A pressurization mechanism for a clamping machine

Abstract

The application relates to the technical field of plastic machinery, and discloses a clamping machine pressurizing mechanism, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a fixed mold plate, the top of the bottom plate is fixedly connected with supporting columns on the two sides of the fixed mold plate, the top of each supporting column is fixedly connected with a supporting frame, the top of the supporting frame is provided with a hydraulic cylinder, the output end of the hydraulic cylinder extends to the lower portion of the supporting frame and is fixedly connected with a movable mold plate, the bottom of the movable mold plate is fixedly connected with a pressurizing mold plate, the top of the fixed mold plate is fixedly connected with a mold, a plurality of mold grooves are arranged in the mold, an ejection mechanism is arranged at the bottom of each mold groove, the movable mold plate can be limited by the auxiliary limiting mechanism, the clamping gap between the movable mold plate and the fixed mold plate can be effectively avoided from being enlarged due to excessive pressure, and the sealing performance and the stability of the clamping mechanism are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of plastic machinery technology, specifically to a pressurizing mechanism for a mold clamping machine. Background Technology

[0002] Plastic stretch blow molding machines produce hollow plastic containers, such as mineral water bottles, oil bottles, and beverage bottles. There are many types of plastic stretch blow molding machines. One type uses a piston-sealed pneumatic mold closing and pressurizing mechanism. The mold closing mechanism generally includes a front mold plate and a rear mold plate. When the preform is transported between the front and rear mold plates, the front and rear mold plates are joined together, i.e., the mold is closed, fixing the preform in the mold groove formed by the front and rear molds. Then, an air pump blows air into the preform to form it into a bottle. The pressurizing mechanism is used to eliminate the gap between the two mold plates during mold closing. The main structure includes a pressurizing mold plate set inside the fixed mold plate. The fixed mold plate is equipped with a pressurizing piston. The pressurizing mold plate and the fixed mold plate are connected by a pressurizing tie rod, which is equipped with a pressurizing spring.

[0003] For example, Chinese patent application number 202122411816.1 discloses a mold-closing pressure-boosting mechanism for a blow molding machine. This invention reduces the movement of the pressure-boosting template by setting it on a fixed rear template. In actual production, the pressure-boosting template only needs to move a small distance towards the rear template after mold closing, increasing the pressure between them and reducing the size of the mold-closing gap. This reduces the power required for the overall mold-closing pressure-boosting mechanism, saving energy. Simultaneously, the pressure-boosting template only needs to move a small distance, making it less susceptible to excessive force, reducing the possibility of damage, and extending its service life. Furthermore, the simultaneous push of multiple pressure-boosting chambers increases the pressure, improving the mold-closing effect and thus increasing product yield. Preferably, there are two pressure-boosting chambers, located on opposite sides of the pressure-boosting template. This ensures that, while maintaining the desired effect, when the pneumatic source pushes the pressure-boosting template, both sides of the template are simultaneously subjected to force, resulting in more balanced force and greater stability during movement.

[0004] However, the aforementioned patent has poor mold sealing and low stability during operation, which poses risks of mold expansion and air leakage. This can easily cause cracks in the product during molding, thus seriously affecting the production quality of the product. In addition, the molded plastic bottles of the aforementioned patent are not easy to remove from the mold groove, which seriously affects the efficiency of workers in handling plastic bottles. Summary of the Invention

[0005] The purpose of this invention is to provide a pressurizing mechanism for a mold clamping machine, which solves the problems mentioned in the background art.

[0006] This application provides a pressurizing mechanism for a mold clamping machine, including a base plate. A fixed template is fixedly connected to the top of the base plate. Support columns are fixedly connected to both sides of the fixed template on the top of the base plate. A support frame is fixedly connected to the top of the support columns. A hydraulic cylinder is installed on the top of the support frame. The output end of the hydraulic cylinder extends to the bottom of the support frame and is fixedly connected to a moving template. A pressurizing template is fixedly connected to the bottom of the moving template. A mold is fixedly connected to the top of the fixed template. Multiple mold slots are opened inside the mold. An ejection mechanism is provided at the bottom of the mold slots. An auxiliary limiting mechanism and a locking mechanism are provided on the outer surface of the support columns.

[0007] By adopting the above technical solution, this device can quickly perform blow molding of plastic bottles through the mold clamping assembly, thereby greatly improving the practicality of the device.

[0008] Optionally, the ejection mechanism includes an ejection groove formed at the bottom of the mold cavity. A motor is fixedly connected to the bottom of the ejection groove, and an external threaded rod is fixedly connected to the output end of the motor. An internal threaded rod is movably connected to the top of the external threaded rod through a limiting component, and a sealing top plate is fixedly connected to the top of the internal threaded rod.

[0009] By adopting the above technical solution, this device can quickly eject the molded product from the mold groove through the ejection mechanism, which greatly facilitates the operator to pick up the molded product and thus greatly improves the production efficiency of this device.

[0010] Optionally, the auxiliary limiting mechanism includes a U-shaped frame installed on the outer surface of the support column, a connecting rod rotatably connected inside the U-shaped frame, an auxiliary limiting plate fixedly connected to the outer surface of the connecting rod, and torsion springs provided on the outer surfaces of the connecting rod on both sides of the auxiliary limiting plate.

[0011] By adopting the above technical solution, this device can limit the moving template through the auxiliary limiting mechanism, thereby effectively avoiding the increase of the mold closing gap between the moving template and the fixed template due to excessive pressure, and thus greatly increasing the sealing performance and stability of this device when locking the mold.

[0012] Optionally, the locking mechanism includes a pull rod movably connected inside the support column and locking slots opened on both sides of the moving template. A locking block adapted to the locking slot is fixedly connected to one side of the pull rod, and a fixing pull plate is fixedly connected to the other side of the pull rod.

[0013] By adopting the above technical solution, this device can quickly lock and fix the moving template through the locking mechanism, thereby further preventing the moving template from moving during the molding process, and thus greatly improving the mold closing production quality of this device.

[0014] Optionally, the limiting component includes limiting grooves formed on both sides of the ejection groove, a limiting plate is movably connected inside the limiting groove, and the other end of the limiting plate is fixedly connected to the internal threaded rod.

[0015] By adopting the above technical solution and utilizing the limiting effect of the limiting component, the internal thread rod can move more stably.

[0016] Optionally, an anti-slip sleeve is fixedly connected to the outer surface of the fixed pull plate, and the outer surface of the anti-slip sleeve is provided with anti-slip texture.

[0017] By adopting the above technical solution, the anti-slip texture can increase frictional resistance, thereby effectively preventing operators from slipping.

[0018] Optionally, multiple air pumps are installed on the top of the moving template, and all of the air pumps are connected to the pressurized template through air pipes.

[0019] By adopting the above technical solution, a high-pressure gas can be introduced into the mold cavity inside the pressurizing template through an air pump via an air pipe, thereby enabling the high-pressure gas to blow gas onto the preform.

[0020] Optionally, a controller is fixedly connected to the outer surface of the support column, and a control switch is fixedly connected to the outer surface of the controller.

[0021] By adopting the above technical solution, the controller can more conveniently control the electrical components inside the device, thereby greatly improving the practicality of the device.

[0022] Optionally, both the locking block and the locking slot are trapezoidal structures.

[0023] By adopting the above technical solution, the moving template can be fixed more stably by using the trapezoidal locking block and locking slot.

[0024] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0025] 1. The technical solution of this application, by setting a U-shaped frame, connecting rod, auxiliary limiting plate and torsion spring, enables the device to limit the moving template through the auxiliary limiting mechanism, thereby effectively avoiding the increase of the mold closing gap between the moving template and the fixed template due to excessive pressure, and thus greatly increasing the sealing and stability of the device when locking the mold.

[0026] 2. The technical solution of this application, by setting a pull rod, a locking slot, a locking block, a fixing pull plate and a return spring, enables the device to quickly lock and fix the moving template through the locking mechanism, thereby further preventing the moving template from moving during the molding process, and thus greatly improving the mold closing production quality of this device.

[0027] 3. The technical solution of this application, by setting up a motor, external threaded rod, internal threaded rod, sealing top plate, limiting groove and limiting plate, enables the device to quickly eject the molded product from the mold groove through the ejection mechanism, thereby greatly facilitating the operator to pick up the molded product and thus greatly improving the production efficiency of the device. Attached Figure Description

[0028] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 This is a front view of the overall pressurization mechanism of a mold clamping machine according to the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the auxiliary limiting mechanism in the pressurization mechanism of a mold clamping machine according to the present invention;

[0031] Figure 3 This is a schematic diagram of the internal structure of a portion of the mold in the pressurization mechanism of a mold clamping machine according to the present invention;

[0032] Figure 4 In a pressurizing mechanism of a mold clamping machine according to the present invention Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 In a pressurizing mechanism of a mold clamping machine according to the present invention Figure 1 Enlarged view of point B in the middle;

[0034] Figure 6 This is a schematic diagram of the internal structure of the connection between the moving template and the locking block in the pressurizing mechanism of a mold clamping machine according to the present invention.

[0035] In the diagram: 1. Base plate; 2. Fixed template; 3. Support frame; 4. Mold; 5. Hydraulic cylinder; 6. Moving template; 7. Pressurizing template; 8. Mold groove; 9. Ejection groove; 10. Motor; 11. External threaded rod; 12. Internal threaded rod; 13. Sealing top plate; 14. Limiting groove; 15. Limiting plate; 16. Air pump; 17. U-shaped frame; 18. Connecting rod; 19. Auxiliary limiting plate; 20. Torsion spring; 21. Pull rod; 22. Locking slot; 23. Locking block; 24. Fixed pull plate; 25. Return spring; 26. Controller; 27. Support column. Detailed Implementation

[0036] Please see Figure 1-6The present invention provides a technical solution: a pressurizing mechanism for a mold clamping machine, comprising a base plate 1, a fixed template 2 fixedly connected to the top of the base plate 1, support columns 27 fixedly connected to both sides of the fixed template 2 on the top of the base plate 1, a support frame 3 fixedly connected to the top of the support columns 27, a hydraulic cylinder 5 installed on the top of the support frame 3, the output end of the hydraulic cylinder 5 extending to the bottom of the support frame 3 and fixedly connected to a moving template 6, a pressurizing template 7 fixedly connected to the bottom of the moving template 6, a mold 4 fixedly connected to the top of the fixed template 2, a plurality of mold slots 8 opened inside the mold 4, an ejection mechanism provided at the bottom of the mold slots 8, and an auxiliary limiting mechanism and a locking mechanism provided on the outer surface of the support columns 27.

[0037] By adopting the above technical solution, this device can quickly perform blow molding of plastic bottles through the mold clamping assembly, thereby greatly improving the practicality of the device.

[0038] In the embodiments of this application, such as Figure 3-4 As shown, the ejection mechanism includes an ejection groove 9 formed at the bottom of the inner cavity of the mold groove 8. A motor 10 is fixedly connected to the bottom of the inner cavity of the ejection groove 9. An external threaded rod 11 is fixedly connected to the output end of the motor 10. An internal threaded rod 12 is movably connected to the top of the external threaded rod 11 through a limiting component. A sealing top plate 13 is fixedly connected to the top of the internal threaded rod 12.

[0039] By adopting the above technical solution, this device can quickly eject the molded product from the mold groove 8 through the ejection mechanism, which greatly facilitates the operator to pick up the molded product and thus greatly improves the production efficiency of this device.

[0040] In the embodiments of this application, such as Figure 1-2 As shown, the auxiliary limiting mechanism includes a U-shaped frame 17 installed on the outer surface of the support column 27. A connecting rod 18 is rotatably connected inside the U-shaped frame 17. An auxiliary limiting plate 19 is fixedly connected to the outer surface of the connecting rod 18. Torsion springs 20 are provided on the outer surfaces of the connecting rod 18 on both sides of the auxiliary limiting plate 19.

[0041] By adopting the above technical solution, the device can limit the moving template 6 through the auxiliary limiting mechanism, thereby effectively avoiding the increase of the mold closing gap between the moving template 6 and the fixed template 2 due to excessive pressure, and thus greatly increasing the sealing performance and stability of the device when locking the mold.

[0042] In the embodiments of this application, such as Figure 5-6 As shown, the locking mechanism includes a pull rod 21 movably connected inside the support column 27 and locking slots 22 opened on both sides of the moving template 6. A locking block 23 adapted to the locking slot 22 is fixedly connected to one side of the pull rod 21, and a fixing pull plate 24 is fixedly connected to the other side of the pull rod 21.

[0043] By adopting the above technical solution, the device can quickly lock and fix the moving template 6 through the locking mechanism, thereby further preventing the moving template 6 from moving during the molding process, and thus greatly improving the mold closing production quality of the device.

[0044] In the embodiments of this application, such as Figure 4 As shown, the limiting assembly includes limiting grooves 14 opened on both sides of the ejection groove 9. A limiting plate 15 is movably connected inside the limiting groove 14, and the other end of the limiting plate 15 is fixedly connected to the internal threaded rod 12.

[0045] By adopting the above technical solution and utilizing the limiting effect of the limiting component, the internal thread rod 12 can move more stably.

[0046] In the embodiments of this application, such as Figure 5 As shown, an anti-slip sleeve is fixedly connected to the outer surface of the fixed pull plate 24, and the outer surface of the anti-slip sleeve is provided with anti-slip texture.

[0047] By adopting the above technical solution, the anti-slip texture can increase frictional resistance, thereby effectively preventing operators from slipping.

[0048] In the embodiments of this application, such as Figure 1 As shown, multiple air pumps 16 are installed on the top of the moving template 6, and all of the multiple air pumps 16 are connected to the pressurized template 7 through air pipes.

[0049] By adopting the above technical solution, the air pump 16 can input high-pressure gas into the mold cavity inside the pressurizing template 7 through the air pipe, so that the high-pressure gas can be used to blow gas onto the preform.

[0050] In the embodiments of this application, such as Figure 1 As shown, a controller 26 is fixedly connected to the outer surface of the support column 27, and a control switch is fixedly connected to the outer surface of the controller 26.

[0051] By adopting the above technical solution, the controller 26 can more conveniently control the electrical components inside the device, thereby greatly improving the practicality of the device.

[0052] In the embodiments of this application, such as Figure 6 As shown, both the locking block 23 and the locking slot 22 are trapezoidal structures.

[0053] By adopting the above technical solution, the trapezoidal locking block 23 and locking slot 22 enable the moving template 6 to be fixed more stably.

[0054] When mold closing is required, the operator can activate the hydraulic cylinder 5 via the controller 26, causing it to move the moving template 6 and the pressure-boosting template 7 downwards. As the moving template 6 moves downwards, it presses against the auxiliary limiting plate 19, causing the auxiliary limiting plate 19 to deflect downwards under the action of the connecting rod 18 and the torsion spring 20. When the moving template 6 is completely lowered below the auxiliary limiting plate 19, the auxiliary limiting plate 19 returns to its original position under the elastic action of the torsion spring 20, thus limiting the moving template 6. This effectively prevents the mold closing gap between the moving template 6 and the fixed template 2 from widening due to excessive pressure, greatly increasing the sealing and stability of the device during mold closing. While the moving template 6 moves downwards, the operator can pull the pull rod 21 outwards via the fixed pull plate 24. After the pressure-boosting template 7 contacts the mold 4, the operator releases the force pulling the fixed pull plate 24, allowing the pull rod 21 to return to its original position under the elastic action of the return spring 25. The quick-release locking block 23 is inserted into the locking slots 22 on both sides of the moving template 6, which further prevents the moving template 6 from moving during the molding process, thereby greatly improving the mold closing production quality of this device. At the same time, the operator starts the air pump 16 through the controller 26, so that the air pump 16 can input high-pressure gas into the mold cavity inside the pressurized template 7 through the air pipe, so that the high-pressure gas can blow the bottle preform. After the blowing is finished, the operator lifts the moving template 6 upward and starts the motor 10 through the controller 26, so that the motor 10 drives the external thread rod 11 to rotate. When the external thread rod 11 rotates, it will drive the internal thread rod 12 to move upward under the limiting action of the limiting groove 14 and the limiting plate 15, so that the internal thread rod 12 can drive the sealing top plate 13 to push the molded bottle out of the mold groove 8, which greatly facilitates the operator to pick up the molded product, thereby greatly improving the production efficiency of this device.

Claims

1. A pressurizing mechanism for a mold clamping machine, comprising a base plate (1), characterized in that: A fixed template (2) is fixedly connected to the top of the base plate (1). Support columns (27) are fixedly connected to both sides of the fixed template (2) at the top of the base plate (1). A support frame (3) is fixedly connected to the top of the support column (27). A hydraulic cylinder (5) is installed on the top of the support frame (3). The output end of the hydraulic cylinder (5) extends to the bottom of the support frame (3) and is fixedly connected to a moving template (6). A pressure boosting template (7) is fixedly connected to the bottom of the moving template (6). A mold (4) is fixedly connected to the top of the fixed template (2). Multiple mold slots (8) are opened inside the mold (4). The bottom of the mold slots (8) is provided with The support column (27) has an ejection mechanism, and the outer surface of the support column (27) is provided with an auxiliary limiting mechanism and a locking mechanism. The ejection mechanism includes an ejection groove (9) opened at the bottom of the inner cavity of the mold groove (8). A motor (10) is fixedly connected to the bottom of the inner cavity of the ejection groove (9). An external thread rod (11) is fixedly connected to the output end of the motor (10). An internal thread rod (12) is movably connected to the top of the external thread rod (11) through a limiting component. A sealing top plate (13) is fixedly connected to the top of the internal thread rod (12). The auxiliary limiting mechanism includes a U-shaped frame (17) installed on the outer surface of the support column (27). The inner surface of the U-shaped frame (17) is... The part is rotatably connected to a connecting rod (18), and an auxiliary limiting plate (19) is fixedly connected to the outer surface of the connecting rod (18). Torsion springs (20) are provided on the outer surfaces of the connecting rod (18) on both sides of the auxiliary limiting plate (19). The locking mechanism includes a pull rod (21) movably connected inside the support column (27) and a locking slot (22) opened on both sides of the moving template (6). A locking block (23) adapted to the locking slot (22) is fixedly connected to one side of the pull rod (21), and a fixed pull plate (24) is fixedly connected to the other side of the pull rod (21). The limiting component includes limiting grooves opened on both sides of the top groove (9). (14), the limiting groove (14) is movably connected to the limiting plate (15), the other end of the limiting plate (15) is fixedly connected to the internal thread rod (12), the outer surface of the fixed pull plate (24) is fixedly connected to the anti-slip sleeve, the outer surface of the anti-slip sleeve is provided with anti-slip texture, the top of the moving template (6) is equipped with multiple sets of air pumps (16), the multiple sets of air pumps (16) are all connected to the pressurizing template (7) through air pipes, the outer surface of the support column (27) is fixedly connected to the controller (26), the outer surface of the controller (26) is fixedly connected to the control switch, the locking plug (23) and the locking slot (22) are both trapezoidal structures.

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