A continuous injection and injection molding device for multiple workstations

Abstract

This application relates to the field of injection molding technology, and specifically discloses a continuous injection and molding device for multiple workstations, including a central injection mechanism, and a plurality of edge cooling and pressure-holding mechanisms arranged beside the central injection mechanism. A mold mechanism is further provided on each edge cooling and pressure-holding mechanism, and an injection base is provided on the central injection mechanism; an injection device is arranged above the injection base and is used to provide the liquid material required for injection molding; a limiting track has one end arranged between the injection base and the injection device, and the other end of the limiting track extends into the edge cooling and pressure-holding mechanism. The main purpose of the present invention is to achieve a faster, more efficient and stable injection molding process.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and particularly to a continuous injection and molding device for multiple stations. Background Art

[0002] In the field of injection molding, the multi-station continuous injection and molding technology is widely used because it can significantly improve production efficiency. However, in the existing multi-station continuous injection and molding devices, during the process of transferring the mold from the injection station to the cooling and pressure-holding station, there are often problems with insufficient mold stability. Since the material in the mold cavity just after injection is easily affected by external forces or inertia during the transfer process, resulting in slight position deviations, such deviations often affect the accuracy and yield rate of the molded workpieces. In addition, the existing mold transfer mechanisms usually lack effective limiting mechanisms, especially the upper mold lacks precise guidance and positioning during movement, making the mold prone to deformation or misalignment during the transfer process, further reducing production efficiency and product quality. To solve these problems, the present application provides a new type of multi-station continuous injection and molding device. Summary of the Invention

[0003] An embodiment of the present application provides a continuous injection and molding device for multiple stations, mainly aiming to achieve a faster, more efficient and stable injection molding process.

[0004] To achieve the above object, an embodiment of the present application provides a continuous injection and molding device for multiple stations, including a central injection mechanism, and a plurality of side cooling and pressure-holding mechanisms arranged beside the central injection mechanism. Each of the side cooling and pressure-holding mechanisms is further provided with a mold mechanism for providing a cavity for the injection molding material. The central injection mechanism is provided with:

[0005] An injection base;

[0006] An injection device, arranged above the injection base, for providing the liquid material required for injection molding;

[0007] A limiting track, one end of which is arranged between the injection base and the injection device, and the other end of the limiting track extends into the side cooling and pressure-holding mechanism; the entire limiting track is located at the top of the mold mechanism.

[0008] Wherein, the mold mechanisms in different side cooling and pressure-holding mechanisms can all enter onto the injection base one by one through the limiting track and return to the corresponding side cooling and pressure-holding mechanisms for pressure-holding, mold opening and material taking.

[0009] In a feasible implementation manner, the following components are further provided on the central injection mechanism: an injection block is arranged below the injection device, and the injection block can communicate with the mold mechanism; a first hydraulic cylinder is arranged between the injection block and the injection device, and the output end of the first hydraulic cylinder is connected to the injection block; the central upper limit track is in a "well" shape, and the central upper limit track is movably connected below the injection block, and the outer ends of the central upper limit track extend towards the directions of the other edge cooling and pressure maintaining mechanisms; the central lower limit track is of a multi-section structure, and the central lower limit track is fixedly arranged on the top end surface of the injection base and corresponds to the position of the central upper limit track.

[0010] In a feasible implementation manner, the edge cooling and pressure maintaining mechanism includes: a pressure maintaining table is at the same horizontal height as the injection base and is located on the periphery of the injection base, and a mold mechanism is arranged on the pressure maintaining table; two edge lower limit tracks are fixedly arranged on the top end surface of the pressure maintaining table and can be correspondingly connected to the central lower limit track one by one; a fixed seat is arranged above the mold mechanism; a second hydraulic cylinder is arranged on the fixed seat, and the second hydraulic cylinder is used to provide the mold opening power; a material ejecting assembly is fixedly arranged at the bottom end of the pressure maintaining table and can penetrate into the inner side of the mold mechanism to eject the formed material.

[0011] In a feasible implementation manner, the mold mechanism includes: an upper mold assembly can be correspondingly connected to the central upper limit track to form a complete limit track, and an upper mold is further arranged below the upper mold assembly, and an upper moving seat is arranged on the upper mold; a lower mold assembly can be correspondingly connected to the central lower limit track, and a lower mold and a mold base are further arranged above the lower mold assembly, and the mold base is slidably arranged on the edge lower limit track, the lower mold is fixed on the mold base, and a lower moving seat is further arranged on the lower mold.

[0012] In a feasible implementation manner, the upper mold assembly includes: a mold pressing seat is connected to the bottom end of the second hydraulic cylinder; edge upper limit tracks are fixed on the bottom end surface of the mold pressing seat, and the edge upper limit tracks can move down synchronously with the mold pressing seat to apply a downward pressure to the central upper limit track, and the edge upper limit tracks are connected to the upper moving seat.

[0013] In a feasible implementation manner, the following are further provided on the central upper limit track: One end of the telescopic seat is fixedly arranged at the bottom end of the injection block, and the other end is fixed at the top end of the central upper limit track; A plurality of notches are respectively opened at positions on the central upper limit track corresponding to the movement paths of each of the upper moving seats; The abutting surface is horizontal and is fixedly arranged on the top end surface of the side part of each central upper limit track; The upper limit frame is arranged at the top end of the remaining central upper limit tracks except the abutting surface.

[0014] In a feasible implementation manner, the side part upper limit track further includes: A vertical piece; The pressing piece is fixedly arranged at the top end of the vertical piece. In the pressure maintaining state, the pressing piece is on the same plane as the bottom end surface of the upper limit frame and presses above the abutting surface; The lifting piece is fixedly arranged at the bottom end of the vertical piece and protrudes from the vertical piece. The moving wheel in the upper moving seat is located between the pressing piece and the lifting piece.

[0015] In a feasible implementation manner, the following are further provided on the upper moving seat: A transmission rod, which is vertically arranged and extends towards the lower moving seat; A plugging groove is opened in the bottom end surface of the transmission rod.

[0016] In a feasible implementation manner, the following are further provided on the lower moving seat: A driving motor is fixedly arranged in the inner cavity of the lower moving seat. The driving motor is a double-shaft motor, and another roller is arranged on the output end below; A limiting groove is opened at the top end of the lower moving seat; The plugging column is locked on the output end of the driving motor through a coupling and corresponds to the shape of the plugging groove in the transmission rod. The shape of the plugging column is non-cylindrical.

[0017] In a feasible implementation manner, a cylinder is provided on each side part cooling and pressure maintaining mechanism, and the output ends of the cylinders are respectively synchronously connected to the upper die assembly and the lower die assembly.

[0018] A continuous injection and injection molding device for multiple stations provided by the present application realizes continuous injection and injection molding for multiple stations through the combination of a central injection mechanism and multiple side cooling and pressure-holding mechanisms, greatly improving production efficiency; the limiting track plays a role in guiding and limiting the movement of the mold, especially restricting the upper mold in the molding mold to ensure the stability of the mold during the transfer process after injection molding, avoiding position deviation or cavity change of the mold during the transfer, thereby ensuring the processing accuracy and stability; in addition, the mold mechanism enters the injection base in sequence through the limiting track to complete the injection operation, and then returns to the corresponding side cooling and pressure-holding mechanism for pressure-holding, mold opening and material taking operations. This process avoids position deviation or cavity change of the mold during the transfer, improving the qualified rate of workpieces; the double-layer limiting track design enhances the stability of the mold during movement, preventing the mold from shifting, especially when the mold is in a fragile state after injecting liquid material, it can avoid subtle changes in the cavity, improving the accuracy and quality of the finished product; in addition, the second hydraulic cylinder in the side cooling and pressure-holding mechanism realizes efficient mold opening, simplifies the mold opening structure, and improves the finished product rate and processing efficiency of workpieces; therefore, this device ensures smooth connection of each link from injection to molding, mold opening and ejecting, realizing an efficient and stable multi-station continuous injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. shows a schematic structural diagram of the combined state of the continuous injection and injection molding device for multiple stations provided by the embodiment of the present application;

[0020] Figure 2 FIG. shows a schematic structural diagram of the central injection mechanism and one side cooling and pressure-holding mechanism provided by the embodiment of the present application;

[0021] Figure 3 FIG. shows a schematic structural diagram of the central injection mechanism provided by the embodiment of the present application;

[0022] Figure 4 FIG. shows a schematic structural diagram of the side cooling and pressure-holding mechanism provided by the embodiment of the present application;

[0023] Figure 5 FIG. shows a schematic bottom view structural diagram of the central injection mechanism provided by the embodiment of the present application;

[0024] Figure 6 FIG. shows a schematic structural diagram of the central upper limiting track and the central lower limiting track provided by the embodiment of the present application;

[0025] Figure 7 FIG. shows a schematic structural diagram of the upper mold and the lower mold provided by the embodiment of the present application;

[0026] Figure 8The figure shows a partial side view structural schematic diagram of the edge cooling and pressure maintaining mechanism provided by the embodiment of the present application;

[0027] Figure 9 The figure shows a structural schematic diagram of the edge upper limit track provided by the embodiment of the present application;

[0028] Figure 10 The figure shows a structural schematic diagram of the transmission rod and the driving motor provided by the embodiment of the present application;

[0029] Figure 11 The figure shows Figure 6 a partial enlarged view at position A in

[0030] Figure 12 The figure shows Figure 8 a partial enlarged view at position B in

[0031] In the figure: 10, central injection molding mechanism; 20, edge cooling and pressure maintaining mechanism; 30, mold mechanism; 11, injection base; 12, first hydraulic cylinder; 13, limit thread; 14, injection device; 15, injection block; 16, central upper limit track; 17, central lower limit track; 21, pressure maintaining table; 22, edge lower limit track; 23, fixed seat; 24, second hydraulic cylinder; 25, ejecting assembly; 31, upper mold assembly; 32, lower mold assembly; 311, mold pressing seat; 312, edge upper limit track; 313, upper mold; 321, mold seat; 322, lower mold; 161, telescopic seat; 162, notch; 163, abutting surface; 164, upper limit frame; 3121, vertical piece; 3122, pressing piece; 3123, lifting piece; 3131, upper moving seat; 3221, lower moving seat; 31311, transmission rod; 31312, insertion slot; 32211, driving motor; 32212, limit slot; 32213, insertion post. Detailed implementation manners

[0032] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of this specification and the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. Without conflict, the technical features in the embodiments of this specification and the embodiments can be combined with each other.

[0033] In this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. The term "more than two" includes two or more than two cases.

[0034] As Figures 1 to 12 shown, an embodiment of the present application provides a continuous injection and injection molding device for multiple workstations, including a central injection molding mechanism 10 and a plurality of side cooling and pressure holding mechanisms 20 arranged beside the central injection molding mechanism 10. A mold mechanism 30 is further provided on each side cooling and pressure holding mechanism 20. The mold mechanism 30 is used to provide a cavity for the injection molding material. The central injection molding mechanism 10 is provided with: an injection base 11, an injection device 14 and a limit track. The injection device 14 is arranged above the injection base 11 and is used to provide the liquid material required for injection molding. One end of the limit track is arranged between the injection base 11 and the injection device 14, and the other end of the limit track extends into the side cooling and pressure holding mechanism 20. The entire limit track is located at the top of the mold mechanism 30.

[0035] As Figure 1 shown, the central injection mechanism is located in the middle of a plurality of continuous injection and injection molding devices. The number of side cooling and pressure holding mechanisms 20 can be set to three or four. Figure 1 The state when the number of side cooling and pressure holding mechanisms 20 is four is shown in []. Each side cooling and pressure holding mechanism 20 is used to process its own built-in mold components. It is worth mentioning that the cavity shapes in each mold component can be different. For example, by using a plurality of side cooling and pressure holding mechanisms 20 to manufacture different assembly structures one by one, after the material is formed through all the side cooling and pressure holding mechanisms 20, all the components of a set of parts are completed. In this way, through one injection molding operation of all the side cooling and pressure holding mechanisms 20, a plurality of identical or different formed components can be quickly obtained, significantly improving the efficiency of injection molding processing.

[0036] Among them, the mold mechanisms 30 located in different side cooling and pressure holding mechanisms 20 can all enter the injection base 11 one by one through the limit track and return to the corresponding side cooling and pressure holding mechanisms 20 for pressure holding, mold opening and material taking.

[0037] It should be noted that the present device realizes efficient continuous injection molding in multiple stations through the combination of the central injection mechanism 10 and multiple side cooling and pressure maintaining mechanisms 20; the injection base 11 is used to support the injection device 14, and the injection device 14 provides the liquid material required for injection molding and precisely injects it into the cavity in the mold mechanism 30; the limit track plays a role in guiding and limiting the movement of the mold, especially restricting the upper mold in the molding mold. One end of the limit track is connected to the injection base 11 and the injection device 14, and the other end extends to the side cooling and pressure maintaining mechanism 20 to ensure the stability of the mold during the transfer process after injection molding; each mold mechanism 30 enters the injection base 11 in sequence through the limit track to complete the injection operation, and then returns to the corresponding side cooling and pressure maintaining mechanism 20 for pressure maintaining, mold opening and material taking operations. This process avoids the position deviation or cavity change of the mold during the transfer, ensuring the processing accuracy and stability; through such a structural design, the device effectively improves the transmission stability of the mold, reduces the minor deformation or error generated during the transfer of the mold, and thus improves the yield rate of the workpiece.

[0038] As Figure 1 、 Figure 2 、 Figure 3 and Figure 5 shown, in some examples, furthermore, the central injection mechanism 10 is further provided with: a first hydraulic cylinder 12, an injection block 15, a central upper limit track 16 and a central lower limit track 17. The injection block 15 is arranged below the injection device 14, and the injection block 15 can communicate with the mold mechanism 30; the first hydraulic cylinder 12 is arranged between the injection block 15 and the injection device 14, and the output end of the first hydraulic cylinder 12 is connected to the injection block 15; the central upper limit track 16 is in a "well" shape, and the central upper limit track 16 is movably connected below the injection block 15, and the outer ends of the central upper limit track 16 extend towards the other side cooling and pressure maintaining mechanisms 20 respectively; the central lower limit track 17 is a multi-section structure, and the central lower limit track 17 is fixedly arranged on the top end surface of the injection base 11 and corresponds to the position of the central upper limit track 16.

[0039] In this example, the upper part of the first hydraulic cylinder 12 is restricted by the limit thread 13, causing its output end to extend and retract downward. The linkage between the first hydraulic cylinder 12 and the injection block 15 ensures that after the liquid material is heated by the injection device 14, the liquefied material precisely enters the mold mechanism 30 through the injection block 15. The injection block 15 is located below the injection device 14 and can be connected to the mold cavity through the push of the hydraulic cylinder, thus completing the material injection process. The central upper limit track 16 is arranged in a "well" shape and is movably connected below the injection block 15, enabling it to provide guidance for the molds in different side cooling and pressure maintaining mechanisms 20, ensuring that the molds in multiple directions can enter the central injection station one by one and smoothly return to the cooling and pressure maintaining position after injection. The central lower limit track 17 is fixed to the top of the injection base 11 and cooperates with the central upper limit track 16 to form a stable limit channel, ensuring that the mold always remains on the correct path during the entire movement and injection process. Additionally, the double-layer limit track design effectively enhances the stability of the mold during movement, preventing the mold from shifting or deforming. Especially when the mold is in a vulnerable state after the injection of liquid material, it can avoid subtle changes in the cavity, improving the accuracy and quality of the finished product. This makes the entire injection molding, cooling, and pressure maintaining processes closely connected, greatly improving the processing efficiency and product yield.

[0040] As Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 8 , Figure 9 and Figure 12 shown, in some examples, furthermore, the side cooling and pressure maintaining mechanism 20 includes: a pressure maintaining table 21, two side lower limit tracks 22, a fixed seat 23, a second hydraulic cylinder 24, and a knockout assembly 25. The pressure maintaining table 21 is at the same horizontal height as the injection base 11 and is located on the periphery of the injection base 11. The mold mechanism 30 is arranged on the pressure maintaining table 21. The two side lower limit tracks 22 are fixedly arranged on the top end face of the pressure maintaining table 21 and can be correspondingly connected to the central lower limit track 17 one by one. The fixed seat 23 is arranged above the mold mechanism 30. The second hydraulic cylinder 24 is arranged on the fixed seat 23, and the second hydraulic cylinder 24 is used to provide the mold opening power. The knockout assembly 25 is fixedly arranged at the bottom of the pressure maintaining table 21 and can extend into the inside of the mold mechanism 30 to eject the formed material.

[0041] In this example, specifically, the edge cooling and pressure-holding mechanism 20 is kept at the same horizontal height as the injection base 11 through the pressure-holding table 21, enabling the mold mechanism 30 to be smoothly transferred to the pressure-holding station after injection; the two edge lower limit tracks 22 correspond one by one with the central lower limit track 17 to ensure that the mold remains precisely aligned during transfer and prevent path deviation; the fixed seat 23 is arranged above the mold mechanism 30, and the second hydraulic cylinder 24 is installed on the fixed seat 23. When the second hydraulic cylinder contracts, the final mold opening operation is completed, ensuring that the mold can be smoothly opened automatically after cooling and pressure-holding, so as to cooperate with the ejector assembly 25 to quickly complete the workpiece release; the ejector assembly 25 is fixed to the bottom of the pressure-holding table 21 and can extend into the mold to push out the formed workpiece through precise ejecting actions, ensuring that the workpiece is completely demolded without damage; therefore, this example realizes the efficient transfer, stable cooling, and precise ejection of the mold, reduces the errors caused by movement during the molding process, and improves the yield and processing efficiency of the workpiece; through the precise guidance of the limit tracks and the cooperation of the hydraulic system, this device ensures the smooth connection of each link from injection to molding, mold opening, and ejecting, realizing an efficient and stable multi-station continuous injection molding process.

[0042] As Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9 shown, in some examples, furthermore, the mold mechanism 30 includes: an upper mold assembly 31 and a lower mold assembly 32. The upper mold assembly 31 can be correspondingly connected with the central upper limit track 16 to form a complete limit track. A upper mold 313 is further arranged at the lower part of the upper mold assembly 31, and an upper moving seat 3131 is arranged on the upper mold 313; the lower mold assembly 32 can be correspondingly connected with the central lower limit track 17. A lower mold 322 and a mold base 321 are further arranged at the upper part of the lower mold assembly 32. The mold base 321 can be slidably arranged on the edge lower limit tracks 22, the lower mold 322 is fixed on the mold base 321, and a lower moving seat 3221 is further arranged on the lower mold 322.

[0043] In this example, it should be noted that the upper die assembly 31 and the lower die assembly 32 cooperate with each other to complete the injection molding process. The upper die assembly 31 is connected to the central upper limit track 16, thereby providing a force limit that always acts on the upper die assembly 31, ensuring its stable position when the mold moves, avoiding deviation, and tightly fitting on the lower die 322. In addition, an upper moving seat 3131 is provided on the upper die 313. The upper moving seat 3131 can provide power for the upper die assembly 31 during the moving process. Through this power, the precise movement of the upper die between the central injection mechanism 10 and the side cooling and pressure maintaining mechanism 20 can be controlled, and the tight cooperation between the upper die and the lower die during the displacement process can be ensured. The lower die assembly 32 is correspondingly connected to the central lower limit track 17. The die holder 321 thereon can slide on the side lower limit track 22 to ensure the smooth movement and precise positioning of the lower die 322. The lower die 322 is fixed on the die holder 321. A lower moving seat 3221 is also provided on the lower die 322. The lower moving seat 3221 is used to provide the moving power for the lower die 322, so that during the transfer process of the mold in the injection and pressure maintaining links, the two independent parts of the upper die 313 and the lower die 322 can move synchronously on their respective tracks, and each die has its own power with the same speed. Thus, the relative movement between the upper die 313 and the lower die 322 caused by uneven force during the moving process can be effectively avoided, and the forming error of the parts due to the position change of the mold can be reduced. Through this design, the mold mechanism 30 can achieve efficient and stable movement and positioning under the guidance of the limit track, ensuring the consistency of the cavity during the injection molding process, improving the yield rate of the workpiece, and reducing the forming defect rate.

[0044] As Figures 6 to 12 shown, in some examples, further, the upper die assembly 31 includes: a die pressing seat 311 and a side upper limit track 312. The die pressing seat 311 is connected to the bottom end of the second hydraulic cylinder 24. The side upper limit track 312 is fixed on the bottom end face of the die pressing seat 311. The side upper limit track 312 can move downward synchronously with the die pressing seat 311, applying a downward pressure to the central upper limit track 16. The side upper limit track 312 is connected to the upper moving seat 3131.

[0045] In this example, the die holder 311 is connected to the second hydraulic cylinder 24 to provide the power for the up-and-down movement of the die holder 311. The die holder 311 and the side upper limit track 312 are in a fixed connection state. After the die holder 311 moves downward, it is pressed against the central upper limit track 16 by the protruding side upper limit track 312, thus forming a complete movement path for the upper die mold 313. When the upper die mold 313 enters the side cooling and pressure-holding mechanism 20, the upper die mold 313 is clamped in the side upper limit track 312 within the die holder 311. At this time, after the second hydraulic cylinder 24 contracts, it drives the entire die holder 311 to move upward, ensuring that the upper die can perform precise vertical movement during the mold closing and opening operations in the injection process; the mold opening operation is completed; therefore, in this example, through the linear movement combination connection scheme of the side upper limit track 312 and the central upper limit track 16; not only ensures the precise guidance when the mold moves up and down, makes the entire upper die assembly 31 maintain uniform and stable force when stressed, and effectively avoids the problems of dislocation or deformation of the mold caused by uneven force during the injection process; at the same time, based on the design of this combined track, it also improves the automation degree of mold opening, thereby further enhancing the production efficiency of workpieces. Without additional mold opening power, the pressure-holding and mold opening operations can be achieved through the second hydraulic cylinder 24, enhancing the smoothness of the mold during the entire injection molding process and reducing the generation of defective products.

[0046] As Figures 5 to 7 shown, in some examples, further, the central upper limit track 16 is also provided with: a telescopic seat 161, a plurality of notches 162, an abutting surface 163, and an upper limit frame 164. One end of the telescopic seat 161 is fixedly arranged at the bottom end of the injection block 15, and the other end is fixed at the top end of the central upper limit track 16; the plurality of notches 162 are respectively opened at positions on the central upper limit track 16 corresponding to the movement paths of each upper moving seat 3131; the abutting surface 163 is horizontal and is fixedly arranged on the top end surface of the side of each central upper limit track 16; the upper limit frame 164 is arranged at the top end of the remaining central upper limit track 16 except the abutting surface 163.

[0047] In this example, it can be understood that the telescopic seat 161 is connected to the bottom end of the injection block 15 and the top end of the central upper limit track 16. Through its telescopic function, it ensures that the track can be adjusted adaptively according to different mold heights. When the central upper limit track 16 loses external force, the central upper limit track 16 is naturally in the suspended state with the maximum telescopic amount under the restriction of the telescopic seat 161 and will not fall on the lower table surface. When a larger mold with a higher volume enters, it can adaptively lift the track to adjust the height. At the same time, under the pressure of multiple second hydraulic cylinders 24 around, the pressure is applied to the central upper limit track 16 through the side upper limit track 312, and then the pressure provided to the upper mold 313 also keeps the central upper limit track 16 in a fixed position.

[0048] In addition, a plurality of notches 162 are formed in the central upper limit track 16, corresponding to the movement paths of each upper moving seat 3131. The design of these notches 162 provides a moving space for the upper moving seat 3131 to ensure that the mold will not collide with the multi-directional central upper limit track 16 during the movement process; a contact surface 163 is provided at the edge of each central upper limit track 16, and the contact surface 163 is horizontal. Its function is to better receive the pressure from the side upper limit track 312 pressing downward from above, avoid the space for the central upper limit track 16 and the upper mold to move upward, and effectively avoid the slight position deviation caused by external force or inertia when the mold moves up and down; the upper limit frame 164 is located at the top of the track except for the contact surface 163, and the upper limit frame 164 contacts the upper moving seat 3131, so that the pressure of the second hydraulic cylinder 24 is finally applied to the upper moving seat 3131 through the upper limit frame 164. Therefore, the upper moving seat 3131 drives the upper mold 313 to always press down under force and also has the ability to move horizontally. It can be seen that through the limiting effect of the frame, the overall movement track of the mold is further stabilized.

[0049] As Figure 6 、 Figure 7 、 Figure 9 and Figure 11 shown, in some examples, further, the side upper limit track 312 further includes: a vertical piece 3121, a pressing piece 3122 and a lifting piece 3123. The vertical piece 3121; the pressing piece 3122 is fixedly arranged at the top end of the vertical piece 3121. In the pressure-holding state, the pressing piece 3122 is in the same plane as the bottom end surface of the upper limit frame 164 and presses above the contact surface 163; the lifting piece 3123 is fixedly arranged at the bottom end of the vertical piece 3121 and protrudes from the vertical piece 3121. The moving wheel in the upper moving seat 3131 is located between the pressing piece 3122 and the lifting piece 3123.

[0050] In this example, the main structure of the upper limit track 312 on the edge is a vertical piece 3121. The vertical structure makes the overall track not easily deformed when facing vertical pressure. The combination of the pressing piece 3122 and the lifting piece 3123 realizes precise limiting and movement control of the upper moving seat 3131. Specifically, the pressing piece 3122 is located at the top of the vertical piece 3121. Its function is that after the material injection is completed, that is, in the holding pressure state, the pressing piece 3122 and the bottom end of the upper limit frame 164 are on the same horizontal plane. By the combination port, a complete track structure will be formed. At the same time, the pressing piece 3122 will also press on the abutting surface 163 to better transfer the pressure to the central upper limit track 16. The lifting piece 3123 is fixed at the bottom end of the vertical piece 3121 and protrudes from the vertical piece 3121 to play a guiding role. When the mold passes through the injection, it will be moved into the edge cooling and holding pressure mechanism 20 by the power of the upper moving seat 3131 and the lower moving seat 3221. At this time, the moving wheel in the upper moving seat 3131 is between the pressing piece 3122 and the lifting piece 3123. When the cooling and holding pressure are completed, the second hydraulic cylinder 24 contracts, the moving wheel will contact the lifting piece 3123, and under the restriction of the lifting piece 3123, drive the overall upper moving seat 3131 and the upper mold 313 to lift, so that the overall upper mold 313 is lifted, and then an efficient mold opening operation is completed, greatly improving the finished product rate and production efficiency of the workpiece.

[0051] As Figure 10 and Figure 12 shown, in some examples, further, the upper moving seat 3131 is further provided with: a transmission rod 31311 and a plug-in groove 31312. The transmission rod 31311 is vertically arranged and extends in the direction of the lower moving seat 3221. The plug-in groove 31312 is opened in the bottom end face of the transmission rod 31311.

[0052] In this example, the specific structure of the upper moving seat 3131 is further disclosed. In order to reduce the cost and control difficulty of the overall upper die 313, and at the same time ensure that the upper moving seat 3131 and the lower moving seat 3221 can always provide exactly the same moving power to the upper die 313 and the lower die 322, a transmission rod 31311 and a socket slot 31312 are provided on the upper moving seat 3131 to achieve precise docking and stable transmission between the upper die and the lower die. Specifically, the transmission rod 31311 is vertically arranged on the upper moving seat 3131. When the upper die 313 and the lower die 322 are combined, the transmission rod 31311 can enter into the lower moving seat 3221, ensuring that the lower moving seat 3221 can transfer the motion to the upper moving seat 3131 during mold closing, forming a tight transmission connection between the upper and lower dies. A socket slot 31312 is opened at the bottom end of the transmission rod 31311, and this socket slot 31312 is precisely docked with the corresponding part on the lower moving seat 3221 to ensure that there is no misalignment or sliding during the transmission process, thus ensuring the stability and precision of the mold during injection molding.

[0053] In addition, the extended structure of the transmission rod 31311 provides an additional guiding function to help the upper and lower dies align stably during movement, making the entire molding process more reliable, and ultimately improving production efficiency and workpiece quality.

[0054] As Figure 10 shown, in some examples, furthermore, the following are also provided on the lower moving seat 3221: a driving motor 32211, a limit slot 32212, and a socket post 32213. The driving motor 32211 is fixedly arranged in the inner cavity of the lower moving seat 3221. The driving motor 32211 is a double-shaft motor, and another roller is provided on the lower output end. The limit slot 32212 is opened at the top end of the lower moving seat 3221. The socket post 32213 is locked to the output end of the driving motor 32211 through a coupling and corresponds to the shape of the socket slot 31312 in the transmission rod 31311. The shape of the socket post 32213 is non-cylindrical.

[0055] In this example, it can be understood that the drive motor 32211 is a biaxial motor responsible for providing power for the movement of the lower die 322. A set of rollers is connected to its lower output end, and the rollers ensure the smooth movement of the lower die 322 during operation. The limiting groove 32212 is opened at the top of the lower moving seat 3221 to provide an insertion space for the transmission rod 31311. When the transmission rod 31311 is inserted into the limiting groove 32212, the upper die 313 and the lower die 322 form a more stable integral structure. At the same time, the insertion post 32213 is fixed to the output end of the drive motor 32211 through a coupling. The shape of the insertion post 32213 is non-cylindrical to ensure its accurate insertion into the insertion groove 31312 in the transmission rod 31311 of the upper moving seat 3131, forming a reliable transmission connection. The power is finally transmitted to the upper moving seat 3131 through the transmission shaft, so that the upper die 313 and the lower die 322 move respectively relying on their respective force application points during movement. Therefore, the overall die mechanism 30 can not only uniformly receive the pressure applied downward by the top track structure, but also uniformly receive the moving power from the horizontal direction, and cooperate with the roller structure to provide the smoothness of movement, improve the docking accuracy of the upper and lower dies and the uniformity of the force during the mold closing process, and avoid the molding defects caused by inaccurate alignment in traditional injection molding.

[0056] In some examples, further, each edge cooling and pressure maintaining mechanism 20 is provided with a cylinder (not shown in the figure). The output ends of the cylinders are respectively synchronously connected to the upper die assembly 31 and the lower die assembly 32. In this example, the configuration of the cylinders makes the mold move faster during the movement. In order to further improve the moving speed of the die mechanism 30, the cylinder drive method is preferably adopted. When the need for better stability and stable and controllable moving speed is faced, the control scheme of the drive motor 32211 provided in the previous example can be adopted. This application does not limit this.

[0057] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0058] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A multi-station continuous injection molding device, comprising a central injection molding mechanism (10), and a plurality of side cooling and pressure-maintaining mechanisms (20) arranged next to the central injection molding mechanism (10), each of the side cooling and pressure-maintaining mechanisms (20) being further provided with a mold mechanism (30), the mold mechanism (30) being used to provide a cavity for injection molding material, characterized in that: The central injection molding mechanism (10) is provided with: Injection base (11); An injection device (14), arranged above the injection base (11), and used for providing liquid material required for injection molding; a limiting track, one end of which is arranged between the injection base (11) and the injection device (14), and the other end of which extends into the edge cooling and pressure-maintaining mechanism (20); the limiting track is entirely located at the top end of the mold mechanism (30); The mold mechanisms (30) located in different edge cooling and pressure-maintaining mechanisms (20) can all enter the injection base (11) one by one through the limiting track, and return to the corresponding edge cooling and pressure-maintaining mechanism (20) to perform pressure maintenance, mold opening and material removal; The central injection molding mechanism (10) is also provided with: An injection block (15) is arranged below the injection device (14), and the injection block (15) can be connected to the mold mechanism (30); A first hydraulic cylinder (12) is arranged between the injection block (15) and the injection device (14), wherein an output end of the first hydraulic cylinder (12) is connected to the injection block (15); The central upper limit track (16) is in a "well" shape, the central upper limit track (16) is movably connected below the injection block (15), and the outer ends of the central upper limit track (16) extend towards the other side cooling and pressure-maintaining mechanisms (20); The central lower limit track (17) is a multi-section structure, the central lower limit track (17) is fixedly arranged on the top end surface of the injection base (11) and corresponds to the position of the central upper limit track (16); The edge cooling and pressure maintaining mechanism (20) comprises: A pressure-maintaining platform (21) is located at the same level as the injection base (11) and is located on the peripheral side of the injection base (11); a mold mechanism (30) is provided on the pressure-maintaining platform (21); Two side lower limit rails (22) are fixedly mounted on the top end surface of the pressure-maintaining platform (21) and are connected to the central lower limit rail (17) in a one-to-one correspondence; A fixing seat (23) disposed above the mold mechanism (30); A second hydraulic cylinder (24) is mounted on the fixed seat (23), and the second hydraulic cylinder (24) is used to provide mold opening power; A material ejection assembly (25) is fixedly mounted on the bottom end of the pressure-maintaining platform (21) and is capable of penetrating into the inner side of the mold mechanism (30) to eject the molded material; The mold mechanism (30) comprises: An upper mold assembly (31) can be connected to the central upper limit track (16) to form a complete limit track. An upper mold (313) is also provided at the lower part of the upper mold assembly (31), and an upper movable seat (3131) is provided on the upper mold (313); A lower die assembly (32) can be connected to the central lower limit track (17) in correspondence, and a lower die mold (322) and a mold seat (321) are also provided on the upper part of the lower die assembly (32). The mold seat (321) can be slidably arranged on the side lower limit track (22), and the lower die mold (322) is fixed on the mold seat (321). A lower movable seat (3221) is also provided on the lower die mold (322); The upper mold assembly (31) comprises: A die base (311) connected to the bottom end of the second hydraulic cylinder (24); The side upper limit track (312) is fixed on the bottom end surface of the die seat (311), and the side upper limit track (312) can move downward synchronously with the die seat (311) to apply downward pressure to the central upper limit track (16), and the side upper limit track (312) is connected to the upper movable seat (3131); The central upper limit track (16) is also provided with: A telescopic seat (161), one end of which is fixedly disposed on the bottom end of the injection block (15), and the other end of which is fixedly disposed on the top end of the central upper limit track (16); A plurality of notches (162) are respectively provided at positions in the central upper limit track (16) corresponding to the moving path of each upper moving seat (3131); The abutment surface (163) is horizontal and fixedly disposed on the top end surface of the edge of each of the central upper limit rails (16); An upper limit frame (164) is arranged on the top of the remaining central upper limit track (16) except the abutment surface (163); The edge upper limit track (312) further includes: Stand piece (3121); A pressing sheet (3122) is fixedly mounted on the top of the vertical sheet (3121); in a pressure-maintaining state, the pressing sheet (3122) and the bottom end surface of the upper limit frame (164) are in the same plane and are pressed above the abutting surface (163); A lifting sheet (3123) is fixedly arranged at the bottom end of the vertical sheet (3121) and protrudes from the vertical sheet (3121), and the moving wheel in the upper moving seat (3131) is located between the pressing sheet (3122) and the lifting sheet (3123); The upper movable seat (3131) is also provided with: A transmission rod (31311), wherein the transmission rod (31311) is vertically arranged and extends toward the lower movable seat (3221); A plug-in slot (31312) is provided in the bottom end surface of the transmission rod (31311); Each edge cooling and pressure-maintaining mechanism (20) is provided with a cylinder, and the output end of the cylinder is synchronously connected to the upper die assembly (31) and the lower die assembly (32) respectively.

2. A multi-station continuous injection molding device according to claim 1, characterized in that: The lower movable seat (3221) is also provided with: A driving motor (32211) is fixedly arranged in the inner cavity of the lower moving seat (3221), wherein the driving motor (32211) is a double-axis motor, wherein another roller is arranged on the lower output end; A limiting groove (32212) is provided at the top end of the lower movable seat (3221); The plug-in column (32213) is locked on the output end of the driving motor (32211) through a coupling and corresponds to the shape of the plug-in groove (31312) in the transmission rod (31311). The shape of the plug-in column (32213) is non-cylindrical.

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