacuated through the condenser 17 to remove moisture and air from the raw material a. During the evacuation process, the raw material a contained in the gas passes through the condenser 17, condenses, and flows back into the tank C22. The pressure gauge 20 is placed on top of the tank C22 to detect the internal pressure. The safety valve 21 is placed on top of the tank C22 and opens when the internal pressure is too high to protect the tank C22. The level gauge 23 is placed on top of the tank C22 to detect the liquid level.

[0063] The raw material b is controlled by ball valve 44 and enters the tank D30 through temperature-controlled pipeline 16. The stirring device 26 stirs the raw material b to ensure uniform heating. Inert gas is filled into the tank D30 through inert gas inlet 29 to prevent oxidation of the raw material b. The tank D30 is evacuated through condenser 18 to remove moisture and air from the raw material b. During the evacuation process, the raw material b contained in the gas passes through condenser 18 and condenses back into the tank D30. Pressure gauge 27 is placed on top of the tank D30 to detect the internal pressure. Safety valve 28 is placed on top of the tank D30 and opens when the internal pressure is too high to protect the tank D30. Level gauge 25 is placed on top of the tank D30 to detect the internal level.

[0064] A vacuum pump is connected to the outlet of the condenser to extract the air from the tank.

[0065] Ball valve 43 is installed on the first temperature-controlled pipeline 15, ball valve 44 is installed on the second temperature-controlled pipeline 16, and level gauges are installed on material tanks C22 and D30 respectively. The opening and closing of ball valve 43 and ball valve 44 are controlled according to the material level height measured by the level gauges.

[0066] Tanks A4, B14, C22, and D30 are all equipped with heating devices, stirring devices, inert gas inlets, safety valves, pressure gauges, and condensers.

[0067] The stirring device includes stirring device 1, stirring device 2 10, stirring device 3 19, and stirring device 4 26; the inert gas inlet includes inert gas inlet 7, inert gas inlet 2 13, inert gas inlet 3 24, and inert gas inlet 4 29; the safety valve includes safety valve 1 3, safety valve 2 12, safety valve 3 21, and safety valve 4 28; the pressure gauge includes pressure gauge 1 2, pressure gauge 2 11, pressure gauge 3 20, and pressure gauge 4 27; the condenser includes condenser 1 6, condenser 2 8, condenser 3 17, and condenser 4 18.

[0068] The beneficial effects of the above technical solution are as follows: controlling the opening and closing of ball valve one and ball valve two by the level gauge can prevent excessive raw materials in the tank from causing waste; stirring the raw materials in the tank can make the raw materials heat evenly; the pressure gauge and safety valve can prevent excessive pressure in the tank and maintain the safety of the production line; and injecting inert gas into the tank can protect the raw materials from oxidation during the heating process and improve the quality of the raw materials.

[0069] In one embodiment, a filter 41 and a conveying device 31 are sequentially arranged on the third temperature-controlled pipeline 33 in the direction away from the material tank C 22, and a filter 42 and a conveying device 32 are sequentially arranged on the fourth temperature-controlled pipeline 35 in the direction away from the material tank D 30. The conveying device 31 conveys the raw material in the material tank C 22 to the mixing head 34, and the conveying device 32 conveys the raw material in the material tank D 30 to the mixing head 34.

[0070] The working principle of the above technical solution is as follows: Filter 1 41 and conveying device 1 31 are sequentially arranged on the third temperature-controlled pipeline 33 in the direction away from the material tank C 22. Filter 2 42 and conveying device 2 32 are sequentially arranged on the fourth temperature-controlled pipeline 35 in the direction away from the material tank D 30. Conveying device 1 31 conveys the raw material in material tank C 22 to the mixing head 34, and conveying device 2 32 conveys the raw material in material tank D 30 to the mixing head 34.

[0071] The beneficial effects of the above technical solution are as follows: the conveying device pressurizes and conveys the injection material to the mixing head. After being fully mixed in the mixing head, it is injected into the mold, ensuring the quality of the injection material. Mixing the raw materials before injection into the mold can be carried out according to the production needs, preventing waste caused by mixing too much raw material.

[0072] In one embodiment, the online mixing mold 36 is connected to the glue dispensing machine frame via a quick-release connection mechanism. The quick-release connection mechanism includes a connecting post 45 and a connecting plate 46. The connecting post 45 is fixedly mounted on the online mixing mold 36, and the connecting plate 46 is mounted on the glue dispensing machine frame. A snap-fit ​​plate 47 is slidably mounted on the connecting plate 46, and the snap-fit ​​plate 47 detachably snaps the connecting post 45 onto the connecting plate 46.

[0073] The working principle of the above technical solution is as follows: The online mixing mold 36 is connected to the glue injection machine frame through a quick-release connection mechanism. The quick-release connection mechanism includes a connecting column 45 and a connecting plate 46. The connecting column 45 is fixedly installed on the online mixing mold 36, and the connecting plate 46 is installed on the glue injection machine frame. A snap-fit ​​plate 47 is slidably installed on the connecting plate 46. The snap-fit ​​plate 47 detachably snaps the connecting column 45 onto the connecting plate 46.

[0074] Injection molding machines are arguably among the most widely used industrial machines on the market. However, in recent years, many injection molding companies have faced problems such as rising raw material costs, rapidly increasing labor costs, an increasing variety of injection molding products, and more frequent mold changes. As we all know, frequent mold changes for injection molding machines consume a lot of manpower and time, which is not conducive to the competitive development of enterprises. Therefore, a good quick mold change mechanism can effectively improve mold change efficiency and enhance the overall production level.

[0075] In the injection molding process, different products require different molds. If mold changes take too long, it leads to low production efficiency, which in turn affects the company's production plans and market competitiveness. Quick-change mold mechanisms allow for rapid mold replacement, saving time and costs and improving production efficiency.

[0076] Traditional mold changing requires multiple workers, is cumbersome, prone to errors, and poses safety risks. A quick mold changing mechanism simplifies the process, making operation easier and more convenient, reducing the difficulty of manual operation and safety hazards.

[0077] The beneficial effects of the above technical solution are: the quick-release connection mechanism can quickly change the mold, save replacement time and cost, improve production efficiency, simplify the operation process, make the operation simpler and more convenient, and reduce the difficulty of manual operation and work safety hazards.

[0078] like Figure 2-7 As shown, in one embodiment, the side of the connecting plate 46 is provided with intersecting transverse grooves 48 and longitudinal grooves 49, and a rotating shaft 57 is provided in the transverse groove 48, which penetrates the side wall of the transverse groove 48. The rotating shaft 57 is rotatably disposed with the connecting plate 46.

[0079] Through holes 50 are arranged in a vertical array on the bottom surface of the longitudinal groove 49. The snap-fit ​​plates 47 are symmetrically arranged in the longitudinal groove 49. The cam 51 is arranged on the rotating shaft 57 at a position opposite to the snap-fit ​​plates 47. One end of the snap-fit ​​plate 47 is in contact with the cam 51, and the other end of the snap-fit ​​plate 47 is fixedly connected to one end of the spring 52. The other end of the spring 52 is fixedly connected to the side of the longitudinal groove 49 away from the rotating shaft 57.

[0080] The snap-fit ​​plate 47 is arranged with through holes 53 corresponding to through holes 50 in a vertical array. On the side of through holes 53 away from the rotating shaft 57, there is an elongated hole 54 that communicates with through holes 53. The length direction of the elongated hole 54 is consistent with the length direction of the snap-fit ​​plate 47, and the width of the elongated hole 54 is smaller than the diameter of through holes 53.

[0081] On both sides of the elongated hole 54, there are inclined surfaces 55 at a predetermined angle to the surface of the snap-fit ​​plate 47. The length direction of the inclined surfaces 55 is consistent with the length direction of the elongated hole 54. The inclined surfaces 55 are used to clamp the connecting post 45.

[0082] The connecting post 45 is a cylinder with a diameter adapted to the through hole 50 and the through hole 53. A plane 56 is symmetrically arranged on the cylindrical surface of one end of the connecting post 45. The plane 56 extends to one end face of the connecting post 45. The distance between the two planes 56 is adapted to the width of the elongated hole 54.

[0083] The working principle of the above technical solution is as follows: the side of the connecting plate 46 is provided with intersecting transverse grooves 48 and longitudinal grooves 49, and a rotating shaft 57 is provided in the transverse groove 48, which penetrates the side wall of the transverse groove 48. The rotating shaft 57 is rotatably set with the connecting plate 46.

[0084] Through holes 50 are arranged in a vertical array on the bottom surface of the longitudinal groove 49. The snap-fit ​​plates 47 are symmetrically arranged in the longitudinal groove 49. The cam 51 is arranged on the rotating shaft 57 at a position opposite to the snap-fit ​​plates 47. One end of the snap-fit ​​plate 47 is in contact with the cam 51, and the other end of the snap-fit ​​plate 47 is fixedly connected to one end of the spring 52. The other end of the spring 52 is fixedly connected to the side of the longitudinal groove 49 away from the rotating shaft 57.

[0085] The snap-fit ​​plate 47 is arranged with through holes 53 corresponding to through holes 50 in a vertical array. On the side of through holes 53 away from the rotating shaft 57, there is an elongated hole 54 that communicates with through holes 53. The length direction of the elongated hole 54 is consistent with the length direction of the snap-fit ​​plate 47, and the width of the elongated hole 54 is smaller than the diameter of through holes 53.

[0086] On both sides of the elongated hole 54, there are inclined surfaces 55 at a predetermined angle to the surface of the snap-fit ​​plate 47. The inclined surfaces 55 are formed by cutting from far to near and from shallow to deep relative to the through hole 53 along the length of the elongated hole 54. The inclined surfaces 55 are used to clamp the connecting post 45.

[0087] The connecting post 45 is a cylinder with a diameter adapted to the through hole 50 and the through hole 53. A plane 56 is symmetrically arranged on the cylindrical surface of one end of the connecting post 45. The plane 56 extends to one end face of the connecting post 45. The distance between the two planes 56 is adapted to the width of the elongated hole 54.

[0088] The rotating shaft 57 can be connected to a hydraulic motor. The hydraulic motor controls the rotation of the rotating shaft so that the long axis or short axis of the cam is aligned with the snap-fit ​​plate, controlling the sliding of the snap-fit ​​plate. A limiting mechanism can also be set in the transverse groove to ensure that the long axis or short axis of the cam can accurately align with the snap-fit ​​plate. In the initial state, the long axis of the cam is aligned with the snap-fit ​​plate, and through hole one and through hole two correspond to each other. The connecting post passes through through hole one and through hole two into the snap-fit ​​plate. At this time, rotating the rotating shaft makes the short axis of the cam aligned with the snap-fit ​​plate. The snap-fit ​​plate is no longer squeezed by the cam and is under the action of the spring. The plate moves towards the horizontal centerline of the connecting plate, the elongated hole contacts the plane of the connecting post, and the inclined surface 55 contacts the shoulder of the connecting post. As the snap-fit ​​plate moves, the inclined surface 55 presses against the shoulder of the connecting post, causing the connecting post to snap onto the snap-fit ​​plate. When it is necessary to remove the connecting post, the rotating shaft is rotated, and the rotating long shaft of the cam presses against the snap-fit ​​plate, causing the snap-fit ​​plate to move away from the horizontal centerline of the connecting plate. The second through hole of the snap-fit ​​plate is opposite to the first through hole of the connecting plate, and the connecting post can be pulled out from the first and second through holes, releasing the snap-fit ​​of the online mixing mold.

[0089] The beneficial effects of the above technical solution are as follows: the snap-fit ​​plate can slide in the longitudinal groove of the connecting plate, the long shaft of the cam can push the snap-fit ​​plate upward to release the snap-fit ​​plate from the connecting column, when the rotating shaft rotates and the short shaft of the cam is opposite to the snap-fit ​​plate, the spring can push the snap-fit ​​plate to clamp the connecting column, thus completing the rapid clamping and loosening of the connecting column.

[0090] The online mixing mold, which is connected to the connecting column, is fastened to the connecting plate on the body of the dispensing machine by a snap-fit ​​plate, so that the online mixing mold is stably connected to the dispensing machine body, reducing the shaking of the online mixing mold and increasing the stability of dispensing.

[0091] The online mixing mold, which is connected to the connecting column, is fastened to the connecting plate on the dispensing machine body by a snap-fit ​​plate, so that the online mixing mold is firmly connected to the dispensing machine body. The online mixing mold is easy and quick to install and disassemble, which improves the efficiency of changing the online mixing mold.

[0092] like Figure 8-10 As shown, in one embodiment, a flange 58 is horizontally arranged on the inner wall of the first feeding port 5 and the second feeding port 9, and an annular sealing groove 59 is provided on the upper surface of the flange 58, and a sealing element 60 is provided in the sealing groove 59.

[0093] Mounting plates 61 are horizontally installed on the outer walls of the first feeding port 5 and the second feeding port 9. A sealing device is installed on the mounting plate. The sealing device includes a sealing door 62, a sealing door support 63, a connecting arm 64, and a mounting support 65 vertically installed on the mounting plate. The sealing door support 63 is fixedly installed on the upper surface of the sealing door 62. The two ends of the connecting arm 64 are rotatably connected to the sealing door support 63 and the mounting support 65, respectively.

[0094] The sealing device also includes a locking mechanism, which includes locking pins 66 symmetrically arranged on the sealing door. The front end of the locking pin 66 is wedge-shaped, and the rear end of the locking pin 66 is rotatably connected to one end of the pull rod 67. The other end of the pull rod 67 is rotatably connected to one end of the crank 68. The crank 68 is L-shaped, and the corner of the crank 68 is rotatably connected to the crank support 69 arranged on the sealing door.

[0095] Locking grooves 70 are provided on the inner walls of the first feeding port 5 and the second feeding port 9 at positions corresponding to the locking pin 66. The shape of the locking grooves 70 is adapted to the wedge shape of the front end of the locking pin 66, and the locking pin 66 is inserted into the locking grooves 70.

[0096] The working principle of the above technical solution is as follows: After raw materials are added to material tanks A and C, vacuuming is required. To ensure the vacuuming effect, sealing devices are installed on the first and second feeding ports. After the raw materials are added, the sealing door 62 is closed, and the lower surface of the sealing door 62 is pressed against the sealing element 60. Then, the crank 68 is rotated clockwise to insert the locking pin 66 into the locking groove 70. The front end of the locking pin 66 and the locking groove 70 are wedge-shaped, which can press the sealing door 62 downward, increasing the tightness between the sealing door 62 and the sealing element 60. At this time, the crank... One end of crank 68 connected to pull rod 67 rests against sealing door 62. The position of the axis connecting crank 68 and pull rod 67 is lower than the line connecting the axis of crank 68 and the axis connecting connecting rod 67 and locking pin 66. Since the front end of locking pin is wedge-shaped, locking pin is subjected to pressure from the wedge-shaped inclined surface to the center of sealing door 62, causing crank 68 and connecting rod 67 to rest against the upper surface of sealing door 62 and lock. Locking pin 66 cannot move backward. When sealing door 62 needs to be opened, crank 68 is rotated counterclockwise to pull locking pin 66 out of locking groove 70 and open sealing door.

[0097] The beneficial effects of the above technical solution are as follows: the sealing door is located on the outside of the flange. When the tank is evacuated, the air pressure at the top of the sealing door is greater than that at the bottom, which makes the sealing door contact the sealing element more tightly and improves the sealing effect. The sealing door and the feed port are connected by a crank, a pull rod and a locking pin. When the sealing door is closed, the crank, pull rod and locking pin can be automatically locked. The structure is simple and easy to operate.

[0098] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0099] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0100] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An online mixing thermoplastic composite material dispensing machine, characterized in that, The container includes material tanks A (4), B (14), C (22), and D (30). The bottom of material tank A (4) is connected to material tank C (22); the bottom of material tank B (14) is connected to material tank D (30); the outlets of material tank C (22) and material tank D (30) are connected to the mixing head (34), which is used to fully mix the raw materials of material tank C (22) and material tank D (30). The mixed raw materials are then injected into the online mixing mold (36). Condensers are installed on tanks A (4), B (14), C (22) and D (30). Vacuum pumps are installed on the outlet of the condensers. The vacuum pumps are used to extract the air from the tanks. The condensers are used to condense the raw materials mixed in the air and return the condensed raw materials to the tanks. Inert gas is injected into the tanks after vacuuming to protect the raw materials. The online mixing mold (36) is connected to the glue dispensing machine frame through a quick-release connection mechanism. The quick-release connection mechanism includes a connecting column (45) and a connecting plate (46). The connecting column (45) is fixedly installed on the online mixing mold (36), and the connecting plate (46) is installed on the glue dispensing machine frame. A snap-fit ​​plate (47) is slidably installed on the connecting plate (46). The snap-fit ​​plate (47) detachably snaps the connecting column (45) onto the connecting plate (46). The side of the connecting plate (46) is provided with intersecting transverse grooves (48) and longitudinal grooves (49). A rotating shaft (57) is provided inside the transverse groove (48) and passes through the side wall of the transverse groove (48). The rotating shaft (57) is rotatably connected to the connecting plate (46). A through hole (50) is arranged in a vertical array on the bottom surface of the longitudinal groove (49). A snap-fit ​​plate (47) is symmetrically arranged in the longitudinal groove (49). A cam (51) is arranged on the rotating shaft (57) at a position opposite to the snap-fit ​​plate (47). One end of the snap-fit ​​plate (47) is in contact with the cam (51). The other end of the snap-fit ​​plate (47) is fixedly connected to one end of the spring (52). The other end of the spring (52) is fixedly connected to the side of the longitudinal groove (49) away from the rotating shaft (57). The snap-fit ​​plate (47) is arranged in a vertical array with through holes two (53) corresponding to through holes one (50). On the side of through holes two (53) away from the rotating shaft (57), there is a long hole (54) communicating with through holes two (53). The length direction of the long hole (54) is consistent with the length direction of the snap-fit ​​plate (47), and the width of the long hole (54) is smaller than the diameter of through holes two (53). On both sides of the elongated hole (54), there are inclined surfaces (55) at a predetermined angle to the surface of the snap-fit ​​plate (47). The inclined surfaces (55) are formed by cutting from far to near and from shallow to deep relative to the through hole (53) along the length of the elongated hole (54). The inclined surfaces (55) are used to clamp the connecting column (45). The connecting post (45) is a cylinder with a diameter that is compatible with the through hole one (50) and the through hole two (53). A plane (56) is symmetrically arranged on the cylindrical surface of one end of the connecting post (45). The plane (56) extends to one end face of the connecting post (45). The distance between the two planes (56) is compatible with the width of the elongated hole (54).

2. The online mixing thermoplastic composite material dispensing machine according to claim 1, characterized in that, Tank A (4) and tank C (22) are connected through a first temperature-controlled pipeline (15). Tank C (22) is connected to the rear of the mixing head (34) through a third temperature-controlled pipeline (33). A first overflow valve (39) is provided between the return port of tank C (22) and the third temperature-controlled pipeline (33). Tank B (14) and tank D (30) are connected by a second temperature-controlled pipeline (16). Tank D (30) is connected to the rear of the mixing head (34) by a fourth temperature-controlled pipeline (35). A second overflow valve (40) is provided between the return port of tank D (30) and the fourth temperature-controlled pipeline (35).

3. The online mixing thermoplastic composite material dispensing machine according to claim 2, characterized in that, The top of material tank A (4) is provided with a first feeding port (5), and the top of material tank C (22) is provided with a second feeding port (9).

4. The online mixing thermoplastic composite material dispensing machine according to claim 3, characterized in that, Ball valve 1 (43) is installed on the first temperature-controlled pipeline (15), ball valve 2 (44) is installed on the second temperature-controlled pipeline (16), and level gauges are installed on tank C (22) and tank D (30) respectively. The opening and closing of ball valve 1 (43) and ball valve 2 (44) are controlled according to the level height measured by the level gauges.

5. The online mixing thermoplastic composite material dispensing machine according to claim 4, characterized in that, Tank A (4), Tank B (14), Tank C (22) and Tank D (30) are all equipped with heating devices, stirring devices, inert gas inlets, safety valves, pressure gauges and condensers.

6. The online mixing thermoplastic composite material dispensing machine according to claim 5, characterized in that, On the third temperature-controlled pipeline (33), filter one (41) and conveying device one (31) are arranged in sequence in the direction away from material tank C (22). On the fourth temperature-controlled pipeline (35), filter two (42) and conveying device two (32) are arranged in sequence in the direction away from material tank D (30). Conveying device one (31) conveys the raw material in material tank C (22) to mixing head (34), and conveying device two (32) conveys the raw material in material tank D (30) to mixing head (34).

7. The online mixing thermoplastic composite material dispensing machine according to claim 3, characterized in that, A flange (58) is horizontally installed on the inner wall of the first feeding port (5) and the second feeding port (9). An annular sealing groove (59) is installed on the upper surface of the flange (58), and a sealing element (60) is installed in the sealing groove (59). Mounting plates (61) are horizontally installed on the outer walls of both the first feeding port (5) and the second feeding port (9). The mounting plates are equipped with... The sealing device includes a sealing door (62), a sealing door support (63), a connecting arm (64), and a mounting support (65) vertically mounted on the mounting plate. The sealing door support (63) is fixedly mounted on the upper surface of the sealing door (62), and the two ends of the connecting arm (64) are rotatably connected to the sealing door support (63) and the mounting support (65), respectively.

8. The online mixing thermoplastic composite material dispensing machine according to claim 7, characterized in that, The sealing device also includes a locking mechanism, which includes locking pins (66) symmetrically arranged on the sealing door. The front end of the locking pin (66) is wedge-shaped, and the rear end of the locking pin (66) is rotatably connected to one end of the pull rod (67). The other end of the pull rod (67) is rotatably connected to one end of the crank (68). The crank (68) is L-shaped, and the corner of the crank (68) is rotatably connected to the crank support (69) arranged on the sealing door. Locking grooves (70) are provided on the inner walls of the first feeding port (5) and the second feeding port (9) at positions corresponding to the locking pin (66). The shape of the locking groove (70) is adapted to the wedge shape of the front end of the locking pin (66), and the locking pin (66) is inserted into the locking groove (70).

Images