Quickly-spliced injection mold

Abstract

The utility model relates to the field of injection molds, and discloses a quickly spliced injection mold, which comprises a bottom support plate, a lifting plate, a piston rod, a hydraulic cylinder and the like, and realizes efficient production through unique design, on one hand, a pressing rod, a clamping ball, a spring and the like in an upper mold mechanism are matched with each other, so that an upper cavity is conveniently connected with an upper mold plate; on the one hand, the lower template fixing mechanism utilizes a motor to drive a lead screw to drive a clamping plate and accurately control the position of the lower template, and a buffer plate and a second spring are combined, so that the mold replacement time is greatly shortened, the production efficiency is improved, and the lower template fixing mechanism is particularly suitable for the production scene of frequently replacing the mold; precise positioning and stable fixing are achieved by means of automatic control of the motor and the lead screw, the product forming precision is effectively improved, and the service life of the mold is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, specifically a quick-assembly injection mold. Background Technology

[0002] Rapid assembly injection molds are injection molding equipment that enables the rapid installation, disassembly, and replacement of mold components through optimized structural design. In modern manufacturing, injection molds are widely used in the production of plastic products. However, with the increasing market demand for product diversification and customization, the frequency of mold replacement has increased significantly. Traditional mold replacement often takes a long time, affecting production efficiency. Especially in small-batch, multi-variety production modes, rapid assembly and disassembly of molds has become the key to improving production efficiency.

[0003] However, traditional injection molds have shortcomings in design and function. First, the upper mold mechanism and lower mold platen of traditional molds usually rely on bolts or manual tightening for fixing. The disassembly and installation process is cumbersome and time-consuming, which seriously affects production efficiency. Second, the positioning accuracy of the lower mold platen of traditional molds is low and the fixing is not stable enough. It is easy to generate displacement or vibration during injection molding, resulting in product size deviation or surface defects, which affects product quality. These problems not only reduce production efficiency but also increase production costs and restrict the flexibility of enterprises in market competition. To address these issues, we propose a quick-assembly injection mold. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides a quick-assembly injection mold, which solves the above-mentioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a quick-assembly injection mold, comprising a bottom support plate, a lifting plate, a piston rod, and a hydraulic cylinder. Columns are symmetrically fixedly installed on both sides of the upper surface of the bottom support plate. A top plate is fixedly installed on the upper surface of the columns on the bottom support plate. A through sliding hole is opened in the middle of the top plate. Sliding grooves are opened on the opposite surfaces of the columns on the two bottom support plates. A hydraulic cylinder is fixedly installed on the top plate of the bottom support plate. A piston rod is drivenly connected to the hydraulic cylinder. Sliding blocks are symmetrically fixedly installed on both sides of the lifting plate. The sliding blocks on both sides of the lifting plate engage and slide with the sliding grooves on the bottom support plate. The piston rod passes through the sliding hole on the bottom support plate and is fixedly connected to the top surface of the lifting plate. An upper mold mechanism is fixedly installed on the bottom surface of the lifting plate. A lower mold fixing mechanism is provided on the upper surface of the bottom support plate, corresponding to the middle of the columns on the two bottom support plates.

[0008] Preferably, the upper mold mechanism includes an upper template, an upper cavity, and a connecting mechanism. The upper template is fixedly installed on the lower surface of the lifting plate. Connecting holes are provided on both sides of the upper template, and an installation groove is provided on the bottom surface of the upper template. The upper cavity is engaged in the installation groove on the upper template. Fixing holes coaxially corresponding to the connecting holes on the upper template are provided on both sides of the upper cavity, and the fixing holes on the upper cavity are stepped holes. A connecting mechanism is provided in the fixing holes of the upper cavity and the connecting holes on the upper template.

[0009] Preferably, the connecting mechanism includes a pressing rod, a fixed shaft, a spring, a locking ball, and a connecting shaft. The fixed shaft is coaxially fixedly connected to the connecting hole on the upper template. A stepped hole is opened inside the fixed shaft. The pressing rod is coaxially sleeved in the stepped hole of the fixed shaft. A fixed circular plate is fixedly installed on the bottom surface of the pressing rod. A long shaft is fixedly installed on the bottom surface of the fixed circular plate on the pressing rod. A smooth groove is opened on the outer arc surface of the long shaft near the bottom of the pressing rod. A through connecting hole is opened on the upper plane of the connecting shaft. A sliding hole is opened circumferentially on the outer arc surface of the connecting shaft near the bottom of the connecting shaft. A locking ball is slidably connected in the sliding hole on the connecting shaft. The pressing rod is coaxially slidably connected in the connecting hole on the connecting shaft. A spring is fixedly installed on the bottom surface of the fixed circular plate on the pressing rod corresponding to the periphery of the long shaft. The other end of the spring is fixedly connected to the upper plane of the connecting shaft, and the smooth groove on the pressing rod and the locking ball are coaxially aligned.

[0010] Preferably, the snap-fit ​​ball and the larger diameter hole on the upper cavity are coaxially aligned.

[0011] Preferably, the lower template fixing mechanism includes a fixed seat, a clamping plate, a motor, a buffer plate, a lead screw, and a spring. A fixed seat is fixedly installed on the upper surface of the bottom support plate corresponding to the lower part of the upper mold mechanism. A trapezoidal groove is formed in the middle of the upper surface of the fixed seat. A fixed plate is fixedly installed in the middle of the trapezoidal groove on the fixed seat. Threaded holes are symmetrically formed on both sides of the fixed plate. Threaded holes are also symmetrically formed on both sides of the fixed seat. Threaded holes are formed on the two columns of the bottom support plate, corresponding coaxially to the threaded holes on the fixed seat. The outer surfaces of the columns of the bottom support plate correspond to the areas below the threaded holes on the bottom support plate. A support plate is fixedly installed, and a motor is fixedly installed on the support plate on the bottom support plate. A lead screw is symmetrically rotatably connected in two threaded holes on the fixed plate of the fixed seat. The output shaft of the motor passes through the bottom support plate and the threaded holes on the fixed seat and is fixedly connected to the lead screw. A trapezoidal slider is fixedly installed on the bottom surface of the clamping plate. The trapezoidal slider has a threaded hole. The trapezoidal slider on the clamping plate and the trapezoidal groove of the fixed seat are engaged and slidably connected. The threaded hole on the clamping plate is threadedly connected to the lead screw. The clamping plate is C-shaped. A second spring is fixedly installed on the two opposite plates of the clamping plate. A buffer plate is fixedly installed on the other end of the second spring.

[0012] Preferably, the two buffer plates on the clamping plate are engaged with a lower template on their opposing surfaces.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a quick-assembly injection mold with the following advantages:

[0015] 1. This quick-assembly injection mold, through the cooperation of components such as pressing rods, locking balls and springs, makes the connection between the upper cavity and the upper template more convenient. It can be fixed or disassembled with just a simple pressing operation. This design reduces the time for mold replacement and improves production efficiency, and is especially suitable for production environments that require frequent mold changes.

[0016] 2. This quick-assembly injection mold features a lower mold plate fixing mechanism with a motor-driven lead screw and clamping plate design. This allows for precise control of the lower mold plate position. The combination of a buffer plate and spring ensures the stability of the lower mold plate during injection molding. Through the automated control of the motor and lead screw, precise positioning and stable fixing of the lower mold plate are achieved, effectively improving the molding accuracy of the product and the service life of the mold. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a cross-sectional schematic diagram of the lower template fixing mechanism of this utility model;

[0020] Figure 4 This is an exploded view of the connecting mechanism of this utility model.

[0021] In the diagram: 1. Bottom support plate; 2. Fixed seat; 3. Clamping plate; 4. Motor; 5. Buffer plate; 6. Upper template; 7. Lifting plate; 8. Piston rod; 9. Hydraulic cylinder; 10. Pressing rod; 11. Fixed shaft; 12. Lower template; 13. Lead screw; 14. Upper cavity; 15. Spring 1; 16. Clamping ball; 17. Spring 2; 18. Connecting shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 A quick-assembly injection mold includes a bottom support plate 1, a lifting plate 7, a piston rod 8, and a hydraulic cylinder 9. Columns are symmetrically fixedly installed on both sides of the upper surface of the bottom support plate 1. A top plate is fixedly installed on the upper surface of the columns on the bottom support plate 1. A through sliding hole is opened in the middle of the top plate. Sliding grooves are opened on the opposite surfaces of the two columns on the bottom support plate 1. A hydraulic cylinder 9 is fixedly installed on the top plate of the bottom support plate 1. The piston rod 8 is drivenly connected to the hydraulic cylinder 9. Sliding blocks are symmetrically fixedly installed on both sides of the lifting plate 7. The sliding blocks on both sides of the lifting plate 7 are engaged and slidably connected to the sliding grooves on the bottom support plate 1. The piston rod 8 passes through the sliding hole on the bottom support plate 1 and is fixedly connected to the top surface of the lifting plate 7. An upper mold mechanism is fixedly installed on the bottom surface of the lifting plate 7. A lower mold fixing mechanism is set on the upper surface of the bottom support plate 1 between the two columns on the bottom support plate 1.

[0024] Furthermore, the upper mold mechanism includes an upper template 6, an upper cavity 14, and a connecting mechanism. The upper template 6 is fixedly installed on the lower surface of the lifting plate 7. Connecting holes are provided on both sides of the upper template 6, and an installation groove is provided on the bottom surface of the upper template 6. The upper cavity 14 is engaged in the installation groove on the upper template 6. Fixing holes corresponding to the connecting holes on the upper template 6 are provided on both sides of the upper cavity 14, and the fixing holes on the upper cavity 14 are stepped holes. A connecting mechanism is provided in the fixing holes of the upper cavity 14 and the connecting holes on the upper template 6. Not only is the upper cavity 14 fixed, but it also cooperates with the connecting mechanism through the connecting holes on both sides to ensure the quick installation and disassembly of the upper cavity 14. The mounting groove design of the upper template 6 allows the upper cavity 14 to be accurately inserted, ensuring the alignment accuracy between the upper cavity 14 and the lower template 12 during injection molding. The stepped hole design of the upper cavity 14 allows it to be quickly spliced ​​with the upper template 6 through the connecting mechanism. The larger diameter part of the stepped hole corresponds to the snap-fit ​​ball 16, ensuring that the snap-fit ​​ball 16 can be smoothly inserted, thus achieving a stable fixation of the upper cavity 14.

[0025] Furthermore, the connecting mechanism includes a pressing rod 10, a fixed shaft 11, a spring 15, a snap-fit ​​ball 16, and a connecting shaft 18. The fixed shaft 11 is coaxially fixedly connected to the connecting hole on the upper template 6. A stepped hole is formed inside the fixed shaft 11, and the pressing rod 10 is coaxially sleeved within the stepped hole of the fixed shaft 11. A fixed circular plate is fixedly installed on the bottom surface of the pressing rod 10, and a long shaft is fixedly installed on the bottom surface of the fixed circular plate on the pressing rod 10. A smooth groove is formed on the outer arc surface of the long shaft near the bottom of the pressing rod 10. A through connecting hole is formed on the upper plane of the connecting shaft 18, and the outer arc surface of the connecting shaft 18 near the bottom is circular. The connecting shaft 18 has a sliding hole, and a snap-fit ​​ball 16 is slidably connected in the sliding hole. A pressing rod 10 is slidably connected coaxially in the connecting hole on the connecting shaft 18. A spring 15 is fixedly installed on the bottom surface of the fixed circular plate on the pressing rod 10, corresponding to the periphery of the long shaft. The other end of the spring 15 is fixedly connected to the upper surface of the connecting shaft 18. The smooth groove on the pressing rod 10 and the snap-fit ​​ball 16 are coaxially aligned. The fixed shaft 11 has a stepped hole design inside to ensure that the pressing rod 10 can slide smoothly inside it. The cooperation between the stepped hole of the fixed shaft 11 and the pressing rod 10 ensures the stability and reliability of the connecting mechanism.

[0026] Furthermore, the larger diameter hole on the snap-fit ​​ball 16 and the upper cavity 14 are coaxially aligned.

[0027] Furthermore, the lower template fixing mechanism includes a fixed seat 2, a clamping plate 3, a motor 4, a buffer plate 5, a lead screw 13, and a spring 17. A fixed seat 2 is fixedly installed on the upper surface of the bottom support plate 1 corresponding to the lower part of the upper mold mechanism. A trapezoidal groove is formed in the middle of the upper surface of the fixed seat 2. A fixing plate is fixedly installed in the middle of the trapezoidal groove on the fixed seat 2. Threaded holes are symmetrically formed on both sides of the fixing plate. Threaded holes are also symmetrically formed on both sides of the fixed seat 2. Threaded holes coaxially corresponding to the threaded holes on the fixed seat 2 are formed on the two columns of the bottom support plate 1. A support plate is fixedly installed below the threaded holes on the bottom support plate 1 on the outer side of the columns of the bottom support plate 1. A motor 4 is fixedly installed on the support plate on the bottom support plate 1. The fixing plate on the fixed seat 2... Two threaded holes are symmetrically connected to lead screws 13. The output shaft of motor 4 passes through the threaded holes on the bottom support plate 1 and the fixed seat 2 and is fixedly connected to lead screws 13. A trapezoidal slider is fixedly installed on the bottom surface of clamping plate 3. The trapezoidal slider has a threaded hole. The trapezoidal slider on clamping plate 3 and the trapezoidal groove on fixed seat 2 are engaged and slidably connected. The threaded hole on clamping plate 3 is threadedly connected to lead screw 13. Clamping plate 3 is "C" shaped. Spring 17 is fixedly installed on the two opposite plates of clamping plate 3. Buffer plate 5 is fixedly installed on the other end of spring 17. Buffer plate 5, through its cooperation with spring 17, ensures the stability of lower mold plate 12 during injection molding. The design of buffer plate 5 effectively reduces the impact on lower mold plate 12 during injection molding and improves the molding accuracy of the product.

[0028] Furthermore, the two buffer plates 5 on the clamping plate 3 are in-planely engaged with the lower template 12.

[0029] Structural Description:

[0030] Bottom support plate 1: Bottom support plate 1 is the basic support structure of injection mold. It is located at the bottom of the mold. Columns are symmetrically installed on both sides of the upper surface to provide the installation base for components such as top plate and lifting plate. At the same time, a lower template fixing mechanism is set at the corresponding position above it to support and position the lower template. It is a key support component for the stable operation of the entire mold.

[0031] Fixed seat 2: Fixed seat 2 is installed on the bottom support plate 1, located below the upper mold mechanism. A trapezoidal groove is opened in the middle of its surface, and a fixed plate is in the middle of the groove. Threaded holes are provided on both sides and on both sides of the fixed plate for cooperating with the lead screw 13. Fixed seat 2 is connected to the column on the bottom support plate 1 through these threaded holes, together forming the basic frame for fixing the lower mold plate, providing installation positions for components such as clamping plate 3 and motor 4, ensuring that the lower mold plate 12 is installed stably and ensuring the accuracy of the injection molding process.

[0032] Clamping plate 3: The bottom surface of clamping plate 3 has a trapezoidal slider, which is engaged and slidably connected with the trapezoidal groove of the fixed seat 2, and its threaded hole is threadedly connected to the lead screw 13. Clamping plate 3 is "C" shaped, which is convenient for clamping the lower mold plate 12. When the motor 4 drives the lead screw 13 to rotate, clamping plate 3 can move along the trapezoidal groove of the fixed seat 2 to realize the clamping and releasing operation of the lower mold plate 12. Together with buffer plate 5 and spring 17, it ensures the stability of the lower mold plate 12 during the injection molding process.

[0033] Motor 4: Motor 4 is installed on the support plate on the outside of the column of the bottom support plate 1. Its output shaft passes through the threaded hole on the bottom support plate 1 and the fixed seat 2 and is fixedly connected to the lead screw 13. Motor 4 serves as a power source to provide power to the fixing mechanism of the lower template 12. By controlling the forward and reverse rotation and speed of motor 4, the rotation of lead screw 13 can be precisely adjusted, thereby controlling the movement of clamping plate 3, realizing the precise positioning and fixing of lower template 12, and ensuring the efficient operation of injection mold.

[0034] Buffer plate 5: The buffer plate 5 is installed on two opposite plates of the clamping plate 3, located between the clamping plate 3 and the lower mold plate 12. During the injection molding process, the mold will be subjected to impact force. The buffer plate 5 can effectively buffer these external forces and prevent the lower mold plate 12 from being directly impacted and damaged. At the same time, the buffer plate 5 cooperates with the spring 17 to further enhance the protection and stability of the lower mold plate 12, which helps to improve the molding quality of the product and extend the service life of the lower mold plate 12.

[0035] Upper mold plate 6: The upper mold plate 6 is fixed on the lower surface of the lifting plate 7 and is an important component of the upper mold mechanism. It has connecting holes on both sides and a mounting groove on the bottom. The connecting holes are used to install the connecting mechanism, and the mounting groove is used to engage the upper cavity 14. During the injection molding process, the upper mold plate 6 cooperates with the lower mold plate 12 to form the injection molding cavity, which plays a key role in the shape and dimensional accuracy of the injection molded product. Moreover, the upper cavity 6 can be quickly replaced through the connecting mechanism, improving production efficiency.

[0036] Lifting plate 7: Sliding blocks are symmetrically installed on both sides of the lifting plate 7 and are slidably connected to the sliding groove on the column of the bottom support plate 1. The piston rod 8 passes through the sliding hole of the bottom support plate 1 and is fixedly connected to the top surface of the lifting plate 7. Under the drive of the hydraulic cylinder 9, the lifting plate 7 can move up and down, drive the upper mold mechanism to move, realize the opening and closing action of the mold, and enable the mold closing, injection, demolding and other operations in the injection molding process to be carried out smoothly, ensuring the continuity of injection molding production.

[0037] Piston rod 8: One end of piston rod 8 is connected to hydraulic cylinder 9 for transmission, and the other end passes through the sliding hole of bottom support plate 1 and is fixedly connected to the top surface of lifting plate 7. It converts the hydraulic energy generated by hydraulic cylinder 9 into mechanical energy, which pushes lifting plate 7 to move up and down. The movement accuracy and stability of piston rod 8 directly affect the movement accuracy of upper mold mechanism, and thus affect the quality of injection molded products. It is a key transmission component for realizing the mold opening and closing action.

[0038] Hydraulic cylinder 9: The hydraulic cylinder 9 is fixedly installed on the top plate of the bottom support plate 1. It is the power device that drives the lifting plate 7 to move. Through the input and output of hydraulic oil, the hydraulic cylinder 9 controls the extension and retraction of the piston rod 8, thereby realizing the lifting plate 7 to drive the upper mold mechanism to move up and down. It has the advantages of large output force and smooth movement, and can provide stable and sufficient power for the opening and closing of the injection mold to ensure the smooth progress of the injection process.

[0039] Pressing rod 10: Pressing rod 10 is sleeved in the stepped hole of fixed shaft 11. Its bottom surface has a fixed circular plate. The long axis of the bottom surface of the circular plate has a smooth groove. Pressing rod 10 is connected to connecting shaft 18 through spring 15. When pressing pressing rod 10, the locking ball 16 can retract, which facilitates the installation and disassembly of upper cavity 14 and upper template 6. After releasing pressing rod 10, it returns to its original position under the action of spring 15. The locking ball is inserted into the fixed hole of upper cavity 14, realizing the rapid splicing of upper cavity 14 and upper template 6, and improving mold replacement efficiency.

[0040] Fixed shaft 11: Fixed shaft 11 is coaxially fixed in the connecting hole of upper template 6. The stepped hole inside is used to fit the pressing rod 10. Fixed shaft 11 provides the installation and positioning foundation for components such as pressing rod 10, spring 15, and connecting shaft 18, ensuring the accurate relative position of each component of the connecting mechanism, enabling the connecting mechanism to work normally, and ensuring the stability and reliability of the connection between upper cavity 14 and upper template 6.

[0041] Lower mold plate 12: The lower mold plate 12 is snapped between the two buffer plates 5 of the clamping plate 3. It is an important component in the injection mold that cooperates with the upper mold plate 6 to form the injection cavity. Its surface shape and size are designed according to the requirements of the injection molded product. During the injection molding process, the lower mold plate 12 and the upper mold plate 6 jointly determine the shape and precision of the product. Through the action of the lower mold plate fixing mechanism, the lower mold plate 12 can be accurately positioned and firmly fixed to ensure the quality of the injection molded product.

[0042] Lead screw 13: Lead screw 13 is symmetrically rotatably connected in the threaded hole of the fixing plate of the fixing seat 2. One end is fixedly connected to the output shaft of the motor 4. Driven by the motor 4, lead screw 13 rotates and, through the cooperation with the threaded hole of clamping plate 3, drives clamping plate 3 to move along the trapezoidal groove of fixing seat 2, thereby realizing the clamping and loosening action of lower template 12. The transmission accuracy of lead screw 13 directly affects the positioning accuracy of lower template 12, and thus affects the quality of injection molded products.

[0043] Upper cavity 14: The upper cavity 14 is snapped into the mounting groove of the upper template 6. Stepped fixing holes are opened on both sides, which are coaxial with the connecting holes of the upper template 6. The upper cavity 14 is a key component of injection molding. Its internal shape determines the shape of the upper part of the injection molded product. It can be quickly spliced ​​with the upper template 6 through the connecting mechanism, making it easy to replace upper cavities 14 of different shapes to meet the production needs of different products and improve the versatility and production efficiency of the mold.

[0044] Spring 15: One end of spring 15 is fixed to the outer periphery of the long axis of the bottom surface of the fixed circular plate of the pressing rod 10, and the other end is connected to the upper plane of the connecting shaft 18. In the connecting mechanism, spring 15 plays a reset role. When the pressing rod 10 is pressed down and the locking ball 16 retracts, the pressing rod 10 is released, and spring 15 releases its elastic force, pushing the pressing rod 10 back to its original position, so that the locking ball 16 is locked into the fixing hole of the upper cavity 14, ensuring that the upper cavity 14 and the upper template 6 are firmly connected, and ensuring the reliability of the mold splicing.

[0045] Snap-fit ​​ball 16: Snap-fit ​​ball 16 is slidably connected in the sliding hole of the connecting shaft 18, and is coaxially aligned with the larger diameter hole on the upper cavity 14. When the pressing rod 10 is pressed down, snap-fit ​​ball 16 can retract, which facilitates the installation of the upper cavity 14. After the pressing rod 10 is released, under the action of spring 15, snap-fit ​​ball 16 pops out and snaps into the fixing hole of the upper cavity 14, realizing the quick splicing and stable connection between the upper cavity 14 and the upper template 6. It is a key component for the connection mechanism to realize the quick splicing function.

[0046] Spring 2 17: Spring 2 17 is installed on the two opposite plates of clamping plate 3, and its two ends are connected to clamping plate and buffer plate 5 respectively. During the injection molding process, spring 2 17 plays the role of buffering and shock absorption, which can alleviate the impact force generated during injection molding, prevent the lower mold plate 12 from being damaged by excessive impact, and ensure the stability of the lower mold plate 12 during the injection molding process, which helps to improve the molding accuracy of the product and the service life of the mold.

[0047] Connecting shaft 18: The upper surface of the connecting shaft 18 has a through connecting hole, which is slidably connected to the pressing rod 10 on the same axis. The outer arc surface near the bottom has sliding holes distributed around its circumference for installing the snap-fit ​​ball 16. The connecting shaft 18 plays a connecting and supporting role in the connecting mechanism, enabling the pressing rod 10, snap-fit ​​ball 16 and spring 15 to work together to achieve quick splicing and disassembly of the upper cavity 14 and the upper template 6, ensuring the efficient operation of the upper mold mechanism.

[0048] Working principle: The hydraulic cylinder 9 serves as the power source, controlling the extension and retraction of the piston rod 8 through the input and output of hydraulic oil. When the hydraulic cylinder 9 operates and the piston rod 8 extends, it pushes the lifting plate 7 to move downward along the sliding groove on the bottom support plate 1 column; conversely, when the piston rod 8 retracts, the lifting plate 7 moves upward. The sliding blocks symmetrically installed on both sides of the lifting plate 7 are engaged and slidably connected with the sliding groove on the column, ensuring the smoothness of the movement of the lifting plate 7. In this way, the lifting plate 7 drives the upper mold mechanism fixed on its lower surface to move up and down, realizing the opening and closing action of the mold, providing conditions for injection molding and demolding operations.

[0049] When installing the upper cavity 14, press the pressing rod 10. The pressing rod 10 slides downward in the stepped hole of the fixed shaft 11. The long shaft of the bottom surface of the fixed circular plate drives the spring 15 to compress. At the same time, the smooth groove on the pressing rod 10 disengages from the locking ball 16. The locking ball 16 can retract inward in the sliding hole of the connecting shaft 18. At this time, place the upper cavity 14 into the mounting groove of the upper template 6, so that the fixing holes on both sides of the upper cavity 14 are aligned with the connecting holes of the upper template 6. Release the pressing rod 10, the spring 15 releases its elastic force, pushes the pressing rod 10 to reset, and the locking ball 16 pops out under the action of the spring 15 and locks into the larger diameter fixing hole of the upper cavity 14, completing the rapid splicing of the upper cavity 14 and the upper template 6, preparing for injection molding.

[0050] When the motor 4 starts and rotates forward or in reverse, it drives the lead screw 13 to rotate in the threaded hole of the fixed plate of the fixed seat 2. The trapezoidal slider on the bottom surface of the clamping plate 3 is engaged and slidably connected with the trapezoidal groove of the fixed seat 2, and the threaded hole on the clamping plate 3 is threadedly connected with the lead screw 13. Therefore, the rotation of the lead screw 13 causes the clamping plate 3 to move along the trapezoidal groove of the fixed seat 2. The lower mold plate 12 is engaged between the two buffer plates 5. By controlling the rotation of the lead screw 13 through the motor 4, the clamping plate 3 can position and firmly clamp the lower mold plate 12. At the same time, the spring 17 and the buffer plate 5 can buffer the impact force during the injection molding process and ensure the stability of the lower mold plate 12 during injection molding.

[0051] When the mold is closed, the upper mold mechanism descends with the lifting plate 7, and the upper mold plate 6 fits with the lower mold plate 12 to form an injection cavity. Molten plastic is injected into the cavity, and under the action of injection pressure, the plastic fills every corner of the cavity. Since the lower mold plate 12 is precisely positioned and stably fixed by the fixing mechanism, the upper cavity 14 of the upper mold mechanism is firmly connected with the upper mold plate 6, ensuring the sealing and stability of the mold during the injection process. This allows the plastic to be formed according to the shape of the mold cavity, thereby producing plastic products that meet the requirements.

[0052] After injection molding is completed, the hydraulic cylinder 9 controls the piston rod 8 to retract, which drives the lifting plate 7 to rise. The upper mold mechanism rises accordingly, realizing the mold opening. At this time, the plastic product remains on the lower mold plate 12. The plastic product can be removed from the lower mold plate 12 by subsequent ejection devices, etc., to complete the entire injection molding production process.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Quickly spliced injection mold, including bottom support plate (1), lifting plate (7), piston rod (8), hydraulic cylinder (9), the upper surface both sides of bottom support plate (1) symmetry fixed installation has column, the upper surface of the column on bottom support plate (1) is fixedly installed with top plate, the middle of top plate is provided with the sliding hole that passes through, the opposite surface of the column on two bottom support plates (1) is provided with sliding groove, the top plate on bottom support plate (1) is fixedly installed with hydraulic cylinder (9), and hydraulic cylinder (9) is driven connection with piston rod (8), and the both sides of lifting plate (7) symmetry fixed installation has sliding block, and the sliding block of lifting plate (7) both sides and the sliding groove on bottom support plate (1) are connected and slide, and the piston rod (8) passes through the sliding hole on bottom support plate (1) and the top surface fixed connection of lifting plate (7), its characterized in that: The bottom surface of the lifting plate (7) is fixedly provided with an upper die mechanism, and the upper surface of the bottom support plate (1) is provided with a lower die plate fixing mechanism in the middle of the two upright columns on the bottom support plate (1).

2. A quick assembly injection mold according to claim 1, characterized in that: The upper die mechanism comprises an upper die plate (6), an upper cavity (14) and a connecting mechanism, the lower surface of the lifting plate (7) is fixedly provided with the upper die plate (6), the two side surfaces of the upper die plate (6) are provided with connecting holes, the bottom surface of the upper die plate (6) is provided with an installation groove, the installation groove of the upper die plate (6) is connected with the upper cavity (14), the two sides of the upper cavity (14) are provided with fixing holes coaxial with the connecting holes of the upper die plate (6), the fixing holes of the upper cavity (14) are stepped holes, and the connecting mechanism is arranged in the fixing holes of the upper cavity (14) and the connecting holes of the upper die plate (6).

3. A quick assembly injection mold according to claim 2, characterized in that: The connecting mechanism comprises a pressing rod (10), a fixed shaft (11), a spring (15), a clamping ball (16) and a connecting shaft (18), the connecting holes of the upper die plate (6) are coaxially fixedly connected with the fixed shaft (11), the fixed shaft (11) is provided with a stepped hole in the inside, the pressing rod (10) is coaxially sleeved in the stepped hole of the fixed shaft (11), the bottom surface of the pressing rod (10) is fixedly provided with a fixed circular plate, the bottom surface of the fixed circular plate of the pressing rod (10) is fixedly provided with a long shaft, the outer arc surface of the long shaft of the pressing rod (10) is provided with a smooth groove, the upper surface of the connecting shaft (18) is provided with a through connecting hole, the outer arc surface of the connecting shaft (18) is circumferentially provided with a sliding hole, the sliding hole of the connecting shaft (18) is slidably connected with the clamping ball (16), the connecting hole of the connecting shaft (18) is coaxially slidably connected with the pressing rod (10), the bottom surface of the fixed circular plate of the pressing rod (10) is fixedly provided with the spring (15) around the long shaft, the other end of the spring (15) is fixedly connected with the upper surface of the connecting shaft (18), and the smooth groove of the pressing rod (10) is coaxially corresponding to the clamping ball (16).

4. A quick assembly injection mold according to claim 3, characterized in that: The clamping ball (16) is coaxially corresponding to the larger diameter hole of the upper cavity (14).

5. A quick assembly injection mold according to claim 2, characterized in that: The lower mold plate fixing mechanism comprises a fixing seat (2), a clamping plate (3), a motor (4), a buffer plate (5), a lead screw (13) and a spring (17), the upper surface of the bottom support plate (1) is fixedly provided with the fixing seat (2) corresponding to the lower part of the upper mold mechanism, a trapezoidal groove is formed in the middle of the upper surface of the fixing seat (2), a fixed plate is fixedly installed in the middle of the trapezoidal groove on the fixing seat (2), screw holes are symmetrically formed in the two side surfaces of the fixed plate, screw holes are also symmetrically formed in the two side surfaces of the fixing seat (2), two screw holes coaxially corresponding to the screw holes on the fixing seat (2) are formed in the two vertical columns on the bottom support plate (1), and a support plate is fixedly installed on the outer side surface of the vertical column of the bottom support plate (1) corresponding to the screw holes on the bottom support plate (1), the motor (4) is fixedly installed on the support plate on the bottom support plate (1), the lead screw (13) is symmetrically and rotatably connected in the two screw holes of the fixed plate on the fixing seat (2), the output shaft of the motor (4) is fixedly connected through the screw holes on the bottom support plate (1) and the fixing seat (2) and the lead screw (13), the trapezoidal slider is fixedly installed on the bottom surface of the clamping plate (3), a screw hole is formed in the trapezoidal slider, the trapezoidal slider on the clamping plate (3) is clamped and slidably connected with the trapezoidal groove of the fixing seat (2), the screw hole on the clamping plate (3) is threadedly connected with the lead screw (13), the clamping plate (3) is in the shape of "C", the spring (17) is fixedly installed on the two opposite plates of the clamping plate (3), and the other end of the spring (17) is fixedly installed with the buffer plate (5).

6. A quick assembly injection mold according to claim 5, characterized in that: The two buffer plates (5) on the clamping plate (3) are clamped with the lower mold plate (12) in the opposite surfaces.

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