Side pressure locking rubber injection rain boot station mechanism

Abstract

A side-pressing mold locking rubber injection rain boot station mechanism, comprising an upper mold and a lower mold whose center lines coincide when the mold is closed, the lower mold being movable toward the upper mold, characterized in that the lower mold is translated out of the closed mold position, and the upper mold is provided with a material taking and overturning assembly for obliquely ejecting the finished product out of the vertical state after the injection is completed. The utility model has the beneficial effects that the lower mold is translated out of the closed mold position, the operator can safely place the last outside the mold, without needing to stretch into the mold, thus significantly reducing the risk of injury and labor intensity, while avoiding product damage; the material taking and overturning assembly obliquely ejects the finished product, so that the operator can directly take the material outside the closed mold position, reducing the operation time, improving the efficiency, and ensuring the stability of the mold positioning accuracy, preventing quality fluctuations.

Description

Technical Field

[0001] This utility model relates to an injection molding machine structure, and more particularly to a side-pressure locking rubber injection boot positioning mechanism. Background Technology

[0002] Rubber injection molding machines are widely used in footwear manufacturing, automotive sealing parts, and industrial rubber product production, especially in the footwear industry where they are used for the efficient molding of rubber soles. The operation typically involves an operator manually placing a last (a type of mold) onto the injection molding machine's mold table. The machine then closes the mold, injects liquid rubber material under high pressure, and performs a vulcanization and curing process at high temperature. Finally, the mold is opened to remove the finished sole. This process achieves rapid and uniform rubber molding in mass production, but requires frequent operator intervention to place and remove the last to ensure accurate mold positioning and product quality. The entire process emphasizes a balance between automation and manual labor, and is commonly found in small and medium-sized factories to improve production efficiency and reduce costs. On average, each machine can process hundreds to thousands of products per day.

[0003] However, existing large rubber injection molding machines typically have their mold tables installed high up, a design choice made to optimize space utilization or for safety isolation. Operators must frequently stretch to insert the last and remove the finished product, increasing labor intensity, extending operating time, and increasing the risk of fatigue, errors, or product damage. More seriously, working inside the mold poses significant safety hazards, especially in continuous production. This inconvenience reduces overall efficiency and can affect mold positioning accuracy, leading to quality fluctuations. These drawbacks limit the machine's applicability, placing an additional burden on shorter or less physically capable operators. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a side-pressure locking rubber injection rain boot positioning mechanism that solves the problems of inconvenience in high-altitude operations and reduces safety risks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a side-pressure locking rubber injection boot positioning mechanism, comprising an upper mold and a lower mold whose center lines coincide when the mold is closed, wherein the lower mold can move toward the upper mold, characterized in that: the lower mold can be translated out from the mold closing position, and the upper mold is provided with a material picking and flipping component that, after injection molding, obliquely ejects the finished product from a vertical state.

[0006] The beneficial effects of this utility model are as follows: By translating the lower mold out from the mold-closing position, operators can safely place the last outside the mold without having to reach inside, significantly reducing the risk of injury and labor intensity, while also preventing product damage; the material-retrieving and flipping component ejects the finished product at an angle, allowing operators to directly retrieve the material outside the mold-closing position, reducing operation time, improving efficiency, and ensuring stable mold positioning accuracy to prevent quality fluctuations. Furthermore, this design is adaptable to operators of different heights, enhancing the equipment's versatility and safety. As a preferred method, the lower mold's translation out can be achieved via a sliding guide rail and hydraulic push rod mounted on the base: the hydraulic push rod drives the lower mold to move horizontally along the guide rail to an external workstation; after the operator places the last, the push rod reverses its direction and returns to the mold-closing position, enabling full external operation. As another preferred method, the material-retrieving and flipping component's angled ejection may include a hydraulic cylinder fixed to the top and a hinged push rod: when the cylinder extends or retracts, it pushes the push rod to deflect (its angle can be set between 0-60 degrees), causing the finished product to be ejected along a preset angle to a safe operating table position, completing the flat unloading.

[0007] Furthermore, the upper mold includes a left mold and a right mold that can be opened and closed laterally, and an injection cavity is formed between the left mold, the right mold and the lower mold. The material taking and flipping assembly operates after the left mold and the right mold are opened laterally.

[0008] The upper mold is divided into a left mold and a right mold that open laterally. The injection cavity is exposed after the mold opens, allowing the material handling and flipping assembly to directly act on the finished product, reducing operation steps and improving safety. The lateral opening and closing design ensures that the injection cavity is evenly stressed, preventing product deformation and improving injection quality and efficiency. As a preferred method, the opening and closing of the left and right molds can be achieved through a double-acting hydraulic cylinder and guide arm located at the top: the hydraulic cylinder drives the two upper molds to separate or close synchronously along the slide, forming a complete and closed injection cavity, and providing working space for the material handling and flipping assembly after the mold opens.

[0009] Furthermore, a transverse opening and closing assembly is provided between the left mold and the right mold. The transverse opening and closing assembly includes a telescopic opening and closing drive component and rotating arms respectively connected to both ends of the opening and closing drive component. The middle part of the rotating arm is sleeved on the guide column of the injection molding machine, and the other end of the rotating arm is fixed to the end face of the left mold or the right mold facing away from the injection cavity.

[0010] The lateral opening and closing assembly utilizes a rotating arm and guide post to achieve precise opening and closing, reducing frictional loss and extending equipment life. The extension and retraction of the opening and closing drive component drives the rotating arm to rotate, ensuring synchronous movement of the left and right molds, maintaining the symmetry of the injection cavity, and improving the precision and consistency of the finished product. As a preferred method, the opening and closing drive component can be a hydraulic cylinder, with the rotating arm sleeved on the guide post via bearings: when the hydraulic cylinder extends and retracts, the rotating arm rotates around the guide post as a fulcrum, pushing the upper mold to open and close laterally, achieving efficient force transmission.

[0011] Furthermore, it also includes an upper mold cover, wherein the upper mold and the material taking and flipping assembly are respectively disposed on both sides of the upper mold cover. The material taking and flipping assembly includes a deflection drive and an ejection drive disposed on the upper mold cover. The deflection drive is used to drive the finished product in the injection cavity to deflect, and the ejection drive is used to eject the finished product in the injection cavity.

[0012] The deflection drive and ejection drive operate in stages. First, the finished product is deflected to release adhesion, and then ejected to complete unloading, reducing the risk of product damage. The fixed design of the upper mold cover simplifies the structure and reduces maintenance costs. As a preferred approach, the deflection drive can be designed as a hydraulically driven eccentric wheel: when the stepper motor rotates, the eccentric wheel pushes the finished product to partially deflect, separating it from the mold surface. As another preferred approach, the ejection drive can use a linear motor and ejector pins: the linear motor drives the ejector pins to move linearly, ejecting the finished product to the outside.

[0013] Furthermore, the material handling and flipping assembly also includes a rotating shaft that passes through the upper mold cover and an ejector block fixed on the rotating shaft to form a rotatable connection. The ejector drive is fixed on the ejector block and rotates with it. The deflection drive is hinged to the side of the rotating shaft exposed outside the upper mold cover. The deflection drive drives the rotating shaft to rotate during extension and retraction.

[0014] The rotating shaft and ejector block structure reduce deflection torque and lower energy consumption; the deflection drive is directly hinged to the rotating shaft, ensuring precise operation, avoiding jamming, and improving unloading reliability and efficiency. The deflection drive uses a hydraulic cylinder, which drives the rotating shaft to rotate via a connecting rod during extension and retraction; the top hydraulic cylinder pushes the connecting rod to form an oblique angle to eject the last and finished product, achieving convenient, safe, and smooth unloading.

[0015] Furthermore, it also includes a translation component for driving the lower mold to move out of the mold closing position. The translation component includes a drive cylinder and two track plates symmetrically arranged on both sides of the drive cylinder. One end of the drive cylinder is fixed to the lower mold. A transmission chain and a translation drive component for driving the transmission chain to rotate are provided on both track plates. A transmission hook is provided on the transmission chain, and both ends of the lower mold are respectively locked on the transmission hook.

[0016] When the drive cylinder extends or retracts, it is used to move the lower mold out of the mold closing position. The symmetrically designed track plate is used to ensure smooth translation of the lower mold and prevent deviation. The transmission chain and translation drive components provide reliable auxiliary transmission, reduce vibration, and ensure operational safety and mold positioning accuracy.

[0017] Furthermore, the translation component also includes a support platform, which provides support for the lower mold when it moves out of the mold closing position.

[0018] The support platform is level with the lower mold platform to provide auxiliary support when the lower mold is moved out, preventing accidental falls and enhancing safety. The support design is simple and reliable, reducing equipment failures and maintenance needs. As a preferred option, the support platform can be integrated into the top of the large hydraulic cylinder lifting platform, using a hydraulic drive structure to smoothly move the lower mold off the operating platform and ensure stable stopping. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the horizontal opening and closing component according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the material handling and flipping assembly according to an embodiment of the present invention; Figure 4 This is a partial enlarged view of the track plate in an embodiment of this utility model. Detailed Implementation

[0020] This utility model embodiment provides a side-pressure locking rubber injection rain boot positioning mechanism, such as... Figure 1-4 As shown: The system includes an upper mold 2 and a lower mold 3. In the closed state, the center lines of the upper mold 2 and the lower mold 3 coincide, ensuring injection molding accuracy. The lower mold 3 can move vertically towards the upper mold 2 to achieve mold closing and opening actions. The lower mold 3 also has a translation function, allowing it to move horizontally out of the mold closing position, facilitating the safe placement of the mold last by operators outside the mold. The upper mold 2 integrates a material-retrieving and tilting assembly 25 at its top, used to obliquely eject the finished product from the upper mold 2 outside the mold closing position after injection molding, allowing personnel to retrieve the material from a safe area and reducing operational risks.

[0021] The upper mold 2 consists of a left mold 21 and a right mold 22, which can open and close laterally. A lateral opening and closing assembly 24 is installed between the left mold 21 and the right mold 22. This assembly includes a telescopic opening and closing drive 241 and two rotating arms 242. The middle part of each rotating arm 242 is fitted onto a guide post of the injection molding machine (the guide post is a standard component in existing technology, providing support and guidance). The distal end of the rotating arm 242 is fixed to the end face of the left mold 21 facing away from the injection cavity, and the distal end of the other rotating arm 242 is fixed to the end face of the right mold 22 facing away from the injection cavity. When the opening and closing drive 241 extends or retracts, it drives the rotating arms 242 to rotate around the guide post, thereby driving the left mold 21 and the right mold 22 to open and close laterally. An upper mold cover 23 is also included. The left mold 21, the right mold 22, and the material handling and flipping assembly 25 are respectively disposed on both sides of the upper mold cover 23, covering the left mold 21 and the right mold 22. The material handling and flipping assembly 25 is disposed within the upper mold cover 23 and includes a deflection drive 251, an ejection drive 252, a rotating shaft 253, and an ejection block 254. The rotating shaft 253 passes through the upper mold cover 23, and the ejection block 254 is fixed to the rotating shaft 253 to form a rotatable connection. The deflection drive 251 is hinged to the exposed end of the rotating shaft 253. When the deflection drive 251 extends or retracts, it drives the rotating shaft 253 to rotate, causing the ejection block 254 to deflect. The ejection drive 252 is independently disposed and is used to directly eject the finished product. The material handling and flipping assembly 25 only activates after the left mold 21 and right mold 22 are opened laterally to ensure smooth demolding of the finished product.

[0022] It also includes a translation component 4 for driving the lower mold 3 to move horizontally out of the mold closing position. The translation component 4 includes a drive cylinder 45 and two track plates 41 symmetrically arranged on both sides of the drive cylinder 45. One end of the drive cylinder 45 is fixed to the lower mold 3. Each track plate 41 is equipped with a conveyor chain 411 and a translation drive component 43 for driving the conveyor chain 411. Each conveyor chain is provided with a transmission hook. Both ends of the lower mold 3 are respectively engaged with the conveyor hooks 412 and move horizontally with the movement of the conveyor chain 411 and the drive cylinder 45. The translation component 4 also has a support platform 44, which is fixed to the bottom of the lower mold 3 or an adjacent structure (such as a frame) to provide support when the lower mold 3 moves out and prevent the lower mold 3 from falling accidentally.

[0023] The working principle of this mechanism is as follows: First, the lower mold 3 descends to be flush with the support platform 44. The translation drive 43 and drive cylinder 45 are activated, driving the conveyor chain 411 to move the lower mold 3 horizontally from the mold closing position to the outside. The operator places the last into the lower mold 3 from outside the mold. Subsequently, the translation component 4 drives the lower mold 3 to move back to the mold closing position. The lower mold 3 is vertically raised and contacts the upper mold 2 to close. The opening and closing drive 241 of the lateral opening and closing component 24 retracts, driving the rotating arm 242 to rotate, causing the left mold 21 and right mold 22 to close laterally, forming a sealed injection cavity together with the lower mold 3. Rubber material is injected into the injection cavity for molding. After injection molding is completed, the lower mold 3 descends vertically to separate. The opening and closing drive 241 extends, driving the left mold 21 and right mold 22 to open laterally. The material handling and flipping assembly 25 is activated: the deflection drive 251 extends and retracts, driving the rotating shaft 253 to rotate, causing the ejector block 254 to deflect. The ejection drive 252 then ejects the finished product out of the injection cavity, pushing it obliquely out of the mold closing position. The operator safely retrieves the material from the outside. The entire process is coordinated by an existing technology control system (such as a PLC) to control the actions of each drive component.

[0024] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A side-pressure locking rubber injection molding rain boot positioning mechanism, comprising an upper mold and a lower mold whose center lines coincide when the mold is closed, wherein the lower mold is movable toward the upper mold, characterized in that: The lower mold can be moved out from the mold closing position, and the upper mold is provided with a material picking and flipping component that will push the finished product out obliquely from the vertical state after injection molding.

2. The side-pressure locking rubber injection boot positioning mechanism according to claim 1, characterized in that: The upper mold includes a left mold and a right mold that can be opened and closed laterally. An injection cavity is formed between the left mold, the right mold and the lower mold. The material taking and flipping assembly operates after the left mold and the right mold are opened laterally.

3. The side-pressure locking rubber injection rain boot positioning mechanism according to claim 2, characterized in that: A transverse opening and closing assembly is provided between the left mold and the right mold. The transverse opening and closing assembly includes a telescopic opening and closing drive component and rotating arms respectively connected to both ends of the opening and closing drive component. The middle part of the rotating arm is sleeved on the guide column of the injection molding machine, and the other end of the rotating arm is fixed to the end face of the left mold or the right mold facing away from the injection cavity.

4. The side-pressure locking rubber injection rain boot positioning mechanism according to claim 2, characterized in that: It also includes an upper mold cover, with the upper mold and the material taking and flipping assembly respectively disposed on both sides of the upper mold cover. The material taking and flipping assembly includes a deflection drive and an ejection drive disposed on the upper mold cover. The deflection drive is used to drive the finished product in the injection cavity to deflect, and the ejection drive is used to eject the finished product in the injection cavity.

5. The side-pressure locking rubber injection boot positioning mechanism according to claim 4, characterized in that: The material handling and flipping assembly also includes a rotating shaft that passes through the upper mold cover and an ejector block that is fixed on the rotating shaft to form a rotatable connection. The ejector drive is fixed on the ejector block and rotates with it. The deflection drive is hinged to the side of the rotating shaft exposed outside the upper mold cover. The deflection drive drives the rotating shaft to rotate when it extends or retracts.

6. The side-pressure locking rubber injection boot positioning mechanism according to claim 1, characterized in that: It also includes a translation component for moving the lower mold from the mold closing position. The translation component includes a drive cylinder and two track plates symmetrically arranged on both sides of the drive cylinder. One end of the drive cylinder is fixed to the lower mold. A transmission chain and a translation drive component for driving the transmission chain to rotate are provided on both track plates. A transmission hook is provided on the transmission chain, and both ends of the lower mold are respectively locked on the transmission hook.

7. The side-pressure locking rubber injection boot positioning mechanism according to claim 6, characterized in that: The translation component also includes a support platform, which provides support for the lower mold when it moves out of the mold closing position.

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