Full-automatic assembly line polyurethane casting molding equipment

Abstract

The invention relates to full-automatic assembly line polyurethane casting molding equipment which comprises an annular track, a plurality of molding mechanisms are arranged on the annular track, an annular chain and a driving assembly used for driving the annular chain to conduct transmission are arranged on the inner side of the annular track, and the molding mechanisms are connected to the annular chain and used for being driven by the annular chain. The forming mechanism comprises a bottom frame, a lower mold frame and an upper mold plate arranged on the lower mold frame through a hinge are arranged on the bottom frame, a lower mold is arranged on the lower mold frame, an upper mold matched with the lower mold is fixedly connected to the upper mold plate, and a mold opening and closing mechanism is arranged between the upper mold plate and the lower mold frame. According to the equipment, continuous circulating motion of the forming mechanism is achieved through the annular track and the chain transmission system, and the production efficiency is improved; meanwhile, due to the design of the mold opening and closing mechanism, it is ensured that each mold can automatically complete mold opening and closing actions, manual intervention is reduced, and the automation degree of production is enhanced. In addition, the structure is favorable for realizing compact layout and saving space.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane casting and molding, in particular to a full-automatic assembly line polyurethane casting and molding equipment. Background Art

[0002] In the manufacturing process of polyurethane products, casting molding is a common processing method, in which liquid polyurethane material is injected into a mold and solidified to form a product of the desired shape. Traditional polyurethane casting equipment is usually a single-station operation, that is, only one mold can be processed at a time. This mode is not only inefficient, but also difficult to achieve automation and continuous production.

[0003] With the development trend of industry and the continuous pursuit of efficient production systems, the market has a growing demand for automated production equipment that can improve production efficiency, reduce labor costs, and have high precision and stability. In this context, various forms of automated assembly line polyurethane casting equipment have emerged, aiming to improve production efficiency through integrated solutions.

[0004] However, existing automated assembly line polyurethane casting equipment still has some limitations. For example, some designs fail to fully consider the smoothness and accuracy of mold opening and closing movements; some equipment is not flexible enough in mold transmission, affecting the speed and smooth operation of the entire production line. Summary of the invention

[0005] The present invention proposes a fully automatic assembly line polyurethane casting and molding equipment, which ensures that each mold can accurately complete the process from closing to opening, and at the same time realizes the continuous movement of the mold on the entire annular path, solving the above-mentioned problems existing in the use process of the prior art.

[0006] The technical solution of the present invention is implemented as follows: a fully automatic assembly line polyurethane casting and molding equipment, including a ring track, a plurality of molding mechanisms are arranged on the ring track, a ring chain and a driving component for driving the ring chain for transmission are arranged on the inner side of the ring track, the molding mechanism is connected to the ring chain for being driven by the ring chain, the molding mechanism includes a base frame, a lower mold frame is arranged on the base frame, and an upper mold plate hinged on the lower mold frame, a lower mold frame is arranged on the lower mold frame, an upper mold that matches the lower mold is fixedly connected to the upper mold plate, and an opening and closing mold mechanism is arranged between the upper mold plate and the lower mold frame.

[0007] By adopting the above technical solution, the equipment realizes the continuous cycle movement of the molding mechanism through the circular track and chain transmission system, which improves the production efficiency; at the same time, the design of the mold opening and closing mechanism ensures that each mold can automatically complete the mold opening and closing action, reducing manual intervention and enhancing the degree of automation of production. In addition, this structure is conducive to achieving a compact layout and saving space.

[0008] The present invention is further configured as follows: a plurality of lower die swing angle ears are fixedly connected to the front side of the base frame, a locking seat corresponding to the lower die swing angle ear is fixedly connected to the front side of the lower die frame, a hinged rod is rotatably connected to the lower die swing angle ear, the other end of the hinged rod is rotatably connected to the locking seat, the mold opening and closing mechanism includes a mold opening and closing cylinder, a cylinder seat is fixedly connected to the rear side of the upper mold plate, an opening and closing cylinder is rotatably connected to the cylinder seat, a connecting seat is fixedly connected to the rear side of the lower die frame, the piston rod of the opening and closing cylinder is rotatably connected to the connecting seat, a plurality of wheel groups are fixedly connected to the rear side of the lower die frame, and the wheel groups are used to be rolled on the base frame.

[0009] By adopting the above technical solution, the design of the lower mold swing angle ear, locking seat and hinged rod simplifies the connection between the upper mold plate and the lower mold frame, making the mold opening and closing process more stable and reliable. Using the mold opening and closing cylinder as the power source can accurately control the speed and strength of the mold opening and closing, ensuring the safety and accuracy of the operation, and also facilitating maintenance and adjustment. When opening the mold, with the push of the cylinder, the upper mold plate drives the upper mold to open relative to the lower mold. In this process, the front side of the lower mold frame is pushed forward and lifted upward. The entire mold opening process is stable, and the wheel set provides smooth support for the process of the rear side of the lower mold frame moving forward.

[0010] The present invention is further configured as follows: the lower end of the lower mold is fixedly connected to a lower mold plate, a gap is provided between the lower mold plate and the lower mold frame, guide pillars are fixedly connected to the four outer corners of the lower mold plate, guide sleeves are fixedly connected to the four outer corners of the lower mold frame, the guide pillars are movably fitted on the guide sleeves, a compression spring is provided on the guide pillars, and the two ends of the compression spring are respectively abutted against the lower mold plate and the guide sleeve.

[0011] By adopting the above technical solution, the guide pin and guide sleeve cooperate and the compression spring is used to provide a guiding support for the lower mold and provide appropriate pre-pressure when closing the mold, which helps to improve the molding accuracy and product quality. The presence of the compression spring can also absorb part of the impact force and protect the mold from damage.

[0012] The present invention is further configured as follows: the lower mold frame is fixedly connected to an airbag plate at the lower side of the lower mold plate, an airbag is fixedly provided on the upper side of the airbag plate, and a vent is provided on the airbag that passes downward through the airbag plate.

[0013] By adopting the above technical solution and introducing the airbag plate and the airbag, additional pressure can be provided by inflation during the mold closing process to ensure close contact between the molds, thereby improving the casting effect and reducing product defects.

[0014] The present invention is further configured as follows: a locking rod is fixedly connected to the locking seat, a plurality of mounting seats are fixedly connected to the front side of the upper mold plate, a hook is rotatably connected to the mounting seat, the hook includes a hook portion for hooking the locking rod when the upper mold and the lower mold are closed, a long rod is fixedly connected to the rear end of the hook, a locking cylinder seat is fixedly connected to the upper side of the locking seat, a locking cylinder is rotatably provided on the locking cylinder seat, a locking connecting rod is rotatably connected to the piston rod of the locking cylinder, and the locking connecting rod is connected to the long rod.

[0015] By adopting the above technical solution, the locking device composed of the locking rod, hook, and mold locking cylinder can firmly fix the upper and lower molds together in the mold closing state, preventing the mold from loosening due to external vibration or pressure changes caused by the internal airbag and spring, thereby ensuring the stability of the molding process. The mechanism driven by the mold locking cylinder also increases the flexibility and response speed of the system.

[0016] The present invention is further configured as follows: a ejector rod is provided on the lower die, a ejector opening is opened on the lower die, the ejector opening passes downward through the lower die plate, the ejector rod is slidably arranged on the ejector opening, and a ejector driving mechanism is provided below the ejector rod for driving the ejector rod to move upward when the upper die and the lower die are opened.

[0017] By adopting the above technical solution, the design of the ejector rod allows the finished product to be automatically ejected after demoulding, avoiding the inconvenience and potential risks caused by manual removal. The ejector drive mechanism ensures the smoothness of the ejection action and improves work efficiency.

[0018] The present invention is further configured as follows: the ejection driving mechanism includes a driving rod, a middle connecting rod, a limiting column and a mounting bracket, an operating port is provided on the airbag and the airbag plate, the airbag plate is fixedly connected to a fixed plate at the lower side of the operating port, the driving rod is rotatably connected to the fixed plate, the two ends of the middle connecting rod are respectively rotatably connected to the ejection rod and the driving rod, the mounting bracket is fixedly connected to the base frame, the two ends of the limiting column are connected to the mounting bracket, the driving rod is provided with a movable long groove along its length direction, and the limiting column is located in the movable long groove.

[0019] By adopting the above technical solution, the structure realizes that the ejector rod is lifted up when the mold is opened through the drive rod, middle connecting rod and other components, and automatically resets downward when the mold is closed. The design of the limit column and the movable long groove limits the movement range of the drive rod, ensuring the accuracy and safety of the ejector action. This design not only improves the convenience of operation, but also enhances the reliability and durability of the system.

[0020] The present invention is further configured as follows: the upper end of the ejector rod is fixedly connected to a limit plate, the lower mold is provided with a limit groove for accommodating the limit plate, the mounting bracket is provided with movable openings at both ends of the limit column, the two ends of the limit column are fixedly connected with sliders slidably arranged in the movable opening, and the mounting bracket is provided with a positioning spring located at the rear side of the slider in the movable opening.

[0021] By adopting the above technical scheme, the design of the limit plate and the accommodating limit groove prevents the ejector rod from completely withdrawing from the ejector hole, ensuring that the upper side of the limit plate is flush with the bottom of the lower mold. In addition, the limit column is set in the movable mouth by sliding the slider, and the position is maintained by the positioning spring, which can help avoid the excessively high requirements for precision of the structure, and can also avoid the problem of jamming caused by the limit plate having completely entered the accommodating limit groove, but the upper mold and the lower mold have not been completely closed. In addition, in the production process where the upper mold and the lower mold are in the open mold state, the material must be injected into the lower mold before the upper mold and the lower mold can be completely covered for molding, the structure can reset the ejector rod downward to the state where the limit plate enters the accommodating limit groove, but the upper mold and the lower mold have not been completely closed. At this moment, the material is poured into the lower mold, and then the upper and lower molds are completely closed. In the subsequent mold closing process, the limit column can drive the slider to compress the positioning spring to move backward, thereby ensuring that the mold closing is completed accurately without getting stuck, and ensuring that the existence of the ejector rod will not affect the pouring of the material into the lower mold in the open mold state.

[0022] The present invention is further configured as follows: the mounting bracket is fixedly connected with a guide rod in the movable opening, a positioning sliding opening for the guide rod to pass through is provided on the sliding block, and the positioning spring is sleeved on the guide rod.

[0023] By adopting the above technical solution, the combination of the guide rod and the positioning slide and the positioning spring sleeved on the guide rod further enhance the guiding performance of the slider and the positioning spring and maintain the stability of the structure.

[0024] The present invention is further configured as follows: a mold frame chain connecting ear is connected to the rear side of the lower mold frame, a bridge block is rotatably connected to the mold frame chain connecting ear, a bridge connecting block is rotatably connected to the bridge block, the bridge connecting block is connected to the annular chain, positioning wheels are provided below the left and right sides of the lower mold frame, a positioning track for the positioning wheels to movably cooperate is provided on the annular track, and a control electrical box group connected to the annular chain is also provided on the annular track.

[0025] By adopting the above technical solution, the design of the mold frame chain connecting ear, bridge block and bridge connecting block enables the molding mechanism to be more firmly connected to the ring chain, ensuring that it moves synchronously with the chain. The coordination of the positioning wheel and the positioning track ensures that the molding mechanism runs accurately along the predetermined path, while the control electric box group is responsible for coordinating the work of various components to maintain the overall rhythm of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 labor.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after a part of the forming mechanism is removed; Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A; Figure 4 It is a structural schematic diagram of the annular track and annular chain part in the invention; Figure 5 It is a first structural schematic diagram of the forming mechanism in the present invention; Figure 6 It is a second structural schematic diagram of the forming mechanism in the present invention; Figure 7 It is a third structural schematic diagram of the forming mechanism in the present invention; Figure 8 It is a fourth structural schematic diagram of the forming mechanism in the present invention; Fig. 9 It is a structural schematic diagram of the molding mechanism of the present invention after a part of the base frame is removed; Fig.10 A top view of the molding mechanism in the present invention; Fig.11 for Fig.10 Schematic diagram of the cross-section structure at AA; Fig.12 It is a structural schematic diagram of the upper mold, the ejector rod, the driving rod, the middle connecting rod and the mounting bracket of the present invention; Fig.13 It is a schematic diagram of the structure of the mounting bracket and the limiting column part in the present invention.

[0028] In the figure: 1. annular track; 2. annular chain; 3. sprocket; 4. reduction motor; 5. forming mechanism; 6. bottom frame; 7. lower mold frame; 8. upper mold plate; 9. lower mold; 10. upper mold; 11. lower mold plate; 12. airbag plate; 13. airbag; 14. vent; 15. lower mold swing angle ear; 16. locking seat; 17. hinged rod; 18. mold opening and closing cylinder; 19. cylinder seat; 20. connecting seat; 21. wheel set; 22. guide column; 23. guide sleeve; 24. compression spring; 25. locking rod; 26. mounting seat; 27. hook; 28. hook; 29. ​​long rod; 30. Clamping cylinder seat; 31. Clamping cylinder; 32. Clamping connecting rod; 33. Ejecting rod; 34. Ejecting hole; 35. Driving rod; 36. Middle connecting rod; 37. Limiting column; 38. Mounting bracket; 39. Operating port; 40. Fixed plate; 41. Movable long groove; 42. Limiting plate; 43. Accommodating limiting groove; 44. Movable mouth; 45. Slider; 46. Positioning spring; 47. Guide rod; 48. Positioning slide; 49. Mould frame chain connecting ear; 50. Bridge block; 51. Bridge connecting block; 52. Positioning wheel; 53. Positioning track; 54. Control electric box group. DETAILED DESCRIPTION

[0029] The following will be combined with the attached embodiment of the present invention Figure 1-13 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example: like Figures 1 to 13As shown, the present invention discloses a fully automatic assembly line polyurethane casting and molding equipment, including a circular track 1, on which a plurality of molding mechanisms 5 are arranged, and an annular chain 2 and a driving assembly for driving the annular chain 2 for transmission are arranged inside the annular track 1, the driving assembly includes two sprocket wheels 3 and a reduction motor 4 for rotating the driving sprocket wheels 3, the reduction motor 4 drives the sprocket wheels 3 to drive the annular chain 2 for transmission, wherein the molding mechanism 5 is connected to the annular chain 2 for being driven by the annular chain 2, and the molding mechanism 5 specifically includes a base frame 6, on which a lower mold frame 7 and an upper mold plate 8 hingedly arranged on the lower mold frame 7 are arranged, on the lower mold frame 7 is arranged a lower mold 9, on the upper mold plate 8 is fixedly connected an upper mold 10 for matching with the lower mold 9, and an opening and closing mold mechanism is arranged between the upper mold plate 8 and the lower mold frame 7, in actual production, a pouring head can be arranged on one side of the annular track 1 for pouring polyurethane material between the upper mold 10 and the lower mold 9. The present invention continuously drives the molding mechanism 5 to perform continuous cyclic motion through the circular track 1 and the circular chain 2. After the pouring is completed, it moves away. After a certain period of cooling and molding, the mold is opened to take out the molded object, and then the upper and lower molds are cleaned and cooled, and then they are re-transmitted to the pouring position for material pouring. This cycle is repeated. The structure has a high degree of automation, a compact structural layout, and high production efficiency.

[0031] Specifically, a plurality of lower mold swing angle ears 15 are fixedly connected to the front side of the base frame 6, and a locking seat 16 corresponding to the lower mold swing angle ear 15 is fixedly connected to the front side of the lower mold frame 7, and a hinge rod 17 is rotatably connected to the lower mold swing angle ear 15, and the other end of the hinge rod 17 is rotatably connected to the locking seat 16, and a mold opening ear piece 55 is fixedly connected to the rear side of the lower mold frame 7, and an upper mold opening and closing ear 56 rotatably connected to the mold opening ear piece 55 is provided on the rear side of the upper mold plate 8, wherein the mold opening and closing mechanism includes a mold opening and closing cylinder 18, a cylinder seat 19 is fixedly connected to the rear side of the upper mold plate 8, and the cylinder seat 19 is rotatably connected to the mold opening and closing cylinder 18, and a connecting seat 20 is fixedly connected to the rear side of the lower mold frame 7, and the piston rod of the mold opening and closing cylinder 18 is rotatably connected to the connecting seat 20, and a plurality of wheel groups 21 are fixedly connected to the rear side of the lower mold frame 7, and the wheel group 21 is used for rolling on the base frame 6, such as Figures 5 to 8 As shown, it is a structural diagram of the molding mechanism 5 of the present invention after the upper mold 10 and the lower mold 9 are opened. When opening the mold, as the opening and closing mold cylinder 18 pushes, the upper mold plate 8 drives the upper mold 10 to open relative to the lower mold 9. In this process, the front side of the lower mold frame 7 is pushed forward and lifted upward. The entire mold opening process is smooth and stable. The wheel set 21 provides smooth support for the process of the rear side of the lower mold frame 7 moving forward. When closing the mold, as the piston rod of the opening and closing mold cylinder 18 is pulled back, the lower mold frame 7 moves backward, and the upper mold 10 closes toward the lower mold 9.

[0032] In the present invention, the lower end of the lower mold 9 is fixedly connected with the lower mold plate 11, and there is a gap between the lower mold plate 11 and the lower mold frame 7, and the four outer corners of the lower mold plate 11 are fixedly connected with guide pillars 22, and the four outer corners of the lower mold frame 7 are fixedly connected with guide sleeves 23, and the guide pillars 22 are movably matched on the guide sleeves 23. In addition, a compression spring 24 is sleeved on the guide pillar 22, and the two ends of the compression spring 24 are respectively supported on the lower mold plate 11 and the guide sleeve 23. The compression spring 24 is used to support the lower mold plate 11 and the lower mold 9, maintain the gap between the lower mold plate 11 and the lower mold frame 7, and can provide appropriate pre-pressure when the upper mold 10 and the lower mold 9 are closed, which helps to improve the molding accuracy and product quality. In addition, the presence of the compression spring 24 can also absorb part of the impact force and protect the mold from damage.

[0033] Furthermore, the lower mold frame 7 is fixedly connected to an airbag plate 12 on the lower side of the lower template 11, and an airbag 13 is fixedly provided on the upper side of the airbag plate 12. A vent 14 is provided on the lower side of the airbag 13, which passes downward through the airbag plate 12. After the upper mold 10 and the lower mold 9 are closed, gas is injected into the airbag 13 through the vent 14, which can make the airbag 13 expand to fill the gap between the lower mold frame 7 and the lower template 11, and squeeze the lower template 11 upward, thereby ensuring close contact between the molds, thereby improving the casting effect and reducing product defects.

[0034] In order to lock the upper mold 10 and the lower mold 9 after the mold is closed, a locking rod 25 is fixedly connected to the locking seat 16, and a plurality of mounting seats 26 are fixedly connected to the front side of the upper mold plate 8. A hook 27 is rotatably connected to the mounting seat 26. The hook 27 includes a hook portion 28 for hooking the locking rod 25 when the upper mold 10 and the lower mold 9 are closed. A long rod 29 is fixedly connected to the rear end of the hook 27, and a locking cylinder seat 30 is fixedly connected to the upper side of the locking seat 16. A locking cylinder 31 is rotatably provided on the locking cylinder seat 30. The piston rod of the locking cylinder 31 The upper mold 10 is connected to a mold locking link 32, which is connected to the long rod 29. After the upper mold 10 and the lower mold 9 are molded, the mold locking cylinder 31 is pushed forward, and the long rod 29 is driven by the mold locking link 32, and then the hook 27 is driven to swing downward, so that the hook portion 28 of the hook 27 hooks the locking rod 25 on the locking seat 16, so that the upper and lower molds 9 can be firmly fixed together in the mold-closing state, preventing the mold from loosening due to external vibration or pressure changes caused by the internal airbag 13 and the compression spring 24, and ensuring the stability of the molding process. The mechanism driven by the mold locking cylinder 31 also increases the flexibility and response speed of the system. When the mold needs to be opened, after the gas in the airbag 13 is discharged, the mold locking cylinder 31 drives the mold locking link 32 to retract backward, and the long rod 29 will drive the hook 27 to swing upward, so that the hook portion 28 is separated from the locking rod 25, and the mold can be opened at this time.

[0035] In order to enable the present invention to automatically eject the formed material when the mold is opened, so as to facilitate workers to quickly take out the material and improve the degree of automation, the present invention is provided with a ejector rod 33 on the lower mold 9, and a ejector opening 34 is opened on the lower mold 9, and the ejector opening 34 passes downward through the lower mold plate 11, and the ejector rod 33 is slidably set on the ejector opening 34, and a ejector driving mechanism is provided below the ejector rod 33 for driving the ejector rod 33 to move upward when the upper mold 10 and the lower mold 9 are opened.

[0036] Specifically, the ejection drive mechanism includes a drive rod 35, a middle connecting rod 36, a limit column 37 and a mounting bracket 38. An operation port 39 is opened on the airbag 13 and the airbag plate 12. The operation port 39 is used to facilitate the passage and rotation of the drive rod 35 and the middle connecting rod 36. The airbag plate 12 is fixedly connected to a fixed plate 40 at the lower side of the operation port 39. The drive rod 35 is rotatably connected to the fixed plate 40, and the two ends of the middle connecting rod 36 are rotatably connected to the ejection rod 33 and the drive rod 35, respectively. Among them, the mounting bracket 38 is fixedly connected to the base frame 6, and the two ends of the limit column 37 are connected to the mounting bracket 38. The movable long groove 41 is provided in the direction of the lower mold frame 7, and the limiting column 37 is located in the movable long groove 41. During the process of mold opening, since the lower mold frame 7 part will be pushed forward as a whole, the driving rod 35 will swing around the rotating shaft connected to the fixed plate 40 due to the limitation of the limiting column 37, thereby driving the ejection rod 33 to be ejected upward through the middle connecting rod 36. When the mold is closed, the lower mold frame 7 part is reset backward as a whole, and the driving rod 35 drives the ejection rod 33 to retract through the rotation of the middle connecting rod 36. Among them, the design of the limiting column 37 and the movable long groove 41 limits the movement range of the driving rod 35, ensuring the accuracy and safety of the ejection action. This design not only improves the convenience of operation, but also enhances the reliability and durability of the system. The structure takes into account the overall movement trajectory of the lower mold frame 7 when the upper and lower molds are opened, and uses its movement trajectory to achieve the effect of automatic mold opening.

[0037] Furthermore, a limit plate 42 is fixedly connected to the upper end of the ejector rod 33, and a limit groove 43 for accommodating the limit plate 42 is provided on the lower mold 9. When the limit plate 42 completely enters the limit groove 43, the upper end of the limit plate 42 is flush with the upper bottom of the lower mold 9. Furthermore, the mounting bracket 38 is provided with movable openings 44 at both ends of the limit column 37, and the two ends of the limit column 37 are fixedly connected with a slider 45 slidably set in the movable opening 44, and the mounting bracket 38 is provided with a positioning spring 46 located at the rear side of the slider 45 in the movable opening 44. The positioning spring 46 is used to maintain the position of the limit column 37. When the mold is closed, the lower mold frame 7 moves backward. Due to the limitation of the limit column 37, the driving rod 35 rotates through the middle connecting rod 36 to drive the ejector rod 33 to retract. When the limit plate 42 enters the accommodating limit groove 43, the ejector rod 33 can no longer move downward. At this time, if the upper mold 10 and the lower mold 9 are not completely closed, and the lower mold frame 7 continues to move backward, then if the limit column 37 is fixed on the mounting bracket 38, it will be stuck. By setting this structure, when the ejector rod 33 can no longer move downward , so that the limiting column 37 compresses the positioning spring 46 through the slider 45 to move backward, thereby ensuring that the upper mold 10 and the lower mold 9 continue to be molded. In addition, it should be explained that in the pouring process of this example, the polyurethane material is first poured into the lower mold 9 through the pouring head, and then the upper and lower molds are closed. Therefore, before pouring, the structure can first make the upper mold 10 and the lower mold 9 close to a certain extent until the limiting plate 42 enters the accommodating limiting groove 43. Because if the ejector rod 33 is in an ejected state, it will affect the pouring of the polyurethane material and the subsequent molding effect, so the ejector rod 33 should be After the limit plate 42 on 33 enters the accommodating limit groove 43, and the upper mold 10 and the lower mold 9 are still not completely molded, pouring can be carried out. At this time, the material is injected into the lower mold 9, and then the mold is completely closed. Generally, the automatic ejection mechanism linked with the movement of the upper and lower molds is completely ejected when the mold is opened, and can only be completely reset when the mold is completely closed. Therefore, the structure of the present invention can reset the ejection rod in advance when the upper mold 10 and the lower mold 9 are not completely molded, thereby facilitating the pouring of the polyurethane material, and will not affect the subsequent continued mold closing of the upper mold 10 and the lower mold 9.

[0038] Furthermore, the mounting bracket 38 is fixedly connected to a guide rod 47 in the movable opening 44, and a positioning slide 48 is provided on the slider 45 for the guide rod 47 to pass through, and the positioning spring 46 is sleeved on the guide rod 47. The combination of the guide rod 47 and the positioning slide 48 and the positioning spring 46 sleeved on the guide rod 47 further enhances the guiding performance of the slider 45 and the positioning spring 46, thereby maintaining the stability of the structure.

[0039] The specific structure of the forming mechanism 5 connected to the circular chain 2 is: a mold frame chain connecting ear 49 is connected to the rear side of the lower mold frame 7, a bridge block 50 is rotatably connected to the mold frame chain connecting ear 49, and a bridge connecting block 51 is rotatably connected to the bridge block 50, and the bridge connecting block 51 is connected to the circular chain 2. In addition, positioning wheels 52 are provided below the left and right sides of the lower mold frame 7, and a positioning track 53 for the positioning wheels 52 to flexibly cooperate is provided on the circular track 1. Specifically, the positioning track 53 is located on the straight section of the circular track 1. In addition, a control electrical box group 54 connected to the circular chain 2 is also provided on the circular track 1. The power transmission of the present invention can be provided with an annular slip ring device on the annular track 1 for power supply, and the control electric box group 54 has a conductive device that allows power transmission through sliding contact with the slip ring device. By supplying power to the control electric box group 54, since the control electric box group 54 and the molding mechanism 5 move synchronously together with the annular chain 2, the control electric box group 54 and each molding mechanism 5 can be connected through a line to transmit electricity to each molding mechanism 5. In addition, for gas transmission, an air pump and a control valve body can be provided on the control electric box group 54 to supply air to the cylinder and air bag 13 of each molding mechanism 5, or an air pump and a control valve body can be provided on the base frame 6 of each molding mechanism 5 to supply air to the cylinder and air bag 13 on the molding mechanism 5. Since the technology for transmitting electricity to the control electric box group 54 and the gas transmission are both existing technologies and have been widely used, the specific structure will not be described here.

[0040] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic assembly line polyurethane casting equipment, characterized by: It includes an annular track, on which are disposed a plurality of forming mechanisms, an annular chain and a driving assembly for driving the annular chain for transmission are disposed on the inner side of the annular track, the forming mechanism is connected to the annular chain for being driven by the annular chain, the forming mechanism includes a base frame, on which is disposed a lower mold frame, and an upper mold plate hinged on the lower mold frame, the lower mold frame is provided with a lower mold, an upper mold matched with the lower mold is fixedly connected to the upper mold plate, and an opening and closing mold mechanism is disposed between the upper mold plate and the lower mold frame.

2. The fully automatic assembly line polyurethane casting molding equipment according to claim 1 is characterized in that: The front side of the base frame is fixedly connected with a plurality of lower mold swing angle ears, the front side of the lower mold frame is fixedly connected with a locking seat corresponding to the lower mold swing angle ear, the lower mold swing angle ear is rotatably connected with a hinged rod, the other end of the hinged rod is rotatably connected to the locking seat, the mold opening and closing mechanism includes a mold opening and closing cylinder, the rear side of the upper mold plate is fixedly connected with a cylinder seat, the cylinder seat is rotatably connected with the mold opening and closing cylinder, the rear side of the lower mold frame is fixedly connected with a connecting seat, the piston rod of the mold opening and closing cylinder is rotatably connected to the connecting seat, the rear side of the lower mold frame is fixedly connected with a plurality of wheel groups, and the wheel groups are used for rolling on the base frame.

3. The fully automatic assembly line polyurethane casting and molding equipment according to claim 2 is characterized in that: The lower end of the lower mold is fixedly connected to the lower mold plate, and a gap is provided between the lower mold plate and the lower mold frame. Guide pillars are fixedly connected to the four outer corners of the lower mold plate, and guide sleeves are fixedly connected to the four outer corners of the lower mold frame. The guide pillars are movably fitted on the guide sleeves, and a compression spring is provided on the guide pillars, and the two ends of the compression spring are respectively abutted against the lower mold plate and the guide sleeve.

4. The fully automatic assembly line polyurethane casting and molding equipment according to claim 3 is characterized in that: The lower mold frame is fixedly connected with an airbag plate at the lower side of the lower mold plate, an airbag is fixedly provided on the upper side of the airbag plate, and a vent is provided on the airbag passing through the airbag plate downward.

5. The fully automatic assembly line polyurethane casting and molding equipment according to claim 4 is characterized in that: A locking rod is fixedly connected to the locking seat, a plurality of mounting seats are fixedly connected to the front side of the upper mold plate, a hook is rotatably connected to the mounting seat, the hook includes a hook portion for hooking the locking rod when the upper mold and the lower mold are closed, a long rod is fixedly connected to the rear end of the hook, a locking cylinder seat is fixedly connected to the upper side of the locking seat, a locking cylinder is rotatably provided on the locking cylinder seat, a locking connecting rod is rotatably connected to the piston rod of the locking cylinder, and the locking connecting rod is connected to the long rod.

6. The fully automatic assembly line polyurethane casting and molding equipment according to claim 4 is characterized in that: The lower mold is provided with a ejector rod, and the lower mold is opened with an ejector opening, the ejector opening passes downward through the lower mold plate, the ejector rod is slidably arranged on the ejector opening, and a ejector driving mechanism is provided below the ejector rod for driving the ejector rod to move upward when the upper mold and the lower mold are opened.

7. The fully automatic assembly line polyurethane casting and molding equipment according to claim 6 is characterized in that: The ejection driving mechanism includes a driving rod, a middle connecting rod, a limiting column and a mounting bracket. An operating port is provided on the airbag and the airbag plate. The airbag plate is fixedly connected to a fixed plate at the lower side of the operating port. The driving rod is rotatably connected to the fixed plate. Both ends of the middle connecting rod are rotatably connected to the ejection rod and the driving rod respectively. The mounting bracket is fixedly connected to the base frame. Both ends of the limiting column are connected to the mounting bracket. A movable long groove is provided on the driving rod along its length direction, and the limiting column is located in the movable long groove.

8. The fully automatic assembly line polyurethane casting and molding equipment according to claim 7 is characterized in that: The upper end of the ejector rod is fixedly connected to the limit plate, and the lower mold is provided with a limit groove for accommodating the limit plate. The mounting bracket is provided with movable openings at both ends of the limit column, and both ends of the limit column are fixedly connected with sliders slidably arranged in the movable opening. The mounting bracket is provided with a positioning spring located at the rear side of the slider in the movable opening.

9. The fully automatic assembly line polyurethane casting and molding equipment according to claim 8, characterized in that: The mounting bracket is fixedly connected with a guide rod in the movable opening, the sliding block is provided with a positioning sliding opening for the guide rod to pass through, and the positioning spring is sleeved on the guide rod.

10. The fully automatic assembly line polyurethane casting and molding equipment according to claim 1, characterized in that: A mold frame chain connecting ear is connected to the rear side of the lower mold frame, and a bridge block is rotatably connected to the mold frame chain connecting ear, and a bridge connecting block is rotatably connected to the bridge block, and the bridge connecting block is connected to the annular chain. Positioning wheels are provided below the left and right sides of the lower mold frame, and a positioning track for the positioning wheels to flexibly cooperate is provided on the annular track. A control electric box group connected to the annular chain is also provided on the annular track.

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