High-precision full-automatic vertical rubber injection molding machine

Abstract

The application discloses a high-precision full-automatic vertical rubber injection molding machine and relates to the technical field of rubber injection molding machines. The machine comprises a main body, locking assemblies are arranged between a movable die holder and a fixed die holder, exhaust holes are formed in the mold, exhaust assemblies are arranged in the exhaust holes, wall scraping rings are arranged in the exhaust holes, cleaning assemblies are arranged on one side of the wall scraping rings, lifting blocks are fixed to the top ends of locking columns, and limiting assemblies are arranged outside the lifting blocks. When the positioning rods at the bottom ends of the positioning columns are moved into the locking columns, the positioning columns stop moving. At this time, the limiting columns continue to move, the limiting rods slide in the connecting rods, and the limiting columns continue to move downward and drive the locks to rotate around the protruding positions of the positioning columns through the inclined surfaces, so that the locks and the locking columns are engaged, additional mold locking between the movable die holder and the fixed die holder is realized, the additional mold locking can be realized by increasing the overall strength or local pressure compensation, and the full-area sealing of the parting surface is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rubber injection molding machines, in particular to a high-precision full-automatic vertical rubber injection molding machine. BACKGROUND

[0002] The vertical rubber injection molding machine is a molding equipment specially designed for rubber products. Its core feature is the "vertical layout", combined with the characteristics of rubber "heating plasticization - high-pressure injection - vulcanization and curing", to realize the automatic production from rubber raw materials to finished products. The work of the vertical rubber injection molding machine is a periodic cycle. Each cycle includes mold preparation and mold closing, rubber raw material plasticization (melting stage), high-pressure injection (filling stage), vulcanization and curing (core of molding), pressure maintaining and cooling (stabilizing shape), and mold opening and ejection (product taking stage). Through the time sequence control of heating plasticization - high-pressure injection - vulcanization and curing, the solid rubber is converted into an automatic cycle process of a shaped finished product. The core is to precisely match the "high-viscosity plasticization requirement" and "vulcanization and curing characteristics" of rubber. At the same time, the vertical layout improves the production convenience and the stability of the finished product quality, and is widely used in the production of rubber seals, shock absorbers in the fields of automobiles, electronics, machinery, etc.

[0003] When the traditional vertical rubber injection molding machine is in use, the rubber melt will rush into the mold cavity at high pressure and high speed during the injection stage. At this time, the melt will generate an outward bulging force on the inner wall of the cavity. Only relying on the basic locking force (which only meets the minimum force required for mold closing), the bulging force will push open the mold parting surface, resulting in overflow (flash), that is, excess rubber burrs appear on the edge of the product, which needs to be trimmed additionally afterwards. Even the product size will be out of tolerance due to the excessive overflow. For rubber products with complex structure (such as multi-cavity, deep cavity) or thick wall, after injection, they need to enter the pressure maintaining stage. During the pressure maintaining stage, there is no additional locking force support, and the continuous bulging force will slowly push open the mold, resulting in insufficient pressure maintaining, that is, the product will have shrink marks, bubbles or size shrinkage. Especially, the center shrinkage problem of thick-walled products will be more obvious. Moreover, the traditional vertical rubber injection molding machine cannot adjust the exhaust hole according to the viscosity of the melt. High-viscosity melt flows slowly in the cavity. During the filling process, it will slowly squeeze the gas. If the exhaust hole is too small, the gas discharge speed is much lower than the melt filling speed, and the gas is easily trapped in the dead angle of the cavity, forming bubbles and material defects. When the melt viscosity is low, the low-viscosity melt flows fast in the cavity. During the filling process, it will quickly push the gas towards the exhaust hole, and the gas discharge resistance is small. Even if the exhaust hole is small, it can also exhaust the gas in a short time.

[0004] In view of the above problems, it is necessary to make innovative design on the basis of the original high-precision full-automatic vertical rubber injection molding machine. SUMMARY

[0005] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a high-precision, fully automatic vertical rubber injection molding machine to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision fully automatic vertical rubber injection molding machine, comprising a main body, wherein a moving mold base and a fixed mold base are disposed within the main body, a locking component is disposed between the moving mold base and the fixed mold base, and the positions of the moving mold base and the fixed mold base are locked by the locking component, a locking post is fixed at the top of the moving mold base, and multiple latches are disposed around the top of the locking post at equal angles, a mold is fixed at the top of the moving mold base, an exhaust hole is provided inside the mold, an exhaust component is disposed inside the exhaust hole, and the size of the exhaust port of the exhaust hole is adjusted by the exhaust component, a scraping ring is disposed inside the exhaust hole, a cleaning component is disposed on one side of the scraping ring, and the cleaning component drives the scraping ring to clean the dirt inside the exhaust hole, a lifting block is fixed at the top of the locking post, a limit component is disposed outside the lifting block, and the position of the lifting block is adjusted by the limit component.

[0007] Preferably, the locking assembly includes a lead screw fixed inside the fixed mold base. One end of the lead screw is fixedly connected to the output end of the motor. A lifting rod is threadedly connected to the outer wall of the lead screw, and the lifting rod is slidably limited to the fixed mold base. A limit post is fixed to the bottom end of the lifting rod. A connecting rod is slidably connected inside the limit post. A positioning post is fixed to the bottom end of the connecting rod. A positioning rod is fixed to the bottom end of the positioning post. A cavity adapted to the positioning rod is opened inside the locking post. The protruding part of the outer wall of the positioning post is rotatably connected to the latch via a rotating shaft.

[0008] Preferably, the contact surface between the limiting post and the latch is an inclined surface, and the limiting post has a cavity inside that accommodates the sliding of the connecting rod and the positioning post. The connecting rod is slidably connected to the limiting rod, and the connecting rod also has a cavity inside that accommodates the sliding of the limiting rod.

[0009] Preferably, a first spring is provided between the limiting post and the positioning post, with one end of the first spring fixedly connected to the top of the inner wall of the limiting post and the other end of the first spring fixedly connected to the top of the positioning post.

[0010] Preferably, a second spring is provided between the positioning post and the latch, one end of the second spring is fixedly connected to the outer wall of the positioning post, and the other end of the second spring is fixedly connected to the inner wall of the latch.

[0011] Preferably, the exhaust assembly includes a rotating disk that meshes with the motor via a gear set. Multiple sliding blocks are symmetrically arranged at equal angles on one side of the rotating disk. A base is slidably connected to one side of each sliding block. A fixing rod is fixed to one end of the protruding part of the rotating disk, and a connecting ring is fixed to one end of the fixing rod.

[0012] Preferably, the rotating disk has a cavity that slides at the protruding position of the top of the sliding block, and the base has a cavity that slides at the protruding position of the bottom end of the sliding block.

[0013] Preferably, the cleaning assembly includes a rotating column fixed at the central axis of the connecting ring, a sliding rod slidably connected inside the rotating column, a limit block fixed on the outer wall of the sliding rod, and a threaded groove that mates with the limit block on the rotating column.

[0014] Preferably, the limiting component includes elastic telescopic blocks on both sides of the lifting block, a push block is slidably connected inside the lifting block, and the contact surface between the lifting block and the push block is an inclined surface. A connecting frame is fixed on one side of the push block, and the top of the connecting frame is fixedly connected to the sliding rod. Fixing plates are provided on both sides of the lifting block, and a positioning block that cooperates with the elastic telescopic block is provided on one side of the fixing plate.

[0015] Preferably, a handle is fixed to one side of the fixing plate, the handle passes through the main body, and both the elastic telescopic block and the positioning block are triangular.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention uses a motor to drive a lead screw to rotate, which in turn causes a lifting rod to slide. When the lifting rod moves, it moves the limiting post at its bottom, which in turn moves the connecting rod, causing the positioning post to move synchronously. When the positioning rod at the bottom of the positioning post moves into the locking post, the positioning post stops moving. At this time, the limiting post continues to move, and the limiting rod slides within the connecting rod. The first spring located between the limiting post and the positioning post is compressed. Since the contact surface between the limiting post and the latch is an inclined plane, when the limiting post continues to move downward, it causes the latch to rotate around the protruding position of the positioning post through the inclined plane, thereby engaging the latch and the locking post, achieving additional mold locking between the moving mold base and the fixed mold base. The basic mold locking force cannot be evenly transmitted to the mold parting surface, resulting in local pressure weak areas. Even if the overall mold locking force meets the standard, the weak areas may still overflow. Additional mold locking can cover the accuracy deviation by increasing the overall force or local pressure supplementation, ensuring that the entire parting surface is sealed.

[0018] 2. This invention uses a rotating disk to drive multiple sliding blocks to rotate. When the sliding blocks rotate, their protruding bottom ends slide within the cavity of the base. At this time, the closed vent holes are opened along with the moving sliding blocks. The number of rotations of the gear is adjusted according to the viscosity of the molten material to regulate the degree of vent hole opening. When the viscosity of the molten material is high, its flow resistance is large, requiring a larger vent hole. High-viscosity molten materials have poor fluidity, and even if the vent hole is slightly large, it is difficult for it to overcome its own flow resistance and overflow from the vent hole. Therefore, increasing the vent hole can improve venting efficiency without worrying about flash. When the viscosity of the molten material is low, its flow resistance is small, requiring a smaller vent hole. Low-viscosity molten materials have good fluidity. If the vent hole is too large, the molten material will overflow from the vent hole along with the gas, forming flash.

[0019] 3. In this invention, the rotating disc synchronously drives the fixed rod to rotate, which in turn drives the connecting ring to rotate. When the connecting ring rotates, it synchronously drives the rotating column to rotate. When the rotating column rotates, the threaded groove on it drives the limiting block to move, which in turn drives the sliding rod fixed to the limiting block to slide inside the rotating column. This causes the scraping ring fixed to the rotating column to move inside the exhaust hole, scraping away the dirt on the inner wall of the exhaust hole. The blockage of the exhaust hole 7 is mostly due to the local accumulation of residues during the production process. These blockages are often concentrated near the hole opening. Short-distance scraping can peel off this type of deposit from the inner wall through physical friction. However, if long-distance deep scraping or high-pressure washing is used, it may push the surface blockages deeper into the channel, causing secondary blockage. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram showing the connection between the fixed mold base and the moving mold base of the present invention;

[0022] Figure 3 This is a schematic diagram showing the connection between the vent hole and the mold in this invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the locking component of the present invention;

[0024] Figure 5 This is a schematic side sectional view of the three-dimensional structure of the locking component of the present invention;

[0025] Figure 6 This is a schematic diagram showing the connection between the positioning post and the second spring of the present invention.

[0026] Figure 7 This is a schematic diagram showing the connection structure between the connecting ring and the rotating column of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the exhaust assembly of the present invention;

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention;

[0029] Figure 10 This is a three-dimensional structural diagram of the limiting component of the present invention;

[0030] Figure 11 This is a schematic diagram showing the connection between the lifting block and the elastic telescopic block of the present invention.

[0031] In the diagram: 1. Main body; 2. Moving mold base; 3. Fixed mold base; 401. Lead screw; 402. Lifting rod; 403. Limiting post; 404. Connecting rod; 405. Limiting rod; 406. Positioning post; 407. First spring; 408. Second spring; 409. Positioning rod; 5. Lock; 6. Locking post; 7. Vent hole; 801. Rotating disk; 802. Sliding block; 803. Base; 804. Fixed rod; 805. Connecting ring; 9. Scraping ring; 101. Rotating post; 102. Threaded groove; 103. Limiting block; 104. Sliding rod; 11. Lifting block; 121. Elastic telescopic block; 122. Push block; 123. Connecting frame; 124. Positioning block; 125. Fixed plate; 126. Handle; 13. Mold. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1 to 11 This invention provides a technical solution: a high-precision fully automatic vertical rubber injection molding machine, comprising a main body 1, a moving mold base 2 and a fixed mold base 3 disposed within the main body 1, a locking component disposed between the moving mold base 2 and the fixed mold base 3, and the locking component locks the positions of the moving mold base 2 and the fixed mold base 3, a locking post 6 fixed at the top of the moving mold base 2, and multiple latches 5 disposed at equal angles around the top of the locking post 6, a mold 13 fixed at the top of the moving mold base 2, an exhaust hole 7 opened inside the mold 13, an exhaust component disposed inside the exhaust hole 7, and the exhaust component adjusts the size of the exhaust port of the exhaust hole 7, a scraping ring 9 disposed inside the exhaust hole 7, a cleaning component disposed on one side of the scraping ring 9, and the cleaning component drives the scraping ring 9 to clean the dirt inside the exhaust hole 7, a lifting block 11 fixed at the top of the locking post 6, a limit component disposed outside the lifting block 11, and the limit component adjusts the position of the lifting block 11.

[0034] In specific implementation, the main body 1 is the basic framework. The moving mold base 2 and the fixed mold base 3 inside it are locked in position by the locking components between them. The locking post 6 fixed at the top of the moving mold base 2 and the multiple latches 5 that surround the top at equal angles are the key components of the locking components. The mold 13 fixed at the top of the moving mold base 2 is used for rubber molding. The venting hole 7 opened inside the mold 13 is adjusted by the venting components inside the hole to adapt to the venting requirements of molten materials with different viscosities. At the same time, the scraping ring 9 inside the venting hole 7 is driven by the cleaning component on one side to clean the dirt on the inner wall of the venting hole 7 to avoid blockage. In addition, the lifting block 11 fixed at the bottom of the locking post 6 is adjusted in position by the external limiting components, thereby helping to optimize the coordination of the locking and venting related components and ensuring the stability and efficiency of the molding process.

[0035] As a further embodiment of the present invention, the locking component includes a lead screw 401 fixed in the fixed mold base 3. One end of the lead screw 401 is fixedly connected to the output end of the motor. A lifting rod 402 is threadedly connected to the outer wall of the lead screw 401, and the lifting rod 402 is slidably limited to the fixed mold base 3. A limit post 403 is fixed at the bottom end of the lifting rod 402. A connecting rod 404 is slidably connected inside the limit post 403. A positioning post 406 is fixed at the bottom end of the connecting rod 404. A positioning rod 409 is fixed at the bottom end of the positioning post 406. A cavity adapted to the positioning rod 409 is opened in the locking post 6. The protruding part of the outer wall of the positioning post 406 is rotatably connected to the latch 5 through a rotating shaft.

[0036] In specific implementation, the lead screw 401 fixed in the fixed mold base 3 has one end fixed to the motor output end. When the motor drives the lead screw 401 to rotate, the lifting rod 402, which is threadedly connected to the outer wall of the lead screw 401 and slidably limited to the fixed mold base 3, slides accordingly. The limiting post 403 fixed at the bottom of the lifting rod 402 moves synchronously. The connecting rod 404 slidably connected inside the limiting post 403 drives the positioning post 406 fixed at the bottom to move, so that the positioning rod 409 fixed at the bottom of the positioning post 406 is embedded in the matching cavity inside the locking post 6. At the same time, the latch 5, which is rotatably connected to the protruding position of the outer wall of the positioning post 406 through the rotating shaft, works in conjunction with the movement of the above components to lock the position of the moving mold base 2 and the fixed mold base 3.

[0037] As a further embodiment of the present invention, the contact surface between the limiting post 403 and the latch 5 is an inclined surface, and the limiting post 403 has a cavity inside that cooperates with the connecting rod 404 and the positioning post 406 to slide. The connecting rod 404 is slidably connected to the limiting rod 405, and the connecting rod 404 has a cavity inside that cooperates with the limiting rod 405 to slide.

[0038] In specific implementation, the contact surface between the limiting post 403 and the latch 5 is set as an inclined surface, which provides a structural basis for the subsequent movement of the limiting post 403 to drive the latch 5 to rotate. At the same time, the limiting post 403 has a cavity inside that is adapted to the sliding of the connecting rod 404 and the positioning post 406, ensuring that the connecting rod 404 can slide stably within the limiting post 403 when it drives the positioning post 406 to move. In addition, the connecting rod 404 is also slidably connected to the limiting rod 405. The cavity inside the limiting rod 405 that is adapted to the sliding of the limiting rod 405 can limit the sliding trajectory of the connecting rod 404, ensuring the stability of the overall components when linked, and assisting in the precise locking of the moving mold base 2 and the fixed mold base 3.

[0039] As a further embodiment of the present invention, a first spring 407 is provided between the limiting post 403 and the positioning post 406. One end of the first spring 407 is fixedly connected to the top end of the inner wall of the limiting post 403, and the other end of the first spring 407 is fixedly connected to the top end of the positioning post 406.

[0040] In specific implementation, a first spring 407 is set between the limiting post 403 and the positioning post 406. One end of the spring 407 is fixed to the top of the inner wall of the limiting post 403, and the other end is fixed to the top of the positioning post 406. When the limiting post 403 moves down with the lifting rod 402, and the positioning post 406 is limited and stops moving because the positioning rod 409 is embedded in the cavity of the locking post 6, the limiting post 403 will continue to move down relative to the positioning post 406, so that the first spring 407 is compressed and generates elastic force. This elastic force can help enhance the force of the limiting post 403 on the latch 5, and at the same time provide power for the subsequent component reset, ensuring the stability and smoothness of the locking and unlocking process of the moving mold base 2 and the fixed mold base 3.

[0041] As a further embodiment of the present invention, a second spring 408 is provided between the positioning post 406 and the latch 5. One end of the second spring 408 is fixedly connected to the outer wall of the positioning post 406, and the other end of the second spring 408 is fixedly connected to the inner wall of the latch 5.

[0042] In specific implementation, a second spring 408 is set between the positioning post 406 and the latch 5. One end of the spring 408 is fixed to the outer wall of the positioning post 406 and the other end is fixed to the inner wall of the latch 5. When the limiting post 403 moves down and pushes the latch 5 to rotate around the rotation axis of the protruding position of the outer wall of the positioning post 406 through the inclined surface, the second spring 408 is compressed and stores elastic potential energy, providing an auxiliary force for the reliable engagement of the latch 5 and the locking post 6. When unlocking, the second spring 408 releases elastic potential energy, which can push the latch 5 to reset and disengage from the engagement state with the locking post 6, ensuring the smooth unlocking process of the moving mold base 2 and the fixed mold base 3, and assisting in completing the opening and closing cycle of the mold 13.

[0043] As a further embodiment of the present invention, the exhaust assembly includes a rotating disk 801 that meshes with a motor via a gear set. A plurality of sliding blocks 802 are symmetrically arranged at equal angles on one side of the rotating disk 801. A base 803 is slidably connected to one side of the sliding block 802. A fixing rod 804 is fixed to one end of the protruding position of the rotating disk 801, and a connecting ring 805 is fixed to one end of the fixing rod 804.

[0044] In specific implementation, in the exhaust assembly, the rotating disk 801, which meshes with the motor through a gear set, rotates under the drive of the motor. Multiple sliding blocks 802, which are symmetrically arranged at equal angles on one side of the rotating disk 801, slide along the base 803 that is slidably connected to one side as the rotating disk 801 rotates, thereby adjusting the size of the exhaust port 7 on the mold 13. At the same time, the fixing rod 804, which is fixed at one end of the protruding position of the rotating disk 801, rotates synchronously with the rotating disk 801 and drives the connecting ring 805, which is fixed at one end, to move, providing power for the subsequent linkage cleaning assembly and other components to ensure the coordinated operation of exhaust adjustment and dirt cleaning.

[0045] As a further embodiment of the present invention, the rotating disk 801 has a cavity that slides at the protruding position of the top of the sliding block 802, and the base 803 has a cavity that slides at the protruding position of the bottom end of the sliding block 802.

[0046] In practice, the rotating disk 801 has a cavity adapted to slide the protruding position at the top of the sliding block 802, and the base 803 has a cavity adapted to slide the protruding position at the bottom of the sliding block 802. When the motor drives the rotating disk 801 to rotate through the gear set, the protruding position at the top of the sliding block 802 slides in the cavity of the rotating disk 801, and at the same time, its protruding position at the bottom slides in the cavity of the base 803. The double cavity limit guides the sliding block 802 to move stably along the preset trajectory, thereby realizing the precise adjustment of the exhaust port 7 exhaust port size and ensuring the balance between exhaust efficiency and anti-overflow effect.

[0047] As a further embodiment of the present invention, the cleaning component includes a rotating column 101 fixed at the central axis of the connecting ring 805, a sliding rod 104 slidably connected inside the rotating column 101, a limit block 103 fixed on the outer wall of the sliding rod 104, and a threaded groove 102 that cooperates with the limit block 103 on the rotating column 101.

[0048] In specific implementation, the rotating column 101 fixed at the central axis of the connecting ring 805 rotates synchronously with the connecting ring 805. The sliding rod 104 slidably connected inside the rotating column 101 has a limiting block 103 fixed on its outer wall embedded in the matching threaded groove 102 opened in the rotating column 101. When the rotating column 101 rotates, the threaded groove 102, through cooperation with the limiting block 103, drives the sliding rod 104 to slide axially inside the rotating column 101, thereby driving the scraping ring 9 connected to the sliding rod 104 to move inside the exhaust hole 7, thereby cleaning the dirt on the inner wall of the exhaust hole 7.

[0049] As a further embodiment of the present invention, the limiting component includes elastic telescopic blocks 121 provided on both sides of the lifting block 11, a push block 122 slidably connected inside the lifting block 11, and the contact surface between the lifting block 11 and the push block 122 is an inclined surface. A connecting frame 123 is fixed on one side of the push block 122, and the top of the connecting frame 123 is fixedly connected to the sliding rod 104. A fixing plate 125 is provided on both sides of the lifting block 11, and a positioning block 124 that cooperates with the elastic telescopic block 121 is provided on one side of the fixing plate 125.

[0050] In specific implementation, the elastic telescopic blocks 121 on both sides of the lifting block 11 cooperate with the positioning blocks 124 on the two side fixing plates 125 to limit the position of the lifting block 11. The push block 122, which is slidably connected inside the lifting block 11, has an inclined surface in contact with the lifting block 11. The top of the connecting frame 123 fixed on one side of the push block 122 is fixed to the sliding rod 104. When the sliding rod 104 moves, the push block 122 is driven to slide through the connecting frame 123. The inclined surface transmission causes the lifting block 11 to move. At the same time, the elastic telescopic blocks 121 and the positioning blocks 124 cooperate to realize the one-way limit of the lifting block 11, thereby adjusting the position of the lifting block 11.

[0051] As a further embodiment of the present invention, a handle 126 is fixed on one side of the fixing plate 125, the handle 126 penetrates the main body 1, and the elastic telescopic block 121 and the positioning block 124 are both triangular.

[0052] In practice, a handle 126 fixed on one side of the fixed plate 125 passes through the main body 1 for easy manual operation. The triangular elastic telescopic block 121 and the positioning block 124 cooperate with each other and use the characteristics of the triangular inclined plane to achieve unidirectional limiting of the lifting block 11. When it is necessary to release the limit and reset the lifting block 11, the fixed plate 125 and the positioning block 124 are moved by pulling the handle 126, disengaging from the cooperation with the elastic telescopic block 121, thereby releasing the limitation on the lifting block 11.

[0053] Working principle: When using this high-precision fully automatic vertical rubber injection molding machine, start the mold closing cylinder located at the bottom of the main body 1. Through the toggle mechanism or direct hydraulic transmission, drive the moving mold base 2 to move towards the fixed mold base 3 to close the mold 13. The injection cylinder pushes the injection stage forward, so that the nozzle closely fits the main runner bushing of the mold 13 to form a closed injection channel. The plasticized melt is pushed forward by the high pressure of the injection cylinder and moved forward by the screw. It is injected into the cavity of the mold 13 through the nozzle and the conveying channel for injection molding.

[0054] During injection molding, the viscosity of the molten material is determined by a sensor, and the motor is started. The motor drives the rotating disk 801 to rotate through a meshing gear set. The rotation of the rotating disk 801 drives multiple sliding blocks 802 to rotate through its cavity. When the sliding blocks 802 rotate, their protruding bottom ends slide within the cavity of the base 803. At this time, the closed vent 7 is opened along with the moving sliding block 802. The number of gear rotations is adjusted according to the viscosity of the molten material, thereby adjusting the degree of opening of the vent 7. When the viscosity of the molten material is high, its flow resistance is high. When the viscosity of the molten material is low, its flow resistance is small, and even if the vent hole 7 is slightly large, it is difficult for the molten material to overcome its own flow resistance and overflow from the vent hole 7 (similar to how viscous liquid is difficult to flow out from a narrow gap). Therefore, increasing the vent hole 7 can improve the venting efficiency and eliminate the problem of flash. When the viscosity of the molten material is low, its flow resistance is small, and a smaller vent hole 7 is required. Low viscosity molten material has good flowability. If the vent hole 7 is too large, the molten material will overflow from the vent hole 7 along with the gas, forming flash (thin rubber burrs appear at the vent hole 7).

[0055] When the rotating disk 801 rotates, it synchronously drives the fixed rod 804 to rotate, which in turn drives the connecting ring 805 fixedly connected to the fixed rod 804 to rotate. When the connecting ring 805 rotates, it synchronously drives the rotating column 101 fixed at its central shaft to rotate. When the rotating column 101 rotates, it drives the limiting block 103 to move through the threaded groove 102, which in turn drives the sliding rod 104 fixed to the limiting block 103 to slide inside the rotating column 101. This causes the scraping ring 9 fixed to the rotating column 101 to move inside the vent hole 7, scraping away the dirt on the inner wall of the vent hole 7. The blockage of the vent hole 7 is mostly due to the local accumulation of residues during the production process. These blockages are often concentrated near the orifice. Short-distance scraping can peel off this type of deposit from the inner wall through physical friction, completely restoring the designed orifice diameter of the vent hole 7 and avoiding false unblocking that misleads maintenance judgment. If long-distance deep scraping or high-pressure flushing is used, it may push the surface blockages into the depth of the orifice, causing secondary blockage.

[0056] When mold 13 is closed, the motor drives the lead screw 401 to rotate. The rotation of the lead screw 401 causes the lifting rod 402 to slide within the fixed mold base 3. When the lifting rod 402 moves, it causes the limiting post 403 at its bottom to move, and through the limiting rod 405 set inside it, it causes the connecting rod 404 to move, which in turn causes the positioning post 406 fixed to the bottom of the connecting rod 404 to move synchronously. When the positioning rod 409 fixed to the bottom of the positioning post 406 moves into the cavity opened by the locking post 6, the positioning post 406 stops moving. At this time, the lifting rod 402 drives the limiting post 403 to continue moving. At this time, the limiting rod 405 slides within the cavity opened by the connecting rod 404, and the first spring 407 located between the limiting post 403 and the positioning post 406 is compressed. Since the contact surface between the limiting post 403 and the latch 5 is an inclined surface, when the limiting post 403 continues to move downward, it drives the latch 5 to rotate around the protruding position of the positioning post 406 through the inclined surface (at this time, the second spring 408 is compressed), thereby the latch 5 and the locking post 6 engage, realizing additional mold locking between the moving mold base 2 and the fixed mold base 3. In addition to the basic mold clamping force, the mold clamping force is supplemented according to the dynamic changes in the molding process to offset the expansion force of the molten material on the mold 13, avoid defects and ensure product accuracy. The basic mold clamping force cannot be evenly transmitted to the parting surface of the mold 13, and local pressure weak areas appear. Even if the overall mold clamping force meets the standard, the weak areas may still overflow. Additional mold clamping can cover the accuracy deviation by increasing the overall force or local pressure supplementation, and ensure that the parting surface is sealed in the whole area.

[0057] When the sliding rod 104 moves, it drives the push block 122 to move synchronously through the connecting frame 123. Since the contact surface between the lifting block 11 and the push block 122 is an inclined surface, when the push block 122 moves, it drives the lifting block 11 to move within the moving mold base 2 through the inclined surface. When the lifting block 11 moves, it drives the elastic telescopic block 121 inside it to move. When the elastic telescopic block 121 moves to contact the positioning block 124, the inclined surface of the elastic telescopic block 121 contacts the inclined surface of the positioning block 124, and the elastic telescopic block 121 is compressed into the interior of the lifting block 11. When the horizontal surfaces of the elastic telescopic block 121 and the positioning block 124 are in contact, the lifting block 11 cannot move upward, realizing the unidirectional movement of the lifting block 11. The locking post 6 at the top of the lifting block 11 is fixed in position. The rotation angle of the connecting ring 805 and the moving distance of the sliding rod 104 are adjusted by adjusting the viscosity of the molten material, thereby adjusting the... The movement distance of the lifting block 11 is affected by the high viscosity of the molten material, which results in high flow resistance. To fill the mold cavity, the injection pressure needs to be increased, and the injection pressure is directly transmitted to the inside of the mold cavity, causing the mold cavity pressure to rise. If the clamping force is not increased synchronously, the mold cavity pressure will push open the parting surface of the mold 13, causing the molten material to overflow (overflow). Therefore, the clamping force must be increased to balance the mold cavity pressure. The position of the locking pin 6 is changed by moving the lifting block 11. At this time, the compression of the first spring 407 increases, increasing the pressure of the limit pin 403 and the positioning pin 406, and the locking force is strengthened accordingly. When the lifting block 11 needs to be reset, the handle 126 is manually pulled to move the fixing plate 125, releasing the restriction of the positioning block 124 on the elastic telescopic block 121. This allows the push block 122 to be reset through the closure of the vent hole 7, which in turn drives the lifting block 11 to be reset.

[0058] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision fully automatic vertical rubber injection molding machine, comprising a main body (1), characterized in that: The main body (1) is provided with a moving mold base (2) and a fixed mold base (3). A locking component is provided between the moving mold base (2) and the fixed mold base (3), and the positions of the moving mold base (2) and the fixed mold base (3) are locked by the locking component. A locking post (6) is fixed at the top of the moving mold base (2). Multiple latches (5) are arranged around the top of the locking post (6) at equal angles. A mold (13) is fixed at the top of the moving mold base (2). An exhaust hole (7) is opened inside the mold (13). An exhaust assembly is provided inside the vent (7), and the size of the exhaust port of the vent (7) is adjusted by the exhaust assembly. A scraping ring (9) is provided inside the vent (7), and a cleaning assembly is provided on one side of the scraping ring (9). The cleaning assembly drives the scraping ring (9) to clean the dirt inside the vent (7). A lifting block (11) is fixed at the bottom of the locking post (6). A limit assembly is provided outside the lifting block (11), and the position of the lifting block (11) is adjusted by the limit assembly. The exhaust assembly includes a rotating disk (801) meshing with a motor via a gear set. Multiple sliding blocks (802) are symmetrically arranged at equal angles on one side of the rotating disk (801). A base (803) is slidably connected to one side of each sliding block (802). A fixing rod (804) is fixed to one protruding end of the rotating disk (801), and a connecting ring (805) is fixed to one end of the fixing rod (804). The rotating disk (801) has a cavity that slides at the protruding top of the sliding block (802), and the base (803) has a cavity that slides at the protruding bottom of the sliding block (802). The cleaning assembly includes a rotating column (101) fixed to the central axis of the connecting ring (805). A sliding rod (104) is slidably connected inside the rotating column (101), and a limit block (103) is fixed to the outer wall of the sliding rod (104). The rotating column (101) has a threaded groove (102) that cooperates with the limiting block (103). The limiting component includes elastic telescopic blocks (121) on both sides of the lifting block (11). A push block (122) is slidably connected inside the lifting block (11), and the contact surface between the lifting block (11) and the push block (122) is an inclined surface. A connecting frame (123) is fixed on one side of the push block (122), and the top of the connecting frame (123) is fixedly connected to the sliding rod (104). A fixing plate (125) is provided on both sides of the lifting block (11). A positioning block (124) that cooperates with the elastic telescopic block (121) is provided on one side of the fixing plate (125). A handle (126) is fixed on one side of the fixing plate (125). The handle (126) penetrates the main body (1). The elastic telescopic block (121) and the positioning block (124) are both triangular.

2. The high-precision fully automatic vertical rubber injection molding machine according to claim 1, characterized in that: The locking assembly includes a lead screw (401) fixed in the fixed mold base (3). One end of the lead screw (401) is fixedly connected to the output end of the motor. The outer wall of the lead screw (401) is connected to a lifting rod (402) by a thread. The lifting rod (402) is slidably limited to the fixed mold base (3). The bottom end of the lifting rod (402) is fixed with a limit post (403). The limit post (403) is slidably connected with a connecting rod (404). The bottom end of the connecting rod (404) is fixed with a positioning post (406). The bottom end of the positioning post (406) is fixed with a positioning rod (409). The locking post (6) has a cavity that matches the positioning rod (409). The protruding part of the outer wall of the positioning post (406) is rotatably connected to the latch (5) through a rotating shaft.

3. The high-precision fully automatic vertical rubber injection molding machine according to claim 2, characterized in that: The contact surface between the limiting post (403) and the latch (5) is an inclined surface, and the limiting post (403) has a cavity inside that accommodates the sliding of the connecting rod (404) and the positioning post (406). The connecting rod (404) is slidably connected to the limiting rod (405), and the connecting rod (404) has a cavity inside that accommodates the sliding of the limiting rod (405).

4. The high-precision fully automatic vertical rubber injection molding machine according to claim 2, characterized in that: A first spring (407) is provided between the limiting post (403) and the positioning post (406). One end of the first spring (407) is fixedly connected to the top of the inner wall of the limiting post (403), and the other end of the first spring (407) is fixedly connected to the top of the positioning post (406).

5. A high-precision fully automatic vertical rubber injection molding machine according to claim 2, characterized in that: A second spring (408) is provided between the positioning post (406) and the latch (5). One end of the second spring (408) is fixedly connected to the outer wall of the positioning post (406), and the other end of the second spring (408) is fixedly connected to the inner wall of the latch (5).

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