Rubber injection molding machine and its main body

Abstract

The application discloses a rubber injection molding machine and a main body thereof. The main body comprises a frame, an injection machine, an opening and closing mold mechanism and a power mechanism. The opening and closing mold mechanism comprises a mold frame, an upper mounting body and a lower mounting seat. The upper mounting body comprises a nozzle, a main flow channel, a branch flow channel, an opening and closing driver, a bearing body, an upper mold heating plate, an upper mold heat insulation plate and an upper mold cooling plate. The nozzle is fixedly arranged in the upper mold cooling plate, the upper mold heat insulation plate and the upper mold heating plate. The upper mold cooling plate and the bearing body jointly form the main flow channel and the branch flow channel. The nozzle is arranged on the upper mold cooling plate or the bearing body and is communicated with the branch flow channel. The opening and closing driver drives the upper mold cooling plate, the upper mold heat insulation plate and the upper mold heating plate to slide relative to the bearing body. The power mechanism drives the injection machine to move to a position corresponding to the nozzle of any opening and closing mold mechanism. The same injection machine can be used to inject materials into the nozzles of different opening and closing mold mechanisms, and the melting and cleaning time can be effectively saved during color changing injection molding.

Description

Technical Field

[0001] This invention relates to the field of rubber injection molding, and more particularly to a rubber injection molding machine and its main body. Background Technology

[0002] With the continuous development of the economy and the continuous progress of society, people's lives are provided with an extremely rich variety of material consumer goods, and footwear is one of them.

[0003] In the production process of footwear products, injection molding machines are indispensable, as they are commonly used equipment for producing shoe soles.

[0004] Currently, in a multi-station automatic rubber injection molding machine disclosed in Chinese patent application number 202211532931.7, the flow channels formed in both the constant temperature runner plate and the upper mold heating component are closed flow channels. When the color of the molded shoe sole needs to be changed, a corresponding color melt is required. At this time, it is necessary to clean the flow channels formed in both the constant temperature runner plate and the upper mold heating component. Therefore, when cleaning the residual material in the flow channel, it is necessary to repeatedly flush the flow channel with new melt, which will result in a large waste of new melt. In addition, for cleaning the solidified residual material in the flow channel, the operator also needs to use a tool to push it out by inserting it into the flow channel, which will make the cleaning very time-consuming.

[0005] Furthermore, in a multi-station automatic rubber injection molding machine disclosed in Chinese patent application number 202211532931.7, the opening and closing process of the upper, middle and lower mold plates in the injection mold requires the flipping drive to drive the side flipping fixed part to pivot relative to the pressing frame through the side flipping drive. This results in a complex structure of the mold pressing mechanism and low opening and closing efficiency of the mold pressing mechanism.

[0006] Therefore, there is an urgent need for a rubber injection molding machine and its main body to overcome one or more of the above-mentioned defects. Summary of the Invention

[0007] The purpose of this invention is to provide a body for a rubber injection molding machine that can effectively save melting and cleaning time during color-changing injection molding.

[0008] Another objective of this invention is to provide a rubber injection molding machine that can effectively save melting and cleaning time during color-changing injection molding.

[0009] To achieve the above objectives, the main body of the rubber injection molding machine of the present invention includes a frame, an injection machine, and an opening and closing mechanism for the opening and closing movement of the injection mold. The opening and closing mechanism comprises multiple opening and closing mechanism rows arranged along the X-axis on the frame, with the injection machine located beside the opening and closing mechanism row. Each opening and closing mechanism includes a mold frame and an upper mounting body and a lower mounting base assembled on the mold frame. The upper mounting body includes a nozzle, a main runner, branch runners extending from the main runner, an opening and closing actuator, a support body assembled and connected to the mold frame, and an upper mold heating plate, an upper mold heat insulation plate, and an upper mold cooling plate arranged and fixed together in sequence upwards. The upper mold heating plate is configured for assembly and connection with the upper mold in the injection mold, and the nozzle is fixedly inserted into the upper mold cooling plate, the upper mold heat insulation plate, and the upper mold heating plate. The upper mold cooling plate and the carrier body, at their facing ends, together form the main runner and the branch runner. The upper mold cooling plate or the carrier body is provided with a nozzle connected to the main runner, and the nozzle is connected to the branch runner. The opening / closing actuator is mounted on the carrier body, and its output end is connected to at least one of the upper mold cooling plate, the upper mold heat insulation plate, and the upper mold heating plate. The opening / closing actuator is configured to drive the upper mold cooling plate, the upper mold heat insulation plate, and the upper mold heating plate to slide and open relative to the carrier body. A power mechanism is mounted between the injection molding machine and the frame, which can drive the injection molding machine to move along the X-axis to a position corresponding to the nozzle of any of the opening / closing mechanisms.

[0010] Compared to existing technologies, this method utilizes a different approach. The upper mold cooling plate and the carrier body, facing each other, jointly form the main runner and branch runners. Furthermore, the opening / closing actuator is configured to drive the upper mold cooling plate, upper mold heat insulation plate, and upper mold heating plate to slide and open relative to the carrier body. Therefore, during color-changing injection molding, the opening / closing actuator keeps the upper mold cooling plate and carrier body in an open position. This exposes the solidified residue in the main runner and branch runners, making it easier for operators to remove it. This effectively saves on melt usage and cleaning time. Additionally, the power mechanism allows for injection operations from the same injection molding machine into nozzles in different opening / closing mold mechanisms.

[0011] To achieve the above objectives, the rubber injection molding machine of the present invention includes an injection mold and the aforementioned main body. The upper mold of the injection mold is assembled on the upper mold heating plate, and the lower mold of the injection mold is assembled on the lower mounting base. Attached Figure Description

[0012] Figure 1 This is a perspective view of the rubber injection molding machine of the present invention.

[0013] Figure 2This is a perspective view of the injection molding machine and the power mechanism assembled together in the rubber injection molding machine of the present invention.

[0014] Figure 3 This is a perspective view of the mold opening and closing mechanism in the rubber injection molding machine of the present invention after the injection mold is in the mold opening position.

[0015] Figure 4 yes Figure 3 The diagram shows a perspective view of the upper mounting body, shaft structure, telescopic actuator, opening and closing actuator, and mold core ejection actuator in the mold opening and closing mechanism.

[0016] Figure 5 yes Figure 4 3D exploded view.

[0017] Figure 6 It is a three-dimensional view of the upper mold cooling plate, upper mold heat insulation plate, upper mold heating plate, nozzle and nozzle assembled together.

[0018] Figure 7 yes Figure 6 A plan view taken along the positive X-axis.

[0019] Figure 8 yes Figure 3 The diagram shows a perspective view of the middle mold moving in and out device, quick drive, mold closing drive and lower mounting base in the mold opening and closing mechanism. At this time, the middle mold is in the moved-out position.

[0020] Figure 9 yes Figure 8 A three-dimensional view from another angle.

[0021] Figure 10 yes Figure 9 A three-dimensional view of the top mount after it has been slid out by the sliding actuator.

[0022] Figure 11 yes Figure 8 A plan view taken along the positive Y-axis.

[0023] Figure 12 yes Figure 3 A plan view of the middle mold moving in and out device in the mold opening and closing mechanism shown.

[0024] Figure 13 yes Figure 12 The exploded diagram.

[0025] Figures 14 to 18 This is a diagram showing the various states of the mold closing mechanism in the rubber injection molding machine of the present invention.

[0026] Figure 19 This is a diagram showing the state of the mold opening and closing mechanism in the rubber injection molding machine of the present invention, in which the middle mold, which is hinged to the upper mold, is opened relative to the upper mold by the opening and closing driver. Detailed Implementation

[0027] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0028] Please see Figure 1 , Figure 3 and Figure 19 The rubber injection molding machine 1000 of the present invention includes a main body 1000a and an injection mold. The injection mold can be divided into two categories, one of which is as follows: Figure 3 The injection mold 200 shown has an upper mold 210 and a middle mold 220 that can move and separate relative to each other along the Z-axis, allowing the upper mold 210 and the middle mold 220 to open and close by movement; another type is... Figure 19 The injection mold 200' shown has its upper mold 210 and middle mold 220' hinged together, so that the upper mold 210 and middle mold 220' can be opened and closed by a pivoting manner.

[0029] And combined Figure 2 The main body 1000a includes an opening and closing mold mechanism 100, a frame 300, an injection molding machine 400, and a power mechanism 500. There are six opening and closing mold mechanisms 100, arranged together on the frame 300 along the X-axis to form an opening and closing mechanism row 1, to meet the opening and closing movement needs of multiple injection molds 200 (200'). The injection molding machine 400 is located beside the opening and closing mold mechanism row 1, for example, but not limited to... Figure 1 The front side is shown. The power mechanism 500 is mounted between the injection molding machine 400 and the frame 300. The power mechanism 500 can drive the injection molding machine 400 to move along the X-axis to a position corresponding to the nozzle 29 of any mold opening / closing mechanism 100, so as to meet the need for the injection molding machine 400 to inject molten material into the nozzle 29. It should be noted that, although... Figure 1 The diagram shows six mold-opening and closing mechanisms 100. Of course, the number can be two, three, or four depending on actual needs. Each mold-opening and closing mechanism 100 is responsible for the opening and closing movement of one injection mold 200 (200'). Furthermore, to improve the automation level of the rubber injection molding machine 1000 of this invention, the main unit 1000a also includes a controller 600. Optionally, as an example, the controller 600 is a PLC controller. The controller 600 is electrically connected to the injection machine 400, the power mechanism 500, and the mold-opening and closing mechanisms 100, respectively, and controls the injection machine 400, the power mechanism 500, and the mold-opening and closing mechanisms 100 to coordinate their operation. More specifically, as follows:

[0030] like Figure 1As shown, the frame 300 is a square frame to accommodate installation in square spaces; the frame 300 has a suction port 310 located directly above the mold opening and closing mechanism 100, which helps to remove waste gas generated during operation in a timely manner, ensuring the cleanliness of the working environment.

[0031] like Figure 1 and Figure 2 As shown, the power mechanism 500 includes a slide 510 slidably mounted on the frame 300 along the X-axis, a linear rack 520 fixedly mounted on the frame 300 and extending along the X-axis, a rotary motor 530 fixedly mounted on the slide 510, and a gear 540 fixedly fitted onto the output end 531 of the rotary motor 530. The linear rack 520 is located below the slide 510, and the gear 540 meshes with the linear rack 520. The injection molding machine 400 is fixedly mounted on the slide 510. This design allows the rotary motor 530 to slide along with the slide 510, thus saving space and ensuring the accuracy and reliability of the sliding of the slide 510 and the injection molding machine 400. Specifically, as an example, the slide 510 and the linear rack 520 are both located directly above the frame 300, the output end 531 of the rotary motor 530 is arranged downwards, and the injection molding machine 400 is located directly above the slide 510; this design ensures the simplicity of the main body 1000.

[0032] like Figures 3 to 6As shown, the mold opening and closing mechanism 100 includes a mold base 10 and an upper mounting body 20 and a lower mounting base 30 mounted on the mold base 10. The lower mounting base 30 is used for assembly connection with the lower mold 230 in the injection mold 200 (200'). The upper mounting body 20 includes a nozzle 21, a main runner 22, a branch runner 23 branching from the main runner 22, an opening and closing actuator 24, a support body 25 assembled and connected to the mold base 10, and an upper mold heating plate 26, an upper mold heat insulation plate 27, and an upper mold cooling plate 28 arranged and fixed together in sequence upwards. The upper mold heating plate 26 is configured for assembly connection with the upper mold 210 in the injection mold 200 (200'). The nozzle 21 is fixedly inserted into the upper mold cooling plate 28, the upper mold heat insulation plate 27, and the upper mold heating plate 26 to ensure that the nozzle 21, the upper mold cooling plate 28, the upper mold heat insulation plate 27, and the upper mold heating plate 26 are fixed together. The nozzle 21 is connected to the runner 23 to meet the need for the molten material in the runner 23 to flow to the nozzle 21. The ends 281 (251) of the upper mold cooling plate 28 and the carrier 25 facing each other are joined together to form the main runner 22 and the runner 23. The upper mold cooling plate 28 is provided with a nozzle 29 that is connected to the main runner 22 to meet the need for the molten material injected into the nozzle 29 by the injection molding machine 400 to flow into the main runner 22; obviously, in other embodiments, the nozzle 29 may be provided on the carrier 25. The opening and closing actuator 24 is mounted on the carrier 25, and the carrier 25 provides support for the opening and closing actuator 24. The output end of the opening and closing actuator 24 is assembled and connected to the upper mold cooling plate 28. Of course, depending on actual needs, the output end can also be assembled and connected to the upper mold heat insulation plate 27 or the upper mold heating plate 26, or the output end can be assembled and connected to two or three of the upper mold cooling plate 28, the upper mold heat insulation plate 27 and the upper mold heating plate 26. The opening and closing actuator 24 is configured to drive the upper mold cooling plate 28, the upper mold heat insulation plate 27 and the upper mold heating plate 26 to slide open and close relative to the carrier 25 together, so as to meet the need for the opening and closing of the end 281 of the upper mold cooling plate 28 and the end 251 of the carrier 25. It should be noted that, since the upper mold 210 is assembled at the upper mold heating plate 26, the upper mold 210 slides along with the upper mold cooling plate 28, the upper mold heat insulation plate 27, and the upper mold heating plate 26 during the opening and closing sliding relative to the support body 25. A more detailed description of the opening and closing mold mechanism 100 is provided below.

[0033] like Figure 3 As shown, the mold frame 10 includes a mold frame base 11 fixed to the frame 300 and a first support arm 12 and a second support arm 13 fixedly connected to the mold frame base 11 and spaced apart from each other along the X-axis. As an example, in Figure 3In this design, the mold base 11 is sandwiched between the first support arm 12 and the second support arm 13 to make the structure of the mold base 10 more compact. Simultaneously, the first support arm 12 and the second support arm 13 each protrude upwards from the mold base 11 along the Z-axis and are assembled and connected to the carrier body 25. The first support arm 12 and the second support arm 13 together provide support for the carrier body 25, thereby allowing the upper mounting body 20 to be suspended above the mold base 11 via the carrier body 25. The lower mounting seat 30 is located in the gap 14 between the first support arm 12 and the second support arm 13. The lower mounting seat 30 is also located between the upper mounting body 20 and the mold base 11 to allow the lower mounting seat 30 to move closer to or further away from the upper mounting body 20 within the gap 14. Furthermore, the upper mold heating plate 26, the upper mold heat insulation plate 27, and the upper mold cooling plate 28 are located in the gap 14 between the first support arm 12 and the second support arm 13. Therefore, by placing the upper mold heating plate 26, the upper mold heat insulation plate 27, the upper mold cooling plate 28 and the lower mounting base 30 in the gap 14, the size of the mold frame 10 in the X-axis direction is effectively prevented from increasing. Thus, the gap between the mold opening and closing mechanisms 100 can be made more compact.

[0034] like Figure 1 ,as well as Figures 8 to 11 As shown, the mold opening and closing mechanism 100 also includes a quick drive 40 and a mold closing drive 50 located below the lower mounting base 30. Both the quick drive 40 and the mold closing drive 50 are fixedly mounted in the mold frame base 11, which provides support for them without occupying external space. The output ends 41 (51) of both the quick drive 40 and the mold closing drive 50 are respectively assembled and connected to the lower mounting base 30. The mold closing drive 50 moves the lower mounting base 30 towards the upper mounting body 20 as driven by the quick drive 40. Figure 18 When the preset position is shown, a clamping force is applied to the lower mounting base 30 to meet the clamping requirements of the injection mold 200 (200'). Therefore, with the cooperation of the quick-acting driver 40 and the clamping driver 50, during the clamping process, the quick-acting driver 40 drives the lower mounting base 30 to slide rapidly toward the upper mounting body 20 to the preset position, and then the clamping driver 50 applies a clamping force to the lower mounting base 30; while during the mold opening process, the clamping driver 50 does not work, and the quick-acting driver 40 drives the lower mounting base 30 to quickly return to its original position; therefore, the mold opening and closing mechanism 100 improves the mold opening and closing efficiency of the injection mold 200 and also has the advantage of structural simplification. Specifically, combined with... Figures 8 to 11Two quick-acting actuators 40 are arranged diagonally opposite each other on the lower mounting base 30 to ensure the smoothness and stability of the quick-acting actuators 40 driving the lower mounting base 30 to rise and slide. Of course, depending on actual needs, the number of quick-acting actuators 40 can also be three, four, or five. In addition, multiple quick-acting actuators 40 can be designed to be arranged at intervals on opposite sides of the lower mounting base 30. When there are multiple quick-acting actuators 40, all quick-acting actuators 40 are arranged around the mold closing actuator 50 to ensure the reliability of the mold closing actuator 50 in applying force to the lower mounting base 30. More specifically, in Figure 3 ,as well as Figures 8 to 11 In this configuration, when two quick-acting actuators 40 are diagonally arranged opposite each other on the lower mounting base 30, an auxiliary guide rod 42 is fixed at each of the two corners of the lower mounting base 30 adjacent to the quick-acting actuator 40. The auxiliary guide rods 42 also extend downwards into the mold base 11. This design aims to improve the smoothness and stability of the quick-acting actuator 40 driving the lower mounting base 30 to move up and down. For example, the quick-acting actuator 40 may be a pneumatic cylinder, and the mold clamping actuator 50 may be a hydraulic cylinder, such as, but not limited to, an oil cylinder, so that the mold clamping actuator 50 can provide a greater clamping force than the quick-acting actuator 40, thereby ensuring the reliability of mold clamping.

[0035] like Figure 3 ,as well as Figures 8 to 13 As shown, the mold opening and closing mechanism 100 also includes a middle mold moving in and out device 60. The middle mold moving in and out device 60 includes an assembly and fixing structure 61, a first vertical wall 62 located between the first support arm 12 and the lower mounting base 30, a second vertical wall 63 located between the second support arm 13 and the lower mounting base 30, a first sliding arm 64 located above the first vertical wall 62 and slidable along the Y-axis direction on the first vertical wall 62, a second sliding arm 65 located above the second vertical wall 63 and slidable along the Y-axis direction on the second vertical wall 63, and a device for driving the first sliding arm 64 and the second sliding arm 65 together as shown in the figure. Figure 16 The move-in position shown and as Figure 15The in / out actuator 66 is shown as switching between the moving and exiting positions. The in / out actuator 66 is mounted on the second vertical wall 63. Obviously, in other embodiments, the in / out actuator 66 can also be mounted on the first vertical wall 62. Alternatively, in order to prevent the in / out actuator 66 from obstructing the movement of the first sliding arm 64, the second sliding arm 65 and the middle mold 220, the in / out actuator 66 is designed to be located outside the gap 623 between the first vertical wall 62 and the second vertical wall 63. Furthermore, the assembly and fixing structures 61 are respectively provided on the first sliding arm 64 and the second sliding arm 65, so that the first sliding arm 64 and the second sliding arm 65 are each provided with the assembly and fixing structure 61. As an example, the assembly and fixing structure 61 on the first sliding arm 64 is located directly above the first sliding arm 64, and the assembly and fixing structure 61 on the second sliding arm 65 is located directly above the second sliding arm 65. The assembly and fixing structure 61 is used to fix the middle mold 220 in the injection mold 200 to both the first sliding arm 64 and the second sliding arm 65, so that the middle mold 220, the first sliding arm 64 and the second sliding arm 65 are fixed together and can slide synchronously. Each of the first support arm 12 and the second support arm 13 is fixed with a blocking and limiting block 67 that protrudes downward from the mounting base 30. Obviously, in other embodiments, the blocking and limiting block 67 can also be fixed on the first support arm 12 or the second support arm 13. The blocking and limiting block 67 is fitted with upper and lower guide rods 68 (68') that can slide up and down along the Z-axis. The upper end of the upper and lower guide rods 68 is assembled and connected to the first sliding arm 64, and the upper end of the upper and lower guide rods 68' is assembled and connected to the second sliding arm 68, so that the upper and lower guide rods 68 (68') make the up and down movement of the intermediate mold moving in and out device 60 more stable and smoother. Among them, the first sliding arm 64 and the second sliding arm 65, together with the intermediate mold 220, slide to the moving position (see Figure 16 or Figure 17When the middle mold 220 is located on the vertical lifting path of the lower mounting base 30, the lower mounting base 30 pushes the middle mold 220 and the middle mold inlet / outlet device 60 upwards during the sliding to the preset position, thereby achieving the purpose of mold closing between the middle mold 220 on the middle mold inlet / outlet device 60 and the upper mold 210 mounted on the upper mounting body 20. When the quick drive 40 drives the lower mounting base 30 to reset downwards, the middle mold inlet / outlet device 60 and the middle mold 220 on it reset downwards by their own weight until the first vertical wall 62 and the second vertical wall 63 are blocked by the blocking limit block 67. At this time, the blocking limit block 67 supports the middle mold inlet / outlet device 60 and the middle mold 220 on it. In this way, the vertical lifting of the middle mold inlet / outlet device 60 and the middle mold 220 on it does not require additional power, thus effectively reducing the number of power drives used. The intermediate mold inlet / outlet device 60 utilizes machinery to replace manual labor in the inlet and outlet operations of the intermediate mold 220, effectively reducing the labor intensity of operators and improving efficiency; simultaneously, it does not occupy additional height space of the mold frame 10. Furthermore, a detailed description of the intermediate mold inlet / outlet device 60 is as follows:

[0036] like Figure 12 and Figure 13 As shown, the intermediate mold inlet / outlet device 60 also includes a rotating shaft 691, a gear 692, and a linear rack 693. The rotating shaft 691 is rotatably mounted on the first vertical wall 62 and the second vertical wall 63, which provide support for the rotating shaft 691, thus effectively ensuring the reliability of the rotation of the rotating shaft 691. The gear 692 is fixedly mounted on the rotating shaft 691 so that the two are fixed together and move together. The inlet / outlet driver 66 is a rotary motor, and the output end of the rotary motor is connected to the rotating shaft 691 to meet the power requirements for the rotary motor to drive the rotating shaft 691 to rotate. The first sliding arm 64 and the second sliding arm 65 are each equipped with a linear rack 693, which meshes with the gear 692 to ensure the synchronous coordination of the sliding of the first sliding arm 64 and the second sliding arm 65 along the Y-axis and the accuracy and reliability of the sliding position. Specifically, in Figure 12 and Figure 13As an example, a reducer 694 is provided between the output end of the rotary motor and the rotating shaft 691. The reducer 694 serves two purposes: firstly, it adjusts the output torque of the rotary motor; secondly, it allows the rotary motor to be arranged along the Z-axis, effectively reducing the space occupied in the X-axis direction. This results in a smaller and more compact space occupied by multiple mold-opening mechanisms 100 of the present invention when arranged in the X-axis direction. Furthermore, a first guide rail 641 is provided on the first sliding arm 64, and a first guide groove 621 is provided on the first vertical wall 62. The first guide rail 641 slides within the first guide groove 621. A linear rack 693 on the first sliding arm 64 is fixedly connected to the first guide rail 641, such that the linear rack 693 is positioned within the first guide groove 621. This arrangement of the first guide rail 641 and the linear rack 693 within the first guide groove 621 further enhances the fit between the first sliding arm 64 and the first vertical wall 62, reducing the space occupied. The space occupied is smaller; the second sliding arm 65 is provided with a second guide rail 651, and the second vertical wall 63 is provided with a second guide groove 631. The second guide rail 651 slides in the second guide groove 631. The linear rack 693 on the second sliding arm 65 is fixedly connected to the second guide rail 651. The linear rack on the second guide rail 651 is placed in the second guide groove 631, so that the fit between the second sliding arm 65 and the second vertical wall 63 is more compact and the space occupied is smaller. More specifically, in Figure 13 In the design, the first guide groove 621 and the second guide groove 631 are each T-shaped grooves, but this is not a limitation. It should be noted that the sliding direction of the first sliding arm 64 and the second sliding arm 65 is the Y-axis direction; in addition, the assembly and fixing structure 61 can be composed of screws and pressure plates.

[0037] like Figure 5 and Figure 6 As shown, the main channel 22 and the branch channel 23 are each opened at the end 281 of the upper mold cooling plate 28 facing the carrier 25. The main channel 22 and the branch channel 23 also penetrate the end face 282 of the upper mold cooling plate 28 facing the carrier 25 to form an opening 221 (231) facing the carrier 25. The carrier 25 covers the opening 221 (231), and the nozzle 29 is located at the side 283 of the upper mold cooling plate 28. This design facilitates the manufacturing and processing of the main channel 22 and the branch channel 23 at the upper mold cooling plate 28, as well as the removal of solidified residue in the main channel 22 and the branch channel 23. Furthermore, the opening and closing actuators 24 are arranged in two pairs, spaced apart by opposite sides of the carrier 25, to ensure the smooth and stable opening and closing of the upper mold cooling plate 28 relative to the carrier 25. Of course, depending on actual needs, there can be three, four, or five opening and closing actuators 24. In addition, there can be multiple opening and closing actuators 24 arranged diagonally across the carrier 25, so the number is not limited to one. Figure 5The description is for illustrative purposes only. More specifically, the cross-sectional profiles of the main flow channel 22 and the branch flow channel 23 are circular or elliptical with a central angle less than or equal to 180 degrees. This design further facilitates the removal of solidified residue within the main flow channel 22 and the branch flow channel 23; additionally, in Figure 6 In this example, the branch channels 23 are four radially arranged from the end of the main channel 22, but this is not a limitation. For example, the opening and closing actuator 24 is a cylinder, but it could also be a hydraulic cylinder.

[0038] like Figures 3 to 5 ,as well as Figures 14 to 16 As shown, the mold opening and closing mechanism 100 also includes a telescopic actuator 70 located outside the gap 14 between the first support arm 12 and the second support arm 13. The telescopic actuator 70 includes an actuator body 71 and a telescopic body 72 that slides telescopically relative to the actuator body 71. The actuator body 71 is pivotally connected to the mold frame 10. Optionally, as an example, the telescopic actuator 70 is located beside the second support arm 12, in which case the actuator body 71 is pivotally connected to the second support arm 13. Obviously, in other embodiments, the telescopic actuator 70 can also be located beside the first support arm 12, in which case the actuator body 71 is pivotally connected to the first support arm 12. Therefore, it is not limited to the figures shown. The carrier 25 is located in the gap 14 between the first support arm 12 and the second support arm 13. The carrier 25 is also rotatably connected to the first support arm 12 and the second support arm 13 respectively by means of a shaft structure 80 to meet the requirement that the carrier 25 can rotate relative to the mold frame 10. The telescopic body 72 is pivotally connected to the shaft structure 80 at a position away from the axis C of the shaft structure 80. Alternatively, as an example, the shaft structure 80 may have a connecting rod 73 that protrudes radially from the shaft structure 80, and the telescopic body 72 is pivotally connected to the connecting rod 73 to better meet the need for the telescopic body 72 to be pivotally connected to the shaft structure 80 at a position away from the axis C of the shaft structure 80. The telescopic actuator 70 is configured to drive the carrier 25 to rotate around the axis C of the shaft structure 80; that is, under the drive of the telescopic actuator 70, the carrier 25 and its components rotate together around the axis C to facilitate the assembly and disassembly operations of the upper mold 210 at the upper mold heating plate 26. For example, the telescopic actuator 70 may be a cylinder or a hydraulic cylinder.

[0039] Among them, such as Figure 19As shown, in order to accommodate the pivoting opening and closing of the intermediate mold 220' hinged to the upper mold 210 in the injection mold 200', the mold opening and closing mechanism 100 further includes an opening and closing actuator 91. The opening and closing actuator 91 includes an actuator body 911 and a telescopic body 912 that slides and extends relative to the actuator body 911. The actuator body 911 is located beside the support body 25 and is also pivotally connected to the support body 25. The telescopic body 912 is arranged to extend downward from the support body 25. The intermediate mold 220' hinged to the upper mold 210 in the injection mold 200' is used to hinge with the telescopic body 912, as shown in the diagram. Figure 19 As shown, for the injection mold 200' where the upper mold 210 and the middle mold 220' are hinged, its opening and closing does not require the use of the middle mold in / out device 60, but only the opening and closing actuator 91. Therefore, the opening and closing mechanism 100 is applicable to a wider range of injection mold types. To enable the opening and closing mechanism 100 to be adapted to cases where the upper mold 210 has a mold core, the opening and closing mechanism 100 also includes a mold core ejection actuator 92, which is mounted on the support body 25, and the support body 25 provides support for the mold core ejection actuator 92; the output end 921 of the mold core ejection actuator 92 is equipped with an ejection guide rod 93, which slides downward through the upper mold cooling plate 28, the upper mold heat insulation plate 27 and the upper mold heating plate 26 to meet the needs of the ejection guide rod 93 to be assembled and connected with the mold core in the upper mold 210. For ease of operation, the lower mounting base 30 can be configured to include a base 31 and a top seat 33 that slides along the Y-axis on the base 31. In this case, a sliding in / out actuator 32 is provided between the base 31 and the top seat 33. The sliding in / out actuator 32 drives the top seat 33, together with the lower mold 230 mounted on the top seat 33, to slide in or out of the gap 14 between the first support arm 12 and the second support arm 13 as needed. For example, the sliding in / out actuator 32, the mold core ejection actuator 92, and the opening / closing actuator 91 can be cylinders or hydraulic cylinders.

[0040] Combination Figures 1 to 18 The following describes the mold closing process of the injection mold 200 achieved by the mold opening and closing mechanism 100: First, the telescopic actuator 70 operates, driving the upper mounting body 20 and its upper mold 210 to rotate 90 degrees clockwise around the axis C of the shaft structure 80, thus achieving the following: Figure 15 The state shown; next, the input / output driver 66 in the intermediate mold input / output device 60 operates, driving the first sliding arm 64, the second sliding arm 65, and the intermediate mold 220 to slide together to the input position, as shown in the figure. Figure 16 and Figure 17As shown; then, the fast drive 40 operates, driving the lower mounting base 30 and its lower mold 230 to slide upward together. During the upward sliding process, the lower mold 230 first contacts the middle mold 220 and then pushes the middle mold 220 together with the middle mold moving in and out device 60 to slide upward until the lower mold 230 and the middle mold 220 and the middle mold 220 and the upper mold 210 are closed, as shown in the figure. Figure 18 As shown. Finally, the mold closing driver 50 applies a mold closing force to the lower mounting base 30 to ensure the reliability of the injection mold 200's mold closing. It should be noted that the above mold closing process is only an example and should not be construed as limiting the mold opening and closing mechanism 100 to only the sequence described above in achieving the mold closing process of the injection mold 200.

[0041] Compared with the prior art, since the ends 281 (251) of the upper mold cooling plate 28 and the carrier 25 facing each other jointly form the main runner 22 and the branch runner 23, and the opening and closing actuator 24 is configured to drive the upper mold cooling plate 28, the upper mold heat insulation plate 27 and the upper mold heating plate 26 to slide open and close relative to the carrier 25 together; therefore, during color change injection molding, the opening and closing actuator 24 keeps the upper mold cooling plate 28 and the carrier 25 in an open position, so that the solidified residue in the main runner 22 and the branch runner 23 is exposed, which makes it easy for the operator to remove the solidified residue from the main runner 22 and the branch runner 23. On the one hand, it can effectively save the use of melt, and on the other hand, it can save cleaning time. In addition, with the help of the power mechanism 500, the same injection machine 400 can be used to inject material into the nozzles 29 of different opening and closing mold mechanisms 100.

[0042] It is worth noting that the intermediate mold inlet / outlet device 60 and the opening / closing actuator 91 are not used simultaneously, but are selected according to the type of injection mold 200 that is not needed. For example, as described above, when facing an injection mold 200 with the upper mold 210 and the intermediate mold 220' hinged together, the opening / closing actuator 91 is used, while the intermediate mold inlet / outlet device 60 is idle. Therefore, during the mold closing process of the injection mold 200', the quick-acting actuator 40 drives the lower mounting base 30 to slide upward together with the lower mold 230 until the lower mold 230 and the intermediate mold 220' are closed. When the upper mold 210 and the intermediate mold 220 in the injection mold 200 need to open and close to each other along the Z-axis, the intermediate mold inlet / outlet device 60 is used, while the opening / closing actuator 91 is idle.

[0043] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A main body of a rubber injection molding machine, comprising a frame, an injection unit, and an opening and closing mechanism for the opening and closing movement of the injection mold, wherein the opening and closing mechanism comprises a plurality of opening and closing mechanism rows arranged together on the frame along the X-axis direction, the injection unit being located beside the opening and closing mechanism row, and the opening and closing mechanism comprising a mold frame and an upper mounting body and a lower mounting base assembled on the mold frame, characterized in that, The upper mounting body includes a nozzle, a main runner, branch runners extending from the main runner, an opening / closing actuator, a support body assembled with the mold frame, and an upper mold heating plate, an upper mold heat insulation plate, and an upper mold cooling plate arranged and fixed together in sequence. The upper mold heating plate is configured for assembly with the upper mold in the injection mold. The nozzle is fixedly inserted into the upper mold cooling plate, the upper mold heat insulation plate, and the upper mold heating plate. The ends of the upper mold cooling plate and the support body facing each other are joined together to form the main runner and the branch runners. The upper mold cooling plate or the support body is provided with... The injection molding machine has a nozzle connected to the main flow channel and a nozzle connected to the branch flow channel. The opening and closing actuator is mounted on the carrier body. The output end of the opening and closing actuator is connected to at least one of the upper mold cooling plate, upper mold heat insulation plate, and upper mold heating plate. The opening and closing actuator is configured to drive the upper mold cooling plate, upper mold heat insulation plate, and upper mold heating plate to slide open and close relative to the carrier body. A power mechanism is mounted between the injection molding machine and the frame. The power mechanism can drive the injection molding machine to move along the X-axis to a position corresponding to the nozzle of any of the opening and closing mold mechanisms.

2. The main body of the rubber injection molding machine according to claim 1, characterized in that, The mold frame includes a mold frame base fixed to the frame and a first support arm and a second support arm fixedly connected to the mold frame base and spaced apart from each other along the X-axis. The first support arm and the second support arm each protrude upward from the mold frame base along the Z-axis and are assembled and connected to the carrier. The lower mounting seat is located in the gap between the first support arm and the second support arm. The lower mounting seat is also located between the upper mounting body and the mold frame base. The upper mold heating plate, the upper mold heat insulation plate and the upper mold cooling plate are located in the gap between the first support arm and the second support arm.

3. The main body of the rubber injection molding machine according to claim 2, characterized in that, The mold opening and closing mechanism further includes a quick drive and a mold closing drive located below the lower mounting base. The quick drive and the mold closing drive are fixedly inserted into the mold frame base. There are multiple quick drives arranged diagonally or along opposite sides of the lower mounting base. All the quick drives are arranged around the mold closing drive. The output ends of both the quick drive and the mold closing drive are respectively assembled and connected to the lower mounting base. When the quick drive drives the lower mounting base to move toward a preset position closer to the upper mounting body, the mold closing drive applies a mold closing force to the lower mounting base.

4. The main body of the rubber injection molding machine according to claim 3, characterized in that, The mold opening and closing mechanism further includes a middle mold moving in and out device. The middle mold moving in and out device includes an assembly and fixing structure, a first vertical wall located between the first supporting arm and the lower mounting base, a second vertical wall located between the second supporting arm and the lower mounting base, a first sliding arm located above the first vertical wall and slidable along the Y-axis on the first vertical wall, a second sliding arm located above the second vertical wall and slidable along the Y-axis on the second vertical wall, and an in / out driver for driving the first and second sliding arms to switch together between an infeed position and an outfeed position. The in / out driver is assembled to the first vertical wall or the second vertical wall. The assembly and fixing structure respectively... The assembly and fixing structure is provided on the first and second sliding arms to fix the middle mold in the injection mold to both the first and second sliding arms. At least one of the first and second supporting arms is fixed with a blocking and limiting block protruding towards the lower mounting seat. The blocking and limiting block is provided with upper and lower guide rods that can slide up and down along the Z-axis. The upper ends of the upper and lower guide rods are assembled and connected to the corresponding first and / or second sliding arms. When the first and second sliding arms, together with the middle mold, slide to the moving position, the lower mounting seat also pushes the middle mold and the middle mold moving in and out device upward during the process of sliding to the preset position.

5. The main body of the rubber injection molding machine according to claim 4, characterized in that, The intermediate mold inlet and outlet device further includes a rotating shaft, a gear, and a linear rack. The rotating shaft is rotatably mounted on the first and second vertical walls. The gear is fixedly mounted on the rotating shaft. The inlet / outlet driver is a rotary motor, and the output end of the rotary motor is connected to the rotating shaft. At least one of the first and second sliding arms is equipped with the linear rack, which meshes with the gear for transmission. The first sliding arm is provided with a first guide rail, and the first vertical wall has a first guide groove in which the first guide rail slides. The second sliding arm is provided with a second guide rail, and the second vertical wall has a second guide groove in which the second guide rail slides. The linear rack on the first sliding arm is fixedly connected to the first guide rail, and the linear rack on the second sliding arm is fixedly connected to the second guide rail. The linear rack on the first guide rail is placed in the first guide groove, and the linear rack on the second guide rail is placed in the second guide groove.

6. The main body of the rubber injection molding machine according to claim 1, characterized in that, The main flow channel and the branch flow channel are each opened at the end of the upper mold cooling plate facing the carrier. The main flow channel and the branch flow channel also penetrate the end face of the upper mold cooling plate facing the carrier to form an open opening facing the carrier. The carrier covers the open opening. The nozzle is located at the side of the upper mold cooling plate. The opening and closing actuators are multiple ones arranged diagonally or along opposite sides of the carrier. The cross-sectional profile of at least one of the main flow channel and the branch flow channel is a circle or ellipse with a central angle less than or equal to 180 degrees.

7. The main body of the rubber injection molding machine according to claim 2, characterized in that, The mold opening and closing mechanism further includes a telescopic actuator located outside the gap between the first and second support arms. The telescopic actuator includes an actuator body and a telescopic body that slides and extends relative to the actuator body. The actuator body is pivotally connected to the mold frame. The carrier body is located in the gap between the first and second support arms. The carrier body is also rotatably connected to the first and second support arms respectively via a shaft structure. The telescopic body is pivotally connected to the shaft structure at a position away from the axis of the shaft structure. The telescopic actuator is configured to drive the carrier body to rotate around the axis of the shaft structure.

8. The main body of the rubber injection molding machine according to claim 1, characterized in that, The mold opening and closing mechanism also includes an opening and closing driver and a mold core ejection driver. The opening and closing driver includes a driver body and a telescopic body that slides and extends relative to the driver body. The driver body is located on the side of the support body and is also pivotally connected to the support body. The telescopic body is arranged to extend downward from the support body. The middle mold in the injection mold, which is hinged to the upper mold, is used to hinge to the telescopic body. The mold core ejection driver is assembled on the support body. The output end of the mold core ejection driver is equipped with an ejection guide rod. The ejection guide rod is slidably inserted downward through the upper mold cooling plate, the upper mold heat insulation plate, and the upper mold heating plate.

9. The main body of the rubber injection molding machine according to claim 1, characterized in that, The power mechanism includes a slide block slidably mounted on the frame along the X-axis, a linear rack fixedly mounted on the frame and extending along the X-axis, a rotary motor fixedly mounted on the slide block, and a gear fixedly fitted onto the output end of the rotary motor. The linear rack is located below the slide block, and the gear meshes with the linear rack. The injection molding machine is fixedly mounted on the slide block. The frame has a suction port located directly above the mold opening and closing mechanism.

10. A rubber injection molding machine, comprising an injection mold, characterized in that, The rubber injection molding machine further includes the main body according to any one of claims 1 to 9, wherein the upper mold of the injection mold is assembled on the upper mold heating plate, and the lower mold of the injection mold is assembled on the lower mounting base.

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