Bottle cap production mold closing mechanism and control method thereof

Abstract

The invention relates to the technical field of bottle cap production, in particular to a bottle cap production mold closing mechanism and a control method thereof, and solves the problem that in the downward pressing forming process of a bottle cap production mold, a metal ring which is not installed in the bottle cap production mold can damage the mold, the bottle cap production mold closing mechanism comprises a shifting rod mechanism, a driving shaft is arranged in the shifting rod mechanism, and a driving wheel is arranged on the driving shaft; the shifting rod mechanism is connected with one end of a sliding block, the end of the sliding block extends into the shifting rod mechanism and is arranged above the driving wheel in a protruding mode, and the other end, away from the shifting rod mechanism, of the sliding block is slidably connected with an ejector block. The driving shifting rod mechanism drives the driving shaft to lift, so that the driving wheel is contacted with or separated from the convex end of the sliding block; the sliding block is pushed to move horizontally through contact between the driving wheel and the protruding end of the sliding block, and the ejecting block is vertically ejected. The linkage reset rod moves along with the shifting rod mechanism to support and limit or reset and release the sliding block; and the ejection block vertically moves to drive the execution mold to open or close. The invention is used for the compression molding mold and the control thereof in bottle cap production.

Description

Technical Field

[0001] The present invention relates to the technical field of bottle cap production, in particular to a mold clamping mechanism for a bottle cap production mold and a control method thereof. Background Art

[0002] The working process of bottle cap production equipment covers the entire process from raw material forming to final packaging of bottle caps. Its core mechanisms include forming equipment, assembly equipment, sealing and detection equipment, capping equipment, and an automated control system. Each module works together to ensure efficient and precise production.

[0003] The forming equipment is the basic link in bottle cap production, mainly including injection molding machines and compression molding machines. The mold clamping components, namely the bottle cap forming molds, are the core equipment for plastic bottle cap production and are also divided into two types: injection molding and compression molding. Injection molding molds inject molten plastic into a precision cavity under high pressure and form bottle caps with complex structures after cooling. Its core includes multi-cavity cavities, a hot runner system, and an ejection mechanism, featuring high efficiency and high precision. Compression molding molds use semi-plasticized blanks to be pressurized and cooled for forming, with a lower process temperature and suitable for continuous production. The key components include a metering extrusion device and a rotating disk mold set. Injection molds are suitable for bottle caps with high complexity, while compression molds have a cost advantage in the production of standardized threaded caps.

[0004] When the mold clamping mechanism of the compression molding device performs compression molding on the bottle cap, sometimes the bottle cap product needs to synchronously install a built-in metal ring for fixing and strengthening the plastic bottle cap inside the bottle cap during the bottle cap forming process. This requires the metal ring to be first sleeved on the compression molding mold, and then through compression molding, the bottle cap is directly formed around the metal ring on the mold, so that the metal ring is directly fixed inside the bottle cap during the forming process. In the prior art, when performing bottle cap forming processing in this process, since the mold clamping and forming process is completed along with the downward pressing action, that is, the mechanism presses downward while completing the mold clamping; however, during this process, when the sleeving and installation position of the metal ring on the mold is offset, the metal ring is not correctly installed during the downward pressing and forming process of the mold, which will cause extrusion and wear to the mold, thus damaging the mold, causing serious losses, and hindering subsequent bottle cap production. Summary of the Invention

[0005] To solve the problem that the metal ring with incorrect internal installation in the bottle cap production mold will damage the mold during the downward pressing and forming process in the prior art, the present invention provides a mold clamping mechanism for a bottle cap production mold and a control method thereof.

[0006] The technical solution adopted by the present invention is:

[0007] A bottle cap production mold clamping mechanism, comprising a lever mechanism, a driving shaft is arranged in the lever mechanism, a driving wheel is arranged on the driving shaft, the lever mechanism is connected to one end of a slider, the end of the slider extends into the lever mechanism and is arranged above the driving wheel in a convex shape, and the other end of the slider away from the lever mechanism is slidably connected to a top block;

[0008] Among them, the connection between the slider and the top block is connected by setting two inclined surfaces that are in contact and sliding connection. The lever mechanism is used to drive the driving shaft and the driving wheel to rise and fall so that the driving wheel contacts or separates from the end of the slider. The slider is used to translate after contacting the driving wheel through the raised end and lift the top block through the contact and sliding of the inclined surfaces. The top block is used to open or close the bottle cap production mold by externally connecting the push plate and driving the push plate to move.

[0009] Furthermore, the lever mechanism is connected to a first connecting plate, the first connecting plate is connected to a reset rod, a reset mounting hole for mounting the reset rod is provided on the slider, the bottom of the reset rod passes through the reset mounting hole and is arranged in the slider, and the bottom end of the reset rod is connected to a limited support mechanism;

[0010] Among them, the first connecting plate is used to drive the reset rod to move synchronously through the movement of the lever mechanism, and the limit support mechanism is used to separate from or contact the slider through the downward pressure or upward movement of the reset rod, and allow the slider to be reset or support and limit the slider, so that the top block in contact with the slider is reset or supported and lifted.

[0011] Furthermore, the limit support mechanism includes a stopper connected to the bottom end of the reset rod and a limit frame sleeved on the outer surface of the stopper, the bottom of the stopper is connected to a spring, the bottom of the slider is provided with a bottom limit groove matched with the stopper, and the top surface of the limit frame is connected to the slider;

[0012] Among them, the limit frame is used to limit the movement direction of the block to be the same as the lifting direction of the reset rod, and the block is used to cooperate with the bottom limit groove of the block after following the rise of the reset rod and act on the slider through the prestress of the spring, so as to limit the reset and retraction of the slider.

[0013] Furthermore, a pressure block is sleeved on the outer surface of the limit frame, and the top surface of the pressure block and the top surface of the limit frame are arranged in the same plane to form a moving plane of the slider; the pressure block is used to support the slider to perform translational movement along the top surface of the pressure block and the limit frame during the lifting and resetting actions.

[0014] Further, a driven shaft is also arranged inside the lever mechanism. A driven wheel is arranged on the driven shaft. The driven wheel is connected and in transmission cooperation with the driving wheel. A support mechanism is connected to the outside of the lever mechanism. A wear-resistant plate for frictionally cooperating with the driven wheel is arranged on the support mechanism. The wear-resistant plate is arranged on the support mechanism on the side close to the lever mechanism.

[0015] Further, the width of the top surface of the top block is set to be greater than the width of the bottom surface. The side of the top block opposite to the inclined surface is set as a vertical plane perpendicular to the translation direction of the slider. The vertical plane of the top block is in close contact with and slidably connected to an end limiting block. Wherein, the end limiting block is used to limit the moving direction of the top block to the vertical direction from the vertical plane side of the top block when the top block applies pressure to one side of the inclined surface of the slider.

[0016] A control method for a mold clamping mechanism of a bottle cap production mold includes the following steps:

[0017] S100. Drive the lever mechanism to drive the driving shaft to rise and fall, so that the driving wheel contacts or separates from the protruding end of the slider;

[0018] S200. Push the slider to translate through the contact between the driving wheel and the protruding end of the slider, and convert the horizontal displacement into the vertical jacking of the top block by the sliding cooperation between the slider and the inclined surface of the top block;

[0019] S300. The linkage reset rod moves along with the lever mechanism, and the slider is supported, limited or reset and released through the limit support mechanism;

[0020] S400. Drive the push plate to perform the mold opening or closing action of the mold through the vertical movement of the top block.

[0021] Further, the driving process of the lever mechanism in step S100 further includes:

[0022] After controlling the driving shaft to rise along with the lever mechanism, the driven wheel engaged with the driving wheel contacts the wear-resistant plate of the support mechanism. The radial runout of the driving wheel is eliminated through the sliding friction between the driven wheel and the wear-resistant plate of the support mechanism, and a supporting force is provided for the lever mechanism through the pressure applied by the wear-resistant plate to the driven wheel;

[0023] Wherein, the wear-resistant plate is made of wear-resistant material, and the friction coefficient of the wear-resistant plate and the contact pressure with the driven wheel are set so that the driven wheel does not slip during the lifting and lowering stroke.

[0024] Further, the control method of the top block in step S200 further includes: the included angle between the contact surface of the inclined surface of the slider and the inclined surface of the top block and the moving direction of the slider is controlled to be 30° - 60°, so that the horizontal thrust applied by the slider to the top block generates vertical component forces of different magnitudes according to the size of the included angle.

[0025] Further, the motion control of the limit support mechanism in step S300 further includes:

[0026] When the lever mechanism drives the reset rod to rise, the stopper is embedded in the bottom limit groove of the slider under the action of the spring pre-tightening force, forming a rigid block to the translational movement of the slider; during the reset stage of the slider, control the reset rod to press down to drive the stopper to compress the spring and withdraw from the bottom limit groove, and the limit frame maintains the vertical movement track of the stopper to reset the slider; during the translation of the slider, the pressure block and the top surface of the limit frame jointly form a translational guide plane of the slider.

[0027] The beneficial effects of the present invention are:

[0028] The mold clamping mechanism of the bottle cap production mold of the present invention controls the contact and separation between the driving wheel and the convex end of the slider through the lever mechanism, and realizes the step-by-step execution of actions such as mold clamping and pressing down: first, the driving wheel rises to push the slider to move horizontally, and uses the inclined contact surface to vertically lift the top block to complete mold opening, and at this time, install the metal ring; after the metal ring is installed, perform the above steps in reverse, the lever mechanism drives the driving wheel to descend, the slider retracts, the top block descends and the push plate resets to realize mold clamping. After the mold clamping is completed, if it is found that the mold clamping is abnormal due to the abnormal position of the metal ring, the lever mechanism will no longer continue to press down and open the mold for inspection and position repair to avoid damage to the mold caused by the metal ring under pressure; if the mold clamping is normal, the lever mechanism will continue to press down to complete the compression molding. The mold clamping mechanism of the bottle cap production mold of the present invention and its control method avoid the problem of mold wear caused by the offset of the metal ring in the synchronous pressing down and mold clamping operations in the prior art, and realize the timing control of "first mold clamping and positioning, then pressing down and molding" through the mechanical structure, which not only ensures the successful alignment of the metal ring and the mold, but also eliminates the risk of the metal ring being misaligned and squeezing the mold during the pressing down and molding process, and significantly improves the mold life and product qualification rate. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the mold clamping mechanism of the bottle cap production mold of the present invention;

[0030] Figure 2 It is a flow chart of the control method of the mold clamping mechanism of the bottle cap production mold of the present invention.

[0031] Reference Signs:

[0032] 1 - Gantry, 2 - Wear-resistant plate, 3 - Lever mechanism, 4 - Reset rod, 5 - Slider, 6 - Top block, 7 - Pressure block, 8 - Limit frame, 9 - Stopper, 10 - Driving shaft, 11 - Driving wheel, 12 - Driven shaft, 13 - Driven wheel, 14 - End limit block. Detailed Embodiments

[0033] The present invention will be described in detail below with reference to the drawings and embodiments.

[0034] Embodiment 1: A die closing mechanism for a bottle cap production mold, as Figure 1 shown, including a lever mechanism 3. A driving shaft 10 is arranged inside the lever mechanism 3, and a driving wheel 11 is arranged on the driving shaft 10. One end of the lever mechanism 3 is connected to a slider 5. The end of the slider 5 extends into the lever mechanism 3 and is arranged in a convex shape above the driving wheel 11. The other end of the slider 5 away from the lever mechanism 3 is slidably connected to a top block 6;

[0035] Wherein, the connection between the slider 5 and the top block 6 is in contact and slidably connected through two inclined surfaces. The lever mechanism 3 is used to drive the driving shaft 10 and the driving wheel 11 to move up and down so that the driving wheel 11 contacts or separates from the end of the slider 5. The slider 5 is used to translate after contacting the driving wheel 11 through its convex end and jack up the top block 6 through the contact sliding of the inclined surface. The top block 6 is used to externally connect a push plate and drive the push plate to move to open or close the bottle cap production mold.

[0036] The core function of the die closing mechanism of the bottle cap production mold in this embodiment is to separate the die closing action, that is, the mold opening and closing action, from the final pressing and forming action. One end of the slider 5 is designed in a convex shape, extends into the lever mechanism 3 and is suspended above the driving wheel 11; the other end of the slider 5 is slidably connected to the top block 6 through two mutually fitting inclined surfaces. The working process of the mechanism is as follows: When it is necessary to close or open the mold, the lever mechanism 3 is driven to drive the driving shaft 10 and the driving wheel 11 to move up and down. When the driving wheel 11 rises, its wheel surface contacts and pushes up the convex end of the slider 5. Since the slider 5 is restricted, this pushing force forces the slider 5 to translate horizontally (as Figure 1 shown, when the driving wheel 11 rises and contacts the slider 5, the slider 5 moves to the right. When the driving wheel 11 descends and separates from the slider 5, the slider 5 moves back to the left); when the slider 5 translates, the inclined surface in contact with the top block 6 slides accordingly. Due to the action of the inclined surface, the horizontal movement of the slider 5 is converted into the vertical lifting movement of the top block 6. The top block 6 is externally connected to a push plate, and the push plate directly acts on the mold. Therefore, the rise or fall of the top block 6 drives the push plate to perform the mold opening or closing action. When the driving wheel 11 descends, it disengages from the convex end of the slider 5 and cancels the pushing force on the slider 5. It should be noted that after the driving wheel 11 rises and pushes the slider 5 into place, a limiting and blocking component can be set to block and limit the backward movement of the slider 5 so that the mold always remains in this open position. Those skilled in the art can directly apply the limiting structure for the slider 5 according to the blocking and limiting mechanism in the prior art.

[0037] Through the contact / separation between the driving wheel 11 and the convex end of the slider 5, and the direction conversion of the inclined sliding between the slider 5 and the top block 6, the mold opening and closing action is transformed from horizontal driving movement into vertical lifting, which is independent of the downward pressing action of the mold closing mechanism into a controllable step. This enables the mold to be closed first before the bottle cap is compression molded. After ensuring that the metal ring has been accurately sleeved at the designated position of the mold, pressure is applied to perform the downward pressing and forming action to complete the compression molding. The setting of this action logic avoids the risk of mold damage caused by the offset of the metal ring when the mold closing and downward pressing are carried out synchronously from the mechanical structure.

[0038] Embodiment 2: This embodiment is based on the foregoing embodiment. In this embodiment, the lever mechanism 3 is connected to a first connecting plate, the first connecting plate is connected to a reset rod 4, a reset mounting hole for mounting the reset rod 4 is formed in the slider 5, the bottom of the reset rod 4 passes through the reset mounting hole and is disposed inside the slider 5, and a bottom end of the reset rod 4 is connected to a limit support mechanism; wherein, the first connecting plate is used to drive the reset rod 4 to move synchronously through the movement of the lever mechanism 3, and the limit support mechanism is used to separate from or contact the slider 5 through the downward pressing or rising of the reset rod 4 and allow the slider 5 to be reset or support and limit the slider 5, so that the top block 6 in contact with the slider 5 is reset or supported and lifted.

[0039] As a preferred implementation manner, the limit support mechanism includes a stopper 9 connected to the bottom end of the reset rod 4 and a limit frame 8 sleeved on the outer surface of the stopper 9. A spring is connected to the bottom of the stopper 9, a bottom surface limit groove for cooperating with the stopper 9 is formed in the bottom of the slider 5, and the top surface of the limit frame 8 is connected to the slider 5; wherein, the limit frame 8 is used to limit the movement direction of the stopper 9 to be the same as the lifting direction of the reset rod 4, and the stopper 9 is used to cooperate with the bottom surface limit groove of the stopper 9 after rising following the reset rod 4 and act on the slider 5 through the prestress of the spring to limit and block the reset return of the slider 5. Preferably, a pressing block 7 can also be sleeved on the outer side surface of the limit frame 8, and the top end surface of the pressing block 7 and the top end surface of the limit frame 8 are arranged in the same plane to form a moving plane of the slider 5; the pressing block 7 is used to support the slider 5 to perform a translation movement along the top end surfaces of the pressing block 7 and the limit frame 8 during the lifting and reset actions.

[0040] On the basis of the foregoing embodiment, this embodiment adds a reset rod 4 and a limit support mechanism for controlling the reset of the slider 5 and the support and limit at a specific position. The lever mechanism 3 is connected to the first connecting plate, the first connecting plate is then connected to the reset rod 4, the bottom of the reset rod 4 passes through the reset mounting hole on the slider 5 and is connected to the limit support mechanism, and the limit support mechanism is located below the slider 5. The limit support mechanism mainly consists of a stopper 9, a limit frame 8, a bottom surface limit groove and a spring. The stopper 9 is connected to the bottom end of the reset rod 4, the limit frame 8 is sleeved outside the stopper 9 to restrict its movement to only vertical movement, the spring is placed below the stopper 9 to provide a pre-tightening force, and a bottom surface limit groove matching the shape of the stopper 9 is formed in the bottom of the slider 5.

[0041] The specific working process of this embodiment is as follows: Along with the lifting linkage of the lever mechanism 3, when the lever mechanism 3 drives the reset rod 4 to rise, the stopper 9 moves upward accordingly. When the driving wheel 11 touches the protruding end of the slider 5, the bottom end position of the reset rod 4 has risen above the top plane of the limit frame 8. After the slider 5 is translated in place during the continued movement, under the action of the spring pre-tightening force, the stopper 9 will be embedded in the bottom surface limit groove of the slider 5 to form a rigid block, firmly restricting the slider 5 from retreating at the current position, thereby stabilizing the lifted top block 6 and the mold clamping state, and providing a stable support for safely placing the metal ring. When the slider 5 needs to be reset, the lever mechanism 3 drives the reset rod 4 to press down. The reset rod 4 pushes the stopper 9 to move downward against the spring force, causing the stopper 9 to disengage from the bottom surface limit groove of the slider 5. At this time, the slider 5 loses the block and can horizontally return to its original position along the translation plane composed of the pressing block 7 and the top surface of the limit frame 8 under the action of other forces (such as a spring or an external driving force), causing the top block 6 and its connected push plate to descend to complete the mold clamping. The pressing block 7 is sleeved outside the limit frame 8, and its top surface is flush with the top surface of the limit frame 8, jointly providing a stable support plane for the translational movement of the slider 5. In this embodiment, through the linkage of the reset rod 4 to the engagement and disengagement of the stopper 9 and the bottom surface limit groove of the slider 5, reliable rigid limit support of the slider 5 at the lifting working position is achieved, ensuring the stability in the mold opening state, and allowing the slider 5 to be smoothly reset when needed, further guaranteeing the accuracy and safety during the metal ring placement and mold operation stages.

[0042] Embodiment 3: This embodiment is based on the foregoing embodiment. In this embodiment, a driven shaft 12 is further provided inside the lever mechanism 3. A driven wheel 13 is provided on the driven shaft 12. The driven wheel 13 is connected and in transmission cooperation with the driving wheel 11. The outside of the lever mechanism 3 is connected with a bracket mechanism. A wear-resistant plate 2 for frictionally cooperating with the driven wheel 13 is provided on the bracket mechanism. The wear-resistant plate 2 is provided on the bracket mechanism on the side close to the lever mechanism 3.

[0043] Based on the foregoing embodiment, this embodiment enhances the stability and anti-interference ability of the lever mechanism 3. A driven shaft 12 and a driven wheel 13 mounted thereon are added inside the lever mechanism 3. The driven wheel 13 is connected to the driving wheel 11 by means of meshing or friction to achieve transmission cooperation. On the support mechanism fixed outside the lever mechanism 3, a wear-resistant plate 2 is installed on the side facing the lever mechanism 3. When the lever mechanism 3 performs a lifting action, the driven wheel 13 installed inside the lever mechanism 3 rises and falls accordingly. During the process of the lever mechanism 3 rising to the working position or stabilizing at the working position, the outer edge of the driven wheel 13 will contact and press against the wear-resistant plate 2 on the support mechanism. The wear-resistant plate 2 is made of a highly wear-resistant material, and the contact pressure between it and the driven wheel 13 needs to be set so that the frictional force generated by the pressure can support the lever mechanism 3 from falling back under its own weight. The sliding friction between the driven wheel 13 and the wear-resistant plate 2 of this structure effectively consumes the radial runout or vibration energy that may be generated by the driving wheel 11 and the transmission system, significantly improving the smoothness of the lever mechanism 3 during the lifting process; the supporting force exerted by the wear-resistant plate 2 on the driven wheel 13 can be transmitted to the entire lever mechanism 3, providing an additional external support point for its working position after rising, enhancing the ability of the lever mechanism 3 to resist the working load, and reducing the risk of deformation. This embodiment effectively suppresses the radial runout during the operation of the mechanism by using the frictional contact between the driven wheel 13 and the wear-resistant plate 2, improves the accuracy and stability of the movement and positioning of the lever mechanism 3, and enhances the overall stiffness of the mechanism through external support, providing a more reliable basis for the accurate execution of the mold opening and closing actions.

[0044] Embodiment 4: This embodiment is based on the foregoing embodiment. In this embodiment, the top surface width of the top block 6 is set to be greater than the bottom surface width. On the side of the top block 6 opposite to the inclined surface, it is set as a vertical plane perpendicular to the translation direction of the slider 5. The vertical plane of the top block 6 is in close contact with and slidably connected to an end limiting block 14; wherein, the end limiting block 14 is used to limit the moving direction of the top block 6 to the vertical direction from the vertical plane side of the top block 6 when the top block 6 exerts pressure on one side of the inclined surface of the slider 5.

[0045] Based on the foregoing further embodiments, this embodiment optimizes the structure and movement guidance of the top block 6 to ensure the perpendicularity of its movement direction. Specifically, the top block 6 is designed such that the width of its top surface is greater than the width of its bottom surface, forming a cross-section similar to a wedge or trapezoid. The other side of the top block 6 opposite to the inclined contact surface is designed as a vertical plane perpendicular to the translation direction of the slider 5. On one side of the vertical plane, an end limit block 14 is provided. The end limit block 14 closely adheres to the vertical plane of the top block 6 and allows relative sliding between the two along the vertical direction. When the slider 5 is translated under the push of the driving wheel 11, a pressure is exerted on the top block 6 through the inclined contact surface. This pressure can be decomposed into two component forces: one is the normal component force along the inclined surface, and the other is the tangential component force that causes the top block 6 to move along the sliding direction of the inclined surface. The tangential component force can drive the top block 6 to move. Since the other side of the top block 6 is restricted by the end limit block 14, the end limit block 14 restricts the top block 6 to slide only along the vertical plane in contact with it, that is, in the vertical direction. Any movement of the top block 6 that attempts to deviate from the vertical direction will be limited and blocked by the end limit block 14. Therefore, the horizontal thrust exerted by the slider 5 on the inclined surface of the top block 6 is uniquely converted into the vertical lifting movement of the top block 6.

[0046] Through the unique shape setting of the top block 6 in this embodiment, combined with the constraint of the end limit block 14 on the vertical plane, the inclined acting force transmitted by the slider 5 is compulsorily converted into the pure vertical linear movement of the top block 6, eliminating the risk of yaw or jamming that may occur during the lifting process of the top block 6, ensuring the accuracy and reliability of the mold ejector plate movement, and is the key guarantee for realizing the precise opening and closing of the mold.

[0047] Embodiment 5: This embodiment is a control method for the mold closing mechanism of a bottle cap production mold. As Figure 2 shown, it includes the following steps:

[0048] S100. Drive the lever mechanism 3 to drive the main shaft 10 to lift and lower, so that the driving wheel 11 contacts or separates from the protruding end of the slider 5;

[0049] S200. Push the slider 5 to translate through the contact between the driving wheel 11 and the protruding end of the slider 5, and utilize the sliding fit between the slider 5 and the inclined surface of the top block 6 to convert the horizontal displacement into the vertical lifting of the top block 6;

[0050] S300. The linkage reset rod 4 moves with the lever mechanism 3, and supports, limits or resets and releases the slider 5 through the limit support mechanism;

[0051] S400. Drive the ejector plate to perform the mold opening or closing action through the vertical movement of the top block 6.

[0052] As a preferred implementation manner, the driving process of the lever mechanism 3 in step S100 further includes:

[0053] After the control of the driving shaft 10 follows the lifting of the lever mechanism 3, the driven wheel 13 engaged with the driving wheel 11 contacts the wear-resistant plate 2 of the support mechanism. The radial runout of the driving wheel 11 is eliminated through the sliding friction between the driven wheel 13 and the wear-resistant plate 2 of the support mechanism, and the pressure exerted by the wear-resistant plate 2 on the driven wheel 13 provides a supporting force for the lever mechanism 3;

[0054] Among them, the wear-resistant plate 2 is made of wear-resistant material, and the friction coefficient of the wear-resistant plate 2 and the contact pressure with the driven wheel 13 are set so that the driven wheel 13 does not slip during the lifting and lowering stroke.

[0055] As a preferred implementation manner, the control method of the top block 6 in step S200 further includes: the inclination angle between the contact surface of the inclined surface of the slider 5 and the inclined surface of the top block 6 and the moving direction of the slider 5 is controlled to be 30° - 60°, so that the horizontal thrust exerted by the slider 5 on the top block 6 generates vertical component forces of different magnitudes according to the inclination angle.

[0056] As a preferred implementation manner, the action control of the limit support mechanism in step S300 further includes:

[0057] When the lever mechanism 3 drives the reset rod 4 to rise, the stopper 9 is embedded in the bottom limit groove of the slider 5 under the action of the spring pre-tightening force, forming a rigid block for the translational movement of the slider 5; during the reset stage of the slider 5, the control of the reset rod 4 pressing down drives the stopper 9 to compress the spring and withdraw from the bottom limit groove, and the limit frame 8 maintains the vertical movement track of the stopper 9, so that the slider 5 is reset; during the translation of the slider 5, the pressing block 7 and the top end surface of the limit frame 8 jointly form a translational guide plane of the slider 5.

[0058] This embodiment provides a control method specifically for the mold clamping mechanism of the aforementioned embodiment, the core of which is to realize the time-separated operation process of first safely clamping the mold to place the metal ring, and then pressing down to form. Specifically, the device first drives the lever mechanism 3 to rise, driving the driving shaft 10 and the driving wheel 11 to rise, so that the driving wheel 11 contacts the raised end of the slider 5 (if the mechanism includes embodiment 3, the rising of the driving wheel 11 will drive the driven wheel 13 to contact the wear-resistant plate 2 to obtain support and vibration reduction). Next, the driving wheel 11 pushes the slider 5 to translate horizontally, and the slider 5 converts the horizontal displacement into the vertical lifting of the top block 6 through the sliding cooperation between its inclined surface and the inclined surface of the top block 6, driving the push plate to complete the mold opening action, and the mold is opened at this time. At the same time, the reset rod 4 rises with the lever mechanism 3. If the mechanism includes embodiment 2, the reset rod 4 rises and drives the stopper 9 to embed into the bottom limit groove of the slider 5 under the action of the spring, locking the position of the slider 5 and stabilizing the open state of the mold. The operator can place a metal ring on the mold. After the metal ring is placed, the mold opening step is performed in reverse. The driving wheel 11 descends and disengages from the protruding end of the slider 5. If the implementation scheme of Example 2 is included, the reset rod 4 first presses down to drive the block 9 to disengage from the bottom limit groove, releases the lock on the slider 5, and the slider 5 moves back to make the top block 6 also descend to drive the push plate to close the mold; at this time, the mold has been safely closed but no pressure is applied to the mold. If the monitoring finds that the position of the metal ring is abnormal and causes abnormal mold closing (such as the mold is not completely closed or the resistance is too large), the control system suspends the process, the lever mechanism 3 and the reset rod 4 no longer continue to press down, and the mold opening action can be directly performed, that is, the mold is driven to open and inspected and repaired. At this time, the pressing molding action is blocked and the mold is protected. If the metal ring is placed normally, the control system issues an instruction to the lever mechanism 3 to continue to drive the reset rod 4 to press down. At this time, the slider 5 and the top block 6 remain in place, and the pressing action of the lever mechanism 3 drives the entire mold assembly to complete the final compression molding through other structures (the pressing driving execution component that is not clear in the figure but must exist). After the molding is completed, the mold opening action is performed again, driving the lever mechanism 3 to rise so that the driving wheel 11 contacts the raised end of the slider 5, pushing the slider 5 to translate, driving the ejector block 6 to rise, and ejecting the bottle cap product through the ejection mechanism of the mold. If the implementation scheme of Example 2 is included, the reset rod 4 rises with the lever mechanism 3, and the stopper 9 is again embedded in the limit groove of the slider 5 to lock the mold opening position.

[0059] The control of this embodiment ensures that the mold must complete the metal ring placement and safe mold closing before executing the downward pressing action through the timing control of the mechanical structure, and is provided with a protection mechanism for interrupting the downward pressing molding process when the mold closing is abnormal. Only when the metal ring is correctly placed and the mold closing state is normal, the subsequent downward pressing molding action is allowed and executed, which completely avoids the problem of metal ring deviation, extrusion and damage to the mold due to synchronous downward pressing and mold closing in the prior art.

[0060] The above-described embodiments merely represent the specific implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A mold clamping mechanism for a bottle cap production mold, characterized in that, It comprises a lever mechanism, wherein a driving shaft is arranged in the lever mechanism, a driving wheel is arranged on the driving shaft, the lever mechanism is connected to one end of a slider, the end of the slider extends into the lever mechanism and is arranged above the driving wheel in a convex shape, and the other end of the slider away from the lever mechanism is slidably connected to a top block; Among them, the connection between the slider and the top block is connected by setting two inclined surfaces that are in contact and sliding connection. The lever mechanism is used to drive the driving shaft and the driving wheel to rise and fall so that the driving wheel contacts or separates from the end of the slider. The slider is used to translate after contacting the driving wheel through the raised end and lift the top block through the contact and sliding of the inclined surfaces. The top block is used to open or close the bottle cap production mold by externally connecting the push plate and driving the push plate to move.

2. The mold clamping mechanism of a bottle cap production mold according to claim 1, wherein The lever mechanism is connected to a first connecting plate, the first connecting plate is connected to a reset rod, the slider is provided with a reset mounting hole for mounting the reset rod, the bottom of the reset rod passes through the reset mounting hole and is arranged in the slider, and the bottom end of the reset rod is connected to a limited support mechanism; Among them, the first connecting plate is used to drive the reset rod to move synchronously through the movement of the lever mechanism, and the limit support mechanism is used to separate from or contact the slider through the downward pressure or upward movement of the reset rod, and allow the slider to be reset or support and limit the slider, so that the top block in contact with the slider is reset or supported and lifted.

3. The mold clamping mechanism of a bottle cap production mold according to claim 2, characterized in that, The limit support mechanism includes a stopper connected to the bottom end of the reset rod and a limit frame sleeved on the outer surface of the stopper, the bottom of the stopper is connected to a spring, the bottom of the slider is provided with a bottom limit groove matched with the stopper, and the top surface of the limit frame is connected to the slider; Among them, the limit frame is used to limit the movement direction of the block to be the same as the lifting direction of the reset rod, and the block is used to cooperate with the bottom limit groove of the block after following the rise of the reset rod and act on the slider through the prestress of the spring, so as to limit the reset and retraction of the slider.

4. The mold clamping mechanism of a bottle cap production mold according to claim 3, characterized in that, A pressure block is also sleeved on the outer surface of the limit frame, and the top surface of the pressure block and the top surface of the limit frame are arranged in the same plane to form a moving plane of the slider; the pressure block is used to support the slider to perform translational movement along the top surface of the pressure block and the limit frame during the lifting and resetting actions.

5. The mold clamping mechanism of a bottle cap production mold according to claim 1, characterized in that, A driven shaft is also provided in the lever mechanism, a driven wheel is provided on the driven shaft, the driven wheel is connected to the driving wheel and cooperates with the driving wheel in transmission, a bracket mechanism is connected to the outside of the lever mechanism, a wear-resistant plate for frictionally cooperating with the driven wheel is provided on the bracket mechanism, and the wear-resistant plate is provided on the bracket mechanism on one side close to the lever mechanism.

6. The mold clamping mechanism of a bottle cap production mold according to claim 1, characterized in that, The top surface width of the top block is set to be greater than the bottom surface width, and the side of the top block opposite to the inclined surface is set to be a vertical plane perpendicular to the translation direction of the slider, and the vertical plane of the top block is in contact with and slidably connected with an end limit block; wherein the end limit block is used to limit the movement direction of the top block to the vertical direction from the side of the vertical plane of the top block when the top block applies pressure to the inclined surface side of the slider.

7. A control method for the die closing mechanism of a bottle cap production mold, characterized in that, The steps include: S100. The driving lever mechanism drives the main shaft to move up and down, so that the driving wheel contacts or separates from the convex end of the slider. S200. The slider is pushed to translate by the contact between the driving wheel and the convex end of the slider, and the horizontal displacement is converted into the vertical jacking of the top block by the sliding fit between the slider and the inclined surface of the top block. S300. The linkage reset rod moves with the lever mechanism, and the slider is supported, limited or reset and released by the limit support mechanism. S400. The vertical movement of the top block drives the push plate to perform the mold opening or closing action.

8. A method for controlling the mold closing mechanism of a bottle cap production mold according to claim 7, characterized in that, The driving process of the lever mechanism in the step S100 further includes: After the main shaft is controlled to rise with the lever mechanism, the driven wheel engaged with the driving wheel contacts the wear-resistant plate of the support mechanism. The radial runout of the driving wheel is eliminated by the sliding friction between the driven wheel and the wear-resistant plate of the support mechanism, and the support force is provided for the lever mechanism by the pressure exerted on the driven wheel by the wear-resistant plate. Among them, the wear-resistant plate is made of wear-resistant material, and the friction coefficient of the wear-resistant plate and the contact pressure with the driven wheel are set so that the driven wheel does not slip during the lifting stroke.

9. A control method for a die clamping mechanism of a bottle cap production mold according to claim 7, characterized in that, The control method of the top block in the step S200 further includes: the inclination angle between the contact surface of the inclined surface of the slider and the inclined surface of the top block and the moving direction of the slider is controlled to be 30°-60°, so that the horizontal thrust exerted by the slider on the top block generates vertical component forces of different magnitudes according to the inclination angle.

10. A method for controlling a mold clamping mechanism of a bottle cap production mold according to claim 7, characterized in that, The action control of the limit support mechanism in the step S300 further includes: When the lever mechanism drives the reset rod to rise, the block is embedded in the bottom limit groove of the slider under the action of the spring pre-tightening force, forming a rigid block to the translational movement of the slider; during the reset stage of the slider, the reset rod is controlled to press down to drive the block to compress the spring and withdraw from the bottom limit groove, and the limit frame maintains the vertical movement track of the block to reset the slider; during the translation of the slider, the pressure block and the top end surface of the limit frame jointly form the translational guide rail plane of the slider.

Images